57 results about "Flue" patented technology

The invention discloses a check fire valve for a flue, comprising a lampblack channel comprising an outer casing. The lampblack channel is provided with an air inlet and an air outlet which are opposite to each other; two oppositely arranged valve plates are arranged in the lampblack channel; and are rotatablely arranged in the lampblack channel through a valve plate rotation shaft; a blocking body causing the two valve plates only to be opened towards the direction of the air outlet is arranged at one end near the air inlet in the lampblack channel; a connecting strip lengthways arranged to separate the air inlet to two parts is arranged at the side near the air inlet in the lampblack channel; the valve plate rotation shaft is arranged close to the connecting strip; and the side face of the connecting strip facing to the air outlet is provided with a high-temperature closing device which can enable the valve plates to be forcibly closed. The invention has good lampblack removing effect, can not impede the smoothness of public flues, and can be forcibly closed when temperature of flue gas in the public flues is in a high exigent condition.

The invention relates to a concrete sample curing room which consists of a laboratory as well as a microcomputer, a temperature sensor, a humidity sensor, a constant temperature and humidity box and an air flue that are arranged in the laboratory, wherein the microcomputer is respectively connected with the temperature sensor, the humidity sensor and the constant temperature and humidity box which is internally provided with a hermetically sealed compressor, an electric heating pipe, an ultrasonic humidifier, a centrifugal fan and an evaporator; an air outlet of the constant temperature and humidity box is connected with the air flue; the temperature sensor monitors the temperature in the constant temperature and humidity box and transmits a temperature signal to the microcomputer; the humidity sensor monitors the humidity in the constant temperature and humidity box and transmits a humidity signal to the microcomputer; the microcomputer controls the ultrasonic high-frequency oscillation, converts the water fog into ultramicrons with the particle size of 1-5 microns, diffuses the water fog into the air through a pneumatic device, and guarantees the even indoor temperature and humidity through setting pipeline fog sending and blowing manners; the air transmitted by the centrifugal fan blows the fog of the ultrasonic humidifier to everywhere of the constant temperature and humidity box through the air flue.

The invention provides a method for effectively restraining generation of sulfur trioxide and waste acid in smelting smoke. By adjusting smoke temperature, and/or controlling the wind leakage amount of a smoke flue, and/or reducing the water content of materials and the sulfate content, generation of the sulfur trioxide and the waste acid in the smoke is restrained. By adjusting parameters such as the smoke temperature, the wind leakage amount, the water content and the sulfate content, generation of the sulfur trioxide and the waste acid is restrained, and compared with the prior art, the method has the beneficial effects that the cost is low, operation is easy, other compounds are not introduced, and generation of the sulfur trioxide and the waste acid in the smoke is restrained from source. The method can be applied to the smoke waste heat recovery and treatment link in the copper sulphide concentrate oxygen enrichment matte smelting process, generation of the sulfur trioxide and the waste acid in the smoke is restrained, and then the problems of corrosion to the smoke flue and waste acid are relieved.

The invention discloses a biomass pyrolysis system and a biomass pyrolysis method. The biomass pyrolysis system comprises a pyrolysis furnace, a combustion lift pipe, a separation device, a biochar heat carrier pipeline and a smoke flue. According to the biomass pyrolysis system, efficient biomass pyrolysis is realized through simultaneous heating by the aid of internal biochar heat carriers and external smoke.

The invention belongs to a technical field of smoking equipment, particularly relating to an electronic cigarette, which comprises a casing with a cavity and a heating assembly comprising a mounting tube, a smoke insertion tube and a heater, wherein the smoke insertion tube is slidably disposed at an upper end of the mounting tube, the heater is disposed in the mounting tube and partially protrudes into the smoke insertion tube. The upper end of the casing is provided with a first through hole adapted to the mounting tube which is slidably disposed in the cavity and facing the first through hole. The side wall of the mounting tube is provided with a first hollow groove extending along the sliding direction of the smoke insertion tube. A sliding switch slides along the sliding direction ofthe smoke insertion tube and extending into the casing. The smoke insertion tube is provided with a connecting portion which passes through the first hollow groove and is connected to the slide switch. The sliding switch can push out the smoke insertion tube which drives a cigarette or a cartridge to separate from the heater. Further pushing the sliding switch, the smoke insertion tube and the mounting tube are pushed simultaneously by the sliding switch, thereby disassembling the heating assembly and timely depositing debris on the surface of the heater to improve the taste of the flue-curedcigarette.

The invention relates to a device for testing a contamination characteristic of a segmental temperature control coal burning boiler. The device comprises a hearth and a flue, wherein the lower end of the hearth is connected with a combustor for spraying coal powder and an opposed air pipeline; the combustor is connected with a primary air inlet pipeline and a secondary air inlet pipeline respectively; the primary air inlet pipeline and the secondary air inlet pipeline as well as the opposed air pipeline are communicated with an air blower respectively; a heat preservation layer is arranged on the outer side of the hearth; a plurality of electric heating elements are arranged on the wall of the hearth in a segmental manner; segmental cooling clamping sleeves are arranged outside the flue; the tail of the flue is connected with a heat exchanger; and a plurality of test holes are formed in the hearth and the flue. The device can simulate various temperature situations of the hearth of the actual boiler, so that the stability and the flexibility of a test system are improved; by adopting segmental electric heating, the hearth can be stabilized at test required temperature; by adopting the segmental cooling clamping sleeves, the smoke temperature in the flue can be precisely controlled in a required range, and environments at different positions of the flue in the actual boiler can be simulated; and the contamination characteristic of the coal powder in different smoke temperature regions is convenient to research.

The invention relates to an assembled type flue. The invention aims to provide the assembled type flue which can be assembled without nails. The assembled type flue has the advantages that the installation difficulty is reduced, the strength of the assembled flue is better than that of a connection point of the spliced flue, the transportation is convenient and the transportation cost can be greatly reduced. The assembled type flue comprises two L-shaped flue plates and a plurality of buckles; the L-shaped flue plates comprise a flue flat plate A and a flue flat plate B which are vertical to each other and are fixedly connected; a splicing connector A is arranged at the outer end, which is far away from a connection line of the two flue flat plates, of the flue flat plate A; a splicing connector B is arranged at the outer end, which is far away from the connection line of the two flue flat plates, of the flue flat plate, and is matched with the splicing connector A. The assembled type flue has the advantages that the L-shaped flue plates are convenient to transport and the occupied volume is small; the assembling without the nails is realized and the installation difficulty is reduced; the strength of the assembled flue is better than that of the flue spliced by four fireproof plates and the transportation is convenient; the transportation cost is reduced by more than six times; meanwhile, the installation difficulty is reduced by more than four times.

The invention discloses a radial heat tube-ordinary heat exchange tube combined type waste heat recovery device for flue tail gases. The waste heat recovery device comprises a gas box body and a heat exchange device which is arranged inside the gas box body. The waste heat recovery device is characterized in that side plates of the gas box body are tube plates, through-holes are formed in the tube plates, a flue gas inlet and a flue gas outlet are arranged at two ends of the gas box body respectively, a steam-water separator is arranged on the upper portion of the box body, the heat exchange device is composed of a preheating heat exchange tube group and evaporating heat exchange tube groups, the preheating heat exchange tube group is composed of a radial heat tube and a water inlet header and a water outlet header I which are connected with the radial heat tube, and the evaporating heat exchange tube groups are composed of ordinary heat exchange tubes, water inlet headers II and steam outlet boxes. The waste heat recovery device has the advantages that the combined type waste heat recovery device in the structure is used in flue gas discharging, heat of flue exhaust gases is transferred to soft water through heat transfer by the radial heat tube, and steam is produced, so that the exhaust gas temperature of the flue tail gases is reduced, the heat utilization ratio is improved, and the dew point corrosion can be effectively avoided.

The invention provides a cyclone furnace denitration system and method. The cyclone furnace denitration system comprises a cyclone cylinder combustor and a reducing agent storage tank which are connected with the cyclone furnace; an SNCR first nozzle is arranged at the upper part of a hearth of the cyclone furnace, and an SNCR second nozzle is arranged in the top of a hearth flue; the axial direction of the cyclone cylinder combustor is vertically mounted on the outer side wall of the lower part of the hearth of the cyclone furnace, the side wall of the cyclone cylinder combustor is provided with an amino reducing agent first nozzle, and an amino reducing agent second nozzle is arranged on the side wall of the hearth above the cyclone cylinder combustor; a primary air inlet is formed in the axial direction of the cyclone cylinder combustor, and a secondary air inlet is oppositely arranged in the tangential direction of the side wall; the reducing agent storage tank is correspondingly connected with the SNCR first nozzle, the SNCR second nozzle, the amino reducing agent first nozzle and the amino reducing agent second nozzle through a reducing agent conveying pipe. The cyclone furnace denitration system and method has the advantages that the process flow is simple, the storage and conveying equipment of the SNCR denitration reducing agent is fully utilized, a new reducing agentstorage and conveying device does not need to be added, so that a new combined denitration system is formed, and the low emission of NOx of the cyclone furnace is realized.

The invention relates to a boiler waste heat recovery device, which comprises a boiler return water tank and a heat absorption tank installed on a flue. Among them, the heat absorbing tank is provided with a flue gas channel extending from the bottom of the heat absorbing tank to the top of the heat absorbing tank, a plurality of heat absorbing steel pipes are arranged inside the heat absorbing tank, and water inlets and outlets are provided on the outer wall of the heat absorbing tank. The water inlet and the water outlet are respectively connected to the boiler return water tank through pipes. The invention realizes secondary recovery and reuse of boiler waste heat, greatly increases boiler inlet water temperature, achieves the goals of coal saving, energy saving and environmental protection, and reduces cost while improving boiler thermal efficiency.

The invention relates to a desulfurization wastewater zero discharging system and method based on waste heat reuse under a low-load working condition. The desulfurization wastewater zero discharging system comprises an economizer flue gas bypass subsystem and a desulfurization wastewater evaporation subsystem, wherein the economizer flue gas bypass subsystem comprises an economizer bypass flue, and can increase the flue gas temperature and the denitration efficiency under the low-load working condition; the desulfurization wastewater evaporation subsystem comprises a wastewater pipeline, a softening box, a concentration device, a wastewater preheater, a flue gas cooler, a heating medium water pump, a heating medium water pipeline, a wastewater pump and an atomization sprayer, and can perform concentration reduction, preheating and atomization on the wastewater to improve the evaporation efficiency of the wastewater. The invention further relates to a method for realizing zero discharging of the desulfurization wastewater under the low-load working condition by using the desulfurization wastewater zero discharging system based on the waste heat reuse. The system and the method havethe characteristics of a simple technological process, and can make effective use of waste heat of the flue gas to realize zero discharging of the wastewater under the low-load working condition of aunit and also improve the system denitration efficiency.

The invention provides a southward propagation generation-adding breeding method for flattop ridge twin-row high density plantation of tobaccos. The method comprises the following steps of ridging the tobaccos to be a flattop ridge, wherein the width of the top of the ridge is 80cm, and the distance of two adjacent ridge furrow center lines is 140cm; planting the tobaccos in twin rows on each ridge body, wherein the line spacing in each ridge is 50cm, and 2100 plants are planted per mu. One or more breeding materials can be provided for each ridge body. According to the method, the pure nitrogen quantity applied to per mu is required to be increased by 40 percent compared with pure nitrogen applied to per mu in a southward propagation conventional planting way, the fertilization for a single plant does not exceed 120 plants, and the number of capsules harvested by the single plant does not exceed 100. By adopting the method, the seed quality can be ensured, the aim of southward propagation generation-adding is achieved, the planting and breeding material number of a unit area land can be increased, the southward propagation leasing area is reduced, and the cost is reduced. The method is applicable to southward propagation of the tobaccos such as flue-cured tobaccos, burley tobaccos and maryland tobaccos.

The invention relates to a technology for relieving scorification of a convection heated surface of a boiler, in particular to a system for relieving scorification of the convection heated surface of a boiler. The system comprises a crust block machine arranged in a flue of a boiler, wherein the crust block machine is positioned at the front end of the windward side of a convection superheater at the top of the flue; the crust block machine comprises two symmetrically arranged disks and a straight pipe fixedly arranged between the two disks; and the crust block machine can roll in the axial direction of the flue. The crust block machine is applicable to various boilers using high-alkali metal content coal; scorification can be made in advance; safe operation of the convection heated surface is ensured; the operation time of the boiler is increased; offset of smoke temperature at a hearth outlet and uneven flow field caused by combustion of a quadrangle tangent circle boiler are reduced by the arrangement of the crust block machine; frequent explosion of the convection superheater and the reheater is avoided; normal operation of the boiler is not affected in the process of slag removal and scorification cleaning; the operation time of the boiler is prolonged; and the economical efficiency of a power plant is improved.

The invention discloses a timber drying furnace, which comprises a furnace body, and a flue connected with the burning chamber and the fume outlet of the furnace body. The flue is fixed outside the furnace body, a heat conducting oil interlayer communicated is arranged on the flue and the furnace body, an expansive oil pipe connected with atmosphere is arranged in the heat conducting oil interlayer to be used for a hydraulic pump cycled by the heat conducting oil in the heat conducting oil interlayer; the heat conducting oil is adopted as a medium, the higher drying temperature can be obtained, and the temperature is easy to be controlled, the drying time is greatly saved, because an open mouthed water collecting sump is arranged outside the heat conducting oil interlayer, the water quantity can be increased and reduced according to the demand, thereby controlling the humidity of the hot air blast, and ensuring that the drying timber is free from the crack, the deformation and the discolor, the drying is even, the product quality is improved, when the heat quantity passes through the flue, the heat conducting oil in the flue interlayer can be completely absorbed, thereby fully utilizing the heat quantity, therefore the acceleration speed is improved, the thermal efficiency is high, and the fuel material is saved.

The invention discloses a tea-leaf organic fertilizer and a preparation method thereof. The tea-leaf organic fertilizer comprises the following raw materials by weight: 100 parts of the tea-leaf, 10-20 parts of corn kernels or corn powder, 5-10 parts of powdered rock phosphate, 2-5 parts of bacteria solution, 5-10 parts of flue-cured tobacco or flue-cured tobacco powder, and 20-40 parts of water. The preparation method successively comprises the following steps: smashing the tea-leaf, the corns and the flue-cured tobacco; uniformly mixing the smashed tea-leaf, the corns and the flue-cured tobacco and stacking; watering the stack; inoculating the bacteria solution; flatting the stack; turning over and adding the smashed flue-cured tobacco; and stacking. The tea-leaf organic fertilizer has the high nitrogen phosphorus and potassium content, has the good fertilizer efficiency to flowers and plants, crops, economic plants and fruit trees, and has the long-term fertilizer efficiency. The tea-leaf organic fertilizer has the characteristics of environmental friendliness, environment protection, safety and cleaning, no foul smell, safe indoor and outdoor use, and wide application range.

The invention provides a high heating value gas boiler, of which the fuel is high heating value gas. Steam produced by the boiler can be used for power generation, steam supply and heating, so that energy is reasonably utilized. The boiler comprises a firebox, a tail shaft, water walls, overheaters, coal economizers, air preheaters and a horizontal flue, wherein the upper part of the firebox is communicated with that of the tail shaft through the horizontal flue. The boiler is characterized in that the water walls surrounds the firebox; a roof overheater is arranged on the side wall of the tail shaft; a wall enclosure overheater is arranged on the side wall of the horizontal flue; the water walls, the roof overheater and the wall enclosure overheater adopt membrane-type wall structures; at least two burners are arranged on the front wall of the firebox side by side; the lower part of the front water wall on the inner side of the front wall inclines by 5 degrees and extends backwards to the back wall of the firebox to form a boiler bottom water wall; a firebrick layer is arrange above the boiler bottom water wall; and the overheaters comprise a high-temperature overheater, a low-temperature overheater, the roof overheater and the wall enclosure overheater.

The invention discloses a thermal power plant ultrasonic atomization desulfurization-dust removal-ammonia escape prevention integrated system. The system comprises a flue gas diversion system, an ultrasonic atomization system, a demisting system, a water treatment system, a dosing system and an automatic control system. Flue gas flows through an ultrasonic flue through diversion, in the ultrasonic flue, a circulating desulfurization compound lye is pressurized through a high pressure pump and is atomized by an ultrasonic device to form uniform fog groups composed of micron-sized fine fog drops, the ultrasonic flue is fully filled with the fog groups, the fog groups block passing flue gas, SO2 in the flue gas is captured by an atomization desulfurization agent and fast undergoes a reaction, an ultrasonic generator releases ultrasonic wave and shakes the desulfurization compound lye to obtain atomized gas having sizes of less than 5-10 microns, the atomized gas of the desulfurization compound lye has large surface tension and a certain viscidity and can effectively capture dust in flue gas, an ultrasonic generator can effectively capture ammonia escaping in the denitrification process and the escaped ammonia in the ultrasonic vibration atomization environment and nitrogen oxides further undergo a reduction reaction.

The invention discloses a warm air furnace, which comprises a furnace body, wherein the furnace body is provided with a stove port, a flue, a hearth and a steam combustion-supporting device; a flue heat absorbing pipe is arranged in the flue; the steam combustion-supporting device comprises a heating pipe, a steam bag, a water tank and a steam spray pipe; the water tank is arranged outside the furnace body and is communicated with the heating pipe through a water inlet pipe; the steam bag is communicated with a steam guide pipe in the water tank through a steam pipe; the steam pipe is communicated with a bypass pipe; the bypass pipe is positioned outside the furnace body and is communicated with the steam spray pipe through a connecting pipe nut; the steam spray pipe extends into the hearth through an outer wall of the furnace body; a positioning shaft is arranged in the flue; a positioning sleeve is sleeved outside the positioning sleeve; a scraping plate is sleeved outside the flue heat absorbing pipe; the positioning sleeve is fixedly connected with the scraping plate through a connecting rod; the positioning sleeve is provided with an operating handle; and the operating handle is positioned at the edge of the stove port. According to the warm air furnace, the time and labor for disassembling and assembling the steam spray pipe are saved, and the operation is convenient; and the defects brought by the fact that the operating handle is positioned on the left side or the right side of the furnace body can also be avoided.

The invention provides a support frame, a base assembly and an air purifier. The support frame comprises an air flue inner frame, an air flue outer frame and supporting ribs; the air flue outer frame is arranged on the outer side of the air flue inner frame in a sleeving manner; and the supporting ribs are arranged between the air flue inner frame and the air flue outer frame, and a space between the air flue inner frame and the air flue outer frame is hollowed to form a side air inlet. The space between the air flue inner frame and the air flue outer frame is hollowed to form the side air inlet, compared with a supporting frame with a single function in the prior art, the supporting frame serves as a part of an air inlet air flue, the function of the supporting frame is additionally arranged, and the air inlet amount can be effectively improved.

The invention discloses a full-load denitration device with a urea fume pyrolysis function and relates to the technical field of boilers. Key techniques of 'urea fume pyrolysis' and 'full-load denitration' are adopted, the device comprises equipment such as a boiler tail flue transferring chamber, a bypass flue, a bypass flue adjusting door, an expansion joint, a closing door, a urea solution metering and allocation device, a urea solution spray gun, an ammonia gas flow equalizing device and a main flue adjusting door, a fume bypass is arranged above a low-temperature overheater in the boilertail flue transferring chamber, an ammonia ejection device and a structure similar to a boiler partition wall are arranged inside the bypass flue, and full-load denitration and urea fume pyrolysis ofa boiler can be carried out. Electric energy and other fuel energy required by urea pyrolysis can be replaced. By adopting the device, equipment such as a urea pyrolysis furnace, a diluted air-power heater or a fuel oil/gas flue heater and an ammonia spraying grid of the prior art can be replaced, and the device is simple and smart in structure, and stable and reliable in effect.

The invention provides a device for recycling waste heat generated in a procedure of acid making and conversion of sulphide ore, belonging to the field of recycling residual heat resources. The device for recycling the waste heat generated in the procedure of acid making and conversion of sulphide ore comprises a heat exchanger and an absorption tower, and is characterized in that a connecting heat pipe evaporator is arranged between the heat exchanger and the absorption tower, and the heat pipe evaporator is merged into a low-pressure steam through a steam manifold. The heat pipe evaporator comprises a flue gas channel (1), a heat pipe (2), water sleeves (3), an ascending pipe (4), a steam manifold (5) and a descending pipe (6), wherein the heat pipe (2) is arranged in the flue gas channel (1), the water sleeves (3) are respectively arranged on the upper end of the heat pipe (2), the water sleeve (3) is connected with the steam manifold (5) through the ascending pipe (4), the steam manifold (5) is connected with another water sleeve (3) through the descending pipe (6). The device has the advantages of small flow resistance, high heat transfer efficiency, compact device structure, light weight, and convenience for maintenance, and effectively prevents the boiler feed water from leaking in the fuel gas channel.

The invention provides a biomass boiler intelligent heating device and belongs to the technical field of biomass boilers. The biomass boiler intelligent heating device is provided for solving the problem that the automatic temperature regulation function of an existing biomass boiler is poor. The biomass boiler intelligent heating device comprises a biomass boiler body, a water pump, a water outlet pipeline, a radiator, a water return pipeline and a flue. The heating supply water outlet end of a biomass boiler communicates with the radiator through the water outlet pipeline. The radiator is arranged in a room and communicates with the heating supply water return end of the biomass boiler through the water return pipeline. The water pump is mounted on the water outlet pipeline. The flue communicates with the biomass boiler. A PLC is mounted in the biomass boiler. The thermal efficiency is improved through the biomass boiler heating device and a waste heat utilization device arranged inthe flue at the tail of the biomass boiler, fuel waste is reduced, the service life of the boiler is prolonged, and the economic benefits of the boiler are increased.

The invention discloses a tunnel top flue mounting type air purification system. The system includes a discharge flue arranged at the top of a tunnel in the tunnel length direction. The discharge fluecomprises an air circulation channel and a driving tunnel. A front grille door and a rear grille door are arranged on the two sides of the air circulation channel correspondingly. A front air valve,a pre-filter, an electrostatic dust collector, a cleaning device, a front silencer, a fan, a rear silencer and a rear air valve are sequentially arranged in the air circulation channel and located between the front grille door and the rear grille door. A control cabinet is arranged in the driving tunnel. Compared with a bypass type air purification ventilation system, the disclosed system has theadvantages that a high bypass tunnel excavation cost is avoided, an air purification path is greatly shortened than that of a bypass type air purification ventilation system, system resistance is small, operation energy consumption is greatly reduced, air purification efficiency is high, the structure is reasonable, and practicability is high.

The invention discloses an online waste removing system for a waste discharge area of a plate type SCR denitration catalyst calcinator. The problems that in the prior art, dust and volatile matters in a calcinator are easily condensed and adsorbed to the inner wall of a gas flue, and product quality is affected are solved. The online waste removing system is characterized in that a gas flue vertical branch pipe (5) is arranged on the top of a body, in the waste discharge area, of the calcinator; a side flue gas discharge port is connected with a flue gas header pipe (3) through a connecting branch pipe provided with a butterfly valve (4); the top of the gas flue vertical branch pipe (5) extends upwards to form a blind plate provided with a waste removing device; the waste removing device is composed of a circular scraping plate (8), a lifting rod (1) and a handle (7); the circular scraping plate (8) is arranged in the gas flue vertical branch pipe (5), the center of the circular scraping plate (8) and the bottom of the lifting rod penetrating through the blind plate (2) are welded into a whole, and the top of the circular scraping plate (8) is provided with the handle (7). The online waste removing system has the advantages of being reasonable in structure, easy to operate, safe, environmentally friendly, efficient, high in quality and the like; waste adsorbed on a pipeline in production can be effectively removed in time, it is guaranteed that flue gas is pumped and discharged smoothly, the qualified rate of products are increased, and therefore the online waste removing system is worth popularizing.

The invention relates to an electric heater. A shell, a heating element and a convection piece are included. The shell is provided with an air inlet and an air outlet. An air flue communicating between the air inlet and the air outlet is formed in the shell. The heating element and the convection piece are assembled in the air flue. The heating element is used for heating air entering the air fluefrom the air inlet during electrification. The convection piece is used for blowing the heated air towards the air outlet from the air flue for discharging. The air outlet is formed in the bottom end, close to the ground, of the shell. According to the electric heater, under the action of the convection piece, it can be guaranteed that air is blown into a room from the position close to the ground, floating is conducted under the action of buoyancy, accordingly, temperature layering in the vertical direction is reduced, and the heat utilization rate is increased; and the upper part and the lower part of the human body feel heat, and the user experience is improved.