152results about "Gas treatment" patented technology

The invention discloses a stink and odor removal liquid with sterilizing plants, and a preparation method and an application thereof. The stink and odor removal liquid includes, by weight, 0.05-7% of a phenol bactericide, 2-50% of a plant extract, 2-10% of plant essential oil, 1-20% of an emulsifier, 2-20% of a solubilizer, and 10-90% of deionized water. The stink and odor removal liquid, when removes stink and odor, can kill harmful bacteria, such as escherichia coli, staphylococcus aureus and candida albicans, which generate the stink and odor, so that the stink and odor are removed from the source. The stink and odor removal liquid is mainly used in resident living environment and industrial production environment such as family, hospital, livestock farms, chemical engineering plants, garbage transfer station, kitchen wastes and the like. The preparation method of the stink and odor removal liquid includes the steps of uniformly stirring the components to obtain a mixture liquid and adding the deionized water to the mixture liquid with stirring for 10-30 min. The preparation method is simple and only needs simple stirring, employs simple equipment and saves production cost.

There is provided a method for reducing the content of at least one water soluble volatile organic compound in a gas. The method comprises contacting the gas with an aqueous acidic oxidizing composition comprising H₂O₂ and a metal catalyst, and submitting the at least one water soluble volatile organic compound and the aqueous acidic oxidizing composition to an UV radiation.

The invention discloses a zoning oxidation ozone distributor, and an arrangement mode and applications thereof. The zoning oxidation ozone distributor comprises an ozone distributor main body and ozone convey pipelines; the ozone distributor main body is longitudinally divided into a plurality of distribution zones by separating plates; a group of ozone convey pipelines is arranged in each distribution zone; and the ozone convey pipelines are arranged on one end of the ozone distributor main body. The zoning oxidation ozone distributor comprises a plurality of oxidation zones, ozone local excess supply is realized at conditions that the total ratio of ozone to NOx is relatively low, orientation increasing of the ratio of easily absorbable N2O5 in oxidation products is achieved, and flue gas denitration efficiency is increased; and in addition, flue gas in the distribution zones is mixed to eliminate local unreacted ozone; the zoning oxidation ozone distributor is simple in design, andhigh in operationality, is capable of reducing denitration technology cost effectively, is obvious in engineering advantages, and is suitable for wide applications in the field of oxidation-absorptiondenitration technology.

The invention provides an automobile exhaust gas purifier and a method for purifying automobile exhaust gas. According to the automobile exhaust gas purifier, a disperser is used for dispersing the automobile exhaust gas into minute bubbles, and the minute bubbles are guided into sodium hydroxide solution of a filter vat, so that acid gas in the automobile exhaust gas is reacted with sodium hydroxide, and suspended particles in the exhaust gas are dissolved in the solution, therefore, harmful substances in the exhaust gas are greatly reduced, and the effect of exhaust gas purification is realized.

A method and apparatus for use with an oxidizer assembly of a fuel cell system in which the oxidizer assembly has an oxidizing unit for oxidizing anode exhaust gas containing electrolyte particulates and is adapted or conditioned so as to enable the electrolyte particulates to be removable from the assembly and to be removed from the assembly, and wherein the conditioning and removing occur with the oxidizing unit retained in the oxidizer assembly. The fuel cell system is also adapted so that such conditioning and removing occur with the oxidizing assembly retained in the fuel cell system.

The invention relates to a novel method for removing indoor formaldehyde by nano manganese dioxide. The method comprises the following steps: KMnO4 and MnSO4 are subjected to synthesis to obtain MnO2 at normal temperature, other metal ions are doped, and different metals-doped nanocapsule MnO2 spheres can be obtained. From the research result, the metal-supported nano MnO2 has a following sequence for oxidizing catalytic activity of formaldehyde under low temperature: Ag/MnO2 is greater than Cu/MnO2, Cu/MnO2 is greater than Zn/MnO2. A catalyst is composed for minimal rod-shaped object with average diameter of 40 nm. When the other metal is supported, the catalytic activity of the catalyst is greatly increased by comparing with pure MnO2. The supported metal is existed as simple substance and ion forms. The reason of increase of the catalyst activity is that when metal and MnO2 are combined, strong mutual effect is generated. Passing of oxygen in air through MnO2 to an active site is easier, so that formaldehyde oxidation under low temperature can be easier.

Contemplated configurations and methods for elemental sulfur removal from various gases, and especially well acid gases employ a hydrocarbon solvent that dissolves the sulfur to form a rich solvent and that is then regenerated by hydrotreating. Thus, sulfur is removed from the rich solvent as H2S that may then be processed (e.g., in Claus unit or absorption unit) while the regenerated solvent is routed back to the well and associated production pipes.

A moisture removal system having a crop drying enclosure for holding a crop product to be dried. A closed loop air circulation system is provided which includes a moisture removal enclosure for removing moisture from circulating air along with air ducting operatively connecting the moisture removal enclosure to the crop drying enclosure air inlet to form a closed loop moisture removal air system. A heat pump system, including a compressor, a first heat exchanger capable of operation as a condenser, along with two additional heat exchangers, each capable of operating as either a condenser or evaporator are positioned within the moisture removal enclosure, to remove excess moisture from the circulating air without the addition or extraction of heat from the ambient air temperature.

Disclosed is a humidifier apparatus using a photocatalyst having an air-cleaning function, and more particularly, to a humidifier apparatus using a photocatalyst having an air-cleaning function, which is capable of performing an indoor air-cleaning function and a humidifier function while minimizing energy consumption.

An integrated apparatus for separating a mixture of carbon dioxide and at least one other gas and for separating air by air distillation is provided. The apparatus includes a CO₂ separation unit configured to separate the mixture, an air separation unit configured to separate air by cryogenic distillation, a water cooling tower that operates by direct contact, a line for sending water to the top of the tower, a line for sending at least one portion of the nitrogen-enriched gas stream to a lower level of the tower, a cooled water line for withdrawing cooled water from the tower and means for cooling the air upstream of the air separation unit, the cooled water line being connected to means for cooling the air upstream of the air separation unit and to the inlet and/or to the outlet of the unit for separating the gaseous mixture.

The invention discloses a ship waste gas desulfuration device and method. The ship waste gas desulfuration device comprises a primary impurity removal box and a secondary impurity removal box. A gas outlet end of the lower right side of the primary impurity removal box is connected with the secondary impurity removal box through a communicating pipe. An air inlet pipe is arranged on the upper leftside of the primary impurity removal box. A loading frame is arranged in the primary impurity removal box. Vent holes are evenly distributed in the middle of the bottom of the loading frame. An isolation net frame is horizontally placed in the primary impurity removal box. An activated carbon filling cavity is formed in the position, on the lower side of the isolation net plate, of the loading frame. A stone filling layer is paved on the upper side of the isolation net plate. The ship waste gas desulfuration device is simple and reasonable in structure; waste gas is preprocessed through the primary impurity removal box, and therefore solid impurities in the waste gas are removed; by sufficiently mixing alkali liquid and waste gas, the waste gas mixing effect is improved, and then it is ensured that waste gas is sufficiently purified.

The invention provides a device for flue gas desulfurization through a soda ash method. The device is characterized in that the device comprises a pretreating system used for dissolving SO2 in liquid-phase water, a desulfurization tower, a technological water delivering system, a sodium carbonate preparing system used for providing alkali liquor, and an oxidation cycle system used for oxidizing sodium sulfite; a chimney is arranged at the top of the desulfurization tower, a demister is arranged on the lower part of the chimney, the desulfurization tower is connected with the technological water delivering system and the sodium carbonate preparing system, a tower kettle side wall gas-liquid inlet is formed in the tower kettle position of the desulfurization tower, a washing liquid outlet isformed in the bottom of the desulfurization tower, and the washing liquid outlet is connected with the tower kettle side wall gas-liquid inlet through the oxidation cycle system; and the pretreatingsystem is a Venturi pretreating system or an empty tower spraying pretreating system. According to the device, the alkali using cost is obviously lowered, safety and stability of a desulfurization technique are achieved, economical efficiency is achieved, and the device is suitable for application and promotion.

The invention discloses a room-temperature preparation method of a metal-organic framework material preferentially adsorbing ethane. The preparation method comprises the following steps: dispersing zinc oxide and copper tetrafluoroborate hexahydrate in water and ethanol; dispersing quinoline-5-carboxylic acid in N,N-dimethylformamide; mixing the former solutions, and stirring an obtained mixed solution at room temperature; filtering the stirred solution to obtain a solid product, purifying, drying and performing vacuum activation to obtain the metal-organic framework material preferentially adsorbing the ethane. By the room-temperature preparation method, the metal-organic framework material with good alkane selectivity is prepared at room temperature, the synthesizing energy consumption of the material is reduced, and the prepared material has good adsorptive separation performance for ethylene-ethane gas at normal temperature and pressure. The material can preferentially adsorb the ethane from the ethylene-ethane mixed gas; in addition, the material has good water vapor stability, and still has a good crystal structure after 40-day direct exposure to air.

The invention discloses a spray booth organic waste gas treatment system. The spray booth organic waste gas treatment system comprises a dry-type filter, adsorption-desorption boxes, a catalytic combustion apparatus, an adsorption fan, a desorption fan and a gas supplementing fan, wherein the number of the adsorption-desorption boxes is three, the catalytic combustion apparatus is internally provided with a preheating chamber, a catalysis bed, a heat exchanger and a first thermocouple, and a heater is arranged in the preheating chamber; and the spray booth organic waste gas treatment system also comprises a PLC control system, wherein the PLC control system comprises a PLC controller, a first thermocouple and a first over-temperature alarming device which are installed in the adsorption-desorption box, a second over-temperature alarming device which is installed in the catalytic combustion apparatus and a differential pressure gauge which is arranged in the dry-type filter, and the PLCcontroller is installed in a control cabinet. The spray booth organic waste gas treatment system solves the problems that the spray waste gas is easy in blockage, and the waste gas cannot be stably up to the standard; moreover, the automation and intelligent degree of the system is high, the treatment effect for the waste gas is good, the purifying efficiency is greater than 98 percent, and the waste gas can reach and be higher than the national emission standard; and moreover, the waste gas is catalytically combusted online, so that the zero emission of the waste gas is realized.

The invention discloses an adsorption device. The adsorption device comprises a rectangular box, wherein upright columns are arranged at the four corners at the bottom of the rectangular box; an air inlet is formed in the outside surface at the lower end of the rectangular box; an air outlet is formed in the upper surface of the rectangular box; a cross beam is arranged in the rectangular box; a motor is fixedly installed on the cross beam; a vertical rotating shaft is fixedly connected at the rotating end of the motor and is fixedly sleeved by a plurality of layers of vanes; a first stage air flow distribution layer is arranged above the cross beam and is jointly formed by support ribs, a sieve plate, an isolation plate and an adsorbent A; the support ribs are fixedly installed in the rectangular box; the sieve plate is arranged on the surfaces of the support ribs; the isolation plate is arranged on the sieve plate; the adsorbent A is arranged on the isolation plate; a second stage air flow distribution layer is arranged above the first stage air flow distribution layer; a controller is arranged on the outer surface of the rectangular box. The adsorption device has the beneficial effects of simple structure and strong practicability.

An exhaust gas purifying device includes a honeycomb carrier which extends from an inlet-side end face to an outlet-side end face of exhaust gas to form a pathway of exhaust gas, and a tubular case member that houses the honeycomb carrier via a retaining member. The honeycomb carrier includes a sloped part formed at an outer circumferential part at both end faces in an X direction thereof in a direction in which the length in the X direction of the outer circumferential edge thereof decreases, and is retained inside of the case member by the sloped part catching on an inner wall of the case member via the retaining member. The case member has a reduced-diameter part provided in a portion thereof in which an inside diameter of an inlet-side terminal part thereof is smaller than at least an outside diameter of the inlet-side terminal part of the honeycomb carrier.

An air-purifying device for a front-opening unified pod to purify the air in it is provided.

The air in the front-opening unified pod 51 is sucked through one of its breathing holes 58a and directed into an air-purifying device (M) that comprises a fan-driving means 1, a dust-filtering means 2, and a chemical-filtering means 3. The moisture, chemical gases, and dust in the air are removed by the air-purifying device (M), and then the purified air is forced into the front-opening unified pod 51 through the other breathing hole 58b. Thus the air in the front-opening unified pod 51 is purified, and its purity is maintained by circulating the air.

The present invention discloses an apparatus and method for treating perfluoro-compounds (PFCs). The method for treating PFCs includes: (a) decomposing PFCs and eliminating a first acid gas generated by the decomposition through a pre-cleaner; (b) filtering out dust particles from the exhaust gas through a filter; (c) electrifying the dust particles in the exhaust gas by electrical discharge and collecting dusts through a dust collector; (d) decomposing PFCs using a regenerative/catalytic reaction through a catalytic reactor; (e) eliminating a second acid gas generated by the regenerative/catalytic reaction through a post-cleaner; and (f) letting the purified exhaust gas out through a fan.

The invention discloses a powdery active coke fluidized bed desulfurization, ammonia injection and denitration combined system and method. The method includes the steps: 1) enabling dedusted flue gasto flow into a fluidized bed desulfurization tower and contact with sulfur-containing active coke and catalyzed powdery active coke, and removing sulfur dioxide in the flue gas by adsorption; 2) enabling the desulfurized flue gas after gas-solid separation to enter a fluidized bed denitration tower, adding ammonia and the powdery active coke, enabling powdery active coke to catalyze the ammonia toreduce nitric oxide in the flue gas into nitrogen, and removing the nitric oxide; (3) separating the flue gas after denitration by the aid of a second gas-solid separator and a bag-type dust collector, conveying the separated flue gas into a chimney, recycling the sulfur-containing coke separated by a first gas-solid separator into the fluidized bed desulfurization tower to be circularly used, and recycling circulating coke separated by a second gas-solid separator into the fluidized bed desulfurization tower to be circularly used, and adding the catalyzed powdery active coke separated by thebag-type dust collector into the fluidized bed desulfurization tower to perform desulfurization.

The invention provides a simulated ecological air purifier. The simulated ecological air purifier comprises a base shell, wherein a water storage cavity is formed in the bottom of the base shell, and an atomization cavity is formed above the water storage cavity; an air inlet provided with an air inlet fan is formed above the atomization cavity; an air outlet is formed in the side surface of the atomization cavity; a heating device for enabling the water storage cavity to produce warm water vapor is arranged in the base shell; a drain port and a water inlet of the water storage cavity are formed in the base shell. The purifier does not consume filter materials and produces lower noise so as to guarantee a quiet and comfortable purification environment.

The invention discloses an embedded microwave cyclic adsorption-desorption column, comprising an adsorption-desorption column main body and a bottom fixing tripod. The side surface of the lower part of the main body is provided with a gas inlet. A material separating screen is disposed above the gas inlet in the main body. A supporting plate is disposed at the bottom of the material separating screen. The top of the main body is provided with a filler port, a gas outlet and a spare port. The bottom of the main body is provided with a dreg discharging port and a vacuum desorption port connectedto a vacuum pump. The side surface of the lower part of the main body is provided with a material discharging port above the material separating screen. A plurality of temperature sensing points aredisposed in the main body. A microwave heater is mounted in the main body in a horizontal embedded manner or a longitudinal embedded manner. The adsorption-desorption column increases the desorption efficiency and desorption effects through a composite desorption manner combining embedded microwave heating and vacuumization, and occupies a space smaller than the space occupied by an existing microwave desorption device.

The invention discloses a bifunctional adsorbent of N-TiO2 silkworm-excrement porous carbon and a preparation method of the bifunctional adsorbent of the N-TiO2 silkworm-excrement porous carbon. The preparation method comprises the following steps: (1) firstly mixing and putting silkworm excrement and ZnCl2 in a high-temperature tube furnace, introducing a protective gas to purge, then heating to 300 to 700 DEG C to obtain silkworm-excrement porous carbon (SPC) through reaction; (2) adding butyl titanate to a selective alcohol solvent, drop by drop adding to an aqueous suspension containing the silkworm-excrement porous carbon, enabling the butyl titanate hydrolyzed to generate amorphous TiO2, thus obtaining an A-TiO2/silkworm-excrement porous carbon material; (3) carrying out surface modification on the material through a plasma radiation way to obtain an N doped A-TiO2 silkworm-excrement porous carbon material; (4) calcining the material at the temperature of 180 to 500 DEG C, finally obtaining an N-TiO2/SPC bifunctional adsorption material. The bifunctional adsorption material disclosed by the invention is applied to synchronous adsorption and catalytic degradation of VOCs of aldehydes and benzene series.

The invention provides an intelligent dynamic partition ammonia spraying control method and system. The method comprises an intelligent total amount control method and an intelligent partition controlmethod. The invention further provides an ammonia spraying system using the method. The ammonia spraying system comprises a DCS system module, a PLC controller module and a big data analysis module.The DCS system module is connected with the PLC controller module through an LC card by adopting a MODBUS communication protocol, and the PLC controller module is connected with the big data analysismodule through a TCP/IP protocol. The ammonia spraying total amount of the denitration reactor can be effectively controlled, the ammonia spraying uniformity can be guaranteed according to the branchpipe adjusting valves, ammonia escape is effectively reduced, and the purpose of environment-friendly emission is achieved.

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.

A hydrodesulfurization device includes a hydro-desulfurizer configured to remove a sulfur component from a raw material; and a heater configured to heat the hydro-desulfurizer; wherein the hydro-desulfurizer includes a plurality of blocks formed by division in a circumferential direction and disposed annularly around an outer periphery of the heater; wherein the hydro-desulfurizer is configured such that the raw material having passed through inside of each of the blocks moves to its adjacent block; and wherein the hydro-desulfurizer is configured such that adjacent blocks are communicated with each other and the raw material flows in the adjacent blocks in opposite directions.

The invention provides an ionic liquid dehumidifying method and an ionic liquid dehumidifying system for regulating gas humidity. The ionic liquid dehumidifying method comprises the following steps: enabling gas with higher humidity to sufficiently contact with a gas dehumidifying agent barren liquor, thus at least enabling moisture in the gas to be absorbed by the gas dehumidifying agent barren liquor to obtain a gas with lower humidity and a gas dehumidifying agent rich liquor; the gas dehumidifying agent barren liquor contains ionic liquor at least capable of absorbing water. Preferably, ionic liquid is adopted as the gas dehumidifying agent barren liquor. Preferably, the ionic liquid can also absorb volatile organic compounds. Water in the gas can be efficiently and fast removed by adopting the ionic liquid as a dehumidifying agent, the needed equipment is simple, and the system can stably and reliably run, and is safe and environment-friendly. The ionic liquid dehumidifying method and system are especially applicable to manufacturing shops needing to control air humidity, such as lithium battery, medicament manufacturing shops, and dried warehouses; and also, the ionic liquid dehumidifying method and system can also be applied to dewatering and purification technology of natural gas, associated gas and the like.