13 results about "Flue-gas desulfurization" patented technology

The invention provides a sludge-based adsorbent used for desulfurization and demercuration of flue-gas and a preparation method thereof. The sludge-based adsorbent employs municipal sludge and/or papermaking sludge as a raw material. The preparation method comprises the following steps: adding an activator and a physical conditioning agent into sludge slurry and carrying out mixing under stirring and mechanical dehydration; carrying out grinding and screening after drying; and carrying out physical activation after pyrolysis in an inert atmosphere so as to prepare the sludge-based adsorbent. According to the invention, the sludge slurry is used as a raw material, and uniformity of the activator and the physical conditioning agent is improved by using a wet method and the means of mixing; the activator and the physical conditioning agent can reduce repulsive interaction and hydrophilic interaction among electronegative sludge particles, and a porous lattice structure with a hard texture and good permeability is formed in a sludge cake obtained after pressure filtration and dehydration; the prepared adsorbent can be used for desulfurization and demercuration of flue-gas; and the preparation method has the advantages of simple procedures, easily controllable conditions, capacity of realizing harmony and unity of sludge treatment and resource utilization and good economic benefits, environmental benefits and social benefits.

The invention relates to a method for analyzing components in calcined lime in desulfurization of smoke. First some calcined lime powder is fetched, which is dried under 100-110 centigrade to thoroughly remove the water contained, then is burnt under 650-700 centigrade to ensure that Ca(OH)2 is completely dissolved into CaO and H2O, and CaCO3 is not dissolved, in this way the mass difference before and after the burning will be the water content generated by the dissolution of Ca(OH)2, and by the water mass, the content of Ca(OH)2 can be calculated; then the method and device disclosed in patent 200610054402.5 is used to detect the content of CaCO3. The invention is easy to operate, needs few equipment and reagent, analyzes accurately, can determine the actual contents of different components especially CaCO3 in calcined lime, because CaCO3 is an inertial substance in the calcined lime and will block the reaction with SO2 and influence the desulfurization efficiency. The invention can also be used for analyzing components in slaked lime.

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 provides a flue gas desulfurization tower filter with a debris removal reminding function. The flue gas desulfurization tower filter comprises a box, an inlet pipe, an outlet pipe and a built-in filter screen. The inlet pipe and the outlet pipe are arranged on the two opposite side faces of the box respectively and communicated with the interior of the box, and the built-in filter screen is arranged in the box in the manner of being parallel to the end opening face of the inlet pipe and divides the interior of the box into two cavities. An inlet pipe valve is connected to the end opening, away from the box, of the inlet pipe. A fluid sensor is arranged in the cavity, close to the inlet pipe valve, of the box, a processor is connected to the fluid sensor through a line, and a warning light is connected to the processor through a line. Compared with the prior art, the flue gas desulfurization tower filter can remind operating personnel to carry out debris removal in time, it is avoided that due to serious debris blockage, the production efficiency of a follow-up production process is low, and efficient and stable operation of the whole production process is ensured.

The invention relates to the technical field of environmental protection desulfurization, in particular relating to a method for improving quality of desulphurization gypsum in flue gas desulfurization process and a flue gas desulfurization system. A plurality of seriflux supersaturation detection devices and a plurality of stirring devices are evenly distributed on the periphery of the seriflux tank of the flue gas desulfurization system, the stirring device is driven by a stirring driving device which is controlled by a control device; the seriflux supersaturation detection devices detect the supersaturation of peripheral seriflux and output the detection results to the control device; the control device controls the stirring driving device to operate according to the seriflux supersaturation degree detected by the seriflux supersaturation detection devices; according to the seriflux supersaturation, corresponding stirring operation is carried out on seriflux, the supersaturation of each zone of seriflux in the seriflux tank is evenly kept within the metastable state of crystal grains, thereby reducing new core formation rate of gypsum, increasing crystallization growth driving power of existing tiny crystal grains, and improving the quality of gypsum.

The invention relates to the technical field of environmental protection, specifically to a special preparation device for a boiler flue gas desulfurization tower repairing agent. The special preparation device for the boiler flue gas desulfurization tower repairing agent is characterized by comprising a closed type circulation low-oxygen boiler tail gas mixing tower system, an A component preparation system, a B component preparation system, a double spiral agitator and a supporting frame assembly. The closed type circulation low-oxygen boiler tail gas mixing tower system comprises a closed type circulation low-oxygen boiler tail gas mixing tower, a multicyclone, a Roots blower assembly, a circulating fluidized bed boiler fly ash spiral conveyor, a connecting air pipe assembly and a circulation low-oxygen boiler tail gas supplement port. The closed type circulation low-oxygen boiler tail gas mixing tower system adopts tail gas from a boiler flue gas dust remover as a medium for conveying circulating fluidized bed boiler fly ash, and has the characteristics of low oxygen, dryness and cleanness, the activity of SiO2 particles of the circulating fluidized bed boiler fly ash can be maintained, and the boiler tail gas is used as the gas medium to complete the technological processes of conveying, mixing and separating, so that waste is turned into wealth substantially, and high-value utilization of the boiler tail gas is realized.

The invention discloses a flue gas desulfurizing, denitrating and dedusting device. The device comprises a water purifying tank, a first-stage desulfurization tank, a second-stage desulfurization tankand a denitration tank which are sequentially arranged from left to right, the water purifying tank is externally connected with a flue gas inlet tube, an air suction pump is arranged at the outer end of the flue gas inlet tube, an air outlet nozzle is arranged at the inner end of the air inlet tube, the air outlet nozzle is mounted at the inner bottom of the water purifying tank, the first-stagedesulfurization tank is connected with the water purifying tank by a first air suction tube, a desulfurization activated carbon fiber catalyst bed is mounted in the first-stage desulfurization tank,a cavity is arranged in the desulfurization activated carbon fiber catalyst bed, and the other end of the first air suction tube is communicated with the cavity; the desulfurization activated carbon fiber catalyst bed is a honeycomb structure; and the surface of the desulfurization activated carbon fiber catalyst bed is provided with micro-pores. The device greatly improves the efficiency of desulfurization treatment of exhaust gas, greatly improves the efficiency of denitration catalytic treatment of the exhaust gas, and has high purification efficiency for the exhaust gas.

The invention relates to the field of chemical industry, and particularly relates to a desulfurization additive as well as applications and a using method of the same. The desulfurization additive contains the following raw materials in parts by weight: 30-40 parts of accelerant, 50-60 parts of activator and 5-15 parts of catalyst. The desulfurization additive can be used in a wet-process flue gas desulfurization technology of limestone or limestone gypsum. The using method of the desulfurization additive comprises the steps of: adding the desulfurization additive in a circulation loop of a limestone wet-process desulfurization circulation system; stirring; and adding the desulfurization additive by a set frequency. The desulfurization additive is capable of enhancing the reaction rate of desulfurization.

The invention relates to a flue gas desulfurization tower with characteristics of easy material discharging and easy impurity removing. The flue gas desulfurization tower comprises a desulfurization tower, an impurity removal liquid circulation system and a liquid collection tank, wherein the upper portion of the desulfurization tower is provided with a gas outlet, one side wall of the lower portion of the desulfurization tower is provided with a gas inlet, the lower bottom of the desulfurization tower is coaxially provided with a liquid outlet, the lower portion of the liquid outlet is coaxially provided with an adsorption sleeve, the adsorption sleeve is filled with an adsorption material, the lower portion of the adsorption sleeve is communicated to the liquid collection tank, a cleaning liquid flows downward from the desulfurization tower, passes through the adsorption sleeve, and then enters the liquid collection tank, the inner-lower portion of the desulfurization tower is provided with a supporting net, and the upper portion of the supporting net is filled with a desulfurization material. According to the present invention, the heavy metal ion adsorption sleeve is coaxiallyand fixedly arranged on the lower portion of the desulfurization tower, and can adsorb heavy metal ions, and the liquid is directly discharged to the liquid collection tank, is uniformly collected, and can be reused after being filtered, such that the clean treatment is achieved, and the environmental pollution is not caused.

The invention discloses a coal burning waste gas desulfurization and reutilization device which comprises a desulfurization tower, tempered glass, a filter, a quicklime slurry water pipe, an annular water pipe, an oxidation tank, stirring wheels, a refining tank and a settling tank. The tempered glass is fixed on the surface inside the desulfurization tower, an atomizing nozzle is mounted at one end of the quicklime slurry water pipe, the annular water pipe is mounted above the atomizing nozzle, the oxidation tank is arranged on one side of the desulfurization tower, a motor is arranged belowthe oxidation tank, the stirring wheel is connected with the motor through a speed reducer, an air pipe is arranged on the side face of the oxidation tank, the refining tank is arranged on one side ofthe oxidation tank, and the precipitation tank is arranged on one side of the refining tank. Glass fiber reinforced plastic is fixed on the surface inside the desulfurization tower, so that strengthis ensured, being corroded by acid is avoided, and steel consumption is reduced; by arranging the annular water pipe, water supply can be realized, and the inner wall of the desulfurization tower canbe flushed; the oxidation tank and the refining tank are provided with the stirring wheels for stirring, so that reaction is more sufficient, and impurities are reduced.