13results about How to "Guaranteed desulfurization efficiency" patented technology

The flue gas desulfurization device based on the calcium-based absorbent, provided by the utility model, is high in desulfurization efficiency, simple in structure, simple to operate and maintain, and capable of efficiently absorbing sulfur oxides in flue gas so as to realize flue gas treatment. The bottom end of the desulfurizing tower shell is communicated with an inlet smoke box, the end part of the inlet smoke box is communicated with a smoke inlet, and an inlet smoke guide plate is arranged in the inlet smoke box close to the smoke inlet; the top end of the desulfurizing tower shell is communicated with an outlet smoke box, the end part of the outlet smoke box is communicated with a smoke outlet, and an outlet smoke guide plate is arranged in the outlet smoke box close to the smoke outlet; a rectifying grid is arranged in the desulfurizing tower shell close to the inlet smoke box; the first desulfurization module layer, the second desulfurization module layer,..., the nth desulfurization module layer are sequentially arranged in the desulfurization tower shell from bottom to top from the upper part of the rectification grid; each desulfurization module layer is provided with a plurality of calcium-based absorbent boxes; a plurality of loading and unloading doors in one-to-one correspondence with the desulfurization module layers are formed in the wall plate of the desulfurization tower shell.

The utility model discloses a desulfurization reactor convenient to replace desulfurizer, and the reactor aims at solving the technical problem of reducing production efficiency and increasing maintenance cost when desulfurizer is invalid under the prior art, and needs to stop and dismount the reactor to replace. The reactor includes liquid desulfurization bucket, and the top of liquid desulfurization bucket is provided with horizontal solid desulfurization box, and the inside of horizontal solid desulfurization box is provided with two rectangular mounting boxes, and the inside of rectangular mounting box is provided with detachable dry desulfurization assembly, through setting two groups of switchable dry desulfurization assembly, cooperate rotatable rectangular sealing plate, make when replacing a group of dry desulfurization assembly, another group still can normally work, ensure that desulfurization process is uninterrupted, improve production efficiency, and the design of rectangular sealing plate ensures that the gas passage in rectangular mounting box is always in closed state in the switching process, prevents untreated flue gas leakage, guarantees desulfurization efficiency and environmental protection standard.

The present invention discloses a method, system, electronic device and medium for desulfurization of LNT, belonging to the technical field of engine exhaust treatment. After detecting that the LNT system enters the desulfurization mode, the method uses real-time collected environmental information and vehicle operating condition information and other data to determine the final post-injection amount value, and sends instructions to inject fuel according to this value to prompt the LNT to perform reduction desulfurization. Compared with the prior art, the desulfurization method provided by the present invention adjusts the amount of fuel injected in the desulfurization mode by collecting real-time environmental data, thereby avoiding the engine being affected by the environment, incomplete desulfurization or excessive temperature during desulfurization, causing LNT system ablation and other problems. The present invention aims at the problem of the influence of environmental factors on LNT desulfurization, and performs more precise calibration of the amount of fuel injected in the desulfurization mode, which is conducive to further exploring the potential of the LNT catalyst and expanding the scope of use of the LNT catalyst system.

The present invention discloses a dry-wet flue gas desulfurization treatment device and method, comprising a desulfurization tower, an air inlet pipeline, an air outlet pipeline, a first delivery pump, a second delivery pump, a desulfurizer storage tank and a waste tank, the desulfurization tower is provided with a flue gas inlet connected to the air inlet pipeline, a sewage outlet connected to the inlet of the first delivery pump, a flue gas outlet connected to the air outlet pipeline and an external water supply pipe, the outlet of the first delivery pump is connected to the waste tank, a dry packing layer, a spray pipe and a wet packing layer are provided in the desulfurization tower, the flue gas outlet is connected to the air outlet pipeline, the inlet of the second delivery pump is connected to the bottom of the desulfurization tower, the outlet of the second delivery pump is connected to the spray pipe, the outlet of the desulfurizer storage tank is provided with a third delivery pump, and the third delivery pump is connected to the air inlet pipeline through a desulfurizer input pipe. The present invention provides a flue gas desulfurization treatment device and method combining dry and wet methods, the desulfurization device has a compact structure, a smaller volume, a higher degree of integration, simple equipment, low energy consumption and high efficiency.

The utility model discloses a coke-oven gas deoxidizing and fine desulfurizing device, which comprises a desulfurizing tower main body, a gas inlet, a gas outlet, a liquid storage tank, a connecting pipeline and a spraying device. A vibration block pushes a placement plate when rotating, so that the placement plate vibrates, a deoxidizing agent on the placement plate is turned over, coke-oven gas can be in full contact with the deoxidizing agent, and the desulfurization efficiency is improved; a first motor drives a screw rod to rotate, the screw rod rotates to drive a movable block to move, and the movable block moves to drive a connecting block to move; when the connecting block moves, the placing plate is driven to move, the placing plate drives the deoxidizing agent to move out of the desulfurizing tower main body, and then the deoxidizing agent can be replaced, so that the deoxidizing agent can be conveniently and quickly replaced, the time required by replacement is shortened, the normal work of the desulfurizing tower is ensured, and the desulfurizing efficiency is ensured.

A method for optimizing the thicknesses of front, middle and rear chambers of an adsorption tower comprises the following steps: 1) establishing an activated carbon adsorption rate model; 2) dividing the adsorption tower into a front chamber, a middle chamber and a rear chamber, and performing desulfurization process simulation on activated carbon in each chamber; (3) setting the thickness of each chamber of the adsorption tower and the SO2 concentration at the flue gas inlet of the adsorption tower, and obtaining the activated carbon blanking speed of each chamber of the adsorption tower, so as to obtain the optimal circulation volume of the activated carbon and enable the SO2 concentration at the flue gas outlet of the adsorption tower to be within a set range; and (4) fixing the total thickness of the adsorption tower, and adjusting the thicknesses of the front, middle and rear chambers of the adsorption tower, so that the activated carbon circulation amount corresponding to the adjusted activated carbon discharging speed of each chamber of the adsorption tower is minimum, and the thicknesses of the front, middle and rear chambers of the adsorption tower are optimized. By establishing the activated carbon adsorption rate model, the optimal activated carbon circulation volume of the adsorption tower under the condition of different thicknesses of the front chamber, the middle chamber and the rear chamber is obtained, so that the minimum optimal activated carbon circulation volume is obtained, the thickness of each chamber of the adsorption tower is optimized, and the investment cost is reduced.

The invention provides a desulfurization absorption tower slurry density measurement calibration method and a calibration device.The method comprises the steps that slurry enters a slurry density measurement cylinder through a slurry inlet pipe, and when it is detected that slurry flows out of an overflow port and pressure values collected by two pressure sensors vertically arranged at the preset height of the outer side of the circumferential direction of the cylinder wall are detected, the pressure difference value is determined; determining the slurry density according to a liquid pressure calculation formula, and opening an emptying valve to empty the slurry in the measuring cylinder; the calibration liquid is poured into the slurry density measuring cylinder until a preset height is reached, and the density of the calibration liquid is determined according to pressure values collected by the two pressure sensors; comparing the measured density value of the calibration liquid with a standard density value to determine a density difference value, if the density difference value is smaller than a preset value, adding the density difference value and the slurry density to obtain a calibrated slurry density value, and if the density difference value is not smaller than the preset value, performing early warning. The technical problem of measurement inaccuracy of the slurry density measuring cylinder of the desulfurizing absorption tower in the prior art is solved.

The invention relates to the technical field of wet desulphurization, and provides boiler wet desulphurization equipment, which comprises a tower body, a multi-stage spraying assembly, a liquid supply assembly, a flue gas pipeline, an exhaust pipeline, a discharge assembly, a gas stirring assembly, a flue gas cooling assembly and a supply pipeline, the multi-stage spraying assembly is installed in the spraying area, the liquid supply assembly is installed in the slurry area, the flue gas pipeline is fixedly installed on the tower body, the exhaust pipeline is communicated with the top of the tower body, the discharge assembly is installed at an air outlet of the exhaust pipeline, the gas stirring assembly is installed on the inner bottom wall of the tower body, and the flue gas cooling assembly is installed in the flue gas pipeline. By means of the technical scheme, the problems that in the prior art, due to the fact that a large number of sediments generated in the desulfurization process are accumulated in the desulfurization tower, blocky objects generated due to the fact that the sediments are accumulated for a long time can block equipment, and the desulfurization continuity is affected are solved.

The application belongs to the field of waste and old rubber recycling and processing, and discloses a continuous devulcanization process of aging-resistant butyl reclaimed rubber, which comprises the following steps: S1: placing waste and old butyl rubber in a water solution containing 0.5-1.5 wt% sodium dodecyl benzene sulfonate to clean, and crushing the waste and old butyl rubber to particles with a particle size of 2-5 mm after removing surface impurities; S2: synchronously feeding the pretreated rubber particles and a composite devulcanization agent into a continuous devulcanization equipment, continuously devulcanizing at 180-220 DEG C, 1.5-2.5 MPa for 30-60 minutes; S3: passing high-purity nitrogen into the devulcanization section at a flow rate of 0.5-1.0 m3 / h to form an inert reaction environment; S4: cooling the devulcanization product to room temperature through a spiral cooling device, and obtaining reclaimed rubber through a 80-120 mesh screen; the application aims to provide a new continuous devulcanization process of aging-resistant butyl reclaimed rubber, solve the problems of poor aging resistance, high antioxidant loss, many oxidation side reactions and low production efficiency in the traditional process, and realize efficient recycling of waste and old butyl rubber and high-performance production of reclaimed rubber.

The utility model relates to the technical field of flue gas purification, in particular to a rotary kiln flue gas dust removal, desulfurization and purification device which comprises a primary filter tank and a water tank, a filter tank is arranged on one side of the water tank, the primary filter tank, the water tank and the filter tank are communicated through pipelines, and a fan is arranged on the outer wall of a flue gas guide pipe. A mixing chamber and a sodium bicarbonate powder bin are arranged on the other side of the flue gas heater, particulate matters with different sizes in flue gas are sequentially subjected to secondary filtration through a zeolite adsorption layer, a sponge filtering layer and an activated carbon filtering layer, harmful substances are adsorbed through the activated carbon filtering layer, the flue gas is fully filtered and purified, the filtering effect is good, and the environmental protection effect is good. The heated flue gas is fully mixed with sodium bicarbonate powder and finally enters the flue gas desulfurization reactor for desulfurization, the desulfurization effect is good, the flue gas is heated through the flue gas heater, the flue gas is heated, so that the sodium bicarbonate powder is activated, the desulfurization efficiency is ensured, the desulfurization effect is good, and the flue gas treatment effect is good.

A method for optimizing the circulation volume of activated carbon comprises the following steps: 1) establishing an activated carbon adsorption rate model according to an activated carbon adsorption rate curve of a desulfurizing tower; 2) according to the flue gas trend, dividing an activated carbon bed layer in the desulfurization tower into a front chamber, a middle chamber and a rear chamber, inputting a model constant, setting the SO2 concentration at a flue gas inlet of the desulfurization tower, and performing desulfurization process simulation on activated carbon in each chamber; and (3) obtaining the activated carbon discharging speeds of the front chamber, the middle chamber and the rear chamber of the desulfurization tower, so that the concentration of SO2 at a flue gas outlet of the desulfurization tower is within a set range, and the circulation amount of the activated carbon is optimized. According to the method, by constructing an activated carbon adsorption rate equation and based on an activated carbon desulfurization, denitrification and dust removal mechanism, on the premise that the desulfurization efficiency of the desulfurization tower is guaranteed, the activated carbon feeding speed of each chamber at the flue gas inlet of the desulfurization tower under different SO2 concentrations is obtained, and therefore optimization of the activated carbon circulation amount is achieved, and guidance is provided for operation of actual engineering.

The invention provides a desulfurization system and method for preparing gypsum with low water content. The desulfurization system comprises a desulfurization unit and an oxidation unit, a spraying layer and a first slurry pool area in which desulfurization slurry is pre-stored are arranged in the desulfurization tower; the first pipeline is used for conveying the desulfurization slurry to the spraying layer to spray the flue gas to remove SO2; the first pulp pool area conveys the mixed pulp in the first pulp pool area to the second pulp pool area through a second pipeline; the oxygen supply equipment is used for conveying oxygen to the slurry in the second slurry pool area to generate gypsum crystals; and the slurry containing gypsum crystals after being oxidized in the second slurry pool area is conveyed to the first slurry pool area by the third pipeline. By controlling the pH values of the desulfurization tower slurry pool area and the oxidation tower slurry pool area and the slurry retention time, on the premise of ensuring the desulfurization efficiency, the gypsum is fully oxidized, the moisture content of the generated gypsum is reduced, and the later gypsum utilization rate is improved.

The utility model relates to a natural gas well mouth desulfurization device, and belongs to the technical field of natural gas desulfurization. Comprising a base, a shell and stuffing boxes, the shell is fixedly connected to the base, quick connectors are arranged at the two ends of the shell, the multiple stuffing boxes are distributed below the shell in an array mode, the lower ends of the stuffing boxes are rotationally connected with the shell, connecting grooves are formed in the upper ends of the stuffing boxes, and fixing plates are arranged on the two sides in the shell; a cover plate is fixedly connected to the upper end of the fixing plate through screws, a plurality of rotating shafts corresponding to the stuffing boxes are rotationally connected to the cover plate, and connecting blocks matched with the connecting grooves are arranged at the lower ends of the rotating shafts. According to the utility model, the stuffing box is rotationally arranged in the shell, and the rotating shaft corresponding to the stuffing box is arranged on the cover plate, so that the previous gradually saturated stuffing box can be rotated after desulfurization for a period of time, the subsequent stuffing box can play a role in desulfurization, the operation is simple and convenient, and the desulfurization efficiency is effectively ensured.