1174 results about "Flue-gas desulfurization" patented technology

The invention relates to the technical field of thermal power plant environmental protection, in particular to a real-time early warning and operation evaluation system of a thermal power wet desulphurization device, which comprises a real-time early warning subsystem and an operation evaluation subsystem, and the intelligent data collector performs preliminary screening and storage. The intelligent diagnosis module analyzes parameters, judges possible fault types and positions, the prediction model adopts a deep neural network, inputs a diagnosis result and outputs a real-time slurry pH value, density and density difference at a slurry outlet of an absorption tower, the intelligent evaluation module evaluates a final alarm level, and the decision scheme module generates a processing suggestion. The intelligent control execution module converts the data into a control signal, the field alarm module gives out a corresponding alarm, the intelligent query module displays a decision recommendation level on a webpage, the establishment of a prediction model comprises data sampling, model establishment, verification application and update optimization, and the prediction precision is remarkably improved.

The invention relates to the field of atmospheric control and pollution abatement, in particular to high-concentration environment-friendly flue gas desulfurization and dust removal equipment. Comprising a tower shell, the tower shell is provided with an air inlet, the upper side of the tower shell is fixedly connected with a ventilation cylinder through a support, the upper side of the ventilation cylinder is fixedly connected with a top disc, the top disc is provided with an exhaust port, and the lower side of the top disc is provided with liquid spraying pipes distributed in the circumferential direction. The ventilation cylinder and the tower shell form an air inlet cavity communicated with the air inlet, the lower side of the tower shell is provided with a liquid outlet used for discharging liquid in the tower shell, the lower part of the inner wall of the ventilation cylinder is provided with a first filter screen used for removing dust, and the diameter of the ventilation cylinder is gradually reduced from the middle to the bottom. According to the invention, the ventilation cylinder is set to be wide at the top and narrow at the bottom, and is matched with the spiral distribution of the gas guide holes, so that flue gas is uniformly distributed in the ventilation cylinder, the contact area between the flue gas and lime slurry is increased, and the desulfurization efficiency of high-concentration flue gas is improved.

The invention discloses an efficient wet desulfurization synergist and a preparation method thereof, and relates to the technical field of flue gas desulfurization. The efficient wet desulphurization synergist comprises the following raw materials in parts by weight: 10-20 parts of sodium formate, 5-10 parts of citric acid, 20-30 parts of binary acid, 5-6 parts of a surfactant, 15-20 parts of magnesium salt, 12-18 parts of sodium salt and 2-5 parts of a pH buffer agent. The preparation method comprises the following steps: reacting cyanuric chloride with lauryl amine to generate a monosubstituted compound; then reacting with L-asparaginic acid to generate a disubstituted compound; reacting with diethylenetriamine to generate a bis-triazine ring compound; and finally, reacting with sodium 2-chloroethanesulfonate to generate the surfactant. The high-efficiency wet desulphurization synergist prepared by the invention has a desulphurization effect.

The invention discloses a boiler flue gas desulfurization and denitrification device, and relates to the technical field of boiler flue gas treatment.The boiler flue gas desulfurization and denitrification device comprises a tower body, a filler layer is fixedly installed at the top of the tower body, a tower top is fixedly installed at the top of the filler layer, a water tank is fixedly installed on the outer side of the tower body, and a circulating pump is arranged on the water tank; a spraying device is arranged on the water tank, the output end of the circulating pump is connected with the spraying device through a pipeline, a plurality of water spraying openings are formed in the tower top, and the water spraying openings are all communicated with the output end of the spraying device; wherein a stirring device for stirring the filler is arranged on the filler layer, and the flue gas is quickly dispersed, so that the primary desulfurization and denitrification effect is improved, activated carbon particles are continuously stirred, the particles are prevented from caking, full contact between the particles and the flue gas is guaranteed, the reaction time is prolonged, and the desulfurization and denitrification efficiency is improved.

The invention discloses a flue gas desulfurization structure for a thermal power plant, and relates to the technical field of flue gas desulfurization, the flue gas desulfurization structure comprises a desulfurization tower, a flue gas inlet pipe is fixed at the front end of the desulfurization tower, a flue gas discharge pipe is fixed at the upper end of the desulfurization tower, a support is fixed on the outer wall of the desulfurization tower, and support legs are fixed at corners of the bottom end of the support; and a demister is arranged in the desulfurization tower. Through cooperation of the driving part and the spraying part, the first booster pump of the spraying part extracts desulfurization reaction liquid from the liquid storage tank, the desulfurization reaction liquid is distributed to the rotary spraying pipe through the adapter pipe, and full-coverage spraying is achieved through the atomization nozzles; a motor of the driving part drives a bevel gear I to drive a bevel gear ring I and an inner ring spraying pipe to slowly rotate and to be matched with a barrier plate to synchronously rotate, so that the spraying coverage area is enlarged, reaction products attached to the inner wall of the tower are scraped in real time, and blockage is prevented.

The invention discloses a steam boiler flue gas desulfurization circulating purification device and belongs to the technical field of flue gas purification. The device comprises a desulfurization treatment box, the inner wall of the desulfurization treatment box is fixedly connected with a mounting frame, the top of the mounting frame is provided with a spraying mechanism, the spraying mechanism is internally provided with a flushing mechanism, the inner wall of the desulfurization treatment box is rotatably connected with a demister, and the surface of the demister is provided with a vibration falling mechanism. A circulating water tank is fixedly mounted on the side wall of the desulfurization treatment box, the spraying mechanism comprises a plurality of atomizing nozzles arranged in the desulfurization treatment box and controls the atomizing nozzles to continuously move in the spraying process to improve the spraying comprehensiveness, and the flushing mechanism comprises connecting rings arranged on the outer walls of the atomizing nozzles and drives the atomizing nozzles to turn over by an angle to flush the atomizing nozzles. And the vibration-off mechanism comprises an abutting rod arranged above the demister, and the abutting rod is controlled to continuously knock the demister, so that slurry adsorbed in the demister is vibrated off.

Belonging to the technical field of flue gas desulfurization, the invention provides an efficient energy-saving flue gas rotary denitration reactor, which comprises a mounting sleeve, the outer wall of the mounting sleeve is fixedly connected with a lower cylinder, the top wall of the lower cylinder is fixedly connected with an upper cylinder, the inner wall of the upper cylinder is provided with a cleaning assembly, and the reactor also comprises: a flow guide assembly, and the flow guide assembly comprises a mounting frame fixedly connected to the outer wall of the upper cylinder body, the outer wall of the mounting frame is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a horizontal driving rotating rod, and the outer wall of the horizontal driving rotating rod is fixedly connected with evenly-distributed blade plates. According to the present invention, the linkage assembly, the cleaning assembly and the driving bevel gear in the flow guide assembly cooperate with each other, such that the thin scraper blade automatically rotates to clean the inner wall of the lower cylinder, the manual cleaning cost and the manual cleaning frequency are reduced, the influence on the normal operation of the reactor due to the particle retention is avoided, the internal cleaning of the reactor is ensured, and the good reaction environment is maintained; the service life of equipment is prolonged.

The invention discloses a sintering flue gas desulfurization and denitrification method and a device thereof, relates to the technical field of desulfurization and denitrification, and solves the technical problems of low desulfurization and denitrification efficiency, relatively high ammonia escape rate and increased operation cost caused by insufficient control accuracy and difficulty in real-time and efficient adjustment of desulfurization and denitrification process parameters. The distributed sensors are deployed to collect key parameters in real time, a mathematical model and a PID control algorithm are combined, the spraying amount of the desulfurizing agent, the ammonia escape rate and the catalyst operation temperature can be dynamically adjusted according to real-time data, accurate control over the desulfurization and denitrification process is achieved, the desulfurization and denitrification efficiency is improved, the ammonia escape rate is reduced, and resource waste is reduced; according to NOx concentration differences and reaction rate constants in different areas, the ammonia spraying amount is finely adjusted, the denitration effect is further improved, and it is ensured that flue gas emission reaches the standard.

The invention discloses a metal element doped MnO2 and MnFe oxide composite catalyst as well as a preparation method and application thereof, and belongs to the technical field of flue gas desulfurization and denitrification. The preparation method comprises the following steps: dissolving potassium permanganate, divalent manganese salt and doped metal salt in water for reaction to prepare metal element doped MnO2; and mixing and reacting with a template agent, ferric salt and sodium salt, drying and roasting to obtain the final catalyst. The MnO2 electronic structure is modulated by doping metal elements, and the three-dimensional porous structure of the MnFe oxide is constructed by using the template agent, so that the catalyst has efficient adsorption and strong catalytic oxidation capacity, NO and SO2 can be synergistically removed at the same time, and the catalyst has desulfurization and denitrification activity in a wide temperature range of 30-300 DEG C, and is suitable for industrial production. And liquid ammonia does not need to be used in the purification process, so that the purification agent is high in safety and is particularly suitable for purification treatment under complex flue gas conditions in the non-electric industry.

The invention relates to the field of catalytic cracking recycling, in particular to a system and a method for concentrating carbon dioxide from catalytic cracking flue gas. The system comprises a mixing part which comprises an oxygen production device, a main fan and a carbon dioxide-rich gas mixer, the oxygen production device is communicated with the carbon dioxide-rich gas mixer, and the main fan is communicated with the carbon dioxide-rich gas mixer; the regeneration part comprises a catalytic cracking regenerator, a separator, a flue gas turbine and a waste heat boiler, the catalytic cracking regenerator is communicated with the carbon dioxide-rich gas mixer and the separator, the separator is communicated with the flue gas turbine, and the flue gas turbine is communicated with the waste heat boiler; the flue gas treatment part sequentially comprises a flue gas cooler, a flue gas desulfurization and dust removal device and an overheating dehydration device; the overheating dehydration device is respectively communicated with the recycling part and the main fan; according to the system, the volume concentration of CO2 in (dry) flue gas can be increased to 96% or above.

The utility model relates to a system for reducing carbon dioxide emission in a coking production process. The system comprises a coke oven heating system, a flue gas desulfurization and denitrification system, a CO2 absorption and analysis system, a methanol synthesis system, a wind power / photovoltaic power generation system, an energy storage system, a water electrolysis hydrogen production system, a hydrogen storage system and a methanol storage system. According to the device, the emission of coke oven flue gas CO2 to the atmosphere can be effectively reduced, the CO2 in the coke oven flue gas can be captured and converted into a green methanol fuel, and the CO2 generated by combustion is not discharged when the green methanol fuel is used as a heating fuel of a coke oven, so that the cyclic utilization and green development of the CO2 are realized.

The utility model discloses an efficient turbulent flow desulfurizing tower, and relates to the technical field of industrial flue gas desulfurizing towers. An efficient turbulent flow desulfurizing tower comprises a tower body, and the internal structure of the tower body is composed of secondary turbulent flow layers; the first layer is a first turbulent flow layer which uses a pore plate type gas distribution device for turbulent flow, the second layer is a liquid distribution layer which is composed of a novel multi-stage disc type liquid distributor and a novel packing layer, a novel multi-time gas turbulent flow structure is adopted in the internal structure of the tower body, gas enters the tower from bottom to top, and a layer of pore plate is firstly arranged as the first turbulent flow layer; a disc type liquid distribution device and a liquid distribution layer are arranged upwards to serve as a gas-liquid contact area, a tube bundle type demister layer is arranged on the upper portion of the contact area to serve as a secondary turbulent flow layer, a rod type tertiary turbulent flow layer is arranged finally, and through multiple times of turbulent flow, the tower body is compact in structure and full in gas-liquid contact, so that the desulfurization efficiency is improved, and the desulfurization cost is reduced.

The utility model discloses a flue gas desulfurization and denitrification device and relates to the field of flue gas treatment. According to the flue gas desulfurization and denitrification device disclosed by the utility model, the divided-flow type water storage tank convenient to clean comprises the supporting base, the water storage tank I, the water storage tank II, the three-way connecting pipe, the cleaning water detector, the divided-flow tank, the conical guide plate and the electromagnetic flow divider valve, so that the treated water can be replaced under the condition that the equipment is not stopped when the flue gas desulfurization and denitrification device is used; the self-separation flue gas inlet box comprises a flue gas separation shell, a gas inlet pipe, a supporting frame, a flue gas dispersion column, a flue gas connecting pipe and a conical drainage cover, so that the uniformity of flue gas release can be ensured during use, and the flue gas can be in repeated contact with the treated water; meanwhile, treated water can be prevented from entering the smoke pipe during use, and the device is simple in structure and convenient to operate and brings better use prospects.

The utility model relates to the technical field of flue gas treatment, in particular to a coking flue gas desulfurization and denitrification device. Comprising a liquid storage barrel, the liquid storage barrel is filled with treatment liquid, the treatment liquid is used for purifying coking flue gas, a gas inlet mechanism is arranged on the liquid storage barrel, the coking flue gas is introduced into the treatment liquid through the gas inlet mechanism, a spraying mechanism is arranged in the liquid storage barrel, and the spraying mechanism sprays the treatment liquid to secondarily purify the coking flue gas. According to the coking flue gas treatment device, coking flue gas is introduced into treatment liquid in the liquid storage barrel through the gas inlet mechanism, and meanwhile, the gas inlet rotating rod drives the stirring rod and the crushing rod to rotate to crush bubbles in the treatment liquid, so that the coking flue gas and the treatment liquid are fully reacted, and the purification effect of the treatment liquid on the coking flue gas is improved; and after the treated flue gas is blown out from the interior of the treatment liquid, the treatment liquid is sprayed out through the spraying mechanism, gas in the liquid storage barrel is subjected to secondary purification, and the purification effect of the coking flue gas is further improved.

An intelligent control method, equipment and medium based on a flue gas desulfurization process belong to the technical field of dry and semi-dry desulfurization, solve the problem of how to improve the working condition adaptability of dry and semi-dry desulfurization processes, and comprise the following steps: a feedforward prediction step: based on historical operation data, predicting the theoretical addition amount of a desulfurizer through a feedforward prediction model; a feedback correction step: dynamically correcting the theoretical addition amount of the desulfurizing agent based on the real-time SO2 concentration deviation, obtaining the final addition amount of the final desulfurizing agent, executing the final addition amount, and performing secondary correction according to the execution result; a model iteration step: continuously optimizing the feedforward prediction model based on incremental data generated in a system operation process; according to the method, the deviation mode is analyzed by verifying the outlet SO2 concentration data in real time, secondary correction is executed, correction strategies are customized for various complex working conditions, the working condition adaptability of dry-method and semi-dry-method desulfurization processes is effectively improved, and accurate prediction and real-time control of the SO2 emission concentration are guaranteed.

The invention discloses an energy-saving operation control method for a desulfurization system, and relates to the field of wet flue gas desulfurization of a power plant. The method comprises the following steps: (1) establishing a clean flue gas SO2 concentration prediction model; (2) optimization control of energy-saving operation of the desulfurization system: selecting an optimal feature subset from the selected feature subset, and searching an optimal control value of the optimal feature subset under each working condition; and establishing an energy-saving operation optimization target and constraint conditions of the desulfurization system, and then adjusting operation parameters according to outlet data to ensure energy-saving operation. The method comprises the following steps: carrying out feature selection on desulfurization online operation parameters, and selecting an optimal feature subset to establish a clean flue gas SO2 concentration prediction model; by expanding the data acquisition range, introducing the deep learning algorithm and dynamically updating the data, the SO2 concentration of the purified flue gas can be predicted more accurately, and a reliable basis is provided for optimization control.

The utility model relates to the field of glass production, in particular to flue gas desulfurization equipment for glass production, which comprises a flue gas desulfurization tower, a spraying component and a filtering component for filtering flue gas, a rotating brush is mounted below the filtering component, a rotatable adsorption component is mounted above the filtering component, and the spraying component is mounted on the spraying component. The driving mechanism drives the brush and the adsorption assembly to rotate. The driving mechanism comprises a first rotating shaft connected with the brush, a driven gear installed on the first rotating shaft, a main gear meshed with the driven gear, a second rotating shaft coaxially installed on the main gear and a driving motor. According to the utility model, the adsorption assembly and the brush are driven by the driving mechanism to rotate, in the rotating process, the angle of the activated carbon plate can be adjusted, the two surfaces of the activated carbon plate can be in contact with flue gas, the flue gas adsorption efficiency is improved, the brush can sweep down dust on the filter plate, the purpose of cleaning the filter plate is achieved, and the filter efficiency is improved.

The invention relates to the technical field of solid waste resource utilization, in particular to aluminum-based hydrotalcite synthesized through solid waste coal gangue in-situ crystallization and a preparation method and application of the aluminum-based hydrotalcite. The preparation method comprises the following steps: (1) mixing coal gangue with acid and water, stirring at 80-95 DEG C for 0.5-3 hours to remove impurities, filtering, washing and drying to obtain impurity-removed coal gangue; (2) roasting the impurity-removed coal gangue at 600-850 DEG C for 0.5-5 hours to obtain roasted coal gangue microspheres; and (3) mixing and reacting the roasted coal gangue microspheres with calcium salt / magnesium salt, acid and water, dripping alkali to adjust the pH value to be 7-9, aging, strengthening the phase seed crystal, dripping alkali to adjust the pH value to be 10-12, crystallizing at 100-150 DEG C for 12-72 hours, and post-treating to obtain the product. According to the method, coal gangue is used as an aluminum source, the crystallinity of aluminum-based hydrotalcite is improved, the cost is reduced, and solid waste recycling is achieved. The product can be used for flue gas desulfurization or used as an FCC sulfur transfer agent, has excellent desulfurization and sulfur transfer performance, and has a wide application prospect.

The invention belongs to the technical field of environmental protection, and particularly relates to a treatment method for recycling cement kiln flue gas mineralization solid waste gypsum coupling escape ammonia, which comprises the following steps: conveying original flue gas to a deamination tower, feeding an ammonia-containing ammonium sulfate solution output by a mineralization reactor into the deamination tower for deamination, washing the flue gas by using the ammonia-containing ammonium sulfate solution, and volatilizing ammonia in the process, therefore, the flue gas is desulfurized; the desulfurized ammonia-containing desulfurized flue gas is input into the decarburization tower to be subjected to water washing treatment, the ammonia water storage tank inputs ammonia water into the liquid storage area, the ammonia water in the liquid storage area is circularly conveyed to the decarburization area to be used for carrying out water washing on the ammonia-containing desulfurized flue gas to realize decarburization, and the decarburized flue gas enters the deamination area to be subjected to two-stage water washing treatment; the ammonia-containing decarburized flue gas subjected to two-stage water washing is input into an acid washing tower for acid washing, and ammonia in the flue gas is further removed; meanwhile, the liquid storage area conveys the mixed solution to the mineralization reactor. According to the invention, the desulfurization, decarbonization and mineralization functions are realized, the problem of ammonia escape is effectively solved, and the energy consumption of evaporative crystallization is reduced.

The invention relates to the technical field of flue gas desulfurization, in particular to a lepidolite sintering flue gas based desulfurization device which comprises a desulfurization tower, a spraying unit is mounted in the desulfurization tower, a flue gas guide unit is mounted in the desulfurization tower and located below the spraying unit, and a disturbance unit is jointly mounted between the lower side of the flue gas guide unit and the desulfurization tower. An impurity removal unit is mounted in the desulfurization tower and below the disturbance unit; the flue gas desulfurization device is used for desulfurization of flue gas generated during sintering of lepidolite, particle impurities in the flue gas can be filtered firstly, then the particle impurities mixed in the flue gas are prevented from eroding and abrading the flue gas guide unit, the service life of the flue gas guide unit is ensured, meanwhile, the flue gas can be disturbed, and the service life of the flue gas guide unit is prolonged. The turbulence degree of the flue gas is enhanced through the flue gas guide unit, so that the flue gas can be uniformly distributed, the flue gas and atomized slurry are fully contacted and reacted, and the desulfurization effect on the flue gas is improved.

The invention discloses a multi-stage spraying type flue gas desulfurization device. The multi-stage spraying type flue gas desulfurization device comprises a desulfurization tower, a conical blanking hopper and a blanking pipe, a containing cavity is formed in the desulfurizing tower, a smoke inlet and a liquid inlet which are communicated with the containing cavity are formed in the desulfurizing tower, and the liquid inlet is formed above the smoke inlet; the conical discharging hopper is arranged at the bottom of the desulfurizing tower, and a discharging cavity communicated with the containing cavity is defined by the conical discharging hopper; the discharging pipe is arranged at the bottom of the conical discharging hopper and communicates with the discharging cavity, the interior of the discharging pipe is divided into a solid discharging channel and a liquid discharging channel, and the solid discharging channel and the liquid discharging channel are used for discharging solid waste and liquid waste in the containing cavity correspondingly. According to the multi-stage spraying type flue gas desulfurization device disclosed by the invention, solid-liquid separation of waste materials can be realized by the multi-stage spraying type flue gas desulfurization device.

The invention discloses a system and a method for optimizing operation of a flue gas desulfurization device under the working condition of flexible peak regulation of a unit. The system comprises an A unit induced draft fan flue gas coming pipeline, a first baffle door, an A unit desulfurization absorption tower, a B unit induced draft fan flue gas coming pipeline, a second baffle door and a B unit desulfurization absorption tower, a flue gas pipeline of the induced draft fan of the unit A is communicated with an inlet of the desulfurizing absorption tower of the unit A through a first baffle door, the flue gas pipeline of the induced draft fan of the unit A is communicated with a flue gas pipeline of the induced draft fan of the unit B through a connecting pipeline, and the flue gas pipeline of the induced draft fan of the unit B is communicated with an inlet of the desulfurizing absorption tower of the unit B through a second baffle door; according to the system and the method, the pollutant removal effect of the desulfurization system under the medium-low load working condition can be effectively guaranteed, and the comprehensive operation energy consumption of the system can be reduced.

The invention relates to the technical field of circulating fluidized bed flue gas desulfurization, and discloses an automatic control system applied to a CFB desulfurization digester. The feeding unit is used for conveying quick lime and comprises a quick lime bin, a screw feeder and a belt conveying scale which are connected in sequence, and the belt conveying scale is in signal connection with the digestion automatic controller; the digestion reaction unit comprises a three-stage digester and a plurality of digestion thermometers arranged in the three-stage digester, and the digestion thermometers are in signal connection with the digestion automatic controller. The water-cement ratio is dynamically adjusted by monitoring the temperature change trend in real time, fluctuation of the quality of quick lime can be automatically adapted, and the limitation of fixed water-cement ratio control is overcome; by searching the optimal water-cement ratio, the full digestion of the quick lime is ensured, and the activity and uniformity of the slaked lime product are improved; and moreover, the dependence on artificial experience is reduced through automatic control, and the stability and continuity of system operation are improved.

The invention discloses a thermal power plant wet desulphurization device and a desulphurization method thereof, and belongs to the field of wet desulphurization. Comprising a desulfurization mechanism, and a mixing mechanism is arranged on the left side of the desulfurization mechanism; a filtering mechanism is arranged on the right side of the desulfurization mechanism; the mixing mechanism comprises a mixing box, the upper surface of the mixing box is fixedly connected with a storage box, and a plurality of discharging holes are fixedly communicated between the storage box and the mixing box; an L-shaped baffle plate is arranged above the inner side of the mixing box; when the device is used, the liquid pump is started, waste gas is uniformly sprayed into the desulfurization tower through the multiple first spray heads, meanwhile, the gas pump is started to extract the waste gas, the waste gas is uniformly sprayed into the desulfurization tower through the multiple second spray heads, and the purification liquid and the waste gas are uniformly sprayed out, so that the purification liquid and the waste gas can fully react in the desulfurization tower to realize the desulfurization process; and the purification liquid is sprayed again through a plurality of nozzles I, so that the problem of insufficient utilization of the single-time spraying type purification liquid is avoided.

The invention discloses a method and system for controlling PM emission concentration of a coal-fired unit, and belongs to the technical field of coal-fired power generation. According to the method for controlling the PM emission concentration of the coal-fired unit, the inlet PM concentration, the slurry circulation flow and the inlet flue gas flow velocity of a wet flue gas desulfurization system, the flue gas temperature and the flow velocity of an outlet of a low-temperature economizer and the real-time load of the coal-fired unit are comprehensively considered, and an accurate feed-forward instruction is generated; according to the method, a feedforward instruction and a main instruction calculated by a PID (Proportion Integration Differentiation) control algorithm are combined to dynamically and accurately adjust the dust removal voltage of the electric dust removal system, so that the PM emission concentration of a coal-fired unit is effectively controlled, and the coal-fired unit can keep stable emission performance even in a frequent load change or low load operation state.

The invention provides a desulfurization device for improving flue gas purification efficiency and an operation method of the desulfurization device. A flue gas blending flue, a flue gas blocking valve and a gas exchange device are utilized to construct a dual-system flue gas dynamic blending mechanism; when the desulfurization efficiency of any system is reduced and the pollutant emission exceeds the standard due to the fact that the slurry circulating pump is overhauled and stopped, the slurry quality is poor, the sulfur content at the inlet exceeds the standard and the like, the control system can automatically open the corresponding flue gas blocking valve and the gas exchange device according to the real-time data of the online flue gas measuring instrument, and the flue gas of the standard-exceeding system is conveyed to the standard-reaching system to be treated; and the flue gas load dynamic balance between the double systems is realized. The design effectively solves the problem that a single wet flue gas desulfurization system is insufficient in treatment capacity under the working conditions of equipment abnormity, slurry performance fluctuation or sudden sulfur content change and the like, the overall flue gas purification efficiency is remarkably improved through cooperation and complementation of the double systems, stable up-to-standard emission of pollutants such as sulfur dioxide and the like is ensured, and the economic benefit is increased. And the method has high adaptability and operation reliability for coping with complex working conditions.

The present application relates to a flue gas desulfurization tower, belonging to the technical field of flue gas treatment. It includes a tower body, a flue gas inlet pipe, a first liquid distributor, a second liquid distributor, a regulating ball, and a regulating assembly. The flue gas inlet pipe penetrates through the tower body. The first liquid distributor is arranged at the smoke outlet end of the flue gas inlet pipe and is connected with a first liquid supply pipe. The second liquid distributor covers the first liquid distributor and is connected with a second liquid supply pipe. The regulating ball is located in the first liquid distributor and is used to move upward under the impact of sulfur-containing flue gas. The regulating assembly includes a regulating rack, a regulating gear, a first-stage regulating part, and a second-stage regulating part. When the regulating ball moves upward, it drives the first-stage regulating part to act through the regulating rack and the regulating gear, and the first-stage regulating part drives the second-stage regulating part to act. The first-stage regulating part first adjusts the first liquid supply pipe to open to the maximum state, and then the second-stage regulating part adjusts the second liquid supply pipe to open to the maximum state. The present application has the effect of enabling the spraying amount of the alkali solution to be dynamically adapted to the amount of flue gas introduced into the desulfurization tower.

The invention relates to the technical field of flue gas desulfurization, in particular to a thermoelectric boiler flue gas desulfurization and waste liquid integrated treatment device and method, and the device comprises a desulfurization cylinder, a collection cylinder and a storage cylinder; the collecting cylinder is mounted at the bottom end of the desulfurization cylinder, the desulfurization cylinder is communicated with the storage cylinder, and the cleaning mechanism is mounted in the desulfurization cylinder; the liquid outlet mechanism is mounted in the desulfurization cylinder and is used for spraying desulfurization liquid; the cleaning mechanism comprises a driving assembly, a power storage assembly, a transmission assembly, a filtering assembly, a vibration assembly and a first inserting part; the driving assembly is mounted on the desulfurization cylinder and is used for driving the power storage assembly to rotate for power storage and driving the liquid outlet mechanism to spray the desulfurization liquid; the force storage assembly is installed in the driving assembly. A conical block is extruded to move, so that a filter plate vibrates, large-particle impurities in waste liquid are filtered through the filter plate in a filter box, the filter plate vibrates at intervals, and the situation that the filter plate is blocked is avoided.

The invention belongs to the technical field of flue gas desulfurization, and particularly relates to a preparation method of an acid-base indicator modified dry-process alkaline absorbent and application of the acid-base indicator modified dry-process alkaline absorbent in dry-process desulfurization. In surface modification, an alkaline absorbent particle is used as an inner core, an alkaline absorbent and an absolute ethyl alcohol solution of an acid-base indicator (such as phenolphthalein and sulfophenolphthalein) are uniformly mixed, and after absolute ethyl alcohol is completely volatilized, a coating layer is formed on the surface layer of the particle. Through interaction of the modifier and the alkaline desulfurizer, modified desulfurizer particles are uniform in color such as purple red or blue. The modified dry desulfurization agent provided by the invention can significantly improve the SO2 capture capability, and experiments verify that under the same conditions, the SO2 absorption amount of the acid-base indicator modified sodium carbonate is 3-6 times that of unmodified sodium carbonate. In addition, the method is used for other dry alkaline desulfurizers (including but not limited to sodium bicarbonate, calcium hydroxide, calcium oxide, magnesium hydroxide and the like), and has the potential of improving the desulfurization performance under proper conditions.

The invention discloses an efficient desulfurization structure for kiln tail flue gas, and relates to the technical field of kiln tail flue gas desulfurization. The high-efficiency desulfurization structure for the kiln tail flue gas comprises a desulfurization tower, a gas inlet flue communicated with the left part of the desulfurization tower and a gas exhaust flue communicated with the upper part of the desulfurization tower, the desulfurization tower is provided with a multi-dimensional spraying part used for adjusting the longitudinal spraying range and the radial spraying range of a desulfurization water agent according to the concentration and the flow speed of the kiln tail flue gas, and an inner ring pipe is fixedly connected with a ring sleeve; a plurality of fixed arc-shaped baffles are fixedly connected to the upper portion of the inner ring pipe in the circumferential direction at equal intervals, and a plurality of movable arc-shaped baffles used for being matched with the fixed arc-shaped baffles are fixedly connected to the outer wall of the sliding sleeve in the circumferential direction at equal intervals. And full-coverage spraying of the desulfurization water agent in the flue is realized through the multi-dimensional spraying part, and the spraying range can be dynamically adjusted according to the flue gas concentration and the flow velocity, so that efficient desulfurization is realized.