1252 results about "Flue-gas desulfurization" patented technology

The invention relates to a flue gas desulfurization device, and relates to the technical field of flue gas treatment.The flue gas desulfurization device comprises a barrel, the outer side of the barrel communicates with a flue gas inlet pipe, the top of the barrel communicates with a flue gas outlet pipe, and a filtering mechanism and a spraying mechanism are arranged in the barrel; the filtering mechanism comprises a mounting circular frame and a plurality of filtering units, the mounting circular frame is coaxially arranged in the cylinder body, a plurality of mounting sockets are formed in the outer side of the mounting circular frame, the filtering units correspond to the mounting sockets one to one, and the filtering units are matched with the corresponding mounting sockets in an inserted mode; a plurality of filter hole groups are formed in the upper side of the mounting circular frame in a penetrating manner, are in one-to-one correspondence with the mounting sockets and are communicated with the corresponding mounting sockets; a plurality of replacement ports are formed in the outer side of the barrel, correspond to the mounting insertion ports one to one and are communicated with the corresponding mounting insertion ports in an opposite manner, and the filter units are matched with the corresponding replacement ports in an insertion manner. The shutdown time of the flue gas desulfurization device can be shortened, and the flue gas desulfurization efficiency is guaranteed.

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 relates to the technical field of desulfurizers, and discloses a macromolecular adhesive calcium-based flue gas desulfurizer and a preparation method thereof.The desulfurizer comprises, by mass, 300-450 parts of slaked lime, 30-120 parts of calcium carbonate and 3-30 parts of auxiliaries, and the ratio of the slaked lime to the calcium carbonate to the auxiliaries is (300-450): (30-120): (3-30). The desulfurizer obtained by the invention has relatively good activity and relatively good desulfurization effect.

The invention relates to the technical field of waste gas treatment, in particular to a heat supply plant boiler flue gas desulfurization device which comprises a desulfurization tower, a gas inlet is formed in one side of the bottom of the desulfurization tower, a gas outlet is formed in the top of the desulfurization tower, and the heat supply plant boiler flue gas desulfurization device further comprises a fixing frame fixedly arranged on the inner side of the desulfurization tower; the constant-speed spraying units are rotationally arranged on the fixing frame, and a speed reducing mechanism is arranged between every two adjacent constant-speed spraying units; the driving assembly is arranged on the fixed frame and is used for driving the constant-speed spraying unit to rotate in the desulfurizing tower; the gas distribution assembly is arranged at the bottom of the fixing frame and can uniformly disperse flue gas introduced from the gas inlet into the desulfurization tower, according to the boiler flue gas desulfurization device for the heat supply plant, through the designed gas distribution assembly and the constant-speed spraying unit, the flue gas can be uniformly distributed in the desulfurization tower and is fully mixed and reacted with alkali liquor, so that an efficient desulfurization effect is achieved, and the desulfurization efficiency is improved. The content of sulfur oxides in the flue gas is greatly reduced, and the environmental protection requirement is met.

A coal-fired flue gas desulfurization and demercuration device comprises a flue gas input module, the flue gas input module is a flue and desulfurization and demercuration absorption tower connecting device, and the flue outlet end of a power plant can be connected with the inlet end of a desulfurization and demercuration absorption single tower; the outlet end of the desulfurization and demercuration absorption single tower is connected with the inlet end of the tail gas treatment module through a second three-way valve; the flue gas input module is used for introducing flue gas containing SO2 and mercury ions into the absorption single tower; after entering the desulfurization and demercuration absorption single tower, flue gas flows upwards to pass through a multi-stage nozzle arranged in the absorption tower and a corresponding gas distribution plate below the nozzle, and desulfurization and demercuration operation is carried out; according to the utility model, the single-tower combined desulfurization and demercuration technology is realized, the process flow and the device structure are simplified, the number of common multi-tower arrangement is reduced, the operation and the maintenance are simple, the space is saved, and the material consumption cost is reduced; the method can be applied to coal-fired power plant boilers, industrial boilers, garbage incinerators and the like, is particularly suitable for transforming built small and medium-sized coal-fired boilers, and has a wide market application prospect.

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.

A pipeline connecting structure for flue gas desulfurization and denitrification belongs to the field of pipeline connection and comprises two pipelines, the two pipelines are communicated and connected through a connecting box, through grooves communicated with the pipelines are sequentially formed in the side face of the connecting box and correspond to the pipelines, a rotating pipe is rotatably installed in the connecting box, and the through grooves in the two sides are communicated through the rotating pipe. The pipeline, the through groove and the rotating pipe form a flue gas pipeline, and a spiral blade ring is arranged in the flue gas pipeline. The device is simple in structure and ingenious in conception, small airflow forms spiral airflow through the spiral blade ring, and the cleaning effect of the airflow on a flue gas pipeline is improved; large airflow enables the spiral blade ring to rotate, the spiral blade ring scrapes and cleans the inner wall of the pipeline, smoke dust accumulation and blockage in the smoke pipeline are reduced, the actual requirement can be met, and the device is suitable for popularization.

The invention belongs to the technical field of flue gas purification, and relates to a method and a device for improving calcium-based dry desulfurization efficiency by nano-fluid dynamic jetting, the method comprises the following steps: delivering flue gas to be treated into a desulfurization reactor through a flue gas pipeline, and jetting a desulfurizing agent into the flue gas pipeline and / or the desulfurization reactor for flue gas desulfurization; and dynamically spraying the nanofluid into a desulfurization reactor and / or a flue gas pipeline so as to be mixed with a desulfurizing agent in the desulfurization reactor and / or the flue gas pipeline to form a desulfurization reaction area. According to the invention, the nanofluid is dynamically jetted into the desulfurization reactor and / or the flue gas pipeline through the control system by utilizing the nano-jet, the nanofluid can enable a desulfurizing agent to expose reaction active sites in time, meanwhile, the nanofluid contains nano-particles for improving desulfurization reaction, and the nanofluid can properly reduce the flue gas temperature, so that the desulfurization effect is improved. A liquid film is formed on the surface of the desulfurizing agent, so that SO2 and the desulfurizing agent quickly react in an ionic state, and the aim of improving the calcium-based dry desulfurization efficiency is fulfilled.

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.

According to the graphitization furnace flue gas desulfurization system and method, the mixer and the desulfurization slurry storage tank are arranged, desulfurization slurry in the desulfurization slurry storage tank is pumped into the mixer through the liquid transfer pump to be mixed with flue gas output by the graphitization furnace, sulfur dioxide in the flue gas is absorbed, and meanwhile the desulfurization slurry is discharged through the liquid transfer pump. Drying the desulfurized slurry by using the heat of the flue gas, and reducing the temperature of the flue gas; meanwhile, the dust remover is used for removing dust of the flue gas and then introducing the flue gas into the gas washing device for washing. The device disclosed by the invention is matched with the devices for use, so that the wastewater output in the gas washing process can be effectively reduced, and the treatment cost of an enterprise is reduced. In addition, the flue gas is desulfurized by the desulfurization slurry and desulfurized by the gas washing device through the mixer, so that the consumption of absorption liquid in the gas washing device is saved, and the desulfurization effect can be improved by combining the desulfurization slurry and the gas washing device.

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.