218results about How to "Improve desulfurization efficiency" patented technology

The invention relates to the technical field of waste rubber recovery, in particular to a method for preparing a rubber compound by recycling waste rubber and the prepared rubber compound. The high-shear mechanical desulfurization technology is combined, the desulfurization efficiency is further improved through the synergistic effect of various components in the compound auxiliary, and meanwhile the plasticity of the waste rubber and the compatibility of the waste rubber and new rubber are enhanced. The method not only can effectively destroy the cross-linked structure of the waste rubber, but also can be used for preparing a high-performance rubber compound product by mixing the waste rubber with a new rubber material through a subsequent mixing process, and is widely applied to manufacturing high-strength and wear-resistant rubber products, such as solid tires and the like.

The invention discloses a rotary counter-hedge industrial waste gas desulfurization system and a process thereof, comprising a reaction cylinder, wherein a top cover is fixedly connected to the top of the reaction cylinder, and an air inlet pipe is arranged on one side of the top cover; the rotary stirring action of the transmission blades is helpful to maintain the uniform distribution and flow state of the gas-liquid two phases in the mixing cylinder, which can accelerate the material diffusion and mass transfer process, and can increase the gas-liquid contact surface, thereby improving the efficiency of the desulfurization reaction; at the same time, the dirt, sediment and residue on the inner wall surface of the reaction cylinder and the mixing cylinder are cleaned by a soft scraper and a cleaning brush, thereby reducing the obstruction of the dirt to the gas-liquid reaction, allowing the gas and liquid to flow and mix more smoothly, thereby improving the desulfurization efficiency of the equipment, and the continuously rotating nozzle can make the reaction liquid spray into the waste gas in a more uniform and wider manner, thereby increasing the contact area of ​​the gas-liquid two phases, thereby accelerating the mixing effect between the waste gas and the reaction liquid.

The invention belongs to the technical field of flue gas treatment, and particularly relates to a flue gas desulfurization and denitrification integrated device and method for a blast furnace hot blast stove. An outlet of a heat exchanger is connected with a booster fan, a cold air mixing valve is connected between the heat exchanger and the booster fan, and an outlet of the booster fan is connected with an inlet flue of a semi-fixed bed adsorption tower; an outlet flue is arranged on the side wall of the semi-fixed bed adsorption tower, the outlet flue and the inlet flue are arranged on different sides of the semi-fixed bed adsorption tower, the reducing agent storage device is connected with the injection structure, the injection structure is inserted into the inlet flue wall of the semi-fixed bed adsorption tower through a pipeline, and the semi-fixed bed adsorption tower is connected with the bed intermittent operation control system. An outlet pipeline at the bottom of the semi-fixed bed adsorption tower is connected with a discharging chain, the discharging chain is connected with a discharging bin, a feeding opening in the top end of the semi-fixed bed adsorption tower is connected with a feeding chain, and the feeding chain is connected with a feeding bin. The device completes desulfurization and denitrification in the semi-fixed bed adsorption tower, no additional device is needed for denitrification, the occupied area is small, and the investment is low; by-products can be comprehensively utilized, and zero waste discharge is realized.

The invention relates to the technical field of metallurgy, in particular to a preparation method of composite calcium ferrite, which comprises the following steps: mixing and grinding pretreated industrial copperas and pretreated titanium gypsum to obtain a mixture, or mixing and grinding dried industrial copperas and pretreated titanium gypsum to obtain a mixture; mixing the mixture with water, pressing the mixture into blocks, and drying the blocks to obtain a blocky mixture; and calcining the blocky mixture to obtain the composite calcium ferrite. The titanium gypsum is rich in calcium, sulfur and a part of iron, the industrial copperas are mainly ferrous sulfate, the two solid wastes are mixed and calcined, the mixture is decomposed to generate sulfur dioxide and can be recycled to prepare sulfuric acid, calcium and iron are combined to form composite calcium ferrite, valuable elements such as calcium, sulfur and iron in the titanium gypsum and the industrial copperas can be fully utilized, and the industrial copperas can be recycled. And resource comprehensive utilization of typical solid wastes in the titanium dioxide production industry is realized.

The invention discloses a pneumatic emulsification desulfurization device capable of adapting to large fluctuation of gas flow, and relates to the technical field of resource recovery and utilization equipment. The device comprises a gas homogenizing chamber, a gas inlet is formed in the gas homogenizing chamber, and a fluid director is mounted in the gas homogenizing chamber; the plurality of pneumatic units are mounted at the top of the gas uniformizing chamber, a cyclone is mounted in each pneumatic unit, the flue gas amount treated by each pneumatic unit is the same, and gas amount adjusting devices are mounted at the tops of part of the pneumatic units; and the atomizing chamber is mounted at the top of the pneumatic unit. When the device is used, after entering the gas homogenizing chamber, flue gas can fill the upper part of the whole gas homogenizing chamber under the action of the fluid director, so that the flue gas in the gas homogenizing chamber can uniformly enter each pneumatic unit, the non-uniform distribution of the flue gas is prevented, and the purposes of uniform gas quantity of each filter unit and stable desulfurization efficiency are achieved.

The invention relates to the technical field of thermal power plant equipment, in particular to a coal washing device for thermal power generation. The plurality of outer supports stacked in the vertical direction comprise a cylindrical shell and a hopper-shaped shell at the bottom of one side of the cylindrical shell, a feed port and a discharge port are formed in the top end and the bottom end of the cylindrical shell, and a feed hopper is in butt joint with the feed port in the top end; the rear end of the inner supporting column is fixed to the center of the rear wall of the inner cavity of the cylindrical shell. The rotary barrel is arranged outside the inner supporting column, and a plurality of strip-shaped grooves are formed in the barrel-shaped shell; the magnetic attraction assembly comprises a plate-shaped magnet inserted into the strip-shaped groove in a sliding mode, a connecting column fixed to the inner end of the plate-shaped magnet, a cambered surface column body fixed to the inner end of the connecting column and a spring arranged outside the connecting column in a sleeving mode. The scraping plate is tangent to the peripheral wall of the rotating cylinder; the stirring piece is arranged on one side, far away from the cambered surface bulge, of the inner cavity of the cylindrical shell; the impurity discharging pipeline is connected with the bottom end of the hopper-shaped shell; an output shaft of the driving motor sleeves a shaft sleeve at the front end of the rotating cylinder; and the thermal power generation coal washing device realizes efficient desulfurization treatment on coal.

The utility model discloses a desulfurizing absorption tower synergistic device which comprises a multiphase flow reinforced rotary-cut turbulent flow unit arranged at the upper part in a tower body of a first-stage absorption tower, and the multiphase flow reinforced rotary-cut turbulent flow unit is arranged between a spraying layer and a flue gas inlet in the absorption tower; the multiphase flow reinforced rotary-cut turbulent flow unit comprises a horizontal mounting plate and a turbulent flow module arranged on the mounting plate; the turbulent flow module comprises an inner cylinder, a middle cylinder and an outer cylinder, the inner cylinder is sequentially sleeved with the middle cylinder and the outer cylinder, first blades are evenly distributed between the middle cylinder and the outer cylinder in the circumferential direction, and second blades are evenly distributed between the inner cylinder and the middle cylinder in the circumferential direction. Slurry sprayed by the spraying layer and rising flue gas are fully mixed under the action of the multiphase flow reinforced rotary-cut turbulent flow unit and then fall to the bottom of the absorption tower. The spirally rising flue gas can increase the gas-liquid contact area and improve the gas-liquid mass transfer rate, so that the desulfurization and dust removal efficiency is improved.

The invention relates to a method for stably controlling the pH value of desulfurization slurry based on theoretical slurry supply amount, which belongs to the field of desulfurization and comprises the following steps: (1) calculating the mass and the amount of substance of SO2; (2) calculating the mass of CaCO3 required for absorbing SO2; (3) calculating the basic slurry supply flow for keeping the pH value of the absorption tower unchanged during SO2 absorption, obtaining the CaCO3 mass required for SO2 absorption through the step (2), obtaining the limestone slurry density through a limestone slurry densimeter, and obtaining the required limestone slurry supply amount; (4) calculating the pH deviation limestone slurry flow compensation amount; and (5) obtaining a theoretical slurry supply amount. The method has the advantages that the problem that the slurry supply amount cannot rapidly track the change of boiler load and the sulfur content of fire coal during normal operation of a normal thermal power generating unit is solved, the fluctuation range of slurry supply is reduced, and the pH value of slurry in an absorption tower is kept within a proper change range.

The invention discloses a triazine desulfurizer and a preparation method thereof, and belongs to the technical field of gas purification. The triazine desulfurizer is mainly prepared from the following raw materials in percentage by weight: 20 to 50 weight percent of triazine derivative, 10 to 15 weight percent of sterically hindered amine, 3 to 7 weight percent of stabilizer, 1 to 3 weight percent of synergist, 0.5 to 1.5 weight percent of penetrant, 0.5 to 1.5 weight percent of inhibitor, 1 to 2 weight percent of additive and the balance of water, the preparation method of the triazine derivative comprises the following steps: adding 2-(diphenylphosphino) ethylamine into a toluene solvent, adding a paraformaldehyde aqueous solution in batches under a stirring condition, and reacting for 2-8 hours to obtain the triazine derivative. According to the triazine desulfurizer and the preparation method thereof provided by the invention, the triazine derivative and the sterically hindered amine are taken as a host, and the stabilizer, the synergist, the penetrant, the inhibitor and the assistant are compounded, so that the scaling trend of the triazine desulfurizer in an oil and gas well can be slowed down, the dissolution rate of hydrogen sulfide and the mass transfer rate in a solution are increased, and the desulfurization reaction is promoted; the desulfurization effect and the desulfurization rate are improved, and meanwhile, a very good scale inhibition effect is also achieved.

The invention discloses a furnace rear flue gas water-cooling comprehensive temperature control system and a matched cooling water amount control method, and particularly relates to the technical field of flue gas purification and environmental protection, the furnace rear flue gas water-cooling comprehensive temperature control system comprises a semi-dry desulfurization tower, a cyclone dust collector, a bag-type dust collector and a low-temperature SCR denitration device of which the output ends are sequentially communicated in series; the outlet flue of the cyclone dust collector and the inlet flue of the bag-type dust collector are respectively and fixedly communicated with a communicating flue which is connected with an electric air door in series, and the surface type water-cooling flue gas cooling system comprises a water-cooling flue gas cooler which is at least communicated with a cooling water supply pipeline. A comprehensive temperature control system combining a surface type water cooling flue gas cooling system and a flue gas emergency water spraying cooling system is adopted, a matched cooling water amount control algorithm is formulated from the enthalpy value heat balance principle, the surface type cooling water flow and the spraying water amount are accurately controlled, it is effectively ensured that the boiler rear flue gas temperature meets the flue gas purification process requirement, and the boiler rear flue gas purification efficiency is improved. Meanwhile, heat released in the flue gas cooling process is recycled, and the circulating efficiency of the power plant is further improved.

The invention discloses a preparation method and application of an efficient desulfurizing agent, and belongs to the technical field of desulfurizing agent preparation. The preparation method of the efficient desulfurizing agent comprises the following steps: step 1, adding ferric salt and magnesium salt into a container containing distilled water, stirring and dissolving to obtain a mixed solution A, then adding a modified template agent and a pore-forming agent into the container containing distilled water, stirring and dissolving to obtain a mixed solution B; 2, uniformly mixing the mixed solution A and the mixed solution B, heating and stirring to obtain a colloidal solid C, freeze-drying the colloidal solid C, calcining and grinding to obtain a spongy composite oxide; and step 3, adding the spongy composite oxide into a tetrahydrofuran solution containing the modifier, sealing and stirring, putting into a reaction kettle, carrying out hydrothermal reaction, and after the reaction is finished, filtering, washing and drying to obtain the efficient desulfurizer. The high-efficiency desulfurizing agent prepared by the method has an excellent desulfurizing effect.

The invention discloses a performance evaluation method for limestone wet desulphurization slurry of a coal-fired power plant, which comprises the following steps: (1) selecting proper evaluation indexes which can comprehensively reflect the performance of the desulphurization slurry and the desulphurization efficiency of the coal-fired power plant, and the core indexes comprise oxidation reduction potential (ORP), pH value, slurry density and desulphurization efficiency; (2) evaluation grades are determined, and evaluation results are divided into an excellent grade, a good grade, a medium grade and a poor grade; and (3) constructing a membership function, using a triangular membership function or a trapezoidal membership function for each evaluation index, and converting data into a membership value to facilitate comprehensive evaluation. And (4) calculating the weight of each index by using an entropy weight method, and calculating the comprehensive membership degree by using a weighted geometric averaging method. And (5) determining a final evaluation grade according to the comprehensive membership degree. The performance of the desulfurization slurry can be comprehensively evaluated, decision support is provided for stable operation of a desulfurization system of a coal-fired power plant, and field operators are helped to perform optimization operation of the desulfurization system.

The utility model discloses a circulating fluidized bed desulfurizing tower. The desulfurization tower at least comprises a desulfurization tower inlet section, a Venturi tube group, a divergent section, a straight tube section and an outlet section which are sequentially and continuously arranged from bottom to top, the desulfurizing tower inlet section comprises a square flue, a transition flue and a circular flue which are connected in sequence; the square flue comprises a 90-degree elbow, and a flue gas inlet is positioned on the horizontal square flue in front of the 90-degree elbow; the 90-degree elbow is internally provided with a flow guide device for preventing flue gas from generating bias flow after the flue gas passes through the elbow; and a rotational flow assembly is arranged at the divergent section of the desulfurizing tower. According to the utility model, when part of flue gas at the outlet of the Venturi tube enters the divergent section of the desulfurization tower, the flow direction is changed under the flow guide action of the blades to form rotational flow. Under the action of centrifugal force of rotational flow, more desulfurizing agents are thrown to the periphery of the desulfurizing tower and decelerated in the rising process, and then fall back to the divergent section, so that the proportion of the internal circulation desulfurizing agent is increased.

The invention relates to the technical field of flue gas desulfurization, in particular to a limestone-gypsum wet desulfurization device, which is characterized in that a plurality of spray pipes are annularly arranged in a desulfurization tower, and spray holes are formed along the circumferential surfaces of the spray pipes, so that limestone slurry is horizontally sprayed out, the direct impact of flue gas on the spray holes and the attachment of reactants are effectively avoided, and the desulfurization efficiency is improved. And the blocking risk is reduced. And meanwhile, the horizontally sprayed slurry can clean the surface of the spraying pipe, so that blockage is further prevented. Due to the synchronous lifting and rotating design of the first lifting plate and the stirring blades, the mixing and stirring of slurry with different heights in the desulfurization tower are enhanced, and the stirring efficiency is improved. The second lifting plate and the first lifting plate act synchronously, impurities in the spraying holes are cleaned through a brush, and blockage caused by limestone slurry impurities is avoided. Due to the design, the desulfurization efficiency is improved, the maintenance work is simplified, the maintenance cost is reduced, and the stability and the reliability of the system are enhanced.

The invention discloses a method and a system for online monitoring a crystallization metastable region of a high-impurity-content and low-light-transmittance crystallization system by an image method assisted conductivity method, and belongs to the field of industrial crystallization data testing. The system comprises a slurry pre-separating tank, a solution receiving tank, a crystal nucleus responder, a crystallization circulating water tank, a slurry conveying pump, a circulating water pump, a crystallization circulating water pump, a combined filter, a circulating water filter, a circulating water heater, first to thirteenth valves and vacuumizing equipment. According to the method, crystal nucleus formation can be quickly responded, the reliability and repeatability of crystallization metastable zone data determination are improved, AMASOX, GE, NKK and other ammonia process desulfurization by-product ammonium sulfate are guided to be properly nucleated in a crystallization metastable zone, crystals with large particle sizes are generated, and separation of ammonium sulfate crystals by a centrifugal machine is facilitated. According to the method, the ammonia desulfurization efficiency is improved, SO2 in the sulfur-containing flue gas is recycled to generate high-quality ammonium sulfate, and the method has certain economic benefits and environmental protection benefits.

The invention discloses a cement hot raw material desulfurization process and a desulfurization device. The desulfurization process comprises the following steps: (1) taking out a high-temperature solid hot raw material from a C5-grade cyclone blanking pipe; (2) mixing the taken-out high-temperature solid hot raw material with air flow for primary cooling; (3) carrying out gas-solid separation on the hot raw material mixed with the gas, and carrying out secondary cooling by using atomized water to obtain a low-temperature hot raw material; (4) metering the obtained low-temperature hot raw material, adding the low-temperature hot raw material into a digester, and carrying out digestion reaction on the low-temperature hot raw material and digestion water in the digester to generate calcium hydroxide; (5) conveying the digested material into a powder bin for temporary storage; and (6) metering the material temporarily stored in the powder bin, adding the material into a first air pipe from the C2 cyclone separator to the C1 cyclone separator, and carrying out desulfurization treatment. The process method provided by the invention has the advantages of small influence on a preheater system, low energy consumption, high desulfurization efficiency, small use amount of a desulfurizing agent and stable desulfurization effect, and can adapt to a working condition with relatively large SO2 concentration fluctuation.

The invention relates to the technical field of flue gas desulfurization, in particular to a power plant environment-friendly desulfurization chimney filtering and discharging device which comprises a base and a flow guide filtering assembly. The flow guiding and filtering assembly comprises a desulfurization table arranged at one end of the base, a desulfurization cavity part, a lining body, a thermal insulation cylinder, a lifting plate and filter cloth, the desulfurization table is provided with a cavity, the thermal insulation cylinder is located between the lining body and the desulfurization cavity part, the lifting plate is arranged in the middle of the lining body, a plurality of pieces of filter cloth are arranged at the top of the lifting plate, and the filter cloth is arranged in a stacked mode. According to the environment-friendly desulfurization chimney filtering and discharging device for the power plant, the contact area of flue gas and the device can be increased, and the desulfurization efficiency is improved.

The invention discloses a high-sulfur iron ore concentrate pellet desulfurizing agent and a method for strengthening high-sulfur iron ore concentrate pellet desulfurization, and belongs to the technical field of iron ore pellet production. The high-sulfur iron ore concentrate pellet desulfurizing agent comprises calcium peroxide powder, direct reduction iron powder dust and manganese dioxide powder, the desulfurizing agent participates in pyrite-containing iron ore pelletizing, obtained green pellets are sequentially subjected to forced air drying, preheating and roasting, and finished pellets are obtained. According to the method, the desulfurization efficiency of the high-sulfur iron ore concentrate pellets in the drying and preheating process can be remarkably improved through the desulfurizer, and meanwhile the technical problem that the pellet strength is reduced due to the fact that a large amount of SO2 is adsorbed when the pellets are dried and sulfate shells are formed on the surfaces of the pellets can be solved by removing air draft drying. The method is simple to operate, low in production cost and environment-friendly, and meets the requirements of industrial production.

The present invention provides a dry desulfurization agent for comprehensive utilization of solid waste materials, and a preparation method and application thereof. The dry desulfurization agent composition of the present invention comprises, by weight: 30 to 60 parts of white mud; 10 to 40 parts of manganese slag; and 5 to 20 parts of a binder. In some embodiments of the present invention, the manganese slag is electrolytic manganese slag. The present invention provides a new way to comprehensively utilize manganese slag, reduces environmental pollution and safety risks caused by the stacking of manganese slag, and improves the economic benefits of the smelting plant.

The invention discloses a calcium-based dry flue gas desulfurization system, which relates to the technical field of industrial desulfurization, is suitable for a gas power plant, and comprises a desulfurization reactor, a first desulfurizer storage bin, a first weighing feeder and a first heating device; the first desulfurizing agent storage bin is used for accommodating high-activity calcium hydroxide powder; the first weighing feeder is connected between the desulfurization reactor and the first desulfurizer storage bin and is used for conveying high-activity calcium hydroxide powder into the desulfurization reactor to react with sulfide; the first heating device is mounted in the first desulfurizing agent storage bin and is used for heating the high-activity calcium hydroxide powder. According to the technical scheme, the high-activity calcium hydroxide powder is heated by the first heating device mounted in the first desulfurizing agent storage bin, so that the high-activity calcium hydroxide powder is prevented from absorbing water and being hardened, and the desulfurizing efficiency of the system is further improved.

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 flushing structure at the dry and wet interface of an absorption tower flue, which relates to the technical field of flushing equipment and comprises a flue body and an absorption tower body, the flue body is provided with a 90-degree break angle communicated with the side wall of the absorption tower body, the side wall of the flue body is fixedly connected with a hydraulic cylinder, and one end of the hydraulic cylinder penetrates through the inner wall of the flue body. The end, located in the flue body, of the hydraulic cylinder is movably connected with a hydraulic push rod, the side wall of the hydraulic push rod is fixedly connected with an installation base, the side wall of the installation base is fixedly connected with a servo motor, and the output end of the servo motor penetrates through the inner side wall of the installation base. Compared with the prior art, the device has the advantages that the flushed large scaling blocks can be efficiently crushed, the scaling blocks are ensured to be quickly crushed under the action of bidirectional shearing force, the risk that blades of the side-entering stirrer of the absorption tower are damaged is further reduced, and meanwhile, the possibility that a filter screen at an inlet of a slurry circulating pump is blocked is also reduced.

The utility model discloses a gas-liquid separation device at the flue inlet of desulfurizing absorption tower, wherein the inner wall of the absorption tower is communicated with a flue, the gas-liquid separation device comprises an arc-shaped plate and at least two triangular supporting pieces, the near end of the arc-shaped plate is welded above a flue opening of the inner wall of the absorption tower, and sawteeth are arranged at the far end of the arc-shaped plate. The length of the arc-shaped plate is larger than that of the flue opening. And the inclined edge of the triangular supporting piece is welded with the lower surface of the arc-shaped plate. According to the utility model, the direct scouring of sprayed slurry to the flue opening of the absorption tower is avoided, the slurry is prevented from flowing back to the flue along the upper top plate of the original flue, the formation and accumulation of gypsum deposits on a dry and wet interface are effectively reduced, and the safe and stable operation of a desulfurization system is ensured; meanwhile, due to the design and installation of the gas-liquid separation device, escape of the flue gas along the wall of the absorption tower is reduced, and due to the zigzag design, the flue gas and slurry are more fully contacted in the space section, so that the desulfurization efficiency is further improved.

The pre-desulfurization anti-blocking device comprises a tower body and a pre-desulfurization box, the left side of the lower part of the tower body is communicated with a smoke inlet pipe, and one end, far away from the tower body, of the smoke inlet pipe is communicated with the pre-desulfurization box; according to the utility model, the pre-desulfurization box with the triangular filter box is arranged at the flue gas inlet end of the tower body, when flue gas enters the pre-desulfurization box through the flue gas supply pipe, the flue gas firstly enters the triangular filter box, and the filter screen is arranged on the inclined surface of the triangular filter box; partition plates with through holes are arranged in the triangular filtering box at equal intervals corresponding to the filtering net, so that a flue gas temporary storage cavity is formed between every two adjacent partition plates of the triangular filtering box, and a plurality of equally divided flue gas filtering intervals are formed in the filtering net under the action of the flue gas temporary storage cavities; and the flue gas can be transferred to another flue gas temporary storage cavity under the action of the through holes in the surface of the partition plate, so that the purpose of long-acting filtration of the flue gas is achieved.

The application belongs to the technical field of carbonyl sulfur hydrolysis catalysts, and discloses a high-efficiency sulfur-resistant catalyst for carbonyl sulfur hydrolysis, a preparation method and application thereof.The preparation method comprises the following steps: (1) preparing a porous ceramic carrier containing alumina, titanium dioxide and zirconium dioxide; (2) in-situ growing a metal organic framework material containing lanthanum, bismuth and cerium on the surface of the porous ceramic carrier by using a solvothermal method; (3) performing a calcination treatment on the porous ceramic carrier loaded with the metal organic framework material in an oxygen-containing atmosphere to obtain a catalyst precursor; and (4) performing a reducing gas plasma bombardment treatment on the catalyst precursor to obtain the high-efficiency sulfur-resistant catalyst.The high-efficiency sulfur-resistant catalyst has high-efficiency low-temperature activity, excellent sulfur resistance and long service life.

The invention provides a diesel oil hydrofining catalyst. The diesel oil hydrofining catalyst comprises a modified alumina carrier and an active component, the active component is an oxide of active metal, and the active metal comprises at least one of Co, Mo, Ni and W; the modified alumina carrier is alumina hydrothermally modified by ammonium fluoborate; the B / L acid value of the modified alumina carrier is 0.07 to 0.15; the specific surface area is 240-400 m < 2 > / g, and the pore volume is 0.55-0.80 mL / g. The diesel oil hydrofining catalyst containing the B acid can promote removal of sulfides with steric hindrance in distillate oil through a direct desulfurization reaction path and a hydroisomerization-direct desulfurization reaction path, promote adsorption and removal of nitrides, and reduce mutual inhibition effect in the removal process of the sulfides and the nitrides; and the diesel oil hydrofining catalyst has excellent hydrogenation activity.

The utility model discloses a flue gas purification synergistic disc, which belongs to the technical field of flue gas treatment and comprises a tubesheet, a tubesheet pore passage is arranged on the tubesheet, and a sawtooth part is arranged on the outer side of the tubesheet pore passage. The sawtooth parts of the pore channels of the tubesheet form a complex surface structure, so that the boundary length of the pore channels is increased, the contact area of gas and liquid is increased, gas-liquid mass transfer is promoted, and the gas-liquid mass transfer efficiency is improved. The device has the characteristics of simple structure, low desulfurization resistance and high desulfurization efficiency.

The present invention provides a system and method for the coordinated treatment of flue gas SO3 and desulfurization wastewater in a thermal power plant. The coordinated treatment system includes: a desulfurization wastewater magnesium extraction module, which prepares magnesium hydroxide powder by adding an alkaline solution to the desulfurization wastewater, and collects the desulfurization wastewater after demagnesization; an in-furnace SO3 removal module, which removes SO3 by adding magnesium hydroxide powder prepared by the desulfurization wastewater magnesium extraction module to the SCR reactor and / or air preheater; a bypass flue gas desulfurization wastewater spray drying module, which extracts high-temperature flue gas from the outlet of the SCR reactor, dries the desulfurization wastewater after demagnesization, and discharges the treated smoke to a dust collector. The system can simultaneously perform the coordinated treatment of flue gas SO3 and desulfurization wastewater, and has the characteristics of low initial investment, low comprehensive operating cost, simple process, and high production flexibility.

The present invention relates to a desulfurization device and a desulfurization method for collaboratively treating boiler flue gas and sulfuric acid tail gas; the device comprises a boiler tail gas system and a desulfurization system, and a sulfuric acid production device; the boiler tail gas system comprises a boiler, and the tail gas pipeline of the boiler is connected to a first pressure gauge; the desulfurization system comprises a middle and lower air inlet of a desulfurization tower, a first online analyzer is arranged at the top gas outlet of the desulfurization tower, a first packing layer is arranged at the inner upper part of the desulfurization tower, a first differential pressure gauge, a first upper flushing water spray device and a first lower flushing water spray device are arranged between the upper and lower sides of the first packing layer, and a first flushing water recovery device is arranged at the bottom of the first lower flushing water spray device; the outlet of the acid mist collector of the sulfuric acid production device is connected to the middle and lower air inlet of the desulfurization tower through a sulfuric acid tail gas pressure gauge, a pollutant detector and a first sulfuric acid tail gas air supply valve; the device has the characteristics of reasonable process design, low initial investment, low power energy consumption, high desulfurization efficiency, good desulfurization effect and environmental friendliness.

The utility model discloses a flue gas inlet guide plate assembly which comprises a guide plate body, the bottom of the guide plate body is fixedly connected with a flow collecting channel, the outer side of the circumference of the flow collecting channel is fixedly provided with an installation blocking piece, and a plurality of sets of installation holes are evenly formed in the installation blocking piece. The mounting separation blade is screwed on the circumferential side wall of the bottom of the desulfurization tower through a plurality of groups of mounting holes in the mounting separation blade; a dust scraping mechanism is installed on the upper side in the guide plate body, a driving fan is arranged on the dust scraping mechanism, a rotating shaft is fixedly arranged at the top of the driving fan, and a scraping plate is arranged on the circumferential outer wall of the end, away from the driving fan, of the rotating shaft and covers the circumferential outer wall of the guide plate body. According to the flue gas inlet flow guide plate assembly, impurities and scales covering the surface of the flow guide plate body can be scraped off through the scraping plate, the flow guide holes are prevented from being blocked by the impurities and the scales, and it is guaranteed that the flow guide plate body normally conducts flow guide operation for a long time.