1144 results about "Acid gas" patented technology

A process system and process method for treating hydrogen sulfide-containing acid gas. The process system comprises a sulfur recovery unit, a tail gas treatment unit having an acid gas concentration function, and a flue gas alkaline scrubbing unit. The method comprises: subjecting sulfur-containing tail gas to concentration treatment by means of an absorption column (1) of the tail gas treatment unit, and then introducing same into the sulfur recovery unit to undergo a Claus reaction for separation, so as to obtain sulfur and sulfur recovery tail gas; introducing the sulfur recovery tail gas into the tail gas treatment unit, successively carrying out combustion and hydrotreating, and introducing the obtained gas into the absorption column (1) of the tail gas treatment unit; and in the tail gas treatment unit, introducing gas absorbed by the absorption column (1) into the flue gas alkaline scrubbing unit, and successively carrying out incineration and alkaline scrubbing, so as to discharge desulfurized gas. The content of SO2 in the tail gas treated by the process system is ≤50 mg / Nm3, and the requirements for full-period standard reaching of sulfur dioxide emission of tail gas during startup, shutdown and normal operations can be satisfied.

An improved method and apparatus for removing acid gases and other impurities from raw biogas streams, such as biogas from landfills or biogas from controlled anaerobic digestion, is disclosed. The method provides efficient generation of high-purity renewable natural gas from raw biogas. The biogas is treated in a multi-stage membrane system integrated with compression equipment. The membrane separation units are arranged into interconnected high-pressure and low-pressure gas recycling loops powered by high-pressure and low-pressure compressors. The multi-stage membrane system can be integrated with deoxygenation and auxiliary nitrogen removal systems. The combined system provides for the generation of efficient contaminant removal from raw biogas to generate high-purity methane products with reduced compression energy consumption.

The invention belongs to the field of environment-friendly gas purification and energy conservation, and discloses a desulfurization and decarbonization method and system. The desulfurization and decarbonization system comprises a flue gas absorption system and an amine liquid regeneration system, the flue gas regeneration system comprises an absorption tower, a high-temperature rich and lean liquid heat exchanger, a low-temperature rich and lean liquid heat exchanger and a heat pump system; the amine liquid regeneration system comprises a regeneration tower, a thermal coupling reboiler, a high-pressure reflux tank, a reboiler, a low-pressure flash tank, a barren liquor low-temperature cooler and a steam flash tank. The desulfurization and decarbonization method comprises the following steps: in an absorption tower, performing countercurrent contact on amine liquid and raw material gas, and absorbing acid gas in the raw material gas to generate an amino salt compound, so as to obtain amine-rich liquid; the amine-rich liquid enters a regeneration low-pressure tower and a regeneration high-pressure tower, the amino salt compound is regenerated to release acid gas to generate amine liquid, and the amine liquid returns to the absorption tower. By utilizing a high-low pressure regenerative thermal coupling technology and a heat pump technology, the energy consumption of the system is effectively reduced, the overall absorption efficiency is improved, and the equipment investment and site arrangement are saved.

The invention relates to the technical field of CO2 capture and separation, and particularly discloses an anhydrous absorbent with a self-extraction function as well as application and a recovery method. The anhydrous absorbent is synergistically composed of a mixed amine absorption enhancer with specific composition and a hydrophobic organic solvent, wherein the mixed amine absorption enhancer comprises primary amine, secondary amine and tertiary amine. The mixed amine absorption accelerant combines the advantages of high reaction activity of primary amine, low regeneration heat of secondary amine and high absorption capacity and strong hydrophobicity of tertiary amine, so that the anhydrous absorbent shows excellent self-extraction capacity in the adsorption and desorption processes of acid gas, particularly, the anhydrous absorbent after absorbing the acid gas forms a less-water CO2 rich phase, and the CO2 rich phase has excellent self-extraction capacity. And due to the characteristic of less water, sensible heat and latent heat of vaporization required by a rich phase in a CO2 desorption stage are remarkably reduced, so that the problem that the energy consumption is too high in the regeneration process of the existing water-based absorbent is effectively solved.

An improved method and apparatus for removing acid gases and other impurities from raw biogas streams, such as biogas from landfills or biogas from controlled anaerobic digestion, is disclosed. The method provides efficient generation of high-purity renewable natural gas from raw biogas. The biogas is treated in a multi-stage membrane system integrated with compression equipment. The membrane separation stages are integrated with high-pressure and low-pressure compressors with the low-pressure compressor operating in a defined pressure range. The combined system provides for efficient contaminant removal from raw biogas to generate high-purity methane products with reduced membrane area and compression energy consumption.

An improved process for removing acid gases from raw biogas streams, such as biogas from landfills or biogas from controlled anaerobic digestion, provides for efficient H2S removal combined with carbon dioxide removal. The biogas is treated in a biological hydrogen sulfide removal system integrated with a membrane gas separation system. The combined system provides for efficient acid gas removal while simultaneously limiting oxygen carryover into the treated product stream by beneficially utilizing oxygen in the biological desulfurization system.

The invention relates to the technical field of adsorbents, and discloses a moisture-resistant carbon dioxide trapping adsorbent, and a preparation method thereof comprises the following steps: S1, blending oxalic acid or oxalate or squaric acid and a zinc source in a reaction system to obtain a mixture I; s2, dissolving an organic ligand in a solvent to obtain a mixture II; s3, the mixture I and the mixture II are subjected to a reaction and post-treatment, and the adsorbent is obtained. According to the prepared adsorbent, a pore structure is formed in situ in the preparation process, the specific surface area is large, the porosity is large, the structure can be kept stable in the presence of water and steam, and the adsorbent is stable to wet acid gas.

The invention relates to the technical field of industrial waste gas treatment, and discloses an acid gas treatment device and method for synthesis ammonia production, the acid gas treatment device for synthesis ammonia production comprises an absorption tower, a spraying system and a filler layer, the spraying system and the filler layer are installed in the absorption tower, and a receiving disc is arranged below the filler layer; the receiving disc comprises a plurality of annular plates which are vertically and coaxially distributed, the diameters of the annular plates are gradually reduced from top to bottom, the bottom of the annular plate on the lowermost side is fixedly connected with a drainage ring, the outer wall of the lower portion of the drainage ring is sleeved with a collecting cylinder, the inner wall of the drainage ring is fixedly connected with a flow slowing cylinder, and the lower portion of the flow slowing cylinder extends into the collecting cylinder. The solvent flows on the annular plate, and after the flow speed of the solvent is slowed down through the flow slowing cylinder, the solvent and impurities form a falling speed difference in the collecting cylinder, so that the impurities can effectively precipitate at the bottom in the collecting cylinder and are prevented from flowing to a filtering system of the recycling box along with the solvent, the burden of the filtering system is relieved, and the recycling efficiency of the solvent is improved.

The invention belongs to the technical field of sulfur recovery, and particularly relates to a treatment method and a treatment device for ultralow-concentration acid gas, which are applicable to treatment of acid gas with H2S less than 1% in industries such as coal chemical industry and the like. According to the treatment method of the ultralow-concentration acid gas, the ultralow-concentration acid gas and the Claus hydrogenation tail gas are mixed and then introduced into the quench tower to be treated, on one hand, the temperature of the hydrogenation tail gas can be reduced, on the other hand, the effect of injecting ammonia into quench water can be achieved, sulfur resources are fully recycled, and meanwhile the energy consumption is reduced. And dual treatment of H2S and NH3 in the ultralow-concentration acid gas is realized.

The utility model provides a hydrogenation reaction system for producing sulfur by reducing acid gas regenerated by activated carbon, which comprises an acid gas pretreatment system, a first-stage hydrogenation system, a second-stage hydrogenation system, a tail gas treatment system and a liquid sulfur tank, the acid gas generated by regeneration of desulfurized activated carbon is pretreated and then is subjected to hydrogenation reduction to produce sulfur, the hydrogenation is divided into two stages, wherein the primary hydrogenation is divided into a plurality of sections according to different SO2 contents, a sectional hydrogenation method is adopted, gas subjected to the primary hydrogenation enters the secondary hydrogenation, air is introduced into the gas subjected to the secondary hydrogenation, and after side reaction products generated by hydrogenation are oxidized into sulfur and SO2, residual tail gas is sent back to an inlet of the activated carbon desulfurization device. Through first-stage hydrogenation and second-stage hydrogenation, the temperature rise of the hydrogenation reaction is reduced, side reactions are reduced, and the SO2 conversion rate is improved; oxidation-method tail gas treatment is adopted to directly return to activated carbon for desulfurization, and no waste gas is discharged on the whole.

The invention relates to the technical field of waste heat recovery, and particularly discloses an efficient waste heat recovery system based on secondary lead smelting and a cascade using method thereof.The efficient waste heat recovery system comprises a smelting furnace, an air preheater, a cyclone dust collector, a box type dust collector, a waste heat boiler and a raw material drying machine which are sequentially connected; a vertical cylinder with the lower end extending out is concentrically fixed to the top of the heat preservation outer shell, a heat exchange rotor is rotationally arranged at the upper end of the vertical cylinder, the interior of the heat exchange rotor is evenly divided into a plurality of sealed fan-shaped spaces, the fan-shaped spaces are filled with phase change heat storage materials, and a plurality of sets of vertical tubes are arranged in each fan-shaped space. A plurality of groups of radial through heat exchange tubes are arranged in each fan-shaped space; according to the waste heat efficient recovery system and the waste heat cascade using method, on the premise that high-temperature flue gas waste heat is efficiently utilized, corrosion of high-temperature strong acid gas to the heat exchange pipes and the heat exchange media can be avoided, and the service life of the air preheater is guaranteed.

An improved method and apparatus for removing acid gases and other impurities from raw biogas streams, such as biogas from landfills or biogas from controlled anaerobic digestion, is disclosed. The method provides efficient generation of high-purity renewable natural gas from raw biogas. The biogas is treated in a multi-stage membrane system integrated with compression equipment. The membrane separation units are arranged into interconnected high-pressure and low-pressure gas recycling loops powered by high-pressure and low-pressure compressors. The multi-stage membrane system can be integrated with deoxygenation and auxiliary nitrogen removal systems. The combined system provides for the generation of efficient contaminant removal from raw biogas to generate high-purity methane products with reduced compression energy consumption.

The invention discloses a control method, device and equipment of a semi-dry method deacidification system and a medium, and relates to the technical field of household garbage incineration power generation treatment. Determining a prediction error value and inputting the prediction error value into a feedforward controller of the first PID controller; the feed-forward controller determines a lime slurry flow feed-forward compensation value according to the prediction error value; based on the lime slurry flow feedforward compensation value, a lime slurry flow error compensation value output by a main controller of the first PID controller and the actually measured lime slurry flow serving as a disturbance compensation value, a first control instruction used for controlling the opening degree of a lime slurry adjusting valve is output through an auxiliary controller of the first PID controller. The method is suitable for a control scene of a semi-dry deacidification process.

The invention discloses a treatment system and method for waste incineration fly ash washing liquid cooperating with flue gas purification, and the system comprises a semi-dry desulfurization tower, a dust remover, an ash silo, a washing tank, a buffer tank, a water supply preheater and a wet washing tower which are connected with a main flue of an incineration plant, the method comprises the following steps: transferring waste incineration fly ash collected in the system into the water washing tank, and adding water for washing to obtain water washing liquid and desalted fly ash; the method comprises the following steps: spraying fly ash water washing liquid by using a wet washing tower, recovering tail flue gas waste heat, deeply removing residual acid gas in flue gas, concentrating and reducing the water washing liquid, and controlling the spraying amount to adjust the concentration ratio so as to realize the separation and solid-liquid separation of chlorine salt; introducing the concentrated water washing liquid into a semi-dry desulfurization tower, atomizing the water washing liquid into fine liquid drops by using a rotary atomizer, contacting the fine liquid drops with hot flue gas, evaporating the fine liquid drops to dryness, and absorbing acid gas in the flue gas at the same time, thereby realizing zero emission of the water washing liquid and cooperating with flue gas purification. According to the invention, the problem of high energy consumption of fly ash washing liquid treatment is solved, and the resource utilization rate of the washing liquid is improved.

The invention discloses multistage spraying-adsorption deep purification equipment for naphthalene sulfonic acid production tail gas, and belongs to the technical field of industrial waste gas treatment. The multistage spraying-adsorption deep purification equipment for the naphthalene sulfonic acid production tail gas comprises a spraying tower, a cyclone separator and an adsorption box which are sequentially connected, the spraying tower is sequentially provided with a conical liquid collecting tank, a dispersion plate, a filler layer and an alkali liquor spraying pipe from bottom to top, and one side of the spraying tower is provided with a tail gas inlet pipe inserted into the lower portion of the dispersion plate. According to the multi-stage spraying-adsorption deep purification equipment for the naphthalene sulfonic acid production tail gas, the multi-stage spraying, cyclone separation and adsorption technologies are combined, SO2, acid gas and organic pollutants in the naphthalene sulfonic acid production tail gas are efficiently removed, the emission of harmful substances is reduced by adopting an efficient waste gas treatment method, and the environmental pollution is reduced. Meanwhile, waste water is recycled through the waste liquid collecting pool, and the activated carbon layer subjected to silanization treatment has good hydrophobicity.

Flue gas is compressed to high pressures, which raises the partial pressure of carbon dioxide thus facilitating its absorption into physical solvents (e.g., water, salt solutions, methanol). When added onto an existing CO2-producing process, the compression is performed using multiple stages with intercooling. After the high-pressure carbon dioxide dissolves into the physical solvent, it flows through a series of pressure letdowns using turbines that allow the dissolved carbon dioxide to evolve from the solvent. Through a series of multiple compression stages, the evolved gas is compressed for transport, utilization, or storage. The flue gas that has been scrubbed of carbon dioxide flows through a series of expanders with interheating supplied from waste heat, or the heat of compression. The process is enhanced by employing alkalis that chemically react with acid gases, such as carbon dioxide. These same CO2-capture processes can be integrated into processes that produce shaft and / or electrical power.

The invention belongs to the technical field of sulfur recovery, and particularly relates to a treatment process and a treatment device for ultralow-concentration acid gas, which are applicable to treatment of acid gas with H2S less than 1% in industries such as coal chemical industry and the like. According to the treatment process of the ultralow-concentration acid gas, the ultralow-concentration acid gas and Claus hydrogenation tail gas are mixed, then introduced into the steam generator for cooling and further introduced into the quench tower for treatment, so that on one hand, the temperature of the hydrogenation tail gas can be reduced, and on the other hand, the effect of injecting ammonia into quenched water can be achieved; while sulfur resources are fully recovered, dual treatment of H2S and NH3 in the ultralow-concentration acid gas is realized.

The invention provides an ozone flue gas denitration device and a denitration method thereof, and belongs to the technical field of flue gas denitration. The ozone flue gas denitration device comprises a denitration tank, a gas inlet pipe and an exhaust pipe, the gas inlet pipe and the exhaust pipe are installed on the side wall of the denitration tank, a pretreatment mechanism is installed in the denitration tank, and the pretreatment mechanism comprises a spray pipe, a filter plate and a rotating seat. By arranging the pretreatment mechanism, an alkaline solution can be injected into a spray pipe through a water pump and is sprayed into flue gas through a spray head, particle impurities in the flue gas are removed, acid gas such as sulfur dioxide in the flue gas can be effectively removed, the flue gas is humidified, favorable conditions are provided for a subsequent ozone reaction, and in the spraying process, the treatment efficiency is improved. The temperature of the flue gas is reduced while the humidity is increased, so that the reaction efficiency of ozone is improved, then a rotating seat and a scraper blade are driven by a first rotating shaft to rotate, and under the action of centrifugal force, particle impurities attached to the surface of a filter plate are thrown into a collecting bin to be collected, so that the device is convenient to use.

The invention discloses a catalytic carbonized flame-retardant polyolefin nano composite material as well as a preparation process and application thereof, and relates to the technical field of macromolecular flame-retardant materials. The composite material comprises the following components: a polyolefin matrix, a metal organic framework, aluminum hypophosphite, transition metal nickel, and mercaptan and alkene monomers used for a dynamic mercaptan-alkene click reaction. According to the present invention, the three-time combination flame retardation effect of physical barrier-chemical quenching-pyrolysis gas dilution is achieved, when the fire occurs, the staged catalysis mechanism can accurately respond to different temperature stages, and the nickel ions trigger the polyolefin pre-crosslinking at the temperature of 200-250 DEG C to form the three-dimensional network so as to construct the physical barrier so as to achieve the fire retardation effect; aluminum hypophosphite at the temperature of 300 DEG C or above is pyrolyzed to release acid gas to etch the shell of the MOFs and release the free radical trapping agent, chemical quenching and pyrolysis gas dilution are carried out, and the good mechanical property of the polyolefin material is kept.

The preparation method comprises the following steps: shredding a light fibrous plant raw material which is difficult to process to 1-5mm, adding a certain amount of lignin, fully mixing with diammonium hydrogen phosphate or ammonium dihydrogen phosphate, carrying out hot press molding at 130-190 DEG C by using a pelletizer to prepare heavy particles with the particle size of 8-10mm, and carrying out high-temperature sintering to obtain the columnar activated carbon for desulfurization and denitrification of the fibrous plant raw material, thereby obtaining the columnar activated carbon for desulfurization and denitrification of the fibrous plant raw material and the columnar activated carbon for desulfurization and denitrification of the fibrous plant raw material. Heating the heavy particles to 400-700 DEG C in a rotary furnace, carbonizing for 1-3 hours, introducing a mixed gas of water vapor and air, and carrying out segmented activation at 850-950 DEG C-1000 DEG C to prepare high-quality activated carbon with the iodine value of more than or equal to 950 mg / g; crushing activated carbon to 140-325 meshes, mixing the crushed activated carbon with the composite glue solution, adding a proper amount of water for kneading, and forming the mixture into 2-8mm columnar particles by a hydraulic granulator or a screw extrusion granulator; through drying at the temperature of 100-300 DEG C and heat treatment at the temperature of 700-900 DEG C in a nitrogen, water vapor or anaerobic atmosphere, a basic group generated by the binder in the heat treatment has a very strong chemical adsorption effect on acid gas, later-stage modification is not needed, and excellent desulfurization and denitrification performance is achieved.

The invention discloses an acidic water deoiling treatment process and device in the field of petrochemical engineering. The device comprises an acidic water pressure pump, an acidic water preheater, an acidic water dealkylation tower, a condenser and a liquid separation tank, the device is characterized in that the acidic water pressure pump, the acidic water preheater and the acidic water dealkylation tower are sequentially connected through acidic water pipelines, and the acidic water dealkylation tower is sequentially connected with the condenser and the liquid separation tank through the tower top. The method can improve the purity of the by-product acidic gas in the purification section of the downstream acidic water stripping device and reduce the hydrocarbon content in the acidic gas; meanwhile, most oil-gas resources are recovered.

The invention discloses a multipurpose comprehensive utilization system for flue gas of a garbage incinerator, and relates to the technical field of solid waste treatment and resource recovery. After steam generated by a waste heat boiler drives a generator set, medium-temperature and low-temperature flue gas is sequentially guided into a sludge drying system for heat energy coupling utilization; in the purification section, a synergistic removal process is adopted, and trapped pollutants are converted into ammonium sulfate fertilizer raw materials while acid gas and dioxin are efficiently removed; finally, the fly ash rich in heavy metal is guided into a melting system, and inert building material aggregate is formed through high-temperature vitrification. According to the integrated system, the limitation of traditional quality-divided treatment is broken through, the three targets of deep recovery of flue gas waste heat, collaborative resource conversion of pollutants and safe treatment of fly ash are achieved, the operation cost is greatly reduced, additional economic values are created, and a win-win comprehensive solution of environmental benefits and economic benefits is provided for a waste incineration plant.

The invention relates to the technical field of cable combustion test equipment, in particular to a cable combustion test integrated flue gas purification treatment system and method.The cable combustion test integrated flue gas purification treatment system comprises a shell, a purification cavity used for treating flue gas is formed in the shell, and a flue gas inlet and a flue gas outlet which are communicated with the purification cavity are formed in the outer portion of the shell; the washing liquid supplying and spraying device is used for continuously supplying and spraying washing liquid into the purification chamber according to a preset spraying path; and the gas-liquid contact retention device is arranged in the purification chamber, is positioned at the downstream of the spraying path and is used for intercepting and gathering the washing liquid. According to the invention, the gas-liquid contact retention device is arranged to intercept and gather the washing liquid to form a dynamic liquid seal, so that flue gas is forced to pass through the retention area, the gas-liquid reaction time is greatly prolonged, and efficient and deep purification of acid gas and soluble pollutants is realized; and finally, the remarkable technical effects of improving the purification efficiency and ensuring that the discharged gas is environmentally friendly and reaches the standard are achieved.

The invention relates to the technical field of low-temperature methanol washing, in particular to an energy-saving low-temperature methanol washing process which comprises the steps of acid gas removal of raw material gas in an absorption tower, desorption and regeneration of a rich solution after the acid gas is absorbed, and cyclic utilization of a methanol solution. Through functional differentiation of a sulfur-containing semi-barren solution and a sulfur-free semi-barren solution, the circulation amount of lean methanol is reduced compared with that of a traditional process, the load and steam consumption of a thermal regeneration tower are directly reduced, the sulfur-containing semi-barren solution selectively absorbs H2S in a desulfurization section, 50-60% of CO2 is removed, the load of a decarburization section is reduced, the total number of tower plates of an absorption tower is reduced, and the equipment investment is reduced; the desulfurization section is divided into two or three sections and is provided with a cooler, the temperature of each section is strictly controlled to be-50 DEG C to-60 DEG C, efficiency reduction caused by heat absorption and release is avoided, and the decarburization section adopts barren liquor and sulfur-free semi-barren liquor combined absorption, so that the concentration of CO2 in purified gas is stabilized below 20ppm, and the requirements of high-end processes such as synthesis ammonia and coal hydrogen production on gas purity are met.

The invention relates to the technical field of organic solid waste treatment, in particular to a process system for hydrogen production and co-production of biological natural gas from biological crude synthesis gas, which comprises a purification unit, a hydrocarbon regulation unit, an acid removal unit, a methane upgrading unit, a hydrogen recycling and purifying unit and a methane recycling and purifying unit which are connected in sequence. The purification unit is used for removing impurities through pre-impurity removal, compression, dry-process impurity removal and wet-process desulfurization to produce purified synthesis gas and sulfur; the hydrocarbon adjusting unit is pressurized through a centrifugal compressor and adjusts the hydrogen-carbon ratio; the acid removal unit is used for removing acid gas and organic sulfur; the methane upgrading unit is used for converting CO / CO2 into methane through methanation reaction; and the recycling unit purifies hydrogen through pressure swing adsorption and recycles methane by using a membrane separation technology to produce biogas. The problems of low purity and insufficient raw material utilization rate of the traditional process are solved through the circulation process, the co-production of high-purity hydrogen and biogas is realized, and the additional value of resources is improved.

An improved method and apparatus for removing acid gases and other impurities from raw biogas streams, such as biogas from landfills or biogas from controlled anaerobic digestion, is disclosed. The method provides efficient generation of high-purity renewable natural gas from raw biogas. The biogas is treated in a multi-stage membrane system integrated with compression equipment. The membrane separation units are arranged into interconnected high-pressure and low-pressure gas recycling loops powered by high-pressure and low-pressure compressors. The combined system provides for the generation of efficient contaminant removal from raw biogas to generate high-purity methane products with reduced compression energy consumption.

The invention discloses a method for preparing a ternary positive electrode composite material. The method comprises the following steps: sintering a ternary positive electrode material precursor and a lithium source in an oxygen atmosphere to obtain a ternary positive electrode material; and introducing mixed gas of acid gas and oxygen into the ternary positive electrode material under the condition that the temperature does not exceed 900 DEG C to obtain the ternary positive electrode composite material. By adopting the technical scheme, on one hand, overgrowth or abnormal growth of crystal grains caused by overhigh temperature can be prevented; on the other hand, the residual alkali on the surface is effectively removed and is converted into inorganic salt with more stable thermodynamics, and the surface of the ternary positive electrode material is coated with the inorganic salt layer, so that the interface stability and the cycling stability of the material can be remarkably improved, and the resource utilization of wastes is also realized. The invention also discloses the ternary positive electrode composite material. The ternary positive electrode composite material is prepared by adopting the preparation method. The invention also discloses a lithium battery and a ternary positive electrode composite material.

The application discloses a kind of iron-based ionic liquid oxidation desulfurization method, hydrogen sulfide gas is introduced into desulfurizer and is desulfurized.Therein, the desulfurizer used includes iron-based ionic liquid, cosolvent and acid control agent, acid control agent is preferably alcohol amine, the use of alcohol amine not only greatly improves the sulfur capacity of desulfurizer, can reach 41.14g / L, simultaneously with H + There is stronger binding capacity, resulting in the initial reaction of homogeneous desulfurizer phase separation, the alcohol amine phase formed by phase separation forms liquid seal relative to iron-based ionic liquid phase, binds the escape of acidic gas in desulfurization liquid, avoids the destruction of desulfurizer structure, the corrosion of equipment caused by strong acidic system and the environmental pollution caused by acidic gas escape, realizes 100% desulfurization.In addition, the desulfurizer described in the application has high thermal stability and chemical stability.

A system and method for producing methanol and synthetic fuels from waste acid gas streams using a plasma reactor is described in this disclosure. An acid gas stream comprising primarily of H2S and CO2 is fed into a plasma reactor. H2S is converted into H2 and sulfur. Simultaneously, CO is formed by the reverse water gas shift reaction. H2 and CO form a syngas stream. The unreacted H2S is captured in a tail gas treatment unit and recycled back to the plasma reactor. A partial CO2 capture unit is placed downstream of the tail gas treatment unit which is primarily used to adjust the ratio of H2 and CO in the syngas stream to 2-3 for methanol production and 2 for fuel production.

The invention provides a flue gas dust removal and denitration process, and belongs to the technical field of flue gas treatment.The denitration process comprises the following steps that flue gas to be treated is introduced into a pretreatment zone, large-particle dust and part of acid gas in the flue gas are removed, the treated flue gas is introduced into a catalytic reaction zone, and under the action of a corrugated plate catalyst, the flue gas is subjected to denitration treatment; spraying a reducing agent into the flue gas; introducing the flue gas subjected to the catalytic reaction into a deep purification area, and adsorbing and purifying residual fine dust by adopting an adsorbent; and then the treated flue gas reaching the standard is discharged. Through process integration and material innovation, the problems of low dust removal and denitration efficiency, easy catalyst deactivation, high operation cost and the like in the traditional technology are solved, and the method has the advantages of high purification efficiency, low energy consumption, wide application range and the like.