47results about How to "Desulfurization achieved" patented technology

The invention discloses a cross flow type two-stage moving bed active coke waste gas integrated purification tower which comprises a purification tower main body, wherein the purification tower main body is provided with an active coke feeding region, a denitration region, a transitional layer, a desulfuration region and a discharging layer sequentially from top to bottom; the denitration region comprises a denitration region active coke bed layer, a denitration region inlet chamber and a denitration region outlet chamber; the desulfuration region comprises a desulfuration region active coke bed layer, a desulfuration region outlet chamber and a desulfuration region inlet chamber; the transitional layer comprises an inlet chimney flue with a waste gas inlet, and a discharge hopper, the inlet chimney flue is arranged above the desulfuration region inlet chamber in a conducting manner, the denitration region active coke bed layer is connected with the desulfuration region active coke bed layer through the discharge hopper, and the desulfuration region outlet chamber is connected with the denitration region inlet chamber in a conducting manner. According to the invention, the pollution purification efficiency is high, the active coke utilization ratio is high, and the circulation volume is small; airflow distribution is uniform and the resistance is small; the flowing of the active coke is unobstructed and uniform, the denitration efficiency is high, and the operation is stable.

The invention relates to a method for desulphurizing gasoline. In the method, a beta molecular sieve serves as a carrier; a selective adsorbent is adopted to adsorb thiophene sulfides in the gasoline and remove the thiophene sulfides from the gasoline; a hydrogen type beta molecular sieve serves as the carrier of the adsorbent; the molecular sieve carries copper, silver, zinc, nickel or gallium metal ions and metal cerium ions; and the exchange amount of the metal ions is 0.001 to 15 percent based on the mass of the hydrogen type beta molecular sieve. The adsorbent is used to selectively adsorb the thiophene sulfides in the gasoline and deeply remove the thiophene sulfides from the gasoline. A result shows that: the bimetallic ions have a synergistic effect, improve the selectivity of adsorptive desulphurization and can reduce the content of the sulfides in the fluid catalytically cracked (FCC) gasoline to below 1mu g/g or zero from 200mu g/g. The reaction condition is mild; the equipment is simple; the activity of the adsorbent is high; and the adsorbent is easy to regenerate. At normal temperature and normal pressure, hydrogen is not consumed and the gasoline is finely desulphurized.

The invention provides a coke oven flue waste gas desulfurization and denitrification and waste heat recovery integrated process. Coke oven flue waste gas is subjected to an SCR reaction under the effect of a low-temperature SCR denitrification catalyst to remove nitric oxides in flue waste gas, a sodium-based dry powder absorbent is sprayed to flue waste gas for desulfurization after waste heat is recovered through a waste heat boiler, and desulfurized flue waste gas is discharged up to standard after dust removal is conducted through a filter. The process is free of waste water, waste gas emission and heating, denitrification can be directly conducted, the absorbent can be recycled, investment is reduced, and energy is saved.

The invention provides an integrated system for coke oven flue gas desulfurization and denitrification and waste heat recovery. The integrated system comprises a coke oven, a low-temperature SCR denitrification system, a waste heat boiler, a flue, a pulverizer, a filtering system and a chimney. The coke oven, the low-temperature SCR denitrification system, the waste heat boiler, the filtering system and the chimney are sequentially connected through the flue, a dry powder absorbent inlet is formed in the portion, between the waste heat boiler and the filtering system, of the flue and is connected with an outlet of the pulverizer through a pipeline, and an absorbent inlet is formed in the pulverizer. The system is free from waste water and gas emission and capable of directly carrying out denitrification without heating, absorbent can be used circularly, investment can be reduced, and energy can be saved.

The invention discloses a dust removing device for flue gas discharged from a boiler. The dust removing device comprises a flue gas inlet pipe, a filter box, a desulfurization tank and a flue gas exhaust pipe, wherein a flue gas outlet at the right side of the flue gas inlet pipe is connected with a waste heat recovery unit; the flue gas outlet end of the waste heat recovery unit is connected witha flue gas inlet at the left end of the filter box through a pipeline; and the lower end of the filter box is provided with an ash collecting hopper connected with the inner cavity of the filter box.According to the invention, a flue gas distribution arranged in a desulfurization mechanism is used for discharging flue gas conveyed by a fan into clarified lime water in uniform and dispersed way through exhaust vents in a plurality of exhaust pipes; a submersible motor and a propeller connected with the output shaft of the submersible motor stir the clarified lime water to allow the clarifiedlime water to flow downward so as to further disperse the flue gas in the clarified lime water sufficiently, thereby greatly improving the reaction efficiency of the clarified lime water with sulfur dioxide in the flue gas, enhancing desulfurization effect, and realizing while achieving further filtration of dust in the flue gas while realizing desulfurization.

The invention provides an integration device based on desulfurization of a triazine solution and an application method of the integration device. The integration device comprises an absorption tower,wherein an air inlet of the absorption tower is connected with an air inlet pipeline; an air outlet of the absorption tower is connected with an exhaust pipeline; a ball valve 1 and an on-line hydrogen sulfide detector are connected in series with the exhaust pipeline; a desulfurizer inlet and a desulfurizer outlet are connected through a circulating pipeline on which a circulating pump is mounted; the desulfurizer inlet is further connected with a fluid infusion pipeline; the fluid infusion pipeline is connected with an inlet of a fluid infusion pump; an outlet of the fluid infusion pump is connected with a desulfurizer storage tank; a drain outlet is connected with a blowdown pipeline; and the on-line hydrogen sulfide detector is electrically connected with the fluid infusion pump for interconnected control. The integration device based on desulfurization of the triazine solution and the application method of the integration device simultaneously realize desulfurization, automatic circulation and fluid infusion, and the whole process is fully automatic and does not need manual intervention.

The invention provides a fire coal flue gas wet method energy-saving desulfurization method, and belongs to the technical field of recycle methods of fire coal flue gas. The method comprises the following steps of: firstly, homogenizing a desulfurizing agent and fire coal, transporting into a hearth for combustion, generating various chemical compounds by SO2 generated by the combustion reaction and elements in furnace burden, and discharging the chemical compounds and the furnace burden which is not completely reacted out from the hearth along with furnace slag; absorbing dust in the flue gas and entering a spray tower, and washing the flue gas by an alkaline wash solution for desulfuration; leading discharged wash solution water body to flow into an oxidation pond, discharging to a slag bath along with discharged materials of the hearth, dissolving water-soluble substances discharged out from the hearth by slag washing water body, hydrolyzing to obtain alkaline liquor, carrying out a reaction between sulfuric acid and hydrochloride solutes in the alkaline liquor to generate ocyhydrate precipitates, and jointly taking away by absorbing of the furnace slag; and leading the reacted alkaline liquor to enter a filter tank, pumping into the spray tower after filtering, and circularly washing the flue gas. A desulfurization system used by the invention is simple, the use level of the fire coal can be saved, sewage does not need to be discharged outwards and secondary pollutants can not be additionally discharged in the whole process, the running cost can be reduced, and the desulfuration and the smoke dust treatment can reach the standard.

The invention relates to a method for gas-phase desulfurization of a glue gas. The method comprises the following steps: directly gasifying an efficient desulfurizer or gasifying the efficient desulfurizer in a heating manner; then injecting the gasified desulfurizer into a desulfurization reaction area; and performing a reaction on the gasified desulfurizer and SO2 in the flue gas in a full mixing manner at a certain temperature so as to reach the purpose of desulfurization. The desulfurization rate of the method reaches more than 95%. The method is less in desulfurizer adding amount, simple to run and operate; the running cost of the method is lower than that of an existing desulfurization method, so that the economic advantage of the method provided by the invention is obvious. As the method is used, the problems of high investment, high running and maintenance cost and complicated running operation of basic facilities adopted by the existing desulfurization technology are overcome. Thus, the method is suitable for the flue gas treatment of various industrial boilers and industrial furnaces.

The invention provides a method for preparing iron disulfide. According to the method, magnetic iron oxide Fe21.333O32 and gas containing H2S are taken as raw materials initiatively and react in the presence of an oxidizing agent, and iron disulfide is prepared. The reaction raw material magnetic iron oxide Fe21.333O32 can be a desulfurizing agent with magnetic iron oxide Fe21.333O32 serving as an active ingredient, the desulfurizing agent is contacted with the gas containing H2S in the presence of the oxidizing agent and performs desulfurization, an obtained material containing iron disulfide can be directly used as a hydrogenation catalyst, the raw material gas is desulfurized, besides, the hydrogenation catalyst is prepared, emission of a waste desulfurizing agent is eliminated, the production cost of iron disulfide is substantially reduced, and the method has great environmental benefits and economic benefits.

The invention relates to an immersion type desulfurization device with mechanical stirring. The desulfurization device comprises an immersion type spray gun and a mechanical stirrer. The immersion type spray gun is inserted into the hollow part of the center of the mechanical stirrer. The immersion type spray gun comprises a spray gun flange connector and a spray gun body that is connected to thespray gun flange connector. The center of the spray gun flange connector is provided with a powder inlet. The center of the spray gun cavity is a hollow cavity. The lower end of the spray gun cavity is provided with a spraying agent outlet. The spray gun flange connector is used to connect a material conveying facility. The mechanical stirrer comprises a stirrer flange connector, a stirring shaft,and a stirring blade. The stirrer flange connector is fixedly connected to the stirring shaft. The lower end of the stirring shaft is fixedly connected to the stirring blade. The stirrer flange connector is used to connect a stirring facility. The provided device can guarantee that in immersion type blowing, materials in a molten pool are fully and evenly stirred and mixed, the powder dispersionand stay time is increased, the dynamic conditions of desulfurization process are greatly optimized, the manufacturing cost of the device is low, and an ideal desulfurization effect is achieved.

The invention discloses a desulphurization and dust-removal device, and a desulphurization and dust-removal method. The desulphurization and dust-removal device comprises a desulphurization tower, and further comprises a vertical type wet-electric type dust remover which is arranged above the desulphurization tower, wherein a desulphurization tower flue gas inlet is formed in the desulphurization tower; the desulphurization tower comprises a housing and a desulphurization device connected with the housing; the desulphurization device comprises a desulphurization magma spraying and circulating system, and a magma tank for accommodating the magma; the magma tank is arranged in the housing and positioned in the lower part of the housing; the desulphurization magma spraying and circulating system comprises a circulating pump which is connected to the magma tank by a pipeline, and four layers of spraying tubes which are connected to the circulating pump; each layer of the spraying tubes comprises at least one spraying tube; the four layers of the spraying tubes are arranged on the upper part of an inner cavity of a housing; a flue gas inlet of the vertical type wet-electric type dust remover is connected to a flue gas outlet of the desulphurization tower; and after being subjected to desulphurization by the desulphurization tower, and dust removal by the vertical type wet-electric type dust remover, the flue gas reaches national environment-friendly emission requirements.

The invention provides a residual oil desulfurization method as well as a preparation method and production equipment of petroleum coke, and relates to the technical field of petroleum coking. The residual oil desulfurization method comprises the following steps: S1) providing residual oil as a reaction raw material, mixing the residual oil and a pretreatment agent and performing pretreatment on the residual oil, wherein the pretreatment agent comprises metal alkali and/or metal carbonate; and S2) putting a pretreatment mixture obtained in the step S1) into an electrostatic field, performing electrostatic desorption and desulfurization treatment and completing desulfurization of the residual oil to obtain the residual oil with low sulfur content. By the residual oil desulfurization method,the technical problems in the prior art that the process difficulty is high, the cost is high and the desulfurization effect is bad when the petroleum coke is desuflurized can be relieved; and desulfurization is conducted from the raw materials, so that the aims of reducing the desulfurization difficulty and improving the desulfurization effect are fulfilled.

The invention provides 316L stainless steel and a preparation method thereof. The preparation method comprises the steps that EAF coarse smelting is conducted on on a mixed material of 316L stainlesssteel; AOD pre-desulfurization is conducted on the mixed material subjected to EAF coarse smelting; AOD refining is conducted on the mixed material subjected to AOD pre-desulfurization; LT slagging-off treatment is conducted on the mixed material subjected to AOD refining; VOD vacuum desulfurization is conducted on the mixed material subjected to LT slagging-off treatment; and continuous casting is conducted on the mixed material subjected to VOD vacuum desulfurization to obtain the 316L stainless steel. The 316L stainless steel prepared through the method can effectively overcome the line scale defect of the edge portion of a cold (hot) rolled plate.

The invention belongs to the technical field of fume purification and discloses a fume produced hydrocarbon fuel synergic desulfurization method and a photocatalysis device for achieving same. According to the method, photocatalytic reduction is implemented on CO2 in fume between an oxygen-enriched combustion power plant electrostatic dust collector and a fume condensation and CO2 compression device, and meanwhile SO2 in the fume is subjected to oxidation desorption. The device comprises a reaction unit and a separation unit, wherein the reaction unit comprises a reaction container; a stirringdevice, a bicarbonate solution and a photocatalyst suspended in the bicarbonate solution are arranged inside the reaction container; a fume inlet, a gas outlet, a liquid outlet and a liquid inlet arerespectively formed in the reaction container; a quartz glass cover plate is arranged at the top end of the reaction container; and the separation unit is a centrifugal extraction device. By virtue of solar energy, oxygen-enriched combustion fume conversion and fume desulfurization are achieved simultaneously, and in addition, the method ahs the advantages of being low in energy consumption, lowin cost, and the like, and has great significances for popularization and application of oxygen-enriched combustion techniques.

The invention provides a recovery process of lead plaster of a waste lead-acid storage battery, which comprises the steps of pulverizing the lead plaster, carrying out desulfurization reaction to obtain desulfurized lead plaster, adding the desulfurized lead plaster into a muffle furnace, introducing water gas, and carrying out reduction reaction to obtain powder of elemental lead generated by reduction, wherein the elemental lead can be reused in the production of lead-acid batteries. The method is simple in process and low in cost, does not corrode equipment or pollute the environment, can obtain high-purity lead without refining by using sodium hydroxide and sodium nitrate refining agents in a refining pot, and has a wide application prospect.

The invention discloses a chemical tail gas deodorization device. The device comprises a high-pressure gas dissolution pump connected with chemical equipment through a pipeline, the high-pressure gas dissolution pump is connected with an airtight water tank through a pipeline, a jet pump is arranged at the output end of the airtight water tank, the output end of the jet pump is connected with a gas-liquid separation chamber, and a gas-liquid separator is arranged in the gas-liquid separation chamber; a liquid storage tank is arranged at the lower end of the separation chamber, and a one-way valve connected with a desulfuration chamber is arranged at the upper end of the gas-liquid separation chamber; an adsorption layer is arranged in the desulfuration chamber and adopts a honeycomb structure, a calcification desulfuration agent is arranged on the surface of the adsorption layer, a gas outlet is formed in the end, away from the one-way valve, of the desulfuration chamber, a steam purifier is arranged at the gas outlet, and the output end of the steam purifier is connected with the gas storage tank through a gas sucking pump. The chemical tail gas deodorization device is simplified, and ammonia and sulfur are separated.

The invention discloses an organic hazardous waste gasification and melting treatment system and method.The gasification and melting treatment system comprises a material matching and feeding system used for matching and conveying materials; the circulating fluidized bed gasification melting system comprises a circulating fluidized bed gasification furnace, a cyclone separator, a return feeder, a melting furnace and a slag dredger which are connected in sequence, the circulating fluidized bed gasification furnace is connected with the spiral feeding machine of the feeding system, and organic hazardous waste is subjected to pyrolysis gasification to obtain pyrolysis gas, carbonized coarse particles and carbonized fine particles; the cyclone separator separates the pyrolysis gas, the carbonized fine particles and the carbonized coarse particles, the carbonized coarse particles are returned to the circulating fluidized bed gasification furnace through the return feeder, and the pyrolysis gas and the carbonized fine particles enter the melting furnace; the melting furnace is used for carrying out oxygen-enriched combustion on the pyrolysis gas and melting the carbonized fine particles at a high temperature, and molten slag forms a glass body in a slag salvaging device; the waste heat boiler is used for recovering sensible heat of flue gas discharged by the melting furnace; and the flue gas purification system is used for purifying flue gas generated after sensible heat is recovered by the waste heat boiler.

The invention relates to the technical field of flue gas desulfurization, and provides a blast furnace gas fine desulfurization device and a fine desulfurization method, a front-end treatment technology is adopted, i.e., desulfurization is carried out before blast furnace gas is sent out of a system, according to the characteristic that the COS content of the blast furnace gas is high, desulfurization can be realized by adopting a COS hydrolysis process, and because the blast furnace gas contains trace toxicants such as HCl, HF and HCN, the content of the toxicants in the blast furnace gas is low, and the content of the toxicants in the blast furnace gas is low. Therefore, a liquid-phase detoxification catalyst and a hydrolysis protective agent which are specially used for removing toxicants in the blast furnace gas are adopted, most toxicants in the blast furnace gas can be removed, the desulfurization efficiency and stability of the system are improved, and the device comprises a bag-type dust collector and a heat recovery system for recovering the blast furnace gas, the heat recovery system is communicated with the bag-type dust collector through a three-way front pipe, the three-way front pipe is communicated with a liquid-phase detoxification catalyst supplementing device, a delivery pump is arranged between the liquid-phase detoxification catalyst supplementing device and the three-way front pipe, and a liquid-phase detoxification catalyst is arranged in the liquid-phase detoxification catalyst supplementing device.

The invention relates to a target anchorage agent for sulfide in oil and a preparation method and application thereof. The preparation method of the target anchorage agent for sulfide comprises the following steps of loading precursor-metal ion of the anchorage agent for the sulfide on the surface of magnetic nanoparticle coated by a silicon dioxide shell layer through an impregnating method, obtaining a stable magnetic nanoparticle-metal nanocluster complex structure through roasting and preparing to obtain the target anchorage agent for the sulfide. The magnetic nanoparticle is utilized as a target agent, metal nanocluster is utilized as an anchorage agent for the sulfide, and a magnetic nanoparticle-metal nanocluster complex structure is constructed. The target anchorage agent not only avoids reducing oil octane value, but also reduces energy consumption; thus, clean low-sulfur oil can be obtained, vehicle emission level can be reduced, environmental air quality is improved, and the target anchorage agent has a very good application prospect.

The invention discloses a biogas in-situ desulfurization biological agent. The biogas in-situ desulfurization biological agent comprises a desulfurizer, a microbial preparation, and an adjuvant; the desulfurizer is prepared from ferric salt consisting one or more selecting from normal salt, acid salt and basic salt; the microbial preparation is mixed strains of various microorganisms, and consistsof bacillus licheniformis, pseudomonas delbrueckii R-8, bacillus subtilis and microzyme; and the adjuvant is prepared by mixing agar, starch, reduced sugar, turfy soil and the like. According to thebiogas in-situ desulfurization biological agent, the desulfurizer and the microbial preparation are mixed for use, so that dry and wet desulfurization is achieved through the desulfurizer while further desulfurization is achieved through the microbial preparation; and thus, rapid desulfurization can be achieved through the two modes. In addition, the desulfurizer contains multiple sets of ferric salt so that the desulfurizer can adapt to environments in biogas digesters of different forms; and thus, desulfurization can be achieved.

The invention discloses a dry quenching furnace system with a tail gas desulfurizing function and a desulfurizing method thereof. The dry quenching furnace system is characterized in that a spraying pipe is distributed in the circumferential direction of a top cone of a dry-quenching furnace; a powdery desulfurizing agent is sprayed into the furnace body through a pneumatic conveying device; the powdery desulfurizing agent reacts with SO2 in recycle gas inside the furnace in a falling process to generate sulfate particles; a part of the sulfate particles fall into a coke layer and is conveyedinto a blast furnace along with coke to participate in smelting, and the other part of the sulfate particles enter a deduster along with the recycle gas for dedusting and filtering; residual filteredrecycle gas is discharged by a gas exhaust device. Thus, SO2 in exhaust tail gas is effectively removed, so that the SO2 emission value can reach 80 mg/m<3> or below. In the system, a desulfurizing reactor and dedusting equipment do not need to be added, and tail gas desulfurization can be realized in the dry-quenching furnace, so that the production cost is effectively lowered, and the influenceon the space of the field equipment is lowered.