2003results about "Catalyst regeneration/reactivation" patented technology

A lipid feedstock including fatty acid(s) is treated in a process flow through a moving bed reactor with catalyst to produce a treated stream. The catalyst may include metal oxide catalyst on a particulate oxide support. The catalyst may be transferred, using a catalyst withdrawal line, from the bottom of the moving bed reactor to a fluidized bed regenerator, and regenerated. The catalyst may be transferred from the fluidized bed regenerator to a cyclone that separates the catalyst from flue gas. The catalyst may be transferred from the cyclone to the top of the moving bed reactor using a catalyst feed line. A first separation gas may be flowed into the catalyst feedline, and a second separation gas may be flowed into the bottom of the moving bed reactor or into the catalyst withdrawal line, to generate pressure differentials driving the process flow through the moving bed reactor.

A reactor system includes a reactor that treats a lipid feedstock using a metal oxide catalyst to produce a treated stream comprising a bio-oil. The reactor system includes a catalyst zone in which the metal oxide catalyst reacts with the lipid feedstock to produce the treated stream. The reactor system operates in a reaction mode, during which the lipid feedstock flows in a downward direction through the metal oxide catalyst to produce the treated stream. Alternately, the reactor also operates in a regeneration mode, during which coke is burned from the metal oxide catalyst thereby regenerating the metal oxide catalyst. In one aspect, a regeneration mode pressure is less than a reaction mode pressure within the reactor to fluidize the catalyst.

A process for upgrading plastic derived oil includes contacting the plastic derived oil with a mixed catalyst in a first reactor, where the mixed catalyst includes a decontamination catalyst and a cracking catalyst different from the decontamination catalyst. The first reactor reduces concentrations of halogen-containing compounds in the plastic derived oil. The process includes passing the first reactor effluent to a second reactor and contacting the first reactor effluent with the cracking catalyst to produce a second effluent comprising light olefins and naphtha range hydrocarbons. The process includes separating used mixed catalyst from the first reactor to produce a used decontamination catalyst and a second used cracking catalyst, and regenerating the decontamination catalyst and cracking catalyst in separate regenerators to reduce exposure of the cracking catalyst to halogen-containing compounds produced during regeneration of the used decontamination catalyst.

A process for upgrading plastic derived oil includes contacting a plastic derived oil stream with a decontamination catalyst in a first reactor, separating a first reactor effluent from a used decontamination catalyst, passing the first reactor effluent to a second reactor downstream of the first reactor, contacting the first reactor effluent with a cracking catalyst in the second reactor, and separating a second reactor effluent from a used cracking catalyst. The cracking catalyst is different from the decontamination catalyst. The process further includes regenerating the used decontamination catalyst in a decontamination catalyst regenerator to produce regenerated decontamination catalyst, and regenerating the used cracking catalyst in a cracking catalyst regenerator separate from the decontamination catalyst regenerator to produce regenerated cracking catalyst. Regenerating the used cracking catalyst separately reduces deactivation of the cracking catalyst by halogen-containing compounds produced during regeneration of the decontamination catalyst.

The invention belongs to the technical field of pyridone ethanolamine salt synthesis, and discloses an environment-friendly pyridone ethanolamine salt preparation process which comprises the following preparation steps: enabling isononanoyl chloride and 3, 3-methyl dimethacrylate to react under the catalysis of a solid acid catalyst to prepare 3, 7, 9, 9-tetramethyl-2-decene-5-keto acid methyl ester, and enabling the 3, 7, 9, 9-tetramethyl-2-decene-5-keto acid methyl ester to react under the catalysis of a solid acid catalyst to prepare 3, 7, 9, 9-tetramethyl-2-decene-5-keto acid methyl ester. The preparation method of the solid acid catalyst comprises the following steps: S1, taking water as a solvent, adding 14-16 parts by weight of zirconium oxychloride, 1-3 parts by weight of titanium sulfate, 0.1-0.5 part by weight of chloroplatinic acid and 0.05-0.4 part by weight of cerium chloride, adjusting the pH value to 10-11, and aging to obtain a precipitate; s2, roasting the precipitate obtained in the step S1 in an air atmosphere at 500-600 DEG C to obtain a solid acid catalyst; the method has the advantages that the catalyst is easy to recycle, and the reusability is high.

The invention discloses a method for realizing carbon dioxide emission reduction in a catalyst regeneration process, regenerated flue gas is subjected to dust removal and pressure reduction to obtain low-pressure flue gas, the low-pressure flue gas is divided into a first flue gas material flow and a second flue gas material flow, the first flue gas material flow is subjected to heat exchange, denitration and desulfurization dust removal treatment to obtain desulfurized flue gas, and the desulfurized flue gas is subjected to heat exchange, denitration and desulfurization dust removal treatment to obtain a second flue gas material flow; water vapor in the desulfurized flue gas is removed to obtain low-humidity flue gas, part of the low-humidity flue gas serves as circulating flue gas to participate in catalyst regeneration, part of the low-humidity flue gas and hydrogen are subjected to a combustion reaction, deoxidized flue gas is obtained, and high-concentration carbon dioxide is obtained after the deoxidized flue gas is dehydrated; the second flue gas material flow is subjected to heat exchange with the circulating flue gas or is returned together with the circulating flue gas to participate in catalyst regeneration or is mixed with the first flue gas material flow in the denitration process, and heat exchange, desulfurization and dust removal are continued to obtain desulfurized flue gas. The method solves the problems of large total carbon dioxide emission, low carbon dioxide concentration and high trapping cost of a hydrocarbon processing device in the prior art.

A method includes combusting a fuel stream in a combustion unit in the presence of a first oxygen enriched carbon dioxide stream received from an anode of an electrolyzer to generate a hot flue gas stream comprising carbon dioxide, steam, unconsumed oxygen, NOx and SOx, cooling the hot flue gas stream in a heat exchanger by supplying a water stream to the heat exchanger as a heat transfer medium to generate a cooled flue gas stream effluent, processing the cooled flue gas stream effluent in one or more separation units to generate a carbon dioxide rich gas stream and a carbon dioxide lean gas stream, and passing the carbon dioxide rich gas stream to the anode of the electrolyzer to generate a second oxygen enriched carbon dioxide stream for sending to the combustion unit.

The invention belongs to the field of catalyst regeneration, and provides a regeneration method of a platinum-based low-carbon alkane dehydrogenation catalyst, which specifically comprises the following steps of: simultaneously carrying out charking and oxychlorination operations before a deactivated catalyst reaches the highest roasting temperature, and adding agent pouring treatment in the regeneration process, and measures for protecting the dispersity of platinum on the catalyst are added in the reaction heating process of the catalyst and after the application is finished, so that the service life of the catalyst is prolonged. According to the regeneration method, the regeneration step of the deactivated catalyst is simplified, chlorine injection, water injection, vulcanization and other operations are not needed, charking, oxychlorination and different reduction depths caused by different positions of the catalyst are avoided, the performance uniformity of the catalyst and the redispersity of platinum are improved, and the regeneration efficiency is improved. The problems that in an existing regeneration method, the dispersity of active components is low, the number of repeated regeneration times is small, and the performance of the catalyst is reduced are solved, the regenerated catalyst obtained through the regeneration method is not lower than that of a fresh catalyst in the aspects of catalyst conversion rate, selectivity and stability, and the regeneration effect is remarkable.

The invention relates to the technical field of chemical production, in particular to a method and device for prolonging the service life of an active metal catalyst on line, and the method comprises the following steps: respectively carrying out activity recovery on the active metal catalyst by using an alkane solvent and a mixed gas containing H2, an ammonia-containing compound and an inert gas; the activity recovery comprises solvent circulation desolvation and hydrogen circulation cracking, and the solvent circulation desolvation comprises dissolution, internal circulation and / or external circulation; when gamma is more than gamma hydrogen and less than gamma solution, carrying out solvent circulation desolvation; when gamma is smaller than or equal to gamma hydrogen, hydrogen cycle cracking is carried out; when gamma is greater than or equal to gamma solution, reacting; gamma is the activity% of the catalyst at any stage; gamma hydrogen is a critical value for hydrogen cycle cracking, and gamma hydrogen is less than or equal to 60%; the gamma solution is a critical value of the solvent circulation desolvation, and the gamma solution is more than 60% and less than or equal to 80%. The method adopts a mode of combining solvent circulation desolvation and hydrogen circulation cracking, so that the activity of the catalyst is effectively improved, the service life is prolonged, and the number of times of unloading the catalyst is reduced.

The invention relates to a method for continuously synthesizing a dapagliflozin intermediate, and belongs to the technical field of drug intermediate synthesis. The method comprises the following steps: mixing 5-bromo-2-chloro-4 '-ethoxydiphenylmethane, a photocatalyst and THF (tetrahydrofuran), introducing the mixture into an ultraviolet light catalytic micro-channel for pre-activation to generate an aryl free radical intermediate, namely a pre-activation solution, carrying out contact reaction on the pre-activation solution and a THF solution of 2, 3, 4, 6-tetra-O-trimethylsilyl-D-glucolactone in a low-temperature coupling area of a micro-reactor, and carrying out purification, purification and purification to obtain the aryl free radical intermediate. The reaction liquid is introduced into a dynamic quenching zone and is mixed with supercritical CO2 on line, an intermediate I is obtained through supercritical fluid extraction and separation, and the photocatalyst is recycled; the method has the advantages of high reaction efficiency, convenience in catalyst recovery and simplicity in product separation.

The invention relates to the technical field of desulfurization catalyst regeneration, in particular to a desulfurization catalyst integrated regeneration device and a processing technology thereof.The desulfurization catalyst integrated regeneration device comprises a reduction tower body, an L-shaped supporting rod is fixedly connected to the upper surface of the reduction tower body, a driving mechanism is fixedly connected to the upper end of the L-shaped supporting rod, and a stirring mechanism is fixedly connected to the side face of the L-shaped supporting rod; a turning mechanism is arranged between the driving mechanism and the stirring mechanism, a lifting mechanism is fixedly connected to the upper surface of the reduction tower body, and an air exchange mechanism is arranged on the inner wall of the reduction tower body. The baffles are driven by the sliding rods to turn over on the side faces of the special-shaped sliding grooves, and the baffle at the other end is driven by the third transmission belt, so that the two communicating transoms can exchange air through the air inlet electric fan and the air outlet electric fan, the constant temperature in the reduction tower body is guaranteed, the manufacturing cost is low, and the service life is long; constant temperature is adjusted in a physical ventilation mode, and the error rate is greatly reduced.

A method for reforming carbon dioxide and methane by using a catalyzed plasma reactor, the method includes providing a dielectric barrier discharge plasma reactor including a catalyst bed in a plasma discharge zone, injecting a reaction gas into the plasma reactor, generating plasma within the plasma discharge zone of the plasma reactor, generating a reformed gas by interaction between the plasma and the catalyst bed, and separating the reformed gas. The reaction gas includes methane, carbon dioxide, oxygen, and inert gas, the reformed gas includes carbon monoxide and hydrogen, and the oxygen is about 2 volume percent to about 15 volume percent of a total volume of the reaction gas.

The invention relates to the technical field of regeneration of deactivated catalysts, in particular to a modification regeneration method of a deactivated SCR (selective catalytic reduction) denitration catalyst, which comprises the following steps: carrying out ash removal treatment on the deactivated SCR denitration catalyst to be treated, and then carrying out chemical cleaning; immersing the cleaned catalyst into the pretreatment liquid for immersion treatment, and then drying and roasting for the first time; immersing the catalyst subjected to primary roasting into deionized water for impregnation, pre-drying, and then immersing into a wide-temperature modified active replenishing liquid for vacuum impregnation treatment; and drying the catalyst subjected to vacuum impregnation, and roasting for the second time to obtain the modified regenerated catalyst. According to the method, the low-temperature denitration efficiency of the inactivated SCR denitration catalyst can be greatly improved while the technical process is simple, the regenerated catalyst can be suitable for the sulfur-containing flue gas environment of a power plant, and the high-temperature SO2 / SO3 conversion rate can be remarkably reduced.

The embodiment of the utility model provides anti-blocking catalyst screening equipment based on solid-phase catalysis, and relates to the technical field of catalyst evaluation and screening. The anti-blocking catalyst screening equipment based on solid-phase catalysis comprises a reactor component, a gas distribution component, a gas analysis component and a central processing unit for central control, in order to store the screening equipment, a rack is erected on the outer surface of the reactor component, and a movable bearing assembly is arranged on the left side of the rack; a plurality of reaction storage parts are annularly arranged on the surface of the movable bearing assembly, and a mechanical arm is mounted at the right side end part of the movable bearing assembly. According to the scheme, the problem of blockage caused by long-term use of the reaction storage part can be avoided, and a reasonable blockage clearing method is adopted for the reaction storage part according to the detected blockage degree of the reaction storage part; therefore, manual operation steps can be reduced, and the multiple reaction storage parts can be subjected to convenient anti-blocking treatment.

The utility model discloses a regeneration device for a supported noble metal catalyst, which comprises a catalyst washing tank, a liquid outlet pipe, a stirring component, a feeding pipe, a nitrogen feeding pipe and a conveying pipe are respectively mounted on the catalyst washing tank, and a vacuumizer is mounted on the nitrogen feeding pipe; the regeneration reactor is arranged on the lower side of the catalyst washing tank, a feeding pipe and a discharging pipe are installed on the regeneration reactor, the periphery of the regeneration reactor is sleeved with a first heater, and a plurality of temperature measuring thermocouples are installed on the outer wall of the regeneration reactor; the nitrogen purging reactor is connected with a nitrogen conveying pipe, the feeding pipe and the nitrogen conveying pipe are combined and then are communicated with the feeding pipe, and a second heater is mounted on the nitrogen conveying pipe; the controller is connected with the stirring assembly, the vacuumizer, the regeneration reactor, the first heater and the second heater in a wireless or wired mode and controls the stirring assembly, the vacuumizer, the regeneration reactor, the first heater and the second heater, and the temperature measuring thermocouple is connected with the controller for data interaction.

The utility model discloses low-temperature denitration catalyst regeneration equipment, and relates to the technical field of denitration catalyst regeneration, the low-temperature denitration catalyst regeneration equipment comprises a treatment box and a soaking box, a water flow driving mechanism is arranged at the bottom of the treatment box and is used for driving water flow to separate dust particles which are stubborn in adhesion; according to the low-temperature denitration catalyst regeneration equipment, three-dimensional circulating vertical water flow is formed through the water flow driving mechanism, and the low-temperature denitration catalyst regeneration equipment is formed by combining the chemical action of a cleaning agent; according to the low-temperature denitration catalyst regeneration cleaning device, double cleaning of physical washing and chemical dissolution of stubborn dust particles on the surface and in pores of a low-temperature denitration catalyst body is achieved, the problem that dust is difficult to separate in traditional soaking cleaning is effectively solved, and the regeneration separation effect is remarkably improved; accurate movement of the low-temperature denitration catalyst body in the horizontal direction and the vertical direction is achieved, and manual intervention is reduced through automatic operation.

A method may include operating a dehydrogenation process whereby a hydrocarbon-containing feed is converted to light olefins, wherein the dehydrogenation process utilizes a fluidized process catalyst that circulates between a reactor and a combustor. The method may comprise withdrawing the process catalyst from the dehydrogenation process, modifying the process catalyst to form a modified catalyst, and adding the modified catalyst back to the dehydrogenation process. The process catalyst may include from 0.1 wt. % to 10 wt. % of one or more metals chosen from gallium, indium, thallium, or combinations thereof, from 1 ppmw to 1000 ppmw of one or more metals chosen from platinum, palladium, rhodium, iridium, ruthenium, osmium, or combinations thereof, and at least 85 wt. % support. Modifying the process catalyst may include adding one or more of manganese, iron, chromium, or vanadium.

The invention discloses a dechlorination regeneration method of a chlorine poisoning noble metal catalyst and an application of the regenerated noble metal catalyst in polyolefin hydrogenolysis, and the dechlorination regeneration method comprises the following steps: dispersing the chlorine poisoning noble metal catalyst in water, adding a strong nucleophilic reagent for treatment, and carrying out centrifugal separation, washing and drying treatment to obtain the chlorine poisoning noble metal catalyst. The regenerated noble metal catalyst is obtained. A strong nucleophilic reagent dechlorination regeneration strategy under a room temperature mild condition is provided, chemically inert metal-chlorine bonds are broken through a nucleophilic substitution effect, noble metal particles are prevented from being agglomerated and sintered while deep dechlorination is realized, polyolefin hydrogenolysis activity of the catalyst can be completely recovered, activity improvement can be realized, and the catalyst has a good application prospect. Meanwhile, the regeneration cost is greatly reduced, and the regenerated noble metal catalyst can be used for efficiently hydrogenolyzing, upgrading and recycling waste polyolefin to obtain liquid alkane fuel with high additional value.

The invention relates to a batch method for leaching a spent catalyst comprising a metal from group VIB, and / or a metal from group VIII, and a support based on one or more oxides, characterised in that the method comprises N leaching steps, N being ≥ 2, by bringing the spent catalyst into contact with a leaching solution comprising an organic compound, wherein each leaching step is followed by a solid / liquid separation step, and wherein the method comprises the following successive steps i, i varying from 1 and N: i) bringing into contact: - the spent catalyst containing a metal content C(i-1) with - a leaching solution containing an extracted metal content S(N-i) to produce, after a solid / liquid separation step, - a spent catalyst containing a metal content C(i), and - the leaching solution containing an extracted metal content S(N-i+1), wherein C(i-1) > C(i) and S(N-i) < S(N-i+1).

The utility model discloses a regenerator for esterification reaction catalyst, which relates to the technical field of catalyst regeneration, and comprises a bracket, a reaction vessel arranged on the bracket, and a steam heating jacket sleeved on the outside of a sealing groove, wherein a sampling port is arranged on the reaction vessel, a gate valve is arranged on the sampling port, a feed port of the gate valve is connected with the reaction vessel through the sampling port, a connecting pipe is arranged on the gate valve, a sampling tank is threadedly connected on the connecting pipe, the sampling tank is connected with the discharge port of the gate valve through the connecting pipe, and a sealing component is arranged between the sampling tank and the connecting pipe. The utility model can make it unnecessary to increase the pressure in the reaction vessel or to cool down the steam heating jacket during sampling, and at the same time, the closing of the gate valve can ensure the sealing between the reaction vessel and the outside world, so that sampling can be made more convenient, quick and easy to operate, and the purpose of multiple sealing between the sampling tank and the reaction vessel is achieved, so as to ensure the normal and orderly progress of the regeneration work.

The invention provides a waste molybdenum-based catalyst regeneration method which comprises the following steps: crushing and grinding a waste molybdenum-based catalyst to obtain catalyst powder; adding a liquid caustic soda solution into the obtained catalyst powder, and placing in a reaction kettle for hydrothermal reaction to obtain molybdenum hydroxide and sodium sulfate; the obtained molybdenum hydroxide is sequentially subjected to drying treatment, forming treatment and calcining treatment, and the regenerated catalyst is obtained. According to the present invention, the poisoning catalyst is regenerated by mainly using the hydrothermal reaction principle, such that the catalyst cost can be reduced, and the operation cost caused by other waste catalyst recovery methods can be avoided, such that the regeneration of the catalyst active component is achieved through the multi-stage staged treatment so as to significantly improve the regeneration efficiency and the regeneration frequency; and a new technical path is provided for resource utilization of the waste molybdenum-based catalyst.

The present invention relates to an apparatus and a method for producing propylene by dehydrogenating propane using fluidized bed technology in which a chlorine dispersion device and a hydrogen reduction device are added downstream of a catalyst regenerator. According to the present invention, when the chlorine dispersion device and the hydrogen reduction device are added downstream of the catalyst regenerator, the adhesion between a sintered catalyst metal and a support increases in a catalyst regeneration process, and catalyst dispersibility and propylene yield can be maintained at the initial levels.

A process for separating fillers from catalysts and gases in plastics in a fluidized bed catalytic pyrolysis process is described that converts waste plastics, polymers, and other waste materials to useful chemicals and fuel products, such as aromatics such as paraffins, olefins, and BTX.

Hybrid catalysts for simultaneous dehalogenation and cracking of plastic derived oil include composite particles, where each of the composite particles includes red mud particles and Mordenite zeolite particles. A process includes contacting a plastic derived oil stream with the hybrid catalyst in an FCC reactor to produce an FCC effluent and a used hybrid catalyst. The plastic derived oil stream comprises halogen-containing compounds, and contacting the plastic derived oil stream with the hybrid catalyst causes halogen-containing compounds to react to form hydrocarbons and hydrogen halides, where the hydrogen halides are adsorbed onto surfaces of the red mud particles. The FCC effluent has a concentration of the halogen-containing compounds less than the plastic derived oil stream. Contacting the plastic derived oil stream with the hybrid catalyst causes hydrocarbons in the plastic derived oil stream to undergo cracking reactions over the Mordenite zeolite particles to produce the FCC effluent.

The invention discloses a regeneration method of a metal modified mordenite catalyst used in a methanol amination reaction, and belongs to the technical field of catalyst regeneration. The catalyst regeneration method comprises the following steps: firstly, removing non-framework aluminum in a catalyst by using an organic acid solution, and then washing by using an organic solvent to remove residual organic acid and part of carbon deposit after acid treatment; oxidizing carbon deposit on the surface of the catalyst by adopting a hydrogen peroxide solution and inert mixed gas containing ozone; and finally, reducing active metal components in the catalyst by adopting hydrogen. According to the regeneration method, carbon deposit on the surface of the catalyst can be well and effectively removed under the low-temperature condition, generation of non-framework aluminum on the surface of mordenite in the regeneration process is reduced, the service life of the catalyst is effectively prolonged, and the regenerated catalyst can keep good reaction performance in the methanol amination reaction.

The invention belongs to the technical field of coke oven gas purification treatment, and particularly discloses a method for removing hydrogen sulfide in coke oven gas through photocatalysis, generation of oxygen vacancies is promoted by adopting a synthesis concept of synergistic effect of silver doping and polyethyleneimine, polyethyleneimine provides an alkaline condition on one hand, lone electron pairs on nitrogen are coordinated with zinc on the other hand, and the hydrogen sulfide in the coke oven gas is removed through photocatalysis. The preparation method comprises the following steps: by taking H2S and polyethyleneimine as raw materials, generating abundant oxygen vacancies under the synergistic effect of the H2S and silver, preventing agglomeration of generated ZnO and increasing reaction sites by taking polyethyleneimine as a surfactant, and then promoting a cascade reaction between ZnO < 1-x > and H2S by taking abundant oxygen vacancies, so that a 1D / 3D-ZnS / ZnO heterojunction is generated in situ to further reduce recombination of photo-generated electron holes; the catalyst converts H2S into elemental sulfur through photo-induced electrons and holes, and a carbon disulfide solution is used for cleaning the catalyst to realize regeneration of the catalyst. The method provided by the invention not only improves the removal efficiency of H2S, but also reduces the operation cost and reduces environmental pollution.

The invention discloses a regeneration method of a marine vanadium-titanium denitration catalyst. The regeneration method comprises the following steps: (1) immersing a deactivated catalyst into a diluent of a special cleaning agent for grease for cleaning; (2) carrying out spray cleaning on the catalyst cleaned in the step (1), wherein a spray cleaning solution is water; (3) carrying out acid chemical cleaning on the catalyst cleaned in the step (2) to remove alkali metal harmful substances such as sodium, potassium and the like attached to the catalyst; (4) washing the catalyst cleaned in the step (3) with water; (5) drying the catalyst cleaned in the step (4); (6) the catalyst dried in the step (5) is soaked in an active solution for active reimplantation, and the active solution mainly comprises ammonium paratungstate and ammonium molybdate and further comprises one of ammonium metavanadate and vanadyl oxalate; and (7) draining the catalyst subjected to activity reimplantation in the step (6), and putting the catalyst into a calcining furnace for activity activation. According to the method disclosed by the invention, more than 98% of pollutants such as grease, ash, alkali metal and sulfate can be removed, and the use temperature after regeneration is reduced by 20-60 DEG C compared with the original use temperature.

The invention discloses a micromolecular alkane VOCs catalytic oxidation device and method capable of regenerating and desorbing, and belongs to the technical field of VOCs control. The device adopts a U-shaped flue, and is sequentially provided with a high-temperature flue gas heat exchange module, an integral catalyst and a noble metal catalysis plate module along a flue gas flow. The method comprises the following steps: preheating inlet VOCs through high-temperature flue gas heat exchange, carrying out primary catalytic oxidation by using an integral catalyst, carrying out heat exchange and temperature regulation, and then entering a noble metal catalytic plate module for deep catalytic oxidation; and in-situ regeneration and catalytic activity recovery of the noble metal catalytic plate are realized in a microwave-assisted air regeneration manner. According to the invention, high-efficiency, stable and energy-saving removal of micromolecular alkane VOCs can be realized, and the problem of deactivation of a noble metal catalyst caused by carbon deposition and sintering is effectively solved.

The invention discloses a method and equipment for dephosphorizing and desulfurizing yellow phosphorus tail gas, aiming at solving the technical problem of efficiently removing phosphorus-containing pollutants and sulfur-containing pollutants in the yellow phosphorus tail gas. Comprising the following steps: introducing yellow phosphorus tail gas into a dephosphorization device to remove phosphorus-containing substances in the yellow phosphorus tail gas, wherein the dephosphorization device adopts a first catalytic flue gas treatment device; introducing the dephosphorized flue gas into an organic sulfur hydrolysis conversion device to convert organic sulfur in the dephosphorized flue gas into H2S, wherein the organic sulfur hydrolysis conversion device adopts a second catalytic flue gas treatment device; and introducing the organic sulfur hydrolysis conversion flue gas into a desulfurization device to remove H2S in the organic sulfur hydrolysis conversion flue gas, wherein the desulfurization device adopts a third catalytic flue gas treatment device. The efficient continuous treatment of phosphorus-containing pollutants and sulfur-containing pollutants in the yellow phosphorus tail gas can be realized.

A method for decomposing ammonia (NH3) to hydrogen (H2) and nitrogen (N2) includes contacting a H2-containing feed gas stream with a carbon material supported metal (M-C) catalyst at a temperature of about 500° C. to form a reduced M-C catalyst; contacting an NH3-containing feed gas stream with the reduced M-C catalyst at a temperature of about 200 to about 600° C. thereby converting at least a portion of the NH3 to H2 and N2, and regenerating the M-C catalyst to form a regenerated M-C catalyst, and producing a residue gas stream leaving the reactor; and separating the H2 from the residue gas stream to generate a H2-containing product gas stream. The regenerated M-C catalyst is substantially free of agglomerated particles and sintered particles.