191results about How to "Eliminate carbon deposits" patented technology

The invention discloses a diesel detergent additive, which comprises the following components by weight percent: 15-60% of polyisobutylene succinimide, 5-20% of polyolefin amine, 5-20% of alkyl imidazole, 5-15% of glyceryl monooleate and 20-70% of organic solvent. The diesel detergent additive of the invention has good effects on cleaning oil ways of a diesel vehicle and eliminating carbon deposition of an oil nozzle, simultaneously can improve lubricating property of the diesel, improve exhaust emission and save the diesel.

An oil-soluble multifunctional additive for heavy oil or fuel oil contains more surfactants, composite catalytic combustion adjuvant and detergent disperser, and is characterized by saving oil by 10-25%, increasing added water to 10-30% and eliminating black smoke. A process for preparing emulsified heavy oil or fuel oil is also disclosed.

A methanol petrol fuel as clean resource consists of petrol 30-70, methanol 25-70 and other assistants. The process is carried out by mixing. Its advantages include high power, good cold start, resources saving and no environmental pollution.

The invention relates to a Ni / La2X2O7 catalyst for hydrogen production by autothermal reforming of acetic acid. , Aiming at the problem of inactivation of an existing catalyst in the acetic acid autothermal reforming process, the invention provides the novel catalyst which is stable in structure and high in activity. A catalyst precursor is prepared by adopting a sol-gel method, and roasted by adopting an impregnation method to obtain the Ni / La2X2O7 (X is Ce, Zr or Ti) catalyst. According to the catalyst, the stability of active components is improved, the yield of hydrogen is increased, and generation of byproducts such as methane and acetone is effectively inhibited.

The invention relates to a method for realizing the increase production of butadiene, which mainly solves the problem that the yield of the butadiene is not high because the conversion rates of 1-butene, cis-2-butene and reverse 2-butene as three isomers in the n-butene are different under the condition of utilizing the same catalyst in the prior art. According to the method, two segments of adiabatic and isothermal fixed bed reactors connected in series are adopted; butene, oxygen-containing gas and water vapor as raw materials enter the first segment of the reactor A filled with a catalyst I according to definite proportion; and after a heat exchange treatment is carried out on the gas at an outlet of the first segment of the reactor A, the gas is mixed with the supplemental oxygen-containing gas, and then mixed gas enters the second segment of the reactor B filled with a catalyst II according to definite proportion. Therefore, based on the technical scheme that the the catalyst I has high conversion rate for the 1-butene and the cis-2-butene and the catalyst II has high conversion rate for the reverse 2-butene, the problem is solved well. As a result, the method provided by the invention can be used for the industrial production of the butadiene by the oxidative dehydrogenation of the n-butene.

A novel carbinol gasoline fuel relates to an engine fuel, in particular to a novel liquid fuel for a gasoline engine. According to the weight parts, the novel carbinol gasoline fuel is mixed simply by the following raw materials of the composition: 20-80 of gasoline, 20-90 of carbinol, 2-10 of petroleum ether, 1-5 of 2-methylpentane, 0-5 of octane, 0-5 of isooctane, 0-5 of diethyl carbonate, 0-4 of cinnamene, 0.2-4 of trimethyl borate, 0-5 of dibutyl phosphite, 0.5-5 of dimethyl carbonate, 0-5 of methyl tertiary butyl ether, 0-4 of ether, 0-4 of isopropyl ether, 0-6 of acetone, 0-4 of isopropyl alcohol, 0-5 of isobutyl alcohol and 0-4 of anti-oxidant. The antiknock index is reinforced as the octane number is improved; and the compounding is optimized scientifically during the experiment and practice, thus leading the vehicle to keep the best stability on all aspects when the liquid fuel is in use.

The invention relates to energy conservation and emission reduction, in particular to a two-stroke engine with function Fourier blade wall and left right boxes with an increased compression ratio. Mould opening is approximate to multiple peak waves from large to small and from scattered to dense of a gradually damped frequency spectrum painted by imitating Fourier series, mathematics and physics describe high generalization of multiple practical phenomena, the motor scavenging turbulent motion rule can not be an exception and be exceeded, also, can be similar or used for reference more or less; the Fourier function notch (53j) and saltus inflection points (54j) of the wall are approximate to Gibbs overshot convergence wave, namely gradually approached rectangle saltus wave painted by imitating the Fourier series Gibbs overshoot phenomenon and fluctuated convex-concave (54k) with multiple of peak waves from large to small and from scattered to dense of the gradually damped frequency spectrum painted by imitating the Fourier series; therefore, the formed cylinder special body likes influences the air flow as the rock in midstream. The two-stroke engine has the linearity and guidance of advanced mathematics function imitating, and damping force characteristics and is beneficial for the noise high-frequency band, ratio of pressure rise and compression ratio comprehensively.

The invention discloses a preparation method of perfluoro-2-methyl-3-pentanone. According to the method, perfluoro-2-methyl-2-amylene is used as a raw material to be subjected to gas-phase reaction with a certain amount of oxidative gas such as oxygen or air in a fixed bed reactor under the catalyst existence condition; the perfluoro-2-methyl-3-pentanone is directly prepared through one-step or two-step gas-phase reaction, wherein the two-step gas-phase reaction mainly includes perfluoro-2-methyl-2-amylene epoxidation reaction and epoxidation compound gas-phase isomerization reaction. By using the technology, the fixed bed reactor process is used for continuously performing the gas-phase reaction; solvents are not needed in the production process; the cost is greatly reduced; the environment pollution problem is solved; the process safety is improved; meanwhile, the problems of separation of solvents from products, recovery treatment of solvents and catalysts and the like are also avoided. Therefore the preparation method has the characteristics that the cost is low, the preparation is convenient, technical parameters of the catalyst reaction process can be easily controlled, the product separation and purification are simple, the preparation method is very suitable for industrial production and the like.

The invention relates to a comprehensive method for improving ignition and lubrication of an engine, which can be used for various internal-combustion engines and compressors. A blade fan is additionally arranged at the back of a speed-regulating wheel; meanwhile, a pore is drilled on a time-limited large gear disc; a small fin is additionally arranged on a cam shaft of the time-limited large gear disc; in addition, a novel piston ring, including a spiral double-buckle type piston ring with a single-stroke sealing function and a capillary lubricant function and a piston oil ring, is adopted; a piston with a plurality of lubricant pores is adopted; and a capillary lubricant piston base is adopted to match a movable core sparkle plug and a function wave combustion chamber, so as to comprehensively improve on multiple aspects of standing problems on sealing, lubrication and ignition of the engine, energy conservation and emission reduction.

The invention discloses a contactless power supply coupling device for a magnetic-levitation train and the magnetic-levitation train. The contactless power supply coupling device for the magnetic-levitation train comprises an emitting end and a receiving end, wherein the receiving end is formed by connecting multiple turns of rectangular coils spirally in series; the receiving end is arranged below a levitation electric magnet on one side of the train through a receiving end support which is parallel to the ground; the emitting end is formed by two parallel long straight cables; the initial ends of the two long straight cables are connected with the output end of an inverter; the tail ends of the two long straight cables are connected; the emitting end is arranged on the outer side of a guide rail through an emitting end support in a manner of being parallel to the ground; the guide rail is located on the same side of the train as the levitation electric magnet for assembling the receiving end; and the emitting end is right below the receiving end. According to the contactless power supply coupling device, a train body is not changed in large scale, and power supply for the intermediate speed magnetic-levitation train is realized. Information about a clearance between the emitting end and the receiving end is obtained through arrangement of existing levitation sensors, and arrangement of special sensor components is avoided, so that cost is effectively reduced, and the dead-weight of the train body and maintenance management work load are lowered.

The invention discloses a fuel cylinder block cleaning device, and relates to the technical field of fuel cylinder cleaning. The fuel cylinder block cleaning device comprises a driving mechanism, a holding handle, an inflation bag, a gas transmission pipe and a cleaning mechanism; the middle part of the bottom of the holding handle is fixedly connected to the top of the driving mechanism; the inflation bag is fixedly mounted in the middle part of the top of the holding handle; an exhaust port of the inflation bag is connected with and communicates with the top end of the gas transmission pipe;the bottom end of the gas transmission pipe penetrates through the top of the driving mechanism, and extends into the driving mechanism; and the cleaning mechanism is fixedly mounted under the driving mechanism. The fuel cylinder block cleaning device discharges cleaning liquid into the cleaning mechanism through the driving mechanism, drives the cleaning mechanism to rotate through the driving mechanism to discharge the cleaning liquid, can perform rotary brushing when the cleaning liquid is uniformly coated on the walls of intake manifolds, effectively removes accumulated cartons attached in the intake manifolds, and guarantees normal use of fuel cylinders.

The invention relates to a method for preparing aromatic hydrocarbon by methyl alcohol at high selectivity, and relates to aromatic hydrocarbon. The method comprises the following steps of pretreating a catalyst; catalyzing: after the catalyst is pretreated, adding reaction raw materials, forming the methyl alcohol and a hydrogen trapping-removing agent, and reacting by a solid catalyst bed layer at the air speed of 500 to 10000h<-1>, so as to obtain the aromatic hydrocarbon; adding a salt compound of metal element into a solvent, dispersing by ultrasonic waves, adding a modified acid zeolite molecular sieve, and continuing to disperse by ultrasonic waves, so as to obtain a mixture; sucking, filtering and washing the mixture, and drying a filter cake; calcining the dried sample, and reducing, so as to obtain the catalyst. The method has the characteristics that when the aromatic hydrocarbon is prepared by the methyl alcohol, the aromatic hydrocarbon selectivity is excellent, the methane and C5+ hydrocarbon selectivity is low, and the catalyst selectivity is high; the aromatic hydrocarbon selectivity is 85% or above, and the methane selectivity is lower than 2%.

The invention discloses a methanol gasoline cosolvent. The methanol gasoline cosolvent is prepared by mixing the following components in volume fraction: 30-50% of C3-6 fatty alcohol, 4-12% of dimethyl carbonate, 30-40% of methyl tertiary butyl ether and 10-25% of alkyl glycoside, and the dosage of the methanol gasoline cosolvent accounts of 1-2% of the total volume of prepared methanol gasoline. After the cosolvent disclosed by the invention is added in the methanol gasoline, the solubilization water resistance of the methanol gasoline reaches 4-6%, the methanol gasoline is clear and transparent, is free of layering and is long in stable phase, and carbon deposits at various positions of a combustion system can be effectively removed to avoid such phenomena as power reduction and insufficient combustion caused by the carbon deposits, so that the engine performance is improved.

An oil-saving cleaner of gasoline for car contains cleaning disperser (the mixture of dichloroethane and N-methyl-2-pyrrolidone), combustion promoter (alcohol-in-benzene), anti-explosion agent (the mixture of ferrocene and isopropanol), polar solvent (methanol or ethanol) and non-polar solvent (benzene, toluene, xylene, or their mixture). It can improve performance of gasoline, clean gasoline, making gasoline fully burn, and decrease pollution of tail gas.

The invention discloses a carbon deposit processing device and method of an air cylinder and accelerants. The carbon deposit processing device comprises a compressed air generation mechanism, a first valve body, a second valve body, a third valve body, an air spraying nozzle and a pressure sensor, wherein the compressed air generation mechanism is provided with a piston cavity and a compressed air storage cavity of a first cavity and a second cavity divided by a piston arranged inside the compressed air generation mechanism, the second cavity is provided with an air inlet and is in one-way connection with the compressed air storage cavity through a one-way valve, the first valve body is arranged on an exhaust pipe and located between a combustion chamber and the accelerants, the second valve body controls the air inlet in the second cavity to be opened and closed, the third valve body is arranged on a connecting pipe, the air spraying nozzle is connected with the compressed air storage cavity and provided with a control valve, a spraying port is located in the combustion chamber of the air cylinder, and the pressure sensor is used for detecting the air pressure inside the compressed air storage cavity. The carbon deposit processing device and method of the air cylinder and the accelerants can eliminate carbon deposits of the air cylinder and the accelerants, do not need chemicals or external force, and do not affect the normal work of an engine.

The invention discloses a spark plug of a gasoline engine with multiple laterals and a multifold gap. Various improved electrodes are provided, for example, an electrode (12) is provided with multiple laterals and a multifold gap, the middle of the electrode (12) is provided with the multifold gap (18) which is favorable for opening a discharging channel and is easy to have more sparking; an improved electrode is an electrode (21) provided with multiple laterals and a multifold gap (grid plate grid) and has the transverse characteristic of multiple plates which are favorable for forming grid plate grid lattice effect so as to improve the probability of electric sparks and drum shape discharging; and a particularly improved electrode is an electrode (22) provided with a round basin with a lateral surface and a dug middle acute-angle star, which is characterized by the round basin with the lateral surface and the dug middle acute-angle star, the electrode has the basin, the top and the lateral surface so as to increase the lateral discharging front, the five-pointed star dug in the middle of the electrode is favorable for the wedge effect of the discharging gap and marginal discharging effect to form asymmetrical multi-point random discharging channels so as to contribute to improving discharging probability and removing accumulated carbon, and the acute-angle star-shaped electrode is favorable for the continuous electric spark effect, turbulence-caused spark-front torsion, mutual penetration of molecules, the increase of turbulence rate and the increase of ignition probability. The various improved electrodes are selected according to different machine types, particularly ignition angles, more or less in experimental units during practical use.

The invention discloses a special furnace end for an alcohol base liquid fuel. The special furnace end comprises an oil inlet pipe, a vaporization head, a burning bowl, an air inlet bowl, a furnace cavity wall and an air inlet pipe, wherein an air conveying hole in the air inlet pipe is communicated with an air cavity in the air inlet bowl in the direction of an upward and oblique tangent line through the side wall of the air inlet bowl; a circle of energy collection plate which is provided with cellular through holes and tilts to a burning hole in the burning bowl is arranged in the circumferential direction of the furnace cavity wall; the rear surface of the energy collection plate and the furnace cavity wall form an air return cavity; a downward discharge type air outlet pipe communicated with the outside is arranged in the air return cavity; and a pot body hole on the furnace cavity wall and a pot bottom wall form a contact seal structure when in use. According to the special furnace end, a bottom air introduction mode is changed into a lateral air introduction mode, the energy collection plate is arranged in a furnace cavity, the downward discharge type air outlet pipe is arranged in the air return cavity, and the contact seal combination structure of the pot body hole on the furnace cavity wall is adopted, so that the total heat efficiency is greatly improved. Actual measurement shows that the heat efficiency can be improved by more than 20%. Therefore, the special furnace end is especially suitable for burning and cooking of the alcohol base liquid fuel.

The multifunctional diesel oil detergent includes the following components: polyisobutenyl succimide 5-40 %, bononized ash-free dispersant 5-30 %, polyetheramine 5-30 %, alkyl RE 1-5 %, alkyl nitrate 5-15 %, organic acid ester 3-10 % and organic solvent 10-70 %. The present invention is used for cleaning oil path, especially nozzle, in diesel engine, and can eliminate carbon deposit, reduce black smoke, improve lubricating performance, resist emulsification, resist corrosion, save oil and reduce exhaust.

The invention relates to an environment-friendly and energy-saving lubricating oil for effectively removing the carbon deposition, which belongs to the technical field of lubricant. The invention is characterized in that the environment-friendly and energy-saving lubricating oil is made of the raw material with the weight proportions as follows: 5% to 8% molybdenum disulfide fine powder with the particle diameter of 1 to 80 micrometers, 5% to 8% Al2O3 with the particle diameter of 1 to 80 micrometers, 3% to 5% MgO with the particle diameter of 1 to 80 micrometers, 3% to 5% antiwear agent of oxymolybdenum dialkyldithiophosphate, 3% to 5% dispersant of succinimide, 1% to 2% decarbonizer and balance of liquid lubricating material. The product of the invention has the advantages that: firstly, furthest removing of carbon deposition is realized; secondly, the product has the characteristics of super lubrication, wear reduction, extreme pressure resistance and high temperature resistance; thirdly, service life of lubricating components of mechanical equipments is prolonged by more than one time; fourthly, fuel is saved by 15% to 25%.

The invention discloses a preparation method of an anti-carbon deposition methane dry gas reforming Ni-based alkaline earth metal modified catalyst. The preparation method comprises the following steps of: mixing one of three alkaline earth metal raw materials according to a certain molar mass ratio to form a mixture, adding citric acid which is 1-2 times of the molar mass of metal ions in the mixture into the mixture, and mixing the citric acid with the mixtureand dissolving the newly obtained mixture to obtain mixed sol; evaporating the mixed sol to dryness to obtain gel, and then transferring the gel into a drying oven for drying the gel to obtain dry glue; pretreating the dry glue in a muffle furnace, carrying out heat preservation roasting on the dry glue in the muffle furnace, and cooling to obtain a perovskite carrier; and adding different perovskite carriers into a Ni (NO3) 3 solution to obtain Ni-based alkaline earth metal modified catalysts respectively. The catalyst has more active oxygen species, the oxygen species can eliminate carbon deposition on the surface of the catalyst and improve the carbon deposition resistance of the catalyst, the number of alkali centers of the catalyst modified by adding alkaline earth metal is obviously increased, and obtained Ni particles are smaller in size and higher in dispersity.

The invention relates to a methanol gasoline complexing agent for vehicles and a preparation method of the methanol gasoline complexing agent. The methanol gasoline complexing agent is prepared from the following raw materials in percentage by mass: 4-5% of triethanolamine, 30-35% of liquid paraffin, 3-5% of tween-80, 3.5-6% of oleic acid, 25-28% of butyl alcohol, 12-14% of isoamyl alcohol, 5-8% of acetone, 1-5% of ethylene glycol monobutyl ether, 5-6% of kerosene and 6-10% of benzene. The preparation method comprises the following steps: 1, mixing liquid paraffin, triethanolamine and isoamyl alcohol according to the ratio of 6:5:1:2.4 to 8.75:7:1:3.5 for later use; 2, mixing tween-80, oleic acid and acetone according to the ratio of 1:0.7:1 to 1:2:2.67 for later use; 3, mixing ethylene glycol monobutyl ether and benzene according to the ratio of 1:1:1.2 to 1:6:10 for later use, and mixing the three mixtures, thereby obtaining a finished product. The raw materials needed in the methanol gasoline complexing agent are rich and easy to obtain, no 'three wastes' are generated, the methanol gasoline complexing agent is safe, environmentally friendly and simple in process, and the series of technical problems of a conventional high / low vehicle methanol gasoline finished product are effectively solved.

The invention discloses a regeneration method for a waste mercuric chloride contact agent and belongs to a recycling technique of the waste mercuric chloride contact agent. The regeneration method comprises the following steps: firstly, performing wet-process leaching on the waste mercuric chloride contact agent, performing leaching reaction under an ultrasonic effect, and filtering, thereby acquiring a mercury-containing filtrate; controlling temperature, adding a neutralizer for regulating pH value, completely converting mercury ions in the solution into mercuric oxide sediments, and keepingtoxic phosphor and sulfur in the mercury contact agent still in the solution; dissolving mercuric oxide with hydrochloric acid, thereby acquiring a mercuric chloride solution used for preparing the mercury contact agent; performing microwave high-temperature activating on filter residue (waste contact agent for mercury removal) under the condition of activating gas, thereby acquiring a regenerated activated carbon for waste mercury contact agent; soaking the activated carbon for waste mercury contact agent in a mercuric chloride solution for waste mercury contact agent, thereby acquiring a new mercuric chloride contact agent. According to the invention, efficient recycling of mercuric chloride and regeneration of activated carbon can be simultaneously realized in the manner of combining ultrasonic acidizing leaching with microwave high-temperature activating treatment.

The present application discloses a method for partially regenerating a catalyst of methanol to an olefin. The method comprises the following steps: placing the deactivated catalyst of the methanol tothe olefin in a regenerator, and performing a partial regeneration reaction to obtain a regenerated catalyst, wherein at least a portion of the regenerated catalyst has a carbon deposition amount ofmore than 1%. The present application discloses a method of the methanol to the olefin, a reaction of the methanol to the olefin is performed in a fluidized bed by adopting the catalyst of the methanol to the olefin, and the method is characterized in that at least a portion of the regenerated catalyst has the carbon deposition amount of more than 1%.

The present invention relates to a coal saving agent and a preparation process thereof, wherein the coal saving agent comprises, by weight, 6-12% of catalyst, 1-7% of a combustion-supporting agent, 25-35% of a penetrant, 25-35% of a leavening agent, 7-15% of a cleaning agent, 10-20% of a dispersing agent, and 7-12% of a sulfur-fixing agent. According to the present invention, the coal saving agent has effects of furnace combustion condition improving, coal seam gas permeability improving, complete coal combustion, coal-fired thermal efficiency improving, smoke dust emission reducing, heat conduction efficiency improving, sulfur fixing, smoke reducing, CO and SO2 emission reducing and environmental pollution reducing so as to achieve the purposes of combustion supporting, sulfur fixing, energy saving and desulfurization, wherein the coal can be saved by 5-10%, the fire power can be increased by more than or equal to 10%, the carbon deposition can be eliminated by 50-90%, and the sulfur can be reduced by 20-50%.

The invention discloses a preparation method of a supported Ni-MoCx catalytic material and application of the supported Ni-MoCx catalytic material to prepare synthetic gas by chemical-looping dry gasreforming. The supported Ni-MoCx catalytic material comprises MoCx, a large-specific-surface commercial supporter and metal Ni, wherein MoCx accounts for 25-75% by mass, metal Ni accounts for 2.5-7.5%by mass, and the large-specific-surface commercial supporter mainly comprises gamma-Al2O3, SiO2, CeO2, BN, hydrotalcite and the like and accounts for 22.5-67.5% by mass. An oxygen carrier microscopicstructure is regulated and optimized by using the supported Ni-based catalytic material as a base and introducing the aid transition metal molybdenum carbide material; therefore, efficient methane-to-synthetic gas process is achieved. The supported Ni-MoCx catalytic material herein has excellent H2 / CO ratio (about 2-2.5) suitable for Fischer-Tropsch synthesis and excellent cycle stability, and helps improve energy conversion efficiency.

The invention discloses a biomass gasification tar removing device and method based on chemical chain reforming. The device comprises a first cyclone separator, a preheater, a reforming reactor and an air combustion reactor which are sequentially connected, wherein the first cyclone separator is used for performing separation and dust removal on biomass gasification crude gas, the preheater is used for preheating the biomass gasification crude gas, the reforming reactor is used for subjecting the preheated biomass gasification crude gas and an oxygen carrier to a reforming reaction, the air combustion reactor is used for subjecting the oxygen carrier after the reforming reaction and air to a combustion reaction, a second cyclone separator for performing separation and dust removal on the oxidized oxygen carrier is connected between the reforming reactor and the air combustion reactor, and a third cyclone separator for performing separation and dust removal on the reacted gas is also connected with the reforming reactor. Tar macromolecules are partially oxidized into micromolecular substances such as CO, H2 and the like under the lattice oxygen and catalytic action of the oxygen carrier; the oxygen carrier is recycled between the reforming reactor and the combustion reactor, and regeneration of the oxygen carrier is simple.

The invention provides a cerium-based rare-earth catalytic combustion improver. A preparation method of the cerium-based rare-earth catalytic combustion improver comprises the following steps of: forming a carrier by C16H35O4P and / or phosphorous or kerosene; dissolving rear-earth oxide in an H2SO4 or HCI solution to obtain rare-earth feed liquid; mixing the carrier and the feed liquid to obtain a load organic phase; and mixing the load organic phase and cerium-based rare-earth oxide to obtain the cerium-based rare-earth catalytic combustion improver. The invention also discloses the preparation method of the cerium-based rare-earth catalytic combustion improver. The cerium-based rare-earth catalytic combustion improver provided by the invention is low in cost and simple in preparation and operation processes, and the adjustable range of component parameters is wide. After the cerium-based rare-earth catalytic combustion improver is added, the heat value of fuel oil is increased by 10-15%, the content of CO, CH and NOx in discharged exhaust gas is reduced by 50-60%, an energy saving and emission reduction effect can be realized very well, and simultaneously carbon deposits can be effectively cleared away. The cerium-based rare-earth catalytic combustion improver is wide in the application range, has no side effects on equipment and is simple and convenient to add and operate.

The invention provides a regeneration method for a deactivated transition metal catalyst. The method includes the steps of (1) roasting the deactivated catalyst in an oxygen-containing gas; (2) carrying out purging with a protective gas to replace the oxygen-containing gas; (3) introducing a reducing gas for a reduction reaction to obtain a regenerated catalyst. By adopting the high-temperature solid-phase reaction and controlled reduction strategies, carbon deposition can be eliminated to realize regeneration of the catalyst deactivated by carbon deposition, and meanwhile agglomerated metal nanoparticles can be dispersed again to realize regeneration of the catalyst deactivated by metal sintering. The method is easy and convenient to implement and high in regeneration efficiency, the catalyst can be repeatedly regenerated, the carbon deposition and sintering resistance of the regenerated catalyst is improved, and the service life of the regenerated catalyst is prolonged.