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 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 carbon deposit detergent for a gasoline direct injection engine combustion chamber. The carbon deposit detergent is prepared from the following components in parts by weight:12 to 25 parts of 2-methyl-2,4-pentendiol, 15 to 25 parts of propanediol butyl ether, 12 to 25 parts of methylbenzene, 10 to 20 parts of xylene, 0.5 to 5 parts of preservative, 2 to 8 parts of N-methyl pyrrolidone, 4.5 to 12 parts of dispersing agent, 3 to 15 parts of organic alkali, 2 to 15 parts of polyether polyols, and 0.3 to 3 parts of lubricating agent. The carbon deposit detergent for thegasoline direct injection engine combustion chamber is good in cleaning effect, high in cleaning efficiency, harmless to a ternary catalytic converter, and capable of effectively cleaning the carbon deposit in the combustion chamber, optimizing the air inlet amount, improving the utilization efficiency of the fuel oil and improving the current situation of difficulty in cold starting.

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 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%.

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 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 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 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.