3736results about "Hydrocarbon preparation" patented technology

The invention belongs to the technical field of ethylene oligomerization catalysis, and discloses a catalytic system for ethylene selective oligomerization and a preparation method and application thereof, and the catalytic system comprises a carbon bridge bidentate phosphine chromium catalyst, an organic boron auxiliary agent and an aluminum-containing activator in a molar ratio of 1: (1-50): (100-1500). The carbon-chromium catalyst is prepared by the following steps: reacting CrCl3 (THF) 3, a ligand and CH2Cl2 under stirring, filtering, and carrying out post-treatment to obtain the catalyst, the catalyst and the aluminum-containing activating agent are uniformly mixed, and then the organic boron auxiliary agent is added and stirred. The catalyst system constructed by the carbon bridge bidentate phosphine chromium catalyst, the organic boron auxiliary agent and the aluminum-containing activating agent realizes ethylene selective oligomerization. The catalytic system can realize high-efficiency and high-selectivity preparation of 1-hexene and 1-octene under the condition that aluminoxane co-catalysts such as MAO and MMAO are not adopted, the catalytic activity is high, the reaction initiation is rapid, the operation is stable, and the repeatability is good.

The invention provides a method for reducing polymer adhesion in ethylene oligomerization. According to the method, a double-kettle series polymerization process is adopted, a phosphine-nitrogen ligand, a chromium metal compound and a cocatalyst are added into a first reaction kettle, a nucleating agent is added into a second reaction kettle, the reaction is carried out in the first reaction kettle in the early stage and transferred to the second reaction kettle in the later stage for continuous reaction, oligomer is converted into high polymer through the nucleating agent, and the high polymer is stored in a particle form; therefore, the phenomenon that the oligomer winds the stirring paddle is reduced or avoided, the aggregation of the polymer in the reaction kettle is greatly reduced, and the operation time of the device is prolonged. The catalytic system can catalyze the ethylene oligomerization reaction with high activity, the catalytic activity reaches up to 10 * 10 < 6 > g product / (molCr.h), the overall selectivity of 1-hexene and 1-octene with high added values can reach 90% or above, and the phenomenon that a polymer is hung on a stirring paddle is greatly reduced.

The invention provides a method for synthesizing 1, 2-bis (4-vinyl phenyl) ethane, which comprises the following steps: adding a first solvent, methyl triphenyl phosphine halide and strong alkali into a reaction flask, and uniformly stirring to obtain a first mixed solution; heating the first mixed solution and carrying out reflux reaction for 1 hour; dropwise adding a 1, 2-bis (p-formaldehyde phenyl) ethane solution until the reflux reaction is finished to obtain a second mixed solution; reducing the temperature of the second mixed solution to room temperature, and adjusting the pH value of the second mixed solution to obtain a first solution; layering the first solution, and taking an organic layer; adding a polymerization inhibitor into the organic layer to obtain a second solution; concentrating the second solution to obtain a 1, 2-bis (4-vinyl phenyl) ethane crude product; adding a poor solvent into the crude product, stirring and crystallizing; filtering the crystal to obtain a filter cake, adding a second solvent into the filter cake, and washing and drying the filter cake to obtain 1, 2-bis (4-vinyl phenyl) ethane; the method for synthesizing the BVPE is simple and low in raw material cost, and the synthesized BVPE is high in purity and free of product isomeride.

The invention discloses a catalyst for preparing propylene through propane dehydrogenation as well as preparation and application of the catalyst. The catalyst comprises a tin-containing spherical alumina carrier and noble metal Pt, and a preparation method of the tin-containing spherical alumina carrier comprises the following steps: mixing aluminum hydroxide sol with acidic silica sol, dropwise adding the obtained mixture into an oil-ammonia water-oil-water four-layer mixed column, molding, drying and roasting to obtain the tin-containing spherical alumina carrier; the oil-ammonia water-oil-water four-layer mixing column is sequentially provided with four layers from top to bottom, the first layer is a first oil layer, the second layer is an ammonia water layer, the third layer is a second oil layer, and the fourth layer is a tin-containing water layer. When the catalyst is applied to propane dehydrogenation propylene preparation reaction, the activity of the catalyst can be remarkably improved.

A device for preparing chemicals through waste plastic and crude oil mixed feeding grading gas-phase dehydrogenation cracking is composed of a waste plastic self-hot-melting dechlorination pretreatment subsystem, a waste plastic melting liquid and crude oil selective vaporization dehydrogenation cracking subsystem, a high-temperature cracked oil gas gas-phase catalytic cracking subsystem and a cracked oil gas fractionation and refining subsystem. A recycle oil pipeline and a cracking dry gas pipeline of the cracking oil-gas fractionation and refining subsystem are respectively connected to a high-temperature molten oil inlet and a feeding carrying gas inlet of the waste plastic self-heating melting dechlorination pretreatment subsystem, and a waste plastic molten liquid delivery pipeline of the waste plastic self-heating melting dechlorination pretreatment subsystem is connected to a crude oil feeding pipeline; a waste plastic and crude oil mixed feeding pipeline is connected into the waste plastic molten liquid and crude oil selective vaporization dehydrogenation cracking subsystem through an atomizing nozzle, selective vaporization dehydrogenation cracking and gas-phase catalytic cracking are sequentially completed in a grading mode, and then the cracked oil gas fractionation and refining subsystem produces triene tribenzene, high-temperature recycle oil and cracked dry gas.

The invention relates to the technical field of ZSM-5 molecular sieve preparation, and provides a high-crystallinity aluminum-rich ZSM-5 molecular sieve as well as a preparation method and application thereof. According to the preparation method of the high-crystallinity aluminum-rich ZSM-5 molecular sieve provided by the invention, after the second aluminum source is added, secondary crystallization is carried out, so that the skeleton composition control of the ZSM-5 molecular sieve is realized, the technical bottleneck that the high-crystallinity aluminum-rich ZSM-5 molecular sieve is difficult to directly synthesize is solved, the lower limit of a Si / Al specific phase region of an artificial in-situ synthesized molecular sieve is broken through, and the preparation method is simple and convenient. The method effectively controls crystal parameters, improves production efficiency and realizes precise construction of the high-crystallinity aluminum-rich ZSM-5 molecular sieve, so that the microporous crystallinity of the molecular sieve is enhanced, the acid distribution of the molecular sieve is optimized, the metastable state surface active acid center distribution of the molecular sieve is greatly enriched, and the molecular sieve has good aromatic hydrocarbon conversion performance.

Processes for preparing Compound I, and pharmaceutically acceptable salts and solvates thereof, pharmaceutically acceptable solid (e.g., crystalline or amorphous) forms of Compound I, pharmaceutical compositions comprising the same, methods of treating pain using the same, and methods for making the same are disclosed.

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 a method for synthesizing 1, 2-allene ketone, and discloses a method for synthesizing 1, 2-allene ketone by taking eneyne, 1, 4-dihydropyridine and benzoyl fluoride as substrates, 2, 4, 5, 6-tetra (diphenylamino)-isophthalonitrile as a photocatalyst, 5, 6, 7, 8-tetrahydro-3-(2, 6-diisopropyl phenyl)-4H-cycloheptyl thiazole perchlorate as N-heterocyclic carbene, cesium carbonate as alkali and acetonitrile as a solvent through a one-pot method. And reacting at room temperature for 4 hours under visible light of 12W and 460nm LED blue light to obtain allene ketone. The reaction conditions are mild, and the method has good functional group tolerance.

The invention belongs to the technical field of petrochemical engineering, and particularly relates to a thermal auxiliary material for promoting alkane dehydrogenation reaction efficiency and a preparation method and application thereof. The auxiliary material is composed of a heating main body, a heat storage carrier, a stabilizing auxiliary agent and a carrier auxiliary agent. Wherein the component of the heating main body is CuO; the component of the heat storage carrier is CaO-Al2O3 composite oxide; the stabilizing auxiliary agent is one or more of Cr2O3, La2O3, CeO2 and ZrO2; and the carrier auxiliary agent is one or more of MgO, BaO, NiO and Fe2O3. The thermal auxiliary material with high mechanical strength, high heat transfer performance and high stability is synthesized through the steps of coprecipitation reaction, high-temperature hydrothermal reaction, high-temperature calcination, vacuum impregnation, ultrasonic oscillation and the like; when the material is applied to an alkane dehydrogenation olefin preparation device, alkane conversion rate and olefin selectivity can be improved, the service life of a catalyst can be prolonged, and energy consumption of the device can be reduced.

The invention relates to the technical field of catalyst carriers, and discloses reticular porous spherical aluminum oxide as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) mixing an aluminum source, acid, a pore-forming agent, a surfactant and water to obtain pseudo sol; (2) performing ultrasonic treatment and oil ammonia column forming treatment on the pseudo sol obtained in the step (1) to obtain gamma-Al2O3 spherical gel beads; and (3) aging, washing, drying and calcining the gamma-Al2O3 spherical gel beads obtained in the step (2) to obtain the reticular porous spherical alumina. The spherical aluminum oxide prepared by the method has abundant communicated reticular pore channels, is obviously distributed in mesopore and macropore ranges, is beneficial to obviously improving dispersion and loading of a catalyst in an aluminum oxide carrier and improving the performance of petroleum reforming and propane dehydrogenation, and has industrial production utilization value and commercial value.

A Liquid Organic Hydrogen Carrier (LOHC) dehydrogenation system is described, capable of meeting time-variable hydrogen demands with short dynamics while always ensuring a high degree of dehydrogenation under all operating conditions. The system comprises one or more reactors comprising an LOHC vessel and a recirculation circuit comprising a recirculation pump, a preheater capable of supplying the reaction heat as sensible heat, and a cartridge containing the solid catalyst.

The invention relates to the technical field of catalysts, in particular to a dehydrogenation catalyst precursor, a dehydrogenation catalyst and a preparation method and application of the dehydrogenation catalyst precursor. According to the dehydrogenation catalyst precursor, a sulfur-modified magnesium-aluminum mixed oxide is used as a carrier, and a Pt metal cluster is used as an active center; wherein the carrier is a mixed-state metal oxide with a layered hydrotalcite structure, a spinel structure and a near-crystalline synergistic structure. A magnesium-aluminum mixed oxide can be prepared by introducing a precursor of alkali metal magnesium into an aluminum oxide precursor, a layered structure or a spinel structure similar to hydrotalcite can be formed by regulating and controlling the calcination temperature, and by combining carrier surface regulation and control modification, the capability of regulating and controlling the interaction between metal and a carrier can be improved, and the performance of the catalyst is improved. Therefore, the active center of the cluster is maintained, and the acid-base property of the surface of the carrier is effectively modulated, so that carbon deposit is reduced, and the activity and stability of the catalyst are improved.

The invention provides a synthetic method of high-purity p-methylstyrene. The method comprises the following steps: carrying out alkylation on toluene and catalytic dry gas in a modified ZSM-5 catalyst to generate methyl-ethylbenzene, carrying out adsorption separation on the methyl-ethylbenzene to obtain high-purity p-methyl-ethylbenzene, and carrying out high-temperature dehydrogenation on the p-methyl-ethylbenzene in the presence of an iron-based catalyst to obtain the high-purity p-methyl styrene. According to the method, based on the synergistic effect of a preparation process and an alkylation reaction catalyst, the para-selectivity of the alkylation reaction catalyst is strictly controlled, so that the selectivity of the catalyst is ensured, the service life of the catalyst is greatly prolonged, and furthermore, a simulated moving bed is utilized to adsorb and separate methyl ethylbenzene isomers, separate, purify and recycle; the raw material utilization rate and the product purity are improved, and the purity of the finally obtained p-methylstyrene is 99% or above.

The invention relates to the field of plastic degradation, in particular to a polystyrene hydrocracking method. Comprising the following steps: respectively adding a metal sulfide catalyst and polystyrene into a suspended bed reactor, sealing the suspended bed reactor, introducing hydrogen with a certain pressure, and starting a reaction; the polystyrene hydrocracking method provided by the invention adopts the non-noble metal catalyst, and is more economical. The problem that polystyrene is easy to generate hydrogen by self-cyclization and polycyclic aromatic hydrocarbon is formed is solved; meanwhile, the problems of benzene ring hydrogenation and aromatic hydrocarbon selectivity reduction are solved, and the yield of monocyclic aromatic hydrocarbon is up to 90%. The method can realize complete cracking of waste polystyrene, and has good economic benefits.

The invention discloses a catalyst for catalyzing ethane to prepare ethylene or an oxygen-containing compound as well as a preparation method and application of the catalyst, and belongs to the field of catalysts. On the basis of ERB-1 and MCM-22, a large number of hydroxyl structures are formed through post-treatment of nitric acid or ammonium nitrate; a titanium source and molecular sieve silicon hydroxyl are subjected to a dehydrohalogenation reaction in a titanium halide gas form to form a Ti-O-Si bond, so that titanium successfully enters a molecular sieve framework and is uniformly distributed. Au or Pd is anchored by a framework Ti, Au or Pd is loaded by using a deposition-precipitation method, and the introduced Ti species can provide a better environment for further dispersing Au or Pd by changing isoelectric points on the surface of a molecular sieve carrier, so that the size of Au or Pd nanoparticles is controlled; secondly, due to the high specific surface area of the MWW molecular sieve, the gold precursor can be effectively dispersed, and agglomeration is inhibited; compared with an MWW molecular sieve of pure Si, Au or Pd nanoparticles can be dispersed and anchored by introducing a framework Ti, so that an Au and Pd-based catalyst which is about 2nm in size and good in dispersion is prepared.

The invention belongs to the technical field of chemical catalysis and chemical engineering, and discloses an oxygen carrier for preparing ethylene through oxidative dehydrogenation of chemical chain ethane as well as a preparation method and application of the oxygen carrier. Comprising a main component CeO2 and loading components V and Ru, specifically, the V and the Ru are loaded on the CeO2 in a step-by-step impregnation mode, and according to the mass percent of the CeO2, the Ru accounts for 2.00%, and the V accounts for 1.00%-5.00%. The key problems that a traditional ethane dehydrogenation technology is high in dependence on precious metal, prone to sintering at high temperature, frequent in regeneration and the like are solved, and an innovative solution is provided for low-carbon efficient ethylene production.

Transalkylation processes using catalysts comprising three dimensional 12 membered ring zeolites with a combination of small and large pores are described. These catalysts have increased conversion of alkylphenols to phenol, cresols, and alkylbenzenes from coal-derived liquid streams compared to catalysts consisting of HZSM-5 zeolite.

The invention belongs to the technical field of catalysis, and discloses a high-density long-chain alkane dehydrogenation catalyst and a preparation method thereof. The invention relates to a high-density long-chain alkane dehydrogenation catalyst, which is a composition of Pt, Sn, Ni, Fe and alkali metal or oxide thereof loaded by using mesoporous and microporous alumina as a carrier. The catalyst is mainly applied to the reaction process of preparing monoolefine through dehydrogenation of long-chain n-alkanes (C10-C13), the catalyst uses a ball-forming high-density carrier, the preparation process is safer and more environment-friendly, the dehydrogenation service life of the catalyst is prolonged, and the dehydrogenation stability is improved by 15-30%.

The invention relates to Bayer stone as well as a preparation method and application thereof, and belongs to the technical field of preparation of aluminum oxide or aluminum oxide precursor materials. The method comprises the following steps: mixing a Bayer stone seed crystal with an acidic aluminum source to obtain a first mixed solution; carrying out a neutralization reaction on the first mixed solution and sodium metaaluminate, and controlling the end point pH of the neutralization reaction to generate Alx (H2O) y (OH) mn < + > small clusters, so as to obtain a second mixed solution; and aging the second mixed solution at a set temperature, so that the Alx (H2O) y (OH) mn < + > small clusters are converted into a Bayer stone phase, and Bayer stone is obtained. The Bayer stone prepared by the invention meets the following indexes: the specific surface area is 325.3 m < 2 > / g to 382.3 m < 2 > / g, and the crystalline phase weight of the Bayer stone is 91.2 to 97.2 percent.

The invention discloses a high-selectivity catalyst. The catalyst is prepared from the following raw materials: a phosphine-containing ligand, a transition metal compound and an organic solvent, the structural formula of the phosphine-containing ligand is shown in the following formula: # imgabs0 #, wherein n is an integer in the range of 2-10; r1, R2 and R3 are the same or different, and R1, R2 and R3 are selected from one or a combination of more of C2-C9 alkyl, aryl, substituted alkyl and substituted aryl. The chromium catalyst containing the phosphorus ligand and the organic aluminum compound are adopted as a double-catalysis system for ethylene polymerization, ethylene oligomerization can be achieved, high selectivity to 1-hexene and 1-octene is achieved, and the catalytic activity is high. A double-center catalytic system is adopted, on the basis of ensuring catalytic activity, generation of solid polymers is reduced, scaling of equipment and pipelines in the production process is avoided, and long-term continuous production is achieved.

The invention discloses an alumina-loaded molecular alkane dehydrogenation catalyst and a preparation method and application thereof. The preparation method comprises the following steps: (1) carrying out modification treatment on alumina balls; and (2) adding the modified alumina balls into a dissolved solution of a molecular catalyst, stirring, reacting until the supernatant is colorless, filtering, and drying to obtain the alumina-loaded molecular alkane dehydrogenation catalyst. The catalyst provided by the invention is used in a process for preparing olefin through dehydrogenation of straight-chain alkane, the alkane conversion rate can reach 21% or above, the catalyst is high in catalytic efficiency, good in selectivity and easy to recover, and the activity of the recovered catalyst is still high.

The invention discloses a metal self-dispersed low-carbon alkane dehydrogenation catalyst as well as a preparation method and application thereof. The catalyst is composed of a molecular sieve carrier, metal particles of main active components Ru, Rh, Pd, Ir, Pt and Au, auxiliary components Fe, Co, Ni, Cu, Zn, Ga, In, Ge, Sn, Mn, Zr, V, Cr, Ti, Nb, Mo, Y, W, Pb, Sc, Bi, Sb, La and Ce, and alkali metal components Na, Mg, K, Ca and Cs. Firstly, the synthesized molecular sieve is subjected to high-temperature activation heat treatment, so that rich defect sites are generated; and mixing the activated molecular sieve with metal particles, and finally carrying out high-temperature treatment on the mixture in an oxygen atmosphere to prepare the stable molecular sieve loaded metal cluster. The obtained catalyst shows excellent catalytic activity and regeneration performance. The active metal particles are used as raw materials, the step of converting metal particle powder into salt is reduced, a physical mixing method is adopted, the preparation process of the catalyst is simpler, and the economic cost is lower.

A method for producing hydrocarbons includes subjecting a first feed stream to steam cracking to obtain a first product stream, and subjecting an ethane-containing second feed stream to oxidative dehydrogenation to obtain a second product stream. A portion of the first product stream is subjected to a deethanization or a depropanization separately from the second product to obtain a lighter fraction and a heavier fraction. A demethanization feed stream is formed by combining at least a portion of the lighter fraction and at least a portion of the second product stream and is subjected at least in part to demethanization. Partial oxygen removal is carried out during the formation of the demethanization feed stream. The oxygen removal is carried out downstream of the combining step.

The invention belongs to the technical field of solid waste utilization, and particularly relates to a modified ZSM-5 molecular sieve catalyst and a preparation method and application thereof. The catalyst comprises a ZSM-5 molecular sieve and an active component, wherein the active component is loaded on the internal pore channel and the surface of the ZSM-5 molecular sieve; the active component comprises one or more of Zn, Fe, Ni, Co, Mo and Zr. By adjusting the loading capacity of the active components and the acidity of the catalyst and adjusting the interaction among the components of the catalyst, the high-density polyethylene plastic is used as a raw material, and the catalyst is simple in structure, single in element, free of oxygen element and low in by-product content; the modified ZSM-5 molecular sieve catalyst is simple in preparation process and low in production cost, and the catalyst takes high-density polyethylene plastic as a raw material, so that the yield of MAHs prepared by directional pyrolysis of the high-density polyethylene plastic as the raw material and the stability of the catalyst are effectively improved.

The present invention relates to the technical field of dehydrogenation of low-carbon alkanes, provides a method and system for dehydrogenation of a low-carbon alkane, and solves the problem in the prior art that the service life of catalysts and the yield of low-carbon olefins are affected by ununiform temperature distributions and temperature drops across catalyst beds. The method comprises: introducing a heated process gas and a low-carbon alkane into a reactor; the process gas and the low-carbon alkane making contact with and reacting with a dehydrogenation catalyst, a thermal coupling aid, inert alumina balls, and inert alumina ceramic balls in the reactor; and separating, by a separation system, a low-carbon olefin, a hydrogen-rich gas, a fuel gas, and C4 and C4+ from a reaction gas generated by the reaction, and introducing the unconverted low-carbon alkane back to the reactor for further reaction. The reactor is filled with the dehydrogenation catalyst, the thermal coupling aid, the inert alumina balls, and the inert alumina ceramic balls according to a certain volume ratio, thereby improving the temperature distribution across a fixed bed reactor catalyst bed, reducing the reaction and regeneration severity, and improving the product yield.

The utility model discloses a cyclohexane dehydrogenation device, which is characterized in that raw materials cyclohexane and hydrogen are jointly sent to a raw material preheater for preheating, then are heated in a raw material heater and then enter a dehydrogenation reactor, a dehydrogenation product is cooled by an outlet cooler, and the cooled product is subjected to gas-liquid separation by a first gas-liquid separation tank; the gas enters the hydrogen compressor to be pressurized, then is cooled and then enters the second gas-liquid separation tank to be separated again, one part of the gas separated by the second gas-liquid separation tank returns to the hydrogen raw material inlet, and the other part of the gas enters the hydrogen impurity removal and purification device to be purified and then is subjected to hydrogen energy recycling; liquid separated by the second gas-liquid separation tank returns to the first gas-liquid separation tank, and a liquid phase outlet is connected with a benzene storage tank through a pump and a pipeline. The by-product cyclohexane in the cyclohexanol production process is completely converted into benzene, the benzene is combined with an existing device and directly enters an existing system, and the advantage that benzene refining separation is not needed is embodied.

The invention discloses a supported platinum-nickel alloy catalyst and a preparation method and application thereof, and belongs to the technical field of catalysis. The preparation method of the supported platinum-nickel alloy catalyst comprises the following steps: mixing a platinum source, a nickel source and an organic ligand in an organic solvent, stirring, filtering, washing and drying to obtain a platinum-nickel complex; dispersing the platinum-nickel complex and the nitrogen-doped porous carbon in an organic solvent, and performing ultrasonic treatment, centrifugation and drying to obtain a supported platinum-nickel catalyst precursor; and carrying out reduction annealing treatment on the supported platinum-nickel catalyst precursor in an argon atmosphere, and cooling to obtain the platinum-nickel alloy catalyst. The supported platinum-nickel alloy catalyst provided by the invention can be applied to deuteration reaction of polycyclic aromatic hydrocarbon compounds, is high in catalytic activity and few in side reaction, and has a good industrial application prospect.

The invention belongs to the technical field of alkane processing, and particularly relates to a process for preparing isopentene by dehydrogenation of isopentane, a catalyst and a tert-amyl alcohol preparation process. The process for preparing isopentene by dehydrogenation of isopentane comprises an isopentane dehydrogenation device and an isopentene separation device, in the isopentane dehydrogenation device, a dehydrogenation reactor is a fixed bed adiabatic reactor and is filled with a Pt-Sn-K / alumina type alkane dehydrogenation catalyst, the catalyst has hydromethanation performance under the CO2-containing dehydrogenation reaction condition, and the arrangement and operation of a dehydrogenation reactor group comprise a mode A, a mode B or a mode C; the isopentene separation device comprises a cooling separation system, a pressure swing adsorption separation system and an optional rectification system. The tert-amyl alcohol is further prepared from isoamylene under the conditions of a fixed bed hydration reactor, ethylene glycol monobutyl ether and other solvents, and the tert-amyl alcohol product is obtained through separation. The process is superior to the prior art on the whole, and has certain application prospects.

The invention discloses a continuous method for preparing 4-methyl-1-pentene through propylene dimerization and the obtained 4-methyl-1-pentene. The continuous method for preparing the 4-methyl-1-pentene through propylene dimerization comprises the steps that components containing propylene and a catalyst react in a reactor in the presence of a solvent, the product obtained after the reaction is separated, and then the 4-methyl-1-pentene is obtained, and the reactor comprises a first solid-liquid reaction kettle and a second solid-liquid reaction kettle. According to the invention, the continuous propylene dimerization reaction is realized, the blank of the domestic production technology for preparing 4-methyl-1-pentene by propylene dimerization is hopefully filled, sufficient raw materials are provided for the production of PMP, the current situation that the PMP completely depends on import in China is broken through, and the method has great significance.