598 results about "Cracking" patented technology

The invention provides a deep natural gas formation cause identification and quantitative evaluation method combined with methane cluster isotope composition, and belongs to the technical field of oil-gas exploration. Based on a method of combining methane cluster isotope values (delta13CH3D and delta12CH2D2) with stable hydrocarbon isotope values (delta13CCH4 and deltaDCH4), the relative contribution of each end member of an inorganic cause and a thermal cause to deep natural gas accumulation is quantitatively analyzed according to the cluster isotope values of two methane sources, namely Fischer-Tropsch inorganic synthesis and organic matter thermal cracking. According to the method, the multi-solution limitation caused by the fact that a traditional method only depends on the methane monomer isotope is overcome, the accuracy of deep natural gas cause type judgment is remarkably improved through the methane cluster isotope, and accurate quantitative evaluation of the proportion of different cause components in the mixed-source natural gas is achieved; and a more reliable basis is provided for exploration and development of deep natural gas resources.

The invention relates to the technical field of coal bed gas development and gas extraction, in particular to an electrodialysis-liquid CO2 time sequence synergistic anti-reflection method and system. Comprising an electrodialysis pretreatment stage, a CO2 synergetic permeability increasing stage and a process regulation and energy recovery stage, a mixed solution is injected into a coal seam in a pulse injection mode, and energy recovery is conducted through pipeline fluid pressure in the injection stopping period. According to the technical scheme, through multi-stage cooperation of electrodialysis pretreatment, CO2 phase change fracturing and pulse consolidation and regulation, accurate transformation of the coal seam low-permeability area is achieved. According to the scheme, electrodialysis is utilized to drive an acidic working solution to target and migrate to a difficult-to-permeate area, mineral substances are dissolved, and pores are expanded; then, high-energy expansion stress is generated through liquid CO2 phase change, and a through fracture network is formed; and finally, a pulse injection and energy recovery mechanism is adopted, fracture closing is restrained, system energy consumption is reduced, and therefore the coal seam breathability and the gas extraction efficiency are integrally improved.

The invention relates to a method for decoupling organic matter primary-secondary cracking hydrocarbon generation conversion rate based on a gold tube hydrocarbon generation thermal simulation experiment. The method comprises the following steps: step 1, acquiring kerogen gold tube hydrocarbon generation thermal simulation experiment data; step 2, parametric modeling of the kerogen hydrocarbon generation process; step 3, constructing a least square target model under a multi-constraint condition; step 4, performing nonlinear least square optimization solution under the constraint condition; and 5, calculating the hydrocarbon generation conversion rate. According to the method, conversion rate calculation is carried out on the cumulant of each hydrocarbon generation process obtained through decoupling, the conversion rate evolution rule of the kerogen oil generation, gas generation, crude oil cracking gas generation, non-reactive carbon formation and other processes along with maturity change in the crude oil cracking process can be obtained, and a quantitative basis is provided for refined hydrocarbon generation evaluation.

The invention relates to a method for decoupling organic matter primary-secondary cracking hydrocarbon generation conversion rate based on gold tube hydrocarbon generation thermal simulation-solid product pyrolysis experiment. The method comprises the following steps: step 1, kerogen gold tube hydrocarbon generation simulation and solid product rock pyrolysis experiment data acquisition; step 2, parametric modeling of the kerogen hydrocarbon generation process; step 3, constructing a least square model of multi-source experimental information collaborative constraint; 4, carrying out optimization solution under a multi-source experiment information collaborative constraint condition; and 5, calculating the hydrocarbon generation conversion rate. According to the method, conversion rate evolution characteristics of each hydrocarbon generation process are quantitatively represented, conversion rate calculation is performed on cumulant of each hydrocarbon generation process obtained through decoupling, and conversion rate evolution rules of kerogen oil generation, kerogen gas generation, crude oil cracking gas generation, non-reactive carbon formation and other processes along with maturity changes in the crude oil cracking process can be obtained; and a quantitative basis is provided for refined hydrocarbon generation evaluation.

The present application provides a nickel-based composite catalyst with core-shell structure, a preparation method and use thereof, the nickel-based composite catalyst with core-shell structure comprises a Ni@ZSM-5@S-1 core-shell structure and an alumina carrier, the Ni@ZSM-5@S-1 core-shell structure comprises a Ni@ZSM-5 core layer and a S-1 molecular sieve nanolayer coated outside the Ni@ZSM-5 core layer. The catalyst provided by the present application is used in the reaction of preparing chlorosilane monomer by directional catalytic cracking of organic silicon high-boiling matter, the cracking rate of high-boiling matter is more than 95%, and the selectivity of chlorosilane monomer is more than 95%.

A hybrid catalyst for simultaneous dehalogenation and cracking of plastic derived oil includes a plurality of composite particles, wherein each of the composite particles includes red mud particles and beta zeolite particles. A process for upgrading plastic derived oil includes contacting the plastic derived oil with the hybrid catalyst. A system for upgrading plastic derived oil includes an FCC reactor containing the hybrid catalyst.

The application provides a continuous hydrogenation-isomerization method capable of meeting the treatment requirements of biological oils, especially waste oils, using a homogeneous hydrogenation process with strong adaptability to raw materials as a raw material pretreatment process, and matching a high-activity nanometer transition metal sulfide catalyst. On this basis, a catalytic distillation process is used for selective cracking of long-chain alkanes to improve the yield of medium and long-chain alkanes; an ultramicro flow hydrogen gas mixer and a reduced non-noble metal hydrogenation-isomerization catalyst are used to reduce the hydrogen / oil ratio and the energy consumption of the circulating hydrogen system, and to reduce the production cost of the catalyst, so as to finally realize efficient and low-carbon conversion of waste oils, and low-cost and high-selectivity preparation of biological aviation kerosene.

The invention discloses a cascade energy supply and green hydrogen coupling biomass all-carbon directional conversion synthesis gas system and method, and belongs to the technical field of biomass energy conversion. The system comprises a first-stage gasification furnace, a second-stage gasification furnace, a gas-solid separator, an alkane reforming device, a reverse water-gas shift device and a water electrolysis device. The method comprises the following steps: pyrolyzing a biomass raw material and a catalyst in a primary gasifier (500-700 DEG C) to generate semicoke and tar-containing fuel gas; carrying out catalytic co-gasification on the semicoke and tar-containing fuel gas in a secondary gasifier (800-900 DEG C), and realizing tar cracking and CH4 reforming by using a catalyst to obtain crude synthesis gas; after being subjected to high-temperature dust removal, the crude synthesis gas sequentially passes through a self-heating alkane reforming device (CH4lt; 1%) and a reverse water-gas shift device, and finally synthesis gas with the H2 / CO ratio of 2: 1 is produced, so that the chemical application requirements of methanol, Fischer-Tropsch synthesis and the like are completely met, the high energy consumption bottleneck of a traditional process is broken, and full-life-cycle negative carbon emission is achieved.

A process includes contacting one or more bio feedstocks and one or more waste plastic feedstocks with a deactivated cracking catalyst comprising a phosphorus-containing ZSM-5 catalyst at catalytic cracking conditions to obtain a product stream containing hydrocarbons, and separating at least one hydrocarbon fraction from the product stream, wherein the deactivated cracking catalyst contains at least one metal contaminant.

The invention discloses a preparation method of a Sn-Bi-Ni-Cu quaternary liquid alloy methane cracking catalyst, production raw materials comprise composite melt metal and composite transition metal, and the mass ratio of the composite melt metal to the composite transition metal is 1: (0.3-1.2); the composite melt metal is composed of Sn and Bi according to the mass ratio of 1: (1.3-1.7); the composite transition metal is composed of Ni and Cu according to the mass ratio of 1: 0.15-1.2. The quaternary liquid alloy catalyst has the advantages that: 1) compared with the existing catalyst for hydrogen production by methane cracking, the quaternary liquid alloy catalyst provided by the invention can stably operate for more than 1000 hours in a range of normal pressure to 3MPa and air speed of 100-100mL. G <-1 >. H <-1 >, the active phase retention rate is more than 95%, and the quaternary liquid alloy catalyst is especially suitable for alkane pyrolysis hydrogen production, CO2 hydrogenation and easy carbon deposition reaction systems, and has a wide application prospect; a new material design thought and an engineering implementation scheme are provided for the field of liquid metal high-temperature catalysis; and 2) experiments show that the quaternary liquid alloy catalyst prepared by the method provided by the invention can significantly improve the carbon sequestration rate and the hydrogen yield.

According to the nickel-based catalyst and the preparation method and application thereof, through Ga modification, the methane cracking depth can be reduced, and then carbon deposition is effectively inhibited; ceO2 oxygen vacancies can effectively activate CO2, the generated intermediate oxygen species O further reacts with deposited carbon so as to achieve the purpose of carbon cleaning, the GaxNi / CeO2 catalyst is prepared by adopting a urea homogeneous precipitation method, 1000-hour long-term stable catalytic conversion of the nickel-based catalyst in a carbon dioxide methane dry reforming reaction is achieved, and the catalyst has the advantages of simple process, low cost and high efficiency. The nickel-based catalyst prepared by the method can keep good catalytic stability.

The invention belongs to the field of biofuel preparation through grease hydrogenation, and provides a catalyst for biofuel preparation through waste grease one-step hydrogenation and a preparation method of the catalyst. The catalyst is a non-supported NixMoyWz-kHY catalyst, and the preparation method of the catalyst comprises the following steps: uniformly mixing a nickel source, a molybdenum source and a tungsten source according to a certain proportion, adding deionized water and a reaction aid ethylene glycol, dissolving, heating, stirring, adding an ammonia water-ethanolamine mixed solution, complexing, steaming until the pH value of the solution is 7-8, and filtering to obtain the catalyst. And adding a certain amount of HY molecular sieve powder, methyl cellulose (MC) and citric acid into the solution, filtering the reaction solution, drying the filter cake at 120 DEG C, performing extrusion molding, and roasting to obtain the catalyst. The catalyst provided by the invention effectively solves the problems of high oxygen content, difficulty in deep isomerization and the like in the waste oil and fat, has the functions of hydrodeoxygenation, cracking and isomerization at the same time, and realizes one-step conversion of the waste oil and fat into biological aviation kerosene and biodiesel. Besides, the non-supported catalyst adopted by the invention has high-activity center density, the problems of aging and shedding of the carrier are not needed to be worried about, and the preparation method of the catalyst is simple, environment-friendly and pollution-free, and meets the requirements of industrial preparation.

The present application relates to the field of catalytic cracking of hydrocarbons, in particular to a silicon-aluminum molecular sieve catalyst, a preparation method and application thereof, and aims to provide a method for synthesizing a silicon-aluminum molecular sieve by mechanical ball milling, in which full-silicon molecular sieves are synthesized, and aluminum elements are selectively added into the full-silicon molecular sieves, so that the synthesized silicon-aluminum molecular sieve has appropriate acidity and good pore structure, and the ball milling process can form more defects on the outer surface of the full-silicon molecular sieve, thereby increasing the positioning space of aluminum.

The invention discloses a biomass coke-based multifunctional coal pyrolysis catalyst and a preparation method thereof, and belongs to the technical field of preparation of coal pyrolysis catalysts. The preparation method comprises the steps of raw material pretreatment, pyrolysis pore-forming, activation synergism, metal loading, citric acid staged removal and atmosphere replacement, and specifically comprises the following steps: firstly, compounding, crushing and drying straw and wood biomass, and performing pyrolysis in an inert atmosphere to prepare a biomass coke precursor; then carrying out alkali metal activation, acid pickling and water washing to prepare an activated carrier with a high specific surface area; then, citric acid is used for assisting in loading a mixed solution of nickel nitrate and ferric nitrate, citric acid is removed by stages through air low-temperature pre-removal and inert gas medium-temperature deep removal, and the valence state of the metal active component is synchronously regulated and controlled. The prepared catalyst is low in citric acid residual quantity, can realize hydrodeoxygenation, tar cracking and anti-carbon deposition functions, is excellent in catalytic performance and low in cost, meets the requirements of low metamorphic coal pyrolysis volatile component upgrading, and is easy to industrially apply.

The present invention relates to the field of dewaxing of hydrocarbon feeds. More in particular, it relates to the use of alkaline-treated mesoporous zeolites and catalysts encompassing the same for the dewaxing of hydrocarbon feeds. It was found that the zeolites and catalysts of the present invention can significantly reduce cracking of the hydrocarbon feed, and accordingly significantly reduce liquid hydrocarbon feed loss during processes such as dewaxing.

The invention relates to a method for obtaining hydrocarbon fluids from a fossil heavy hydrocarbon feedstock and a tyre oil, the method comprising: a) a step of providing a tyre oil or at least one fraction of a tyre oil; b) a step of thermal cracking in a visbreaking unit or a coking unit, during which the fossil heavy hydrocarbon feedstock, or a fraction of the heavy fraction of the fossil heavy hydrocarbon feedstock, is subjected to thermal cracking under visbreaking or coking conditions in the presence of tyre oil or the at least one tyre-oil fraction provided in step a), thereby producing an at least partially cracked effluent and a liquid or solid residue; c) a fractionation step in which the effluent from step b) is fractionated into at least one liquid hydrocarbon fraction.

The present invention provides a hydrocracking catalyst and a preparation method and application thereof, the catalyst comprises a carrier and hydrogenation active metal components, the carrier comprises alumina and carbon, and the hydrogenation active metal components comprise one or more of VIB group metals and one or more of VIII group metals in the periodic table of elements; the total acid content of the catalyst is 0.45-0.80 mmol / g, the dispersity of the VIB group metal is not lower than 0.08, and the dispersity of the VIII group metal is not lower than 0.04; preferably, the total acid content of the catalyst is 0.50-0.70 mmol / g, the dispersity of the VIB group metal is not lower than 0.09, and the dispersity of the VIII group metal is not lower than 0.05. According to the preparation method, an aluminum oxide-carbon composite material is synthesized in situ, then the composite material is subjected to surface modification treatment, and then an active metal component is introduced, so that the obtained hydrocracking catalyst has proper acidity and good metal dispersibility, and when the hydrocracking catalyst is applied to a hydrocracking process of waste plastics, moderate cracking hydrogenation of the waste plastics can be realized; the yield of a liquid phase product is effectively improved.

This invention relates to the field of catalysts, and discloses a gas-phase cracking catalyst, its preparation method, and its application. The catalyst comprises, by weight, 1.5-20 parts of an active component and 80-98.5 parts of a support; the active component is selected from one or more elements of Group IIB, Group IIIA, Group IVA, and Group VA; the active component exists in elemental and / or oxide form; the support is selected from one or more molecular sieves of type ZSM-5, Y-type, and X-type. The catalyst of this invention exhibits high catalytic activity, few byproducts, and high stability in the gas-phase cracking of 2,2-dimethoxypropane to synthesize 2-methoxypropylene, showing promising application prospects.

A recycle content oxo glycol and method of making a recycle content oxo glycol wherein the recycle content is derived directly or indirectly from the cracking of recycle content pyrolysis oil and / or gas. The cracking of the pyrolysis oil can be conducted in a gas furnace or a split furnace.

The invention provides a carbon emission accounting method in an agricultural waste gas-carbon co-production process, and belongs to the technical field of agricultural waste gas-carbon co-production. Establishing a carbon mass conservation mechanism equation based on the feeding carbon content, the gas production carbon content, the tar carbon content and the residue carbon content to describe a carbon element distribution rule, and intelligently predicting the tar generation amount and the methane conversion rate by utilizing a prediction model integrated temperature calibration mechanism; a tar pyrolysis kinetic equation is adopted to calculate the generation amount of carbon dioxide and light alkane in the tar secondary pyrolysis process, a carbon emission factor database covering different raw material types and operation conditions is established, and finally the total carbon emission is calculated through a carbon emission accounting comprehensive algorithm integration mechanism calculation, kinetic modeling and an intelligent prediction result. The technical problem of insufficient carbon emission accounting precision in the agricultural waste gasification process is solved.

The invention relates to the technical field of hydrogen production through methane cracking, in particular to a sea urchin-shaped composite catalyst, a preparation method thereof and application of the sea urchin-shaped composite catalyst in hydrogen production through methane cracking. The obtained sea-urchin-shaped composite catalyst has a sea-urchin-shaped appearance, can efficiently catalyze methane cracking to produce hydrogen, simultaneously captures CO2 produced by vapour gasification carbon deposition in a catalyst regeneration process to generate CaCO3, promotes the gasification hydrogen production of the carbon deposition and strengthens the removal effect of the carbon deposition, and the generated CaCO3 can also be converted into CO in situ, so that the catalyst has a good application prospect. The obtained catalyst has good anti-sintering performance and excellent recycling performance.

The invention provides a preparation method for improving the solid content of a glue solution in the production process of a catalytic cracking catalyst, and belongs to the technical field of catalytic cracking catalyst preparation. According to the method, the mixing sequence of a silicon source and an aluminum source is optimized, the pH value and temperature of a reaction system are controlled, and a composite dispersing aid is introduced, so that the problems of difficulty in subsequent catalyst forming, unstable activity and the like caused by low solid content of a glue solution in a traditional preparation process are solved. The method is characterized by comprising the steps of (1) preparing an aluminum source solution, (2) preparing a silicon source dispersion liquid and (3) preparing a glue solution through a mixed reaction, the solid content of the glue solution can be increased to 38-45%, the glue solution is good in dispersion uniformity and free of obvious agglomeration phenomenon, the abrasion index of the subsequently prepared catalytic cracking catalyst is reduced by 8-12%, the catalytic activity is improved by 5-8%, and the method is suitable for large-scale industrial production.

The invention provides an iron-pollution-resistant catalytic cracking catalyst and a preparation method thereof, and the iron-pollution-resistant catalytic cracking catalyst comprises the following raw materials: a mesoporous and macroporous material, a zinc-aluminum composite material and a molecular sieve, wherein the mesopore and macropore material comprises kaolin and first zinc salt loaded in pores of the kaolin; the zinc-aluminum composite material is obtained by performing solid-phase ball milling on pseudo-boehmite and second zinc salt. The catalytic cracking catalyst provided by the invention has abundant mesopore and macropore structures and excellent iron resistance.

The application relates to a method for decoupling primary-secondary cracking hydrocarbon generation conversion rates of organic matter based on a gold tube hydrocarbon generation thermal simulation-solid product pyrolysis experiment, which comprises the following steps: step 1, kerogen gold tube hydrocarbon generation simulation and solid product rock pyrolysis experiment data acquisition; step 2, parameterized modeling of the kerogen hydrocarbon generation process; step 3, construction of a least square model cooperatively constrained by multi-source experimental information; step 4, optimization solution under the cooperatively constrained condition of multi-source experimental information; and step 5, hydrocarbon generation conversion rate calculation. The application quantitatively characterizes the conversion rate evolution characteristics of each hydrocarbon generation process, and through conversion rate calculation on the cumulative amount of each hydrocarbon generation process obtained by decoupling, the conversion rate evolution law of the kerogen oil generation, gas generation and oil cracking process, the oil cracking gas formation and the unreactive carbon formation process with the change of the maturity can be obtained, and a quantitative basis for fine hydrocarbon generation evaluation is provided.

The present application relates to a kind of Y type molecular sieve catalytic material for improving gasoline yield and selectivity and its preparation method, Y type molecular sieve catalytic material is obtained by the hydrothermal crystallization of reactive microspheres containing zirconium, reactive microspheres containing zirconium contain 85-99.9 wt% alumina matrix and 0.1-15 wt% zirconium oxide, and the zirconium oxide contains tetragonal phase crystalline zirconium oxide.The Y type molecular sieve catalytic material of the present application has better strength and cracking effect, and the catalyst containing the Y type molecular sieve catalytic material of the present application can improve the selectivity and yield of catalytic cracking gasoline.

The application provides a ZSM-48 molecular sieve and a preparation method thereof, an isomerization dewaxing catalyst and a preparation method and application thereof, wherein the preparation method of the ZSM-48 molecular sieve comprises the following steps: uniformly mixing an aluminum source, a silicon source, an alkali source, a crystallization inducer, a template agent, deionized water, a pore-forming agent and a charge balancing agent, then sequentially pre-crystallizing the obtained gel solution at 70-90 DEG C for 2-6h, crystallizing at 120-140 DEG C for 2-6h, and crystallizing at 140-170 DEG C for 10-48h, washing, drying and calcining the crystallization product, mixing the obtained molecular sieve precursor with an ammonium salt, and then washing, drying and calcining to obtain the ZSM-48 molecular sieve. The carrier particle of the isomerization dewaxing catalyst comprises the ZSM-48 molecular sieve. The acid sites of the molecular sieve are uniformly distributed, the crystal grain size is small, and the total BET specific surface area is high. The isomerization dewaxing catalyst has high reaction efficiency and isomerization conversion rate and low cracking rate.

The present application relates to a kind of composite oxide carrier catalyst and its preparation method and application, belong to high polymer material cracking and catalyst technical field.The composite oxide carrier catalyst of the present application includes carrier and active metal, the component of carrier includes ZrO2 And Al2O3, wherein the mass ratio of ZrO2 And Al2O3 It is (0.5-5):1;Active metal is at least one of Ba, Pt, Cu, Zn, Co, Ni, and the mass of active metal is 0.5-10% of the mass of catalyst.The present application provides a kind of composite catalyst by optimizing the proportion of carrier and active metal, with high catalytic cracking polyethylene efficiency, high liquid alkane yield, and good catalytic efficiency, has higher application value in the field of high polymer material cracking, plastic recycling.

The invention relates to the technical field of new energy and mining and blasting, in particular to a preparation method of a biomass instantaneous cracking agent. The preparation method comprises the following steps: mixing biomass powder, pulverized coal, an oxidant, a catalyst and a release agent to obtain mixed powder; mixing the adhesive, the water and the preservative to prepare a glue solution; the glue solution and the mixed powder are kneaded, granulated and dried, and the biomass instantaneous cracking agent is obtained, the biomass powder accounts for 4-55 parts by mass, the pulverized coal accounts for 0-48 parts by mass, the oxidizing agent accounts for 0-45 parts by mass, the catalyst accounts for 0-20 parts by mass, the release agent accounts for 0-2.5 parts by mass, the adhesive accounts for 2-10 parts by mass, the preservative accounts for 0-0.15 part by mass, and the oxidizing agent and the catalyst are not 0 at the same time; the oxidizing agent is potassium peraluminate powder and / or ammonium perchlorate powder; the catalyst is potassium nitrate powder and / or sodium nitrate powder. The biomass instantaneous cracking agent prepared by the invention solves the problems of long stone cracking time, low efficiency and environmental pollution of the existing stone cracking agent.

The application provides a Ce / HZSM-5 catalyst and a preparation method and application thereof, wherein the mass fraction of Ce in the Ce / HZSM-5 catalyst is 1-2 wt% based on 100% of the mass of the Ce / HZSM-5 catalyst. The mass fraction of Ce in the Ce / HZSM-5 catalyst provided in the application is 1-2 wt%, and the Ce loaded on the HZSM-5 can not only adjust the acidity of the Ce / HZSM-5 catalyst, but also can avoid the accumulation of Ce in the zeolite channel of the HZSM-5, so as to reduce the pore volume and pore size of the Ce / HZSM-5 catalyst, so that the Ce / HZSM-5 catalyst has high activity and selectivity to hydrocarbons, and the conversion rate of oxygen-containing compounds in PET cracking oil is improved.

The invention relates to the field of fuel combustion, in particular to an experimental system and a measuring method for cooling and coking characteristics of high-temperature cracked hydrocarbon fuel, physical separation is realized by designing a high-temperature cracking section and a cooling and coking section, and the problem of experimental result mixing caused by coupling of the high-temperature cracking section and the cooling and coking section in a traditional experiment is effectively avoided. According to the separation design, coke generation characteristics in the cooling stage can be independently researched, and the device can flexibly simulate various high-temperature and cooling conditions in actual working conditions by accurately controlling experimental conditions such as the flow rate, the temperature and the pressure of the fuel / condensation medium, and is suitable for researching coking behaviors of various types of fuels.