1089 results about "Cracking" patented technology

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

A process for upgrading a plastic derived oil includes providing the plastic derived oil comprising hydrocarbons and greater than or equal to 100 ppmw halogen-containing compounds and contacting the plastic derived oil with an MMO catalyst in a first reactor at reaction conditions to remove halogens from the plastic derived oil to produce a first reactor effluent with less than 100 ppmw halogen-containing compounds. The process includes contacting the first reactor effluent with an adsorbent to produce a treated first reactor effluent, passing the treated first reactor effluent to a second reactor, and contacting the treated first reactor effluent with a cracking catalyst in the second reactor. Contacting with the cracking catalyst may cause hydrocarbons in the treated first reactor effluent to undergo catalytic cracking to produce a second reactor effluent comprising light olefins, naphtha range hydrocarbons, or combinations thereof.

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

The invention relates to the technical field of biomass energy conversion, in particular to a gradient catalytic biomass tar cracking reactor and a control method thereof.The gradient catalytic biomass tar cracking reactor comprises a multilevel component characterization module, a functional group reaction activity evaluation module, a multi-scale reaction network coupling module, an oxygen content gradient regulation module, a self-adaptive product directional regulation module and the like; the system is used for finely representing tar components, improving complicated composition understanding and processing capability, calculating a functional group reaction activity index, constructing a three-level reaction network, optimizing reaction path selectivity, and generating an oxygen content gradient index and a catalyst distribution scheme, so that gradient reduction of oxygen content and oriented conversion of products in a reactor are realized; the multi-section fixed bed reactor is designed, different catalysts are filled in each reaction area, the reaction requirements are met, the system intelligently regulates and controls reaction operation parameters, the biomass tar cracking efficiency and the product directionality are remarkably improved, and innovation and breakthrough are brought to the technical field of biomass energy conversion.

An article for joule heating is described, including a three-dimensional substrate on and / or in which a pyrolyzate of a phenolic resin or polymer forms an electrically conductive carbon network. Such articles may be incorporated in structured materials applications, which may include support, sorbent, and or catalyst components. Also described are methods of fabricating such articles and structured materials, and apparatus comprising same, and methods of use of such articles and structured materials and apparatus for conducting material transformation processes requiring input of heat for their performance, such as CO2 adsorption, methane pyrolysis for hydrogen and carbon production, hydrogen-assisted conversion of CO2 to hydrocarbons, including catalytic conversion of CO2 to olefins, catalytic conversion of CO2 to propane (liquefied petroleum gas), and catalytic conversion of CO2 to renewable natural gas, reverse water gas shift reaction, steam ethane cracking, propane cracking, steam methane reforming, and dry methane reforming.

The invention discloses a method for preparing fuel from waste polyolefin through noble-metal-free low-temperature aromatization, which comprises the following steps: in the atmosphere of synthesis gas, carrying out catalytic cracking on polyolefin serving as a raw material by adopting a binary mixed catalytic system to obtain aromatic hydrocarbon; the binary mixed catalytic system comprises Zr-ZnO and a molecular sieve; the catalytic cracking temperature is less than or equal to 300 DEG C. According to the low-temperature aromatization method disclosed by the invention, methanol is generated in situ through the synthesis gas, and the methanol and olefin generated by polyolefin cracking are subjected to Prins reaction, so that the aromatization reaction can be realized at the pyrolysis temperature far lower than that in the prior art, precious metals are not needed, the additional value and the application range of a plastic recovery product are greatly enhanced, and the method is suitable for industrial production. And the cost of the recovery process is reduced.

The invention discloses a Pt-loaded hierarchical pore HY molecular sieve double-effect catalyst and a preparation method and application thereof.The preparation method comprises the steps that firstly, an acid solution and an HY molecular sieve are mixed, heated and stirred, and the hierarchical pore HY molecular sieve is obtained; then, Pt salt is loaded on the hierarchical pore HY molecular sieve through an impregnation method, and the hierarchical pore HY molecular sieve is dried, calcined and then reduced. The concentration of the acid solution is not higher than 0.1 mol / L; the catalyst is used for hydrocracking of polyethylene or polypropylene. According to the Pt-loaded hierarchical pore HY molecular sieve double-effect catalyst disclosed by the invention, Pt atoms have excellent C-H bond activation capability, meanwhile, the hierarchical pore HY molecular sieve carrier has an open connection mesoporous structure and an acid site, and the mesoporous structure constructed by acid pickling and dealumination is beneficial to diffusion of a reaction intermediate and improvement of the yield of a liquid product; more orifice acid can be exposed by surface erosion, so that the initial cracking of reaction raw materials is facilitated, and the catalytic performance is improved.

The invention discloses a coal tar hydrogenation catalyst as well as a preparation method and application thereof. The catalyst comprises a carrier and an active metal component, wherein the carrier is a gallium modified silicon-aluminum carrier; in the gallium modified silicon-aluminum carrier, based on the mass of the gallium modified silicon-aluminum carrier, the mass content of gallium oxide is 2.0%-5.0%, the mass content of silicon dioxide is 20.0%-60.0%, and the mass content of aluminum oxide is 35.0%-78.0%; the active metal component comprises Mo and a group VIII metal element; the Mo comprises + 5 valence Mo; the group VIII metal element exists in the catalyst in the form of metal phosphide. The catalyst has high hydrogenation activity, appropriate cracking activity and good stability, and effectively improves the quality and yield of coal tar hydrogenation product oil.

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 belongs to the field of polycrystalline silicon preparation, and particularly relates to a technology and system for preparing monosilane through fixed bed catalytic cracking of polycrystalline silicon high-boiling residues, the system comprises a feeding unit, a reaction unit and a condensation recovery unit which are connected in sequence, the feeding unit comprises a storage tank, a feeding pump and a preheating mixer which are connected in sequence, and the reaction unit comprises a reaction unit and a condensation recovery unit which are connected in sequence. The preheating mixer is also connected with a hydrogen feeding pipeline, the reaction unit is a fixed bed catalytic reactor filled with a catalyst, and the condensation recovery unit comprises at least one stage of cooler and a recovery tank. By adopting the system, the process disclosed by the invention has the advantages of extremely simple process, high yield, capability of realizing long-term, continuous and stable production, environmental friendliness, easiness in material separation, high conversion rate, good target product selectivity and high trichlorosilane content in a final product.

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 discloses a cracking dechlorination catalyst as well as a preparation method and application thereof. The cracking dechlorination catalyst comprises zeolite, an adsorbent and a carrier, the zeolite is selected from at least one of an MFI structure, an FAU structure and an MEL structure; the adsorbent is selected from at least one of metal oxide and carbonate; and the carrier is selected from one of a carbon material and carbide. The invention provides a catalyst for one-step catalytic cracking-dechlorination of waste plastics, which can realize oil recovery and chlorine impurity removal in one step in catalytic cracking of chlorine-containing waste plastics.

The invention belongs to the technical field of waste plastic cracking, and particularly relates to a PVC cracking dechlorination method and a catalyst used in the method. The used catalyst is X / ZSM-5; and the mass of the active component X is 8-16 wt% of the ZSM-5 molecular sieve. And adding a ZSM-5 molecular sieve into the precursor X salt solution, heating in a water bath, stirring, carrying out rotary evaporation, drying and roasting to obtain the catalyst. In the PVC cracking dechlorination method, PVC is pretreated and then crushed into solid particles, the solid particles are put into a high-pressure feeding pipe, and a catalyst X / ZSM-5 is put into a fluidized bed; and after fluidizing the catalyst, blowing PVC into the reactor, and reacting in an inert gas atmosphere to obtain an oil product and olefin. According to the catalyst disclosed by the invention, the active components are in the pore channels and the outer surfaces of the molecular sieves, so that the preparation method is simple, HCl in high-temperature cracked oil gas can be fixed, the chlorine content in a gas-phase product and a liquid oil product can be reduced, the reaction time is short, the cost is low, the dechlorination process is strong, and the added value of the product is high.

A rotary bladed apparatus (100) for processing feedstocks in a process fluid is provided, said apparatus comprises means for adjusting position of a working blade cascade of the rotor (3) relative to stator components (2, 4) in a longitudinal direction of a rotor shaft (1). Adjustment is performed through axial displacement of the rotor (3) or, alternatively, through axial displacement of the reactor housing (22 A, 32A). A method for improving process efficiency and for regulating flow losses during processing of feedstocks in a process fluid, in particular, in off-design conditions in the bladed apparatus (100) is further provided. In embodiments, processing of feedstocks includes thermal- or thermochemical cracking of hydrocarbon-containing feedstock.

The invention discloses an ethanol-regulated layered metal oxide, a preparation method thereof and an application of the ethanol-regulated layered metal oxide in preparation of a single-walled carbon nanotube by catalytic cracking of methane, alkali liquor and soluble metal salt containing Fe, Mo, Mg and Al are dropwise added into an alkaline ethanol aqueous solution to form a precipitate, and the ethanol-regulated Fe-Mo / MgAl-LDOs catalyst is obtained after aging, drying and calcining. The catalyst is applied to methane catalytic cracking to prepare the single-walled carbon nanotube. According to the technical scheme, the dispersity of active components in the layered metal oxide is effectively improved, the layered metal oxide has larger specific surface area and pore diameter, but the pore volume is reduced, and the situation that growth of SWCNTs stops due to wall collision in the growth process is effectively avoided.

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 provides a biolipid hydroisomerization catalyst and a preparation method thereof, the biolipid hydroisomerization catalyst comprises a carrier and active components, and the active components comprise Pt, Ce and La. According to the present invention, the synergistic effect between the rare earth metals Ce and La and the noble metal Pt is utilized to optimize the performance of the catalyst, the prepared hydroisomerization catalyst has characteristics of high activity and high stability, unsaturated hydrocarbon and impurities in the bio-based deoxidized oil can be effectively removed so as to generate the high-quality fuel, the hydroisomerization activity of the catalyst is improved, and the hydroisomerization efficiency is improved. The cracking selectivity is reduced, and the different direct proportion of aviation kerosene products is increased.

The invention relates to the technical field of petrochemical engineering, in particular to a deep cracking and regeneration purification method of waste lubricating oil. The invention discloses a deep cracking and regeneration purification method of waste lubricating oil, which comprises the following steps: firstly, carrying out magnetic filtration on the waste lubricating oil to separate iron-based impurities, carrying out vacuum dehydration, adsorbing acidic substances by using modified diatomite and the like; secondly, cracking with a magnetic catalyst in a magnetically stabilized fluidized bed; then, carrying out counter-current extraction by using a gamma-valerolactone solution after magnetic separation; and finally, carrying out vacuum fractionation to obtain regenerated base oil. According to the method, impurities are thoroughly removed, the catalyst can be recycled, the solvent is easy to recover, solid waste can be utilized in a high-valued manner, and the yield of the base oil is high.

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 invention relates to the technical field of preparation of catalysts, in particular to a CuNiSn-based molten catalyst for preparing graphene and a preparation method of the CuNiSn-based molten catalyst for preparing the graphene. The preparation method comprises the steps that S1, NiO-SnO2 precursor powder is prepared; s2, NiO-SnO2 powder and copper particles are mixed, high-purity nitrogen is injected into a reactor, then the temperature is increased to 800 DEG C, heat preservation is conducted for 3-4 h, and CuNi-Sn alloy blocks are obtained after the temperature is decreased to the room temperature; and S3, a smelting furnace is preheated in advance and pumped to a high-vacuum state, the CuNi-Sn alloy block and the alloy modifier are put into a crucible and put into the smelting furnace, it is ensured that the CuNi-Sn alloy block and the alloy modifier are fully mixed with the CuNi-Sn alloy block, then heat preservation is conducted for 10-15 h, and the CuNiSn-based fusion catalyst for preparing the graphene is obtained after the CuNi-Sn alloy block is cooled to the room temperature. The low solubility and high diffusivity characteristics of Ga and the ability of In to reduce the viscosity of the Ga-Sn liquid alloy, improve the carbon diffusion kinetics and enhance the electron transfer efficiency in cooperation with a conductive network of boron-doped graphdiyne jointly act on the waste plastic cracking process, the number of carbon layers of graphene can be effectively controlled, and the specific surface area and quality of graphene can be improved.

The invention relates to a reactor for autothermal or endothermic reactions, in particular for cracking ammonia, said reactor comprising: an inlet (12) for supplying a starting gas and an outlet (13) for discharging cracking gas; a reactor chamber (14) filled with a catalyst (2); and a flat-tube heat exchanger (3) located in the reactor (1), the flat-tube heat exchanger (3) being positioned in such a way that a starting gas flowing to the reactor chamber (14) and a cracking gas flowing out of the reactor chamber (14) can flow therethrough, so that energy from the out-flowing cracking gas can be transferred to the supplied starting gas. The invention also relates to: devices (100) for autothermal or endothermic reactions; a module (700); and a method for autothermal or endothermic reactions.

The invention relates to a combustion optimization and cryogenic separation-based carbon dioxide enrichment and hydrogen production synergy process for a combined device, which is characterized in that regeneration of a spent catalyst in a catalytic cracking device is changed into pure oxygen incomplete combustion, and circulating carbon dioxide is used for stabilizing fluidization and controlling tail combustion. And after the regenerated flue gas is subjected to deep purification and cryogenic separation, the part rich in carbon monoxide is fed into a medium-temperature change reactor of the steam hydrocarbon reforming device for hydrogen production, so that resource upgrading of catalytic coke is realized. And compressing and cooling the part rich in carbon dioxide to obtain about 98% of liquid phase product for subsequent application. According to the catalytic cracking device, only the regenerator needs to be adjusted, the deep purification and compression cryogenic separation unit is additionally arranged, the hydrogen production device can improve the treatment capacity of the medium-temperature change reactor, implementation is convenient, and the catalytic cracking device is suitable for new and old devices. The invention further relates to a system for carbon dioxide enrichment and hydrogen production synergy of the integrated device based on combustion optimization and cryogenic separation.

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%.

The present disclosure relates to a process for removal of carbonyl impurities from a mixed hydrocarbon stream obtained from naphtha and gas stream cracking processes. The process of the present disclosure is simple, economical and environment friendly. The process of the present disclosure is efficient in removing higher amounts of carbonyl impurities. The process of the present disclosure can be easily scaled up for commercial purposes.

A process includes flowing a catalyst composition comprising catalyst particles into a radial flow moving bed reactor, wherein the catalyst particles move by gravity through the radial flow moving bed reactor to an exit point of the radial flow moving bed reactor, wherein the catalyst particles form a moving catalyst bed in the radial flow moving bed reactor, flowing a light hydrocarbon feed stream comprising C1 to C3 alkanes into the radial flow moving bed reactor in a manner so that the light hydrocarbon feed stream flows radially inward or radially outward through the moving catalyst bed and thereby contacts the catalyst particles under reaction conditions to produce a product effluent stream comprising a C2 to C10 hydrocarbon product and hydrogen, and flowing the product effluent stream from the radial flow moving bed reactor.

The invention belongs to the technical field of petroleum processing, and particularly relates to a preparation method and application of a catalyst. The catalyst comprises a metal active component and a molecular sieve, a metal complex is added in situ in the synthesis process of the molecular sieve, anchoring of metal in a molecular sieve cage is realized by using a confinement effect in the molecular sieve cage, sub-nanometer approaching of a metal site and an acid site is realized, and the synergistic effect of the metal site and the acid site is improved; the catalytic cracking catalyst is used for synergistic catalytic cracking of biomass pyrolytic oil and petroleum distillate oil. The high-activity confinement type catalyst is synthesized, the synthesis time of the catalyst is greatly shortened by adding the metal complex while the HY molecular sieve is synthesized, the original crystal structure is kept, metal dispersion is promoted, and the catalytic reaction activity is improved. The catalyst provided by the invention is simple and controllable in active component loading capacity and size, and can be applied to the co-catalytic cracking process of biomass pyrolytic oil and / or a model compound thereof and petroleum distillate oil and / or VGO.

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 invention belongs to the technical field of preparation of biological aviation kerosene, and particularly relates to a composite catalyst, a preparation method thereof and a preparation method of the biological aviation kerosene. The isomerization catalyst and the cracking catalyst are combined, the active site of the composite catalyst is optimized, the yield of the biological aviation kerosene and the proportion of isomerization products are increased, the catalyst cost is low, and the technological process is flexible and controllable.

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.

A recycle content ethylene is fed to a reactor to make propionaldehyde having recycle content. The recycle ethylene feedstock is derived directly or indirectly from the cracking of recycle content pyrolysis oil. The cracking of the pyrolysis oil can be conducted in a gas furnace or a split furnace.