摘要:
The present invention relates to an oxide catalyst and a phosphoric oxide catalyst for hydrocarbon steam cracking, method for preparing the same and a method for preparing olefin by using the same. More precisely, the present invention relates to an oxide catalyst for hydrocarbon steam cracking represented by formula 1 and a phosphoric oxide catalyst for hydrocarbon steam cracking represented by formula 3 which would be used for the production of olefin such as ethylene and propylene by hydrocarbon steam cracking, and a method for preparing the same. The present invention provides an oxide catalyst and a phosphoric oxide catalyst for hydrocarbon steam cracking that has excellent thermo-stability at high temperature and improved olefin yield. CrZrjAkOx [Formula 1] CrZrjAkPlOx [Formula 3] Wherein, j, k, l and x are as indicated in the description.
摘要:
A method for producing olefins using a carbon nanotube catalyst is disclosed. Initially, a hydrocarbon feedstock is received. The hydrocarbon feedstock, the carbon nanotube catalyst, and steam are mixed in a thermal cracking reactor. The mixture is heated in the thermal cracking reactor to a particular temperature. The olefins are then separated from the mixture. The carbon nanotube catalyst can include carbon nanotubes coated with M1xOy and modified with M2mOn. M1 can be either the element silicon or tungsten, x can be an integer that represents the oxidation number of M1, and y can an integer that represents the number of oxygen atoms required by the oxidation number of M1. M2 can be a metallic element, m can be an integer that represents the oxidation number of M2, and n can be an integer that represents the number of oxygen atoms required by the oxidation number of M2.
摘要:
The present invention relates to a process and equipment for fluid catalytic cracking for the production of middle distillates of low aromaticity that comprises cracking a mixed feed consisting of heavy fractions of hydrocarbons, in the absence of added hydrogen and employing a catalyst of low activity and low acidity, in a dense-bed FCC reactor to produce an effluent constituted of fractions of middle distillates and naphtha of low aromaticity.
摘要:
The invention relates to a method for chemical-looping redox combustion on an active mass including a binder, in form of a fluidized-bed catalytic cracking catalyst containing silica and alumina, and a metal oxide active phase. The active mass is obtained by impregnating metal salts on a new or used catalytic cracking catalyst. Advantageously, the invention applies to the sphere of CO2 capture.
摘要:
A process for the production of high attrition resistant inorganic compositions is provided. The formation of highly attrition resistant compositions is accomplished by forming a slurry of inorganic components, a binder, and optionally clay and matrix materials, milling the slurry, and cooling the milled slurry to a temperature below 17° C., preferably below 10° C. The cooled slurry is subjected to spray-drying, and optionally calcining and/or washing, to provide highly attrition resistant inorganic particles. Catalytic cracking catalysts formed by the process are also disclosed.
摘要:
Novel catalytic compositions for cracking of crude oil fractions are disclosed. The catalytic compositions comprise a basic material. When used in a cracking process, preferably a FCC process, the resulting LCO and HCO fractions have desirably low aromatics levels. Further disclosed is a one-stage FCC process using the catalytic composition of the invention. Also disclosed is a two-stage FCC process for maximizing the LCO yield.
摘要:
The present invention 1, 2 or 3 provides a desulfurization function-added FCC catalyst which can efficiently reduce the sulfur content of FCC gasoline while maintaining the yield of FCC gasoline in a process of producing FCC gasoline by cracking of heavy oil. The catalyst has vanadium supported on a carrier comprising (a) an alumina-coated zeolite and (b) a porous inorganic oxide except zeolite and/or a clay mineral, wherein the supported vanadium amount is from 500 to 20000 ppm by mass in terms of vanadium metal and the acid amount is from 20 to 450 μmol/g and the macropore surface area is from 30 to 150 m2/g; or the catalyst has vanadium supported on a carrier containing from 5 to 40% by mass of (a) an alumina-coated zeolite and from 30 to 70% by mass of (b) an alumina, wherein the vanadium concentration ratio before and after grinding the catalyst is at least 2; or the catalyst has at least vanadium and manganese and/or phosphorus supported on a porous inorganic oxide-containing carrier, wherein the supported vanadium amount is from 500 to 20000 ppm by mass in terms of vanadium metal, vanadium and manganese and/or phosphorus form a complex ion in the supporting solution for use in supporting vanadium and manganese and/or phosphorus, and the permeability of the complex ion through a reverse osmosis membrane is at most 25% relative to the permeability of vanadium through the reverse osmosis membrane.
摘要:
This invention relates to a FCC process using a mesoporous catalytic cracking catalyst. The mesoporous fluidized catalytic cracking catalyst is selective for minimizing the production of coke and light gas. The catalyst comprises at least one amorphous, porous matrix, each matrix having pores ranging in diameter from about 1 Å to about 10 Å and pores ranging in diameter from about 40 Å to about 500 Å, wherein in the pore range from 50 Å to 250 Å, there is a single maximum in differential pore volume distribution over the 50 Å to 250 Å range.
摘要:
Compositions suitable for use in FCC processes are provided that are capable of providing improved CO oxidation promotion activity along with NOx emission control. Generally, compositions are provided for promoting CO oxidation in FCC processes, wherein the compositions contain (i) a basic material support, (ii) at least one oxide of a lanthanide series element, (iii), optionally, at least one oxide of a transition metal selected from Groups Ib and IIb of the Periodic Table and (iv) at least one precious metal. The basic material support is preferably a hydrotalcite-like compound.
摘要:
Compositions and methods suitable for removing poisonous metals from hydrocarbons are provided. The compositions comprise hydrotalcite having one or more trapping metals dispersed on the outer surface thereof.