Olefin catalytic agent prepared by naphtha catalytic cracking and preparation method and application thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A catalytic cracking and catalyst technology, used in physical/chemical process catalysts, hydrocarbon cracking to hydrocarbon production, molecular sieve catalysts, etc., can solve problems such as uneven mixing and catalyst deactivation too fast
Active Publication Date: 2013-01-09
CHINA PETROLEUM & CHEM CORP +1
View PDF9 Cites 40 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
The above-mentioned catalyst is prepared by mechanically kneading the carrier and each component, and there is uneven mixing, which causes the problem of excessive local deactivation of the catalyst during the catalysis process.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Examples
Experimental program
Comparison scheme
Effect test
example 1
[0022] Preparation and molding of EU-1 / ZSM-5 composite molecules: Add appropriate amount of TPAOH, TPABr, and 50ml distilled water in a beaker, stir evenly, then add 5g EU-1 molecular sieve crystal seeds, stir for 10min, finally add silica sol, stir for 30min Then put it into a synthesis kettle; heat in an oven at 120°C for 48h, filter the obtained product, wash with distilled water until neutral, dry, and roast at 550°C for 6h, and obtain ZSM-5 with a weight content of 50% after ammonium exchange EU-1 / ZSM-5 composite molecular sieve. Composite molecular sieve and appropriate amount of γ-Al 2 o 3 Mix evenly, add appropriate amount of scallop powder and dilute nitric acid solution with a concentration of 10%, knead and extrude to shape, dry at 120°C for 3 hours, and roast at 540°C for 6 hours.
[0023] Loaded phosphotungstic acid: based on the weight content of the final catalyst, it contains 75% EU-1 / ZSM-5 composite molecular sieve, 1% heteropolyacid, and weighs an appropria...
example 2
[0030] Preparation of catalytic cracking catalysts EZ-1, EZ-2, EZ-3 containing 60%, 80%, 90% EU-1 / ZSM-5 composite molecular sieve and 1% phosphotungstic acid with a reaction temperature of 600 ℃, all the other preparation methods and application conditions are the same as in Example 1. The results are shown in Table 1.
[0036] Prepare catalytic cracking catalysts EZ-4, EZ-5, EZ-6 containing 70% EU-1 / ZSM-5 composite molecular sieve, 0.5%, 2%, 3% phosphotungstic acid, and the reaction temperature is 650 ℃, all the other preparation methods and application conditions are the same as in Example 1. The results are shown in Table 2.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention discloses an olefin catalytic agent prepared by naphtha catalytic cracking, a preparation method of the olefin catalytic agent and application of the olefin catalytic agent. According to the weight content of a final catalytic agent, the olefin catalytic agent comprises 60%-90% of EU-1/ZSM-5 composite molecular sieve and 0.5%-3% of heteropolyacid. The olefin catalytic agent is prepared by the following methods of: preparing or selecting the EU-1/ZSM-5 composite molecular sieve, adding a binding agent to mold, and then adopting an impregnation method to load heteropolyacid to prepare the final catalytic cracking catalytic agent. The application of the catalytic agent in preparation of olefin by the naphtha catalytic cracking is that the reaction temperature is 500-700 DEG C, the reaction pressure is 0.01-0.5MPa, the naphtha quality airspeed is 0.3-2h<-1>, the water-oil volume ratio is 0.6-1.2, C5-C10 naphtha serves as a raw material, and total recovery of ethylene and propylene can achieve 67% (of the weight of naphtha). The olefin catalytic agent has the advantages of high olefin yield coefficient, stable catalytic agent, low reaction temperature and the like.
Description
technical field [0001] The invention relates to a catalyst for producing olefins by catalytic cracking of naphtha and its preparation method and application, in particular to a catalyst for producing ethylene propylene by catalytic cracking of naphtha and its preparation method and application. Background technique [0002] Since the beginning of the new century, the world’s demand for petrochemical raw materials and petrochemical products will continue to grow, and the demand for ethylene and propylene, which are the basic petrochemical raw materials, will continue to grow. However, the production capacity of conventional steam pyrolysis technology cannot meet the rapidly growing demand for propylene. Furnace steam pyrolysis is a process that consumes a lot of energy, and the process conditions are harsh. Compared with steam thermal cracking, the reaction temperature of naphtha catalytic cracking is about 50-200℃ lower than the standard cracking reaction. Therefore, it cons...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more