Unlock instant, AI-driven research and patent intelligence for your innovation.

Catalyst for translating oxygen-containing compound into low carbon olefin hydrocarbon

A low-carbon olefin and catalyst technology, applied in the field of catalysts

Active Publication Date: 2011-05-18
CHINA PETROLEUM & CHEM CORP +1
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The technical problem to be solved by the present invention is the low selectivity of catalyst low-carbon olefins in the prior art, and a new oxygen-containing compound is provided to convert low-carbon Olefin Catalysts

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalyst for translating oxygen-containing compound into low carbon olefin hydrocarbon
  • Catalyst for translating oxygen-containing compound into low carbon olefin hydrocarbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 12.2 g γAl 2 O 3 Mix with 30.0 grams of deionized water to form solution a; 23.5 grams of orthophosphoric acid (85% by weight), 1.82 grams of hydrofluoric acid (40% by weight), 37.5 grams of deionized water, 24 grams of tetraethylammonium hydroxide (35%) Weight) mixed uniformly to form solution b; a and b are mixed and stirred at room temperature for 3.0 hours to form a homogeneous gel c. Keep stirring, add 9.0 grams of silica sol, 18.0 grams of triethylamine and 23.2 grams of deionized water to c. After thorough stirring, a crystalline mixture d is formed. Crystallize liquid d at 200°C for 48 hours. After centrifugal separation, a solid product was obtained, which was dried in an oven at 110°C overnight. The SEM test showed that the obtained product was a small crystal SAPO-34 molecular sieve, and At least one crystal grain is smaller than 0.2 microns and contains flaky crystals. The crystal scale diagram is as follows figure 1 Shown.

Embodiment 2

[0031] Take the SAPO-34 molecular sieve synthesized in Example 1, and prepare the ingredients according to the following formula:

[0032] 16% (weight) SAPO-34 molecular sieve: 20% (weight) kaolin: 4% (weight) aluminum sol: 60% (weight) deionized water. Except for water, the raw material ratios here are all on a dry basis. The solid content in this example is 40%.

[0033] The SAPO-34 molecular sieve prepared above and a certain amount of water are mixed, stirred for 2 hours, fully stirred, and sheared at high speed with a high-speed shearing machine for 15 minutes to form a uniform molecular sieve suspension; add aluminum to the suspension Sol, fast stirring for 15 minutes, shearing with a high-speed shearing machine for 15 minutes; adding a certain amount of kaolin, stirring for 30 minutes, after reaching a uniform state, using a high-speed shearing machine for high-speed shearing and mixing for 45 minutes to obtain suspension before spray drying liquid. The molecular sieve ca...

Embodiment 3～6

[0037] All the operation steps and test conditions of Example 2 were followed, except that the ratio of molecular sieve in the catalyst was adjusted, and the following results were obtained, as shown in Table 1:

[0038] Table 1

[0039] Example

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

No PUM Login to View More

Abstract

The invention relates to a catalyst for converting oxygen-containing compounds into low-carbon olefin, which mainly solves the problem of low selectivity of the low-carbon olefin of the catalyst in the prior art. The catalyst comprises a SAPO molecular sieve, a binder and a matrix material; the dry basis chemical experience expression formula of the SAPO molecular sieve is (SixAlyPz)O2; x, y and z are mol percentages of silicon, aluminum and phosphorus elements, meeting that, x, y, z are not equal to 0, and x plus y plus z is equal to 1; the technical proposal of the invention can better solve the problem that the crystal appearance of the SAPO molecular sieve is flaky crystal, wherein the scale of three crystal faces of at least one flaky crystal are that: the length-to-width ratio of one crystal face is less than 4.0 and the length-to-width ratios of the other two crystal faces are larger than 4.0 by preparing the catalyst, and the catalyst can be used for the preparation process of olefin by using the oxygen-containing compounds.

Description

technical field [0001] The invention relates to a catalyst for converting oxygen-containing compounds into light olefins. Background technique [0002] Ethylene and propylene can be used to produce plastics and other chemical products, and are important organic chemical raw materials. With the progress and development of modern society, their demand is increasing. At present, more than 98% of the world's ethylene production comes from steam cracking technology, and propylene production is mainly obtained in two forms: the co-product of steam cracking to produce ethylene and the by-product of catalytic cracking in refineries. Due to the continuous growth of oil demand, limited production capacity growth and the non-renewability of oil resources, the price of crude oil has risen in recent years, causing the production costs of ethylene and propylene to rise accordingly, and the proven oil resources can only be exploited according to the current production level For nearly 50 ...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/85C07C1/20C07C11/02
Inventor 刘红星谢在库陆贤王伟钱堃张玉贤
Owner CHINA PETROLEUM & CHEM CORP