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Catalytic conversion method for preparing propylene and high-octane value gasoline

A technology of high-octane gasoline and catalytic conversion method, which is applied in catalytic cracking, cracking, organic chemistry, etc., and can solve the problems of poor selectivity of dry gas and coke

Active Publication Date: 2013-07-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventors have found through research that although these fine particle catalysts have high cracking capacity, their selectivity to dry gas and coke is poor, and optimizing the sieve composition of the catalyst can improve the selectivity of dry gas and coke

Method used

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  • Catalytic conversion method for preparing propylene and high-octane value gasoline
  • Catalytic conversion method for preparing propylene and high-octane value gasoline
  • Catalytic conversion method for preparing propylene and high-octane value gasoline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] This example follows figure 1 The process of the experiment is carried out, and the raw material oil A is directly used as the raw material oil of catalytic cracking, and the test is carried out on the medium-sized device of the riser reactor, and the raw material oil A enters the reaction zone I. Reaction temperature 530°C, weight hourly space velocity 30h -1 , the weight ratio of catalyst DL-1 to feedstock oil is 10, and the weight ratio of water vapor to feedstock oil is 0.15 to carry out the cracking reaction. The reaction product oil gas and the catalyst to be born with charcoal are separated in the settler, and the product is separated in the separation system according to The distillation range is cut to obtain products such as propylene, gasoline and catalytic wax oil. The operating conditions and product distribution are listed in Table 3.

Embodiment 2

[0102] This example follows the attached image 3 The process of the test is carried out, the catalyst is DL-1, and the raw material oil A is directly used as the raw material oil for catalytic cracking. The test is carried out on a medium-sized device with a riser reactor. The easily cracked raw material oil enters the middle and upper part of the reaction zone I, and the difficult cracked raw material The oil enters the bottom of the reaction zone I, and at the bottom of the reaction zone I, the difficult-to-crack raw oil is heated at a reaction temperature of 640 °C and a weight hourly space velocity of 180 -1 , the weight ratio of catalyst DL-1 to difficult-to-crack raw oil is 60, and the weight ratio of water vapor to difficult-to-crack raw oil is 0.20 to carry out the cracking reaction; Weight hourly space velocity 60h -1 , the weight ratio of catalytic cracking catalyst to easily cracked raw oil is 10, and the weight ratio of water vapor to easily cracked raw oil is 0....

Embodiment 3

[0108] This example follows Figure 4 The test is carried out according to the process, and the raw material oil B is directly used as the raw material oil for catalytic cracking, and the test is carried out on a medium-sized device with a riser reactor. The cracked raw material oil enters the middle and upper part of the reaction zone I, and butene enters the reaction zone I as the re-cracked raw material oil. Bottom, at the bottom of the reaction zone I, the re-cracked raw oil is heated at a reaction temperature of 630°C and a weight hourly space velocity of 180h -1 , the weight ratio of catalytic cracking catalyst to re-cracked feedstock oil is 62, and the weight ratio of water vapor to re-cracked feedstock oil is 0.20 to carry out the cracking reaction; Speed ​​65h -1 , the weight ratio of catalytic cracking catalyst to cracked raw oil is 10, and the weight ratio of water vapor to cracked raw oil is 0.15 to carry out the cracking reaction. In addition, the supplementary p...

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Abstract

The invention discloses a catalytic conversion method for preparing propylene and high-octane value gasoline. Crude oil contacts a catalyst rich in mesoporous zeolite and with coarse particle size distribution for reaction; and reaction temperature, weight hourly space velocity and the weight ratio of the catalyst to the crude oil are sufficiently proper for preparing a reaction product comprising 12 to 60 percent of catalytic wax oil based on the weight of the crude oil in the reaction, wherein the weight hourly space velocity is 25 to 100 h<-1>; the reaction temperature is 450 to 600 DEG C;and the weight ratio of the catalyst to the crude oil is 1 to 30. The invention provides the catalytic conversion method based on the prior art, which particularly has the advantages of greatly reducing dry gas yield and coke yield at the same time of converting the heavy crude oil into the high-octane value gasoline and the propylene so as to realize the high-efficiency utilization of oil resources.

Description

technical field [0001] The invention relates to a catalytic conversion method, especially a method for converting heavy raw materials into high-octane gasoline and propylene, while greatly reducing dry gas and coke yields so as to realize efficient utilization of petroleum resources. Background technique [0002] Propylene and other low-carbon olefins are important organic chemical raw materials, and propylene is a synthetic monomer for products such as polypropylene and acrylonitrile. With the rapid growth of demand for derivatives such as polypropylene, the demand for propylene is also increasing year by year. The demand in the world propylene market has increased from 15.2 million tons 20 years ago to 51.2 million tons in 2000, with an average annual growth rate of 6.3%. It is estimated that the demand for propylene will reach 86 million tons by 2010, with an average annual growth rate of about 5.6%. [0003] The methods for producing propylene are mainly steam cracking...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C11/06C07C4/06C10G11/02C10G11/05
CPCY02P20/52
Inventor 许友好谢朝钢龙军达志坚张久顺罗一斌朱玉霞
Owner CHINA PETROLEUM & CHEM CORP
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