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

Catalyzing cracking process and system of high efficient reducing gasoline sulphur content

A catalytic cracking, sulfur content technology, applied in catalytic cracking, cracking, petroleum industry, etc., can solve the problem of few desulfurization technology

Active Publication Date: 2009-01-14
PETROCHINA CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] To sum up, at present, there are many new technologies for reducing sulfur through the pre-hydrotreatment of raw materials, the use of sulfur-reducing catalysts or additives in the FCC process, and the post-treatment of FCC gasoline. However, they are used to directly produce low-sulfur gasoline in the FCC process. There are few desulfurization process technologies

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
  • Catalyzing cracking process and system of high efficient reducing gasoline sulphur content
  • Catalyzing cracking process and system of high efficient reducing gasoline sulphur content
  • Catalyzing cracking process and system of high efficient reducing gasoline sulphur content

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] FCC gasoline is used as raw material, mixed with water vapor and catalyst A to react; the reactant stream is settled, and the generated oil gas is separated from the catalyst to be produced; after the catalyst A to be produced is burnt and regenerated in the air, it is regenerated with hydrogen at different temperatures The reaction results after treatment for 30 minutes are listed in Table 3; the reaction results after catalyst A was treated with hydrogen at 500 ° C for different times are listed in Table 4; catalysts A, B, and C were treated with hydrogen at 550 ° C respectively The reaction results after 20 minutes of treatment are listed in Table 5. Other conditions: reaction temperature 430°C, regeneration temperature 650°C, catalyst-to-oil ratio 5, hydrogen flow rate 20L / h, all or part of the regenerated and treated catalyst A returned to FCC gasoline In the catalytic cracking reaction, and achieve recycling.

Embodiment 2

[0040] Wax oil is used as raw material, mixed with water vapor and catalyst C to react; the reactant flow is settled, and the oil gas generated is separated from the unborn catalyst; after the unborn catalyst C is burnt and regenerated in the air, it is regenerated with hydrogen at 550°C The reaction results after 20 minutes of treatment are listed in Table 6. Other conditions: reaction temperature 500°C, regeneration temperature 690°C, agent-to-oil ratio 6, hydrogen flow rate 20L / h. All or part of the regenerated and treated catalyst C is returned to the catalytic cracking reaction of the wax oil for recycling.

Embodiment 3

[0042] Wax oil is used as raw material, mixed with water vapor and catalyst C to react; the reactant stream is settled, and the generated oil gas is separated from the catalyst to be produced; after fractionation of the formed oil gas, the obtained FCC gasoline is mixed with water vapor and catalyst C Mixed reaction; Catalyst C to be born is burned and regenerated in air; Catalyst C after regeneration is treated with hydrogen at a temperature of 550°C for 20min (the results after treatment are listed in Table 7) and then divided into two parts, which are returned to the wax respectively. Oil cracking and gasoline cracking reactions, and realize recycling. Other reaction conditions: Wax oil catalytic cracking reaction temperature 500°C, regeneration temperature 690°C, catalyst-to-oil ratio 6; gasoline catalytic cracking reaction temperature 450°C, regeneration temperature 690°C, solvent-to-oil ratio 5.

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

This invention relates to high efficiency decrease of sulfur content in gasoline catalytic cracking method and the system. One or more oxidation-reduction treating element is added in the reactor-regenerator system of the existing catalytic cracking device's advancement pipe. Under some reaction condition and atmosphere, they are contacted with the liquid catalyst to generate oxidation-reduction reaction and this can adjust the valence of metal component in the catalyst. This can be satisfied with the demand of the desulfurated activity, and the desulfurated activity can be held on high lever. There is another addition of advanced pipe which has the treating element in the reactor-regenerator system, and it can make the catalytic cracking gasoline thoroughly contacted with the compound of the catalyst which is treated by high temperature. So this can process second cracking reaction, decrease the sulfur content further and olefinic hydrocarbon content, and increase the octane lever in gasoline. Through this technology and conjunction of some catalyst, the content of sulfur in gasoline can be decrease to 80% and olefinic hydrocarbon to 10-25 (v) %, and the octane lever in gasoline can not decrease but increase little.

Description

technical field [0001] The present invention relates to a catalytic cracking method, in particular to a catalytic cracking method which significantly reduces the sulfur content, which can be used for the catalytic cracking production of petroleum hydrocarbons, vacuum wax oil, atmospheric residue oil, vacuum residue oil, etc. as raw materials. Sulfur, low olefin content FCC gasoline. Background technique [0002] In recent years, with the rapid development of the economy, the consumption of automobiles and petroleum has increased rapidly, and it has also brought about increasingly serious negative impacts, namely environmental problems such as the deterioration of air quality. Therefore, the protection of the environment has been widely concerned by the society, and environmental protection regulations have become increasingly strict. From an international point of view, Europe implemented the Euro II standard in 1996, implemented the Euro III standard in 2000, and planned t...

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): C10G11/20
Inventor 高雄厚庞新梅王智峰孙书红高永福刘涛张忠东张海涛刘从华徐春明高金森
Owner PETROCHINA CO LTD