Catalytic cracking raw material pretreatment method and light oil production method and system

A catalytic cracking raw material and catalytic cracking technology, applied in catalytic cracking, hydrocarbon oil treatment, cracking and other directions, can solve the problems of large modification of the original device, insufficient reaction depth, high olefin content, low maintenance cost, reduced coking performance, high yield effect

Active Publication Date: 2019-12-31
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method mainly achieves the purpose of ultra-short reaction time-milliseconds by greatly shortening the length of the reaction tube, which further reduces the back-mixing contact reaction between oil gas and catalyst in the reaction tube, and effectively avoids the secondary reaction of intermediate products in the catalytic process. problem to achieve the purpose of increasing the yield of light oil, but there is a problem that the olefin content in gasoline is relatively high due to insufficient reaction depth
[0004] At present, the existing methods for improving the yield of light oil products in the catalytic cracking process are all used in industrial production, and the original equipment has been changed a lot, the cost is high, and the operation is troublesome.

Method used

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  • Catalytic cracking raw material pretreatment method and light oil production method and system
  • Catalytic cracking raw material pretreatment method and light oil production method and system
  • Catalytic cracking raw material pretreatment method and light oil production method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] This embodiment provides a light oil production method. details as follows:

[0066] The raw material for catalytic cracking is mixed wax oil blended with normal oil pressure residue. Its main properties and components are shown in Table 1. The catalyst is CC-20D catalytic cracking industrial equilibrium catalyst in SRY molecular sieve, with a microreactivity of 65.

[0067] The catalytic cracking raw material is subjected to cavitation pretreatment, the cavitation pretreatment device is a Venturi tube cavitation device, and the cavitation pretreatment reaction condition is: reaction pressure 4Mpa.

[0068] The operation mode in the catalytic cracking reaction process is single-pass cracking, and the reaction conditions are: the reactor outlet temperature is 490°C, the regenerator temperature is 685°C, the feedstock preheating temperature is 234°C, the reaction pressure is 0.131Mpa, the solvent-to-oil ratio is 5.9, and the reaction time is 2.85s.

[0069] Table 1 Prope...

Embodiment 2-10

[0073] The operating conditions of the catalytic cracking reaction process of Examples 2-10 are the same as those of Example 1, except that the operating conditions of cavitation pretreatment are different.

Embodiment 2

[0074] Example 2 The cavitation pretreatment reaction conditions are: the reaction pressure is normal pressure 6Mpa.

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Abstract

The invention relates to the technical field of catalytic cracking, and discloses a catalytic cracking raw material pretreatment method and a light oil production method and system. The catalytic cracking raw material pretreatment method comprises a step of carrying out cavitation pretreatment on a catalytic cracking raw material. The light oil production method comprises the following steps: carrying out cavitation pretreatment according to the pretreatment method, and then carrying out catalytic cracking reaction. The light oil production system comprises a cavitation pretreatment device anda catalytic cracking reaction system, and the cavitation pretreatment device communicates with a riser of the catalytic cracking reaction system. The method and system are simple to operate and low in cost, and can improve the yield of light oil.

Description

technical field [0001] The invention relates to the technical field of catalytic cracking, in particular to a catalytic cracking raw material pretreatment method, a light oil production method and a system. Background technique [0002] With the increasing shortage of crude oil at home and abroad and the acceleration of heavy and inferior crude oil, it has become a long-term trend to produce more light oil products in the crude oil processing process, and the catalytic cracking process is the main crude oil secondary processing process. It is even more important that its technological development conforms to this trend. In order to increase the yield of light oil products in the catalytic cracking process to a greater extent, scholars at home and abroad have conducted a lot of research and proposed many improvement methods. [0003] Chinese patent CN1224672C discloses a catalytic cracking process for improving the atomization effect of catalytic raw materials, alleviating m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/00
CPCC10G11/00C10G2300/4012
Inventor 李治刘丹禾雷杰李康韩海波陈曼桥王文柯樊麦跃魏小波
Owner CHINA PETROLEUM & CHEM CORP
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