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A kind of catalytic cracking method of prolific gasoline

A catalytic cracking and gasoline technology, applied in the treatment of hydrocarbon oil, petroleum industry, hydrocarbon oil treatment products, etc., can solve the problems of high density, low cetane number, high aromatic content, etc., to reduce hydrogen consumption and improve applicability Effect

Active Publication Date: 2021-07-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The processing capacity of my country's catalytic cracking process is nearly 100Mt / a, and the production capacity of catalytic cracking light cycle oil (LCO) reaches 40Mt / a; LCO has the disadvantages of high density, high content of sulfur, nitrogen and aromatics, and low cetane number, so it can only be used as A poor quality diesel blending component or fuel oil used

Method used

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  • A kind of catalytic cracking method of prolific gasoline
  • A kind of catalytic cracking method of prolific gasoline
  • A kind of catalytic cracking method of prolific gasoline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] like figure 1 As shown, the catalytic cracking light cycle oil fraction first passes through the fractionation unit 2, and the light cycle oil light fraction, middle distillate and heavy fraction are obtained according to the distillation range. is 300°C. The obtained middle distillate enters the first medium-sized hydrogenation reactor 5 for the first hydrogenation treatment, and the heavy fraction enters the medium-sized second hydrogenation reactor 8 for the second hydrogenation treatment; the hydrogenation after the hydrotreatment The middle distillate, the hydrogenated heavy distillate and the catalytic cracking feed oil A from the pipeline 10 are mixed and enter the first reaction zone 11 of the riser reactor, and the light distillate enters the first reaction zone 11 of the riser reactor through the nozzle through the pipeline 3 The second reaction zone 12 at the upper end reacts under the action of catalytic cracking catalyst CGP-1, the ratio of catalytic crack...

Embodiment 2

[0058] It is basically the same as in Example 1, except that the hydrogenated heavy fraction after hydrotreating is mixed with the catalytic cracking feed oil A from the pipeline 10 and enters the first reaction zone 11 of the riser reactor, and the hydrogenation intermediate Distillates and light fractions enter the second reaction zone 12 at the upper end of the first reaction zone 11 of the riser reactor through the nozzle through the pipeline 3, and react under the action of the catalytic cracking catalyst CGP-1. The hydrogenation reaction conditions are shown in Table 3. Catalytic cracking The reaction conditions and product distribution are shown in Table 5.

Embodiment 3

[0060]It is basically the same as Example 1, except that the light distillate, the hydrogenated middle distillate after hydrotreating, and the hydrogenated heavy distillate are mixed with the catalytic cracking feedstock A at the same time and enter the first reaction zone of the riser reactor 11 and successively pass through the first reaction zone 11 and the second reaction zone 12, and react under the action of catalytic cracking catalyst CGP-1. The hydrogenation reaction conditions are shown in Table 3, and the catalytic cracking reaction conditions and product distribution are shown in Table 5.

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Abstract

The present invention relates to a catalytic cracking method for prolific gasoline. The method comprises: a. cutting catalytic cracked light cycle oil to obtain light fraction, middle fraction and heavy fraction; b. combining the middle fraction obtained in step a with the first The hydrogenation catalyst is contacted in the first hydrogenation reactor and carried out the first hydrogenation treatment to obtain the hydrogenated middle distillate; the heavy fraction obtained in step a is contacted with the second hydrogenation catalyst in the second hydrogenation reactor and carried out The second hydrogenation treatment is to obtain the hydrogenated heavy fraction; c. Send the light fraction, the hydrogenated middle fraction and the hydrogenated heavy fraction and the catalytic cracking feedstock oil into the riser reactor to contact with the catalytic cracking catalyst and carry out the catalytic cracking reaction. The catalytic cracking method provided by the invention can produce more gasoline.

Description

technical field [0001] The invention relates to a catalytic cracking method for producing gasoline. Background technique [0002] The processing capacity of my country's catalytic cracking process is nearly 100Mt / a, and the production capacity of catalytic cracking light cycle oil (LCO) reaches 40Mt / a; LCO has the disadvantages of high density, high content of sulfur, nitrogen and aromatics, and low cetane number, so it can only be used as A lower quality diesel blending component or fuel oil is used. In addition, catalytic cracking gasoline accounts for nearly 80% of the finished gasoline pool. With the change of my country's industrial structure and the increase of car ownership year by year, the gasoline and diesel market in my country has changed, and the diesel-gasoline ratio has further decreased; and my country's environmental protection requirements are becoming increasingly stringent. More stringent requirements have been imposed on the quality of gasoline and diesel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/00
CPCC10G67/00C10G2400/02
Inventor 许友好白旭辉崔守业
Owner CHINA PETROLEUM & CHEM CORP
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