Method for improving catalytic cracking product distribution by using heavy C9

A catalytic cracking and product technology, applied in catalytic cracking, cracking, petroleum industry, etc., can solve the problems of production scale limitation, pollution, waste of resources and the environment, and achieve the effect of increasing profits, avoiding environmental pollution, and optimizing the combination

Active Publication Date: 2016-05-11
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Petroleum resin and solvent oil are obtained by thermal polymerization and flash evaporation of heavy carbon nine. Due to the limitation of pr

Method used

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  • Method for improving catalytic cracking product distribution by using heavy C9
  • Method for improving catalytic cracking product distribution by using heavy C9
  • Method for improving catalytic cracking product distribution by using heavy C9

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Experimental program
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Effect test

Embodiment 1

[0027] Use heavy carbon nine as quenching oil to control the catalytic cracking reaction in the riser, heavy carbon nine is injected into riser reactor 1 through quenching oil pipeline 6 and quenching oil nozzle 7, and injection temperature is 40 ℃, and injection pressure is 0.4Mpa, The injection rate is 2wt% of the raw material oil feed rate, and the coking inhibitor NS-921 is mixed with the raw material oil from the pipeline 4 through the pipeline 8 and enters the reactor 1 through the raw material oil nozzle 5 simultaneously, and the addition amount of the coking inhibitor is 100ug / g.

Embodiment 2

[0029] Use heavy carbon nine as quenching oil to control the catalytic cracking reaction in the riser, heavy carbon nine is injected into the riser reactor 1 through the quenching oil pipeline 6 and quenching oil nozzle 7, the injection temperature is 40 ℃, and the injection pressure is 0.4Mpa , the injection rate is 5wt% of the raw material oil feed rate, while the coking inhibitor NS-921 is mixed with the raw material oil from the pipeline 4 through the pipeline 8 and enters the reactor 1 through the raw material oil nozzle 5, and the addition amount of the coking inhibitor is 100ug / g.

Embodiment 3

[0031] Use heavy carbon nine as quenching oil to control the catalytic cracking reaction in the riser, heavy carbon nine is injected into the riser reactor 1 through the quenching oil pipeline 6 and quenching oil nozzle 7, the injection temperature is 40 ℃, and the injection pressure is 0.4Mpa , the injection rate is 10wt% of the raw material oil feed rate, and the coking inhibitor NS-921 is mixed with the raw material oil from the pipeline 4 through the pipeline 8 and enters the reactor 1 through the raw material oil nozzle 5 simultaneously, and the addition amount of the coking inhibitor is 100ug / g.

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Abstract

The present invention relates to a method for improving the catalytic cracking product distribution by using heavy C9, and belongs to the technical field of petroleum refining. According to the method, a MIP process is used; the method comprises that raw material oil passes through a first reaction zone adopting a cracking reaction as the main and a second reaction zone adopting a hydrogen transfer reaction and an isomerization reaction as the main in the riser of a catalytic cracking reactor so as to be subjected to catalytic cracking; and the method is characterized in that heavy C9 adopted as quenching oil is injected into the riser of the catalytic cracking reactor, and a coking inhibitor is added to the raw material. According to the present invention, the liquefied gas yield, the gasoline yield and the diesel oil yield are increased, the catalytic cracking coking rate of the catalysis apparatus is reduced with the addition of the coking inhibitor, no adverse effect is generated on the product property, the catalytic cracking benefits are increased, the added value is increased, and the environmental pollution caused by the heavy C9 combustion is avoided.

Description

technical field [0001] The invention relates to a method for improving the distribution of catalytic cracking products by utilizing heavy carbon nine, and belongs to the technical field of petroleum refining. Background technique [0002] In recent years, with the rapid development of my country's petrochemical industry, especially the increase in ethylene production capacity year by year, the number of cracked C9 as a by-product of ethylene plants is also increasing. It is estimated that by 2015, my country's ethylene production capacity will exceed 20×10 6 t / a, and the output of C9 will also exceed 2.0×10 6 t / a. [0003] At present, the C9 resources produced by ethylene by-products in China are mainly used to produce C9 petroleum resins. In the thermal polymerization production of petroleum resins, the cracked C9 is pre-separated from styrene and depolymerized into methyl bicyclic monomers to obtain heavy carbon 9, heavy carbon 9 The distillation range is 120-350°C, the ...

Claims

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Application Information

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IPC IPC(8): C10G11/00
Inventor 许晓斌许金山韩新竹刘爱华
Owner CHINA PETROLEUM & CHEM CORP
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