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Catalytic cracking method and device in favor of processing inferior heavy oil

A low-quality heavy oil, catalytic cracking technology, applied in the petroleum industry, processing hydrocarbon oil, etc., can solve the problems of large deviation of raw material oil quality, high coke generation rate of low-quality oil, catalyst regeneration, etc., to achieve improved energy consumption, good production environment, Effect of improving yield and added value

Inactive Publication Date: 2014-04-23
马俊杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Solve the problems of large deviation of raw material oil quality, high coke rate of inferior oil, coking effect, catalyst regeneration and other problems in the existing double riser production process

Method used

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  • Catalytic cracking method and device in favor of processing inferior heavy oil
  • Catalytic cracking method and device in favor of processing inferior heavy oil
  • Catalytic cracking method and device in favor of processing inferior heavy oil

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Embodiment Construction

[0022] In conjunction with the accompanying drawings, the following embodiments of the present invention are given, but the present invention is not limited to the following embodiments.

[0023] The technological process of the catalytic cracking method described in this embodiment, which is beneficial to the processing of inferior heavy oil, includes a main reaction part, a side reaction part and a regeneration system part.

[0024] Such as figure 1 As shown: the main reaction process is to fully mix the crude oil with a density ≤ 0.935 and a carbon residue value ≤ 8 into the ordinary heavy oil riser 19 through the feed oil nozzle 20 of the ordinary heavy oil riser, and fully mix it with the regenerated catalyst that enters through the regeneration slide valve 1 of the ordinary heavy oil riser Carry out the cracking reaction to form oil and gas enter the heavy oil settler 7, and separate the catalyst in the oil and gas through the heavy oil settler cyclone separator of the ...

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Abstract

The invention discloses a catalytic cracking method in favor of processing inferior heavy oil, which is characterized in that a raising pipe for common heavy oil is used for processing the heavy oil of which density is less than or equal to 0.935 and a carbon residue value is less than or equal to 8; a raising pipe for inferior heavy oil is used for processing the heavy oil of which high intensity is more than 0.935 and a carbon residue value is between 8-13; and recycle oil and slurry oil separated by a main fractionating tower are all cracked in the raising pipe for the inferior heavy oil. Two fractionating towers are designed, the main fractionating tower is used for carrying out fractionation on reaction oil and gas in the raising pipe for the common heavy oil, and a secondary fractionating tower is used for carrying out fractionation on oil and gas in the raising pipe for the inferior heavy oil; the slurry oil and the recycle oil generated by the main fractionating tower are all retuned to the raising pipe for the inferior heavy oil to react; a small amount of slurry oil generated by the secondary fractionating tower is returned to the raising pipe for the inferior heavy oil to recycle; a large amount of recycle oil generated by the secondary fractionating tower is returned to the raising pipe for the inferior heavy oils; oil and gas in the top of the main and secondary fractionating towers are collected together to an oil and gas separator above the fractionating towers for moisture separation; and a coke-burning drum is used for carrying out high-intensity coke-burning on a catalyst which is used for processing the inferior heavy oil, and then the catalyst enters into a regenerator to perform catalyst regeneration.

Description

technical field [0001] The invention belongs to the technical field of catalytic cracking reaction, and mainly relates to a catalytic cracking method and device beneficial to processing inferior heavy oil. Background technique [0002] At present, domestic and foreign catalytic cracking processes are mainly divided into two types: single-riser and double-riser processes according to the layout of the riser. [0003] The catalytic process of single riser, single settler, and single fractionation tower was developed relatively early and mature. The representative process is shown in Figure-2. The raw material oil enters from the lower part of the riser 19, and the catalyst coming from the bottom of the reaction is mixed with the raw material during the rising process. The oil is charged and contacted, and through a series of reactions, the mixed oil gas composed of gasoline, diesel oil, liquefied gas and other products is finally obtained. After the settler 7 is separated from...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G55/00
Inventor 马俊杰
Owner 马俊杰
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