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Method for improving gasoline yield of catalytic cracking technology and device thereof

A technology of catalytic cracking gasoline and catalytic cracking unit, which is applied in the field of improving gasoline yield, can solve the problem of low gasoline yield, and achieve the effect of increasing processing efficiency

Inactive Publication Date: 2014-03-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the gasoline yield of the traditional catalytic cracking process and equipment is not high. How to further increase the gasoline yield of the catalytic cracking unit has always been one of the main research topics in the development of refining technology.

Method used

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  • Method for improving gasoline yield of catalytic cracking technology and device thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] Conventional FCC process: Only quench water is used to control the FCC reaction in the riser.

[0024] Device for use: including feed pipeline 1 and riser 10, the bottom of riser 10 is connected to feed pipeline 1, the outlet at the top of riser 10 is connected to oil and gas pipeline 4, the middle of riser 10 is connected to quenching water pipeline 2, and the outlet of riser 10 is set Thermometer A9.

[0025] In Example 1, the yield of gasoline under typical working conditions is 47.3%, the yield of catalytic cracking coke and oil slurry is 7.9%, the yield of catalytic cracking dry gas and liquefied gas is 23.4%, and the yield of diesel oil is 21.4%.

Embodiment 2

[0027] The catalytic cracking process is as follows: in the catalytic cracking process of the above-mentioned embodiment 1, the normal line oil from the atmospheric and vacuum distillation unit is injected into the middle part of the riser 10 of the catalytic cracking unit as quench oil. Quenching oil is injected continuously. Quench oil is a light oil component in the petroleum refining process, with a distillation range of 150°C to 280°C. The quenching oil injection temperature is 30°C-200°C, and the pressure is 0.3MPa-0.6MPa.

[0028] The device used in the process of the present invention is: on the basis of the catalytic cracking unit used in the above-mentioned embodiment 1, the quench oil pipeline 3 using the normal line oil of the atmospheric and vacuum distillation unit as the quench oil is introduced in the middle of the riser 10. Its structure is as follows: it includes an atmospheric and vacuum distillation unit and a catalytic cracking riser 10, the bottom of the...

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Abstract

The invention relates to a method for improving gasoline yield of catalytic cracking technology and a device thereof. The method comprises the following steps: in a catalytic cracking process, taking atmospheric first line oil as the quenching oil, and injecting the atmospheric first line oil into the middle part of a lifting pipe of a catalytic cracking device. The device comprises a lifting pipe and a quenching oil pipeline, the bottom of the lifting pipe communicates with a material feeding pipeline, the outlet in the top part of the lifting pipe communicates with an oil and gas pipeline, the middle part of the lifting pipe communicates with a quenching water pipeline, the middle part of the lifting pipe is provided with an introducing pipeline, the introducing pipeline communicates the quenching water pipeline and the quenching oil pipeline, and the quenching oil pipeline communicates with an atmospheric and vacuum distillation device. The method and the device thereof have the advantages that the gasoline yield is increased, the coke generation rate in the catalytic cracking proves is decreased, the dry gas yield and the liquefied gas yield during the catalytic cracking process are slightly reduced, the diesel oil yield is slightly improved, and thus the processing efficiency of the catalytic cracking device is improved.

Description

technical field [0001] The invention belongs to the field of petroleum refining, in particular to a method and a device for increasing gasoline yield in catalytic cracking reaction process. Background technique [0002] The catalytic cracking process is an important means for the refinery to realize the conversion of heavy oil products to light oil products, and is one of the main sources of economic benefits for the refinery. [0003] In the catalytic cracking process, the raw material is atomized through the feed nozzle and then contacted with the high-temperature regenerated catalyst in the riser and vaporized by heating up. The vaporized raw material oil gas and catalyst flow from bottom to top in the riser reactor and are catalyzed by the catalyst. Chemical reactions such as cracking, isomerization, hydrogen transfer, cyclization, and condensation occur, and the raw oil is converted into high-temperature reaction oil gas (a mixture of dry gas, liquid hydrocarbons, gasol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G55/06
Inventor 胡正海钟湘生冯海春简建超常培廷雷平
Owner CHINA PETROLEUM & CHEM CORP
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