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Method and device for catalytic conversion of light dydrocarbon

A catalytic conversion method and technology of light hydrocarbons, applied in catalytic cracking, cracking, petroleum industry, etc., can solve problems such as optimization of operating conditions of unreactive systems

Active Publication Date: 2010-03-10
LUOYANG WEIDA PETROCHEMICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current heat extraction technology, that is, the catalyst cooling technology, only has the function of heat extraction because the cold regenerated catalyst returns to the dense phase section of the regenerator, and cannot optimize the operating conditions of the reaction system. Therefore, the current reaction regeneration system technology has its shortcomings

Method used

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  • Method and device for catalytic conversion of light dydrocarbon
  • Method and device for catalytic conversion of light dydrocarbon
  • Method and device for catalytic conversion of light dydrocarbon

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0125] For verifying the effect of the present invention, adopt figure 2 In the process flow shown, the raw material is catalytic cracking gasoline, and the catalyst is the CORH catalyst produced by the Catalyst Factory of Changling Oil Refinery. The process conditions, raw material properties and test results used are listed in Table 1.

[0126] The results in Table 1 show that the olefin volume content in gasoline is reduced by 65%, the octane number (RON) can be increased by 0.6 units, and the sulfur content in gasoline is reduced by 45% (weight).

[0127] Table 1

[0128]

example 2

[0130] For verifying the effect of the present invention, adopt image 3 For the process flow shown, the heavy oil riser adopts the process conditions shown in Table 3, the raw materials shown in Table 2, and the CORH catalyst produced by the Changling Refinery Catalyst Factory. The test results are listed in Table 4.

[0131] The results in Table 4 show that the yield of coke and dry gas decreased by 2.1%, the volume content of olefins in gasoline decreased by 65%, and the octane number (RON) increased by 0.6 units.

[0132] Table 2

[0133] logistics

Density, 20 / 4°C

0.930

Charcoal residue

0.12% (Wt)

Sulfur content

0.24% (Wt)

[0134] table 3

[0135]

parameters

current technology

Option A

this invention

Option B

Riser reaction temperature, ℃

505

505

Feed temperature, ℃

200

200

regeneration temperature, ℃

680

700

...

example 3

[0143] For verifying the effect of the present invention, adopt figure 2 In the process flow shown, the raw material is mixed carbon four rich in butene (C3+C5: 0.7mol%, butane: 11.2mol%, butene: 88.10mol%), and the catalyst is produced by the catalyst factory of Changling Refinery CORH catalyst and ZSM-5 catalyst.

[0144] The process conditions and test results adopted are listed in Table 6.

[0145] Table 6

[0146] serial number

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Abstract

The invention provides a method for catalytic conversion of light dydrocarbon, which comprises that: a light dydrocarbon raw material (gaseous or liquid) enters a riser, is mixed with a cold regenerated catalyst from a pre-lifting zone of the light dydrocarbon riser, and then enters a light dydrocarbon riser reactor or a fluidized bed reactor to mainly undergo light dydrocarbon catalytic conversion reactions such as catalytic cracking, isomerization and aromatization and the like under the operating conditions that the reaction temperature is between 350 and 650DEG C, the absolute pressure is between 0.11 and 0.4MPa, and the contact time is 0.5 to 30 seconds to achieve the aims of reducing olefin, sulfur and nitrogen content and improving octane number.

Description

technical field [0001] The invention belongs to the field of catalytic cracking, in particular to the catalytic conversion of light hydrocarbons by using a cold regenerated catalyst circulation method and a device thereof. Background technique [0002] With the rapid development of petrochemical industry, various light olefins, especially propylene and ethylene resources, are becoming increasingly scarce. In order to solve the above problems, improve the yield of light olefins and the quality of gasoline products, a lot of research work has been done in domestic and foreign refining circles. [0003] With the worsening of crude oil quality and the increasing trend of heavy quality, the blending ratio of catalytic cracking residual oil continues to increase, and the quality of gasoline produced by catalytic cracking, coking, thermal cracking and other processes has become worse. On the one hand, olefins in gasoline are effective components with high octane number; on the othe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/00
Inventor 李群柱李莉
Owner LUOYANG WEIDA PETROCHEMICAL ENG CO LTD
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