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Light gasoline hydrocarbon recombination etherification catalytic rectification process and device thereof

A technology of catalytic distillation and light gasoline, which is applied in the petroleum industry and the treatment of hydrocarbon oil, etc. It can solve the problems of ineffective use of heat, large difference in reaction temperature, and poor etherification effect, so as to avoid heat-induced sulfonic acid groups. The effects of mass loss, improving balance conversion rate, and reducing energy consumption

Active Publication Date: 2017-03-22
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] There are two deficiencies in the prior art. One is that the large amount of heat released by the reaction cannot be effectively utilized when the combined flow process of the reactor and the catalytic distillation tower is adopted, and it is also easy to generate hot spots in the catalyst bed; the other is because C 5 Hydrocarbons and C 6 The large difference in the boiling point of hydrocarbons leads to its distribution at different heights of the catalytic distillation tower, so the reaction temperature has a large difference, and it is not easy to control the C 5 Alkenes and C 6 Olefins are in the optimal reaction conditions of the catalyst at the same time, so the etherification effect is not good

Method used

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  • Light gasoline hydrocarbon recombination etherification catalytic rectification process and device thereof

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Embodiment 1

[0054] This embodiment provides a light gasoline hydrocarbon reforming etherification catalytic rectification device ( figure 1 It is the device schematic diagram of embodiment 1 of the present invention), and the device comprises the following parts:

[0055] Preprocessor 10, flash tank 20, catalytic distillation tower 30, alcohol and hydrocarbon separation device 40; catalytic distillation tower 30 includes total condenser 34, reboiler 35 and rectification section 31 of main part, reaction section 32, Stripping section 33;

[0056] The light gasoline feedstock pipeline 101 is communicated with the inlet of the preprocessor 10, and the outlet of the preprocessor 10 is communicated with the inlet of the flash tank 20 through the flash tank feed line 102 arranged in the middle of the flash tank;

[0057] The top of the flash tank 20 communicates with the bottom of the reaction section 32 of the catalytic distillation tower through the light component feed line 103, and the bot...

Embodiment 2

[0062] This embodiment provides a catalytic rectification process for reforming etherification of light gasoline hydrocarbons, which utilizes the catalytic rectification device for reforming etherification of light gasoline hydrocarbons in Example 1.

[0063] The diameter of the catalytic rectification tower 30 is 50mm, the height of the rectification section 31 is 800mm, and the stainless steel corrugated wire mesh packing is packed, the height of the reaction section 32 is 1600mm, and the macroporous sulfonic acid resin catalyst component is packed, and the height of the stripping section 33 is 900mm. Stainless steel θ ring packing;

[0064] The light gasoline hydrocarbon reforming etherification catalytic rectification process provided in this embodiment comprises the following steps:

[0065] The light gasoline raw material is firstly removed from the basic nitrogen through the preprocessor 10, and then enters the flash tank 20 through the flash tank feed line 102. The g...

Embodiment 3

[0070] This embodiment provides a catalytic rectification process for reforming etherification of light gasoline hydrocarbons. The difference between the catalytic rectification device for reforming etherification of light gasoline hydrocarbons used in this process and the device in Example 1 is that the bottom of the flash tank 20 is Communication with the top of the reaction section 32 of the catalytic distillation column is through a heavies feed line 104 .

[0071] The light gasoline hydrocarbon reforming etherification catalytic rectification technological process in the present embodiment is identical with embodiment 2, and difference is that the liquid phase component that flash tank 20 comes out is introduced from the top of reaction section 32 of catalytic distillation tower, And the relative height and process condition parameter changes of rectification section, reaction section and stripping section, specifically:

[0072] The diameter of the catalytic rectificatio...

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PUM

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Abstract

The invention provides a light gasoline hydrocarbon recombination etherification catalytic rectification process and a device thereof. With the light gasoline hydrocarbon recombination etherification catalytic rectification process provided by the invention, a method combining hydrocarbon recombination and catalytic rectification is adopted; C5 olefins and C6 olefins are introduced from positions with different heights in the reaction section of a catalytic rectification tower, thereby realizing contact with a catalyst in a same reaction section; meanwhile, methanol is introduced into the catalytic rectification tower from two positions with different heights in the reaction section. The invention also provides a light gasoline hydrocarbon recombination etherification catalytic rectification device used for realizing the above-mentioned process. The light gasoline hydrocarbon recombination etherification catalytic rectification process provided by the invention has the advantages of less investment, simple operation, low energy consumption and high olefin etherification conversion rate.

Description

technical field [0001] The invention belongs to the field of oil product processing, and in particular relates to a light gasoline hydrocarbon recombination etherification catalytic rectification process and a device thereof. Background technique [0002] FCC gasoline is the main blending component of commercial gasoline in my country. The olefin content of catalytic cracking gasoline in my country is too high and the stability is poor, so it is necessary to reduce the olefin content to meet the restrictions on the olefin content of finished gasoline. Light gasoline fractions are rich in tertiary olefins, and the etherification reaction between tertiary olefins and low-carbon alcohols under the action of an acidic catalyst can reduce the olefin content in gasoline and increase the octane number of gasoline. The etherification reaction of olefins and alcohols is limited by the chemical equilibrium, and the product ether needs to be continuously removed during the reaction pr...

Claims

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Application Information

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IPC IPC(8): C10G53/00
Inventor 李永红李吉春孔祥冰张松显李秋颖任海鸥李长明薛英芝李金阳王洛飞彭蓉晁世海
Owner PETROCHINA CO LTD
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