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Catalytic reaction unit and reaction distillation tower

A technology of reactive distillation tower and catalytic reaction, which is applied in the direction of distillation separation, distillation liquid distribution, fractionation, etc., can solve the problems that cannot effectively solve the problem of gas phase reaction product reaction zone separation, so as to improve the equilibrium conversion rate, increase the driving force, and improve the selection sexual effect

Active Publication Date: 2022-05-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a catalytic reaction unit and a distillation tower using the reaction unit, so as to overcome the inability to effectively solve the problem of gaseous reaction products from reaction in time in the prior art. Disadvantages of zone separation, especially for the case where the gas phase product can undergo secondary reactions, efficient separation can still be carried out

Method used

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  • Catalytic reaction unit and reaction distillation tower
  • Catalytic reaction unit and reaction distillation tower
  • Catalytic reaction unit and reaction distillation tower

Examples

Experimental program
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Effect test

Embodiment 1

[0050] The catalytic reaction unit of the present invention is used in a hydrocracking reactor in a catalytic diesel hydrocracking process, and a pre-refining reactor is connected in series upstream of the cracking reactor process to remove impurities in raw oil. As the catalyst, the same type of catalyst used in industrial plants was used. The gasoline fraction yield of the cracked product is 50.1%, the gasoline octane number RON is 88.2, and the liquid yield is 91.1%.

[0051] Operating conditions and results:

[0052] The density of catalytic diesel oil is 0.9464g·cm -3 , Distillation range 168-370°C;

[0053] The purity of hydrogen is 99.9%;

[0054] Refined oil nitrogen content 70-100mg.kg -3 ;

[0055] The operating pressure of the catalytic distillation tower is 4.0Mpa;

[0056] The number of catalyst bed layers in the catalytic distillation tower: 1 layer;

[0057] Cracking liquid hourly space velocity LHSV: 1.5h -1 ;

[0058] Hydrogen oil volume ratio: 700:1;...

Embodiment 2

[0062]The catalytic reaction unit of the present invention is used in a hydrocracking reactor in a catalytic diesel hydrocracking process, and a pre-refining reactor is connected in series upstream of the cracking reactor process flow for removing impurities in raw oil. The catalyst uses the same type of catalyst used in industrial devices, and is fixed on the bed with a stainless steel mesh. The gasoline distillate yield of the cracked product is 54.1%, the gasoline octane number RON is 93.3, and the liquid yield is 98.2%.

[0063] Operating conditions and results:

[0064] The density of catalytic diesel oil is 0.9464g·cm -3 , Distillation range 168-370°C;

[0065] The purity of hydrogen is 99.9%;

[0066] Refined oil nitrogen content 70-100mg.kg -3 ;

[0067] The operating pressure of the catalytic distillation tower is 4.0Mpa;

[0068] The number of catalyst bed layers in the catalytic distillation tower: 10 layers;

[0069] Cracking liquid hourly space velocity LHS...

Embodiment 3

[0077] The catalytic reaction unit of the present invention is used in a hydrocracking reactor in a catalytic diesel hydrocracking process, and a pre-refining reactor is connected in series upstream of the cracking reactor process flow for removing impurities in raw oil. The catalyst uses the same type of catalyst used in industrial devices, and is fixed on the bed with a stainless steel mesh. The gasoline fraction yield is 55.3%, the gasoline octane number RON is 93.1, and the liquid yield is 98.6%.

[0078] Operating conditions and results:

[0079] The density of catalytic diesel oil is 0.9464g·cm -3 , Distillation range 168-370°C;

[0080] Refined oil nitrogen content 70-100mg.kg -3 ;

[0081] The operating pressure of the catalytic distillation tower is 6.0Mpa;

[0082] The number of catalyst bed layers in the catalytic distillation tower: 10 layers;

[0083] Liquid hourly space velocity LHSV: 1.5h -1 ;

[0084] The load of the downcomer on the first layer is desi...

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Abstract

The present invention discloses a catalytic reaction unit, which comprises: catalyst bed layers used for filling a solid catalyst, the upper part of the solid catalyst filled in each catalyst bed layer having an inclined surface; a liquid phase feed subunit disposed over an inclined surface of the topmost catalyst bed through which a liquid phase feed is directed to the catalyst bed; the gas-phase feeding subunit is arranged between the upper catalyst bed layer and the lower inclined surface, and gas-phase feed of each layer upwards enters the catalyst bed layer; the gas-phase channel and the gas-phase feeding subunit are in a relatively isolated state, and a gas-phase product generated after the gas-phase feeding material and the liquid-phase feeding material react on the catalyst bed layer directly enters the gas-phase channel. According to the invention, gas-phase reaction products can be separated from a reaction zone in time, and particularly, the gas-phase products can still be efficiently separated under the condition that secondary reaction can be carried out on the gas-phase products.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a catalytic reaction unit and a reaction distillation tower using the unit. Background technique [0002] Catalytic distillation originated in the chemical industry and is a technology that completes catalytic reactions and distillation operations in one container. It has many advantages such as energy saving, high efficiency and good economy. In view of the advantages brought by catalytic distillation technology, it has been relatively maturely applied in the chemical industry. As early as the 1960s, American companies have begun to use the concept of catalytic distillation to solve the problem that it is difficult to separate mixtures containing normal olefins, isoolefins and alkanes by traditional distillation due to similar boiling points. After that, based on the characteristics of different reactions, various catalytic distillation equipment came into being. For exa...

Claims

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Application Information

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IPC IPC(8): B01J8/04B01D3/00
CPCB01J8/0465B01J8/0492B01D3/009B01D3/008B01J2208/00911B01D3/24Y02P20/10B01D3/141B01J8/0257B01J8/0278B01J2208/0084B01J2208/00938B01J2208/027
Inventor 赵玉琢
Owner CHINA PETROLEUM & CHEM CORP
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