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Technological process for catalyzing dry gas to prepare ethylbenzene

A process flow and dry gas technology, applied in the fields of organic chemistry, hydrocarbons, hydrocarbons, etc., can solve the problem that the catalyst can never be in contact with the gas phase, the density of the packing spray cannot be too high, and the energy utilization of the device is not reasonable. and other problems, so as to achieve the effect of preventing pipeline corrosion, reducing load and saving energy consumption.

Active Publication Date: 2006-04-12
中国寰球工程有限公司辽宁分公司 +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

When there are insurmountable problems in this structure: 1. Due to the limitation of bed porosity, the packing spray density cannot be too large, otherwise the tower will not be able to operate normally; 2. The gas phase always passes through the bed, so the catalyst cannot be guaranteed. Absolutely no contact with the gas phase
[0013] But then the 3×10 4 The t / a dry gas to ethylbenzene plant is just a set of industrial experimental equipment, and the energy utilization of the equipment is not reasonable

Method used

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  • Technological process for catalyzing dry gas to prepare ethylbenzene
  • Technological process for catalyzing dry gas to prepare ethylbenzene

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Embodiment Construction

[0064] The characteristics and positive effects of the present invention can be manifested from the following application examples.

[0065] The invention includes a reaction part, an absorption part and a product separation part, and is characterized in that: the catalytic dry gas is eluted out of MDEA through a water washing tower (1) and then enters into a dry gas separator tank (2) and enters an alkylation reactor (3) in four ways The reactant enters the crude separation tower (8) after heat exchange, and the anti-alkylation material comes from the absorption tower (9), mixes with benzene and enters the anti-alkylation reactor (7) for reaction, and the reaction product is mixed with the crude The material at the bottom of the sub-tower (8) enters the benzene tower (10) respectively. The hydrocarbonation reaction product is cooled to 100-150°C through a series of heat exchanges and then enters the crude fractionation tower (8). The oil and gas at the top of the tower is par...

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Abstract

The ethyl benzene preparing process with catalytic dry gas has the advantages of no corrosion to pipeline, high benzene recovering rate and low power consumption. The apparatus includes water washing tower, alkylation tower, coarse separation tower, absorption tower, benzene tower, toluene eliminating tower, ethyl benzene tower, polyethyl benzene eliminating tower, diethyl benzene tower, heat exchanger, pump and tank. The catalytic dry gas is treated through water washing to eliminate MDEA, alkylation, heat exchange, coarse separation, cooling, serial separation in various towers and other steps to prepare ethyl benzene.

Description

Technical field: [0001] The invention relates to the technical field of producing ethylbenzene in petrochemical industry, and to be precise, it is a technical process for producing ethylbenzene by catalytic dry gas. Background technique: [0002] Benzene is an important organic chemical raw material, mainly used in the production of styrene. The strong demand for styrene in the market has driven the continuous growth of ethylbenzene production. Therefore, it is necessary to open up new sources of raw materials used in the production of ethylbenzene and find New and cheaper routes of production are of great importance. [0003] Ethylbenzene is used as the raw material of styrene monomer, 90% of which is produced by alkylation reaction of benzene and high-concentration ethylene. The source of ethylene raw materials is of great significance to the development of the ethylbenzene industry, which is related to the economic benefits and normal operation of the ethylbenzene indust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C15/073C07C2/66
Inventor 曾蓬康久常李柏程丽丽苏波李宏冰江勇
Owner 中国寰球工程有限公司辽宁分公司
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