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Method for recycling tail gas in acrolein production process

A tail gas circulation and production process technology, applied in chemical instruments and methods, carboxylate preparation, carbon-based compound preparation, etc., can solve the problems of low production process safety and large steam consumption, so as to improve the service life and reduce the Effects of energy consumption and utilization improvement

Active Publication Date: 2022-07-19
中石油吉林化工工程有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a tail gas recycling method in the acrolein production process, which solves the problems of large steam consumption and low safety of the production process in the acrolein production process

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  • Method for recycling tail gas in acrolein production process

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Embodiment Construction

[0028] In order to more clearly describe the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative efforts.

[0029] When describing embodiments of the present invention, the terms "portrait", "landscape", "top", "bottom", "front", "rear", "left", "right", "vertical", " The orientation or positional relationship expressed by "horizontal", "top", "bottom", "inside" and "outside" is based on the orientation or positional relationship shown in the relevant drawings, which are only for the convenience of describing the present invention and simplifying the description, and It is not intended to indicate or imply that the referred device or element m...

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Abstract

The invention relates to a method for recycling tail gas in an acrolein production process, comprising: S1, sending propylene, oxygen, nitrogen and medium-pressure steam into a reactor to react to generate a reactant stream; S2, sending the reactant stream to acrolein for separation The unit separates acrolein and crude acrylic acid; S3, incinerates the tail gas generated in the acrolein separation unit to generate a gas stream; S4, sends a part of the gas stream into the process system for recycling, and the rest is discharged into the atmosphere. By adopting the method for recycling tail gas in the acrolein production process of the invention, carbon dioxide and water generated by the incineration of tail gas can be sent to the production process for recycling, thereby reducing the consumption of steam in the process system. At the same time, the safety of the acrolein production process can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of chemical product preparation, relates to a technology for preparing acrolein by a propylene oxidation method, and in particular relates to a method for recycling tail gas in an acrolein production process. Background technique [0002] As an important fine chemical intermediate product, acrolein is mainly used in the preparation of animal feed additives such as methionine, glycerol, glutaraldehyde and water treatment agents. It has a wide range of applications in the breeding industry, paper industry, water treatment, medical treatment and other industries. In industry, propylene oxidation is mainly used to prepare acrolein. [0003] The process of producing acrolein by propylene oxidation mainly uses propylene and oxygen as raw materials, and a strong exothermic oxidation reaction occurs under the action of a catalyst. The reaction mainly generates acrolein, carbon monoxide, carbon dioxide, acrylic acid...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C45/35C07C47/22C07C51/25C07C57/05
CPCC07C45/35C07C51/252C07C47/22C07C57/04
Inventor 巩传志杨淼刘学线王宝玉刘利张凤涛胡明亮
Owner 中石油吉林化工工程有限公司