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System and method for producing succinic acid and PBS from natural gas

A technology of succinic acid and natural gas, which is applied in the chemical industry and can solve problems such as poor economy and high production costs

Active Publication Date: 2021-04-30
CHINA CHENGDA ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the purposes of the present invention is to provide a system for producing succinic acid using natural gas as a raw material to solve the problems of high production cost and poor economy in the prior art

Method used

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  • System and method for producing succinic acid and PBS from natural gas
  • System and method for producing succinic acid and PBS from natural gas
  • System and method for producing succinic acid and PBS from natural gas

Examples

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Effect test

Embodiment 1

[0055] as attached figure 1 As shown, the system for producing succinic acid with natural gas provided by the present invention has simple structure, scientific and reasonable design, and is easy to use. The system for producing succinic acid with natural gas of the present invention includes an acetylene production device 1 connected with a natural gas delivery pipe 11 to produce acetylene from the natural gas it transports, a tail gas treatment device 2 and a succinic acid production device 3 .

[0056] The tail gas treatment equipment 2 of the present invention is connected from the acetylene production equipment 1, specifically, the acetylene tail gas delivery pipe 12 for transporting the acetylene tail gas is connected between the tail gas treatment equipment 2 and the acetylene production equipment 1;

[0057] The succinic acid production equipment 3 of the present invention is connected from the acetylene production equipment 1 and the tail gas treatment equipment 2 sim...

Embodiment 2

[0061] as attached figure 2 As shown, the system for producing PBS with natural gas provided by the present invention can produce succinic acid, 1,4-butanediol and PBS as required by adopting the system, and organically couples each intermediate raw material for producing PBS to maximize Reduce production costs, improve factory competitiveness and economic benefits. The system for producing PBS with natural gas of the present invention comprises the acetylene production equipment 1 that is connected with the natural gas delivery pipe 11 to produce acetylene with the natural gas that it transports, tail gas treatment equipment 2, succinic acid production equipment 3, methanol production equipment 4, formaldehyde Production equipment 5, butanediol production equipment 6 and PBS production equipment 7.

[0062] The tail gas treatment equipment 2 of the present invention is connected from the acetylene production equipment 1, specifically, the acetylene tail gas delivery pipe 12...

Embodiment 3

[0080] The method that adopts the system production succinic acid of the natural gas production succinic acid of embodiment 1 that the present invention provides, its steps are as follows:

[0081] Step 1. Input natural gas into acetylene production equipment, and obtain acetylene and acetylene tail gas respectively through non-catalytic partial oxidation;

[0082] Step 2. The acetylene tail gas enters the tail gas treatment equipment, and is separated by conversion and PSA to obtain CO and H respectively. 2 ;

[0083] Step 3. Combine part of the acetylene obtained in step 1 with the CO and H obtained in step 2 2 reaction to produce succinic acid;

[0084] Further, H 2 When there is a surplus in the production of succinic acid, it is used to provide hydrogen for hydrogenation vehicles to hydrogen energy hydrogenation stations.

[0085] In some embodiments of the present invention, acetylene, CO and H 2 Succinic acid was produced by a two-step method with a double carbonyl...

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Abstract

The invention discloses a system and method for producing succinic acid and PBS from natural gas, belongs to the technical field of chemical engineering, and solves the problems of high production cost and poor economy in the prior art. The system for producing succinic acid by using natural gas comprises acetylene production equipment connected with a natural gas conveying pipe, tail gas treatment equipment connected out of the acetylene production equipment, and succinic acid production equipment connected out of the acetylene production equipment and the tail gas treatment equipment at the same time. The system for producing PBS by using natural gas comprises a system for producing succinic acid, methanol production equipment connected out from tail gas treatment equipment, formaldehyde production equipment connected out from the methanol production equipment, butanediol production equipment connected out from the formaldehyde production equipment, the tail gas treatment equipment and acetylene production equipment at the same time, and PBS production equipment connected with the butanediol production equipment and the succinic acid production equipment. According to the method, all intermediate raw materials for producing PBS are organically coupled, so that the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a system and method for producing succinic acid and PBS with natural gas. Background technique [0002] PBS (polybutylene succinate) is a new biodegradable and environmentally friendly material, which is processed from polyester synthesized from succinic acid and 1,4-butanediol, of which succinic acid is its The raw material whose cost plays a decisive role, consumes 0.62 tons of raw material succinic acid per ton of PBS. With the promulgation of national environmental protection policies such as the plastic restriction order, under the guidance of the policy, the market share of PBS will continue to expand in the future. It is estimated that my country's demand for PBS will reach 3 million tons per year in the next five years, and the market demand for succinic acid will be 2.04 million tons per year. The long-term PBS and succinic acid market will reach a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/14C07C55/10C08G63/16C08G63/78
CPCC07C51/14C08G63/16C08G63/785C08G63/78C07C55/10
Inventor 唐卫新黄泽茂安勋王斌刘玉龙刘人滔王凯悦宋尧迟祥罗柱川
Owner CHINA CHENGDA ENG
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