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Preparation system and process of 1, 4-butanediol

A preparation system, butanediol technology, applied in the preparation of organic compounds, hydrogenation preparation, carbon-based compound preparation, etc., can solve the problems of inconvenience

Inactive Publication Date: 2021-03-09
NANJING YANCHANG REACTION TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In summary, there are obviously inconveniences and defects in the actual use of the existing technology, so it is necessary to improve

Method used

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  • Preparation system and process of 1, 4-butanediol
  • Preparation system and process of 1, 4-butanediol
  • Preparation system and process of 1, 4-butanediol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Step 1: Utilize the formaldehyde production device and the acetylene generation device to prepare formaldehyde and acetylene respectively;

[0057]Step 2: The formaldehyde and acetylene prepared in step 1 are subjected to acetylene aldehyde reaction in the reactor, and a catalyst is added in the acetylene aldehyde reaction to generate 1,4-butynediol; the catalyst in the acetylene aldehyde reaction is SiO 2 , the reaction temperature is 80 ℃, and the reaction pressure in the reactor is 1MPa;

[0058] Step 3: The 1,4-butynediol prepared in step 2 is subjected to hydrogenation reaction in an external reactor, the hydrogenation reaction is two-stage hydrogenation, and the first-stage hydrogenation reaction is carried out in a low-pressure hydrogenation system. It is a Ni-based catalyst, and the reaction pressure is 2MPa; the second-stage hydrogenation reaction is carried out in a high-pressure system, the catalyst used is a Pd-based catalyst, and the reaction pressure is 10...

Embodiment 2

[0062] Step 1: Utilize the formaldehyde production device and the acetylene generation device to prepare formaldehyde and acetylene respectively;

[0063] Step 2: The formaldehyde and acetylene prepared in step 1 are subjected to acetylene aldehyde reaction in the reactor, and a catalyst is added in the acetylene aldehyde reaction to generate 1,4-butynediol; the catalyst in the acetylene aldehyde reaction is SiO 2 , the reaction temperature is 80 ℃, and the reaction pressure in the reactor is 1MPa;

[0064] Step 3: The 1,4-butynediol prepared in step 2 is subjected to hydrogenation reaction in an external reactor, the hydrogenation reaction is two-stage hydrogenation, and the first-stage hydrogenation reaction is carried out in a low-pressure hydrogenation system. It is a Ni-based catalyst, and the reaction pressure is 2MPa; the second-stage hydrogenation reaction is carried out in a high-pressure system, the catalyst used is a Pd-based catalyst, and the reaction pressure is 1...

Embodiment 3

[0068] Step 1: Utilize the formaldehyde production device and the acetylene generation device to prepare formaldehyde and acetylene respectively;

[0069] Step 2: The formaldehyde and acetylene prepared in step 1 are subjected to acetylene aldehyde reaction in the reactor, and a catalyst is added in the acetylene aldehyde reaction to generate 1,4-butynediol; the catalyst in the acetylene aldehyde reaction is SiO 2 , the reaction temperature is 80 ℃, and the reaction pressure in the reactor is 1MPa;

[0070] Step 3: The 1,4-butynediol prepared in step 2 is subjected to hydrogenation reaction in an external reactor, the hydrogenation reaction is two-stage hydrogenation, and the first-stage hydrogenation reaction is carried out in a low-pressure hydrogenation system. It is a Ni-based catalyst, and the reaction pressure is 2MPa; the second-stage hydrogenation reaction is carried out in a high-pressure system, the catalyst used is a Pd-based catalyst, and the reaction pressure is 1...

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Abstract

The invention is applicable to the technical field of preparation of 1, 4-butanediol, and provides a preparation system and process of 1, 4-butanediol, which comprises a formaldehyde production device, an acetylene generation device, a micro-interface generator, a separation subsystem and a hydrogenation system, the output ends of the formaldehyde production device and the acetylene generation device are connected with an ethynylation reaction device through a first micro-interface generator; the output end of the separation subsystem is connected with the hydrogenation system through a secondmicro-interface generator, the formaldehyde production device comprises a heating system, a reaction system and a product collection system which are connected with one another, and the reaction system comprises a fire retardant filter, a reactor and an absorption tower; and a heater comprises a first heater and a second heater. Therefore, by improving the traditional 1, 4-butanediol production process, the reaction efficiency is improved while the equipment upgrading cost of enterprises is reduced.

Description

technical field [0001] The invention relates to the technical field of preparation of 1,4-butanediol, in particular to a preparation system and process of 1,4-butanediol. Background technique [0002] 1,4-Butanediol is an important basic organic chemical and fine chemical raw material. It has a wide range of uses, especially its derivatives are fine chemical products with high added value, which are widely used as solvents, medicines, cosmetics, plasticizers, curing agents, pesticides, herbicides, artificial leather, fibers, engineering plastics, etc. 1,4-Butanediol is also used in the manufacture of tetrahydrofuran (THF), γ-butyrolactone (GBL), N-methylpyrrolidone (NMP) and the like. In recent years, PBT (polybutylene terephthalate) is mainly used in the fields of PBT modification, PBT drawing, film drawing, optical fiber sheathing, etc. After enhanced modification, it can be widely used in automobile manufacturing, electronic and electrical, instrumentation Instruments, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/17C07C31/20C07C29/42C07C33/046C07C29/82B01J19/00B01J8/06
CPCB01J8/0242B01J8/06B01J19/0046C07C29/17C07C29/42C07C29/82C07C31/207C07C33/046B01J19/00C07C29/44C07C29/80C07C31/20C07C45/38
Inventor 张志炳周政孟为民王宝荣杨高东罗华勋张锋李磊杨国强田洪舟曹宇
Owner NANJING YANCHANG REACTION TECH RES INST CO LTD
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