CN-121988269-A - Tubular reactor for preparing vinyl ether and production equipment

CN121988269ACN 121988269 ACN121988269 ACN 121988269ACN-121988269-A

Abstract

The invention discloses a tubular reactor for preparing vinyl ether and production equipment thereof, wherein the tubular reactor comprises a plurality of tubular reaction units and a temperature control unit, each tubular reaction unit comprises a reaction tube and an outer sleeve, the outer sleeve is sleeved on the reaction tube to form a heat conducting cavity, the reaction tubes of the tubular reaction units are sequentially communicated end to end, the temperature control unit comprises a circulating storage tank, a circulating pipe, a radiator and a circulating pump, the circulating pipe is sequentially communicated with each heat conducting cavity and the circulating storage tank along the opposite direction of material flow in the reaction tube, and the circulating pump and the radiator are arranged on the circulating pipe. The production facility includes a tubular reactor for preparing vinyl ether. Compared with the prior art, the circulating pipe of the tubular reactor provided by the invention is sequentially communicated with each heat conducting cavity along the direction opposite to the material flow in the reaction pipe, so that the temperature of the front section is higher, the reaction rate is greatly improved by utilizing high temperature, the reaction is started quickly, the temperature of the rear section is relatively lower, and the final conversion rate is improved in the whole production flow.

Inventors

FENG QINGCHENG
HUANG KAIWEI
PENG CHANGLIANG
SONG TIANXIANG
SHU CHAO
Cui Xianmiao
WANG LIANG
WU HONGTE
WANG ZHEN
TENG JINLIANG
Yue Shiwen
SONG WENHUA

Assignees

湖北吉和昌化工科技有限公司

Dates

Publication Date: 20260508
Application Date: 20251231

Claims (10)

1. A tubular reactor for preparing vinyl ethers, comprising: each tubular reaction unit comprises a reaction tube and an outer sleeve, the outer sleeve is sleeved on the reaction tube to form a heat conduction cavity, and the reaction tubes of the tubular reaction units are sequentially communicated end to end; The temperature control unit comprises a circulating storage tank, a circulating pipe, a radiator and a circulating pump, wherein the circulating pipe is sequentially communicated with each heat conducting cavity and the circulating storage tank along the direction opposite to the material flow in the reaction pipe to form a closed pipeline, the circulating pump is arranged on the circulating pipe to drive a heat conducting medium to flow in the circulating pipe, and the radiator is arranged on the circulating pipe to radiate heat of the heat conducting medium.
2. The tubular reactor for preparing vinyl ether according to claim 1, wherein each of the tubular reaction units is arranged in sequence in a height direction, and the tubular reaction unit located upstream is located below the tubular reaction unit located downstream in a material flow direction in the reaction tube, and the reaction tube located in the outer jacket is arranged horizontally.
3. The tubular reactor for preparing vinyl ether according to claim 2, wherein the outer jacket tube has a heat conducting inlet through which a heat conducting medium flows in and a heat conducting outlet through which a heat conducting medium flows out, the heat conducting inlet being located at an upper top surface of the outer jacket tube, and the heat conducting outlet being located at a lower bottom surface of the outer jacket tube.
4. The tubular reactor for preparing vinyl ether according to claim 2, wherein the tubular reaction unit further comprises a flow equalizing sleeve fixedly arranged in the heat conducting cavity and sleeved on the reaction tube, and the flow equalizing sleeve is provided with a plurality of uniformly distributed through holes.
5. The pipe reactor for preparing vinyl ether according to claim 4, further comprising a rapid cooling unit, wherein the rapid cooling unit comprises a low-temperature storage tank and a plurality of rapid filling pipes, the low-temperature storage tank is stored with heat conducting media, the rapid filling pipes are in one-to-one correspondence with the pipe reaction units, the rapid filling pipes are communicated with the low-temperature storage tank and the heat conducting cavities, and filling valves are arranged on the rapid filling pipes.
6. The pipe reactor for preparing vinyl ether according to claim 5, wherein the rapid cooling unit further comprises a plurality of rapid discharge pipes in one-to-one correspondence with the pipe reaction units, the rapid discharge pipes are communicated with the circulation storage tank and the heat conduction chamber, and a discharge valve is provided on the rapid discharge pipes.
7. The pipe reactor for preparing vinyl ether according to claim 6, wherein the rapid cooling unit further comprises a liquid supplementing pipe, the liquid supplementing pipe is communicated with the circulating pipe and the low-temperature storage tank, the joint of the liquid supplementing pipe and the circulating pipe is positioned between the radiator and the outer sleeve, and the liquid supplementing valve is arranged on the liquid supplementing pipe.
8. The tube reactor for preparing vinyl ether according to claim 6, wherein the flow equalization sleeve has a rapid inlet formed at an upper top surface thereof and a rapid outlet formed at a lower bottom surface thereof, the rapid inlet being communicated with the rapid inlet by the rapid filling pipe, and the rapid outlet being communicated with the rapid outlet by the rapid discharging pipe.
9. The tubular reactor for preparing vinyl ether according to claim 1, wherein a temperature sensor and a pressure sensor are provided in each of the reaction tubes.
10. A production apparatus for producing a vinyl ether, comprising the tubular reactor for producing a vinyl ether according to any one of claims 1 to 9.

Description

Tubular reactor for preparing vinyl ether and production equipment Technical Field The invention relates to the technical field of vinyl ether production and manufacturing, in particular to a tubular reactor for preparing vinyl ether and production equipment. Background Vinyl ether compounds are important chemical intermediates and pharmaceutical intermediates, and are widely applied to the fields of medicines, cosmetics, paints, adhesives and the like. The preparation method mainly comprises an acetylene method, an acetal thermal decomposition method and the like. The reaction for producing vinyl ethers from acetylene and alcohols is thermodynamically a strongly exothermic reaction and can proceed spontaneously over a typical industrial temperature range (about 10 ℃ to 90 ℃). And the lower the temperature is, the larger the reaction equilibrium constant is, the more thorough the reaction is, and the higher the safety is. At the same time, however, the lower the temperature, the longer the reaction time, and the lower the production efficiency. Resulting in difficulty in the production efficiency and conversion rate in the production of vinyl ether. Disclosure of Invention The invention aims to overcome the technical defects, and provides a tubular reactor and production equipment for preparing vinyl ether, which solve the technical problem that the production efficiency and the conversion rate are difficult to be compatible in the prior art. In order to achieve the technical purpose, the invention adopts the following technical scheme: In a first aspect, the present invention provides a tubular reactor for preparing vinyl ether, comprising a plurality of tubular reaction units and a temperature control unit, Each tubular reaction unit comprises a reaction tube and an outer sleeve, the outer sleeve is sleeved on the reaction tube to form a heat conduction cavity, and the reaction tubes of the tubular reaction units are sequentially communicated end to end; the temperature control unit comprises a circulating storage tank, a circulating pipe, a radiator and a circulating pump, wherein the circulating pipe is sequentially communicated with each heat conducting cavity and the circulating storage tank along the direction opposite to the material flow in the reaction pipe to form a closed pipeline, the circulating pump is arranged on the circulating pipe to drive a heat conducting medium to flow in the circulating pipe, and the radiator is arranged on the circulating pipe to radiate heat of the heat conducting medium. In some embodiments, the tubular reaction units are arranged in sequence along the height direction, the upstream tubular reaction unit is positioned below the downstream tubular reaction unit along the material flow direction in the reaction tube, and the reaction tube positioned in the outer sleeve is horizontally arranged. In some embodiments, the outer sleeve has a heat conducting inlet for inflow of a heat conducting medium and a heat conducting outlet for outflow of the heat conducting medium, the heat conducting inlet being located at an upper top surface of the outer sleeve, the heat conducting outlet being located at a lower bottom surface of the outer sleeve. In some embodiments, the tubular reaction unit further comprises a flow equalization sleeve fixedly disposed in the heat conduction cavity and sleeved on the reaction tube, wherein the flow equalization sleeve has a plurality of uniformly distributed through holes. In some embodiments, the rapid cooling unit further comprises a low-temperature storage tank and a plurality of rapid filling pipes, wherein heat conducting media are stored in the low-temperature storage tank, the rapid filling pipes are in one-to-one correspondence with the tubular reaction units, the rapid filling pipes are communicated with the low-temperature storage tank and the heat conducting cavities, and filling valves are arranged on the rapid filling pipes. In some embodiments, the rapid cooling unit further comprises a plurality of rapid discharge pipes corresponding to the tubular reaction units one by one, the rapid discharge pipes are communicated with the circulation storage tank and the heat conducting cavity, and discharge valves are arranged on the rapid discharge pipes. In some embodiments, the rapid cooling unit further comprises a fluid supplementing pipe, the fluid supplementing pipe is communicated with the circulating pipe and the low-temperature storage tank, the joint of the fluid supplementing pipe and the circulating pipe is positioned between the radiator and the outer sleeve, and the fluid supplementing pipe is provided with a fluid supplementing valve. In some embodiments, the flow equalization sleeve has a fast inlet formed in an upper top surface and a fast outlet formed in a lower bottom surface, the fast fill tube communicates with the fast inlet, and the fast drain communicates with the fast outlet. In some embodiments, a temperature s