Coal to acetylene plasma reactor having coking inhibition and online decoking functions

Patent metadata

Field	Value
Publication number	US-12544731-B2
Application number	US-202017777048-A
Country	US
Kind code	B2
Filing date	Sep 24, 2020
Priority date	Nov 14, 2019
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

The present invention discloses a coal-to-acetylene plasma reactor having coking inhibition and online decoking functions, comprising a vertically arranged cathode rod, an anode and a circulating cooling water jacket arranged outside the anode, the anode includes from top to bottom an anode of the electric arc operation section for cooperating with the cathode rod to generate an electric arc, and an anode of the reaction section located below the electric arc, the anode is grounded, the inner diameter of the anode of the reaction section is 1.2 to 10 times the inner diameter of the anode of the electric arc operation section, and the junction of the anode of the reaction section and the anode of the electric arc operation section is circumferentially provided with a decoking nozzle that can spray a decoking medium toward the anode of the reaction section. The present invention uses the method of changing the inner diameter of the reactor and setting nozzles for diaphragm protection, fundamentally suppressing or even eliminating the coking phenomenon during the operation of the reactor, no need to set the decoking cycle, and realizing the continuous cracking operation of the reactor.

First claim

The invention claimed is:

1 . A coal-to-acetylene plasma reactor having coking inhibition and online decoking functions, comprising a vertically arranged cathode rod, an anode and a circulating cooling water jacket arranged outside the anode, the anode comprising from top to bottom an anode of the electric arc operation section for cooperating with the cathode rod to generate an electric arc, and an anode of the reaction section located below the electric arc, wherein, the anode is grounded, an inner wall of the anode of the electric arc operation section is cylindrical, an inner wall of the anode of the reaction section is cylindrical, the inner diameter of the anode of the reaction section is 1.2 to 10 times the inner diameter of the anode of the electric arc operation section, and the junction of the anode of the reaction section and the anode of the electric arc operation section is circumferentially provided with a decoking nozzle that can spray a decoking medium toward the anode of the reaction section;
wherein, a top cover of the reactor comprises an opening for vertical insertion of the cathode rod and entry of pulverized coal, an entry direction of the pulverized coal is vertically straight down; wherein, a bottom of the anode of the reaction section is provided with a quenching nozzle, which spray a quenching medium for cooling the reaction product.

2 . The coal-to-acetylene plasma reactor having coking inhibition and online decoking functions according to claim 1 , wherein, the decoking medium is water, carbon dioxide or water vapor.

3 . The coal-to-acetylene plasma reactor having coking inhibition and online decoking functions according to claim 1 , wherein, an outer side of the anode of the electric arc operation section is provided with a coil that can generate a magnetic field when it is energized, and the electric arc forms a magnetic rotating arc under the action of the magnetic field.

4 . The coal-to-acetylene plasma reactor having coking inhibition and online decoking functions according to claim 1 , wherein, the number of the decoking nozzle is 6 to 36, which are evenly distributed along the circumferential direction of the anode.

5 . The coal-to-acetylene plasma reactor having coking inhibition and online decoking functions according to claim 1 , wherein, the operation mode of the decoking nozzle is intermittent spraying of the decoking medium.

6 . The coal-to-acetylene plasma reactor having coking inhibition and online decoking functions according to claim 5 , wherein, spraying interval time of the intermittent spraying of the decoking medium is 25-35 minutes, and duration of the spraying of the decoking medium is 2 to 3 minutes.

7 . The coal-to-acetylene plasma reactor having coking inhibition and online decoking functions according to claim 1 , wherein, the decoking nozzle is communicated with the circulating cooling water jacket, and the decoking medium is circulating cooling water.

8 . The coal-to-acetylene plasma reactor having coking inhibition and online decoking functions according to claim 1 , wherein, the circulating cooling water jacket comprises an independent circulating cooling water jacket in the electric arc operation section for cooling the anode of the electric arc operation section and a circulating cooling water jacket in the reaction section for cooling the anode of the reaction section.

9 . The coal-to-acetylene plasma reactor having coking inhibition and online decoking functions according to claim 8 , wherein, the decoking nozzle is communicated with the circulating cooling water jacket in the electric arc operation section.

10 . The coal-to-acetylene plasma reactor having coking inhibition and online decoking functions according to claim 7 , wherein, the circulating cooling water jacket comprises an independent circulating cooling water jacket in the electric arc operation section for cooling the anode of the electric arc operation section and a circulating cooling water jacket in the reaction section for cooling the anode of the reaction section.

Assignees

• Xinjiang Yuehetai Chemical Tech Co Ltd
• Univ Zhejiang

Inventors

• Yang Qiwei
• Wen Guangdong
• Ren Qilong
• Zhang Ming
• Li Rulong
• Wu Jianhua
• Wu Zhongbiao
• Chen Xinzhi
• Chen Fengqiu
• He Chaohong

Classifications

• B08B9/093

  by the force of jets or sprays ({B08B9/0813} , B08B9/20 take precedence) · CPC title

• B01J2219/0894

  Processes carried out in the presence of a plasma · CPC title

• B01J2219/185

  vertical · CPC title

• B01J2219/0879

  Solid · CPC title

• B01J2219/0847

  Glow discharge · CPC title