Production system and method for insoluble sulfur

Patent metadata

Field	Value
Publication number	US-12465903-B2
Application number	US-202017758287-A
Country	US
Kind code	B2
Filing date	Dec 28, 2020
Priority date	Dec 31, 2019
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

A production system for insoluble sulfur includes a polymeric kettle having a first discharge port and a quench tower (200) having a feed port. The first discharge port is in communication with the feed port. The quench tower has a cylindrical housing, a granulation device and a shear pump. A solvent inlet and a quenching agent inlet, which are respectively used for providing a solvent and a quenching agent, are arranged on the side wall of the housing. The sulfur production method includes raising the temperature of liquid sulfur under the protection of an initiator and nitrogen to perform polymerization reaction; introducing the polymerized material into the quenching tower and sequentially carrying out granulation and quenching treatment; carrying out solvent curing and extraction integrated treatment on the quenched product; and carrying out liquid phase circulating crushing and extraction integrated treatment on the cured and extracted product.

First claim

The invention claimed is:

1 . An insoluble sulfur production system, comprising a cooler ( 300 ) and a kettle ( 100 ) having a first discharge port and a quenching tower ( 200 ) having a feed port, wherein the first discharge port is in communication with the feed port, and
the quenching tower ( 200 ) comprises a housing ( 210 ) that is cylindrical in shape, a granulation device ( 220 ) and a shear pump ( 230 ), the housing ( 210 ) has a feed quenching section ( 211 ) and a discharging section ( 213 ) that are arranged from top to bottom, and a side wall of the housing ( 210 ) is provided with a solvent inlet ( 214 ) for providing a solvent and a quenching agent inlet ( 215 ) for providing a quenchant, wherein: the feed port is arranged on the feed quenching section ( 211 ), and the granulation device ( 220 ) is disposed in the feed quenching section ( 211 ); the discharging section ( 213 ) is provided with a second discharge port and a filter screen ( 260 ) above the second discharge port, and a side wall of the discharging section ( 213 ) above the filter screen ( 260 ) is provided with a circulating outlet and a circulating inlet in communication with an inlet and an outlet of the shear pump ( 230 ), respectively, and the housing ( 210 ) comprises a material separation section ( 216 ) for solid-liquid separation and a material circulation section ( 212 ) for circulating the materials between the feed quenching section ( 211 ) and the discharging section ( 213 ), an inner cylinder ( 240 ) and a device ( 250 ) for spraying a quenchant or solvent into the inner cylinder ( 240 ) are arranged in the material circulating section ( 212 ), and a circulating liquid outlet ( 217 ) for discharging the separated liquid is arranged in the side wall of a material separating section ( 216 ), the liquid discharged from the circulating liquid outlet ( 217 ) is cooled by the cooler ( 300 ) and sent by the circulating pump ( 280 ) to the circulating inlet, the circulating inlet is in communication with the device ( 250 ).

2 . The insoluble sulfur production system according to claim 1 , wherein a conical cylinder-shaped circulating flow guide plate ( 241 ) expanding downward gradually is arranged on the periphery at the top of the inner cylinder ( 240 ), with clearance between the circulating flow guide plate ( 241 ) and the inner wall of the housing ( 210 ); preferably, the radius of the lower end of the circulating flow guide plate ( 241 ) is 0.5-0.9 times of the radius of the housing ( 210 ).

3 . The insoluble sulfur production system according to claim 2 , wherein the inner wall of the material separation section ( 216 ) is provided with a conical cylinder-shaped material flow guide plate ( 218 ) tapered toward the inner cylinder ( 240 ), and the material flow guide plate ( 218 ) is above the circulating liquid outlet ( 217 ); preferably, the material flow guide plate ( 218 ) is configured in at least one of the following forms:
a. the distance from the lower end of the material flow guide plate ( 218 ) to the upper end of the circulating flow guide plate ( 241 ) is equal to the diameter of the inner cylinder ( 240 ); b. the radius of the lower end of the material flow guide plate ( 218 ) is 0.5-0.9 times of the radius of the inner cylinder ( 240 ); c. the height of the material flow guide plate ( 218 ) is 0.7-1.4 times of the radius of the upper end of the material flow guide plate ( 218 ).

4 . The insoluble sulfur production system according to claim 2 , the insoluble sulfur production system configured in at least one of the following forms:
a. the diameter of the inner cylinder ( 240 ) is 0.4-0.8 times of the diameter of the housing ( 210 ); b. the distance from the lower end of the inner cylinder ( 240 ) to the filter screen ( 260 ) is 0.1-0.5 meters; c. the height of the inner cylinder ( 240 ) is 2-6 times of the diameter of the inner cylinder ( 240 ); d. the distance from the filter screen ( 260 ) to the bottom enclosure of the housing ( 210 ) is 0.5-1 meters; e. the filter screen ( 260 ) is in the same shape as the bottom enclosure of the housing ( 210 ).

5 . The insoluble sulfur production system according to claim 1 , wherein the solvent inlet ( 214 ) and the quenching agent inlet ( 215 ) are arranged in the side wall of the feed quenching section ( 211 ).

6 . The insoluble sulfur production system according to claim 1 , wherein the granulation device ( 220 ) comprises a first feed pipe ( 221 ) in communication with the feed port and a first distribution pipe ( 222 ) in communication with the first feed pipe ( 221 ), the first distribution pipe ( 222 ) comprises a first fixed pipe ( 2221 ) and a first rotary pipe ( 2222 ) that is sleeved on the first fixed pipe ( 2221 ) and can rotate with respect to the first fixed pipe ( 2221 ), the pipe wall of the first fixed pipe ( 2221 ) is provided with a first discharge channel ( 2223 ) extending in the axial direction, the pipe wall of the first rotary pipe ( 2222 ) is provided with multiple groups of first discharge holes ( 2224 ) that can correspond to the first discharge channel ( 2223 ), each group of first discharge holes ( 2224 ) are arranged in the axial direction, and the multiple groups of first discharge holes ( 2224 ) are distributed in the circumferential direction of the first rotary pipe ( 2222 ).

7 . The insoluble sulfur production system according to claim 6 , wherein the feed quenching section ( 221211 ) is provided with a quenchant distributor ( 270 ), which comprises a second feed pipe ( 271 ) in communication with the quenching agent inlet ( 215 ) and a second distribution pipe ( 272 ) in communication with the second feed pipe ( 271 ), wherein the second distribution pipe ( 272 ) is arranged in parallel to the first distribution pipe ( 222 ), the setting height of the second distribution pipe ( 272 ) is lower than the first distribution pipe ( 222 ), and the second distribution pipe ( 272 ) comprises a second fixed pipe ( 2721 ) and a second rotary pipe ( 2722 ) that is sleeved on the second fixed pipe ( 2721 ) and can rotate with respect to the second fixed pipe ( 2721 ), the pipe wall of the second fixed pipe ( 2721 ) is provided with a second discharge channel ( 2723 ) extending in the axial direction, the pipe wall of the second rotary pipe ( 2722 ) is provided with multiple second discharge holes ( 2724 ) that can correspond to the second discharge channel ( 2723 ) and are distributed in the circumferential direction of the second rotary pipe ( 2722 ), the outer wall of the second rotary pipe ( 2722 ) is provided with a doctor blade ( 273 ) that can come into contact with the outer wall of the first rotary pipe ( 2222 ), the first discharge channel ( 2223 ) is arranged toward the second distribution pipe ( 272 ), and the second discharge channel ( 2723 ) is arranged offset from the first distribution pipe ( 222 ).

8 . The insoluble sulfur production system according to claim 7 , wherein the doctor blade ( 273 ) is a stainless steel blade, and/or the first distribution pipe ( 222 ) and the second distribution pipe ( 272 ) are a plurality of distribution pipes that are arranged corresponding to each other alternatively, the plurality of first distribution pipes ( 222 ) are arranged side by side, the plurality of second distribution pipes ( 272 ) are arranged side by side, and a connecting line between the centers of cross sections of a first distribution pipe ( 222 ) and a corresponding second distribution pipe ( 272 ) in the same plane is at 40-50° with respect to the plane of arrangement of the first distribution pipes ( 222 ).

9 . The insoluble sulfur production system according to claim 7 , wherein:
the first discharge holes ( 2224 ) are in diameter of 0.5-

Assignees

• China Petroleum & Chem Corp
• Sinopec Dalian Res Inst Petroleum & Petrochemicals Co Ltd

Inventors

• Zhou Yong
• Liao Changjian
• Meng Fanfei
• Liu Zhiyu
• Wang Haibo
• Jin Ping
• Dai Jinling
• Liu Ping
• Piao Yong

Classifications

• C01B17/12 Primary

  Insoluble sulfur (mu-sulfur) · CPC title

• C01B17/0237

  Converting into particles, e.g. by granulation, milling · CPC title

• C01B17/0232

  Purification, e.g. degassing · CPC title

• B01J19/2415

  Tubular reactors · CPC title

• Y02P20/10

  Process efficiency · CPC title