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Continuous sulfur addition device and method for sulfur oxychloride sulfur compounding system

A technology of thionyl chloride and sulfur adding device, which is applied in the direction of chemical instruments and methods, thionyl chloride, sulfur and halogen compounds, etc., to achieve the effects of ensuring continuity, convenient maintenance, and easy popularization and promotion

Active Publication Date: 2021-08-27
安徽金轩科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a continuous sulfur addition device and method for the sulfur oxychloride sulfur compounding system in order to solve the problems existing in the incomplete sulfur compounding method used in the production of sulfur oxychloride. Before the rectification system, liquid sulfur is used in the pipeline reactor to carry out sulfur compounding on the crude thionyl chloride; the sulfur compounding method is continuous feeding and continuous discharging

Method used

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  • Continuous sulfur addition device and method for sulfur oxychloride sulfur compounding system

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Effect test

Embodiment 1

[0026] A method for continuously adding sulfur to a sulfur oxychloride compounding system, the specific implementation steps are as follows:

[0027] (1) The liquid sulfur in the sulfur melting tank is pumped into the pipeline reactor through the jacket pipe by the first machine pump, and the flow rate is controlled at 350kg / h. The temperature of the steam in the jacket pipe is 160°C. In the jacket pipe, pay attention to Hydrophobic to prevent uneven steam flow, forming a dead zone, and causing sulfur plugging accidents;

[0028] (2) The crude thionyl chloride (temperature 50°C, containing 70% thionyl chloride, 25% sulfur dichloride, the rest is a small amount of chlorine and sulfur monochloride) is pumped into the pipeline reactor by the second machine , control flow at 4600kg / h;

[0029] (3) Control the mixing of the crude thionyl chloride and the liquid sulfur in the molten sulfur tank at the entrance of the pipeline reactor, and control the temperature of the pipeline rea...

Embodiment 2

[0031] A method for continuously adding sulfur to a sulfur oxychloride compounding system, the specific implementation steps are as follows:

[0032] (1) The liquid sulfur in the sulfur melting tank is pumped into the pipeline reactor through the jacketed pipe by the first pump, and the flow rate is controlled at 300kg / h. The temperature of the steam in the jacketed pipe is 160°C. In the jacketed pipe, pay attention to Hydrophobic to prevent uneven steam flow, forming a dead zone, and causing sulfur plugging accidents;

[0033] (2) The crude thionyl chloride (temperature 55°C, containing 71% thionyl chloride, 24% sulfur dichloride, the rest is a small amount of chlorine and sulfur monochloride) is pumped into the pipeline reactor by the second machine , control flow at 4000kg / h;

[0034] (3) Control the mixing of the crude thionyl chloride and the liquid sulfur in the molten sulfur tank at the entrance of the pipeline reactor, and control the temperature of the pipeline react...

Embodiment 3

[0036] A method for continuously adding sulfur to a sulfur oxychloride compounding system, the specific implementation steps are as follows:

[0037] (1) The liquid sulfur in the sulfur melting tank is pumped into the pipeline reactor through the jacketed pipe by the first machine pump, and the flow rate is controlled at 250kg / h. The temperature of the steam in the jacketed pipe is 162°C. In the jacketed pipe, pay attention to Hydrophobic to prevent uneven steam flow, forming a dead zone, and causing sulfur plugging accidents;

[0038] (2) The crude thionyl chloride (temperature 53°C, containing 74% thionyl chloride, 20% sulfur dichloride, and the rest is a small amount of chlorine and sulfur monochloride) is pumped into the pipeline reactor by the second machine , control flow at 4000kg / h;

[0039] (3) Control the mixing of the crude thionyl chloride and the liquid sulfur in the molten sulfur tank at the entrance of the pipeline reactor, and control the temperature of the pi...

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Abstract

The present invention is a continuous sulfur adding device and method for sulfur oxychloride sulfur mixing system, which is characterized in that: (1) the liquid sulfur in the sulfur melting tank is pumped into the pipeline reactor through the jacket pipe by the first machine pump, and the flow rate is controlled At 350-500kg / h, the temperature of the steam in the jacketed tube is 160-168°C, and the pressure is 0.4-0.6MPa; (2) The crude sulfur oxychloride liquid is pumped into the pipeline reactor by the second machine, and the control The flow rate is 4600-4800 kg / h; (3) Control the mixing of crude thionyl chloride and liquid sulfur at the inlet of the pipeline reactor, and control the temperature of the pipeline reactor by controlling the opening of the circulating water inlet valve of the pipeline reactor jacket The temperature is 45~65°C. After the reaction, it enters the buffer tank and waits for the rectification system to carry out rectification and purification of thionyl chloride. The advantages of the present invention are that the reactor is a pipeline reactor, compared with kettle-type sulfur blending, it reduces power consumption, is convenient for maintenance, the fluid is strongly disturbed in the reactor, and the mixing is more uniform, which can ensure the continuity of operation and improve production efficiency.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and relates to a continuous sulfur addition device and method for a sulfur oxychloride sulfur compounding system. Background technique [0002] Thionyl chloride is an important inorganic fine chemical product, which is widely used in pharmaceutical, pesticide, dyestuff, chemical industry and organic synthesis reactions, such as chlorination of alcoholic hydroxyl, chlorination of carboxylic acid, chlorination of acid anhydride Chlorination, chlorine replacement of organic sulfonic acid or nitro compounds, manufacture of acyl chlorides, and can also be used for ring closure reactions and Beckmann transpositions. It is an important chemical intermediate and is widely used in agriculture, medicine, dyes, etc. Traditional industries and food additive industries such as sucralose and new energy industries such as lithium batteries. [0003] The production methods of thionyl chloride mainly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/06B01J8/00B01D3/14B01D3/32C01B17/45
CPCB01D3/14B01D3/32B01J8/001B01J8/06C01B17/4584
Inventor 孙多龙颜作标罗艺飞
Owner 安徽金轩科技有限公司
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