Thionyl chloride differential pressure thermal coupling rectification method and equipment

A differential pressure thermal coupling, thionyl chloride technology, applied in the fields of sulfur and halogen compounds, fractionation, chemical industry, etc., can solve the problems of high energy consumption, non-compliance with energy saving and emission reduction, and achieve energy saving and conveying equipment saving. and corresponding pipelines to achieve the effect of continuous production

Active Publication Date: 2016-08-17
SHANDONG KAISHENG NEW MATERIALS
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  • Claims
  • Application Information

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Problems solved by technology

For now, there are no patents on the energy-saving process of the thionyl chloride rectification system at home and abroad, and the original rectification method used by almost all manufacturers has high energy consumption and does not meet the national energy-saving and emission-reduction needs.

Method used

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  • Thionyl chloride differential pressure thermal coupling rectification method and equipment
  • Thionyl chloride differential pressure thermal coupling rectification method and equipment
  • Thionyl chloride differential pressure thermal coupling rectification method and equipment

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, technology and equipment provided by the present invention are further described:

[0024] The main equipments involved in the present invention are: the weight removal tower (2) with the reboiler (5) at the bottom of the tower, the light removal tower (18) with the condenser (20) at the top of the tower, the weight removal tower (2) and the weight removal tower (2). A condensing reboiler (10), an auxiliary condenser (12) and a conversion reactor (16) are arranged between the light tower (18), and the vapor phase material at the top of the heavy removal tower (2) is divided into two parts: One part is connected to the inlet of the heating medium of the condensing reboiler (10), the outlet of the heating medium is connected to the auxiliary condenser (12), and then returned to the top of the de-weighting tower (2), and the outlet of the liquid phase material at the bottom of the de-lighting tower is connected to To the inle...

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Abstract

The invention relates to a differential pressure thermal coupling rectification method and equipment for sulfoxide chloride. According to the equipment, a heavy component removing tower of a re-boiler is arranged at the bottom of a tower and a light component removing tower of a condenser is arranged at the top of the tower; a condensation re-boiler, an auxiliary condenser and a conversion reactor are arranged between the heavy component removing tower and the light component removing tower. An extract of a vapor-phase material at the top of the heavy component removing tower is divided into two parts, wherein one part is connected with a heating medium inlet of the condensation re-boiler, a heating medium outlet is connected with the auxiliary condenser and then returns back to the top of the heavy component removing tower, a liquid-phase material outlet at the bottom of the light component removing tower is connected with a heated medium inlet of the condensation re-boiler, and then a heated medium outlet returns back to the bottom of the light component removing tower; the other part is connected with the conversion reactor to carry out a reaction of converting sulfur dichloride to sulfur chloride, and a reacted material vapor phase enters the light component removing tower. The differential pressure thermal coupling is used for coupling heat at the top of the heavy component removing tower and heat at the bottom of the light component removing tower and the energy consumption is saved. The difficulty of blocking a pipeline by sulfur is overcome. A practical example shows that a differential pressure thermal coupling rectification process can save energy by more than 50% compared with a conventional process.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and in particular relates to a rectification method and equipment for sulfur oxychloride differential pressure thermal coupling. Background technique [0002] Thionyl chloride is a colorless or pale yellow liquid with a pungent odor at normal temperature and pressure. It will decompose in a small amount above the boiling point (78.8°C). The decomposition rate is faster at 140°C. The products are sulfur dioxide, chlorine, sulfur dichloride and sulfur monochloride. Because of its strong chlorination and acyl chloride ability, it is an important chemical intermediate and widely used in traditional industries such as agriculture, medicine and dyes. . In addition, the scope of application of thionyl chloride is also expanding, and the downstream fields are gradually increasing. It has been used in food additive industries such as the preparation of sucralose and new energy industries such...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D3/14C01B17/45
CPCY02P20/10
Inventor 张善民黄国强张清新谢圣斌毕义霞靳权
Owner SHANDONG KAISHENG NEW MATERIALS
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