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Device and method for DMSO concentration process

A process and technology of concentration tower, which is applied in the device field of DMSO concentration process, can solve the problems of high energy consumption and high operating cost, and achieve the effects of reducing operating cost, safe and reliable operation, and reducing rectification temperature

Inactive Publication Date: 2021-10-29
常州乐研分离技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of device and method of DMSO concentration process, solve the problem that the concentration process of low-concentration dimethyl sulfoxide often adopts the mode of rectification device in the prior art to process, and its heat source is fresh steam, there is High energy consumption and high operating costs

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  • Device and method for DMSO concentration process

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Effect test

Embodiment 1

[0034] refer to figure 1, a device for the DMSO concentration process, including a stock solution buffer tank through which DMSO passes sequentially, a stock solution feed pump, a distilled water preheater, the first section of rectification and concentration tower, the first section of circulating pump, and the first section of falling film evaporator , material transfer pump, second-stage rectification and concentration tower, first-stage circulating pump, first-stage falling film evaporator, discharge pump, the heat exchange medium inlet of the distilled water preheater passes through the distilled water pump, the distilled water tank and the first The shell-side outlet of the falling film evaporator is connected, and the distilled water tank is provided with a condensate inlet connected to the inlet pipe of the compressor through the liquid accumulation pump, and is also provided with an interface connected to the drain of the top condenser; the first falling film evaporato...

Embodiment 2

[0036] The DMSO enrichment process method based on said device may further comprise the steps:

[0037] S1 Feed: The material to be processed is temporarily stored in the raw liquid buffer tank. After coming out of the tank, the raw liquid feed pump is pumped into the distilled water preheater for heat exchange and then enters the bottom of the first stage of rectification and concentration tower. The distilled water is preheated The heating medium of the heater is discharged from the distilled water tank, transported to the distilled water preheater by the distilled water pump, exchanges heat with the material and then is discharged out of the device after cooling.

[0038] S2 evaporation: After the material is discharged from the bottom of the first section of rectification and concentration tower, it is transported to the top of the first section of falling film evaporator by the first section of circulating pump, and the material at the top passes through the liquid distrib...

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Abstract

The invention relates to the technical field of DMSO concentration processes, in particular to a device and a method for a DMSO concentration process. The invention aims to solve the problems of high energy consumption and high operation cost due to the fact that low-concentration dimethyl sulfoxide is treated by adopting a rectification device in concentration processes in the prior art and fresh steam is used as a heat source. The invention relates to the device and the method for the DMSO concentration process. The device comprises a stock solution buffer tank, a stock solution feeding pump, a distilled water preheater, a first-section rectification concentration tower, a first-section circulating pump, a first-section falling-film evaporator, a material transfer pump, a second-section rectification concentration tower, a first-section circulating pump, a first-section falling-film evaporator and a discharging pump through which DMSO sequentially passes, wherein a heat exchange medium inlet of the distilled water preheater sequentially passes through a distillate pump. According to the invention, a vacuum system is adopted for negative pressure rectification, so the risk of DMSO leakage is effectively reduced; and meanwhile, the distillation temperature of DMSO can be effectively reduced, so heating steam with lower pressure can be selected, and operation cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of DMSO concentration process, in particular to a device and method for DMSO concentration process. Background technique [0002] Dimethylsulfoxide (DMSO) is a sulfur-containing organic compound. It is a colorless, odorless, transparent liquid at room temperature. Hygroscopic and flammable. Because of its high polarity, high boiling point, strong stability, and miscibility with water. And it is soluble in most organic substances such as ethanol, acetone, benzene, xylene and chloroform. It is an important chemical raw material and a chemical solvent with excellent performance. It is widely used in organic solvents and reaction media, especially in the polymerization of acrylonitrile as a processing solvent and spinning solvent, as a solvent for polyurethane synthesis and spinning, and as a synthetic solvent for polyamide, polyimide and polysulfone resin. and organic synthesis intermediates. It can also ...

Claims

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Application Information

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IPC IPC(8): B01D3/14B01D3/32
CPCB01D3/143B01D3/322
Inventor 马恩禄张爱华
Owner 常州乐研分离技术有限公司
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