Solvent water treatment system for 2-chloropropionylchloride

Abstract

The invention relates to a solvent water treatment system for 2-chloropropionylchloride. The solvent water treatment system comprises a solvent water pipeline, a steam pipeline, a condensed water preheating device, a desolvation treatment device, a desolvation evaporating device, a solvent collecting device and a condensed water collecting device, wherein the condensed water preheating device is provided with a steam inlet, a solvent water inlet, a solvent water outlet and a condensed water outlet; the solvent water pipeline is fixedly connected with the solvent water inlet of the condensed water preheating device; the steam pipeline is fixedly connected with the steam inlet of the condensed water preheating device; the desolvation treatment device comprises a first and a second inlets and a first and a second outlets, wherein the second inlet is fixedly connected with the steam pipeline; the first inlet is fixedly connected with the solvent water outlet of the condensed water preheating device; the second outlet is fixedly connected with the solvent collecting device and the first outlet is fixedly connected with the inlet of the desolvation evaporation device; and the condensed water collecting device is fixedly connected with the condensed water outlet of the condensed water preheating device. The desolvation evaporation device includes a heater, an evaporimeter, a circulating pump, a compressor and a separator, wherein the heater, the evaporimeter and the circulating pump form a closed loop pipe connection, the heater, the evaporimeter, the separator and the compressor form a closed loop pipe connection, the heater and the condensed water preheating device are fixedly connected to each other, the heater is a horizontal type tubular heat exchanger, and an outlet of the condensed water collecting device is connected to a vacuum unit.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a solvent water treatment system. Background technique [0002] In the industrialized production process of 2-chloropropionyl chloride, an intermediate in the manufacture of alanyl-glutamine, waste water such as high salt, waste acid, and organic oily matter is often produced, and the high-boiler waste water is very acidic and has For many organic solvents, the salt content reaches the saturation concentration, and it is difficult to meet the requirements of entering the biochemical system by physical and chemical methods. Since the salt content in the salt washing wastewater reaches saturation, it needs to be desalted and then enter the follow-up treatment link. The whole concentrated wastewater part needs to be processed Catalytic oxidation + precipitation + desalination can enter the biochemical system. This method is expensive and cannot be widely used, and it will inevitably p...

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Problems solved by technology

[0002] In the industrialized production process of 2-chloropropionyl chloride, an intermediate in the manufacture of alanyl-glutamine, waste water such as high salt, waste acid, and organic oily matter is often produced, and the high-boiler waste water is very acidic and has For many organic solvents, the salt content reaches the saturation concentration, and it is difficult to meet the requirements of entering the biochemical system by physical and chemical methods. Since the salt content in the salt washing wastewater reaches saturation, it needs to be desalted and then enter the follow-up treatment link. The whole concentrated wastewater part needs to be processed Catalytic oxidation + precipitation + desalination can enter the biochemical system. This method is expensive and cannot be widely used, and it will inevitably produce secondary pollution. It mainly refers to the production of chemical flocculants and decomposers. Not only does it require a lot of energy consumption , the production process will also discharge a large amount of waste water and waste gas to pollute the environment, which cannot completely solve the problem

[0003] Using microbial decomposition method, although there is no need to add chemical decomposition agents, flocculants, etc., but the inherent problems of "slow decomposition speed, large investment in equipment, especially large footprint and great influence by ambient temperature have not been very good. For example, it cannot be used for at least half a year in the northern region (the decomposition ability will be significantly reduced when the ambient temperature is lower than 15°C above zero, and it will basically stop working at 8°C above zero. It is determined by the life law of microorganisms, and it is impossible to break through This rule), which is the most fatal and insurmountable shortcoming of microbial decomposition

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