Recovery and treatment device and treatment process of butyl-octyl alcohol condensation maintenance waste liquid

Abstract

The invention discloses a recovery treatment device and a treatment process for butanol condensation maintenance waste liquid, belonging to the field of octanol production equipment. Condensation reaction loop formed by two condensation reactors, mechanical seal (1), four circulating pumps, feed pipeline (9) and discharge pipeline (4), the condensation reactor and mechanical seal (1) are respectively connected with one One set of circulation pumps forms a group of series loops, which is characterized in that: a waste liquid collection and treatment device is added below the water level where the four circulation pumps are located, and the waste liquid is collected centrally through the waste liquid collection and treatment device, and the organic phase and the water phase Separate and recover separately. The invention adopts a sealed waste liquid collection tank and an alkali-containing waste water storage tank for waste liquid recovery and treatment, completely eliminates the source of peculiar smell on site, avoids the pollution of the peculiar smell to the environment, separates and recycles different components, and recycles the produced The octenal of octanol increases the economic benefit and makes the sewage reach the qualified index for outward delivery.

Description

technical field [0001] The invention discloses a recovery treatment device and a treatment process for butanol condensation maintenance waste liquid, belonging to the field of octanol production equipment. Background technique [0002] For the octanol production unit, the pump outlet and inlet valves need to be isolated before each pump is replaced and repaired. Because the isolated materials contain aldehydes and alkalis and have a high temperature, if they are directly discharged into the grease trap containing aldehydes, there will be Condensation reaction occurs, accompanied by a large amount of heat release, which is prone to danger. In addition, when the condensation system is shut down for maintenance, the current treatment method for these waste liquids is to directly discharge them into the sewage collection tank of the butanol device through the discharge line of the pump body. However, due to the alkali content and high temperature of this part of the isolated ma...

AI Technical Summary

Problems solved by technology

However, due to the alkali content and high temperature of this part of the isolated material, the high COD and high pH of the waste liquid cannot be directly sent to the sewage treatment plant for treatment. It can only be diluted with fresh water in the sewage collection tank and then slowly sent to the sewage treatment plant. To the sewage treatment plant to avoid flooding the sewage system

[0003] This treatment method has great disadvantages: because the sewage collection tank is in a semi-closed state, the on-site odor is serious and the environment is seriously polluted; it needs to be diluted with fresh water in the sewage collection tank, wasting a lot of fresh water; due to high COD and high PH It has an impact on sewage treatment, so it can only be sent out slowly, which increases the time of sewage treatment; octenal in waste liquid is wasted with sewage treatment, and the cost of sewage treatment is high

Therefore, this processing method in the prior art is not only time-consuming and labor-intensive, causes serious pollution, but also consumes a large amount of processing costs.

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