Device and process for recovering butanol from low-concentration organic wastewater

An organic waste water, low-concentration technology, applied in the preparation of organic compounds, organic chemistry, separation/purification of hydroxyl compounds, etc., can solve the problems of complex process, many operating points, high energy consumption, and achieve simple process flow and recovery efficiency. High and low energy consumption

Inactive Publication Date: 2016-10-12
XINJIANG TIANYE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The advantage of said patent is that high-purity butanol can be recovered, but said patent also has defects. When said device and method are aimed at treating low-concentration butanol-containing wastewater, if the butanol is still enriched through the bottom of the tower Alcohol will have the defects of high energy consumption and high cost
[0009] By comparison, there are many devices and processes for recovering butanol in existing wastewater, but there are certain defects and deficiencies in the recovery of butanol from low-concentration organic wastewater.
On the whole, there are defects such as high cost, high energy consumption, complicated process, and many operating points. In order to overcome the shortcomings of the existing technology, it is necessary to invent a low-cost, low-energy consumption, high efficiency, and simple operation. equipment and process

Method used

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  • Device and process for recovering butanol from low-concentration organic wastewater

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Experimental program
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Effect test

Embodiment 1

[0037] Refer to attached figure 1 , a device for recovering butanol from low-concentration organic wastewater described in this embodiment includes a wastewater storage tank (1), a feed pump (2), a rectification tower (3), a cooling separator (4), a tower Top reflux pump (5), tower bottom pump (7), boiler (6); rectification column (3) includes tower top reflux section, packing section (8), liquid collection tank (9) and tower bottom liquid collection section ;

[0038] The wastewater storage tank (1) is connected to the inlet of the feed pump (2), and the outlet of the feed pump (2) is connected to the packing section (8) of the rectification tower (3), and the top of the rectification tower (3) The outlet is connected to the upper inlet of the cooling separator (4) through a pipeline, and the bottom of the cooling separator (4) is connected to the inlet of the top reflux pump (5) through a pipeline. to the upper part of the rectification tower (3), and the other road is con...

Embodiment 2

[0040] Refer to attached figure 1 , a kind of technology that reclaims butanol from low-concentration organic waste water described in the present embodiment, comprises the steps:

[0041] The organic waste water (a) with a butanol concentration of 0.1% from the production unit enters the waste water storage tank (1), and under the delivery of the feed pump (2), the waste water flows from the packing section (8) of the rectification tower (3) ) enters the rectifying tower (3); the gas phase rising in the rectifying tower (3) enters the cooling separator (4) from the top of the tower, forms a liquid phase in the cooling separator (4), and returns to the top of the tower (5) The liquid phase in the cooling separator (4) flows back into the rectification tower (3) from the upper part of the rectification tower (3) under the action of cooling; the reflux liquid phase and the organic waste water entering the rectification tower (3) move downward and concentrate in the The liquid c...

Embodiment 3

[0043] Refer to attached figure 1 , a kind of technology that reclaims butanol from low-concentration organic waste water described in the present embodiment, comprises the steps:

[0044] The organic waste water (a) containing 1% butanol from the production unit enters the waste water storage tank (1); under the delivery of the feed pump (2), the waste water flows from the packing section (8) of the rectification tower (3) ) into the rectifying tower (3); the gaseous phase rising in the rectifying tower (3) enters the cooling separator (4) from the top of the tower, forms a liquid phase in the cooling separator (4), and returns to the top reflux pump (5) The liquid phase in the cooling separator (4) flows back into the rectification tower (3) from the upper part of the rectification tower (3) under the effect of cooling; the reflux liquid phase and the organic waste water entering the rectification tower (3) move downward and concentrate The liquid collection tank (9), enter...

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Abstract

The invention discloses a device and process for recovering butanol from low-concentration organic wastewater. The device comprises a wastewater storage tank, a feed pump, a rectification tower, a cooling separator, a top reflux pump, a tower bottom pump, and a boiling device, wherein the rectification tower comprises a stuffing section and a sump. During the process of operation, the butanol is continuously enriched in the cooling separator at the top of the tower. When the concentration is qualified, a butanol product is sent out by the top reflux pump, the wastewater is continuously enriched to the lower part of the rectification tower and is used as wastewater to be discharged out of the tower bottom pump. The device and process provided by the invention have the advantages of simple process flow, low operating pressure, low energy consumption and high recovery efficiency, and are particularly suitable for the treatment of butanol-containing low-concentration organic wastewater, and simultaneously the high-concentration butanol product is recovered, accordingly, the pollution of the butanol-containing organic wastewater to the environment is avoided, and the recovered butanol product creates economic benefits.

Description

Technical field [0001] The invention is the field of organic wastewater treatment technology, which is specifically for the device and process of recycling butanol from low -concentration organic wastewater. Background technique [0002] Organic wastewater is a wastewater based on organic pollutants. Organic wastewater in organic wastewater is difficult to biodegradation, microorganisms are not strong, and the healthy development of the ecological environment of the region is relatively large. Organic wastewater often comes from industry.During the production process, such as the production process of 1,4 -butanol in industrial production, the organic wastewater produced by it contains organic matter such as butanol. During the treatment of organic wastewaterTiblitol volatilizes, the flavor of butanol at the scene is heavy, causing environmental pollution, and once a large amount of butanol is enriched, it may also form an explosive mixture with the air. When it comes to light fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/74C07C29/80C07C31/12
CPCC07C29/74C07C29/80C07C31/12
Inventor 关刚张永龙邓健康林涛海唐红建景超马永刚张红雷朱建强陆俊
Owner XINJIANG TIANYE GRP
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