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Method for extracting n-butyl alcohol from hydrochloric acid-containing wastewater

A technology for n-butanol and wastewater, which is applied in chemical instruments and methods, natural water treatment, adsorbed water/sewage treatment, etc. It can solve the problems of long wastewater treatment cycle, limitation of large-scale production of silicone resin, and small wastewater treatment volume. , to improve the efficiency of wastewater treatment, shorten the cycle of wastewater treatment, and increase the amount of wastewater treatment.

Inactive Publication Date: 2020-09-29
PAMICA TECH CORP
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Problems solved by technology

[0002] In the process of producing silicone resin with chlorosilane, a large amount of hydrochloric acid wastewater will be produced. In addition to hydrochloric acid, there is also some n-butanol in the wastewater, resulting in a high COD value of the wastewater. The conventional treatment methods are neutralization, aeration, anaerobic aerobic , precipitation and other processes, the process cost is high, the waste water treatment cycle is long, the high chlorine content can easily lead to the death of biological colony poisoning, and the small amount of waste water treatment greatly limits the large-scale production of silicone resin

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  • Method for extracting n-butyl alcohol from hydrochloric acid-containing wastewater

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than in...

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Abstract

The invention belongs to the technical field of wastewater treatment, and particularly relates to a method for extracting n-butyl alcohol from hydrochloric acid-containing wastewater. The method comprises the following steps: sending hydrochloric acid-containing wastewater generated by preparing organic silicon resin from chlorosilane into a pretreatment unit, and sequentially neutralizing and filtering; sending the wastewater treated by the pretreatment unit into a resin treatment unit, carrying out adsorption treatment on n-butyl alcohol in the wastewater, and discharging the treated wastewater into a wastewater pool; after a period of time, introducing steam into the resin treatment unit, and desorbing the adsorbed n-butyl alcohol; and the desorbed steam enters an n-butyl alcohol recovery unit for n-butyl alcohol recovery. The method not only can effectively reduce the COD value in the wastewater generated by preparing the organic silicon resin by adopting chlorosilane, shorten thewastewater treatment period and increase the wastewater treatment capacity, but also can extract n-butyl alcohol from the wastewater for recycling so that the aims of effectively saving energy, reducing consumption and realizing clean production are achieved.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a method for extracting n-butanol from hydrochloric acid-containing wastewater. Background technique [0002] In the process of producing silicone resin with chlorosilane, a large amount of hydrochloric acid wastewater will be produced. In addition to hydrochloric acid, there is also some n-butanol in the wastewater, resulting in a high COD value of the wastewater. The conventional treatment methods are neutralization, aeration, anaerobic aerobic , precipitation and other processes, this process has high treatment costs, long waste water treatment cycle, high chlorine content can easily lead to poisoning and death of biological colonies, and the small amount of waste water treatment greatly limits the large-scale production of silicone resin. Contents of the invention [0003] In order to overcome the deficiencies in the above-mentioned prior art, the o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C07C29/74C07C31/12C02F103/36
CPCC02F1/001C02F1/28C02F1/66C02F9/00C02F2103/36C02F2303/16C07C29/74C07C31/12
Inventor 李俊李新辉杨磊李书武
Owner PAMICA TECH CORP
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