Waste alcohol recovery system

The system, which combines a desulfurization reactor and a distillation tower with an alkali supply device, solves the problem of separating soluble impurities from sulfur-containing waste alcohol, achieving efficient ethanol recovery and quality improvement, and is suitable for the food and medical industries.

CN224142200UActive Publication Date: 2026-04-21BEIJING SHOUGANG LANZATECH TECH CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING SHOUGANG LANZATECH TECH CO LTD
Filing Date
2025-04-02
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

Existing technologies are insufficient to effectively separate and recover sulfur-containing waste alcohols containing soluble impurities such as low-boiling-point volatile acids, hydrogen sulfide, and thiols, resulting in substandard quality of purified ethanol that is difficult to recycle.

Method used

The system employs a desulfurization reaction tank and a distillation tower combined with an alkali supply device. By reacting with alkali in the desulfurization reaction tank, most of the acidic and sulfur-containing substances are removed. Subsequently, ethanol and impurities are further separated in the distillation tower under high temperature conditions, thereby achieving a significant reduction in sulfur content.

Benefits of technology

This technology enables efficient ethanol recovery, ensuring that the product's color, acidity, pH, and sulfur content meet the required standards, thereby improving ethanol recovery capacity and economic benefits.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of waste alcohol recovery, and particularly relates to a waste alcohol recovery system. The system comprises: a desulfurization reaction tank, the desulfurization reaction tank is provided with a waste alcohol inlet, a water inlet, a first alkali liquor inlet and a feed liquid outlet, and the desulfurization reaction tank is provided with a first pH meter; the distillation tower is provided with a feed liquid inlet, a second alkali liquor inlet and an ethanol steam outlet, a second pH meter is arranged on the distillation tower, and the feed liquid outlet of the desulfurization reaction tank is connected with the feed liquid inlet of the distillation tower; the ethanol storage tank is provided with an ethanol inlet and an ethanol outlet, and the ethanol inlet of the ethanol storage tank is connected with the ethanol steam outlet of the distillation tower; the alkali liquor supply device is provided with an alkali liquor outlet, and the alkali liquor outlet of the alkali liquor supply device is respectively connected with the first alkali liquor inlet of the desulfurization reaction tank and the second alkali liquor inlet of the distillation tower. The system is suitable for treating waste alcohol containing low-boiling-point volatile acid, hydrogen sulfide, mercaptan and other impurities.
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