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Novel process of acetylene purification and waste acid regeneration

An acetylene cleaning and new process technology, applied in sulfur trioxide/sulfuric acid, inorganic chemistry, non-metallic elements, etc., to achieve the effect of reducing investment costs and operating costs, and reducing equipment use requirements

Active Publication Date: 2016-09-07
HANGZHOU ZHONGHAO TECH
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  • Novel process of acetylene purification and waste acid regeneration
  • Novel process of acetylene purification and waste acid regeneration
  • Novel process of acetylene purification and waste acid regeneration

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0036] refer to figure 1 , figure 2 , a new process for regeneration of acetylene cleaning waste acid, comprising a low-temperature oxidation section and a vacuum concentration section, the low-temperature oxidation section includes the following steps:

[0037] (1) Add acetylene-clean waste acid (black, COD is 400,000 ppm) into reactor 1, open the steam valve, and heat up to 80°C;

[0038] (2) Add a non-metallic oxide carbon-based catalyst in the reactor 1, the amount of which is 0.2% of the total mass, and stir at 80° C. for 1.5 hours;

[0039] (3) Add a certain amount of hydrogen peroxide in the hydrogen peroxide metering tank 2, open the connecting valve of the metering tank and the reactor and drip hydrogen peroxide, the hydrogen peroxide dripping amount is 0.7...

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Abstract

The invention relates to a novel process of acetylene purification and waste acid regeneration. The novel process of acetylene purification and waste acid regeneration comprises a low-temperature oxidation working section and a vacuum concentration working section. Catalyzing is conducted through a catalyst; oxidization is conducted through hydrogen peroxide; organic matter in waste acid can be effectively and completely oxidized; oxidized waste acid is subjected to vacuum concentration, and after being concentrated, the oxidized waste acid can be directly used for the acetylene purification process; the catalyst added in the oxidization process can be regenerated and recycled; no hazardous wastes are generated in the whole process; the oxidation products are carbon dioxide and water; no other impurities are taken in. According to the novel process of acetylene purification and waste acid regeneration, the waste acid recycling regeneration process can be engineering-oriented and can be directly reused for vitriol used in the acetylene purification procedure, and the problem of tri-waste discharge is solved.

Description

technical field [0001] The invention relates to a process for treating waste acid, in particular to a new process for regeneration of acetylene cleaning waste acid. Background technique [0002] Acetylene is an important basic organic raw material, which is often used in the production of vinyl chloride and chemical fibers. In industry, calcium carbide is generally used as raw material to produce acetylene now, and natural gas and petroleum will tend to be used to produce acetylene in the future. Pure acetylene is a colorless and odorless gas, and the acetylene produced by calcium carbide is often mixed with pH 3 、H 2 S and other impurities have a special unpleasant odor. In industrial applications, it is necessary to purify the crude acetylene gas to obtain pure acetylene gas for industrial production. [0003] In recent years, a new process of cleaning acetylene gas with concentrated sulfuric acid has been developed in China, which solves the shortcomings of using a lar...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/90C01B17/88
CPCC01B17/88C01B17/90
Inventor 邱树锋童新洋刘刚马伟
Owner HANGZHOU ZHONGHAO TECH
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