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Special evaporator device for waste acid

An evaporator and waste acid technology, applied in the direction of heating water/sewage treatment, etc., can solve the problems of environmental damage, inability to directly reuse, increase the cost of waste water treatment, etc., and achieve the characteristics of not easy to coke, good energy saving and environmental protection, and compact structure Effect

Pending Publication Date: 2018-03-09
GUANGDONG YEANOVO ENVIRONMENTAL PROTECTION CO LTD
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Problems solved by technology

At present, the pretreated acid wastewater discharged from the workshops of industrial enterprises contains a large amount of usable acid, but because it contains pollutant impurities and the concentration is lower than the requirements of the workshop's usable concentration, it cannot be directly reused. Must continue to neutralize the discharge after reaching the standard
This not only increases the cost of wastewater treatment for enterprises, but also causes damage to the environment

Method used

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  • Special evaporator device for waste acid
  • Special evaporator device for waste acid
  • Special evaporator device for waste acid

Examples

Experimental program
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Effect test

Embodiment

[0032] Taking sulfuric acid wastewater from a certain enterprise as an example, its sulfuric acid content is 14%, and the specific gravity of wastewater is about 1.09g / ml. The special evaporator device for waste acid is made of nickel-based corrosion-resistant alloy. Nickel-based alloy refers to a type of alloy with comprehensive properties such as high strength and certain oxidation and corrosion resistance at a high temperature of 650-1000 °C. The main alloying elements are copper, chromium and molybdenum, which have good comprehensive properties and can resist various acid corrosion and stress corrosion. The sulfuric acid wastewater in this enterprise enters the special evaporator device for waste acid after preliminary pretreatment. The material input and output of the new waste acid special evaporator are shown in Table 1:

[0033]

[0034]

[0035] Table 1

[0036] The material enters the special evaporator device for waste acid after passing through the pre-heat ...

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Abstract

The invention provides a special evaporator device for waste acid. The special evaporator device comprises a liquid material box (1), a heat exchanger (2), a condensate water storage tank (3), an evaporator (4), an air compressor (5) and a separator (6), wherein the liquid material box (1) is connected with a feed pump (11); the feed pump (11) is connected with a feed regulation valve (13) througha feed valve (12); the feed regulation valve (13) is communicated with the heat exchanger (2); the heat exchanger (2) is connected with a feed port (44) in the evaporator (4); a thick material discharge port (47) in the evaporator (4) is connected with the separator (6). According to the device, high-temperature distilled water can be recycled as a heat source of a pre-heat exchanger, thus discharge of waste heat steam is avoided, and the device has perfect characteristics of energy conservation and environmental protection, and has the advantages of no need of condenser, quite simple structure and flow, full-automatic operation, continuous operation, safety and reliability, easiness in operation, high automation degree, full-automatic management, compact structure of the whole device andsmall floor area.

Description

technical field [0001] The invention relates to the field of evaporation and concentration treatment of acid waste water in the chemical industry, in particular to a special evaporator device for waste acid. Background technique [0002] As the national environmental protection department continues to strengthen the supervision and management of environmental protection, various industrial enterprises have become more and more concerned about their wastewater treatment. On the one hand, with the continuous improvement of sewage discharge standards, the cost of sewage treatment continues to rise. On the other hand, enterprises The amount of water used in production has remained high, which does not conform to the principle of increasing revenue and reducing expenditure in the development of enterprises and hinders the development of enterprises. At present, the pretreated acid wastewater discharged from the workshops of industrial enterprises contains a large amount of usable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04
CPCC02F1/04
Inventor 韩全
Owner GUANGDONG YEANOVO ENVIRONMENTAL PROTECTION CO LTD
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