Waste salt resourceful treatment system and application

A disposal system and recycling technology, applied in inorganic chemistry, alkali metal compounds, alkali metal carbonates, etc., can solve the problems of occupation, secondary pollution, large land, etc., and achieve stable use, easy operation, and simple equipment. Effect
CN110201975APending Publication Date: 2019-09-06北京航天环境工程有限公司
7 Cites 33 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
北京航天环境工程有限公司
Publication Date
2019-09-06

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a waste salt resourceful treatment system which comprises a waste salt carbonization and pyrolysis system, a carbon-containing salt slag dissolving and filtering system and anevaporating and salt separating system in sequential connection, wherein the waste salt carbonization and pyrolysis system can carry out carbonization and pyrolysis treatment on waste salt I composedof sodium chloride, and sodium sulfate monomer salt or mixed waste salt and also can treat tail gas; the carbon-containing salt slag dissolving and filtering system can dissolve and filter the carbon-containing salt slag treated by the waste salt carbonization and pyrolysis system; and the evaporating and salt separating system can carry out evaporation and concentration, fractional crystallization and drying treatment on the strong brine treated by the carbon-containing salt slag dissolving and filtering system to obtain product salt. The waste salt resourceful treatment system takes industrial waste salt as the raw material, removes organic pollutant from waste salt and separates mixed inorganic salt to finally obtain an industrial second-grade salt product, so that recycling of waste salt is realized, and the flue gas generated during the production process is discharged after reaching the standard.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of environmental protection, and relates to a waste salt resource treatment and disposal system and its application. Background technique

[0002] Industrial waste salt mainly comes from coal chemical industry, pesticide, chemical fertilizer, biochemical industry and other industries. These industrial waste salts often cannot be reused in industrial production because they contain a certain amount of organic matter. The relevant national legal documents also classify these waste salts as dangerous waste. Waste salt is often complex in composition and highly toxic and harmful, which is a difficult point in the treatment of hazardous waste industries, and the treatment cost is extremely high. The treatment cost per ton is more than 3,500 yuan, which often brings a great burden to enterprises and also causes waste of resources.

[0003] At present, domestic and foreign technologies for waste salt treatment are...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More