Method for preparing zinc sulfide and coproducing sodium chloride from chemical fiber waste slag mud
A zinc sulfide and sodium chloride technology, which is applied in the direction of zinc sulfide and alkali metal chloride, can solve the problems of unfavorable environmental protection, waste of transportation costs, waste of waste residue and mud elements, etc., and achieve low cost, elimination of chemical pollution, and production process and its simple effect on equipment
Inactive Publication Date: 2012-01-11
DALIAN XINHENG ENVIRONMENTAL PROTECTION TECH
View PDF2 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] The traditional method of treating waste sludge is usually to filter it into a cake and transport it away for accumulation, which is not conducive to environmental protection and wastes transportation costs, especially the valuable material elements contained in the waste sludge; at present, there is no use of chemical fiber waste sludge to prepare vulcanization. Related reports on the method of co-producing sodium chloride with zinc
Method used
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
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] specific implementation
[0032] A method for preparing zinc sulfide and co-producing sodium chloride with chemical fiber waste sludge, comprising the following preparation steps:
[0033] Step A. Send 1000kg of chemical fiber waste sludge to the washing tank 1, first wash the chemical fiber waste sludge with clean water, adjust it into a thin emulsion of chemical fiber waste sludge with a solid content of 40%, and then send it to the first corrosion-resistant reactor 2 Among them, the chemical fiber waste sludge contains 384kg of zinc hydroxide and 36kg of sulfide;
[0034] Step B, drop into hydrochloric acid solution (volume percentage concentration is 26%) in the first anti-corrosion reactor 2 to react, the reaction generates the mixed solution I of zinc chloride and sulfuric acid, and carbon dioxide and hydrogen sulfide gas, the first anti-corrosion reactor The mass ratio of the chemical fiber waste sludge thin emulsion to the hydrochloric acid solution in the co...
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 PUM
Login to View More Abstract
The invention belongs to the technical field of chemical industry three-waste treatment and utilization, in particular to a method for preparing zinc sulfide and coproducing sodium chloride from chemical fiber waste slag mud. According to the technical scheme of the invention, the method comprises the following steps of: washing chemical fiber waste slag mud and preparing into dilute emulsion; reacting the dilute emulsion with hydrochloric acid; absorbing gas generated after reaction and then using the gas; adding a small quantity of calcium chloride and zinc hydroxide successively in a mixedliquid generated after reaction; reacting and then filtering; then, reacting the filtrate and sodium sulfide to produce a mixed solution of zinc hydroxide and sodium chloride; filtering; washing, drying and crushing a filter cake and checking weight and packaging to obtain a zinc hydroxide powder product; and distilling, cooling and crystallizing sodium chloride solution, and then smashing and packaging to obtain a sodium chloride crystal product. According to the method, waste mud produced in the chemical fiber production industry can be effectively treated, and chemical industry pollution is eliminated. In addition, the chemical fiber waste slag mud can be reformed into zinc sulfide and sodium chloride products with economic value, and the production technology and equipment are simple and production cost is low.
Description
technical field [0001] The invention belongs to the technical field of treatment and utilization of three chemical wastes, in particular to a method for preparing zinc sulfide and co-producing sodium chloride with chemical fiber waste sludge. technical background [0002] Fiber is a necessity for social production and life, and a basic material for the textile industry. The type and quantity of fibers and the quality are important symbols of a country's production, technology and living standards. In today's society, the types of fibers can be summarized into three categories: plant fiber, dynamic fiber and chemical fiber; chemical fiber is the product of the development of modern industry; chemical fiber is made of natural polymer compounds or artificially synthesized polymer compounds. Fibers with textile properties produced by silk stock solution, spinning and post-processing processes; in 1985, the world's chemical fiber output was more than 1 million tons, accounting f...
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 Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/08C01D3/04
Inventor 王嘉兴
Owner DALIAN XINHENG ENVIRONMENTAL PROTECTION TECH