Removal of sulfate radicals in the production of Glauber's Salt
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This post was last edited by sunjl1981 on 2013-1-6 23:34. The company is currently working on the second phase of the project. It is said that the barium method is no longer used to remove sulfate radicals, but the Glauber's salt production process is used. Does anyone have any analysis information in this regard? # , , &
Which company do you work for? You can ask me some not-so-deep questions. The process for producing Glauber's Salt should be to use membranes to remove sulfate radicals in brine.
Three units, Kaimiao Company, Shandong Binhua, and Tianjin Weidetek, have membrane denitrification technology. Each unit has performance. The total denitrification scale has reached nearly 10,000kg/h (calculated as sodium sulfate), which is equivalent to about 5 million tons of caustic soda. Kaifilm Company has reached a cooperation intention with Canadian CHEMTICS Company. The Chinese market will be promoted by Kaifilm Company, and the foreign market will be developed by CHEMTICS Company. Each other will use their respective processes and technologies, and Kaifilm Company will pay a symbolic royalty fee. Shandong Binhua established a holding company - Bryan Chemical Technology Co., Ltd., developed the MRO membrane denitrification technology, and carried out industrial applications in four companies including Shandong Binhua. The technology used by Tianjin Weidetek is basically the same as the SRS process of CHEMTICS, and is equipped with frozen nitrate extraction. It has been applied in Xinjiang Tianye and Yantai Wanhua chlor-alkali plants.
The ability to handle sodium sulfate must first be calculated before a detailed design can be made.
Glauber's salt is also produced, and there are Glauber's salt mines all over the country.
Membrane method for denitrification is to use membranes to intercept sulfate radicals in fresh brine water and increase its concentration to a certain extent greater than 80 grams per liter. Then it enters post-processing, or is discharged or recycled. Recycling generally uses the freezing method, using the solubility of Glauber's salt at different temperatures to crystallize it. If the sulfate content is low, the membrane method for nitrate removal is not cost-effective, and the membrane method for nitrate removal requires a large investment. Our company uses membrane method to remove nitrate, but does not recycle Glauber's salt. * * There are no regulations on the discharge of Glauber's salt. To recycle Glauber's salt, firstly, the price of Glauber's salt is cheap, and secondly, the equipment investment is large, which is not cost-effective.
Who is wangshaoquan? So understanding of the current situation of membrane denitration, this post was last edited by daocao999 on 2008-2-29 10:27 ]