Are there any other denitration processes used aside from cryogenic denitration?
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As the title suggests, the barium-based denitration method has been largely phased out; currently, the mainstream approaches are membrane technology combined with cryogenic denitration. Even sodium sulfate decahydrate is not wanted at no cost – are there any other denitration processes being used? 1. If MVR thermal nitrate extraction is used, calcium nitrate has a market; is it economically viable? 2. Is it economically viable to remove nitrogen using the calcium method, with calcium chloride for nitrogen removal and calcium sulfate as gypsum powder? Experienced forum members are welcome to leave comments and discuss!
The MVR cost is slightly higher, but it is the lowest among evaporation processes
If 1,000 tons of sodium sulfate are produced annually, what would the equipment investment and operating costs be approximately? Are your company and Leke Company the same?
It’s not one. I need more information to prepare a budget; feel free to add me on WeChat at 15862619940
Sodium sulfate decahydrate obtained through membrane-based denitration combined with freezing, and then converted into Glauber’s salt using MVR, still has a market. Currently, Glauber’s salt with a brightness of over 82% is quite popular in the market. The advantage of reducing costs lies in increasing the production volume of Glauber’s salt. Additionally, for the membranes used in membrane-based denitration, the saltwater concentration cannot be too high; it is generally around 270–280 g/l, and saltwater concentration equipment is required as well. This one consumes a lot of steam. This needs to be considered comprehensively. Taking into account the company’s situation.
Calcium sulfate hemihydrate is evaporated and crystallized at high temperatures, while sodium chloride is evaporated and crystallized at low temperatures; the mother liquors are recycled to each other, MVR can be used, but the salt-nitrate ratio should not vary significantly
1,000 tons per year? There’s no scale to it; our company produces 2 million tons per year, and that’s not economical at all. 1000 tons for you?