I would like to ask about the investment cost of chlorine post-treatment processes
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This post was last edited by cicibella on 2016-7-29 at 17:52. The chlorine produced by the electrolysis process now needs to be sent to the next processing stage for further reactions; however, it must undergo post-treatment due to the presence of water vapor and various gas impurities. If the standard methods used in the chlor-alkali industry are followed, namely drying and compressing the chlorine into a liquid state before using it again as a gas, by how much would the cost per ton of chlorine increase? It doesn’t need to be very precise; a rough range is sufficient. Also, are there any materials available on the purification processes for gaseous chlorine?
{:3_65:} No experts here to reply? . .
It mainly involves many utility systems, such as circulating water, chilled water, and brine for cooling; it’s difficult to distinguish between these. The other main factors are power consumption, as well as the transportation and compression of chlorine; it takes 50 kWh per ton of chlorine. For the liquefaction of chlorine, the amount of cooling required varies depending on the chlorine pressure. Steam is used for the vaporization of chlorine, with a consumption of 0.1 tons of steam per ton of chlorine.
Thank you for your reply~ I’d like to ask again: is there an approximate figure for the equipment investment cost? PS: I’m a beginner; there’s a lot I don’t know about this industry. . I just realized that chlorine needs to be in vapor form in order to vaporize. . Wouldn’t it vaporize just by releasing pressure? {:3_66:}
When investing, capacity is what matters; equipment for utility systems such as circulating water, chilled water, and brine is not considered. The most crucial and expensive component is the turbine. For capacities of less than 100,000 tons, domestic turbines can be used, while for capacities over 100,000 tons, Siemens turbines from Germany are required. The turbines used by our company have a capacity of 200,000 tons, and their cost was over 8 million euros (at prices from 13 years ago).
The production capacity isn’t that high. . . {:3_59:} The maximum amount is 20,000 tons; the product is ammonium hydroxide, but the electrolysis process involves hydrogen and chlorine gas treatment, and it’s pretty much similar to the chlor-alkali process. . The chlorine gas produced by electrolysis has such a high moisture content that it presents significant difficulties when sent to the next processing stage for reaction; therefore, efforts have been ongoing to find ways to minimize costs associated with handling this chlorine gas