Can the decomposition of ammonium bisulfite using steam and air ensure complete breakdown of the sulfite?
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The solution obtained after ammonia-based desulfurization consists mainly of ammonium bisulfite; whereas decomposition using sulfuric acid requires the use of sulfuric acid, and an excess of about 30% of sulfuric acid results in significant production of ammonium sulfate as a by-product. If decomposition is carried out using steam and air, approximately 10% of the product is gasous sulfur dioxide. I would appreciate advice on whether decomposition using steam and air can ensure complete breakdown of the sulfite compounds Is it technically mature? Is it economically viable?
No, there will be a very small amount of ammonia present, but it’s practically negligible. I conducted experiments earlier; I’ll find the data and show it to you – it’s roughly 3 G/l. The technology is quite mature, but the amino acid method doesn’t yield profits due to the high costs involved; it’s too complicated, resulting in losses of over 1 million per year. Our factory faces restrictions regarding the source of ammonia, so we’re planning to switch to another production process. But if there is a source of ammonia, such as waste ammonia, it’s still feasible; it might even be profitable. Moreover, this substance is unstable and prone to decomposition. In particular, the metallurgical industry generates large amounts of dust, which acts as a catalyst for the subsalts produced by the amino acid method, accelerating their decomposition and oxidation – so be careful. At the same time, it’s also necessary to see if there is a market for sulfuric acid produced there, as this product is not easy to sell. Add me to chat; I’m the one who produces this stuff