Seek purification and regeneration process for waste sulfuric acid

Of course, it’s to regenerate the waste acid into new acid

Oh, that’s exactly what I do. But this technique is covered by a patent, so you probably won’t be able to get it on forums~:loveliness:

Is the patent technology for sulfuric acid purification mature? Could you please provide a detailed explanation?

It is reported that Monsanto Company (formerly Monsanto) possesses such technology.

I think the original poster’s question is vague – what kind of waste acid, what are its components, and what is its concentration? None of those. Are there any sulfuric acid plants or heat supply sources in the vicinity? The question is too vague, which shows that there is no real purpose behind it and no sincerity at all!

Our company specializes in this area. The original poster can get in touch with me; my email address is fwjun@163.com. You can also visit our company’s website at www.c-wmm.com. We are a listed company, and our phone number is 029-88331536

:Lol, tell me the concentration of your sulfuric acid and the concentration you want to regenerate it to, and I’ll provide you with the process. wmmtlc@gmail.com

Your question is very good; the market for acid recycling will become booming in China in 5 years, but this technology is currently monopolized by foreign companies. I am familiar with DuPont’s patented alkylation technology (for the recycling of sulfuric acid), and it is currently in use in the Gulf of Mexico in the United States. Additionally, Mengshan also has similar technologies.

What I can tell you is that the technology we use is indeed a domestic patent… it’s a high-temperature cracking process for waste sulfuric acid, which allows us to purify waste sulfuric acid with a concentration of around 85% into acid with a concentration of 98%. The main difference between this method and the traditional method of producing acid from sulfur is the addition of a cracking stage; this is also a patented design by an engineering firm, and we paid eight million yuan to acquire it.:)

The best process is to crack the waste sulfuric acid; by cracking it into SO2 gas and then purifying, converting, and drying it, high-concentration finished acid can be obtained. The following methods can also be employed: 1. Concentration method: In this method, during the heating and concentration of waste dilute sulfuric acid, the organic substances contained within undergo reactions such as oxidation and polymerization, turning into dark-colored gelatinous substances or suspensions which are then filtered out. This approach achieves both the purpose of removing impurities and concentrating the dilute sulfuric acid. 1) High-temperature concentration method 2) Low-temperature concentration method 2. Oxidation method: Oxidizing agents are used under appropriate conditions to oxidize and decompose the organic impurities in waste sulfuric acid, converting them into carbon dioxide, water, nitrogen oxides, etc., which are then separated from the sulfuric acid, thereby purifying and recovering the waste sulfuric acid. 3. Extraction method: The extraction method involves bringing an organic solvent into full contact with waste sulfuric acid, so that the impurities in the waste acid are transferred into the solvent. 4. Crystallization method: When waste sulfuric acid contains large amounts of organic or inorganic impurities, the crystallization precipitation method can be considered, depending on the properties of these impurities, to remove them.

85% is a very high concentration; it must be quite troublesome to purify and recycle dilute sulfuric acid in current sulfate production processes

I am familiar with the process plan. But I don’t know if it’s the waste sulfuric acid from that type of product. Different ingredients, different manufacturing processes

High costs, high investment, high operating expenses; no other advantages