1, the ammonium sulfate in coking plant contains a large number of hydrogen ions, showing strong acidity.
2. The ammonium sulfate in the chemical plant does not contain a lot of hydrogen ions, because the first thing generated in the coking plant is the reaction between the coking ammonium sulfate and water to generate ammonium sulfate and sulfuric acid, which cannot be removed when mixed with the ammonium sulfate solution.
Second, the price is different:
1. The ammonium sulfate in coking plant has more impurities, darker color and lower price.
2. The purity of ammonium sulfate in chemical plants is high, which is more expensive than that in coking plants.
Extended data:
1. Preparation of ammonium sulfate;
1. By-products or waste gas discharged in industrial production are absorbed by sulfuric acid or ammonia water (for example, sulfuric acid absorbs ammonia in coke oven gas, ammonia water absorbs sulfur dioxide in smelting flue gas, ammonia in Kaplan production or sulfuric acid waste liquid in titanium sulfate production).
2. Using gypsum (natural gypsum or phosphogypsum, ammonia and carbon dioxide as raw materials) to prepare ammonium sulfate.
Second, the generation method of ammonium sulfate:
Neutralization, crystallization, centrifugal separation and drying of ammonium hydroxide and sulfuric acid. Ammonia water and sulfuric acid are neutralized at about 100℃, and ammonium sulfate crystal slurry is centrifugally separated and dried to prepare finished ammonium sulfate.
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