Reclaim of Nitrous Gas Produced in the Production of Adipate

Abstract:

Reclaim of large amounts of nitrogen oxides wasstudied which was produced in the production process of adipate in ChongqingChemical Industry Co. Ltd. The waste gas first was cooled, then into theabsorption tower through the compressor, most of the nitrous gas was absorbedout in the form of nitric acid after treated by three absorption towers. Weresearched gas composition at the gateway of recycling equipment by gaschromatograph, and which showed that all NO, NO₂and nitric acid gas werealmost absorbed out, while N₂O without being absorbed was eventuallyemissions into the atmosphere at the allowed concentration range. The research resultsshowed that could recycle 33,000 tons of nitric acid and saved 60 million yuan RMBfor the company every year after treating by the recycling equipment, whichfully embodied the economic value and environmental significance, and put out anew target of treating nitrous oxide gas.

• Periodical: Advanced Materials Research (Volumes 1079-1080)
• Pages: 79-82
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1079-1080.79
• Online since: December 2014
• Authors: Li Jun Xiang*, Shuang Kou Chen
• Keywords: Adipate, Clean Production, Nitrous Gas, Reclaim

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