对双加压法稀硝酸尾气吸收处理工艺技术优化的研究

打开文本图片集

中图分类号：TQ111.29 文献标识码：A 文章编号：1004-8901（2025）05-0027-03

Research on Technical Optimization of Tail Gas Absorption& Treatment Process for the Double-Pressure-Method-ProducedDilutedNitricAcid

LIDa-jun （ChongqingHuayu New Materials Technology Co.，Ltd.，Chongqing 401221，China）

AbstractInrespostteproblefwtailgastreamntficyindluteditriccidprductiviatdublereuemeod temoptimizationschemewasproposed.Theinteraltructureoftheabsorberwasimprovedbyusingceramicectangularsadleringpacking， andthekeyprocssparameterssuchstemperaturepresureandbsorptionliquidforulawereoptiied.Awastewateeusetecology based on “bio-treatment + membrane separation”was developed. Industrial tests on a 100，000t/a unit showed thatthe optimized process significantly improved the NOx removal efficiency from 79.6% to 91.9% ，reduced the operating cost by 16.1% ，and reached annual cost savings of5.8millonyanithrowastewaterdischargeTissheeprovidenewimprovementconceptfortreatingdilutediricacidtailgas. Keywords：double-pressure method;diluted nitric acid;tail gas treatment；process optimization

doi：10.3969/j.issn.1004-8901.2025.05.008

双加压法是当前稀硝酸生产的主流工艺，具有能耗低、效率高的优势。（剩余3759字）