Complete Process Technology for Soda Ash Production (Ammonia-Soda Process / Combined Soda Process / Natural Soda Process)

26-04-16 08:54
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This team has been deeply engaged in the soda ash industry for over 60 years (since 1957), ranking first in China for design capability in this field. The technical system comprehensively covers three major process routes: ammonia-soda process, combined alkali process, and natural soda process. Independently developed core technologies include: salt-alkali-calcium joint production process—injecting soda manufacturing waste liquid and residue into underground salt caverns for salt dissolution, desulfurization, and solid filling, which is a world first; horizontal belt vacuum filtration and energy-saving technology for soda ash—recognized by authoritative evaluation as reaching international advanced level and included in the National Key Energy-Saving and Low-Carbon Technology Promotion Catalog; as well as key technologies such as shift gas soda making, pressurized carbonation, solid-phase hydration重型碱, fluidized bed drying, self-returning alkali steam calciner, secondary jet ammonia absorption, and whole-system mother liquor balance interlock control. The team has obtained 7 invention patents and utility model patents, along with 9 industry-recognized proprietary technologies. Past performance encompasses 60 large-scale soda ash projects (based on complete project list statistics), with capacities ranging from 80,000 tons/year to 1,200,000 tons/year, including 3 overseas projects in Iran (20,000 tons/year, 20,000 tons/year, and 80,000 tons/year renovation respectively). Engineering design achievements have repeatedly won national and provincial-level Outstanding Engineering Design Awards (with total awards exceeding 40).

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本团队深耕纯碱行业逾六十年，系国内该领域设计能力排名第一的专业机构。技术体系完整覆盖氨碱法、联碱法和天然碱法三大工艺路线。自主研发的核心技术包括：盐碱钙联产工艺--通过将制碱废液废渣注入地下盐穴实现溶盐、脱硝与固体充填，为全球首创的井下资源循环利用技术；水平带式真空滤碱节能技术--经权威机构鉴定达到国际先进水平，已被列入《国家重点节能低碳技术推广目录》；此外还掌握变换气制碱、加压碳化、固相水合重灰、流化床干燥、自身返碱蒸汽煅烧炉、二次喷射吸氨、全系统母液平衡连锁控制等多项关键技术。已取得发明专利及实用新型专利6项、行业认定专有技术9项。过往业绩涵盖60余个大型纯碱工程，规模从8万吨/年到120万吨/年不等，其中包含3个海外项目（伊朗地区），以及国内多个百万吨级碱厂的设计与改造工程。可提供从工艺包、初步设计到施工图的全流程技术服务，服务周期视项目规模约4-12个月。

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