湿法稀磷酸浓缩工艺日产和斯温森工艺的比较  

Comparison of Nissan and Swenson Craft in the Dihydration Concentration Technology to Produce Moist Phosphoric Acid

作　　者：杨桂玲[1] 徐宏[2] 

机构地区：[1]江苏电大化工分校,江苏南京210048 [2]南京化工职业技术学院化工系,江苏南京210048

出　　处：《山东化工》2006年第5期46-48,51,共4页Shandong Chemical Industry

摘　　要：二水法工艺是湿法磷酸生产的主要工艺，但其生产的产品浓度仅在26％～32％P205之间。而生产高浓度肥料P2O5的浓度要求为40％～50％，因此与之配套的酸浓缩装置和工艺成为二水法生产磷酸的重要部分。本文就目前比较理想，并在生产上大规模应用的日产浓缩工艺和斯温森浓缩工艺的工艺流程、操作指标、设备及设备布置、原料及公用工程消耗等方面进行了分析。结果表明，两种工艺在流程的复杂程度、适应性、可操作性、公用工程消耗、投资、水污染等方面各有特点。The dihydration is the primary technology to produce moist phosphoric acid whose product consistency is between 26% and 32% （PaO5）, but when to make high consistency fertilizer, the consistency of P2O5 is between 40 % and 50%. Acid concentration installation and its craft mainly constitute dihydration applied to produce phosphoric acid. The paper carries out analyses of technology, operation index ,installation and its arrangement, material and public project consumption of NISSAN concentration craft and Swenson concentration technology. The result indicates that there are different characteristics in complexity, adaptability, operation, public project consumption, investment and pollution etc.

关 键 词：磷酸 真空浓缩 工艺流程 操作指标 设备 原料 公用工程 消耗定额 

分 类 号：TQ126.35[化学工程—无机化工]