钛液机械闪蒸降温结晶技术夏季运行特性研究

doi:10.11962/1006-4990.2019-0339

Abstract

Abstract:

The traditional titanium solution cooling crystallization method with thermal compression has problems of high en-ergy consumption,low efficiency,large secondary sewage and difficult cooling in summer.A new mechanical flash cooling crystallization method was proposed,and the system performance under summer condition was performed.The results showed that compared with the traditional method,the new method under summer condition（cooling water temperature is 34 ℃） can shorten cooling time by 24.2%,reduce production cost by 67.6%,decrease standard coal consumption by 92.4% and reduce the secondary sewage 20 000 m ³/a.As a new energy-saving and environmental protection technology,the mechanical flash cooling crystallization technology has broad market application prospects in the field of inorganic salts.

Key words: titanium dioxide, ferrous sulfate, vacuum cooling, crystallization, energy saving

CLC Number:

TQ026.5

Yin Haijiao,Xia Junjun,Quan Xiaoyu,Peng Tao,Tang Hao. Study on operation characteristics of mechanical flash cooling crystallization technology for titanium solution in summer[J]. Inorganic Chemicals Industry, 2020, 52(4): 93-95.

蒸汽喷射降温结晶系统（改造前）		机械闪蒸降温结晶系统（改造后）		备注
设备名称	设备指标	设备名称	设备指标	备注
蒸汽喷射泵	两级式	压缩机	13万m³/h,250 kW	新增
结晶釜	56 m³	结晶釜	56 m³	利旧
冷凝器	大气冷凝器	冷凝器	板式冷凝器700 m²	新增
水环真空泵	1 200 m³/h,45 kW	水环真空泵	1 200 m³/h,45 kW	利旧
侧搅拌	5.5 kW	侧搅拌	5.5 kW	利旧
冷却塔泵	55 kW	冷却塔泵	55 kW	利旧
冷却塔风机	15 kW	冷却塔风机	15 kW	利旧
液封池回水泵	45 kW	气液分离器	折流板+丝网	新增

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National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Study on operation characteristics of mechanical flash cooling crystallization technology for titanium solution in summer

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