液态生物制品低温浓缩工艺综合节能降耗分析

Analysis on energy consumed of low temperature concentration process

把冷冻浓缩、膜分离浓缩与车间空调相结合,形成一种节能低温浓缩工艺,并对该工艺进行了理论分析。通过比较在120 m2GMP车间内,每小时将500 kg茶叶水提取液从初始质量浓度5 g/L浓缩到75 g/L各种浓缩工艺的能耗,结果表明:在中国广州地区,新低温浓缩工艺的能耗比真空蒸发浓缩节能56.7%,比膜分离浓缩节能16.6%,设备寿命期内可减少CO2排放量53.5 t;在中国上海地区,新低温浓缩工艺能耗比真空蒸发浓缩节能51%,比膜分离浓缩节能9.1%。

A new low temperature concentration process consist of freeze concentration and membrane separation was proposed and its energy consumed was analyzed theoretically. It was assumed that 500 kg/h fresh tea juice was concentrated from 5 g/L to 75 g/L in a workshop of 120 m^2 by the new concentration process and by traditional concentration processes respectively. The result show that energy consumed of new process is 56.7% less than that of evaporation concentration and 16.6% less than that of membrane separation in Guangzhou China, the COa emissions reduced 53.5 t. It is also found that energy consumed of the new process is 51% less than that of evaporation concentration and 9.1% less than that of membrane separation in Shanghai China.