化工生产中利用各组分在溶液中溶解度的差异,从而分离混合物的单元操作称为()。A、蒸馏B、萃取C、干燥...
Wednesday, September 13, 2023
斜孔塔盘的优点是()。A、操作稳定可靠固定管板式B、节能降耗明显C、操作弹性大D、可提高产量...
Saturday, October 14, 2023
Saturday, September 10, 2022
Saturday, September 10, 2022
Thursday, March 21, 2024
Saturday, September 10, 2022
Sunday, August 20, 2023
Monday, January 23, 2023
粗酚精馏通常采用()工艺。A、普通蒸馏B、萃取精馏C、减压蒸馏...
Monday, April 22, 2024
Saturday, October 21, 2023
Tuesday, March 14, 2023
精馏塔主要用途是经初馏、酸洗、吹苯后的()再精馏塔内进行蒸馏,提...
Saturday, September 10, 2022
Saturday, September 10, 2022
简单蒸馏适用于()液体蒸馏。A、沸点差较小B、沸点差较大C、无沸点差的...
Wednesday, April 26, 2023
Saturday, September 10, 2022
Saturday, September 10, 2022
Saturday, September 10, 2022
计算题:理论计算得知一精馏塔的理论塔板数为30层,塔板效率为60...
Saturday, September 17, 2022
分子中含有环结构的碳氢合物称为。按其结构不同分为()、()、()...
Saturday, September 10, 2022
一般地说,操作弹性最大的塔型是()。A、泡罩塔B、浮阀塔C、筛板塔D、填料塔...
Thursday, May 11, 2023