问题:为什么吸附塔在充填工艺物料之前要进行真空泄漏,而不进行压力试验?真空如何得到?...
Wednesday, December 20, 2023
Sunday, September 11, 2022
问题:什么是阀门的公称通经、公称压力、最大工作压力和试验压力?...
Sunday, September 11, 2022
问题:歧化反应系统的压力是如何控制的?其数值范围是多少?...
Wednesday, March 6, 2024
Sunday, September 11, 2022
Wednesday, March 6, 2024
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:电动机使用工频电源驱动时,电压下降则电流增加;对于变频器驱动,如果频率下降时电压也下降,那么电流是否增加?...
Friday, October 20, 2023
问题:为何吸附工段一方面从D608、D605脱水,一方面又要从P609后注水?...
Tuesday, April 16, 2024
Sunday, May 21, 2023
问题:精馏塔的回流分哪两部分回流?增大精馏塔回流比的措施有那些?...
Sunday, December 18, 2022
Sunday, September 11, 2022
Friday, September 8, 2023
Sunday, September 11, 2022
Tuesday, September 13, 2022
Monday, January 22, 2024
Sunday, May 21, 2023
Sunday, September 11, 2022
Sunday, September 11, 2022