One Question per Day on Refining Knowledge (Technology) 110122
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We welcome everyone to actively participate in the learning and discussion of professional basic knowledge in the refining technology exchange area! In accordance with the forum’s unified requirements, the maximum score for this event is 5 Wealth points, and rating charm is prohibited. At the same time, friendship requests and repeated ratings are declined. Please be cautious when posting; edits will not be effective! Those who have different opinions on the provided answers can post discussions the next day, and those who provide solutions or their own opinions regarding the daily question will receive appropriate rewards! The focus is on participation, and there are prizes for participating! 1. When the unit starts up, electrodialysis should be connected to the circulation as early as possible, with the aim of ________. (1) Accelerate the dehydration process to restore normal operation of the equipment as soon as possible. (2) Reduce the time required to get the system up and running. (3) Prevent leaks in the heat exchangers caused by moisture. (4) Avoid fluctuations once normal pressure conditions are re-established. 2. Whenever purge steam passes through the gear oil gauge, it is necessary to ______. (1) Disassemble and then purge. (2) Install the gear. (3) Connect to the pipeline. (4) Use a shut-off valve to control a small amount of steam for purging. 3. For all pipelines related to the stripping tower, the _______ valve should be opened first to prevent pressure buildup in the stripping tower. (1) From the gas column to the main column; (2) From the main column to the stripping column; (3) Evacuating the stripping column; (4) Liquid-controlled feed line of the stripping column. 4. When using a purge pump, the end seal should be closed first before starting the gas purge, and the duration of the purge should not be too long. (1) Flushing oil (2) Cooling water (3) Sealing oil (4) Hot water 5. The sequence for opening the tower manhole after shutting down is _________ . (1) Open from top to bottom (2) Open from bottom to top (3) Open simultaneously from top and bottom (4) Open one from the top first, then from bottom to top. Reference answers: 1 3 1 2 1
Reply 1# chengkang 2 3 1 2 1
Reply 1# chengkang 13131
3. For all pipelines related to the purge and stripping towers, the _______ valve should be opened first to prevent pressure buildup in the stripping tower. (1) Vapor tower to main tower; (2) Main tower to stripper; (3) Stripper evacuation; (4) Liquid control bypass line 9 of the stripper. Generally, there are no valves between the vapor tower and the main tower; therefore, when performing purging, it’s necessary to open the valve connecting the main tower to the stripper. This question is not entirely accurate.
1. When the unit starts up, electrodialysis should be connected to the circulation as early as possible, with the aim of ________. (1) Accelerate the dehydration process to restore normal operation of the device as soon as possible. 2. Whenever purge steam passes through the gear oil gauge, it is necessary to ______. (3) Payment line 3. For all pipelines related to the purge and stripping towers, the _______ valve should be opened first to prevent pressure buildup in the stripping tower. (1) Gas tower back to main tower 4. When using the purge pump, the end seal should be raised to _______ before steam purging can be carried out, and the duration of purging should not be too long. (2) Cooling water 5. After shutting down, the sequence for opening the tower manhole is __________. (1) Open from top to bottom
Reply 1# chengkang 13121
1.3.1.2.1.................