In a catalytic cracking coaxial two-reactor system, if the feedstock riser breaks,
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What are the key points for assessing and handling an accident? Please, kind master, give me some advice! Thanks first!
Reply to 1# huananhu110: This issue has occurred in many places, and there are relevant posts available; you can search for them. In simple terms, if the inventory in the stripping section cannot be maintained, there is a risk of pressure loss in the two vessels; in such cases, it is necessary to promptly increase the amount of steam used for stripping, activate all safety mechanisms including those based on main air supply, introduce emergency steam to various systems, and adjust the differential pressure between the two vessels. Further actions are then taken, and usually by this point the plant has already been shut down.
It seems someone has asked this question before, but no such incident has occurred with any device. Generally speaking, the standpipe might not have been properly lined, leading to perforations or problems with the valves not sealing properly. If it suddenly breaks, it’s extremely dangerous – high-temperature smoke and air can enter the settler and mix with oil and gas, making an explosion inevitable.
Agree with the opinion on the first floor! Based on the reserves in the settler and stripping section, emergency measures should be taken and operations halted for maintenance!
Enable main air self-protection to quickly reverse the pressure difference and maintain positive pressure in the settler
Have any fractures occurred in some areas? What are the specific handling principles?