What to do after the liquid-phase safety valve activates
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This post was last edited by panjun1221 on 2022-10-29 at 18:07. I would like to ask the experts: in chemical engineering design, when the medium for safety valves is a liquid phase, specifically a flammable liquid. Should a collection tank be installed at the outlet of the safety valves? And should this collection tank be placed at the top or bottom of the building? Since there are 4 floors, each floor has safety valves.
This post was last edited by Shi Xiaodong on 2022-10-29 at 21:29. The fire protection design standards for petrochemical enterprises, GB50160-2008 (2018 edition), 5.5.4 stipulate that the outlets of safety valves on equipment handling flammable gases and flammable liquids must comply with the following requirements: 1. The discharge pipes connected to the safety valves of equipment handling flammable liquids should be connected to storage tanks or other containers; whereas the discharge pipes connected to the safety valves of pumps should preferably be connected to the pump’s inlet pipeline, towers, or other containers； 2. The discharge pipe at the outlet of the safety valve of combustible gas equipment shall be connected to a flare system or other safety discharge facilities ； 3. Combustible gases or liquids that may ignite immediately after release should be cooled before being connected to the venting facilities ； 4. Combustible gases that may contain liquid droplets should be passed through a liquid separation tank before being connected to the flare system. The collection tank is placed at a low point for safety, as placing it at a high point would cause flammable liquids to remain in the pipes, posing a safety risk.
It definitely cannot be discharged arbitrarily; combustible liquids present various levels of fire hazard. Furthermore, the condition of the material (temperature, pressure, composition, etc.) must also be taken into account, and a decision is made after considering all factors regarding the final destination.
Fire protection design standard for petrochemical enterprises GB50160-2008 6.3.13 The outlet pipe of the safety valve of liquefied hydrocarbon storage tanks shall be connected to the flare system. In cases of genuine difficulty, venting can be carried out on-site, but the exhaust outlet must be at least 3 meters above the tank roof platform within a radius of 8 meters.
Thanks for sharing, I’m learning!*learning!* ! !
Thanks for sharing, I’m learning!*learning!* ! !
The collection tank must be installed at a low point; if it is placed at a high point, the flammable liquid will remain in the pipes, which poses a safety risk!
According to the petrochemical fire protection codes, collection tanks must be installed; these tanks should be placed at a low point to prevent any liquid from remaining in the pipelines.
Fire protection design standard for petrochemical enterprises GB50160-2008 (2018 edition) 5.5.4 The connections at the outlets of safety valves on equipment handling flammable gases and flammable liquids shall comply with the following provisions: 1. The discharge pipes at the outlets of safety valves on equipment handling flammable liquids shall be connected to storage tanks or other containers; the discharge pipes at the outlets of safety valves on pumps should preferably be connected to the pump’s inlet pipeline, towers, or other containers； 2. The discharge pipe at the outlet of the safety valve of combustible gas equipment shall be connected to a flare system or other safety discharge facilities ； 3. Combustible gases or liquids that may ignite immediately after release should be cooled before being connected to the venting facilities ； 4. Combustible gases that may contain liquid droplets should be passed through a liquid separation tank before being connected to the flare system. The collection tank is placed at a low point for safety, as placing it at a high point would cause flammable liquids to remain in the pipes, posing a safety risk.
The collection tank must be installed at a low point; if it is placed at a high point, the flammable liquid will remain in the pipes, which poses a safety risk!