Why is a safety valve installed on the rich liquid side of the solvent plate exchanger?
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Why is a safety valve installed on the rich liquid side of the solvent plate exchanger?
It is surely to prevent overpressure in the system caused by the breakdown of meteorological substances
The rich liquid side is often the side that is heated. It’s rich liquid again, with a high concentration of volatile components. Heating can easily lead to vaporization and overpressure, causing safety accidents.
If what you say is true, and there are safety valves on both sides of the emergency water cooling heat exchanger, how can this be explained?
The specific process is unclear; it can only be guessed that it might involve rapid cooling in a water system, with a temperature change of possibly 4°C. Water is a special substance; above 4 degrees Celsius, it expands when heated and contracts when cooled, while below that temperature, it expands when cooled and contracts when heated. If the pipeline becomes blocked at this time, a safety valve is needed to release the expanded volume and protect the equipment.
Check the difference in design temperature and design pressure between the hot and cold fluids in the heat exchanger; there may also be concern that high-pressure fluid could enter the low-pressure side, and safety valves are available to release pressure promptly:D
This design is an outdated design. The design pressure should be increased ； Disable safety valve
Generally, the rich liquid side enters the regeneration tower, and the design pressure is relatively low； The lean liquid side enters the desulfurization tower at relatively high pressures; there is a concern that internal leakage in the plate exchanger under abnormal operating conditions could lead to overpressure on the rich liquid side, which is why safety valves are installed.