Discussion on liquid nitrogen cryogenic processing
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The storage tanks in the tank farm already have nitrogen sealing in place, and oil and gas recovery facilities have been installed. It is necessary to add additional nitrogen sealing to these tanks; the oil and gas emitted as a result of this sealing should be directed to liquid nitrogen cryogenic treatment facilities for processing. Online monitoring devices must be installed at the gas emission outlets of liquid nitrogen cryogenic treatment facilities; oil and gas can be released into the atmosphere only after they meet the specified standards. Is this technology mature at present? What are the various processes? Everyone is welcome to discuss
Oil vapor can be condensed into a liquid or solid state through low-temperature cooling, and the deposition of liquid particles in the gas phase enables oil separation. It should be feasible. This requires some special equipment and processes; it would be best to include a flowchart to facilitate discussion.
Liquid hydrocarbon storage tank? How much is the volume of respiration? Theoretically it is feasible; economically, it is necessary to calculate the monthly evaporation cost of liquid nitrogen and the value of oil and gas recovery
This post was last edited by goldliyang on 2021-7-1 21:45. In this mature process, oil and gas are condensed through deep cooling; the non-condensable gases are discharged in compliance with regulations. Liquid nitrogen is vaporized for cooling purposes, resulting in nitrogen that is then reused in the nitrogen supply network.
In most cases, it is required that the cryocooler cool the exhaust gases to below the freezing point of the main VOC components, so that these VOC components solidify and deposit on the tube walls; only then can the treated exhaust gases meet the specified standards. Therefore, cryocoolers generally require two units to operate in parallel and be switched back and forth, with one unit being in use while the other is taken offline for deicing and solvent recovery.
This post was last edited by WQH518 on 2021-5-24 at 12:58. In most cases, it is required that the cryocooler cool the exhaust gases to below the freezing point of the main VOC components, so that these VOC components solidify and deposit on the tube walls; only then can the treated exhaust gases meet the specified standards. Therefore, cryocoolers generally require two units to operate in parallel and be switched back and forth, with one unit being in use while the other is taken offline for defrosting and solvent recovery; there are some specific details regarding the system configuration and operation.