41- Discussion on the use of mobile vane separators for steam purging emissions from underground oil and gas storage tanks

Since storage tanks are often built in tank farms, not only underground tanks require regular steam purging, cleaning, inspection, and maintenance, but above-ground oil and gas tanks also need such regular steam purging, cleaning, inspection, and maintenance.

Removing condensate as well as oil and gas droplets from the steam purge emissions from oil and gas storage tanks is a necessary step to ensure that these emissions meet regulatory standards; however, this process is carried out on a short-term, intermittent basis during the operation of the tanks.

Since the condensate removal from the tank steam purge gas and the removal of oil and gas droplets are necessary but require short-duration operations, it is required that the demisting device be a movable unit that can be shared among multiple tanks, preferably in the form of skid-mounted units.

The steam purge gas used in oil and gas storage tanks must meet the requirements for regulated emissions, and its treatment process is often similar to that used for VOCs treatment; in the final stage, adsorption is employed to remove gaseous hydrocarbons from the exhaust gas.

The continuous operation cycle of the adsorbent is determined by its saturated adsorption capacity. To extend the continuous operation period of the adsorbent and reduce the average number of regeneration cycles, it is technically necessary that the raw gas entering the adsorption tower contain as little liquid phase material as possible (including water and oil), in order to prevent the accumulation of liquid phase within the tower, which could quickly saturate the adsorbent or even lead to the occurrence of a \"bubble column\" phenomenon.

This post was last edited by luoli519 on 2022-11-30 at 19:57. The design institute and the owner naturally thought of using the vane separator, a patented technology from NOVEL Company, to remove the liquid-phase contaminants present in the raw gas entering the adsorption tower.

Apart from having a slight effect on the liquid phase, it has no effect on the gaseous state; there are too many people trying to deceive others these days

This post was last edited by luoli519 on 2016-11-1 18:42. High-efficiency gas-liquid separation technologies and equipment are used in project process packages both domestically and internationally in recent years, such as those from Shell, SD, Davy, Dow, Lurgie, Linde, UOP, Lummus, Topsoe, Casale, etc. These well-known process package providers have a better understanding of kinetic separation technologies. Modesty always helps one to improve! Not everyone has the ability to thoroughly understand dynamic separation techniques.

The following content has been uploaded to the company’s official website www.novelenergytech.com: 1. Drawings of the parafoil separator； 2. Flow bed gas-solid separator drawings ； 3. Diagrams of the blast furnace gas vane separator ； 4. Drawings of horizontal super coalescing separator ； 5. Drawings of multi-factor swirl parent-child coalescence separator ； 6. Installation drawings for the vane-type demister in the multi-effect evaporation crystallizer for sulfuric acid production ； 7. Drawings of the hydrogen vane separator for pressure swing adsorption units ； 8. Drawings of the axial-flow multi-factor swirl parent-child separator for the coal gasification unit ； 9. Drawings of feather-leaf type natural gas separator ； 10. Vacuum demister drawings ； 11. Drawings of the oil-water feather-leaf type two-phase coalescing and separating separator ； 12. Diagram of the vane separator for the exhaust gases from the PVC unit; 13. Diagram of the separator in the suction section of the compressor that handles the gas from the coke oven gas holder ； 14. Drawings for the vane demister in the alkali scrubber tower ； 15. Diagrams of the vane demister in the degassing tower ； 16. Diagram of the demister for the rectifier tower fins ； 17. Diagram of the vane demister in the suction section of the hydrogen chloride compressor ； 18. Diagrams of titanium tetrachloride foam recovery separator ； 19. Vane demister in the suction section of the secondary steam compressor of the MVR multi-effect evaporator ； 20. Drawings for mobile vane demisters used for steam purging in underground oil and gas pipelines, etc. Additionally, listed below are the professional discussion threads posted by NOVEL on the Haichuan Chemical Industry Forum, for everyone to click and participate in the discussions: 13. Regarding the improvement of the inlet device for cyclone separators in gas-solid separation applications, please click http://bbs.hcbbs.com/thread-1614524-1-1.html to join the discussion. 14. Regarding the issues arising from the use of swirl tube/swirl plate demisters in the wet flue gas desulfurization process for boilers, please visit http://bbs.hcbbs.com/thread-1599605-1-1.html to participate in the discussion. 15. For discussions on the selection of separation internals for the gas-liquid separators in the gas distribution units of natural gas projects, please visit http://bbs.hcbbs.com/thread-1598340-1-1.htmll to participate in the discussion. 16. Regarding the issues of liquid presence at the outlet of the low-temperature separator in the natural gas dehydration unit and excessive dew point, please visit http://bbs.hcbbs.com/thread-1596842-1-1.html to participate in the discussion. 17. For discussions on the application of feather-leaf type high-efficiency gas-liquid demisting and defoaming separators in hydrogen fluoride plants, please visit http://bbs.hcbbs.com/thread-1601354-1-1.html directly. 18. For the technical upgrade plan for equipment used in the dust removal, tar removal, and separation of coke oven gas, please visit http://bbs.hcbbs.com/thread-1488997-1-1.html to participate in the discussion. 19. For solutions to the serious liquid carryover issue in the cycle hydrogen desulfurization tower of the hydrodesulfurization unit, please visit http://bbs.hcbbs.com/thread-1489614-1-1.html to participate in the discussion. 20. Regarding the issue of excessive ammonia nitrogen levels caused by the secondary steam extracted from the top of the multi-effect evaporation crystallizer used for sulfuric acid production carrying ammonium liquid droplets, please visit http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1565169 to participate in the discussion. 21. For discussions on methods for dust and foam removal from high-temperature coke oven gas, pyrolysis gas, and upgraded gas from low-rank coal that contain dust and tar, please visit http://bbs.hcbbs.com/thread-1565208-1-1.html to participate in the discussion. 22. For discussions on methods to prevent liquid hydrocarbons from entering the PSA unit for hydrogen purification in DCC/FCC reforming units related to hydrogen recovery, please visit http://bbs.hcbbs.com/thread-1565284-1-1.html to participate in the discussion. 23. For convenient solutions to the serious problem caused by liquid droplets carried in the recycle gas from methanol synthesis units, which affects subsequent LNG production and hydrogen production membrane systems, please visit http://bbs.hcbbs.com/thread-1565305-1-1.html to participate in the discussion. 24. 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For the exchange of experiences regarding the selection design, installation, operation, and maintenance management of the demister systems in power plant desulfurization scrubbers, please visit http://bbs.hcbbs.com/thread-1587700-1-1.html to participate in the discussion. 32. For solutions regarding the significant capacity expansion of power plant steam boilers while still using the existing flue gas desulfurization scrubber, please visit http://bbs.hcbbs.com/thread-1587710-1-1.html to participate in the discussion. 33. Regarding the bag filter and electrostatic precipitator for flue gas treatment in incinerators for waste salts and alkalis, as well as the multi-factor swirl-type primary/secondary safety separation dust collector, please visit http://bbs.hcbbs.com/thread-1588876-1-1.html to participate in the discussion. 34. 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Regarding methods to prevent secondary steam from carrying foam droplets into the steam compressor in MVR evaporators for wastewater containing salts and organic high-boiling substances, please visit http://bbs.hcbbs.com/thread-1633997-1-1.html to participate in the discussion. 51. For discussions on the application of high-efficiency gas-liquid demisting and defoaming separators in the titanium dioxide project using chlorination methods, please visit http://bbs.hcbbs.com/forum.php?m ... &extra=#pid16840111 to participate in the discussion. 52. For discussions on the use of mobile high-efficiency demisting and defoaming separators for the vent gases from underground oil and gas storage tanks, please visit http://bbs.hcbbs.com/forum.php?m ... &extra=#pid16846877 to participate in the discussion. 53. For an analysis and discussion on a case study of deficiencies in the design of a secondary steam baffle demister for MVR evaporators undertaken by a certain university, please visit http://bbs.hcbbs.com/thread-1634858-1-1.html to participate in the discussion. 54. Regarding efficient gas-liquid separation and defoaming measures for the secondary steam in the concentration, evaporation, and crystallization units of salt and alkali production enterprises, please visit http://bbs.hcbbs.com/thread-1636042-1-1.html to participate in the discussion. To be continued......

The last edit to this post was made by luoli519 on 2022-11-30 at 19:57. Regarding dynamic separation technology and the design calculations for its components, it should be noted that some manufacturers both domestically and internationally have begun to adopt the vaned separation components produced by NOVEL Company. However, the feather-leaf separation technology is the design result and configuration form obtained based on the design technology of its precise dynamic separation system platform. It is necessary to rely on the design results and configuration formats obtained from the technology for designing precise kinetic separation system platforms, taking into account fluid dynamics parameters such as the gas phase composition and average molecular weight under different temperature and pressure conditions, the comparative compressibility factor of gases based on air as a reference system, gas phase viscosity, gas phase density, and gas phase flow rate, as well as liquid phase density, liquid phase viscosity, liquid phase surface tension, and the maximum liquid phase flow rate.