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LNG storage tank booster
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Introduce
LNG storage tank booster (pry) is one of the important equipment in LNG gasification stations and other related places. It is mainly used to boost the low-temperature liquid natural gas in LNG storage tanks, so that it can overcome pipeline resistance and pressure requirements of subsequent process equipment, smoothly flow to gasifiers and other equipment for gasification treatment, and meet the demand of users for gaseous natural gas. It usually adopts a pry mounted structure, integrating the turbocharger, pipelines, valves, instruments, and control system on one pry body, which has the advantages of compact structure, small footprint, easy installation, use, and transportation.
Working principle
The operation of LNG storage tank booster (pry) mainly relies on automatic boosting regulating valve and self boosting air temperature gasifier. When the pressure inside the storage tank is lower than the set opening value of the automatic pressure boosting valve, the automatic pressure boosting valve opens, and the LNG in the storage tank flows into the self pressurized air temperature gasifier through the liquid level difference (its installation height should be lower than the lowest liquid level of the storage tank). In a self pressurized air temperature gasifier, LNG is vaporized into gaseous natural gas through heat exchange with air, and then the gaseous natural gas flows into a storage tank, raising the pressure inside the tank to the required working pressure. With the continuous inflow of gaseous natural gas, the pressure in the storage tank continues to rise. When the pressure reaches the closing pressure of the automatic pressure control valve (about 10% higher than the set opening pressure), the automatic pressure control valve closes and the pressure boosting process ends. As the gasification process continues, when the pressure inside the storage tank is lower than the opening pressure set by the booster valve, the automatic booster valve opens and starts a new round of boosting.
Design
● Structural design: Typically, a modular integrated design is adopted, which integrates components such as an air heated gasifier, pipelines, valves, instruments, and automatic pressure control valves onto a single block. The structural design of the pry block should consider the reasonable layout of the components for easy operation, maintenance, and repair, while ensuring sufficient strength and stability to adapt to different installation environments.
● Material selection and design: Components such as pipelines and valves that come into contact with LNG are usually made of low-temperature resistant materials such as stainless steel and aluminum alloy to prevent brittle cracking and other phenomena in low-temperature environments. Air heated gasifiers are generally made of 6063 aluminum with good thermal conductivity, which is pressed into star shaped tubes to improve heat transfer efficiency.
● Control system design: Equipped with a complete control system, including pressure sensors, temperature sensors, automatic pressure control valves, etc., it can monitor the pressure and temperature parameters in the storage tank in real time, and automatically control the operation of the booster according to the set values, achieving an automated boosting process and ensuring that the tank pressure is stable within a certain range.
Parameter
● Working pressure: Generally determined based on the working pressure of LNG storage tanks and subsequent process requirements, the common working pressure range is around 0.6-1.2MPa.
● Flow rate: It varies depending on the scale and gas demand of LNG gasification stations, usually ranging from a few hundred cubic meters per hour to several thousand cubic meters per hour, such as 200-3000 cubic meters per hour.
● Gasification temperature: The temperature of LNG entering the booster is generally around -162 ℃, while the temperature of gaseous natural gas exiting the booster is usually about 10 ℃ lower than the ambient temperature.
● Heat exchange area: Designed and calculated based on gasification capacity and heat transfer requirements to ensure that LNG can be fully gasified in the booster. Common heat exchange areas range from tens of square meters to hundreds of square meters.
Hebei Zhengxin Energy Equipment Co., Ltd. is a professional enterprise mainly engaged in the research and development and production of cryogenic equipment and gas equipment. The company has the qualification of pressure pipeline component assembly device (TS27136132027) and pressure pipeline installation (TS3813673-2027), and complies with the international quality management system and has been reviewed by GB/T9001-2016-1S09001:2015 certification and multiple invention patents; the company has been committed to the research and development, design, production, installation, sales and after-sales service of industrial cryogenic equipment and gas transmission and distribution equipment. Our company mainly develops and manufactures: LNG gasification station, gas pressure regulating skid (box), gate station distribution equipment, CNG pressure reducing box (box), low-temperature gasification equipment, LNG filling station equipment, modern workshop centralized gas supply equipment, etc. The company's products are well-known both inside and outside the province for their sound physique, reliable quality, excellent technology and high-quality service. The products are now available in all provinces, cities and autonomous regions in China.
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Add: East of Fenghuang Road, Nangong City, Xingtai City, Hebei Province, China
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