Application prospects of LNG natural gas technology: Low temperature cryogenic container and storage tank manufacturers

Description :

　　[1] The application prospects of gas-liquid technology

　　Liquefied gas, abbreviated as LNG, is particularly suitable for expanding and peak shaving gas transmission and distribution systems in cities due to its high storage efficiency and flexible transportation properties, as well as advantages such as easy construction, low investment, and less susceptibility to external factors compared to gas storage tanks and containers. LNG can also be used as a vehicle fuel because its octane rating is higher than existing vehicle fuels, it has good blast resistance, and can burn with less exhaust pollution, which can improve engine life and reduce operating costs. Comparing compressed gas with LNG, LNG also has advantages such as high storage efficiency, extended driving range, lower cylinder pressure, light weight and small quantity, improvement coefficient, and no restrictions on gas supply network during station construction.

　　In China, the distribution of gas resources is different from the distribution of energy consumption levels, and even the opposite. The resources of gas are mostly concentrated in the west, while the application of gas is moving towards the southeast. Therefore, there is an urgent need to solve the problem of gas transportation. With the development of China's economy and infrastructure, the widespread use of gas by the people has become popular. However, such a long-distance gas transmission pipeline, with huge construction investment and technical difficulties caused by geological and geomorphological conditions in some areas, as well as high maintenance costs after completion, are all uncertain factors that can affect the flexible supply of gas to users in the middle and lower reaches of the Yangtze River. Secondly, as the layout of gas transmission pipelines is closely related to the vital interests of major gas suppliers, the utilization rate of gas transmission pipeline capacity in the short and long term should be considered. Therefore, when planning and designing the layout of gas transmission pipelines, it is necessary to predict the gas consumption scale of large, medium, and small cities in the short and long term based on the development laws of general cities. However, because these predictions are related to many uncertain factors such as social and economic environment, they become difficult to determine. Therefore, most gas suppliers choose to seek proximity rather than distance. This means that the gas pipeline network will only slowly undergo renovation and development in the future as gas demand increases. Thirdly, due to seasonal differences in national gas consumption and occasional malfunctions in gas pipelines, it can cause imbalances in gas supply. Therefore, it is urgent to build a large number of LNG peak shaving plants to play a peak shaving role. It is understood that LNG plants have many advantages over ground high-pressure gas storage tanks and underground gas storage facilities, such as lower investment costs, land conservation, shorter construction periods, and so on. Moreover, the transportation of liquefied gas is economical and has the characteristics of low risk and strong adaptability in long-distance transportation. In addition, some LNG tankers and ships can transport liquid gas from remote areas. With the development of the economy, gas is inevitably favored by urban residents due to its high combustion rate, environmental friendliness, and economic nature.

　　[2] Non destructive testing and protective measures for LNG storage tanks

　　In the non-destructive testing of LNG storage tanks, improving the protective awareness and skills of testing personnel is of great significance for the smooth implementation of testing work and the prevention of casualties.

　　1. Strengthen self-learning and improve professional competence

　　No matter what job you are engaged in, you should have two brushes, and LNG tank inspection personnel must have the corresponding qualifications to engage in this industry. To forge iron, one must also be self hardened. Testing personnel need to constantly improve their skills, keep the alarm bell ringing, enhance production awareness, improve production skills, and master the corresponding technical regulations and product testing standards for LNG storage tank equipment in their work. For example, boiler testing personnel should be familiar with the "Technical Supervision Regulations for Steam Boilers" and "Inspection Regulations for In Use Pressure Vessels".

　　2. Pay attention to the environment for detecting homework

　　For example, when boiler inspection personnel conduct internal and external inspections, the working environment should meet the following standards: clean the internal medium thoroughly, use blind plates to isolate all sources of liquids, gases, or vapors, and set up clear isolation signs: replace, neutralize, and clean flammable, combustible, toxic, or hazardous media; Open the furnace door, handhole, manhole, and inspection hole: isolate the container from other equipment and shut down the system itself. Of course, the on-site work environment should also have good lighting, smooth ventilation, and good hygiene conditions.

　　3. Familiar with protective measures

　　In non-destructive testing, radiographic testing poses some harm to the body, and the air, dust, and objects in the radiographic testing room have weak radioactivity after being exposed to radiation. Therefore, ideally, one should be fully armed in the testing room, wearing masks and radiation protective clothing, and take a shower after completing the work.

　　4. Operate according to regulations and take corresponding measures as required

　　Don't have a mentality of taking chances in your work, and don't ignore operational regulations just because of your long work experience. Only by taking corresponding measures according to regulations can you be foolproof. For example, when entering a pressure vessel for work, appropriate preventive measures should be selected based on the medium contained inside the vessel. Toxic materials should wear respirators, corrosive materials should wear chemical protective clothing, and flammable and explosive materials should never wear leather shoes with iron. At the same time, oxygen and ventilation should be measured inside the container. Only after passing the inspection can work begin. At least 2 people should cooperate with each other, wear ropes, and take protective measures.

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• Application prospects of LNG natural gas technology