How to avoid problems when using low-temperature storage tanks and how to complete the work specifically

Firstly, how to avoid problems when using low-temperature storage tanks? LNG storage tanks are mainly used for storing some gases. In order to avoid some problems during their use, we need to do the following for the use of LNG storage tanks: 1. Regularly analyze the concentration of acetylene in liquid oxygen, control the concentration below 0.1 × 10-6, otherwise liquid oxygen should be discharged; 2. When using LNG storage tanks for liquid oxygen sealed storage, someone monitors the pressure to prevent overpressure; 3. Liquid oxygen should not splash onto unprotected skin to prevent serious incidents; 4. When the storage tank has been emptied of all liquid but cannot be heated immediately, close all valves immediately. Due to the low temperature inside the tank, humid air can enter the interior through the connected pipes, causing accidents such as freezing and blockage of the pipes. The excellent characteristics of low-temperature storage tanks include: 1. The production of LNG storage tanks adopts excellent internal insulation structure design, which has higher insulation performance and excellent performance than traditional structures. The use of independent innovative vacuum pumping technology and vacuum helium mass spectrometry leak detection can protect the vacuum life of the storage tank for a long time, and the static evaporation rate is better than the industry standard requirements. 2. Innovative modular pipeline design is used for LNG storage tanks, with a compact structure, centralized control, and easy operation. 3. Equipped with a reliable pair of lateral supports and lifting lugs for safe lifting and transportation of storage tanks. Secondly, how does the low-temperature storage tank perform its work? Users who have used natural growth gas storage tanks should know that its functions are very strong and generally do not encounter unexpected situations. Many times, everyone should use it according to the requirements. However, you can also pay attention to some usage principles to clarify its working status. Below is a specific introduction. The main body of a low-temperature storage tank is generally a main cylinder made of stainless steel plate. The volume of the low-temperature storage tank ranges from 1m3 to several hundred m3. In design and processing, attention should be paid to a tight and reasonable structure. It is an industrial device used for microbial fermentation. Low temperature storage tanks require sufficient air to meet the aerobic requirements of microorganisms. Therefore, the larger the amount of air introduced, the more oxygen microorganisms are likely to obtain. Secondly, the higher the height of the culture medium layer, the longer the air stays in the culture medium, which is beneficial for microorganisms to utilize oxygen in the air. However, oxygen in the air is transferred to microorganisms through the culture medium, and the transfer rate largely depends on the mass transfer area of the gas-liquid phase, which means it depends on the size and residence time of the bubbles. The smaller and more dispersed the bubbles, the more abundant the microorganisms can obtain oxygen. The stainless steel fermentation tank should be stirred as much as possible to ensure that microorganisms can be deeply exposed to sufficient oxygen and nutrients in the culture medium in every part of the tank. In addition, good stirring is beneficial for the heat generated during the microbial fermentation process to be transferred to the cooling pipes and the cooling inner surface of the fermentation tank. This is why low-temperature storage tanks with ventilation and stirring are commonly used in biochemical engineering. Low temperature storage tanks are usually equipped with several radial disc turbine agitators, but it is easy to cause the stirred medium to layer and form several zones, resulting in an oxygen partial pressure gradient between the lower and upper parts of the tank, leading to differences in KLa values between the upper and lower parts of the tank.