The liquefied gas used in the gas separation unit has variable properties and its supply is intermittent; what precautions should be taken during operation to ensure that the product quality remains satisfactory?
Thread Content
The liquefied gas used in my gas treatment equipment is purchased from various sources, and its composition varies greatly; it contains high levels of ethane and propane. Sometimes, the properties of this liquefied gas change every 3.4 hours. The temperatures at the bottom and top of the tower, as well as on the feed plate and sensor plate, can vary significantly from the normal temperatures, which can easily lead to substandard product quality. I would like to ask everyone what precautions should be taken under such conditions, and how can we ensure that the quality of the top tank is satisfactory? What precautions should be taken when handling the material in the tank in case of a liquefied gas supply interruption?
A frequency of change in properties every three to four hours is too high; we have not encountered such a situation. We should strive to keep the tower pressure, temperature, and reflux rate under control, especially the tower pressure, which should be maintained at a stable level during pressure relief. The best way is to address the problem by starting with raw material procurement.
The original post was posted by Yixiao Dongfeng on 2009-3-28 at 22:02. The liquefied gas used in my device is purchased from various sources, and its composition varies greatly; it contains high levels of ethane and propane. Sometimes, the properties of this liquefied gas change every 3.4 hours. The temperatures at the bottom and top of the tower, as well as those on the feed plate and the sensitivity plate, can vary significantly from the normal values, which can easily lead to defective product quality... In such cases, the operators have to work hard and make frequent adjustments; automation isn’t an option in these situations. Also, the load should not be too high, otherwise it’s difficult to obtain satisfactory results. Special attention must be paid to the operations in Tower 2, as it’s important to prevent carbon dioxide from reaching the propane tower. However, since the yield of propylene is controlled in Tower 2, you can increase the pressure in that tower – this should help
Find a large tank, mix the materials there first before feeding them into the device; this should improve the situation. It’s important to control all the parameters – the feed rate, temperature, liquid level, and pressure. To ensure quality during operation, when the components fed in are not uniform, it’s necessary to conduct more tests and analyses, and adjust the temperature, pressure, and reflux levels accordingly based on the different components involved.