Difference in material between the hot high-pressure tank and the cold high-pressure tank

There are generally two processes for separating reaction products: one is the cold high-pressure process； Another is the high-temperature fractionation process. Typically, all of the reaction products undergo gas-liquid separation after passing through an air cooler, a process known as the cold high-pressure separation process ； All the reaction products are first subjected to gas-liquid separation at a certain temperature; the oil and gas that emerge from this process are then cooled by heat exchange before undergoing a second separation step, a process known as the thermal high-pressure separation process. Both the hot high-pressure separation process and the cold high-pressure separation process are technically feasible. Compared with the cold high-pressure process, the hot high-pressure process is more cost-effective in terms of energy savings and reduced area requirements for high-pressure heat exchangers, as demonstrated by numerous data comparisons from both domestic and international sources. Cold high-yield process: the process is relatively simple, hydrogen loss is relatively low, and the investment required is low ； The high-temperature fractionation process is relatively complex, with relatively high hydrogen loss. Although the high-temperature high-pressure process reduces the size of some high-pressure heat exchange equipment, it requires more equipment and instruments, resulting in higher initial investment ； Another important advantage of the thermal high-separation process is that it prevents the precipitation of polycyclic aromatic hydrocarbons in solid form at low temperatures, as well as the emulsification that occurs in the cold high-separation process. This makes it particularly suitable for situations where the raw materials are heavy and for full-cycle processes. Therefore, the choice depends on the specific conditions of the company; if the raw materials are lighter, the cold high-separation process can be used

The material used for high-temperature high-pressure applications is 12Cr2Mo1R plus cladding, while the material used for low-temperature high-pressure applications is 16Mn (R-hic) forgings plus Q345R. Of course, it’s clear from the materials used that high-temperature high-pressure materials can replace those used for low-temperature high-pressure applications; the reverse is not possible!

What is the difference in the operation of cold high-score and hot high-score devices? Are there any operating procedures for high-temperature applications?