Low-temperature methanol washing
Thread Content
I have just started working in the coal chemical industry, specifically in the methanol washing process. Question: How to stabilize the operating conditions of methanol washing? What aspects need attention? Thank you! ! !
The main task is to stabilize the liquid levels in each tower, ensuring that these levels remain stable and that there is no air mixing. Instruments play a crucial role here; an effective automatic control system can help reduce many problems. It is also important to maintain proper balance of cooling capacity within the system
The key is to properly control the high, medium, and low pressures. Operating equipment should be inspected regularly to ensure it functions properly. The instruments and automatic control systems need to be sensitive and reliable
It’s actually simple in theory, but it’s hard to control in practice. The key is to control the liquid level and temperature of each tower.
First of all, it’s essential to carefully examine the PID diagram in order to become familiar with the equipment and control points in each process section； Secondly, it is necessary to read the operation procedures and operation tickets carefully, and become familiar with the operating principles as well as the control parameters such as temperature and pressure of various devices ； Once again, be familiar with the precautions for operating various devices ； The most important thing is to humbly seek advice from experienced craftsmen; knowledge gained through experience cannot be learned from books, and it is often these aspects that are crucial in practical operations. :)
The operation of low-temperature methanol washing involves several key aspects: 1. Stabilizing the liquid level in the system, which depends primarily on the performance of the control valves used for regulation； 2. Stabilize the pressure at various levels of the system ； 3. Control the water balance of the system, that is, the water content in the circulating methanol ； 4. Adjust the refrigeration load to achieve a balance of cooling capacity in the control system
Stability can be achieved by controlling the liquid level in each tower, the temperatures in the hot and cold areas, as well as the pressures at high and low levels; however, it is necessary to check each parameter
OP, there’s really no rush; take your time. This topic is too broad; it’s really difficult to provide a thorough answer to it. But there’s one fundamental principle that remains constant: in chemical engineering, stability depends on three parameters – P, T, and F. Controlling these well solves everything.
Thank you all for your advice. The key is the control of the methanol-water content.
There are three main towers under control: the scrubbing tower, the hydrogen sulfide concentration tower, and the thermal regeneration tower. Their T, P, L, etc. Among them, hydrogen sulfide concentration is the most difficult to control. Active participation :handshake