Do you know the risks of the gasifier level gauge during the flushing process?

With the continuous use of flowmeters now, more and more users will choose a flowmeter that suits them, but there are some uncertain risks in the process of measuring the level of gas gasifiers and flushing. There are factors in it. In this article, the editor will talk to you about which risk factors will appear below?

(1) The alarm rate increases and the interlock rate decreases.

When the process conditions are relatively stable, when the gasifier liquid level gauge fluctuates, the technicians will contact the instrument personnel to manually flush the liquid level gauge membrane box. Furnace Shutdown" interlock is removed, which will result in a drop in the interlock rate. When the liquid level gauge fluctuates frequently in the low alarm value (about 15%), the alarm rate increases, and the alarm is frequent. The central control is tired of the alarm and ignores other abnormal alarms, which has potential safety hazards.

(2) The indication of the liquid level gauge is inaccurate, which affects the operator's judgment and misses the maximum processing time.

The gasifier level gauge is inaccurate, and there is a risk of empty tanks. When the tank is empty, the risk of high pressure channeling and low pressure is high, resulting in overpressure of the flash tank and damage to the equipment pipeline. When the actual liquid level is low, the water bath effect of the descending pipe is poor, and the long-term operation will cause the deformation of the descending pipe and shorten the service life. The actual low liquid level will shorten the slag settling process, and the black water containing a large number of ash particles will enter the flash evaporation system, which will increase the ash content of the entire gray water system, increase the possibility of equipment and pipeline blockage, and affect the long-term stable operation of the system. . The indication of the liquid level gauge is not accurate. When the actual liquid level is high, it will cause the syngas to carry water, which will increase the system load of the latter section.

(3) There are certain risks in the flushing process of the gasifier level gauge.

During the operation of the gasifier, the low indication of the liquid level gauge will cause the gasifier to interlock and stop, and the interlock will be removed before flushing. At present, the gasifier is running at 2 open and 1 standby, and the flushing of the liquid level gauge is manually flushed by the instrument personnel. If the communication is not in place, the flushing system and the tag number will be wrong, resulting in the normal operation system (the interlock is not removed) due to the low indication of the liquid level gauge. Low (choose two out of three) causes parking.

The flushing water of the gasifier level gauge is the system SW. Improper operation of the flushing personnel will cause the outlet pressure of the boiler water pump (P0203) to drop, resulting in a self-starting accident of the pump and affecting the use of the system SW. If the flushing time is too long, the usage of SW will increase and the running cost will increase.

There is a risk of 3 liquid levels fluctuating at the same time when flushing the gasifier liquid level meter. The gasifier liquid level meter indicates low and low (choose two out of three), which will not only interlock the gasifier to stop, but also cause the slag locking system to stop. The flushing level timer liquid level reaches the interlock value, which will cause the slag lock program to run abnormally.

Well, after washing the above situation, you can find the source of the problem in the process of using it, solve the problem in time, and avoid the danger of risk. What news and information you want to know are welcome to log in to Weihai Kunke Flow Instrument Co., Ltd.* for inquiries at any time.