Coal quality inspection equipment and instruments include many types, such as calorimeters, sulfur analyzers, muffle furnaces, drying ovens, etc. The quality indicators for detection vary, and so do the required equipment and instruments.
The sulfur analyzer is the main instrument for measuring the sulfur content in coal (the determination of sulfur content in petroleum adopts the microcoulometric method). Total sulfur content in coal. It is one of the important indicators for evaluating the quality of coal and also one of the main components of air pollution. Therefore, both the coal production sector and the coal-consuming sectors such as fertilizers, power generation, civil use, coking and building materials attach great importance to the analysis of total sulfur in coal.
Solutions to unstable airflow in the sulfur analyzer purifier:
Firstly, if the flowmeter is not adjusted properly or stably, it will directly affect the size difference of the total sulfur content measured, and the total sulfur content in coal cannot be accurately detected.
There are several situations that can cause unstable gas flow in the flowmeter
1. The air intake path is not unobstructed;
2. The air passage inside the purifier is not unobstructed.
3. The air pump's air extraction is weakened;
Sometimes, the gas flowmeter cannot be adjusted and remains at the bottom all the time. In cases like this, we can identify the problem through the step-by-step elimination method and then solve it.
First, remove the small rubber stopper at the upper part of the electrolytic cell and observe whether the flow particles rise. If it does not rise, it indicates that the internal air passage of the purifier is blocked. It is necessary to check whether there is any debris blocking the air pipe connecting the drying tube and the flowmeter. If it rises, it indicates that the purifier is functioning properly.
Second, remove the air pipe leading to the furnace body (referring to the air pipe connecting the electrolytic cell and the reducer). If it does not rise, check whether the filter hopper of the electrolytic cell is clogged. If it passes through, it is a problem of tar blockage. Clean it thoroughly and you can prick a few holes with a needle. If it doesn't rise, it's a problem with the filter device leading to the middle of the reducer.
The above problems are frequently encountered in coal quality testing. Often, new laboratory technicians cannot understand them and are at a loss when facing problems. We hope that the analysis and answers provided by the technicians of Huanuo Instruments will be helpful to everyone.

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