Talking again about the operating conditions of coal-water slurry gasifiers
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When it comes to the \"optimal operating condition of a water-coal slurry gasifier\" at home, this represents an ideally ideal state from our perspective – one in which various operational parameters, control metrics, material consumption, and cost-effectiveness are all able to meet the design requirements, or even exceed them. On the other hand, the skill levels of operators and technicians are direct influencing factors ； The unknown factors operating within the system are yet another critical factor affecting the performance of the equipment; how can fluctuations in the system be avoided to prevent corresponding fluctuations in the vaporization furnace? It is an important challenge for operators and technicians, and something that our operators must master skillfully; this requires the accumulation of experience and professional skills over time.
System fluctuations mainly originate from the upstream and downstream areas of the gasification unit. Specifically, on the upstream side, there are fluctuations in the oxygen supply from air separation. Our company has experienced two shutdowns due to issues with the air separation liquid oxygen pumps. Downstream are units such as methanol, acetic acid, or dimethyl ether. Additionally, attention must also be paid to the impact of changes in coal type on gasification operation.
Measure the methane concentration at the syngas outlet to determine the temperature of the gasifier
The original poster said it very well. In fact, stable operation is the primary goal. As for optimizing operations to achieve better cost-performance, it is a worthy goal. We are committed to this!
This is due to different people in different positions, different people in the same position, differences in technical skill levels, and operating habits. Those who work in shift systems can notice that different teams have varying levels of efficiency, resulting in different output amounts despite the same input.
1. For the stable operation of the gasification system, even when there are fluctuations in the oxygen flow rate and oxygen concentration upstream, the conversion, purification, and synthesis stages downstream should be less affected. This can be achieved either through load reduction control or by adjusting the amount of raw gas emitted (although this results in resource waste). 2. The stable operation of the gasification system requires operators to be careful and bold. Adjust frequently but with few variables; be proactive and familiar with the entire process flow (including the types, locations, and statuses of valves, as well as the location and status of blind flanges) ； 3. Set the variation curves in a timely manner as needed, and pay attention to changes in the quantities of various materials and relevant parameters ； 4. When encountering problems, analyze them calmly, report them in a timely manner, and take measures to control the situation