What is the main factor preventing long-term continuous production in coal gasification?
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What is the main factor that prevents continuous production over a long period due to gasification? What is the primary reason for the inability to operate continuously or for the need for maintenance?
Different technologies may have different focal points for various reasons. Common explanations include: 1. Unstable coal quality management, which poses challenges in terms of adaptability; 2. Insufficient operation control, leading to frequent blockages; 3. Low standards in maintenance work, making it difficult to deal with wear-related failures; 4.
Under normal circumstances, considering all aspects, the main bottleneck is the burner issue! The environment is too harsh; the wear and tear is severe!
What kind of vaporizer is it? If it is a SHELL system, the main issues are as follows: 1. Excessively high pressure difference in the high-temperature and high-pressure filter; 2. High pressure difference in the superheating section; 3. High overall pressure difference in the gasification furnace; 4. Corrosion problems in the quenching section; 5. Corrosion of the burners; 6. Heat transfer issues with the water-cooled walls
Mainly, there are many conditions that can trigger a major outage at 13UZ, and there are no backups for the critical equipment.
There are quite a few parameters that can lead to serious consequences
1. Equipment-related reasons] 2. Instrument-related reasons 3. Operational reasons
I disagree with the opinions expressed on floors 5 and 6. Interlocks are primarily safety measures; removing them would pose a great risk. On January 28, 2006, at 7:40, the coal slurry gasification unit in Shenmu, Shaanxi, experienced an explosion in the synthesis gas pipeline due to the removal of the interlock that triggered an alarm when the coal slurry flow was too low. As a result, the coal slurry pump stopped working for 7 minutes, causing an excess of oxygen in the synthesis gas pipeline. Although no injuries occurred, the internal components of the converter furnace were damaged. Repairs began on New Year’s Eve and continued until the seventh day of the first lunar month before the unit could be restarted. I also disagree with the claim that both coal slurry flow meters at Shanxi Fengxi Chemical Company are not functional; a monitor should be installed on site so that operators can monitor pressure fluctuations from the control room. I feel that there are many factors that affect the operating cycle of the gasification furnace; in the case of the water-coal slurry system, factors such as coal quality, burners, refractory bricks in the gasification furnace, slag treatment systems, and slag locking valves influence the operating cycle. Dry powder furnaces are also affected by factors such as coal locking valves and slag locking valves, slag treatment systems, ash, and fly ash, which influence their operating cycle.
The main issue is probably related to the instruments; every time we stop operation, it’s due to problems with the instruments. The next possible cause is issues with the burners – it seems that all current burners are still in the testing stage, and none of them can be used reliably. Additionally, it’s likely that the problem lies with the valves, either due to wear or internal leakage.