Texaco gasification
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A high temperature trip is installed on the pipeline leading from the gasifier’s syngas to the Venturi scrubber. What is the purpose of setting this trip interlock? What does this chain jump value generally relate to?
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Based on temperature and pressure, it is possible to determine whether the slag outlet is blocked. A high temperature indicates that there is a blockage in the process gas pipeline; as a result, the liquid level in the gasifier will rise while the liquid level in the carbon scrubber will drop. These changes show clear trends, and it is necessary to reduce the load promptly and keep the furnace temperature lower than usual. Once the exhaust gas temperature returns to normal, the furnace temperature can be increased again. If there is a blockage in the process gas pipeline, the exhaust gas pressure will decrease significantly, indicating that the furnace temperature is too low and the slag begins to accumulate at the furnace outlet.