Gasifier gas combination scheme

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Gasifier pressure increase； Once the pressure in the gasification furnace rises and the system pressure stabilizes, stop increasing the pressure when it is slightly higher than the system pressure by 0.2–0.3 MPa. When the pressure difference between Furnace No. 2 and the system pressure is ≤ 0.5 MPa, inform the on-site personnel to open the single-series pneumatic-hydraulic-electric valve EV2002, and the control room should activate HV2008 to equalize the pressure. After equalization is completed, open valve HV2004 to start adjusting the system load: gradually increase the feed rate for furnace #2 while correspondingly reducing it for furnace #1, keeping the total amount constant (at a rate of 1 m3 of slurry per minute). Inform the dispatch team to monitor and ensure stability in the total amount of oxygen produced by the air separation unit; the maximum total oxygen consumption shall not exceed 80,000 Nm3/h. Once the temperature at the outlet of the gas scrubbing tower, TI2015, reaches above 200 degrees (with a temperature difference from the system not exceeding 20°C), notify the dispatch team and the subsequent systems to get ready for gas introduction ； System gas balancing: The control operator gradually shuts down PV2011A/B, first closing valve PV2011A, while the 1# gasifier that is to be shut down slowly opens PV1011A/B (usually valve A is opened first). During adjustment, monitor the gas flow rate at the low-pressure methane inlet FI0001; the maximum allowable fluctuation should not exceed 3000 Nm3/h. The person on duty, who is in charge of the operation, is responsible for monitoring fluctuations in gas volume. When the coal slurry fed to Gasifier No. 2 reaches a level close to the production load, PV2011B of Gasifier No. 2 is gradually closed in full, while the vent valve PV1011B of Gasifier No. 1 is gradually opened, and HV1004 is gradually closed. If there are fluctuations in the inlet gas volume due to low thyroid levels during that period, adjust the load of Gasifier No. 2 in a timely manner until the gas volume stabilizes. Once the vent valve PV1011B of Gasifier No. 1 is gradually opened to increase the gas flow rate and no fluctuations occur in the system pressure, with all system parameters being normal, notify the dispatch team and the air separation unit to prepare for shutting down Gasifier No. 1. We have two operating gasification furnaces with one as a backup. Do any experts in the group have better solutions for combining these furnaces?