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Lanhua Coal Chemical’s raw coal consumption remained at a favorable level in May. Author/Source: Lanhua Newspaper. Date: 2022-06-22. Clicks: 9. In May, through measures such as maintaining stable operation of the gas furnaces, making process adjustments, and fixing leaks in equipment, Lanhua Coal Chemical used 636.27 kilograms of raw coal to produce urea, which is 12.73 kilograms less than the planned amount and 28.22 kilograms less than the figure for the same period, thus keeping raw coal consumption at a favorable level. Removing obstacles creates favorable conditions. The company cleaned each self-cleaning filter bag individually, removed obstructions from the half-decarbonization tower, and reduced the system operating pressure from 13 KPa to 10 KPa. At the same time, maintain the quality of carbon blocks, ensure stable operation of the furnace charge, optimize the carbon ratio, and keep all process parameters at their optimal levels. Process adjustments are followed up promptly. All 8 gas burners in the company are operating using lump charcoal to keep five units at full capacity; the air pressure fed into the furnaces is being gradually reduced, resulting in a significant decrease in the amount of material discharged ； Reduce the amount of steam used for upward and downward blowing, keeping the carbon dioxide level in the main pipeline below 8.8%. By carefully controlling the temperature below the furnace, the amount of residual carbon in the ash was reduced, thereby extending the service life of the equipment located there. The temperature at the furnace skirt was lowered from 300°C to 240°C, which helped maintain the efficient operation of the gas furnace. Equipment leak prevention for safeguarding. The company has strengthened the management of leak prevention in gas burners; the persons responsible for operating these burners conduct regular inspections to check their performance, and any leaks are reported promptly. Based on the production requirements, leak repair work is carried out in a systematic manner to ensure high quality of repairs and prevent the need for rework. The stable operation of the equipment not only avoids environmental pollution at the site but also reduces material consumption.