I would like to ask everyone what the optimal settings for the inlet and outlet temperatures in gas generation are

⑴The high rising temperature in the gas generator not only results in excessive sensible heat being carried away by the gas, increasing fuel consumption, but it can also lead to slag accumulation on the walls surrounding the furnace if not handled carefully. An excessively low upward temperature indicates a low temperature in the gasification zone; this may be due to too low an amount of air supplied to the furnace, or too much steam being blown downward, or it could also be because the gasification zone has shifted downward. This directly affects the amount of gas produced by the gas generator as well as the quality of the gas. Using anthracite as the raw material, a furnace temperature of 350°C is appropriate. ⑵If the temperature at the lower part of the gas generator is too high, it indicates that the gasification layer has moved downward; this not only affects the amount of gas produced by the gas generator but also can damage equipment such as the grates and ash trays ； If the temperature is too low, it means that the vaporization layer moves upward, which also affects the amount of gas generated. Additionally, a low temperature in the lower sections leads to incomplete combustion, resulting in a high carbon content in the slag and increased fuel consumption. Using anthracite as the raw material, a furnace temperature of 280°C is appropriate. ⑶The control of temperatures during the upward and downward processes relies primarily on an appropriate distribution of blowing time, upper and lower blowing periods, as well as adjustments to the volume of air and steam used. Therefore, appropriate process parameters should be selected for stable control, and adjustments should be made in a timely manner based on temperature changes, to ensure that the temperatures during the upward and downward processes remain within suitable ranges. ⑷The control of upstream and downstream temperatures is also closely related to the ash melting point, fixed carbon, and volatile matter.

Due to the poor quality of bituminous coal at present, high upward temperatures can easily exacerbate fragmentation, leading to issues such as blowing over and material sticking to the walls, while high downward temperatures can damage the equipment at the bottom of the furnace. We currently keep the upward temperature below 300°C, the downward temperature between 200 and 280°C, and the CO2 level in the gas between 7 and 9.