The influence of steam generator outlet gas flow rate on temperature!
The influencing factors of the temperature change of the superheated steam of the steam generator mainly include the change of the temperature and flow rate of the flue gas, the temperature and flow rate of the saturated steam, and the temperature of the desuperheating water.
1. The influence of flue gas temperature and flow velocity at the furnace outlet of the steam generator: when the flue gas temperature and flow velocity increase, the convective heat transfer of the superheater will increase, so the heat absorption of the superheater will increase, so the steam The temperature will rise.
There are many reasons that affect the flue gas temperature and flow rate, such as the adjustment of the amount of fuel in the furnace, the strength of combustion, the change of the nature of the fuel itself (that is, the change of the percentage of various components contained in coal), and the adjustment of excess air. , the change of burner operation mode, the temperature of the steam generator inlet water, the cleanliness of the heating surface and other factors, as long as any one of these factors changes significantly, various chain reactions will occur, and the It is directly related to the change of flue gas temperature and flow rate.
2. The influence of the saturated steam temperature and flow rate at the superheater inlet of the steam generator: when the saturated steam temperature is low and the steam flow rate becomes larger, the superheater is required to bring more heat. Under such circumstances, it will inevitably cause changes in the working temperature of the superheater, so it directly affects the temperature of the superheated steam.