165results about How to "Raise the firing temperature" patented technology

A manufacturing method of magnesian pellets is particularly used in enterprises adopting a grate-rotary kiln process to manufacture the magnesian pellets. The manufacturing method of the magnesian pellets comprises ingredients by weight: 94-98% of iron powdered ore, 2-4% of high magnesium oxide (MgO) content fusing agent and 1.0-2.5% of bentonite, wherein proportion of the iron powdered ore with grain size smaller than 0.074mm is higher than 80%, and moisture content of the iron powdered ore is lower than 7.5%. The manufacturing method comprises the following steps of: evenly mixing the iron powdered ore and the high MgO content fusing agent, conducting high pressure roller-milling pretreatment, enabling the proportion of the iron powdered ore with grain size smaller than 0.005mm to be 11%-20%, and then mixing, pelletizing and roasting with the bentonite. The manufacturing method can reduce preheating temperature of the pellets, simultaneously, can further improve strength of the pellets to enter a rotary kiln, shortens high-temperature roasting time and solves the technical problems of high preheating temperature, low pellet preheating strength and long high-temperature roasting time when the MgO pellets are manufactured.

A gas turbine group is provided with at least one cooling apparatus for cooling the working medium before and / or during the compression. The cooling power of the cooling apparatus can be adjusted by suitable means. A controller controls the cooling power of the cooling apparatus as a function of a control deviation in the useful power of the gas turbine group. The cooling controller interacts with other controllers of the gas turbine group in such a way that the gas turbine group is itself always operated at least close to its full load operating state. In this context, it is preferable for the inlet guide vane row of the compressor to be maximally open, and for the hot-gas temperature on entry into the turbines to be controlled so that it is constantly at an upper limit value.

In a gas turbine electric power generator where rotational speed of the gas turbine is synchronized to the electrical frequency of a power distribution grid and the gas turbine includes a compressor component, an air extraction path, and a control system for controlling an amount of compressor air extraction, a method is provided for controlling output power produced by a gas turbine. The method includes initiating compressor air extraction and controlling the amount of compressor air extraction.