Combustion control method of combustion device and heating furnace

Abstract

A burning device can burn with fuel gas and / or fuel oil in fuel, is easy to repair, maintain and the like, and can restrain the case that the fuel oil burns incompletely to make coal attach to an oil nozzle to block while burning the two fuels. A gas nozzle (13) spraying the fuel gas and the oil nozzle spraying the fuel oil are arranged at the different positions far away from an air nozzle spraying burning air, so that the fuel gas is sprayed towards the burning air sprayed by the air nozzle (11) from the gas nozzle (13). In the other hand, the fuel oil is sprayed towards the burning air sprayed by the air nozzle (11) from the oil nozzle (16).

Description

technical field [0001] The present invention relates to a combustion device that uses fuel gas and fuel oil as fuels used for combustion, and a heating furnace that uses the above-mentioned combustion device to heat an object to be processed. In particular, there is an advantage that not only fuel gas and / or fuel oil can be used as the fuel used in the combustion device, but also that repairs, maintenance, etc. can be easily performed on the combustion device. , It can also suppress the incomplete combustion of fuel oil, which will cause coal to adhere to the oil nozzle and cause clogging. Background technique [0002] In conventional combustion devices, those using fuel gas and those using fuel oil as fuel used for combustion are generally used. [0003] In addition, in the above-mentioned combustion device, when fuel gas and fuel oil are combusted, the fuel gas and fuel oil are efficiently contacted and burned with combustion air. Gas nozzles for ejecting fuel gas and oi...

AI Technical Summary

Problems solved by technology

[0004] Here, in the combustion apparatus in which gas nozzles and oil nozzles are provided on the inner peripheral side of the air nozzles for ejecting combustion air in this way, when the fuel used is switched between fuel gas and fuel oil, the following various Problem: It is very troublesome and time-consuming to replace the piping, etc., and it also increases the cost, etc.

[0009] However, in the above-mentioned regenerative combustion device, since only the gas nozzle for ejecting fuel gas is provided, when the fuel used is changed from fuel gas to fuel oil, there is a problem that it needs to be replaced. Piping work, etc., is very troublesome and time-consuming, and increases the cost

In addition, only by mixing the fuel gas ejected from the gas nozzle with the combustion air ejected from the air nozzle and combusting the fuel gas as described above, there is a problem that it is difficult to change the shape of the flame according to the purpose so that the heating furnace issues such as proper heating of the processed object within the

Images