Fuel adjusting system for heating furnace, fuel adjusting method and heating furnace

Abstract

The invention relates to a fuel adjusting system for a heating furnace, a fuel adjusting method and the heating furnace. The fuel adjusting system comprises a first temperature monitoring unit, a second temperature monitoring unit, a mixed temperature monitoring unit, a correction temperature calculating unit for calculating the first correction temperature TU1 and the second correction temperature TU2, a first fuel control unit and a second fuel control unit. The first fuel control unit is used for comparing the first correction temperature TU1 with the mixed temperature set value T, and theflow or pressure of first fuel is adjusted. The second fuel control unit is used for comparing the second correction temperature TU2 with the mixed temperature set value T, and the flow or pressure ofsecond fuel is adjusted. The fuel adjusting system for the heating furnace, the fuel adjusting method and the heating furnace solve the problems that during heating furnace two-path design, temperature influences and mixed main pipe temperature changes of the other path need to be considered for temperature adjustment of one path, the problem that due to the improper heating furnace single-path operation temperature, deviated combustion is caused is solved, the operation period of a furnace pipe is prolonged, and the automatic control level and the economic benefits of the device are improved.

Description

technical field [0001] The invention belongs to the field of chemical engineering, and in particular relates to a fuel regulating system for a heating furnace, a fuel regulating method and a heating furnace. Background technique [0002] A conventional heating furnace is usually equipped with a furnace, and the furnace tube of the heating furnace can be fed by one or more channels. The outlet of the heating furnace is combined with each outlet, and the mixing temperature monitoring is set on the mixing main pipe. Furnace Fuel Control Adjusts the fuel supply to the furnace by comparing the difference between the mix header temperature and the set point. The adjustments are described as follows: [0003] When the monitored temperature of the mixing main pipe is lower than the set value, the fuel flow rate of the heating furnace is increased or the fuel pressure downstream of the regulating valve of the heating furnace is increased to increase the fuel supply of the heating fu...

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Problems solved by technology

[0007] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a fuel regulating system for heating furnaces, a fuel regulating method and a heating furnace to solve the problem that the upstream of the two furnace tubes cannot ensure uniform distribution and temperature changes after mixing Under certain circumstances, by adjusting the respective fuel supply, ensure that the material outlet temperature of each furnace is consistent, which means that the outlet temperature of each branch pipe is as consistent as possible, so that the temperature of a certain road is not too high, resulting in partial burning or local coking of the furnace tube, which can be stably controlled. The supply of fuel ensures the stable operation of the heating furnace, realizes automatic control and reduces labor load

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