Control system for stable dual-fuel load switching of solid heat carrier furnace

A solid heat carrier and control system technology, applied in coke ovens, special forms of dry distillation, petroleum industry, etc., can solve the problem of changes in the calorific value of pyrolysis gas of pyrolysis products, switching control systems that cannot meet control requirements, and different types of auxiliary fuels OK, etc.

Pending Publication Date: 2021-07-20
BEIJING AEROSPACE PETROCHEM TECH & EQUIP ENG CORP LTD
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AI Technical Summary

Problems solved by technology

[0006] In the waste pyrolysis process, because the composition and calorific value of the waste change, the calorific value of the pyrolysis gas of the pyrolysis product changes, and the type of auxiliary fuel is uncertain. The conve

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  • Control system for stable dual-fuel load switching of solid heat carrier furnace

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Embodiment Construction

[0026] Such as figure 1 As shown, the control system for the steady switching of the dual-fuel load of the solid heat carrier furnace of the present invention includes a controller, an ever-burning lamp flowmeter connected to the controller, an ultrasonic flowmeter A, an ultrasonic flowmeter B, an ever-burning lamp pneumatic cut-off ball valve, a pneumatic Cut-off ball valve group A, pneumatic cut-off ball valve group B, pneumatic control valve A, pneumatic control valve B, pressure transmitter A, pressure transmitter B, online calorific value meter A, online calorific value meter B.

[0027] The burner is designed with an independent permanent lamp gas gun, auxiliary fuel gas gun and pyrolysis gas gun, which are connected to independent gas pipelines. The pilot lamp gas gun is connected to the pilot lamp flowmeter and the pilot lamp pneumatic cut-off ball valve in sequence through the pilot lamp pipeline; the auxiliary fuel gas gun of the burner is connected to the online cal...

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Abstract

The invention belongs to the technical field of garbage pyrolysis, and particularly relates to a control system for stable dual-fuel load switching of a solid heat carrier furnace. The control system is connected to the combustor through a fuel gas pipeline to achieve switching of double fuels. The heat value of the auxiliary fuel and the heat value of the pyrolysis gas are converted, in the process that the auxiliary fuel is switched into the pyrolysis gas, the flow of the auxiliary fuel is gradually reduced by adjusting the opening degree of an auxiliary fuel pneumatic adjusting valve, and meanwhile the flow of the corresponding converted pyrolysis gas is gradually increased by adjusting a pyrolysis gas pneumatic adjusting valve; and the same method is suitable for the process of switching the pyrolysis gas to the auxiliary fuel, so that the combustion heat value of the fuel entering the combustor is basically in a stable state, and the temperature in the solid heat carrier furnace is stable. The combustor is provided with three infrared & ultraviolet dual-mode flame detectors which are used for detecting the flame of the incandescent light, the flame of the auxiliary fuel and the flame of the pyrolysis gas, the reliability of flame detection is improved by adopting a two-out-of-three mode, and the stability of flame detection in the switching process is improved.

Description

technical field [0001] The invention belongs to the technical field of garbage pyrolysis, and in particular relates to a control system for stable switching of dual-fuel loads of a solid heat carrier furnace. Background technique [0002] Compared with large-scale landfills, incineration plants and other waste treatment facilities, the waste pyrolysis gasification technology has the advantages of no secondary pollution emissions and resource utilization. Its environmental and social impacts are small, which can weaken government transportation and land selection. The government's guidance is more efficient and convenient, and it can solve the problem of urban domestic waste disposal in a timely and thorough manner. Therefore, waste pyrolysis gasification technology is expected to become a new technical direction to replace waste incineration. [0003] The solid heat carrier furnace uses auxiliary fuel to heat the heat carrier, and then carries it to the pyrolysis unit throug...

Claims

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Application Information

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IPC IPC(8): C10B53/00
CPCC10B53/00
Inventor 刘天虎熊哲张彦军宋小飞刘建华杜闰萍丁建亮方子星
Owner BEIJING AEROSPACE PETROCHEM TECH & EQUIP ENG CORP LTD
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