Automatic coke oven emission ignition control system and control method

Abstract

The invention discloses an automatic coke oven emission ignition control system and control method. The control system comprises an automatic emission device which is composed of a nitrogen source, an emission gas channel switch and a pneumatic air cylinder. When the pressure in a gas collecting pipe exceeds the preset upper pressure limit, nitrogen in the nitrogen source is convened to one gas inlet / outlet of the pneumatic air cylinder by controlling the emission gas channel switch, a flap valve is opened through the pneumatic air cylinder under the action of nitrogen pressure, and raw coal gas is emitted automatically. When the pressure of the gas collecting pipe is below the lower limit value, the nitrogen in the nitrogen source is convened to other gas inlet / outlet of the pneumatic air cylinder by controlling the emission gas channel switch, and the flap valve is closed. According to the automatic coke oven emission ignition control system and control method, the flap valve is opened and closed with the nitrogen as power, so that limiting to automatic emission due to insufficient electric energy of a reserve power source is eliminated. In addition, the automatic emission device is simple in structure and convenient to operate, so that the running stability of the whole automatic coke oven emission ignition control system is ensured.

Description

technical field [0001] The invention relates to the technical field of coking in the coking industry, in particular to an automatic ignition control system and control method for a coke oven. Background technique [0002] Raw coal gas is a flammable gas produced in the coking coal production process. Coke oven production has frequent periodicity and its pressure fluctuates. When the use of raw gas is low and the production of raw gas is at its peak, the pressure of the gas collecting pipe is unstable, or when the fan failure, sudden power failure, or gas dredging system failure cause the collection When the gas pipe pressure remains high and cannot be adjusted normally, measures must be taken to release the raw gas to avoid damage to the coke oven's raw gas export system and coke oven body due to excessive pressure. [0003] In the existing technology, in order to prevent the released raw gas from entering the atmosphere and causing environmental pollution, the coke oven au...

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Problems solved by technology

[0005] The embodiment of the present invention provides a coke oven automatic bleed ignition control system and control method to solve the problem that the coke oven bleed ignition system in the prior art uses a motor to control the bleed valve, and in special periods such as power outages, cannot complete normal At the same time, the failure rate of the motor is high, resulting in high maintenance costs and unstable operation

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