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Explosion-proof monitoring control method and system for low-temperature plasma organic waste gas treatment

A low-temperature plasma, organic waste gas technology, applied in separation methods, gas treatment, chemical instruments and methods, etc., can solve the problem of short-term and long-term simultaneous prevention and control of explosion risks, and achieve the effect of reducing explosion risks.

Active Publication Date: 2020-10-09
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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Problems solved by technology

[0005] In view of the deficiencies of the above-mentioned prior art, the present invention provides an explosion-proof monitoring and control method for low-temperature plasma organic waste gas treatment, which solves the technical problem that the prior art cannot simultaneously prevent and control the explosion risk in the short-term and long-term

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  • Explosion-proof monitoring control method and system for low-temperature plasma organic waste gas treatment
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  • Explosion-proof monitoring control method and system for low-temperature plasma organic waste gas treatment

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example 1

[0038] Example 1: Although the current gas temperature T is within the safe operating range, the total hydrocarbon concentration C of the gas has reached the lower limit of the explosive concentration, and the explosion condition is not met at present, but the temperature will continue to rise due to the change of the dielectric constant of the electrode blocking medium, then in In the near future, once the temperature exceeds the safe operating range, an explosion will occur immediately. In the present invention, when the gas total hydrocarbon concentration C has not yet reached the lower limit of the explosive concentration, but there is a risk, a corresponding anti-explosion control strategy will be adopted.

example 2

[0039] Example 2: Although the current gas total hydrocarbon concentration C is in the safe range (such as below 5% of the lower limit of the explosive concentration), the current gas temperature T exceeds the safe operating range, and the current explosion conditions are not satisfied. If it is not correct at this time, the gas temperature T will rise If the gas total hydrocarbon concentration C suddenly rises rapidly, and it is difficult to quickly reduce it, once the lower limit of the explosive concentration is reached, the explosion will occur immediately. In the present invention, when the gas temperature T exceeds the safe range, no matter whether the total hydrocarbon concentration C of the gas exceeds the limit or not, the shutdown and maintenance treatment is performed to eliminate the cause of the increase of the gas temperature T.

[0040] According to the risk level of different explosion safety hazards, implement corresponding explosion-proof control strategies: ...

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Abstract

The invention relates to an explosion-proof monitoring control method and system for low-temperature plasma organic waste gas treatment. The technical problem that in the prior art, short-term and long-term simultaneous prevention and control cannot be conducted on explosion risks is solved. The method comprises respectively obtaining the total hydrocarbon concentration C and the gas temperature Tof the gas in a low-temperature plasma reactor through a total hydrocarbon sensor and a temperature sensor, by a controller, carrying out explosion-proof monitoring control according to the two dimensions of the gas total hydrocarbon concentration C and the gas temperature T, and when the gas total hydrocarbon concentration C and the gas temperature T do not exceed the limit, implementing a continuous production control strategy, and when the gas total hydrocarbon concentration C or the gas temperature T exceeds the limit, judging that the potential safety hazard of combustion explosion exists, implementing a fire-proof and explosion-proof regulation and control strategy, and when the gas temperature T exceeds the limit, controlling the low-temperature plasma reactor to stop and sending out an overhaul instruction.

Description

technical field [0001] The invention relates to the technical field of low-temperature plasma organic waste gas treatment, in particular to a method and system for controlling the explosion-proof monitoring process of low-temperature plasma waste gas treatment. Background technique [0002] Low-temperature plasma technology is a new technology for waste gas treatment developed in recent years. Its working principle is to use high-voltage electrodes to discharge and breakdown the gas to generate plasma. Plasma is the fourth substance discovered by humans after gas, liquid and solid. The form is composed of a large number of high-energy charged particles and neutral particles, and it is generally electrically neutral, but it has strong chemical activity. These active substances decompose pollutant molecules in a very short time to achieve the purpose of degrading pollutants. Although the temperature of electrons is high during the discharge process, the temperature of heavy p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/32B01D53/44B01D53/34G01D21/02G01D18/00
CPCB01D53/32B01D53/44B01D53/346G01D21/02G01D18/00B01D2259/818
Inventor 梅昌艮
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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