Treatment system for removing benzenes in petrochemical industry waste gas

Abstract

The invention discloses a treatment system for removing benzenes in petrochemical industry waste gas. The system comprises a waste heat exchanger, a gas overheating protection device, a thermal type gas mass flow meter, a mixed gas flow control valve, a bag type dust collector, a tungsten coil surface activation-ozone oxidation treatment device, a smoke washing purifying tower, a draught fan and the like. According to the system, the unique surface activation property of ozone on the surfaces of some metal elementary substances is creatively utilized; when a tungsten metal coil is in an electrified incandescence state, ozone can rapidly release activated oxygen atoms on the surface of the tungsten metal coil, and a strong oxidation environment can be generated on the surface of tungsten metal; when molecules, containing C-C bonds with the conjugation effect, of benzenes and the like are in the strong oxidation environment, the conjugated C-C bonds of the molecules can be broken by the activated oxygen atoms, the molecules of benzenes can be decomposed into H2O, CO2 and other inorganic molecules finally under oxygenolysis, and thus the purpose of removing benzenes in waste gas is achieved.

Description

technical field [0001] The invention relates to a treatment system for removing benzene series in petrochemical industrial waste gas, which belongs to the field of waste gas treatment in environmental protection. Background technique [0002] Benzene is a general term for benzene and its derivatives. The benzene series in the broad sense includes all aromatic compounds, and the benzene series in the narrow sense refers to the benzene ring-containing compounds that have a certain distribution in the human production and living environment and cause harm to the human body, including BTEX. [0003] Human extraction of benzene series can be traced back to the 19th century. In 1825, British scientist Faraday (Faraday) used distillation to separate high-purity benzene from the pyrolysis products of fish oil and other similar substances, calling it "heavy carbon compound of hydrogen", and determined its basic physical properties and chemical components. Since then, substances su...

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Problems solved by technology

[0017] At present, the waste gas benzene series treatment methods commonly used in my country generally have disadvantages such as large initial investment, high operation and maintenance costs, and complicated technology, and its treatment effect is difficult to meet the increasingly stringent emission requirements.

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