Photocatalytic reactor and method for synergistic desulfurization of oxygen-enriched flue gas to hydrocarbon fuel

A photocatalytic reactor and photocatalytic reaction technology, applied in the field of flue gas purification, can solve the problems of high energy consumption and high cost, and achieve the effects of low energy consumption, low cost and improved processing efficiency

Active Publication Date: 2021-08-03
HUAZHONG UNIV OF SCI & TECH
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  • Description
  • Claims
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Problems solved by technology

Due to the use of flue gas circulation, SO in the flue gas of oxy-fuel combustion 2 Pollutants such as pollutants will be enriched, and the traditional wet desulfurization technology still has the disadvantages of high energy consumption and high cost

Method used

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  • Photocatalytic reactor and method for synergistic desulfurization of oxygen-enriched flue gas to hydrocarbon fuel

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0028] Such as figure 1 As shown, a photocatalytic reactor for synergistic desulfurization of oxygen-rich flue gas to hydrocarbon fuel, the photocatalytic reactor photoreactor is a three-chamber reactor, including the first reactor 1, the second reactor 2 and the third reaction A device 3 is provided with an air inlet 4 on the side of the first reactor, and the flue gas first enters the first r...

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Abstract

The invention belongs to the technical field related to flue gas purification, and specifically discloses a photocatalytic reactor and method for synergistic desulfurization of hydrocarbon fuels produced from oxygen-enriched flue gas. Wherein, the sulfur dioxide gas in the gas to be treated is converted into sulfite ions in the first reactor, between the first reactor and the second reactor, and between the second reactor and the third reactor are provided with ion The exchange channel is used to exchange the ions in the reactor with each other to maintain the charge balance and mass balance. The ion exchange membrane is arranged in the ion channel between the first reactor and the second reactor, and the sulfite ion enters through the ion exchange membrane. In the second reactor, the photocatalytic reaction is carried out in the second reactor to be oxidized to sulfate ion to realize desulfurization; the carbon dioxide gas in the gas to be treated enters the third reactor for photocatalytic reduction to hydrocarbons to realize carbon dioxide processing. Through the invention, the preparation of hydrocarbon fuel and desulfurization can be carried out simultaneously, and the processing efficiency is high.

Description

technical field [0001] The invention belongs to the technical field related to flue gas purification, and more specifically relates to a photocatalytic reactor and method for synergistic desulfurization of hydrocarbon fuels produced from oxygen-enriched flue gas. Background technique [0002] A large amount of CO is released during the utilization of coal 2 , greatly accelerating the process of global warming. Coal-fired power plants are my country's CO 2 The largest and most concentrated source of emissions. Among them, the oxygen-enriched combustion power plant uses the mixed gas composed of pure oxygen obtained from air separation and a part of boiler exhaust gas instead of air as the oxidant of coal combustion, which can make the CO in the flue gas formed by coal combustion 2 The content reaches more than 85%, which is a good CO 2 source. Due to the use of flue gas circulation, SO in the flue gas of oxy-fuel combustion 2 Pollutants such as pollutants will be enrich...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/86B01D53/75B01D53/50B01D53/62B01D53/78
CPCB01D53/007B01D53/504B01D53/8671B01D53/869B01D2257/504B01D2258/0283B01D2259/802Y02A50/20
Inventor 赵永椿汪钧逸熊卓张军营
Owner HUAZHONG UNIV OF SCI & TECH
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