Exhaust gas treatment device and exhaust gas treatment system
A waste gas treatment device and waste gas technology, applied in gas treatment, combustion product treatment, chemical/physical processes, etc., can solve the problems of inapplicable large-capacity waste gas treatment, etc., and achieve the effect of increasing contact time
Inactive Publication Date: 2015-10-07
MITSUBISHI HEAVY IND LTD
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Problems solved by technology
[0005] As a method for treating metallic mercury in exhaust gas, removal methods using adsorbents such as activated carbon or selenium filters are known, but special adsorption and removal devices are required, so it is not suitable for the treatment of large-capacity exhaust gases such as exhaust gases from power plants.
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Embodiment
[0049] An exhaust gas treatment system to which an exhaust gas treatment device according to an embodiment of the present invention is applied will be described with reference to the drawings.
[0050] In addition, because the configuration and Figure 8 The shown exhaust gas treatment system has the same configuration, so in this embodiment, the configuration of the exhaust gas treatment device will be described.
[0051] figure 1 It is a schematic diagram showing the exhaust gas treatment device of the embodiment, figure 2 is a perspective view of the vortex generating part, image 3 This is a view of the swirl flow generating member viewed from the axial direction.
[0052] in addition, figure 1 is composed of Figure 8 Since it is a part of the exhaust gas treatment system shown, the same symbols will be added to the same components as those of the existing ones, and repeated descriptions will be omitted.
[0053] Such as figure 1 As shown, the exhaust gas treatme...
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An air pollution control apparatus (10) according to an embodiment of the present invention has a denitration catalyst layer (13) that removes NOx in flue gas (12), and atomizes HCl into the flue gas (12) to oxidize Hg, and also includes a swirling-flow generating member (30A) that includes a swirling-flow generating-member body being partitioned to correspond to each passage of the denitration catalyst layer (13) and a plurality of swirling-flow generating vanes arranged on the partition inner walls to generate a turbulent flow, on an inlet (13a) side of the denitration catalyst layer (13). With this configuration, a laminar flow of the flue gas (12) in a flue gas duct (19) is changed to a swirling flow, thereby enabling to increase a contact time between the flue gas (12) and a denitration catalyst and to improve the oxidation reaction efficiency between Hg in the flue gas (12) and the denitration catalyst.
Description
technical field [0001] The present invention relates to an exhaust gas treatment device and an exhaust gas treatment system for treating exhaust gas discharged from a combustion device. Background technique [0002] Since waste gas discharged from a coal-fired boiler, which is a combustion device such as a thermal power station, contains highly toxic mercury, various studies have been made on systems for removing mercury in the waste gas. [0003] Generally, a coal-fired boiler is provided with a wet desulfurization device for removing sulfur components in exhaust gas. It is known that when the amount of chlorine (Cl) in the exhaust gas increases, the ratio of divalent metallic mercury (Hg) soluble in water to the flue gas treatment facility formed by adding a desulfurization device to such a boiler is known. Large, easy to capture mercury with the desulfurization device. [0004] Therefore, in recent years, the reduction of NO x The denitrification device, and the alkali...
Claims
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IPC IPC(8): B01D53/94B01D53/64B01J35/04F23J15/00
CPCB01D53/64B01D53/8631B01D2251/108B01D2255/102B01D2255/20723B01D2255/20738B01D2255/20746B01D2255/20753B01D2255/20769B01D2255/20776B01D2257/302B01D2257/602F23J15/003F23J2215/10F23J2215/60F23J2219/10F23M9/003
Inventor 佐藤敏浩坂田展康四条利久磨村上盛纪鹈饲展行野地胜己清泽正志
Owner MITSUBISHI HEAVY IND LTD