A Simultaneous On-Line Activation and Injection Method of Mercury Removal Adsorbent
An adsorbent and mercury removal technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of waste of adsorbent, large fluctuation of mercury concentration, and increased cost of mercury removal, so as to reduce dosage and improve utilization. The effect of efficiency
Active Publication Date: 2018-11-02
HUAZHONG UNIV OF SCI & TECH
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[0005] However, this mercury removal method also has certain defects. During the mercury removal process, the adsorbent stays in the flue gas for only a few seconds, and then it is captured by the dust removal device, and its adsorption is far from reaching saturation. The active component of the layer is the main body participating in the reaction, which will lead to an extremely low utilization rate of the active component in the inner layer of the adsorbent
In addition, the load of the power plant, the quality of coal into the furnace, and the combustion conditions are variable, resulting in large fluctuations in the concentration of mercury in the flue gas. However, the content of active components of the adsorbent prepared by chemical solution impregnation is usually fixed, which cannot adapt to the mercury concentration. Frequent fluctuations in concentration lead to a large waste of adsorbents and greatly increase the cost of mercury removal
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[0039] 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.
[0040] figure 1 It is a schematic structural diagram of the spraying device involved in the method for simultaneous on-line activation and spraying of the mercury removal adsorbent according to the embodiment of the present invention. Such as figure 1 As shown, the device includes a spraying mechanism and an online activation mechanism arranged on the side of the spraying mechanism and communi...
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The invention discloses a method for simultaneously activating and jetting demercuration adsorbent online, which is used for online activating and jetting of a mercury adsorbent by a device capable of simultaneously activating and jetting a demercuration adsorbent online. The device comprises a jet mechanism for jetting a mercury adsorbent, an online activation mechanism which is arranged on the side of the jet mechanism and is communicated with the jet mechanism, and a mercury concentration online monitor (11) which is used for monitoring the mercury concentration in flue gas, wherein according to the monitored mercury concentration, an adjusting damper (4) is dynamically adjusted, and an adjusting valve (9) on the online activation mechanism is dynamically adjusted, so that the adsorbent is activated online, and further the flue gas is demercurated. By adopting the method, the mercury adsorbent is activated online in real time, frequent fluctuation of mercury concentration is adaptive, and the utilization efficiency of the mercury adsorbent and active ingredients can be greatly improved, the dosage of adsorbent is reduced, and the demercuration cost is greatly reduced.
Description
technical field [0001] The invention belongs to the technical field of mercury control in coal-burning flue gas, and in particular relates to a method capable of simultaneously activating and injecting a mercury-removing adsorbent online. Background technique [0002] Mercury is a kind of nerve poison, which is highly cumulative and irreversible, and poses a great threat to human health. Coal-fired power plants are one of the most important sources of anthropogenic mercury pollution. With the continuous improvement of environmental protection requirements, it is of great significance to explore efficient, economical and environmentally friendly mercury control technologies. [0003] In the prior art, mercury removal devices are usually used to remove mercury in flue gas by using high-efficiency adsorption materials. The current main research focuses on two aspects: mercury removal adsorption materials and mercury removal devices. The research on mercury removal adsorption ...
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IPC IPC(8): B01D53/06
CPCB01D53/06B01D2257/602B01D2259/40083
Inventor 赵永椿杨建平朱彬彬张军营郑楚光
Owner HUAZHONG UNIV OF SCI & TECH