Dry powder adsorbent uniform-mixing distribution test device and method
A distribution test and adsorbent technology, applied in separation methods, chemical instruments and methods, and dispersed particle separation, etc., can solve problems such as high investment costs, complex systems, and non-involved dry powder adsorbent homogeneous distribution detection test technology and devices , to achieve the effect of convenient use, high safety and simple structure
Pending Publication Date: 2021-04-02
SUZHOU XIRE ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD
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Problems solved by technology
This patent achieves precise control of the powder volume of each spray gun by providing each spray gun with a dry powder feeder and a flow control valve. However, the system is complicated and the investment cost is high, so it is difficult to popularize and apply it to large coal-fired power plant boilers.
[0007] In summary, the currently disclosed basic dry powder adsorbent spraying removes SO 3 None of the technology-related patents involve the homogeneous mixing and distribution detection test technology and device of dry powder adsorbent
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[0059] Such as figure 1 The shown dry powder adsorbent homogeneous distribution test system has been used for alkali dry powder spraying to remove SO 3 In the research and development of the device, calcium oxide dry powder with a particle size of about 325 mesh was used as the adsorbent in the test, and 20 air powder branch pipes were installed in the dry powder homogeneous distributor; the dust collector such as figure 2 , 3 As shown, 20 air powder inlet pipes and filter bags are set; the outer diameter of the air powder branch pipe and the air powder inlet pipe of the dust collector is consistent, both of which are 76mm; the inner diameter of the filter bag is consistent with the diameter of the air powder inlet pipe, and the length is 1200mm. The dust filtration efficiency of the dust with a diameter of 1 μm and above is ≥99%; the air velocity inside the dry powder homogeneous distributor is 7.5m / s, the feed rate of the adsorbent is 13.6kg / h, and the test time is 30 minu...
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Abstract
The invention relates to a dry powder adsorbent uniform-mixing distribution test device and method. The device comprises a dry powder feeding unit, a compressed air supply unit, a dry powder ejector,a dry powder uniform-mixing distributor, a dust remover and a fan, and an air powder branch pipe is arranged at an outlet of the dry powder uniform-mixing distributor; and the dust remover comprises afilter bag, and the air powder branch pipe communicates with the filter bag. The method comprises the steps of adjusting the rotating speed of the dry powder feeding unit, calibrating a rotating speed-powder feeding amount relational expression, emptying the filter bag, recording the weight of the filter bag, adjusting the rotating speed of the fan, enabling the air speed of the dry powder uniform-mixing distributor to reach a design value, starting the compressed air supply unit, enabling the adsorbent feeding amount to reach the design value for testing, recording the weight of the filter bag after testing is finished, and counting and analyzing the distribution uniformity of the adsorbent according to the weight of the filter bag and the weight of the air powder branch pipe adsorbent before and after the test. The test basis is provided for optimal design and engineering popularization and application of a technical device for removing SO3 by spraying a basic dry powder adsorbent,and the device is simple in structure, convenient to use and high in safety.
Description
technical field [0001] The invention relates to a dry powder adsorbent uniform mixing distribution test device and method. Background technique [0002] After the ultra-low emission transformation of coal-fired power plants, the tail facilities such as low-temperature economizer, wet desulfurization, and wet electrostatic precipitator can remove most of the SO in the flue gas 3 , but doesn't help to solve SO 3 It brings problems such as limited peak shaving depth of units, severe ammonium bisulfate blockage of air preheater and low and low temperature economizer. Adding base dry powder adsorbent to the inlet of SCR denitrification device to remove SO by spraying 3 The system helps to solve the above problems. [0003] The base dry powder adsorbent injection SO3 removal system belongs to the dry desulfurization technology, and the removal efficiency is directly related to the mixing effect of flue gas and adsorbent. Different from the calcium injection desulfurization tec...
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IPC IPC(8): B01D53/06B01D53/83B01D53/50
CPCB01D53/06B01D53/50B01D53/83B01D2257/302B01D2258/0283
Inventor 谢新华周健宋玉宝宋友亚李海斌高英雷虢德军赵玉水李明磊韦振祖黄飞
Owner SUZHOU XIRE ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD
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