Device and method for removing fine granules by coupling steam phase transition and turbulence agglomeration
A technology of fine particulate matter and vapor phase is applied in the field of removing ultrafine particulate matter in the flue gas of coal-fired boilers, which can solve the problems of high energy consumption and complex process, and achieve the effect of reducing resistance, obvious agglomeration effect and good effect.
Active Publication Date: 2017-08-18
HEBEI UNIV OF TECH
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Problems solved by technology
The pre-installed steam phase change chamber and pre-washing tower will make the process very complicated, and if you want to make the particles grow to the removable range under the simple steam phase change, you need to add steam yourself, which consumes a lot of steam and consumes too much energy. Big
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Embodiment 1
[0041] In this embodiment, a trapezoidal nozzle is respectively arranged on the wall surfaces on both sides of the device. The distance between the trapezoidal nozzle and the entrance accounts for 1 / 6 of the total length and is symmetrically distributed along the center line. The height of the trapezoidal nozzle accounts for 1 / 5 of the height of the device. The ratio of height to upper bottom is 1:10, and the ratio of height to lower bottom is 1:1 (a relatively balanced state can be achieved between the process resistance, the mixing effect of smoke and moist air, and the effect of vortex generation, that is, the resistance will Yes, but not very large and has a good mixing effect of flue gas and humid air and vortex generation. The purpose of spraying humid air is to mix it with flue gas to achieve a supersaturated state, and the mixing effect under this parameter is excellent) . There are three spoilers distributed inside the device, one is located on the center line, and th...
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The invention relates to a device and a method for removing fine granules by coupling steam phase transition and turbulence agglomeration. The device is characterized in that an inlet of the device is connected with an outlet of a desulfurizing tower; the wall surfaces of both sides of the device are respectively provided with a trapezoidal spray nozzle, the distance between the two trapezoidal spray nozzles is smaller than the height of the inlet, the length of each trapezoidal spray nozzle is equal to the width of the inlet, the distance between the geometric center of each trapezoidal spray nozzle and the inlet is equal to 1 / 6 of the total length of the device, and the two trapezoidal spray nozzles are symmetrically distributed along the centerline of the device; three spoiling parts are arranged in the device behind the trapezoidal spray nozzles in a isosceles triangle way, namely a vertex angle spoiling part and two base angle spoiling parts; vertex angle spoiling part is positioned at the centerline of the device, the distance between the geometric center of the top base angle spoiling part and the inlet is equal to 7 / 25 of the total length of the device, the two base angle spoiling parts are symmetrically distributed along the centerline of the device, and the distance between the geometric center of each base angle spoiling part and the inlet is equal to 3 / 5 of the total length of the device.
Description
technical field [0001] The invention belongs to the technical field of removing ultrafine particles in flue gas of coal-fired boilers, and in particular relates to a device and method for removing fine particles by coupling steam phase transition and turbulent flow agglomeration. Background technique [0002] Fine particles suspended in the air are highly harmful to human health. It has received more and more attention in recent years. The smaller the particle size, the stronger its diffusion effect in the atmosphere, and the less prone to sedimentation effect. At present, in order to reduce the emission of particulate matter, most coal-fired power plants have adopted relatively advanced dust removal equipment. The large particle size particles in the dusty flue gas can be almost completely removed by these dust removal equipment, but the small particle size particles The removal effect is not obvious. At present, the wet flue gas desulfurization process adopted by factor...
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IPC IPC(8): B01D49/00
CPCB01D49/00
Inventor 陈占秀杨历闵春华刘志勇李佳李阳
Owner HEBEI UNIV OF TECH