Device and method for removing fine particles by coupling steam phase change and turbulent flow agglomeration
A technology of fine particles and steam phase, which is applied in the field of removing ultra-fine particles in the flue gas of coal-fired boilers. It can solve the problems of complex process and high energy consumption, and achieve obvious agglomeration effect, reduce resistance and reduce resistance.
Active Publication Date: 2022-05-13
HEBEI UNIV OF TECH
View PDF14 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
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
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
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...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a device and method for coupling steam phase change and turbulent agglomeration to remove fine particles, which is characterized in that the inlet of the device is connected to the outlet of a desulfurization tower, and a trapezoidal nozzle is arranged on the walls on both sides of the device. The distance between them is less than the height of the entrance, and the length of the two trapezoidal nozzles is equal to the width of the entrance, the distance between the geometric center of the trapezoidal nozzles and the entrance accounts for 1 / 6 of the total length of the device, and the two trapezoidal nozzles are symmetrically distributed along the centerline of the device; Three spoilers are arranged in an isosceles triangle inside the device at the rear of the trapezoidal nozzle, which are one top corner spoiler and two bottom corner spoilers. The top corner spoiler is located on the center line of the device, and the top corner spoiler The distance from the geometric center of the part to the entrance accounts for 7 / 25 of the total length of the device. The two bottom corner spoilers are symmetrically distributed along the center line of the device. The distance from the geometric center of the bottom corner spoiler to the entrance accounts for 3 of the total length of the device. / 5.
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...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
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