CN210522012U - Centrifugal condensation defogging and whitening device - Google Patents
Centrifugal condensation defogging and whitening device Download PDFInfo
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- CN210522012U CN210522012U CN201921097502.5U CN201921097502U CN210522012U CN 210522012 U CN210522012 U CN 210522012U CN 201921097502 U CN201921097502 U CN 201921097502U CN 210522012 U CN210522012 U CN 210522012U
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- flue gas
- centrifugal condensation
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Abstract
A centrifugal condensation de-fogging and de-whitening device is vertically arranged in a desulfurizing tower and comprises a water inlet pipe, a cylinder body, a water outlet pipe and a sealing plate. The novel vortex pump is characterized in that the number of the cylinder bodies is multiple, and each cylinder body comprises a water-cooling shell, a fan-shaped cyclone blade, a spiral blade, a conical contraction section and a wire mesh packing layer. The fan-shaped rotational flow blades, the helical blades, the conical contraction sections and the wire mesh packing layers are sequentially arranged in the water cooling shell from bottom to top. The utility model discloses a centrifugal condensation removes fog and disappears white device for wet flue gas desulfurization removes fog and disappears white, the conventional defroster of the device fungible to improve defogging efficiency, reduce the flue gas water content simultaneously, reach the effect that weakens white feather phenomenon. The device needs a small floor area, is convenient to install and convenient to reform, and meets the requirements of limited reforming site and short reforming time of a desulfurization project.
Description
Technical Field
The utility model relates to an environmental protection technology field particularly, relates to a centrifugal condensation defogging white device that disappears.
Background
At present, in order to reduce the damage of acid rain caused by sulfur-containing flue gas to the environment, the flue gas of boilers and submerged arc furnaces of power plants, steel plants and the like which use sulfur-containing fuel is required to be subjected to sulfur treatment; most of the desulfurization systems adopt a limestone gypsum wet desulfurization process, so that the desulfurization efficiency is high, and the operation cost is low; the desulfurized flue gas is low-temperature high-humidity flue gas, still carries part of unreacted and reacted material dust, acid mist, aerosol, heavy metal and organic matters, and although all desulfurization systems are provided with demisters, only a part of the desulfurized flue gas is removed of large fog drops containing the pollutants, the discharged flue gas is still in a saturated state and still carries the substances, and the other pollution of gypsum rain is caused.
Meanwhile, the wet-method desulfurized flue gas has large moisture content, the temperature of the flue gas is reduced in the process of mixing and diffusing with the atmosphere in the discharging process, water in the flue gas is separated out, white fog, commonly called as smoke plume, is formed around a chimney, and the problem of the smoke plume is required to be treated by the relevant policy of the state at present. In order to solve the above problems, the prior art mainly sets a flue gas temperature rising heat exchanger between the desulfurizing tower and the chimney, and solves the problem of 'smoke plume' generated by condensation of water vapor in flue gas by raising the temperature of flue gas, but the effect is not good, mainly because: (1) in order to avoid the condensation of water vapor in the flue gas, the temperature of the flue gas needs to be greatly increased, and the heat load of the flue gas heating heat exchanger is huge; (2) the heating load restriction, flue gas intensification heat exchanger is bulky, and current device is mostly original device transformation project, and usable space is limited, can't satisfy actual need. (3) The temperature rise of the flue gas can only solve the appearance problem, namely visible white fog is eliminated, and the water vapor carried in the discharged flue gas is not reduced, so that the emission reduction is not realized substantially.
SUMMERY OF THE UTILITY MODEL
The above-mentioned not enough to prior art exists, the utility model discloses the problem that solves is that current defroster defogging efficiency is not enough, produces gypsum feather phenomenon easily.
In order to solve the technical problem, the utility model discloses a following technical scheme: the utility model provides a centrifugal condensation defogging white device that disappears, the device is vertical to be set up in the desulfurizing tower, includes inlet tube, defogging device module, outlet pipe. The defogging device module has a plurality ofly, the defogging device module contains water-cooling casing, fan-shaped whirl blade, helical blade, toper shrink section, silk screen packing layer. The fan-shaped rotational flow blades, the helical blades, the conical contraction sections and the wire mesh packing layers are sequentially arranged in the water cooling shell from bottom to top.
Furthermore, the water-cooling shell is a hollow sealed cavity and comprises a lower water inlet and an upper water outlet, and the built-in circulating liquid is cold water. The outer wall of the shell is in a regular hexagon shape, the inner wall of the shell is in a circular shape, and the inner diameter of the inner wall is 350-400 mm. The water-cooling shell is made of polytetrafluoroethylene.
Furthermore, the blade inclination angle of the fan-shaped rotational flow blades is 45 degrees, the number of the blades is 8, and the blades are fixed at the bottom of the water cooling shell.
Further, helical blade is single helical blade, and the helical pitch is 400-500 mm, and spiral internal diameter 100mm, spiral external diameter are 350-400 mm, helical blade external diameter sets up the water conservancy diversion slot, the tight welding of water conservancy diversion slot and water-cooling casing inner wall, helical blade thickness is 1-2 mm, and the material is polytetrafluoroethylene.
Furthermore, the cone angle of the conical contraction section is 10 degrees to 20 degrees, the thickness is 1 mm to 2mm, fine small holes are uniformly distributed, the opening rate is more than 50 percent, and the small holes can be one of round, triangle and square.
Further, the material of the silk screen filler layer is one of the following: 2205 duplex stainless steel, 2507 duplex stainless steel and polytetrafluoroethylene.
Furthermore, the water inlet pipes of the plurality of demisting device modules are connected with the water inlet and outlet pipe branch pipes in the tower in parallel at the water outlet pipe, the branch pipes are arranged at equal intervals, the branch pipes are connected with the water inlet and outlet main pipe in parallel, a water pump is arranged outside the tower to provide power, and a cooler outside the tower cools the circulating water.
Furthermore, a plurality of demisting device modules are arranged into a honeycomb shape, and a gap between the demisting device modules and the shell of the desulfurizing tower is sealed by a sealing plate, so that the flue gas is prevented from escaping without demisting.
The utility model discloses a theory of operation:
when carrying the saturated wet flue gas of droplet from bottom to top through the device, the air current is striking with fan-shaped whirl blade and helical blade, the liquid drop is caught by the blade and forms gas-liquid separation in the flue gas, simultaneously by blade guided air current spiral rising, under the effect of radial centrifugal force, the droplet is caught by defogging device module inner wall, the heat in the flue gas is taken away to the water-cooling casing simultaneously, the temperature reduces, supersaturated steam condensation is appeared the water smoke, simultaneously by catching, the toper shrink section is further caught the droplet through the effect of increasing centrifugal force, at last in packing layer silk screen department, under capillary phenomenon and liquid surface tension, accomplish the seizure to tiny droplet in the flue gas.
The utility model has the advantages that:
the utility model has the advantages of small land occupation, convenient installation and convenient reconstruction, and meets the requirements of limited reconstruction site and short reconstruction time of the desulfurization project; meanwhile, the smoke emission white feather problem of the chimney is relieved.
Drawings
FIG. 1 is a schematic view of the vertical installation of the present invention in a desulfurization tower;
FIG. 2 is a top view of the installation of the present invention in a desulfurization tower;
FIG. 3 is a sectional view of the module structure of the defogging device of the present invention;
fig. 4 is a top view of the fan-shaped swirl vane of the present invention.
In the figure: 1, a water inlet pipe; 2, a demisting device module; 3, discharging a water pipe; 4, sealing a plate; 5, a desulfurizing tower; 21 a water inlet; 22 water-cooling the shell; 23 fan-shaped swirl vanes; 24 helical blades; 25 a tapered convergent section; 26 a silk screen packing layer; 27 water outlet; 51, a desulfurizing tower shell; 52 uppermost spray level.
Detailed Description
The following detailed description of the present invention will be made in conjunction with the accompanying drawings and specific embodiments.
As shown in fig. 1, 2, 3 and 4, a centrifugal condensation de-misting and de-whitening device is vertically arranged at a position 3m above the central line of the uppermost spray layer 52 in a desulfurizing tower 5 and is 2m away from the lower edge of a flue gas outlet of the desulfurizing tower; comprises a water inlet pipe 1, a demisting device module 2, a water outlet pipe 3 and a sealing plate 4. The number of the demisting device modules 2 is multiple, and each demisting device module comprises a water inlet 21, a water-cooling shell 22, a fan-shaped swirl vane 23, a helical vane 24, a conical contraction section 25, a wire mesh packing layer 26 and a water outlet 27; the fan-shaped swirl blades 23, the helical blades 24, the conical contraction section 25 and the wire mesh packing layer 26 are sequentially arranged in the water-cooling shell 22 from bottom to top.
In practical application, the water-cooled shell 22 is a hollow sealed cavity and comprises a lower water inlet 21 and an upper water outlet 27, and the built-in circulating liquid is cold water. The outer wall of the shell is in a regular hexagon shape, the inner wall of the shell is in a circular shape, and the inner diameter of the inner wall is 350-400 mm; the water-cooling shell is made of polytetrafluoroethylene.
In practical application, the blade inclination angle of the fan-shaped swirl blades 23 is 45 degrees, and the number of the blades is 8, and the blades are fixed at the bottom of the water-cooling shell.
In practical application, helical blade 24 is single helical blade, and the helical pitch is 400-500 mm, and spiral internal diameter 100mm, spiral external diameter are 350-400 mm, the helical blade external diameter sets up the water conservancy diversion slot, the tight welding of water conservancy diversion slot and water-cooling shell inner wall, helical blade thickness is 1-2 mm, and the material is polytetrafluoroethylene.
In practical application, the cone angle of the conical contraction section 25 is 10-20 degrees, the thickness is 1-2 mm, fine small holes are uniformly distributed, the opening rate is more than 50%, and the small holes can be one of round, triangular and square.
In practical application, the material of the mesh packing layer 26 is one of the following: 2205 duplex stainless steel, 2507 duplex stainless steel and polytetrafluoroethylene.
In practical application, a plurality of defogging device modules 2 inlet tubes and outlet pipes are connected in parallel to water inlet and outlet pipe branch pipes in the tower, the branch pipes are arranged at equal intervals and connected in parallel to a water inlet and outlet main pipe, a water pump is arranged outside the tower to provide power, and a cooler outside the tower cools circulating water.
In practical application, a plurality of demister modules 2 are arranged in a honeycomb shape, and the gap between the demister modules and the desulfurizing tower shell 51 is sealed by a sealing plate 4, so that the flue gas is prevented from escaping without demisting.
When saturated wet flue gas carrying fog drops passes through the fan-shaped cyclone blades 23 from bottom to top, the fog drops in the flue gas impact the cyclone blades and are collected by the blades, and the flue gas generates upward cyclone along with the uniform distribution and guide action of the blades distributed uniformly on the circumference and airflow, so that gas-liquid separation is realized.
The upward flue gas of whirl flow direction passes through helical blade 24, and the flue gas keeps the whirl state for a period of time, and the droplet in the whirl flue gas is got rid of on the water-cooling casing inner wall under the centrifugal force effect, further realizes gas-liquid separation. The outer side of the spiral blade is provided with a flow guide groove, and the purpose of the flow guide groove is to prevent the ascending airflow from forming secondary entrainment on the falling liquid.
When the flue gas passes through the helical blades, normal temperature or chilled water is adopted in the water-cooled shell, the inner wall of the water-cooled shell 22 is contacted with the flue gas, the flue gas exchanges heat with the shell, the temperature of the flue gas is reduced, water vapor carried in the flue gas is in a supersaturated state, the water vapor is condensed into water drops, the water drops are captured by the inner wall of the water-cooled shell under the action of centrifugal force, and the capacity of carrying fog drops and water vapor by the flue gas is reduced;
when the flue gas during through toper shrink section 25, the radius of rotation of whirl flue gas reduces, and under the unchangeable circumstances of linear velocity, centrifugal action strengthens, promotes the diffusion of fog drop to centrum inner wall in the flue gas more, and toper shrink section is last step to have a plurality of apertures, and the fog drop that is caught flows to the space between toper shrink section and the water-cooling casing because centrifugal action passes through the aperture, has avoided forming the secondary of liquid drop because of the conic section flue gas velocity of flow is very fast smuggleing secretly.
When the flue gas enters the wire mesh packing layer 26, the fog drops with smaller particle sizes in the flue gas collide with the wire mesh and are captured by the wire mesh under the capillary action and the liquid surface tension at the narrow gap of the wire mesh, under the condition of continuous capture, the liquid drops condense and grow, and when the gravity is greater than the airflow lift force and the surface tension, the liquid drops fall, so that the removal efficiency of the fog drops is improved.
As mentioned above, most of the fog drops are captured under the actions of impacting, centrifuging, cooling and condensing, and silk screen, so as to achieve the aim of demisting. And meanwhile, the moisture content of the flue gas is reduced due to the reduction of the temperature of the flue gas, so that the difference between the exhaust temperature of the chimney and the ambient temperature is reduced, and the aim of reducing the white feather phenomenon is fulfilled.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the present invention is to provide a person skilled in the art with the ability to understand the contents of the present invention and implement the same, and not to limit the scope of the present invention.
Claims (8)
1. The utility model provides a centrifugal condensation defogging white device that disappears which characterized in that: the centrifugal condensation defogging and whitening device is vertically arranged above the center line of the uppermost spraying layer (52) in the desulfurizing tower (5), and comprises a water inlet pipe (1), a defogging device module (2), a water outlet pipe (3) and a sealing plate (4); defogging device module (2) have a plurality ofly, defogging device module contains water inlet (21), water-cooling casing (22), fan-shaped whirl blade (23), helical blade (24), toper shrink section (25), silk screen packing layer (26), delivery port (27), install from making progress in proper order down fan-shaped whirl blade (23), helical blade (24), toper shrink section (25), silk screen packing layer (26) in water-cooling casing (22).
2. A centrifugal condensation de-misting and de-whitening apparatus as claimed in claim 1, wherein: the water-cooling shell (22) is a hollow sealed cavity and comprises a lower water inlet (21) and an upper water outlet (27), and the built-in circulating liquid is cold water or normal-temperature water; the outer wall of the shell is in a regular hexagon shape, the inner wall of the shell is in a circular shape, and the inner diameter of the inner wall is 350-400 mm; the water-cooling shell is made of polytetrafluoroethylene.
3. A centrifugal condensation de-misting and de-whitening apparatus as claimed in claim 1, wherein: the blade inclination angle of the fan-shaped rotational flow blades (23) is 45 degrees, the number of the blades is 8, and the blades are fixed at the bottom of the water-cooling shell.
4. A centrifugal condensation de-misting and de-whitening apparatus as claimed in claim 1, wherein: helical blade (24) are single helical blade, and the helical pitch is 400-500 mm, and spiral internal diameter 100mm, spiral external diameter are 350-400 mm, the helical blade external diameter sets up the water conservancy diversion slot, the tight welding of water conservancy diversion slot and water-cooling shell inner wall, helical blade thickness is 1-2 mm, and the material is polytetrafluoroethylene.
5. A centrifugal condensation de-misting and de-whitening apparatus as claimed in claim 1, wherein: the cone angle of the conical contraction section (25) is 10-20 degrees, the thickness is 1-2 mm, fine small holes are uniformly distributed, the opening rate is more than 50 percent, and the small holes can be one of round, triangle and square.
6. A centrifugal condensation de-misting and de-whitening apparatus as claimed in claim 1, wherein: the material of the silk screen packing layer (26) is one of the following materials: 2205 duplex stainless steel, 2507 duplex stainless steel and polytetrafluoroethylene.
7. A centrifugal condensation de-misting and de-whitening apparatus as claimed in claim 1, wherein: the inlet tube of a plurality of defogging device modules (2) is connected to the water inlet and outlet pipe branch tube in the tower for parallel with the water pipe, the branch tube is arranged at equal intervals, and is connected in parallel to the water inlet and outlet main tube, and the tower is externally provided with a water pump for providing power, and the cooler outside the tower cools down the circulating water.
8. A centrifugal condensation de-misting and de-whitening apparatus according to claim 1 or 7, wherein: the plurality of demister modules (2) are arranged in a honeycomb shape, and gaps between the plurality of demister modules and the desulfurizing tower shell (51) are sealed by sealing plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921097502.5U CN210522012U (en) | 2019-07-13 | 2019-07-13 | Centrifugal condensation defogging and whitening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921097502.5U CN210522012U (en) | 2019-07-13 | 2019-07-13 | Centrifugal condensation defogging and whitening device |
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| Publication Number | Publication Date |
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| CN210522012U true CN210522012U (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921097502.5U Expired - Fee Related CN210522012U (en) | 2019-07-13 | 2019-07-13 | Centrifugal condensation defogging and whitening device |
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| CN (1) | CN210522012U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112354291A (en) * | 2020-11-17 | 2021-02-12 | 庄伙金 | Industrial waste gas high-temperature purification equipment |
| CN112892167A (en) * | 2021-01-27 | 2021-06-04 | 山东保蓝环保工程有限公司 | A tail gas purification takes off white system for bonderizing industry degree of depth desorption acid mist |
-
2019
- 2019-07-13 CN CN201921097502.5U patent/CN210522012U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112354291A (en) * | 2020-11-17 | 2021-02-12 | 庄伙金 | Industrial waste gas high-temperature purification equipment |
| CN112892167A (en) * | 2021-01-27 | 2021-06-04 | 山东保蓝环保工程有限公司 | A tail gas purification takes off white system for bonderizing industry degree of depth desorption acid mist |
| CN112892167B (en) * | 2021-01-27 | 2022-09-27 | 山东保蓝环保工程有限公司 | A tail gas purification takes off white system for bonderizing industry degree of depth desorption acid mist |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200515 Termination date: 20210713 |
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| CF01 | Termination of patent right due to non-payment of annual fee |