CN212548850U

CN212548850U - Boiler tail gas filter equipment

Info

Publication number: CN212548850U
Application number: CN202021063109.7U
Authority: CN
Inventors: 王耀威; 黄科体; 杨振; 金柏祥
Original assignee: Hangzhou Fulida Thermal Power Co ltd
Current assignee: Hangzhou Fulida Thermal Power Co ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-02-19
Anticipated expiration: 2030-06-10

Abstract

The utility model relates to a boiler tail gas filter equipment belongs to boiler tail gas treatment facility's technical field, and it includes the filtering ponds, and the intercommunication has the pipeline between filtering ponds and the boiler, the filtering ponds is provided with the circulation subassembly, and the circulation subassembly includes circulating pipe and circulating pump, and the circulating pipe begins to extend to the top position of filtering ponds from the position that is close to the filtering ponds bottom, and the top fixedly connected with equipartition board of filtering ponds sets up a plurality of evenly distributed's equipartition hole on the equipartition board, and the equipartition board is located the below of circulating pipe top export, and the top intercommunication of filtering ponds has the tail gas export, the utility model discloses have the effectual effect of dust removal.

Description

Boiler tail gas filter equipment

Technical Field

The utility model belongs to the technical field of boiler tail gas treatment facility's technique and specifically relates to a boiler tail gas filter equipment is related to.

Background

The existing boiler is an energy conversion device, toThe energy input by the boiler is chemical energy and electric energy in the fuel, the boiler outputs steam, high-temperature water or organic heat carrier with certain heat energy, and the main components of waste gas generated after the fuel in the boiler is combusted are dust and SO₂Nitrogen oxides, etc., which pollute the air if the exhaust gas is directly discharged.

The existing Chinese patent with reference to publication No. CN203886371U discloses a furnace tail gas filtering device, which comprises a filtering tank, wherein a boiler is connected with the filtering tank through a pipeline, the pipeline outlet is positioned below a filtering net and positioned at the edge of the filtering tank, a filtered water inlet is arranged at the upper side section of the filtering tank, a filtered water outlet is arranged at the lower end of the filtering tank, an annular outer water tank is arranged on the side surface of the filtering tank, and a filtered tail gas outlet is arranged above the filtering tank.

The above prior art solutions have the following drawbacks: gas flows out from the pipeline export back, enters into the solution in the filter tank, then overflows from filtering the tail gas export promptly, and gas only filters through solution one deck in the filter tank, and is relatively poor to the effect of detaching of dust in the gas.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a boiler tail gas filter equipment, its advantage is: the dust removing effect is good.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a boiler tail gas filter equipment, includes the filtering ponds, and the intercommunication has the pipeline between filtering ponds and the boiler, the filtering ponds are provided with the circulation subassembly, and the circulation subassembly includes circulating pipe and circulating pump, and the circulating pipe begins to extend to the top position of filtering ponds from the position that is close to the filtering ponds bottom, and the top fixedly connected with equipartition board of filtering ponds sets up a plurality of evenly distributed's equipartition hole on the equipartition board, and the equipartition board is located the below of circulating pipe top export, and the top intercommunication of filtering ponds has the tail gas export.

By adopting the technical scheme, after tail gas enters the filter tank from the pipeline, the tail gas firstly enters liquid in the filter tank, dust and the like in the gas enter water, then the gas moves upwards to leave the liquid level in the filter tank, then the circulating pump is started, the circulating pump enables the liquid in the filter tank to flow upwards to the top of the circulating pipe along the circulating pipe, then the liquid is sprayed downwards from the outlet at the top of the circulating pipe, the upwards moving gas and the downwards sprayed liquid form countercurrent, so that the contact area between the gas and the liquid is further increased, the dust carried in the gas can be further transferred to the liquid, and the dust removal effect is improved; and the liquid in the filter tank can be recycled.

The utility model discloses further set up to: the end part of the circulating pipe close to the bottom of the filtering tank is fixedly connected with a filter screen.

By adopting the technical scheme, the filter screen has a filtering effect on the circulating pipe, and the blockage of the circulating pipe is avoided.

The utility model discloses further set up to: a buffer plate is arranged between the uniform distribution plate and the top of the filtering tank, a plurality of through holes which are uniformly distributed are formed in the buffer plate, and the buffer plate is located below an outlet at the top of the circulating pipe.

Through adopting above-mentioned technical scheme, the rivers at circulating pipe top go out the back, fall on the buffer board, the buffer board plays certain cushioning effect that blocks to it, when making rivers just fall on the buffer board, few water flows from the through-hole, most water is blockked and can not flow down by the buffer board, rivers evenly distributed back on the buffer board, with the area of contact grow of buffer board, rivers are from the faster outflow in the through-hole of more figures, thereby make the rivers that fall on the equipartition board more even.

The utility model discloses further set up to: the through holes and the uniformly distributed holes are arranged in a staggered manner in the vertical direction.

Through adopting above-mentioned technical scheme, the water that flows from the through-hole can directly drop on the equipartition board, then rivers flow the equipartition back on the equipartition board, just flow from the equipartition hole, further improved the even degree that water flows from the equipartition board.

The utility model discloses further set up to: and the two ends of the bottom of the filter tank are communicated with a liquid inlet pipe and a liquid outlet pipe.

Through adopting above-mentioned technical scheme, open the drain pipe, the water in the filter tank can flow out, opens the feed liquor pipe and closes the drain pipe, gets into water promptly in the filter tank, makes the change of filter tank water comparatively convenient.

The utility model discloses further set up to: the liquid inlet pipe is communicated with a water inlet pump, and the liquid outlet pipe is communicated with a water outlet pump.

Through adopting above-mentioned technical scheme, the intake pump is opened and the delivery pump is opened for in the filter tank, intake and play water go on simultaneously, when making liquid change in the filter tank, the sustainable filtration to tail gas that carries on, and the change that makes the filter tank water-logging comparatively convenient.

The utility model discloses further set up to: the end connection that the pipeline inserted in the filtering pond has the flaring portion, and the flaring portion is the flaring form downwards, and the bottom fixed connection of flaring portion has the horizontally dispersion board, has seted up even dispersion hole on the dispersion board.

Through adopting above-mentioned technical scheme, tail gas flows out the back from the pipeline, enters into flared part to scatter at flared part, then from the liquid that enters into in the filtering ponds of dispersion hole homodisperse, make tail gas can with the more even contact of liquid in the filtering ponds, improved the effect of detaching of dust in the tail gas.

The utility model discloses further set up to: the outside of filtering ponds is provided with outer water tank, and fixedly connected with from the top down is the guide board of spiral distribution between filtering ponds and the outer water tank, and the top intercommunication of outer water tank has the water inlet, and the bottom intercommunication of outer water tank has the delivery port.

Through adopting above-mentioned technical scheme, after the cooling water entered into outer water tank from the water inlet, it was spacing by the guide board, then from the top down walk around the outside in filtering pond and be spiral shape downstream, until flowing out from the delivery port, and the tail gas that the mouth of pipe flows upwards flows in filtering pond, and the cooling water forms against the current with tail gas for the refrigerated effect of tail gas is better, is favorable to improving thermal rate of recovery in to tail gas.

To sum up, the utility model discloses a beneficial technological effect does:

1. by arranging the circulating assembly, the dust removing effect is improved, and the liquid in the filter tank can be recycled;

2. by arranging the filter screen, the blockage of the circulating pipe is avoided;

3. through setting up flaring portion and dispersion board, the effect of detaching of dust in the tail gas has been improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a cross-sectional view of a filtration tank.

In the figure, 1, a boiler;

2. a filtration tank; 21. a pipeline; 211. a flared part; 212. a dispersion plate; 213. a dispersion hole; 22. a tail gas outlet; 23. a uniform distribution plate; 231. uniformly distributing holes; 24. a buffer plate; 241. a through hole; 25. a liquid inlet pipe; 251. a water inlet pump; 26. a liquid outlet pipe; 261. discharging the water pump;

3. a circulation component; 31. a circulation pipe; 311. a filter screen; 32. a circulation pump;

4. an outer water tank; 41. a guide plate; 42. a water inlet; 43. and (7) a water outlet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and fig. 2, for the utility model discloses a boiler tail gas filter equipment, including filtering ponds 2, the intercommunication has pipeline 21 between filtering ponds 2 and the boiler 1, filtering ponds 2's top intercommunication has tail gas outlet 22, contain liquid in filtering ponds 2, liquid can be water, also can be alkaline solution sodium hydroxide solution etc., filtering ponds 2 are provided with circulation subassembly 3, make the solution in filtering ponds 2 can follow filtering ponds 2's top and spray downwards, gaseous back in getting into filtering ponds 2 when pipeline 21, at first with the liquid contact in filtering ponds 2, then the rebound forms the advection with the liquid that sprays down and has further increased the area of contact between gaseous and the liquid, dust in the gas can further shift to in the liquid, the dust removal effect has been improved.

Referring to fig. 1 and 2, the circulation assembly 3 includes a circulation pipe 31 and a circulation pump 32, the circulation pipe 31 extends to the top position of the filtration tank 2 from a position close to the bottom of the filtration tank 2, the top of the filtration tank 2 is sequentially and fixedly connected with a buffer plate 24 and an even distribution plate 23 from top to bottom, the buffer plate 24 is located below the top outlet of the circulation pipe 31, a plurality of uniformly distributed through holes 241 are formed in the buffer plate 24, a plurality of uniformly distributed even distribution holes 231 are formed in the even distribution plate 23, the through holes 241 are vertically and alternately arranged with the even distribution holes 231, a filter screen 311 is fixedly connected to the end of the circulation pipe 31 close to the bottom of the filtration tank 2, an opening at the end of the circulation pipe 31 close to the bottom of the filtration tank 2 is vertically downward, and.

Referring to fig. 1 and 2, the two ends of the bottom of the filtering tank 2 are communicated with a liquid inlet pipe 25 and a liquid outlet pipe 26, the liquid inlet pipe 25 is communicated with a water inlet pump 251, and the liquid outlet pipe 26 is communicated with a water outlet pump 261.

Referring to fig. 1 and 2, the end of the pipe 21 inserted into the filtering tank 2 is connected with a flared part 211, the flared part 211 is flared downwards, the bottom of the flared part 211 is fixedly connected with a horizontal dispersion plate 212, the horizontal dispersion plate is close to the bottom of the filtering tank 2 and is located below the liquid level of the liquid in the filtering tank 2, and the dispersion plate 212 is provided with uniform dispersion holes 213, so that the contact area between the tail gas and the liquid in the filtering tank 2 is increased.

Referring to fig. 1 and 2, the outer water tank 4 is arranged outside the filtering tank 2, a guide plate 41 which is spirally distributed from top to bottom is fixedly connected between the filtering tank 2 and the outer water tank 4, the top of the outer water tank 4 is communicated with a water inlet 42, the bottom of the outer water tank 4 is communicated with a water outlet 43, cooling water flows in from the water inlet 42 and flows out from the water outlet 43, and heat in tail gas is recovered.

The implementation principle of the embodiment is as follows: the circulating pump 32 is started, the tail gas flows out from the pipeline 21, enters the flared part 211, is dispersed in the flared part 211, then enters the liquid in the filter tank 2 in a uniformly dispersed manner through the dispersion hole 213, the contact area between the tail gas and the liquid in the filter tank 2 is increased, dust and the like in the gas enter the water, then the gas moves upwards to leave the liquid level in the filter tank 2, the liquid in the filter tank 2 flows upwards to the top of the circulating pipe 31 along the circulating pipe 31 by the circulating pump 32, then flows downwards from the outlet at the top of the circulating pipe 31, the liquid firstly falls onto the buffer plate 24, is uniformly dropped onto the uniform distribution plate 23 after being dispersed on the buffer plate 24, is finally sprayed out from the uniform distribution holes 231 to form counter flow with the upwards moving tail gas, and finally the tail gas flows out upwards from the tail gas outlet 22, so that the contact area between the gas and the liquid is further increased, the dust carried in the gas can be further transferred into the liquid, and the dust removal effect is improved.

Meanwhile, after the cooling water enters the outer water tank 4 from the water inlet 42, the cooling water moves downwards along the guide plate 41 and spirally around the outside of the filter tank 2 until the cooling water flows out of the water outlet 43, the cooling water and the tail gas form a counter flow, and the cooled effect of the tail gas is better.

When the liquid in the filter tank 2 is replaced, the water inlet pump 251 and the water outlet pump 261 are opened, water inlet and water outlet are performed simultaneously in the filter tank 2, and the effect of synchronously filtering tail gas when the liquid is replaced is achieved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a boiler tail gas filter equipment, includes filtering ponds (2), and the intercommunication has pipeline (21), its characterized in that between filtering ponds (2) and boiler (1): filtering ponds (2) are provided with circulation subassembly (3), circulation subassembly (3) are including circulating pipe (31) and circulating pump (32), circulating pipe (31) begin to extend to the top position of filtering ponds (2) from the position that is close to filtering ponds (2) bottom, the top fixedly connected with equipartition board (23) of filtering ponds (2), equipartition board (23) are last to have seted up a plurality of evenly distributed's equipartition hole (231), equipartition board (23) are located the below of circulating pipe (31) top export, the top intercommunication of filtering ponds (2) has tail gas outlet (22).

2. The boiler tail gas filtering device according to claim 1, characterized in that: the end part of the circulating pipe (31) close to the bottom of the filtering tank (2) is fixedly connected with a filtering net (311).

3. The boiler tail gas filtering device according to claim 1, characterized in that: a buffer plate (24) is arranged between the uniform distribution plate (23) and the top of the filtering pool (2), a plurality of through holes (241) which are uniformly distributed are formed in the buffer plate (24), and the buffer plate (24) is positioned below the top outlet of the circulating pipe (31).

4. The boiler tail gas filtering device according to claim 3, characterized in that: the through holes (241) and the uniform distribution holes (231) are arranged in a staggered mode in the vertical direction.

5. The boiler tail gas filtering device according to claim 1, characterized in that: and the two ends of the bottom of the filter tank (2) are communicated with a liquid inlet pipe (25) and a liquid outlet pipe (26).

6. The boiler tail gas filtering device according to claim 5, characterized in that: the liquid inlet pipe (25) is communicated with a water inlet pump (251), and the liquid outlet pipe (26) is communicated with a water outlet pump (261).

7. The boiler tail gas filtering device according to claim 1, characterized in that: the end part of the pipeline (21) inserted into the filter tank (2) is connected with an expanding part (211), the expanding part (211) is downwards in an expanding shape, the bottom of the expanding part (211) is fixedly connected with a horizontal dispersion plate (212), and the dispersion plate (212) is provided with uniform dispersion holes (213).

8. The boiler tail gas filtering device according to claim 1, characterized in that: the outside of filtering ponds (2) is provided with outer water tank (4), fixedly connected with from the top down is guide board (41) that the spiral distributes between filtering ponds (2) and outer water tank (4), and the top intercommunication of outer water tank (4) has water inlet (42), and the bottom intercommunication of outer water tank (4) has delivery port (43).