Desulfurization slurry waste heat recovery cooling system with ash removal structure

Abstract

The utility model discloses a desulfurization slurry waste heat recovery cooling system with an ash removal structure, which relates to the technical field of flue gas cooling and comprises a desulfurization tower, a flue gas inlet and a flue gas outlet, and the flue gas inlet is arranged on one side of the desulfurization tower. When flue gas enters a desulfurizing tower from a flue gas inlet, a filter screen can filter the flue gas, an electric push rod is started to drive a second triangular block to push, and meanwhile, a knocking rod can be driven to knock the filter screen, so that dust on the surface of the filter screen can fall into a collecting frame, and the dust removal effect is better when the desulfurization slurry waste heat recovery cooling system is used; when flue gas enters the desulfurization tower through the flue gas inlet, the slurry delivery pump is started to extract slurry in the slurry area, then the slurry can be sprayed out of the desulfurization tower through the spraying layer, the heat exchanger can exchange heat between the slurry and water, and then the heat pump unit is used for extracting heat in the heat exchanger and heating water in the heating water return pipeline or supplementing water. And desulfurization slurry waste heat recovery is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to flue gas cooling technical field, concretely is a kind of desulfurization slurry waste heat recovery cooling system with dust cleaning structure. BACKGROUND

[0002] Wet desulfurization is the most widely used in power plant at present, and the system is relatively stable, and the technology is relatively mature desulfurization process, desulfurization flue gas inlet temperature is generally 110-140 ℃, temperature needs to be adjusted before flue gas enters subsequent equipment, avoid higher temperature to cause damage to subsequent dust collection device, therefore generally through desulfurization slurry waste heat recovery cooling system is used.

[0003] But most of desulfurization slurry waste heat recovery cooling system when using, since flue gas contains not only higher temperature, while flue gas contains more dust, make after long time use, it is easy to cause the accumulation in the interior of desulfurization slurry waste heat recovery cooling system, to affect the use of desulfurization slurry waste heat recovery cooling system, in turn lead to the temperature of flue gas cannot be effectively reduced, lead to after long time use, it will cause damage to subsequent equipment. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of desulfurization slurry waste heat recovery cooling system with dust cleaning structure to solve the problem of not easy to clean ash of desulfurization slurry waste heat recovery cooling system proposed in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of desulfurization slurry waste heat recovery cooling system with dust cleaning structure, including desulfurization tower, flue gas inlet and flue gas outlet, the side of the desulfurization tower is provided with flue gas inlet, the side of the desulfurization tower away from flue gas inlet is provided with flue gas outlet, the inside of flue gas inlet is provided with dust cleaning mechanism extending to outside, the dust cleaning mechanism includes fixed frame, filter screen and mounting frame, the outside of flue gas inlet is provided with fixed frame, the inside of fixed frame is provided with filter screen extending to the inside of flue gas inlet and being symmetrically distributed, the side of the inside of fixed frame close to filter screen is provided with mounting frame.

[0006] Preferably, the top of the fixed frame is provided with symmetrically distributed electric push rod, the bottom of the electric push rod is provided with first triangular block extending to the inside of mounting frame.

[0007] Preferably, one end of the first triangular block is provided with second triangular block, one end of the second triangular block is provided with knocking rod extending to the outside of mounting frame.

[0008] Preferably, the knocking rod is welded with a spring between the mounting frame, the fixed frame bottom end is provided with a collection frame, the collection frame bottom end is provided with a sealing cover, and the sealing cover is provided with a clamping block extending to the inside of the collection frame on both sides.

[0009] Preferably, the desulfurization tower is provided with a slurry waste heat recovery mechanism on one side, the slurry waste heat recovery mechanism comprises a slurry zone, a filling port, a slurry delivery pump, a circulating slurry pipeline, a spraying layer, a heat exchange pipe, a heat exchanger, a heating return water pipeline, a water pump and a heat pump unit, the inside of the desulfurization tower is provided with the slurry zone at the bottom end, and the desulfurization tower is provided with the filling port at the bottom end close to the flue gas inlet.

[0010] Preferably, the desulfurization tower is provided with a slurry delivery pump on the side away from the filling port, the slurry delivery pump is provided with a circulating slurry pipeline extending to the inside of the desulfurization tower on one side, and the circulating slurry pipeline is provided with the spraying layer uniformly distributed at the bottom end.

[0011] Preferably, the circulating slurry pipeline is provided with the heat exchange pipe on one side, and the heat exchange pipe is provided with the heat exchanger between the circulating slurry pipeline.

[0012] Preferably, the heat exchange pipe is provided with the heating return water pipeline on one side, the heating return water pipeline is provided with the water pump on one side, and the heat exchange pipe is provided with the heat pump unit between the heating return water pipeline.

[0013] Compared with the prior art, the desulfurization slurry waste heat recovery cooling system with the ash removal structure has the advantages that when the flue gas enters the desulfurization tower from the flue gas inlet, the filter screen can filter the flue gas, the second triangular block can be pushed by the electric push rod, and the knocking rod can knock the filter screen, so that the dust on the surface of the filter screen falls into the inside of the collection frame, the ash removal effect of the desulfurization slurry waste heat recovery cooling system is good when the system is used, when the flue gas enters the inside of the desulfurization tower from the flue gas inlet, the slurry delivery pump can be started to extract the slurry in the slurry zone, then the slurry can be sprayed in the inside of the desulfurization tower through the spraying layer, the heat exchanger can exchange heat between the slurry and water, the heat pump unit can extract the heat in the inside of the heat exchanger, heat the water or supplement the water in the inside of the heating return water pipeline, and the desulfurization slurry waste heat recovery is realized.

[0014] 1. The desulfurization slurry waste heat recovery cooling system with the ash removal structure, when the flue gas enters the inside of the desulfurization tower from the flue gas air inlet, the filter screen can filter the flue gas, meanwhile, after long time use, dust is easy to adhere to the surface of the filter screen, the first triangular block can drive the second triangular block to push the knocking rod to knock the filter screen by starting the electric push rod, so that the dust on the surface of the filter screen falls into the collecting frame, then the sealing cover can drive the clamping block to separate from the collecting frame, so that the dust in the collecting frame can be treated, so that the desulfurization slurry waste heat recovery cooling system can have good ash removal effect on the dust in the flue gas when in use, so that the dust can be avoided from accumulating in the inside when cooling the flue gas;

[0015] 2. The desulfurization slurry waste heat recovery cooling system with the ash removal structure, when the desulfurization original flue gas of 110-140 DEG C enters the inside of the desulfurization tower from the flue gas air inlet, the slurry in the slurry area can be pumped by starting the slurry delivery pump, then the slurry can be sprayed in the inside of the desulfurization tower by the spraying layer, so that the flue gas can be sprayed with the slurry from top to bottom by the spraying layer, so that the heat exchanger can exchange heat between the slurry in the circulating slurry pipeline and water, so that the slurry can be reduced to 46-50 DEG C, then the heat in the heat exchanger can be extracted by the heat pump unit to heat the water in the heating return water pipeline or make up water, so that the desulfurization slurry waste heat recovery is realized, meanwhile, the desulfurization clean flue gas temperature is reduced, the system water supplement amount is reduced, so that the desulfurization slurry waste heat recovery cooling system can reduce the water consumption by the desulfurization slurry waste heat recovery. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the front view structure schematic diagram of the utility model;

[0017] Figure 2 It is the front view cut of the utility model;

[0018] Figure 3 It is the front view cut of the utility model installation frame;

[0019] Figure 4 It is the front view cut of the utility model clamping block.

[0020] In the drawing: 1, desulfurization tower; 2, flue gas air inlet; 3, flue gas outlet; 4, ash removal mechanism; 401, fixed frame; 402, filter screen; 403, installation frame; 404, electric push rod; 405, first triangular block; 406, second triangular block; 407, knocking rod; 408, spring; 409, collecting frame; 410, sealing cover; 411, clamping block; 5, slurry waste heat recovery mechanism; 501, slurry area; 502, filling port; 503, slurry delivery pump; 504, circulating slurry pipeline; 505, spraying layer; 506, heat exchange pipe; 507, heat exchanger; 508, heating return water pipeline; 509, water pump; 510, heat pump unit. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figures 1-4 It can be known that the utility model provides a kind of technical scheme: a desulfurization slurry waste heat recovery cooling system with dust cleaning structure, including desulfurization tower 1, flue gas inlet 2 and flue gas outlet 3, the side of desulfurization tower 1 is provided with flue gas inlet 2, the side of desulfurization tower 1 away from flue gas inlet 2 is provided with flue gas outlet 3, flue gas inlet 2 is provided with dust cleaning mechanism 4 extending to outside inside, dust cleaning mechanism 4 includes fixed frame 401, filter screen 402 and installation frame 403, the outside of flue gas inlet 2 is provided with fixed frame 401, fixed frame 401 is provided with filter screen 402 extending to the inside of flue gas inlet 2 and being symmetrically distributed inside, the side of fixed frame 401 inside close to filter screen 402 is provided with installation frame 403, fixed frame 401 top end is equipped with the electric push rod 404 of symmetric distribution, the bottom of electric push rod 404 is provided with the first triangular block 405 extending to the inside of installation frame 403, one end of first triangular block 405 is provided with second triangular block 406, one end of second triangular block 406 is provided with knock rod 407 extending to the outside of installation frame 403, spring 408 is welded and connected between knock rod 407 and installation frame 403, fixed frame 401 bottom end is provided with collection frame 409, the bottom of collection frame 409 is provided with sealing cover 410, the both sides of sealing cover 410 are provided with clamping block 411 extending to the inside of collection frame 409.

[0023] Please refer to Figures 1-4It can be known that when the flue gas enters the inside of the desulfurization tower 1 from the flue gas inlet 2, the filter screen 402 can filter the flue gas, and after long time use, the surface of the filter screen 402 is easy to adhere to more dust, the electric push rod 404 can be started to drive the first triangular block 405 to move, the first triangular block 405 can push the second triangular block 406 when moving, the second triangular block 406 can extrude the spring 408 when moving, and the second triangular block 406 can drive the knocking rod 407 to move when moving, so that the knocking rod 407 can knock the filter screen 402 when moving, thereby causing vibration on the surface of the filter screen 402, so that the dust on the surface of the filter screen 402 falls into the collecting frame 409, so that the dust can be collected, then the sealing cover 410 is pulled to drive the clamping block 411 to separate from the collecting frame 409 when moving, so that the dust in the collecting frame 409 can be treated, so that the desulfurization slurry waste heat recovery cooling system can have a good dust removal effect on the dust in the flue gas when in use, so that the dust can be avoided from being accumulated in the inside when cooling the flue gas.

[0024] Referring to Figure 1 and Figure 2 It can be known that the desulfurization tower 1 is provided with a slurry waste heat recovery mechanism 5 on one side, the slurry waste heat recovery mechanism 5 comprises a slurry area 501, a filling port 502, a slurry delivery pump 503, a circulating slurry pipeline 504, a spraying layer 505, a heat exchange pipe 506, a heat exchanger 507, a heating return water pipeline 508, a water pump 509 and a heat pump unit 510, the inside of the desulfurization tower 1 is provided with the slurry area 501 at the bottom end, the desulfurization tower 1 is provided with the filling port 502 at the bottom end near the flue gas inlet 2, the desulfurization tower 1 is provided with the slurry delivery pump 503 on the side away from the filling port 502, the slurry delivery pump 503 is provided with the circulating slurry pipeline 504 extending into the inside of the desulfurization tower 1 on one side, the bottom end of the circulating slurry pipeline 504 is provided with the spraying layer 505 distributed uniformly, the circulating slurry pipeline 504 is provided with the heat exchange pipe 506 on one side, the heat exchange pipe 506 and the circulating slurry pipeline 504 are provided with the heat exchanger 507, the heat exchange pipe 506 is provided with the heating return water pipeline 508 on one side, the heating return water pipeline 508 is provided with the water pump 509 on one side, and the heat exchange pipe 506 and the heating return water pipeline 508 are provided with the heat pump unit 510.

[0025] Referring to Figure 1 and Figure 2It can be known that when the desulfurized raw flue gas at 110-140 DEG C enters the inside of the desulfurization tower 1 through the flue gas inlet 2, the slurry conveying pump 503 is started to extract the slurry in the slurry zone 501, and then the slurry can be sprayed in the inside of the desulfurization tower 1 through the spraying layer 505, and the spraying layer 505 can spray the slurry from top to bottom to the flue gas, so that the heat exchanger 507 can exchange heat between the slurry in the circulating slurry pipeline 504 and water, so that the slurry can be reduced to 46-50 DEG C, and the heat in the heat exchanger 507 is extracted by the heat pump unit 510 to heat the water in the heating return water pipeline 508 or the make-up water, so as to realize the desulfurization slurry waste heat recovery, and the desulfurized flue gas temperature is reduced, and the system make-up water is reduced, so that the desulfurization slurry waste heat recovery cooling system can reduce the water consumption through the desulfurization slurry waste heat recovery.

[0026] In summary, when the flue gas enters the inside of the desulfurization tower 1 through the flue gas inlet 2, the filter screen 402 can filter the flue gas, and after a long time use, the surface of the filter screen 402 is easy to adhere to a lot of dust, and the first triangular block 405 can be moved by starting the electric push rod 404 to push the second triangular block 406 when moving, so that the second triangular block 406 can drive the knocking rod 407 to knock the filter screen 402 when moving, and then the dust on the surface of the filter screen 402 can fall into the collecting frame 409, and then the sealing cover 410 can drive the clamping block 411 to separate from the collecting frame 409, so as to treat the dust in the collecting frame 409, so that the desulfurization slurry waste heat recovery cooling system can have a good dust removal effect when used, so that the dust can be avoided to accumulate in the inside when the flue gas is cooled, and the contents not described in detail in the description belong to the prior art known to those skilled in the art.

[0027] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A desulfurization slurry waste heat recovery cooling system with dust cleaning structure, comprising a desulfurization tower (1), a flue gas inlet (2) and a flue gas outlet (3), characterized in that: One side of the desulfurization tower (1) is provided with a flue gas inlet (2), and the side of the desulfurization tower (1) away from the flue gas inlet (2) is provided with a flue gas outlet (3), the inside of the flue gas inlet (2) is provided with a dust cleaning mechanism (4) extending to the outside, the dust cleaning mechanism (4) comprises a fixed frame (401), a filter screen (402) and a mounting frame (403), the outside of the flue gas inlet (2) is provided with a fixed frame (401), the inside of the fixed frame (401) is provided with a filter screen (402) extending to the inside of the flue gas inlet (2) in a symmetrical distribution, and the inside of the fixed frame (401) is provided with a mounting frame (403) close to one side of the filter screen (402).

2. The desulfurization slurry waste heat recovery cooling system with ash removal structure according to claim 1, characterized in that: The top end of the fixed frame (401) is provided with symmetrically distributed electric push rods (404), and the bottom end of the electric push rod (404) is provided with a first triangular block (405) extending into the inside of the mounting frame (403).

3. The desulfurization slurry waste heat recovery cooling system with ash removal structure according to claim 2, characterized in that: One end of the first triangular block (405) is provided with a second triangular block (406), and one end of the second triangular block (406) is provided with a knocking rod (407) extending to the outside of the mounting frame (403).

4. The desulfurization slurry waste heat recovery cooling system with ash removal structure according to claim 3, characterized in that: The spring (408) is welded between the knocking rod (407) and the mounting frame (403), the bottom end of the fixed frame (401) is provided with a collection frame (409), the bottom end of the collection frame (409) is provided with a sealing cover (410), and the two sides of the sealing cover (410) are provided with clamping blocks (411) extending into the inside of the collection frame (409).

5. The desulfurization slurry waste heat recovery cooling system with ash removal structure according to claim 1, characterized in that: One side of the desulfurization tower (1) is provided with a slurry waste heat recovery mechanism (5), the slurry waste heat recovery mechanism (5) comprises a slurry area (501), a filling port (502), a slurry delivery pump (503), a circulating slurry pipeline (504), a spray layer (505), a heat exchange pipe (506), a heat exchanger (507), a heating return water pipeline (508), a water pump (509) and a heat pump unit (510), the inside of the desulfurization tower (1) is provided with a slurry area (501) at the bottom end, and the bottom end of the desulfurization tower (1) close to the flue gas inlet (2) is provided with a filling port (502).

6. The desulfurization slurry waste heat recovery cooling system with ash removal structure according to claim 5, characterized in that: The side of the desulfurization tower (1) away from the filling port (502) is provided with a slurry delivery pump (503), one side of the slurry delivery pump (503) is provided with a circulating slurry pipeline (504) extending into the inside of the desulfurization tower (1), and the bottom end of the circulating slurry pipeline (504) is provided with evenly distributed spray layers (505).

7. The desulfurization slurry waste heat recovery cooling system with ash removal structure according to claim 6, characterized in that: One side of the circulating slurry pipeline (504) is provided with a heat exchange pipe (506), and the heat exchange pipe (506) is provided with a heat exchanger (507) between the circulating slurry pipeline (504).

8. The desulfurization slurry waste heat recovery cooling system with ash removal structure according to claim 7, characterized in that: One side of the heat exchange pipe (506) is provided with a heating return water pipeline (508), one side of the heating return water pipeline (508) is provided with a water pump (509), and the heat exchange pipe (506) is provided with a heat pump unit (510) between the heat exchange pipe (506) and the heating return water pipeline (508).

Images