CN211358140U - Tail gas discharge device of ash melting machine - Google Patents
Tail gas discharge device of ash melting machine Download PDFInfo
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- CN211358140U CN211358140U CN201921368730.1U CN201921368730U CN211358140U CN 211358140 U CN211358140 U CN 211358140U CN 201921368730 U CN201921368730 U CN 201921368730U CN 211358140 U CN211358140 U CN 211358140U
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Abstract
The utility model relates to a tail gas discharging device of an ash melting machine, which comprises a first exhaust cylinder, a washing tower, an induced draft fan and a second exhaust cylinder, wherein the first exhaust cylinder is covered on a tail gas outlet of the ash melting machine, a first induced draft pipe is connected between the upper part of the first exhaust cylinder and the lower part of the washing tower, a second induced draft pipe is connected between the upper part of the washing tower and an air suction opening of the induced draft fan, and an air outlet of the induced draft fan is connected with the second exhaust cylinder; the scrubbing tower includes packing layer, the first mechanism that sprays, backwash pump, recovery pond and rabbling mechanism, and the first mechanism that sprays sets up in the top of packing layer, and the recovery pond is located the bottom of scrubbing tower, and the water inlet and the recovery pond of backwash pump are connected, and the first delivery port and the elevated tank of backwash pump are connected, and the first water inlet that sprays the mechanism is connected with the second delivery port of delivery pipe and backwash pump respectively, and the bottom of recovery pond is equipped with row's sand mouth. Adopt the utility model discloses, can effective processing tail gas, the clean effectual of tail gas, simple structure moreover, energy reuse reduces the energy consumption.
Description
Technical Field
The utility model relates to a tail gas treatment technical field, more specifically say, relate to a tail gas discharging equipment of change ash machine.
Background
Lime milk is obtained in a lime slaker, the lime milk needs to be digested by quicklime and water (lime slaker), a large amount of reaction heat is released in the reaction process, the added quicklime and water have certain temperatures, and a large amount of steam and fine particles Ca (OH) are generated in the reaction process2Dust is discharged into the air if Ca (OH) is carried2The tail gas of the dust is directly discharged into the atmosphere, which not only affects the health of operators, but also causes dust pollution to the surrounding environment.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that a tail gas discharging device of lime slaking machine is provided, can the effective processing tail gas, the clean effectual of tail gas, simple structure moreover, energy reuse reduces the energy consumption.
In order to solve the technical problem, the utility model provides a tail gas discharging device of ash melting machine, it includes first exhaust cylinder, scrubbing tower, draught fan and second aiutage, first exhaust cylinder covers in sealed way on the tail gas export of ash melting machine, be connected with first induced air pipe between the upper portion of first exhaust cylinder and the lower part of scrubbing tower, be equipped with first ooff valve on the first induced air pipe, be connected with the second induced air pipe between the upper portion of scrubbing tower and the inlet scoop of draught fan, the air outlet of draught fan with the second aiutage is connected; the washing tower comprises a packing layer, a first spraying mechanism, a reflux pump and a recovery tank provided with a liquid level meter, the packing layer is arranged in the washing tower and comprises an upper sieve plate, a packing and a lower sieve plate, the packing is filled between the upper sieve plate and the lower sieve plate, the first spraying mechanism is arranged above the packing layer, the recovery tank is positioned at the bottom of the washing tower, a water inlet of the reflux pump is connected with the recovery tank, a first water outlet of the reflux pump is connected with an elevated tank used for storing water for dissolving ash in the ash dissolving machine, a water inlet of the first spraying mechanism is respectively connected with a water supply pipe and a second water outlet of the reflux pump, a second switch valve is arranged between the second water outlet of the reflux pump and the water inlet of the first spraying mechanism, and a stirring mechanism used for stirring the recovery tank is arranged in the washing tower, the bottom of the recovery tank is provided with a sand discharge port, and the sand discharge port is provided with a sand discharge valve.
As the utility model discloses preferred scheme, the top of first exhaust cylinder is equipped with discharge valve, be equipped with the second in the first exhaust cylinder and spray the mechanism, the second sprays the water inlet and the water piping connection of mechanism, be equipped with the water conservancy diversion lid in the first exhaust cylinder, the water conservancy diversion lid sets up directly over the tail gas outlet.
As the utility model discloses preferred scheme, the highest position of tail gas export is higher than the lowest position of first exhaust section of thick bamboo, the tail gas export with form the aqua storage tank between the first exhaust section of thick bamboo, the bottom of aqua storage tank is equipped with the outlet.
As the utility model discloses preferred scheme, the upper portion of aqua storage tank is equipped with the overflow pipe, the high position of overflow pipe is less than the highest position of tail gas export, the overflow pipe is connected between aqua storage tank and the elevated tank that is used for saving the ash removal water.
As the preferred scheme of the utility model, the mesh aperture of sieve is greater than down the mesh aperture of sieve.
As the preferred scheme of the utility model, the packing is Raschig ring packing, and the diameter is 30mm ~ 40 mm.
As the utility model discloses preferred scheme, rabbling mechanism includes driving motor, (mixing) shaft and stirring rake, driving motor with the sealed setting in top of scrubbing tower, the (mixing) shaft with driving motor's power take off end connects, the (mixing) shaft runs through the packing layer, the stirring rake sets up the lower part of (mixing) shaft just is located in the recovery pond.
As the preferred scheme of the utility model, the middle part of packing layer is equipped with and is used for passing the axle sleeve of (mixing) shaft, the axle sleeve pass through the connecting rod with the interior wall connection of scrubbing tower.
As the preferred proposal of the utility model, the stirring shaft is respectively sealed with the upper sieve plate and the lower sieve plate through the packing of the sealing filler.
As the utility model discloses preferred scheme, the water inlet of backwash pump with be equipped with cyclone between the recovery pond, cyclone with be equipped with the third ooff valve between the recovery pond.
Implement the utility model discloses a tail gas discharging device of ash melting machine compares with prior art, has following beneficial effect:
when the washing tower works, the induced draft fan is started, tail gas enters the washing tower through the suction force of the induced draft fan, the tail gas flows upwards from the bottom of the washing tower and penetrates through the packing layer, spray water sprayed by the first spraying mechanism flows into the packing layer from the upper sieve plate, the tail gas is fully contacted with the spray water on the surface of the packing, after the tail gas and the spray water are absorbed, cooled and washed on the surface of the packing, water vapor is condensed, the volume is reduced, negative pressure is formed inside the washing tower, the tail gas discharged from a tail gas outlet is guided into the washing tower, and the tail gas purified from the washing tower enters the second exhaust pipe through the induced draft fan and is discharged into the atmosphere; when the liquid level meter detects that the liquid level of the recovery tank exceeds a preset value, the reflux pump is started, washing water with a certain temperature in the recovery tank can be sent to a high-level tank of the ash melting machine through the reflux pump to be used as ash melting water, and when the temperature is low in winter, the second switch valve is started, and part of the washing water is used as a water source of the first spraying mechanism in a self-circulation mode; in addition, when the sand discharge valve is openedThe bottom of the recovery tank is stirred by a stirring mechanism to avoid Ca (OH)2、CaCO3When solid particles are deposited and agglomerated, the smooth discharge of the solid particles is ensured, and the phenomenon that the solid particles cannot be discharged from a sand discharge port is avoided; the utility model discloses can the effective processing tail gas, the clean effectual of tail gas, simple structure moreover, energy reuse reduces the energy consumption.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
FIG. 1 is a schematic structural diagram of an exhaust emission device of an ash melting machine provided by the present invention;
wherein, 1 is a first exhaust cylinder; 2 is a washing tower; 3 is a draught fan; 4 is a second exhaust cylinder; 5 is a tail gas outlet; 6 is a first induced draft pipe; 61 is a first switch valve; 7 is a second induced draft pipe; 8 is a head tank; 9 is a water supply pipe; 11 is an exhaust valve; 12 is a second spraying mechanism; 13 is a flow guide cover; 14 is a water storage tank; 15 is a water outlet; 16 is an overflow pipe; 21 is a filler layer; 211 is an upper sieve plate; 212 is a lower sieve plate; 22 is a first spraying mechanism; 23 is a reflux pump; 24 is a recovery tank; 231 is a second switch valve; 25 is a sand discharge port; 251, a sand discharge valve; 26 is a driving motor; 27 is a stirring shaft; 28 is a stirring paddle; 29 is a shaft sleeve; 291 is a copper sleeve; 292 is a connecting rod; 20 is a cyclone sand separator; reference numeral 201 denotes a third on/off valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, in a preferred embodiment of the present invention, an exhaust emission device of an ash melting machine includes a first exhaust cylinder 1, a washing tower 2, an induced draft fan 3 and a second exhaust cylinder 4, wherein the first exhaust cylinder 1 is hermetically covered on an exhaust outlet 5 of the ash melting machine, a first induced draft pipe 6 is connected between an upper portion of the first exhaust cylinder 1 and a lower portion of the washing tower 2, a first switch valve 61 is disposed on the first induced draft pipe 6, a second induced draft pipe 7 is connected between an upper portion of the washing tower 2 and an air suction port of the induced draft fan 3, and an air outlet of the induced draft fan 3 is connected with the second exhaust cylinder 4; the washing tower 2 comprises a packing layer 21, a first spraying mechanism 22, a reflux pump 23 and a recovery pool 24 provided with a liquid level meter, the packing layer 21 is arranged in the washing tower 2, the packing layer 21 comprises an upper sieve plate 211, packing and a lower sieve plate 212, the packing is filled between the upper sieve plate 211 and the lower sieve plate 212, the first spraying mechanism 22 is arranged above the packing layer 21, a plurality of spiral nozzles are arranged in the first spraying mechanism 22, the blockage can be reduced to the maximum degree by adopting the spiral nozzles, the distribution range is wide, and the maximum flow of water on a pipeline with a given size is achieved; the recovery tank 24 is located at the bottom of the washing tower 2, the bottom of the recovery tank 24 is in an inverted cone shape, the water inlet of the reflux pump 23 is connected with the recovery tank 24, the first water outlet of the reflux pump 23 is connected with an overhead tank 8 used for storing water for ash melting in the ash melting machine, the water inlet of the first spraying mechanism 22 is respectively connected with a water supply pipe 9 and the second water outlet of the reflux pump 23, a second switch valve 231 is arranged between the second water outlet of the reflux pump 23 and the water inlet of the first spraying mechanism 22, a stirring mechanism used for stirring the recovery tank 24 is arranged in the washing tower 2, a sand discharge port 25 is arranged at the bottom of the recovery tank 24, a sand discharge valve 251 is arranged on the sand discharge port 25, the stirring mechanism comprises a driving motor 26, a stirring shaft 27 and a stirring paddle 28, the driving motor 26 is hermetically arranged with the top of the washing tower 2, preferably, a water seal tank is arranged between the top of the washing tower 2 and the driving motor 26 for sealing so as to ensure the sealing performance of the washing tower 2, the stirring shaft 27 is connected with the power output end of the driving motor 26, the stirring shaft 27 penetrates through the packing layer 21, and the stirring paddle 28 is arranged at the lower part of the stirring shaft 27 and is positioned in the recovery tank 24; wherein, draught fan 3 during operation, first ooff valve 61 is normally open state, and sand discharge valve 251 is normally closed state, and sand discharge valve 251 just opens when scrubbing tower 2 needs the discharge solid particle.
When the washing tower works, the draught fan 3 is started, tail gas enters the washing tower 2 through the suction force of the draught fan 3, the tail gas flows upwards from the bottom of the washing tower 2 and penetrates through the packing layer 21, spray water sprayed out of the first spraying mechanism 22 flows into the packing layer 21 from the upper sieve plate 211, the tail gas is fully contacted with the spray water on the surface of the packing, the tail gas and the spray water are absorbed, cooled and washed on the surface of the packing, water vapor is condensed, the volume is reduced, negative pressure is formed inside the washing tower 2, the tail gas discharged from the tail gas outlet 5 is guided into the washing tower 2, and the tail gas purified from the washing tower 2 enters the second exhaust pipe 4 through the draught fan 3 and is discharged to the atmosphere side by side; furthermore, when the liquid level of the recovery tank 24 detected by the liquid level meter exceeds a preset value, the reflux pump 23 is started, the washing water with a certain temperature in the recovery tank 24 can be sent to the high-level tank 8 of the ash melting machine through the reflux pump 23 to be used as the ash melting water, and when the temperature is low in winter, the second switch valve 231 is started, and part of the washing water is used as the water source of the first spraying mechanism 22 in a self-circulation manner, and when the liquid level of the recovery tank 24 detected by the liquid level meter exceeds the preset value, the reflux pump 23 is turned off; in addition, when the sand discharge valve 251 is opened, the bottom of the recovery tank 24 is stirred by the stirring mechanism to avoid Ca (OH)2、CaCO3The solid particles are deposited and agglomerated, so that the solid particles are discharged smoothly, and the phenomenon that the solid particles cannot be discharged from the sand discharge valve 251 is avoided; the utility model discloses can the effective processing tail gas, the clean effectual of tail gas, simple structure moreover, energy reuse reduces the energy consumption.
Exemplarily, an exhaust valve 11 is arranged at the top of the first exhaust cylinder 1, a second spraying mechanism 12 is arranged in the first exhaust cylinder 1, a water inlet of the second spraying mechanism 12 is connected with a water supply pipe 9, a diversion cover 13 is arranged in the first exhaust cylinder 1, the diversion cover 13 is preferably of a conical structure, the diversion effect is improved, the diversion cover 13 is arranged right above the tail gas outlet 5, when the induced draft fan 3 or the washing tower 2 is overhauled (namely, the induced draft fan 3 or the washing tower 2 does not work), the exhaust valve 11 and the second spraying mechanism 12 are opened to treat tail gas, washing water is effectively prevented from entering the ash dissolving machine through the diversion cover 13 to influence the operation of the ash dissolving machine, and the collection of the washing water is facilitated; wherein the second spraying mechanism 12 comprises a first spraying layer, a second spraying layer and a third spraying layer which are arranged from top to bottom, so that the tail gas treatment effect is ensured.
Illustratively, the highest position of the tail gas outlet 5 is higher than the lowest position of the first exhaust tube 1, a water storage tank 14 is formed between the tail gas outlet 5 and the first exhaust tube 1, and a water discharge port 15 is arranged at the bottom of the water storage tank 14 and can discharge washing water into a recovery tank for collection; an overflow pipe 16 is arranged at the upper part of the water storage tank 14, the height position of the overflow pipe 16 is lower than the highest position of the tail gas outlet 5, the overflow pipe 16 is connected between the water storage tank 14 and a high-level tank 8 used for storing water for ash melting in the ash melting machine, and when the washing water in the water storage tank 14 after heat exchange with the tail gas is excessive, the washing water overflows to the high-level tank 8 through the overflow pipe 16 to be used as the ash melting water.
Because lower sieve 212 belongs to steam area ash milk dust and concentrates washing district, then the mesh aperture of lower sieve 212 is greater than the mesh aperture of upper sieve 211, in order to increase gas-liquid heat transfer efficiency, the mesh aperture of lower sieve 212 sets up to 20mm, and the mesh of lower sieve 212 arranges with equilateral 40 mm's equilateral triangle shape, and the mesh aperture of upper sieve 211 sets up to 10mm, and the mesh of upper sieve 211 arranges with equilateral 15 mm's equilateral triangle shape.
Illustratively, the packing is Raschig ring packing, the diameter of the packing is 30-40 mm, the Raschig ring packing has high aperture ratio, large gap, large flux and small resistance, so that gas and liquid in the washing tower 2 can freely pass through the packing, the distribution of the gas and the liquid in the packing layer 21 is good, and particularly, the inner surface of the Raschig ring packing is easily wetted by the liquid, so that the inner surface is fully utilized, and the packing layer 21 not only has high passing capacity and low pressure drop, but also has high mass transfer separation efficiency of the washing tower 2.
Illustratively, the middle part of the packing layer 21 is provided with a shaft sleeve 29 for passing through the stirring shaft 27, the shaft sleeve 29 can prevent the washing tower 2 from vibrating and packing collapsing to damage the rotating shaft, the shaft sleeve 29 is connected with the inner wall of the washing tower 2 through a connecting rod 292, preferably, the middle part of the outer wall of the shaft sleeve 29 is fixedly provided with a copper sleeve 291, the connecting rod 292 is connected between the copper sleeve 291 and the inner wall of the washing tower 2 in a cross structure, and the connecting rod 292 plays a role in absorbing vibration so as to reduce the shaking of the shaft sleeve 29.
Illustratively, the stirring shaft 27 is sealed with the upper sieve plate 211 and the lower sieve plate 212 respectively through sealing packing, so as to prevent tail gas from entering the shaft sleeve 29, and solid particles are deposited and agglomerated in the shaft sleeve 29 to affect the operation of the stirring shaft 27.
Exemplarily, a cyclone separator 20 is arranged between a water inlet of the reflux pump 23 and the recovery tank 24, a third on-off valve 201 is arranged between the cyclone separator 20 and the recovery tank 24, the third on-off valve 201 and the reflux pump 23 are synchronously opened and closed, washing water removes solid particles through the cyclone separator 20 and then enters the reflux pump 23, and the reflux pump 23 can be ensured to stably operate for a long time, wherein materials discharged from a sand outlet and a sand discharge port 25 of the cyclone separator 20 are purified and filter-pressed.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.
Claims (10)
1. The tail gas discharge device of the ash melting machine is characterized by comprising a first gas discharge cylinder, a washing tower, an induced draft fan and a second gas discharge cylinder, wherein the first gas discharge cylinder is hermetically covered on a tail gas outlet of the ash melting machine, a first induced draft pipe is connected between the upper part of the first gas discharge cylinder and the lower part of the washing tower, a first switch valve is arranged on the first induced draft pipe, a second induced draft pipe is connected between the upper part of the washing tower and an air suction port of the induced draft fan, and an air outlet of the induced draft fan is connected with the second gas discharge cylinder; the washing tower comprises a packing layer, a first spraying mechanism, a reflux pump and a recovery tank provided with a liquid level meter, the packing layer is arranged in the washing tower and comprises an upper sieve plate, a packing and a lower sieve plate, the packing is filled between the upper sieve plate and the lower sieve plate, the first spraying mechanism is arranged above the packing layer, the recovery tank is positioned at the bottom of the washing tower, a water inlet of the reflux pump is connected with the recovery tank, a first water outlet of the reflux pump is connected with an elevated tank used for storing water for dissolving ash in the ash dissolving machine, a water inlet of the first spraying mechanism is respectively connected with a water supply pipe and a second water outlet of the reflux pump, a second switch valve is arranged between the second water outlet of the reflux pump and the water inlet of the first spraying mechanism, and a stirring mechanism used for stirring the recovery tank is arranged in the washing tower, the bottom of the recovery tank is provided with a sand discharge port, and the sand discharge port is provided with a sand discharge valve.
2. The tail gas discharging device of an ash hoist according to claim 1, wherein the top of the first gas discharging cylinder is provided with a gas discharging valve, the first gas discharging cylinder is provided with a second spraying mechanism therein, a water inlet of the second spraying mechanism is connected with a water supply pipe, the first gas discharging cylinder is provided with a flow guiding cover therein, and the flow guiding cover is disposed right above the tail gas outlet.
3. The tail gas discharging device of an ash hoist according to claim 2, wherein the highest position of the tail gas outlet is higher than the lowest position of the first gas discharging cylinder, a water storage tank is formed between the tail gas outlet and the first gas discharging cylinder, and a water discharging port is formed at the bottom of the water storage tank.
4. The exhaust gas discharge device of an ash dissolving machine according to claim 3, wherein an overflow pipe is provided at an upper portion of the water storage tank, a height position of the overflow pipe is lower than a highest position of the exhaust gas outlet, and the overflow pipe is connected between the water storage tank and an elevated tank for storing water for dissolving ash in the ash dissolving machine.
5. The tail gas discharge device of an ash hoist as claimed in claim 1, wherein the mesh opening size of the lower sieve plate is larger than the mesh opening size of the upper sieve plate.
6. The tail gas discharge device of the ash hoist as claimed in claim 1, wherein the packing is Raschig ring packing with a diameter of 30mm to 40 mm.
7. The tail gas discharge device of the ash hoist according to claim 1, wherein the stirring mechanism comprises a driving motor, a stirring shaft and a stirring paddle, the driving motor is hermetically arranged on the top of the washing tower, the stirring shaft is connected with the power output end of the driving motor, the stirring shaft penetrates through the packing layer, and the stirring paddle is arranged on the lower portion of the stirring shaft and is located in the recovery tank.
8. The tail gas discharging device of the ash hoist as claimed in claim 7, wherein a shaft sleeve for passing through the stirring shaft is provided in the middle of the packing layer, and the shaft sleeve is connected with the inner wall of the scrubber via a connecting rod.
9. The tail gas discharging device of the ash hoist as claimed in claim 8, wherein the stirring shaft is sealed with the upper sieve plate and the lower sieve plate by packing, respectively.
10. The tail gas discharge device of the ashing machine as defined in claim 1, wherein a cyclone separator is provided between the water inlet of the reflux pump and the recovery tank, and a third switch valve is provided between the cyclone separator and the recovery tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921368730.1U CN211358140U (en) | 2019-08-21 | 2019-08-21 | Tail gas discharge device of ash melting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921368730.1U CN211358140U (en) | 2019-08-21 | 2019-08-21 | Tail gas discharge device of ash melting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211358140U true CN211358140U (en) | 2020-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921368730.1U Active CN211358140U (en) | 2019-08-21 | 2019-08-21 | Tail gas discharge device of ash melting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211358140U (en) |
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2019
- 2019-08-21 CN CN201921368730.1U patent/CN211358140U/en active Active
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