CN210021596U - Sludge drying machine tail gas treatment system - Google Patents
Sludge drying machine tail gas treatment system Download PDFInfo
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- CN210021596U CN210021596U CN201920679189.XU CN201920679189U CN210021596U CN 210021596 U CN210021596 U CN 210021596U CN 201920679189 U CN201920679189 U CN 201920679189U CN 210021596 U CN210021596 U CN 210021596U
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- mesh belt
- heat exchanger
- sludge dryer
- tail gas
- gas treatment
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Abstract
The utility model discloses a sludge drying machine tail gas treatment system belongs to tail gas treatment facility technical field. The utility model comprises a mesh belt type sludge dryer, a tubular heat exchanger, a dust removing device, a cooler, a steam-water separator, a filtering device, a reaction liquid storage tank, a spray tower and a waste liquid collector; the utility model discloses an energy cyclic utilization's mode through the cyclic utilization of gaseous phase and liquid phase, has greatly improved the energy utilization of equipment and has rateed manufacturing cost.
Description
Technical Field
The utility model relates to a sludge drying machine tail gas treatment system belongs to tail gas treatment equipment technical field.
Background
With the continuous acceleration of the urbanization process, China can generate huge amounts of municipal domestic sludge and industrial sludge every year. For this reason, various apparatuses for treating the above-mentioned sludge have been developed and manufactured.
The sludge drying technology is a common technology for reducing the water content of sludge for subsequent treatment of a toilet. The traditional sludge drying equipment adopts hot air generated by a coal-fired hot air furnace as a drying heat source, and has higher cost. In the process of drying the sludge, hot air for drying the sludge can take away moisture and leave the drying equipment with heat, and introduced fresh air needs heat energy to heat the hot air. If the waste heat energy source of the drying device is not fully utilized, a large amount of energy is wasted. The water vapor content in the flue gas generated in the drying process is very high, and the total dust content and odor concentration are too high due to the fact that sludge particles cannot be well separated, and pollution can be caused by direct discharge.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned problem that prior art exists, the utility model provides an improve heat source utilization rate, reduce exhaust emissions pollution's dry tail gas processing system.
The utility model discloses a sludge dryer tail gas treatment system, which comprises a mesh belt type sludge dryer, a tubular heat exchanger, a dust removal device, a cooler, a steam-water separator, a filtering device, a reaction liquid storage tank, a spray tower and a waste liquid collector; a hot air inlet is arranged in the area close to the bottom of the mesh belt type sludge dryer, and a hot air outlet is arranged in the area close to the top; the top of the tubular heat exchanger is provided with a waste heat inlet which is communicated with a hot air outlet of the mesh belt type sludge dryer, and the position of the heat exchanger close to the bottom is provided with a waste heat outlet which is connected with a dust removal device through a pipeline; a fresh air inlet and a fresh air outlet are arranged in the region between the waste heat outlet and the top end of the heat exchanger on the tube type heat exchanger, and tubes are arranged in the heat exchanger along the vertical direction; the dust removal device is respectively connected with a waste heat inlet of the tube type heat exchanger and an inlet of the cooler; the cooler is connected with the steam-water separator to separate gas and liquid into two phases; the liquid phase substance is conveyed to a filtering device through a pipeline, and the gas phase substance is conveyed to a spray tower; the filtering device is internally provided with a plurality of layers of fillers and is respectively connected with the reaction liquid storage tank and the waste liquid tank; the reaction liquid storage tank is used for storing a solution required by the spray tower and is connected with the spray tower through a pump and a pipeline; the spray tower is provided with an air outlet pipeline connected with a fresh air inlet of the tube type heat exchanger.
The utility model discloses an among the embodiment, the top of tubulation is no longer than the highest position of waste heat import, and the bottom of tubulation is not less than waste heat export highest position.
The utility model discloses an among the embodiment, shell and tube heat exchanger's new trend import and new trend export set up on same lateral wall.
The utility model discloses an in an embodiment, shell and tube heat exchanger lateral wall coating solar energy collection coating, solar energy collection coating includes but not limited to black chromium coating, black nickel coating, can high-efficient environmental protection utilize natural energy to carry out the hot-air heating.
In one embodiment of the utility model, a material distributor is arranged at the material port of the mesh belt type sludge dryer, so that the discharged material of the material distributor can directly enter the mesh belt type sludge dryer; a plurality of groups of mesh belt transmission devices are arranged in the mesh belt type sludge dryer, the end parts of the adjacent mesh belt transmission devices are staggered, the discharging position of the upper group of mesh belt transmission devices corresponds to the feeding position of the lower group of mesh belt transmission devices, and the projection of the movement path of the sludge on the mesh belt in the direction vertical to the mesh belt transmission is S-shaped; the mesh belt type sludge dryer is provided with a hot air inlet and a hot air outlet; the hot air inlet is arranged at the lower part of the dryer, and the hot air outlet is arranged at the upper part of the dryer.
In an embodiment of the present invention, the filler in the filtering device is pebbles, ceramsite, zeolite, and quartz sand in sequence along the flowing direction of the liquid.
In an embodiment of the present invention, the dust removing device includes an impact dust remover or a particle layer dust remover.
In an embodiment of the present invention, the cooler is a water cooler, and the cold water required by the water cooler is taken from the cooling tower.
In an embodiment of the present invention, an activated carbon layer is disposed near the top of the spray tower for adsorbing volatile gas in the dry tail gas.
The utility model has the advantages of as follows:
1. the utility model utilizes the exhausted damp and hot air by arranging the tube type heat exchanger; through setting up solar energy collection coating, turn into solar energy heat energy, utilize the heat of damp and hot air itself to heat the new trend.
2. The utility model discloses an energy cyclic utilization's mode, the heat energy that turns into the solar energy that dry tail gas and heat exchanger surface solar energy collection coating collected heats the dry air after removing dust, vapor-water separation, filtration and spraying purification as tubular heat exchanger's heat source, lets in it again to the sludge drying machine in, only needs to mend very little fresh air can realize hot-blast inner loop process. The water brought out along with the tail gas is subjected to steam-water separation and filtration, and the filtered clear liquid can be partially used as a spraying reaction liquid solvent required by a spray tower for a spraying process, so that water circulation is realized. The utility model discloses greatly improve the energy utilization of equipment and rateed, reduced manufacturing cost.
Drawings
FIG. 1 is a schematic view of the structure of the tail gas treatment system of the sludge dryer of the present invention;
FIG. 2 is a front view of a tube type heat exchanger of the tail gas treatment system of the sludge dryer of the present invention;
FIG. 3 is a left side view of the tube type heat exchanger of the tail gas treatment system of the sludge dryer of the present invention;
FIG. 4 is a sectional view along A-A' of the tube type heat exchanger of the tail gas treatment system of the sludge dryer of the present invention;
wherein, 1, the mesh belt type sludge dryer; 2, a shell and tube heat exchanger; 3, a dust removal device; 4, a cooler; 5, a steam-water separator; 6, a filtering device; 7, a reaction liquid storage tank; 8, a spray tower; 9, a waste liquid collector; 10, a material distributor; 21, a fresh air outlet; 22, a waste heat outlet; 23, a waste heat inlet; 24, a fresh air inlet, 25 and a tube array.
Detailed Description
To achieve the above objects, features and advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, the present invention will be described in detail with reference to the accompanying drawings.
As shown in figures 1-4, the utility model discloses a sludge drying machine tail gas processing system includes mesh belt sludge drying machine 1, shell and tube heat exchanger 2, dust collector 3, cooler 4, catch water 5, filter equipment 6, reaction liquid storage tank 7, spray column 8, waste liquid collector 9.
A material distributing machine 10 is arranged at a material port of the mesh belt type sludge dryer 1, so that the discharged material of the material distributing machine can directly enter the mesh belt type sludge dryer 1; a plurality of groups of mesh belt transmission devices are arranged in the mesh belt type sludge dryer, the end parts of the adjacent mesh belt transmission devices are staggered, the discharging position of the upper group of mesh belt transmission devices corresponds to the feeding position of the lower group of mesh belt transmission devices, and the projection of the movement path of the sludge on the mesh belt in the direction vertical to the mesh belt transmission is S-shaped; the mesh belt type sludge dryer is provided with a hot air inlet and a hot air outlet; the hot air inlet is arranged at the lower part of the dryer, and the hot air outlet is arranged at the upper part of the dryer; the hot air inlet is connected with a fresh air outlet 21 of the tube type heat exchanger through a pipeline.
The bottom of the tubular heat exchanger 2 is provided with a waste heat outlet 22 which is connected with the dust removal device 3 through a pipeline; the top of the heat exchanger is provided with a waste heat inlet 23 which is communicated with a hot air outlet of the mesh belt type sludge dryer; the fresh air inlet 24 and the fresh air outlet 21 on the tube type heat exchanger are arranged in the area between the waste heat outlet 22 and the top end of the heat exchanger, a tube array 25 is arranged in the heat exchanger, the tube array 25 is arranged along the vertical direction, and the top of the tube array is flush with the highest position of the fresh air outlet 21; the lowest part of the tube array is flush with the highest position of the waste heat outlet 22.
Further, the fresh air inlet 24 and the fresh air outlet 21 of the tube type heat exchanger 2 are arranged on the same side wall.
Further, the outer side wall of the tubular heat exchanger 2 is coated with a solar heat collecting coating, the solar heat collecting coating comprises but is not limited to a black chromium coating and a black nickel coating, and the hot air heating can be carried out by utilizing natural energy in an efficient and environment-friendly manner.
The dust removing device 3 can be an impact dust remover or a particle layer dust remover; the dust removal device 3 is respectively connected with the waste heat outlet 22 of the tubular heat exchanger 2 and the inlet of the cooler 4; the cooler 4 can be a water cooler, and cooling water can be taken from a cooling tower; the cooler 4 is connected with a steam-water separator 5 at the back, and gas and liquid are separated into two phases under the negative pressure action of a vacuum pump; the liquid is conveyed to the filtering device 6 through a pipeline, and the gas is conveyed to the spray tower 8.
The filter device 6 is internally provided with a plurality of layers of fillers, which are pebbles, ceramsite, zeolite and quartz sand in sequence along the direction from water inlet to water outlet; the filtering device 6 is respectively connected with a reaction liquid storage tank 7 and a waste liquid tank 9, and the reaction liquid storage tank 7 is connected with a spray tower 8 through a pump and a pipeline.
Further, an activated carbon layer is arranged near the top of the spray tower 8 and used for adsorbing volatile gas in the sludge drying tail gas.
The utility model discloses a theory of operation does: the sludge enters the mesh belt type sludge drying machine 1 from the material distributor 10, hot air is introduced from an air inlet below the mesh belt type sludge drying machine to exchange heat with wet sludge moving along with the mesh belt transmission mechanism, the moisture of the wet sludge is taken away, and the wet air containing the moisture is discharged from an air outlet above the mesh belt type sludge drying machine under the action of the fan. The exhausted damp and hot air enters from a waste heat inlet 23 at the top of the heat exchanger, passes through the tubes 25 and heats the tubes 25, and finally is exhausted from a waste heat outlet 22. The solar heat collection coating arranged on the side wall of the tubular heat exchanger 2 is converted into heat energy by absorbing solar energy, and plays a role in heating the heat exchanger, so that the heat exchanger keeps higher temperature, and the loss of heat energy is reduced. The air discharged from the waste heat outlet 22 is dedusted by the dedusting device 3, and then is separated from the liquid by the cooler 4 and the steam-water separator 5. The separated gas enters a spray tower 8 from the bottom of the spray tower 8, the liquid is filtered into tiny particles through a filtering device 6, a part of the filtered liquid is used as solvent make-up liquid and is introduced into a reaction liquid storage tank 7, the reaction liquid (such as sodium citrate) required by dissolution and spraying is dissolved, and the other part of the filtered liquid enters a waste liquid collector 9; the liquid entering the reaction liquid storage tank 7 is mixed with solute required by spraying, and gas is purified in the spray tower. The treated gas is introduced into a fresh air inlet 54 of the tubular heat exchanger 2 under the action of a pump, passes through the area where the tubes 25 are located, leaves from a fresh air outlet 21, and returns to the mesh-belt sludge dryer 1. The sprayed waste liquid flows out from the lower part of the spray tower 8 and is collected into a waste liquid collector 9 for subsequent treatment.
The protection scope of the present invention is not limited to the above embodiments, and any modifications, equivalent replacements, and improvements that can be made by a person skilled in the art within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The tail gas treatment system of the sludge dryer is characterized by comprising a mesh belt type sludge dryer, a tube type heat exchanger, a dust removal device, a cooler, a steam-water separator, a filtering device, a reaction liquid storage tank, a spray tower and a waste liquid collector; a hot air inlet is arranged in the area close to the bottom of the mesh belt type sludge dryer, and a hot air outlet is arranged in the area close to the top; the top of the tubular heat exchanger is provided with a waste heat inlet which is communicated with a hot air outlet of the mesh belt type sludge dryer, and the position of the heat exchanger close to the bottom is provided with a waste heat outlet which is connected with a dust removal device through a pipeline; a fresh air inlet and a fresh air outlet are arranged in the region between the waste heat outlet and the top end of the heat exchanger on the tube type heat exchanger, and tubes are arranged in the heat exchanger along the vertical direction; the dust removal device is respectively connected with a waste heat inlet of the tube type heat exchanger and an inlet of the cooler; the cooler is connected with the steam-water separator to separate gas and liquid into two phases; the liquid phase substance is conveyed to a filtering device through a pipeline, and the gas phase substance is conveyed to a spray tower; the filtering device is internally provided with a plurality of layers of fillers and is respectively connected with the reaction liquid storage tank and the waste liquid tank; the reaction liquid storage tank is used for storing a solution required by the spray tower and is connected with the spray tower through a pump and a pipeline; the spray tower is provided with an air outlet pipeline connected with a fresh air inlet of the tube type heat exchanger.
2. The sludge dryer tail gas treatment system as claimed in claim 1, wherein the top of the tube array is not higher than the highest position of the waste heat inlet, and the bottom of the tube array is not lower than the highest position of the waste heat outlet.
3. The sludge dryer tail gas treatment system as claimed in claim 1 or 2, wherein the fresh air inlet and the fresh air outlet of the tubular heat exchanger are arranged on the same side wall.
4. The sludge dryer tail gas treatment system as claimed in claim 1, wherein the outer side wall of the tubular heat exchanger is coated with a solar heat collection coating.
5. The sludge dryer tail gas treatment system as claimed in claim 1, wherein the filler in the filtering device is pebbles, ceramsite, zeolite and quartz sand in sequence along the liquid flowing direction.
6. The sludge dryer tail gas treatment system as claimed in claim 1, wherein the dust removing device comprises an impact dust remover or a particle layer dust remover.
7. The sludge dryer tail gas treatment system as claimed in claim 1, wherein the cooler is a water cooler, and cold water required by the water cooler is taken from a cooling tower.
8. The sludge dryer tail gas treatment system as claimed in claim 1, wherein an activated carbon layer is arranged near the top of the spray tower.
9. The sludge dryer tail gas treatment system according to claim 1, wherein a material distributor is arranged at a material port of the mesh belt type sludge dryer, so that the material discharged by the material distributor can directly enter the mesh belt type sludge dryer; a plurality of groups of mesh belt transmission devices are arranged in the mesh belt type sludge dryer, the end parts of the adjacent mesh belt transmission devices are staggered, the discharging position of the upper group of mesh belt transmission devices corresponds to the feeding position of the lower group of mesh belt transmission devices, and the projection of the movement path of the sludge on the mesh belt in the direction vertical to the mesh belt transmission is S-shaped; the mesh belt type sludge dryer is provided with a hot air inlet and a hot air outlet; the hot air inlet is arranged at the lower part of the dryer, and the hot air outlet is arranged at the upper part of the dryer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920679189.XU CN210021596U (en) | 2019-05-13 | 2019-05-13 | Sludge drying machine tail gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920679189.XU CN210021596U (en) | 2019-05-13 | 2019-05-13 | Sludge drying machine tail gas treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210021596U true CN210021596U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920679189.XU Active CN210021596U (en) | 2019-05-13 | 2019-05-13 | Sludge drying machine tail gas treatment system |
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|---|---|
| CN (1) | CN210021596U (en) |
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- 2019-05-13 CN CN201920679189.XU patent/CN210021596U/en active Active
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