CN209816553U - Recycling device for papermaking drying tail gas - Google Patents
Recycling device for papermaking drying tail gas Download PDFInfo
- Publication number
- CN209816553U CN209816553U CN201920319865.2U CN201920319865U CN209816553U CN 209816553 U CN209816553 U CN 209816553U CN 201920319865 U CN201920319865 U CN 201920319865U CN 209816553 U CN209816553 U CN 209816553U
- Authority
- CN
- China
- Prior art keywords
- air
- heat exchanger
- hood
- pipeline
- tail gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a papermaking stoving tail gas's recycle device, including gas hood, drying portion, two rows of dryer units and blowing case, the outside of gas hood communicates in proper order and is provided with gas hood exhaust pipe way, gas hood exhaust fan, heat exchanger, air heater, gas hood forced draught blower and gas hood air feed pipeline, be provided with filter screen ware, heat exchanger group, axial flow exhaust fan and air mixing system above the heat exchanger, air mixing system includes first air mixing machine and second air mixing machine, heat exchanger group and second air mixing machine all communicate to the comdenstion water collecting system; a first steam spray pipe, a second steam spray pipe and a third steam spray pipe are respectively arranged above the heat exchanger, the filter screen device and the heat exchanger group; and air inlet openings are respectively formed in one sides of the heat exchanger, the heat exchanger group and the second air mixer. In this way, the utility model discloses can eliminate pollution such as dust in the exhaust gas, retrieve heat energy and water wherein simultaneously, have good practical value.
Description
Technical Field
The utility model relates to a papermaking trade tail gas treatment technical field especially relates to a recycle device of papermaking stoving tail gas.
Background
The paper is a common production material and is widely applied to the fields of office work, printing, packaging and the like, in the production process of the paper, the paper is squeezed and dehydrated after pulping, deinking, bleaching, forming and papermaking, the paper needs to be further dried and formed after the squeezing and dehydration, and a large amount of steam tail gas is generated in the drying process.
The steam tail gas generated in the drying process has the characteristics of high temperature and high humidity, and two treatment modes are generally adopted in the prior art, namely, the steam is directly discharged into the atmosphere through a gas hood system; the other is to discharge the steam tail gas after the temperature of the steam tail gas is reduced by a common condenser.
The tail gas emission after evaporation of a papermaking drying part is a main source of air pollution formed in a papermaking workshop, the tail gas has high dust content and peculiar smell, and the white smoke phenomenon can occur when the environmental temperature is lower than the dew point of the smoke temperature in winter; in addition, the heat energy discharged by the papermaking drying part is mainly in the steam tail gas and is directly discharged or cannot be effectively treated, so that energy consumption waste is caused; the water that paper-making in-process consumed also has 20 ~ 40% along with drying tail gas discharge, causes the waste of energy equally, consequently, above-mentioned two kinds of treatment methods all have some drawbacks.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a recycle device of papermaking stoving tail gas utilizes gas hood to send wind heat recovery structure, automatic spray structure isotructure, eliminates pollution such as dust in the exhaust gas, retrieves heat energy and water wherein simultaneously, has good practical value.
In order to solve the technical problem, the utility model discloses a technical scheme be: the recycling device for the drying tail gas of papermaking comprises an air hood, wherein a drying part is arranged in the air hood, two rows of drying cylinder units are arranged in the drying part in parallel, a blowing box is arranged between adjacent horizontal drying cylinder units, an air hood exhaust pipeline, an air hood exhaust fan, a heat exchanger, an air hood blower and an air hood air supply pipeline are sequentially communicated and arranged on the outer side of the air hood to form air path circulation, an air heater is arranged between the heat exchanger and the air hood blower, a filter screen device is arranged above the heat exchanger, a heat exchanger set and an air mixing system are sequentially arranged at one end, away from the air heater, of the filter screen device, and an axial flow exhaust fan is arranged between the heat exchanger set and the air mixing system; the air mixing system comprises a first air mixing machine and a second air mixing machine, and a hot air transmission pipe is communicated between the first air mixing machine and the air supply pipeline of the air hood; the heat exchanger, the heat exchanger group and the second air mixer are communicated to a condensed water collecting system;
a first steam spray pipe is arranged between the heat exchanger and the filter screen device, a second steam spray pipe is arranged between the filter screen device and the heat exchanger group, and a third steam spray pipe is arranged between the axial flow exhaust fan and the heat exchanger group;
one side of the heat exchanger is provided with a first air inlet for entering external fresh air, one side of the heat exchanger group is provided with a second air inlet for entering the external fresh air, and one side of the second air mixer is provided with a third air inlet for entering the external fresh air.
Further, the condensate water collecting system comprises a first condensate water pipeline connected with the heat exchanger, a second condensate water pipeline connected with the heat exchanger group, and a third condensate water pipeline connected with the second air mixing machine, wherein the first condensate water pipeline, the second condensate water pipeline and the third condensate water pipeline are gathered and connected to the water filtering system.
Further, the water filtration system includes the collection water tank, one side of collection water tank is provided with the filter, the collection water tank with be provided with the water pump between the filter, the filter deviates from one side of collection water tank is provided with the clean water basin.
Furthermore, a suspended ceiling heat recovery system is arranged between the heat exchanger and the heat exchanger group.
Furthermore, the ceiling heat recovery system comprises an exhaust pipeline connected with the heat exchanger group, a wet-end ceiling structure is arranged at one end, away from the heat exchanger group, of the exhaust pipeline, and a preheating pipeline is communicated between the exhaust pipeline and the heat exchanger.
Further, a first filter is arranged between the first air inlet and the heat exchanger; a second filter is arranged between the second air inlet and the heat exchanger set.
Furthermore, a cold air centrifugal fan is arranged between the third air inlet and the second air mixing fan.
The utility model has the advantages that: the utility model provides a pair of papermaking stoving tail gas's recycle device utilizes gas hood to send wind heat recovery structure, automatic spray structure, mixed wind system, gas hood air supply to preheat and furred ceiling heat recovery system, comdenstion water recovery system and the water filtration system that corresponds, eliminates impurity pollution such as dust in the exhaust gas, recycle heat energy and moisture wherein simultaneously, and exhaust gas's humidity and heat are effectively utilized, have good market perspective.
Drawings
FIG. 1 is a schematic structural view of a device for recycling drying tail gas from paper making;
fig. 2 is an enlarged view of a portion a of fig. 1 for embodying the structure of the dryer unit and the blow box in the hood;
FIG. 3 is an enlarged view of the portion B of FIG. 1, for showing the structure of the hood exhaust fan, the heat exchanger, the first steam shower pipe, etc.;
FIG. 4 is an enlarged view of the portion C of FIG. 1, showing the structure of the air hood blower, the air hood supply duct, the air heater, etc.;
fig. 5 is a schematic view of a partial structure of a recycling device for drying exhaust gas in paper making according to the present invention, which is used for more clearly showing the connection relationship between the structures;
FIG. 6 is an enlarged view of section D of FIG. 5, showing a strainer, a heat exchanger set and a corresponding steam spray structure;
fig. 7 is an enlarged view of a portion E of fig. 5 for showing an external air inlet structure provided at one side of the second air mixer;
the parts in the drawings are numbered as follows:
1. a gas hood; 2. a drying section; 3. a dryer unit; 4. a blow box; 5. an air hood exhaust duct; 6. an air hood exhaust fan; 7. a heat exchanger; 8. a gas hood blower; 9. a gas hood supply air line; 10. an air heater; 11. a screen filter; 12. a heat exchanger group; 13. a wind mixing system; 131. a first air mixer; 132. a second air mixer; 14. an axial flow exhaust fan; 15. a hot air delivery pipe; 16. a first steam shower; 17. a second steam shower; 18. a third steam shower pipe; 19. a first air inlet port; 20. a second air inlet opening; 21. a third air inlet opening; 22. a first condensate line; 23. a second condensate line; 24. a third condensate line; 25. a water collection tank; 26. a filter; 27. a water pump; 28. a clean water tank; 29. an exhaust duct; 30. a wet end ceiling structure; 31. a preheating pipeline; 32. a first filter; 33. a second filter; 34. a cold air centrifugal fan.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
As shown in fig. 1 and 2, a recycling device for drying tail gas in papermaking comprises an air hood 1, a drying part 2 is arranged in the air hood 1 and used for recycling steam generated by paper so as to achieve better drying and energy saving, two rows of drying cylinder units 3 are arranged in parallel in the drying part 2, the drying cylinder units 3 are arranged in the air hood 1, heat dissipation can be avoided in the process of drying paper web, the drying speed is increased, a blowing box 4 is arranged between adjacent horizontal drying cylinder units 3, and the blowing box 4 can be arranged as a bag-type blowing box.
As shown in fig. 1, 3 and 4, an air hood exhaust pipeline 5, an air hood exhaust fan 6, a heat exchanger 7, an air hood blower 8 and an air hood supply pipeline 9 are sequentially communicated with the outer side of the air hood 1 to form an air path circulation, wherein the air hood exhaust pipeline 5 is provided with two pipelines, each pipeline corresponds to one air hood exhaust fan 6, the air hood exhaust fan 6 provides air extraction power to extract and flow water vapor with high temperature and humidity generated in the air hood 1 into the heat exchanger 7, and the heat exchanger 7 is a wind-wind heat exchanger. One side of the heat exchanger 7 is provided with a first air inlet 19 for entering external fresh air, a first filter 32 is arranged between the first air inlet 19 and the heat exchanger 7 for collecting dust in the external air and ensuring the cleanliness of the entering air, the temperature of the external fresh air entering the heat exchanger 7 can be raised, the gas entering from the air hood exhaust fan 6 and the first air inlet 19 is mixed and then is transmitted to the air heater 10, the gas temperature is heated to the required temperature, and then the gas enters the air hood 1 through the air hood air supply pipeline 9 for drying the paper. Since the temperature of the gas discharged from the left side of the gas cover 1 is higher than the temperature of the gas to be blown and the gas pressure is unbalanced, the gas amount needs to be increased by the gas cover blower 8 in order to maintain the gas pressure stable.
As shown in fig. 5 and 6, a filter screen 11 is disposed above the heat exchanger 7, one end of the filter screen 11 away from the air heater 10 is sequentially provided with a heat exchanger group 12 and an air mixing system 13, and an axial flow exhaust fan 14 is disposed between the heat exchanger group 12 and the air mixing system 13 to provide a unidirectional transmission power for the air. The air mixing system 13 comprises two air mixing machines, namely: a first mixer fan 131 and a second mixer fan 132. The heat exchanger 7, the heat exchanger group 12 and the air mixing system 13 are all communicated to a condensed water collecting system, and the condensed water collecting system comprises a first condensed water pipeline 22 connected with the heat exchanger 7, a second condensed water pipeline 23 connected with the heat exchanger group 12 and a third condensed water pipeline 24 connected with the second air mixing machine 132.
As shown in fig. 3, 5 and 6, a first steam shower pipe 16 is disposed between the heat exchanger 7 and the strainer 11, on one hand, the first steam shower pipe is used for reducing the temperature of the gas extracted by the heat exchanger 7, supplementing fresh air entering from one side, on the other hand, the first steam shower pipe is used for condensing impurities, dust and the like in the gas extracted by the heat exchanger 7 from the gas hood 1, purifying the gas, and in the process, the heat exchange condensed water and the shower water after condensing the purified gas are transmitted to the water filtering system through a first condensed water pipeline 22 and are treated in a centralized manner. A second steam spray pipe 17 is arranged between the filter screen device 11 and the heat exchanger group 12 and is used for spraying the filter screen in the filter screen device 11. A third steam spray pipe 18 is arranged between the axial flow exhaust fan 14 and the heat exchanger group 12, a second air inlet 20 used for entering external fresh air is arranged on one side of the heat exchanger group 12, a second filter 33 is arranged between the second air inlet 20 and the heat exchanger group 12, the temperature of the exhaust gas is further reduced through the third steam spray pipe 18, the external fresh air is supplemented, impurities in the exhaust gas are further reduced, and condensed water is transmitted to a water filtering system through a second condensation water pipeline 23 and is treated in a centralized mode. The time of spraying the extracted gas by the first steam spraying pipe 16, the second steam spraying pipe 17 and the third steam spraying pipe 18 can be controlled by programming and timing of the DCS.
As shown in fig. 5 and 7, a third air inlet 21 for allowing fresh air to enter the outside is provided at one side of the second air mixer 132, a cold air centrifugal fan 34 is provided between the third air inlet 21 and the second air mixer 132 for further reducing the temperature and humidity of the exhaust gas, and the condensed water flow carries the condensed impurities to be transmitted to the water filtration system through the third condensed water pipe 24 for centralized treatment. A hot air transmission pipe 15 is communicated between the first air mixer 131 and the air supply pipeline 9 of the air hood, and the humidity of finally discharged air is further reduced by the heat dry air transmitted by the hot air transmission pipe 15.
As shown in fig. 5, the water filtering system includes a collecting water tank 25 for collecting water collected from the first condensate pipe 22, the second condensate pipe 23, and the third condensate pipe 24, a filter 26 disposed at one side of the collecting water tank 25 for filtering water and performing secondary use, and a water pump 27 disposed between the collecting water tank 25 and the filter 26 for providing water flow transmission power. The water filtered by the filter 26 is transferred to a clean water tank 28 for recycling in the production process. And a suspended ceiling heat recovery system is arranged between the heat exchanger 7 and the heat exchanger group 12, so that the problem of water dripping in a workshop in winter is solved. The suspended ceiling heat recovery system comprises an exhaust pipeline 29 connected with the heat exchanger group 12, a wet-part suspended ceiling structure 30 is arranged at one end, away from the heat exchanger group 12, of the exhaust pipeline 29, and the heat transmitted from the heat exchanger group 12 heats the wet-part suspended ceiling structure 30, so that the problem of water dripping in a workshop in winter is solved; at the same time, a part of the heat discharged from the heat exchanger group 12 is re-transmitted to the heat exchanger 7 through the preheating pipeline 31, and the heat is continuously utilized.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (7)
1. The utility model provides a recycle device of papermaking stoving tail gas, includes gas hood (1), be provided with drying portion (2) in gas hood (1), parallel arrangement has two rows of dryer units (3) in drying portion (2), is provided with between adjacent horizontal dryer unit (3) case of blowing (4), its characterized in that: an air hood exhaust pipeline (5), an air hood exhaust fan (6), a heat exchanger (7), an air hood blower (8) and an air hood air supply pipeline (9) are sequentially communicated with the outer side of the air hood (1) to form air path circulation, an air heater (10) is arranged between the heat exchanger (7) and the air hood blower (8), a filter screen device (11) is arranged above the heat exchanger (7), a heat exchanger group (12) and an air mixing system (13) are sequentially arranged at one end, deviating from the air heater (10), of the filter screen device (11), and an axial flow exhaust fan (14) is arranged between the heat exchanger group (12) and the air mixing system (13); the air mixing system (13) comprises a first air mixing machine (131) and a second air mixing machine (132), and a hot air transmission pipe (15) is communicated between the first air mixing machine (131) and the air hood air supply pipeline (9); the heat exchanger (7), the heat exchanger group (12) and the second air mixer (132) are communicated to a condensed water collecting system;
a first steam spray pipe (16) is arranged between the heat exchanger (7) and the filter screen device (11), a second steam spray pipe (17) is arranged between the filter screen device (11) and the heat exchanger group (12), and a third steam spray pipe (18) is arranged between the axial flow exhaust fan (14) and the heat exchanger group (12);
one side of the heat exchanger (7) is provided with a first air inlet (19) for entering outside fresh air, one side of the heat exchanger group (12) is provided with a second air inlet (20) for entering outside fresh air, and one side of the second air mixer (132) is provided with a third air inlet (21) for entering outside fresh air.
2. The recycling device of the drying tail gas in the paper making process according to claim 1, which is characterized in that: the condensed water collecting system comprises a first condensed water pipeline (22) connected with the heat exchanger (7), a second condensed water pipeline (23) connected with the heat exchanger group (12), and a third condensed water pipeline (24) connected with the second air mixer (132), wherein the first condensed water pipeline (22), the second condensed water pipeline (23) and the third condensed water pipeline (24) are connected to the water filtering system in a gathering mode.
3. The recycling device of the drying tail gas in the paper making process according to claim 2, which is characterized in that: the water filtering system comprises a collecting water tank (25), a filter (26) is arranged on one side of the collecting water tank (25), a water pump (27) is arranged between the collecting water tank (25) and the filter (26), and a clean water tank (28) is arranged on one side of the filter (26) deviating from the collecting water tank (25).
4. The recycling device of the drying tail gas in the paper making process according to claim 1, which is characterized in that: and a suspended ceiling heat recovery system is also arranged between the heat exchanger (7) and the heat exchanger group (12).
5. The recycling device of the drying tail gas in the paper making process according to claim 4, which is characterized in that: the suspended ceiling heat recovery system comprises an exhaust pipeline (29) connected with a heat exchanger group (12), a wet-end suspended ceiling structure (30) is arranged at one end, deviating from the heat exchanger group (12), of the exhaust pipeline (29), and a preheating pipeline (31) is communicated between the exhaust pipeline (29) and the heat exchanger (7).
6. The recycling device of the drying tail gas in the paper making process according to claim 1, which is characterized in that: a first filter (32) is arranged between the first air inlet (19) and the heat exchanger (7); a second filter (33) is arranged between the second air inlet opening (20) and the heat exchanger pack (12).
7. The recycling device of the drying tail gas in the paper making process according to claim 1, which is characterized in that: a cold air centrifugal fan (34) is arranged between the third air inlet (21) and the second mixing fan (132).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920319865.2U CN209816553U (en) | 2019-03-14 | 2019-03-14 | Recycling device for papermaking drying tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920319865.2U CN209816553U (en) | 2019-03-14 | 2019-03-14 | Recycling device for papermaking drying tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209816553U true CN209816553U (en) | 2019-12-20 |
Family
ID=68875562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920319865.2U Active CN209816553U (en) | 2019-03-14 | 2019-03-14 | Recycling device for papermaking drying tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209816553U (en) |
-
2019
- 2019-03-14 CN CN201920319865.2U patent/CN209816553U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202809328U (en) | Heat pump clothes dryer | |
| CN201774913U (en) | High-efficiency energy-saving water-removing machine | |
| CN101911985B (en) | Efficient energy-saving green removing machine | |
| CN106283816A (en) | Drying system and papermaking process thereof | |
| CN206927781U (en) | A kind of differential sludge drier | |
| CN209816553U (en) | Recycling device for papermaking drying tail gas | |
| CN211367384U (en) | Negative pressure type sludge drying structure | |
| CN209639467U (en) | A kind of heat pump Drying system of agricultural products with Waste Heat Recovery | |
| CN110525040A (en) | A kind of printcloth drying equipment and its furnace drying method | |
| CN105972984A (en) | Waste heat recycling device of textile cloth dryer | |
| CN105066623A (en) | Waste gas utilizing method and device of loose dryer | |
| CN212117042U (en) | Tobacco leaf drying condensate water recycling device | |
| CN212452091U (en) | Papermaking pulp board drying device | |
| CN204881054U (en) | Pine formula drying -machine waste gas utilizes device | |
| CN201080567Y (en) | Washing machine drying and condensing unit | |
| CN208333032U (en) | Thermal energy dryer | |
| CN210309518U (en) | Cotton polyester cloth fabric printing device | |
| CN210070491U (en) | Cloth drying device for spinning | |
| CN207685420U (en) | A kind of scutcher with functions/drying | |
| CN208594424U (en) | A kind of drying section of paper machine of environment-friendly and energy-efficient | |
| CN207210235U (en) | Steam-type sludge drying mechanism | |
| CN209619745U (en) | A kind of drying unit of papermaking | |
| CN219856445U (en) | Emission reduction type printing and drying device | |
| CN210117594U (en) | Condensing device of drying machine | |
| CN115870185B (en) | Waste heat recovery device for drying equipment after non-woven fabric gum dipping |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |