CN215952152U - Flash drying device - Google Patents
Flash drying device Download PDFInfo
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- CN215952152U CN215952152U CN202122251900.1U CN202122251900U CN215952152U CN 215952152 U CN215952152 U CN 215952152U CN 202122251900 U CN202122251900 U CN 202122251900U CN 215952152 U CN215952152 U CN 215952152U
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- drying tower
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- air
- drying
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- 238000001035 drying Methods 0.000 title claims abstract description 80
- 238000001704 evaporation Methods 0.000 claims abstract description 25
- 230000008020 evaporation Effects 0.000 claims abstract description 25
- 238000009833 condensation Methods 0.000 claims abstract description 18
- 230000005494 condensation Effects 0.000 claims abstract description 18
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 18
- 239000000463 material Substances 0.000 description 15
- 239000007789 gas Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model provides a flash drying device, includes forced draught blower, hot-blast furnace, drying tower, draught fan, still includes heat pipe exchanger, the top of drying tower is equipped with the discharge gate, and the bottom is equipped with the feed inlet, and seals through the lid respectively, the supply-air outlet of forced draught blower links to each other through the air inlet of first pipeline with the hot-blast furnace, and the gas outlet of this hot-blast furnace links to each other with the lateral wall bottom of drying tower, the air intake of draught fan passes through the lateral wall top of second pipeline with the drying tower and links to each other, heat pipe exchanger's evaporation zone links to each other with the second pipeline, heat pipe exchanger's condensation segment links to each other with first pipeline. The utility model has simple structure and low modification cost, and can effectively recycle the heat of the tail gas discharged by the drying tower and avoid the heat energy pollution.
Description
Technical Field
The utility model relates to the field of powder treatment, in particular to a flash evaporation drying device.
Background
The flash evaporation drying equipment is used for continuously drying the powder wet material. At present, in the commonly used flash evaporation drying equipment, normal temperature air enters a hot blast stove through a blower, is heated to 180 ℃, then enters a drying tower, and fully exchanges heat with wet powder materials to separate moisture contained in the wet powder materials, so that the aim of drying the wet powder materials is fulfilled. After dust is removed from high-temperature air carrying moisture, the high-temperature air is discharged by a draught fan at the temperature of about 92 ℃, contains a large amount of heat energy, causes heat energy pollution and serious waste of heat energy.
Therefore, how to effectively utilize the heat wasted by the flash drying equipment is a problem to be solved by those skilled in the art.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides a flash evaporation drying device which is simple in structure and low in modification cost, and can effectively recycle the heat of tail gas discharged by a drying tower and avoid heat energy pollution.
The technical scheme of the utility model is as follows: the utility model provides a flash drying device, includes forced draught blower, hot-blast furnace, drying tower, draught fan, still includes heat pipe exchanger, the top of drying tower is equipped with the discharge gate, and the bottom is equipped with the feed inlet, and seals through the lid respectively, the supply-air outlet of forced draught blower links to each other through the air inlet of first pipeline with the hot-blast furnace, and the gas outlet of this hot-blast furnace links to each other with the lateral wall bottom of drying tower, the air intake of draught fan passes through the lateral wall top of second pipeline with the drying tower and links to each other, heat pipe exchanger's evaporation zone links to each other with the second pipeline, heat pipe exchanger's condensation segment links to each other with first pipeline.
The first pipeline is provided with a first expansion joint, and the condensation section of the heat pipe heat exchanger is arranged in the inner space of the first expansion joint.
And a second expansion joint is arranged on the second pipeline, and the evaporation section of the heat pipe heat exchanger is arranged in the inner space of the second expansion joint.
And a filter screen is arranged at the upstream end of the second pipeline.
And the connecting point of the hot blast stove and the drying tower and the connecting point of the second pipeline and the drying tower are respectively positioned at two sides of the drying tower.
And the evaporation section of the heat pipe heat exchanger is positioned below the condensation section.
Adopt above-mentioned technical scheme to have following beneficial effect:
1. the flash drying device comprises an air feeder, a hot blast stove, a drying tower and an induced draft fan, and further comprises a heat pipe heat exchanger, wherein the air feeder is used for providing air to the drying tower as a medium for separating moisture, the hot blast stove is used for heating the air provided by the air feeder, the efficiency of separating moisture contained in the wet powder material is improved, the drying tower is used as a space for drying the wet powder material, and the induced draft fan is used for forcibly discharging the wet hot air after separating moisture in the drying tower out of the drying tower so as to improve the drying efficiency of the high-temperature dry air in the drying tower. The top of drying tower is equipped with the discharge gate, and the bottom is equipped with the feed inlet, and seals through the lid respectively, and wet material of powder is advanced into in the bottom of drying tower, and the dry material of powder is arranged at the top, enlarges the area of contact of wet material of powder and hot and dry air, improves the drying efficiency of drying tower, and the dry material of thoroughly dried powder is taken out from the top of drying tower by the air current, and the wet material of not thoroughly dried powder remains and continues to dry in the drying tower, can also effectively guarantee that the moisture content of discharged dry material of powder satisfies relevant standard. The air supply outlet of the air feeder is connected with the air inlet of the hot blast stove through a first pipeline, the air outlet of the hot blast stove is connected with the bottom of the side wall of the drying tower, air provided by the air feeder is heated to 180 ℃ through the hot blast stove and then serves as dry hot air, the dry hot air is conveyed into the drying tower from the bottom of the drying tower and serves as a medium for separating moisture, wet powder can be efficiently dried, the dry hot air rises and is collected to the top of the drying tower, and moisture contained in the wet powder is further taken away. The air intake of draught fan links to each other through the lateral wall top of second pipeline with the drying tower, and the damp and hot air that carries with moisture collects at the top of drying tower, forces the discharge drying tower through the draught fan, does benefit to dry high temperature air (dry and hot air) and gets into the wet material of drying tower continuous drying powder. The evaporation section of the heat pipe heat exchanger is connected with the second pipeline, and when high-temperature air carrying moisture passes through the evaporation section of the heat pipe heat exchanger, the heat in the high-temperature air causes working media in the evaporation section of the heat pipe heat exchanger to be heated and evaporated or boiled, so that the heat of the damp and hot air in the second pipeline is absorbed. The condensation section of the heat pipe heat exchanger is connected with the first pipeline, the working medium absorbing heat is condensed into liquid in the condensation section of the heat pipe heat exchanger, and simultaneously latent heat of vaporization is released to heat the normal-temperature air to be fed into the hot blast stove, so that the heating load of the hot blast stove can be effectively reduced, and the energy consumption of the hot blast stove is reduced.
2. The first pipeline is provided with a first expansion joint, the condensation section of the heat pipe exchanger is arranged in the inner space of the first expansion joint, and the normal-temperature air conveyed to the hot blast stove by the air feeder is buffered and decelerated at the first expansion joint and fully contacted with the condensation section of the heat pipe exchanger, so that the temperature rise is realized, and the preheating efficiency of the heat pipe exchanger on the normal-temperature air is effectively improved. The second pipeline is provided with a second expansion joint, the evaporation section of the heat pipe heat exchanger is arranged in the inner space of the second expansion joint, and the damp and hot air is buffered and decelerated at the second expansion joint and fully contacted and cooled with the evaporation section of the heat pipe heat exchanger, so that the heat energy of the damp and hot air is transferred to the heat pipe heat exchanger as far as possible, and the recycling efficiency of the heat energy of the damp and hot air is effectively improved.
3. The connecting point of the hot blast stove and the drying tower and the connecting point of the second pipeline and the drying tower are respectively positioned at two sides of the drying tower, so that hot and dry air passes through the inner space of the drying tower along the diagonal angle to fully contact the wet powder material in the drying tower, and the drying efficiency of the hot and dry air on the wet powder material is improved.
4. The evaporation section of the heat pipe heat exchanger is positioned below the condensation section, so that working liquid condensed by the heat pipe heat exchanger automatically flows into the evaporation section under the action of gravity, the evaporated gaseous working liquid automatically enters the condensation section, and the whole process does not need external power to automatically circulate.
The following further description is made with reference to the accompanying drawings and detailed description.
Drawings
FIG. 1 is a schematic diagram of the connection of the present invention.
In the drawing, 1 is a blower, 2 is a hot blast stove, 3 is a drying tower, 4 is a draught fan, 5 is a heat pipe exchanger, 51 is an evaporation section of the heat pipe exchanger, 52 is a condensation section of the heat pipe exchanger, 6 is a first pipeline, 61 is a first expansion joint, 7 is a second pipeline, and 71 is a second expansion joint.
Detailed Description
In the utility model, the equipment or the component which is not marked with a specific structure or model is generally conventional equipment or component in the chemical field, and the equipment or the component which is not marked with a specific connection mode is generally a conventional connection mode in the chemical field or a connection mode suggested by a manufacturer.
Referring to fig. 1, a flash drying apparatus is shown in an embodiment. The flash evaporation drying device comprises a blower 1, a hot blast stove 2, a drying tower 3, a draught fan 4 and a heat pipe exchanger 5. The top of drying tower 3 is equipped with the discharge gate, and the bottom is equipped with the feed inlet, and seals through the lid respectively. The supply-air outlet of forced draught blower 1 links to each other through the air inlet of first pipeline 6 with hot-blast furnace 2, and the gas outlet of this hot-blast furnace 2 links to each other with the lateral wall bottom of drying tower 3, and is concrete, and the gas outlet of hot-blast furnace links to each other with the left side wall bottom of drying tower, provides dry hot-air to the inside of drying tower, sets up first expansion joint 61 on the first pipeline. The air intake of draught fan 4 passes through second pipeline 7 and links to each other with the lateral wall top of drying tower 3, and is specific, and the upstream end of second pipeline sets up the filter screen, and the right side wall top at the drying tower is connected to the second tube coupling. The evaporation section 51 of the heat pipe heat exchanger is connected with the second pipeline 7, specifically, the evaporation section of the heat pipe heat exchanger is arranged in the inner space of the second expansion joint 71, the condensation section 52 of the heat pipe heat exchanger is connected with the first pipeline 6, specifically, the condensation section of the heat pipe heat exchanger is arranged in the inner space of the first expansion joint 61, and the evaporation section 51 of the heat pipe heat exchanger 5 is located below the condensation section 52.
The working principle of the utility model is that the rated air volume of the flash drying equipment is 8000m3For example,/h, the heat energy of the hot and humid air at 92 ℃ discharged by the drying tower is absorbed by the evaporation section of the heat pipe exchanger, and is transferred to the condensation section of the heat pipe exchanger to release heat, the normal temperature air with the same air quantity is heated by 30 ℃, and the heat saved by calculation is as follows:
q＝8000×1.2×30÷3600
q＝80KW
the amount of natural gas converted into direct heating is 8m3H is used as the reference value. The hot blast stove in the actual equipment is not indirectly heated, and the heating efficiency is not 100 percent, so the actual natural gas quantity is saved more.
Claims (6)
1. A flash evaporation drying device is characterized by comprising an air feeder (1), a hot blast stove (2), a drying tower (3), a draught fan (4) and a heat pipe exchanger (5),
the top of the drying tower (3) is provided with a discharge hole, the bottom is provided with a feed hole, and the discharge hole and the feed hole are respectively sealed by a cover body,
the air supply outlet of the air supply device (1) is connected with the air inlet of the hot blast stove (2) through a first pipeline (6), the air outlet of the hot blast stove (2) is connected with the bottom of the side wall of the drying tower (3),
the air inlet of the induced draft fan (4) is connected with the top of the side wall of the drying tower (3) through a second pipeline (7),
the evaporation section (51) of the heat pipe heat exchanger is connected with the second pipeline (7), and the condensation section (52) of the heat pipe heat exchanger is connected with the first pipeline (6).
2. A flash drying apparatus according to claim 1, characterized in that a first expansion joint (61) is provided on the first pipe (6), and the condensation section (52) of the heat pipe heat exchanger is provided in the inner space of the first expansion joint (61).
3. A flash drying apparatus according to claim 1, wherein a second expansion joint (71) is provided on the second pipe (7), and the evaporation section (51) of the heat pipe heat exchanger is provided in an inner space of the second expansion joint (71).
4. A flash drying apparatus according to claim 1, characterized in that the upstream end of the second pipe (7) is provided with a sieve.
5. A flash drying apparatus according to claim 1, wherein the connection point of the hot blast stove (2) to the drying tower (3) and the connection point of the second pipeline (7) to the drying tower (3) are located on both sides of the drying tower (3), respectively.
6. A flash drying apparatus according to claim 1, characterized in that the evaporation section (51) of the heat pipe heat exchanger (5) is located below the condensation section (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122251900.1U CN215952152U (en) | 2021-09-16 | 2021-09-16 | Flash drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122251900.1U CN215952152U (en) | 2021-09-16 | 2021-09-16 | Flash drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215952152U true CN215952152U (en) | 2022-03-04 |
Family
ID=80426028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122251900.1U Active CN215952152U (en) | 2021-09-16 | 2021-09-16 | Flash drying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215952152U (en) |
-
2021
- 2021-09-16 CN CN202122251900.1U patent/CN215952152U/en active Active
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