CN111380354B - Tail gas circulation system of dryer - Google Patents
Tail gas circulation system of dryer Download PDFInfo
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- CN111380354B CN111380354B CN202010288857.3A CN202010288857A CN111380354B CN 111380354 B CN111380354 B CN 111380354B CN 202010288857 A CN202010288857 A CN 202010288857A CN 111380354 B CN111380354 B CN 111380354B
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- 238000011084 recovery Methods 0.000 claims abstract description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000001816 cooling Methods 0.000 claims abstract description 55
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 239000000428 dust Substances 0.000 claims abstract description 34
- 239000012535 impurity Substances 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims description 19
- 239000000872 buffer Substances 0.000 claims description 18
- 239000007853 buffer solution Substances 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000012546 transfer Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
- F26B25/007—Dust filtering; Exhaust dust filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
- F26B25/006—Separating volatiles, e.g. recovering solvents from dryer exhaust gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
- Drying Of Gases (AREA)
Abstract
The invention belongs to the technical field of tail gas treatment, and discloses a dryer tail gas circulation system, which comprises: the inlet of the dust removal system is communicated with the outlet of the dryer and is used for removing dust in tail gas; the thermal circulation system comprises a cooling heat exchanger and a heating heat exchanger communicated with the cooling heat exchanger, and can transfer heat to the heating heat exchanger; the cooling heat exchanger is communicated with an outlet of the dust removal system and is used for cooling tail gas; the heating heat exchanger is communicated with an inlet of the dryer and is used for heating tail gas entering the dryer; the heat energy recovery system comprises a heat recovery heat exchanger, the heat recovery heat exchanger is communicated between the cooling heat exchanger and the heating heat exchanger, and the heat recovery heat exchanger is used for recovering heat energy in tail gas; and the impurity recovery system is communicated with the cooling heat exchanger and the heat recovery heat exchanger and is used for collecting condensed water in the cooling heat exchanger and the heat recovery heat exchanger. The tail gas circulation system of the dryer can not only avoid dust emission, but also recover water, heat energy and raw materials in tail gas.
Description
Technical Field
The invention relates to the technical field of tail gas treatment, in particular to a tail gas circulation system of a dryer.
Background
At present, in the process of producing the feed in a feed factory, in order to facilitate storage of the feed, deterioration of the feed in the storage process is prevented, quality of the feed is guaranteed, and drying treatment is needed before the feed is packaged.
In general, the fodder is dried mainly by using hot air generated by a dryer. Because the dryer can produce a large amount of high-temperature and high-humidity tail gas when in operation, the tail gas not only carries moisture and odor in feed, but also has a large amount of feed dust and heat energy. At present, the tail gas discharged by a dryer of a feed factory in the prior art is simply treated and is directly discharged to the outside, so that the environment is polluted, and the waste of heat energy, water and feed in the tail gas is caused.
Disclosure of Invention
The invention aims to provide a dryer tail gas circulation system which can not only avoid dust emission, but also recover water, heat energy and raw materials in tail gas.
To achieve the purpose, the invention adopts the following technical scheme:
a dryer tail gas circulation system for treating dryer exhaust gas, comprising:
the inlet of the dust removal system is communicated with the outlet of the dryer and is used for removing dust in tail gas;
the heat circulation system comprises a cooling heat exchanger and a heating heat exchanger, wherein a first inlet of the cooling heat exchanger is communicated with a first outlet of the heating heat exchanger, and a first outlet of the cooling heat exchanger is communicated with a first inlet of the heating heat exchanger; the second inlet of the cooling heat exchanger is communicated with the outlet of the dust removal system and is used for cooling the tail gas; the second outlet of the heating heat exchanger is communicated with the inlet of the dryer and is used for heating the tail gas entering the dryer;
the heat energy recovery system comprises a heat recovery heat exchanger, a first inlet of the heat recovery heat exchanger is communicated with a second outlet of the cooling heat exchanger, a first outlet of the heat recovery heat exchanger is communicated with a second inlet of the heating heat exchanger, and the heat recovery heat exchanger is used for recovering heat energy in the tail gas;
the impurity recovery system is communicated with the cooling heat exchanger and the heat recovery heat exchanger and is used for collecting condensed water in the cooling heat exchanger and the heat recovery heat exchanger.
Preferably, the system further comprises a buffer system, wherein the buffer system comprises a buffer tank, the outlet of the buffer tank is communicated with the inlet of the dryer, and the inlet of the buffer tank is communicated with the downstream of the heating heat exchanger.
Preferably, the buffer system further comprises a plasma generator, and the plasma generator is communicated with the buffer tank.
Preferably, the system further comprises a power system comprising a fan, wherein the fan is communicated with the downstream of the heating heat exchanger and is used for forcing the tail gas to flow to the dryer.
Preferably, the power system further comprises a muffler mounted downstream of the fan.
Preferably, the thermal circulation system further comprises a first water pump, wherein an inlet of the first water pump is communicated with a first outlet of the cooling heat exchanger, and an outlet of the first water pump is communicated with a first inlet of the heating heat exchanger.
Preferably, the heat energy recovery system further comprises a heat pump and a heat-using heat exchanger, wherein a first inlet of the heat pump is communicated with a second outlet of the heat recovery heat exchanger, and a first outlet of the heat pump is communicated with a second inlet of the heat recovery heat exchanger; the first inlet of the heat using heat exchanger is communicated with the second outlet of the heat pump, and the first outlet of the heat using heat exchanger is communicated with the second inlet of the heat pump.
Preferably, the heat energy recovery system further comprises a water cooling tower which is communicated between the first outlet of the heat using heat exchanger and the second inlet of the heat pump.
Preferably, the impurity recovery system includes a mixing tank which is communicated with the cooling heat exchanger and the heat recovery heat exchanger, and the mixing tank is capable of stirring the collected condensed water.
Preferably, the impurity recovery system further comprises a delivery pump, an inner circulation pipeline and an outer exhaust pipeline, wherein an inlet of the inner circulation pipeline and an inlet of the outer exhaust pipeline are both communicated with an outlet of the delivery pump, an inlet of the delivery pump is communicated with the mixing tank, an outlet of the inner circulation pipeline is communicated with the mixing tank, and an outlet of the outer exhaust pipeline is communicated with the conditioner.
The invention has the beneficial effects that:
the invention provides a tail gas circulation system of a dryer, which is used for treating tail gas discharged by the dryer, and comprises a dust removal system, wherein an inlet of the dust removal system is communicated with an outlet of the dryer, so that feed dust in the tail gas discharged by the dryer can be removed and collected, and the recovery of raw materials carried in the tail gas is realized; the cooling heat exchanger of the thermal circulation system in the tail gas circulation system of the dryer can exchange heat with the tail gas, so that moisture in the tail gas is cooled and separated out, and heat in the tail gas is transferred to the heating heat exchanger for heating the tail gas entering the dryer, so that the purpose of removing the moisture carried in the tail gas is realized, the temperature of the inlet air of the dryer is improved, the power consumption of the dryer is reduced, and the production cost is reduced; the heat energy recovery system in the tail gas circulation system of the dryer comprises a heat recovery heat exchanger, wherein a first inlet of the heat recovery heat exchanger is communicated with a second outlet of the cooling heat exchanger, a first outlet of the heat recovery heat exchanger is communicated with a second inlet of the heating heat exchanger, and the heat recovery heat exchanger is used for carrying out heat exchange with tail gas, so that the recovery of heat energy carried by the tail gas is realized.
Drawings
Fig. 1 is a schematic structural diagram of a tail gas circulation system of a dryer according to an embodiment of the present invention.
In the figure:
1. a dust removal system; 11. a pulse cloth bag dust collector; 2. a thermal circulation system; 21. cooling the heat exchanger; 22. heating the heat exchanger; 23. a first water pump; 24. a first valve; 25. a second valve; 3. a heat energy recovery system; 31. a heat recovery heat exchanger; 32. a heat pump; 33. a heat exchanger is used; 34. a water cooling tower; 35. a second water pump; 36. a third valve; 37. a fourth valve; 38. a third water pump; 39. a fifth valve; 310. a sixth valve; 311. a first buffer tank; 4. an impurity recovery system; 41. a mixing tank; 42. a transfer pump; 43. an inner circulation pipe; 431. an internal circulation valve; 44. an outer line; 441. an outer discharge valve; 442. a mass flowmeter; 5. a buffer system; 51. a buffer tank; 52. a plasma generator; 6. a power system; 61. a blower; 62. a muffler; 63. pneumatic butterfly valve; 100. a dryer; 200. and (5) a conditioner.
Detailed Description
In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The invention provides a dryer tail gas circulation system which is used for treating tail gas discharged by a dryer 100, and as shown in fig. 1, the dryer tail gas circulation system comprises a dust removal system 1, a thermal circulation system 2, an impurity recovery system 4, a heat energy recovery system 3, a power system 6 and a buffer system 5.
Specifically, the inlet of the dust removing system 1 is connected to the outlet of the dryer 100, so as to remove dust in the tail gas discharged from the dryer 100. The heat circulation system 2 comprises a cooling heat exchanger 21 and a heating heat exchanger 22, wherein a first inlet of the cooling heat exchanger 21 is communicated with a first outlet of the heating heat exchanger 22, a first outlet of the cooling heat exchanger 21 is communicated with a first inlet of the heating heat exchanger 22, and a second inlet of the cooling heat exchanger 21 is communicated with an outlet of the dust removal system 1, so that the cooling heat exchanger 21 can exchange heat with tail gas to cool and separate out water in the tail gas, and meanwhile, heat of the cooling heat exchanger 21 can be transferred to the heating heat exchanger 22 for utilization, thereby not only achieving the purpose of removing water carried in the tail gas, but also avoiding waste of heat exchange. The second inlet of the heating heat exchanger 22 is communicated with the second outlet of the cooling heat exchanger 21, the second outlet of the heating heat exchanger 22 is communicated with the inlet of the dryer 100, and the heating heat exchanger 22 is used for heating tail gas entering the dryer 100, so that the temperature of the air entering the dryer 100 can be increased, the power consumption of the dryer 100 can be reduced, and the production cost can be reduced.
The heat energy recovery system 3 comprises a heat recovery heat exchanger 31, a first inlet of the heat recovery heat exchanger 31 is communicated with a second outlet of the cooling heat exchanger 21, a first outlet of the heat recovery heat exchanger 31 is communicated with a second inlet of the heating heat exchanger 22, the cooling heat exchanger 21 and the heat recovery heat exchanger 31 can be communicated, tail gas communication between the two is achieved, heat exchange with the tail gas is further achieved, heat carried in the tail gas is recovered, the tail gas is further cooled, water in the tail gas is further separated out, and waste of heat in the tail gas can be avoided.
The impurity recovery system 4 is communicated with the cooling heat exchanger 21 and the heat recovery heat exchanger 31, can collect the condensed water with dust in the cooling heat exchanger 21 and the heat recovery heat exchanger 31, can avoid environmental pollution caused by disordered discharge of the condensed water with dust, and also realizes recovery of moisture and raw material dust in tail gas. The inlet of the power system 6 is connected to the second outlet of the heating heat exchanger 22 for forcing the tail gas in the dryer tail gas circulation system to flow towards the inlet of the dryer 100. The inlet of the buffer system 5 is communicated with the outlet of the power system 6, the outlet of the buffer system 5 is communicated with the inlet of the dryer 100, and the buffer system 5 can buffer the pressure fluctuation of tail gas in the tail gas circulation system of the dryer, so that the system can work stably.
In this embodiment, the dust removing system 1 includes a pulse bag-type dust remover 11, where an inlet of the pulse bag-type dust remover 11 is connected to an outlet of the dryer 100, and an outlet of the pulse bag-type dust remover 11 is connected to a second inlet of the cooling heat exchanger 21, so as to remove raw material dust in tail gas discharged from the dryer 100, and the arrangement of inlet and outlet air channels is compact, the tail gas resistance is small, the energy consumption is low, and the running cost is low.
Preferably, the thermal cycle system 2 further comprises a first water pump 23, an inlet of the first water pump 23 is communicated with a first outlet of the cooling heat exchanger 21, an outlet of the first water pump 23 is communicated with a first inlet of the heating heat exchanger 22, and the first water pump 23 can force circulating water between the cooling heat exchanger 21 and the heating heat exchanger 22 to circulate, and heat obtained by the cooling heat exchanger 21 is transferred into the heating heat exchanger 22. More preferably, the outlet of the first water pump 23 is provided with a first valve 24, and the inlet of the first water pump 23 is provided with a second valve 25, so that the circulating water can be conveniently connected and disconnected, and the first water pump 23 can be conveniently disassembled and assembled.
In this embodiment, the heat energy recovery system 3 further includes a heat pump 32 and a heat-using heat exchanger 33, where a first inlet of the heat pump 32 is connected to a second outlet of the heat-recovering heat exchanger 31, a first outlet of the heat pump 32 is connected to a second inlet of the heat-recovering heat exchanger 31, a first inlet of the heat-using heat exchanger 33 is connected to a second outlet of the heat pump 32, a first outlet of the heat-using heat exchanger 33 is connected to a second inlet of the heat pump 32, the heat-using heat exchanger 33 is used for heating heat-using equipment in the production process, and the heat pump 32 can transfer heat energy of the heat-recovering heat exchanger 31 to the heat-using heat exchanger 33, so that heat energy recovered from tail gas in the production process can be used conveniently. Preferably, the heat energy recovery system 3 further includes a second water pump 35, an inlet of the second water pump 35 is connected to a first outlet of the heat pump 32, and an outlet of the second water pump 35 is connected to a second inlet of the heat recovery heat exchanger 31, so that smooth flow of circulating water between the heat recovery heat exchanger 31 and the heat pump 32 can be ensured, and heat energy recovered by the heat recovery heat exchanger 31 can be smoothly transferred to the heat pump 32. Specifically, the inlet of the second water pump 35 is provided with a third valve 36, and the outlet of the second water pump 35 is provided with a fourth valve 37, so that the connection and disconnection of circulating water can be conveniently realized, and the disassembly and assembly of the second water pump 35 are also convenient.
Preferably, the heat energy recovery system 3 further comprises a water cooling tower 34, wherein the water cooling tower 34 is communicated between the first outlet of the heat using exchanger 33 and the second inlet of the heat pump 32, and is used for dissipating the surplus heat energy which is not used by the heat equipment in the production process. More preferably, the heat energy recovery system 3 further comprises a third water pump 38, wherein an inlet of the third water pump 38 is communicated with an outlet of the cooling tower 34, and an outlet of the third water pump 38 is communicated with a second inlet of the heat pump 32, so that smooth circulation of circulating water among the heat pump 32, the heat exchanger 33 and the cooling tower 34 can be ensured. Specifically, the fifth valve 39 is disposed at the inlet of the third water pump 38, and the sixth valve 310 is disposed at the outlet of the third water pump 38, so that the circulating water can be conveniently connected and disconnected, and the third water pump 38 can be conveniently disassembled and assembled. In this embodiment, the heat energy recovery system 3 further includes a first buffer tank 311, where the first buffer tank 311 is connected between the second outlet of the heat pump 32 and the first inlet of the heat exchanger 33, so as to buffer pressure fluctuation of the circulating water, which is beneficial to ensuring stable operation of the system.
In the present embodiment, the impurity recovery system 4 includes the mixing tank 41, and the mixing tank 41 is communicated with the cooling heat exchanger 21 and the heat recovery heat exchanger 31, and can collect condensed water containing dust in the cooling heat exchanger 21 and the heat recovery heat exchanger 31. Preferably, hot water and steam can be introduced into the mixing tank 41 to facilitate the treatment of the condensed water containing dust in the mixing tank 41. Specifically, a stirring blade for stirring the liquid in the mixing tank 41 and a weighing element for weighing the amounts of the hot water and the water vapor added are provided in the mixing tank 41.
More preferably, the impurity recovery system 4 further comprises a delivery pump 42, an inner circulation pipe 43 and an outer discharge pipe 44, wherein an inlet of the delivery pump 42 is communicated with the bottom of the mixing tank 41, an inlet of the inner circulation pipe 43 and an inlet of the outer discharge pipe 44 are both communicated with an outlet of the delivery pump 42, an outlet of the inner circulation pipe 43 is communicated with the mixing tank 41, and an outlet of the outer discharge pipe 44 is communicated with the conditioner 200. Preferably, the centrifugal pump is selected as the delivery pump 42, so that the operation is stable, the noise is low, the occupied space is small, and the maintenance is convenient. Specifically, the inner circulation pipe 43 is provided with an inner circulation valve 431, the outer pipe 44 is provided with an outer discharge valve 441, and if the inner circulation valve 431 is opened and the outer discharge valve 441 is closed, the delivery pump 42 delivers condensed water containing dust to circulate inside the mixing tank 41; when the inner circulation valve 431 is closed and the outer discharge valve 441 is opened, the transfer pump 42 transfers the condensed water containing dust to the conditioner 200 for treatment. Further, a mass flow meter 442 is provided upstream of the discharge valve 441 for measuring the amount of condensed water containing dust discharged into the conditioner 200.
Preferably, the power system 6 comprises a fan 61, and an inlet of the fan 61 is connected to the second outlet of the heating heat exchanger 22, so as to force the exhaust gas to flow downstream, so as to ensure the circulation of the exhaust gas. More preferably, the power system 6 further includes a muffler 62, and the muffler 62 is installed at the outlet of the blower 61, so as to reduce noise generated when the blower 61 is operated. Further, a pneumatic butterfly valve 63 is further disposed at the inlet of the blower 61, one end of the pneumatic butterfly valve 63 is connected to the inlet of the blower 61, and the other end is connected to the outside air, so as to supplement air into the tail gas circulation system of the dryer, and ensure the amount of gas in the tail gas circulation system of the dryer.
In this embodiment, the buffer system 5 includes a buffer tank 51, an outlet of the buffer tank 51 is connected to an inlet of the dryer 100, and an inlet of the buffer tank 51 is connected to an outlet of the fan 61, so that fluctuation of tail gas pressure in the tail gas circulation system of the dryer can be buffered, and stable operation of the system is ensured. Preferably, the buffer system 5 further comprises a plasma generator 52, the plasma generator 52 is communicated with the buffer tank 51, so that generated negative ions can be introduced into the tail gas, the concentration of odor in the tail gas circulation system of the dryer is reduced, the deodorized tail gas is introduced into the dryer 100, and the aggregation of odor in the tail gas circulation system of the dryer is avoided.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (8)
1. A dryer tail gas circulation system for treating tail gas exhausted from a dryer (100), comprising:
the inlet of the dust removal system (1) is communicated with the outlet of the dryer (100) and is used for removing dust in tail gas;
the heat circulation system (2), wherein the heat circulation system (2) comprises a cooling heat exchanger (21) and a heating heat exchanger (22), a first inlet of the cooling heat exchanger (21) is communicated with a first outlet of the heating heat exchanger (22), and a first outlet of the cooling heat exchanger (21) is communicated with a first inlet of the heating heat exchanger (22); the second inlet of the cooling heat exchanger (21) is communicated with the outlet of the dust removal system (1) and is used for cooling the tail gas; a second outlet of the heating heat exchanger (22) is communicated with an inlet of the dryer (100) and is used for heating the tail gas entering the dryer (100);
a heat energy recovery system (3), the heat energy recovery system (3) comprising a heat recovery heat exchanger (31), a first inlet of the heat recovery heat exchanger (31) being communicated with a second outlet of the cooling heat exchanger (21), a first outlet of the heat recovery heat exchanger (31) being communicated with a second inlet of the heating heat exchanger (22), the heat recovery heat exchanger (31) being for recovering heat energy in the tail gas;
an impurity recovery system (4), the impurity recovery system (4) being in communication with the cooling heat exchanger (21) and the heat recovery heat exchanger (31) for collecting condensed water in the cooling heat exchanger (21) and the heat recovery heat exchanger (31);
the thermal circulation system (2) further comprises a first water pump (23), wherein an inlet of the first water pump (23) is communicated with a first outlet of the cooling heat exchanger (21), and an outlet of the first water pump (23) is communicated with a first inlet of the heating heat exchanger (22);
the impurity recovery system (4) comprises a mixing tank (41), the mixing tank (41) is communicated with the cooling heat exchanger (21) and the heat recovery heat exchanger (31), and the mixing tank (41) can stir collected condensed water.
2. The dryer tail gas circulation system according to claim 1, further comprising a buffer system (5), the buffer system (5) comprising a buffer tank (51), an outlet of the buffer tank (51) being in communication with an inlet of the dryer (100), an inlet of the buffer tank (51) being in communication downstream of the heating heat exchanger (22).
3. The dryer tail gas circulation system according to claim 2, characterized in that the buffer system (5) further comprises a plasma generator (52), the plasma generator (52) being in communication with the buffer tank (51).
4. The dryer tail gas circulation system according to claim 1, further comprising a power system (6), the power system (6) comprising a fan (61), the fan (61) being in communication downstream of the heating heat exchanger (22) for forcing the tail gas to flow towards the dryer (100).
5. The dryer tail gas recirculation system according to claim 4, characterized in that the power system (6) further comprises a muffler (62), the muffler (62) being mounted downstream of the fan (61).
6. The dryer tail gas circulation system according to claim 1, characterized in that the heat energy recovery system (3) further comprises a heat pump (32) and a heat exchanger (33), a first inlet of the heat pump (32) being in communication with a second outlet of the heat recovery heat exchanger (31), a first outlet of the heat pump (32) being in communication with a second inlet of the heat recovery heat exchanger (31); the first inlet of the heat utilization heat exchanger (33) is communicated with the second outlet of the heat pump (32), and the first outlet of the heat utilization heat exchanger (33) is communicated with the second inlet of the heat pump (32).
7. The dryer tail gas circulation system according to claim 6, characterized in that the heat energy recovery system (3) further comprises a water cooling tower (34), the water cooling tower (34) being in communication between the first outlet of the heat using heat exchanger (33) and the second inlet of the heat pump (32).
8. The dryer tail gas circulation system according to claim 1, wherein the impurity recovery system (4) further comprises a conveying pump (42), an inner circulation pipeline (43) and an outer discharge pipeline (44), wherein an inlet of the inner circulation pipeline (43) and an inlet of the outer discharge pipeline (44) are both communicated with an outlet of the conveying pump (42), an inlet of the conveying pump (42) is communicated with the mixing tank (41), an outlet of the inner circulation pipeline (43) is communicated with the mixing tank (41), and an outlet of the outer discharge pipeline (44) is communicated with the conditioner (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010288857.3A CN111380354B (en) | 2020-04-14 | 2020-04-14 | Tail gas circulation system of dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010288857.3A CN111380354B (en) | 2020-04-14 | 2020-04-14 | Tail gas circulation system of dryer |
Publications (2)
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012137201A (en) * | 2010-12-24 | 2012-07-19 | Mitsubishi Heavy Ind Ltd | Heat pump system for drying equipment, and drying equipment with the same, and method of controlling heat pump system for drying equipment |
| CN103322724A (en) * | 2012-03-19 | 2013-09-25 | 北京科技大学 | Heat pump circulating system, drying system, and respective method |
| CN104110941A (en) * | 2014-06-10 | 2014-10-22 | 浙江工业大学 | Partial tail gas circulation fluid bed drying method and equipment |
| CN204007045U (en) * | 2014-08-08 | 2014-12-10 | 天津商业大学 | Biogas Analysis of Heat Pump Drying System |
| CN204027214U (en) * | 2014-06-30 | 2014-12-17 | 广东都灵新能源科技有限公司 | Many thermals source are brought the barn system of wind dehumidification by condensation and independent dehumidification device into |
| CN204388548U (en) * | 2015-01-13 | 2015-06-10 | 天津商业大学 | The gas-powered Analysis of Heat Pump Drying System in a kind of natural pond |
| CN104710094A (en) * | 2013-12-13 | 2015-06-17 | 天华化工机械及自动化研究设计院有限公司 | Printing and dyeing sludge drying method and apparatus thereof |
| CN107473562A (en) * | 2017-10-09 | 2017-12-15 | 利得环境科技（北京）有限公司 | Utilize the sludge drying system and sludge drying method of used heat flue gas |
| CN110131997A (en) * | 2019-06-13 | 2019-08-16 | 山东博特瑞节能环保科技有限公司 | Coal slime dries the exhaust heat stepped recycling system of lack of gas |
| CN110686502A (en) * | 2019-09-30 | 2020-01-14 | 江苏大学 | Hot air drying system and method for heat recovery by using heat pump as heat source |
| CN212339900U (en) * | 2020-04-14 | 2021-01-12 | 磐石自动化系统（深圳）有限公司 | Dryer tail gas circulation system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT413080B (en) * | 2004-04-29 | 2005-11-15 | Arbeiter Peter | DRYING DEVICE |
-
2020
- 2020-04-14 CN CN202010288857.3A patent/CN111380354B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012137201A (en) * | 2010-12-24 | 2012-07-19 | Mitsubishi Heavy Ind Ltd | Heat pump system for drying equipment, and drying equipment with the same, and method of controlling heat pump system for drying equipment |
| CN103322724A (en) * | 2012-03-19 | 2013-09-25 | 北京科技大学 | Heat pump circulating system, drying system, and respective method |
| CN104710094A (en) * | 2013-12-13 | 2015-06-17 | 天华化工机械及自动化研究设计院有限公司 | Printing and dyeing sludge drying method and apparatus thereof |
| CN104110941A (en) * | 2014-06-10 | 2014-10-22 | 浙江工业大学 | Partial tail gas circulation fluid bed drying method and equipment |
| CN204027214U (en) * | 2014-06-30 | 2014-12-17 | 广东都灵新能源科技有限公司 | Many thermals source are brought the barn system of wind dehumidification by condensation and independent dehumidification device into |
| CN204007045U (en) * | 2014-08-08 | 2014-12-10 | 天津商业大学 | Biogas Analysis of Heat Pump Drying System |
| CN204388548U (en) * | 2015-01-13 | 2015-06-10 | 天津商业大学 | The gas-powered Analysis of Heat Pump Drying System in a kind of natural pond |
| CN107473562A (en) * | 2017-10-09 | 2017-12-15 | 利得环境科技（北京）有限公司 | Utilize the sludge drying system and sludge drying method of used heat flue gas |
| CN110131997A (en) * | 2019-06-13 | 2019-08-16 | 山东博特瑞节能环保科技有限公司 | Coal slime dries the exhaust heat stepped recycling system of lack of gas |
| CN110686502A (en) * | 2019-09-30 | 2020-01-14 | 江苏大学 | Hot air drying system and method for heat recovery by using heat pump as heat source |
| CN212339900U (en) * | 2020-04-14 | 2021-01-12 | 磐石自动化系统（深圳）有限公司 | Dryer tail gas circulation system |
Non-Patent Citations (1)
| Title |
|---|
| 张明.煤制合成天然气技术与应用.化学工业出版社,2017,(第1版),436. * |
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