CN107462063A - Heat pump drying system and furnace drying method - Google Patents
Heat pump drying system and furnace drying method Download PDFInfo
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- CN107462063A CN107462063A CN201710720046.4A CN201710720046A CN107462063A CN 107462063 A CN107462063 A CN 107462063A CN 201710720046 A CN201710720046 A CN 201710720046A CN 107462063 A CN107462063 A CN 107462063A
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- 238000001035 drying Methods 0.000 title claims abstract description 176
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 94
- 238000001816 cooling Methods 0.000 claims abstract description 61
- 241000894006 Bacteria Species 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 10
- 238000000855 fermentation Methods 0.000 claims description 9
- 230000004151 fermentation Effects 0.000 claims description 9
- 238000009833 condensation Methods 0.000 claims description 8
- 230000005494 condensation Effects 0.000 claims description 8
- 238000001704 evaporation Methods 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 6
- 241001148470 aerobic bacillus Species 0.000 claims description 3
- 238000010025 steaming Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000000498 cooling water Substances 0.000 description 10
- 239000007788 liquid Substances 0.000 description 8
- 230000005611 electricity Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 235000019733 Fish meal Nutrition 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004467 fishmeal Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Drying Of Solid Materials (AREA)
Abstract
A kind of power consumption of present invention offer is low, heat pump drying system and furnace drying method caused by free from extraneous odour, including drying oven（20）, source pump one, with the water cooling pipeline of drying oven UNICOM（11）, the drying oven（20）On be additionally provided with wind exhausting outlet and air draft entrance, the drying oven（20）Wind exhausting outlet be connected by the air draft entrance of exhaust pipeline and drying oven, in the exhaust pipeline and/or at wind exhausting outlet and/or air draft porch is provided with blower fan, the evaporator two in the source pump one（10）It is arranged in exhaust pipeline.Power consumption of the present invention is low, free from extraneous odour produces, rate of drying is fast, energy recycles.
Description
Technical field
The invention belongs to heat pump drying field, specifically a kind of heat pump drying system and furnace drying method.
Background technology
At present, material desiccation is mainly dried with hot air tunnel formula, dried, based on electrical heating heated-air drying, however, existing baking
Problems be present in dry mode：
1st, in drying course, high energy consumption, the utilization rate of electric energy only has 80% or so；
2nd, it is seriously polluted, in use, using boiler, natural gas etc. as thermal source, produce substantial amounts of particulate emissions and arrive
In air, environment is caused seriously to pollute；
3rd, not environmentally, in original drying course, raw material are exposed in atmosphere, and during dehumidifying, peculiar smell is serious.
The content of the invention
A kind of power consumption of present invention offer is low, heat pump drying system and furnace drying method caused by free from extraneous odour.
The present invention technical solution be：
A kind of heat pump drying system, it is characterised in that：Including drying oven 20, source pump one, the water cooling tube with drying oven UNICOM
Road 11, wind exhausting outlet and air draft entrance is additionally provided with the drying oven 20, the wind exhausting outlet of the drying oven 20 passes through air draft
The air draft entrance of pipeline and drying oven is connected, and in the exhaust pipeline and/or at wind exhausting outlet and/or air draft porch is set
There is a blower fan, the evaporator 2 10 in the source pump one is arranged in exhaust pipeline.
Preferably, in order to further improve heat utilization rate, above-mentioned heat pump drying system also includes Total heat exchange core body 19,
The wind exhausting outlet of the drying oven 20 is connected with the A tunnel inlets of Total heat exchange core body 19, the A air channels of Total heat exchange core body 19
Export and be connected with the B tunnel inlets of Total heat exchange core body 19, the evaporator 2 10 is arranged at the A wind of Total heat exchange core body 19
Road is exported between the B tunnel inlets of Total heat exchange core body 19, the B ducting outlets of the Total heat exchange core body 19 and drying oven
Air draft entrance is connected.
Preferably, above-mentioned heat pump drying system also includes the vavuum pump 13 being connected with water cooling pipeline 11.
Preferably, above-mentioned source pump one also includes evaporator 1, and the evaporator 1 is connected in parallel on evaporator 2 10
Both ends, the water-cooling channel UNICOM of the water cooling pipeline 11 and the evaporator 1 of source pump one；Or the heat pump drying system
Also include source pump three, the water-cooling channel UNICOM of the water cooling pipeline 11 and the evaporator 1 of source pump three.
Preferably, above-mentioned heat pump drying system also includes the heating plant that thermal source is provided to drying oven 20, the heat supply dress
Put the fluid media (medium) including heat cycles pipeline 22, in heat cycles pipeline 22, be serially connected in heat cycles pipeline 22
The thermal source of circulating pump 18 and heat cycles pipeline 22, the thermal source of the heat cycles pipeline 22 are the condenser of source pump one
One 2 and/or the electric additional thermal on heat cycles pipeline 22.
Preferably, the storage tank 12 of closing is also associated between above-mentioned water cooling pipeline 11 and vavuum pump 13, storage tank 12 divides
For two chambers, chamber one connects vavuum pump 13 and water cooling pipeline 11, chamber two are connected by pipeline one with air, on pipeline one
Valve 1 is provided with, chamber two is connected by discharge pipe line with air, and valve 3 17, valve 1 are provided with discharge pipe line
Also it is connected close to one end of storage tank by pipeline two with chamber one, valve 2 15 is installed on pipeline two.
Preferably, above-mentioned source pump one includes compressor 1, condenser 1, heat exchanger 1, evaporator 1, evaporator
2 10, throttling arrangement 1, throttling arrangement 25, the pressure high temperature hot gas that the compressor 1 is discharged after condenser 1 by being divided into
Two-way, the M passages all the way through throttling arrangement 1, heat exchanger 1 return to compressor 1, N channel of the another way through heat exchanger 1,
Compressor 1 is returned to after throttling arrangement 25, evaporator 1, the M passages and N channel of the heat exchanger 1 carry out heat exchange, evaporation
Device 1 and evaporator 2 10 are in parallel；Or the source pump one includes compressor 1, condenser 1, heat exchanger 1, evaporation
Device 1, evaporator 2 10, throttling arrangement 1, throttling arrangement 25, the pressure high temperature hot gas that the compressor 1 is discharged pass through cold
It is divided into two-way after condenser 1, the M passages through heat exchanger 1, throttling arrangement 1 return to compressor 1 all the way, and another way is through throttling
Compressor 1 is returned to after device 25, the N channel of heat exchanger 1, evaporator 1, the M passages and N channel of the heat exchanger 1 enter
Row heat exchange, evaporator 1 and evaporator 2 10 are in parallel.
Preferably, above-mentioned heat pump drying system also includes at least one set of source pump two, and the source pump two includes pressure
Contracting machine 1, condenser 1, heat exchanger 1, evaporator 1, throttling arrangement 1, throttling arrangement 25, what the compressor 1 was discharged
For pressure high temperature hot gas by being divided into two-way after condenser 1, the M passages all the way through throttling arrangement 1, heat exchanger 1 return to pressure
Contracting machine 1, another way return to compressor 1, the heat exchanger after the N channel of heat exchanger 1, throttling arrangement 25, evaporator 1
One 4 M passages and N channel carries out heat exchange；Or the source pump two includes compressor 1, condenser 1, heat exchanger one
4th, evaporator 1, throttling arrangement 1, throttling arrangement 25, the pressure high temperature hot gas that the compressor 1 is discharged pass through condenser one
It is divided into two-way after 2, the M passages through heat exchanger 1, throttling arrangement 1 return to compressor 1 all the way, and another way is through throttling arrangement two
5th, compressor 1 is returned to after the N channel of heat exchanger 1, evaporator 1, the M passages and N channel of the heat exchanger 1 carry out hot friendship
Change.
Heat pump drying method based on any one above-mentioned structure, it is characterised in that：Comprise the following steps：
1】Material is sent into drying oven；
2】Give drying stove heat；Water cooling pipeline 11 is opened, closes exhaust pipeline；When having vavuum pump, vavuum pump is opened；From drying oven
The water cooled pipeline 11 of steam of discharge is discharged；
3】Water cooling pipeline 11 is closed, opens blower fan and exhaust pipeline, opens the evaporator two in source pump one, from drying fire grate
The steam gone out is condensed through evaporator two and discharged, until drying terminates.
Preferably, biological bacteria, step 2 are added with above-mentioned drying oven】In, the fermentation temperature of biological bacteria is heated to drying oven
After degree, into step 3】.The biological bacteria is anaerobic bacteria either aerobic bacteria or other kinds of bacterium, when biological bacteria is aerobic bacteria
When, step 3】Need to be passed through oxygen in toward drying oven.
It is an advantage of the invention that：
（One）Drying material whole process is in confined space, and free from extraneous odour produces；First drying course consumes a small amount of electric energy as baking
The initial drying energy of dry stove activates biological bacteria, and second drying course is available without additionally providing heat to drying oven
Heat caused by biological bacteria recycles as drying thermal source, energy, reduces energy consumption, and power consumption is low.
（Two）Total heat exchange core body, pre- cooling effect is on the one hand played, on the other hand heat energy is reclaimed, reduce heat
Loss.
（Three）When water cooling pipeline connects vavuum pump, drying oven is dried for negative pressure of vacuum, reduces the boiling point of drying oven reclaimed water,
Water can seethe with excitement at 50 DEG C, and compressor condensation temperature is low, compressor consuming electric power is few, in compressor normal operating condition, steam
Temperature is sent out at 10 DEG C, condensation temperature is at 80 DEG C, power 12KW, and condensation temperature is at 60 DEG C, power 8KW, in this feelings
4.5kg moisture often can be removed using 1kw.h under condition, Energy Efficiency Ratio is high, and power consumption is low.
（Four）The one side of evaporator one of source pump one cools to steam realizes dehumidifying, and one side source pump is dried for a pair
The heat of dry gas is reclaimed, and for the heating of drying oven, saves energy consumption.
（Five）After drying produces gas, gas is fed directly into condenser one, generates aqueous water, rate of drying
It hurry up；Condensation water tank can ensure the vacuum of whole system no matter when storing water or discharging water.
（Six）The structure of source pump, can make at a lower temperature also can normal operation in whole system.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the vacuum heat pump drying system of the embodiment of the present invention six.
Fig. 2 is the connection diagram of the source pump two of the embodiment of the present invention six.
Fig. 3 is the connection diagram of the source pump one of the embodiment of the present invention six.
Embodiment
The evaporator one that occurs in following examples, evaporator two, evaporator three, source pump one, source pump are second-class
The statement of addend word after noun, is distinguished according to installation site, and the limitation of non-logarithmic amount.
Embodiment one
Heat pump drying system, including drying oven 20, source pump one, the water cooling pipeline 11 with drying oven UNICOM, the drying oven
Wind exhausting outlet and air draft entrance are additionally provided with 20, the wind exhausting outlet of the drying oven 20 passes through exhaust pipeline and the row of drying oven
Wind entrance is connected, and in the exhaust pipeline and/or at wind exhausting outlet and/or air draft porch is provided with blower fan.
Source pump one in the present embodiment can use the source pump of simplest structure, i.e., compressor, condenser one,
Evaporator 2 10, throttling arrangement source pump in series, in the source pump one each structure and annexation for it is existing into
Cooking technique, it will not be described here.Evaporator 2 10 in the source pump one is arranged in exhaust pipeline.
In the present embodiment, heat pump drying method, comprise the following steps：
1】Material is sent into drying oven 20；
2】Drying stove heat is given, is not limited to which kind of mode of heating used here；Water cooling pipeline 11 is opened, closes exhaust pipeline；Dry
The water cooled pipeline 11 of steam that dry fire grate goes out is discharged；This is first drying course.
3】Water cooling pipeline 11 is closed, opens exhaust pipeline, opens blower fan and source pump one, the steam warp of drying oven discharge
Evaporator two in exhaust pipeline is condensed into water discharge, until drying terminates.This is second drying course.
Preferably, biological bacteria is added with the drying oven, the fermentation temperature of biological bacteria is 50-85 DEG C, step 2】In, give
After drying oven is heated to the fermentation temperature of biological bacteria, into step 3】, drying oven is used as by the use of heat caused by biological bacteria itself
Heat required for middle material evaporation.If without using biological bacteria, the directly drying of first drying course also can be used directly and terminate.
Embodiment two
Heat pump drying system, including drying oven 20, source pump one, water cooling pipeline 11, Total heat exchange core with drying oven UNICOM
Body 19, is additionally provided with wind exhausting outlet and air draft entrance on the drying oven 20, in the exhaust pipeline and/or at wind exhausting outlet
And/or air draft porch is provided with blower fan.
Total heat exchange core body 19 has two independent air channels.The wind exhausting outlet of the drying oven 20 and Total heat exchange core body
19 A tunnel inlets are connected by exhaust pipeline 1, A ducting outlets and the Total heat exchange core body of Total heat exchange core body 19
19 B tunnel inlets are connected by pipeline, the evaporator 2 10 be arranged at the A ducting outlets of Total heat exchange core body 19 with it is complete
Between the B tunnel inlets of heat exchanging core 19, the B ducting outlets of the Total heat exchange core body 19 and the air draft entrance of drying oven lead to
Exhaust pipeline 2 212 is crossed to be connected.
In the present embodiment, heat pump drying method, comprise the following steps：
1】Material is sent into drying oven 20；
2】Drying stove heat is given, is not limited to which kind of mode of heating used here；Water cooling pipeline 11 is opened, closes exhaust pipeline；Dry
The water cooled pipeline 11 of steam that dry fire grate goes out is discharged；This is first drying course.
3】Water cooling pipeline 11 is closed, opens exhaust pipeline, blower fan, opens source pump one, the steam of drying oven discharge is first
A air channels through Total heat exchange core body 19 in exhaust pipeline cool in advance, then by the fast cooling of evaporator two so that in air
Condensate moisture is discharged into water, and at this time air becomes to dry, but temperature is very low, again by Total heat exchange core body 19
Heating cools in advance to the humid air in A air channels simultaneously in advance in B air channels, it is pre- that the air being dehumidified flows through Total heat exchange core body A air channels
Cooling, the cool-down dehumidification efficiency of evaporator two can be made to improve at least 30%, while pre- the distributed heat that cools is again by Total heat exchange
Core body B reclaims in air channel at least 50% heat again, and heat is reclaimed for idle；Until drying terminates；This, which is second, dried
Journey.
Preferably, biological bacteria, step 2 are added with the drying oven】In, the fermentation temperature of biological bacteria is heated to drying oven
After degree, into step 3】.
Embodiment three
On the basis of embodiment one or embodiment two, the heat pump drying system is also true including being connected with water cooling pipeline 11
Empty pump 13, the vacuum of the drying oven 20 is below -0.08MPa, and whole system is changed into vacuum heat pump drying system.
In the case where vacuum is -0.08MPa, water can seethe with excitement at 50 DEG C.Using vavuum pump, can not only reduce
The boiling point of water, heat when saving original state needed for heating and drying furnace, moreover it is possible to the consuming electric power of compressor is reduced, moreover, drying
Process is carried out under closed environment, and free from extraneous odour produces, and environmental protection, meets national requirements for environmental protection.
Specifically, the vavuum pump can select water-ring vacuum pump or screw vacuum pump.When selection liquid-ring type vacuum
During pump, cooling water tank 14 is connected between the inlet of the water-ring vacuum pump and the liquid outlet of water-ring vacuum pump；Enter one
Step, the air-cooled condensation for cooling is additionally provided with the pipeline between the liquid outlet and cooling water tank 14 of water-ring vacuum pump
Device；Further, temperature measuring head is provided with cooling water tank 14, discharge opening and water inlet are additionally provided with cooling water tank 14.It is cold
Water is but housed, temperature measuring head is used for the temperature acquisition of cooling water tank 14, when temperature is optionally greater than " cooling water under the primary condition of water tank 14
During such as 35 ° of the temperature upper limit of case 14 ", the discharge opening of cooling water tank 14 is opened, and is then shut off discharge opening, opens water inlet；When
Temperature is less than such as 30 degree of " being limited at a temperature of cooling water tank 14 " is equal to, then the water inlet of cooling water tank 14 is closed.Cooling water tank
Set, it is ensured that water-ring vacuum pump works under preference temperature, to make vacuum reach perfect condition.
Preferably, the storage tank 12 for gas-liquid separation is also associated between the water cooling pipeline 11 and vavuum pump 13, is stored up
Water tank 12 divides connects vavuum pump 13 and water cooling pipeline 11 for upper and lower two chambers, chamber one, and responsible collection flows through the water of evaporator
Vapour, chamber two are connected by pipeline one with air, and valve 1 is provided with pipeline one, and chamber two passes through discharge pipe line and air
It is connected, valve 3 17 is provided with discharge pipe line, valve 1 is also connected close to one end of storage tank by pipeline two and chamber one
Connect, valve 2 15 is installed on pipeline two, it is preferred that be also equipped with water level detection gauge on chamber two.During work, valve 2 15
Open, valve 1 and valve 3 17 are closed, upper and lower chamber UNICOM, the liquid in the gas-liquid mixture to come from water cooling pipeline 11
Chamber two is flowed to by valve 2 15, now whole water cooling pipeline 11 can still keep vacuum state, when the water of chamber two reaches
During to specified water level, water level detection gauge output signal, control valve 2 15 is closed, and valve 1 and valve 3 17 are opened, now,
Whole water cooling pipeline 11 also can still keep vacuum state, not interfere with the progress of drying work.
In the present embodiment, heat pump drying method, comprise the following steps：
1】Material is sent into drying oven 20；
2】Drying stove heat is given, is not limited to which kind of mode of heating used here；Water cooling pipeline 11 is opened, exhaust pipeline is closed, beats
Vavuum pump is driven, is vacuumized, the water cooled pipeline 11 of steam of drying oven discharge is discharged, when steam enters storage tank 12, also
Gas-liquid mixture phase is partially in, storage tank is divided into two layers up and down, and aqueous water directly flow to chamber two from chamber one, works as chamber
When two water reaches specified water level, water level detection gauge output signal, control valve 2 15 is closed, valve 1 and 3 17 dozens, valve
Open, the water outflow of chamber two.This is first drying course.
3】Water cooling pipeline 11 and vavuum pump are closed, opens exhaust pipeline, blower fan, opens source pump one, until drying knot
Beam.This is second drying course.
Example IV
On the basis of embodiment one either embodiment two or embodiment three, in order that the steam in water cooling pipeline can fast quickly cooling
It is solidifying, water cooling tube road 11 can be made to be exchanged heat with another evaporator, this evaporator can be connected in parallel in source pump one
The evaporator 1 at the both ends of evaporator 2 10, the water-cooling channel of the water cooling pipeline 11 and the evaporator 1 of source pump one join
It is logical.
Or a complete source pump three is separately set, source pump three includes condenser, evaporator one, the water cooling tube
Road 11 and the water-cooling channel UNICOM of the evaporator 1 of source pump three.
When by the way of the both ends parallel evaporator 1 in evaporator 2 10, heat pump drying method, including following step
Suddenly：
1】Material is sent into drying oven；Preferably, biological bacteria is added with the drying oven；
2】Give drying stove heat；Water cooling pipeline 11 is opened, closes exhaust pipeline；When having vavuum pump, vavuum pump is opened；Start heat pump
Unit one, evaporator one is opened, close evaporator two；Discharged from the water cooled pipeline 11 of steam of drying oven discharge, and by steaming
Hair device one is condensed into water discharge；After being heated to the fermentation temperature of biological bacteria to drying oven, into step 3】.This is first drying
Process.
3】Water cooling pipeline 11 is closed, opens exhaust pipeline, opens the evaporator two of source pump one, closes source pump one
Evaporator one, until drying terminates.This is second drying course.
During using source pump three, heat pump drying method, comprise the following steps：
1】Material is sent into drying oven；Preferably, biological bacteria is added with the drying oven；
2】Give drying stove heat；Water cooling pipeline 11 is opened, closes exhaust pipeline；When having vavuum pump, vavuum pump is opened；From drying oven
The water cooled pipeline 11 of steam of discharge is discharged；Start source pump three, open evaporator one, close source pump one；To drying
Stove heat is to after the fermentation temperature of biological bacteria, into step 3】.
3】Water cooling pipeline 11 is closed, opens exhaust pipeline, blower fan, opens the evaporator two of source pump one, closes heat pump
The evaporator one of unit three, until drying terminates.
Preferably, it is connected after water cooling pipeline 11 exchanges heat with evaporator 1 by condenser 2 25 with storage tank 12, condenser
2 25 can select air-cooled condenser, plate type heat exchanger, double-tube heat exchanger etc., and condenser two is used for the liquid not cooled down completely
Water is cooled, and reclaims heat, improves Energy Efficiency Ratio.
Embodiment five
On the basis of embodiment one either embodiment two or embodiment three or example IV, during heating and drying furnace, use
Heating plant include but is not limited to following structure：Heating plant includes heat cycles pipeline 22, positioned at heat cycles pipeline 22
In fluid media (medium), the circulating pump 18 that is serially connected in heat cycles pipeline 22 and the device to fluid media (medium) heating, Ye Jijia
The thermal source of thermal cycle pipeline 22.
Device to fluid media (medium) heating can be the additional thermal of electricity, and the additional thermal of electricity is located at heat cycles pipeline 22
On, the device to fluid media (medium) heating can also be the condenser one of source pump one, heat cycles pipeline 22 and source pump
One condenser one is exchanged heat, the heat of absorptive condenser one.Preferably, both can exist simultaneously, the additional thermal of electricity
Quickly it can be heated up to drying oven, there is provided the initial heat of drying oven, the heat that a pair of water cooling pipelines 11 of condenser give out enter
Row recovery, reduces heat energy loss.
A part for heat cycles pipeline 22 is located in drying oven 20, for providing heat to drying oven 20.Specifically, dry
Agitating device is provided with dry stove 20, the central shaft of agitating device is quill shaft, and quill shaft can be used as heat cycles pipeline 22
A part of pipeline, pipeline can also be laid out in addition in other parts.Fluid media (medium) in heat cycles pipeline 22 is thermal conductivity
The good liquid of energy.
Temperature measuring head and vacuum meter are provided with drying oven.
In the present embodiment, heat pump drying method, comprise the following steps：
1】Material is sent into drying oven；Preferably, biological bacteria is added with the drying oven；
2】Open circulating pump 18；The additional thermal of electricity is opened, is heated to medium, so as to give drying stove heat；Open water cooling pipeline
11, exhaust pipeline is closed, when having vavuum pump, vavuum pump is opened, is vacuumized, open source pump one, make source pump one
The heat exchange of evaporator one and water cooling pipeline 11 make moisture condensation, condenser one and the heat cycles pipeline 22 of source pump one are carried out
Heat exchange makes the fluid media (medium) heating in heat cycles pipeline 22, after being heated to the fermentation temperature of biological bacteria to drying oven, enters
Step 3】；
3】Water cooling pipeline 11 is closed, opens exhaust pipeline, blower fan, the evaporator two of source pump one is opened, is produced by biological bacteria
Raw heat bakes out the moisture in drying material, water discharge is condensed into through evaporator two, until drying terminates.
Embodiment six
On the basis of embodiment one to five, source pump can set it is multigroup, such as in Fig. 1, including one group of source pump
One and multigroup source pump two.
Source pump one can use any in following two structures.
The first structure of source pump one：Such as Fig. 3, including compressor 1, condenser 1, heat exchanger 1, evaporator one
6th, evaporator 2 10, throttling arrangement 1, throttling arrangement 25, the pressure high temperature hot gas that the compressor 1 is discharged pass through condenser
It is divided into two-way after one 2, the M passages all the way through throttling arrangement 1, heat exchanger 1 return to compressor 1, and another way is through heat exchanger 1
N channel, throttling arrangement 25, compressor 1 is returned to after evaporator 1, the M passages and N channel of the heat exchanger 1 carry out heat
Exchange, evaporator 1 and evaporator 2 10 are in parallel.Evaporator 1 is used for carrying out the steam that vavuum pump is released from drying oven
Dehumidifying.Evaporator 2 10 is used to dehumidify to the steam that blower fan is extracted out from drying oven.
Second of structure of source pump one：By the throttling arrangement 1 in the first structure of source pump one and heat exchange
The M channel positions of device 1 are exchanged, while throttling arrangement 25 and the position of the N channel of heat exchanger 1 are exchanged, i.e., described heat pump machine
Group one includes compressor 1, condenser 1, heat exchanger 1, evaporator 1, evaporator 2 10, throttling arrangement 1, throttling arrangement
25, by being divided into two-way after condenser 1, the M all the way through heat exchanger 1 leads to the pressure high temperature hot gas that the compressor 1 is discharged
Road, throttling arrangement 1 return to compressor 1, and another way is returned after throttling arrangement 25, the N channel of heat exchanger 1, evaporator 1
To compressor 1, the M passages and N channel of the heat exchanger 1 carry out heat exchange, and evaporator 1 and evaporator 2 10 are in parallel.
Such as Fig. 2, source pump two can use it is any in following two structures, i.e., relative to source pump one,
Source pump two does not include evaporator 2 10.
The first structure of source pump two, the source pump two include compressor 1, condenser 1, heat exchanger 1,
Evaporator 1, throttling arrangement 1, throttling arrangement 25, the pressure high temperature hot gas that the compressor 1 is discharged pass through condenser 1
After be divided into two-way, the M passages all the way through throttling arrangement 1, heat exchanger 1 return to compressor 1, N of the another way through heat exchanger 1
Compressor 1 is returned to after passage, throttling arrangement 25, evaporator 1, the M passages and N channel of the heat exchanger 1 carry out hot friendship
Change；
Second of structure of source pump two, the source pump two include compressor 1, condenser 1, heat exchanger 1, evaporation
Device 1, throttling arrangement 1, throttling arrangement 25, the pressure high temperature hot gas that the compressor 1 is discharged pass through after condenser 1 points
For two-way, the M passages through heat exchanger 1, throttling arrangement 1 return to compressor 1 all the way, and another way is through throttling arrangement 25, heat exchange
Compressor 1 is returned to after the N channel of device 1, evaporator 1, the M passages and N channel of the heat exchanger 1 carry out heat exchange.
Preferably, evaporator 1 can select double-tube heat exchanger, have erosion-resisting advantage.Condenser 1 can select
Plate type heat exchanger, heat exchanger 1 can also select plate type heat exchanger, and throttling arrangement 1 is heating power expansion valve or electronic expansion
Valve, throttling arrangement 25 are electric expansion valve or heating power expansion valve.Property is also an option that between evaporator 1 and condenser 1
Be provided with fluid reservoir 7, filter 8, liquid-sighting glass 9 etc..Evaporator 2 10 is finned heat exchanger.Evaporator 1 and evaporator two
Magnetic valve is provided with branch road where 10, to make can to switch between two branch roads.
Water cooling pipeline can be that a pipeline gets off heat exchange of being connected successively with the evaporator 1 of every group of source pump, water cooling
Pipeline can also be that main line branch gets off parallel heat exchanging, i.e. each branch of water cooling pipeline steaming with one group of source pump respectively
Send out device 1 to exchange heat, preferred parallel heat exchanging, as shown in Figure 3, can now be automatically turned in each branch of water cooling pipeline with
Close.
Preferably, condenser one 2 of the heat cycles pipeline 22 also with source pump is exchanged heat.Heat cycles pipeline 22 can
To be that a pipeline gets off heat exchange of being connected successively with the condenser 1 of every group of source pump, heat cycles pipeline 22 can be one
Root line branching gets off parallel heat exchanging, i.e. each branch of heat cycles pipeline 22 condenser one with one group of source pump respectively
2 parallel heat exchangings, preferably parallel heat exchanging, as shown in Figure 3, it can now be cut automatically in each branch of heat cycles pipeline 22
It is disconnected and open the branch road.Condenser absorbs the medium that the heat that evaporator heat exchange absorbs is used in heat cycles pipeline, and medium is again
Heat is sent in heated drying oven.
The running of the present embodiment is：
1】Material is sent into drying oven；
2】Open circulating pump 18；The additional thermal of electricity is opened, is heated to medium, so as to give drying stove heat；Open water cooling pipeline
11, exhaust pipeline is closed, when having vavuum pump, vavuum pump is opened, is vacuumized；When furnace temperature to be dried reaches setting value, heat
Pump assembly is started working successively, the evaporator one of source pump one and the evaporator one of source pump two is changed with water cooling pipeline 11
Heat makes moisture condensation, and the condenser one and heat cycles pipeline 22 of source pump one and source pump two, which carry out heat exchange, makes heating
Fluid media (medium) heating in circulation line 22, after being heated to the fermentation temperature of biological bacteria to drying oven, into step 3】；
3】Water cooling pipeline is closed, opens exhaust pipeline, blower fan, opens evaporator two, closes the evaporator one of all source pumps,
Until drying terminates.
In the process, Energy Efficiency Ratio can reach 4.5kg. water/kw.h.
The vacuum heat pump drying system of the present embodiment be particularly suitable for use in sludge drying, kitchen garbage drying, fish meal drying etc.
It can be stirred and the material of unaffected character of use in drying course.
Effect explanation：Exemplified by drying 3000kg sludge, its humidity is 80%, it is desirable to which humidity is reduced to 30% by 80%.
Then water yield：3000kg*0.72=2160kg；First drying course humidity drops to 60% by 80%, removes 1.5 tons
Water, second drying course humidity drop to 30% by 60%, remove 0.6 ton of water.
Design drying time：24h, then average water yield：2160kg/24h=90kg/h
Design uses 2, compressor：12HP
Design drying temperature：50℃~60℃
In the case：Compressor horsepower：7.7*2=15.4KW
Other powers of motor：5kw
Dehumidification rate is：90÷（15.4+5）=4.41kg water/kw.h.
Claims (10)
- A kind of 1. heat pump drying system, it is characterised in that：Including drying oven（20）, source pump one, with the water of drying oven UNICOM Cold pipeline（11）, the drying oven（20）On be additionally provided with wind exhausting outlet and air draft entrance, the drying oven（20）Air draft go out Mouthful it is connected by the air draft entrance of exhaust pipeline and drying oven, in the exhaust pipeline and/or at wind exhausting outlet and/or air draft Porch is provided with blower fan, the evaporator two in the source pump one（10）It is arranged in exhaust pipeline.
- 2. heat pump drying system according to claim 1, it is characterised in that：The heat pump drying system also includes full heat and handed over Change core body（19）, the drying oven（20）Wind exhausting outlet and Total heat exchange core body（19）A tunnel inlets be connected, full heat is handed over Change core body（19）A ducting outlets and Total heat exchange core body（19）B tunnel inlets be connected, the evaporator two（10）Set In Total heat exchange core body（19）A ducting outlets and Total heat exchange core body（19）B tunnel inlets between, the Total heat exchange core Body（19）B ducting outlets and the air draft entrance of drying oven be connected.
- 3. heat pump drying system according to claim 1 or 2, it is characterised in that：The heat pump drying system also include with Water cooling pipeline（11）The vavuum pump of connection（13）.
- 4. heat pump drying system according to claim 3, it is characterised in that：The source pump one also includes evaporator one （6）, the evaporator one（6）It is connected in parallel on evaporator two（10）Both ends, the water cooling pipeline（11）With the steaming of source pump one Send out device one（6）Water-cooling channel UNICOM；Or the heat pump drying system also includes source pump three, the water cooling pipeline（11） With the evaporator one of source pump three（6）Water-cooling channel UNICOM.
- 5. heat pump drying system according to claim 4, it is characterised in that：The heat pump drying system is also included to drying Stove（20）The heating plant of thermal source is provided, the heating plant includes heat cycles pipeline（22）, positioned at heat cycles pipeline （22）In fluid media (medium), be serially connected in heat cycles pipeline（22）In circulating pump（18）And heat cycles pipeline（22）Heat Source, the heat cycles pipeline（22）Thermal source be source pump one condenser one（2）And/or positioned at heat cycles pipeline （22）On electric additional thermal.
- 6. heat pump drying system according to claim 5, it is characterised in that：The water cooling pipeline（11）With vavuum pump（13） Between be also associated with closing storage tank（12）, storage tank（12）It is divided into two chambers, chamber one connects vavuum pump（13）And water Cold pipeline（11）, chamber two is connected by pipeline one with air, and valve one is provided with pipeline one（16）, chamber two passes through draining Pipeline is connected with air, and valve three is provided with discharge pipe line（17）, valve one（16）Also pass through pipe close to one end of storage tank Lu Eryu chambers one are connected, and valve two is provided with pipeline two（15）.
- 7. heat pump drying system according to claim 6, it is characterised in that：The source pump one includes compressor（1）、 Condenser one（2）, heat exchanger one（4）, evaporator one（6）, evaporator two（10）, throttling arrangement one（3）, throttling arrangement two（5）, The compressor（1）The pressure high temperature hot gas of discharge passes through condenser one（2）After be divided into two-way, all the way through throttling arrangement one（3）、 Heat exchanger one（4）M passages return to compressor（1）, another way is through heat exchanger one（4）N channel, throttling arrangement two（5）, evaporation Device one（6）After return to compressor（1）, the heat exchanger one（4）M passages and N channel carry out heat exchange, evaporator one（6）With Evaporator two（10）It is in parallel；Or the source pump one includes compressor（1）, condenser one（2）, heat exchanger one（4）, evaporator one（6）, evaporation Device two（10）, throttling arrangement one（3）, throttling arrangement two（5）, the compressor（1）The pressure high temperature hot gas of discharge passes through condensation Device one（2）After be divided into two-way, all the way through heat exchanger one（4）M passages, throttling arrangement one（3）Return to compressor（1）, another way Through throttling arrangement two（5）, heat exchanger one（4）N channel, evaporator one（6）After return to compressor（1）, the heat exchanger one（4） M passages and N channel carry out heat exchange, evaporator one（6）With evaporator two（10）It is in parallel.
- 8. heat pump drying system according to claim 7, it is characterised in that：The heat pump drying system also includes at least one Group source pump two, the source pump two include compressor（1）, condenser one（2）, heat exchanger one（4）, evaporator one（6）、 Throttling arrangement one（3）, throttling arrangement two（5）, the compressor（1）The pressure high temperature hot gas of discharge passes through condenser one（2）Afterwards It is divided into two-way, all the way through throttling arrangement one（3）, heat exchanger one（4）M passages return to compressor（1）, another way is through heat exchanger one （4）N channel, throttling arrangement two（5）, evaporator one（6）After return to compressor（1）, the heat exchanger one（4）M passages and N Passage carries out heat exchange；Or the source pump two includes compressor（1）, condenser one（2）, heat exchanger one（4）, evaporator one（6）, throttling Device one（3）, throttling arrangement two（5）, the compressor（1）The pressure high temperature hot gas of discharge passes through condenser one（2）After be divided into Two-way, all the way through heat exchanger one（4）M passages, throttling arrangement one（3）Return to compressor（1）, another way is through throttling arrangement two （5）, heat exchanger one（4）N channel, evaporator one（6）After return to compressor（1）, the heat exchanger one（4）M passages and N lead to Road carries out heat exchange.
- 9. according to any described heat pump drying methods of claim 1-8, it is characterised in that：Comprise the following steps：1】Material is sent into drying oven；2】Give drying stove heat；Open water cooling pipeline（11）, close exhaust pipeline；When having vavuum pump, vavuum pump is opened；From drying The water cooled pipeline of steam that fire grate goes out（11）Discharge；3】Close water cooling pipeline（11）, exhaust pipeline is opened, the evaporator two in blower fan and source pump one is opened, from drying oven The steam of discharge is condensed through evaporator two and discharged, until drying terminates.
- 10. heat pump drying method according to claim 9, it is characterised in that：Biological bacteria is added with the drying oven, is walked Rapid 2】In, after being heated to the fermentation temperature of biological bacteria to drying oven, into step 3】；When biological bacteria is aerobic bacteria, step 3】 Need to be passed through oxygen in toward drying oven.
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| CN201710720046.4A CN107462063A (en) | 2017-08-21 | 2017-08-21 | Heat pump drying system and furnace drying method |
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