CN106288089B - Thermal flash drying system - Google Patents
Thermal flash drying system Download PDFInfo
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- CN106288089B CN106288089B CN201610831692.3A CN201610831692A CN106288089B CN 106288089 B CN106288089 B CN 106288089B CN 201610831692 A CN201610831692 A CN 201610831692A CN 106288089 B CN106288089 B CN 106288089B
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- 238000001035 drying Methods 0.000 title claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 48
- 238000001816 cooling Methods 0.000 claims abstract description 44
- 239000002912 waste gas Substances 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- 230000008929 regeneration Effects 0.000 claims abstract description 16
- 238000011069 regeneration method Methods 0.000 claims abstract description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003546 flue gas Substances 0.000 claims abstract description 8
- 238000004064 recycling Methods 0.000 claims abstract description 8
- 239000002918 waste heat Substances 0.000 claims abstract description 6
- 238000002485 combustion reaction Methods 0.000 claims description 19
- 238000007791 dehumidification Methods 0.000 claims description 17
- 239000007789 gas Substances 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 230000001502 supplementing effect Effects 0.000 claims description 5
- 239000013589 supplement Substances 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 239000002274 desiccant Substances 0.000 claims 1
- 208000033830 Hot Flashes Diseases 0.000 abstract description 10
- 206010060800 Hot flush Diseases 0.000 abstract description 10
- 238000012546 transfer Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000003795 desorption Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000000576 coating method Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/153—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F2003/1458—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification using regenerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/02—System or Device comprising a heat pump as a subsystem, e.g. combined with humidification/dehumidification, heating, natural energy or with hybrid system
- F24F2203/021—Compression cycle
- F24F2203/025—Compression cycle with turbine for compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1024—Rotary wheel combined with a humidifier
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Atmospheric Sciences (AREA)
- Drying Of Gases (AREA)
- Central Air Conditioning (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a hot flash drying system, which comprises a heating and dehumidifying device, a forced cooling device and a heat pump, wherein the heating and dehumidifying device comprises a heating mechanism and a dehumidifying rotary turbine, the flue gas waste heat recycling mechanism comprises a high-temperature waste gas discharge port communicated with the heating mechanism and a high-temperature waste gas pipe of a regeneration area of the dehumidifying rotary turbine, a fresh air temperature adjusting pipe connected to the high-temperature waste gas pipe in a bypassing manner, a temperature sensor arranged on the air inlet side of the regeneration area, and a fresh air adjusting valve and a waste gas adjusting valve which are respectively arranged on the fresh air temperature adjusting pipe and the high-temperature waste gas pipe and are in controllable connection with the temperature sensor; utilize the heat pump to shift the heat that the forced cooling section emitted to the new trend heating section, utilize the guide plate to improve heat transfer effect, control high temperature exhaust emission temperature, four-point inter combination has effectively reduced the circulating air temperature, circulation volume and the new trend volume of supplying of hot flash dry, reduces the volume of wind to the forced cooling.
Description
Technical Field
The invention relates to the technical field of flash drying dehumidification air conditioners, in particular to a thermal flash drying system.
Background
With the emergence of automobile coating processes such as water paint and the like, hot flash drying equipment becomes an indispensable part of an automobile coating workshop, and the hot flash drying equipment is mainly used for avoiding the problem of coating quality caused by bubbles generated by water evaporation when a vehicle body is baked in a wet-on-wet paint process.
Heating dehydrating unit is the important device in the flash drying equipment, heating dehydrating unit utilizes the circulated air of predetermined high temperature to heat the dehumidification, carry out the new trend of predetermined amount in the circulated air simultaneously and supply the humidity in order to reduce the circulated air, improve hot dry effect, for the water content in the reduction new trend, generally adopt the dehumidification surface cooler among the prior art, this just needs to cool down the dehumidification to the new trend earlier, then reheat, it is big to lead to whole energy consumption loss.
Disclosure of Invention
The invention aims to provide a hot flash drying system aiming at the technical defects in the prior art.
The technical scheme adopted for realizing the purpose of the invention is as follows:
a hot flash drying system comprises a heating and dehumidifying device, a forced cooling device and a heat pump, wherein the heating and dehumidifying device comprises a heating mechanism and a dehumidifying rotary machine, a fresh air inlet pipeline of the heating mechanism is communicated to a fresh air supplement inlet of the heating mechanism after passing through a processing area of the dehumidifying rotary machine, a regeneration area of the dehumidifying rotary machine is communicated with a flue gas waste heat recycling mechanism,
the flue gas waste heat recycling mechanism comprises a high-temperature waste gas discharge port communicated with the heating mechanism and a high-temperature waste gas pipe of a regeneration area of the dehumidifying rotary turbine, a fresh air temperature adjusting pipe connected to the high-temperature waste gas pipe in a bypassing manner, a temperature sensor arranged on the air inlet side of the regeneration area, and a fresh air adjusting valve and a waste gas adjusting valve which are respectively arranged on the fresh air temperature adjusting pipe and the high-temperature waste gas pipe and are in controllable connection with the temperature sensor;
the heating mechanism comprises a shell, and a combustion cylinder, a heat exchange cylinder and a filtering part which are sequentially arranged in the shell, wherein the heat exchange cylinder is positioned on the right side of the combustion cylinder, an upper guide plate and a lower guide plate are respectively arranged at the upper part and the lower part of the combustion cylinder at intervals, and the right ends of the upper guide plate and the lower guide plate are both arranged on the right half part of the combustion cylinder;
the evaporator of the heat pump is serially arranged on a strong cooling circulation air path of the strong cooling device, and the condenser of the heat pump is arranged on a fresh air supplementing pipeline and is positioned at the rear part of the dehumidifying rotary turbine.
The access point of the fresh air temperature adjusting pipe and the high-temperature waste gas pipe is positioned at the rear part of the waste gas adjusting valve.
The waste gas regulating valve is a three-way valve, and one valve port is connected to a discharge port through a discharge pipeline.
The upper guide plate and the lower guide plate are respectively arc-shaped and coaxial with the combustion cylinder.
The upper guide plate and the lower guide plate are respectively tangent with the top plate or the bottom plate of the shell correspondingly.
The arc length of the lower guide plate is greater than that of the upper guide plate, and two ends of the lower guide plate are relatively protruded.
And a vertical connecting plate is arranged between the left end of the lower guide plate and the shell bottom plate, and the right end of the lower guide plate is connected with the shell bottom plate through an inclined plate.
And two ends of the upper guide plate are respectively fixedly connected with the top plate of the shell through inclined connecting plates.
The forced cooling circulation air path is connected with a cooling chamber in series, and a forced cooling air return machine, an evaporator and a filter are sequentially arranged in the cooling chamber from an air return side to an air outlet side.
The fresh air supplementing pipeline is provided with a fresh air preheating chamber, the fresh air preheating chamber is sequentially provided with a filter condenser and a fresh air fan from an air inlet side, and an air outlet of the fresh air fan is connected to the fresh air supplementing pipeline.
Compared with the prior art, the invention has the beneficial effects that:
the invention uses the dehumidifying rotary wheel for dehumidifying fresh air, effectively reduces humidity, utilizes relatively clean combustion waste gas of the heating mechanism to adjust temperature to be used as desorption high-temperature gas of the dehumidifying rotary wheel, simultaneously utilizes the heat pump to transfer heat emitted by the forced cooling device to the fresh air heating section, utilizes the guide plate to improve heat exchange effect, controls the discharge temperature of the high-temperature waste gas, and effectively reduces the circulating air temperature, circulating amount and fresh air input amount of hot flash drying by combining four points, reduces the requirements on the forced cooling air amount and the forced cooling air temperature, realizes the integral optimal configuration of energy, greatly reduces energy consumption and saves cost.
Drawings
FIG. 1 is a schematic structural view of a thermal flash system of the present invention;
fig. 2 is a schematic structural view of the heating mechanism.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 and 2, the thermal flash drying system of the present invention includes a heating and dehumidifying device 50, a forced cooling device 60, and a heat pump, wherein the heating and dehumidifying device includes a heating mechanism 40 and a dehumidifying rotary turbine 30, the heating mechanism is a quaternary body for heating fresh air and circulating air, a fresh air inlet pipe of the heating mechanism passes through a dehumidifying area of the dehumidifying rotary turbine and then is communicated to a fresh air inlet of the heating mechanism, and a regeneration area of the dehumidifying rotary turbine is communicated with a high temperature desorption gas.
Wherein, heating mechanism be gas heat transfer formula heating device, it includes casing 1, sets gradually combustion cylinder 2, heat-transfer cylinder 3 and the filter house 4 in the casing, the casing left end be provided with the air inlet, the air inlet includes new trend inlet 5 and circulated air inlet 6, the right-hand member is provided with gas outlet 7, and gas outlet department be provided with embedded circulating fan 8, heat exchanger 3 be in 2 right sides of combustion cylinder upper portion and lower part be provided with guide plate 9 and lower guide plate 10 respectively with the interval, the right-hand member of last guide plate and lower guide plate all be in right side of combustion cylinder, strideed across the right side of middle part in order to guide the combustion cylinder with the air current promptly. Go up the guide plate and guide plate down be in respectively the casing in along the axial extension of a burner, guide the air current through a burner in the casing, make it enter into the lee side of a burner 2, improve holistic radiating effect, go up the setting of guide plate and guide plate down in addition, effectively improved the wind speed when a burner, further improve heat transfer effect, the air can be with a burner lee face contact, thereby reach increase heat transfer area, improve the effect of heat transfer volume, the barrel temperature of effective control burner. Overall, realize improving heat exchange efficiency, the exhaust gas temperature is showing and is reducing, practices thrift the energy consumption about 6%.
Preferably, the upper arc guide plate and the lower arc guide plate are respectively arc-shaped coaxial with the combustion cylinder. Meanwhile, the upper guide plate and the lower guide plate are respectively tangent to the top plate or the bottom plate of the shell correspondingly, the maximum distance is adopted, the ventilation section is effectively ensured while the wind speed is increased and airflow is guided to enter the lee side of the combustion cylinder, and the whole air supply is not influenced.
Specifically, the arc length of the lower guide plate is greater than that of the upper guide plate, and both ends of the lower guide plate protrude relatively. The lower guide plate is characterized in that a vertical connecting plate is arranged between the left end of the lower guide plate and the shell bottom plate, the right end of the lower guide plate is connected with the shell bottom plate through an inclined plate, and the two ends of the upper guide plate are fixedly connected with the top plate of the shell through inclined connecting plates respectively. Two ends of the upper guide plate are connected and transited by the inclined connecting plates 11, so that collision caused by air inlet is effectively avoided, and wind resistance is reduced.
The high-temperature desorption gas can be supplied by a matched independent burner, and the waste gas of the heating mechanism after temperature regulation can be utilized. In order to realize the recycling of the waste gas, a waste gas heat recycling mechanism is needed, the waste gas heat recycling mechanism comprises a high-temperature waste gas discharge port of a heating mechanism 40, a high-temperature waste gas pipe 41 of a regeneration area 32 of the dehumidification rotary turbine, a fresh air temperature adjusting pipe 42 which is connected to the high-temperature waste gas pipe in a bypassing manner, a temperature sensor which is arranged on the air inlet side of the regeneration area 32, and a fresh air adjusting valve and a waste gas adjusting valve which are respectively arranged on the fresh air temperature adjusting pipe and the high-temperature waste gas pipe and are in controllable connection with the temperature sensor, such as an electric control valve.
Preferably, in order to improve the temperature control controllability, the access point of the fresh air temperature adjusting pipe and the high-temperature exhaust pipe is positioned at the rear part of the exhaust gas adjusting valve. Meanwhile, the waste gas regulating valve is a three-way valve, and one valve port is connected to the discharge port through a discharge pipeline. Namely, only part of high-temperature waste gas is selected to be mixed with the indoor fresh air according to the feedback of the temperature sensor.
The invention effectively utilizes the high-temperature waste gas, and the fresh air mixed with the high-temperature waste gas can be completely sucked by the regeneration fan at the regeneration side without independently arranging the fan, thereby further controlling the realization cost and simplifying the control.
Aiming at the defects that the moisture content of fresh air is still high and the high temperature and air quantity are needed to meet the flash drying dehydration requirement when the fresh air is dehumidified by a cold water coil pipe used in the existing flash drying system, the invention applies the dehumidification rotary wheel type dehumidification method to a fresh air supplement mechanism of the flash drying system and can control the humidity of a fresh air inlet to be 3g/m3And the flash drying dehydration requirement is met under the condition of reducing the flash drying temperature and the ventilation volume, and the running energy consumption of equipment is saved. And because the humidity is reduced, the temperature of the flash drying circulating air is reduced from 70-80 ℃ to 50-60 ℃, so that the energy conservation and emission reduction are further realized, the flash drying temperature is reduced, the natural gas consumption is saved, the energy consumption of a fan is reduced by reducing the air quantity, meanwhile, the quaternary body heating box can be made smaller, the initial investment is reduced, further, because the flash drying temperature is reduced, the air quantity and time of a forced cooling step can be reduced, the interlocking type energy conservation and emission reduction is realized, and the overall cost is reduced. The heating mechanism is used, for example, clean high-temperature waste gas generated by combustion of the quaternary body is used as a regenerative heat source of the dehumidifying rotary wheel machine, so that the waste heat of flue gas exhausted by the quaternary body in the flash drying system is utilized in the dehumidifying rotary wheel, and the full utilization of energy is realized. Meanwhile, because the temperature of the regeneration heat source of the dehumidification rotating wheel is about 115 ℃, and the temperature of the flue gas after the quaternary body is combusted and exchanges heat is about 200 ℃, the temperature of the flue gas is regulated and controlled in a fresh air supplementing mode, the temperature of the air at the regeneration side is effectively ensured to be constant, and the normal operation of the dehumidification rotating wheel machine is ensured.
The evaporator 24 of the heat pump is serially connected to the forced cooling circulation air path 61 of the forced cooling device, and the condenser 23 of the heat pump is disposed on the fresh air supply pipeline 51 of the heating and dehumidifying device. The heat pump is similar to the prior art, the heat exchange of the evaporator and the condenser of the heat pump is substantially applied, the heat transfer is utilized, the cooling and heating requirements are met, and the overall energy use level is effectively improved.
Specifically, the forced cooling circulation air path is connected in series with a cooling chamber, a forced cooling air return fan 21, an evaporator 24 and a filter 22 are sequentially arranged in the cooling chamber from an air return side to an air outlet side, and the forced cooling circulation air path enters the two sides of the forced cooling device 60 through an air valve 5 to perform forced cooling operation after hot flash drying. Simultaneously, fresh air supply pipeline 51 get into the fresh air preheating chamber after the regional dehumidification of the processing of foretell dehumidification runner of process, the fresh air preheating chamber set gradually filter 52, condenser 23 and fresh air fan 53 from the air inlet side, fresh air fan's air outlet be connected to the fresh air inlet. The adding of new trend is through preheating of condenser after the dehumidification earlier, effectively reduces the demand of later stage heating, has realized thermal total distribution and high-efficient use. Wherein, a bypass pipe is arranged in parallel at one side of the condenser for maintenance.
That is, one or more heat pump devices are used for replacing a water chilling unit, an evaporator of a heat pump is arranged inside a forced cooling device, so that a refrigerant and forced cooling air supply directly exchange heat, the forced cooling air supply is reduced to 15 ℃ from 30 ℃, in addition, a condenser of the heat pump device is arranged inside a hot flash fresh air heating device, and flash fresh air is heated by heat generated by the heat pump device.
In summary, the invention has the following advantages:
(1) the cooling of the forced cooling air supply is completed by the evaporator of the heat pump device, so that the forced cooling air supply directly exchanges heat with the refrigerant, the evaporation temperature can be increased to 8 ℃, the heat exchange temperature difference is reduced, and the heat exchange efficiency is increased.
(2) The heat generated by the heat pump device is not wasted, but utilized in the fresh air heating device.
(3) The heat pump device replaces a water chilling unit, so that the cost of chilled water circulation and control is saved, and the cost of a burner in a fresh air heating device in the traditional scheme is saved.
Parameter contrast, for traditional scheme, the cooling water set evaporating temperature is 0 ℃, condensing temperature is 45 ℃, because only cold energy is utilized, heat is discharged to the outdoor through a cooling tower, therefore, under the working condition, the calculated coefficient of performance EER (the ratio of the cooling water set refrigerating capacity to the compressor power consumption) of the cooling water set is 3.2 (the performance system is lower if not containing a chilled water circulating pump and the cooling tower power consumption, and if the performance system is calculated), and the heat pump set evaporating temperature is 8 ℃, condensing temperature is 60 ℃, because the system not only utilizes the heat pump set refrigerating capacity, but also utilizes the heat pump set heating capacity, therefore, under the working condition, the calculated coefficient of performance EER (the ratio of the heat pump set refrigerating capacity to the heating capacity) of the heat pump set is 6.4.
At 50000Nm of forced cooling air supply volume3New air volume 25000Nm3For example,/h, the energy consumption of the conventional scheme is: the power consumption of the water chilling unit is 20.2kwh, and the heating energy consumption of the burner is 405.3 kwh; after the invention is applied, the energy consumption of the whole system is 73.4kwh, and the requirements of energy conservation and emission reduction are realized.
In conclusion, the dehumidification rotating wheel is used for dehumidification of fresh air, the humidity is effectively reduced, the relatively clean combustion waste gas of the heating mechanism is used for temperature adjustment and then serves as desorption high-temperature gas of the dehumidification rotating wheel, meanwhile, the heat emitted by the forced cooling device is transferred to the fresh air heating section through the heat pump, the heat exchange effect is improved through the guide plate, the discharge temperature of the high-temperature waste gas is controlled, four points are combined with one another, the circulating air temperature, the circulating amount and the fresh air input amount of hot flash drying are effectively reduced, the requirements on the forced cooling air amount and the forced cooling air temperature are reduced, the overall optimal configuration of energy is realized, the energy consumption is greatly reduced, and the cost is saved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A thermal flash drying system is characterized in that the system comprises a heating and dehumidifying device, a forced cooling device and a heat pump, the heating and dehumidifying device comprises a heating mechanism and a dehumidifying rotary wheel machine, a fresh air supplement pipeline of the heating mechanism is communicated to a fresh air supplement inlet of the heating mechanism after passing through a processing area of the dehumidifying rotary wheel machine, the regeneration area of the dehumidification rotary turbine is communicated with the flue gas waste heat recycling mechanism, the flue gas waste heat recycling mechanism comprises a high-temperature waste gas discharge port communicated with the heating mechanism and a high-temperature waste gas pipe of the regeneration area of the dehumidification rotary turbine, a fresh air temperature adjusting pipe which is connected to the high-temperature waste gas pipe in a bypassing manner, and a temperature sensor arranged at the side of an air inlet of the regeneration area, the fresh air regulating valve and the waste gas regulating valve are respectively arranged on the fresh air temperature regulating pipe and the high-temperature waste gas pipe and are in controllable connection with the temperature sensor;
the heating mechanism comprises a shell, and a combustion cylinder, a heat exchange cylinder and a filtering part which are sequentially arranged in the shell, wherein the heat exchange cylinder is positioned on the right side of the combustion cylinder, an upper guide plate and a lower guide plate are respectively arranged at the upper part and the lower part of the combustion cylinder at intervals, and the right ends of the upper guide plate and the lower guide plate are both arranged on the right half part of the combustion cylinder;
the evaporator of the heat pump is serially arranged on a strong cooling circulation air path of the strong cooling device, and the condenser of the heat pump is arranged on a fresh air supplementing pipeline and is positioned at the rear part of the dehumidifying rotary turbine.
2. The thermal flash drying system of claim 1, wherein the point of attachment of the fresh air temperature regulating pipe to the hot exhaust pipe is located at the rear of the exhaust gas regulating valve.
3. The thermal flash drying system of claim 1, wherein the exhaust gas regulating valve is a three-way valve, and one of the valve ports is connected to the exhaust port of the regeneration zone of the desiccant rotor turbine by a high temperature exhaust pipe.
4. The thermal flash drying system of claim 1, wherein said upper baffle and said lower baffle are each in the shape of a circular arc coaxial with said combustion bowl.
5. The thermal flash system of claim 4 wherein the upper baffle is tangential to the top plate of the housing and the lower baffle is tangential to the bottom plate of the housing.
6. The thermal flash system of claim 4 wherein said lower baffle has an arc length greater than the arc length of said upper baffle and opposite ends.
7. The flash drying system of claim 6, wherein a vertical connecting plate is disposed between the left end of the lower baffle and the bottom plate of the casing, and the right end of the lower baffle is connected to the bottom plate of the casing through an inclined plate.
8. The flash drying system according to claim 4, wherein both ends of the upper deflector are fixedly connected with the top plate of the shell respectively through inclined connecting plates.
9. The flash drying system according to claim 1, wherein the forced cooling circulation air path is connected in series with a cooling chamber, and a forced cooling air return fan, an evaporator and a filter are sequentially arranged in the cooling chamber from the air return side to the air outlet side.
10. The thermal flash drying system of claim 9, wherein the fresh air supply line is provided with a fresh air preheating chamber, the fresh air preheating chamber is provided with a filter condenser and a fresh air blower in sequence from an air inlet side, and an air outlet of the fresh air blower is connected to the fresh air supply line.
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| CN201610831692.3A CN106288089B (en) | 2016-09-20 | 2016-09-20 | Thermal flash drying system |
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| CN201610831692.3A CN106288089B (en) | 2016-09-20 | 2016-09-20 | Thermal flash drying system |
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| CN106288089B true CN106288089B (en) | 2021-12-17 |
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| CN108844343A (en) * | 2018-07-30 | 2018-11-20 | 广东欧亚制冷设备制造有限公司 | A kind of heat pump drying system |
| CN109028542B (en) * | 2018-08-31 | 2024-01-19 | 山东奇威特太阳能科技有限公司 | Heat exchanger for heat pump unit and fresh air preheating system comprising same |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4173924A (en) * | 1978-03-01 | 1979-11-13 | Schweitzer Industrial Corporation | Paint spray booth with air supply system |
| US4367787A (en) * | 1980-05-16 | 1983-01-11 | Haden Schweitzer Corporation | Air conditioning apparatus and method for paint spray booths |
| DE10030383C1 (en) * | 2000-06-21 | 2001-10-04 | Daimler Chrysler Ag | Non-thermal drying of water-based paint on bodywork, employs constant capacity dryer for recirculated air, operated with variable bypass |
| DE102006042501B4 (en) * | 2006-09-07 | 2010-11-25 | Eisenmann Anlagenbau Gmbh & Co. Kg | Method and installation for drying objects |
| CN201177440Y (en) * | 2008-01-23 | 2009-01-07 | 东莞丰裕电机有限公司 | Environment-friendly energy-saving equipment for waste gas incineration and waste heat utilization |
| WO2010044392A1 (en) * | 2008-10-14 | 2010-04-22 | 本田技研工業株式会社 | Painting apparatus |
| CN203571920U (en) * | 2013-10-17 | 2014-04-30 | 东风设计研究院有限公司 | Rotary wheel dehumidification system |
| CN203704601U (en) * | 2013-12-19 | 2014-07-09 | 东风设计研究院有限公司 | Heat pump system for flash-off dehumidification air conditioner |
| DE102014008472A1 (en) * | 2014-06-05 | 2015-12-17 | Wenker Gmbh & Co. Kg | A method for post-combustion of the exhaust air of a drying plant, in particular a motor vehicle drying plant, and apparatus for post-combustion of the exhaust air of a drying plant |
| CN205191792U (en) * | 2015-10-12 | 2016-04-27 | 苏州天成涂装设备工程有限公司 | Amount of wind balanced structure of circulated air device |
| CN105222229A (en) * | 2015-10-15 | 2016-01-06 | 江苏骠马智能装备股份有限公司 | A kind of paint spray booth wind circulating system |
| CN206160336U (en) * | 2016-09-20 | 2017-05-10 | 中国汽车工业工程有限公司 | Responsibility is dodged all to heat |
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