CN102261702B - Dual-effect solution dehumidification fresh air unit - Google Patents

Dual-effect solution dehumidification fresh air unit Download PDF

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CN102261702B
CN102261702B CN 201110141870 CN201110141870A CN102261702B CN 102261702 B CN102261702 B CN 102261702B CN 201110141870 CN201110141870 CN 201110141870 CN 201110141870 A CN201110141870 A CN 201110141870A CN 102261702 B CN102261702 B CN 102261702B
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temperature
regenerator
low
dehumidification
solution
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CN 201110141870
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Chinese (zh)
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CN102261702A (en
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王厉
骆菁菁
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浙江理工大学
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Abstract

The invention discloses a dual-effect solution dehumidification fresh air unit which comprises a high-temperature solution dehumidification circulation system and a low-temperature solution dehumidification circulation system which are connected through a coupling heat exchanger (9), wherein the high-temperature solution dehumidification circulation system comprises a high-temperature regeneratorsensible heat recoverer (1), a high-temperature regenerator (2), a high-temperature regenerator heater (3), a high-temperature solution heat accumulator (6), a high-temperature dehumidification device (8), a high-temperature dehumidification device sensible heat recoverer (11) and the like; and the low-temperature solution dehumidification circulation system comprises a low-temperature regenerator sensible heat recoverer (12), a low-temperature regenerator (13), a low-temperature solution heat accumulator (16), a low-temperature dehumidification device (18), a low-temperature dehumidificationcooler (19) and the like. The dual-effect solution dehumidification fresh air unit can be used for reducing the irreversible loss of a solution dehumidification fresh air system in high-temperature heat source driving.

Description

The dual-effect solution dehumidification fresh air group
Technical field
The present invention relates to a kind of dual-effect solution dehumidification fresh air group, belong to the Refrigeration ﹠ Air-Conditioning equipment technical field.
Background technology
The basic principle of the current new wind solution dehumidification unit that adopts mainly is comprised of regenerator sensible heat recoverer 1 ', regenerator 2 ', regenerator heater 3 ', regenerator solution circulation pump 4 ', concentrated solution pump 5 ', solution regenerator 6 ', weak solution pump 7 ', dehumidifier 8 ', dehumidifier cooler 9 ' and dehumidifier solution circulation pump 10 ' as shown in Figure 1.
During this system works, new wind is undertaken entering regenerator 2 ' behind the Exchange of apparent heat by regenerator sensible heat recoverer 1 ' and air draft, thermal source is by the solution heat supply of regenerator heater 3 ' in the regenerator 2 ', solution after being heated sprays from regenerator 2 ' top by regenerator solution circulation pump 4 ', in regenerator sensible heat recoverer 1 ', carry out the caloic exchange with the new wind of processing through regenerator sensible heat recoverer 1 ', moisture in the solution shifts to new wind, solution concentration raises, reach the purpose of regeneration of waste liquor, meanwhile, new wind is become air draft by humidification, in regenerator sensible heat recoverer 1 ', carry out Exchange of apparent heat with new wind again after air draft is flowed out from regenerator 2 ', drain at last environment.Concentrated solution by the 5 ' sucking-off of concentrated solution pump, enters dehumidifier 8 ' from regenerator 2 ' bottom after solution regenerator 6 ' and the weak solution backheat of sending here by weak solution pump 7 ' are lowered the temperature.After solution in the dehumidifier 8 ' is drawn from the bottom by the dehumidifier cooler 9 ' water cooling that is cooled, deliver to the ejection of dehumidifier 8 ' top by dehumidifier solution circulation pump 10 ' again, carry out the caloic exchange with the filling surface of new wind in dehumidifier 8 ' that enters, water vapour in the new wind shifts to solution, reach the purpose of fresh air dehumidification, meanwhile, solution becomes weak solution, again sends back in the regenerator 2 ' by weak solution pump 7 ' and regenerates.
On this basic dehumidification process basis, for the steam partial pressure that reduces between dehumidification solution and the new wind poor, also be everlasting at present and adopt multi-stage countercurrent arrangement form (being generally two-stage) in the solution dehumidification device, in order to reduce heat transfer temperature difference, also can in multistage layout, carry out the cascade utilization of temperature counterpart to thermal source simultaneously.These improvement on citation form can effectively reduce the irreversible loss in the solution dehumidification process, improve dehumidification rate, but when heat source temperature is higher (such as 95 ℃), dehumidification solution in regenerator by superheated, so that the steam partial pressure between solution surface and the regeneration air is poor excessive, even adopt the multi-stage solution dehumidifying form, still be difficult to avoid producing larger irreversible loss, for this reason, propose a kind ofly can carry out cascaded utilization of energy to high temperature heat source, the new wind solution dehumidification system that reduces irreversible loss just seems very necessary.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of dual-effect solution dehumidification fresh air group, and it can reduce the irreversible loss of solution dehumidification VMC when high temperature heat source drives.
In order to solve the problems of the technologies described above, the invention provides a kind of dual-effect solution dehumidification fresh air group, comprise the pyrosol dehumidifying circulatory system and the cryogenic fluid dehumidifying circulatory system; The pyrosol dehumidifying circulatory system links to each other by coupled heat exchanger with the cryogenic fluid dehumidifying circulatory system;
The pyrosol dehumidifying circulatory system comprises high-temp regenerator sensible heat recoverer, high-temp regenerator, high-temp regenerator heater, high-temp regenerator solution circulation pump, high temperature concentrated solution pump, pyrosol regenerator, high temperature weak solution pump, high temperature dehumidifier, high temperature dehumidifier solution circulation pump and high temperature dehumidifier sensible heat recoverer;
At the top of high-temp regenerator spray thrower I is set, spray liquid feeder I is set in the bottom of high-temp regenerator; At the top of high temperature dehumidifier spray thrower II is set, spray liquid feeder II is set in the bottom of high temperature dehumidifier;
The outlet of spray liquid feeder I is successively by being connected with spray thrower I behind high-temp regenerator heater and the high-temp regenerator solution circulation pump; Be respectively equipped with thermal source inlet pipe and thermal source on the regenerator heater and go out pipe, thermal source inlet pipe and thermal source go out pipe and are connected with the two ends of regenerator heater inner coil pipe respectively;
Another outlet of spray liquid feeder I is connected with the entrance of spray liquid feeder II by high temperature concentrated solution pump, pyrosol regenerator successively;
The outlet of spray liquid feeder II is connected with spray thrower II by coupled heat exchanger and high temperature dehumidifier solution circulation pump successively;
Another outlet of spray liquid feeder II is connected with the entrance of spray liquid feeder I by high temperature weak solution pump, pyrosol regenerator successively;
The cryogenic fluid dehumidifying circulatory system comprises low-temperature regenerator sensible heat recoverer, low-temperature regenerator, low-temperature regenerator solution circulation pump, low temperature concentrated solution pump, cryogenic fluid regenerator, low temperature weak solution pump, low temperature dehumidification device, low temperature dehumidification device cooler and low temperature dehumidification device solution circulation pump;
At the top of low-temperature regenerator spray thrower III is set, spray liquid feeder III is set in the bottom of low-temperature regenerator; At the top of low temperature dehumidification device spray thrower IV is set, spray liquid feeder IV is set in the bottom of low temperature dehumidification device;
The outlet of spray liquid feeder III is successively by being connected with spray thrower III behind coupled heat exchanger and the low-temperature regenerator solution circulation pump; Another outlet of spray liquid feeder III is successively by being connected with the entrance of spray liquid feeder IV behind low temperature concentrated solution pump and the cryogenic fluid regenerator;
The outlet of spray liquid feeder IV is connected with the entrance of spray liquid feeder III after by the cryogenic fluid regenerator; Another outlet of spray liquid feeder IV is successively by being connected with spray thrower IV behind low temperature dehumidification device cooler and the low temperature dehumidification device solution circulation pump;
Be respectively equipped with cooling water inlet pipe and cooling water outlet tube on the low temperature dehumidification device cooler, cooling water inlet pipe and cooling water outlet tube are connected with the two ends of low temperature dehumidification device cooler inner coil pipe respectively.
Improvement as dual-effect solution dehumidification fresh air group of the present invention: fresh inlet is aimed at respectively high-temp regenerator sensible heat recoverer, high temperature dehumidifier sensible heat recoverer and low-temperature regenerator sensible heat recoverer, and wind exhausting outlet is aimed at respectively high-temp regenerator sensible heat recoverer and low-temperature regenerator sensible heat recoverer; The low temperature dehumidification device is aimed in the air-supply outlet;
The air outlet of high-temp regenerator sensible heat recoverer is aimed at the air inlet of high-temp regenerator, and the air outlet of high-temp regenerator is aimed at the air inlet of high-temp regenerator sensible heat recoverer;
The air outlet of high temperature dehumidifier sensible heat recoverer is aimed at the air inlet of high temperature dehumidifier, and the air outlet of high temperature dehumidifier is aimed at the air inlet of high temperature dehumidifier sensible heat recoverer, and the air outlet of high temperature dehumidifier sensible heat recoverer is aimed at the air inlet of low temperature dehumidification device;
The air outlet of low-temperature regenerator sensible heat recoverer is aimed at the air inlet of low-temperature regenerator, and the air outlet of low-temperature regenerator is aimed at the air inlet of low-temperature regenerator sensible heat recoverer.
Further improvement as dual-effect solution dehumidification fresh air group of the present invention: the dual-effect solution dehumidification fresh air group also comprises the low-temperature regenerator heater, goes out low-temperature regenerator heater and control valve I are set respectively on the pipe at thermal source; At low-temperature regenerator heater two ends a bypass line is set, at bypass line control valve II is set;
The outlet of spray liquid feeder III is successively by being connected with spray thrower III behind coupled heat exchanger, low-temperature regenerator heater and the low-temperature regenerator solution circulation pump.
Further improvement as dual-effect solution dehumidification fresh air group of the present invention: all fill dehumidification solution in the pyrosol dehumidifying circulatory system and the cryogenic fluid dehumidifying circulatory system, the dehumidification solution concentration that is arranged in the pyrosol dehumidifying circulatory system is higher than the dehumidification solution concentration of the cryogenic fluid dehumidifying circulatory system.
Further improvement as dual-effect solution dehumidification fresh air group of the present invention: dehumidification solution is lithium-bromide solution; The mass concentration that is arranged in the lithium-bromide solution of the pyrosol dehumidifying circulatory system is 55~60%, and the mass concentration that is arranged in cryogenic fluid dehumidifying circulatory system lithium-bromide solution is 45~50%.
The present invention is on the new wind solution dehumidification system of tradition basis, in conjunction with the technical characterstic of double-effect lithium bromide absorption type kind of refrigeration cycle, and the technical scheme of the dual-effect solution dehumidification fresh air group that proposes.
High-temp regenerator and low-temperature regenerator all utilize respectively new wind to regenerate, and new wind is heated the air draft that forms behind the humidification all to carry out being discharged in the environment behind the Exchange of apparent heat with the new wind that has just entered in sensible heat recoverer again.The new wind that need to the process high temperature dehumidifier sensible heat recoverer of at first flowing through, carry out sensible heat transfer with the air draft from the high temperature dehumidifier, enter again the high temperature dehumidifier after being warmed, being entered high temperature dehumidifier sensible heat recoverer after the dehumidifying of high temperature dehumidifier carries out Exchange of apparent heat with the processed new wind that has just entered, flowed into again further dehumidifying in the low temperature dehumidification device after the cooling, thereby finished the whole dehumidification treatments process to new wind.In the high temperature dehumidifier, the condensation latent heat that dehumidification solution discharges when absorbing new wind institute moisture vapor is taken away by coupled heat exchanger and as the thermal source of low-temperature regenerator, the dehumidification solution in the heating low-temperature regenerator is for its regenerative process provides heat.In the low temperature dehumidification device, the condensation latent heat that dehumidification solution discharges when absorbing from high temperature dehumidifier air draft institute moisture vapor is taken away by low temperature dehumidification device cooler, and the cooling water that low temperature dehumidification device cooler adopts is normal temperature cooling water (30 ℃).High temperature heater (HTH) heats by the outside high temperature heat source (such as 95 ℃) of introducing.
In the present invention, 2 imports of coupled heat exchanger are connected with the spray liquid feeder II that is positioned at high temperature dehumidifier bottom and with the spray liquid feeder III that is positioned at the low-temperature regenerator bottom respectively, corresponding, 2 outlets of coupled heat exchanger are connected with the spray thrower II that is positioned at high temperature dehumidifier top and the spray thrower III that is positioned at the low-temperature regenerator top respectively.Two imports of high-temp regenerator sensible heat recoverer connect respectively fresh inlet and high-temp regenerator air outlet, and two outlets connect respectively high-temp regenerator air inlet and wind exhausting outlet.Two imports of low-temperature regenerator sensible heat recoverer connect respectively fresh inlet and low-temperature regenerator air outlet, and two outlets connect respectively low-temperature regenerator air inlet and wind exhausting outlet.Two imports of high temperature dehumidifier sensible heat recoverer connect respectively fresh inlet and high temperature dehumidifier air outlet, and two outlets connect respectively high temperature dehumidifier air inlet and low temperature dehumidification device air inlet.
When the heat that provides when coupled heat exchanger 9 can not satisfy requiring of low-temperature regenerator, can set up on said system form basis a cover low-temperature regenerator heater and bypass thereof and regulate pipeline.At this moment, two imports of low-temperature regenerator heater connect respectively high-temp regenerator heater thermal source outlet and coupled heat exchanger towards the taphole of low-temperature regenerator, two outlets of low-temperature regenerator connect respectively the spray thrower III and the thermal source that are positioned at the low-temperature regenerator top and go out pipe, low-temperature regenerator heater two ends arrange a bypass line, and control valve I and control valve II are set respectively on its straight-through pipeline and the bypass line.When the heat that provides when coupled heat exchanger 9 can not satisfy requiring of low-temperature regenerator, control valve I is opened, and by regulating the heating load of its aperture control low-temperature regenerator heater, this moment, the low-temperature regenerator heater played to carrying out the effect of post bake from the dehumidification solution of low-temperature regenerator, to remedy the deficiency of heat that coupled heat exchanger is provided.
In the present invention, the pyrosol dehumidifying circulatory system has different dehumidification solution concentration with the cryogenic fluid dehumidifying circulatory system, wherein the dehumidification solution concentration of the pyrosol dehumidifying circulatory system is higher, and during such as the employing lithium-bromide solution, the range of choice of solution concentration can be between 45%~60%.
The present invention compares with traditional solution dehumidifying fresh air handling, has the following advantages:
1, can realize to high temperature heat source (such as 95 ℃) the economic benefits and social benefits utilization of heat energy by two dehumidifying circulatory systems that intercouple.The heat that is about to the release of part high temperature heat source is converted into the heat of lower temperature by the high temperature level solution dehumidification circulatory system, and from the high temperature dehumidifier, emit, be used for as the thermal source that drives the cryogenic fluid dehumidifying circulatory system, thus when having avoided direct employing high temperature heat source because the solution superheated being caused the excessive available loss of energy that causes of solution partial pressure of water vapor.
2, can alleviate when dehumidification solution concentration is higher, adopt the incidental solution crystallization phenomenon of normal temperature water quench.In the dual-effect solution dehumidification fresh air group, although pyrosol dehumidifying circulatory system solution concentration is higher, but its pyrosol dehumidifier is to be cooled to the heat release of cryogenic fluid regenerator by coupled heat exchanger, its chilling temperature is higher than normal temperature cooling water, so be not easy to cause the solution crystallization phenomenon because of undercooling.
3, have the advantage that can reduce irreversible mass transfer potential difference identical with the twin-stage solution dehumidifying fresh air handling.New wind at first carries out first order dehumidifying by the pyrosol dehumidifier, enters the cryogenic fluid dehumidifier again and carries out second level dehumidifying, and the excessive shortcoming of mass transfer potential difference has reduced irreversible loss when therefore having overcome the single-stage dehumidifying.
The present invention there is no complicated technological process and changes on traditional solution dehumidifying fresh air handling group basis, system's irreversible loss is little, has obvious cascaded utilization of energy characteristics in the high temperature heat source utilization, and the required parts of system are supporting maturation all, feasibility is strong, is easy to popularize and promote the use of.
Unit of the present invention has been realized cascaded utilization of energy to high temperature heat source by the economic benefits and social benefits loop structure that makes up solution dehumidification, and irreversible different transfer of heat loss and the external heat that can reduce in the dehumidification process are lost.This system can be applicable to the fresh air dehumidification link of warm and humid independence control air conditioner system, to reduce new wind water capacity as main purpose.This unit irreversible loss is little, feasibility is strong, be easy to apply.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
Fig. 1 is the schematic diagram of traditional solution dehumidifying fresh air handling group;
Fig. 2 is the schematic diagram of the dual-effect solution dehumidification fresh air group of embodiments of the invention 1;
Fig. 3 is the schematic diagram of the dual-effect solution dehumidification fresh air group of embodiments of the invention 2.
The specific embodiment
Embodiment 1, a kind of dual-effect solution dehumidification fresh air group comprise the pyrosol dehumidifying circulatory system and the cryogenic fluid dehumidifying circulatory system; The pyrosol dehumidifying circulatory system links to each other by coupled heat exchanger 9 with the cryogenic fluid dehumidifying circulatory system.
The pyrosol dehumidifying circulatory system comprises high-temp regenerator sensible heat recoverer 1, high-temp regenerator 2, high-temp regenerator heater 3, high-temp regenerator solution circulation pump 4, high temperature concentrated solution pump 5, pyrosol regenerator 6, high temperature weak solution pump 7, high temperature dehumidifier 8, high temperature dehumidifier solution circulation pump 10 and high temperature dehumidifier sensible heat recoverer 11.
At the top of high-temp regenerator 2 spray thrower I 21 is set, spray liquid feeder I22 is set in the bottom of high-temp regenerator 2; At the top of high temperature dehumidifier 8 spray thrower II 81 is set, spray liquid feeder II 82 is set in the bottom of high temperature dehumidifier 8.
The outlet of spray liquid feeder I 22 is successively by being connected with spray thrower I 21 behind high-temp regenerator heater 3 and the high-temp regenerator solution circulation pump 4; Be respectively equipped with thermal source inlet pipe 31 and thermal source on the regenerator heater 3 and go out pipe 32, thermal source inlet pipe 31 and thermal source go out pipe 32 and are connected with the two ends of regenerator heater 3 inner coil pipes respectively.Another outlet of spray liquid feeder I 22 is connected with the entrance of spray liquid feeder II 82 by high temperature concentrated solution pump 5, pyrosol regenerator 6 successively.
The outlet of spray liquid feeder II 82 is connected with spray thrower II 81 by coupled heat exchanger 9 and high temperature dehumidifier solution circulation pump 10 successively.Another outlet of spray liquid feeder II 82 is connected with the entrance of spray liquid feeder I 22 by high temperature weak solution pump 7, pyrosol regenerator 6 successively;
The cryogenic fluid dehumidifying circulatory system comprises low-temperature regenerator sensible heat recoverer 12, low-temperature regenerator 13, low-temperature regenerator solution circulation pump 14, low temperature concentrated solution pump 15, cryogenic fluid regenerator 16, low temperature weak solution pump 17, low temperature dehumidification device 18, low temperature dehumidification device cooler 19 and low temperature dehumidification device solution circulation pump 20.
At the top of low-temperature regenerator 13 spray thrower III131 is set, spray liquid feeder III132 is set in the bottom of low-temperature regenerator 13; At the top of low temperature dehumidification device 18 spray thrower IV 181 is set, spray liquid feeder IV 182 is set in the bottom of low temperature dehumidification device 18.
The outlet of spray liquid feeder III132 is successively by being connected with spray thrower III131 behind coupled heat exchanger 9 and the low-temperature regenerator solution circulation pump 14; Another outlet of spray liquid feeder III132 is successively by being connected with the entrance of spray liquid feeder IV 182 behind low temperature concentrated solution pump 15 and the cryogenic fluid regenerator 16.
An outlet of spray liquid feeder IV 182 is successively by being connected with the entrance of spray liquid feeder III132 behind low temperature weak solution pump 17 and the cryogenic fluid regenerator 16; Another outlet of spray liquid feeder IV 182 is successively by being connected with spray thrower IV 181 behind low temperature dehumidification device cooler 19 and the low temperature dehumidification device solution circulation pump 20.
Be respectively equipped with cooling water inlet pipe 191 and cooling water outlet tube 192 on the low temperature dehumidification device cooler 19, cooling water inlet pipe 191 and cooling water outlet tube 192 are connected with the two ends of low temperature dehumidification device cooler 19 inner coil pipes respectively.
Fresh inlet is aimed at respectively high-temp regenerator sensible heat recoverer 1, high temperature dehumidifier sensible heat recoverer 11 and low-temperature regenerator sensible heat recoverer 12, and wind exhausting outlet is aimed at respectively high-temp regenerator sensible heat recoverer 1 and low-temperature regenerator sensible heat recoverer 12; Low temperature dehumidification device 18 is aimed in the air-supply outlet.The air outlet of high-temp regenerator sensible heat recoverer 1 is aimed at the air inlet of high-temp regenerator 2, and the air outlet of high-temp regenerator 2 is aimed at the air inlet of high-temp regenerator sensible heat recoverer 1.The air outlet of high temperature dehumidifier sensible heat recoverer 11 is aimed at the air inlet of high temperature dehumidifier 8, the air outlet of high temperature dehumidifier 8 is aimed at the air inlet of high temperature dehumidifier sensible heat recoverer 11, and the air outlet of high temperature dehumidifier sensible heat recoverer 11 is aimed at the air inlet of low temperature dehumidification device 18.The air outlet of low-temperature regenerator sensible heat recoverer 12 is aimed at the air inlet of low-temperature regenerator 13, and the air outlet of low-temperature regenerator 13 is aimed at the air inlet of low-temperature regenerator sensible heat recoverer 12.
All fill lithium-bromide solution in the pyrosol dehumidifying circulatory system and the cryogenic fluid dehumidifying circulatory system, the mass concentration that is arranged in the lithium-bromide solution of the pyrosol dehumidifying circulatory system is 55~60%, and the mass concentration that is arranged in cryogenic fluid dehumidifying circulatory system lithium-bromide solution is 45~50%.
Entering from thermal source inlet pipe 31 in the regenerator heater 3 is that temperature is 95 ℃ of thermals source (for example hot water), and flowing into from cooling water inlet pipe 191 in the low temperature dehumidification device coolers 19 is that temperature is 30 ℃ normal temperature cooling water.
Specific works during dual-effect solution dehumidification fresh air group actual motion of the present invention thes contents are as follows:
1, new wind enters high-temp regenerator sensible heat recoverer 1, carry out sensible heat transfer with the air draft from high-temp regenerator 2, enter high-temp regenerator 2 after being warmed, carry out the caloic exchange with the dehumidification solution that sprays from the spray thrower I 21 that is positioned at high-temp regenerator 2 tops, moisture under the poor effect of steam partial pressure in the dehumidification solution shifts to new wind, so that new rheumatism degree increase becomes high-temp regenerator 2 air drafts, air draft enters high-temp regenerator sensible heat recoverer 1 again, carry out Exchange of apparent heat with the new wind that has just entered, drain into environment after being lowered the temperature.
2, the dehumidification solution in the high-temp regenerator 2 flows out from the outlet of the spray liquid feeder I 22 that is positioned at high-temp regenerator 2 bottoms, enters in the high-temp regenerator heater 3 high temperature heat source (95 ℃) heating that is flowed into from thermal source inlet pipe 31 again; Dehumidification solution is delivered to the spray thrower I 21 that is positioned at high-temp regenerator 2 tops by high-temp regenerator solution circulation pump 4 again; Spray thrower I 21 sprays dehumidification solution downwards, dehumidification solution carries out the caloic exchange with the new wind that enters high-temp regenerator 2, moisture under the poor effect of steam partial pressure in the dehumidification solution shifts to new wind, so that dehumidification solution concentration increases, temperature comes back to the spray liquid feeder I 22 that is positioned at high-temp regenerator 2 bottoms after reducing.
3, the dense dehumidification solution that generates in high-temp regenerator 2 flows out from the taphole of spray liquid feeder I 22, flow to pyrosol regenerator 6 by high temperature concentrated solution pump 5, in pyrosol regenerator 6, carry out backheat (cooling) with the rare dehumidification solution from high temperature dehumidifier 8, flow to the high temperature dehumidifier 8 from pyrosol regenerator 6 again.Rare dehumidification solution in the high temperature dehumidifier 8 flows out from the taphole of the spray liquid feeder II 82 that is positioned at high temperature dehumidifier 8 bottoms, flow to pyrosol regenerator 6 by high temperature weak solution pump 7, in pyrosol regenerator 6, carry out backheat (intensification) with the dense dehumidification solution from high-temp regenerator 2, flow to the spray liquid feeder I 22 that is positioned at high-temp regenerator 2 bottoms from pyrosol regenerator 6 again.
4, new wind enters high temperature dehumidifier sensible heat recoverer 11, carry out sensible heat transfer with the air draft from high temperature dehumidifier 8, enter high temperature dehumidifier 8 after being warmed, carry out the caloic exchange with the dehumidification solution that sprays from the spray thrower II 81 that is positioned at high temperature dehumidifier 8 tops, water vapour under the poor effect of steam partial pressure in the new wind shifts to dehumidification solution, so that new rheumatism degree reduces to become 8 air drafts of high temperature dehumidifier, air draft enters high temperature dehumidifier sensible heat recoverer 11 again, carry out Exchange of apparent heat with the new wind that has just entered, entered low temperature dehumidification device 18 after the cooling, carry out the caloic exchange with the dehumidification solution that sprays from the spray thrower IV 181 that is positioned at low temperature dehumidification device 18 tops, water vapour under the poor effect of steam partial pressure in the air draft shifts to dehumidification solution, so that its humidity further reduces, discharging from low temperature dehumidification device 18 at last becomes air-supply, thereby finishes the whole dehumidification treatments process of new wind.
5, the dehumidification solution that is arranged in the spray liquid feeder II 82 of high temperature dehumidifier 8 bottoms enters coupled heat exchanger 9, by the dehumidification solution cooling from low-temperature regenerator 13, delivering to the spray thrower II 81 that is positioned at high temperature dehumidifier 8 tops by high temperature dehumidifier solution circulation pump 10 again sprays downwards, carry out the caloic exchange with the new wind that enters high temperature dehumidifier 8, moisture under the poor effect of steam partial pressure in the new wind shifts to dehumidification solution, so that dehumidification solution concentration comes back to the spray liquid feeder II 82 that is arranged in high temperature dehumidifier 8 bottoms after diminishing.
6, new wind enters low-temperature regenerator sensible heat recoverer 12, carry out sensible heat transfer with the air draft from low-temperature regenerator 13, enter low-temperature regenerator 13 after being warmed, with spray the dehumidification solution that gets off from the spray thrower III131 that is positioned at low-temperature regenerator 13 tops and carry out caloic exchange, moisture under the poor effect of steam partial pressure in the dehumidification solution shifts to new wind, so that new rheumatism degree increase becomes low-temperature regenerator 13 air drafts, air draft enters low-temperature regenerator sensible heat recoverer 12 again, carry out Exchange of apparent heat with the new wind that has just entered, drain into environment after being lowered the temperature.
7, the dehumidification solution that is arranged in the spray liquid feeder III132 of low-temp recovery 13 bottoms enters coupled heat exchanger 9, by the dehumidification solution heating from high temperature dehumidifier 8, delivering to the spray thrower III131 that is positioned at low-temperature regenerator 13 tops by low-temperature regenerator solution circulation pump 14 again sprays downwards, carry out the caloic exchange with the new wind that enters low-temperature regenerator 13, moisture under the poor effect of steam partial pressure in the dehumidification solution shifts to new wind, so that dehumidification solution concentration comes back to the spray liquid feeder III132 that is arranged in low-temperature regenerator 13 bottoms after increasing.
8, the dense dehumidification solution that generates in low-temperature regenerator 13 flows out from the taphole of spray liquid feeder III132; Flow to cryogenic fluid regenerator 16 by low temperature concentrated solution pump 15, in cryogenic fluid regenerator 16, carry out backheat (cooling) with rare dehumidification solution from low temperature dehumidification device 18, flow to the low temperature dehumidification device 18 from cryogenic fluid regenerator 16 again.Rare dehumidification solution in the low temperature dehumidification device 18 flows out from the spray liquid feeder IV 182 that is arranged in low temperature dehumidification device 18 bottoms, flow to cryogenic fluid regenerator 16 by low temperature weak solution pump 17, in cryogenic fluid regenerator 16, carry out backheat (intensification) with the dense dehumidification solution from low-temperature regenerator 13, flow to the spray liquid feeder III132 that is arranged in low-temperature regenerator 13 bottoms from cryogenic fluid regenerator 16 again.
9, dehumidification solution in the low temperature dehumidification device 18 flows out from the spray liquid feeder IV 182 that is arranged in low temperature dehumidification device 18 bottoms, enter low temperature dehumidification device cooler 19, cooled by normal temperature cooling water (30 ℃), delivering to the spray thrower IV 181 that is arranged in low temperature dehumidification device 18 tops by low temperature dehumidification device solution circulation pump 20 again sprays downwards, carry out the caloic exchange with indirect from the air draft of high temperature dehumidifier 8, moisture under the poor effect of steam partial pressure in the air draft shifts to dehumidification solution, so that dehumidification solution concentration comes back to the spray liquid feeder IV 182 that is arranged in low temperature dehumidification device 18 bottoms after diminishing.
The operating temperature of each critical piece is followed successively by high-temp regenerator 2, high temperature dehumidifier 8, low-temperature regenerator 13 and low temperature dehumidification device 18 by arranging from big to small during dual-effect solution dehumidification fresh air group work of the present invention.In addition, when system moved, the pyrosol dehumidifying circulatory system had higher dehumidification solution concentration to avoid solution to cause the excessive situation of solution water vapor partial pressure because of superheated in regenerator; The cryogenic fluid dehumidifying circulatory system has lower dehumidification solution concentration and is complementary with the thermal source quality that the heat extraction with the high temperature dehumidifier is provided.
Embodiment 2, a kind of dual-effect solution dehumidification fresh air group as shown in Figure 3, are to have set up cover low-temperature regenerator heater 101 and a bypass line 104 thereof with embodiment 1 difference.Two imports of low-temperature regenerator heater 101 connect respectively the thermal source outlet of high-temp regenerator heater 3 and the taphole that coupled heat exchanger 9 leads to low-temperature regenerator 13, two outlets of low-temperature regenerator heater 101 connect respectively the spray thrower III131 and the thermal source that are positioned at low-temperature regenerator 13 tops and go out pipe 32, low-temperature regenerator heater 101 two ends arrange a bypass line 104, and control valve I 102 and control valve II 103 are set respectively on its straight-through pipeline and the bypass line 104.That is, go out on the pipe 32 low-temperature regenerator heater 101 and control valve I 102 are set respectively at thermal source; At low-temperature regenerator heater 101 two ends a bypass line 104 is set, at bypass line 104 control valve II 103 is set; The outlet of spray liquid feeder III132 is successively by being connected with spray thrower III131 behind coupled heat exchanger 9, low-temperature regenerator heater 101 and the low-temperature regenerator solution circulation pump 14.
When system moves, when the heat that provides when coupled heat exchanger 9 can satisfy requiring of low-temperature regenerator 13, control valve I 102 closed, and control valve II 103 is held open, low-temperature regenerator heater 101 is not worked at this moment, and running situation and embodiment one are identical; When the heat that provides when coupled heat exchanger 9 can not satisfy requiring of low-temperature regenerator 13, control valve I 102 is opened, and by regulating the heating load of its aperture control low-temperature regenerator heater 101, low-temperature regenerator heater 101 plays carry out the effect of post bake from the dehumidification solution of low-temperature regenerator 13 at this moment, so that the deficiency of coupled heat exchanger 9 heat that provided to be provided, simultaneously also high temperature heat source has been carried out cascaded utilization of energy, all the other ruuning situations and embodiment 1 are identical.
At last, it is also to be noted that what more than enumerate only is several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.

Claims (4)

1. the dual-effect solution dehumidification fresh air group is characterized in that: comprise the pyrosol dehumidifying circulatory system and the cryogenic fluid dehumidifying circulatory system; The described pyrosol dehumidifying circulatory system links to each other by coupled heat exchanger (9) with the cryogenic fluid dehumidifying circulatory system;
The described pyrosol dehumidifying circulatory system comprises high-temp regenerator sensible heat recoverer (1), high-temp regenerator (2), high-temp regenerator heater (3), high-temp regenerator solution circulation pump (4), high temperature concentrated solution pump (5), pyrosol regenerator (6), high temperature weak solution pump (7), high temperature dehumidifier (8), high temperature dehumidifier solution circulation pump (10) and high temperature dehumidifier sensible heat recoverer (11);
At the top of high-temp regenerator (2) spray thrower I (21) is set, in the bottom of high-temp regenerator (2) spray liquid feeder I (22) is set; At the top of high temperature dehumidifier (8) spray thrower II (81) is set, in the bottom of high temperature dehumidifier (8) spray liquid feeder II (82) is set;
An outlet of spray liquid feeder I (22) is successively by being connected with spray thrower I (21) behind high-temp regenerator heater (3) and the high-temp regenerator solution circulation pump (4); Be respectively equipped with thermal source inlet pipe (31) and thermal source on the described regenerator heater (3) and go out pipe (32), described thermal source inlet pipe (31) and thermal source go out pipe (32) and are connected with the two ends of regenerator heater (3) inner coil pipe respectively;
Another outlet of spray liquid feeder I (22) is connected with the entrance of spray liquid feeder II (82) by high temperature concentrated solution pump (5), pyrosol regenerator (6) successively;
An outlet of spray liquid feeder II (82) is connected with spray thrower II (81) by coupled heat exchanger (9) and high temperature dehumidifier solution circulation pump (10) successively;
Another outlet of spray liquid feeder II (82) is connected with the entrance of spray liquid feeder I (22) by high temperature weak solution pump (7), pyrosol regenerator (6) successively;
The described cryogenic fluid dehumidifying circulatory system comprises low-temperature regenerator sensible heat recoverer (12), low-temperature regenerator (13), low-temperature regenerator solution circulation pump (14), low temperature concentrated solution pump (15), cryogenic fluid regenerator (16), low temperature weak solution pump (17), low temperature dehumidification device (18), low temperature dehumidification device cooler (19) and low temperature dehumidification device solution circulation pump (20);
At the top of described low-temperature regenerator (13) spray thrower III (131) is set, in the bottom of low-temperature regenerator (13) spray liquid feeder III (132) is set; At the top of low temperature dehumidification device (18) spray thrower IV (181) is set, in the bottom of low temperature dehumidification device (18) spray liquid feeder IV (182) is set;
An outlet of spray liquid feeder III (132) is successively by being connected with spray thrower III (131) behind coupled heat exchanger (9) and the low-temperature regenerator solution circulation pump (14); Another outlet of spray liquid feeder III (132) is successively by being connected with the entrance of spray liquid feeder IV (182) behind low temperature concentrated solution pump (15) and the cryogenic fluid regenerator (16);
An outlet of spray liquid feeder IV (182) is successively by being connected with the entrance of spray liquid feeder III (132) behind low temperature weak solution pump (17) and the cryogenic fluid regenerator (16); Another outlet of spray liquid feeder IV (182) is successively by being connected with spray thrower IV (181) behind low temperature dehumidification device cooler (19) and the low temperature dehumidification device solution circulation pump (20);
Be respectively equipped with cooling water inlet pipe (191) and cooling water outlet tube (192) on the described low temperature dehumidification device cooler (19), described cooling water inlet pipe (191) and cooling water outlet tube (192) are connected with the two ends of low temperature dehumidification device cooler (19) inner coil pipe respectively;
Fresh inlet is aimed at respectively high-temp regenerator sensible heat recoverer (1), high temperature dehumidifier sensible heat recoverer (11) and low-temperature regenerator sensible heat recoverer (12), and wind exhausting outlet is aimed at respectively high-temp regenerator sensible heat recoverer (1) and low-temperature regenerator sensible heat recoverer (12); Low temperature dehumidification device (18) is aimed in the air-supply outlet;
The air outlet of described high-temp regenerator sensible heat recoverer (1) is aimed at the air inlet of high-temp regenerator (2), and the air outlet of high-temp regenerator (2) is aimed at the air inlet of high-temp regenerator sensible heat recoverer (1);
The air outlet of the fresh inlet back of high temperature dehumidifier sensible heat recoverer (11) is aimed at the air inlet of high temperature dehumidifier (8), the air outlet of high temperature dehumidifier (8) is aimed at the air inlet of high temperature dehumidifier sensible heat recoverer (11), and the air outlet of the air inlet back of high temperature dehumidifier sensible heat recoverer (11) is aimed at the air inlet of low temperature dehumidification device (18);
The air outlet of low-temperature regenerator sensible heat recoverer (12) is aimed at the air inlet of low-temperature regenerator (13), and the air outlet of described low-temperature regenerator (13) is aimed at the air inlet of low-temperature regenerator sensible heat recoverer (12).
2. dual-effect solution dehumidification fresh air group according to claim 1, it is characterized in that: described dual-effect solution dehumidification fresh air group also comprises low-temperature regenerator heater (101), goes out on the pipe (32) low-temperature regenerator heater (101) and control valve I (102) are set respectively at thermal source; At low-temperature regenerator heater (101) two ends a bypass line (104) is set, at bypass line (104) control valve II (103) is set;
An outlet of spray liquid feeder III (132) is connected with spray thrower III (131) by behind coupled heat exchanger (9), low-temperature regenerator heater (101) and the low-temperature regenerator solution circulation pump (14) successively.
3. dual-effect solution dehumidification fresh air group according to claim 1 and 2, it is characterized in that: all fill dehumidification solution in the described pyrosol dehumidifying circulatory system and the cryogenic fluid dehumidifying circulatory system, the dehumidification solution concentration that is arranged in the pyrosol dehumidifying circulatory system is higher than the dehumidification solution concentration of the cryogenic fluid dehumidifying circulatory system.
4. dual-effect solution dehumidification fresh air group according to claim 3, it is characterized in that: described dehumidification solution is lithium-bromide solution; The mass concentration that is arranged in the lithium-bromide solution of the pyrosol dehumidifying circulatory system is 55~60%, and the mass concentration that is arranged in cryogenic fluid dehumidifying circulatory system lithium-bromide solution is 45~50%.
CN 201110141870 2011-05-28 2011-05-28 Dual-effect solution dehumidification fresh air unit CN102261702B (en)

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