CN104180523B - A kind of flue gas waste heat recovery apparatus - Google Patents
A kind of flue gas waste heat recovery apparatus Download PDFInfo
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- CN104180523B CN104180523B CN201410409938.9A CN201410409938A CN104180523B CN 104180523 B CN104180523 B CN 104180523B CN 201410409938 A CN201410409938 A CN 201410409938A CN 104180523 B CN104180523 B CN 104180523B
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 239000003546 flue gas Substances 0.000 title claims abstract description 86
- 238000011084 recovery Methods 0.000 title claims abstract description 23
- 239000002918 waste heat Substances 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 328
- 239000006096 absorbing agent Substances 0.000 claims abstract description 116
- 230000008676 import Effects 0.000 claims abstract description 49
- 238000005507 spraying Methods 0.000 claims abstract description 42
- 239000007921 spray Substances 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 89
- 239000007789 gas Substances 0.000 claims description 73
- 230000002411 adverse Effects 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 9
- 239000000243 solution Substances 0.000 description 151
- 230000009102 absorption Effects 0.000 description 26
- 238000010521 absorption reaction Methods 0.000 description 26
- 238000001816 cooling Methods 0.000 description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 8
- 239000003345 natural gas Substances 0.000 description 7
- 238000007791 dehumidification Methods 0.000 description 6
- 239000000446 fuel Substances 0.000 description 6
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 4
- 239000003517 fume Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 3
- 239000006193 liquid solution Substances 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Landscapes
- Treating Waste Gases (AREA)
Abstract
The present invention relates to a kind of flue gas waste heat recovery apparatus, it includes flue gas unit, generator unit, condenser unit, absorber unit, return pipe and feed pipe；Flue gas unit exports be linked in sequence generator unit, condenser unit and absorber unit, to form flue gas heat exchange path；Generator unit outlet is connected with Solutions Solution heat exchanger import, and absorber unit outlet is divided into two-way：One tunnel is connected with solution water- to-water heat exchanger import by solution spraying pump with after the merging of Solutions Solution heat exchanger exit, and its outlet is connected with the solution spraying mechanism in absorber unit；Separately lead up to solution circulation pump to be connected with Solutions Solution heat exchanger import, its outlet is connected with the weak solution spraying mechanism of generator unit, to form solution recuperated cycle loop；Condenser unit outlet is connected with water water- to-water heat exchanger import by solidifying Water spray pump, and its outlet is connected with the solidifying watering mechanism of condenser unit, to form solidifying water recuperated cycle loop；Return pipe is connected with water water- to-water heat exchanger unit and solution water- to-water heat exchanger import, and feed pipe is connected with water water- to-water heat exchanger and solution water- to-water heat exchanger import.
Description
Technical field
The present invention relates to a kind of heating plant is and in particular to one kind can reclaim institute's shape after the fuel combustions such as natural gas, oil
The flue gas waste heat recovery apparatus containing vapor in wet flue gas and its heat becoming.
Background technology
The hydrogen content of the fuel such as natural gas, oil is very high, thus contains substantial amounts of water vapour in the flue gas discharged after burning.Than
In the flue gas of natural gas boiler, the volume composition of water vapour, close to 20%, is the major vectors of flue gas heat.Every according to statistics
1Nm3Natural gas can produce 1.55kg water vapour, and latent heat is about 3600kJ/Nm3, account for 10% left side of natural gas low heat valve
Right.Therefore, the recovery of this part water vapour and its heat (mainly latent heat) is economically highly significant.
The patent of invention of Publication No. CN1414288 disclose a kind of recycle combustion gas, water steams in smoke of oil-fuel boiler
The heating plant of vapour latent heat, it include boiler, condensate and heat exchanger, heating tube and by generator, solution heat exchanger, absorber,
The absorption heat pump that vaporizer, condenser and connecting tube are constituted, using flue gas as low-temperature heat source, reclaims cigarette using absorption heat pump
Gas waste heat.But this heating plant complex structure, device fabrication difficulty is big, and high cost, particularly flue gas condensing heat exchanger are because passing
Hot coefficient is low, causes equipment volume huge, consumptive material is very big with cost.
The patent of invention of Publication No. CN102242946A discloses a kind of utilization absorption heat pump Mist heat recovering
Central heating system, it is improved to above-mentioned heating plant, instead of dividing wall type with gas-water direct-contact heat exchanger
Heat exchanger, considerably reduces volume and cost, but the manufacture difficulty of absorption heat pump and cost is still larger.In addition in this collection
In middle heating system, discharge flue gas is in saturation, easily causes the dewing corrosion of back-end ductwork.
Additionally, the patent of invention of Publication No. CN101922799A disclose a kind of based on more than the flue gas of solution absorption cycle
Heat recovery system, this flue gas waste heat recovery system is made up of generator, condenser and absorber, for natural gas fume afterheat
Recovery with moisture.High-temperature flue gas from boiler or gas engine heat concentrate solution in generator, and high-humidity gas fume is in condensation
With cooling water heat exchange in device, it is cooled to below dew point temperature, separate out condensed water.Concentrated solution through solution-solution heat exchanger and
The vapor absorbing in absorber in flue gas after solution-water- to-water heat exchanger cooling is changed into weak solution.This patent is to above-mentioned two
The improvement of patent, due to decreasing heat exchange link, equipment volume is greatly reduced with cost, and the flue gas of discharge is also at unsaturation shape
State, solves the etching problem of back-end ductwork.But this patent with fume high-temperature section heat as generator driving heat source, and cigarette
Temperature degree is affected by its headend equipment (as boiler) operating condition, and fluctuation is larger, and when flue-gas temperature is relatively low, solution cannot
Effectively concentrate, just do not reach the purpose of efficient recovery waste heat, therefore this patent is only applicable to the relatively high and stable field of exhaust gas temperature
Close.
Content of the invention
For the problems referred to above, the purpose of the present invention be a kind of can reclaim the fuel combustions such as natural gas, oil after formed
Flue gas waste heat recovery apparatus containing vapor in wet flue gas and its heat.
For achieving the above object, the present invention takes technical scheme below：A kind of flue gas waste heat recovery apparatus, its feature exists
In this device includes a flue gas unit, a generator unit, a condenser unit, an absorber unit, a return pipe and a confession
Water pipe；Wherein, the exhanst gas outlet of described flue gas unit is connected with the gas approach of described generator unit, described generator unit
Exhanst gas outlet be connected with the gas approach of described condenser unit, the exhanst gas outlet of described condenser unit and described absorber
The gas approach of unit connects, to form flue gas heat exchange path；Concentrated solution outlet and a solution-solution of described generator unit
The concentrated solution import of heat exchanger connects, and the taphole of described absorber unit is divided into two-way：One tunnel is changed with described solution-solution
The concentrated solution outlet of hot device is connected with the solution inlet port of one solution-water- to-water heat exchanger by a solution spraying pump after merging, described molten
The taphole of liquid-water- to-water heat exchanger is connected with the solution spraying mechanism import in described absorber unit；Separately lead up to one molten
Liquid circulating pump is connected with the dilute solution inlet of described solution-solution heat exchanger, the weak solution outlet of described solution-solution heat exchanger
It is connected with the weak solution spraying mechanism import of described generator unit, to form solution recuperated cycle loop；Described condenser list
The solidifying water out of unit is connected with the solidifying water inlet of a water-water heat exchanger by a solidifying Water spray pump, the coagulating of described water-water heat exchanger
Water out is connected with the solidifying watering mechanism import of described condenser unit, to form solidifying water recuperated cycle loop；Described backwater
Pipe is connected with the backwater import of described water-water heat exchanger unit and solution-water- to-water heat exchanger, and described feed pipe is changed with described water-water
The service water outlet of hot device and solution-water- to-water heat exchanger connects.
In a preferred embodiment, described generator unit is made up of the above generator of one-level, and works as described generation
When device is more than two-stage, the exhanst gas outlet of previous stage generator is sequentially connected in series with the gas approach of rear stage generator；Meanwhile,
The concentrated solution outlet of first-stage generator is connected with the concentrated solution import of described solution-solution heat exchanger, described solution-solution heat exchange
The weak solution outlet of device is connected with the weak solution spraying mechanism import in final stage generator, and the solution of described final stage generator goes out
Mouth is connected with the solution spraying mechanism import of penult generator by generator interstage pumps, analogizes forward successively；Described condensation
Device unit is made up of the above condenser of one-level, and when described condenser is more than two-stage, the exhanst gas outlet of previous stage condenser
It is sequentially connected in series with the gas approach of rear stage condenser；Meanwhile, the solidifying water out of condenser described in every one-level is all by described in one
Solidifying Water spray pump is connected with the solidifying water inlet of corresponding described water-water heat exchanger；The solidifying water out of each described water-water heat exchanger
With the solidifying watering mechanism import in corresponding described condenser；Described absorber unit is made up of the above absorber of one-level, and
When described absorber is more than two-stage, the gas approach of the exhanst gas outlet of previous stage absorber and rear stage absorber is gone here and there successively
Connection；Meanwhile, the taphole of absorber described in every one-level is divided into two branch roads, and wherein one branch road of first order absorber leads to
The dilute solution inlet crossing described solution circulation pump with described solution-solution heat exchanger is connected, wherein one branch road of final stage absorber
By described solution spraying pump and final stage solution-water- to-water heat exchanger after merging with the concentrated solution outlet of described solution-solution heat exchanger
Solution inlet port connect, the solution spraying machine in the taphole of described final stage solution-water- to-water heat exchanger and described final stage absorber
Structure import connects；Another branch road of described first order absorber passes through first after merging with wherein one branch road of second level absorber
Level solution spraying pump is connected with the solution inlet port of first order solution-water- to-water heat exchanger, the solution of described first order solution-water- to-water heat exchanger
Outlet is connected with the solution spraying mechanism import in described first order absorber, and remaining in addition to described final stage absorber is at different levels
Absorber is as the same.
In a preferred embodiment, described flue gas unit is mainly made up of a burner and a combustor, described combustion
Burner is connected with described combustor, and the exhanst gas outlet of described combustor is connected with the gas approach of described generator unit；Described
In generator unit, condenser unit and/or absorber unit, flue gas is vertical with the heat exchange liquid form of shower water or solution
Countercurrently, one or more of level adverse current, distributary, following current and mixed flow.
In a preferred embodiment, when described condenser and/or described absorber are one-level, described return pipe and
Feed pipe adopts one of following heat exchange connected mode：1) described return pipe divides two-way to be connected in parallel described water-water heat exchanger and molten
The hot water inlet of liquid-water- to-water heat exchanger, described feed pipe divides two-way to be connected in parallel described water-water heat exchanger and solution-water- to-water heat exchanger
Hot water outlet；2) described return pipe is connected with the hot water inlet of described water-water heat exchanger, the hot water of described water-water heat exchanger
Outlet is connected with the hot water inlet of described solution-water- to-water heat exchanger, the hot water outlet of described solution-water- to-water heat exchanger and described feed pipe
Connect；3) described return pipe is connected with the hot water inlet of described solution-water- to-water heat exchanger, and the hot water of described solution-water- to-water heat exchanger goes out
Mouth is connected with the hot water inlet of described water-water heat exchanger, and the hot water outlet of described water-water heat exchanger is connected with described feed pipe；
When described condenser and/or described absorber be two-stage with higher level when, described return pipe and feed pipe adopt following
One of heat exchange connected mode：1) described return pipe divides three road more parallels water-water heat exchanger at different levels and solution-water- to-water heat exchanger at different levels
Hot water inlet, described feed pipe divides three road more parallels water-water heat exchanger at different levels and the hot water of solution-water- to-water heat exchanger at different levels to go out
Mouthful；2) described return pipe is connected with the hot water inlet of first order water-water heat exchanger, remaining water-water heat exchanger at different levels and at different levels molten
The hot water outlet of liquid-water- to-water heat exchanger and hot water inlet are linked in sequence successively, the heat of described feed pipe and final stage solution-water- to-water heat exchanger
Water out connects；3) described return pipe is connected with the hot water inlet of final stage solution-water- to-water heat exchanger, remaining solution at different levels-water heat exchange
The hot water outlet of device and water-water heat exchanger at different levels and hot water inlet are linked in sequence successively, and described feed pipe is changed with first order water-water
The hot water outlet of hot device connects.
A kind of flue gas waste heat recovery apparatus it is characterised in that this device include a flue gas unit, a generator unit, one
Condenser unit, an absorber unit, a return pipe and a feed pipe；Wherein, the exhanst gas outlet of described flue gas unit with described
The gas approach of generator unit connects, and the exhanst gas outlet of described generator unit is connected with the gas approach of described condenser unit
Connect, the exhanst gas outlet of described condenser unit is connected with the gas approach of described absorber unit, to form flue gas heat exchange path；
The concentrated solution outlet of described generator unit is connected with the concentrated solution import of a solution-solution heat exchanger, and described solution-solution changes
The concentrated solution outlet of hot device is connected with the solution spraying mechanism import in described absorber unit by a solution spraying pump；Described
The taphole of absorber unit is connected with the dilute solution inlet of described solution-solution heat exchanger by a solution circulation pump, institute
The weak solution outlet stating solution-solution heat exchanger is connected with the weak solution spraying mechanism import in described generator unit, with shape
Become solution recuperated cycle loop；Described return pipe respectively with the gas-water heat exchanger being arranged within described condenser unit and
The backwater import being arranged on solution-water- to-water heat exchanger within described absorber unit connects, described feed pipe respectively with described cigarette
The service water outlet of air-water heat exchanger and described solution-water- to-water heat exchanger connects.
In a preferred embodiment, described generator unit is made up of the above generator of one-level, and works as described generation
When device is more than two-stage, the exhanst gas outlet of previous stage generator is sequentially connected in series with the gas approach of rear stage generator；Meanwhile,
The concentrated solution outlet of first-stage generator is connected with the concentrated solution import of described solution-solution heat exchanger, described solution-solution heat exchange
The weak solution outlet of device is connected with the weak solution spraying mechanism import in final stage generator, and the solution of described final stage generator goes out
Mouth is connected with the solution spraying mechanism import of penult generator by generator interstage pumps, analogizes forward successively；Described condensation
Device unit is made up of the above condenser of one-level, and when described condenser is more than two-stage, the exhanst gas outlet of previous stage condenser
It is sequentially connected in series with the gas approach of rear stage condenser；Described absorber unit is made up of the above absorber of one-level, and when described
When absorber is more than two-stage, the exhanst gas outlet of previous stage absorber is sequentially connected in series with the gas approach of rear stage absorber；With
When, the concentrated solution of described solution-solution heat exchanger exports by molten in described solution spraying parallel connection of pumps described absorber at different levels
Liquid spraying mechanism import, it is molten with described that the taphole of described absorbers at different levels passes through described solution circulation pump after being merged into a road
The dilute solution inlet of liquid-solution heat exchanger connects.
In a preferred embodiment, described flue gas unit is mainly made up of a burner and a combustor, described combustion
Burner is connected with described combustor, and the exhanst gas outlet of described combustor is connected with the gas approach of described generator unit；Described
In generator unit and/or absorber unit, flue gas and the heat exchange liquid form of shower water or solution are vertical adverse current, level is inverse
One or more of stream, distributary, following current and mixed flow.
In a preferred embodiment, when described condenser and/or described absorber are one-level, described return pipe and
Feed pipe adopts one of following heat exchange connected mode：1) described return pipe divides two-way to be connected in parallel described water-water heat exchanger and molten
The hot water inlet of liquid-water- to-water heat exchanger, described feed pipe divides two-way to be connected in parallel described water-water heat exchanger and solution-water- to-water heat exchanger
Hot water outlet；2) described return pipe is connected with the hot water inlet of described water-water heat exchanger, the hot water of described water-water heat exchanger
Outlet is connected with the hot water inlet of described solution-water- to-water heat exchanger, the hot water outlet of described solution-water- to-water heat exchanger and described feed pipe
Connect；3) described return pipe is connected with the hot water inlet of described solution-water- to-water heat exchanger, and the hot water of described solution-water- to-water heat exchanger goes out
Mouth is connected with the hot water inlet of described water-water heat exchanger, and the hot water outlet of described water-water heat exchanger is connected with described feed pipe；
When described condenser and/or described absorber be two-stage with higher level when, described return pipe and feed pipe adopt following
One of heat exchange connected mode：1) described return pipe divides three road more parallels water-water heat exchanger at different levels and solution-water- to-water heat exchanger at different levels
Hot water inlet, described feed pipe divides three road more parallels water-water heat exchanger at different levels and the hot water of solution-water- to-water heat exchanger at different levels to go out
Mouthful；2) described return pipe is connected with the hot water inlet of first order water-water heat exchanger, remaining water-water heat exchanger at different levels and at different levels molten
The hot water outlet of liquid-water- to-water heat exchanger and hot water inlet are linked in sequence successively, the heat of described feed pipe and final stage solution-water- to-water heat exchanger
Water out connects；3) described return pipe is connected with the hot water inlet of final stage solution-water- to-water heat exchanger, remaining solution at different levels-water heat exchange
The hot water outlet of device and water-water heat exchanger at different levels and hot water inlet are linked in sequence successively, and described feed pipe is changed with first order water-water
The hot water outlet of hot device connects.
Due to taking above technical scheme, it has advantages below to the present invention：1st, the present invention operationally, can make molten
Liquid, solidifying water and flue gas direct contact heat transfer, heat exchange fully, saves heat-transfer area and metal consumption, and equipment volume is with cost significantly
Reduce, waste heat recovery volume improves.2nd, the present invention utilizes the high-temperature flue gas that the fuel such as direct combustion gas, oil produces to drive, and reclaims
Waste heat amount is not affected by input gas temperature, and runing adjustment is flexible.3rd, the water vapour that the present invention discharges in flue gas is in overheated shape
State, solves condensation and the etching problem of back-end ductwork.4th, the vapour latent heat in the main recovered flue gas of the present invention, fume emission
Temperature is high, does not affect the spontaneous draught capacity of chimney and the high-altitude diffusion of pollutant.
Brief description
To carry out detailed description to the present invention below in conjunction with accompanying drawing.It should be appreciated, however, that being provided only more of accompanying drawing
Understand the present invention well, they should not be interpreted as limitation of the present invention.
Fig. 1 is the device flow chart of vertical adverse current for each heat exchanger components of the present invention；
Fig. 2 is the device flow chart of level adverse current for each heat exchanger components of the present invention；
Fig. 3 is the device flow chart of distributary for each heat exchanger components of the present invention；
Fig. 4 is the device flow chart of mixed flow for each heat exchanger components of the present invention；
Fig. 5 is the series system one of hot water of the present invention (or cooling water)；
Fig. 6 is the series system two of hot water of the present invention (or cooling water)；
Fig. 7 adopts two-stage that the schematic diagram of form occurs for the present invention；
Fig. 8 adopts the schematic diagram of condensed in two stages form for the present invention；
Fig. 9 adopts the schematic diagram of two-stage absorpting form for the present invention；
Figure 10 adopts the schematic diagram of " inner-cooled " absorber for the present invention；
Figure 11 adopts the schematic diagram of " inner-cooled " condenser for the present invention.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is described in detail.
As shown in figure 1, the present invention is mainly changed by burner 1, combustor 2, generator 3, condenser 4, absorber 5, water-water
Hot device 6, solution-solution heat exchanger 7, solution-water- to-water heat exchanger 8, solidifying Water spray pump 9, solution circulation pump 10, solution spraying pump 11,
Hot water return pipe 12, hot water feeding pipe 13 and other connecting line composition.Wherein, burner 1 is connected with combustor 2, combustor 2
Exhanst gas outlet be connected with the gas approach of generator 3, the exhanst gas outlet of generator 3 is connected with the gas approach of condenser 4, cold
The exhanst gas outlet of condenser 4 is connected with the gas approach of absorber 5, to form flue gas heat exchange path.Meanwhile, generator 3 is dense molten
Liquid outlet is connected with the concentrated solution import of solution-solution heat exchanger 7, and solution is passed through in the concentrated solution outlet of solution-solution heat exchanger 7
Spray pump 11 is connected with the solution inlet port of solution-water- to-water heat exchanger 8, in the taphole of solution-water- to-water heat exchanger 8 and absorber 5
Solution spraying mechanism import connects, the taphole of absorber 5 pass through respectively solution circulation pump 10 and solution spraying pump 11 with molten
The solution inlet port of the dilute solution inlet of liquid-solution heat exchanger 7 and solution-water- to-water heat exchanger 8 connects, solution-solution heat exchanger 7 dilute
Taphole is connected with the weak solution spraying mechanism import in generator 3, to form solution recuperated cycle loop.Condenser 4
Solidifying water out is connected with the solidifying water inlet of water-water heat exchanger 6 by solidifying Water spray pump 9, the solidifying water out of water-water heat exchanger 6 and
Solidifying watering mechanism import in condenser 4 connects, to form solidifying water recuperated cycle loop.Hot water return pipe 12 is changed with water-water
The hot water inlet of hot device 6 and solution-water- to-water heat exchanger 8 connects, the hot water outlet of water-water heat exchanger 6 and solution-water- to-water heat exchanger 8 with
Hot water feeding pipe 13 connects.
The flue gas waste heat recovery apparatus that above-described embodiment provides, its workflow is as follows：
1) fuel and air pass through burner 1 burn in combustor 2 produce high-temperature flue gas 14 (water capacity 0.13kg/kg,
Note：Water capacity refers to the water vapour quality being mixed with the wet flue gas containing 1kg dry flue gas).
2) high-temperature flue gas 14 enter generator 3, with generator 3 in spray and under high temperature weak solution 23 directly contact change
Heat, makes high temperature weak solution 23 water vapour because being heated, high temperature weak solution 23 concentrates as concentrated solution 24 from generator 3 bottom
Flow out, the water vapour going out is mixed into the high-temperature flue gas 14 after heat exchange, make high-temperature flue gas 14 cooling humidification be changed into water capacity very high
High-humidity flue gas 15 (water capacity 1.04kg/kg).
3) high-humidity flue gas 15 enter condenser 4, with condenser 4 in spray and under condensed water 26 direct contact heat transfer,
High-humidity flue gas 15 heat release cooling and dehumidification is middle humidity flue gas 16 (water capacity 0.29kg/kg), the part in high-humidity flue gas 15
Water recovery is mixed into the condensed water 26 of spray for aqueous water, condensed water 26 absorb heat the latent heat of condensation of water vapour (predominantly) rise
Temperature, solidifying water 17 eductor condenser 4 of a part, a part enters water-water heat exchanger 6 heat release fall under the driving of solidifying Water spray pump 9
Temperature, enters back into condenser 4 heat absorption and heats up, so circulate.
4) in humidity flue gas 16 and outside come in containing entering spray in absorber 5, with absorber 5 together with wet flue gas 18
Under spray solution 25 carry out caloic exchange, further heat release cooling and dehumidification be low humidity flue gas 19 (water capacity 0.014kg/
Kg), low humidity flue gas 19 flows out absorber 5, is drained by chimney.
5) after water vapour in absorbing flue gas for the spray solution 25 in absorber 5, temperature raises, and concentration reduces, and becomes dilute
Solution 22.Weak solution 22 part enters after absorbing intensification in solution-solution heat exchanger 7 to become under the driving of solution circulation pump 10
For high temperature weak solution 23, high temperature weak solution 23 enters generator 3 and is heated concentration is concentrated solution 24.Concentrated solution 24 entrance solution-
After solution heat exchanger 7 heat release cooling, mix with another part of weak solution 22, mixed liquor enters under the driving of solution spraying pump 11
Entering solution-water- to-water heat exchanger 8 heat release cooling becomes spray solution 25, and spray solution 25 enters the water absorbing in flue gas in absorber 5
Steam becomes weak solution 22, so circulates.
6) 12 points of two-way of hot water return pipe, a road enters water-water heat exchanger 6 heat absorption and heats up, and another road enters solution-water and changes
Hot device 8 heat absorption heats up, and then two-way merges into and leads up to hot water feeding pipe 13 as hot water water supply supply heat user.
In a preferred embodiment, the needs according to structure arrangement, in the generator 3 of the present invention, condenser 4 with inhale
Receive in each part of device 5, the liquid form of flue gas and shower water or solution can for vertical adverse current (as shown in Figure 1), level adverse current (such as
Shown in Fig. 2), distributary (as shown in Figure 3), following current or mixed flow (existing following current part also has reflux fraction) (as shown in Figure 4) etc. each
Plant the heat exchange type of flow, also can include the part of multiple types of flow in the same apparatus, such as generator 3 is reverse-flow, and
Condenser 4 and absorber 5 are mixed-flow.
In a preferred embodiment, hot water return pipe 12 can divide two-way the in parallel water-water heat exchanger 6 and molten of entering
Liquid-water- to-water heat exchanger 8 heat absorption heats up (as shown in Figure 1) it is also possible to single channel is connected, and can be divided into following two forms：
Cascade one：Hot water return pipe 12 is connected with the hot water inlet of water-water heat exchanger 6, the heat of water-water heat exchanger 6
Water out is connected with the hot water inlet of solution-water- to-water heat exchanger 8, and the hot water outlet of solution-water- to-water heat exchanger 8 is with hot water feeding pipe 13 even
Connect (as shown in Figure 5).So hot water (or cooling water) backwater initially enters water-water heat exchanger 6, absorbs heat in water-water heat exchanger 6
Enter back into heat absorption in solution-water- to-water heat exchanger 8 after intensification to heat up.
Cascade two：Hot water return pipe 12 is connected with the hot water inlet of solution-water- to-water heat exchanger 8, solution-water- to-water heat exchanger 8
Hot water outlet be connected with the hot water inlet of water-water heat exchanger 6, the hot water outlet of water-water heat exchanger 6 is connected with hot water feeding pipe
(as shown in Figure 6).So hot water (or cooling water) backwater initially enters heat absorption in liquid-water- to-water heat exchanger 8 and enters back into water-water after heating up
In heat exchanger 6, heat absorption heats up.
In a preferred embodiment, the needs according to structure arrangement, the generator 3 in the present invention, condenser 4, suction
Receive device 5 and all can adopt single-stage or multi-level form.
Wherein, the form of multistage generation is：It is made up of the above generator of two-stage, the exhanst gas outlet of first-stage generator and two grades
The gas approach of generator connects, and the solution inlet port of first-stage generator is connected with the taphole of second-stage generator, class successively
Push away ....So high-temperature flue gas 14 first pass through first-stage generator, then pass through second-stage generator ... ..., send out finally by final stage
Raw device, in generators at different levels, progressively cooling humidifies；And weak solution 22 first passes through final stage generator, successively forward, finally lead to
Cross first-stage generator, progressively concentrate.As shown in fig. 7, this embodiment offers the form that a two-stage occurs, by first-stage generator
3a, second-stage generator 3b, generator interstage pumps 26 and connecting line etc. form.High-temperature flue gas 14 first pass around first-stage generator
3a, it is changed into the very high high-humidity flue gas of water capacity 15 through second-stage generator 3b cooling humidification again, and high temperature weak solution 23 is first
Enter second-stage generator 3b, enter first-stage generator 3a again under the driving of generator interstage pumps 26, being finally heated concentration is
Concentrated solution 24 flows out.In the present embodiment, in generators at different levels, flue gas and the type of flow of solution can be adverse current, following current, distributary
One or more of with mixed flow.
The form of multi-stage condensing is：It is made up of the above condenser of two-stage and the above water-water heat exchanger of two-stage, previous stage condenses
The exhanst gas outlet of device is connected with the gas approach of next stage condenser, and the condensation-water drain of every first-stage condenser and corresponding water-
The solidifying water inlet of water- to-water heat exchanger connects, and the solidifying water out of water-water heat exchanger is connected with the solidifying watering mechanism import in condenser.
So high-humidity flue gas 15 first pass through first-stage condenser, then pass through secondary condenser ... ..., finally by last condenser stage,
Progressively cooling and dehumidification in condensers at different levels；Hot water return pipe 12 is in parallel to enter water-water heat exchanger heat absorption intensifications at different levels, or series connection
First pass through final stage water-water heat exchanger and eventually pass forward the heat absorption intensification of one-level water-water heat exchanger more step by step.As shown in figure 8, this is real
Apply the form that example provides a condensed in two stages, by first-stage condenser 4a, secondary condenser 4b, one-level water-water heat exchanger 6a, two
Level water-water heat exchanger 6b, one-level coagulate the composition such as Water spray pump 9a, two grades of solidifying Water spray pump 9b and connecting line.High-humidity flue gas
15 first pass around first-stage condenser 4a cooling and dehumidification, then through secondary condenser 4b cooling and dehumidification, eventually become middle humidity flue gas
16 outflow secondary condenser 4b；In first-stage condenser 4a, a condensed water part is discharged, and a part coagulates Water spray pump 9a's in one-level
Drive lower entrance one-level water-water heat exchanger 6a heat release cooling, enter back into the heat absorption of first-stage condenser 4a and heat up, so circulation；Two grades
In condenser 4b, a condensed water part is discharged, and a part enters two grades of water-water heat exchange under the driving of two grades of solidifying Water spray pump 9b
Device 6b heat release is lowered the temperature, and enters back into secondary condenser 4b heat absorption and heats up, so circulates；Hot water return pipe 12 entrance one-level water in parallel-
Water- to-water heat exchanger 6a and two grades of water-water heat exchanger 6b heat absorptions heat up, or series connection first passes through two grades of water-water heat exchanger 6b again through one-level
Water-water heat exchanger 6a heat absorption heats up.In the present embodiment, in condensers at different levels, flue gas and the type of flow of shower water can be inverse
One or more of stream, following current, distributary and mixed flow.
The form of multistage absorption is：It is made up of the above absorber of two-stage and the above solution-water- to-water heat exchanger of two-stage, previous stage is inhaled
The exhanst gas outlet receiving device is connected with the gas approach of next stage absorber, and the taphole of every first absorber is molten with corresponding
The solution inlet port of liquid-water- to-water heat exchanger connects, and the taphole of solution-water- to-water heat exchanger is connected with the solution inlet port of absorber, previous
The taphole of level absorber is also connected with the taphole of next stage absorber, the taphole of first order absorber also with molten
The dilute solution inlet of liquid-solution heat exchanger 7 connects, the solution inlet port of final stage solution-water- to-water heat exchanger also with solution-solution heat exchanger
7 concentrated solution outlet connects.So middle humidity flue gas 16 and outside come in containing first passing through first order absorption together with wet flue gas 18
Device, then pass through secondary absorber ... ..., finally by final stage absorber, progressively dehumidification in absorbers at different levels；From generator
Concentrated solution first pass through final stage absorber, successively forward, finally by first absorber, progressively absorb water vapour and thinning；
Hot water return pipe 12 is in parallel to enter solution at different levels-water- to-water heat exchanger heat absorption intensification, or series connection first passes through final stage solution-water- to-water heat exchanger again
Eventually pass forward primary liquor-water- to-water heat exchanger heat absorption step by step to heat up.As shown in figure 9, this embodiment offers a two-stage inhaling
The form received, by first absorber 5a, secondary absorber 5b, primary liquor-water- to-water heat exchanger 8a, two grades of solution-water- to-water heat exchanger 8b,
Primary liquor spray pump 11a, two grades of solution spraying pump 11b and connecting line etc. form.Come in middle humidity flue gas 16 and outside
Enter first absorber 5a together containing wet flue gas 18, carry out caloic exchange with spray solution 25a, the water vapour in flue gas is by solution
Absorb and humidity reduction, then enter back into secondary absorber 5b, carry out caloic exchange with spray solution 25b, the water in flue gas steams
Vapour is absorbed by solution further and humidity reduces, and becomes low humidity flue gas 19, low humidity flue gas 19 flows out secondary absorber 5b, leads to
Cross chimney to drain；Spray solution 25a becomes weak solution 22a, weak solution 22a mono- after absorbing water vapour in first absorber 5a
Divide entrance generator 3, the weak solution that another part is come with secondary absorber 5b mixes, and mixed liquor is in primary liquor spray pump 11a
Driving under enter the cooling of primary liquor-water- to-water heat exchanger 8a heat release and become spray solution 25a, spray solution 25a enters one-level and inhales
The water vapour received in device 5a absorption flue gas becomes weak solution 22a, so circulates；Spray solution 25b is inhaled in secondary absorber 5b
Become weak solution 22b, weak solution 22b is partly into first absorber 5a, another part and generator 3 after receiving water vapour
Concentrated solution 24 mixes, and mixed liquor enters two grades of solution-water- to-water heat exchanger 8b heat release cooling under the driving of two grades of solution spraying pump 11b
Become spray solution 25b, the water vapour that spray solution 25b enters in secondary absorber 5b absorption flue gas becomes weak solution 22b, such as
This circulation；Hot water return pipe 12 is in parallel to enter primary liquor-water- to-water heat exchanger 8a and two grades of solution-water- to-water heat exchanger 8b heat absorption intensifications,
Or series connection first passes through two grades of solution-water- to-water heat exchanger 8b and heats up through primary liquor-water- to-water heat exchanger 8a heat absorption.In the present embodiment
In, in absorbers at different levels, flue gas and the type of flow of spray solution can be one or more of adverse current, following current, distributary and mixed flow.
In a preferred embodiment, solution used in the present invention can be lithium bromide water solution, calcium chloride water
In the mixture of salts solution or salts solution, or acid soluble in water or bases aqueous solution.
In a preferred embodiment, the needs according to structure arrangement, the generator 3 in the present invention, condenser 4, suction
Receiving device 5 can be all cavity structure heat exchanger or filling-material structure heat exchanger.
Absorber 5 in various embodiments above is " external-cooling type " structure, and ie in solution absorbs the water in flue gas in absorber 5
Hot water is transferred heat to, its advantage is in steam and its heat, then the solution-water- to-water heat exchanger 8 outside being arranged at absorber 5
Heat and mass transfer is strengthened respectively, and heat transfer coefficient is high, can reduce heat transfer area, facility compact, shortcoming is that flow process is complex, and molten
The power consumption of liquid spray pump 11 is larger.In a preferred embodiment, the absorber 5 in the present invention can also adopt " interior cold
Formula " structure, will be arranged at absorber 5 internal (as shown in Figure 10) by solution-water- to-water heat exchanger 8, such solution changes in solution-water
It is in membranaceous landing outside the heat-transfer pipe of hot device 8, absorb the water vapour in flue gas and its heat, and transfer heat in heat-transfer pipe
Hot water, heat and mass transfer is carried out simultaneously, thus having simplified pipeline, and reduces the power consumption of solution spraying pump 11.
Condenser 4 in various embodiments above is " external-cooling type " structure, and that is, shower water absorbs in flue gas in condenser 5
Hot water is transferred heat to, its advantage is in water vapour and its heat, then the water-water heat exchanger 6 outside being arranged at condenser 4
Heat and mass transfer is strengthened respectively, and heat transfer coefficient is high, can reduce heat transfer area, facility compact, shortcoming is that flow process is complex, and solidifying
The power consumption of Water spray pump 9 is larger.In a preferred embodiment, the condenser 4 in the present invention can also adopt " interior cold
Formula " structure, will be arranged at condenser 4 internal (as shown in figure 11) by gas-water heat exchanger, such flue gas is in gas-water heat exchange
Flow outside the heat-transfer pipe of device, be cooled and be cooled to below dew point temperature, the water vapour in flue gas is in heat transfer out-tubular condensing heat release, warm
In the heat transfer Bottomhole pressure of gas-water heat exchanger and intensification of absorbing heat, heat and mass transfer is carried out water simultaneously, thus having simplified pipeline,
And eliminate solidifying Water spray pump 9.
The various embodiments described above are only used for the purpose of the present invention, technical scheme and beneficial effect have been carried out further specifically
Bright, it is not limited to the present invention, all any modification, equivalent substitution and improvement within the spirit and principles in the present invention, done
Deng should be included within the scope of the present invention.
Claims (8)
1. a kind of flue gas waste heat recovery apparatus are it is characterised in that this device includes an a flue gas unit, generator unit, cold
Condenser unit, an absorber unit, a return pipe and a feed pipe；
Wherein, the exhanst gas outlet of described flue gas unit is connected with the gas approach of described generator unit, described generator unit
Exhanst gas outlet be connected with the gas approach of described condenser unit, the exhanst gas outlet of described condenser unit and described absorber
The gas approach of unit connects, to form flue gas heat exchange path；
The concentrated solution outlet of described generator unit is connected with the concentrated solution import of a solution-solution heat exchanger, described absorber
The taphole of unit is divided into two-way：A solution is passed through after merging with the concentrated solution outlet of described solution-solution heat exchanger in one tunnel
Spray pump is connected with the solution inlet port of one solution-water- to-water heat exchanger, the taphole of described solution-water- to-water heat exchanger and described absorber
Solution spraying mechanism import in unit connects；Separately lead up to the dilute of a solution circulation pump and described solution-solution heat exchanger
Solution inlet port connects, and the weak solution of described solution-solution heat exchanger exports the weak solution spraying mechanism with described generator unit
Import connects, to form solution recuperated cycle loop；
The solidifying water out of described condenser unit is connected with the solidifying water inlet of a water-water heat exchanger by a solidifying Water spray pump, institute
The solidifying watering mechanism import of the solidifying water out and described condenser unit of stating water-water heat exchanger is connected, to form solidifying water heat exchange
Closed circuit；
Described return pipe is connected with the backwater import of described water-water heat exchanger unit and solution-water- to-water heat exchanger, described feed pipe with
The service water outlet of described water-water heat exchanger and solution-water- to-water heat exchanger connects.
2. as claimed in claim 1 a kind of flue gas waste heat recovery apparatus it is characterised in that described generator unit by one-level with
Upper generator composition, and when described generator is more than two-stage, the exhanst gas outlet of previous stage generator and rear stage generator
Gas approach be sequentially connected in series；Meanwhile, the concentrated solution outlet of first order generator and the concentrated solution of described solution-solution heat exchanger
Import connects, and the weak solution outlet of described solution-solution heat exchanger and the weak solution spraying mechanism import in final stage generator connect
Connect, and the taphole of described final stage generator passes through the solution spraying mechanism import of generator interstage pumps and penult generator
Connect, analogize forward successively；
Described condenser unit is made up of the above condenser of one-level, and when described condenser is more than two-stage, previous stage condenses
The exhanst gas outlet of device is sequentially connected in series with the gas approach of rear stage condenser；Meanwhile, the solidifying water out of condenser described in every one-level
All connected with the solidifying water inlet of corresponding described water-water heat exchanger by Water spray pump solidifying described in；Each described water-water heat exchange
The solidifying water out of device and the solidifying watering mechanism import in corresponding described condenser；
Described absorber unit is made up of the above absorber of one-level, and when described absorber is more than two-stage, previous stage absorbs
The exhanst gas outlet of device is sequentially connected in series with the gas approach of rear stage absorber；Meanwhile, the taphole of absorber described in every one-level
It is divided into two branch roads, and wherein one branch road of first order absorber is changed with described solution-solution by described solution circulation pump
The dilute solution inlet of hot device connects, and wherein one branch road of final stage absorber is exported with the concentrated solution of described solution-solution heat exchanger
It is connected with the solution inlet port of final stage solution-water- to-water heat exchanger by described solution spraying pump after merging, described final stage solution-water heat exchange
The taphole of device is connected with the solution spraying mechanism import in described final stage absorber；Another of described first order absorber
Road passes through first order solution spraying pump and first order solution-water- to-water heat exchanger with wherein one branch road of second level absorber after merging
Solution inlet port connects, the solution spraying in the taphole of described first order solution-water- to-water heat exchanger and described first order absorber
Mechanism's import connects, and remaining absorber at different levels in addition to described final stage absorber are as the same.
3. as claimed in claim 1 a kind of flue gas waste heat recovery apparatus it is characterised in that described flue gas unit mainly by one fire
Burner and combustor composition, described burner is connected with described combustor, the exhanst gas outlet of described combustor and described generation
The gas approach of device unit connects；In described generator unit, condenser unit and/or absorber unit, flue gas and shower water
Or the heat exchange liquid form of solution is one or more of vertical adverse current, level adverse current, distributary, following current and mixed flow.
4. as claimed in claim 2 a kind of flue gas waste heat recovery apparatus it is characterised in that when described condenser and/or described
When absorber is one-level, described return pipe and feed pipe adopt one of following heat exchange connected mode：
1) described return pipe divides two-way to be connected in parallel described water-water heat exchanger and the hot water inlet of solution-water- to-water heat exchanger, described confession
Water pipe divides two-way to be connected in parallel described water-water heat exchanger and the hot water outlet of solution-water- to-water heat exchanger；
2) described return pipe is connected with the hot water inlet of described water-water heat exchanger, the hot water outlet of described water-water heat exchanger and institute
The hot water inlet stating solution-water- to-water heat exchanger connects, and the hot water outlet of described solution-water- to-water heat exchanger is connected with described feed pipe；
3) described return pipe is connected with the hot water inlet of described solution-water- to-water heat exchanger, the hot water outlet of described solution-water- to-water heat exchanger
It is connected with the hot water inlet of described water-water heat exchanger, the hot water outlet of described water-water heat exchanger is connected with described feed pipe；
When described condenser and/or described absorber be two-stage with higher level when, described return pipe and feed pipe adopt following heat exchange
One of connected mode：
1) described return pipe divides the hot water inlet of three road more parallels water-water heat exchanger at different levels and solution-water- to-water heat exchanger at different levels, institute
State the hot water outlet that feed pipe divides three road more parallels water-water heat exchanger at different levels and solution-water- to-water heat exchanger at different levels；
2) described return pipe is connected with the hot water inlet of first order water-water heat exchanger, remaining water-water heat exchanger at different levels and at different levels molten
The hot water outlet of liquid-water- to-water heat exchanger and hot water inlet are linked in sequence successively, the heat of described feed pipe and final stage solution-water- to-water heat exchanger
Water out connects；
3) described return pipe is connected with the hot water inlet of final stage solution-water- to-water heat exchanger, remaining solution-water- to-water heat exchanger at different levels and at different levels
The hot water outlet of water-water heat exchanger and hot water inlet are linked in sequence successively, the heat of described feed pipe and first order water-water heat exchanger
Water out connects.
5. a kind of flue gas waste heat recovery apparatus are it is characterised in that this device includes an a flue gas unit, generator unit, cold
Condenser unit, an absorber unit, a return pipe and a feed pipe；
Wherein, the exhanst gas outlet of described flue gas unit is connected with the gas approach of described generator unit, described generator unit
Exhanst gas outlet be connected with the gas approach of described condenser unit, the exhanst gas outlet of described condenser unit and described absorber
The gas approach of unit connects, to form flue gas heat exchange path；
The concentrated solution outlet of described generator unit is connected with the concentrated solution import of a solution-solution heat exchanger, described solution-molten
The concentrated solution outlet of liquid heat exchanger is connected with the solution spraying mechanism import in described absorber unit by a solution spraying pump；
The taphole of described absorber unit is passed through a solution circulation pump and is connected with the dilute solution inlet of described solution-solution heat exchanger
Connect, the weak solution outlet of described solution-solution heat exchanger is connected with the weak solution spraying mechanism import in described generator unit,
To form solution recuperated cycle loop；
Described return pipe respectively with the gas-water heat exchanger being arranged within described condenser unit and be arranged on described absorber
The backwater import of the solution-water- to-water heat exchanger within unit connects, described feed pipe respectively with described gas-water heat exchanger and described
The service water outlet of solution-water- to-water heat exchanger connects.
6. as claimed in claim 5 a kind of flue gas waste heat recovery apparatus it is characterised in that described generator unit by one-level with
Upper generator composition, and when described generator is more than two-stage, the exhanst gas outlet of previous stage generator and rear stage generator
Gas approach be sequentially connected in series；Meanwhile, the concentrated solution outlet of first order generator and the concentrated solution of described solution-solution heat exchanger
Import connects, and the weak solution outlet of described solution-solution heat exchanger and the weak solution spraying mechanism import in final stage generator connect
Connect, and the taphole of described final stage generator passes through the solution spraying mechanism import of generator interstage pumps and penult generator
Connect, analogize forward successively；
Described condenser unit is made up of the above condenser of one-level, and when described condenser is more than two-stage, previous stage condenses
The exhanst gas outlet of device is sequentially connected in series with the gas approach of rear stage condenser；
Described absorber unit is made up of the above absorber of one-level, and when described absorber is more than two-stage, previous stage absorbs
The exhanst gas outlet of device is sequentially connected in series with the gas approach of rear stage absorber；Meanwhile, the concentrated solution of described solution-solution heat exchanger
Export by the solution spraying mechanism import in described solution spraying parallel connection of pumps described absorber at different levels, described absorbers at different levels
Taphole is connected with the dilute solution inlet of described solution-solution heat exchanger by described solution circulation pump after being merged into a road.
7. as claimed in claim 5 a kind of flue gas waste heat recovery apparatus it is characterised in that described flue gas unit mainly by one fire
Burner and combustor composition, described burner is connected with described combustor, the exhanst gas outlet of described combustor and described generation
The gas approach of device unit connects；In described generator unit and/or absorber unit, the heat exchange of flue gas and shower water or solution
Liquid form is one or more of vertical adverse current, level adverse current, distributary, following current and mixed flow.
8. as claimed in claim 6 a kind of flue gas waste heat recovery apparatus it is characterised in that when described condenser and/or described
When absorber is one-level, described return pipe and feed pipe adopt one of following heat exchange connected mode：
1) described return pipe divides two-way to be connected in parallel described water-water heat exchanger and the hot water inlet of solution-water- to-water heat exchanger, described confession
Water pipe divides two-way to be connected in parallel described water-water heat exchanger and the hot water outlet of solution-water- to-water heat exchanger；
2) described return pipe is connected with the hot water inlet of described water-water heat exchanger, the hot water outlet of described water-water heat exchanger and institute
The hot water inlet stating solution-water- to-water heat exchanger connects, and the hot water outlet of described solution-water- to-water heat exchanger is connected with described feed pipe；
3) described return pipe is connected with the hot water inlet of described solution-water- to-water heat exchanger, the hot water outlet of described solution-water- to-water heat exchanger
It is connected with the hot water inlet of described water-water heat exchanger, the hot water outlet of described water-water heat exchanger is connected with described feed pipe；
When described condenser and/or described absorber be two-stage with higher level when, described return pipe and feed pipe adopt following heat exchange
One of connected mode：
1) described return pipe divides the hot water inlet of three road more parallels water-water heat exchanger at different levels and solution-water- to-water heat exchanger at different levels, institute
State the hot water outlet that feed pipe divides three road more parallels water-water heat exchanger at different levels and solution-water- to-water heat exchanger at different levels；
2) described return pipe is connected with the hot water inlet of first order water-water heat exchanger, remaining water-water heat exchanger at different levels and at different levels molten
The hot water outlet of liquid-water- to-water heat exchanger and hot water inlet are linked in sequence successively, the heat of described feed pipe and final stage solution-water- to-water heat exchanger
Water out connects；
3) described return pipe is connected with the hot water inlet of final stage solution-water- to-water heat exchanger, remaining solution-water- to-water heat exchanger at different levels and at different levels
The hot water outlet of water-water heat exchanger and hot water inlet are linked in sequence successively, the heat of described feed pipe and first order water-water heat exchanger
Water out connects.
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| CN201410409938.9A CN104180523B (en) | 2014-08-19 | 2014-08-19 | A kind of flue gas waste heat recovery apparatus |
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| CN201410409938.9A CN104180523B (en) | 2014-08-19 | 2014-08-19 | A kind of flue gas waste heat recovery apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104764193B (en) * | 2015-04-20 | 2017-09-29 | 张建平 | A kind of high effective flue gas washes heat reclamation device |
| CN105258518A (en) * | 2015-11-11 | 2016-01-20 | 中国中轻国际工程有限公司 | Heat recovery process and system of flue gas |
| CN106440465A (en) * | 2016-08-31 | 2017-02-22 | 浙江浙能节能科技有限公司 | Energy-saving type thermal power plant flue gas moisture recovering system |
| CN107560163A (en) * | 2017-08-31 | 2018-01-09 | 芜湖鸣人热能设备有限公司 | Energy-saving hot water furnace system |
| CN108980815A (en) * | 2018-08-20 | 2018-12-11 | 中国华电科工集团有限公司 | A kind of flue gas heat recovery system and method that combustion gas generates |
| CN110207247B (en) * | 2018-09-12 | 2024-07-12 | 华帝股份有限公司 | Waterway system of household wall-mounted furnace, household wall-mounted furnace and control method of household wall-mounted furnace |
| RU2736965C1 (en) * | 2020-03-11 | 2020-11-23 | Общество с ограниченной ответственностью "Радиус" (ООО "Радиус") | Method for deep utilization of low-potential heat of combustion products using an absorption thermal transformer with two-step absorption |
| CN112856468A (en) * | 2021-04-22 | 2021-05-28 | 亿利洁能科技（乐陵）有限公司 | Boiler flue gas waste heat recovery equipment of recycling |
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| CN201387178Y (en) * | 2009-03-18 | 2010-01-20 | 安徽工业大学 | Liquid desiccant dehumidification device driven by low-temperature flue gas |
| KR20130123167A (en) * | 2012-05-02 | 2013-11-12 | 대우조선해양 주식회사 | The dehumidification system using heater and waste heat, and the management method |
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| CN101457955A (en) * | 2008-11-24 | 2009-06-17 | 袁一军 | Heat energy and water recovery method |
| CN201387178Y (en) * | 2009-03-18 | 2010-01-20 | 安徽工业大学 | Liquid desiccant dehumidification device driven by low-temperature flue gas |
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