CN209371290U - A kind of flue gas deep treatment and waste-heat recovery device based on heat pipe heat exchanging technology - Google Patents
A kind of flue gas deep treatment and waste-heat recovery device based on heat pipe heat exchanging technology Download PDFInfo
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- CN209371290U CN209371290U CN201822068985.8U CN201822068985U CN209371290U CN 209371290 U CN209371290 U CN 209371290U CN 201822068985 U CN201822068985 U CN 201822068985U CN 209371290 U CN209371290 U CN 209371290U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model relates to a kind of flue gas deep treatment and waste-heat recovery device based on heat pipe heat exchanging technology, including sequentially connected: boiler, economizer, denitrator, rotary regenerative air heater, deduster, boiler induced-draft fan, former flue, absorption tower, net flue, chimney；Rotary regenerative air heater is also connected with primary air fan, is arranged that flue gas cool-down heat exchanger, setting disappears white heat exchanger on net flue on former flue, and flue gas cool-down heat exchanger and the white heat exchanger that disappears are also connected with preheated air connecting tube；Flue gas cool-down heat exchanger and the white heat exchanger that disappears are heat exchange of heat pipes.The utility model utilizes two groups of heat-pipe heat exchangers, and the heat recovery of neat stress, former flue gas is improved the temperature of boiler First air as boiler First air to air respectively, is achieved the purpose that energy-saving.It simultaneously by air cooled neat stress temperature, reduces effectively solution chimney of electric plant and emits white cigarette phenomenon, avoid lower gypsum rain phenomenon around power plant.
Description
Technical field
The utility model relates to a kind of flue gas deep treatment and waste-heat recovery device based on heat pipe heat exchanging technology is a kind of
Environment protecting power economizer is a kind of device of improvement coal-fired flue-gas discharge, is a kind of device of the energy-saving and emission-reduction of coal-burning boiler.
Background technique
Existing power plant is provided with desulfation dust-extraction device, and 90% or more using wet desulphurization, and flue gas is de- in wet process
Neat stress temperature 45 C ~ 55 DEG C being discharged after sulphur from absorption tower, the typically saturated wet flue gas of flue gas at this time, containing big in flue gas
Water vapour is measured, contains more dissolubility salt, SO in water vapour3, gel dust, micronic dust etc. (be all to be formed haze it is main at
Point).If flue gas is expelled directly out by chimney, into the lower surrounding air of temperature, due to the saturated humidity ratio of surrounding air
Lower, during flue-gas temperature reduces, the water vapour in flue gas can condense to form wet plume.It causes that atmosphere is not only to regard
Feel and also be substantially to pollute.Nearly measure 2 years, taken is that flue gas is removed by wet electrical dust precipitator containing in humid gas
After the harmful substances such as a part of dirt, acid mist, water droplet, aerosol, stink, it is drained into atmosphere by chimney.It more adopts at present
It is the mode to heat up afterwards that first cools down to former flue gas cool-down, neat stress with method.The neat stress being specifically discharged from absorption tower
Circulating water cooling is first used within the condenser.By heat medium water by the heat transfer of former flue gas to the net cigarette after condenser cools down
After gas increases smoke temperature, through smoke stack emission to atmosphere.Since former flue gas and net fume flow are big, corrosivity is strong, thermal capacity is big, make
It is bulky at the conventional shell-and-tube heat exchanger of selection, involve great expense.In addition selected process will consume a large amount of recirculated waters, right
Public work proposes very high requirement, if public work is unable to satisfy, then needs the circulating water cooling device of design complexity.How to drop
The temperature of low flue gas, it is also necessary to further to solve.
Summary of the invention
In order to overcome the problems of the prior art, the flue gas depth based on heat pipe heat exchanging technology that the utility model proposes a kind of
Improvement and waste-heat recovery device.The device adopts hot pipe technique, in the way of air heat exchange cooling, reduces discharge flue gas
Temperature, then the air that this part heat exchange is heated is introduced into First air, combustion process is added using heat therein, mentions
High burning efficiency.
Purpose of the utility model is realized as follows: a kind of flue gas deep treatment and waste heat based on heat pipe heat exchanging technology
Recyclable device, including sequentially connected: boiler, economizer, denitrator, rotary regenerative air heater, deduster, boiler induced-draft fan, original
Flue, absorption tower, net flue, chimney；The rotary regenerative air heater is also connected with primary air fan, and cigarette is arranged on the former flue
The white heat exchanger that disappears is set in gas cooling heat exchanger, net flue, and the flue gas cool-down heat exchanger and the white heat exchanger that disappears are also connected with
Preheated air connecting tube, the preheated air connecting tube are sequentially connected the white blower that disappears, the white heat exchanger that disappears, flue gas cool-down heat exchanger
With the primary air fan；The flue gas cool-down heat exchanger and the white heat exchanger that disappears is heat exchange of heat pipe.
Further, the heat exchange of heat pipe includes upper and lower two parts, and top is condensation chamber, and lower part is evaporation cavity, institute
It is heat conduction baffle between the condensation chamber and evaporation cavity stated, more heat pipes of vertical dense arrangement on the heat conduction baffle；It is described
Condensation chamber connect with preheated air connecting tube；The evaporation cavity is connect with former flue or net flue.
Further, equipped with condensed water collecting box, the condensed water collecting box is sequentially connected the white heat exchanger that disappears
Condensate pump is connected with pulping equipment.
The beneficial effect that the utility model generates is: the utility model utilizes two groups of heat-pipe heat exchangers, respectively by net cigarette
Gas, former flue gas heat recovery improve the temperature of boiler First air as boiler First air to air, reach energy-saving
Purpose.Simultaneously by air cooled neat stress temperature, reduces effectively solution chimney of electric plant and emit white cigarette phenomenon, avoid power plant's week
Enclose lower gypsum rain phenomenon.The flue gas condensing water of precipitation can recycle, and reduce consumption of the desulfurizer to process water, former cigarette
The reduction of temperature degree further reduced consumption of the absorption tower to process water.Compared to other technologies, the utility model operation is steady
It is fixed, while having reached the flue gas deep treatment for eliminating white cigarette and energy-saving double action.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of one described device of the embodiments of the present invention；
Fig. 2 is the structural schematic diagram of heat exchange of heat pipe described in the embodiments of the present invention two.
Specific embodiment
Embodiment one:
The present embodiment is a kind of flue gas deep treatment and waste-heat recovery device based on heat pipe heat exchanging technology, as shown in Figure 1.
The present embodiment includes sequentially connected: boiler 1, economizer 2, denitrator 3, rotary regenerative air heater 4, deduster 5, boiler induced-draft fan
6, former flue 7, absorption tower 8, net flue 9, chimney 10；The rotary regenerative air heater is also connected with primary air fan 11, the original
It is arranged that flue gas cool-down heat exchanger 12, setting disappears white heat exchanger 13 on net flue on flue, the flue gas cool-down heat exchanger and disappears
White heat exchanger is also connected with preheated air pipe 14, and the preheated air pipe is sequentially connected that the white blower 15 that disappears, disappear white heat exchanger, cigarette
Gas cooling heat exchanger and primary air fan；The flue gas cool-down heat exchanger and the white heat exchanger that disappears is heat exchange of heat pipe.It is double in Fig. 1
Solid line indicates that the flow path of flue gas, heavy line indicate the flow path of air.
The present embodiment, which uses, not only reduces neat stress, former flue-gas temperature but also the technology path of Mist heat recovering, it is intended to one
The new process route of kind realizes the purpose of energy-saving and emission-reduction.Heat exchanger used in the technology path uses efficient heat pipe heat exchanging
High efficient heat exchanging may be implemented in device, reduces investment outlay and operating cost.
Heat absorption in former flue gas and neat stress is being reduced original by the flue gas cool-down heat exchanger and the white heat exchanger that disappears
The air of preheating, is added in First air by preheated air while the temperature of cigarette and net cigarette later, improves the temperature of First air,
Achieve the purpose that energy-saving.
Preheated air is driven by the white blower that disappears, and air first passes around the condensation segment for the white heat heat exchange of heat pipe that disappears, and absorbs neat stress
Heat after air themperature increase, and make neat stress temperature reduction, be precipitated flue gas condensing water；The tentatively raised air of temperature is again
Flue gas cool-down heat exchange of heat pipe is flowed through, air further heats up, while former flue-gas temperature being reduced.Neat stress, former cigarette are recycled
The air of gas heat is transported to boiler primary air fan entrance, and boiler auxiliary combustion wind is used as after primary air fan is pressurized.
The heat in neat stress is absorbed using the lower air of temperature for the white blower driving that disappears, and drops neat stress temperature
It is low, achieve the purpose that flue gas deep treatment, the air after heating further recycles the heat in former flue gas by former flue gas reheat
Amount, then these air by preheating are sent into primary air fan, it is enabled to measure gradient utilization.
It is reduced by air cooled neat stress temperature, has further catharsis to neat stress, can make in neat stress
Part flue dust, gypsum and the soluble salt of carrying are precipitated with condensed water, effectively solve chimney of electric plant and emit white cigarette phenomenon, avoid power plant
The gypsum rain of surrounding, thus the pollutant concentration decline for being emitted into neat stress in atmosphere.
The flue gas condensing water being precipitated after net cigarette is cooling can recycle.Condensed water is made by pulverized limestone pulping facility
The products such as gypsum are sold, and extra water body can be used for sulfur removal technology, reduce the water consumption of sulfur removal technology.
And the reduction of former flue-gas temperature, it is meant that the reduction of absorption tower load reduces consumption of the absorption tower to process water.
The present embodiment selects air and former flue gas and the heat exchanger of neat stress heat exchange using not only economical but also high efficient and reliable
Heat exchange of heat pipe.The more conventional shell-and-tube heat exchange equipment of heat exchange of heat pipe is safer, reliable, can long-term continuous operation.It is even more important
Be that heat exchange of heat pipe heat exchange efficiency is high, equipment size is smaller, and equipment investment is less, and operating cost is low.
Embodiment two:
The present embodiment is the improvement of embodiment one, is refinement of the embodiment one about heat exchange of heat pipe.Described in the present embodiment
Heat exchange of heat pipe include upper and lower two parts, top is condensation chamber 16, and lower part is evaporation cavity 17, the condensation chamber and evaporation cavity
Between be heat conduction baffle 18, vertical more heat pipes 19 of dense arrangement, the condensation chamber and preheating on the heat conduction baffle
Air connecting tube connection；The evaporation cavity is connect with former flue or net flue, as shown in Figure 2.
The present embodiment has used hot pipe technique.Heat pipe be known as heat transfer superconductor can rapidly and efficiently by heat from evaporation ends
It is transmitted to condensation end.
Two cavitys up and down are arranged in heat exchange of heat pipe described in the present embodiment, intermediate to be separated with heat conduction baffle, heat pipe installation
On heat conduction baffle.The inlet and outlet 1601,1602 of the both ends setting air of condensation chamber, the both ends of evaporation cavity are equipped with the disengaging of flue gas
The evaporation ends of 1701,1702. heat pipes of mouth are located in evaporation cavity, and condensation end is arranged in condensation chamber.Heat pipe is on heat conduction baffle
Installation site is equipped with heat-barrier material 1801.These heat-barrier materials, which are equivalent to, separates the evaporation ends of heat pipe and condensation end.
The higher neat stress of temperature and former flue gas flow in evaporation cavity, and the lower air of temperature flows in condensation chamber,
In this way the heat of the higher neat stress of temperature and former flue gas can by hot pipe conducting into temperature lower air preheated air.
The effect of heat conduction baffle is to separate neat stress and former flue gas with air, and fixation heat pipe, while by the steaming of heat pipe
Originator and condensation end separate.Heat conduction baffle itself can also conduct heat, and only conduction efficiency is much lower with respect to heat pipe.
Compared with conventional heat transfer equipment, hot pipe technique has following important feature:
(1) the more conventional shell-and-tube heat exchange equipment of heat exchange of heat pipe is safer, reliable, can long-term continuous operation.Conventional shell
Formula heat exchange equipment is typically all septate heat transfer, and cold and hot fluid is flowed through in the two sides of wall respectively, if tube wall or wall have leakage,
Production suspension induced losses will then be caused.The heat exchange equipment being made of heat pipe is secondary septate heat transfer, i.e., hot fluid will pass through the evaporation of heat pipe
Section and condensation segment tube wall can just pass to cold fluid, and heat pipe is not generally possible in evaporator section and condensation segment while destroying, so greatly
Equipment reliability of operation is enhanced greatly.
(2) it conducts heat fast, high-efficient, heat-pipe heat exchanger is than conventional shell-and-tube heat exchanger the same heat exchange area the case where
Under, the high hundreds of times of heat transfer rate, efficiency is multiplied.So heat pipe heat exchanging equipment is than conventional shell-and-tube heat exchanger heat exchange area
Small, the small flexible arrangement of contour size of the unit(s) and cost of investment decline 30% ~ 50%.
(3) it is effectively prevented from the crossfire of cold and hot fluid, every heat pipe is all relatively independent closed cells, cold and hot fluid
It is flowed outside pipe, and by intermediate seal structure that cold and hot fluid is completely separated.
(4) dew point corrosion is effectively prevented, by adjusting heat pipe radical or the heat transfer area ratio of adjustment heat pipe cold hot side, is made
Heat pipe wall temperature is increased to dew-point temperature or more.
(5) dust stratification is effectively prevented, when design of heat exchanger can use variable cross-section form, guarantee that fluid passes through heat pipe heat exchanging
Uniform flow flows when device, achievees the purpose that from deashing.
(6) it without any rotatable parts, is consumed without additional power, does not need often to replace element, even if there is subelement
Damage, nor affects on normal production.
(7) damage of single heat pipe does not influence other heat pipes, while the influence to overall heat exchange effect also can be ignored not
Note.
Embodiment three:
The present embodiment is the improvement of embodiment two, is refinement of the embodiment two about the white exchanger heat that disappears.The present embodiment institute
The white heat exchanger that disappears stated is equipped with condensed water collecting box 20, and the condensed water collecting box is sequentially connected condensate pump 21 and slurrying is set
Standby 22 connection, as shown in Figure 1.Thick dashed line indicates the flow path of condensed water in Fig. 1.
A large amount of condensed waters can be precipitated in the white heat exchanger of disappearing in neat stress, these condensed waters water collection tank that can be condensed is received
Collection, and the water pump that is condensed is delivered to for agstone slurrying, extra water body enters in absorption tower as cooling water to be sprayed, section
The water consumption of desulfurization skill is saved.
Finally it should be noted that being merely intended for describing the technical solutions of the present application, but not for limiting the present application above, although referring to compared with
The utility model is described in detail in good arrangement, those skilled in the art should understand that, it can be to this reality
It is modified or replaced equivalently with novel technical solution (such as connection type, each connection relationship of whole device etc.),
Without departing from the spirit and scope of the technical scheme of the present invention.
Claims (3)
1. a kind of flue gas deep treatment and waste-heat recovery device based on heat pipe heat exchanging technology, including sequentially connected: boiler, province
Coal device, denitrator, rotary regenerative air heater, deduster, boiler induced-draft fan, former flue, absorption tower, net flue, chimney；Described returns
Rotatable air preheater is also connected with primary air fan, which is characterized in that flue gas cool-down heat exchanger is arranged on the former flue, on net flue
The white heat exchanger that disappears is set, and the flue gas cool-down heat exchanger and the white heat exchanger that disappears are also connected with preheated air connecting tube, described
Preheated air connecting tube is sequentially connected the white blower that disappears, the white heat exchanger that disappears, flue gas cool-down heat exchanger and the primary air fan；It is described
Flue gas cool-down heat exchanger and the white heat exchanger that disappears be heat exchange of heat pipe.
2. the apparatus according to claim 1, which is characterized in that the heat exchange of heat pipe includes upper and lower two parts, top
For condensation segment, lower part is evaporator section, is heat conduction baffle between the condensation segment and evaporator section, vertical on the heat conduction baffle
More heat pipes of dense arrangement；The condensation segment is connect with preheated air connecting tube；The evaporator section and former flue or net
Flue connection.
3. device according to claim 1, which is characterized in that the white heat exchanger that disappears is described equipped with condensed water collecting box
Condensed water collecting box be sequentially connected condensate pump and connected with pulping equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822068985.8U CN209371290U (en) | 2018-12-11 | 2018-12-11 | A kind of flue gas deep treatment and waste-heat recovery device based on heat pipe heat exchanging technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822068985.8U CN209371290U (en) | 2018-12-11 | 2018-12-11 | A kind of flue gas deep treatment and waste-heat recovery device based on heat pipe heat exchanging technology |
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| CN209371290U true CN209371290U (en) | 2019-09-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848729A (en) * | 2019-10-18 | 2020-02-28 | 华电电力科学研究院有限公司 | Rotary air preheater blockage prevention and control system and working method thereof |
| CN111895831A (en) * | 2020-08-10 | 2020-11-06 | 广东欧文莱陶瓷有限公司 | Heat exchange device |
| CN114719644A (en) * | 2022-02-17 | 2022-07-08 | 苏州创泰合金材料有限公司 | Waste heat recovery system of aluminum alloy casting workshop |
| CN117606252A (en) * | 2023-11-23 | 2024-02-27 | 河北天越激光再制造科技有限公司 | Device capable of replacing GGH heat exchanger to heat clean flue gas |
-
2018
- 2018-12-11 CN CN201822068985.8U patent/CN209371290U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848729A (en) * | 2019-10-18 | 2020-02-28 | 华电电力科学研究院有限公司 | Rotary air preheater blockage prevention and control system and working method thereof |
| CN111895831A (en) * | 2020-08-10 | 2020-11-06 | 广东欧文莱陶瓷有限公司 | Heat exchange device |
| CN114719644A (en) * | 2022-02-17 | 2022-07-08 | 苏州创泰合金材料有限公司 | Waste heat recovery system of aluminum alloy casting workshop |
| CN117606252A (en) * | 2023-11-23 | 2024-02-27 | 河北天越激光再制造科技有限公司 | Device capable of replacing GGH heat exchanger to heat clean flue gas |
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