CN203671637U - Low-low temperature flue gas waste heat recovery system - Google Patents
Low-low temperature flue gas waste heat recovery system Download PDFInfo
- Publication number
- CN203671637U CN203671637U CN201320875173.9U CN201320875173U CN203671637U CN 203671637 U CN203671637 U CN 203671637U CN 201320875173 U CN201320875173 U CN 201320875173U CN 203671637 U CN203671637 U CN 203671637U
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- China
- Prior art keywords
- heat exchanger
- low
- flue gas
- waste heat
- plate type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000003546 flue gas Substances 0.000 title claims abstract description 20
- 239000002918 waste heat Substances 0.000 title claims abstract description 18
- 238000011084 recovery Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000007789 gas Substances 0.000 claims abstract description 28
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 13
- 239000000428 dust Substances 0.000 abstract description 6
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 239000003245 coal Substances 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract 1
- 239000003292 glue Substances 0.000 abstract 1
- 231100000989 no adverse effect Toxicity 0.000 abstract 1
- 239000012716 precipitator Substances 0.000 abstract 1
- 239000003517 fume Substances 0.000 description 8
- 238000005057 refrigeration Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 235000019504 cigarettes Nutrition 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
-
- 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]
- Y02B30/62—Absorption based systems
-
- 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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- Treating Waste Gases (AREA)
Abstract
A low-low temperature flue gas waste heat recovery system comprises an air heater, an air pre-heater, an electric precipitator, a glue gas cooler and a plate heat exchanger. The air heater heats the air entering the air pre-heater through the hot water in the plate heat exchanger, steam extraction is reduced, coal consumption is reduced, a lithium bromide refrigerating unit and a water tank are additionally arranged on the plate heat exchanger II to form the refrigerating system and the heating system, the refrigerating system and the heating system are used under different environments, can be used at the same time and can also be used independently, using is more flexible, the low-low temperature flue gas waste heat recovery system is used in a more pertinent mode, for example, a heat supply network circulating system can be selected and used in winter for heating, and the refrigerating system can be selected and used in summer for refrigerating. According to the technical scheme, the low-low temperature dust removing benefits are achieved, the new waste heat utilizing form is provided, the scheme system is stable, has no adverse effect on an original system and is not limited by seasons and areas, deep energy conservation is achieved, and emission is reduced.
Description
Technical field
The utility model relates to a kind of low low-temperature flue gas waste heat recovery system, relates in particular to the low low-temperature flue gas waste heat recovery system of a kind of one that significantly improves dust removing effects and low low-temperature flue gas waste heat is made full use of.
Background technology
The exhaust gas temperature of domestic many station boilers is higher at present, temperature is generally at 130 ℃ ~ 150 ℃, also some exhaust gas temperature is up to 180 ~ 200 ℃, if the fume afterheat of getting rid of not made full use of, waste a large amount of heat energy, empty cost source, because the smoke discharging residual heat of station boiler is higher, therefore be necessary effectively to utilize fume afterheat, realize the degree of depth energy-conservation, improve the economy of thermal power plant's raising unit.
The existing technological means that surplus heat of power plant is utilized is generally: the mode that installs gas cooler at boiler back end ductwork additional utilizes tail flue gas waste-heat steam turbine condensate water to improve the heat-economy of unit, with regard to installing the technical scheme of gas cooler additional, there are two kinds of modes: a kind of be arranged in after electric cleaner for gas cooler; Another kind of for before gas cooler is arranged in electric cleaner; The first put scheme to efficiency of dust collection without any raising, first scheme dust collector efficiency improvement value is very little, and electric cleaner input gas temperature is higher than acid dew point, with regard to fume afterheat purposes, the scheme of fume afterheat heat-setting water, how much all can exert an influence to the vacuum of steam turbine, be unfavorable for that unit moves for a long time, and insufficient to utilizing of fume afterheat, along with the enforcement of new edition thermal power plant pollutant emission standard, utilize form and original electric precipitation effect to have higher requirement to fume afterheat.
Summary of the invention
For solving above-mentioned technological deficiency, the utility model provides a kind of low low-temperature flue gas waste heat recovery system, and it especially can be realized: 1, and reduce electric cleaner inlet flue gas temperature, and then reduce dust specific resistance, performance low temperature dustproof function, reduces deduster outlet dust emission;
2, cigarette temperature drop low (cigarette temperature can be cooled to low low temperature range: 85 ℃ ~ 110 ℃), flue gas volume reduces, and reduces fan energy consumption, improves reliability;
3, enter desulphurization system cigarette temperature drop low, reduce wet desulphurization water consumption;
4, Mist heat recovering to greatest extent, different operating mode differences are utilized form, improve economy.
For achieving the above object, the utility model is by the following technical solutions:
A kind of low low-temperature flue gas waste heat recovery system, comprise steam air heater, air preheater, electric cleaner, gas cooler, plate type heat exchanger, described gas cooler is arranged in the flue between air preheater and electric cleaner, on the water inlet pipe of gas cooler, be provided with water circulating pump, water circulating pump delivery port is provided with vacuum tank and plate type heat exchanger I, described steam air heater is arranged on the air inlet of air preheater, and steam air heater is connected with outlet pipe and the water inlet pipe of plate type heat exchanger I by plate type heat exchanger II water inlet pipe and outlet pipe.
Further, the low low-temperature flue gas waste heat recovery system of described one, also comprises lithium bromide refrigerating unit, and described lithium bromide refrigerating unit is arranged on the outlet pipe of plate type heat exchanger II.
Further, described lithium bromide refrigerating unit utilizes the warm water in the outlet pipe of plate type heat exchanger II to form refrigeration system.
Further, between the water inlet pipe of described plate type heat exchanger II and outlet pipe, also can add water tank, make the warm water between water inlet pipe and outlet pipe form a water circulation, form heating system.
Further, the heat exchanger tube that described gas cooler adopts is H type finned tube, the special steel material ND steel of heat exchanger tube material selection sulfuric acid corrosion resistant.
As preferably, gas cooler adopts modularized design, easy access and replacing, and each module can be stopped transport separately in the time there is leakage problem, does not affect the operation of other modules, the utilization rate of raising equipment.
Further, the inside and outside medium of heat exchanger tube in gas cooler carries out countercurrent flow form, and the outer medium of heat exchanger tube is flue gas, in pipe, medium is closed cycle water, the safe operation below acid dew point of assurance equipment, maximum possible absorbs fume afterheat, reaches maximum energy-saving effect.
The beneficial effects of the utility model are:
1, by adding plate type heat exchanger, the hot gas in gas cooler is made full use of, hot gas is converted into hot water, and hot water is further utilized, make full use of waste heat, reduce energy consumption;
2, make steam air heater utilize the hot water in plate type heat exchanger to heat the air entering in air preheater, reduce and draw gas thus, reduce coal consumption;
3, form refrigeration system by adding lithium bromide refrigerating unit on the outlet pipe at plate type heat exchanger II, the hot water in plate type heat exchanger is further utilized, meet refrigeration demand;
4, by also adding water tank between the water inlet pipe at plate type heat exchanger II and outlet pipe, form heating system, meet client's heating demand;
5, above-mentioned refrigeration system, heating system use under different environment, can use simultaneously, also can separately use, it uses more flexibly, has more specific aim, such as very cold in the winter time, China northeast, the Northwest that heating period is grown, can select steam air heater heating system; In summer climate sweltering heat, the south China area that the phase of need to freezing is grown, can select refrigeration system, this technical scheme had both reached low temperature dedusting benefit, and the new model of UTILIZATION OF VESIDUAL HEAT IN is provided again, this scheme system stability, to original system without any adverse effect, be not subject to the restriction of season and region, realize the degree of depth energy-conservation, reduce discharge.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Fig. 1, a kind of low low-temperature flue gas waste heat recovery system structural representation.
In figure, 1 gas cooler, 2 electric cleaners, 3 vacuum tanks, 4 plate type heat exchanger I, 5 water circulating pumps, 6 plate type heat exchanger II, 7 water tanks, 8 lithium bromide refrigerating units, 9 steam air heaters, 10 air preheaters, 11 desulfurizers.
The specific embodiment
By reference to the accompanying drawings 1, a kind of low low-temperature flue gas waste heat recovery system, comprise steam air heater 9, air preheater 10, electric cleaner 2, gas cooler 1, plate type heat exchanger, described gas cooler 1 is arranged in the flue between air preheater 10 and electric cleaner 2, on the water inlet pipe of gas cooler 1, be provided with water circulating pump 5, water circulating pump 5 delivery ports are provided with vacuum tank 3 and plate type heat exchanger I, gas cooler 1 adopts modularized design, easy access and replacing, the heat exchanger tube that gas cooler 1 adopts is H type finned tube, the inside and outside medium of heat exchanger tube carries out countercurrent flow form, the outer medium of heat exchanger tube is flue gas, in pipe, medium is closed cycle water, the special steel material ND steel of heat exchanger tube material selection sulfuric acid corrosion resistant, the safe operation below acid dew point of assurance equipment, maximum possible absorbs fume afterheat, reach maximum energy-saving effect.
Described steam air heater 9 is arranged on the air inlet of air preheater 10, steam air heater 9 is connected with outlet pipe and the water inlet pipe of plate type heat exchanger I by plate type heat exchanger II water inlet pipe and outlet pipe, the described lithium bromide refrigerating unit 8 that also comprises, lithium bromide refrigerating unit 8 is arranged on the outlet pipe of plate type heat exchanger II, and lithium bromide refrigerating unit 8 utilizes the warm water in the outlet pipe of plate type heat exchanger II to form refrigeration system; Between the water inlet pipe of described plate type heat exchanger II and outlet pipe, also can add 7 water tanks, make the warm water between water inlet pipe and outlet pipe form a water circulation, form heating system, above-mentioned refrigeration system, heating system use under different environment, can use simultaneously, also can separately use, it uses more flexibly, has more specific aim, such as very cold in the winter time, China northeast, the Northwest that heating period is grown, can select steam air heater 9 heating systems; In summer climate sweltering heat, the south China area that the phase of need to freezing is grown, can select refrigeration system, and this technical scheme had both reached low temperature dedusting benefit, make to enter cigarette temperature drop in desulfurizer 11 low, reduce wet desulphurization water consumption, provide again the new model of UTILIZATION OF VESIDUAL HEAT IN, this scheme system stability, to original system without any adverse effect, be not subject to the restriction of season and region, realize the degree of depth energy-conservation, reduce discharge.
Obviously, above-mentioned embodiment is only preferred embodiments of the present utility model, and any simple modifications on this basis all belongs to better protection domain of the present utility model.
Claims (3)
1. one kind low low-temperature flue gas waste heat recovery system, comprise steam air heater, air preheater, electric cleaner, gas cooler, plate type heat exchanger, it is characterized in that described gas cooler is arranged in the flue between air preheater and electric cleaner, on the water inlet pipe of gas cooler, be provided with water circulating pump, water circulating pump delivery port is provided with vacuum tank and plate type heat exchanger I, described steam air heater is arranged on the air inlet of air preheater, and steam air heater is connected with plate type heat exchanger I outlet pipe and water inlet pipe by plate type heat exchanger II water inlet pipe and outlet pipe.
2. the low low-temperature flue gas waste heat recovery system of one according to claim 1, characterized by further comprising lithium bromide refrigerating unit, and described lithium bromide refrigerating unit is arranged on the outlet pipe of plate type heat exchanger II.
3. the low low-temperature flue gas waste heat recovery system of one according to claim 1, is characterized in that the heat exchanger tube that gas cooler adopts is H type finned tube, the special steel material ND steel of heat exchanger tube material selection sulfuric acid corrosion resistant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320875173.9U CN203671637U (en) | 2013-12-30 | 2013-12-30 | Low-low temperature flue gas waste heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320875173.9U CN203671637U (en) | 2013-12-30 | 2013-12-30 | Low-low temperature flue gas waste heat recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203671637U true CN203671637U (en) | 2014-06-25 |
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ID=50967926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320875173.9U Expired - Lifetime CN203671637U (en) | 2013-12-30 | 2013-12-30 | Low-low temperature flue gas waste heat recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203671637U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896503A (en) * | 2015-06-19 | 2015-09-09 | 东方电气集团东方锅炉股份有限公司 | Boiler smoke waste heat use system |
| CN105905873A (en) * | 2016-04-22 | 2016-08-31 | 中国瑞林工程技术有限公司 | Technology for producing water by using low temperature waste heat and for recycling low temperature waste heat |
| CN106907762A (en) * | 2017-04-05 | 2017-06-30 | 柳赢乐 | Energy-saving indoor fuel gas close direct combustion heating method and device |
-
2013
- 2013-12-30 CN CN201320875173.9U patent/CN203671637U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896503A (en) * | 2015-06-19 | 2015-09-09 | 东方电气集团东方锅炉股份有限公司 | Boiler smoke waste heat use system |
| CN105905873A (en) * | 2016-04-22 | 2016-08-31 | 中国瑞林工程技术有限公司 | Technology for producing water by using low temperature waste heat and for recycling low temperature waste heat |
| CN106907762A (en) * | 2017-04-05 | 2017-06-30 | 柳赢乐 | Energy-saving indoor fuel gas close direct combustion heating method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 301 room, Airport Road, Licheng District, Shandong, Ji'nan, 7617, China Patentee after: JINAN SHANYUAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Address before: 301 room, Airport Road, Licheng District, Shandong, Ji'nan, 7617, China Patentee before: JINAN SHANYUAN ELECTRIC POWER EQUIPMENT CO.,LTD. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Low-low temperature flue gas waste heat recovery system Effective date of registration: 20190903 Granted publication date: 20140625 Pledgee: Qilu bank Limited by Share Ltd. branch of the southern suburbs of Ji'nan Pledgor: JINAN SHANYUAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Registration number: Y2019370000028 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20211223 Granted publication date: 20140625 Pledgee: Qilu bank Limited by Share Ltd. branch of the southern suburbs of Ji'nan Pledgor: JINAN SHANYUAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Registration number: Y2019370000028 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |