CN103017569A - Flue gas heating device - Google Patents
Flue gas heating device Download PDFInfo
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- CN103017569A CN103017569A CN2013100009694A CN201310000969A CN103017569A CN 103017569 A CN103017569 A CN 103017569A CN 2013100009694 A CN2013100009694 A CN 2013100009694A CN 201310000969 A CN201310000969 A CN 201310000969A CN 103017569 A CN103017569 A CN 103017569A
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Abstract
The invention relates to a flue gas heating device which is characterized by comprising heat exchanger modules (1), water inlet collection boxes (5) of the heat exchanger modules, and water outlet collection boxes (6) of the heat exchanger modules, wherein the water inlet collection boxes (5) are installed at the water inlet ends of the heat exchanger modules (1), and the water outlet collection boxes (6) are installed at the water outlet ends of the heat exchanger modules (1). Each module of the heat exchangers on two sides of the flue is provided with individual water inlet and outlet collection boxes, the collection boxes are connected with the main water inlet pipe and the main water outlet pipe through the gate valves, and in the normal running process, the gate valves are normally opened, and the working medium water flows through all the heat exchanger modules; and once the heat exchange pipe of a single module leaks, the gate valves between the water inlet and outlet collection boxes and the main water inlet and outlet pipes of the module can be closed, as the module is isolated separately, and the running of other heat exchanger modules can not be affected.
Description
Technical field
The present invention relates to the environmental protection equipment field, especially a kind of Smoke-heating device.
Background technology
Since the reform and opening-up, along with the high speed development of national economy, the wasting of resources, highly energy-consuming, high pollution become the key factor of puzzlement and the economic development of restriction China gradually.For building a resource-conserving society, also for the whole mankind's common interests, China " 12 " planning outline proposes, and the power consumption of unit GDP reduces about 20% during " 12 ", and total emissions of major pollutants reduces 10%.Energy-saving and emission-reduction will be current so " 12 ", " 13 " during one of the conspicuous contradiction of social development.How to realize conservation-minded society, how energy-saving and emission-reduction, reduce that to pollute be the target that country pays much attention to and firmly will realize.
In the fossil-fired unit of China's active service, generally about 130 to 160 ℃, when large medium-size boiler normally moved, heat loss due to exhaust gas accounted for 4% ~ 8% of boiler oil input heat to the exhaust gas temperature of boiler, was of boiler heat loss maximum.How to utilize to greatest extent this part waste heat also to become the power plant and implement a step important in the energy-saving and emission-reduction policy, 15 ℃ to 20 ℃ of every reductions of exhaust gas temperature can improve boiler efficiency about 1% as calculated.
Advocate under the macroclimate of " energy-saving and emission-reduction " in the present whole society, some power plant progressively recognize the energy waste that causes owing to exhaust gas temperature is too high, begin to utilize the smoke gas afterheat heat exchanger Mist heat recovering, make the temperature of flue gas reduce again 30 to 50 ℃, and obtained first-stage success.Its advantage mainly contains two aspects:
1. smoke gas afterheat heat exchanger can absorb waste heat for heat-setting water from flue gas, improves the efficient of unit;
2. before smoke gas afterheat heat exchanger was arranged on desulfurizing tower, the temperature in the time of can reducing flue gas and enter desulfurizing tower had greatly reduced the cooling water consumption in the desulfurizing tower, reaches best desulfuration efficiency state.
By power plant's practice, adopt smoke gas afterheat heat exchanger to reduce exhaust gas temperature, can make gross coal consumption rate reduce by 2-3g/kWh.Therefore National Development and Reform Committee is in " the state key power-saving technology is promoted catalogue (the 3rd batch) " of bulletin on November 29th, 2010, special recommendation this power-saving technology.
The effect of smoke gas afterheat heat exchanger is significantly, but the environment of its work is more abominable.This is because the running temperature of smoke gas afterheat heat exchanger near acid dew point or below acid dew point, causes corrosion easily.
Therefore, need a kind of novel device badly and solve defects.
Summary of the invention
The object of the present invention is to provide a kind of Smoke-heating device, the running temperature that solves smoke gas afterheat heat exchanger causes the defective of corrosion easily near acid dew point or below acid dew point.
Technical scheme of the present invention is:
A kind of Smoke-heating device, comprise heat exchanger module 1, heat exchanger module water inlet header 5 and heat exchanger module water outlet header 6, described heat exchanger module water inlet header 5 is installed in the water inlet end of heat exchanger module 1, and heat exchanger module water outlet header 6 is installed in the water side of heat exchanger module 1.
Described heat exchanger module water inlet header 5 connects main water outlet pipe 3 by gate valve 4.
Described heat exchanger module water outlet header 6 connects the female pipe 2 of water inlet by gate valve 4.
Described main water outlet pipe 3 is provided with female case water inlet pipe that connects.
The female pipe 2 of described water inlet is provided with female case water out that connects.
The invention has the beneficial effects as follows:
1, working-medium water enters heat exchanger by the flue two ends, and the logical one-sided water inlet of section ratio of water effluent increases and is twice, and the flow velocity of water is in normal range (NR) in guaranteeing to manage when the working-medium water flow is larger.
2, split modular construction more is conducive to processing and fabricating and transportation, because the flue width of the boiler of the generating set of picture 600MW, 1000MW is larger, greatly about about 12m, if be designed to end water inlet then whole heat exchanger module windward side length just reaches 12m, be unfavorable for processing and fabricating and transportation.Be divided into two ends water inlets then every group of heat exchanger windward side length be convenient to processing and fabricating and transportation only for about 6m, also made things convenient for the replacing of heating surface.
3, the heat exchanger modules of flue both sides is provided with independent Inlet and outlet water header, and header is connected by gate valve respectively with between the Inlet and outlet water total pipeline, and when normally moving, gate valve is often opened, the heat exchanger module that working-medium water is flowed through whole.In case the heat exchanger tube of certain individual module leaks, can close the Inlet and outlet water header of this module and the gate valve between the Inlet and outlet water total pipeline, with its independent isolation, do not affect the operation of all the other heat exchanger modules.
4, heat exchanger header, heat exchanger tube connecting bend all are positioned at the flue outside, avoid flue gas directly to wash away, wear prevention.Simultaneously weld seam is also all in the flue outside, and is provided with space for maintenance, easy access.
Description of drawings
Fig. 1 is the structural representation of the windward side of Smoke-heating device of the present invention.
Fig. 2 is A direction schematic diagram among Fig. 1.
Among the figure: 1 be the heat exchanger module, 2 for the female pipe of water inlet, 3 for main water outlet pipe, 4 for gate valve, 5 for heat exchanger module water inlet header, 6 be heat exchanger module water outlet header.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing:
Such as Fig. 1, Fig. 2, a kind of Smoke-heating device, comprise heat exchanger module 1, heat exchanger module water inlet header 5 and heat exchanger module water outlet header 6, described heat exchanger module water inlet header 5 is installed in the water inlet end of heat exchanger module 1, and heat exchanger module water outlet header 6 is installed in the water side of heat exchanger module 1.
Heat exchanger module water inlet header 5 connects main water outlet pipe 3 by gate valve 4.Heat exchanger module water outlet header 6 connects the female pipe 2 of water inlet by gate valve 4.Main water outlet pipe 3 is provided with female case water inlet pipe that connects.The female pipe 2 of water inlet is provided with female case water out that connects.
Present embodiment is established the two-stage flue gas waste heat recovery apparatus altogether, and the one-level flue gas heat-exchange unit is arranged in the deduster entrance location, and the secondary smoke heat exchanger is arranged in desulfurizing tower import behind the deduster.The comparatively advanced split modularized design that the structural design of present embodiment flue gas heat-exchange unit adopts.
Embodiment recited above is described preferred embodiment of the present invention; be not that the spirit and scope of the present invention are limited; do not breaking away under the design concept prerequisite of the present invention; common engineers and technicians make technical scheme of the present invention in this area various modification and improvement; all should fall into protection scope of the present invention, the technology contents that the present invention asks for protection all is documented in claims.
Claims (5)
1. Smoke-heating device, it is characterized in that comprising heat exchanger module (1), heat exchanger module water inlet header (5) and heat exchanger module water outlet header (6), described heat exchanger module water inlet header (5) is installed in the water inlet end of heat exchanger module (1), and heat exchanger module water outlet header (6) is installed in the water side of heat exchanger module (1).
2. a kind of Smoke-heating device according to claim 1 is characterized in that described heat exchanger module water inlet header (5) connects main water outlet pipe (3) by gate valve (4).
3. a kind of Smoke-heating device according to claim 1 is characterized in that described heat exchanger module water outlet header (6) connects the female pipe of water inlet (2) by gate valve (4).
4. a kind of Smoke-heating device according to claim 1 is characterized in that described main water outlet pipe (3) is provided with female case water inlet pipe that connects.
5. a kind of Smoke-heating device according to claim 1 is characterized in that the female pipe of described water inlet (2) is provided with female case water out that connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100009694A CN103017569A (en) | 2012-10-11 | 2013-01-04 | Flue gas heating device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210385256.X | 2012-10-11 | ||
| CN201210385256 | 2012-10-11 | ||
| CN2013100009694A CN103017569A (en) | 2012-10-11 | 2013-01-04 | Flue gas heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103017569A true CN103017569A (en) | 2013-04-03 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100009694A Pending CN103017569A (en) | 2012-10-11 | 2013-01-04 | Flue gas heating device |
| CN 201320001381 Expired - Fee Related CN203053269U (en) | 2012-10-11 | 2013-01-04 | Flue gas heating device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320001381 Expired - Fee Related CN203053269U (en) | 2012-10-11 | 2013-01-04 | Flue gas heating device |
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| CN (2) | CN103017569A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107541884A (en) * | 2016-08-31 | 2018-01-05 | 江门市宪诚环保节能设备有限公司 | Forming machine waste gas residual heat reclaims energy saver |
| CN108362155A (en) * | 2018-02-08 | 2018-08-03 | 王萍 | A kind of industrial waste gas heat-energy secondary based on hot swapping utilizes device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017569A (en) * | 2012-10-11 | 2013-04-03 | 王浩 | Flue gas heating device |
| CN106500528A (en) * | 2016-12-30 | 2017-03-15 | 广东申菱环境系统股份有限公司 | A kind of finned heat exchanger of step heat discoloration |
| CN108036302B (en) * | 2018-01-10 | 2024-03-29 | 北京龙电宏泰环保科技有限公司 | Thermal state water injection method suitable for fluoroplastic flue gas heat exchanger |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2682368Y (en) * | 2004-02-16 | 2005-03-02 | 山东北辰集团辰光有限公司 | Longitudinal finned tube flue gas heat exchanger rig |
| CN203053269U (en) * | 2012-10-11 | 2013-07-10 | 王浩 | Flue gas heating device |
-
2013
- 2013-01-04 CN CN2013100009694A patent/CN103017569A/en active Pending
- 2013-01-04 CN CN 201320001381 patent/CN203053269U/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2682368Y (en) * | 2004-02-16 | 2005-03-02 | 山东北辰集团辰光有限公司 | Longitudinal finned tube flue gas heat exchanger rig |
| CN203053269U (en) * | 2012-10-11 | 2013-07-10 | 王浩 | Flue gas heating device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107541884A (en) * | 2016-08-31 | 2018-01-05 | 江门市宪诚环保节能设备有限公司 | Forming machine waste gas residual heat reclaims energy saver |
| CN108362155A (en) * | 2018-02-08 | 2018-08-03 | 王萍 | A kind of industrial waste gas heat-energy secondary based on hot swapping utilizes device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN203053269U (en) | 2013-07-10 |
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Application publication date: 20130403 |