CN102313292A - Air outlet structure of tubular air preheater - Google Patents
Air outlet structure of tubular air preheater Download PDFInfo
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- CN102313292A CN102313292A CN201110060589A CN201110060589A CN102313292A CN 102313292 A CN102313292 A CN 102313292A CN 201110060589 A CN201110060589 A CN 201110060589A CN 201110060589 A CN201110060589 A CN 201110060589A CN 102313292 A CN102313292 A CN 102313292A
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- bobbin carriage
- air preheater
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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 invention provides an air outlet structure of a tubular air preheater, which can be used for reasonably distributing temperatures of primary air and secondary air to ensure that the primary air has high drying efficiency to pulverized coal so that heat efficiency of combustion is increased. The air outlet structure comprises an upper channel group of an upper-stage air preheater channel, a lower channel group of the upper-stage air preheater channel, an upper channel group of a low-stage air preheater channel and a lower channel group of the low-stage air preheater channel. The air outlet structure is characterized in that a cold air inlet is communicated with the lower channel group of the low-stage air preheater channel, the upper channel group of the low-stage air preheater channel comprises three horizontal independent channels, the lower channel group of the low-stage air preheater channel is respectively corresponding connected with the three independent channels of the upper channel group of the low-stage air preheater channel at the upper part of the air outlet structure through a lower communicating box, the lower channel group of the upper-stage air preheater channel comprises three horizontal independent channels, the three independent channels of the upper channel group of the low-stage air preheater channel are respectively correspondingly connected with the three independent channels of the lower channel group of the upper-stage air preheater channel at the upper part of the air outlet structure through an upper communicating box.
Description
Technical field
The present invention relates to the technical field of structures of tubular air preheater, be specially the air outlet structure of tubular air preheater.
Background technology
Tubular air preheater is to utilize flue gas heat to come burn a kind of gas-gas-heat exchanger of needed air of heating boiler, is important in the station boiler, indispensable parts.The main effect of air preheater is a heating flame air reduction exhaust gas temperature also, improves boiler efficiency.Wherein an important function is that flue gas arrives uniform temperature with air heat, can make the dry and volatile matter effusion quickening of fuel.
When boiler used the higher coal of moisture, the desiccant temperature that coal dust needs was higher, needed to obtain about about 380 a ℃ hot blast; Just can reach the requirement that the pulverized coal preparation system drying is exerted oneself; And the secondary hot-air that air preheater comes out only needs about about 320 ℃ to go to participate in burning, and the air outlet of existing tubular air preheater leads to a wind, the secondary wind position of boiler through different pipelines, makes that the temperature of wind, secondary wind position is identical; Though the temperature of secondary wind can be guaranteed; But the temperature of a wind is on the low side, and feasible drying efficiency to coal dust reduces, and then the thermal efficiency of burning descends.
Summary of the invention
To the problems referred to above, the invention provides the air outlet structure of tubular air preheater, the temperature of wind of its ability reasonable distribution, secondary wind makes that a wind is high to the drying efficiency of coal dust, and then improves the thermal efficiency of burning.
The air outlet structure of tubular air preheater; Its technical scheme is such: it comprises that organizing bobbin carriage, higher level's air preheater bobbin carriage on higher level's air preheater bobbin carriage organizes bobbin carriage, subordinate's air preheater bobbin carriage group bobbin carriage down on group bobbin carriage, the subordinate's air preheater bobbin carriage down; It is characterized in that: inlet of cold air is communicated with group bobbin carriage under the said subordinate air preheater bobbin carriage; The group bobbin carriage is divided into three independent bobbin carriages of level on the said subordinate air preheater bobbin carriage; Said subordinate air preheater bobbin carriage down group bobbin carriage is communicated with three independent bobbin carriages of group bobbin carriage on the corresponding said subordinate air preheater bobbin carriage that connects its top of case respectively through the bottom; Said higher level's air preheater bobbin carriage is organized three independent bobbin carriages that bobbin carriage is divided into level down; Three independent bobbin carriages of group bobbin carriage are communicated with case through top respectively and connect the corresponding said higher level's air preheater bobbin carriage in its top three independent bobbin carriages of group bobbin carriage down on the said subordinate air preheater bobbin carriage; The outlet of the corresponding connection of both sides bobbin carriage secondary wind, the middle bobbin carriage of organizing three independent bobbin carriages of bobbin carriage under said higher level's air preheater bobbin carriage connect through pipeline organizes bobbin carriage on said higher level's air preheater bobbin carriage, organize a wind outlet of bobbin carriage connection on said higher level's air preheater bobbin carriage.
After adopting structure of the present invention; Secondary wind is from the group bobbin carriage outflow down of higher level's air preheater bobbin carriage; Promptly reach about 320 ℃, a wind is organized bobbin carriage and is fully heated on higher level's air preheater bobbin carriage, and promptly the heat of group bobbin carriage is all absorbed by the middle bobbin carriage of group bobbin carriage under higher level's air preheater bobbin carriage on higher level's air preheater bobbin carriage; Guarantee that a wind-warm syndrome degree reaches about 380 ℃; The temperature of wind of its ability reasonable distribution, secondary wind makes that a wind is high to the drying efficiency of coal dust, and then improves the thermal efficiency of burning.
Description of drawings
Fig. 1 is a front view structural representation of the present invention;
Fig. 2 is the right view structural representation of Fig. 1.
The specific embodiment
See Fig. 1, Fig. 2; It comprises that group bobbin carriage 1, higher level's air preheater bobbin carriage are organized bobbin carriage 3, subordinate's air preheater bobbin carriage group bobbin carriage 4 down on group bobbin carriage 2, the subordinate's air preheater bobbin carriage down on higher level's air preheater bobbin carriage; Inlet of cold air is communicated with subordinate's air preheater bobbin carriage group bobbin carriage 4 down; Group bobbin carriage 3 is divided into three independent bobbin carriages of level on subordinate's air preheater bobbin carriage; Subordinate's air preheater bobbin carriage down group bobbin carriage 4 is communicated with three independent bobbin carriages of group bobbin carriage 3 on the corresponding subordinate's air preheater bobbin carriage that connects its tops of case 5 respectively through the bottom; Higher level's air preheater bobbin carriage is organized three independent bobbin carriages that bobbin carriage 2 is divided into level down; Three independent bobbin carriages of group bobbin carriage 3 are communicated with case 6 through top respectively and connect the corresponding higher level's air preheater bobbin carriage in its top three independent bobbin carriages of group bobbin carriage 2 down on subordinate's air preheater bobbin carriage; Higher level's air preheater bobbin carriage 7, the 8 corresponding connection secondary wind outlets of both sides bobbin carriage, middle bobbin carriage 9 of three independent bobbin carriages of group bobbin carriage 2 down connects group bobbin carriage 1 on higher level's air preheater bobbin carriage through pipeline 10, organizes bobbin carriage 1 on higher level's air preheater bobbin carriage and connects a wind outlet.
Claims (1)
1. the air outlet structure of tubular air preheater; It comprises that organizing bobbin carriage, higher level's air preheater bobbin carriage on higher level's air preheater bobbin carriage organizes bobbin carriage, subordinate's air preheater bobbin carriage group bobbin carriage down on group bobbin carriage, the subordinate's air preheater bobbin carriage down; It is characterized in that: inlet of cold air is communicated with group bobbin carriage under the said subordinate air preheater bobbin carriage; The group bobbin carriage is divided into three independent bobbin carriages of level on the said subordinate air preheater bobbin carriage; Said subordinate air preheater bobbin carriage down group bobbin carriage is communicated with three independent bobbin carriages of group bobbin carriage on the corresponding said subordinate air preheater bobbin carriage that connects its top of case respectively through the bottom; Said higher level's air preheater bobbin carriage is organized three independent bobbin carriages that bobbin carriage is divided into level down; Three independent bobbin carriages of group bobbin carriage are communicated with case through top respectively and connect the corresponding said higher level's air preheater bobbin carriage in its top three independent bobbin carriages of group bobbin carriage down on the said subordinate air preheater bobbin carriage; The outlet of the corresponding connection of both sides bobbin carriage secondary wind, the middle bobbin carriage of organizing three independent bobbin carriages of bobbin carriage under said higher level's air preheater bobbin carriage connect through pipeline organizes bobbin carriage on said higher level's air preheater bobbin carriage, organize a wind outlet of bobbin carriage connection on said higher level's air preheater bobbin carriage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100605890A CN102313292B (en) | 2011-03-14 | 2011-03-14 | Air outlet structure of tubular air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100605890A CN102313292B (en) | 2011-03-14 | 2011-03-14 | Air outlet structure of tubular air preheater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102313292A true CN102313292A (en) | 2012-01-11 |
| CN102313292B CN102313292B (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100605890A Expired - Fee Related CN102313292B (en) | 2011-03-14 | 2011-03-14 | Air outlet structure of tubular air preheater |
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| CN (1) | CN102313292B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113209907A (en) * | 2021-06-04 | 2021-08-06 | 江西斯米克陶瓷有限公司 | Control method for ceramic spray drying tower |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200972138Y (en) * | 2006-09-28 | 2007-11-07 | 无锡华光锅炉股份有限公司 | Two-way adjustable parallel box separation type air preheater |
| CN201133777Y (en) * | 2007-09-29 | 2008-10-15 | 大连熵立得传热技术有限公司 | Air pre-heating device for high-temperature flue gas |
| CN201973736U (en) * | 2011-03-14 | 2011-09-14 | 无锡华光锅炉股份有限公司 | Air outlet structure of tubular air heaters |
-
2011
- 2011-03-14 CN CN2011100605890A patent/CN102313292B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200972138Y (en) * | 2006-09-28 | 2007-11-07 | 无锡华光锅炉股份有限公司 | Two-way adjustable parallel box separation type air preheater |
| CN201133777Y (en) * | 2007-09-29 | 2008-10-15 | 大连熵立得传热技术有限公司 | Air pre-heating device for high-temperature flue gas |
| CN201973736U (en) * | 2011-03-14 | 2011-09-14 | 无锡华光锅炉股份有限公司 | Air outlet structure of tubular air heaters |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113209907A (en) * | 2021-06-04 | 2021-08-06 | 江西斯米克陶瓷有限公司 | Control method for ceramic spray drying tower |
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| Publication number | Publication date |
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| CN102313292B (en) | 2013-07-31 |
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Granted publication date: 20130731 Termination date: 20190314 |
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