CN102297448A - Air pre-heater with rotary heating surface and waste heat recovery system - Google Patents
Air pre-heater with rotary heating surface and waste heat recovery system Download PDFInfo
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- CN102297448A CN102297448A CN201110170468A CN201110170468A CN102297448A CN 102297448 A CN102297448 A CN 102297448A CN 201110170468 A CN201110170468 A CN 201110170468A CN 201110170468 A CN201110170468 A CN 201110170468A CN 102297448 A CN102297448 A CN 102297448A
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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
Abstract
The invention discloses an air pre-heater with a rotary heating surface which comprises a shell. A cylindrical rotor is rotationally arranged in the shell in the vertical direction, a smoke channel is arranged on the right side of the shell in the vertical direction, a low-pressure secondary air channel and a high-pressure primary air channel are respectively arranged on the left side of the shell in the vertical direction and respectively pass through a chamber of the rotor in the shell, the lower ends of the low-pressure secondary air channel and the high-pressure primary air channel are provided with air inlets, the upper ends of the low-pressure secondary air channel and the high-pressure primary air channel are provided with air outlets, and the shell is provided with an air circulating channel between the smoke channel and the high-pressure primary air channel or between the smoke channel and the low-pressure secondary air channel in the vertical direction. Through the air pre-heater with the rotary heating surface and a waste heat recovery system, disclosed by the invention, dust and scales deposited on the inner wall of the chamber and the surface of a heat transfer component can be reduced or avoided, the dust deposited on the inner wall of the chamber and the surface of a heat transfer component is more conveniently cleaned, the heat transfer efficiency is high, and the service life is long.
Description
Technical field
The present invention relates to a kind of heating surface rotary regenerative air preheater and residual neat recovering system.
Background technology
Existing heating surface rotary regenerative air preheater, normally comprise housing, vertically columnar rotor can be installed rotationally in the housing, radially vertical direction is provided with a plurality of dividing plates in the rotor, dividing plate is divided into rotor the bin of plurality of sector, be respectively equipped with heat transfer element in each bin, the right side of described housing vertically is provided with exhaust gases passes, exhaust gases passes passes the bin of housing internal rotor, the lower end of exhaust gases passes is an outlet flue, the upper end of exhaust gases passes is for advancing mouth, the left side of described housing vertically is respectively equipped with low pressure secondary air channel and wind passage of high pressure, wind passage of low pressure secondary air channel and high pressure passes the bin of housing internal rotor respectively, the lower end of a low pressure secondary air channel and a wind passage of high pressure is an air inlet, the upper end of a low pressure secondary air channel and a wind passage of high pressure is an air outlet, in use, rotor rotates under the dragging of motor, the flue gas that has a large amount of heats passes through exhaust gases passes from top to bottom, and heat each bin that is arranged in exhaust gases passes and rotate the heat transfer element that passes through, allow the temperature of heat transfer element raise rapidly, when heated heat transfer element rotates to the low pressure secondary air channel, after in wind passage of high pressure, from bottom to top by the low pressure secondary air channel, the air of a wind passage of high pressure will be heated by heat transfer element, thereby the heat transferred in the flue gas is passed through the low pressure secondary air channel, the air of a wind passage of high pressure.But existing heating surface rotary regenerative air preheater in use, can produce the coagulation in a certain amount of flue gas, coagulation in these flue gases can deposit on the inwall of bin of temperature lower and on the surface of heat transfer element, because the coagulative existence in these flue gases is arranged, can cause building up on the inwall of bin and on the surface of heat transfer element a large amount of dusts, and finally cause exhaust gases passes, the low pressure secondary air channel, wind passage of high pressure seriously is obstructed, heat exchange efficiency reduces significantly, need clear up mediation to such an extent as to have to, equipment could operate as normal.In addition, the method for the dust of building up on the inwall of existing cleaning bin and the surface of heat transfer element is to utilize pressed gas to blow ash, and its cleaning effect is relatively poor, causes the equipment heat exchange efficiency to reduce thus, and causes the waste of the energy.
Summary of the invention
The purpose of this invention is to provide and a kind ofly reduce or avoid on the inwall of bin and dust stratification, incrustation on the surface of heat transfer element, dust stratification on the inwall of cleaning bin and on the surface of heat transfer element, incrustation are convenient, the heat exchange efficiency height, the heating surface rotary regenerative air preheater and the residual neat recovering system of long service life.
Heating surface rotary regenerative air preheater of the present invention, comprise housing, vertically columnar rotor can be installed rotationally in the housing, radially vertical direction is provided with a plurality of dividing plates in the rotor, dividing plate is divided into rotor the bin of plurality of sector, be respectively equipped with heat transfer element in each bin, the right side of described housing vertically is provided with exhaust gases passes, exhaust gases passes passes the bin of housing internal rotor, the lower end of exhaust gases passes is an outlet flue, the upper end of exhaust gases passes is for advancing mouth, the left side of described housing vertically is respectively equipped with low pressure secondary air channel and wind passage of high pressure, wind passage of low pressure secondary air channel and high pressure passes the bin of housing internal rotor respectively, the lower end of a low pressure secondary air channel and a wind passage of high pressure is an air inlet, the upper end of a low pressure secondary air channel and a wind passage of high pressure is an air outlet, on the described housing between exhaust gases passes and wind passage of high pressure or vertically be provided with the circulated air passage between exhaust gases passes and the low pressure secondary air channel, the circulated air passage passes the bin of rotor, the lower end of circulated air passage is an air inlet, and the upper end of circulated air passage is an air outlet.
Use the residual neat recovering system of heating surface rotary regenerative air preheater of the present invention, comprise the heating surface rotary regenerative air preheater, the heating surface rotary regenerative air preheater comprises housing, vertically columnar rotor can be installed rotationally in the housing, radially vertical direction is provided with a plurality of dividing plates in the rotor, dividing plate is divided into rotor the bin of plurality of sector, be respectively equipped with heat transfer element in each bin, the right side of described housing vertically is provided with exhaust gases passes, exhaust gases passes passes the bin of housing internal rotor, the lower end of exhaust gases passes is an outlet flue, the upper end of exhaust gases passes is for advancing mouth, the left side of described housing vertically is respectively equipped with low pressure secondary air channel and wind passage of high pressure, wind passage of low pressure secondary air channel and high pressure passes the bin of housing internal rotor respectively, the lower end of a low pressure secondary air channel and a wind passage of high pressure is an air inlet, the upper end of a low pressure secondary air channel and a wind passage of high pressure is an air outlet, on the described housing between exhaust gases passes and wind passage of high pressure or vertically be provided with the circulated air passage between exhaust gases passes and the low pressure secondary air channel, the circulated air passage passes the bin of rotor, the lower end of circulated air passage is an air inlet, the upper end of circulated air passage is an air outlet, the pipeline section that is positioned at air opening end on wind passage of described high pressure links to each other with the air inlet of return line, the air outlet of return line links to each other with the air inlet of described circulated air passage, the air outlet of described circulated air passage links to each other with the pipeline section of described low pressure secondary air channel air opening end, described circulated air passage carries the outlet of airduct to link to each other with abrasive material, abrasive material is carried on the airduct and is in series with pipe valve, and abrasive material carries the import of airduct to link to each other with storehouse formula strength delivery pump.
Residual neat recovering system of the present invention is in series with pipe valve on the wherein said return line.
Heating surface rotary regenerative air preheater of the present invention and the system that uses this preheater are in use, its rotor rotates under the dragging of motor, the flue gas that has a large amount of heats passes through exhaust gases passes from top to bottom, and heat each bin that is arranged in exhaust gases passes and rotate the heat transfer element that passes through, allow the temperature of heat transfer element raise rapidly, when heated heat transfer element rotates to the low pressure secondary air channel, after in wind passage of high pressure, from bottom to top by the low pressure secondary air channel, the air of a wind passage of high pressure will be heated by heat transfer element, thereby the heat transferred in the flue gas is passed through the low pressure secondary air channel, the air of a wind passage of high pressure, the part of the hot-air that comes out from a wind passage of high pressure top is transported to the air inlet of circulated air passage lower end by return line and then upwards enters the top of low pressure secondary air channel by the circulated air passage, converge with the hot-air in the low pressure secondary air channel, in this course, from the hot-air of a wind passage of high pressure can be from bottom to top the heating rotation by the circulated air passage each bin and be positioned at the heat transfer element of bin, add at a high speed and can blow the dust and the incrustation that may exist off, make its surface accumulate dust by each the bin inwall of circulated air passage and the thermal current on the surface of the heat transfer element that is positioned at bin, incrustation.Therefore, heating surface rotary regenerative air preheater of the present invention and residual neat recovering system can improve the heat exchange efficiency and the service life of equipment, avoiding energy waste, and can reduce labor cleaning's number of times, reduce working strength of workers.
Specific embodiments of the present invention are further described in detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the structural representation of heating surface rotary regenerative air preheater of the present invention and residual neat recovering system.
The specific embodiment
As shown in Figure 1, heating surface rotary regenerative air preheater of the present invention, comprise housing 1, vertically columnar rotor 2 can be installed rotationally in the housing 1, the axis of the rotating shaft of rotor 2 is positioned at vertical direction, rotating shaft go up, following two ends are installed on the housing 1 by bearing, radially vertical direction is provided with a plurality of dividing plates in the rotor 2, dividing plate is divided into rotor 2 bin of plurality of sector (overlook and see), be respectively equipped with heat transfer element in each bin, right side at housing 1 vertically is provided with exhaust gases passes 3, exhaust gases passes 3 passes the bin of housing 1 internal rotor 2, the lower end of exhaust gases passes 3 is an outlet flue, the upper end of exhaust gases passes 3 is for advancing mouth, the left side of housing 1 vertically is respectively equipped with low pressure secondary air channel 4 and wind passage 5 of high pressure, wind passage 5 of low pressure secondary air channel 4 and high pressure passes the bin of housing 1 internal rotor 2 respectively, the lower end of a low pressure secondary air channel 4 and a wind passage 5 of high pressure is an air inlet, the upper end of a low pressure secondary air channel 4 and a wind passage 5 of high pressure is an air outlet, on the housing 1 between exhaust gases passes 3 and wind passage 5 of high pressure or vertically be provided with circulated air passage 6 between exhaust gases passes 3 and the low pressure secondary air channel 4, circulated air passage 6 passes the bin of rotor 2, the lower end of circulated air passage 6 is an air inlet, and the upper end of circulated air passage 6 is an air outlet.
Above-mentioned circulated air passage 6 need be arranged on heat transfer element and be about to rotate into exhaust gases passes 3 places, therefore, the setting of circulated air passage 6 is relevant with turning to of rotor 2, if heat transfer element is to be about to enter exhaust gases passes 3 after leaving wind passage 5 of high pressure, then circulated air passage 6 just is arranged between exhaust gases passes 3 and wind passage 5 of high pressure.If heat transfer element is to enter exhaust gases passes 3 in low pressure secondary air channel 4 backs, then circulated air passage 6 just is arranged between exhaust gases passes 3 and the low pressure secondary air channel 4 at once.
Use the residual neat recovering system of above-mentioned heating surface rotary regenerative air preheater, as shown in Figure 1, comprise the heating surface rotary regenerative air preheater, the heating surface rotary regenerative air preheater comprises housing 1, vertically columnar rotor 2 can be installed rotationally in the housing 1, radially vertical direction is provided with a plurality of dividing plates in the rotor 2, dividing plate is divided into rotor 2 bin of plurality of sector, be respectively equipped with heat transfer element in each bin, the right side of housing 1 vertically is provided with exhaust gases passes 3, exhaust gases passes 3 passes the bin of housing 1 internal rotor 2, the lower end of exhaust gases passes 3 is an outlet flue, the upper end of exhaust gases passes 3 is for advancing mouth, the left side of housing 1 vertically is respectively equipped with low pressure secondary air channel 4 and wind passage 5 of high pressure, wind passage 5 of low pressure secondary air channel 4 and high pressure passes the bin of housing 1 internal rotor 2 respectively, the lower end of a low pressure secondary air channel 4 and a wind passage 5 of high pressure is an air inlet, the upper end of a low pressure secondary air channel 4 and a wind passage 5 of high pressure is an air outlet, on the housing 1 between exhaust gases passes 3 and wind passage 5 of high pressure or vertically be provided with circulated air passage 6 between exhaust gases passes 3 and the low pressure secondary air channel 4, circulated air passage 6 passes the bin of rotor 2, the lower end of circulated air passage 6 is an air inlet, the upper end of circulated air passage 6 is an air outlet, the pipeline section that is positioned at air opening end on wind passage 5 of high pressure links to each other with the air inlet of return line 7, the air outlet of return line 7 links to each other with the air inlet of circulated air passage 6, the air outlet of circulated air passage 6 links to each other with the pipeline section of low pressure secondary air channel 4 air opening ends, circulated air passage 6 carries the outlet of airduct 8 to link to each other with abrasive material, abrasive material is carried on the airduct 8 and is in series with pipe valve, and abrasive material carries the import of airduct 8 to link to each other with storehouse formula strength delivery pump 9.
Be in series with the pipe valve that is used to regulate air quantity on the above-mentioned return line 7.
Heating surface rotary regenerative air preheater of the present invention and residual neat recovering system are in use, its rotor 2 rotates under the dragging of motor, the flue gas that has a large amount of heats is from top to bottom by exhaust gases passes 3, and heat each bin that is arranged in exhaust gases passes 3 and rotate the heat transfer element that passes through, allow the temperature of heat transfer element raise rapidly, when heated heat transfer element rotates to low pressure secondary air channel 4, after in wind passage of high pressure 5, from bottom to top by low pressure secondary air channel 4, the air of a wind passage 5 of high pressure will be heated by heat transfer element, thereby the heat transferred in the flue gas is passed through low pressure secondary air channel 4, the air of a wind passage 5 of high pressure, the part of the hot-air that comes out from wind passage 5 tops of high pressure is transported to the air inlet of circulated air passage 6 lower ends by return line 7 and then upwards enters the top of low pressure secondary air channel 4 by circulated air passage 6, converge with the hot-air in the low pressure secondary air channel 4, in this course, from the hot-air of a wind passage 5 of high pressure can be from bottom to top the heating rotation by circulated air passage 6 each bin and be positioned at the heat transfer element of bin, allow the condensable matter in the flue gas can't condensation, add at a high speed and can blow the dust and the incrustation that may exist off, make its surface accumulate dust by each the bin inwall of circulated air passage 6 and the thermal current on the surface of the heat transfer element that is positioned at bin, incrustation.Therefore, heating surface rotary regenerative air preheater of the present invention and residual neat recovering system can improve the heat exchange efficiency and the service life of equipment, avoiding energy waste, and can reduce labor cleaning's number of times, reduce working strength of workers.
Clear up bin inwall and the surface that is positioned at the heat transfer element of bin on the rotor 2 if desired, can open abrasive material and carry the pipe valve of series connection on the airduct 8, and startup storehouse formula strength delivery pump 9, the air that allows storehouse formula strength delivery pump 9 carry airduct 8 will have a certain amount of abrasive material by abrasive material is sent into circulated air passage 6, utilizes the abrasive material in the air-flow to dispose dust and the incrustation that accumulates in the bin inwall and the surface of the heat transfer element that is positioned at bin.Employed abrasive material can be special-purpose abrasive material, as quartz sand, river sand, carborundum etc., also can be dust granule of collecting of electric cleaner etc.
Embodiment recited above is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the spiritual prerequisite not breaking away from the present invention; various distortion and improvement that the common engineers and technicians in this area make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (3)
1. heating surface rotary regenerative air preheater, comprise housing (1), vertically columnar rotor (2) can be installed rotationally in the housing (1), radially vertical direction is provided with a plurality of dividing plates in the rotor (2), dividing plate is divided into rotor (2) bin of plurality of sector, be respectively equipped with heat transfer element in each bin, the right side of described housing (1) vertically is provided with exhaust gases passes (3), exhaust gases passes (3) passes the bin of housing (1) internal rotor (2), the lower end of exhaust gases passes (3) is an outlet flue, the upper end of exhaust gases passes (3) is for advancing mouth, the left side of described housing (1) vertically is respectively equipped with a low pressure secondary air channel (4) and a wind passage of high pressure (5), a wind passage of low pressure secondary air channel (4) and high pressure (5) passes the bin of housing (1) internal rotor (2) respectively, the lower end of a wind passage of low pressure secondary air channel (4) and high pressure (5) is an air inlet, the upper end of a wind passage of low pressure secondary air channel (4) and high pressure (5) is an air outlet, it is characterized in that being positioned on the described housing (1) between an exhaust gases passes (3) and the wind passage of high pressure (5) or between exhaust gases passes (3) and the low pressure secondary air channel (4) and vertically be provided with circulated air passage (6), circulated air passage (6) passes the bin of rotor (2), the lower end of circulated air passage (6) is an air inlet, and the upper end of circulated air passage (6) is an air outlet.
2. use the residual neat recovering system of the described heating surface rotary regenerative air preheater of claim 1, comprise the heating surface rotary regenerative air preheater, the heating surface rotary regenerative air preheater comprises housing (1), vertically columnar rotor (2) can be installed rotationally in the housing (1), radially vertical direction is provided with a plurality of dividing plates in the rotor (2), dividing plate is divided into rotor (2) bin of plurality of sector, be respectively equipped with heat transfer element in each bin, the right side of described housing (1) vertically is provided with exhaust gases passes (3), exhaust gases passes (3) passes the bin of housing (1) internal rotor (2), the lower end of exhaust gases passes (3) is an outlet flue, the upper end of exhaust gases passes (3) is for advancing mouth, the left side of described housing (1) vertically is respectively equipped with a low pressure secondary air channel (4) and a wind passage of high pressure (5), a wind passage of low pressure secondary air channel (4) and high pressure (5) passes the bin of housing (1) internal rotor (2) respectively, the lower end of a wind passage of low pressure secondary air channel (4) and high pressure (5) is an air inlet, the upper end of a wind passage of low pressure secondary air channel (4) and high pressure (5) is an air outlet, it is characterized in that being positioned on the described housing (1) between an exhaust gases passes (3) and the wind passage of high pressure (5) or between exhaust gases passes (3) and the low pressure secondary air channel (4) and vertically be provided with circulated air passage (6), circulated air passage (6) passes the bin of rotor (2), the lower end of circulated air passage (6) is an air inlet, the upper end of circulated air passage (6) is an air outlet, the pipeline section that is positioned at air opening end on the wind passage of described high pressure (5) links to each other with the air inlet of return line (7), the air outlet of return line (7) links to each other with the air inlet of described circulated air passage (6), the air outlet of described circulated air passage (6) links to each other with the pipeline section of described low pressure secondary air channel (4) air opening end, described circulated air passage (6) carries the outlet of airduct (8) to link to each other with abrasive material, abrasive material is carried on the airduct (8) and is in series with pipe valve, and abrasive material carries the import of airduct (8) to link to each other with storehouse formula strength delivery pump (9).
3. residual neat recovering system according to claim 2 is characterized in that being in series with pipe valve on the described return line (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110170468.1A CN102297448B (en) | 2011-06-23 | 2011-06-23 | Air pre-heater with rotary heating surface and residual neat recovering system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110170468.1A CN102297448B (en) | 2011-06-23 | 2011-06-23 | Air pre-heater with rotary heating surface and residual neat recovering system |
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| Publication Number | Publication Date |
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| CN102297448A true CN102297448A (en) | 2011-12-28 |
| CN102297448B CN102297448B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110170468.1A Active CN102297448B (en) | 2011-06-23 | 2011-06-23 | Air pre-heater with rotary heating surface and residual neat recovering system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175437A (en) * | 2012-11-20 | 2013-06-26 | 孟金来 | Flexible contact-type sealing device |
| CN106546124A (en) * | 2016-11-04 | 2017-03-29 | 国家电网公司 | A kind of anti-blocking apparatus for ash of circulated air and rotary regenerative air preheater |
| CN106765283A (en) * | 2016-12-16 | 2017-05-31 | 国网浙江省电力公司电力科学研究院 | A kind of Thermal generation unit and its rotary regenerative air preheater |
| CN109373800A (en) * | 2018-10-10 | 2019-02-22 | 广东粤电靖海发电有限公司 | Can on-line cleaning rotary air preheating system and on-line cleaning method |
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| JP2001021140A (en) * | 1999-07-05 | 2001-01-26 | Ishikawajima Harima Heavy Ind Co Ltd | Rotary heat accumulative heat exchanger |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175437A (en) * | 2012-11-20 | 2013-06-26 | 孟金来 | Flexible contact-type sealing device |
| CN106546124A (en) * | 2016-11-04 | 2017-03-29 | 国家电网公司 | A kind of anti-blocking apparatus for ash of circulated air and rotary regenerative air preheater |
| CN106765283A (en) * | 2016-12-16 | 2017-05-31 | 国网浙江省电力公司电力科学研究院 | A kind of Thermal generation unit and its rotary regenerative air preheater |
| CN109373800A (en) * | 2018-10-10 | 2019-02-22 | 广东粤电靖海发电有限公司 | Can on-line cleaning rotary air preheating system and on-line cleaning method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102297448B (en) | 2016-08-24 |
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Effective date of registration: 20220606 Address after: 100031 room 1216, 12 / F, 129 Xuanwumen West Street, Xicheng District, Beijing Patentee after: Beijing Huanengda Electric Power Technology Application Co.,Ltd. Address before: 100034 1606, unit 2, 4th floor, No.8 Guanyuan, yulangxiyuan, Xicheng District, Beijing Patentee before: Meng Jinlai |