CN100501241C - Plate type air preheater - Google Patents
Plate type air preheater Download PDFInfo
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- CN100501241C CN100501241C CNB2005100768746A CN200510076874A CN100501241C CN 100501241 C CN100501241 C CN 100501241C CN B2005100768746 A CNB2005100768746 A CN B2005100768746A CN 200510076874 A CN200510076874 A CN 200510076874A CN 100501241 C CN100501241 C CN 100501241C
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- plate
- air
- bobbin carriage
- water conservancy
- conservancy diversion
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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 relates to a sheet air preheating device, which comprises: a box, a heat exchange element, and an air-smoke entrance tubular box, wherein said box is arranged with sheet heat exchange element formed by sheet beam with at least one layer of one sheet beam module; the upper end of sheet beam is through to the smoke inlet tubular box and the air outlet tubular box, while the lower end is through to the smoke outlet tubular box and the air inlet tubular box; the sheet beam module is formed by layered ripple sheets; the air-smoke channels of sheet beam module are sealed channels with reversed direction. The invention uses reverse flow to exchange heat, with high efficiency, small volume, light weight and low cost.
Description
Technical field
The present invention relates to a kind of plate air preheater that is used for the high-temperature flue gas of boiler, heating furnace and waste gas catalytic incineration stove and the used cold air heat exchange of burning are carried out Waste Heat Recovery.
Background technology
At present, represented the development main flow direction of heat transmission equipment with corrugated cardboard sheet as the heat transmission equipment of heat transfer element, increasing pipe type heat transfer equipment maybe will be substituted by plate-type heat-exchange equipment.
Air preheater mostly is heat pipe-type, shell and tube, heat accumulating type and plate-fin air preheater in the prior art, and the ubiquity heat transfer efficiency is low, leak out, volume is big, easy shortcoming such as dust stratification and long-term operation cost height.And the existing corrugated cardboard sheet that adopts mostly is channels interleaved as the air preheater of heat transfer element, and heat transfer efficiency is low, can't solve the matching problem of heat transfer efficiency and pressure drop.
Summary of the invention
The purpose of this invention is to provide the pure countercurrent flow of a kind of employing, the heat transfer efficiency height, volume is little, in light weight, long-term operation is reliable and cost is low, be difficult for the New-type plate air preheater of dust stratification.
The present invention is achieved in that a kind of plate air preheater, comprise: casing, heat-exchanging part and air and flue gas inlet/outlet bobbin carriage, the heat-exchanging part that is provided with in the described casing, heat-exchanging part becomes plate tread assembly I by every layer of one deck at least by plate bundle module combinations, plate tread assembly I upper end is connected with smoke inlet bobbin carriage and air outlet slit bobbin carriage, plate tread assembly lower end is connected with the air intake bobbin carriage with the exhanst gas outlet bobbin carriage, described plate bundle module constitutes by corrugated cardboard sheet is superimposed, and the air in the plate bundle module is the opposite airtight passage of direction with exhaust gases passes.
Described corrugated cardboard sheet is shaped as hexagon, its upper and lower triangle distribution water conservancy diversion district that is respectively equipped with, the centre is the rectangle heat transfer zone, described rectangle heat transfer zone is made of heat transfer ripple and support ripple, and described heat transfer ripple is trapezoidal or S shape or triangle continuous wave pattern or interrupted ripple with supporting ripple; Parallel airtight exhaust gases passes A and air duct B between the ripple that these both sides, superimposed back of corrugated cardboard sheet symmetry form; The height h of described exhaust gases passes A, the height H of air duct B, h ≠ H or h=H.The direction of exhaust gases passes A and air duct B is opposite, described distribution water conservancy diversion district is that holding or bridging type connect with middle part rectangle heat transfer zone, described upper and lower angular distribution water conservancy diversion district is mutual reversed dip corrugated plating, and the same medium channel of described middle part rectangle heat transfer zone is communicated with the same medium channel of going into, export triangle distribution water conservancy diversion district of reversed dip corrugated plating respectively.
The upper and lower interlaced setting of described smoke inlet bobbin carriage and air outlet slit bobbin carriage and exhanst gas outlet bobbin carriage and air intake bobbin carriage.
Described corrugated cardboard sheet is superimposed affixed or be spliced into plate bundle module.
It is mutual reversed dip corrugated plating that the plate bundle module two ends of described plate tread assembly are respectively equipped with triangle distribution water conservancy diversion district, and described triangle distribution water conservancy diversion district ripple is continuous wave pattern or interrupted ripple; Described distribution water conservancy diversion district is cusp or arc transition or is flat-top shape away from the triangular apex of rectangle heat transfer zone.
Be provided with in the described casing by 1-6 laminate bundle module, triangle distribution water conservancy diversion district inner gas passage A that every laminate bundle module is upper and lower and air duct B are the medium channel that inclination corrugated plating that a last left side, bottom right are crisscross arranged constitutes; The medium channel that the inclination corrugated plating that the triangle distribution water conservancy diversion district exhaust gases passes A of upper and lower plate bundle module of facing mutually and air duct B also are crisscross arranged for a last left side, bottom right constitutes.
Positive role of the present invention is:
1, plate air preheater adopts corrugated cardboard sheet as heat transfer element, plate smooth surface and do not have flow dead, and it is convenient to blow ash, has solved equipment dust stratification problem.
2, the plate ripple has guiding, supporting role when strengthening heat transfer, and the superimposed back of plate forms exhaust gases passes and air duct respectively in the plate both sides and need not set up support member between other plate, and equipment is compact more, greatly reduces weight of equipment.
3, plate air preheater adopts pure countercurrent corrugated board, flue gas and air are pure adverse current in the plate both sides, the exhaust gases passes height is corresponding with the rerum natura of flue gas and air respectively with the air duct height, thereby the overall performance of equipment is more optimized when having improved heat transfer efficiency greatly.
4, the modular construction of plate Shu Caiyong can be exchanged between the module and combination arbitrarily fully, has solved manufacturing, the installation question of super large template bundle, has realized equipment enlarging.
Different with requirement for anticorrosion according to operating temperature, equipment can adopt segment design, and each section uses unlike material, satisfies the requirement of different operating modes, as using the heat resistance better material in the hot environment more than 700 ℃; Use anticorrosive materials such as titanium occurring the low-temperature dew point corrosion operating mode below 170-180 ℃, recyclable more heats, and the overall cost of equipment is effectively controlled.
5, between the plate, between the plate bundle module and flue gas all adopt welding or other form hermetically-sealed construction with air branch journey place, do not have leakage mutually between flue gas and the air, thoroughly solve the air-heater leakage problem.The equipment long-term operation is reliable, and running cost reduces greatly.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the present invention's two laminate tread assembly example structure schematic diagrames.
Fig. 3 is a three ply board tread assembly example structure schematic diagram of the present invention.
Fig. 4 is a corrugated board structure schematic diagram of the present invention.
Fig. 5 is flue gas and the unequal cross-sectional view of air duct height.
Fig. 6 is that flue gas and air duct height equate cross-sectional view.
The numbering explanation
1, casing 2, air outlet slit bobbin carriage 3, smoke inlet bobbin carriage
4, plate bundle module 402, heat transfer zone 401, distribution water conservancy diversion district
403, distribution water conservancy diversion district 4401, heat transfer ripple 4402, heat transfer zone
5, air intake bobbin carriage 6, exhanst gas outlet bobbin carriage 7. plate tread assembly I
8, plate tread assembly II 9 plate tread assembly III
Low-temperature flue gas B air duct after A, exhaust gases passes A ', the heat exchange
High temperature air after B ' heat exchange
The specific embodiment
The plate air preheater of 1: one laminate bundle of embodiment plate tread assembly.
Structure as shown in Figure 1, comprise: casing 1, heat-exchanging part and air and flue gas inlet/outlet bobbin carriage, the board-like heat-exchanging part that is provided with in the described casing 1, board-like heat-exchanging part is combined into plate tread assembly 7 by a laminate bundle module 4, plate tread assembly 7 upper ends are connected with smoke inlet bobbin carriage 3 and air outlet slit bobbin carriage 2, plate tread assembly lower end is connected with air intake bobbin carriage 5 with exhanst gas outlet bobbin carriage 6, described plate bundle module 4 is made of corrugated cardboard sheet, and the air in the plate bundle module 4 are the opposite airtight passage of direction with exhaust gases passes.
Described corrugated cardboard sheet is shaped as hexagon, its upper and lower triangle distribution water conservancy diversion district 401,403 that is respectively equipped with, the centre is a rectangle heat transfer zone 402, described rectangle heat transfer zone 402 is made of heat transfer ripple 4401 and support ripple 4402, and described heat transfer ripple 4401 is trapezoidal or S shape or triangle continuous wave pattern or interrupted ripple with supporting ripple 4402; Parallel airtight exhaust gases passes A and air duct B between the ripple of the superimposed back of corrugated cardboard sheet symmetry both sides formation; The height h of described exhaust gases passes A, the height H of air duct B, h ≠ H or h=H.Exhaust gases passes A is opposite with air duct B direction, described upper and lower angular distribution water conservancy diversion district 401,403 connects for holding or bridging type with middle part rectangle heat transfer zone 402, described upper and lower angular distribution water conservancy diversion district 401,403 is mutual reversed dip corrugated plating, the same medium channel of described middle part rectangle heat transfer zone 402 is communicated with the same medium channel of going into, export triangle distribution water conservancy diversion district 401,403 of reversed dip corrugated plating respectively, shown in Fig. 4-6.
Described smoke inlet bobbin carriage 3 and air outlet slit bobbin carriage 2 and exhanst gas outlet bobbin carriage 6 and the 5 upper and lower interlaced settings of air intake bobbin carriage.
Described corrugated cardboard sheet is superimposed affixed or be spliced into plate bundle module 4.
Be provided with in the described casing 1 by 1 laminate bundle module 4, different medium passage A, B are the medium channel that inclination corrugated plating that a last left side, bottom right are crisscross arranged constitutes in the upper and lower triangle distribution water conservancy diversion district 401,403 of laminate bundle module 4.
The course of work: high-temperature flue gas A flows from top to bottom, enters the plate bundle module 4 that is overlapped into by corrugated cardboard sheet after evenly distributing in smoke inlet bobbin carriage 3, and low-temperature flue gas A ' flows out from exhanst gas outlet bobbin carriage 6 after the heat exchange; Cryogenic air B is through the air intake bobbin carriage 5 even laggard entering plate bundle modules 4 that distribute, and high temperature air B ' flows out from air outlet slit bobbin carriage 2 after the heat exchange, and flue gas and air carry out pure countercurrent flow in the heat transfer process in plate bundle module 4.For satisfying seal request, 1 of 4 of plate bundle modules and plate bundle module 4 and casing all adopt and are welded to connect.
The plate air preheater of 2: two laminate tread assemblies of embodiment
As shown in Figure 2: comprising: casing 1, heat-exchanging part and air and flue gas inlet/outlet bobbin carriage, the board-like heat-exchanging part that is provided with in the described casing 1, board-like heat-exchanging part is combined into plate tread assembly I and II by upper and lower two laminate bundle modules 4, plate tread assembly I upper end is connected with smoke inlet bobbin carriage 3 and air outlet slit bobbin carriage 2, plate tread assembly II lower end is connected with air intake bobbin carriage 5 with exhanst gas outlet bobbin carriage 6, described plate bundle module 4 constitutes by corrugated cardboard sheet is superimposed, and the air in the plate bundle module 4 is the opposite airtight passage of direction with exhaust gases passes.
Described corrugated cardboard sheet is shaped as hexagon, its upper and lower triangle distribution water conservancy diversion district 401,403 that is respectively equipped with, the centre is a rectangle heat transfer zone 402, described rectangle heat transfer zone 402 is made of heat transfer ripple 4401 and support ripple 4402, and described heat transfer ripple 4401 is trapezoidal or S shape or triangle continuous wave pattern or interrupted ripple with supporting ripple 4402; Parallel airtight exhaust gases passes A and air duct B between the ripple of the superimposed back of corrugated cardboard sheet symmetry both sides formation; The height h of described exhaust gases passes A, the height H of air duct B, h ≠ H or h=H, exhaust gases passes A is opposite with air duct B direction, described upper and lower angular distribution water conservancy diversion district 401,403 connects for holding or bridging type with middle part rectangle heat transfer zone 402, described upper and lower angular distribution water conservancy diversion district 401,403 is mutual reversed dip corrugated plating, and the same medium channel of described middle part rectangle heat transfer zone 402 is communicated with the same medium channel of going into, export triangle distribution water conservancy diversion district 401,403 of reversed dip corrugated plating respectively.
Described smoke inlet bobbin carriage 3 and air outlet slit bobbin carriage 2 and exhanst gas outlet bobbin carriage 6 and the 5 upper and lower interlaced settings of air intake bobbin carriage.
Described corrugated cardboard sheet is superimposed affixed or be spliced into plate bundle module 4.
Two laminate bundle modules 4 are set in the described casing 1, and triangle distribution water conservancy diversion district 401,403 inner gas passage A that every laminate bundle module 4 is upper and lower and air duct B are the medium channel that inclination corrugated plating that a last left side, bottom right are crisscross arranged constitutes; The medium channel that the inclination corrugated plating that triangle distribution water conservancy diversion district 401, the 403 exhaust gases passes A of upper and lower plate bundle module 4 of facing mutually and air duct B also are crisscross arranged for a last left side, bottom right constitutes.
Described smoke inlet bobbin carriage 3 and air intake bobbin carriage 5 and exhanst gas outlet bobbin carriage 6 and air intake bobbin carriage 5 upper and lower being crisscross arranged.
Described plate bundle module 4 adopts upper and lower two layers, and the upper strata is middle-temperature section plate bundle module layer or plate tread assembly I, sets up the low-temperature zone plate bundle module or the plate tread assembly II of lower floor.Plate bundle module 4 structures and the course of work are not given unnecessary details with embodiment 1.
Embodiment 3: the air preheater of three ply board tread assembly.
As shown in Figure 3: upper, middle and lower-ranking plate bundle module layer is set in the described casing 1, the upper strata is high temperature section plate bundle module layer I, the centre is middle-temperature section plate bundle module layer II, and lower floor is low-temperature zone plate bundle module layer III, and plate bundle module 4 structures and arrangement mode are equal to embodiment 1,2 not to be given unnecessary details.It adopts material: top plate bundle module I adopts resistant to elevated temperatures 354 alloy materials to be fit to medium heat exchange more than 1000 ℃; Middle-temperature section plate bundle module 4 adopts 304 alloy steel products, adapts to 700 ℃ of left and right sides medium heat exchanges; Low-temperature zone plate bundle module 4 adopts and occurs low temperature dew point generation operating mode below 170-180 ℃, adopts anticorrosive materials such as titanium, recyclable more heats.
The foregoing description experimental results show that: positive role of the present invention is:
1, plate air preheater adopts corrugated cardboard sheet as heat transfer element, plate smooth surface and do not have flow dead, and it is convenient to blow ash, has solved equipment dust stratification problem.
2, the plate ripple has guiding, supporting role when strengthening heat transfer, and the superimposed back of plate forms exhaust gases passes and air duct respectively in the plate both sides and need not set up support member between other plate, and equipment is compact more, greatly reduces weight of equipment.
3, plate air preheater adopts pure countercurrent corrugated board, flue gas and air are pure adverse current in the plate both sides, the exhaust gases passes height is corresponding with the rerum natura of flue gas and air respectively with the air duct height, thereby the overall performance of equipment is more optimized when having improved heat transfer efficiency greatly.
4, the modular construction of plate Shu Caiyong can be exchanged between the module and combination arbitrarily fully, has solved manufacturing, the installation question of super large template bundle, has realized equipment enlarging.
Different with requirement for anticorrosion according to operating temperature, equipment can adopt segment design, and each section uses unlike material, satisfies the requirement of different operating modes, as using the heat resistance better material in the hot environment more than 700 ℃; Use anticorrosive materials such as titanium occurring the low-temperature dew point corrosion operating mode below 170-180 ℃, recyclable more heats, and the overall cost of equipment is effectively controlled.
5, between the plate, between the plate bundle module and flue gas all adopt welding or other form hermetically-sealed construction with air branch journey place, do not have leakage mutually between flue gas and the air, thoroughly solve the air-heater leakage problem.The equipment long-term operation is reliable, and running cost reduces greatly.
Claims (6)
1, a kind of plate air preheater, comprise: casing (1), heat-exchanging part and air and flue gas inlet/outlet bobbin carriage, it is characterized in that: the board-like heat-exchanging part that is provided with in the described casing (1), board-like heat-exchanging part is combined into plate tread assembly (7) by every layer of one deck at least by plate bundle module (4), plate tread assembly (7) upper end is connected with smoke inlet bobbin carriage (3) and air outlet slit bobbin carriage (2), plate tread assembly lower end is connected with air intake bobbin carriage (5) with exhanst gas outlet bobbin carriage (6), described plate bundle module (4) is made of corrugated cardboard sheet, and the air in the board-like plate bundle module (4) is the opposite airtight passage of direction with exhaust gases passes.
2, plate air preheater as claimed in claim 1, it is characterized in that: described corrugated cardboard sheet is shaped as hexagon, its upper and lower triangle distribution water conservancy diversion district (401,403) that is respectively equipped with, the centre is rectangle heat transfer zone (402), described rectangle heat transfer zone (402) is by heat transfer ripple (4401) and support ripple (4402) formation, and described heat transfer ripple (4401) is trapezoidal or S shape or triangle continuous wave pattern or interrupted ripple with supporting ripple (4402); Parallel airtight exhaust gases passes and air duct between the ripple that both sides, the superimposed back of corrugated cardboard sheet symmetry form; The height h of described exhaust gases passes, the height H of air duct, h ≠ H or h=H, the direction of exhaust gases passes and air duct is opposite, described distribution water conservancy diversion district (401,403) connects for holding or bridging type with middle part rectangle heat transfer zone (402), described upper and lower angular distribution water conservancy diversion district (401,403) is mutual reversed dip corrugated plating, and the same medium channel of described middle part rectangle heat transfer zone (402) is communicated with the same medium channel of going into, export triangle distribution water conservancy diversion district (401,403) of reversed dip corrugated plating respectively.
3, plate air preheater as claimed in claim 1 is characterized in that: described smoke inlet bobbin carriage (3) and air outlet slit bobbin carriage (2) and exhanst gas outlet bobbin carriage (6) and the upper and lower interlaced setting of air intake bobbin carriage (5).
4, plate air preheater as claimed in claim 1 is characterized in that: described corrugated cardboard sheet is superimposed affixed or be spliced into plate bundle module (4).
5, plate air preheater as claimed in claim 1, it is characterized in that: plate bundle module (4) two ends of described plate tread assembly are respectively equipped with triangle distribution water conservancy diversion district (401,403) and are mutual reversed dip corrugated plating, and described triangle distribution water conservancy diversion district ripple is continuous wave pattern or interrupted ripple; Described distribution water conservancy diversion district (401,403) is cusp or arc transition or is flat-top shape away from the triangular apex of rectangle heat transfer zone (2).
6, as claim 1 or 3 or 5 described plate air preheaters, it is characterized in that: be provided with in the described casing (1) by 1-6 laminate bundle module (4), interior different medium exhaust gases passes in triangle distribution water conservancy diversion district (401,403) that every laminate bundle module (4) is upper and lower and air duct are the medium channel of the inclination corrugated plating formation that is crisscross arranged of a last left side, bottom right; The medium channel that the inclination corrugated plating that triangle distribution water conservancy diversion district (401,403) the different medium exhaust gases passes of upper and lower plate bundle module (4) of facing mutually and air duct also are crisscross arranged for a last left side, bottom right constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100768746A CN100501241C (en) | 2005-06-20 | 2005-06-20 | Plate type air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100768746A CN100501241C (en) | 2005-06-20 | 2005-06-20 | Plate type air preheater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1884915A CN1884915A (en) | 2006-12-27 |
| CN100501241C true CN100501241C (en) | 2009-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100768746A Active CN100501241C (en) | 2005-06-20 | 2005-06-20 | Plate type air preheater |
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| CN (1) | CN100501241C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825410A (en) * | 2010-05-20 | 2010-09-08 | 甘肃蓝科石化高新装备股份有限公司 | Welding plate type heat exchanger |
| CN101968325A (en) * | 2010-05-27 | 2011-02-09 | 甘肃蓝科石化高新装备股份有限公司 | Shell-and-plate type heat exchanger |
| CN102230402B (en) * | 2011-05-25 | 2013-09-04 | 北京京海华诚能源科技有限公司 | Application of heat exchange plate bundle group in low-enthalpy and low-boiling point working medium power generation system |
| CN102434286B (en) * | 2011-09-26 | 2014-01-29 | 同济大学 | Efficient compact primary surface heat regenerator with low pressure loss |
| CN103776269B (en) * | 2014-01-17 | 2016-06-01 | 孔庆英 | A kind of kiln tail gas energy-saving and emission-reduction treatment facility |
| CN105674323B (en) * | 2014-11-18 | 2018-06-26 | 国家电网公司 | A kind of air preheater |
| CN108662927A (en) * | 2017-04-01 | 2018-10-16 | 天津华赛尔传热设备有限公司 | A kind of board-like gas-gas heat exchanger |
| CN108507363A (en) * | 2018-04-12 | 2018-09-07 | 深圳市凯盛科技工程有限公司 | A kind of glass furnace flue gas cool-down heat-exchanger rig |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783090A (en) * | 1971-02-19 | 1974-01-01 | Alfa Laval Ab | Heat exchanger plates |
| US4396058A (en) * | 1981-11-23 | 1983-08-02 | The Air Preheater Company | Heat transfer element assembly |
-
2005
- 2005-06-20 CN CNB2005100768746A patent/CN100501241C/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783090A (en) * | 1971-02-19 | 1974-01-01 | Alfa Laval Ab | Heat exchanger plates |
| US4396058A (en) * | 1981-11-23 | 1983-08-02 | The Air Preheater Company | Heat transfer element assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1884915A (en) | 2006-12-27 |
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Owner name: GANSU LANDTEK PETROCHEMICAL HIGH-TECH EQUIPMENT CO Free format text: FORMER OWNER: ZHANG YANFENG Effective date: 20091204 |
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Effective date of registration: 20091204 Address after: No. 349, Dunhuang Road, Qilihe District, Gansu, Lanzhou Province: 730050 Co-patentee after: Shanghai Lanbin Petrochemical Equipment Co., Ltd. Patentee after: Gansu blue Ke Petrochemical high and new equipment Limited by Share Ltd Co-patentee after: Lanzhou Lanya Petrochemical Equipment Engineering Co., Ltd. Address before: No. 349, Dunhuang Road, Qilihe District, Gansu, Lanzhou Province: 730050 Co-patentee before: Song Bingtang Patentee before: Zhang Yan Feng |