CN208108153U - A kind of corrosion-resistant GGH flue gas heat-exchange unit - Google Patents
A kind of corrosion-resistant GGH flue gas heat-exchange unit Download PDFInfo
- Publication number
- CN208108153U CN208108153U CN201820323921.5U CN201820323921U CN208108153U CN 208108153 U CN208108153 U CN 208108153U CN 201820323921 U CN201820323921 U CN 201820323921U CN 208108153 U CN208108153 U CN 208108153U
- Authority
- CN
- China
- Prior art keywords
- heat
- porous plate
- pipe
- transfer pipe
- denitration
- 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.)
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000003546 flue gas Substances 0.000 title claims abstract description 28
- 230000007797 corrosion Effects 0.000 title claims abstract description 21
- 238000005260 corrosion Methods 0.000 title claims abstract description 21
- 239000000779 smoke Substances 0.000 claims abstract description 20
- 210000003298 dental enamel Anatomy 0.000 claims abstract description 17
- 239000003517 fume Substances 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A kind of corrosion-resistant GGH flue gas heat-exchange unit provided by the utility model, including smoke outlet tube, left porous plate, right porous plate before fume pipe, one group of heat-transfer pipe, out of stock preceding smoke inlet pipe, denitration after denitration；Smoke outlet tube is relatively arranged on after denitration on the left side wall and right side wall of fume pipe before the out of stock preceding smoke inlet pipe, denitration；The inner and outer wall of the heat-transfer pipe is coated with enamel anticorrosion layer respectively, and does not plate enamel anticorrosion layer in the inner and outer wall end certain distance of heat-transfer pipe；The left end of the heat-transfer pipe is welded on left porous plate and is aligned with hole, and the right end of the heat-transfer pipe is welded on right porous plate and is aligned with hole, and weld surface is equipped with corrosion-inhibiting coating.The GGH flue gas heat-exchange unit simple in structure, good airproof performance, air leakage coefficient is very low, using multiple-anticorrosion measure, long service life.
Description
Technical field
The utility model belongs to field of electrical equipment, in particular to a kind of corrosion-resistant GGH flue gas heat-exchange unit.
Background technique
GGH flue gas heat-exchange unit is widely used in Thermal Power Generation Industry and waste incineration and generating electricity industry, is generally used for low in SCR system
Warm flue gas heats up again, heats the low-temperature flue gas before denitration with the high-temperature flue gas after denitration, the low-temperature flue gas temperature before making denitration
Reach denitration requirement.Device structure form generally uses light pipe, and cold smoke is made leave with rage in pipe, it is out of stock after hot fume walk outside pipe.
Since the flue-gas temperature before and after denitration is all lower, there is stronger corrosivity, and dew point corrosion temperature is higher, it is some
Producer's exchange heat pipe carries out plating enamel anticorrosion.But enamel pipe there is a problem of in the connection with tube sheet it is very big；If enamel
Pipe and tube sheet use silicone rubber seal, there are silicon rubber aging, the problem of seal failure；If when welding, can break using welding
Bad enamel forms new hot spot.Traditional GGH flue gas heat-exchange unit is easy to happen corrosion, and service life is not grown.
Utility model content
Technical problem：In order to solve the defects of prior art, the utility model provides a kind of corrosion-resistant GGH flue gas heat exchange
Device.
Technical solution：A kind of corrosion-resistant GGH flue gas heat-exchange unit provided by the utility model, including fume pipe, one after denitration
Smoke outlet tube, left porous plate, right porous plate before group heat-transfer pipe, out of stock preceding smoke inlet pipe, denitration；The out of stock preceding flue gas enters
Mouthful pipe, smoke outlet tube is relatively arranged on after denitration on the left side wall and right side wall of fume pipe before denitration；The heat-transfer pipe it is interior
Wall and outer wall are coated with enamel anticorrosion layer respectively, and do not plate enamel anticorrosion layer in the inner and outer wall end certain distance of heat-transfer pipe；
The left end of the heat-transfer pipe is welded on left porous plate and is aligned with hole, the right end of the heat-transfer pipe be welded on right porous plate and
It is aligned with hole, and weld surface is equipped with corrosion-inhibiting coating；End in the pipe of the heat-transfer pipe is equipped with silicon rubber inner sleeve, the silicon
It is outer and be equipped with and cooperate with heat transfer pipe outer wall and left porous plate or right porous plate surface shape that heat-transfer pipe is stretched out in rubber inner sleeve one end
Edge；The left porous plate, right porous plate are externally provided with stainless steel plate；The left porous plate is fixed on out of stock by expansion joint
In preceding smoke inlet pipe, the right porous plate is welded in front of denitration in smoke outlet tube.
As an improvement, the inner and outer wall end 10-20mm distance of the heat-transfer pipe is interior not to plate enamel anticorrosion layer.
Beneficial effect：GGH flue gas heat-exchange unit simple in structure, good airproof performance provided by the utility model, air leakage coefficient is very
It is low, using multiple-anticorrosion measure, long service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the corrosion-resistant GGH flue gas heat-exchange unit of the utility model.
Fig. 2 is the partial enlarged view one of the corrosion-resistant GGH flue gas heat-exchange unit of the utility model.
Fig. 3 is the partial enlarged view two of the corrosion-resistant GGH flue gas heat-exchange unit of the utility model.
Specific embodiment
GGH flue gas heat-exchange unit corrosion-resistant to the utility model further illustrates below.
Corrosion-resistant GGH flue gas heat-exchange unit is shown in 1, one group of heat-transfer pipe 2 of fume pipe, out of stock preceding flue gas after Fig. 1 to 3, including denitration
Smoke outlet tube 4, left porous plate 5, right porous plate 6 before inlet tube 3, denitration；Flue gas goes out before out of stock preceding smoke inlet pipe 3, denitration
Mouthful pipe 4 is relatively arranged on after denitration on the left side wall and right side wall of fume pipe 1；The inner and outer wall of heat-transfer pipe 2 is coated with respectively to be warded off
Porcelain erosion resistant coating, and enamel anticorrosion layer is not plated in the inner and outer wall end certain distance of heat-transfer pipe 2, for example, the inner wall of heat-transfer pipe 2
The purpose of the present invention may be implemented with enamel anticorrosion layer is not plated in outer wall end 10-20mm distance；It welds the left end of heat-transfer pipe 2
It is aligned on left porous plate 5 and with hole, the right end of heat-transfer pipe 2 is welded on right porous plate 6 and is aligned with hole, and weld surface
Equipped with corrosion-inhibiting coating；End in the pipe of heat-transfer pipe 2 is equipped with silicon rubber inner sleeve 9, and 9 one end of silicon rubber inner sleeve is stretched out outside heat-transfer pipe 2
And it is equipped with the edge 7 cooperated with 2 outer wall of heat-transfer pipe and left porous plate 5 or 6 surface shape of right porous plate；Left porous plate 5, the right side are more
Orifice plate 6 is externally provided with stainless steel plate 8；Left porous plate 5 is fixed in out of stock preceding smoke inlet pipe 3 by expansion joint 9, right porous plate
6 are welded in front of denitration in smoke outlet tube 4.
The device reaches corrosion resistant purpose using multiple form：
(1) left porous plate is fixed with out of stock preceding smoke inlet pipe, and smoke outlet tube is using expansion before right porous plate and denitration
Section connection, to make left porous plate and heat-transfer pipe that can solve the problems, such as that heat-transfer pipe and tube sheet thermally expand with bulk expansion.
(2) heat-transfer pipe pipe is inside and outside plates enamel anticorrosion, and the both ends of heat-transfer pipe respectively stay certain distance not plate enamel, convenient more with a left side
Orifice plate and the welding of right porous plate；Using welded seal, permanent seal can be played the role of, it will not extension at any time and aging
Failure；
(3) it after heat-transfer pipe and left porous plate, right porous plate have welded, polishes commissure, then anticorrosion with painting applies
Layer；
(4) it using the position for not being plated to enamel at silicon rubber inner sleeve protection nozzle and tube sheet, avoids the outer flue gas of pipe and exists
Condensation causes the corrosion outside pipe at this；
(5) setting stainless steel plate limits, and silicon rubber inner sleeve is protected not loosen, while playing to the more of heat-transfer pipe and weld seam
It protects again.
Claims (2)
1. a kind of corrosion-resistant GGH flue gas heat-exchange unit, it is characterised in that：Including fume pipe after denitration (1), one group of heat-transfer pipe (2), take off
Smoke outlet tube (4), left porous plate (5), right porous plate (6) before pin preceding smoke inlet pipe (3), denitration；The out of stock preceding flue gas
Smoke outlet tube (4) is relatively arranged on after denitration on the left side wall and right side wall of fume pipe (1) before inlet tube (3), denitration；It is described
The inner and outer wall of heat-transfer pipe (2) is coated with enamel anticorrosion layer respectively, and in the inner and outer wall end certain distance of heat-transfer pipe (2)
Enamel anticorrosion layer is not plated；The left end of the heat-transfer pipe (2) is welded on left porous plate (5) and is aligned with hole, the heat-transfer pipe (2)
Right end be welded on right porous plate (6) and be aligned with hole, and weld surface be equipped with corrosion-inhibiting coating；The heat-transfer pipe (2)
End in pipe is equipped with silicon rubber inner sleeve (9), and described silicon rubber inner sleeve (9) one end is stretched out heat-transfer pipe (2) outside and is equipped with and heat transfer
Manage the edge (7) of (2) outer wall and left porous plate (5) or the cooperation of right porous plate (6) surface shape；The left porous plate (5), the right side
Porous plate (6) is externally provided with stainless steel plate (8)；The left porous plate (5) is fixed on out of stock preceding flue gas by expansion joint (10) and is entered
In mouth pipe (3), smoke outlet tube (4) is interior before the right porous plate (6) is welded in denitration.
2. a kind of corrosion-resistant GGH flue gas heat-exchange unit according to claim 1, it is characterised in that：The heat-transfer pipe (2) it is interior
Enamel anticorrosion layer is not plated in wall and outer wall end 10-20mm distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820323921.5U CN208108153U (en) | 2018-03-09 | 2018-03-09 | A kind of corrosion-resistant GGH flue gas heat-exchange unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820323921.5U CN208108153U (en) | 2018-03-09 | 2018-03-09 | A kind of corrosion-resistant GGH flue gas heat-exchange unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208108153U true CN208108153U (en) | 2018-11-16 |
Family
ID=64126950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820323921.5U Active CN208108153U (en) | 2018-03-09 | 2018-03-09 | A kind of corrosion-resistant GGH flue gas heat-exchange unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208108153U (en) |
-
2018
- 2018-03-09 CN CN201820323921.5U patent/CN208108153U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210000 No. 749, Binjiang Road, Jiangning Economic Development Zone, Nanjing, Jiangsu Patentee after: Nanjing Huadian energy saving and environmental protection Co.,Ltd. Address before: 210000 No. 749, Binjiang Road, Jiangning Economic Development Zone, Nanjing, Jiangsu Patentee before: NANJING HUADIAN ENERGY-SAVING AND ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |