CN208296622U - High temperature heat furnace with stage differential style composite junction epitaxial heat exchanger tube - Google Patents
High temperature heat furnace with stage differential style composite junction epitaxial heat exchanger tube Download PDFInfo
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- CN208296622U CN208296622U CN201821406248.8U CN201821406248U CN208296622U CN 208296622 U CN208296622 U CN 208296622U CN 201821406248 U CN201821406248 U CN 201821406248U CN 208296622 U CN208296622 U CN 208296622U
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- heat furnace
- furnace
- exchanger tube
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Abstract
The utility model discloses a kind of high temperature heat furnaces with stage differential style composite junction epitaxial heat exchanger tube, including level-one heat furnace, second level heat furnace and three-level heat furnace；Wherein level-one heat furnace top is connect with high-temperature flue gas admission line, and level-one heat furnace lower part is connected to second level heat furnace lower part, and second level heat furnace top is connected to three-level heat furnace top, and three-level heat furnace upper and lower part is all connect with flue gas outlet pipe；More heat exchanger tubes being vertically arranged are both provided in every grade of heat furnace, wherein composite junction epitaxial is fully coated on the heat exchanger tube length direction in level-one heat furnace, heat exchanger tube lower part in second level heat furnace is coated with composite junction epitaxial, and the heat exchanger tube in three-level heat furnace is not coated by composite junction epitaxial.High temperature heat furnace according to the present utility model is designed the heat exchanger tube in every grade of heat furnace using different coatings according to the temperature of flue gas, flow velocity and particle concentration, optimizes balance so that obtaining between the service life and heat exchange efficiency of heat exchanger tube.
Description
Technical field
The utility model relates to a kind of high temperature heat furnaces, and in particular to the high temperature with stage differential style composite junction epitaxial heat exchanger tube
Heat furnace.
Background technique
In industries such as chemical industry, metallurgy, power generations, it is common to use coal-fired, combustion gas or oil burning boiler, the high-temperature flue gas generated are logical
Often UTILIZATION OF VESIDUAL HEAT IN is carried out using high temperature heat furnace.Be mingled with subparticle in flue gas, in subparticle containing sodium, potassium, calcium chloride,
The metal ions such as nickel and vanadium, these particles have significant erosion, abrasion and bonding effect to metallic heat exchanging tube, in boiler tube appearance
Face is accumulated, and sintering forms superficial dust fouling, reduces the boiler tube thermal efficiency, while easily forming localized hyperthermia, booster etc. occurs
Serious accident has seriously affected the safety and economy of boiler operatiopn.
Utility model content
The purpose of this utility model is the safety and economy to improve boiler operatiopn, fundamentally solves high temperature heat furnace
The problems such as high temperature erosion, dust stratification and Slagging, changes heat exchange environment in the furnace of high temperature heat furnace from source and starts with, provides one
Kind has the high temperature heat furnace of stage differential style composite junction epitaxial heat exchanger tube.
High temperature heat furnace according to the present utility model with stage differential style composite junction epitaxial heat exchanger tube, including level-one take heat
Furnace, second level heat furnace and three-level heat furnace；Wherein level-one heat furnace top is connect with high-temperature flue gas admission line, level-one heat furnace
Lower part is connected to second level heat furnace lower part, and second level heat furnace top is connected to three-level heat furnace top, three-level heat furnace top and
Lower part is all connect with flue gas outlet pipe, and adjusting is provided on the pipeline that three-level heat furnace top is connect with flue gas outlet pipe
Valve；More heat exchanger tubes being vertically arranged are both provided in every grade of heat furnace, wherein the heat exchanger tube length direction in level-one heat furnace
On be fully coated with composite junction epitaxial, the heat exchanger tube lower part in second level heat furnace is coated with composite junction epitaxial, in three-level heat furnace
Heat exchanger tube be not coated by composite junction epitaxial.
Under preferable case, the length that the heat exchanger tube lower part in second level heat furnace is coated with composite junction epitaxial is heat exchanger tube overall length
1/4-1/2.
Under preferable case, more heat exchanger tubes in every grade of heat furnace are connected in end to end series system.
Under preferable case, the heat exchanger tube in adjacent heat furnace is connected in a series arrangement.
Under preferable case, the cross section of every grade of heat furnace is circle.
High temperature heat furnace according to the present utility model, according to the temperature of flue gas, flow velocity and particle concentration to every grade of heat furnace
In heat exchanger tube designed using different coating so that obtained between the service life and heat exchange efficiency of heat exchanger tube optimize it is flat
Weighing apparatus.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of high temperature heat furnace according to the present utility model.
Fig. 2 is the schematic cross-section of the level-one heat furnace of high temperature heat furnace according to the present utility model.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.Under it will be appreciated by those skilled in the art that
The embodiment of face description is only the exemplary illustration to the utility model, makes any restrictions not for it.
Referring to Fig. 1, the high temperature heat furnace according to the present utility model with stage differential style composite junction epitaxial heat exchanger tube, including one
Grade heat furnace 1, second level heat furnace 2 and three-level heat furnace 3.Wherein 1 top of level-one heat furnace and high-temperature flue gas admission line 4 connect
It connecing, 1 lower part of level-one heat furnace is connected to 2 lower part of second level heat furnace, and 2 top of second level heat furnace is connected to 3 top of three-level heat furnace,
3 top of three-level heat furnace connect by regulating valve 7 with flue gas outlet pipe 5,3 lower part of three-level heat furnace pass through bypass duct 6 and
Flue gas outlet pipe 5 is connected to.
More metal material heat exchanger tubes being vertically arranged are both provided in every grade of heat furnace, the length of heat exchanger tube is generally 6-
10m.Composite junction epitaxial is wherein fully coated on 11 length direction of heat exchanger tube in level-one heat furnace 1, in second level heat furnace 2
21 lower part of heat exchanger tube is coated with composite junction epitaxial, and the heat exchanger tube 31 in three-level heat furnace 3 is not coated by composite junction epitaxial.Preferable case
Under, the length that 21 lower part of heat exchanger tube in second level heat furnace 2 is coated with composite junction epitaxial is the 1/4-1/2 of 21 overall length of heat exchanger tube.
Composite junction epitaxial is formed after spray sintering by ceramic material, rare earth element etc., has Anti-erosion and scale-preventing performance.
It wherein can be using the SEC-B of Beijing Xi Ke energy conservation and environmental protection Science and Technology Ltd. production on the heat exchanger tube 11 in level-one heat furnace 1
Compound crystal membrane material, the heat exchanger tube 21 in second level heat furnace 2 can be raw using Beijing Xi Ke energy conservation and environmental protection Science and Technology Ltd.
Produce SEC-C compound crystal membrane material.
Wherein, more heat exchanger tubes in every grade of heat furnace are connected in end to end series system.In adjacent heat furnace
Heat exchanger tube is connected in a series arrangement.
Referring to fig. 2, the cross section of level-one heat furnace 1 is circle, and more heat exchanger tubes 11 are arranged in a manner of in spacer ring
In level-one heat furnace, it is preferably 1/2 that more 11 total cross-sectional areas of heat exchanger tube, which account for the cross-sectional area of level-one heat furnace 1,.Second level and
Three-level heat furnace structure and level-one heat furnace structure are essentially identical.
When the high temperature heat furnace operation of the utility model, high-temperature flue gas is entered by admission line 4, cryogenic media (such as water)
It flows into from the heat exchanger tube 31 in three-level heat furnace 3, exchanges heat with high-temperature flue gas reverse flow.High temperature, high speed and particle contain
It measures high flue gas first to contact with the heat exchanger tube 11 in level-one heat furnace 1, enters secondary heat exchange furnace from bottom with after depositing dust through exchanging heat
2, at this point, flow velocity, temperature and fraction of particle a decreased magnitude, then contacted with the heat exchanger tube 21 in second level heat furnace 2, it arrives
When up to the top of second level heat furnace 2, corrosion function weakens significantly.To, by 21 top of heat exchanger tube in second level heat furnace 2 and
Heat exchanger tube 31 in three-level heat furnace 3 is not coated by composite junction epitaxial, then can reduce cost.In addition, can also according to the temperature of flue gas,
The heat exchanger tube 31 for selecting flue gas whether to pass through in three-level heat furnace 3 by the opening and closing of regulating valve 7 exchanges heat.
Illustrated above is only the preferred embodiment of the utility model, all impartial changes done according to the utility model claims
Change or modify, the covering scope of the utility model claims should all be belonged to.
Claims (5)
1. a kind of high temperature heat furnace with stage differential style composite junction epitaxial heat exchanger tube, which is characterized in that including level-one heat furnace, two
Grade heat furnace and three-level heat furnace；Wherein level-one heat furnace top is connect with high-temperature flue gas admission line, level-one heat furnace lower part
It is connected to second level heat furnace lower part, second level heat furnace top is connected to three-level heat furnace top, three-level heat furnace upper and lower part
It is all connect with flue gas outlet pipe, is provided with regulating valve on the pipeline that three-level heat furnace top is connect with flue gas outlet pipe；
More heat exchanger tubes being vertically arranged are both provided in every grade of heat furnace, it is wherein complete on the heat exchanger tube length direction in level-one heat furnace
Portion is coated with composite junction epitaxial, and the heat exchanger tube lower part in second level heat furnace is coated with composite junction epitaxial, changing in three-level heat furnace
Heat pipe is not coated by composite junction epitaxial.
2. high temperature heat furnace according to claim 1, which is characterized in that the heat exchanger tube lower part in second level heat furnace is coated with
The length of composite junction epitaxial is the 1/4-1/2 of heat exchanger tube overall length.
3. high temperature heat furnace according to claim 1, which is characterized in that more heat exchanger tubes in every grade of heat furnace are in head and the tail
Connected series system connection.
4. high temperature heat furnace according to claim 1, which is characterized in that the heat exchanger tube in adjacent heat furnace is in a series arrangement
Connection.
5. high temperature heat furnace according to claim 1, which is characterized in that the cross section of every grade of heat furnace is circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821406248.8U CN208296622U (en) | 2018-08-30 | 2018-08-30 | High temperature heat furnace with stage differential style composite junction epitaxial heat exchanger tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821406248.8U CN208296622U (en) | 2018-08-30 | 2018-08-30 | High temperature heat furnace with stage differential style composite junction epitaxial heat exchanger tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208296622U true CN208296622U (en) | 2018-12-28 |
Family
ID=64700310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821406248.8U Active CN208296622U (en) | 2018-08-30 | 2018-08-30 | High temperature heat furnace with stage differential style composite junction epitaxial heat exchanger tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208296622U (en) |
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2018
- 2018-08-30 CN CN201821406248.8U patent/CN208296622U/en active Active
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