CN202032606U - Low-temperature protection device for metal heat exchange tubes of pre-heater - Google Patents
Low-temperature protection device for metal heat exchange tubes of pre-heater Download PDFInfo
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- CN202032606U CN202032606U CN2011200873156U CN201120087315U CN202032606U CN 202032606 U CN202032606 U CN 202032606U CN 2011200873156 U CN2011200873156 U CN 2011200873156U CN 201120087315 U CN201120087315 U CN 201120087315U CN 202032606 U CN202032606 U CN 202032606U
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- air
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- metal heat
- warm braw
- air input
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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 utility model discloses a low-temperature protection device for metal heat exchange tubes of a pre-heater. A plurality of metal heat exchange tubes are arranged between an air input collection box and an air bottom connecting box as well as an air output collection box and the air bottom connecting box at intervals in parallel and are communicated with the air input collection box and the air bottom connecting box, and the air bottom connecting box and the air output collection box respectively; the air input collection box and the air output collection box are provided with an air input port and an air output port respectively; a warm air collection box is sleeved on the top of the air input collection box, and the bottom on one side of the warm air collection box is provided with warm air nozzles towards the metal heat exchange tubes; a warm air port is formed on the top of the warm air collection box; and the air input port of the air input collection box passes through the warm air collection box to be connected with the air input collection box. By using the device, acid corrosion of a low-temperature tube bank of the pre-heater is effectively avoided, the heat recovery efficiency of the pre-heater is increased, the service life of the pre-heater is prolonged, and the energy consumption is reduced.
Description
Technical field
The utility model relates to a kind of low-temperature protection device of preheater metal heat exchanger tube.
Background technology
The fume afterheat that the preheater utilization is reclaimed improves the combustion-supporting gas temperature that enters all kinds of stoves or boiler, and its thermal source is collected in the flue gas of stove or boiler exhaust gas flue, by flue gas and other combustion-supporting gas heat exchange, reduce exhaust gas temperature, improve the combustion-supporting gas temperature, reduce energy consumption.As shown in Figure 1, usually the structure of preheater comprises that the air bottom connects case 1, air input set case 2, air output collection case 3 and number of metal heat exchanger tube 4, air input set case 2 and air output collection case 3 are arranged side by side and are respectively equipped with air input interface 21 and air output interface 31, air bottom connects case and is positioned at air input set case 2 and air output collection case 3 bottoms, number of metal heat exchanger tube 4 parallel interval be located at air input set case 2 connect between the case 1 with the air bottom and air output collection case 3 and air bottom connect between the case 1 and interconnect; Combustion-supporting gas enters after number of metal heat exchanger tube 4 to air bottom connects case 1 from air input set case 2, the air bottom connects the combustion-supporting gas of case 1 and export collection case 3 to air behind number of metal heat exchanger tube 4, and the combustion-supporting gas of air output collection case 3 enters stove or boiler participates in burning; The flue gas of exit flue enters from the preheater flue, at first with number of metal heat exchanger tube 4 contact heat-exchangings that air output collection case 3 is connected after number of metal heat exchanger tube 4 contact heat-exchangings that are connected with air input set case 2 again, therefore number of metal heat exchanger tube 4 temperature of air output collection case 3 connections are higher, be called high temperature pipe group 41, and number of metal heat exchanger tube 4 temperature that air input set case 2 connects are lower, are called cryotronl group 42; In the actual moving process of preheater, there is the property composition of certain acid corrosion in the flue gas, when temperature was lower than acid dew-point temperature, the corrosive deposit in the flue gas is attached to metal heat exchanger tube surface to be caused damaging; Usually the temperature of high temperature pipe group 41 is higher than acid dew-point temperature, do not exist flue gas cold end corrosion, and the situation of acid dew-point temperature can appear being lower than in the temperature of cryotronl group 42, cause 42 corrosion of cryotronl group damaged, combustion-supporting gas flows into flue and increases flue gas loss, has influenced the service life of preheater.Be generally and avoid preheater cryotronl group 42 temperature to be lower than acid dew-point temperature and cold end corrosion occurs, except low-temperature zone adopts more corrosion resistant material, adopt control preheater exhanst gas outlet temperature far above acid dew-point temperature mostly, or enter preheater again after utilizing external heat source or hot air circulation mode to improve air themperature earlier, this just makes a large amount of fume afterheats do not reduced the heat exchange efficiency of preheater by effective recycling.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of low-temperature protection device of preheater metal heat exchanger tube, utilizes this device effectively to avoid the acid corrosion of preheater cryotronl group, the heat recovery efficiency and the service life of having improved preheater, has reduced energy consumption.
For solving the problems of the technologies described above; the low-temperature protection device of the utility model preheater metal heat exchanger tube comprises that the air bottom connects case; air input set case; air output collection case and number of metal heat exchanger tube; described number of metal heat exchanger tube parallel interval is located at described air input set case and air output collection case and is connected between the case with the air bottom and be communicated with air input set case and air bottom respectively and connect case and air bottom and connect case and air and export and collect case; described air input set case and air output collection case are respectively equipped with air input interface and air output interface; this device also comprises warm braw collection case and warm braw interface; described warm braw collection housing-case is located at described air input set box top and warm braw collection case one side bottom has the warm braw spout towards described number of metal heat exchanger tube; described warm braw interface is located at described warm braw collection box top, and the air input interface of described air input set case passes described warm braw collection case and links to each other with air input set case.
For improving in the warm braw collection case warm braw to the thermal effect that adds of metal heat exchanger tube, above-mentioned warm braw spout comprises some sleeve pipes, described some sleeve pipe parallel interval are located at described warm braw collection case bottom and are inserted in described air input set case and connect number of metal heat exchanger tube outer wall between the case bottom air, and described cover external diameter of pipe is less than the spacing of adjacent metal heat exchanger tube.
Because the low-temperature protection device of the utility model preheater metal heat exchanger tube has adopted technique scheme; be that some metal heat exchanger tube parallel interval are located at air input set case and air output collection case and are connected between the case with the air bottom and be communicated with air input set case and air bottom respectively and connect case and air bottom and connect case and air and export and collect case; air input set case and air output collection case are respectively equipped with air input interface and air output interface; warm braw collection housing-case is located at air input set box top and warm braw collection case one side bottom has the warm braw spout towards the number of metal heat exchanger tube; the warm braw interface is located at warm braw collection box top, and the air input interface of air input set case passes warm braw collection case and links to each other with air input set case.Utilize this device effectively to avoid the acid corrosion of preheater cryotronl group, the heat recovery efficiency and the service life of having improved preheater, reduced energy consumption.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and embodiments:
Fig. 1 is the structural representation of preheater,
Fig. 2 is the structural representation of the low-temperature protection device of the utility model preheater metal heat exchanger tube,
Fig. 3 comprises the structural representation of some sleeve pipes for this device.
The specific embodiment
As shown in Figure 2; the low-temperature protection device of the utility model preheater metal heat exchanger tube comprises that the air bottom connects case 1; air input set case 2; air output collection case 3 and number of metal heat exchanger tube 4; described number of metal heat exchanger tube 4 parallel interval are located at described air input set case 2 and air output collection case 3 and are connected between the case 1 with the air bottom and be communicated with air input set case 2 and air bottom respectively and connect case 1 and air bottom and connect case 1 and collect case 3 with air output; described air input set case 2 and air output collection case 3 are respectively equipped with air input interface 21 and air output interface 31; this device also comprises warm braw collection case 5 and warm braw interface 6; described warm braw collection case 5 is sheathed on described air input set case 2 tops and warm braw collection case 5 one side bottoms have warm braw spout 7 towards described number of metal heat exchanger tube 4; described warm braw interface 6 is located at described warm braw collection case 5 tops, and the air input interface 21 of described air input set case 2 passes described warm braw collection case 5 and links to each other with air input set case 2.
As shown in Figure 3, for improving in the warm braw collection case warm braw to the thermal effect that adds of metal heat exchanger tube, above-mentioned warm braw spout comprises some sleeve pipes 8, described some sleeve pipes 8 parallel interval are located at described warm braw collection case 5 bottoms and are inserted in described air input set case 2 and air bottom connects number of metal heat exchanger tube 4 outer walls between the case 1, and described sleeve pipe 8 external diameters are less than the spacing of adjacent metal heat exchanger tube.
This device increases warm braw interface and warm braw collection case on traditional preheater architecture basics, the warm braw interface connects the covering flue gas, and through the heat-transfer surface of the warm braw spout of warm braw collection case covering flue gas that temperature is higher winding-up to some metal heat exchanger tubes, or evenly jet to the heat-transfer surface of the number of metal heat exchanger tube of cryotronl group through some sleeve pipes covering flue gas that temperature is higher, improved the tube wall temperature of cryotronl group, avoid it to run on the following and cold end corrosion that causes of acid dew-point temperature, improved the service life and the heat exchange efficiency of preheater.The air-flow that is arranged so that the covering flue gas of some sleeve pipes is more evenly distributed, and heats more directly, obtains the good thermal effect that adds.This device can reduce the exhanst gas outlet temperature of preheater, reduces about 50-100 ℃ than the exhaust gas temperature of traditional preheater, avoids the acid corrosion of cryotronl group, has effectively improved the heat exchange efficiency of preheater.
Claims (2)
1. the low-temperature protection device of a preheater metal heat exchanger tube; comprise that the air bottom connects case; air input set case; air output collection case and number of metal heat exchanger tube; described number of metal heat exchanger tube parallel interval is located at described air input set case and air output collection case and is connected between the case with the air bottom and be communicated with air input set case and air bottom respectively and connect case and air bottom and connect case and air and export and collect case; described air input set case and air output collection case are respectively equipped with air input interface and air output interface; it is characterized in that: also comprise warm braw collection case and warm braw interface; described warm braw collection housing-case is located at described air input set box top and warm braw collection case one side bottom has the warm braw spout towards described number of metal heat exchanger tube; described warm braw interface is located at described warm braw collection box top, and the air input interface of described air input set case passes described warm braw collection case and links to each other with air input set case.
2. the low-temperature protection device of preheater metal heat exchanger tube according to claim 1; it is characterized in that: described warm braw spout comprises some sleeve pipes; described some sleeve pipe parallel interval are located at described warm braw collection case bottom and are inserted in described air input set case and connect number of metal heat exchanger tube outer wall between the case bottom air, and described cover external diameter of pipe is less than the spacing of adjacent metal heat exchanger tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200873156U CN202032606U (en) | 2011-03-29 | 2011-03-29 | Low-temperature protection device for metal heat exchange tubes of pre-heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200873156U CN202032606U (en) | 2011-03-29 | 2011-03-29 | Low-temperature protection device for metal heat exchange tubes of pre-heater |
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| Publication Number | Publication Date |
|---|---|
| CN202032606U true CN202032606U (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200873156U Expired - Lifetime CN202032606U (en) | 2011-03-29 | 2011-03-29 | Low-temperature protection device for metal heat exchange tubes of pre-heater |
Country Status (1)
| Country | Link |
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| CN (1) | CN202032606U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230636A (en) * | 2011-03-29 | 2011-11-02 | 上海宝钢工业检测公司 | Low-temperature protective device of preheater metal heat-exchange tube |
-
2011
- 2011-03-29 CN CN2011200873156U patent/CN202032606U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230636A (en) * | 2011-03-29 | 2011-11-02 | 上海宝钢工业检测公司 | Low-temperature protective device of preheater metal heat-exchange tube |
| CN102230636B (en) * | 2011-03-29 | 2015-09-30 | 宝钢工业炉工程技术有限公司 | The low-temperature protection device of preheater metallic heat exchanging tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BAOSTEEL INDUSTRIAL FURNACE ENGINEERING TECHNOLOGY Free format text: FORMER OWNER: SHANGHAI BAOSTEEL INDUSTRY INSPECTION CORP. Effective date: 20130227 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130227 Address after: 201900 room 503-C, room 1, building 1508, Mudanjiang Road, Shanghai, Baoshan District, 5 Patentee after: Baosteel Industrial Furnace Engineering Technology Co., Ltd. Address before: 201900 Shanghai city Baoshan District Meipu Road No. 335 Patentee before: Shanghai Baosteel Industry Inspection Corp. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20111109 Effective date of abandoning: 20150930 |
|
| RGAV | Abandon patent right to avoid regrant |