CN202501441U - High flow velocity flue gas waste heat recovery device - Google Patents
High flow velocity flue gas waste heat recovery device Download PDFInfo
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- CN202501441U CN202501441U CN2011203561103U CN201120356110U CN202501441U CN 202501441 U CN202501441 U CN 202501441U CN 2011203561103 U CN2011203561103 U CN 2011203561103U CN 201120356110 U CN201120356110 U CN 201120356110U CN 202501441 U CN202501441 U CN 202501441U
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- flue gas
- waste heat
- heat
- heat recovery
- high flow
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Abstract
The utility model discloses a high flow velocity flue gas waste heat recovery device and belongs to the technical field of energy saving devices, aiming at solving ash deposition, dew point corrosion and housing flue gas leakage problems of conventional flue gas waste heat recovery devices. The high flow velocity flue gas waste heat recovery device comprises a cylinder-type housing, a heat extracting element, a high-temperature flue gas inlet and a flue gas outlet. The device eliminates a leeside of a heat extracting pipe and allows flue gas to pass through the device in high flow velocity and no ash deposition can be caused. The cylinder-type housing is high in strength and does not leak the flue gas. An coal economizer is used for generating low-pressure steam and no dew point corrosion can be caused. The high flow velocity flue gas waste heat recovery device can be applied to equipment needing high-temperature flue gas recovery.
Description
Technical field
The utility model belongs to the energy-saving equipment technical field, particularly a kind of high flow rate flue gas waste heat recovery equipment.
Background technology
Existing catalytic cracking unit high-temperature flue gas waste heat recovery apparatus generally is box waste heat boiler, and its device housings is a body structure, some heat removing tubes of set inside, and heat removing tube upper end, lower end are connected with drum.High-temperature flue gas flows through casing, with the heat removing tube heat-shift temperature is reduced, and hot water circulates between heat removing tube and drum, can produce low-pressure steam or middle pressure steam.The waste heat recovery that box waste heat boiler applied catalysis cracking etc. contains the solid particle regenerated flue gas has following deficiency: 1, the flow velocity of high-temperature flue gas in casing is low; The solid particle that carries in the flue gas in hot water comb (lee face) outer wall deposition, makes heat transfer efficiency decline (for this reason the ash disposal facility need be set) easily.2, the flue gas heat transfer coefficient is lower.3, volume is big, and floor space is big, invests higher.4, casing is large-scale planar structure, and vibrations and distortion cause insulated lining to come off, damage inevitably, and casing damages fume leakage, contaminated environment easily.
A kind of in addition " drum formula " waste heat boiler is in a horizontal cylinder type pressure vessel, to pass some pipes, and high-temperature flue gas flows through from the drum pipe, with hot water heat exchange in the drum housing.Drum housing top is provided with drum, with several pipes drum and drum is coupled together again, and hot water circulates between drum and drum, produces low-pressure steam or middle pressure steam.Drum formula waste heat boiler is not enough: 1, owing to the reason of structure aspects (cylindrical pressure vessel is a pressure vessel, volume and diameter and to pass number of tubes limited), generally only be applied in midget plant, generally be used to take place low-pressure steam.2, the thermal efficiency is lower, and 3, the bobbin carriage flue gas flow rate at drum two ends is low, the solid particle that carries in the flue gas deposits easily; Two ends bobbin carriage insulated lining comes off easily, damages, and the two ends bobbin carriage damages smoke spillage, contaminated environment easily.
Summary of the invention
The purpose of the utility model is that existing equipment is improved, the waste heat recovery that contains the solid particle regenerated flue gas for catalytic cracking etc. provide a kind of housing not fume leakage, " non-maintaining " type energy-saving equipment of dew point corrosion does not take place in deposition solid particle, heat-obtaining element.
The utility model solves the technical scheme that its technical problem adopted: comprise apparatus casing, heat-obtaining element, high-temperature flue gas import and exhanst gas outlet.Apparatus casing adopts cylindrical structure, and the heat-obtaining element vertically is provided with along cylinder type shell, and gas approach or outlet are provided with guide shell.
Described circular cylindrical shell flue gas flow rate 10～40m/s, the housing inboard is provided with insulating and wearing-resistant lining or (this moment with outer insulation) is not set, and the high-temperature flue gas import is in the equipment bottom or in its upper side, the vertical layout of equipment or with horizontal layout.
Described heat-obtaining element is intubate (or claim sleeve pipe) structure or U-shaped structure or a serpentine configuration, pipe arranged outside fin (or claiming fin) or ailhead or be not provided with.
Described heat-obtaining element can be single heat removing tube, or the heat-obtaining unit that form with the bobbin carriage set of many heat removing tubes, or with the heat-obtaining unit of conjuncted drum.
Described heat-obtaining element can be installed or install or install from the side inserted mode from the housing bottom inserted mode that makes progress from the downward inserted mode of case top.
Described waste heat recovery apparatus gas approach, outlet can be in the direct opening syndeton of apparatus casing, or in hull outside the guide shell syndeton be set.
500 ℃ flue gas gets into this waste heat recovery apparatus from import, and through shell side, with the heat exchange of heat-obtaining element, temperature is reduced to 180～200 ℃ and leaves from outlet with 20～40m/s flow velocity.Get into deaerated water from the import of heat-obtaining element, the vaporization through the heat exchange rear section, steam water interface leaves from outlet; Or, after heat exchange, become superheated steam to leave from outlet from heat-obtaining element import entering saturated vapor.
The utility model innovative point and good effect are:
The utility model innovative point is: apparatus casing adopts cylindrical structure, adopts the heat-obtaining element vertically is set, and gas approach or outlet are provided with guide shell.
The utility model good effect is: 1, cylindrical structure intensity is high, and not yielding, the insulated lining difficult drop-off is difficult for fume leakage.2, the heat-obtaining element vertically is provided with, and has eliminated the heat removing tube lee face, and adopts 20～40m/s high flow rate, and equipment is dust stratification not.3, economizer adopts and produces low-pressure steam, and dew point corrosion does not take place.Be a kind of " non-maintaining " type equipment.
Description of drawings
Fig. 1 is multitube case wave-fin pipe (being used for a steam generator) scheme sketch map.
Among the figure: 1-bobbin carriage, 2-external flow guiding cylinder, the tube bank of 3-fin heat-obtaining, 4-flue gas inlet tube, 5-smoke outlet tube, 6-apparatus casing, 7-skirt, 8-leading truck.
Fig. 2 is multitube case intubate finned tube (being used for a steam superheater) scheme sketch map.
Among the figure: 1-bobbin carriage, 2-external flow guiding cylinder, 3-fin heat removing tube, 4-smoke outlet tube, 5-flue gas inlet tube, 6-apparatus casing, 7-skirt, 8-leading truck.
Fig. 3 is single tube case wave-fin pipe (being used for an economizer) scheme sketch map.
Among the figure: 1-bobbin carriage, 2-external flow guiding cylinder, the tube bank of 3-fin heat-obtaining, 4-flue gas inlet tube, 5-smoke outlet tube, 6-apparatus casing, 7-skirt, 8-leading truck.
The specific embodiment
Fig. 1 is used for steam superheater, and apparatus casing 6 lower ends are uncovered structure, is connected with flue gas inlet tube 4, and the bottom is connected with skirt 7; External flow guiding cylinder 2 is arranged at top, is connected with smoke outlet tube 5.Install by downward inserted mode from housing 6 tops for fin heat removing tube 3 (adopt the tube bank of multitube case wave-fin, the upper end of heat removing tube is connected with bobbin carriage 1), and the lower end is with guiding trestle 8 guide securement.
Fig. 2 is used for steam superheater, and apparatus casing 6 lower ends are uncovered structure, is connected with flue gas inlet tube 4, and the bottom is connected with skirt 7; External flow guiding cylinder 2 is arranged at top, is connected with smoke outlet tube 5.Install by downward inserted mode from housing 6 tops for fin heat removing tube 3 (adopt multitube case intubate finned-tube bundle, the upper end of heat removing tube is connected with bobbin carriage 1), and the lower end is with guiding trestle 8 guide securement.
Fig. 3 is used for economizer, and apparatus casing 6 lower ends are uncovered structure, is connected with flue gas inlet tube 4, and the bottom is connected with skirt 7; External flow guiding cylinder 2 is arranged at top, is connected with smoke outlet tube 5.Fin heat-obtaining tube bank 3 (adopt the tube bank of single tube case wave-fin, the upper end of heat removing tube is connected with bobbin carriage 1) is inserted downwards the housing from housing 6 tops, and the lower end is with guiding trestle 8 guide securement.
High-temperature flue gas passes through with 20～40m/s flow velocity from flue gas inlet tube access arrangement shell side, and with heat-obtaining elements exchange heat, temperature is discharged from smoke outlet tube through external flow guiding cylinder 2 after reducing.Saturated deaerated water or saturated vapor get into from the import of heat-obtaining element, after heat exchange, discharge from the outlet of heat-obtaining element.
Claims (6)
1. a high flow rate flue gas waste heat recovery equipment comprises apparatus casing, the heat-obtaining element; High-temperature flue gas import and exhanst gas outlet; It is characterized in that: apparatus casing adopts cylindrical structure, and the heat-obtaining element vertically is provided with along cylinder type shell, and gas approach or outlet are provided with guide shell.
2. high flow rate flue gas waste heat recovery equipment according to claim 1; It is characterized in that: circular cylindrical shell flue gas flow rate 10～40m/s; The housing inboard is provided with insulating and wearing-resistant lining or is not provided with, and the high-temperature flue gas import is in the equipment bottom or in its upper side, vertical layout of equipment or horizontal layout.
3. high flow rate flue gas waste heat recovery equipment according to claim 1 is characterized in that: the heat-obtaining element is cannula structures or U-shaped structure or serpentine configuration, pipe arranged outside fin or ailhead or be not provided with.
4. according to claim 1 or 3 described high flow rate flue gas waste heat recovery equipments, it is characterized in that: the heat-obtaining element is single heat removing tube, or the heat-obtaining unit that form with the bobbin carriage set of many heat removing tubes, or with the heat-obtaining unit of conjuncted drum.
5. according to claim 1 or 3 described high flow rate flue gas waste heat recovery equipments, it is characterized in that: the heat-obtaining element can be installed or install or install from the side inserted mode from the housing bottom inserted mode that makes progress from the downward inserted mode of case top.
6. high flow rate flue gas waste heat recovery equipment according to claim 1 and 2 is characterized in that: gas approach, outlet can be at the direct opening of apparatus casing, or in hull outside the guide shell structure be set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203561103U CN202501441U (en) | 2011-09-22 | 2011-09-22 | High flow velocity flue gas waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203561103U CN202501441U (en) | 2011-09-22 | 2011-09-22 | High flow velocity flue gas waste heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202501441U true CN202501441U (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203561103U Expired - Fee Related CN202501441U (en) | 2011-09-22 | 2011-09-22 | High flow velocity flue gas waste heat recovery device |
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| Country | Link |
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| CN (1) | CN202501441U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884004A (en) * | 2012-12-19 | 2014-06-25 | 江苏飞亚化学工业有限责任公司 | Steam generator used for heat recovery |
-
2011
- 2011-09-22 CN CN2011203561103U patent/CN202501441U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884004A (en) * | 2012-12-19 | 2014-06-25 | 江苏飞亚化学工业有限责任公司 | Steam generator used for heat recovery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 100011, Beijing, Dongcheng District, 136 Wai Wai Street, imperial international A block 4, A0406-025 Patentee after: Li Xiaoyan Address before: 100013 Beijing, Dongcheng District Anwai garden 9 Building 5 No. 303 Patentee before: Li Xiaoyan |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20150922 |
|
| EXPY | Termination of patent right or utility model |