CN201844697U - Flue gas waste heat recovery device of industrial furnace - Google Patents
Flue gas waste heat recovery device of industrial furnace Download PDFInfo
- Publication number
- CN201844697U CN201844697U CN2010205731301U CN201020573130U CN201844697U CN 201844697 U CN201844697 U CN 201844697U CN 2010205731301 U CN2010205731301 U CN 2010205731301U CN 201020573130 U CN201020573130 U CN 201020573130U CN 201844697 U CN201844697 U CN 201844697U
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- heat exchanger
- flue gas
- cold water
- heating agent
- heat
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The utility model discloses a flue gas waste heat recovery device of an industrial furnace, which comprises a softening water heat medium circulation system. The softening water heat medium circulation system comprises a cold water and heat medium heat exchanger, and the cold water and heat medium heat exchanger is communicated with a high-position soft water replenishment tank filled with soft water; a circulation pump is arranged between the cold water and heat medium heat exchanger and a flue gas heat exchanger, one end of the circulation pump is communicated with the heat medium outlet valve of the cold water and heat medium heat exchanger, and the other end of the circulation pump is communicated with the inlet valve of the flue gas heat exchanger; and the water inlet pipe of the cold water and heat medium heat exchanger is communicated with a cold water inlet valve, and the water outlet pipe of the cold water and heat medium heat exchanger is communicated with a heat storage water tank. The flue gas waste heat recovery device of the industrial furnace has a long service life and low cost of flue gas waste heat recovery, and can utilize a large amount of flue gas waste heat at the medium- and low-temperature section, prevent the pipe wall from scaling, and ensure the stability of the heat exchange coefficient.
Description
Technical field
The utility model relates to a kind of industrial furnace flue gas waste heat recovery apparatus.
Background technology
Existing industrial furnace flue gas waste heat recovery apparatus generally comprises flue collector, by-pass flue, flue gas heat exchanger, air-introduced machine, feed pump, cooling water inlet valve, hot water effluent's valve, heat storage water tank, shows control and regulation system etc.The subject matter of its existence is: because flue gas dew point to the corrosion of waste heat recovery apparatus, causes waste heat recovery apparatus short service life, flue gas waste heat recovery cost height causes a large amount of middle low-temperature zone fume afterheats not utilize (1); (2) utilize general industry cold water to reclaim fume afterheat, its shortcoming one is that industrial cold water causes the heat exchanger wall temperature low, cause fume side wall dewfall, the 2nd, the easy fouling of industrial cold water, and the high more fouling of water temperature is serious more, and after the heat exchanger fouling, heat transfer resistance increases, cause the flue gas waste heat recovery utilization rate to reduce, periodic cleaning fouling use cost to increase.
The utility model content
The purpose of this utility model is to provide a kind of long service life, and the flue gas waste heat recovery cost is low, the industrial furnace flue gas waste heat recovery apparatus that a large amount of middle low-temperature zone fume afterheats can be utilized.
The technical solution of the utility model is: it comprises flue collector, by-pass flue, flue gas heat exchanger, air-introduced machine, feed pump, cooling water inlet valve, heat storage water tank, demonstration control and regulation system, it is characterized in that, be provided with a demineralized water heating agent circulatory system, the described demineralized water heating agent circulatory system is provided with a cold water heating agent heat exchanger, and the tube side of cold water heating agent heat exchanger is communicated with the high-order additional soft wa ter jar that stores soft water; Be provided with a circulating pump between cold water heating agent heat exchanger and flue gas heat exchanger, an end of circulating pump is communicated with the heating agent outlet valve of cold water heating agent heat exchanger, and its other end is communicated with the inlet valve of flue gas heat exchanger; The water inlet pipe of cold water heating agent heat exchanger shell side is communicated with the cooling water inlet valve, and its outlet pipe is communicated with heat storage water tank.
Described flue gas heat exchanger is chuck heat pipe exchanger radially, and fume side adopts fin expansion heat-transfer surface.
Described additional soft wa ter jar is provided with slow filling with carbonated drink separating metal screen cloth, exhaust atmospheric valve and liquid level and shows.
Described circulating pump adopts variable frequency regulating speed control.
Described cold water heating agent heat exchanger is provided with blowoff valve, is used for the remaining heat medium water in system's stoppage in transit back offtake piping system.
Described demonstration control and regulation system comprises central processing unit PLC; Be installed in the preceding temperature survey of each control valve and show TI, pressure measxurement and demonstration PI, flow measurement and demonstration FI, temperature shows that adjusting Tic controls by central processing unit PLC.
Advantage of the present utility model: the demineralized water heating agent circulatory system of increase is used demineralized water, has avoided tube wall incrustation, has guaranteed the stable of heat exchange coefficient, the soft water heating agent carries out interior circulation simultaneously, water temperature is higher, thereby the assurance tube wall temperature has been avoided the generation of dew point corrosion on flue gas dew point.Use this device and carry out the flue gas waste heat recovery utilization, strengthened heat transfer, avoided the apparatus dew point corrosion, avoided tube wall incrustation, guaranteed that system heat exchange stability and high efficiency ground carries out, improve the service life of equipment, reduced operating cost.
Description of drawings
Accompanying drawing is internal structure of the present utility model and schematic flow sheet.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Embodiment 1:
The utility model comprises flue collector 1, by-pass flue 2, flue gas heat exchanger 3, air-introduced machine 4, feed pump 5, cooling water inlet valve 6, heat storage water tank 7
Other is provided with a demineralized water heating agent circulatory system, the demineralized water heating agent circulatory system comprises cold water heating agent heat exchanger 9, cold water is communicated with the water inlet pipe of cold water heating agent heat exchanger 9 through feed pump 5, cooling water inlet valve 6, is provided with a high-order additional soft wa ter jar 12 on cold water heating agent heat exchanger next door; The outlet pipe of high-order additional soft wa ter jar 12 is communicated with the inlet valve 10 of cold water heating agent heat exchanger; Be provided with a circulating pump 14 between cold water heating agent heat exchanger and flue gas heat exchanger, an end of circulating pump 14 is communicated with the heating agent outlet valve 11 of cold water heating agent heat exchanger, and its other end is communicated with the inlet valve 13 of flue gas heat exchanger; The outlet valve 15 of cold water heating agent heat exchanger is communicated with heat storage water tank 7.
Show that the control and regulation system comprises central processing unit PLC; Be installed in the preceding temperature survey of each control valve and show TI, pressure measxurement and demonstration PI, flow measurement and demonstration FI, temperature shows that adjusting Tic controls by central processing unit PLC.
During work, after the demineralized water of lower temperature boosts by circulating pump, enter radially chuck heat pipe exchanger 3 through chuck heat pipe exchanger inlet valve radially, carry out heat exchange with flue gas, temperature raises after radially chuck heat pipe exchanger outlet valve, cold water heating agent heat exchanger tube side inlet valve enter cold water heating agent heat exchanger, the higher soft water heating agent of temperature in cold water heating agent heat exchanger with the heat exchange of technology cold water after temperature reduce, through the import of cold water heating agent heat exchanger tube side outlet valve inflow soft water heat medium circulation pump, it is recycling to boost through heat medium circulation pump again.The soft water heating agent is in the process that recycles as lossy, can replenish by the additional soft wa ter jar, the soft water that replenishes can be the condensed water of low-pressure saturated steam or process system, the additional soft wa ter jar have slow fill, carbonated drink is separated, exhaust emptying and liquid level show effect, be able to moisturizing to guarantee system.Circulating pump can adopt variable frequency regulating speed control according to system's needs.System is provided with blowoff valve, is used for the remaining heat medium water in system's stoppage in transit back offtake piping system.
Technology cold water enters cold water heating agent heat exchanger shell side and the higher heat medium water heat exchange of temperature by feed pump and cooling water inlet valve, technology cold water after temperature raises flows out through the outlet valve of cold water heating agent heat exchanger shell side, after flowmeter FI shows metering, enter the hot water storage tank and store use in order to system.
Industrial furnace flue gas after gathering dust flows to radially chuck heat pipe exchanger 3 through heat exchanger inlets smoke valve 2, be reduced to more than the dew point with temperature after the demineralized water heat exchange, flow into the air-introduced machine inlet through heat exchanger outlet smoke valve 4, be delivered to smoke stack emission by air-introduced machine.Heat exchanger inlets smoke valve 2 and outlet smoke valve 4 play buffer action when radially chuck heat pipe exchanger 3 faults or maintenance, radially chuck heat pipe exchanger 3 faults or when maintenance, flue gas enters chimney through by pass flue control valve 1 and by-pass flue by air-introduced machine.By pass flue control valve 1 also can rise regulates flow through the radially exhaust gas volumn of chuck heat pipe exchanger 3 and the drag effect of heat-exchange system fume side.
Claims (6)
1. industrial furnace flue gas waste heat recovery apparatus, it comprises flue collector, by-pass flue, flue gas heat exchanger, air-introduced machine, feed pump, cooling water inlet valve, heat storage water tank, demonstration control and regulation system, it is characterized in that, be provided with a demineralized water heating agent circulatory system, the described demineralized water heating agent circulatory system is provided with a cold water heating agent heat exchanger, and cold water heating agent heat exchanger tube side is communicated with the high-order additional soft wa ter jar that stores soft water; Be provided with a circulating pump between cold water heating agent heat exchanger and flue gas heat exchanger, an end of circulating pump is communicated with the heating agent outlet valve of cold water heating agent heat exchanger, and its other end is communicated with the inlet valve of flue gas heat exchanger; The water inlet pipe of cold water heating agent heat exchanger shell side is communicated with the cooling water inlet valve, and its outlet pipe is communicated with heat storage water tank.
2. industrial furnace flue gas waste heat recovery apparatus according to claim 1 is characterized in that, described flue gas heat exchanger is jacket heat exchanger radially.
3. industrial furnace flue gas waste heat recovery apparatus according to claim 1 is characterized in that, described additional soft wa ter jar is provided with slow filling with carbonated drink separating metal screen cloth, exhaust atmospheric valve and liquid level and shows.
4. industrial furnace flue gas waste heat recovery apparatus according to claim 1 is characterized in that, described circulating pump adopts variable frequency regulating speed control.
5. industrial furnace flue gas waste heat recovery apparatus according to claim 1 is characterized in that, described cold water heating agent heat exchanger is provided with blowoff valve.
6. industrial furnace flue gas waste heat recovery apparatus according to claim 1 is characterized in that, described demonstration control and regulation system comprises central processing unit PLC; Be installed in each control valve preceding temperature survey and demonstration, pressure measxurement and demonstration, flow measurement and demonstration, temperature shows regulates the control by central processing unit PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205731301U CN201844697U (en) | 2010-10-25 | 2010-10-25 | Flue gas waste heat recovery device of industrial furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205731301U CN201844697U (en) | 2010-10-25 | 2010-10-25 | Flue gas waste heat recovery device of industrial furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201844697U true CN201844697U (en) | 2011-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205731301U Expired - Lifetime CN201844697U (en) | 2010-10-25 | 2010-10-25 | Flue gas waste heat recovery device of industrial furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201844697U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589308A (en) * | 2012-03-15 | 2012-07-18 | 机械工业第六设计研究院有限公司 | Waste heat recycling system of industrial furnaces |
| CN106693544A (en) * | 2017-03-15 | 2017-05-24 | 湖南思为能源环保工程有限公司 | Filtering device for painting room |
| CN106868262A (en) * | 2017-03-02 | 2017-06-20 | 北京福生智源科技有限公司 | It is provided with the cold-rolling continuous annealing production line high-temperature smoke discharging pipe of waste-heat recovery device |
-
2010
- 2010-10-25 CN CN2010205731301U patent/CN201844697U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589308A (en) * | 2012-03-15 | 2012-07-18 | 机械工业第六设计研究院有限公司 | Waste heat recycling system of industrial furnaces |
| CN106868262A (en) * | 2017-03-02 | 2017-06-20 | 北京福生智源科技有限公司 | It is provided with the cold-rolling continuous annealing production line high-temperature smoke discharging pipe of waste-heat recovery device |
| CN106693544A (en) * | 2017-03-15 | 2017-05-24 | 湖南思为能源环保工程有限公司 | Filtering device for painting room |
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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 |
Owner name: HU'NAN SIWEI ENERGY ENVIRONMENT ENGINEERING CO., L Free format text: FORMER NAME: HU'NAN SIWEI ENERGY ENVIRONMENTAL PROTECTION CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 410116, block B, No. two, No. 188, environmental protection road, Yuhua District, Hunan, Changsha, 503 Patentee after: Hu'nan Siwei Energy Environment Engineering Co., Ltd. Address before: 410116, block 2, No. 188, environmental protection road, Yuhua District, Hunan, Changsha, China B Patentee before: Hunan Siwei Energy Sources Environment Protection Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110525 |
|
| CX01 | Expiry of patent term |