CN107726870A - Copper smelting plant flue gas waste heat recovery system and application method - Google Patents
Copper smelting plant flue gas waste heat recovery system and application method Download PDFInfo
- Publication number
- CN107726870A CN107726870A CN201711038294.7A CN201711038294A CN107726870A CN 107726870 A CN107726870 A CN 107726870A CN 201711038294 A CN201711038294 A CN 201711038294A CN 107726870 A CN107726870 A CN 107726870A
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- China
- Prior art keywords
- air
- heat
- gas
- flue
- flue gas
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0003—Monitoring the temperature or a characteristic of the charge and using it as a controlling value
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0028—Regulation
- F27D2019/0034—Regulation through control of a heating quantity such as fuel, oxidant or intensity of current
- F27D2019/004—Fuel quantity
- F27D2019/0043—Amount of air or O2 to the burner
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a kind of copper smelting plant flue gas waste heat recovery system, it includes a closed loop air flue, air inlet is set gradually on closed loop air flue, air-introduced machine, flue gas heat-exchange unit, No.1 gas outlet, No.1 air flow rate adjustment valve, air-water heat exchanger, No. two gas outlets and No. two air flow rate adjustment valves, air inlet adjustment valve is provided with air inlet, No.1 outlet regulating valve is provided with No.1 gas outlet, No. two outlet regulating valves are provided with No. two gas outlets, flue gas heat-exchange unit absorbs side and is connected on closed-loop shaped air flue, flue gas heat-exchange unit heat supply side is provided with gas approach and exhanst gas outlet, air-water heat exchanger heat supply side is connected on closed-loop shaped air flue, air-water heat exchanger absorbs side and is provided with water inlet and delivery port.It can Mist heat recovering while on copper work relieving haperacidity production line enter second absorption tower before sulfur trioxide flue gas cool-down.
Description
Technical field
The invention belongs to technical field of waste heat utilization, especially a kind of copper smelting plant flue gas waste heat recovery system and user
Method.
Background technology
Need sulfur dioxide being converted to sulfur trioxide during copper smelting plant flue gas acid preparing, conversion temperature 400 DEG C-
600 DEG C, unstrpped gas temperature rises to 420 DEG C or so and reacted into two sections of beds of conversion, enters after cooling and turns
Change three sections of beds to be reacted, sulfur trioxide needs to be cooled to 170 DEG C or so into the first absorption tower after reaction.Not by
The gas of absorption rises to 420 DEG C or so using two, three sections of residual temperatures of conversion and enters four sections of second turn of beds progress of conversion
Change, four sections of Outlet Gas Temperatures are down to 160 DEG C or so and enter second absorption tower.In order to control the sulfur trioxide cigarette of second absorption tower
Temperature degree is unlikely to too high, and sulfur trioxide cooler is set between heat exchanger and second absorption tower, indirect using cooling blower
Flue-gas temperature of the method control of heat exchange into second absorption tower.High-grade waste heat has obtained effective recovery profit in above procedure
With, for heating sulfur dioxide gas, into second absorption tower before sulfur trioxide flue-gas temperature it is still higher, this partial heat taste
Relatively low (less than 200 degrees Celsius), being disposed in air can not be utilized effectively.
With the needs of urban development and environmental improvement, clean energy resource heat supply receives great attention, and thermal source is in short supply to be turned into
Northern central heating urgent problem to be solved.If industrial afterheat recovery can be used for, heat supply can either alleviate environment and thermal source is asked
Topic, while improve industrial primary side efficiency of energy utilization.
The content of the invention
It is an object of the invention to provide a kind of copper smelting plant flue gas waste heat recovery system and the application method of the system, with
Solve Mist heat recovering while on copper work relieving haperacidity production line enter second absorption tower before sulfur trioxide flue gas cool-down.
The technical solution adopted in the present invention is as follows：
A kind of copper smelting plant flue gas waste heat recovery system, it is characterised in that：It includes a closed loop air flue, in closed loop air flue
On set gradually air inlet, air-introduced machine, flue gas heat-exchange unit, No.1 gas outlet, No.1 air flow rate adjustment valve, air-water heat exchanger,
No. two gas outlets and No. two air flow rate adjustment valves, are provided with air inlet adjustment valve on air inlet, and No.1 is provided with No.1 gas outlet
Outlet regulating valve, No. two outlet regulating valves being provided with No. two gas outlets, flue gas heat-exchange unit absorbs side and is connected on closed-loop shaped air flue,
Flue gas heat-exchange unit heat supply side is provided with gas approach and exhanst gas outlet, and air-water heat exchanger heat supply side is connected on closed-loop shaped air flue, gas
Water- to-water heat exchanger absorbs side and is provided with water inlet and delivery port.
Further, the delivery port for side being absorbed in air-water heat exchanger is provided with temperature-detecting device.
A kind of method using copper smelting plant flue gas waste heat recovery system recovery waste heat, it includes three kinds of operating methods：
1) in the case of not recovery waste heat, No.1 air flow rate adjustment valve and No. two air flow rate adjustment valves are closed, it is empty
Gas is after air inlet adjustment valve enters flue gas heat-exchange unit heating after air-introduced machine pressurizes by No.1 gas after No.1 outlet regulating valve
Outlet discharge；
2) in the case of recovery section waste heat, the regulation of No.1 outlet is controlled to adjust by the temperature feedback of temperature-detecting device
The aperture of valve, No.1 air flow rate adjustment valve is opened, close No. two air flow rate adjustment valves, open No. two outlet regulating valves；It is empty
Gas is divided into two parts after air inlet adjustment valve enters flue gas heat-exchange unit heating after air-introduced machine pressurizes, and a part is gone out by No.1
Gas port is discharged, and another part is arranged after No.1 air flow rate adjustment valve enters air-water heat exchanger cooling by No. two gas outlets
Go out；The air-water heat exchanger heat absorbing side comes from heat supply network backwater or other, and heat supply network water supply or other is gone to after hot air；
3) heat need it is larger in the case of, particularly in warm season freeze-up, it is necessary to which recovery waste heat to greatest extent, is closed
No.1 outlet regulating valve and No. two outlet regulating valves are closed, opens No.1 air flow rate adjustment valve and No. two air flow rate adjustment valves,
Air inlet adjustment valve opening is adjusted to act on as level pressure；Air follows in the closed loop air flue between flue gas heat-exchange unit and air-water heat exchanger
Ring, reach the purpose of at utmost Mist heat recovering.
Compared with prior art, the beneficial effects of the invention are as follows：
1) flue gas waste heat recovery apparatus of the invention is set up and does not influence copper work relieving haperacidity and normally produce；
2) flue gas waste heat recovery of the invention can be used for Winter heat supply or the hot water of specified parameter is used for other purposes, such as
Summer across season soil heat accumulation, and then energy consumption is saved, improve the disposable efficiency of energy utilization in copper work.
3) present invention sets the heat for being capable of some or all of recovery sulfur trioxide waste heat by valve, can be according to heat
Amount needs side to carry out flexible modulation.
Brief description of the drawings
Fig. 1 copper smelting plant flue gas waste heat recovery system structural representations of the present invention.
In figure：1- closed loop air flues, 2- air inlets, 3- air-introduced machines, 4- flue gas heat-exchange units, 5- No.1s gas outlet, 6- No.1s are empty
Air-flow adjustable valve, 7- air-water heat exchangers, No. bis- gas outlets of 8-, No. bis- air flow rate adjustment valves of 9-, 10- air inlet adjustment valves, 11-
No.1 outlet regulating valve, No. bis- outlet regulating valves of 12-, 13- gas approach, 14- exhanst gas outlets, 15- water inlets, 16- delivery ports,
17- temperature-detecting devices.
Embodiment
Below in conjunction with the accompanying drawings, technical scheme is clearly and completely described.
Embodiment 1：As shown in figure 1, a kind of copper smelting plant flue gas waste heat recovery system, including a closed loop air flue 1, closing
Set gradually on ring air flue 1 air inlet 2, air-introduced machine 3, flue gas heat-exchange unit 4, No.1 gas outlet 5, No.1 air flow rate adjustment valve 6,
7, No. two gas outlets 8 of air-water heat exchanger and No. two air flow rate adjustment valves 9, are provided with air inlet adjustment valve 10, one on air inlet 2
Number gas outlet 5 is provided with No.1 outlet regulating valve 11, is provided with No. two outlet regulating valves 12 No. two gas outlets 8, flue gas heat-exchange unit 4 is inhaled
Receive side to be connected on closed-loop shaped air flue 1, the heat supply side of flue gas heat-exchange unit 4 is provided with gas approach 13 and exhanst gas outlet 14, air water heat exchange
The heat supply side of device 7 is connected on closed-loop shaped air flue 1, and air-water heat exchanger 7 absorbs side and is provided with water inlet 16 and delivery port 16.Changed in air water
The delivery port 16 that hot device 7 absorbs side is provided with temperature-detecting device 17.
Embodiment 2：As shown in figure 1, a kind of use copper smelting plant flue gas waste heat recovery system recovery waste heat described in embodiment 1
Method, it include following three kinds in the case of operating method：
1) in the case of not recovery waste heat, No.1 air flow rate adjustment valve 6 and No. two air flow rate adjustment valves 9 are closed,
Air enters after flue gas heat-exchange unit 4 heats after No.1 outlet regulating valve 11 by air inlet adjustment valve 10 after the pressurization of air-introduced machine 3
By the discharge of No.1 gas outlet 5；
2) in the case of recovery section waste heat, controlled atmosphere is gone out by the temperature feedback of temperature-detecting device 17 to control to adjust No.1
The aperture of valve 11 is saved, opens No.1 air flow rate adjustment valve 6, closes No. two air flow rate adjustment valves 9, opens No. two outlet regulations
Valve 12；Air enters after flue gas heat-exchange unit 4 heats after the pressurization of air-introduced machine 3 by air inlet adjustment valve 10 and is divided into two parts, one
Divide and discharged by No.1 gas outlet 5, another part enters after air-water heat exchanger 7 cools by No.1 air flow rate adjustment valve 6 and led to
No. two gas outlets 8 are crossed to discharge；The air-water heat exchanger heat absorbing side comes from heat supply network backwater or other, and heat is gone to after hot air
Net water supply or other；
3) heat need it is larger in the case of, particularly in warm season freeze-up, it is necessary to which recovery waste heat to greatest extent, is closed
No.1 outlet regulating valve 11 and No. two outlet regulating valves 12 are closed, No.1 air flow rate adjustment valve 6 is opened and No. two air mass flows is adjusted
Valve 9 is saved, the regulation aperture of air inlet adjustment valve 10 acts on as level pressure；Air closing between flue gas heat-exchange unit 4 and air-water heat exchanger 7
Circulated in ring air flue 1, reach the purpose of at utmost Mist heat recovering.
Finally it should be noted that above embodiment is merely illustrative of the technical solution of the present invention, rather than to this
The limitation of invention protection domain, the simple modification or wait that one of ordinary skill in the art is carried out to technical scheme
With replacing, all without departing from the spirit and scope of technical solution of the present invention.
Claims (3)
- A kind of 1. copper smelting plant flue gas waste heat recovery system, it is characterised in that：It includes a closed loop air flue, on closed loop air flue Set gradually air inlet, air-introduced machine, flue gas heat-exchange unit, No.1 gas outlet, No.1 air flow rate adjustment valve, air-water heat exchanger, two Number gas outlet and No. two air flow rate adjustment valves, air inlet adjustment valve is provided with air inlet, is gone out in No.1 gas outlet provided with No.1 Gas regulating valve, No. two outlet regulating valves are provided with No. two gas outlets, flue gas heat-exchange unit absorbs side and is connected on closed-loop shaped air flue, cigarette Gas heat exchanger heat supply side is provided with gas approach and exhanst gas outlet, and air-water heat exchanger heat supply side is connected on closed-loop shaped air flue, air water Heat exchanger absorbs side and is provided with water inlet and delivery port.
- 2. copper smelting plant flue gas waste heat recovery system according to claim 1, it is characterised in that：Absorbed in air-water heat exchanger The delivery port of side is provided with temperature-detecting device.
- 3. a kind of method that usage right requires the 2 copper smelting plant flue gas waste heat recovery system recovery waste heats, it includes as follows Operating method in the case of three kinds：1) in the case of not recovery waste heat, No.1 air flow rate adjustment valve and No. two air flow rate adjustment valves, air warp are closed Cross after air inlet adjustment valve enters flue gas heat-exchange unit heating after air-introduced machine pressurizes and exported after No.1 outlet regulating valve by No.1 gas Discharge；2) in the case of recovery section waste heat, No.1 outlet regulating valve is controlled to adjust by the temperature feedback of temperature-detecting device Aperture, No.1 air flow rate adjustment valve is opened, close No. two air flow rate adjustment valves, open No. two outlet regulating valves；Air passes through Cross after air inlet adjustment valve enters flue gas heat-exchange unit heating after air-introduced machine pressurizes and be divided into two parts, a part passes through No.1 gas outlet Discharge, another part are discharged after No.1 air flow rate adjustment valve enters air-water heat exchanger cooling by No. two gas outlets；Institute State air-water heat exchanger heat absorbing side and come from heat supply network backwater or other, heat supply network water supply or other is gone to after hot air；3) heat need it is larger in the case of, particularly in warm season freeze-up, it is necessary to which recovery waste heat to greatest extent, closes one Number outlet regulating valve and No. two outlet regulating valves, open No.1 air flow rate adjustment valve and No. two air flow rate adjustment valves, regulation Air inlet adjustment valve opening acts on as level pressure；Air circulates in the closed loop air flue between flue gas heat-exchange unit and air-water heat exchanger, Reach the purpose of at utmost Mist heat recovering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711038294.7A CN107726870A (en) | 2017-10-23 | 2017-10-23 | Copper smelting plant flue gas waste heat recovery system and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711038294.7A CN107726870A (en) | 2017-10-23 | 2017-10-23 | Copper smelting plant flue gas waste heat recovery system and application method |
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| Publication Number | Publication Date |
|---|---|
| CN107726870A true CN107726870A (en) | 2018-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711038294.7A Pending CN107726870A (en) | 2017-10-23 | 2017-10-23 | Copper smelting plant flue gas waste heat recovery system and application method |
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| CN (1) | CN107726870A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758350A (en) * | 2021-09-25 | 2021-12-07 | 太原理工大学 | Mine fresh air heating system that prevents frostbite |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201748404U (en) * | 2010-08-31 | 2011-02-16 | 茂名市茂港电力设备厂有限公司 | Boiler flue gas waste heat recovery device |
| CN103104922A (en) * | 2013-02-06 | 2013-05-15 | 西安宇清环境工程科技有限责任公司 | Waste incineration flue gas waste heat recovery device |
| CN104791761A (en) * | 2015-04-20 | 2015-07-22 | 广州粤能电力科技开发有限公司 | Step utilization device for boiler flue gas waste heat |
| CN204897403U (en) * | 2015-08-25 | 2015-12-23 | 刘峄 | A indirect waste heat device of no energy loss safety for flue gas relieving haperacidity |
| CN205137624U (en) * | 2015-11-17 | 2016-04-06 | 北京慧峰仁和科技股份有限公司 | Boiler waste heat heating system economizer |
| CN206094140U (en) * | 2016-10-21 | 2017-04-12 | 孙立宇 | Smoke heat exchanging system |
| CN107023814A (en) * | 2017-04-25 | 2017-08-08 | 江苏科瑞工程设计有限公司 | The exhaust heat recovering method and equipment of the high-temperature flue gas containing strong corrosive medium in spent acid cracking |
| CN207335461U (en) * | 2017-10-23 | 2018-05-08 | 北京和然益华节能科技有限责任公司 | Copper smelting plant flue gas waste heat recovery system |
-
2017
- 2017-10-23 CN CN201711038294.7A patent/CN107726870A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201748404U (en) * | 2010-08-31 | 2011-02-16 | 茂名市茂港电力设备厂有限公司 | Boiler flue gas waste heat recovery device |
| CN103104922A (en) * | 2013-02-06 | 2013-05-15 | 西安宇清环境工程科技有限责任公司 | Waste incineration flue gas waste heat recovery device |
| CN104791761A (en) * | 2015-04-20 | 2015-07-22 | 广州粤能电力科技开发有限公司 | Step utilization device for boiler flue gas waste heat |
| CN204897403U (en) * | 2015-08-25 | 2015-12-23 | 刘峄 | A indirect waste heat device of no energy loss safety for flue gas relieving haperacidity |
| CN205137624U (en) * | 2015-11-17 | 2016-04-06 | 北京慧峰仁和科技股份有限公司 | Boiler waste heat heating system economizer |
| CN206094140U (en) * | 2016-10-21 | 2017-04-12 | 孙立宇 | Smoke heat exchanging system |
| CN107023814A (en) * | 2017-04-25 | 2017-08-08 | 江苏科瑞工程设计有限公司 | The exhaust heat recovering method and equipment of the high-temperature flue gas containing strong corrosive medium in spent acid cracking |
| CN207335461U (en) * | 2017-10-23 | 2018-05-08 | 北京和然益华节能科技有限责任公司 | Copper smelting plant flue gas waste heat recovery system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758350A (en) * | 2021-09-25 | 2021-12-07 | 太原理工大学 | Mine fresh air heating system that prevents frostbite |
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Application publication date: 20180223 |
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