CN103123218A - Rotary cement kiln waste heat recoverer with conduit heat pipes embedded - Google Patents
Rotary cement kiln waste heat recoverer with conduit heat pipes embedded Download PDFInfo
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- CN103123218A CN103123218A CN201310098481XA CN201310098481A CN103123218A CN 103123218 A CN103123218 A CN 103123218A CN 201310098481X A CN201310098481X A CN 201310098481XA CN 201310098481 A CN201310098481 A CN 201310098481A CN 103123218 A CN103123218 A CN 103123218A
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- heat
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- ventilating duct
- water cooled
- cooling wall
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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
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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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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Abstract
A rotary cement kiln waste heat recoverer with conduit heat pipes embedded comprises an outer cover, a water cooled wall and a heat exchanger. The water cooled wall is arranged on the surficial periphery of a rotary cement kiln, and a clearance is reserved between the water cooled wall and the surface of a rotary kiln to form a first ventilating duct. The outer cover is arranged on the periphery of the water cooled wall, a clearance is reserved between the outer cover and the water cooled wall to form a second ventilating duct, and the first ventilating duct and the second ventilating duct are communicated with each other. The outer cover is provided with an air inlet duct and a hollow cavity communicated with the first ventilating duct and the second ventilating duct, and the heat exchanger is arranged inside the hollow cavity. A working medium channel is arranged inside the water cooled wall, and the working medium outlet of the working medium channel is connected with the heat exchanger. Axial conduit heat pipes are inlaid in the water cooled wall. The rotary cement kiln waste heat recoverer with the conduit heat pipes embedded transmits the heat which is collected on the top portion of the water cooled wall and caused by heat convection inside the water cooled wall downward to achieve the homogenization of the temperature inside the water cooled wall, further achieves the stability of the surficial temperature and normal operation of the rotary cement kiln, and is high in heat recycling exchanging efficiency, and good in effect.
Description
Technical field
The present invention relates to a kind of device for cement rotary kiln surface heat recovery, belong to the heat recovery technology field.
Background technology
Cement industry is the industry of a highly energy-consuming high pollution, and cement rotary kiln is a typical high-energy equipment of dry production cement process.Rotary kiln surface temperature when work is higher, and greatly about 200 ℃-400 ℃, most of heat all scatters and disappears with radiation mode, needs simultaneously to carry out cooling with cold water or cold wind to the rotary kiln drum surface.It is larger that this working method makes cement rotary kiln required material consumption in service and brick consume, and also causes the serious waste of the energy.
CN102636022A discloses a kind of " dry method cement rotary kiln jacket casing waste heat recovery heat-exchanger rig ", at the outside of described cement rotary kiln body cover, one or more snippets fixed outer cylinder cover to be arranged, outer jacket casing two ends are provided with the working medium import, cement rotary kiln body and urceolus inner room maintain the interval and form working medium runner and heat transfer space, and the jacket casing middle part is provided with sender property outlet outside.Cold heat-exchange working medium can be outside every section the two ends of jacket casing enter the interval of two cylindrical shells, heated working medium is discharged from this section middle part stationary exit, utilizes system to supply with external heat, completes cement rotary kiln surface waste heat recovery.This device can not change existing cement rotary kiln body construction and not affect on the basis of its operation, with the surperficial heat recovery of the cement rotary kiln that originally wasted.But this device can only reclaim heat exchange by a kind of working medium, and working medium is to flow between jacket casing and cement rotary kiln body surface outside, directly contact with cement rotary kiln body, the recovery heat exchange efficiency is low, effect is not good enough, and cement rotary kiln body is had certain infringement.
Summary of the invention
The present invention is directed to the deficiency that existing cement revolving tubular kiln surface heat recovery technology exists, provide a kind of to rotary kiln cylindrical shell good cooling results, reclaim the cement revolving tubular kiln waste-heat recoverer of the high interior embedded groove passageway heat pipe of heat exchange efficiency.
Interior embedded groove passageway heat pipe cement revolving tubular kiln waste-heat recoverer of the present invention, adopt following technical scheme:
In being somebody's turn to do, the cement revolving tubular kiln waste-heat recoverer of embedded groove passageway heat pipe, comprise outer cover, water-cooling wall and heat exchanger; Water-cooling wall is arranged on the surface periphery of cement revolving tubular kiln, has the gap between the surface of water-cooling wall and cement revolving tubular kiln, forms the first ventilating duct; Outer cover is arranged on the periphery of water-cooling wall, is provided with the gap between outer cover and water-cooling wall, forms the second ventilating duct, and the first ventilating duct and the second ventilating duct are communicated with; Be provided with air inlet duct and a cavity that is communicated with the first ventilating duct and the second ventilating duct on outer cover, be provided with heat exchanger in this cavity; Be provided with the working medium passage in water-cooling wall, the sender property outlet of working medium passage is connected with heat exchanger; Water-cooling wall is embedded with the axial slot heat pipe.
Outer cover and water-cooling wall all are hexagon, can make like this air that enters in ventilating duct form backflow on the position at hexagonal six angles, not only make and strengthen with the heat transfer effect of water-cooling wall and rotary kiln surface but also the time of staying in ventilating duct also lengthens, strengthen like this heat recovery effect, realized the recovery of more heats.
The low boiling point working medium (perhaps general working medium) that is entered by the working medium import of water-cooling wall and the cold air that enters through the air channel on outer cover when absorbing the heat on rotary kiln surface to the rotary kiln surface cooling.Because in water-cooling wall, refrigerant flow rate is relatively low, heat exchange area is larger, and Convective Heat Transfer makes the fluid collection of higher temperature on the top of water-cooling wall, and the fluid of lower temperature is in the bottom of water-cooling wall.In water-cooling wall, the existence of the interior temperature difference of working medium can affect the intensity of heat radiation process, affects the uniformity of cement kiln tube body Temperature Distribution, is unfavorable for the operation of cement kiln.Utilize the high-termal conductivity of axial slot heat pipe, strong uniform temperature and the reversible characteristics of direction of heat flow, can effectively solve the problem of the temperature distributing disproportionation that exists in water-cooling wall.Axially be embedded in the conduit heat pipe in water-cooling wall, heat due to the high temperature fluid at top that heat convection is gathered in is transmitted to rapidly the bottom, make the equalizing temperature of working medium in water-cooling wall, and then the temperature of keeping the rotary kiln drum surface is within a metastable scope, be conducive to keep the normal operation of cement kiln, the working life that also is conducive to extend cement kiln.
The present invention has formed one on the cement rotary kiln surface can realize water-cooling wall and heat exchanger combination structure, is aided with Fan pipeline, realizes regulating and waste heat recovery for the step of rotary kiln surface temperature.Simultaneously, by high-termal conductivity and the reversible characteristics of direction of heat flow of axial slot heat pipe in water-cooling wall, in further even water-cooling wall, the temperature of working medium, be conducive to keep the normal operation of cement kiln like this, and the energy consumption and the material that reduce cement production process consume.
Description of drawings
Fig. 1 is the structural representation of the cement revolving tubular kiln waste-heat recoverer of interior embedded groove passageway heat pipe of the present invention.
Fig. 2 is the structural representation of water-cooling wall in the present invention.
Fig. 3 is the structural representation of fixture 9 in Fig. 2.
In figure: 1. heat exchanger, 2. water-cooling wall, 3. cement revolving tubular kiln, 4. outer cover, 5. air inlet duct, 6. the first ventilating duct, 7. the second ventilating duct, 8. heat pipe, 9. fixture, 10, the heat pipe installing hole, 11, the working medium through hole, 12, contiguous block.
The specific embodiment
The cement revolving tubular kiln waste-heat recoverer of interior embedded groove passageway heat pipe of the present invention as shown in Figure 1, mainly comprises outer cover 4, water-cooling wall 2 and heat exchanger 1.Outer cover 4 and water-cooling wall 2 all are hexagon.Water-cooling wall 2 is arranged on the surface periphery of cement revolving tubular kiln 3, has the gap between the surface of water-cooling wall 2 and cement revolving tubular kiln 3, and this gap, place forms the first ventilating duct 6.Outer cover 4 is arranged on the periphery of water-cooling wall 2, is provided with the gap between outer cover 4 and water-cooling wall 2, and this gap, place forms the second ventilating duct 7.Be provided with air inlet duct 5 and a cavity that is communicated with the first ventilating duct 6 and the second ventilating duct 7 on outer cover 4, be provided with heat exchanger 1 in this cavity.Water-cooling wall 2 can be made two parts symmetry and link together, and by the gap between two parts, the first ventilating duct 6 and the second ventilating duct 7 is connected.
Fig. 2 has provided the structure of water-cooling wall, and heat pipe 8 is fixed in water-cooling wall 2 by fixture 9.As shown in Figure 3, fixture 9 is provided with heat pipe installing hole 10, working medium through hole 11 and contiguous block 12, heat pipe installing hole 10 is positioned at the middle part of fixture 9, and working medium through hole 11 is evenly distributed on the periphery of heat pipe installing hole 10, links together by the inwall of contiguous block 12 with water-cooling wall.Working medium through hole 11 flows to and flows out for the working medium in water-cooling wall.Heat pipe 8 used is aluminium ammonia axial slot heat pipe, and pipe wall material is aluminium, and intraductal working medium is ammonia, and the conduit cross section is Ω shape, along axial expansion.The operating temperature range of aluminium ammonia heat pipe is-60 ℃-100 ℃, is applicable to the typical condition of cement kiln waste heat recovery of the present invention.Utilize the high-termal conductivity of axial slot heat pipe, strong uniform temperature and the reversible characteristics of direction of heat flow, solve the problem of the temperature distributing disproportionation that exists in water-cooling wall, be conducive to keep the normal operation of cement kiln and the working life that extends cement kiln.
During cement revolving tubular kiln 3 work, surface temperature is higher, is placed in this moment in the water-cooling wall 2 of cement revolving tubular kiln 3 outer surfaces and passes into cold fluid working medium.Can absorb the radiations heat energy on rotary kiln 3 surfaces during through rotary kiln 3 outer surface space when the cold fluid flow of water-cooling wall 2, the cold fluid in water-cooling wall 2 is heated the laggard heat exchanger 1 that enters cement rotary kiln 3 tops.Simultaneously, cold air enters the first ventilating duct 6 and the second ventilating duct 7 through air inlet duct 5, be heated when flowing through cement revolving tubular kiln 3 surface, absorb the heat on rotary kiln 3 surfaces, air after heating enters outside the pipe of heat exchanger 1, continues the heating heat exchanger 1 interior fluid of pipe as thermal source, and this fluid is from water-cooling wall 2, heated tube fluid is collected utilization in the exit, thereby has realized the recycling to the surperficial waste heat of cement revolving tubular kiln.Realize step adjustment and the efficient waste heat of cement revolving tubular kiln surface temperature are reclaimed by flow and the cold flow in air inlet duct 5 of regulating water-cooling wall 2 interior working medium.
Claims (2)
1. the cement revolving tubular kiln waste-heat recoverer of embedded groove passageway heat pipe in a kind, comprise outer cover, water-cooling wall and heat exchanger; It is characterized in that: water-cooling wall is arranged on the surface periphery of cement revolving tubular kiln, has the gap between the surface of water-cooling wall and cement revolving tubular kiln, forms the first ventilating duct; Outer cover is arranged on the periphery of water-cooling wall, is provided with the gap between outer cover and water-cooling wall, forms the second ventilating duct, and the first ventilating duct and the second ventilating duct are communicated with; Be provided with air inlet duct and a cavity that is communicated with the first ventilating duct and the second ventilating duct on outer cover, be provided with heat exchanger in this cavity; Be provided with the working medium passage in water-cooling wall, the sender property outlet of working medium passage is connected with heat exchanger; Water-cooling wall is embedded with the axial slot heat pipe.
2. the cement revolving tubular kiln waste-heat recoverer of interior embedded groove passageway heat pipe according to claim 1, it is characterized in that: described outer cover and water-cooling wall all are hexagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310098481XA CN103123218B (en) | 2013-03-26 | 2013-03-26 | Rotary cement kiln waste heat recoverer with conduit heat pipes embedded |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310098481XA CN103123218B (en) | 2013-03-26 | 2013-03-26 | Rotary cement kiln waste heat recoverer with conduit heat pipes embedded |
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| CN103123218A true CN103123218A (en) | 2013-05-29 |
| CN103123218B CN103123218B (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310098481XA Expired - Fee Related CN103123218B (en) | 2013-03-26 | 2013-03-26 | Rotary cement kiln waste heat recoverer with conduit heat pipes embedded |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105408718A (en) * | 2013-07-26 | 2016-03-16 | A·埃伯哈德 | System and method for recovering waste heat generated in internally insulated reactors |
| CN109320106A (en) * | 2018-12-04 | 2019-02-12 | 中冶焦耐(大连)工程技术有限公司 | A kind of waste-heat recovery device and technique of electrically fused magnesium fused weight |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2101727A (en) * | 1981-07-16 | 1983-01-19 | Interatom | A device for cooling rotary cylindrical kilns and for exploiting the waste heat therefrom |
| CN202145095U (en) * | 2011-05-31 | 2012-02-15 | 湖南思为能源环保有限公司 | Device for reclaiming radiant heat on surface of rotary kiln cylinder body |
| CN203116500U (en) * | 2013-03-26 | 2013-08-07 | 山东省能源与环境研究院 | Cement rotary kiln waste heat recoverer with embedded channel heat pipes |
-
2013
- 2013-03-26 CN CN201310098481XA patent/CN103123218B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2101727A (en) * | 1981-07-16 | 1983-01-19 | Interatom | A device for cooling rotary cylindrical kilns and for exploiting the waste heat therefrom |
| CN202145095U (en) * | 2011-05-31 | 2012-02-15 | 湖南思为能源环保有限公司 | Device for reclaiming radiant heat on surface of rotary kiln cylinder body |
| CN203116500U (en) * | 2013-03-26 | 2013-08-07 | 山东省能源与环境研究院 | Cement rotary kiln waste heat recoverer with embedded channel heat pipes |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105408718A (en) * | 2013-07-26 | 2016-03-16 | A·埃伯哈德 | System and method for recovering waste heat generated in internally insulated reactors |
| CN105408718B (en) * | 2013-07-26 | 2020-05-12 | A·埃伯哈德 | System and method for recovering waste heat generated in an internally insulated reactor |
| CN109320106A (en) * | 2018-12-04 | 2019-02-12 | 中冶焦耐(大连)工程技术有限公司 | A kind of waste-heat recovery device and technique of electrically fused magnesium fused weight |
| CN109320106B (en) * | 2018-12-04 | 2023-09-15 | 中冶焦耐(大连)工程技术有限公司 | Waste heat recovery device and process for fused magnesium fused lump |
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| Publication number | Publication date |
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| CN103123218B (en) | 2013-12-25 |
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Granted publication date: 20131225 |