CN103123218B - 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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- CN103123218B CN103123218B CN201310098481XA CN201310098481A CN103123218B CN 103123218 B CN103123218 B CN 103123218B CN 201310098481X A CN201310098481X A CN 201310098481XA CN 201310098481 A CN201310098481 A CN 201310098481A CN 103123218 B CN103123218 B CN 103123218B
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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 to the rotary kiln drum surface, to carry out cooling with cold water or cold wind simultaneously.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 is arranged, outer jacket casing two ends are provided with the working medium import, cement rotary kiln body and urceolus inner room maintain 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 from 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, to supply with external heat, utilizes system, 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, by the cement rotary kiln surface heat recovery originally wasted.But this device can only be reclaimed heat exchange by a kind of working medium, and working medium is between jacket casing and cement rotary kiln body surface, to flow outside, directly with cement rotary kiln body, contact, the recovery heat exchange efficiency is low, effect is not good enough, and cement rotary kiln body is had to 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 interior embedded groove passageway heat pipe that heat exchange efficiency is high.
Interior embedded groove passageway heat pipe cement revolving tubular kiln waste-heat recoverer of the present invention adopts 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, between the surface of water-cooling wall and cement revolving tubular kiln, has gap, forms the first ventilating duct; Outer cover is arranged on the periphery of water-cooling wall, between outer cover and water-cooling wall, is provided with gap, 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 be communicated with the first ventilating duct and the second ventilating duct on outer cover, in this cavity, be provided with heat exchanger; 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 entered in ventilating duct form backflow on the position at hexagonal six angles, not only make with heat transfer effect reinforcement but also the time of staying in ventilating duct of water-cooling wall and rotary kiln surface and also lengthen, strengthen like this heat recovery effect, realized the recovery of more heats.
The cold air that the low boiling point working medium entered by the working medium import of water-cooling wall (or general working medium) and the air channel on outer cover enter 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 top of the fluid collection of higher temperature at 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 existed in water-cooling wall.By the conduit heat pipe, axially be embedded in water-cooling wall, the heat of the high temperature fluid due to top that heat convection is gathered in is transmitted to rapidly to bottom, make the equalizing temperature of working medium in water-cooling wall, and then the temperature that maintains the rotary kiln drum surface is within a metastable scope, be conducive to maintain 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 maintain the normal operation of cement kiln like this, and the energy consumption and the material that reduce cement production process consume.
The accompanying drawing explanation
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 comprise 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, between the surface of water-cooling wall 2 and cement revolving tubular kiln 3, exists ，Gai Chu gap, gap to form the first ventilating duct 6.Outer cover 4 is arranged on the periphery of water-cooling wall 2, is provided with ，Gai Chu gap, gap between outer cover 4 and water-cooling wall 2 and forms the second ventilating duct 7.Be provided with air inlet duct 5 and a cavity be 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, by contiguous block 12 and the inwall of water-cooling wall, links together.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 existed in water-cooling wall, be conducive to maintain 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, now is placed 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 when the cold fluid flow of water-cooling wall 2 during through rotary kiln 3 outer surface space, enter the heat exchanger 1 on cement revolving tubular kiln 3 tops after the cold fluid in water-cooling wall 2 is heated.Simultaneously, cold air enters the first ventilating duct 6 and the second ventilating duct 7 through air inlet duct 5, when flowing through cement revolving tubular kiln 3 surface, be heated, absorb the heat on rotary kiln 3 surfaces, air after heating enters outside the pipe of heat exchanger 1, as thermal source, continues the fluid in heating heat exchanger 1 pipe, and this fluid is from water-cooling wall 2, heated tube fluid is collected utilization in exit, thereby has realized the recycling to cement revolving tubular kiln surface waste heat.By flow and the cold flow in air inlet duct 5 of regulating water-cooling wall 2 interior working medium, realize step adjustment and the efficient waste heat of cement revolving tubular kiln surface temperature are reclaimed.
Claims (1)
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, between the surface of water-cooling wall and cement revolving tubular kiln, has gap, forms the first ventilating duct; Outer cover is arranged on the periphery of water-cooling wall, between outer cover and water-cooling wall, is provided with gap, 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 be communicated with the first ventilating duct and the second ventilating duct on outer cover, in this cavity, be provided with heat exchanger; 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; Air inlet duct all is communicated with the first ventilating duct and the second ventilating duct; Water-cooling wall is divided into two parts, and two parts arrange respectively gap in upper and lower, by the gap between two parts, the first ventilating duct and the second ventilating duct is connected; Heat pipe is fixed in water-cooling wall by fixture, fixture is provided with heat pipe installing hole, working medium through hole and contiguous block, the heat pipe mounting hole site is in the middle part of fixture, the working medium through hole is evenly distributed on the periphery of heat pipe installing hole, inwall by contiguous block and water-cooling wall links together, and the working medium through hole flows to and flows out for the working medium in water-cooling wall; Described outer cover and water-cooling wall all are hexagon;
During cement revolving tubular kiln work, pass into cold fluid working medium in the water-cooling wall of cement revolving tubular kiln outer surface; Can absorb the radiations heat energy on rotary kiln surface when the cold fluid flow of water-cooling wall during through rotary kiln outer surface space, enter the heat exchanger on cement revolving tubular kiln top after the cold fluid in water-cooling wall is heated; Simultaneously, cold air enters the first ventilating duct and the second ventilating duct through air inlet duct, when flowing through the cement revolving tubular kiln surface, be heated, absorb the heat on rotary kiln surface, air after heating enters outside the pipe of heat exchanger, continue the cold fluid in the heating heat exchanger pipe as thermal source, heated tube fluid is collected utilization in exit.
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 |
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| 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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| Publication Number | Publication Date |
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| CN103123218A CN103123218A (en) | 2013-05-29 |
| CN103123218B true CN103123218B (en) | 2013-12-25 |
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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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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL3025110T3 (en) * | 2013-07-26 | 2018-10-31 | EBERHARD, Anette | System and method for recovering waste heat generated in internally insulated reactors |
| 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 |
| CN112696925A (en) * | 2021-01-14 | 2021-04-23 | 华北理工大学 | Smelting rotary kiln head refractory material cooling and waste heat recovery device and method |
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 |
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| CN103123218A (en) | 2013-05-29 |
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