CN104534891A - Waste heat exchanger based on cement kiln head exhaust gas - Google Patents
Waste heat exchanger based on cement kiln head exhaust gas Download PDFInfo
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- CN104534891A CN104534891A CN201410840863.XA CN201410840863A CN104534891A CN 104534891 A CN104534891 A CN 104534891A CN 201410840863 A CN201410840863 A CN 201410840863A CN 104534891 A CN104534891 A CN 104534891A
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- heat exchanger
- heat exchange
- exchange coil
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- kiln head
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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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Abstract
A waste heat exchanger based on cement kiln head exhaust gas comprises an outer heat exchanger shell and an inner heat exchanger shell arranged in the outer heat exchanger shell. An air inlet is formed in the top of the outer heat exchanger shell. An air outlet and an ash discharge outlet are formed in the bottom of the outer heat exchanger shell. A heat exchange coiled pipe is longitudinally arranged in the inner heat exchanger shell. The lower end of the heat exchange coiled pipe is communicated with a water inlet formed in the outer heat exchanger shell. The upper end of the heat exchange coiled pipe is communicated with a water outlet formed in the outer heat exchanger shell. The water outlet is located above the water inlet. The heat exchange coiled pipe is divided into four independent groups inside the inner heat exchanger shell, wherein each set is formed by connecting a first-level heat exchange coiled pipe located at the lower portion with a second-level heat exchange coiled pipe located at the upper portion. According to the waste heat exchanger, the operation management is greatly simplified, the problem that heat exchange pipeline is abraded and damaged by heavy-dust exhaust gas is solved, dust does not need to be removed in advance, no induced air equipment needs to be arranged independently, and the investment and operation management costs are greatly lowered.
Description
Technical field
The invention belongs to special mechanical equipment technical field, relate to afterheat heat exchanger, particularly a kind of afterheat heat exchanger based on cement kiln head waste gas.
Background technology
In production cement process, cement kiln head can discharge a large amount of high dust-laden exhaust gas, and EGT is between 250 DEG C ~ 350 DEG C.After high dust-laden exhaust gas is cooled by air cooler, enter after bag dust collector gathers dust and discharge, waste is caused to the energy.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of afterheat heat exchanger based on cement kiln head waste gas, utilizing cement kiln head waste gas, water back hot water, for the hot water for life such as plant area or near zone heating, do not establish depositing dust dust suppression before system, equipment is Integratively formed, without the need to setting up air inducing and dust arrester, waste gas walks shell side, and water walks tube side, and all heat exchange coil is arranged in heat exchanger shell, utilize low temperature exhaust heat, heat exchange coil road treats that pressure is run.
To achieve these goals, the technical solution used in the present invention is:
A kind of afterheat heat exchanger based on cement kiln head waste gas, the heat exchanger inner housing 2 comprising outer cover of heat exchanger body 17 and be arranged in outer cover of heat exchanger body 17, the top of described outer cover of heat exchanger body 17 has air inlet 1, bottom has air outlet 3 and ash discharging hole 4, longitudinally heat exchange coil is arranged in heat exchanger inner housing 2, the lower end of heat exchange coil is communicated with the water inlet 8 being arranged on outer cover of heat exchanger body 17, the upper end of heat exchange coil is communicated with the delivery port 9 being arranged on outer cover of heat exchanger body 17, delivery port 9 is positioned at the top of water inlet 8, described heat exchange coil is divided into independently four groups separately in heat exchanger inner housing 2, often group is connected to form with the secondary heat exchange coil pipe 12 being positioned at top by the one-level heat exchange coil 16 being positioned at below, heat exchanger inner housing 2 is fixed on apart from 1/3 height and position secondary coil support 11 single-point of its bending place, top at each one-level heat exchange coil 16, heat exchanger inner housing 2 is fixed on apart from 1/3 height and position one-level coil pipe supporting stand 15 single-point of its bending place, top at each secondary heat exchange coil pipe 12, secondary abrasionproof radome fairing 13 is provided with in the bending place, top of each one-level heat exchange coil 16 and secondary heat exchange coil pipe 12.
Described delivery port 9 arranges safety valve 5.
Described outer cover of heat exchanger body 17 arranges observation panel 6, and observation panel 6 is positioned at the below of heat exchanger inner housing 2.
Described heat exchanger inner housing 2 is installed on outer cover of heat exchanger body 17 by heat exchanger support 7.
The top being positioned at heat exchanger inner housing 2 in described heat exchanger support 7 arranges air intake one-level abrasionproof radome fairing 10, by air distribution, hot blast is flowed evenly in heat exchanger inner housing 2.
Described secondary abrasionproof radome fairing 13 is the penetrating frustum cone structure of hollow, the openend that area is large covers in heat exchange coil body 1 crooked place, sky is put in the openend that area is little, has gap between the crooked place top, upper end of described heat exchange coil body 1 and the upper shed of secondary abrasionproof radome fairing 13.
In described secondary abrasionproof radome fairing 13 frustum cone structure, the angle of bus and large place, the openend plane of area is more than or equal to 60 °, the crooked place tie point of secondary abrasionproof radome fairing 13 and heat exchange coil body 1 with the angle of heat exchange coil body 1 cross section for being less than or equal to 30 °.
Be provided with anti-vent plug by-pass flow pipe 14 in the bending place, top of each one-level heat exchange coil 16 and secondary heat exchange coil pipe 12, two pipe shafts forming top elbow are communicated with by anti-vent plug by-pass flow pipe 14.
The termination, bending place, top of described each one-level heat exchange coil 16 and secondary heat exchange coil pipe 12 is gas collection district, and the tie point of anti-vent plug by-pass flow pipe 14 is positioned at outside gas collection district.
The caliber of described anti-vent plug by-pass flow pipe 14 is consistent with the caliber of one-level heat exchange coil 16 and secondary heat exchange coil pipe 12.
Described air inlet 1 connects cement kiln head waste gas, and described delivery port 9 connects industry or hot water for life pipeline.
Compared with prior art, the present invention greatly simplify operational management, solves the destruction of high dust-laden exhaust gas heat exchanging pipe wear, does not need dedusting in advance, without the need to setting up air inducing equipment, significantly reduces investment and operational management cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is sketch of longitudinal section of the present invention.
Fig. 3 is cross section of the present invention sketch, and in figure, crosspoint is coil pipe plane relative position.
Fig. 4 is f point enlarged drawing in Fig. 3.
Fig. 5 is that one-level heat exchange coil of the present invention installation arranges schematic diagram.
Fig. 6 is secondary abrasionproof dome structure schematic diagram of the present invention.
Fig. 7 is the present invention's anti-vent plug by-pass flow tubular construction schematic diagram.
Detailed description of the invention
Embodiments of the present invention are described in detail below in conjunction with drawings and Examples.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of afterheat heat exchanger based on cement kiln head waste gas, comprises outer cover of heat exchanger body 17, and heat exchanger inner housing 2 is installed in outer cover of heat exchanger body 17 by heat exchanger support 7.Outer cover of heat exchanger body 17 is arranged observation panel 6, observation panel 6 is positioned at the below of heat exchanger inner housing 2.The top of outer cover of heat exchanger body 17 has air inlet 1, arranges air intake one-level abrasionproof radome fairing 10 above the below heat exchanger inner housing 2 of air inlet 1, by air distribution, hot blast is flowed evenly in heat exchanger inner housing 2.Air outlet 3 and ash discharging hole 4 is had bottom outer cover of heat exchanger body 17, longitudinally heat exchange coil is arranged in heat exchanger inner housing 2, heat exchange coil adopts wear-resisting finned tube, the lower end of heat exchange coil is communicated with the water inlet 8 being arranged on outer cover of heat exchanger body 17, upper end is communicated with the delivery port 9 being arranged on outer cover of heat exchanger body 17, delivery port 9 is positioned at the top of water inlet 8, and delivery port 9 arranges safety valve 5.
Wherein, air inlet 1 connects cement kiln head waste gas, and intake is by air inlet/outlet Valve controlling, and water sends into water inlet 8 by water circulating pump, and delivery port 9 connects industry or hot water for life pipeline, is delivered to and uses with focus.Air outlet 3 is connected with kiln hood deduster blast pipe.Ash discharging hole 4 connects machine for zipper, collects ash and sends into dust-precipitator dust stratification system.Before high dust-laden exhaust gas enters heat exchanger inner housing 2, do not need to increase dedusting.
As shown in Figure 2 and Figure 5, heat exchange coil is divided into independently four groups separately in heat exchanger inner housing 2, often group is connected to form with the secondary heat exchange coil pipe 12 being positioned at top by the one-level heat exchange coil 16 being positioned at below, heat exchanger inner housing 2 is fixed on apart from 1/3 height and position secondary coil support 11 single-point of its bending place, top at each one-level heat exchange coil 16, similarly, heat exchanger inner housing 2 is fixed at each secondary heat exchange coil pipe 12 apart from 1/3 height and position one-level coil pipe supporting stand 15 single-point of its bending place, top.When running when high dust-laden and high temperature, heat exchange coil body is washed away by high dust-laden waste heat hot blast, add the common disturbance of pressure flow, heat exchange coil expands naturally, can be out of shape by automatic compensating, make heat exchange coil moment that is in operation be in micro-vibrational state, play the effect stoping incrustation scale to stick to inner-walls of duct, the later stage discharges fouling water by blowdown.Be provided with secondary abrasionproof radome fairing 13 in the bending place, top of each one-level heat exchange coil 16 and secondary heat exchange coil pipe 12, direct protective conduit should grind position.Secondary abrasionproof radome fairing 13 hollow is penetrating, can play and help use of bestirring oneself.
As shown in Figure 2 and Figure 6, secondary abrasionproof radome fairing 13 is the penetrating bucking ladder structure of hollow, the openend that area is large covers in heat exchange coil body 1 crooked place, sky is put in the openend that area is little, has gap between the crooked place top, upper end of heat exchange coil body 1 and the upper shed of secondary abrasionproof radome fairing 13.In secondary abrasionproof radome fairing 13 bucking ladder structure, the angle of hypotenuse and large place, the openend plane of area is more than or equal to 60 °, the crooked place tie point of secondary abrasionproof radome fairing 13 and heat exchange coil body 1 with the angle of heat exchange coil body 1 cross section for being less than or equal to 30 °.In running, secondary abrasionproof radome fairing 13 also plays air current composition effect, after running certain hour, accumulates a large amount of dust, can further improve the abrasion-resistance of pipeline, directly play a protective role to pipeline in secondary abrasionproof radome fairing 13 in high dusty circumstances.
As shown in Figure 2 and Figure 7, be provided with anti-vent plug by-pass flow pipe 14 in the bending place, top of each one-level heat exchange coil 16 and secondary heat exchange coil pipe 12, two pipe shafts forming top elbow are communicated with by anti-vent plug by-pass flow pipe 14.The caliber of anti-vent plug by-pass flow pipe 14 is consistent with the caliber of one-level heat exchange coil 16 and secondary heat exchange coil pipe 12.The termination, bending place, top of each one-level heat exchange coil 16 and secondary heat exchange coil pipe 12 is gas collection district, and the tie point of anti-vent plug by-pass flow pipe 14 is positioned at outside gas collection district.After increasing anti-vent plug by-pass flow pipe 14, pipeline local resistance is declined, and air accumulation gas collection district above anti-vent plug by-pass flow pipe 14, can not gas lock be produced.
The course of work of the present invention is:
Kiln hood waste heat waste gas enters heat exchanger inner housing 2 by air inlet 1, and through heat exchange hot water in heat exchanger inner housing 2, waste gas enters kiln hood dust arrester installation from air outlet 3, and the dust-laden particle of sedimentation in use procedure, discharges from ash discharging hole 4.Cold water enters heat exchange coil from water inlet 8, and cold water is after waste gas heating, then from delivery port 9 outflow heat exchanger, four groups of delivery ports 8 are mutually corresponding with four groups of water inlets 9, and often organize the equal mounting safety valve 5 of heat exchange coil delivery port 9, overall heat exchange device is heat convection.
Heat exchange coil of the present invention is divided into independently four groups separately in heat exchanger inner housing 2, and often group is connected to form with the secondary heat exchange coil pipe 12 being positioned at top by the one-level heat exchange coil 16 being positioned at below.After hot blast enters outer cover of heat exchanger body 17 from air inlet 1, first through air intake one-level abrasionproof radome fairing 10, by its air distribution, hot blast is flowed in heat exchanger inner housing 2 more even, and organize high dust-laden hot blast indirectly to wash away heat exchange coil.
To sum up, the present invention, without the need to unnecessary configuration air inducing blower fan, directly utilizes kiln hood tail exhaust blower power air distribution; The all pipelines of device interior are vertical layout, without lateral arrangement pipeline, and do abrasionproof process at tube bends place, can reduce pipe wear.
What deserves to be explained is, the present invention is used for but is not limited to the UTILIZATION OF VESIDUAL HEAT IN of cement kiln head waste gas; The present invention is used for high dust-laden exhaust gas but is not limited to high dust-laden exhaust gas UTILIZATION OF VESIDUAL HEAT IN; The present invention is that afterheat of hot water utilizes equipment, heat hot water operation under positive pressure, but also can be used for the heat supply of the normal pressure method of operation; The present invention generally designs becomes cylindrical, but also can be designed to rectangle; Air current composition dustproof design of the present invention, is divided into two-stage, can arrange single-stage or multistage if desired, and can change primary air stream cover according to specific needs and put.Waste heat exchange device heat exchange coil of the present invention adopts finned tube but is not limited to use finned tube.Waste heat exchange device of the present invention does not arrange preposition cleaner but does not get rid of the situation arranging cleaner; Waste heat exchange device of the present invention does not arrange independent air-introduced machine air inducing, but does not get rid of the situation arranging separately air-introduced machine.This afterheat heat exchanger of the present invention is vertical placement generally, but does not get rid of the situation of transverse direction and the placement of other directions.
Claims (10)
1. the afterheat heat exchanger based on cement kiln head waste gas, comprise outer cover of heat exchanger body (17) and be arranged at the heat exchanger inner housing (2) in outer cover of heat exchanger body (17), the top of described outer cover of heat exchanger body (17) has air inlet (1), bottom has air outlet (3) and ash discharging hole (4), longitudinally heat exchange coil is arranged in heat exchanger inner housing (2), the lower end of heat exchange coil is communicated with the water inlet (8) being arranged on outer cover of heat exchanger body (17), the upper end of heat exchange coil is communicated with the delivery port (9) being arranged on outer cover of heat exchanger body (17), delivery port (9) is positioned at the top of water inlet (8), it is characterized in that, described heat exchange coil is divided into independently four groups separately in heat exchanger inner housing (2), often group is by being positioned at the one-level heat exchange coil (16) of below and the secondary heat exchange coil pipe (12) above being positioned at connects to form, heat exchanger inner housing (2) is fixed on apart from 1/3 height and position secondary coil support (11) single-point of its bending place, top each one-level heat exchange coil (16), heat exchanger inner housing (2) is fixed on apart from 1/3 height and position one-level coil pipe supporting stand (15) single-point of its bending place, top each secondary heat exchange coil pipe (12), secondary abrasionproof radome fairing (13) is provided with in the bending place, top of each one-level heat exchange coil (16) and secondary heat exchange coil pipe (12).
2. according to claim 1 based on the afterheat heat exchanger of cement kiln head waste gas, it is characterized in that, described delivery port (9) arranges safety valve (5).
3. according to claim 1 based on the afterheat heat exchanger of cement kiln head waste gas, it is characterized in that, described outer cover of heat exchanger body (17) arranges observation panel (6), and observation panel (6) is positioned at the below of heat exchanger inner housing (2).
4. according to claim 1 based on the afterheat heat exchanger of cement kiln head waste gas, it is characterized in that, described heat exchanger inner housing (2) is installed on outer cover of heat exchanger body (17) by heat exchanger support (7).
5. according to claim 1 based on the afterheat heat exchanger of cement kiln head waste gas, it is characterized in that, the top being positioned at heat exchanger inner housing (2) in described heat exchanger support (7) arranges air intake one-level abrasionproof radome fairing (10), by air distribution, hot blast is flowed evenly in heat exchanger inner housing (2).
6. according to claim 1 based on the afterheat heat exchanger of cement kiln head waste gas, it is characterized in that, described secondary abrasionproof radome fairing (13) is the penetrating frustum cone structure of hollow, the openend that area is large covers in heat exchange coil body (1) crooked place, sky is put in the openend that area is little, has gap between the crooked place top, upper end of described heat exchange coil body (1) and the upper shed of secondary abrasionproof radome fairing (13).
7. according to claim 6 based on the afterheat heat exchanger of cement kiln head waste gas, it is characterized in that, in described secondary abrasionproof radome fairing (13) frustum cone structure, the angle of bus and large place, the openend plane of area is more than or equal to 60 °, the crooked place tie point of secondary abrasionproof radome fairing (13) and heat exchange coil body (1) with the angle of heat exchange coil body (1) cross section for being less than or equal to 30 °.
8. according to claim 1 based on the afterheat heat exchanger of cement kiln head waste gas, it is characterized in that, anti-vent plug by-pass flow pipe (14) is provided with in the bending place, top of each one-level heat exchange coil (16) and secondary heat exchange coil pipe (12), two pipe shafts forming top elbow are communicated with by anti-vent plug by-pass flow pipe (14), and the caliber of described anti-vent plug by-pass flow pipe (14) is consistent with the caliber of one-level heat exchange coil (16) and secondary heat exchange coil pipe (12).
9. according to claim 8 based on the afterheat heat exchanger of cement kiln head waste gas, it is characterized in that, the termination, bending place, top of described each one-level heat exchange coil (16) and secondary heat exchange coil pipe (12) is gas collection district, and the tie point of anti-vent plug by-pass flow pipe (14) is positioned at outside gas collection district.
10. according to claim 1 based on the afterheat heat exchanger of cement kiln head waste gas, it is characterized in that, described air inlet (1) connects cement kiln head waste gas, and described delivery port (9) connects industry or hot water for life pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410840863.XA CN104534891B (en) | 2014-12-29 | 2014-12-29 | A kind of afterheat heat exchanger based on cement kiln head waste gas |
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| CN201410840863.XA CN104534891B (en) | 2014-12-29 | 2014-12-29 | A kind of afterheat heat exchanger based on cement kiln head waste gas |
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| CN104534891A true CN104534891A (en) | 2015-04-22 |
| CN104534891B CN104534891B (en) | 2016-04-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174020A (en) * | 2019-05-28 | 2019-08-27 | 山东大学 | A kind of heat exchanger of unsymmetrical arrangement |
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| JP2001141391A (en) * | 1999-11-12 | 2001-05-25 | Tokyo Gas Engineering Co Ltd | Method of removing ash or dust adhering to heat conductive pipe of exhaust gas heat exchanger, and its device |
| CN2545555Y (en) * | 2002-05-14 | 2003-04-16 | 高国纯 | Vertical tube heat exchanger |
| JP2007017029A (en) * | 2005-07-05 | 2007-01-25 | Daido Steel Co Ltd | Waste heat recovery device for industrial furnace |
| CN103486868A (en) * | 2013-09-18 | 2014-01-01 | 中国科学院广州能源研究所 | Efficient dust removing waste heat recycling and energy saving device |
| CN203639490U (en) * | 2013-11-13 | 2014-06-11 | 新兴河北工程技术有限公司 | High-temperature smoke residual heat recycling device |
| CN103925823A (en) * | 2014-05-05 | 2014-07-16 | 山东省能源与环境研究院 | Waste heat utilization heat exchanger and multilevel heat accumulation system thereof |
| CN204514069U (en) * | 2014-12-29 | 2015-07-29 | 西安建筑科技大学 | A kind of afterheat heat exchanger based on cement kiln head waste gas |
-
2014
- 2014-12-29 CN CN201410840863.XA patent/CN104534891B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001141391A (en) * | 1999-11-12 | 2001-05-25 | Tokyo Gas Engineering Co Ltd | Method of removing ash or dust adhering to heat conductive pipe of exhaust gas heat exchanger, and its device |
| CN2545555Y (en) * | 2002-05-14 | 2003-04-16 | 高国纯 | Vertical tube heat exchanger |
| JP2007017029A (en) * | 2005-07-05 | 2007-01-25 | Daido Steel Co Ltd | Waste heat recovery device for industrial furnace |
| CN103486868A (en) * | 2013-09-18 | 2014-01-01 | 中国科学院广州能源研究所 | Efficient dust removing waste heat recycling and energy saving device |
| CN203639490U (en) * | 2013-11-13 | 2014-06-11 | 新兴河北工程技术有限公司 | High-temperature smoke residual heat recycling device |
| CN103925823A (en) * | 2014-05-05 | 2014-07-16 | 山东省能源与环境研究院 | Waste heat utilization heat exchanger and multilevel heat accumulation system thereof |
| CN204514069U (en) * | 2014-12-29 | 2015-07-29 | 西安建筑科技大学 | A kind of afterheat heat exchanger based on cement kiln head waste gas |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174020A (en) * | 2019-05-28 | 2019-08-27 | 山东大学 | A kind of heat exchanger of unsymmetrical arrangement |
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| CN104534891B (en) | 2016-04-13 |
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