CN108469192B - Heat exchanger and heat exchange system for heat exchange between steam drum and high-temperature gas - Google Patents
Heat exchanger and heat exchange system for heat exchange between steam drum and high-temperature gas Download PDFInfo
- Publication number
- CN108469192B CN108469192B CN201810301986.4A CN201810301986A CN108469192B CN 108469192 B CN108469192 B CN 108469192B CN 201810301986 A CN201810301986 A CN 201810301986A CN 108469192 B CN108469192 B CN 108469192B
- Authority
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- China
- Prior art keywords
- heat
- temperature gas
- drum
- steam drum
- gas channel
- 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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Links
- 238000007664 blowing Methods 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 73
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 15
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims 1
- 238000002309 gasification Methods 0.000 description 9
- 239000002028 Biomass Substances 0.000 description 7
- 239000003245 coal Substances 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- -1 potassium (K) Chemical class 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a heat exchanger for heat exchange of a steam drum and high-temperature gas and a heat exchange system based on the heat exchanger, which can be used for transferring heat between the steam drum and a high-temperature gas channel, wherein the steam drum is arranged above the high-temperature gas channel. The heat exchanger comprises a plurality of heat pipes; the heat pipes are respectively and independently arranged. Both ends of any one heat pipe are respectively arranged in the steam drum and the high-temperature gas channel. A plurality of fins are arranged on the outer wall of the heat pipe at one side in the high-temperature gas channel. Any heat pipe is perpendicular to the drum wall when entering the drum through the drum wall. An ash blowing pipe is arranged in the high-temperature gas channel. The invention has the advantages of high wall surface temperature contacted with high-temperature gas, good heat exchange effect, compact structure and the like.
Description
Technical Field
The invention relates to a heat exchanger and a heat exchange system for heat exchange of a steam drum and high-temperature gas, in particular to a heat pipe heat exchanger and a heat exchange system for heat exchange of the steam drum and high-temperature gasification gas containing tar and dust, and belongs to the field of heat exchange.
Background
In the high-temperature gas waste heat utilization process, heat exchange is often realized through a waste heat boiler or a heat exchanger such as an economizer, a superheater and the like arranged in a flue gas channel. However, in the biomass and large-sized pulverized coal furnace combined power generation system, the biomass is often not directly put into the large-sized pulverized coal furnace for combustion because the biomass has the characteristics of more moisture content, high volatile matter, small fuel density, loose structure and the like. In addition, alkali metals such as potassium (K), sodium (Na) and the like in biomass can reduce the ash melting point of fuel in the pulverized coal furnace, so that alkali metal corrosion of a high-temperature heating surface and the influence of ash with a low-temperature heating area on the normal operation of the pulverized coal furnace are easily caused. At the moment, biomass fuel is required to be gasified in advance, and then the gasified gas after dust removal is introduced into a pulverized coal furnace to be combusted together with pulverized coal. In the process, the high-temperature gasification gas needs to be subjected to heat exchange, temperature reduction and dust removal. At this time, the heat exchange component for utilizing waste heat generally needs a special medium to ensure a higher wall temperature, so that tar precipitation is avoided, and meanwhile, a biomass gasification system becomes huge and complex and gasification gas leakage is easy to cause.
Disclosure of Invention
The invention aims to provide a heat exchanger and a heat exchange system which can be used for heat exchange of a steam drum and high-temperature gas, in particular to heat exchange of high-temperature gasification gas.
The invention is realized by the following technical scheme:
A heat exchanger for heat exchange of a drum and a high temperature gas, the heat exchanger being operable to transfer heat between the drum and the high temperature gas passage, the heat exchanger comprising a plurality of heat pipes; the two ends of the heat pipe are respectively arranged in the steam drum and the high-temperature gas channel; and a plurality of fins are arranged on the outer wall of one side of the heat pipe, which is positioned in the high-temperature gas channel.
In the above technical scheme, the plurality of heat pipes are respectively and independently arranged.
In the above technical scheme, any one of the heat pipes is perpendicular to the steam drum wall surface when penetrating through the steam drum wall surface and entering the steam drum.
In the above technical scheme, the high temperature gas channel is horizontally arranged, and the steam drum is arranged above the high temperature gas channel
In the technical scheme, the heat pipe comprises a superconducting heat pipe and a liquid working medium heat pipe; the liquid working medium of the liquid working medium heat pipe comprises water, acetone, methanol and ethanol.
In the technical scheme, the ash blowing pipe is arranged in the high-temperature gas channel. The ash blowing pipe is a steam ash blowing pipe.
A heat exchange system comprising a steam drum, a high temperature gas passage, and a heat exchanger for transferring heat between the steam drum and the high temperature gas passage, the heat exchanger comprising a plurality of heat pipes; the two ends of the heat pipe are respectively arranged in the steam drum and the high-temperature gas channel; and a plurality of fins are arranged on the outer wall of one side of the heat pipe, which is positioned in the high-temperature gas channel.
In the above technical scheme, the high-temperature gas channel is horizontally arranged, and the steam drum is arranged above the high-temperature gas channel.
In the technical scheme, the heat pipe comprises a superconducting heat pipe and a liquid working medium heat pipe; the liquid working medium of the liquid working medium heat pipe comprises water, acetone, methanol and ethanol; an ash blowing pipe is arranged in the high-temperature gas channel.
The invention has the following advantages and beneficial effects: the heat pipe heat exchanger is efficient, the heat exchange surface is reduced, meanwhile, tar in gasified gas can be prevented from being separated out, and the equipment can continuously and stably run; the heat exchange efficiency of the heat pipe is further improved by the arrangement of the fins.
Drawings
Fig. 1 is a schematic view of a heat exchanger for heat exchange between a drum and high temperature gas according to the present invention.
Fig. 2 is a schematic diagram of a cross-sectional layout of a heat exchanger for heat exchange between a drum and high temperature gas according to the present invention.
In the figure: 1-a steam drum; 2-high temperature gas channel; 3-a heat pipe; 4-fins; 5-ash blowing pipe; 6-ash bucket.
Detailed Description
The following describes the embodiments and working processes of the present invention with reference to the accompanying drawings.
The terms of directions such as up, down, left, right, front and rear in the present document are established based on the positional relationship shown in the drawings. The drawings are different, and the corresponding positional relationship may be changed, so that the scope of protection cannot be understood.
The heat exchanger for heat exchange of the steam drum and the high-temperature gas can be used for transferring heat between the steam drum 1 and the high-temperature gas channel 2, so that the high-temperature gas in the high-temperature gas channel 2, in particular, the heat of the high-temperature gasification gas is transferred to working medium water in the steam drum 1, and the water or the steam-water mixture in the steam drum 1 is heated to reach target steam parameters.
As shown in fig. 1, the high temperature gas passage 2 is horizontally arranged, the drum 1 is arranged above the high temperature gas passage 2, and the center line of the drum 1 is arranged in parallel with the center line of the high temperature gas passage 2. A heat exchanger for heat exchange of a steam drum and high-temperature gas comprises a plurality of heat pipes 3, and the plurality of heat pipes 3 are independently arranged. The two ends of any heat pipe 3 are respectively arranged in the steam drum 1 and the high-temperature gas channel 2, the heat pipe is heated by high-temperature gas in the high-temperature gas channel 2 to generate phase change, the phase change substance rises to enter the steam drum 1 to release heat when meeting low-temperature working medium to be subjected to phase change and then falls to enter the high-temperature gas channel 2 again, and the circulating heat exchange is formed. In order to further improve the heat exchange efficiency, the outer wall of the heat pipe 3 positioned at one side in the high-temperature gas channel 2 is provided with a plurality of fins 4, so that the heated area is increased.
The heat exchange system based on the heat exchanger comprises a steam drum 1, a high-temperature gas channel 2 and a heat exchanger for transferring heat between the steam drum and the high-temperature gas channel, wherein the heat exchanger comprises a plurality of heat pipes 3; the two ends of the heat pipe 3 are respectively arranged in the steam drum 1 and the high-temperature gas channel 2; the outer wall of one side of the heat pipe 3, which is positioned in the high-temperature gas channel 2, is provided with a plurality of fins 4.
The heat pipes 3 are preferably special-shaped heat pipes, and one end of any one heat pipe 3 is perpendicular to the wall surface of the steam drum when penetrating through the wall surface of the steam drum 1 and entering the steam drum. Similarly, the other end of any one of the heat pipes 3 passes through the wall surface of the high-temperature gas passage 2 perpendicularly to the wall surface of the high-temperature gas passage.
The heat pipe 3 comprises a superconducting heat pipe and a liquid working medium heat pipe; the liquid working medium of the liquid working medium heat pipe comprises water, acetone, methanol and ethanol.
High temperature gas, especially high temperature gasification gas from biomass gasification device, often has smoke dust, and is easy to cause ash accumulation on the heat pipe 3, especially the fins 4 of the heat pipe, so the ash blowing pipe 5 is arranged in the high temperature gas channel 2, and the ash blowing pipe 5 is preferably a steam ash blowing pipe in order to avoid bringing oxidant into gasification gas. Correspondingly, the downstream bottom of the high temperature gas channel 2 is provided with an ash bucket 6 for collecting and discharging the smoke dust.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A heat exchanger for heat exchange of a drum and a high temperature gas, which heat exchanger can be used for transferring heat between the drum (1) and a high temperature gas channel (2), said high temperature gas being a high temperature gas, characterized in that the heat exchanger comprises several heat pipes (3); two ends of the heat pipe (3) are respectively arranged in the steam drum (1) and the high-temperature gas channel (2); a plurality of fins (4) are arranged on the outer wall of one side of the heat pipe (3) positioned in the high-temperature gas channel (2); the heat pipes (3) are special-shaped heat pipes, and any one of the heat pipes (3) is perpendicular to the wall surface of the steam drum when penetrating through the wall surface of the steam drum (1) and entering the steam drum (1).
2. A heat exchanger for heat exchange of a drum and a high temperature gas according to claim 1, characterized in that the several heat pipes (3) are each arranged independently.
3. A heat exchanger for heat exchange of a drum and a high temperature gas according to claim 1, characterized in that the high temperature gas channel (2) is arranged horizontally, the drum (1) being arranged above the high temperature gas channel (2).
4. A heat exchanger for heat exchange of drums and high temperature gases according to claim 1, wherein the heat pipes (3) comprise superconducting heat pipes, liquid working medium heat pipes; the liquid working medium of the liquid working medium heat pipe comprises water, acetone, methanol and ethanol.
5. A heat exchanger for heat exchange between a drum and a high temperature gas according to claim 1, characterized in that a lance tube (5) is arranged in the high temperature gas channel (2).
6. A heat exchanger for heat exchange between a drum and a hot gas according to claim 5, characterized in that the lance tube (5) is a steam lance tube.
7. A heat exchange system, characterized in that the heat exchange system comprises a steam drum (1), a high-temperature gas channel (2) and a heat exchanger for transferring heat between the steam drum (1) and the high-temperature gas channel (2), wherein the heat exchanger comprises a plurality of heat pipes (3); two ends of the heat pipe (3) are respectively arranged in the steam drum (1) and the high-temperature gas channel (2); the heat pipes (3) are special-shaped heat pipes, and any one of the heat pipes (3) is perpendicular to the wall surface of the steam drum when penetrating through the wall surface of the steam drum (1) and entering the steam drum (1); the outer wall of one side of the heat pipe (3) positioned in the high-temperature gas channel (2) is provided with a plurality of fins (4).
8. A heat exchange system according to claim 7, wherein the hot gas path (2) is arranged horizontally and the steam drum (1) is arranged above the hot gas path (2).
9. A heat exchange system according to claim 7, wherein the heat pipe (3) comprises a superconducting heat pipe, a liquid working fluid heat pipe; the liquid working medium of the liquid working medium heat pipe comprises water, acetone, methanol and ethanol; an ash blowing pipe (5) is arranged in the high-temperature gas channel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810301986.4A CN108469192B (en) | 2018-04-04 | 2018-04-04 | Heat exchanger and heat exchange system for heat exchange between steam drum and high-temperature gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810301986.4A CN108469192B (en) | 2018-04-04 | 2018-04-04 | Heat exchanger and heat exchange system for heat exchange between steam drum and high-temperature gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108469192A CN108469192A (en) | 2018-08-31 |
| CN108469192B true CN108469192B (en) | 2024-06-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810301986.4A Active CN108469192B (en) | 2018-04-04 | 2018-04-04 | Heat exchanger and heat exchange system for heat exchange between steam drum and high-temperature gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108469192B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3915224A (en) * | 1973-06-22 | 1975-10-28 | Uhde Gmbh Friedrich | Process gas cooler |
| US4206807A (en) * | 1977-01-31 | 1980-06-10 | The Furukawa Electric Company Ltd. | Cylindrical heat exchanger using heat pipes |
| CN2802297Y (en) * | 2005-02-04 | 2006-08-02 | 大连理工大学 | Incinerator for waste liquid |
| CN201811623U (en) * | 2010-10-14 | 2011-04-27 | 中国石油化工股份有限公司 | Combined heat pipe exchanger |
| CN103267300A (en) * | 2013-05-26 | 2013-08-28 | 刘成红 | Semi-buried type heat pipe waste heat recovering device |
| CN105277027A (en) * | 2015-11-05 | 2016-01-27 | 吉林省电力科学研究院有限公司 | Phase-change heat exchanger and heat exchange method thereof |
| CN205191619U (en) * | 2015-12-02 | 2016-04-27 | 北京能为科技股份有限公司 | Heat -pipe heat exchanger |
| CN205783036U (en) * | 2016-06-21 | 2016-12-07 | 南通亚泰工程技术有限公司 | A kind of power-plant flue gas system heat-exchanger rig |
| CN208313097U (en) * | 2018-04-04 | 2019-01-01 | 北京巴布科克·威尔科克斯有限公司 | A kind of heat exchanger and heat-exchange system to exchange heat for drum and high-temperature gas |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9310138B2 (en) * | 2012-09-13 | 2016-04-12 | International Business Machines Corporation | Cooling system for high performance solar concentrators |
-
2018
- 2018-04-04 CN CN201810301986.4A patent/CN108469192B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3915224A (en) * | 1973-06-22 | 1975-10-28 | Uhde Gmbh Friedrich | Process gas cooler |
| US4206807A (en) * | 1977-01-31 | 1980-06-10 | The Furukawa Electric Company Ltd. | Cylindrical heat exchanger using heat pipes |
| CN2802297Y (en) * | 2005-02-04 | 2006-08-02 | 大连理工大学 | Incinerator for waste liquid |
| CN201811623U (en) * | 2010-10-14 | 2011-04-27 | 中国石油化工股份有限公司 | Combined heat pipe exchanger |
| CN103267300A (en) * | 2013-05-26 | 2013-08-28 | 刘成红 | Semi-buried type heat pipe waste heat recovering device |
| CN105277027A (en) * | 2015-11-05 | 2016-01-27 | 吉林省电力科学研究院有限公司 | Phase-change heat exchanger and heat exchange method thereof |
| CN205191619U (en) * | 2015-12-02 | 2016-04-27 | 北京能为科技股份有限公司 | Heat -pipe heat exchanger |
| CN205783036U (en) * | 2016-06-21 | 2016-12-07 | 南通亚泰工程技术有限公司 | A kind of power-plant flue gas system heat-exchanger rig |
| CN208313097U (en) * | 2018-04-04 | 2019-01-01 | 北京巴布科克·威尔科克斯有限公司 | A kind of heat exchanger and heat-exchange system to exchange heat for drum and high-temperature gas |
Non-Patent Citations (1)
| Title |
|---|
| 热管余热回收蒸汽发生系统在烧结环冷机上的应用;罗敏华;毛国高;章国平;;节能与环保;20051228(第12期);全文 * |
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| Publication number | Publication date |
|---|---|
| CN108469192A (en) | 2018-08-31 |
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