CN103242866B - Heat recovery device for raw coke oven gas - Google Patents
Heat recovery device for raw coke oven gas Download PDFInfo
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- CN103242866B CN103242866B CN201310184957.1A CN201310184957A CN103242866B CN 103242866 B CN103242866 B CN 103242866B CN 201310184957 A CN201310184957 A CN 201310184957A CN 103242866 B CN103242866 B CN 103242866B
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- Prior art keywords
- heat
- pipeline
- drum
- interchanger
- pipe
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Links
- 239000000571 coke Substances 0.000 title abstract description 15
- 238000011084 recovery Methods 0.000 title abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 23
- 238000001816 cooling Methods 0.000 claims description 10
- 239000003245 coal Substances 0.000 claims description 8
- 238000012546 transfer Methods 0.000 claims description 6
- 238000004939 coking Methods 0.000 abstract description 12
- 239000007921 spray Substances 0.000 abstract description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 4
- 229910021529 ammonia Inorganic materials 0.000 abstract 2
- 230000001174 ascending effect Effects 0.000 abstract 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 33
- 238000000034 method Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 241000628997 Flos Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to the field of coking, and particularly relates to a heat recovery device of a raw coke oven gas. The heat recovery device comprises an H-shaped crossover main serving as a main body of the device, a heat exchanger, a steam pocket, a steam pipe and a water inlet pipe, wherein the heat exchanger cools the raw coke oven gas and transmits heat energy to the steam pocket; the steam pocket heats a heat exchange medium by utilizing the heat energy transferred by the heat exchanger, so as to become steam to be discharged; the steam pipe is a pipeline for discharging the steam in the steam pocket; the water inlet pipe inputs the heat exchange medium to the steam pocket; the lower part of one pipeline of the crossover main is connected with a coke oven ascending pipe; the heat exchanger is arranged inside the other pipeline; the steam pocket is arranged at the upper part of the pipeline; an upper ammonia spray head is arranged on a transverse connecting pipeline of the crossover main; a lower ammonia spray head is arranged at the lower part of the pipeline on which the heat exchanger is located; a safety valve is arranged on the steam pocket; and the heat exchanger is a vacuum heat-conducting tube. The heat recovery of the heat recovery device is carried out at the descending stage of airflow; the problem of blocking of the ascending pipe is solved; cleanness of the heat exchanger can be finished; each crossover main is an independent unit and is convenient to dismantle and overhaul; the vacuum heat-conducting pipe is utilized; and the heat energy is transmitted to the heat exchange medium in a one way. Thus, the heat recovery device is simple in structure and low in construction cost.
Description
Technical field
The present invention relates to coking field, particularly relate to a kind of coal oven dithio-gas heat-energy recovering apparatus.
Background technology
Raw gas, separate out in dry distillation of coal process not yet through the gaseous product of purifying treatment.
Since coke enterprise uses coking chamber method to fire coke, in upcast, the waste heat of high temperature coke oven raw gas just fails effectively to utilize always, with cyclic ammonia water cooling, heat can only be wasted.Someone is by the processing medium water heat exchange in raw gas and chuck, but occurs heat-transfer surface bonding tar, floss blockage problem, and after heat-transfer surface damages, in chuck, processing medium water leaks and affects coke production into coking chamber.In recent years, hot pipe technique and thermal oil technology is adopted to carry out waste heat of coke oven crude gas utilization, all can not long-period stable operation, major cause is: these technology all do not overcome the difficulty of coke-oven gas heat exchange, when heat-exchange system other parts fault quits work, coking chamber method, an oven coke has not been produced, can not blowing out within the short period of time of midway, so there is the problem such as heat pipe booster, the overheated coking of thermal oil.Be described in detail in one section of " waste heat recovery of coking raw gas is shouldered heavy responsibilities " article write by Feng Hengfu that these present situations are published on September 14th, 2010 " China Metalurgy ", this article comprises the content of three parts altogether: one is the necessity of coking raw gas UTILIZATION OF VESIDUAL HEAT IN; Two is China's coking raw gas UTILIZATION OF VESIDUAL HEAT IN processes; Three is the research and development accelerating coking raw gas heat recovery technology.This article emphasizes at the ending paragragh of the second part: " coking raw gas heat recovery technology is at China's research progress of nearly 30 years; its material, structure can not meet field working conditions requirement; the efficiency low life-span is short; gordian technique does not break through, and there is no maturation, reliable, stable large industrial applications example so far ".
The design of existing raw gas heat-energy recovering apparatus, all make an issue of on upcast, transducing head is installed, use heat exchange medium, absorb the heat being in the hot raw gas of propradation, do the temperature that will certainly reduce raw gas like this, cause the condensation of the heavy constituents such as the contained tar in the inside, thus cause upcast to block.So existing upcast energy recovery technology, all fail to realize industrial applications completely.
Summary of the invention
(1) technical problem that will solve
The present invention mainly solves the safety problems such as the heat pipe blast in the blockage problem of upcast and energy recovery process.
(2) technical scheme
The present invention includes bridge tube, the main body of this device, is H type; Interchanger, cools raw gas and gives drum heat transfer; Drum, the energy heats heat transferring medium utilizing interchanger to transmit, makes it to become steam and discharges; Water inlet pipe, to drum input heat transferring medium; Vapour pipe, the pipeline that drum inner vapor is discharged.
Wherein, a pipeline bottom of bridge tube connects the upcast of raw gas, and another pipe interior has interchanger, and drum is installed on top.
Wherein, drum there is safety valve, guarantee the trouble-free service of drum.
Wherein, bridge tube intermediate lateral connecting tube there is upper ammoniacal liquor sprinkler head, cooling raw gas, the tube bank of clean bridge tube lateral connection pipeline and interchanger.
Wherein, ammoniacal liquor sprinkler head 9 under the pipeline bottom at interchanger 8 place is installed, is cooled through the raw gas of interchanger cooling, ensures technic index.
Wherein, interchanger is use vacuum heat conduction pipe as the interchanger of heat exchange element.
Wherein, multiple coal oven dithio-gas heat-energy recovering apparatus composes in parallel heat-exchange system.
(3) beneficial effect
Energy recovery of the present invention is carried out in the downcomer of air-flow, solves the upcast blockage problem in current energy recovery; The tar etc. of condensation on heat-exchanger rig, can fall in effuser in the effect of deadweight, coordinate the sprinkling of cyclic ammonia water, and can complete the clean of heat-exchanger rig, the tar after washing, coal dust enter into effuser automatically; After heat-exchanger rig breakage, medium can flow in effuser, can not damage coking furnace shaft; Each bridge tube is individual independently heat exchange unit, and for convenience detach, maintenance is convenient; Multiple heat exchange unit forms stable system, can run by long period safety and steady; Use vacuum heat conduction pipe, protection heat energy unidirectional delivery is to heat transferring medium, and structure is simple, cheap, only changes bridge tube and just can complete transformation, easily on existing coke oven, realize transformation.
Accompanying drawing explanation
Fig. 1 is traditional bridge tube schematic diagram.
Fig. 2 is bridge tube schematic diagram of the present invention.
Fig. 3 is embodiment of the present invention structure iron.
In figure, 1: upcast; 2: bridge tube; 3: upper ammoniacal liquor sprinkler head; 4: safety valve; 5: drum; 6: vapour pipe; 7: water inlet pipe; 8: interchanger; 9: lower ammoniacal liquor sprinkler head.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
In describing the invention, it should be noted that, term " on ", the orientation of the instruction such as D score, "left", "right" or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, particular case above-mentioned term concrete meaning in the present invention can be understood.
As shown in Figure 3, the present invention includes bridge tube 2, the main body of this device, is H type; Interchanger 8, cooling raw gas and heat transfer to drum 5; Drum 5, utilizes the energy heats heat transferring medium that interchanger 8 transmits, and makes it to become steam and discharges; Water inlet pipe 7, inputs heat transferring medium to drum 5; Vapour pipe 6, the pipeline that drum 5 inner vapor is discharged.
Wherein, a pipeline bottom of bridge tube 2 connects the upcast 1 of raw gas, and another pipe interior has interchanger 8, and drum 5 is installed on top.
Fig. 1 is traditional H type bridge tube pattern, Fig. 2 is the novel H type bridge tube that the present invention designs, the feature of novel H type bridge tube is the air descend section place at bridge tube, is provided with certain installing space (square frame in left side goes out as shown in Figure 2), can installs applicable heat-exchanger rig; The ammoniacal liquor sprinkler head of bridge tube divides upstream and downstream (relative to air current flow direction) to arrange, namely ammoniacal liquor sprinkler head 3 on the upstream of heat-exchanger rig has, has lower ammoniacal liquor sprinkler head 9 in the downstream of heat-exchanger rig.
Bridge tube 2, for reducing air resistance, the under a gas flow section of falling, can be taked variable diameter design, namely have heat-exchanger rig section, and the diameter of design wants large, and to bell and spigot, place becomes normal size.
Connection transverse tube between bridge tube 2 can be vertical connection with the pipeline at two ends, also can be into other angles and connect.
Be preferred embodiment connect transverse tube angled connection, and interchanger 8 place pipeline be connected the junction of transverse tube lower than another pipeline of bridge tube and the junction being connected transverse tube.
After heat exchange, the temperature of raw gas reduces, and may have part and be cooled to liquid or solid, the liquid or solid that such structure can effectively prevent raw gas from producing after heat exchange flows back in coke oven.
Wherein, interchanger 8 is arranged in the coal gas decline side of H type bridge tube 2, and interface size is consistent with original system, to facilitate the access with original upcast, newly founds the factory and can redesign.
Wherein, interchanger 8 can at right angle setting in pipeline, also can sidewall be installed at level.
Wherein, interchanger 8 can adopt vacuum heat-conduction tube heat-exchanger, also can with using the tubular heat exchanger such as bayonet tube or U-tube.
Be preferred embodiment that interchanger 8 is use vacuum heat conduction pipe as the interchanger of heat exchange element.
Wherein, interchanger 8, drum 5, vapour pipe 6, water-supply pipe 7 composition energy recovery unit jointly.
Wherein, the upcast bridge tube of every hole coke oven is as an energy recovery unit, and multiple unit composes in parallel heat-exchange system.
Effect that vacuum heat conduction pipe has " thermoswitch ", can stop heat to transmit from high to low.So, when a certain unit is in cyclic ammonia water sprinkling cleaning heat-exchanging tube bundle, tube bank temperature is low, vacuum heat conduction pipe can not conducting, the drum of this unit, owing to being connected in parallel in system, is in high temperature, but due to the single-phase transmission effect of vacuum heat conduction pipe, drum can not to lower end transferring heat, so can not cause the thermosteresis of system.
Whole heat-exchange system is under rational procedure arrangement, and some unit are in heat exchange state, and what have is in cleaning state, and what have is in service mode, and system can keep the working order of stable equilibrium all the time.Produce saturation steam to may be used for producing or drive hot screw pump generating.
Wherein, drum 5 is provided with safety valve 4, guarantees the trouble-free service of drum 5.
Time vapour pipe 6 has little time to discharge when the steam in drum 5 is too much, can be discharged by safety valve 4, prevent drum 5 from exploding.
Heat transferring medium in drum 5 can be water, also can be other media of heat conduction wet goods.
Be preferred embodiment that bridge tube 2 intermediate lateral connecting tube has upper ammoniacal liquor sprinkler head 3, cooling raw gas, clean bridge tube 2 lateral connection pipeline.
Upper ammoniacal liquor sprinkler head 3 accesses cyclic ammonia water, and the horizontal gas flue of heat exchanger 8 and bridge tube 2 carries out regular cleaning work, to ensure the clean of channels open and interchanger 8 outer wall, keeps high heat transfer efficiency; And when heat exchange unit keeps in repair, raw gas is tentatively cooled, to ensure rational processing parameter.
Be preferred embodiment, ammoniacal liquor sprinkler head 9 under the pipeline bottom at interchanger 8 place is installed.
Under heat-exchanger rig normal operation, be cooled through the raw gas of heat-exchanger rig cooling, ensure normal process index.
When heat-exchanger rig is stopped using, the ammoniacal liquor sprinkler head 3 of cooperation upstream completes the cooling to raw gas jointly, ensures normal process index.So lower ammoniacal liquor sprinkler head 9 is lasting uninterrupted dutys.
Ammoniacal liquor sprinkler head can arrange number in different positions increase as required, with the needs of satisfied cleaning heat-exchanger rig and cooling.
The raw gas of high temperature is after coke furnace carbonization chamber overflows, bridge tube 2 is entered into through upcast 1, now go up ammoniacal liquor sprinkler head 3 not need to spray ammoniacal liquor, after the raw gas approach interchanger 8 of high temperature, heat is absorbed, be delivered to drum 5, heat can make the heat transferring medium in drum 5 evaporate, and produce steam, steam is exported by vapour pipe 6 again, when the heat transferring medium in drum 5 is not enough, water-supply pipe 7 supplements heat transferring medium in time drum 5.Raw gas after heat exchange continues to decline, and is reduced the temperature to less than 80 DEG C further by the vaporific ammoniacal liquor that lower ammoniacal liquor sprinkler head 9 sprays, and to be entered coke oven collecting main by valve body.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (3)
1. a coal oven dithio-gas heat-energy recovering apparatus, is characterized in that: comprise,
Bridge tube (2), the main body of this device is H type;
Interchanger (8), uses vacuum heat conduction pipe as heat exchange element, cools raw gas and give drum (5) heat transfer;
Drum (5), the energy heats heat transferring medium utilizing interchanger to transmit, makes it to become steam and discharges;
Vapour pipe (6), the pipeline that drum inner vapor is discharged; Water inlet pipe (7), to drum input heat transferring medium;
A pipeline bottom of described bridge tube (2) connects the upcast (1) of raw gas, and another pipe interior has interchanger (8), and drum (5) is installed on top;
Described bridge tube (2) intermediate lateral connecting tube there is upper ammoniacal liquor sprinkler head (3), for cooling raw gas, the tube bank of clean bridge tube (2) lateral connection pipeline and interchanger, ammoniacal liquor sprinkler head (9) under the pipeline bottom at described interchanger (8) place is installed, for being cooled through the raw gas of interchanger cooling, ensure technic index.
2. coal oven dithio-gas heat-energy recovering apparatus according to claim 1, is characterized in that: described drum (5) has safety valve (4), guarantees the trouble-free service of drum (5).
3. coal oven dithio-gas heat-energy recovering apparatus according to claim 1, is characterized in that: multiple described coal oven dithio-gas heat-energy recovering apparatus composes in parallel heat-exchange system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310184957.1A CN103242866B (en) | 2013-05-17 | 2013-05-17 | Heat recovery device for raw coke oven gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310184957.1A CN103242866B (en) | 2013-05-17 | 2013-05-17 | Heat recovery device for raw coke oven gas |
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| Publication Number | Publication Date |
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| CN103242866A CN103242866A (en) | 2013-08-14 |
| CN103242866B true CN103242866B (en) | 2015-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310184957.1A Expired - Fee Related CN103242866B (en) | 2013-05-17 | 2013-05-17 | Heat recovery device for raw coke oven gas |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104073268A (en) * | 2014-07-11 | 2014-10-01 | 上海理工大学 | Coking-preventing raw coke oven gas waste heat recycling device for heat-conduction oil coke oven |
| CN104726110A (en) * | 2015-03-26 | 2015-06-24 | 常州江南冶金科技有限公司 | Coke oven three-way bridge pipeline heat exchanger device |
| CN110094714B (en) * | 2019-04-09 | 2023-11-28 | 华电电力科学研究院有限公司 | Cooling device convenient to detach and used for power plant boiler and working method of cooling device |
| CN110499170B (en) * | 2019-09-26 | 2021-05-14 | 攀钢集团攀枝花钢铁研究院有限公司 | Coke oven raw gas sensible heat recovery device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5876487A (en) * | 1981-11-02 | 1983-05-09 | Nippon Steel Chem Co Ltd | Method and apparatus for recovering sensible heat of coke oven gas |
| CN101614498A (en) * | 2008-06-26 | 2009-12-30 | 上海梅山钢铁股份有限公司 | Raw coke over gas riser residual heat recovery device |
| CN101619848A (en) * | 2008-06-30 | 2010-01-06 | 上海梅山钢铁股份有限公司 | System and method for recovering waste heat of coke-oven crude gas |
| CN102786953A (en) * | 2012-08-31 | 2012-11-21 | 上海宝钢节能技术有限公司 | Coke oven grouped novel bridge pipe crude gas waste heat recovery device |
| CN102796537A (en) * | 2012-08-31 | 2012-11-28 | 上海宝钢节能技术有限公司 | System and method for recovering superheated steam of waste heat of raw gas of combined coke oven |
| CN102816573A (en) * | 2012-08-31 | 2012-12-12 | 上海宝钢节能技术有限公司 | Coke-oven single novel bridge pipe raw gas waste-heat recovery device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201246986Y (en) * | 2008-07-28 | 2009-05-27 | 济南市华润节能环保设备厂 | Composite type vacuum heat pipe exchanger |
-
2013
- 2013-05-17 CN CN201310184957.1A patent/CN103242866B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5876487A (en) * | 1981-11-02 | 1983-05-09 | Nippon Steel Chem Co Ltd | Method and apparatus for recovering sensible heat of coke oven gas |
| CN101614498A (en) * | 2008-06-26 | 2009-12-30 | 上海梅山钢铁股份有限公司 | Raw coke over gas riser residual heat recovery device |
| CN101619848A (en) * | 2008-06-30 | 2010-01-06 | 上海梅山钢铁股份有限公司 | System and method for recovering waste heat of coke-oven crude gas |
| CN102786953A (en) * | 2012-08-31 | 2012-11-21 | 上海宝钢节能技术有限公司 | Coke oven grouped novel bridge pipe crude gas waste heat recovery device |
| CN102796537A (en) * | 2012-08-31 | 2012-11-28 | 上海宝钢节能技术有限公司 | System and method for recovering superheated steam of waste heat of raw gas of combined coke oven |
| CN102816573A (en) * | 2012-08-31 | 2012-12-12 | 上海宝钢节能技术有限公司 | Coke-oven single novel bridge pipe raw gas waste-heat recovery device |
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