CN1050602A - Reheating waste gas boiler - Google Patents
Reheating waste gas boiler Download PDFInfo
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- CN1050602A CN1050602A CN 89107554 CN89107554A CN1050602A CN 1050602 A CN1050602 A CN 1050602A CN 89107554 CN89107554 CN 89107554 CN 89107554 A CN89107554 A CN 89107554A CN 1050602 A CN1050602 A CN 1050602A
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- superheater
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Abstract
A kind of reheating waste gas boiler.Wherein what superheater and reheater be divided into.High temperature superheater and high temperature reheater are arranged on the upstream section of exhaust gas flow direction abreast, and a low-temperature reheater is installed in the downstream of high temperature superheater.A low temperature superheater then is installed in the downstream of high temperature reheater.High temperature superheater has identical heat-transfer tube external diameter with high temperature reheater and low temperature superheater respectively with low-temperature reheater, and is identical in the pipe distance of airway width.Pipe distance in exhaust gas flow direction is identical.Pipe row number in exhaust gas flow direction is also identical.
Description
The invention relates to a kind of exhaust boiler of pattern of fever again.Its superheater and reheater are installed on the upstream section of the exhaust gas flow direction of exhaust boiler main body abreast.
Exhaust boiler is that people have the knack of very much.It is used for reclaiming from various thermals source.As the heat in the waste gas that kind equipment discharged out of gas turbine, internal combustion engine, cement incinerator.At Japan Patent NO.61-186702(1986) in what announced is exactly an example of this exhaust boiler.
In these exhaust boilers in the past.The upstream section horizontal line of the exhaust gas flow direction of boiler body 101 two cover secondary superheater 102 and secondary reheaters 103 are installed.Waste gas along continuous straight runs flow through these superheaters and reheater.As shown in Figure 3 and Figure 4.Downstream direction with respect to corresponding secondary superheater has all correspondingly been adorned single reheat device 104.And superheater 105 all correspondingly is housed one time with respect to the downstream direction of corresponding secondary reheater 103.Simultaneously, in the downstream of the airflow direction of these devices.Width along airway has also been installed high-pressure carburetor 106.
Downstream direction at this high-pressure carburetor 106 is equipped with a high pressure economizer 107.And, and then 108, one low pressure carburetors 109 of a low-pressure superheater and a low pressure economizer 110 have been installed at the downstream direction of this high pressure economizer 107.
In addition, a high pressure drum 111 and a low-pressure drum 112 are installed above exhaust boiler main body 101.
That high pressure drum 111 is connected with the outlet of high pressure economizer 107.And the lower header 106a with high-pressure carburetor 106 is connected by lower linking tube 113.In addition, the last header 106b of high pressure fluidisation device 106 is connected with high pressure drum 111 by upper connecting tube 114 again.Also have, the vaporium of high pressure drum 111 partly is connected with the admission of a superheater 105 by a steam pipe 115.
Low-pressure drum 112 is connected with the outlet of low pressure economizer 110, and is connected with the lower header 109a of low pressure carburetor 109 by a lower linking tube 116.In addition, the last header 109b of low pressure carburetor 109 is connected with low-pressure drum 112 by a upper connecting tube 117.Moreover low-pressure drum 112 links to each other with the water inlet end of high pressure economizer 107 by a upper hose 119.Supply water by a charging pump 118.In addition, the vaporium of low-pressure drum 112 partly is connected with the admission of low-pressure superheater 108 by a steam pipe 120.
In addition, the air intake of single reheat device 104 will link to each other with a pipe with the steam turbine that do not show on the figure.This is the steam that returns that does not do work in the steam turbines in order to be introduced in.The outlet of single reheat device 104 is connected with secondary reheater 103 by the pipe that does not show on the chromosome.Equally, the outlet of a superheater 105 also is connected with secondary superheater 102 by the pipe that does not show on the chromosome.Simultaneously, between these superheaters and reheater, also some partition walls 121 to be set abreast.
To point out that also the centre that these tube connectors of being said claim also disposes the steam cooling device in the above.Control the temperature of steam by water spray, injection or other similar approach.
The operational circumstances of above-mentioned once exhaust boiler in the past is described now.
The intake section of the waste gas inflow exhaust gas boiler body 101 that ejects from thermal source.Then during this period.Waste gas flows to low pressure economizer 110 1 ends from secondary superheater 102 and secondary reheater 103 1 ends.In the heat-transfer tube of each related device.The fluid that flows carries out heat exchange.It just spills out from the port of export of exhaust boiler main body 101 after EGT reduces.
On the other hand, by a condensate pump (not showing on the figure) make-up water (condensed water) is sent in the low pressure economizer 110.In economizer, heated by waste gas.Then, heated make-up water is sent into the low-pressure steam bag 112 from low pressure economizer 110 again.A part of make-up water in the low-pressure drum 112 is sent in the low pressure carburetor 109 by falling adapter 116.In this low pressure carburetor 109, heated, become the fluid that vapour/water mixes, and turn back in the low-pressure drum 112 by upper connecting tube 117 by waste gas.
This a part of vapour-water fluid-mixing that turns back in the low-pressure drum 112 is divided into steam and water two parts.By steam pipe 120 steam is sent in the low-pressure superheater 108, made steam superheating here.
On the other hand.The other part of make-up water flows to pressurized later the sending in the high pressure economizer 107 in charging pump 118 places by upper hose 119 in the low-pressure drum 112.Then, the make-up water in high pressure economizer 107 is heated by waste gas.Be admitted to then in the high pressure drum 111.A part of make-up water of sending in the high pressure drum 111 is sent in the high-pressure carburetor 106 by lower linking tube 113, is here heated by waste gas.Become the fluid-mixing of steam and water.And get back in the high pressure drum 111 by upper connecting tube 114.
Fluid-mixing is separated into steam and water in high pressure drum 111.Steam is admitted in superheater 105 by steam pipe 115.In this superheater 105, made it overheated by the waste gas heating.Then, superheated steam is sent in the steam cooling device by the top connecting line of saying.In this heat sink, the temperature of steam is controlled to predetermined temperature and just be admitted to later in the secondary superheater 102, in this secondary superheater 102, form the steam of HTHP.And be admitted in the steam turbines.
The steam of in steam turbines, doing merit turn back to single reheat device 104 again and in this single reheat device 104, carry out overheated.Then, superheated steam is delivered in the steam cooling device, made vapor (steam) temperature be controlled at predetermined temperature by the top connecting line of saying.Then be admitted to carry out once more in the secondary reheater 103 overheated.
In having the exhaust boiler of reheater, in order from waste gas, to reclaim heat effectively.Generally all wish to dispose like this superheater and reheater.Their outlets are all remained under the identical condition with the EGT of porch and the vapor (steam) temperature of outlet and porch.
Like this, in exhaust boiler in the past.Superheater and reheater to be divided into as mentioned above once with secondary, secondary superheater 102 is arranged in parallel with secondary reheater 103.Downstream in the exhaust gas flow direction of secondary superheater 102 is equipped with once hot once more device 104.And superheater 105 is installed one time in the downstream of the exhaust gas flow direction of secondary reheater 103.No. one time superheater 105 is interconnected with secondary superheater 102; Also be interconnected between single reheat device 104 and the secondary reheater 103.By between corresponding superheater and corresponding reheater, parallel partition wall 121 being set, the passage of waste gas is separated.And exhaust-gas flow is led so that form suitable air-flow.Like this, the EGT in superheater 105 and the downstream of single reheat device 104 will become basic identical.
But, this reheating waste gas boiler in the past has a problem.That is exactly, owing to be provided with parallel partition wall between superheater and reheater.Be used for exhaust steam passage is separated, make the structure of exhaust boiler become complicated.
Therefore, one object of the present invention to provide exactly a kind of improved reheating waste gas boiler it can avoid the existing above-mentioned shortcoming of exhaust boiler in the past.
A more concrete purpose of the present invention is exactly that a kind of simple in structure, reheating waste gas boiler that can more effectively reclaim heat in the waste gas will be provided.
Characteristics according to the present invention can provide a kind of reheating waste gas boiler.In this boiler, superheater and reheater are to be installed in abreast on the upstream section of off-gas flows flow direction of exhaust boiler main body.In this boiler, what superheater and reheater be divided into respectively.The superheater of high temperature and the reheater of high temperature are installed on the upstream section of exhaust gas flow direction abreast.At the superheater downstream direction of high temperature the reheater of low temperature is installed, and a described superheater of low temperature is installed in the downstream of high temperature reheater.Like this, high temperature superheater just can have identical heat-transfer tube external diameter with high temperature reheater, has corresponding to pipe distance on the width of airway.Has identical pipe distance in exhaust gas flow direction.On exhaust gas flow direction, have identical pipe row number, and the superheater of the reheater of low temperature and low temperature also can have identical heat conduction external diameter.On the airway width, has consistent pipe distance.On exhaust gas flow direction, has identical pipe distance.On exhaust gas flow direction, has identical pipe row number.
After the way of having been said above having adopted, because the superheater of high temperature and the reheater of high temperature are arranged in parallel.The superheater of low temperature and the reheater of low temperature also are arranged in parallel.Their such structures just can make its heat-transfer tube external diameter.Pipe distance on the airway width.Just all consistent with each other in distance of the pipe on the exhaust gas flow direction and the row of the pipe on exhaust gas flow direction number.Situation that exhaust gas pressure falls and condition are also consistent.Therefore, also just there is no need to be provided with the passage that partition wall is separated waste gas.
Above-mentioned purpose of the present invention and other purposes, characteristics of the present invention and advantage.When the embodiment of a recommendation being described, will become more obvious according to accompanying drawing.
In the accompanying drawings:
Shown in Figure 1 is the planar system figure of a preferred embodiment of reheating waste gas boiler of the present invention;
Shown in Figure 2 is the side-looking system diagram of same exhaust boiler;
Shown in Figure 3 is the planar system figure of example reheating waste gas boiler in the past;
The figure of system of side-looking system of demonstration shown in Figure 4 reheating waste gas boiler in the past.
Below with reference to Fig. 1 and Fig. 2 a preferred embodiment of the present invention is described in detail.
In Fig. 1 and Fig. 2, have No. three superheaters 2 and secondary reheater 3 be arranged in abreast exhaust boiler main body 1 along on the upstream section of exhaust gas flow direction, waste gas with horizontal direction by the exhaust boiler main body.In addition, at the downstream direction of No. three superheaters 2 a single reheat device 5 has been installed.And a secondary superheater 4 has been installed at the downstream direction of secondary reheater 3.In the downstream again of these devices a superheater 6 is installed then, it stretches to the whole width of airway.
At the downstream direction of a superheater 6 high-pressure carburetor 7 is installed according to priority.Press in 8, one of high pressure economizers to press in 9, one in the superheater in 10, one in the vaporizer and press 11, one low pressure economizers 12 of economizer and a low pressure economizer 13.
On the other hand, low 15, one low-pressure drums 16 of drum and a vapourizer 17 in 14, one of the high pressure drums are being installed above the exhaust boiler main body 1.
By a condensate pump of scheming and not showing make-up water (condensed water) is sent in the low pressure economizer 13 by pipeline 36, and be admitted in the deaerator 17 by pipeline 20.Carry out degasification with steam.The used vapours of degasification is to attract non-by low-pressure drum 16 theres.A part of low-pressure steam in this low-pressure drum 16 is admitted in the low-pressure steam turbine (not showing on the figure) by pipeline 37.This low-pressure drum 16 also is used as a water tank of deaerator 17.
On the other hand, another part water in the low-pressure drum 16 will be delivered to by pipeline 24 and press feed pump 25 and high pressure water pump 30 theres in one.
Enter middle the pressure in the economizer 11 by the later make-up water of middle pressure feed pump 25 pressurizations by pipeline 26.Just press in the drum 15 in sending into by a pipe 19 after water here is heated and go.
During sending into by pipeline 27, the steam that is produced in middle pressure vaporizer 10 presses in the superheater 9.And then enter among the single reheat device 5 by pipeline 29.In this case, owing to the waste vapour of sending back from high pressure turbine machine (not showing on the figure) (steam) is sent into the single reheat device 5.Therefore, the middle pressure steam of sending here from pipeline 29 will mix with exhaust steam from high pressure turbine mutually in the upstream portion of single reheat device 5, and then enter in the single reheat device 5.
In addition, steam is sent in the secondary reheater 3 by pipeline 22.After being heated, be admitted to again in the intermediate pressure turbine machine.In this case, in case of necessity can be at the steam cooling device that a water-spraying type or kindred type are installed of pipeline 22 midway, thus temperature that can steam regulation.
Then, the make-up water that pressurizes through high pressure water pump 30 enters in the high pressure economizer 8 by pipeline 31, just sends in the high pressure drum 14 by pipeline 18 after water is heated.
The steam that is produced in high-pressure carburetor 7 is sent in superheater 6 by pipeline 32.After here being heated, send in the secondary superheater 4 by pipeline 23 again.After here being heated, enter in No. three superheaters 2 by pipeline 21 again.The steam that comes out from No. three superheaters 2 just is admitted to the high pressure turbine machine (not showing on the figure).
In this case, if necessary can be at the steam cooling device that a water-spraying type or kindred type are installed of pipeline 21 or 23 midway.Thereby temperature that can steam regulation.
As can see from Figure 2, code of monitored location 28 expressions is the water drum of pressing vaporizer in.What code of monitored location 34 was represented is the water drum of a high-pressure carburetor, and the water drum of a low pressure carburetor of code of monitored location 38 expressions.
In this reheating waste gas boiler according to said structure of the present invention.No. three superheaters 2 and secondary reheater 3 are arranged in parallel.They have identical heat-transfer tube external diameter.Pipe distance at the airway width is identical.All hank equally in the pipe distance of exhaust gas flow direction and at the pipe row number of exhaust gas flow direction.Therefore, can remain under the identical condition along the width of airway resistance for waste gas.
Equally, the downstream direction of secondary superheater 4 and single reheat device 5 these devices of being in the above to be said is arranged in parallel.They also have identical heat-transfer tube external diameter.Pipe distance along the airway width is identical.Can hank equally in the pipe distance of exhaust gas flow direction and at the pipe row number of exhaust gas flow direction.Therefore along the width of airway.Resistance for waste gas can remain under the identical condition.
As mentioned above, because with No. three superheaters.Be high temperature superheater 2 and secondary reheater.Be that high temperature reheater 3 is arranged together abreast, simultaneously also because with secondary superheater.Be described superheater 4 of low temperature and single reheat device, promptly low-temperature reheater 5 is arranged together abreast.Therefore, can remain under the identical conditions along the resistance on the airway width.The pressure loss of waste gas can remain under the identical condition.Exhaust gas flow can always keep constant.Therefore just there is no need between superheater that is arranged in parallel and reheater partition wall to be set has separated exhaust steam passage specially.
It may be noted that in the exhaust boiler of this structure of explanation.In the embodiment of above-mentioned recommendation, all comprised deaerator 17.Low pressure economizer 13, middle pressure vaporizer 10, middle pressure superheater 9 and superheater 6 these devices.But these devices are the requisite structure condition of the present invention always not.
Therefore, the present invention can similarly be applied on the exhaust boiler that does not comprise deaerator 17 and low pressure economizer 13 fully.Equally, the present invention also can be applied on the exhaust boiler that does not possess low-pressure superheater 9.In addition, in some cases, No. one time superheater 6 also can save.
As mentioned above, according to structure of the present invention, by the superheater that is arranged in parallel and the exhaust gas flow of reheater.Along can always keeping constant in the width scope of airway.And need be between high temperature superheater and high temperature reheater, and between low temperature superheater and low-temperature reheater, partition wall be set exhaust steam passage is separated.These superheaters and reheater all correspondingly are arranged in parallel in the reheating waste gas boiler main body along on the upstream section of exhaust gas flow direction.Like this, just can from waste gas, reclaim heat effectively.The structure of exhaust boiler also obtains simplifying simultaneously.
Say principle of the present invention clear by an above-mentioned preferred embodiment of the present invention.But in fact abide by guiding theory of the present invention and can also obtain various embodiment.
Claims (2)
1, a kind of reheating waste gas boiler, its superheater and reheater are arranged in the exhaust boiler main body abreast along on the upstream section of exhaust gas flow direction; It is characterized in that what above-mentioned superheater and reheater all be divided into respectively.A high temperature superheater and a high temperature reheater are arranged on the upstream section of exhaust gas flow direction abreast, and a low-temperature reheater is installed in the downstream of above-mentioned high temperature superheater.In the downstream of above-mentioned high temperature reheater a low temperature superheater is installed then.Above-mentioned high temperature superheater will have identical heat-transfer tube external diameter with above-mentioned high temperature reheater.Pipe distance along the airway width is identical.Pipe distance in exhaust gas flow direction is identical, and is also identical at the pipe row number of exhaust gas flow direction; Above-mentioned low-temperature reheater equally also has the same heat-transfer tube external diameter with above-mentioned low temperature superheater.Pipe distance along the airway width is the same.Pipe distance in exhaust gas flow direction is the same, arranges number too at the pipe of exhaust gas flow direction.
2, the reheating waste gas boiler of saying according to claim 1, wherein the downstream direction at above-mentioned low temperature superheater and above-mentioned low-temperature reheater is equipped with a superheater.It is across on the passage of waste gas circulation, and the outlet of an above-mentioned superheater is connected with the inlet of above-mentioned low temperature superheater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89107554 CN1016531B (en) | 1989-09-28 | 1989-09-28 | Reheating waste gas boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89107554 CN1016531B (en) | 1989-09-28 | 1989-09-28 | Reheating waste gas boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1050602A true CN1050602A (en) | 1991-04-10 |
| CN1016531B CN1016531B (en) | 1992-05-06 |
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ID=4857245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89107554 Expired CN1016531B (en) | 1989-09-28 | 1989-09-28 | Reheating waste gas boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016531B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907289A (en) * | 2010-08-13 | 2010-12-08 | 辽宁中田干燥设备制造有限公司 | Heat energy device for preparing superheated steam with waste heat steam |
| CN102269396A (en) * | 2011-05-17 | 2011-12-07 | 上海锅炉厂有限公司 | Arrangement structure of boiler heating surfaces |
| CN104968915A (en) * | 2012-08-13 | 2015-10-07 | 巴布科克和威尔科克斯能量产生集团公司 | Rapid startup heat recovery steam generator |
| CN111780080A (en) * | 2020-08-09 | 2020-10-16 | 西安热工研究院有限公司 | 700 ℃ boiler water wall arrangement structure for inhibiting negative flow response characteristics |
-
1989
- 1989-09-28 CN CN 89107554 patent/CN1016531B/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907289A (en) * | 2010-08-13 | 2010-12-08 | 辽宁中田干燥设备制造有限公司 | Heat energy device for preparing superheated steam with waste heat steam |
| CN101907289B (en) * | 2010-08-13 | 2012-07-04 | 李相荣 | Heat energy device for preparing superheated steam with waste heat steam |
| CN102269396A (en) * | 2011-05-17 | 2011-12-07 | 上海锅炉厂有限公司 | Arrangement structure of boiler heating surfaces |
| CN104968915A (en) * | 2012-08-13 | 2015-10-07 | 巴布科克和威尔科克斯能量产生集团公司 | Rapid startup heat recovery steam generator |
| CN104968915B (en) * | 2012-08-13 | 2017-10-24 | 巴布考克及威尔考克斯公司 | It is quick to start heat recovery steam generator |
| TWI638942B (en) | 2012-08-13 | 2018-10-21 | 美商拜布克 威科斯公司 | Rapid startup heat recovery steam generator and method of retrofitting heat recovery steam generator |
| CN111780080A (en) * | 2020-08-09 | 2020-10-16 | 西安热工研究院有限公司 | 700 ℃ boiler water wall arrangement structure for inhibiting negative flow response characteristics |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1016531B (en) | 1992-05-06 |
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Granted publication date: 19920826 |