CN1016531B - Reheating waste gas boiler - Google Patents
Reheating waste gas boilerInfo
- Publication number
- CN1016531B CN1016531B CN 89107554 CN89107554A CN1016531B CN 1016531 B CN1016531 B CN 1016531B CN 89107554 CN89107554 CN 89107554 CN 89107554 A CN89107554 A CN 89107554A CN 1016531 B CN1016531 B CN 1016531B
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- Prior art keywords
- superheater
- reheater
- low
- flow direction
- gas flow
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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.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.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 calcination.At Japan Patent MN.61-186702(1986) and U.S. Pat-4,664, what announced in 067 is exactly an example of this exhaust boiler.
In these exhaust boilers in the past, two cover secondary superheater 102 and secondary reheaters 103 are installed abreast in the upstream section of the exhaust gas flow direction of boiler body 101.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 extensive hot device 105 all correspondingly is housed once with respect to the downstream direction of corresponding secondary reheater 103.Simultaneously, in the downstream of the airflow direction of these devices, high pressure evaporator 106 also has been installed along the width of airway.
Downstream direction at this high pressure evaporator 106 is equipped with a high-pressure economizer 107, and at the downstream direction of this high-pressure economizer 107, and then a low-pressure superheater 108 has been installed.A low pressure evaporator 109 and a low-pressure coal saver 110.
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 is connected with the lower collecting box 106a of high pressure evaporator 106 by down-comer 113.In addition, the upper header 106b of high pressure evaporator 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 coal saver 110, and is connected with the lower collecting box 109a of low pressure evaporator 109 by a down-comer 116.In addition, the upper header 109b of low pressure evaporator 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 of these connecting pipes of being said also disposes attemperator is controlled steam by water spray, injection or other similar approach temperature in the above.
The above-mentioned once operational circumstances with exhaust boiler 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, and 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, make-up water (condensed water) is sent in the low-pressure coal saver 110, in economizer, heated by waste gas by a condensate pump (not showing on the figure).Then, heated make-up water is sent into the low-pressure steam bag 112 from low-pressure coal saver 110 again.A part of make-up water in the low-pressure drum 112 is sent in the low pressure evaporator 109 by the down-comer 116 that falls.In this low pressure evaporator 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, makes 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, is 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 evaporator 106 by down-comer 113.Here heated, become the fluid-mixing of steam and water, and get back in the high pressure drum 111 by upper connecting tube 114 by waste gas.
Fluid-mixing is separated into steam and water in high pressure drum 111, steam is admitted in superheater 105 by steam pipe 115, is made it overheated by the waste gas heating in this superheater 105.Then, superheated steam says that by top connecting line is sent in the attemperator.In this attemperator, 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 attemperator, 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 superheater and reheater like this, 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, is interconnected with secondary superheater 102 and in the downstream of the exhaust gas flow direction of secondary reheater 103 105, superheaters of a superheater 105 are installed; Also be interconnected between single reheat device 104 and the secondary reheater 103,, the passage of waste gas separated by between corresponding superheater and corresponding reheater, parallel partition wall 121 being set.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, and that is exactly, owing to be provided with parallel partition wall between superheater and reheater, is used for exhaust steam passage is separated, and makes 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 parallel 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, and 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 the superheater of a low temperature is installed in the downstream of the reheater of high temperature.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, have consistent pipe distance.On exhaust gas flow direction, have identical pipe distance, on exhaust gas flow direction, have identical pipe row number.
That has been said above having adopted locates after the method, 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, the pipe distance on the airway width.Just all consistent 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 will become more obvious when according to accompanying drawing the embodiment of a recommendation being described.
In the accompanying drawings:
Shown in Figure 1 is the schematic plan view of a preferred embodiment of reheating waste gas boiler of the present invention;
Shown in Figure 2 is the side-looking schematic diagram of same exhaust boiler;
Shown in Figure 3 is the schematic plan view of example reheating waste gas boiler in the past;
The side-looking schematic diagram 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 carried out carefully illustrating.
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 deaerator 17 in 14, one of the high pressure drums are being installed above the exhaust boiler main body 1.
By a condensate pump not shown in the figures make-up water (condensed water) is sent in the low-pressure coal saver 13 by pipeline 36, and be admitted in the deaerator 17 by pipeline 20 and carry out degasification with steam.The used vapours of degasification is attracted 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, is admitted to again after being heated in the intermediate pressure turbine machine.In this case, in case of necessity can be at the attemperator 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, sends in 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 attemperator 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, what code of monitored location 28 was represented is the water drum of pressing evaporimeter in, and what code of monitored location 34 was represented is the water drum of a high pressure evaporator, and the water drum of a low pressure evaporator 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 attitude heat-transfer tube external diameter together, pipe distance at the airway width is identical, the pipe of exhaust gas flow direction apart from and all hank equally 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 these devices that secondary superheater 4 and single reheat device 5 are 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, can remain under the identical condition for the resistance of waste gas.
As mentioned above, because with No. three superheaters, be that high temperature superheater 2 is that high temperature reheater 3 is arranged together abreast with secondary reheater, simultaneously also because with secondary superheater, i.e. 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, and exhaust gas flow can always keep constant.Therefore just there is no need between the superheater that is arranged in parallel 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 coal saver 13 is pressed superheater 9 and superheater 6 these devices in the middle pressure evaporimeter 10.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 coal saver 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 is 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 reclaim heat effectively from waste gas, 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 a lot of different embodiment.
Claims (2)
1, a kind of reheating waste gas boiler, what its superheater and reheater be divided into, and arrange to low pressure from high pressure along the exhaust gas flow direction of exhaust boiler, the downstream of high temperature superheater is equipped with a low-temperature reheater, and a low temperature superheater is installed in the downstream of high temperature reheater, evaporimeter and economizer are also arranged to low pressure from high pressure along the exhaust gas flow direction of exhaust boiler, it is characterized in that, above-mentioned high temperature superheater has 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, and is the same in the pipe distance of exhaust gas flow direction, 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 CN1050602A (en) | 1991-04-10 |
| CN1016531B true CN1016531B (en) | 1992-05-06 |
Family
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) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US20140041359A1 (en) * | 2012-08-13 | 2014-02-13 | Babcock & Wilcox Power Generation Group, Inc. | Rapid startup heat recovery steam generator |
-
1989
- 1989-09-28 CN CN 89107554 patent/CN1016531B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1050602A (en) | 1991-04-10 |
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| SE01 | Entry into force of request for substantive examination | ||
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| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 19920826 |