CN206469237U - The subcritical gas boilers of 150MW of pure burning blast-furnace gas - Google Patents
The subcritical gas boilers of 150MW of pure burning blast-furnace gas Download PDFInfo
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- CN206469237U CN206469237U CN201621488924.1U CN201621488924U CN206469237U CN 206469237 U CN206469237 U CN 206469237U CN 201621488924 U CN201621488924 U CN 201621488924U CN 206469237 U CN206469237 U CN 206469237U
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Abstract
The utility model discloses a kind of subcritical gas boilers of the 150MW of pure burning blast-furnace gas, including burner hearth, lower furnace portion is provided with gas burner, the hearth wall of burner hearth is water-cooling wall, drum is provided with the top of water-cooling wall, connected between drum and the lower header of water-cooling wall by down-comer, circulating direction of the roof of the furnace along flue gas is sequentially provided with pendant superheater, high temperature reheater and high temperature superheater, and high temperature superheater includes cold section of the superheater and the superheater hot arc being arranged in the middle part of flue for being arranged in flue both sides.The stable safety of gas-fired, high combustion efficiency, pollutant emission is low, and load is low, steady fuel efficiency fruit is good, and safe water circulation is reliable.Boiler integral arrangement is reasonable, the reasonable in design of each main heating surface, it is ensured that the operation steady in a long-term of boiler.Generating efficiency can be brought up to more than 40%, business efficiency is notable；The problems such as solving burning deflection in the serious overtemperature of reheater and superheater, the frequent booster of economizer, stove of super-pressure unit.
Description
Technical field
The utility model is related to gas fired-boiler technical field, subcritical in particular to a kind of 150MW of pure burning blast-furnace gas
Gas boiler.
Background technology
The pure boiler generation technology that burns gas is to burn to produce in the boiler using a large amount of low-heat value gas in iron and steel enterprise to steam
Vapour, the technology that pushing turbine is generated electricity.The coal gas power generation project have construction investment province, generating energy consumption cost it is low, operation
The advantages of cost is low, pay off period is few, environment protecting is good, belongs to the extraordinary project of business efficiency in iron and steel enterprise,
Each iron and steel enterprise pays much attention to the development of coal gas generation technology, the large, medium and small equal investment construction of iron and steel enterprise after 21 century is entered
The pure power generation project that burns gas.
Gas-driven generator group is presently mainly medium temperature and medium pressure, HTHP, super-pressure single reheat parameter unit, and generate electricity effect
Rate is low, causes the significant wastage of the energy, and many units occurred in that in actual motion reheater and the serious overtemperature of superheater,
In the frequent booster of economizer, stove the problems such as burning deflection, the safe and stable operation of gas boiler is had a strong impact on.
Utility model content
The purpose of this utility model seeks to solve a kind of the not enough high, economic there is provided generating efficiency of above-mentioned background technology
Effect is good, the subcritical gas boilers of 150MW of the high pure burning blast-furnace gas of job stability.
In order to achieve this, the subcritical gas boilers of the 150MW of the pure burning blast-furnace gas designed by the utility model, including
Burner hearth, the lower furnace portion is provided with gas burner, and the hearth wall of the burner hearth is to be provided with vapour at the top of water-cooling wall, the water-cooling wall
Connected between bag, the lower header of the drum and water-cooling wall by down-comer, it is characterised in that：The roof of the furnace is along flue gas
Circulating direction is sequentially provided with pendant superheater, high temperature reheater and high temperature superheater, and the high temperature superheater includes being arranged in cigarette
Cold section of the superheater of road both sides and the superheater hot arc being arranged in the middle part of flue.
Specifically, the bottom both sides of the water-cooling wall are interval with multiple gas burners, the water-cooling wall from bottom to top
Bottom both sides be additionally provided with front and rear arch above gas burner.
Further, the water-cooling wall bottom is provided with wall with refractory lining, refracto.
It is preferred that, the gas burner is Dual-cyclone combustor.
Specifically, the top of the burner hearth is communicated with preceding flue and rear pass by reversal chamber, the preceding flue is by up to
Under be sequentially provided with multiple low-temperature reheaters and preceding flue low-level (stack-gas) economizer；The rear pass is from top to bottom sequentially provided with multiple low temperature
Superheater and rear pass low-level (stack-gas) economizer.
It is preferred that, the first flue gas temperature-adjusting baffle is provided between preceding the flue low-level (stack-gas) economizer and air preheater；It is described
The second flue gas temperature-adjusting baffle is provided between rear pass low-level (stack-gas) economizer and air preheater.
The beneficial effects of the utility model are：The stable safety of gas-fired, high combustion efficiency, pollutant emission is low, load
Low, steady fuel efficiency fruit is good, and safe water circulation is reliable.Boiler integral arrangement is reasonable, the reasonable in design of each main heating surface, it is ensured that
The operation steady in a long-term of boiler.Generating efficiency can be brought up to more than 40%, business efficiency is notable；Solve super-pressure unit
Reheater and the serious overtemperature of superheater, the frequent booster of economizer, stove in burning deflection the problems such as, can efficient stable operation.
Brief description of the drawings
Fig. 1 is the structural representation of the subcritical gas boilers of 150MW of pure burning blast-furnace gas in the utility model；
Wherein, 1-burner hearth, 2-gas burner, 3-water-cooling wall, 4-drum, 5-down-comer, 6-pendant superheater,
7-high temperature reheater, 8-high temperature superheater (cold section of 8.1-superheater, 8.2-superheater hot arc), 9-front and rear arch, 10-turn
To room, 11-preceding flue, 12-rear pass, 13-low-temperature reheater, 14-preceding flue low-level (stack-gas) economizer, 15-air preheat
Device, 16-low temperature superheater, 17-rear pass low-level (stack-gas) economizer, 18-wall with refractory lining, refracto, the 19-the first flue gas temperature-adjusting baffle, 20-the
Two flue gas temperature-adjusting baffles.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
The subcritical gas boilers of 150MW of pure burning blast-furnace gas as shown in Figure 1, including burner hearth 1, the bottom of burner hearth 1 is provided with
Gas burner 2, gas burner 2 is Dual-cyclone combustor.The hearth wall of burner hearth 1 is water-cooling wall 3, and the top of water-cooling wall 3 is provided with
Connected between the lower header of drum 4, drum 4 and water-cooling wall 3 by down-comer 5, circulating direction of the top of burner hearth 1 along flue gas is successively
Provided with pendant superheater 6, high temperature reheater 7 and high temperature superheater 8, high temperature superheater 8 includes being arranged in the overheat of flue both sides
Cold section 8.1 of device and the superheater hot arc 8.2 being arranged in the middle part of flue.The bottom both sides of water-cooling wall 3 are interval with many from bottom to top
Individual gas burner 2, the bottom both sides of water-cooling wall 3 are additionally provided with the front and rear arch 9 positioned at the top of gas burner 2.The bottom of water-cooling wall 3
Provided with wall with refractory lining, refracto 18.Flue 11 and rear pass 12 before the top of burner hearth 1 is communicated with by reversal chamber 10, preceding flue 11 is from top to bottom
It is sequentially provided with low-temperature reheater 13 and preceding flue low-level (stack-gas) economizer 14；Rear pass 12 is from top to bottom sequentially provided with low temperature superheater 16
With rear pass low-level (stack-gas) economizer 17.The first flue gas temperature-adjusting baffle is provided between preceding flue low-level (stack-gas) economizer 14 and air preheater 15
19；The second flue gas temperature-adjusting baffle 20 is provided between rear pass low-level (stack-gas) economizer 17 and air preheater 15.
The working method of the subcritical gas boilers of 150MW of designed pure burning blast-furnace gas is in the utility model：
The distinguished and admirable journey of boiler smoke：By air blower Lai combustion air be heated to 200~300 DEG C by the air preheater of afterbody
After the gas burner 2 for respectively enteing front-back wall arrangement with coal gas afterwards, burnt in burner hearth 1.High-temperature flue gas after burning passes through
On burner hearth 1 after heating and cooling enter horizontal flue in pendant superheater 6, high temperature reheater 7, cold and hot section 8.1 of superheater, further
After cooling, into reversal chamber 10, then downwards respectively by the preceding flue 11 and rear pass 12 of tail vertical well, cloth in preceding flue 11
It is equipped with low-temperature reheater 13 and preceding flue low-level (stack-gas) economizer 14, rear pass 12 and is disposed with low temperature superheater 16 and rear pass low temperature
Economizer 17.Then the first air into afterbody after the first flue gas temperature-adjusting baffle 19 and the second flue gas temperature-adjusting baffle 20 is pre-
The hot air preheater 18 of device 15 and second.Exhaust gas temperature is reduced to 200 DEG C or so heel row and gone out outside boiler body.
Boiler carbonated drink flow：
Main steam flow：By water-supplying operation platform Lai feedwater initially enter low-level (stack-gas) economizer in afterbody twin flue, then
Enter drum 4 after into Coal Saver Hanged Pipe.Undersaturation water in drum 4 is entered downwards the next part of water-cooling wall 3 by down-comer 5
Case, is then upwardly into water-cooling wall pipe of burner hearth and carries out being heated into steam water interface, enter drum 4, carbonated drink by water-cooling wall fairlead
Mixture carries out steam-water separation in drum 4, and saturated vapor is overheated by the saturated vapor fairlead on the top of drum 4 into ceiling
Device import header, then enters afterbody enclosure wall superheater by steam, then by low temperature superheater 16, one-level water spray
Attemperator, pendant superheater 6, two grades of direct-contact desuperheaters, cold section 8.1 of superheater, three-level direct-contact desuperheater, superheater hot arc 8.2,
Finally steam turbine is sent to by superheater hot arc outlet header into main steam line.
Reheated steam flow：By high pressure cylinder steam discharge Lai reheated steam initially enter low-temperature reheater import header after enter
Low-temperature reheater 13, subsequently into accident and fine setting direct-contact desuperheater, high temperature reheater import header, after high temperature reheater 7
Into high temperature reheater outlet header, steam turbine is then sent to by reheaing steam pipe and generated electricity.
It is described above, only it is preferred embodiment of the present utility model, any not is done to structure of the present utility model
Formal limitation.It is every any simple modification made according to technical spirit of the present utility model to above example, equivalent
Change and modification, in the range of still falling within the technical solution of the utility model.
Claims (6)
1. a kind of subcritical gas boilers of the 150MW of pure burning blast-furnace gas, including burner hearth (1), burner hearth (1) bottom are provided with coal
Air burner (2), the hearth wall of the burner hearth (1) is that drum (4) is provided with the top of water-cooling wall (3), the water-cooling wall (3), described
It is connected between drum (4) and the lower header of water-cooling wall (3) by down-comer (5), it is characterised in that：Edge at the top of the burner hearth (1)
The circulating direction of flue gas is sequentially provided with pendant superheater (6), high temperature reheater (7) and high temperature superheater (8), the hyperthermia and superheating
Device (8) includes the superheater hot arc (8.2) for being arranged in the superheater cold section (8.1) of flue both sides and being arranged in the middle part of flue.
2. a kind of subcritical gas boilers of the 150MW of pure burning blast-furnace gas as claimed in claim 1, it is characterised in that：It is described
The bottom both sides of water-cooling wall (3) are interval with multiple gas burners (2), the bottom both sides of the water-cooling wall (3) from bottom to top
It is additionally provided with the front and rear arch (9) above gas burner (2).
3. a kind of subcritical gas boilers of the 150MW of pure burning blast-furnace gas as claimed in claim 2, it is characterised in that：It is described
Water-cooling wall (3) bottom is provided with wall with refractory lining, refracto (18).
4. a kind of subcritical gas boilers of the 150MW of pure burning blast-furnace gas as claimed in claim 1 or 2, it is characterised in that：Institute
Gas burner (2) is stated for Dual-cyclone combustor.
5. a kind of subcritical gas boilers of the 150MW of pure burning blast-furnace gas as claimed in claim 1, it is characterised in that：It is described
The top of burner hearth (1) is communicated with preceding flue (11) and rear pass (12) by reversal chamber (10), and the preceding flue (11) is by up to
Under be sequentially provided with low-temperature reheater (13) and preceding flue low-level (stack-gas) economizer (14)；The rear pass (12) is from top to bottom sequentially provided with
Low temperature superheater (16) and rear pass low-level (stack-gas) economizer (17).
6. a kind of subcritical gas boilers of the 150MW of pure burning blast-furnace gas as claimed in claim 5, it is characterised in that：It is described
The first flue gas temperature-adjusting baffle (19) is provided between preceding flue low-level (stack-gas) economizer (14) and air preheater (15)；The rear pass is low
The second flue gas temperature-adjusting baffle (20) is provided between warm economizer (17) and air preheater (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621488924.1U CN206469237U (en) | 2016-12-30 | 2016-12-30 | The subcritical gas boilers of 150MW of pure burning blast-furnace gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621488924.1U CN206469237U (en) | 2016-12-30 | 2016-12-30 | The subcritical gas boilers of 150MW of pure burning blast-furnace gas |
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| CN206469237U true CN206469237U (en) | 2017-09-05 |
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| CN201621488924.1U Active CN206469237U (en) | 2016-12-30 | 2016-12-30 | The subcritical gas boilers of 150MW of pure burning blast-furnace gas |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775598A (en) * | 2018-08-29 | 2018-11-09 | 哈尔滨锅炉厂有限责任公司 | The supercritical CO 2 pilot boiler of temperature adjustment is coupled with recycling using gas baffle |
| CN109630998A (en) * | 2018-11-23 | 2019-04-16 | 东方电气集团东方锅炉股份有限公司 | A kind of high parameter waste heat boiler suitable for refuse incineration grate furnace |
| CN110118356A (en) * | 2019-06-03 | 2019-08-13 | 南通万达锅炉有限公司 | A kind of high parameter fire grate garbage burning boiler |
| CN111550760A (en) * | 2020-04-17 | 2020-08-18 | 江联重工集团股份有限公司 | High-capacity high-parameter environment-friendly gas boiler capable of adapting to various fuels |
| CN112097246A (en) * | 2020-09-25 | 2020-12-18 | 哈尔滨锅炉厂有限责任公司 | Convection reheater for ultra-high pressure boiler |
-
2016
- 2016-12-30 CN CN201621488924.1U patent/CN206469237U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775598A (en) * | 2018-08-29 | 2018-11-09 | 哈尔滨锅炉厂有限责任公司 | The supercritical CO 2 pilot boiler of temperature adjustment is coupled with recycling using gas baffle |
| CN109630998A (en) * | 2018-11-23 | 2019-04-16 | 东方电气集团东方锅炉股份有限公司 | A kind of high parameter waste heat boiler suitable for refuse incineration grate furnace |
| CN110118356A (en) * | 2019-06-03 | 2019-08-13 | 南通万达锅炉有限公司 | A kind of high parameter fire grate garbage burning boiler |
| CN111550760A (en) * | 2020-04-17 | 2020-08-18 | 江联重工集团股份有限公司 | High-capacity high-parameter environment-friendly gas boiler capable of adapting to various fuels |
| CN112097246A (en) * | 2020-09-25 | 2020-12-18 | 哈尔滨锅炉厂有限责任公司 | Convection reheater for ultra-high pressure boiler |
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