CN206300215U - A kind of system of utilization biomass gasified gas combustion heating SCR inlet flue gas - Google Patents
A kind of system of utilization biomass gasified gas combustion heating SCR inlet flue gas Download PDFInfo
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- CN206300215U CN206300215U CN201621232169.0U CN201621232169U CN206300215U CN 206300215 U CN206300215 U CN 206300215U CN 201621232169 U CN201621232169 U CN 201621232169U CN 206300215 U CN206300215 U CN 206300215U
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Abstract
The utility model discloses a kind of system of utilization biomass gasified gas combustion heating SCR inlet flue gas, the system is arranged on the connection flue of boiler economizer and SCR reactors, the biogas conveyance conduit and airflow pipe being connected including burner and with combustor air inlet end, the connection flue is provided with chimney, the exhanst gas outlet correspondence of burner is arranged on chimney, correspondence chimney position is provided with flue gas block in connection flue, and one end of the flue gas block is hinged on the inwall of connection flue, is used to cover or open chimney.The gas fuel burning heating SCR denitration system inlet flue gas that the utility model is produced using biomass gasifying furnace, make cigarette temperature reach SCR denitration system input and require, realize station boiler full load denitration.
Description
Technical field：
The utility model is related to a kind of system of utilization biomass gasified gas combustion heating SCR inlet flue gas.
Background technology：
With the further raising of environmental requirement, it is desirable to which thermal power plant pollutant emission full load Duan Jun reaches minimum discharge will
Ask, must not arbitrarily exit denitrating system operation, therefore thermal power plant full load denitration technology research is brought into schedule.But it is existing
Widely used gas denitrifying technology（SCR technology）, because of reasons such as catalyst activities, its operating temperature is general 310 DEG C~420
DEG C, and at low load（Below general 50% rated load）, flue-gas temperature cannot meet, it has to exit denitrating system operation,
Cause NOx emission exceeded.As thermoelectricity rate of load condensate constantly declines in recent years, fired power generating unit depth peak regulation has turned into new normality, very
To requiring the flexible start and stop of fired power generating unit.Environmental requirement and the present situation of thermoelectricity underload, the development of full load denitration technology very must
Will.
In order to improve flue gas denitrification system inlet flue gas temperature, improve in the devoting rate of flue gas denitrification system, current industry
Application have the economizer gas bypass, classification economizer, #0 high plus etc. technology, but cannot meet it is grid-connected after i.e. throwing denitrating system
It is required that, or even the need for existing unit depth peak regulation cannot be met.
Therefore, it is necessory to be improved to solve the deficiency of prior art to prior art.
The content of the invention：
The utility model is provided one kind and utilizes biomass gasified gas to solve the problems, such as above-mentioned prior art
The system of combustion heating SCR inlet flue gas.
The technical scheme that the utility model is used has：One kind utilizes biomass gasified gas combustion heating SCR inlet flue gas
System, the system is arranged on the connection flue of boiler economizer and SCR reactors, including burner and entered with burner
The biogas conveyance conduit and airflow pipe of gas end connection, the connection flue are provided with chimney, the cigarette of burner
Gas outlet correspondence is arranged on chimney, and correspondence chimney position is provided with flue gas block, and the flue gas block in connection flue
Installed in connection flue inwall on, be used to cover or open chimney.
Further, the burner be arranged on it is described connection flue in horizontal flue top, and burner tilt in
The horizontal flue is set, horizontal by 30-50 ° of angle.
Further, sink on horizontal flue inwall in the chimney on horizontal flue, and when flue gas block is covered, cigarette
Gas stop-surface is concordant with horizontal flue inwall.
Further, the horizontal flue top sets 3-6 group burners, and each burner is located in same flue cross section.
Further, with burner in 75-105 ° of angle when the flue gas block is opened, in order to mixed flue gas.
Further, the flue gas block side is hinged in flue inner wall, and opposite side is provided with for folding flue gas block
Drawing article, one end of the drawing article through connection flue side wall and stretch in outside connection flue.
Further, the flue gas block middle part is provided with thief hole, and the sampled pipe connection in the thief hole rear end is placed in flue
Outer CO concentration monitoring devices, for monitoring whether gas fuel burning is abundant in burner.
Further, thermocouple temperature measurement instrument is provided with the gas approach of SCR reactors, for detecting that SCR reactors enter
Mouth flue temperature.
The utility model has the advantages that：
The gas fuel burning heating SCR denitration system inlet flue gas that the utility model is produced using biomass gasifying furnace,
Make cigarette temperature reach SCR denitration system input to require, realize station boiler full load denitration.
Brief description of the drawings：
Fig. 1 is the structure chart of the utility model flue gas system.
Fig. 2 is structural representation of the flue gas block in flue in the utility model flue gas system.
Specific embodiment：
The utility model is further described below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, a kind of utilization biomass gasified gas combustion heating SCR inlet flue gas of the utility model is
System, the system is arranged on the connection flue 2 of boiler economizer 100 and SCR reactors 200, including burner 3, biogas
Conveyance conduit 5 and airflow pipe 6, biogas conveyance conduit 5 and airflow pipe 6 respectively with the air inlet of burner 3
End is connected.Chimney is provided with connection flue 2, the exhanst gas outlet correspondence of burner 3 is sealedly connected on chimney, in connection
Flue gas block 4 is provided with the position of correspondence chimney in flue 2, one end of the flue gas block 4 is hinged on the inwall of connection flue 2
On, it is used to cover or open chimney.
Burner 3 in the utility model is provided with 3-6 groups, and each burner 3 is located at the horizontal flue 21 in connection flue 2
In same flue cross section, and each burner 3 favours the horizontal flue 21 and sets, horizontal by 30-50 ° of angle.
Sink into chimney on horizontal flue 21 on the inwall of horizontal flue 21, and when flue gas block 4 is covered, flue gas gear
Block surface is concordant with the inwall of horizontal flue 21, it is to avoid flue gas is played a reversed role and causes chimney dust stratification when burner is stopped transport.
When flue gas block 4 is opened, flue gas block 4 is in 75-105 ° of angle with the exhanst gas outlet of burner 3, in order to mix
Flue gas.
For ease of folding flue gas block 4, the drawing article for folding flue gas block is provided with flue gas block 4（In figure not
Draw）, installation through-hole is provided with the horizontal flue 21 in flue 2 is connected, installation through-hole is stated simultaneously in one end of drawing article through this
Stretch in outside connection flue.To prevent the gas in horizontal flue 21 from leaking, it is provided with close with the junction of installation through-hole in drawing article
Seal.
Thief hole 41 is provided with the middle part of flue gas block, probe tube 42 is connected with thief hole 41, the probe tube 42 stretches in water
Flat flue 21 is outer and connects the CO concentration monitoring devices 7 being placed in outside flue.The structure on horizontal flue 21 of probe tube 42 with draw
Structure of the moving part on horizontal flue is similar, therefore repeats no more.
Thermocouple temperature measurement instrument is provided with the gas approach in SCR reactors 200, for detecting SCR reactor inlet cigarettes
Channel temp.
(generally below 310 DEG C), profit when the entrance flue gas temperature of SCR reactors 1 is less than minimum throwing denitrating system temperature
With biogas in the connection flue 2 of SCR denitration system entrance combustion heating flue gas, flue-gas temperature is reached minimum throwing
Denitrating system temperature, biogas quantity combusted can be according to the deficient enthalpy flexible modulation of denitrating system inlet flue gas.SCR reactors 200
Entrance flue gas temperature by thermocouple measurement, flammable tolerance is controlled with flue-gas temperature.Biomass gasified gas are provided with high temperature air
Oxygen amount needed for burning, high temperature air amount can flexible modulation with the biogas scale of construction.
To ensure biogas after-flame, according to the flue gas after extraction gas fuel burning at the thief hole on flue gas block 4,
CO concentration monitors are carried out by CO concentration monitoring devices 7, high temperature air amount is finely tuned according to CO concentration.
Biogas burning after high-temperature flue gas at an angle with velocity shock to flue gas block on, make high-temperature flue gas
Uniformly mix into inner flue gas of the stove, improve flue-gas temperature, finally diffuse to whole connection flue 2, it is ensured that the cigarette in whole flue
Gas uniform temperature fields.When burner 3 is exited, flue gas block is packed up, then cover the spout on flue 2, on the one hand protection combustion
Sleeve is burnt, the resistance of flue is on the other hand reduced.
The above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, some improvement can also be made on the premise of the utility model principle is not departed from, these improvement also should be regarded as
Protection domain of the present utility model.
Claims (8)
1. a kind of system of utilization biomass gasified gas combustion heating SCR inlet flue gas, the system is arranged at boiler economizer
（100）With SCR reactors（200）Connection flue（2）On, it is characterised in that：Including burner（3）And and burner（3）
The biogas conveyance conduit of inlet end connection（5）And airflow pipe（6）, the connection flue（2）Chimney is provided with,
Burner（3）Exhanst gas outlet correspondence be arranged on chimney, correspondence chimney position is provided with flue gas block in connection flue
（4）, and the flue gas block（4）Installed in connection flue inwall on, be used to cover or open chimney.
2. the system of utilization biomass gasified gas combustion heating SCR inlet flue gas according to claim 1, its feature exists
In：The burner（3）It is arranged on the connection flue（2）In horizontal flue（21）Top, and burner（3）Favour this
Horizontal flue is set, horizontal by 30-50 ° of angle.
3. the system of utilization biomass gasified gas combustion heating SCR inlet flue gas according to claim 2, its feature exists
In：Horizontal flue（21）On chimney in sink on horizontal flue inwall, and when flue gas block（4）When covering, flue gas block
Surface and horizontal flue（21）Inwall is concordant.
4. the system of utilization biomass gasified gas combustion heating SCR inlet flue gas according to claim 2, its feature exists
In：The horizontal flue（21）Top sets 3-6 group burners（3）, each burner is in same flue cross section.
5. the system of utilization biomass gasified gas combustion heating SCR inlet flue gas according to claim 1, its feature exists
In：The flue gas block（4）During opening and burner（3）In 75-105 ° of angle, cigarette is carried out in order to high-temperature flue gas after burning and burner hearth
Gas is well mixed.
6. the system of utilization biomass gasified gas combustion heating SCR inlet flue gas according to claim 1, its feature exists
In：The flue gas block（4）Side is hinged in flue inner wall, and opposite side is provided with the drawing article for folding flue gas block, should
One end of drawing article passes through connection flue（2）Side wall and stretch in connection flue outside.
7. the system of utilization biomass gasified gas combustion heating SCR inlet flue gas according to claim 1, its feature exists
In：The flue gas block middle part is provided with thief hole（41）, the thief hole（41）The sampled pipe in rear end（42）Connection is placed in outside flue
CO concentration monitoring devices（7）, it is used to monitor biomass gasified gas after-flame situation, feed back the quantity of hot air of biomass gasified gas.
8. the system of utilization biomass gasified gas combustion heating SCR inlet flue gas according to claim 1, its feature exists
In：Thermocouple temperature measurement instrument is provided with the gas approach of SCR reactors, for detecting SCR reactor inlet flue temperatures, is used to
Adjust the total amount of biomass gasified gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621232169.0U CN206300215U (en) | 2016-11-17 | 2016-11-17 | A kind of system of utilization biomass gasified gas combustion heating SCR inlet flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621232169.0U CN206300215U (en) | 2016-11-17 | 2016-11-17 | A kind of system of utilization biomass gasified gas combustion heating SCR inlet flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206300215U true CN206300215U (en) | 2017-07-04 |
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ID=59202763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621232169.0U Active CN206300215U (en) | 2016-11-17 | 2016-11-17 | A kind of system of utilization biomass gasified gas combustion heating SCR inlet flue gas |
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| CN (1) | CN206300215U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109603544A (en) * | 2018-12-27 | 2019-04-12 | 永清环保股份有限公司 | A kind of equipment for denitrifying flue gas and method |
| CN110201532A (en) * | 2019-03-27 | 2019-09-06 | 宁波大学 | A kind of full load denitrating system improving SCR inlet smoke temperature using gas fuel burning |
-
2016
- 2016-11-17 CN CN201621232169.0U patent/CN206300215U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109603544A (en) * | 2018-12-27 | 2019-04-12 | 永清环保股份有限公司 | A kind of equipment for denitrifying flue gas and method |
| CN110201532A (en) * | 2019-03-27 | 2019-09-06 | 宁波大学 | A kind of full load denitrating system improving SCR inlet smoke temperature using gas fuel burning |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210046 fairyland Road, Qixia District, Nanjing, Jiangsu Province, No. 10 Patentee after: Guodian Nanjing electric power test & Research Co., Ltd. Address before: 210046 fairyland Road, Qixia District, Nanjing, Jiangsu Province, No. 10 Patentee before: Nanjing Power Equipment Quality & Performance Test Center |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210046 fairyland Road, Qixia District, Nanjing, Jiangsu Province, No. 10 Patentee after: Guoneng Nanjing Electric Power Test Research Co.,Ltd. Address before: 210046 fairyland Road, Qixia District, Nanjing, Jiangsu Province, No. 10 Patentee before: GUODIAN NANJING ELECTRIC POWER TEST RESEARCH Co.,Ltd. |