CN205261624U - A cooling flame frontal surface device that can restrain NOx formation in being used for gas boiler furnace - Google Patents
A cooling flame frontal surface device that can restrain NOx formation in being used for gas boiler furnace Download PDFInfo
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- CN205261624U CN205261624U CN201521092719.9U CN201521092719U CN205261624U CN 205261624 U CN205261624 U CN 205261624U CN 201521092719 U CN201521092719 U CN 201521092719U CN 205261624 U CN205261624 U CN 205261624U
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- cooling water
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- boiler furnace
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Abstract
A cooling flame frontal surface device that can restrain NOx formation in being used for gas boiler furnace, it mainly include the tube sheet and down the tube sheet and install last tube sheet under and the two sets of experts between the tube sheet with the condenser tube of cooling water, two sets of condenser tube each be listed as along flame burning direction adjacent row around two rows, and the condenser tube staggered arrangement in two rows, boiler furnace in gas flame be the horizontal direction, two rows of horizontal flame directions of condenser tube perpendicular to are arranged around being around and, just condenser tube's cooling water water flow direction is from up flowing down, and the control of the cooling water flow who flows, speed is the standard with flame frontal surface temperature 1450 - 1550 DEG C, it has simple structure, a compactness, uses control convenient, can effectively restrain NOx's formation, and combustion efficiency improves, burning condition characteristics such as improve.
Description
Technical field
The utility model relates to the cooling flame sharp side device that a kind of NOx of inhibition generates, belong to boiler combustion technology field.
Background technology
The composition of natural gas is CH4, and natural gas carries out burning meeting because heating power type produces NOx passing in vacuum boiler, according to the combustion mechanism of Jie Lidaoweiqi, when combustion flame sharp side temperature is higher than 1500 DEG C, just start to generate NOx; 100 DEG C of the every risings of flame front temperature, the aggregate velocity of NOx just increases by 6-7 times, and controlling flame front temperature is to control the synthetic key factor of NOx. Generally adopt at present oxygen-enriched combusting, poor, rich fuel-staged combustion, the combustion system that smoke backflow combines suppresses the generation of NOx, this also brings numerous counter productives, for example boiler efficiency declines (it is large that air-fuel ratio becomes), and combustion position degenerates (oxygen proportion when burning declines), huge structure, complexity, and in the time of varying duty, control and become more complicated.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, and provide a kind of simple in structure, compact, and use and control conveniently, can effectively suppress the generation of NOx, efficiency of combustion improves, the cooling flame sharp side device that the suppressed NOx that burning condition improves generates.
The purpose of this utility model completes by following technical solution, a kind of cooling flame sharp side device generating for suppressing NOx in gas fired-boiler burner hearth, it mainly comprise upper perforated plate and lower perforated plate and be arranged on upper perforated plate and lower perforated plate between two groups of cooling water pipes that pass to cooling water, two groups of described cooling water pipes respectively along flame combustion direction adjacent be arranged in before and after two rows, and two row in cooling water pipe interlaced arrangement.
As preferably: the gas flame in described boiler furnace in horizontal direction, and front and back two arrange cooling water pipe perpendicular to horizontal flame direction be before and after arrange, and the cooling water water (flow) direction of described cooling water pipe flows from the bottom up, and the control of mobile cooling water flow, speed taking flame front temperature at 1450-1550 DEG C as standard.
The utlity model has simple in structure, compactly, use and control conveniently, can effectively suppress the generation of NOx, efficiency of combustion improves, the burning condition feature such as improve.
Brief description of the drawings
Fig. 1 is side-looking structural representation of the present utility model.
Fig. 2 is plan structure schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail: shown in Fig. 1,2, a kind of cooling flame sharp side device generating for suppressing NOx in gas fired-boiler burner hearth described in the utility model, it mainly comprise upper perforated plate 1 and lower perforated plate 2 and be arranged on upper perforated plate 1 and lower perforated plate 2 between two groups of cooling water pipes 3 that pass to cooling water, two groups of described cooling water pipes 3 respectively along flame 4 burning directions adjacent be arranged in before and after two rows, and two row in cooling water pipe interlaced arrangement.
Shown in figure, gas flame 4 in boiler furnace described in the utility model in horizontal direction, and front and back two arrange cooling water pipe 3 perpendicular to horizontal flame 4 directions be before and after arrange, and the cooling water water (flow) direction of described cooling water pipe 3 flows from the bottom up, and the control of mobile cooling water flow, speed taking flame front temperature at 1450-1550 DEG C as standard.
Cooling water flow described in the utility model is adjusted with the variation of flame intensity, and under small load condition, cooling water flow velocity is low, and flame front temperature can too lowly not cause stopping working; At full capacity time, cooling water flow velocity is high, and flame front temperature maintains 1500 DEG C of left and right.
The utility model, by reasonably arranging and parameter designing, had both ensured the safety of burning, in addition cooling at flame front again, controlled the temperature of flame front, had effectively suppressed the generation of NOx; By coutroi velocity and burning velocity, obtain the burning degree of balance, uniform ignition temperature, flame is short, and combustion intensity is large, can just can obtain enough heat exchange requirements with less burner hearth. The utility model has changed current American-European technology for the low oxygen-enriched combusting comparatively generally adopting of flame front temperature, the negative effect (decrease in efficiency, combustion position degenerate) that rich or poor fuel combustion or smoke backflow bring, make simple in structure, compact, burning condition improves, and efficiency of combustion improves; Flue gas does not adopt under the condition of post processing, in the time of air-fuel ratio 1.15, can reach NOx yet and discharge lower than 10mg/m3, even in flue gas, there is no NOx.
Claims (2)
1. the cooling flame sharp side device generating for suppressing NOx in gas fired-boiler burner hearth, it mainly comprise upper perforated plate and lower perforated plate and be arranged on upper perforated plate and lower perforated plate between two groups of cooling water pipes that pass to cooling water, it is characterized in that two groups of described cooling water pipes respectively along flame combustion direction is adjacent be arranged in before and after two rows, and cooling water pipe interlaced arrangement in two rows.
2. the cooling flame sharp side device generating for suppressing NOx in gas fired-boiler burner hearth according to claim 1, gas flame in boiler furnace described in it is characterized in that in horizontal direction, and front and back two arrange cooling water pipe perpendicular to horizontal flame direction be before and after arrange, and the cooling water water (flow) direction of described cooling water pipe flows from the bottom up, and the control of mobile cooling water flow, speed taking flame front temperature at 1450-1550 DEG C as standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521092719.9U CN205261624U (en) | 2015-12-25 | 2015-12-25 | A cooling flame frontal surface device that can restrain NOx formation in being used for gas boiler furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521092719.9U CN205261624U (en) | 2015-12-25 | 2015-12-25 | A cooling flame frontal surface device that can restrain NOx formation in being used for gas boiler furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205261624U true CN205261624U (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521092719.9U Active CN205261624U (en) | 2015-12-25 | 2015-12-25 | A cooling flame frontal surface device that can restrain NOx formation in being used for gas boiler furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN205261624U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465821A (en) * | 2015-12-25 | 2016-04-06 | 力聚热力设备科技有限公司 | Cooling flame frontal surface device capable of inhibiting generation of NOx in hearth of gas-fired boiler |
| CN107575868A (en) * | 2017-10-18 | 2018-01-12 | 力聚热力设备科技有限公司 | Air supply plant in slit-aperture type flame combustion apparatus |
| CN107588421A (en) * | 2017-10-18 | 2018-01-16 | 力聚热力设备科技有限公司 | A kind of slit-aperture type flame combustion apparatus |
| CN107606615A (en) * | 2017-10-18 | 2018-01-19 | 力聚热力设备科技有限公司 | Combustor in slit-aperture type flame combustion apparatus |
| CN109578966A (en) * | 2018-12-04 | 2019-04-05 | 杭州联赫节能环保技术有限公司 | A kind of heat pipe evaporator |
-
2015
- 2015-12-25 CN CN201521092719.9U patent/CN205261624U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465821A (en) * | 2015-12-25 | 2016-04-06 | 力聚热力设备科技有限公司 | Cooling flame frontal surface device capable of inhibiting generation of NOx in hearth of gas-fired boiler |
| CN107575868A (en) * | 2017-10-18 | 2018-01-12 | 力聚热力设备科技有限公司 | Air supply plant in slit-aperture type flame combustion apparatus |
| CN107588421A (en) * | 2017-10-18 | 2018-01-16 | 力聚热力设备科技有限公司 | A kind of slit-aperture type flame combustion apparatus |
| CN107606615A (en) * | 2017-10-18 | 2018-01-19 | 力聚热力设备科技有限公司 | Combustor in slit-aperture type flame combustion apparatus |
| CN109578966A (en) * | 2018-12-04 | 2019-04-05 | 杭州联赫节能环保技术有限公司 | A kind of heat pipe evaporator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181012 Address after: 313200 No. 150, Sheng Ye street, Wu Kang Town, Deqing County, Huzhou, Zhejiang. Patentee after: Zhejiang Li Ju thermal energy equipment Co., Ltd. Address before: 313000 No. 150, Sheng Ye street, Wu Kang Town, Deqing County, Huzhou, Zhejiang. Patentee before: LIJU THERMAL POWER EQUIPMENT CO., LTD. |
|
| TR01 | Transfer of patent right |