CN103830995A - Dry desulfurization spray nozzle - Google Patents
Dry desulfurization spray nozzle Download PDFInfo
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- CN103830995A CN103830995A CN201310698559.1A CN201310698559A CN103830995A CN 103830995 A CN103830995 A CN 103830995A CN 201310698559 A CN201310698559 A CN 201310698559A CN 103830995 A CN103830995 A CN 103830995A
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- wind
- pipe
- spray nozzle
- dry desulfurization
- spraying
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Abstract
The invention discloses a dry desulfurization spray nozzle, comprising a wind spraying pipe. A rear end of the wind spraying pipe is a wind port; the wind port is connected to a wind source; the wind spraying pipe is a conical pipe with the diameter of the rear end larger than that of the front end; and the front end of the wind spraying pipe is provided with a wind spraying port. An inner diameter of the front part of the spray nozzle is smaller than that of the rear part of the spray pipe, thereby achieving relatively far spraying distance and spraying range under relatively small wind pressure and wind volume. The upper part and the rear part of the spray nozzle are provided with flanges which can be connected to different wind sources. Primary wind or secondary wind can be selected as the wind source to adapt different load of the boiler, according to different actual operation conditions of a circulating fluidized bed boiler. The spray nozzle is made of ZG4Cr26Ni6Mn3NRe and is wear-resistant and high temperature resistance, thereby having long service life.
Description
Technical field
The present invention relates to a kind of servicing unit of circulation fluidized bed boiler dry method desulfurizing, relate in particular to a kind of dry desulfurization nozzle.
Background technology
CFBB dry method calcium injection and desulfurization is connected nozzle is set conventionally with burner hearth, and the structure of nozzle mostly is straight tube.Spray into the efficiency that the desulfurizing agent-calcium powder of burner hearth and the mixability of fuel directly have influence on CFBB dry method calcium injection and desulfurization, if nozzle adopts straight tube to reach jet length far away, larger spray regime needs higher wind speed or larger air quantity conventionally, need to arrange that multiple nozzles cause equipment power consumption to increase, desulfuration efficiency is poor simultaneously; Conventional dry desulfurization nozzle material type selecting is improper simultaneously can not be high temperature resistant, wear-resisting, once damage in boiler operatiopn, must blowing out replacing cause certain economic loss.
Summary of the invention
The object of this invention is to provide a kind of dry desulfurization nozzle, long service life, jeting effect is good, desulfuration efficiency is high.
For achieving the above object, the technical solution used in the present invention is:
A kind of dry desulfurization nozzle, comprises blast pipe, it is characterized in that: the rear end of blast pipe is the mouth of giving a dinner for a visitor from afar, mouthful connection wind regime of giving a dinner for a visitor from afar, and blast pipe is the conical pipe that rear end diameter is greater than point diameter, the front end of blast pipe is air nozzle.
According to described dry desulfurization nozzle, it is characterized in that: in the middle of described blast pipe, the side of conical pipe is provided with desulfurizing agent spout.
According to described dry desulfurization nozzle, it is characterized in that: the rear end of described blast pipe is provided with flange.
According to described dry desulfurization nozzle, it is characterized in that: the rear end of described desulfurizing agent spout is provided with flange.
Advantageous effect of the present invention is: the anterior internal diameter of nozzle in the present invention is less than the internal diameter at jet pipe rear portion, can under less blast and air quantity, obtain jet length and spray regime far away; On nozzle top and rear portion be equipped with flange and can connect different wind regimes, practical operation situation that can be different according to CFBB, can select wind or Secondary Air as wind regime, is suitable for boiler different load; Nozzle adopts ZG4Cr26Ni6Mn3NRe material, wear-resisting, high temperature resistant, so long service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of nozzle in prior art.
In accompanying drawing: 1, the mouth of giving a dinner for a visitor from afar; 2, blast pipe; 3, air nozzle; 4, desulfurizing agent spout.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
As shown in Figure 1, a kind of dry desulfurization nozzle, comprises blast pipe 2, it is characterized in that in the present invention: the rear end of blast pipe 2 is to give a dinner for a visitor from afar mouthful 1, gives a dinner for a visitor from afar mouthful 1 to connect a wind regime, and blast pipe 2 is greater than the conical pipe of point diameter for rear end diameter, and the front end of blast pipe 2 is air nozzle 3.According to described dry desulfurization nozzle, it is characterized in that: in the middle of described blast pipe 2, the side of conical pipe is provided with desulfurizing agent spout 4.According to described dry desulfurization nozzle, it is characterized in that: the rear end of described blast pipe 2 is provided with flange.According to described dry desulfurization nozzle, it is characterized in that: the rear end of described desulfurizing agent spout 4 is provided with flange.
Concrete condition of the present invention is as described below, former wind regime is changed into after two interfaces, can be under boiler at low load state, adopt under wind, higher load condition and adopt Secondary Air, effective and reasonable utilize wind regimes different under boiler different load, reach the object of saving energy consumption.Adopt ZG4Cr26Ni6Mn3NRe material working nozzle, improved the high temperature resistant and wearability of equipment, reduced plant maintenance, avoided boiler shutdown to process nozzle fault, improved the stability of boiler operatiopn.The present invention brings up to 80m/s by the wind speed after original ejection by original about 50m/s by reducing, jet length and scope are improved, on probation on 75t/h CFBB, in the situation that arranging two nozzles of offside, the calcium powder spraying into can cover whole section of burner hearth completely, the Mixing zone of calcium powder and boiler oil is improved effectively, under same calcium sulfur ratio, can improve desulfuration efficiency 10% ~ 15% by contrast test.Blast pipe 2 is conical pipe, so just the wind speed of air nozzle 3 is greater than give a dinner for a visitor from afar mouthful 1 wind speed.
The anterior internal diameter of nozzle in the present invention is less than the internal diameter at jet pipe rear portion, can under less blast and air quantity, obtain jet length and spray regime far away; On nozzle top and rear portion be equipped with flange and can connect different wind regimes, practical operation situation that can be different according to CFBB, can select wind or Secondary Air as wind regime, is suitable for boiler different load; Nozzle adopts ZG4Cr26Ni6Mn3NRe material, wear-resisting, high temperature resistant, so long service life.
Embodiment recited above is described the preferred embodiment of the present invention; not design of the present invention and protection domain are limited; do not departing under the prerequisite of design concept of the present invention; various modification and improvement that in this area, common engineers and technicians make technical scheme of the present invention, all should fall into protection scope of the present invention.
Claims (4)
1. a dry desulfurization nozzle, comprise blast pipe (2), it is characterized in that: the rear end of blast pipe (2) is give a dinner for a visitor from afar mouthful (1), give a dinner for a visitor from afar mouthful (1) connects wind regime, blast pipe (2) is greater than the conical pipe of point diameter for rear end diameter, and the front end of blast pipe (2) is air nozzle (3).
2. dry desulfurization nozzle according to claim 1, is characterized in that: in the middle of described blast pipe (2), the side of conical pipe is provided with desulfurizing agent spout (4).
3. dry desulfurization nozzle according to claim 1, is characterized in that: the rear end of described blast pipe (2) is provided with flange.
4. dry desulfurization nozzle according to claim 2, is characterized in that: the rear end of described desulfurizing agent spout (4) is provided with flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310698559.1A CN103830995A (en) | 2013-12-19 | 2013-12-19 | Dry desulfurization spray nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310698559.1A CN103830995A (en) | 2013-12-19 | 2013-12-19 | Dry desulfurization spray nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103830995A true CN103830995A (en) | 2014-06-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310698559.1A Pending CN103830995A (en) | 2013-12-19 | 2013-12-19 | Dry desulfurization spray nozzle |
Country Status (1)
| Country | Link |
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| CN (1) | CN103830995A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001149747A (en) * | 1999-12-01 | 2001-06-05 | Hitachi Plant Eng & Constr Co Ltd | Gaseous ammonia injection device |
| CN2774619Y (en) * | 2004-06-12 | 2006-04-26 | 横店集团东磁有限公司 | Smoke dust-removing and desulfurizing system |
| CN201195099Y (en) * | 2008-05-29 | 2009-02-18 | 东北电力大学 | Flue gas desulfurization column of circulating fluidized bed |
| US20100047147A1 (en) * | 2008-08-22 | 2010-02-25 | Gatton Jr Lawrence H | Circulating fluidized bed power plant having integrated sulfur dioxide scrubber system with lime feed |
| CN201454412U (en) * | 2009-06-04 | 2010-05-12 | 哈尔滨电站设备成套设计研究所 | Calcium-spurting desulfurization equipment of circulating fluidized bed boiler |
| CN203663674U (en) * | 2013-12-19 | 2014-06-25 | 枣庄矿业(集团)付村矸石热电有限公司 | Dry desulfurization spray nozzle |
-
2013
- 2013-12-19 CN CN201310698559.1A patent/CN103830995A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001149747A (en) * | 1999-12-01 | 2001-06-05 | Hitachi Plant Eng & Constr Co Ltd | Gaseous ammonia injection device |
| CN2774619Y (en) * | 2004-06-12 | 2006-04-26 | 横店集团东磁有限公司 | Smoke dust-removing and desulfurizing system |
| CN201195099Y (en) * | 2008-05-29 | 2009-02-18 | 东北电力大学 | Flue gas desulfurization column of circulating fluidized bed |
| US20100047147A1 (en) * | 2008-08-22 | 2010-02-25 | Gatton Jr Lawrence H | Circulating fluidized bed power plant having integrated sulfur dioxide scrubber system with lime feed |
| CN201454412U (en) * | 2009-06-04 | 2010-05-12 | 哈尔滨电站设备成套设计研究所 | Calcium-spurting desulfurization equipment of circulating fluidized bed boiler |
| CN203663674U (en) * | 2013-12-19 | 2014-06-25 | 枣庄矿业(集团)付村矸石热电有限公司 | Dry desulfurization spray nozzle |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140604 |