CN111271718A - A device and method for blowing soot by using flue gas in a low-low temperature economizer - Google Patents
A device and method for blowing soot by using flue gas in a low-low temperature economizer Download PDFInfo
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- CN111271718A CN111271718A CN202010184485.XA CN202010184485A CN111271718A CN 111271718 A CN111271718 A CN 111271718A CN 202010184485 A CN202010184485 A CN 202010184485A CN 111271718 A CN111271718 A CN 111271718A
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- low
- flue
- temperature economizer
- low temperature
- electrostatic precipitator
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- 239000004071 soot Substances 0.000 title claims abstract description 38
- 238000007664 blowing Methods 0.000 title claims abstract description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 239000003546 flue gas Substances 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000012717 electrostatic precipitator Substances 0.000 claims abstract description 30
- 238000005243 fluidization Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 239000002918 waste heat Substances 0.000 abstract description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
- F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/006—Layout of treatment plant
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrostatic Separation (AREA)
Abstract
Description
技术领域technical field
本发明涉及火电厂锅炉低低温电除尘及烟气余热回收领域,适用于高灰环境下水平烟道内布置低低温省煤器、低温省煤器的应用领域。The invention relates to the field of low-low temperature electrostatic precipitator and flue gas waste heat recovery of boilers in thermal power plants, and is suitable for the application field of arranging low-low temperature economizers and low-temperature economizers in a horizontal flue in a high-ash environment.
背景技术Background technique
低低温电除尘技术是目前国内应用较多的一种新型除尘技术,在一定条件下可以降低比电阻,提高静电除尘器除尘效率。低低温省煤器通常采用水媒式换热,将金属换热管布置在静电除尘器前的烟道内,利用水与烟气进行间接换热,降低烟气温度,降低粉尘比电阻,从而提高静电除尘器的除尘效率,加热后的水可以回到锅炉给水或热网水进行余热回收。Low and low temperature electrostatic precipitator technology is a new type of dust removal technology that is widely used in China. Under certain conditions, it can reduce the specific resistance and improve the dust removal efficiency of electrostatic precipitators. The low and low temperature economizer usually adopts water-mediated heat exchange, and the metal heat exchange tube is arranged in the flue in front of the electrostatic precipitator, and the indirect heat exchange between water and flue gas is used to reduce the temperature of flue gas and the specific resistance of dust, thereby increasing the The dust removal efficiency of the electrostatic precipitator, the heated water can be returned to the boiler feed water or hot network water for waste heat recovery.
由于低低温省煤器通常布置在静电除尘器的水平烟道内,不可避免的出现积灰现场,目前的低低温省煤器通常采用声波吹灰器或固定旋转式蒸汽吹灰器,但这两种方式对清除低低温省煤器管束上积灰具有一定的作用,但对于在低低温省煤器底部积灰无法进行有效清除。Since the low and low temperature economizer is usually arranged in the horizontal flue of the electrostatic precipitator, the ash accumulation site is inevitable. The current low and low temperature economizer usually adopts a sonic sootblower or a fixed rotary steam sootblower, but these two This method has a certain effect on removing the ash deposits on the tube bundles of the low-low temperature economizer, but cannot effectively remove the ash deposits at the bottom of the low-low temperature economizer.
本发明拟开发一种针对低低温省煤器底部积灰进行清灰的方法。The present invention intends to develop a method for cleaning the ash deposited at the bottom of the low and low temperature economizer.
发明内容SUMMARY OF THE INVENTION
为使低低温省煤器底部积灰能有效清除。本发明的技术方案以如下方式实现:In order to effectively remove the ash deposits at the bottom of the low and low temperature economizer. The technical scheme of the present invention is realized in the following manner:
一种用于低低温省煤器利用烟气吹灰的装置和方法,其特征在于,它包括低低温省煤器(或低温省煤器)、低低温省煤器进口烟道、低低温省煤器出口烟道、静电除尘器、静电除尘器出口烟道、吹灰烟道、吹灰风机、吹灰风机进口挡板门、吹灰风机出口挡板门、布风管、流化板。A device and method for low-low temperature economizer using flue gas soot blowing, characterized in that it comprises a low-low temperature economizer (or low-temperature economizer), a low-low temperature economizer inlet flue, a low-low temperature economizer, and a low-low temperature economizer. Coaler outlet flue, electrostatic precipitator, electrostatic precipitator outlet flue, soot blowing flue, soot blower, soot blower inlet baffle door, soot blower outlet baffle door, air distribution pipe, fluidization plate.
当低低温省煤器投入运行时,从静电除尘器出口烟道内抽取经除尘后的洁净烟气,经风机加压后与低低温省煤器底部壳体的布风管连接,将空气通入流化板,将底部积灰流化后由烟气带走。When the low and low temperature economizer is put into operation, the clean flue gas after dedusting is extracted from the outlet flue of the electrostatic precipitator, and after being pressurized by the fan, it is connected to the air distribution pipe of the bottom shell of the low and low temperature economizer, and the air is passed into the flow The ash at the bottom is fluidized and taken away by the flue gas.
所述通过低低温省煤器出口烟道与静电除尘器连接;所述静电除尘器出口烟道布置在静电除尘器出口;所述吹灰烟道连接低低温省煤器底部壳体和静电除尘器出口烟道;所述吹灰风机进口挡板门、吹灰风机、风机出口挡板门、布风管、流化板依次布置在吹灰烟道上;所述流化板为半球形结构,均匀布置在低低温省煤器壳体底部;所述布风管水平接入流化板。The outlet flue of the low and low temperature economizer is connected to the electrostatic precipitator; the outlet flue of the electrostatic precipitator is arranged at the outlet of the electrostatic precipitator; the soot blowing flue is connected to the bottom shell of the low and low temperature economizer and the electrostatic precipitator The soot blower outlet flue; the soot blower inlet baffle door, the soot blower, the fan outlet baffle door, the air distribution pipe, and the fluidization plate are sequentially arranged on the soot blower flue; the fluidization plate is a hemispherical structure, It is evenly arranged at the bottom of the low and low temperature economizer shell; the air distribution pipe is horizontally connected to the fluidization plate.
所述低低温省煤器(低温省煤器)换热管采用光管、螺旋翅片、H型翅片或双H型翅片型式,换热管材质采用20钢、ND钢、不锈钢管等。The low and low temperature economizer (low temperature economizer) heat exchange tube adopts the type of plain tube, spiral fin, H-shaped fin or double H-shaped fin, and the heat exchange tube is made of 20 steel, ND steel, stainless steel tube, etc. .
下面结合附图和具体实施方式对发明做进一步说明。The invention will be further described below with reference to the accompanying drawings and specific embodiments.
附图说明Description of drawings
下面结合附图和具体实施方式对本发明做进一步说明。The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
图1是本发明专利的工艺流程示意图。Fig. 1 is the process flow schematic diagram of the patent of the present invention.
图中:1. 低低温省煤器、2. 低低温省煤器进口烟道、3. 低低温省煤器出口烟道、4. 静电除尘器、5.静电除尘器出口烟道、6. 吹灰烟道、7. 吹灰风机、8. 吹灰风机进口挡板门、9. 吹灰风机出口挡板门、10.布风管、11.流化板。In the picture: 1. Low and low temperature economizer, 2. Low and low temperature economizer inlet flue, 3. Low and low temperature economizer outlet flue, 4. Electrostatic precipitator, 5. Electrostatic precipitator outlet flue, 6. Soot blowing flue, 7. Soot blower, 8. Soot blower inlet baffle door, 9. Soot blower outlet baffle door, 10. Air distribution duct, 11. Fluidization plate.
具体实施方式Detailed ways
参看图1,一种用于低低温省煤器利用烟气吹灰的装置和方法,其特征在于,它包括低低温省煤器(或低温省煤器)(1)、低低温省煤器进口烟道(2)、低低温省煤器出口烟道(3)、静电除尘器(4)、静电除尘器出口烟道(5)、吹灰烟道(6)、吹灰风机(7)、吹灰风机进口挡板门(8)、吹灰风机出口挡板门(9)、布风管(10)、流化板(11)。1, a device and method for low-low temperature economizer utilizing flue gas soot blowing is characterized in that it comprises a low-low temperature economizer (or low-temperature economizer) (1), a low-low temperature economizer Inlet flue (2), low and low temperature economizer outlet flue (3), electrostatic precipitator (4), electrostatic precipitator outlet flue (5), soot blowing flue (6), soot blower (7) , soot blower inlet baffle door (8), soot blower outlet baffle door (9), air distribution pipe (10), fluidization plate (11).
所述低低温省煤器出口烟道(3)与静电除尘器(4)连接;所述静电除尘器出口烟道(5)布置在静电除尘器(4)出口;所述吹灰烟道(6)连接低低温省煤器(1)底部壳体和静电除尘器出口烟道(5);所述吹灰风机进口挡板门(8)、吹灰风机(7)、风机出口挡板门(9)、布风管(10)、流化板(11)依次布置在吹灰烟道(6)上;所述流化板(11)为弧形结构,均匀布置在低低温省煤器(1)壳体底部;所述布风管(10)水平接入流化板(11)。The outlet flue (3) of the low-low temperature economizer is connected with the electrostatic precipitator (4); the outlet flue (5) of the electrostatic precipitator is arranged at the outlet of the electrostatic precipitator (4); the soot blowing flue ( 6) Connect the bottom shell of the low and low temperature economizer (1) and the outlet flue of the electrostatic precipitator (5); the inlet baffle door (8), the soot blower (7), and the fan outlet baffle door of the soot blower (9) The air distribution pipe (10) and the fluidizing plate (11) are arranged on the soot blowing flue (6) in sequence; the fluidizing plate (11) is of an arc structure and is evenly arranged on the low-low temperature economizer (1) The bottom of the casing; the air distribution pipe (10) is horizontally connected to the fluidization plate (11).
图1所述系统中,静电除尘器(4)正常运行时,无论低低温省煤器(1)是否处于投运状态,抽取静电除尘器出口烟道(5)中已除尘后的烟气进入吹灰烟道(6),经吹灰风机(7)加压后,将烟气通过布风管(10)均匀鼓入流化板(11),流化板(11)避开低低温省煤器(1)底部支座,均匀布置在低低温省煤器(1)底部壳体上,鼓入流化板(11)内的空气将底部积灰流化,使其具备更好的流动性,便于主烟气携带,从而达到减少低低温省煤器(1)底部积灰的目的。In the system shown in Fig. 1, when the electrostatic precipitator (4) is in normal operation, regardless of whether the low-low temperature economizer (1) is in operation or not, the dust-removed flue gas from the outlet flue (5) of the electrostatic precipitator is extracted into the system. The soot blowing flue (6), after being pressurized by the soot blower (7), blows the flue gas evenly into the fluidized plate (11) through the air distribution pipe (10), and the fluidized plate (11) avoids low and low temperature and saves coal The bottom support of the economizer (1) is evenly arranged on the bottom shell of the low and low temperature economizer (1). It is convenient for the main flue gas to be carried, so as to achieve the purpose of reducing the ash accumulation at the bottom of the low and low temperature economizer (1).
本发明运行成本低、检修和运行维护方便。The invention has low operation cost, convenient maintenance and operation and maintenance.
上述仅为本发明的具体实施方式,本发明的技术特征并非局限于此,任何本领域的技术人员在本发明的领域内所作的变化或修饰均应纳入本发明的专利范围之中。The above are only specific embodiments of the present invention, and the technical features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art in the field of the present invention should be included in the patent scope of the present invention.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113834083A (en) * | 2021-11-03 | 2021-12-24 | 西安热工研究院有限公司 | System for preventing induced draft fan from stalling and working method thereof |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN203099860U (en) * | 2012-12-24 | 2013-07-31 | 华泰集团有限公司 | Fluidifying ash conveying and discharging device below boiler economizer |
CN103307617A (en) * | 2013-06-05 | 2013-09-18 | 西安热工研究院有限公司 | Pneumatic dust cleaning device of boiler |
CN208536019U (en) * | 2018-06-20 | 2019-02-22 | 中国华电科工集团有限公司 | The deashing device of novel low low-level (stack-gas) economizer |
CN109442445A (en) * | 2018-10-16 | 2019-03-08 | 华电电力科学研究院有限公司 | A kind of novel soot blower system and its working method for station boiler horizontal flue |
CN110743301A (en) * | 2019-10-18 | 2020-02-04 | 华电电力科学研究院有限公司 | Coal-fired power plant electric bag dust removal system and method |
CN212673251U (en) * | 2020-03-17 | 2021-03-09 | 北京龙电宏泰环保科技有限公司 | Device for blowing soot by using flue gas for low-temperature economizer |
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- 2020-03-17 CN CN202010184485.XA patent/CN111271718A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN203099860U (en) * | 2012-12-24 | 2013-07-31 | 华泰集团有限公司 | Fluidifying ash conveying and discharging device below boiler economizer |
CN103307617A (en) * | 2013-06-05 | 2013-09-18 | 西安热工研究院有限公司 | Pneumatic dust cleaning device of boiler |
CN208536019U (en) * | 2018-06-20 | 2019-02-22 | 中国华电科工集团有限公司 | The deashing device of novel low low-level (stack-gas) economizer |
CN109442445A (en) * | 2018-10-16 | 2019-03-08 | 华电电力科学研究院有限公司 | A kind of novel soot blower system and its working method for station boiler horizontal flue |
CN110743301A (en) * | 2019-10-18 | 2020-02-04 | 华电电力科学研究院有限公司 | Coal-fired power plant electric bag dust removal system and method |
CN212673251U (en) * | 2020-03-17 | 2021-03-09 | 北京龙电宏泰环保科技有限公司 | Device for blowing soot by using flue gas for low-temperature economizer |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113834083A (en) * | 2021-11-03 | 2021-12-24 | 西安热工研究院有限公司 | System for preventing induced draft fan from stalling and working method thereof |
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