CN102974582B - A pulse nozzle for cleaning high-temperature coke oven raw gas pipeline - Google Patents
A pulse nozzle for cleaning high-temperature coke oven raw gas pipeline Download PDFInfo
- Publication number
- CN102974582B CN102974582B CN201210496486.3A CN201210496486A CN102974582B CN 102974582 B CN102974582 B CN 102974582B CN 201210496486 A CN201210496486 A CN 201210496486A CN 102974582 B CN102974582 B CN 102974582B
- Authority
- CN
- China
- Prior art keywords
- nozzle
- pipeline
- coke oven
- pipe
- raw gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000571 coke Substances 0.000 title claims abstract description 21
- 238000004140 cleaning Methods 0.000 title abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 40
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 238000007664 blowing Methods 0.000 claims abstract description 6
- 238000009413 insulation Methods 0.000 claims description 18
- 239000003245 coal Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims 2
- 239000000428 dust Substances 0.000 abstract description 8
- 238000012546 transfer Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012824 chemical production Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Landscapes
- Cleaning In General (AREA)
- Coke Industry (AREA)
Abstract
Description
技术领域 technical field
本发明涉及清洁技术领域，特别涉及一种利用压缩氮气对高温焦炉荒煤气管道进行清洁的脉冲喷嘴。The invention relates to the field of cleaning technology, in particular to a pulse nozzle for cleaning high-temperature coke oven raw gas pipelines by using compressed nitrogen.
背景技术 Background technique
随着炼焦工艺和化工处理的新技术的研究开发，国内开始出现或即将应用将高温荒煤气导出到废热锅炉进行热量置换后再进入化产车间的新处理工艺，这种工艺的出现节约了能源，但同时也带来了一些技术难题，其中高温焦炉荒煤气管道易堵塞就是其中一个常见问题，在实践中发现，高温焦炉荒煤气管道经常堵塞，特别是管道保温不佳的情况下焦油易凝结在管壁上，烟气中的固体颗粒沉降在其表面形成一个板结层，最终导致管道的流动截面减少，从而改变了整个管道系统的水力学特性，从流体力学的知识可知道，当管道截面减少，管道的阻力加大，水力特性曲线会变陡，而引风机的风机性能曲线是一定的，这样工作点会左移，最终的结果是风机的压头变大，但是其工作点流量减少，如果管道截面减少的影响小于流量减少的影响时，将进一步导致了管道内流速下降，从而导致大的固体颗粒的沉降，从而堵塞进一步加剧。With the research and development of new technologies for coking process and chemical treatment, a new treatment process of exporting high-temperature raw gas to waste heat boilers for heat replacement and then entering chemical production workshops has begun to appear or will be applied in China. The emergence of this process saves energy. , but it also brings some technical problems. One of the common problems is that the high-temperature coke oven raw gas pipeline is easy to block. In practice, it is found that the high-temperature coke oven raw gas pipeline is often blocked, especially when the pipeline insulation is not good It is easy to condense on the pipe wall, and the solid particles in the flue gas settle on its surface to form a hardened layer, which eventually leads to the reduction of the flow section of the pipe, thus changing the hydraulic characteristics of the entire pipe system. From the knowledge of fluid mechanics, when The pipe cross-section decreases, the resistance of the pipe increases, and the hydraulic characteristic curve becomes steeper. However, the fan performance curve of the induced draft fan is fixed, so the working point will shift to the left. The final result is that the pressure head of the fan becomes larger, but its working point If the flow rate is reduced, if the effect of the reduction of the pipe section is less than the effect of the flow reduction, it will further lead to a decrease in the flow rate in the pipe, which will lead to the settlement of large solid particles, and the blockage will be further aggravated.
同时高温荒煤气管道具有以下特点：(1)管内流动的是高温荒煤气，每标立中含有焦油量高达80～120克。由于焦油在450℃左右时就开始析出，易粘结在管壁上，虽然高温荒煤气温度在700℃以上，但是当管道保温不好时管壁温度会出现温度低于450℃的情况；（2）高温荒煤气管道内截面流速不均匀，当焦炉装煤时产生大量烟气，含尘量也高，甚至有较大粒径的固体颗粒进入管道，烟气温度也有波动，但当结焦末期烟气量减少，含尘量也减少，管道截面流速下降，因此这种不均匀性容易导致尘粒沉降，焦油析出，最终易造成管道的堵塞。Simultaneously, the high-temperature raw gas pipeline has the following characteristics: (1) what flows in the pipe is high-temperature raw gas, which contains a tar amount up to 80-120 grams per standard. Since tar begins to precipitate at about 450°C, it is easy to stick to the pipe wall. Although the temperature of high-temperature raw gas is above 700°C, the temperature of the pipe wall will be lower than 450°C when the pipe insulation is not good; ( 2) The cross-sectional flow velocity in the high-temperature raw gas pipeline is uneven. When the coke oven is charged with coal, a large amount of flue gas is generated, and the dust content is also high. Even solid particles with larger particle sizes enter the pipeline, and the temperature of the flue gas also fluctuates. In the final stage, the amount of flue gas is reduced, the dust content is also reduced, and the cross-sectional flow velocity of the pipe is reduced. Therefore, this unevenness will easily lead to the settlement of dust particles, the precipitation of tar, and eventually the blockage of the pipe.
发明内容 Contents of the invention
本发明的目的是提供一种清洁高温焦炉荒煤气管道的脉冲喷嘴，通过喷吹0.2~0.4MPa的压缩氮气，靠脉冲阀和管道喷嘴瞬间喷出一股很强的氮气流，同时引射形成一股充满整个管道截面的高速气流，将管道内的积灰携带走。同时本喷嘴带有保温套管，可以大大减少高温荒煤气通过喷嘴对外的热量传递，提高高温荒煤气的热利用效率。The purpose of the present invention is to provide a pulse nozzle for cleaning high-temperature coke oven raw gas pipelines. By injecting compressed nitrogen gas of 0.2-0.4 MPa, a strong nitrogen flow is instantly ejected by the pulse valve and the pipeline nozzle, and ejected at the same time. Form a high-speed airflow that fills the entire pipe section, and carry away the accumulated dust in the pipe. At the same time, the nozzle is equipped with an insulating sleeve, which can greatly reduce the heat transfer of the high-temperature raw gas through the nozzle, and improve the heat utilization efficiency of the high-temperature raw gas.
为实现上述目的，本发明采用以下技术方案实现：To achieve the above object, the present invention adopts the following technical solutions:
一种清洁高温焦炉荒煤气管道的脉冲喷嘴，包括连接法兰、连接管、保温套管和弧形管喷头，连接管一端通过连接法兰与外部氮气喷吹管道相连接，喷吹介质为0.2~0.4MPa的压缩氮气；连接管另一端与弧形管喷头相连接，所述的弧形管喷头紧贴焦炉荒煤气管道内径，其迎着管内荒煤气流动方向的一端制成楔形结构。A pulse nozzle for cleaning high-temperature coke oven raw gas pipelines, including a connecting flange, a connecting pipe, a thermal insulation sleeve and an arc pipe nozzle, one end of the connecting pipe is connected to an external nitrogen injection pipe through a connecting flange, and the blowing medium is 0.2~0.4MPa compressed nitrogen; the other end of the connecting pipe is connected with the nozzle of the arc tube, the nozzle of the arc tube is close to the inner diameter of the coke oven raw gas pipeline, and its end facing the flow direction of the raw gas in the pipe is made into a wedge-shaped structure .
所述的弧形管喷头弧度为90°-120°。The arc of the arc tube nozzle is 90°-120°.
所述的连接管外侧设有保温套管，保温套管两端分别与连接管和弧形管喷头连续焊接，保温套管外壁与被喷吹清洁的高温荒煤气管道连续焊接。The outer side of the connecting pipe is provided with a thermal insulation sleeve, the two ends of the thermal insulation sleeve are respectively continuously welded with the connecting pipe and the nozzle of the arc pipe, and the outer wall of the thermal insulation sleeve is continuously welded with the high-temperature raw gas pipeline cleaned by injection.
与现有的技术相比，本发明的有益效果是：Compared with prior art, the beneficial effect of the present invention is:
一种清洁高温焦炉荒煤气管道的脉冲喷嘴，具有成本低、结构简单、设计合理、易于加工，安全可靠 ，使用寿命长，保温性能好的特点，由于连接管外侧设有保温套管，这样便形成了一层封闭的空气层起到保温隔热的作用，减少了因为安装本喷嘴而导致的高温荒煤气管道内部向外部的热量传递，减少了热损失；由于弧形管喷头紧贴高温焦炉荒煤气管壁，保证了喷吹的压缩氮气扩散引射后能充满整个被喷吹管的内截面，同时弧形管喷头的一端加工成楔形，减少了烟气的流动阻力和积尘风险。A pulse nozzle for cleaning high-temperature coke oven raw gas pipelines, which has the characteristics of low cost, simple structure, reasonable design, easy processing, safety and reliability, long service life, and good thermal insulation performance. A closed air layer is formed to play the role of thermal insulation, which reduces the heat transfer from the inside to the outside of the high-temperature raw gas pipeline caused by the installation of this nozzle, and reduces heat loss; The wall of the raw gas pipe of the coke oven ensures that the injected compressed nitrogen gas can fill the entire inner section of the pipe to be injected after being diffused and ejected. At the same time, one end of the curved pipe nozzle is processed into a wedge shape, which reduces the flow resistance of the flue gas and the risk of dust accumulation .
附图说明 Description of drawings
图1 是本发明的结构图；Fig. 1 is a structural diagram of the present invention;
图2 是本发明图1的剖面图。Fig. 2 is the sectional view of Fig. 1 of the present invention.
1—连接法兰 2—连接管 3—保温套管 4—弧形管喷头5—带有保温层的高温荒煤气管道 6-楔形结构 7-脉冲喷吹方向 8-管内高温焦炉荒煤气流动方向1—Connecting flange 2—Connecting pipe 3—Insulation sleeve 4—Arc pipe nozzle 5—High temperature raw gas pipeline with insulation layer 6-Wedge-shaped structure 7-Pulse injection direction 8-High temperature coke oven raw gas flow in the pipe direction
具体实施方式 Detailed ways
下面结合附图对本发明的具体实施方式进一步说明：The specific embodiment of the present invention is further described below in conjunction with accompanying drawing:
如图1和图2所示，本发明一种清洁高温焦炉荒煤气管道的脉冲喷嘴，包括连接法兰1、连接管2、保温套管3和弧形管喷头4，连接管2一端通过连接法兰1与外部氮气喷吹管道相连接，喷吹介质为0.2~0.4MPa的压缩氮气；连接管2另一端与弧形管喷头4相连接，所述的弧形管喷头4紧贴焦炉荒煤气管道内径，其迎着管内高温焦炉荒煤气流动方向8的一端制成楔形结构6。所述的弧形管喷头4弧形的曲率半径等于被喷吹高温焦炉荒煤气管道的内径，保证其紧贴高温焦炉荒煤气管壁；其弧度一般为90°，具体可根据被喷吹管内径大小加以调整，以使喷吹的压缩氮气扩散引射后能充满整个被喷吹管的内截面；本弧形管喷头的一端加工成楔形，以减少流动阻力和积尘风险。在连接管2外侧设有保温套管，可以大大减少高温荒煤气通过喷嘴对外的热量传递，提高高温荒煤气的热利用效率。保温套管3两端分别与连接管2和弧形管喷头4连续焊接，要求严密不漏；保温套管3外壁与被喷吹清洁的高温荒煤气管道连续焊接，严密不漏。As shown in Figures 1 and 2, a pulse nozzle for cleaning high-temperature coke oven raw gas pipelines according to the present invention includes a connecting flange 1, a connecting pipe 2, a thermal insulation sleeve 3 and an arc-shaped pipe nozzle 4, and one end of the connecting pipe 2 passes through the The connecting flange 1 is connected with the external nitrogen injection pipeline, and the injection medium is compressed nitrogen gas of 0.2~0.4MPa; the other end of the connecting pipe 2 is connected with the arc tube nozzle 4, and the arc tube nozzle 4 is close to The inner diameter of the raw gas pipeline of the furnace is made into a wedge-shaped structure 6 at one end facing the flow direction 8 of the high-temperature raw gas of the coke oven in the pipe. The radius of curvature of the curved pipe nozzle 4 arc is equal to the inner diameter of the high-temperature coke oven raw gas pipeline to be sprayed to ensure that it is close to the wall of the high-temperature coke oven raw gas pipe; The inner diameter of the blowpipe is adjusted so that the injected compressed nitrogen gas can fill the entire inner section of the blown pipe after being diffused and ejected; one end of the arc-shaped pipe nozzle is processed into a wedge shape to reduce flow resistance and dust accumulation risk. An insulating sleeve is provided on the outer side of the connecting pipe 2, which can greatly reduce the heat transfer of the high-temperature raw gas through the nozzle, and improve the heat utilization efficiency of the high-temperature raw gas. The two ends of the thermal insulation sleeve 3 are continuously welded with the connecting pipe 2 and the arc pipe nozzle 4 respectively, which requires tightness; the outer wall of the thermal insulation sleeve 3 is continuously welded with the high-temperature raw gas pipeline cleaned by blowing, and it is tight without leakage.
使用本装置时，首先将连接法兰1与清洁装置相连接，然后将弧形管喷头4设置于带有保温层的高温荒煤气管道5内，启动清洁装置，喷吹介质是 0.2~0.4MPa的压缩氮气；压缩氮气通过连接管2和弧形管喷头4喷入带有保温层的高温荒煤气管道5内，压缩氮气在带有保温层的高温荒煤气管道5内扩散引射形成一股充满整个管道截面的喷吹气流，将已沉降的烟尘或即将沉降的烟尘吹离易沉降管段。When using this device, first connect the connecting flange 1 to the cleaning device, then set the arc-shaped nozzle 4 in the high-temperature raw gas pipeline 5 with insulation layer, start the cleaning device, and the blowing medium is 0.2~0.4MPa Compressed nitrogen; compressed nitrogen is sprayed into the high-temperature raw gas pipeline 5 with an insulating layer through the connecting pipe 2 and the arc-shaped nozzle 4, and the compressed nitrogen is diffused and ejected in the high-temperature raw gas pipeline 5 with an insulating layer to form a stream The blowing air flow that fills the entire pipe section blows the dust that has settled or the smoke that is about to settle away from the pipe section that is easy to settle.
上面所述仅是本发明的基本原理，并非对本发明作任何限制，凡是依据本发明对其进行等同变化和修饰，均在本专利技术保护方案的范畴之内。The above is only the basic principle of the present invention, and does not limit the present invention in any way. All equivalent changes and modifications according to the present invention are within the scope of the technical protection scheme of this patent.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210496486.3A CN102974582B (en) | 2012-11-28 | 2012-11-28 | A pulse nozzle for cleaning high-temperature coke oven raw gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210496486.3A CN102974582B (en) | 2012-11-28 | 2012-11-28 | A pulse nozzle for cleaning high-temperature coke oven raw gas pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102974582A CN102974582A (en) | 2013-03-20 |
| CN102974582B true CN102974582B (en) | 2015-06-24 |
Family
ID=47849092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210496486.3A Active CN102974582B (en) | 2012-11-28 | 2012-11-28 | A pulse nozzle for cleaning high-temperature coke oven raw gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102974582B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7078014B2 (en) * | 2019-05-21 | 2022-05-31 | Ｊｆｅスチール株式会社 | Sediment removal device and sediment removal method |
| CN113958868B (en) * | 2021-10-27 | 2024-11-05 | 中冶焦耐(大连)工程技术有限公司 | A high-temperature raw gas transmission method and pipeline system |
| CN116237323A (en) * | 2023-02-24 | 2023-06-09 | 新疆八一钢铁股份有限公司 | A method for washing furnace with carbon deposits in hearth |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2739486Y (en) * | 2004-10-15 | 2005-11-09 | 南京大陆中电科技股份有限公司 | Conductive pipe with gas source |
| CN101672479A (en) * | 2009-07-29 | 2010-03-17 | 东方锅炉（集团）股份有限公司 | Sweeping device for dust deposit in flue |
| CN201930947U (en) * | 2010-11-23 | 2011-08-17 | 合肥水泥研究设计院 | Device for sweeping dust accumulated in pipeline |
| CN202411051U (en) * | 2011-12-01 | 2012-09-05 | 浙江博凡动力装备有限公司 | Pipeline cleaner |
| CN102773234A (en) * | 2012-07-31 | 2012-11-14 | 苏州南风优联环保工程有限公司 | Convenient washing device for pipeline |
| CN202951685U (en) * | 2012-11-28 | 2013-05-29 | 中冶焦耐工程技术有限公司 | A pulse nozzle for cleaning high-temperature coke oven raw gas pipeline |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0632799B2 (en) * | 1988-10-29 | 1994-05-02 | 日本施設保全株式会社 | Method of cleaning oil and fat adhering to pipeline |
| JP2002039019A (en) * | 2000-07-24 | 2002-02-06 | Hino Motors Ltd | EGR cooler and cleaning method thereof |
-
2012
- 2012-11-28 CN CN201210496486.3A patent/CN102974582B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2739486Y (en) * | 2004-10-15 | 2005-11-09 | 南京大陆中电科技股份有限公司 | Conductive pipe with gas source |
| CN101672479A (en) * | 2009-07-29 | 2010-03-17 | 东方锅炉（集团）股份有限公司 | Sweeping device for dust deposit in flue |
| CN201930947U (en) * | 2010-11-23 | 2011-08-17 | 合肥水泥研究设计院 | Device for sweeping dust accumulated in pipeline |
| CN202411051U (en) * | 2011-12-01 | 2012-09-05 | 浙江博凡动力装备有限公司 | Pipeline cleaner |
| CN102773234A (en) * | 2012-07-31 | 2012-11-14 | 苏州南风优联环保工程有限公司 | Convenient washing device for pipeline |
| CN202951685U (en) * | 2012-11-28 | 2013-05-29 | 中冶焦耐工程技术有限公司 | A pulse nozzle for cleaning high-temperature coke oven raw gas pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102974582A (en) | 2013-03-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102974582B (en) | A pulse nozzle for cleaning high-temperature coke oven raw gas pipeline | |
| CN102688681B (en) | Air cooling type air atomization spray gun applicable to denitration by SNCR (selective non-catalytic reduction) method | |
| CN102962233A (en) | A high-temperature coke oven raw gas pipeline cleaning device using compressed nitrogen injection | |
| CN202951684U (en) | A high-temperature coke oven raw gas pipeline cleaning device using compressed nitrogen injection | |
| CN202951685U (en) | A pulse nozzle for cleaning high-temperature coke oven raw gas pipeline | |
| CN106402908B (en) | A burner on-line clearing device | |
| CN203212537U (en) | Super-high temperature pulse injection system | |
| CN204767872U (en) | Yellow phosphorus burner gas dry process dust removal filtration system | |
| CN202254887U (en) | Water cooling device of exhaust gas smoke tube for silicon metal smelting ore furnace | |
| CN203569023U (en) | A sealing device for a tamping coke oven roof flue gas conversion vehicle | |
| CN201652407U (en) | an air preheater | |
| CN104729309A (en) | Efficient back-blowing decoking method for flue gas waste heat recovery system | |
| CN201545803U (en) | A New Coke Oven Gas Regulating Device | |
| CN107300185B (en) | Spray head and soot blower | |
| CN201368458Y (en) | Novel regenerative burner | |
| CN204421654U (en) | The hermetically-sealed construction of swing type movable flue | |
| CN108246732A (en) | A kind of device for preventing RH stove main vacuum manifold telescopic joints gap from blocking | |
| CN222274457U (en) | A coke oven body internal cleaning device | |
| CN204933701U (en) | High temperature electrostatic deduster insulator blow device | |
| CN202853412U (en) | Totally-enclosed direct-current electric arc furnace tail gas smoke tube device | |
| CN207865416U (en) | Novel waste heat boiler deashing device | |
| CN202853410U (en) | Horizontal flue pipe | |
| CN205447789U (en) | Residue discharging device for garbage cracking furnaces | |
| CN205102141U (en) | One way steam soot blower system | |
| CN202876549U (en) | Pulse spraying type high-temperature ceramic dust remover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180801 Address after: 116085 128 high energy street, Qixian Ling high tech Industrial Park, Dalian, Liaoning Patentee after: ACRE Coking And Refractory (Dalian) Engineering Consulting Corp., MCC Address before: 116085 128 high energy street, Qixian Ling high tech Industrial Park, Dalian, Liaoning Patentee before: ACRE Coking and Refractory Engineering Consulting Corporation, MCC |
|
| TR01 | Transfer of patent right |