CN204268494U - A kind of accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline - Google Patents
A kind of accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline Download PDFInfo
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- CN204268494U CN204268494U CN201420725149.1U CN201420725149U CN204268494U CN 204268494 U CN204268494 U CN 204268494U CN 201420725149 U CN201420725149 U CN 201420725149U CN 204268494 U CN204268494 U CN 204268494U
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- exhaust
- compressed air
- flue gas
- heat boiler
- calcium carbide
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Abstract
The utility model proposes a kind of accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline, comprising: compressed air soot-blowing pipeline; Multiplely blow grey hole, be arranged on described compressed air soot-blowing pipeline; Compressed air control valve door, is arranged at described compressed air soot-blowing entrance place, and is connected to the programmable logic controller (PLC) of boiler control system; Inner dust stratification cleaning by-pass valve control, is arranged at described compressed air soot-blowing pipeline exit.The accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline that the utility model proposes, the technical problems such as the dust stratification between calcium carbide stove exhaust waste heat boiler and deduster in flue can be solved, can prevent Dust in flue gas from gathering bottom flue, be conducive to flue gas and enter dust pelletizing system smoothly, avoid the power increasing air-introduced machine.
Description
Technical field
The utility model relates to calcium carbide industry calcium carbide stove exhaust field of waste heat utilization, and in particular to a kind of accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline.
Background technology
In furnace of calcium carbide production process, discharge a large amount of dust-laden high-temperature furnace gas, dustiness is generally at 50 ~ 150g/Nm3, and containing a large amount of CO and a small amount of cyanide in furnace gas, direct discharge can cause serious pollution to atmospheric environment.After waste heat boiler utilizes, in calcium carbide burner gas, dust main component after burning is CaO, MgO, Fe2O3, Al2O3 etc., ties grey index >1, and knot bonding ash is very serious.Flue gas coming from carbide furnace temperature, exhaust gas volumn also have certain fluctuation, the distribution of particles also irregularities of dust, and specific area is comparatively large, and density is less, solve the key that dust stratification problem is design.
At present, during Waste Heat Boiler Design, what the top blast ash that is heated often adopted is that compressed air forces soot blower system, soot blower is selected to blow grey parameter and barrel materials according to the character of the cigarette temperature and ash content of respectively blowing ash point, soot blower controls access waste heat boiler PLC control system, can operated from a distance on waste heat boiler control system HMI.
But the blowing ash and often can be left in the basket of the flue between waste heat boiler to deduster; after running after a while; a part of circulation area can be taken by dust stratification bottom flue; flue gas by time resistance damage increase thereupon; thus cause the power of air-introduced machine to increase, increase power consumption, when resistance is damaged greatly to a certain extent; air-introduced machine load can not meet the requirement of use, and the artificial deashing of flue is carried out in blowing out of having to.
Existing soot blower technology is all ripe, but its complicated structure, form is not suitable for yet and is arranged in flue, and equipment price is expensive, investment and operating cost higher, be seldom used in calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline and carry out accumulatingdust.
Utility model content
The utility model proposes a kind of accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline, the technical problems such as the dust stratification between calcium carbide stove exhaust waste heat boiler and deduster in flue can be solved, can prevent Dust in flue gas from gathering bottom flue, be conducive to flue gas and enter dust pelletizing system smoothly, avoid the power increasing air-introduced machine.
In order to achieve the above object, the utility model proposes a kind of accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline, comprising:
Compressed air soot-blowing pipeline;
Multiplely blow grey hole, be arranged on described compressed air soot-blowing pipeline;
Compressed air control valve door, is arranged at described compressed air soot-blowing entrance place, and is connected to the programmable logic controller (PLC) of boiler control system;
Inner dust stratification cleaning by-pass valve control, is arranged at described compressed air soot-blowing pipeline exit.
Further, the angle blown described in bottom grey hole and described flue controls between 50 ~ 65 degree.
Further, the aperture of blowing grey hole described in is 20 ~ 25mm.
Further, described compressed air soot-blowing pipeline is provided with two every 100 ~ 250mm and blows grey hole.
Further, the compressed-air actuated pressure that described compressed air soot-blowing pipeline passes into is 0.4 ~ 1.2MPa.
Further, described compressed air control valve door is pneumatic or electric butterfly valve.
Further, described inner dust stratification cleaning by-pass valve control is Hand-operated butterfly valve.
Further, described programmable logic controller (PLC) is set to open described compressed air control valve door at regular intervals 60 ~ 120 seconds.
The accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline that the utility model proposes, the technical problems such as the dust stratification between calcium carbide stove exhaust waste heat boiler and deduster in flue can be solved, can prevent Dust in flue gas from gathering bottom flue, be conducive to flue gas and enter dust pelletizing system smoothly, avoid the power increasing air-introduced machine.This structure of system equipment is simple, characteristics of compact layout, reliable, easy to maintenance, when flue makes, directly pre-in flue, and reserved maintenance and blowback interface, facilitate later stage use and maintenance.The realization of automatic control directly accesses waste heat boiler PLC control system, and can manual field control, the diversity controlled can be realized, meet the need of production of factory, this system control logic is clear, simple, equipment working condition is stablized to adopt this system to guarantee, can not affect the normal operation of afterheat boiler system under malfunction.
Accompanying drawing explanation
Figure 1 shows that the accumulatingdust apparatus structure schematic diagram of the flue of the utility model preferred embodiment.
Detailed description of the invention
Provide detailed description of the invention of the present utility model below in conjunction with accompanying drawing, but the utility model is not limited to following embodiment.According to the following describes and claims, advantage of the present utility model and feature will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only for object that is convenient, aid illustration the utility model embodiment lucidly.
Please refer to Fig. 1, Figure 1 shows that the accumulatingdust apparatus structure schematic diagram of the flue of the utility model preferred embodiment.The utility model proposes a kind of accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline, comprising: compressed air soot-blowing pipeline 200; Multiplely blow grey hole 300, be arranged on described compressed air soot-blowing pipeline 200; Compressed air control valve door 400, is arranged at described compressed air soot-blowing pipeline 200 porch, and is connected to the programmable logic controller (PLC) 600 of boiler control system; Inner dust stratification cleaning by-pass valve control 500, is arranged at described compressed air soot-blowing pipeline 200 exit.
Wherein, described compressed air control valve door 400 is pneumatic or electric butterfly valve, and described inner dust stratification cleaning by-pass valve control 500 is Hand-operated butterfly valve.
According to the utility model preferred embodiment, in flue 100 between waste heat boiler and deduster, 1 compressed air soot-blowing pipeline 200 is set every a segment distance (about 2 meters), compressed air soot-blowing pipeline 200 arranges 2 every 1 segment distance (100 ~ 250mm) and blows grey hole 300, the angle blown bottom grey hole 300 and flue 100 controls between 50 ~ 65 °, aperture is 20 ~ 25mm, the compressed air (pressure range can be 0.4 ~ 1.2MPa) of 1.0MPa is delivered in accumulatingdust device through external pipe, described compressed air soot-blowing pipeline 200 porch is provided with 1 pneumatic or electric butterfly valve 400, it is connected to the programmable logic controller (PLC) (PLC) 600 of boiler control system, compressed air control valve door 400 T unlatching at set intervals 60 ~ 120S is set in PLC, dust stratification bottom flue 100 can be blown afloat, be suspended in flue 100, then the negative pressure through afterheat boiler system air-introduced machine sucks in deduster, thus reach the object preventing dust stratification in flue 100.
Also the dust of a part may can be gathered in compressed air soot-blowing pipeline 200 after running a period of time, now can open Hand-operated butterfly valve 500 in scene, electronic or Pneumatic butterfly valve 400, dust stratification in compressed air soot-blowing pipeline 200 blows out by compressed air in Hand-operated butterfly valve 500 passage, reaches the object removing dust stratification in compressed air soot-blowing pipeline 2.
In sum, the accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline that the utility model proposes, the technical problems such as the dust stratification between calcium carbide stove exhaust waste heat boiler and deduster in flue can be solved, can prevent Dust in flue gas from gathering bottom flue, be conducive to flue gas and enter dust pelletizing system smoothly, avoid the power increasing air-introduced machine.This structure of system equipment is simple, characteristics of compact layout, reliable, easy to maintenance, when flue makes, directly pre-in flue, and reserved maintenance and blowback interface, facilitate later stage use and maintenance.The realization of automatic control directly accesses waste heat boiler PLC control system, and can manual field control, the diversity controlled can be realized, meet the need of production of factory, this system control logic is clear, simple, equipment working condition is stablized to adopt this system to guarantee, can not affect the normal operation of afterheat boiler system under malfunction.
Although the utility model with preferred embodiment disclose as above, so itself and be not used to limit the utility model.Have in the utility model art and usually know the knowledgeable, not departing from spirit and scope of the present utility model, when being used for a variety of modifications and variations.Therefore, protection domain of the present utility model is when being as the criterion depending on those as defined in claim.
Claims (8)
1., for an accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline, it is characterized in that, comprising:
Compressed air soot-blowing pipeline;
Multiplely blow grey hole, be arranged on described compressed air soot-blowing pipeline;
Compressed air control valve door, is arranged at described compressed air soot-blowing entrance place, and is connected to the programmable logic controller (PLC) of boiler control system;
Inner dust stratification cleaning by-pass valve control, is arranged at described compressed air soot-blowing pipeline exit.
2. the accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline according to claim 1, is characterized in that, described in the angle blown bottom grey hole and described flue control between 50 ~ 65 degree.
3. the accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline according to claim 1, is characterized in that, described in blow grey hole aperture be 20 ~ 25mm.
4. the accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline according to claim 1, is characterized in that, described compressed air soot-blowing pipeline is provided with two every 100 ~ 250mm and blows grey hole.
5. the accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline according to claim 1, is characterized in that, the compressed-air actuated pressure that described compressed air soot-blowing pipeline passes into is 0.4 ~ 1.2MPa.
6. the accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline according to claim 1, is characterized in that, described compressed air control valve door is pneumatic or electric butterfly valve.
7. the accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline according to claim 1, is characterized in that, described inner dust stratification cleaning by-pass valve control is Hand-operated butterfly valve.
8. the accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline according to claim 1, is characterized in that, described programmable logic controller (PLC) is set to open described compressed air control valve door at regular intervals 60 ~ 120 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420725149.1U CN204268494U (en) | 2014-11-27 | 2014-11-27 | A kind of accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420725149.1U CN204268494U (en) | 2014-11-27 | 2014-11-27 | A kind of accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204268494U true CN204268494U (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420725149.1U Expired - Fee Related CN204268494U (en) | 2014-11-27 | 2014-11-27 | A kind of accumulatingdust device for calcium carbide stove exhaust exhaust-heat boiler flue gas pipeline |
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| Country | Link |
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| CN (1) | CN204268494U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036112A (en) * | 2017-05-22 | 2017-08-11 | 山西中源科扬节能服务有限公司 | The preceding bottom dust stratification cleaning plant of boiler tail flue gas waste heat recovery apparatus |
| CN110657444A (en) * | 2018-06-28 | 2020-01-07 | 上海梅山钢铁股份有限公司 | Online soot blower of vertical-cooling sintering waste heat boiler |
-
2014
- 2014-11-27 CN CN201420725149.1U patent/CN204268494U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036112A (en) * | 2017-05-22 | 2017-08-11 | 山西中源科扬节能服务有限公司 | The preceding bottom dust stratification cleaning plant of boiler tail flue gas waste heat recovery apparatus |
| CN110657444A (en) * | 2018-06-28 | 2020-01-07 | 上海梅山钢铁股份有限公司 | Online soot blower of vertical-cooling sintering waste heat boiler |
| CN110657444B (en) * | 2018-06-28 | 2022-01-14 | 上海梅山钢铁股份有限公司 | Online soot blower of vertical-cooling sintering waste heat boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20161127 |