CN104748541B - A kind of bypath system of the safety dumping heat smoke being applicable to firepower desiccation - Google Patents
A kind of bypath system of the safety dumping heat smoke being applicable to firepower desiccation Download PDFInfo
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- CN104748541B CN104748541B CN201510189484.3A CN201510189484A CN104748541B CN 104748541 B CN104748541 B CN 104748541B CN 201510189484 A CN201510189484 A CN 201510189484A CN 104748541 B CN104748541 B CN 104748541B
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- 239000000779 smoke Substances 0.000 title claims abstract description 25
- 238000001035 drying Methods 0.000 claims abstract description 38
- 239000000428 dust Substances 0.000 claims abstract description 25
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000001301 oxygen Substances 0.000 claims abstract description 16
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 23
- 239000003546 flue gas Substances 0.000 claims description 23
- 239000007789 gas Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 238000005276 aerator Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 5
- 235000019504 cigarettes Nutrition 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 239000003245 coal Substances 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 3
- 238000004880 explosion Methods 0.000 abstract description 3
- 230000001939 inductive effect Effects 0.000 abstract description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 206010021143 Hypoxia Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007954 hypoxia Effects 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to the bypath system of a kind of safety dumping heat smoke being applicable to firepower desiccation, belong to coal slime heat exchange drying system technical field.The present invention utilizes the ratio of the oxygen content in monitoring combustion process, the oxygen content data utilizing sensor acquisition in time take to change the mode of air-inducing passage immediately, the three elements making dust explosion are always to maintain oxygen content key element and control in safety line, and lay down in system pipes in time intrinsic pressure, be naturally transitioned into the safe condition of system.This invention advantage can accomplish system safely controllable, prevent trouble before it happens, solve heat smoke potential safety hazard in heat exchanging process, be one reach certain technology content, be suitable for invention.
Description
Technical field
The invention belongs to coal slime heat exchange drying system technical field, be specifically related to a kind of safety being applicable to firepower desiccation
The bypath system of discharge heat smoke.
Background technology
Utilize heat smoke and wet stock to carry out heat exchange in the space closed, for during material dewatering along with moisture
Depart from and can produce tiny granule with dehydrated material, high-temperature dust after the burning of association when in addition producing heat smoke
Grain, can form the high-temperature dust flue gas of mixing, when dust concentration reaches certain index, if now closing containing in space
When oxygen amount ratio reaches certain index, just meet the sufficient and necessary condition of dust explosion, safety can be brought hidden to drying system
Suffer from.Typically now use venting to solve, but from source, do not solve problem.The deficiencies in the prior art the most how are overcome to be
The problem that coal slime heat exchange drying system technical field needs solution badly at present.
Summary of the invention
The invention aims to solve the deficiencies in the prior art, it is provided that a kind of safety dumping being applicable to firepower desiccation
The bypath system of heat smoke, this security of system is controlled, prevent trouble before it happens, and solves heat smoke safety in heat exchanging process hidden
Suffer from, be one and reach certain technology content, the invention being suitable for.
The technical solution used in the present invention is as follows:
A kind of bypath system of the safety dumping heat smoke being applicable to firepower desiccation, including main frame and auxiliary combination plant,
Described main frame includes that drying machine and air stove, described auxiliary combination plant include the driving of aerator, air stove fire grate, secondary
Aerator, bypass valve, relief valve, the first screen collector, feeding air-locked valve, flow-disturbing valve, air-introduced machine, cyclone dust extractor, cloth bag
Cleaner unit, air main, bypass blow-down pipe, the second blow-down pipe, the first blow-down pipe and the second screen collector；
Described aerator, air stove fire grate drive and are connected with air stove respectively with post-blast machine；
The port of export of described air stove is connected with the arrival end of drying machine by air main；
One end of described bypass blow-down pipe is connected with air main, the arrival end phase of the other end and the second screen collector
Even；The port of export of the second screen collector and one end of the second blow-down pipe are connected, and the other end of the second blow-down pipe communicates with air；
On bypass blow-down pipe, and with the junction of air main, be provided with bypass valve；
Described drying machine is provided with feeding air-locked valve, the port of export of drying machine, cyclone dust extractor, sack cleaner, draws
Blower fan and the first screen collector are sequentially connected by pipeline, and the port of export of the first screen collector passes through the first blow-down pipe with big
Gas phase is led to；
The pipeline that the port of export of described drying machine is connected with cyclone dust extractor is provided with flow-disturbing valve；
On the pipeline that described cyclone dust extractor is connected with sack cleaner, and sack cleaner is connected with air-introduced machine
The sensor for detecting pressure, temperature and oxygen content it is equipped with on the pipeline connect；
The first described blow-down pipe and the second blow-down pipe are just connected with air after crossing；
The second described blow-down pipe is provided with relief valve, and relief valve be positioned at the joint that crosses with the first blow-down pipe it
Before.
In technique scheme, when normally producing, open flow-disturbing valve, require to close bypass valve, the trend of flue gas simultaneously
It is followed successively by air stove, air main, drying machine, flow-disturbing valve, cyclone dust extractor, sack cleaner and the first screen collector, finally
It is discharged in air by the first blow-down pipe；This trend referred to as wind send main line to move towards；
Dried material in the air stove heat smoke that obtains of heating enters into drying machine by air main, after dried material
Flue gas is entered cyclone dust extractor, sack cleaner and the first screen collector dedusting successively through flow-disturbing valve, finally by first
Blow-down pipe is discharged in air.
In technique scheme, when shutting down or produce time-out, close flow-disturbing valve, require to open bypass valve, flue gas simultaneously
Trend is followed successively by air stove, air main, bypass blow-down pipe and the second screen collector, is discharged to greatly finally by the second blow-down pipe
In gas.This trend referred to as wind send by-pass line to move towards.
The heat smoke obtained through air stove heating is entered in the second screen collector by air main and bypass blow-down pipe
Dedusting, the flue gas after dedusting is discharged in air by the second blow-down pipe.
The present invention is suitable for coal slime heat exchange drying system, and during normal production, flue gas send main line to move towards along wind；Flue gas during shutdown
By-pass line is sent to move towards along wind；During time-out, flue gas send by-pass line to move towards along wind；When sensor detects that temperature is too high, oxygen content abnormal
Or during pressure anomaly, production should be suspended or stop producing.
Wind send main line and wind to send by-pass line to be two separate process line, each completes respective process task,
Using wind to send the premise of by-pass line to be the necessity for closing flow-disturbing valve, require to open bypass valve simultaneously, two chain operations are simultaneously
After completing, just can ensure that the effect of safety guarantee is played in bypass wind line sending.Enable two interlocking action just phases when wind send main line
Instead, premise is the necessity for opening flow-disturbing valve, requires to close bypass valve simultaneously, and all of chain operation is all by automatically controlled PLC program
Control.
Present system runs omnidistance suboxides negative pressure and runs, safe and reliable, inside drying system for ensureing dry run
Oxygen content controls in the hypoxia subnormal ambient below 8% all the time, and high-temperature flue gas is furnished with bypass on air main, drying system
Run and completed by upper control computer communication subsystem, the flame in communication subsystem real-time monitoring system, temperature (monitoring position
Put and see T1 in figure), pressure, the parameter such as cigarette oxygen, and be equipped with perfect safety interlock protector, waving of drying system internal residual
Sending out the property specially designed air channel automatic-discharging of gas, prevent escaping gas from gather, that stops that dry run occurs to explode can
Energy.
The heat smoke that air stove produces is drawn onto in drying machine through the negative pressure of air-introduced machine, the flue gas between air stove and drying machine
Passage is referred to as air main, is furnished with bypass blow-down pipe in the middle of air main, and when shutting down and produce time-out, bypass blow-down pipe passes through program
Control, can within the shortest time, the high-temperature flue gas in air stove be dropped in safety range, it is ensured that be dried after shutting down safe and reliable
Property.
Compared with prior art, it has the beneficial effect that the present invention
The present invention is to utilize monitoring combustion process be applicable to the bypath system of the safety dumping heat smoke of firepower desiccation
The ratio of oxygen content, the oxygen content data utilizing sensor acquisition in time are taked to change the mode of air-inducing passage immediately, are made powder
The three elements of dust explosion are always to maintain oxygen content key element and control in safety line, and lay down in system pipes in time intrinsic pressure, natural
It is transitioned into the safe condition of system.This invention advantage can accomplish system safely controllable, prevent trouble before it happens, solve hot cigarette
Gas potential safety hazard in heat exchanging process, is one and reaches certain technology content, the invention being suitable for.
Accompanying drawing explanation
Fig. 1 is signal when normally producing of the bypath system of the safety dumping heat smoke that the present invention is applicable to firepower desiccation
Figure；
Fig. 2 applies to the bypath system of the safety dumping heat smoke of firepower desiccation and shuts down or produce signal when suspending
Figure；
Wherein, 1, aerator；2, air stove fire grate drives；3, post-blast machine；4, bypass valve；5, relief valve；6, first
Screen collector；7, drying machine；8, feeding air-locked valve；9, flow-disturbing valve；10, air-introduced machine；11, cyclone dust extractor；12, air stove；
13, sack cleaner；14, air main；15, bypass blow-down pipe；16, the second blow-down pipe；17, the first blow-down pipe；18, the second water curtain
Cleaner unit；19, sensor.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail.
It will be understood to those of skill in the art that the following example is merely to illustrate the present invention, and should not be regarded as limiting this
Bright scope.Unreceipted concrete technology or condition person in embodiment, according to the technology described by the document in this area or condition
Or carry out according to product description.Material therefor or equipment unreceipted production firm person, be and can be obtained by purchase
Conventional products.
As shown in Fig. 1 ~ Fig. 2, the bypath system of a kind of safety dumping heat smoke being applicable to firepower desiccation, including main frame and
Auxiliary combination plant, described main frame includes that drying machine 7 and air stove 12, described auxiliary combination plant include aerator 1, heat
Wind furnace fire grate driving 2, post-blast machine 3, bypass valve 4, relief valve the 5, first screen collector 6, feeding air-locked valve 8, flow-disturbing valve
9, air-introduced machine 10, cyclone dust extractor 11, sack cleaner 13, air main 14, bypass blow-down pipe the 15, second blow-down pipe 16, first
Blow-down pipe 17 and the second screen collector 18；
Described aerator 1, air stove fire grate drive 2 to be connected with air stove 12 respectively with post-blast machine 3；Described drum
Blower fan 1 and post-blast machine 3 are for supplying air to air stove 12；Described air stove fire grate drives 2 for air stove 12
Fire grate provide power；
The port of export of described air stove 12 is connected with the arrival end of drying machine 7 by air main 14；
One end of described bypass blow-down pipe 15 is connected with air main 14, the other end and the entrance of the second screen collector 18
End is connected；The port of export of the second screen collector 18 and one end of the second blow-down pipe 16 are connected, the other end of the second blow-down pipe 16
Communicate with air；
On bypass blow-down pipe 15, and with the junction of air main 14, be provided with bypass valve 4；
Described drying machine 7 is provided with feeding air-locked valve 8, the port of export of drying machine 7, cyclone dust extractor 11, bag-type dust
Device 13, air-introduced machine 10 and the first screen collector 6 are sequentially connected by pipeline, and the port of export of the first screen collector 6 is by the
One blow-down pipe 17 communicates with air；
The pipeline that the port of export of described drying machine 7 is connected with cyclone dust extractor 11 is provided with flow-disturbing valve 9；
On the pipeline that described cyclone dust extractor 11 is connected with sack cleaner 13, and sack cleaner 13 and air inducing
The sensor 19 for detecting pressure, temperature and oxygen content it is equipped with on the pipeline that machine 10 is connected；
The first described blow-down pipe 17 is just connected with air after crossing with the second blow-down pipe 16；
The second described blow-down pipe 16 is provided with relief valve 5, and relief valve 5 is positioned at and crossing that the first blow-down pipe 17 crosses
Before Dian.
When normally producing, opening flow-disturbing valve 9, require to close bypass valve 4 simultaneously, the trend of flue gas is followed successively by air stove
12, air main 14, drying machine 7, flow-disturbing valve 9, cyclone dust extractor 11, sack cleaner 13 and the first screen collector 6, finally lead to
Cross the first blow-down pipe 17 to be discharged in air；This trend referred to as wind send main line to move towards；
Dried material in air stove 12 heat smoke that obtains of heating enters into drying machine 7 by air main 14, dried object
Flue gas after material is entered cyclone dust extractor 11, sack cleaner 13 and the first screen collector 6 dedusting successively through flow-disturbing valve 9,
It is discharged in air finally by the first blow-down pipe 17.
When shutting down or produce time-out, closing flow-disturbing valve 9, require to open bypass valve 4 simultaneously, flue gas trend is followed successively by hot blast
Stove 12, air main 14, bypass blow-down pipe 15 and the second screen collector 18, be discharged in air finally by the second blow-down pipe 16
Go.This trend referred to as wind send by-pass line to move towards.
The heat smoke obtained through air stove 12 heating is entered into the second water curtain removed by air main 14 and bypass blow-down pipe 15
Dedusting in dirt device 18, the flue gas after dedusting is discharged in air by the second blow-down pipe 16.
It addition, when shutting down or produce time-out, the flue gas in drying machine 7 enters into bypass blow-down pipe also by air main 14
In 15, then dedusting in the second screen collector 18, the flue gas after dedusting is discharged in air by the second blow-down pipe 16.
The present invention is suitable for coal slime heat exchange drying system, and during normal production, flue gas send main line to move towards along wind；Flue gas during shutdown
By-pass line is sent to move towards along wind；During time-out, flue gas send by-pass line to move towards along wind；When sensor 19 detects that temperature is too high, oxygen content is different
Often or during pressure anomaly, production should be suspended or stop producing.
Wind send main line and wind to send by-pass line to be two separate process line, each completes respective process task,
Using wind to send the premise of by-pass line to be the necessity for closing flow-disturbing valve 9, require to open bypass valve 4 simultaneously, two chain operations are same
Time complete after, just can ensure that the effect of safety guarantee is played in bypass wind line sending.Enable when wind send main line two interlocking actions just
On the contrary, premise is the necessity for opening flow-disturbing valve 9, requires to close bypass valve 4 simultaneously, and all of chain operation is all by automatically controlled PLC
Programme-control.
Present system runs omnidistance suboxides negative pressure and runs, safe and reliable, inside drying system for ensureing dry run
Oxygen content controls in the hypoxia subnormal ambient below 8% all the time, and high-temperature flue gas is furnished with bypass, drying system on air main 14
Operation completed by upper control computer communication subsystem, flame in communication subsystem real-time monitoring system, temperature (monitoring
T1 in figure is seen in position), pressure, the parameter such as cigarette oxygen, and be equipped with perfect safety interlock protector, drying system internal residual
The air channel automatic-discharging that escaping gas is specially designed, prevents escaping gas from gathering, and stops dry run and blast occurs
May.
The heat smoke that air stove 2 produces is drawn onto in drying machine 7, between air stove 2 and drying machine 7 through the negative pressure of air-introduced machine 10
Exhaust gases passes be referred to as air main 14, is furnished with bypass blow-down pipe 15 in the middle of air main 14, shut down and produce suspend time, bypass is put
Blank pipe 15, by programme-control, can drop to the high-temperature flue gas in air stove in safety range within the shortest time, it is ensured that is dried
Security reliability after shutdown.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.The technology of the industry
Personnel, it should be appreciated that the present invention is not restricted to the described embodiments, simply illustrating this described in above-described embodiment and description
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, and these become
Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and
Equivalent defines.
Claims (3)
1. the bypath system of the safety dumping heat smoke being applicable to firepower desiccation, it is characterised in that: include main frame and auxiliary
Combination plant, described main frame includes drying machine (7) and air stove (12), described auxiliary combination plant include aerator (1),
Air stove fire grate drives (2), post-blast machine (3), bypass valve (4), relief valve (5), the first screen collector (6), charging to close
Wind device (8), flow-disturbing valve (9), air-introduced machine (10), cyclone dust extractor (11), sack cleaner (13), air main (14), bypass are put
Blank pipe (15), the second blow-down pipe (16), the first blow-down pipe (17) and the second screen collector (18)；
Described aerator (1), air stove fire grate drive (2) to be connected with air stove (12) respectively with post-blast machine (3)；
The port of export of described air stove (12) is connected with the arrival end of drying machine (7) by air main (14)；
One end of described bypass blow-down pipe (15) is connected with air main (14), entering of the other end and the second screen collector (18)
Mouth end is connected；The port of export of the second screen collector (18) and one end of the second blow-down pipe (16) are connected, the second blow-down pipe (16)
The other end communicate with air；
In bypass blow-down pipe (15), and with the junction of air main (14), be provided with bypass valve (4)；
Described drying machine (7) is provided with feeding air-locked valve (8), the port of export of drying machine (7), cyclone dust extractor (11), cloth bag
Cleaner unit (13), air-introduced machine (10) and the first screen collector (6) are sequentially connected by pipeline, the first screen collector (6)
The port of export is communicated with air by the first blow-down pipe (17)；
The pipeline that the port of export of described drying machine (7) is connected with cyclone dust extractor (11) is provided with flow-disturbing valve (9)；
On the pipeline that described cyclone dust extractor (11) is connected with sack cleaner (13), and sack cleaner (13) and drawing
The sensor (19) for detecting pressure, temperature and oxygen content it is equipped with on the pipeline that blower fan (10) is connected；
Described the first blow-down pipe (17) is just connected with air after crossing with the second blow-down pipe (16)；
Described the second blow-down pipe (16) is provided with relief valve (5), and relief valve (5) is positioned at and crosses with the first blow-down pipe (17)
Before joint；
Described flow-disturbing valve (9) and bypass valve (4) connect automatically controlled PLC.
The bypath system of the safety dumping heat smoke being applicable to firepower desiccation the most according to claim 1, it is characterised in that
When normally producing, open flow-disturbing valve (9), require to close bypass valve (4) simultaneously, heat the heat smoke obtained through air stove (12)
Entering into drying machine (7) interior dried material by air main (14), the flue gas after dried material is entered successively through flow-disturbing valve (9)
Cyclone dust extractor (11), sack cleaner (13) and the first screen collector (6) dedusting, arrange finally by the first blow-down pipe (17)
Go out in air.
The bypath system of the safety dumping heat smoke being applicable to firepower desiccation the most according to claim 1, it is characterised in that
When shutting down or produce time-out, close flow-disturbing valve (9), require to open bypass valve (4) simultaneously, obtain through air stove (12) heating
Heat smoke enters into dedusting in the second screen collector (18), the cigarette after dedusting by air main (14) and bypass blow-down pipe (15)
Gas is discharged in air by the second blow-down pipe (16).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510189484.3A CN104748541B (en) | 2015-04-21 | 2015-04-21 | A kind of bypath system of the safety dumping heat smoke being applicable to firepower desiccation |
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|---|---|---|---|
| CN201510189484.3A CN104748541B (en) | 2015-04-21 | 2015-04-21 | A kind of bypath system of the safety dumping heat smoke being applicable to firepower desiccation |
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| CN104748541B true CN104748541B (en) | 2016-08-24 |
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Inventor after: Wang Pengyun Inventor after: Wang Lianbang Inventor after: Yin Zhaokai Inventor after: Peng Wengang Inventor after: Shen Shuaixiang Inventor before: Wang Pengyun |
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Application publication date: 20150701 Assignee: Shenmu Zhongding Energy Technology Development Co.,Ltd. Assignor: YUNNAN ZHONGYI DINGDONG ENERGY TECHNOLOGY DEVELOPMENT Co.,Ltd. Contract record no.: X2024980002445 Denomination of invention: A bypass system for safe emission of hot flue gas suitable for thermal drying Granted publication date: 20160824 License type: Common License Record date: 20240304 |
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