CN201105920Y - Dust removing system for pneumatic ash conveyor - Google Patents
Dust removing system for pneumatic ash conveyor Download PDFInfo
- Publication number
- CN201105920Y CN201105920Y CNU2007200740374U CN200720074037U CN201105920Y CN 201105920 Y CN201105920 Y CN 201105920Y CN U2007200740374 U CNU2007200740374 U CN U2007200740374U CN 200720074037 U CN200720074037 U CN 200720074037U CN 201105920 Y CN201105920 Y CN 201105920Y
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- dust
- ash
- grey storehouse
- grey
- storehouse
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Abstract
The utility model discloses a dust removal system of a pneumatic ash transportation device, which substantially comprises a dust removing fan, a dust remover connected with the dust removing fan, the pneumatic ash transportation device under the dust remover and an ash silo connected with the pneumatic ash transportation device. The dust removal system of the utility model is essentially characterized in that a tail gas collecting port is arranged on the ash silo and communicated with the dust remover through a tail gas pipe and sends the tail gas in an ash bin into the dust remover; a flow straightener is also arranged in the tail gas collecting port. The dust and gas in the ash silo are directly led to the dust remover for purification without arranging any other dust removal device at the upper part of the ash silo for the purification of the dust through the closed loop connection formed between the ash silo and the dust remover, thereby saving production cost, improving dust removal efficiency of the ash silo, stopping secondary dust emission of the ash silo and having good result of use.
Description
Technical field
The utility model relates to environmental protection equipment, specifically, relates to a kind of defeated grey dust pelletizing system.
Background technology
In industrial process, can produce the dusty gas that contains hazardous and noxious substances in a large number, these dusty gas are arranged to atmosphere after must purifying by dust pelletizing system again, dust in dirt pocket deposition then is sent to grey storehouse by the dedusting ash-transmission system, and the accumulation back transports the dust process points to and is for further processing by taking out grey car unification in grey storehouse.
Dust exhaustor common in the prior art mainly comprises bag dust collector and electric dust collector etc., and ash conveying device mainly comprises chain scraper machine, bucket elevator, Pneumatic conveyer etc.Wherein Pneumatic conveyer is the most advanced a kind of defeated grey mode, especially positive-pressure type concentrated phase Pneumatic conveyer. this device is according to the pneumatic conveying principle of advanced person's solid-gas phase, compressed-air actuated static pressure of comprehensive application and dynamic pressure, high concentration, convey materials expeditiously.The total system of positive-pressure type pneumatic ash conveying plant is made up of five parts: source of the gas part, transport portion, pipe section, grey storehouse partial sum control part, its core is the storehouse pump.Every conveying one pump dust is a working cycle, and each circulation divides four-stage: charging, fluidisation, conveying, purging.Three phases behind each on-cycle all need consume the gas (as nitrogen, pressurized air etc.) of some, and these gases are finally all followed dust and entered Hui Ku together.Therefore for preventing reentrainment of dust, grey storehouse is airtight container, and the tail gas that enters grey storehouse by pneumatic ash conveying plant must carry out emission abatement by certain device.In the prior art, for the tail gas in grey storehouse, all be that the mode that small-sized dust exhaustor is installed at the Hui Ku top is handled.
In the prior art, adopt the constructional feature of the dust pelletizing system of positive-pressure type Pneumatic ash conveying mode mainly to form as shown in Figure 1: dedusting fan 1, dedusting house steward, dust exhaustor 2, positive-pressure type pneumatic ash conveying plant 20, grey storehouse 8, grey storehouse tails dedusting device 14 and corresponding deashing device 16, control unit 19 and safety valve 15 by following components.During work, from the dusty gas of each suction port in the dedusting house steward is evenly distributed to each dust exhaustor 2, purification separation in dust exhaustor 2: clean air by dedusting fan 1 row to atmosphere; The long-pending dust that is attached on dust exhaustor 2 inwalls and the flow elernent accumulates in the bottom of dust exhaustor under the effect of deashing device, by the positive-pressure type Pneumatic ash conveying is that device 20 is sent to grey storehouse 8, carry by the positive-pressure type strength dusty gas produced through the purification row of grey storehouse dust exhaustor 14 to atmosphere, the dust of dust exhaustor 14 inner accumulated is then in the bottom in the ash charge storehouse, effect whereabouts 8 of deashing device 16 and control unit 19.As seen, all have comparatively complicated tails dedusting exhaust system on the grey storehouse of existing dust pelletizing system.
About the processing method of the grey storehouse tail gas of dust pelletizing system as shown in Figure 2,, all be to adopt the mode that small-sized dust exhaustor is installed at the Hui Ku top to handle in the prior art for carrying the tail gas that in grey storehouse, produces by strength.With the pretreated dust pelletizing system of the steelworks 3# of Baogang Stocks Trading Co. molten iron is example: the molten iron pretreatment is the preceding working procedure of converter smelting, mainly carries out the operation such as desulfurization, dephosphorization of molten iron.Its dust pelletizing system mainly comprises dedusting fan 1, dust exhaustor 2, dust collector ash hopper 3, storehouse pump 4, ash conveying pipe 7, grey storehouse 8 etc.The disposal system of ash storehouse tail gas mainly comprises plastic plate ash storehouse dust exhaustor 14, pulse ash remover 16, pulse control unit 19, pulse source of the gas 18, the tail gas trend is shown in the arrow among Fig. 2: the nitrogen 5,6 that is used for fluidisation and conveying forms the solid and gas two-phase flow in pump storehouse 4 with the dust mutual action, enter grey storehouse 8 by ash conveying pipe 7, after in grey storehouse 8, carrying out the initial gross separation of gas dirt by deadweight, the gas that still contains a large amount of dust by plastic plate ash storehouse dust exhaustor 14 purification filterings after, by exhausr port 17 rows to atmosphere.Accumulate in the effect whereabouts ash charge storehouse 8 of the dust of plastic plate outside face at pulse ash remover 16, the action of pulse ash remover 16 realizes by pulse control unit 19.
In the above-mentioned dust pelletizing system, there is following shortcoming in the exhaust gas treating method in grey storehouse:
1. investment is big: this small-sized dust collector generally all need comprise parts such as dust exhaustor, deashing device, control unit, and the one-time investment expense does not wait at 4～100,000 yuan;
2. maintenance requirement height: common deashing device has rapping apparatus and pulse backblowing device, and rapping actuating unit wherein, blowback control element etc. all require frequent maintenance and replacement; And the execution of deashing action also relates to PLC control, needs to be grasped the relevant PLC control principle;
3. fault is frequent: in case flow elernent stop up, will take place grey storehouse exhaust emissions untimely, make grey storehouse back pressure too high, cause the safety valve frequent movement, cause reentrainment of dust, serious environment pollution.
Summary of the invention
The purpose of this utility model provides a kind of dust pelletizing system of pneumatic ash conveying plant, with solve gas emission device existing complex structure in grey storehouse in the prior art, input cost is higher, maintenance is big, the frequent problem of fault.
Inventive concept: the utility model has avoided being provided with in addition dust collector above grey storehouse, adopted by dedusting fan---dust exhaustor---positive-pressure type pneumatic ash conveying plant---the circular closed loop method of designing of grey storehouse---dust exhaustor---dedusting fan, by between grey storehouse and dust exhaustor, setting up connection, the dusty gas of being carried by the positive-pressure type pneumatic ash conveying plant in the grey storehouse is sent to dust exhaustor, after filtering, arranges to atmosphere by dust exhaustor by dedusting fan, thus can be in the purification and the discharging that need not to have solved under the prerequisite of any extra dust collector grey storehouse tail gas.
The technical solution of the utility model is: a kind of dust pelletizing system of pneumatic ash conveying plant, comprise: dedusting fan, with dedusting fan bonded assembly dust exhaustor, be positioned at the pneumatic ash conveying plant of dust exhaustor below, the safety valve on the grey storehouse is located in the grey storehouse that links to each other with pneumatic ash conveying plant, on grey storehouse, be provided with an exhaust collection mouth, it is connected with dust exhaustor by an exhaust pipe, and the tail gas in the grey storehouse is sent into dust exhaustor, also is provided with deflecting plate in the exhaust collection mouth.
Grey storehouse is coupled together by using exhaust collection mouth and exhaust pipe and dust exhaustor, the dusty gas of being carried by Pneumatic conveyer in the grey storehouse is sent in the dust exhaustor of dust pelletizing system, utilize dust exhaustor that grey storehouse tail gas is carried out emission abatement, dust collector carries out dedusting thereby avoided on grey storehouse in addition.
Preferably, described exhaust pipe is provided with a shutoff valve.Ash in the ash storehouse is when running up to a certain degree, need extract out by taking out grey car, the normal operation when guaranteeing that grey car is taken out ash prevents that dedusting fan from forming negative pressure in grey storehouse, obstruction is taken out normally carrying out of ash, is provided with a pneumatic cut-off valve (often opening) on the exhaust pipe road.
Preferably, described exhaust collection mouth is that a circumference connects.It is shaped as tubaeform, and wide mouthful is square, is connected with grey storehouse, and slot is circular, is connected with an end of exhaust pipe.The other end of exhaust pipe links to each other with dust exhaustor, is connected thereby form closed loop between dust exhaustor and grey storehouse.
Preferably, the inclined angle alpha of described deflecting plate is 70～50 degree.For the dustiness that reduces tail gas to greatest extent, prevent that the dust suck-back in the grey storehouse from going into the exhaust collection mouth, below the exhaust collection mouth, designed deflecting plate and locations thereof, locations is welded on the top cover inwall in grey storehouse, deflecting plate is installed on the locations.The quantity of deflecting plate, size, leaning angle etc. can be determined by calculating and empirical value in conjunction with the size in grey storehouse, the proportion of dust, the factors such as operation pressure of Pneumatic ash conveying system.
The present invention compared with prior art has following beneficial effect:
1) the utility model need not be provided with dust collector in addition on grey storehouse, thereby the dedusting cost in grey storehouse yuan is reduced to thousands of units by 3 of prior art～100,000, the saving of higher degree productive costs.
2) the utility model has improved the efficient of grey storehouse dedusting, has stopped the reentrainment of dust in grey storehouse, has good result of use.
3) the utility model also has strong, reliable, the non-maintaining advantage of comformability, can save a large amount of spare part Master Cost and recondition expense.
Description of drawings
Fig. 1 is the strength dedusting ash conveying device scheme drawing of prior art.
Fig. 2 is a strength dedusting ash conveying device principle of work scheme drawing in the prior art.
Fig. 3 is the scheme drawing of an embodiment of the present utility model.
Fig. 4 is the principle of work scheme drawing of an embodiment of the present utility model.
Among the figure, the 1st, dedusting fan, the 2nd, dust exhaustor, the 3rd, dust collector ash hopper, the 4th, storehouse pump, the 5th, the nitrogen of carrying, the 6th, fluidisation nitrogen, the 7th, ash pipeline, the 8th, grey storehouse, the 9th, ash inlet tube, the 10th, deflecting plate and locations, the 11st, circumference connects, the 12nd, exhaust pipe, the 13rd, pneumatic cut-off valve, the 14th, grey storehouse dust exhaustor, the 15th, safety valve, the 16th, pulse ash remover, the 17th, exhausr port, the 18th, pulse source of the gas, the 19th, pulse control unit, the 20th, positive-pressure type pneumatic ash conveying plant, the 21st, defeated grey master cock.
The specific embodiment
In an embodiment of the present utility model, as shown in Figure 3:
A kind of dust pelletizing system of pneumatic ash conveying plant comprises: dedusting fan 1, with dedusting fan 1 bonded assembly dust exhaustor 2, positive-pressure type pneumatic ash conveying plant 20, ash storehouse 8, explosion relief valve 15, deflecting plate and locations 10, circumference connects 11, exhaust pipe 12, pneumatic cut-off valve 13.Be connected with an end of positive-pressure type pneumatic ash conveying plant 20 with dedusting fan 1 bonded assembly dust exhaustor 2, circumference connects 11 tops of being located at grey storehouse 8, and it is connected with dust exhaustor 2 by an exhaust pipe 12, and grey storehouse 8 interior tail gas are sent into dust exhaustor.Deflecting plate is installed on the locations, and deflecting plate and locations 10 are fixed on the 8 top cover inwalls of grey storehouse.Pneumatic cut-off valve 13 is arranged on the exhaust pipe 12 and connects an end of 11 near having an area of.Explosion relief valve 15 is arranged on the outer cover in grey storehouse 8.
With grey storehouse 8 by circumference connect 11 and exhaust pipe 12 couple together with dust exhaustor 2, thereby the dusty gas that is produced by Pneumatic conveyer 20 in the grey storehouse 8 is sent in the dust exhaustor 2 of dust pelletizing system, utilize the tail gas in 2 pairs of grey storehouses 8 of dust exhaustor to carry out emission abatement, thereby saved extra grey storehouse dust collector.
In order to guarantee the trouble free service in grey storehouse 8, prevent that grey storehouse 8 from blasting because of malleation is too high or inhale flat because of the excessive quilt of negative pressure, according to the operation pressure of defeated grey source of the gas and the operation pressure of dedusting fan, be provided with on Hui Ku top and integrate positive-pressure explosion-proof and the explosion-proof explosion relief valve 15 of negative pressure accordingly, its positive-pressure explosion-proof pressure is that 12000pa, negative pressure explosion-proof pressure are 800pa.
The circumference that is arranged at 8 tops, grey storehouse connects 11 for tubaeform, and wide mouthful is square, is connected with grey storehouse 8, and slot is circular, is connected with an end of exhaust pipe 12.The other end of exhaust pipe 12 links to each other with dust exhaustor, thereby 8 formation closed loops are connected in dust exhaustor 2 and grey storehouse.
Circumference connect 11 below be provided with three by long deflecting plate and the locationss 10 thereof that shorten, can reduce the dustiness of tail gas to greatest extent, prevent that dust suck-back in the grey storehouse 8 from going into circumference and connecing 11.Locations is welded on the top cover inwall in grey storehouse 8, and deflecting plate is installed on the locations, and its inclined angle alpha is 70 degree.
Ash in the ash storehouse 8 is when running up to a certain degree, need extract out by taking out grey car, pneumatic cut-off valve 13 is arranged at normal operation can guarantee that grey car is taken out ash on the exhaust pipe 12 time, prevent that dedusting fan 1 from forming negative pressure in grey storehouse 8, obstruction is taken out normally carrying out of ash, and the state of pneumatic cut-off valve 13 is for often opening.
Principle of work of the present utility model is as shown in Figure 4: the defeated grey master cock 21 of positive-pressure type pneumatic ash conveying plant is installed in the control unit of positive-pressure type Pneumatic ash conveying system, have the startup of controlling pneumatic ash conveying plant 20 simultaneously and stop and the dual-use function of the opening and closing of pneumatic cut-off valve 13: in the time of need taking out ash in grey storehouse 8, by opening defeated grey master cock 21, temporary close positive-pressure type pneumatic ash conveying plant 20, close shutoff valve 13 simultaneously, thereby guarantee that taking out grey car can normally take out ash; After the ash end is taken out in grey storehouse 8, close defeated grey master cock 21, start pneumatic ash conveying plant 20, open shutoff valve 13 simultaneously, fail grey operation again.At this moment, vent gas treatment flow process in the ash-transmission system is shown in arrow among Fig. 4: the nitrogen 5,6 that is used for fluidisation and conveying forms the solid and gas two-phase flow at storehouse pump 4 and dust mutual action, through ash conveying pipe 7, enter grey storehouse 8 by ash inlet tube 9, dusty gas carries out the initial gross separation of gas, dirt under the effect of deflecting plate 10 and deadweight, afterwards, the gas that still contains certain dust connects 11 by exhaust pipe 12 from circumference, enter in the ash bucket 3 of dust exhaustor 2, through the filtration, purification of dust exhaustor 2, row is to atmosphere from dedusting fan 1 then.
Claims (4)
1. the dust pelletizing system of a pneumatic ash conveying plant, comprise: dedusting fan, with dedusting fan bonded assembly dust exhaustor, be positioned at the pneumatic ash conveying plant of dust exhaustor below, the grey storehouse that links to each other with pneumatic ash conveying plant, be located at the safety valve on the grey storehouse, it is characterized in that grey storehouse is provided with an exhaust collection mouth, it is connected with dust exhaustor by an exhaust pipe, tail gas in the grey storehouse is sent into dust exhaustor, also be provided with deflecting plate in the exhaust collection mouth.
2. the dust pelletizing system of pneumatic ash conveying plant as claimed in claim 1 is characterized in that, exhaust pipe is provided with a shutoff valve.
3. the dust pelletizing system of pneumatic ash conveying plant as claimed in claim 1 or 2 is characterized in that, the exhaust collection mouth is that a circumference connects.
4. the dust pelletizing system of pneumatic ash conveying plant as claimed in claim 3 is characterized in that, the inclined angle alpha of described deflecting plate is 70～50 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200740374U CN201105920Y (en) | 2007-08-24 | 2007-08-24 | Dust removing system for pneumatic ash conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200740374U CN201105920Y (en) | 2007-08-24 | 2007-08-24 | Dust removing system for pneumatic ash conveyor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201105920Y true CN201105920Y (en) | 2008-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200740374U Expired - Fee Related CN201105920Y (en) | 2007-08-24 | 2007-08-24 | Dust removing system for pneumatic ash conveyor |
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| CN (1) | CN201105920Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773414A (en) * | 2015-03-27 | 2015-07-15 | 山东华建仓储装备科技有限公司 | Warehouse top safety balancing device |
| CN105398825A (en) * | 2015-11-24 | 2016-03-16 | 张家港市艾尔环保设备有限公司 | Pneumatic transmission powder collector |
| CN106219247A (en) * | 2016-08-31 | 2016-12-14 | 无锡市华星电力环保修造有限公司 | A kind of flyash air-transport system with dedusting function |
| CN106743671A (en) * | 2016-11-20 | 2017-05-31 | 嘉善永金金属制品有限公司 | Boiler pneumatic ash handling induction system |
| CN107970708A (en) * | 2017-11-30 | 2018-05-01 | 成都易态科技有限公司 | High-temperature dust removal ash afterheat utilizing system |
| CN108375077A (en) * | 2018-03-08 | 2018-08-07 | 眉山市建远商贸有限公司 | A kind of low-temp low-pressure ash disposal system |
-
2007
- 2007-08-24 CN CNU2007200740374U patent/CN201105920Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773414A (en) * | 2015-03-27 | 2015-07-15 | 山东华建仓储装备科技有限公司 | Warehouse top safety balancing device |
| CN105398825A (en) * | 2015-11-24 | 2016-03-16 | 张家港市艾尔环保设备有限公司 | Pneumatic transmission powder collector |
| CN106219247A (en) * | 2016-08-31 | 2016-12-14 | 无锡市华星电力环保修造有限公司 | A kind of flyash air-transport system with dedusting function |
| CN106743671A (en) * | 2016-11-20 | 2017-05-31 | 嘉善永金金属制品有限公司 | Boiler pneumatic ash handling induction system |
| CN107970708A (en) * | 2017-11-30 | 2018-05-01 | 成都易态科技有限公司 | High-temperature dust removal ash afterheat utilizing system |
| CN107970708B (en) * | 2017-11-30 | 2023-07-04 | 成都易态科技有限公司 | High-temperature dedusting ash waste heat utilization system |
| CN108375077A (en) * | 2018-03-08 | 2018-08-07 | 眉山市建远商贸有限公司 | A kind of low-temp low-pressure ash disposal system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 Termination date: 20160824 |
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| CF01 | Termination of patent right due to non-payment of annual fee |