CN106975305A - A kind of Bed Filtration dust pelletizing system - Google Patents
A kind of Bed Filtration dust pelletizing system Download PDFInfo
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- CN106975305A CN106975305A CN201710251310.4A CN201710251310A CN106975305A CN 106975305 A CN106975305 A CN 106975305A CN 201710251310 A CN201710251310 A CN 201710251310A CN 106975305 A CN106975305 A CN 106975305A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
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Abstract
The invention discloses a kind of Bed Filtration dust pelletizing system, it includes at least one host grain bed filter collector and time granular-layer dust precipitator, ash-laden gas house steward, clean gas house steward and blowback air house steward, ash-laden gas house steward conveys ash-laden gas into host grain bed filter collector, clean gas after clean gas house steward output host grain bed filter collector filtering, the bottom of host grain bed filter collector is provided with main ash bucket, blowback air house steward conveys blowback air into host grain bed filter collector, the ash-laden gas that itself and the top of main ash bucket are communicated with secondary granular-layer dust precipitator introduces pipe, ash-laden gas is introduced into conveying dust and gas containing fine powder in Guan Xiangci granular-layer dust precipitators, clean gas after clean gas house steward output time granular-layer dust precipitator filtering, blowback air house steward conveys blowback air into secondary granular-layer dust precipitator, the bottom of secondary granular-layer dust precipitator is provided with time ash bucket；Advantage is can to remove to high efficient and reliable the fine dust for being difficult to settle.
Description
Technical field
The present invention relates to a kind of dust removal by filtration system, more particularly, to a kind of Bed Filtration dust pelletizing system.
Background technology
Bed Filtration dust pelletizing system has unique advantage in gas cleaning at high temperature field.
Such as a kind of patent of invention " granular-layer dust precipitator " of China's bulletin（The applying date is on 01 31st, 2007, public
Announcement number is CN101036846A, Patent No. ZL200710067109.7）, it includes shell body and set outside along short transverse
At least one layer of filter in housing, the top of shell body is provided with ash-laden gas import, and the lower end of shell body is provided with dust
Outlet, filter, which is provided with independent gas reversing arrangement, gas reversing arrangement, is connected with net gas house steward and blowback air is total
Pipe, feature is that filter includes at least one filter element, and filter element includes being provided with blow vent on inner housing, inner housing
And breather pipe, it is provided with stratum granulosum and air distribution plate in inner housing, blow vent is arranged on the top of stratum granulosum, breather pipe is arranged on
The lower section of granulosa, breather pipe laterally passes shell body and is connected with gas reversing arrangement.The granular-layer dust precipitator is filtered out excessively
During dirt, inner housing is surrounded by hot air, and inner housing each several part expands with heat and contract with cold uniformly, and thermal deformation resistant performance is good so that the grain bed
Filter collector can be used in high temperature and the changeable occasion of temperature, and thermal adaptability is strong, applied widely；When filter is included simultaneously
When joining multiple filter elements of arrangement, the continuous filtering of gas can be achieved, effect is more preferable.
But, there is problems with implementation process in above-mentioned granular-layer dust precipitator：Due in an inner housing
Blowback throughput during stratum granulosum reverse gas cleaning is 1.5~2.5 times of the average filtration throughput of the stratum granulosum in the inner housing,
Therefore it can cause the blowback air of the stratum granulosum in the inner housing of the minimum second layer can not be by the inner housing of minimum first layer
Granulosa is received, so that blowback air carrying dust upruss can be caused, and the minimum first layer in the granular-layer dust precipitator
Inner housing in stratum granulosum blowback air be even more can only upruss, cause fine dust in minimum first layer to minimum third layer
Between spin, influence fine dust sedimentation discharge.To make blowback air flow downward, although can be using circulating fan in the grain bed mistake
The pumping of filtering dust remover bottom forces blowback air and dust to extract the ash-laden gas for being circulated back to the granular-layer dust precipitator out from bottom
Import, but when temperature is high, dust hardness is big, the blade wear in circulating fan can be very serious, especially works as and contains in gas
During a large amount of tar, anti-caking tar and dust stratification in circulating fan are a problems.
The content of the invention
The technical problems to be solved by the invention, which are to provide, a kind of can remove to high efficient and reliable the fine dust for being difficult to settle
Bed Filtration dust pelletizing system.
The present invention solve the technical scheme that is used of above-mentioned technical problem for：A kind of Bed Filtration dust pelletizing system, including
At least one host grain bed filter collector, ash-laden gas house steward, clean gas house steward and blowback air house steward, described host grain bed mistake
The top of filtering dust remover is connected with described ash-laden gas house steward, and described ash-laden gas house steward is to described host grain bed dust removal by filtration
Ash-laden gas is conveyed in device, described host grain bed filter collector is total with described clean gas house steward and described blowback air respectively
Pipe is connected, and it is clean that the described host grain bed filter collector of described clean gas house steward output is obtained after being filtered to ash-laden gas
Gas, the bottom of described host grain bed filter collector is provided with the main ash straight-through with described host grain bed filter collector
Bucket, it is characterised in that：Described blowback air house steward conveys blowback air with blowback stream into described host grain bed filter collector
Change deashing, the Bed Filtration dust pelletizing system also includes at least one granular-layer dust precipitator, described secondary grain bed mistake
The secondary granular-layer dust precipitator and the ash-laden gas on the top of described main ash bucket being provided with filtering dust remover described in connection are introduced
Pipe, described ash-laden gas, which is introduced into pipe and convey the mistake of the host grain bed described in being contained in into described secondary granular-layer dust precipitator, to be filtered out
The dust and gas containing fine powder for the fine dust not settled in dirt device, described secondary granular-layer dust precipitator is total with described clean gas respectively
Pipe and described blowback air house steward connect, and the described secondary granular-layer dust precipitator of described clean gas house steward output is to containing fine powder
The clean gas obtained after dust and gas filtering, described blowback air house steward conveys blowback air into described secondary granular-layer dust precipitator
Deashing is fluidized with blowback, the bottom of described secondary granular-layer dust precipitator is provided with and described secondary granular-layer dust precipitator
Straight-through secondary ash bucket.
The top of described secondary ash bucket is connected with the dust-laden blowback air fairlead for exporting dust-laden blowback air, and described contains
The outlet side of dirt blowback air fairlead is connected with the cleaning equipment for purifying dust-laden blowback air, or described dust-laden blowback air draws
The outlet side concatenation of outlet pipe is connected after drawing valve with described ash-laden gas house steward.Here, by dust-laden blowback air fairlead from secondary
The dust-laden blowback air drawn in ash bucket can be by cleaning equipment high-efficient purification, and the blowback air after purification can be sent under clean gas house steward
Equipment is swum, is thus lost in the absence of clean blowback air；The dust-laden drawn by dust-laden blowback air fairlead out of secondary ash bucket is anti-
Air blowing can be also introduced directly into ash-laden gas house steward, then is filtered；In the case where being not provided with dust-laden blowback air fairlead, right
When each grain bed in secondary granular-layer dust precipitator carries out the fluidisation deashing of blowback in turn, dust-laden blowback air draws through ash-laden gas
Enter pipe and be transmitted back to main ash bucket, enter back into host grain bed filtering.
Described cleaning equipment includes scrubbing tower and air-introduced machine, the outlet side of described dust-laden blowback air fairlead with it is described
Scrubbing tower air inlet connection, the entrance point that the gas outlet concatenation of described scrubbing tower is drawn after valve with described air-introduced machine connects
Connect, the port of export of described air-introduced machine exports the clean blowback air after purification；Each in secondary granular-layer dust precipitator
When secondary grain bed carries out the fluidisation deashing of blowback in turn, the dust-laden blowback air drawn through dust-laden blowback air fairlead is washed by scrubbing tower
Wash, the clean blowback air of scrubbing tower output is sent to the upstream device of clean gas house steward by air-introduced machine；Valve is drawn in actual treatment
Also it can be serially connected between the outlet side of dust-laden blowback air fairlead and the air inlet of scrubbing tower, only because dust-laden blowback air is drawn
The temperature for the dust-laden blowback air that pipe is drawn is of a relatively high, so also higher to drawing the temperature requirement of valve, and suitable for high temperature
The price of valve is of a relatively high, therefore extraction valve can be arranged between the gas outlet of scrubbing tower and the entrance point of air-introduced machine, reduces
Draw the price of valve.
Or described cleaning equipment includes gas cooler, sack cleaner and air-introduced machine, described dust-laden blowback air draws
The outlet side of outlet pipe is connected with the input of described gas cooler, the output end of described gas cooler and described cloth
The input connection of bag dust collector, the output end concatenation of described sack cleaner draws the import after valve with described air-introduced machine
End connection, the port of export of described air-introduced machine exports the clean blowback air after purification；In to secondary granular-layer dust precipitator
When each grain bed carries out the fluidisation deashing of blowback in turn, the dust-laden blowback air drawn through dust-laden blowback air fairlead is passed sequentially through
Clean blowback air is obtained after gas cooler and sack cleaner purification, then by air-introduced machine clean blowback air to be sent into clean gas total
The upstream device of pipe；Valve is drawn in actual treatment can also be serially connected with outlet side and the gas cooler of dust-laden blowback air fairlead
Input between, only because dust-laden blowback air fairlead draw dust-laden blowback air temperature it is of a relatively high, so to drawing
The temperature requirement for going out valve is also higher, and the price suitable for the valve of high temperature is of a relatively high, therefore extraction valve can be arranged at into cloth bag
Between the output end of deduster and the entrance point of air-introduced machine, the price for drawing valve is reduced.
The upstream of described blowback air house steward is connected with back blowing machine, and the entrance point of described back blowing machine is passed through totally
It is provided between the inlet end of gas, the port of export of described back blowing machine and described blowback air house steward for heating clean gas
It is provided between heater, or the port of export and the inlet end of described blowback air house steward of described back blowing machine for mixing dry
The blender of net gas and high-temperature flue gas, described blender connection is provided with the burner of high-temperature flue gas.Here, using heating
Device heats the clean gas of low temperature, the clean gas after heating is reached the temperature needed for blowback；Also can be by being mixed into high-temperature flue gas
The temperature that the clean gas of low temperature is brought up to needed for blowback, to reduce the mixed volume of high-temperature flue gas, burner can use oxygen-enriched combustion
Burn.
The upstream of described blowback air house steward is connected with back blowing machine, and the entrance point of described back blowing machine is passed through high temperature cigarette
Gas.Here, the entrance point of back blowing machine and high-temperature flue gas pipeline communication being passed directly into high-temperature flue gas, being met instead with temperature
High-temperature flue gas needed for blowing is as blowback air.
It is provided with least one host grain bed, described host grain bed and sets in described host grain bed filter collector
There is the main breather pipe that the clean gas for being obtained after being filtered is drawn, described master is stretched out in the outer end of described main breather pipe
Outside grain bed filter collector, and the net qi leel branch pipe of trunk is communicated with and anti-by the master of concatenation by the net air valve of master of concatenation respectively
Purge valve is communicated with main blowback air branched pipe, described clean gas house steward is communicated with master by the net gas branch pipe valve of trunk of concatenation
Clean gas branch pipe, the net gas branch pipe of described trunk is connected with the net qi leel branch pipe of described trunk, is led on described blowback air house steward
The main blowback air manifold valve for crossing concatenation is communicated with main blowback gas branch pipe, described main blowback gas branch pipe and described main blowback qi leel
Branch pipe is connected；The main shock depositing dust plate for strengthening dust settling is provided with described main ash bucket.Here, utilizing main net air valve
With the unlatching of the net gas branch pipe valve of trunk, the clean gas that will can be obtained after the host grain bed filtering in host grain bed filter collector
Pass sequentially through the net qi leel branch pipe of main breather pipe, trunk, the net gas branch pipe of trunk and clean gas house steward output；Utilize main blowback gas branch pipe
The unlatching of valve and main blowback air valve, can pass sequentially through blowback air blowback air house steward, main blowback gas branch pipe, main blowback air branch
Pipe, the input of main breather pipe.
It is provided with least one grain bed, described secondary grain bed and sets in described secondary granular-layer dust precipitator
There is the secondary breather pipe that the clean gas for being obtained after being filtered is drawn, described secondary is stretched out in the outer end of described secondary breather pipe
Outside grain bed filter collector, and time clean qi leel branch pipe is communicated with and by the time anti-of concatenation by time net air valve of concatenation respectively
Purge valve is communicated with time blowback air branched pipe, described clean gas house steward to be communicated with time by time clean gas branch pipe valve of concatenation
Clean gas branch pipe, described time clean gas branch pipe is connected with described time clean qi leel branch pipe, is led on described blowback air house steward
The secondary blowback air manifold valve for crossing concatenation is communicated with time blowback gas branch pipe, described secondary blowback gas branch pipe and described secondary blowback qi leel
Branch pipe is connected；The secondary shock depositing dust plate for strengthening dust settling is provided with described secondary ash bucket.Here, utilizing time net air valve
With the unlatching of secondary clean gas branch pipe valve, the clean gas that will can be obtained after the secondary Bed Filtration in time granular-layer dust precipitator
Pass sequentially through time breather pipe, secondary clean qi leel branch pipe, secondary clean gas branch pipe and clean gas house steward output；Utilize secondary blowback gas branch pipe
The unlatching of valve and time blowback air valve, can pass sequentially through blowback air blowback air house steward, secondary blowback gas branch pipe, secondary blowback air branch
Pipe, the input of secondary breather pipe, deashing is fluidized to the secondary grain bed blowback in secondary granular-layer dust precipitator.
Time clean gas branch pipe is communicated with by time clean gas branch pipe valve of concatenation on described clean gas house steward, described is anti-
Time blowback gas branch pipe, described secondary granular-layer dust precipitator are communicated with by the secondary blowback air manifold valve of concatenation on air blowing house steward
In be provided with the clean gas extraction being provided with least one time grain bed, described secondary grain bed for being obtained after being filtered
Secondary breather pipe, the outer end of described secondary breather pipe is stretched out outside described secondary granular-layer dust precipitator, and passes through leading to for concatenation
Tracheae valve is connected with described time clean gas branch pipe and described secondary blowback gas branch pipe respectively.Here, eliminate time net air valve and
Secondary clean qi leel branch pipe, and time blowback air valve and time blowback air branched pipe are eliminated, simplify pipeline；Using Ventilating duct valve and time
The unlatching of clean gas branch pipe valve and the closing of secondary blowback air manifold valve, can be by through the secondary grain bed in time granular-layer dust precipitator
The clean gas obtained after filtering passes sequentially through time breather pipe, secondary clean gas branch pipe and clean gas house steward output；Utilize secondary blowback air
The unlatching of manifold valve and Ventilating duct valve and the closing of secondary clean gas branch pipe valve, can pass sequentially through blowback air blowback air house steward, secondary
Blowback gas branch pipe and time breather pipe input, deashing is fluidized to the secondary grain bed blowback in secondary granular-layer dust precipitator.
Upstream end on the net gas branch pipe of described trunk positioned at the described net gas branch pipe valve of trunk, which is connected with, has concatenated main row
The main exhaust pipeline of air valve, described ash-laden gas house steward by be serially connected with the main ash-laden gas air intake branch of main ash-laden gas intake valve with
It is located at described main ash-laden gas on the top connection of described host grain bed filter collector, described main ash-laden gas air intake branch
The main air inlet pipe road for having concatenated master air suction valve is connected with the downstream of intake valve.When host grain bed filter collector need preheat or
During displacement, thermal medium or displacement gas are entered in host grain bed filter collector by main air inlet pipe road, by main exhaust pipeline and
Outside main ash discharging hole discharge host grain bed filter collector.
Upstream end on described time clean gas branch pipe positioned at described time clean gas branch pipe valve, which is connected with, has concatenated time row
The secondary discharge duct of air valve, described ash-laden gas introduces and time ash-laden gas intake valve is serially connected with pipe, and described ash-laden gas introduces pipe
It is upper that the secondary admission line for having concatenated time intake valve is connected with the downstream of described secondary ash-laden gas intake valve.When secondary grain bed
When filter collector needs to preheat or replaced, thermal medium or displacement gas enter time granular-layer dust precipitator by secondary admission line
In, discharged by secondary discharge duct and time ash discharging hole outside time granular-layer dust precipitator.
Compared with prior art, the advantage of the invention is that：
1）Each host grain bed in host grain bed filter collector fluidizes deashing using online blowback, i.e., host grain bed, which is crossed, filters out
Filtering of the dirt device to ash-laden gas is carried out simultaneously with the fluidisation deashing of blowback in turn to each host grain bed, so during blowback
Cause the throughput fluctuation of ash-laden gas house steward small, so that the upstream equipment or upstream device to the Bed Filtration dust pelletizing system
Steady operation influence is small.
2）At least one granular-layer dust precipitator is set up, and in time will be in host grain bed using ash-laden gas introducing pipe
The fine dust not settled in filter collector is brought into time granular-layer dust precipitator and filtered, and can so promote host grain bed filtering
Dust settling in deduster, prevents fine dust from being spinned between each host grain bed of the bottom of host grain bed filter collector
And enrichment, i.e. high efficient and reliable eliminate in host grain bed filter collector and be difficult to the fine dust that settles, and can ensure that host grain
Each host grain bed of the bottom of bed filter collector can filtering balanced with each host grain bed on its top, reduction host grain bed
The upper and lower temperature difference of filter collector, prevents the bottom of host grain bed filter collector from occurring condensate（Such as tar）Precipitation.
3）The clean pneumatic transmission obtained after being filtered through secondary granular-layer dust precipitator is damaged to clean gas house steward in the absence of clean gas
Lose；Secondary granular-layer dust precipitator fluidizes deashing or offline blowback fluidisation deashing using online blowback, and online blowback fluidizes deashing
It is that filtering of the secondary granular-layer dust precipitator to the dust and gas containing fine powder and the blowback in turn to each grain bed fluidize deashing simultaneously
Carry out, offline blowback fluidisation deashing is that filtering of time granular-layer dust precipitator to the dust and gas containing fine powder is first, to secondary grain bed mistake
The blowback in turn of each grain bed in filtering dust remover fluidizes deashing rear.
Brief description of the drawings
Fig. 1 is the structural representation of the Bed Filtration dust pelletizing system of embodiment one；
Fig. 2 is the structural representation of the Bed Filtration dust pelletizing system of embodiment two；
Fig. 3 is the structural representation of the Bed Filtration dust pelletizing system of embodiment three；
Fig. 4 is the structural representation of the Bed Filtration dust pelletizing system of example IV；
Fig. 5 is the structural representation of the Bed Filtration dust pelletizing system of embodiment five；
Fig. 6 is the structural representation of the Bed Filtration dust pelletizing system of embodiment six；
Fig. 7 is the structural representation of the Bed Filtration dust pelletizing system of embodiment seven；
Fig. 8 is the structural representation of the Bed Filtration dust pelletizing system of embodiment eight.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
Embodiment one：
A kind of Bed Filtration dust pelletizing system that the present embodiment is proposed, as shown in figure 1, it includes three host grain bed dust removals by filtration
Device 1, one granular-layer dust precipitator 2, ash-laden gas house steward 3, clean gas house steward 4 and blowback air house steward 5, a host grain bed
Six layers, two every layer totally ten two host grains beds 11, the top of host grain bed filter collector 1 are provided with filter collector 1
It is connected with ash-laden gas house steward 3, specially ash-laden gas house steward 3 is by being serially connected with the main ash-laden gas air inlet branch of main ash-laden gas intake valve 31
Pipe 32 is connected with the top of host grain bed filter collector 1, and ash-laden gas house steward 3 conveys into host grain bed filter collector 1 to be contained
Dust and gas, host grain bed filter collector 1 is connected with clean gas house steward 4 and blowback air house steward 5 respectively, the clean output of gas house steward 4 master
Obtained clean gas after granular-layer dust precipitator 1 is filtered to ash-laden gas, the bottom of host grain bed filter collector 1 be provided with
Main ash discharging hole 62 is provided with the straight-through main ash bucket 61 of host grain bed filter collector 1, the bottom of main ash bucket 61, in host grain bed
The polylith that the lower section of undermost host grain bed 11 in filter collector 1 is provided with staggered arrangement is used to strengthen dust settling
Main shock depositing dust plate 65, main shock depositing dust plate 65 is located in main ash bucket 61, and blowback air house steward 5 is to host grain bed filter collector 1
Middle conveying blowback air is fluidized in deashing, one granular-layer dust precipitator 2 with online blowback and is provided with four layers, one every layer time
Grain bed 21, the top of secondary granular-layer dust precipitator 2 is provided with the top of connection time granular-layer dust precipitator 2 and main ash bucket
The ash-laden gas on 61 top introduces pipe 7, and the inlet end that ash-laden gas introducing pipe 7 is stretched into the top of main ash bucket 61 is particularly located at main
Time ash-laden gas is serially connected with the underface of undermost host grain bed 11 in grain bed filter collector 1, ash-laden gas introducing pipe 7 to enter
Air valve 71, ash-laden gas, which is introduced into pipe 7 and conveys to be contained in host grain bed filter collector 1 into secondary granular-layer dust precipitator 2, not to sink
The dust and gas containing fine powder of the fine dust of drop, secondary granular-layer dust precipitator 2 is connected with clean gas house steward 4 and blowback air house steward 5 respectively,
Clean gas house steward 4 exports the clean gas obtained after the 2 pairs of filterings of dust and gas containing fine powder of time granular-layer dust precipitator, blowback air house steward 5
Blowback air is conveyed into secondary granular-layer dust precipitator 2 deashing is fluidized with blowback, the bottom of secondary granular-layer dust precipitator 2 is set
Have and time ash discharging hole 64 is provided with the secondary ash bucket 63 straight-through with time granular-layer dust precipitator 2, the bottom of secondary ash bucket 63, at secondary
The polylith that the lower section of undermost grain bed 21 in grain bed filter collector 2 is provided with staggered arrangement sinks for strengthening dust
The secondary shock depositing dust plate 66 of drop, secondary shock depositing dust plate 66 is located in time ash bucket 63.Master in the Bed Filtration dust pelletizing system
Each host grain bed 11 in grain bed filter collector 1 fluidizes deashing, i.e. 1 pair of filter collector of host grain bed using online blowback
The filtering of ash-laden gas is carried out simultaneously with the fluidisation deashing of blowback in turn to each host grain bed 11, is so caused during blowback
The throughput fluctuation of ash-laden gas house steward 3 is small, so that the upstream equipment or upstream device to the Bed Filtration dust pelletizing system is steady
Determine work influence small；One granular-layer dust precipitator 2 is set up, and in time will be in host grain using ash-laden gas introducing pipe 7
The fine dust not settled in bed filter collector 1, which is brought into time granular-layer dust precipitator 2, to be filtered, and can so promote host grain bed
Dust settling in filter collector 1, prevents fine dust in each host grain bed 11 of the bottom of host grain bed filter collector 1
Between spin and be enriched with, i.e., eliminate to high efficient and reliable in host grain bed filter collector 1 and be difficult to the fine dust that settles, and can be true
Each host grain bed 11 for protecting the bottom of host grain bed filter collector 1 can be equalized with each host grain on its top bed 11
Filter, reduces the upper and lower temperature difference of host grain bed filter collector 1, prevents the bottom of host grain bed filter collector 1 from occurring condensate
（Such as tar）Precipitation；The clean pneumatic transmission obtained after being filtered through secondary granular-layer dust precipitator 2 is not present to clean gas house steward 4
Clean gas loss；Secondary granular-layer dust precipitator 2 fluidizes deashing or offline blowback fluidisation deashing, online blowback using online blowback
Fluidize filtering and the blowback stream in turn to each grain bed 21 that deashing is time 2 pairs of dust and gas containing fine powder of granular-layer dust precipitator
Change deashing to carry out simultaneously, offline blowback fluidisation deashing is that time filtering of 2 pairs of dust and gas containing fine powder of granular-layer dust precipitator is first, right
The fluidisation deashing of blowback in turn of each grain bed 21 in secondary granular-layer dust precipitator 2 is rear, and ash-removal effect is good.
In the present embodiment, the upstream of blowback air house steward 5 is connected with back blowing machine 91, and the entrance point of back blowing machine 91 is passed through
Clean gas, the entrance point of back blowing machine 91 and outside clean gas air-introduced machine during actual treatment（Not shown in figure）The port of export connect
Clean gas gas holder logical or with outside（Not shown in figure）Connection connects to be passed through clean gas, back-blowing with clean gas house steward 4
The heater 92 for heating clean gas is provided between the port of export of machine 91 and the inlet end of blowback air house steward 5, heating is utilized
Device 92 heats the clean gas of low temperature, the clean gas after heating is reached the temperature needed for blowback.
In the present embodiment, the top of secondary ash bucket 63 is connected with the dust-laden blowback air fairlead for exporting dust-laden blowback air
81, the inlet end that dust-laden blowback air fairlead 81 is stretched into the top of time ash bucket 63 is particularly located at time granular-layer dust precipitator 2
In undermost grain bed 21 underface, the outlet side of dust-laden blowback air fairlead 81 is connected with anti-for purifying dust-laden
The cleaning equipment of air blowing, the dust-laden blowback air drawn by dust-laden blowback air fairlead 81 out of secondary ash bucket 63 can be by cleaning equipment
High-efficient purification, the blowback air after purification can be sent to the upstream device of clean gas house steward 4, thus be damaged in the absence of clean blowback air
Lose.Here, cleaning equipment includes scrubbing tower 83 and air-introduced machine 84, outlet side and the scrubbing tower 83 of dust-laden blowback air fairlead 81
Air inlet is connected, the gas outlet of scrubbing tower 83 concatenation is connected after drawing valve 82 with the entrance point of air-introduced machine 84, and air-introduced machine 84 goes out
Clean blowback air after the output purification of mouth end；Each grain bed 21 in secondary granular-layer dust precipitator 2 is carried out in turn
When blowback fluidizes deashing, the dust-laden blowback air drawn through dust-laden blowback air fairlead 81 is washed by scrubbing tower 83, and scrubbing tower 83 is defeated
The clean blowback air gone out is sent to the upstream device of clean gas house steward 4 by air-introduced machine 84；Valve 82 is drawn in actual treatment can also go here and there
It is connected between the outlet side of dust-laden blowback air fairlead 81 and the air inlet of scrubbing tower 83, only because dust-laden blowback air fairlead
The temperature of the 81 dust-laden blowback airs drawn is of a relatively high, so also higher to drawing the temperature requirement of valve 82, and suitable for high temperature
Valve price it is of a relatively high, therefore can by draw valve 82 be arranged at the gas outlet of scrubbing tower 83 and air-introduced machine 84 entrance point it
Between, reduce the price for drawing valve 82.
In the present embodiment, the main ventilation that the clean gas for being obtained after being filtered is drawn is provided with host grain bed 11
Pipe 12, the outer end of main breather pipe 12 is stretched out outside host grain bed filter collector 1, and is connected respectively by the net air valve 44 of master of concatenation
There is the net qi leel branch pipe 41 of trunk and main blowback air branched pipe 54, clean gas house steward 4 are communicated with by the main blowback air valve 53 of concatenation
It is upper that the net gas branch pipe 43 of trunk, the net gas branch pipe 43 of trunk and the net qi leel branch of trunk are communicated with by the net gas branch pipe valve 42 of trunk concatenated
Pipe 41 is connected, and main blowback gas branch pipe 56, main blowback air are communicated with by the main blowback air manifold valve 55 of concatenation on blowback air house steward 5
Branch pipe 56 is connected with main blowback air branched pipe 54., can be by here, using the unlatching of main net air valve 44 and the net gas branch pipe valve 42 of trunk
The clean gas obtained after the filtering of host grain bed 11 in host grain bed filter collector 1 passes sequentially through main breather pipe 12, trunk
Net qi leel branch pipe 41, the net gas branch pipe 43 of trunk and clean gas house steward 4 export；Utilize main blowback air manifold valve 55 and main blowback air valve
53 unlatching, can pass sequentially through blowback air blowback air house steward 5, main blowback gas branch pipe 56, main blowback air branched pipe 54, main ventilation
Pipe 12 is inputted.
In the present embodiment, the secondary ventilation that the clean gas for being obtained after being filtered is drawn is provided with secondary grain bed 21
Pipe 22, the outer end of secondary breather pipe 22 is stretched out outside time granular-layer dust precipitator 2, and is connected respectively by time net air valve 45 of concatenation
There is time clean qi leel branch pipe 46 and time blowback air branched pipe 58, clean gas house steward 4 are communicated with by the secondary blowback air valve 57 of concatenation
It is upper that time clean gas branch pipe 48, secondary clean gas branch pipe 48 and time clean qi leel branch are communicated with by time clean gas branch pipe valve 47 concatenated
Pipe 46 is connected, and time blowback gas branch pipe 51, secondary blowback air are communicated with by the secondary blowback air manifold valve 59 of concatenation on blowback air house steward 5
Branch pipe 51 is connected with time blowback air branched pipe 58., can be by here, using the unlatching of time net air valve 45 and time clean gas branch pipe valve 47
After being filtered through the secondary grain bed 21 in secondary granular-layer dust precipitator 2 obtained clean gas pass sequentially through time breather pipe 22, it is secondary dry
Net qi leel branch pipe 46, secondary clean gas branch pipe 48 and clean gas house steward 4 export；Utilize secondary blowback air manifold valve 59 and time blowback air valve
57 unlatching, can pass sequentially through blowback air blowback air house steward 5, secondary blowback gas branch pipe 51, secondary blowback air branched pipe 58, secondary ventilation
Pipe 22 is inputted, and deashing is fluidized to the blowback of secondary grain bed 21 in secondary granular-layer dust precipitator 2.
In the present embodiment, ash-laden gas introduces pipe 7 and is made up of ash-laden gas extraction branch pipe 72 and ash-laden gas gathering tube 73, dust-laden
The inlet end that gas draws branch pipe 72 is stretched into the top of main ash bucket 61 and is located at undermost in host grain bed filter collector 1
The underface of host grain bed 11, ash-laden gas is drawn and branch pipe valve 74 is serially connected with branch pipe 72, and ash-laden gas draws the outlet of branch pipe 72
End is connected with ash-laden gas gathering tube 73, and secondary ash-laden gas intake valve 71 is serially connected with ash-laden gas gathering tube 73, ash-laden gas gathering tube 73
Outlet side connected with the top of time granular-layer dust precipitator 2.
The course of work of the Bed Filtration dust pelletizing system of the present embodiment is：In three host grain bed filter collectors 1
11 pairs of ash-laden gases from ash-laden gas house steward 3 of totally three ten six host grains bed carry out parallel filtering, what is obtained after filtering is clean
Gas is come together in clean gas house steward 4 by main breather pipe 12, the net qi leel branch pipe 41 of trunk, the net gas branch pipe 43 of trunk and exported；Blowback
The blowback air that gas house steward 5 introduces is after main blowback gas branch pipe 56, main blowback air branched pipe 54, main breather pipe 12 to host grain bed 11
Carry out blowback fluidisation deashing, blowback air mixes with ash-laden gas, relatively coarse granule in ash-laden gas and by blowback air from host grain bed 11
The particle for the reunion thickening taken out of is deposited to main ash bucket 61 and discharged, and the fine dust not settled in ash-laden gas and blowback air is hit through master
Hit after the depositing dust of depositing dust plate 65 to be introduced into pipe 7 by ash-laden gas and take in time granular-layer dust precipitator 2 and filter, effectively prevent thin
Dust is spinned and is enriched between the host grain bed 11 of the bottom of host grain bed filter collector 1, through secondary granular-layer dust precipitator 2
The clean gas obtained after filtering comes together in clean gas by secondary breather pipe 22, secondary clean qi leel branch pipe 46, secondary clean gas branch pipe 48
Exported in house steward 4；The blowback air that blowback air house steward 5 introduces is through time blowback gas branch pipe 51, secondary blowback air branched pipe 58, secondary breather pipe
22 inputs carry out blowback fluidisation deashing to secondary grain bed 21, and the dust-laden blowback air of secondary granular-layer dust precipitator 2 is from dust-laden blowback
Gas fairlead 81 is taken out of, and the downstream that the clean blowback air after the scrubbed washing of tower 83 is sent to clean gas house steward 4 by air-introduced machine 84 is set
It is standby.
The Bed Filtration dust pelletizing system of the present embodiment is applied to have condensate during filtering cooling（Such as tar）What is separated out contains
Dust and gas, such as coal, the Low Temperature Thermal of biomass.
Embodiment two：
A kind of Bed Filtration dust pelletizing system that the present embodiment is proposed, as shown in Fig. 2 the Bed Filtration of itself and embodiment one is removed
The structure of dirt system is essentially identical, the difference is that only：The upstream of blowback air house steward 5 is connected with back blowing machine 91, back-blowing
The entrance point of machine 91 is passed through clean gas, the entrance point of back blowing machine 91 and outside clean gas air-introduced machine during actual treatment（Do not draw
Go out）Port of export connection or connected with outside clean gas gas holder to be passed through clean gas, the port of export of back blowing machine 91 and blowback
The blender 93 for mixing clean gas and high-temperature flue gas is provided between the inlet end of gas house steward 5, blender 93, which is connected with, to be carried
For the burner 94 of high-temperature flue gas, by being mixed into the temperature that high-temperature flue gas brings up to the clean gas of low temperature needed for blowback, to subtract
The mixed volume of few high-temperature flue gas, burner 94 can use oxygen-enriched combusting.Cleaning equipment includes gas cooler 85, sack cleaner
86 and air-introduced machine 84, the outlet side of dust-laden blowback air fairlead 81 is connected with the input of gas cooler 85, gas cooler
85 output end is connected with the input of sack cleaner 86, with air inducing after the output end concatenation extraction valve 82 of sack cleaner 86
The entrance point connection of machine 84, the clean blowback air after the port of export output purification of air-introduced machine 84；To secondary Bed Filtration dedusting
When each grain bed 21 in device 2 carries out the fluidisation deashing of blowback in turn, the dust-laden drawn through dust-laden blowback air fairlead 81 is anti-
Air blowing, which is passed sequentially through, obtains clean blowback air after gas cooler 85 and the purification of sack cleaner 86, then will be clean by air-introduced machine 84
Blowback air is sent to the upstream device of clean gas house steward 4；Valve 82 is drawn in actual treatment can also be serially connected with the extraction of dust-laden blowback air
Between the outlet side of pipe 81 and the input of gas cooler 85, only because the dust-laden that dust-laden blowback air fairlead 81 is drawn is anti-
The temperature of air blowing is of a relatively high, so also higher to drawing the temperature requirement of valve 82, and the price suitable for the valve of high temperature is relative
It is higher, therefore extraction valve 82 can be arranged between the entrance point of the output end of sack cleaner 86 and air-introduced machine 84, reduce
Draw the price of valve 82.
By the cleaning equipment used is different, therefore the Bed Filtration dust pelletizing system of the present embodiment is applied to filtering drop
Frozen-free thing when warm（Such as tar）The ash-laden gas of precipitation.
Embodiment three：
A kind of Bed Filtration dust pelletizing system that the present embodiment is proposed, as shown in figure 3, the Bed Filtration of itself and embodiment one is removed
The structure of the structure of dirt system or the Bed Filtration dust pelletizing system of embodiment two is essentially identical, the difference is that only：Blowback
The upstream of gas house steward 5 is connected with back blowing machine 91, and the entrance point of back blowing machine 91 is passed through high-temperature flue gas, by blowback during actual treatment
The entrance point of blower fan 91 and high-temperature flue gas pipeline（Not shown in figure）Connection, is passed directly into high-temperature flue gas, meets blowback with temperature
Required high-temperature flue gas is used as blowback air.With ash-laden gas house steward after the outlet side concatenation extraction valve 82 of dust-laden blowback air fairlead 81
3 connections, close time clean gas branch pipe valve 47 and time ash-laden gas intake valve 71 during blowback, by dust-laden blowback air fairlead 81 from secondary
The dust-laden blowback air drawn in ash bucket 63 is introduced directly into dust-laden after the polylith time in secondary ash bucket 63 hits the depositing dust of depositing dust plate 66
In gas house steward 3, then filtered.
Directly it is connected after drawing valve 82 due to the outlet side concatenation of dust-laden blowback air fairlead 81 with ash-laden gas house steward 3, because
The easy dust for being agglomerated into coarse granule and being easy to sedimentation when the Bed Filtration dust pelletizing system of this present embodiment is applied to filtering.
Example IV：
A kind of Bed Filtration dust pelletizing system that the present embodiment is proposed, as shown in figure 4, the Bed Filtration of itself and embodiment three is removed
The structure of dirt system is essentially identical, the difference is that only：Eliminate dust-laden blowback air fairlead 81 and be serially connected with its outlet side
Extraction valve 82, each grain bed 21 in secondary granular-layer dust precipitator 2 carry out offline（Close time clean gas branch pipe
Valve 47）In turn during blowback fluidisation deashing, dust-laden blowback air introduces pipe 7 through ash-laden gas and is transmitted back to main ash bucket 61, through in main ash bucket 61
Main shock depositing dust plate 65 reinforcing dust settling after, enter back into host grain bed 11 filter.
Easily coarse granule is agglomerated into when the Bed Filtration dust pelletizing system of the present embodiment is applied to filtering and is easy to sedimentation
Dust.
Embodiment five：
A kind of Bed Filtration dust pelletizing system that the present embodiment is proposed, as shown in figure 5, the Bed Filtration of itself and embodiment two is removed
The structure of dirt system is essentially identical, the difference is that only：Cleaning equipment includes scrubbing tower 83 and air-introduced machine 84, dust-laden blowback air
The outlet side of fairlead 81 is connected with the air inlet of scrubbing tower 83, with air-introduced machine after the gas outlet concatenation extraction valve 82 of scrubbing tower 83
84 entrance point connection, the clean blowback air after the port of export output purification of air-introduced machine 84；To secondary granular-layer dust precipitator 2
In each grain bed 21 carry out blowback in turn fluidisation deashing when, through dust-laden blowback air fairlead 81 draw dust-laden blowback air
Washed by scrubbing tower 83, the clean blowback air that scrubbing tower 83 is exported is sent to the upstream device of clean gas house steward 4 by air-introduced machine 84.
Embodiment six：
A kind of Bed Filtration dust pelletizing system that the present embodiment is proposed, as shown in fig. 6, the Bed Filtration of itself and embodiment one is removed
The structure of dirt system is essentially identical, the difference is that only：The upstream of blowback air house steward 5 is connected with back blowing machine 91, back-blowing
The entrance point of machine 91 is passed through high-temperature flue gas, by the entrance point of back blowing machine 91 and high-temperature flue gas pipeline during actual treatment（In figure not
Show）Connection, is passed directly into high-temperature flue gas, the high-temperature flue gas needed for meeting blowback using temperature is used as blowback air.
Cleaning equipment in above-described embodiment one, two, five and six can also be substituted by existing other ripe cleaning equipments；
The technology of the blowback air of temperature also can be by existing other ripe technical substitutions needed for being obtained in each above-mentioned embodiment；Obtain
The technology and cleaning equipment of the blowback air of required temperature or directly dust-laden blowback air is passed through ash-laden gas house steward 3 again can be any
Combination of two.
Embodiment seven：
In each above-mentioned embodiment, time net air valve 45 and time clean qi leel branch pipe 46 can be saved, and save time He of blowback air valve 57
Secondary blowback air branched pipe 58, to simplify pipeline, as shown in fig. 7, by time clean gas branch pipe valve 47 of concatenation on clean gas house steward 4
It is communicated with time clean gas branch pipe 48, blowback air house steward 5 and time blowback air branch is communicated with by the secondary blowback air manifold valve 59 of concatenation
The secondary breather pipe 22 that the clean gas for being obtained after being filtered is drawn, secondary breather pipe 22 are provided with pipe 51, secondary grain bed 21
Outer end stretch out outside time granular-layer dust precipitator 2, and by the Ventilating duct valve 23 of concatenation respectively with secondary clean gas branch pipe 48 and
Secondary blowback gas branch pipe 51 is connected.Here, unlatching and secondary blowback gas branch pipe using Ventilating duct valve 23 and time clean gas branch pipe valve 47
The closing of valve 59, the clean gas obtained after being filtered through the secondary grain bed 21 in time granular-layer dust precipitator 2 is passed sequentially through
Secondary breather pipe 22, secondary clean gas branch pipe 48 and clean gas house steward 4 export；Utilize secondary blowback air manifold valve 59 and Ventilating duct valve 23
Open and secondary clean gas branch pipe valve 47 closing, blowback air can be passed sequentially through to blowback air house steward 5, secondary blowback gas branch pipe 51 and secondary
Breather pipe 22 is inputted, and deashing is fluidized to the blowback of secondary grain bed 21 in secondary granular-layer dust precipitator 2.
Embodiment eight：
In each above-mentioned embodiment, it is considered to which host grain bed filter collector 1 needs to preheat or replaced and secondary Bed Filtration dedusting
Device 2 needs to preheat or replaced, and sets up part, as shown in figure 8, being specially：It is located at the net gas branch pipe of trunk on the net gas branch pipe 43 of trunk
The upstream end of valve 42 is connected with the main exhaust pipeline 94 for having concatenated main exhaust valve 93, and thermal medium or displacement gas pass through main exhaust pipeline
94 and main ash discharging hole 62 discharge host grain bed filter collector 1 outside, on main ash-laden gas air intake branch 32 be located at main ash-laden gas air inlet
The main air inlet pipe road 96 for having concatenated master air suction valve 95 is connected with the downstream of valve 31, thermal medium or displacement gas pass through main air inlet pipe road
96 enter in host grain bed filter collector 1；It is located at time upstream end connection of clean gas branch pipe valve 47 on secondary clean gas branch pipe 48
There is the secondary discharge duct 98 for having concatenated time air bleeding valve 97, thermal medium or displacement gas pass through secondary discharge duct 98 and time row of ash discharging hole 64
Go out outside time granular-layer dust precipitator 2, ash-laden gas is introduced on pipe 7 to be located to be connected with time downstream of ash-laden gas intake valve 71 and gone here and there
The secondary admission line 90 of time intake valve 99 is connect, thermal medium or displacement gas enter time Bed Filtration dedusting by secondary admission line 90
In device 2.
Claims (10)
1. a kind of Bed Filtration dust pelletizing system, including at least one host grain bed filter collector, ash-laden gas house steward, clean gas
House steward and blowback air house steward, the top of described host grain bed filter collector are connected with described ash-laden gas house steward, described
Ash-laden gas house steward conveys ash-laden gas, described host grain bed filter collector difference into described host grain bed filter collector
It is connected with described clean gas house steward and described blowback air house steward, the described host grain bed mistake of described clean gas house steward output
Obtained clean gas after filtering dust remover is filtered to ash-laden gas, the bottom of described host grain bed filter collector be provided with it is described
The straight-through main ash bucket of host grain bed filter collector, it is characterised in that：Described blowback air house steward is to described host grain bed
Blowback air is conveyed in filter collector deashing is fluidized with blowback, the Bed Filtration dust pelletizing system also includes at least one particle
Secondary granular-layer dust precipitator and institute described in connection are provided with bed filter collector, described secondary granular-layer dust precipitator
The ash-laden gas on the top for the main ash bucket stated introduces pipe, and described ash-laden gas is introduced into pipe into described secondary granular-layer dust precipitator
Conveying is contained in the dust and gas containing fine powder for the fine dust not settled in described host grain bed filter collector, described secondary grain bed mistake
Filtering dust remover is connected with described clean gas house steward and described blowback air house steward respectively, and described clean gas house steward output is described
Secondary granular-layer dust precipitator dust and gas containing fine powder is filtered after obtained clean gas, described blowback air house steward is to described time
Blowback air is conveyed in granular-layer dust precipitator deashing is fluidized with blowback, the bottom of described secondary granular-layer dust precipitator is set
There is the secondary ash bucket led directly to described secondary granular-layer dust precipitator.
2. a kind of Bed Filtration dust pelletizing system according to claim 1, it is characterised in that：The top of described secondary ash bucket
The dust-laden blowback air fairlead for exporting dust-laden blowback air is connected with, the outlet side of described dust-laden blowback air fairlead is connected
Have a cleaning equipment for purifying dust-laden blowback air, or described dust-laden blowback air fairlead outlet side concatenation draw after valve with
Described ash-laden gas house steward connection.
3. a kind of Bed Filtration dust pelletizing system according to claim 2, it is characterised in that：Described cleaning equipment includes
Scrubbing tower and air-introduced machine, the outlet side of described dust-laden blowback air fairlead are connected with the air inlet of described scrubbing tower, described
Scrubbing tower gas outlet concatenation draw valve after be connected with the entrance point of described air-introduced machine, the port of export of described air-introduced machine is defeated
The clean blowback air gone out after purification；
Or described cleaning equipment includes gas cooler, sack cleaner and air-introduced machine, described dust-laden blowback air fairlead
Outlet side be connected with the input of described gas cooler, the output end of described gas cooler is removed with described cloth bag
The input connection of dirt device, the entrance point that the output end concatenation of described sack cleaner is drawn after valve with described air-introduced machine connects
Connect, the port of export of described air-introduced machine exports the clean blowback air after purification.
4. a kind of Bed Filtration dust pelletizing system according to any one of claim 1 to 3, it is characterised in that：Described
The upstream of blowback air house steward is connected with back blowing machine, and the entrance point of described back blowing machine is passed through clean gas, described back-blowing
The heater for heating clean gas is provided between the port of export of machine and the inlet end of described blowback air house steward, or it is described
It is provided between the port of export of back blowing machine and the inlet end of described blowback air house steward for mixing clean gas and high-temperature flue gas
Blender, described blender connection is provided with the burner of high-temperature flue gas.
5. a kind of Bed Filtration dust pelletizing system according to any one of claim 1 to 3, it is characterised in that：Described
The upstream of blowback air house steward is connected with back blowing machine, and the entrance point of described back blowing machine is passed through high-temperature flue gas.
6. a kind of Bed Filtration dust pelletizing system according to claim 1, it is characterised in that：Described host grain bed filtering
Be provided with deduster at least one host grain bed, described host grain bed be provided with it is clean for what is obtained after being filtered
The main breather pipe that gas is drawn, the outer end of described main breather pipe is stretched out outside described host grain bed filter collector, and leads to respectively
The net air valve of master for crossing concatenation is communicated with the net qi leel branch pipe of trunk and is communicated with main blowback air branch by the main blowback air valve of concatenation
The net gas branch pipe of trunk is communicated with by the net gas branch pipe valve of trunk of concatenation on pipe, described clean gas house steward, described trunk is net
Gas branch pipe is connected with the net qi leel branch pipe of described trunk, is connected on described blowback air house steward by the main blowback air manifold valve of concatenation
Main blowback gas branch pipe is connected with, described main blowback gas branch pipe is connected with described main blowback air branched pipe；In described main ash bucket
It is provided with the main shock depositing dust plate for strengthening dust settling.
7. a kind of Bed Filtration dust pelletizing system according to claim 6, it is characterised in that：Described secondary Bed Filtration
Be provided with deduster at least one time grain bed, described secondary grain bed be provided with it is clean for what is obtained after being filtered
The secondary breather pipe that gas is drawn, the outer end of described secondary breather pipe is stretched out outside described secondary granular-layer dust precipitator, and leads to respectively
Time net air valve for crossing concatenation is communicated with time clean qi leel branch pipe and is communicated with time blowback air branch by the secondary blowback air valve of concatenation
Manage, time clean gas branch pipe is communicated with by time clean gas branch pipe valve of concatenation on described clean gas house steward, described is secondary clean
Gas branch pipe is connected with described time clean qi leel branch pipe, is connected on described blowback air house steward by the secondary blowback air manifold valve of concatenation
Time blowback gas branch pipe is connected with, described secondary blowback gas branch pipe is connected with described secondary blowback air branched pipe；In described secondary ash bucket
It is provided with the secondary shock depositing dust plate for strengthening dust settling.
8. a kind of Bed Filtration dust pelletizing system according to claim 6, it is characterised in that：On described clean gas house steward
The secondary blowback on time clean gas branch pipe, described blowback air house steward by concatenation is communicated with by time clean gas branch pipe valve of concatenation
Gas branch pipe valve, which is communicated with time blowback gas branch pipe, described secondary granular-layer dust precipitator, is provided with least one grain bed,
The secondary breather pipe that the clean gas for being obtained after being filtered is drawn, described secondary breather pipe are provided with described secondary grain bed
Outer end stretch out outside described secondary granular-layer dust precipitator, and by the Ventilating duct valve of concatenation respectively with described clean gas
Branch pipe is connected with described secondary blowback gas branch pipe.
9. a kind of Bed Filtration dust pelletizing system according to claim 7 or 8, it is characterised in that：The net gas of described trunk
Upstream end on branch pipe positioned at the described net gas branch pipe valve of trunk is connected with the main exhaust pipeline for having concatenated main exhaust valve, described
Ash-laden gas house steward is by being serially connected with the main ash-laden gas air intake branch of main ash-laden gas intake valve and described host grain bed dust removal by filtration
It is located on the top connection of device, described main ash-laden gas air intake branch at the downstream of described main ash-laden gas intake valve and is connected with
Concatenate the main air inlet pipe road of master air suction valve.
10. a kind of Bed Filtration dust pelletizing system according to claim 9, it is characterised in that：Described time clean gas branch
The upstream end for being located at described time clean gas branch pipe valve on pipe is connected with the secondary discharge duct for having concatenated time air bleeding valve, and described contains
Dust and gas introduces and time ash-laden gas intake valve is serially connected with pipe, and described ash-laden gas, which is introduced, is located at described secondary ash-laden gas intake valve on pipe
Downstream at be connected with the secondary admission line for having concatenated time intake valve.
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| CN106975305B (en) | 2022-07-15 |
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