CN104878203B - Furnace gas graded temperature-control dust cleaning Processes and apparatus - Google Patents
Furnace gas graded temperature-control dust cleaning Processes and apparatus Download PDFInfo
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- CN104878203B CN104878203B CN201410073894.7A CN201410073894A CN104878203B CN 104878203 B CN104878203 B CN 104878203B CN 201410073894 A CN201410073894 A CN 201410073894A CN 104878203 B CN104878203 B CN 104878203B
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Abstract
A kind of equipment the invention discloses furnace gas graded temperature-control dust cleaning technique and for the technique, the processing step include：1）Furnace gas caused by Industrial Stoves is introduced into a furnace gas graded temperature-control dust cleaning equipment；2）The first order temperature control cooling unit that the furnace gas is introduced into the equipment, separate out part material cooling to be recycled and form the first dust and collect in first order temperature control cooling unit；3）By first order temperature control cooling unit discharge and carry the first dust furnace gas be introduced into first order filtering unit carry out dust separation and further collect obtain the first dust；4）The furnace gas that first order filtering unit is discharged introduces second level temperature control cooling unit, separates out part material cooling to be recycled and forms the second dust and collect in the temperature control cooling unit of the second level；5）By second level temperature control cooling unit discharge and carry the second dust furnace gas be introduced into the filtering unit of the second level carry out dust separation and further collect obtain the second dust.
Description
Technical field
The present invention relates to a kind of furnace gas graded temperature-control dust cleaning Processes and apparatus.
Background technology
Inventor has found, different containing two or more de-sublimation temperature sometimes in furnace gas caused by Industrial Stoves
Gaseous material, wherein the solid particle that is formed just and has independent use value after the cooling of every kind of material, and at present
Furnace gas processing mode can only often access the solid mixture of these materials again, and this is just the independent recovery of various solid particles
Bring compared with burden.For example, lead anode slurry melting furnace gas（Lead anode slurry is caused byproduct during electrolytic lead refining,
Valuables therein are mainly reclaimed by pyrogenic attack technique at present, need to carry out melting to lead anode slurry during processing, so as to produce
Raw furnace gas）Middle main component is arsenic trioxide, antimony oxide（The de-sublimation temperature of antimony oxide is higher than arsenic trioxide）,
And containing small amounts lead etc., antimony, arsenic content are higher in the dust that the furnace gas is formed after cooling, the dust or by also at present
The series of steps such as original-ball pressure-roasting produce needle antimony and white arsenic respectively, or are mixed and successively through distilling, condensing life with charcoal
Arsenic antimony alloy is produced, or uses water under high pressure soaking technology, these subsequent treatment process are cumbersome.Certainly, except above-mentioned lead sun
Outside the mud melting furnace gas of pole, the high-temperature furnace gas of the other field such as non-ferrous metal metallurgy equally exists problems.
The content of the invention
Technical problems to be solved first of the invention are to provide a kind of furnace gas graded temperature-control dust cleaning technique and for these
The equipment of technique, for being treated back in furnace gas caused by Industrial Stoves containing the different gaseous state of two or more de-sublimation temperature
The situation of material is received, recovery material is treated and carries out enriching and recovering respectively.
Secondly technical problem to be solved is to provide a kind of lead anode slurry melting high-temperature furnace gas graded temperature-control receipts to the present invention
Dirt purification technique, to obtain the arsenic trioxide of higher degree and antimony oxide respectively.
The step of furnace gas graded temperature-control dust cleaning technique of the present invention, includes：
1）Furnace gas caused by Industrial Stoves is introduced into a furnace gas graded temperature-control dust cleaning equipment, is introducing furnace gas classification
Contain the different gaseous state of at least two de-sublimation temperatures material to be recycled in the furnace gas before temperature control dust cleaning equipment；
2）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, the furnace gas is introduced into the equipment
First order temperature control cooling unit, separate out part material cooling to be recycled and form the first dust and collect in the cooling of first order temperature control
In unit；
3）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, first order temperature control cooling unit is discharged
And the furnace gas for carrying the first dust is introduced into first order filtering unit and carries out dust separation and further collect to obtain the
One dust；
4）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, first order filtering unit is discharged
Furnace gas introduce second level temperature control cooling unit, separate out part material to be recycled cooling and form the second dust and collect second
In level temperature control cooling unit；
5）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, second level temperature control cooling unit is discharged
And the furnace gas for carrying the second dust is introduced into the filtering unit of the second level and carries out dust separation and further collect to obtain the
Two dust；
The first dust that above-mentioned collection obtains is the dust for being enriched with a kind of material to be recycled, and the second dust is enrichment
There is a kind of dust of material to be recycled, the gas of second level filtering unit discharge enters subsequent recovery and handles or arrange
Put.
It may be noted that the subsequent recovery that the gas that second level filtering unit is discharged is carried out is handled, it is included in above-mentioned
Continue the feelings handled using the temperature control cooling unit and filtering unit of next stage or multistage furnace gas on the basis of step
Condition.
For the furnace gas graded temperature-control dust cleaning equipment of above-mentioned technique, including：
First order temperature control cooling unit, the first order temperature control cooling unit are received caused by Industrial Stoves containing at least
The furnace gas of the two kinds of different gaseous state of de-sublimation temperature materials to be recycled, and which part material cooling to be recycled is separated out and forms first
Dust is simultaneously collected in first order temperature control cooling unit；
First order filtering unit, the first order filtering unit receive the discharge of first order temperature control cooling unit
The furnace gas of the first dust is carried, and further collects to obtain the first described powder by carrying out dust separation to the furnace gas
Dirt；
Second level temperature control cooling unit, the second level temperature control cooling unit receive the discharge of first order filtering unit
Furnace gas, and which part material cooling to be recycled is separated out and forms the second dust and collects in the temperature control cooling unit of the second level；
Second level filtering unit, the second level filtering unit receive the discharge of second level temperature control cooling unit
The furnace gas of the second dust is carried, and further collects to obtain the second described powder by carrying out dust separation to the furnace gas
Dirt；And
Power set, it is single that furnace gas caused by the power set driving Industrial Stoves passes sequentially through the cooling of first order temperature control
Member, first order filtering unit, second level temperature control cooling unit and second level filtering unit；
Wherein, furnace gas is in Industrial Stoves, first order temperature control cooling unit, first order filtering unit, second level temperature control
The temperature for making gaseous state material to be recycled not separate out substantially is maintained at when being transmitted between cooling unit and second level filtering unit
Under state；First dust is the dust for being enriched with a kind of material to be recycled, and the second dust is treated back to be enriched with described one kind
Receive the dust of material.
In above-mentioned Processes and apparatus, temperature control cooling unit has following function：Firstth, it can control to export the temperature of furnace gas
Degree；Secondth, the dust that can be separated out to cooling is collected.In order to reach above-mentioned function, temperature control cooling unit can use warp
The gravitational precipitator of transformation is crossed, i.e., it is cold to increase injection nitrogen etc. into the furnace gas for entering the gravitational precipitator on gravitational precipitator
But the device of gas（The injection rate for cooling down gas is set according to gravitational precipitator outlet temperature）, so as to be carried out in the lump in temperature-fall period
Gather dust.Because temperature control cooling unit is difficult to accomplish accurate dedusting, therefore above-mentioned Processes and apparatus is also set after temperature control cooling unit
Filtering unit is put, to improve the rate of recovery to dust.In a word, can be to two kinds or two using above-mentioned Processes and apparatus
The different material to be recycled of kind above de-sublimation temperature carries out enriching and recovering respectively.
On the basis of above-mentioned furnace gas graded temperature-control dust cleaning technique, when furnace gas caused by Industrial Stoves is temperature
During 600-900 DEG C of lead anode slurry melting furnace gas, gaseous state material to be recycled therein is respectively antimony oxide and three oxidations two
Arsenic；Furnace gas graded temperature-control dust cleaning equipment can be provided only with single including first order temperature control cooling unit and the cooling of second level temperature control
Two-stage temperature control cooling unit including member, the furnace gas export temperature control of first order temperature control cooling unit is 400-500 DEG C, the
The furnace gas export temperature control of two level temperature control cooling unit is 110-120 DEG C, passes through first order temperature control cooling unit and the first order
Filtering unit is collected to obtain the first dust of enrichment antimony, passes through second level temperature control cooling unit and second level gas filtration list
Member, which is collected, obtains the second dust for being enriched with arsenic.Because the furnace gas export temperature control of first order temperature control cooling unit is 400-500
DEG C, therefore, higher degree can be reached by collecting the antimony oxide of the first dust in first order temperature control cooling unit, be easy to three
The direct utilization of two antimony is aoxidized, simultaneously because the content of antimony oxide is higher in the first dust, then into the second dust
Antimony is reduced, therefore the content of the arsenic in the second dust is relatively higher, consequently facilitating subsequently extracting arsenic from the second dust.
In order to obtain the higher antimony oxide of purity, and can obtains the higher arsenic trioxide of purity, the present invention
Following lead anode slurry melting high-temperature furnace gas graded temperature-control dust cleaning technique is additionally provided, its step includes：
1）600-900 DEG C of lead anode slurry melting furnace gas of temperature caused by Industrial Stoves is introduced into a furnace gas graded temperature-control
Dust cleaning equipment, contain antimony oxide and three in the furnace gas being introduced into before the furnace gas graded temperature-control dust cleaning equipment
Aoxidize two arsenic, the two kinds of different gaseous state of de-sublimation temperature materials to be recycled；
2）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, the furnace gas is introduced into the equipment
First order temperature control cooling unit, the furnace gas export temperature control of first order temperature control cooling unit is 400-500 DEG C, treats part
Material cooling is reclaimed to separate out the first dust of formation and collect in first order temperature control cooling unit；
3）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, first order temperature control cooling unit is discharged
And the furnace gas for carrying the first dust is introduced into first order filtering unit and carries out dust separation and further collect to obtain the
One dust；
4）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, first order filtering unit is discharged
Furnace gas introduce second level temperature control cooling unit, the furnace gas export temperature control of second level temperature control cooling unit is 300-400
DEG C, separate out part material cooling to be recycled and form the second dust and collect in the temperature control cooling unit of the second level；
5）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, second level temperature control cooling unit is discharged
And the furnace gas for carrying the second dust is introduced into the filtering unit of the second level and carries out dust separation and further collect to obtain the
Two dust；
6）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, second level filtering unit is discharged
Furnace gas introduce third level temperature control cooling unit, the furnace gas export temperature control of third level temperature control cooling unit is 110-120
DEG C, separate out part material cooling to be recycled and form the 3rd dust and collect in third level temperature control cooling unit；
7）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, third level temperature control cooling unit is discharged
And the furnace gas for carrying the 3rd dust is introduced into third level filtering unit and carries out dust separation and further collect to obtain the
Three dust；
The first dust that above-mentioned collection obtains is the dust of enrichment antimony, and the second dust is to be enriched with antimony, the dust of arsenic, the 3rd powder
Dirt is the dust of enrichment arsenic, and the gas that third level filtering unit is discharged is into subsequent recovery processing or discharges.
Above-mentioned lead anode slurry melting high-temperature furnace gas graded temperature-control dust cleaning technique employ three-level temperature control cooling unit and
Filtering unit, the antimony oxide of its first obtained dust is set to reach higher degree, three oxidations of the 3rd dust
Two arsenic can equally reach higher degree.
It should be noted that although the furnace gas export temperature control section of above-mentioned first order temperature control cooling unit and second level temperature control are cold
But the furnace gas export temperature control section of unit is overlapping on the point of " 400 DEG C ", but those skilled in the art are in the specific implementation
Obviously different temperature control sections can be taken, so as to which graded temperature-control could be realized.
The aspect that the present invention is described further with reference to the accompanying drawings and detailed description, the present invention is additional and excellent
Point will be set forth in part in the description, and partly will become apparent from the description below, or the practice by the present invention
Solve.
Brief description of the drawings
Fig. 1 is the technological process of lead anode slurry melting high-temperature furnace gas graded temperature-control dust cleaning process example 1 of the present invention
Figure.
Fig. 2 is the technological process of lead anode slurry melting high-temperature furnace gas graded temperature-control dust cleaning process example 2 of the present invention
Figure.
Fig. 3 is a kind of concrete structure schematic diagram of temperature control cooling unit in present invention process.
Fig. 4 is temperature control cooling unit another kind concrete structure schematic diagram in present invention process.
Embodiment
Fig. 1 show a kind of lead anode slurry melting high-temperature furnace gas graded temperature-control dust cleaning Processes and apparatus, such as the figure institute
Show, the equipment includes be linked in sequence first order temperature control cooling unit 211 after Industrial Stoves 100, first order gas filtration
Unit 221, second level temperature control cooling unit 212, second level filtering unit 222 and power set 230, power set 230
Driving Industrial Stoves 100 caused by furnace gas pass sequentially through first order temperature control cooling unit 211, first order filtering unit 221,
Second level temperature control cooling unit 212 and second level filtering unit 222.Using the lead anode slurry melting high temperature of the said equipment
The step of furnace gas graded temperature-control dust cleaning technique, includes：1）By the lead sun of 600-900 DEG C of temperature caused by Industrial Stoves 100
Pole mud melting furnace gas introduces the said equipment, and antimony oxide and arsenic trioxide are contained in the furnace gas before the equipment is introduced into
The two kinds of different gaseous state of de-sublimation temperature materials to be recycled；2）In the temperature conditionss for ensuring gaseous state material to be recycled and not separating out substantially
Under, the furnace gas is introduced into first order temperature control cooling unit 211, the furnace gas export temperature control of first order temperature control cooling unit 211
400-500 DEG C is made as, so that part material cooling to be recycled is separated out to form the first dust and collect and cooled down in first order temperature control
In unit 211；3）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, by first order temperature control cooling unit
211 discharge and carry the furnace gas of the first dust and are introduced into first order filtering unit 221 progress dust separation and further
Collection obtains the first dust；4）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, by first order gas mistake
Filter the furnace gas that unit 221 is discharged and introduce second level temperature control cooling unit 212, the furnace gas export of second level temperature control cooling unit 212
Temperature control is 110-120 DEG C, so that part material cooling to be recycled is separated out to form the second dust and collect and controlled in the second level
In warm cooling unit 212；5）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, second level temperature control is cooled down
Unit 212 discharge and carry the second dust furnace gas be introduced into second level filtering unit 222 carry out dust separation go forward side by side
One step collects to obtain the second dust.Hereafter, the gas that second level filtering unit 222 is discharged enters power set 230, then
From the outlet of power set 230 again through smoke stack emission.
Present invention applicant has carried out industry to above-mentioned lead anode slurry melting high-temperature furnace gas graded temperature-control dust cleaning technique
Experiment, Industrial Stoves 100 specifically employ reverberatory furnace in experiment, and the fluctuation range for reflecting heater outlet temperature is controlled in 600-900
DEG C, after testing, furnace gas dustiness caused by reverberatory furnace is 40-50g/m3, wherein mainly antimony, the 3-12% of the weight containing 65-75%
The arsenic of weight and the lead of 1-2% weight.Between described Industrial Stoves 100 and first order temperature control cooling unit 211, first order control
Between warm cooling unit 211 and first order filtering unit 221, first order filtering unit 221 and second level temperature control it is cold
But utilidor is passed through between unit 212, between second level temperature control cooling unit 212 and second level filtering unit 222
It is connected, while requires the outlet temperature of inlet temperature≤utilidor of each utilidor, each utilidor specifically uses chuck
Heat preserving mode（Certainly the insulation of the other modes such as electrical heating can also be used）, chuck is interior to be heated using high-temperature flue gas, so that it is guaranteed that stove
Gas is single in Industrial Stoves 100, first order temperature control cooling unit 211, first order filtering unit 221, the cooling of second level temperature control
The temperature for making gaseous state material to be recycled not separate out substantially is maintained at when being transmitted between member 212 and second level filtering unit 222
Under state, both prevented dust from separating out and blocking pipeline, while the phase transformation of material to be recycled is strictly also limited in each temperature control and cooled down
In unit 210, organic efficiency is improved.Simultaneously as the operating temperature of first order filtering unit 221 is higher, therefore first order gas
Body filter element 221 employs high temperature resistant cemented iron Lu porous material filter core as filter element, so as to ensure that filter element makes
With the life-span, the outlet dustiness of first order filtering unit 221 is controlled in 20mg/m3Below；Second level filtering unit
222 use cloth bag as filter element, while require that the outlet dustiness equally control of second level filtering unit 222 exists
20mg/m3Hereinafter, polluted with reducing air PM2.5.In addition, first order filtering unit 221 and second level gas filtration list
Member 222 equally employs Insulation, i.e., is mounted with insulation jacket on their shell, and with high-temperature flue gas heating and thermal insulation,
So that the furnace gas of first order filtering unit 221 and second level filtering unit 222 inlet temperature≤furnace gas export temperature,
So as to prevent that the material in furnace gas from undergoing phase transition precipitation solid particle in filter process and blocks filter element, extended filtering element
The service life of part.In addition, power set 230 specifically use blower fan.
A kind of temperature control cooling unit 210 of brand-new design is additionally used in above-mentioned experiment, using cold as its first order temperature control
But unit 211 and second level temperature control cooling unit 212.As shown in Figure 3,4, the warm cooling unit 210 include inlet channel 210b,
Grey cylinder 210a is received, the grey cylinder 210a bottoms of receipts are provided with ash exhauster, receive grey cylinder 210a tops arrangement and are provided between at least two groups
Wall cooler 210c, these partition coolers 210c pipe internal channel respectively constitute cooled air-flow road, pipe is outer take liquid cold or/
And air cooling, the air inlet on each partition cooler 210c cooled air-flow road are parallel on the inlet channel 210b and set respectively
There is valve 210d, the exhaust outlet on the air-flow road that is cooled passes through most with the partition cooler 210c at respective place pipe internal channel respectively
Stretched into from top to bottom after more 1 to 2 bending and receive grey cylinder 210a, the inlet channel 210b is provided with furnace gas input port 210e, receives
Grey cylinder 210a is provided with furnace gas delivery outlet 210f.As the general structure of the ash exhauster, such as Fig. 3,4, it is included positioned at receipts
Grey room is sunk in the taper of grey cylinder 210a bottoms, and taper sinks the bottom of grey room and is provided with ash discharging hole, ash discharging hole connection ash-valve 210g.The control
The warm unit of cooling unit 210 mainly has the following advantages that：Firstth, heat exchange, cooling medium are carried out using partition cooler 210c
With being not directly contacted between this cooling medium, other impurities will not be introduced into this cooling medium；Secondth, each partition cooler
The air inlet on 210c cooled air-flow road is parallel on the inlet channel 210b and is respectively equipped with valve 210d, passes through control
These valves 210d unlatching quantity, the heat exchange area of the unit of temperature control cooling unit 210 is can adjust, it is simple, rapid to realize outlet
The adjustment of temperature, and often realized and sublimated within the scope of certain temperature due to gaseous matter, ten are not required for temperature control
Divide accurately, therefore the temperature control is designed to meet furnace gas graded temperature-control dust cleaning technological requirement of the invention；3rd, separate out
Dust is not easily blocked partition cooler 210c pipe internal channel, and effectively sedimentation recovery can be realized in grey cylinder 210a is received.
In order to preferably adjust the outlet temperature of temperature control cooling unit 210, can select aperture can precision adjustment valve 210d, so
Just quantity and aperture can be opened by control valve 210d, improve the accuracy of temperature control.
Fig. 3 shows a kind of more specifically structure of above-mentioned temperature control cooling unit 210.As shown in the drawing, wherein each partition
Cooler 210c pipeline is one and extends to peak straight up from the valve 210d being connected on inlet channel 210b
Turn back afterwards and downwards and be vertically lowered to the structure received in grey cylinder 210a, therefore each partition cooler 210c cooled air-flow road
Exhaust outlet actually respectively with respective place partition cooler 210c pipe internal channel by 1 time bending after stretch from top to bottom
Enter to receive grey cylinder 210a, so, the furnace gas into cooled air-flow road is first transported from lower to upper in partition cooler 210c pipeline
Move and then moved from top to bottom after turning back again, the dust separated out therebetween can substantially be brought into grey cylinder 210a is received, both by furnace gas
It can effectively avoid blocking in partition cooler 210c pipe, simultaneously because partition cooler 210c pipeline turns back and increased
Heat exchange area.In Fig. 3 temperature control cooling unit 210, air cooling mode is have selected outside partition cooler 210c pipe, it specifically may be used
Determine heat exchange efficiency with factors such as the pipeline material according to partition cooler 210c, sizes and select free convection to cool down with this
Or force quenching.In addition, inlet channel 210b is set directly on the grey cylinder 210a of receipts in Fig. 3 temperature control cooling unit 210
Fang Bingyu is isolated between receiving grey cylinder 210a by a dividing plate, compact-sized reasonable.
Fig. 4 shows another more specifically structure of above-mentioned temperature control cooling unit 210.As shown in the drawing, it is therein enter
Gas passage 210b is positioned at the top for receiving grey cylinder 210a and is separated by certain altitude up and down, and partition cooler 210c is arranged on air inlet side by side
Between passage 210b and the grey cylinder 210a of receipts, partition cooler 210c pipeline is the straight tube being vertically arranged, and the upper end of the pipeline leads to
Valve 210d connection inlet channel 210b are crossed, lower end, which is stretched into, receives grey cylinder 210a.Each partition cooler 210c pipeline in the structure
It is the straight tube being vertically arranged, cooled gas moves and bring the dust of precipitation to receipts completely into from top to bottom in the straight tube
In grey cylinder 210a, so as to prevent dust plugging problem.But because partition cooler 210c pipeline is not bent, therefore change
Hot area is smaller, and at this moment one is it is contemplated that increasing partition cooler 210c duct length, second, partition cooler 210c pipe
The cold mode of liquid can be selected outside, such as is taken spray or pressed from both sides as shown in Figure 4 in partition cooler 210c pipeline peripheral hardware water cooling
210h is covered, water-cooling jacket 210h both ends are respectively equipped with water inlet 210i and delivery port 210j.
Lead anode slurry melting high-temperature furnace gas graded temperature-control dust cleaning technique shown in Fig. 1 can use Fig. 3 temperature control cold
But unit 210, Fig. 4 temperature control cooling unit 210 can also be used.Experiment above employs Fig. 3 temperature control cooling unit
210, last result of the test is：It is recovered to by first order temperature control cooling unit 211 and first order filtering unit 221
The first dust in be enriched with the antimony oxide of higher degree, and the weight percentage of arsenic is below 1% in the dust；It is logical
Cross the weight percent of antimony in the second dust that second level temperature control cooling unit 212 and second level filtering unit 222 are recovered to
Then below 20%, arsenic in furnace gas is substantially all to be enriched in the second dust content.
It is then another lead anode slurry melting high-temperature furnace gas graded temperature-control dust cleaning technique shown in Fig. 2, its equipment includes
Be linked in sequence first order temperature control cooling unit 211 after Industrial Stoves 100, first order filtering unit 221, the second level
Temperature control cooling unit 212, second level filtering unit 222, third level temperature control cooling unit 213, third level gas filtration list
Member 223 and power set 230, power set 230 drive furnace gas caused by Industrial Stoves 100 to pass sequentially through the cooling of first order temperature control
Unit 211, first order filtering unit 221, second level temperature control cooling unit 212, second level filtering unit 222,
Three-level temperature control cooling unit 213 and third level filtering unit 223.The step of technique, includes：1）By Industrial Stoves 100
The lead anode slurry melting furnace gas of caused 600-900 DEG C of temperature introduces a furnace gas graded temperature-control dust cleaning equipment 200, is drawing
Enter solidifying containing two kinds of antimony oxide and arsenic trioxide in the furnace gas before the furnace gas graded temperature-control dust cleaning equipment 200
The different gaseous state of magnificent temperature material to be recycled；2）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, by institute
State the first order temperature control cooling unit 211 that furnace gas is introduced into the equipment, the furnace gas export temperature of first order temperature control cooling unit 211
Control as 400-500 DEG C, separate out part material cooling to be recycled and form the first dust and collect single in the cooling of first order temperature control
In member 211；3）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, by first order temperature control cooling unit 211
The furnace gas discharged and carry the first dust is introduced into progress dust separation in first order filtering unit 221 and further collected
Obtain the first dust；4）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, by first order gas filtration list
The furnace gas of the discharge of member 221 introduces second level temperature control cooling unit 212, the furnace gas export temperature of second level temperature control cooling unit 212
Control as 300-380 DEG C, separate out part material cooling to be recycled and form the second dust and collect single in the cooling of second level temperature control
In member 212；5）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, by second level temperature control cooling unit 212
The furnace gas discharged and carry the second dust is introduced into progress dust separation in second level filtering unit 222 and further collected
Obtain the second dust；6）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, by second level gas filtration list
The furnace gas of the discharge of member 222 introduces third level temperature control cooling unit 213, the furnace gas export temperature of third level temperature control cooling unit 213
Control as 110-120 DEG C, separate out part material cooling to be recycled and form the 3rd dust and collect single in the cooling of third level temperature control
In member 213；7）In the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, by third level temperature control cooling unit 213
The furnace gas discharged and carry the 3rd dust is introduced into progress dust separation in third level filtering unit 223 and further collected
Obtain the 3rd dust.Hereafter, the gas that third level filtering unit 223 is discharged enters power set 230, is then filled from power
230 outlet is put again through smoke stack emission.
Above-mentioned second of lead anode slurry melting high-temperature furnace gas graded temperature-control dust cleaning technique has equally carried out commerical test,
Wherein Industrial Stoves 100 still use reverberatory furnace, and the fluctuation range for reflecting heater outlet temperature is controlled at 600-900 DEG C, through inspection
Survey, furnace gas dustiness caused by reverberatory furnace is 40-50g/m3, wherein the mainly antimony of the weight containing 65-75%, 3-12% weight
The lead of arsenic and 1-2% weight.Between described Industrial Stoves 100 and first order temperature control cooling unit 211, the first order temperature control cooling
Between unit 211 and first order filtering unit 221, first order filtering unit 221 and second level temperature control cooling unit
Between 212, between second level temperature control cooling unit 212 and second level filtering unit 222, second level filtering unit
Between 222 between third level temperature control cooling unit 213, third level temperature control cooling unit 213 and third level filtering unit
It is connected between 223 by utilidor, while requires the outlet temperature of inlet temperature≤utilidor of each utilidor, respectively
Utilidor specifically uses jacket heat-preservation mode, is heated in chuck using high-temperature flue gas.Meanwhile first order filtering unit
221st, second level filtering unit 222 employs high temperature resistant sintering ceramic porous material filter core as filter element, outlet
Dustiness is controlled in 20mg/m3Below；Third level filtering unit 223 is still using cloth bag as filter element, third level gas
The outlet dustiness of body filter element 223 is equally controlled in 20mg/m3Below.In addition, first order filtering unit 221,
Secondary gas filter element 222 and third level filtering unit 223 equally employ identical Insulation, so that the first order
The furnace gas of filtering unit 221 and second level filtering unit 222 inlet temperature≤furnace gas export temperature.The above-mentioned first order
Temperature control cooling unit 211, second level temperature control cooling unit 212 and third level temperature control cooling unit 213 are cold using Fig. 4 temperature control
But unit 210.Power set 230 are still blower fan.
The result of the test of second of lead anode slurry melting high-temperature furnace gas graded temperature-control dust cleaning technique is：Pass through the first order
The first dust that temperature control cooling unit 211 and first order filtering unit 221 are recovered to is enriched with three oxygen of higher degree
Change two antimony, the weight percentage of arsenic is below 1% in the dust；Pass through second level temperature control cooling unit 212 and second level gas
Both antimony oxide had been contained in the second dust that filter element 222 is recovered to or had contained arsenic trioxide, the weight percent of arsenic contains
Amount is below 10%；The 3rd dust being recovered to by third level temperature control cooling unit 213 and third level filtering unit 223
The arsenic trioxide of higher degree is enriched with, the weight percentage of antimony is below 1% in the dust.
With reference to the vapour pressure of arsenic trioxide and the corresponding relation of temperature（Such as table 1）And the vapour pressure of antimony oxide with
The corresponding relation of temperature（Such as table 2）, for the first lead anode slurry melting high-temperature furnace gas graded temperature-control dust cleaning work above
Skill, first order temperature control are cooled in 400-500 DEG C, are to be based at 450 DEG C or so, arsenic trioxide saturated vapor pressure is three oxidations
More than 70,000 times of two antimony, now antimony oxide more than 98% all separates out, and arsenic trioxide realizes arsenic antimony without precipitation
Separation.Second level temperature control cooling is reduced to 110-120 DEG C or so, and now arsenic trioxide more than 99.99% separates out, therefore realizes
The enriching and recovering of arsenic.And for second of lead anode slurry melting high-temperature furnace gas graded temperature-control dust cleaning technique above, in
Between plus one-level temperature control be cooled in 300-400 DEG C, before the antimony that does not cool down completely of the first order further cool down precipitation, obtain
The mixture of arsenic antimony, behind the third level cooling can be collected into purer arsenic trioxide.
Table 1：The relation of arsenic trioxide vapour pressure and temperature
| Temperature（℃） | 110 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 476 |
| Vapour pressure（KPa） | 0.000118 | 0.00322 | 0.09125 | 1.3646 | 12.7292 | 18.5955 | 39.2545 | 74.7310 | 100.96 |
Table 2：The relation of antimony oxide vapour pressure and temperature
| Temperature（℃） | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 839 |
| Vapour pressure（Pa） | 0.000177 | 0.005007 | 0.08593 | 0.9953 | 8.3975 | 287.309 | 4756.001 | 101720 |
Claims (6)
1. furnace gas graded temperature-control dust cleaning technique, its step include：
1) furnace gas caused by Industrial Stoves (100) is introduced into a furnace gas graded temperature-control dust cleaning equipment (200), introduces the stove
It is to be recycled containing the different gaseous state of at least two de-sublimation temperatures in the furnace gas before gas graded temperature-control dust cleaning equipment (200)
Material；
2) in the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, the furnace gas is introduced into the equipment first
Level temperature control cooling unit (211), separate out part material cooling to be recycled and form the first dust and collect cold in first order temperature control
But in unit (211)；
3) in the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, first order temperature control cooling unit (211) is arranged
The furnace gas for going out and carrying the first dust is introduced into progress dust separation in first order filtering unit (221) and further collected
Obtain the first dust；
4) in the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, first order filtering unit (221) is arranged
The furnace gas gone out introduces second level temperature control cooling unit (212), separates out part material cooling to be recycled and forms the second dust and receive
Collection is in second level temperature control cooling unit (212)；
5) in the case where ensuring temperature conditionss that gaseous state material to be recycled does not separate out substantially, second level temperature control cooling unit (212) is arranged
The furnace gas for going out and carrying the second dust is introduced into progress dust separation in second level filtering unit (222) and further collected
Obtain the second dust；
The first dust that above-mentioned collection obtains is to be enriched with the different gaseous state material to be recycled of at least two de-sublimation temperature
A kind of material to be recycled dust, the second dust is to be enriched with the different gaseous state thing to be recycled of at least two de-sublimation temperature
A kind of dust of material to be recycled in matter, the gas of second level filtering unit (222) discharge are handled into subsequent recovery
Or discharge；
The first order temperature control cooling unit (211) or/and second level temperature control cooling unit (212) include inlet channel
(210b), grey cylinder (210a) is received, grey cylinder (210a) bottom of receipts is provided with ash exhauster, receives the arrangement installation of grey cylinder (210a) top
There is at least two groups of partition coolers (210c), the pipe internal channel of these partition coolers (210c) to respectively constitute cooled air-flow
Road, pipe is outer to be taken liquid cold or/and be gas-cooled, the air inlet on the cooled air-flow road of each partition cooler (210c) be parallel to described in enter
On gas passage (210b) and it is respectively equipped with valve (210d), the partition of the exhaust outlet on the air-flow road that is cooled respectively with respective place is cold
But the pipe internal channel of device (210c) stretches into from top to bottom receives grey cylinder (210a), and the inlet channel (210b) inputs provided with furnace gas
Mouth (210e), receives grey cylinder (210a) and is provided with furnace gas delivery outlet (210f)；
The inlet channel (210b) is positioned at the top for receiving grey cylinder (210a) and is separated by certain altitude, partition cooler up and down
Between (210c) is arranged on inlet channel (210b) and receives grey cylinder (210a) side by side, the pipeline of partition cooler (210c) is vertical
The straight tube of setting, the upper end of the pipeline connect inlet channel (210b) by valve (210d), and lower end, which is stretched into, receives grey cylinder (210a)；
The pipeline of partition cooler (210c) is externally provided with water-cooling jacket (210h), the both ends of water-cooling jacket (210h) be respectively equipped with into
The mouth of a river (210i) and delivery port (210j).
2. furnace gas graded temperature-control dust cleaning technique as claimed in claim 1, it is characterised in that：The Industrial Stoves (100)
Caused furnace gas is the lead anode slurry melting furnace gas of 600-900 DEG C of temperature, and gaseous state material to be recycled therein is respectively three oxidations
Two antimony and arsenic trioxide；Furnace gas graded temperature-control dust cleaning equipment (200) is provided only with including first order temperature control cooling unit
(211) the two-stage temperature control cooling unit (210) and including second level temperature control cooling unit (212), first order temperature control cooling unit
(211) furnace gas export temperature control is 400-500 DEG C, the furnace gas export temperature control of second level temperature control cooling unit (212)
For 110-120 DEG C, collected and be enriched with by first order temperature control cooling unit (211) and first order filtering unit (221)
First dust of antimony, collected and be enriched with by second level temperature control cooling unit (212) and second level filtering unit (222)
Second dust of arsenic.
3. furnace gas graded temperature-control dust cleaning technique as claimed in claim 2, it is characterised in that：The first order gas filtration
At least first order filtering unit (221) is sintered using high temperature resistant in unit (221) and second level filtering unit (222)
Metal polyporous material filter core or high temperature resistant sinter ceramic porous material filter core as filter element.
4. furnace gas graded temperature-control dust cleaning technique as claimed in claim 1, it is characterised in that：The Industrial Stoves (100)
Between first order temperature control cooling unit (211) or/and the first order temperature control cooling unit (211) and first order gas filtration
Between unit (221) or/and between the first order filtering unit (221) and second level temperature control cooling unit (212) or/
It is connected between the second level temperature control cooling unit (212) and second level filtering unit (222) by utilidor, is protected
The outlet temperature of inlet temperature≤utilidor of warm pipeline.
5. furnace gas graded temperature-control dust cleaning technique as claimed in claim 1, it is characterised in that：The first order gas filtration
Furnace gas inlet temperature≤furnace gas export temperature of unit (221) or/and second level filtering unit (222).
6. the furnace gas graded temperature-control dust cleaning equipment for technique described in claim 1, it is characterised in that including：
First order temperature control cooling unit (211), the first order temperature control cooling unit (211) receive Industrial Stoves (100) and produced
The furnace gas of the raw gaseous states different containing at least two de-sublimation temperatures material to be recycled, and which part material to be recycled is cooled down
Separate out and form the first dust and collect in first order temperature control cooling unit (211)；
First order filtering unit (221), the first order filtering unit (221) receive first order temperature control cooling unit
(211) furnace gas for carrying the first dust of discharge, and by carrying out dust separation to the furnace gas further to collect to obtain institute
The first dust stated；
Second level temperature control cooling unit (212), the second level temperature control cooling unit (212) receive first order filtering unit
(221) furnace gas of discharge, and which part material cooling to be recycled is separated out and forms the second dust and collects in second level temperature control
In cooling unit (212)；
Second level filtering unit (222), the second level filtering unit (222) receive second level temperature control cooling unit
(212) furnace gas for carrying the second dust of discharge, and by carrying out dust separation to the furnace gas further to collect to obtain institute
The second dust stated；And
Power set (230), furnace gas caused by power set (230) the driving Industrial Stoves (100) pass sequentially through the first order
Temperature control cooling unit (211), first order filtering unit (221), second level temperature control cooling unit (212) and second level gas
Body filter element (222)；
Wherein, furnace gas Industrial Stoves (100), first order temperature control cooling unit (211), first order filtering unit (221),
Being maintained at when being transmitted between second level temperature control cooling unit (212) and second level filtering unit (222) makes gaseous state to be recycled
Under the state of temperature that material does not separate out substantially；First dust is to be enriched with the different gaseous state of at least two de-sublimation temperature to treat back
A kind of dust of material to be recycled in material is received, the second dust is to be enriched with the different gaseous state of at least two de-sublimation temperature
A kind of dust of material to be recycled in material to be recycled；
The first order temperature control cooling unit (211) or/and second level temperature control cooling unit (212) include inlet channel
(210b), grey cylinder (210a) is received, grey cylinder (210a) bottom of receipts is provided with ash exhauster, receives the arrangement installation of grey cylinder (210a) top
There is at least two groups of partition coolers (210c), the pipe internal channel of these partition coolers (210c) to respectively constitute cooled air-flow
Road, pipe is outer to be taken liquid cold or/and be gas-cooled, the air inlet on the cooled air-flow road of each partition cooler (210c) be parallel to described in enter
On gas passage (210b) and it is respectively equipped with valve (210d), the partition of the exhaust outlet on the air-flow road that is cooled respectively with respective place is cold
But the pipe internal channel of device (210c) stretches into from top to bottom receives grey cylinder (210a), and the inlet channel (210b) inputs provided with furnace gas
Mouth (210e), receives grey cylinder (210a) and is provided with furnace gas delivery outlet (210f)；
The inlet channel (210b) is positioned at the top for receiving grey cylinder (210a) and is separated by certain altitude, partition cooler up and down
Between (210c) is arranged on inlet channel (210b) and receives grey cylinder (210a) side by side, the pipeline of partition cooler (210c) is vertical
The straight tube of setting, the upper end of the pipeline connect inlet channel (210b) by valve (210d), and lower end, which is stretched into, receives grey cylinder (210a)；
The pipeline of partition cooler (210c) is externally provided with water-cooling jacket (210h), the both ends of water-cooling jacket (210h) be respectively equipped with into
The mouth of a river (210i) and delivery port (210j).
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| CN1490420A (en) * | 2002-10-17 | 2004-04-21 | �����λ���ҵ�����������ι�˾ | Vacuum arsenic extracting method and system without pollution |
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