CN110408783A - A kind of processing method of waste electron wiring board or electroplating sludge flue gas during smelting - Google Patents
A kind of processing method of waste electron wiring board or electroplating sludge flue gas during smelting Download PDFInfo
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- CN110408783A CN110408783A CN201910722093.1A CN201910722093A CN110408783A CN 110408783 A CN110408783 A CN 110408783A CN 201910722093 A CN201910722093 A CN 201910722093A CN 110408783 A CN110408783 A CN 110408783A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/64—Heavy metals or compounds thereof, e.g. mercury
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/76—Gas phase processes, e.g. by using aerosols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses the processing methods of a kind of waste electron wiring board or electroplating sludge flue gas during smelting.Electroplating sludge after waste electron wiring board or granulation is put into melting in oxygen-enriched furnace, obtains metal phase and flue dust；Gained flue dust is through six grades of expansion chamber subsiding and purifyings；Purified flue gas carries out radiating and cooling；Dedusting again after cooling, aqueous vapor separates after dedusting, then carries out plasma cracking oxidation reaction；Ozone is filled in flue gas after cracking and carries out oxidation reaction；Flue gas after oxidation imports refrigeration cooler and is cooled down；Flue gas after cooling be introduced into alkaline spray column neutralized, oxidation reaction, the salt of generation is discharged by tower bottom, emptied after the separation up to standard of the gas of generation.The present invention is a kind of method for non-pollution processing of waste electron wiring board or electroplating sludge flue gas during smelting efficiently, environmentally friendly, safe.
Description
One, technical field:
The present invention relates to the recovery processing technical fields of waste electron wiring board, electroplating sludge, more particularly, to one kind
The processing method of waste electron wiring board or electroplating sludge flue gas during smelting.
Two, background technique:
As " the final state object " after electroplating wastewater precipitation process, the huge sum of money such as Cu, Ni, Zn, Cr, Fe is contained in electroplating sludge
Belong to, ingredient is sufficiently complex, heavy metal is difficult to degrade, and has been put into National Hazard waste register.These in electroplating sludge
Heavy metal has the characteristics that unstable, easy accumulation, is easy to run off, if not dealing carefully with to it, holds very much under external environmental activity
It easily migrates, causes secondary pollution, endangers environment, and then influence human health.
The main methods of electroplating sludge include harmlessness disposing and resource utilization.From prevention and cure of pollution and resources circulation
From the point of view of utilization, carrying out synthetical recovery to heavy metal resources in electroplating sludge, there is important environment, resource and society to imitate
Benefit.Heavy metal recovery technology includes pyrogenic process and hydrometallurgic recovery, wherein pyrogenic process be limited at high cost, energy consumption is high, metal recovery rate and
The not high factor of purity.And wet processing relates to leach and separate two big processes for recycling metal in electroplating sludge, leaches
It is mainly soaked, and is separated mainly through chemical precipitation method, reduced separation method, strike etc. using acidleach and alkali.
With the rapid development of electronic technology with the update at full speed of electronic product, waste electrical equipment is set to become the mankind huge
Pollution rubbish promotes the industry of various countries' processing electronic waste to rise on the contrary since various countries are reluctant to receive such rubbish.But in crowd
In multiprocessing technique, water law (acid system) generates the largely waste water containing heavy metal ion and is difficult to administer, and crushes selection by winnowing, electrostatic separation
Generate flood tide dust pollution, isolate containing the nuisances toner object such as stupid, bromine, hydrocarbon because can not industrial application, tail can only be pressed
It is useless to stack.
In numerous treatment process, water law (acid system) generates the largely waste water containing heavy metal ion and is difficult to administer, and crushes
Selection by winnowing, electrostatic separation generate flood tide dust pollution, isolate containing the nuisances toner object such as stupid, bromine, hydrocarbon because can not be industrial
Using can only press that tail is useless to be stacked, the flue gas that smelting process generates removes after fume sedimentation chamber settles flue dust, then through cloth bag pulse room
Dirt, the flue gas after dedusting empties after spray column neutralizes the acid gas that process generates, but the pernicious gas generated is not located completely
Reason just empties.
Three, summary of the invention:
The technical problem to be solved by the present invention is smelting cigarette to waste electron wiring board and electroplating sludge according to the prior art
Shortcoming present in gas disposal technology, the present invention provide a kind of waste electron wiring board or plating efficiently, environmentally friendly, safe
The method for non-pollution processing of sludge flue gas during smelting.
To solve the above-mentioned problems, the technical solution adopted by the present invention is that:
The present invention provides the processing method of a kind of waste electron wiring board or electroplating sludge flue gas during smelting, the processing method
The following steps are included:
A, waste electron wiring board or the electroplating sludge after granulator is pelletized are put into side blowing smelting furnace first
Melting is carried out, metal phase (containing copper, tin, nickel, lead, iron and all noble metals in metal phase) and flue dust (cigarette are obtained after melting
Contain carbon dioxide, steam, hydrogen halides and sulphur, nitrogen oxides and the oxide formed containing zinc and part lead in dirt), metal phase
It recycles and re-uses into smelting system；Gained flue dust enters subsequent processing；
B, the flue dust formed after smelting step a successively imports level-one expansion chamber, second level expansion chamber, three-level expansion chamber, four
Grade expansion chamber, Pyatyi expansion chamber and six grades of expansion chambers carry out subsiding and purifying step by step, the flue gas after being purified；
C, flue gas obtained by step b subsiding and purifying is imported into radiator and carries out radiating and cooling, through radiator heat-dissipation flue-gas temperature
≤ 80 DEG C are reduced to from 500~800 DEG C；
D, flue gas obtained by step c enters cloth bag pulse dust collector progress dedusting again, and the flue gas after dedusting carries out two-stage water
Gas separation carries out the reaction of flue dust pyrolysis oxidization subsequently into plasma cracking system, reacts through pyrolysis oxidization, long chain is organic
Object generates water and inorganic gas oxide；
E, it is filled with ozone gas in the flue gas generated after step d cracking, carries out the inorganic gas oxide in flue gas
Oxidation reaction generates sour gas after ozone oxidation；
F, the step e flue gas for carrying sour gas is imported refrigeration cooler to cool down, is cooled to≤40 DEG C；
G, flue gas after cooling introduces alkaline spray column through air-introduced machine, and neutralization reaction is carried out in spray column, in and anti-
It should continue the further oxidation reaction of ozone imported with ozone machine in the process, be acidified nuisance exhaustive oxidation, after aoxidizing acidification
The salt of generation is discharged by alkali spray tower bottom, is emptied after the steam-water separation up to standard carried through spray column of the gas after spray.
According to the processing method of above-mentioned waste electron wiring board or electroplating sludge flue gas during smelting, through making described in step a
Electroplating sludge diameter after grain mechanism grain is 40~60 millimeters.
According to the processing method of above-mentioned waste electron wiring board or electroplating sludge flue gas during smelting, fusion process in step a
Middle control smelting temperature is 1250~1350 DEG C, and smelting time is 5~10min.
According to the processing method of above-mentioned waste electron wiring board or electroplating sludge flue gas during smelting, flue gas is carried out in step d
The equipment that the separation of two-stage aqueous vapor uses is centrifugal aqueous vapor seperator.
Positive beneficial effect of the invention:
The present invention provides a kind of electronic circuit boards efficiently, environmentally friendly, safe, the smelting body of electroplating sludge processing recycling
System, makes the high-temperature oxygen-enriched oxidation of organic matter in smelting, and remaining organic matter tail gas (including all stink substancess) passes through plasma cracking
System and ozone oxidation system, spray neutralize, reach cleaning discharge.The copper alloy obtained after high-temperature fusion is recycling.
Four, Detailed description of the invention:
The processing method process flow diagram of Fig. 1 waste electron wiring board of the present invention or electroplating sludge flue gas during smelting.
Five, specific embodiment:
The present invention is further explained with reference to embodiments, but is not intended to limit the range of technical solution of the present invention protection.
Embodiment 1:
The processing method of waste electron wiring board flue gas during smelting of the present invention, the detailed step of the processing method are as follows:
A, waste electron wiring board being put into side blowing smelting furnace first and carries out melting, smelting temperature is 1300 DEG C,
Smelting time is 8min；Metal phase (containing copper, tin, nickel, lead, iron and all noble metals in metal phase) and cigarette are obtained after melting
Dirt (contains carbon dioxide, steam, hydrogen halides and sulphur, nitrogen oxides and the oxide formed containing zinc and part lead) in flue dust,
Metal phase enters smelting system recycling and re-uses；Gained flue dust enters subsequent processing；
B, the flue dust formed after smelting step a successively imports level-one expansion chamber, second level expansion chamber, three-level expansion chamber, four
Grade expansion chamber, Pyatyi expansion chamber and six grades of expansion chambers carry out subsiding and purifying step by step, the flue gas after being purified；
C, flue gas obtained by step b subsiding and purifying is imported into radiator and carries out radiating and cooling, through radiator heat-dissipation flue-gas temperature
≤ 80 DEG C are reduced to from 500~800 DEG C；
D, flue gas obtained by step c enters cloth bag pulse dust collector progress dedusting again, and the flue gas after dedusting is using centrifugal
Water dispenser seperator carries out the separation of two-stage aqueous vapor, the reaction of flue dust pyrolysis oxidization is carried out subsequently into plasma cracking system, through cracking
Oxidation reaction, long chain organic matter generate water and inorganic gas oxide；
E, it is filled with ozone gas in the flue gas generated after step d cracking, carries out the inorganic gas oxide in flue gas
Oxidation reaction generates sour gas after ozone oxidation；
F, the step e flue gas for carrying sour gas is imported refrigeration cooler to cool down, is cooled to≤40 DEG C；
G, flue gas after cooling introduces alkaline spray column through air-introduced machine, and neutralization reaction is carried out in spray column, in and anti-
It should continue the further oxidation reaction of ozone imported with ozone machine in the process, be acidified nuisance exhaustive oxidation, after aoxidizing acidification
The salt of generation is discharged by alkali spray tower bottom, is emptied after the steam-water separation up to standard carried through spray column of the gas after spray.
Embodiment 2:
The processing method of electroplating sludge flue gas during smelting of the present invention, the detailed step of the processing method are as follows:
A, electroplating sludge is made through granulator to 50 millimeters or so of particle first, puts into side blowing smelting furnace and carries out
Melting, smelting temperature are 1300 DEG C, smelting time 5min；Obtained after melting metal phase (in metal phase containing copper, tin, nickel,
Lead, iron and all noble metals) and flue dust (containing carbon dioxide, steam, hydrogen halides and sulphur, nitrogen oxides and containing in flue dust
The oxide that zinc and part lead are formed), metal phase enters smelting system recycling and re-uses；Gained flue dust enters subsequent processing；
B, the flue dust formed after smelting step a successively imports level-one expansion chamber, second level expansion chamber, three-level expansion chamber, four
Grade expansion chamber, Pyatyi expansion chamber and six grades of expansion chambers carry out subsiding and purifying step by step, the flue gas after being purified；
C, flue gas obtained by step b subsiding and purifying is imported into radiator and carries out radiating and cooling, through radiator heat-dissipation flue-gas temperature
≤ 80 DEG C are reduced to from 500~800 DEG C；
D, flue gas obtained by step c enters cloth bag pulse dust collector progress dedusting again, and the flue gas after dedusting is using centrifugal
Water dispenser seperator carries out the separation of two-stage aqueous vapor, the reaction of flue dust pyrolysis oxidization is carried out subsequently into plasma cracking system, through cracking
Oxidation reaction, long chain organic matter generate water and inorganic gas oxide；
E, it is filled with ozone gas in the flue gas generated after step d cracking, carries out the inorganic gas oxide in flue gas
Oxidation reaction generates sour gas after ozone oxidation；
F, the step e flue gas for carrying sour gas is imported refrigeration cooler to cool down, is cooled to≤40 DEG C；
G, flue gas after cooling introduces alkaline spray column through air-introduced machine, and neutralization reaction is carried out in spray column, in and anti-
It should continue the further oxidation reaction of ozone imported with ozone machine in the process, be acidified nuisance exhaustive oxidation, after aoxidizing acidification
The salt of generation is discharged by alkali spray tower bottom, is emptied after the steam-water separation up to standard carried through spray column of the gas after spray.
Claims (4)
1. the processing method of a kind of waste electron wiring board or electroplating sludge flue gas during smelting, which is characterized in that the processing method
The following steps are included:
A, waste electron wiring board or the electroplating sludge after granulator is pelletized are put into side blowing smelting furnace and is carried out first
Melting, obtains metal phase and flue dust after melting, metal phase enters smelting system recycling and re-uses；Gained flue dust enters next work
Sequence；
B, the flue dust formed after smelting step a successively imports level-one expansion chamber, second level expansion chamber, three-level expansion chamber, level Four and sinks
It drops room, Pyatyi expansion chamber and six grades of expansion chambers and carries out subsiding and purifying step by step, the flue gas after being purified；
C, flue gas obtained by step b subsiding and purifying is imported into radiator and carries out radiating and cooling, through radiator heat-dissipation flue-gas temperature from 500
~800 DEG C are reduced to≤80 DEG C；
D, flue gas obtained by step c enters cloth bag pulse dust collector progress dedusting again, and the flue gas after dedusting carries out two-stage aqueous vapor point
From, the reaction of flue dust pyrolysis oxidization is carried out subsequently into plasma cracking system, is reacted through pyrolysis oxidization, the life of long chain organic matter
Cheng Shui and inorganic gas oxide；
E, it is filled with ozone gas in the flue gas generated after step d cracking, aoxidizes the inorganic gas oxide in flue gas
Reaction, generates sour gas after ozone oxidation；
F, the step e flue gas for carrying sour gas is imported refrigeration cooler to cool down, is cooled to
≤40℃；
G, flue gas after cooling introduces alkaline spray column through air-introduced machine, neutralization reaction is carried out in spray column, in neutralization reaction
Continue the further oxidation reaction of ozone imported with ozone machine in journey, be acidified nuisance exhaustive oxidation, is generated after oxidation acidification
Salt by alkali spray tower bottom discharge, emptied after the gas steam-water separation up to standard carried through spray column after spray.
2. the processing method of waste electron wiring board according to claim 1 or electroplating sludge flue gas during smelting, feature exist
In: the electroplating sludge diameter described in step a after granulator is pelletized is 40~60 millimeters.
3. the processing method of waste electron wiring board according to claim 1 or electroplating sludge flue gas during smelting, feature exist
In: controlling smelting temperature in step a in fusion process is 1250~1350 DEG C, and smelting time is 5~10min.
4. the processing method of waste electron wiring board according to claim 1 or electroplating sludge flue gas during smelting, feature exist
In: it is centrifugal aqueous vapor seperator that flue gas, which carries out the equipment that the separation of two-stage aqueous vapor uses, in step d.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910722093.1A CN110408783A (en) | 2019-08-06 | 2019-08-06 | A kind of processing method of waste electron wiring board or electroplating sludge flue gas during smelting |
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| CN201910722093.1A CN110408783A (en) | 2019-08-06 | 2019-08-06 | A kind of processing method of waste electron wiring board or electroplating sludge flue gas during smelting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114608336A (en) * | 2022-01-24 | 2022-06-10 | 池州西恩新材料科技有限公司 | Oxygen boosting side-blown converter smelts flue gas processing system that low-grade heavy metal is useless admittedly |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114608336A (en) * | 2022-01-24 | 2022-06-10 | 池州西恩新材料科技有限公司 | Oxygen boosting side-blown converter smelts flue gas processing system that low-grade heavy metal is useless admittedly |
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