CN108504871A - Precious metal recovery device and method in circuit board incineration tail gas - Google Patents
Precious metal recovery device and method in circuit board incineration tail gas Download PDFInfo
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- CN108504871A CN108504871A CN201810229376.8A CN201810229376A CN108504871A CN 108504871 A CN108504871 A CN 108504871A CN 201810229376 A CN201810229376 A CN 201810229376A CN 108504871 A CN108504871 A CN 108504871A
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- 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
- C22B7/02—Working-up flue dust
-
- 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
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
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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
- B01D53/48—Sulfur compounds
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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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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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
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Abstract
Precious metal recovery device in a kind of circuit board incineration tail gas, including the chimney being connected on circuit board incinerator, it is provided with air admission hole on upper chimney end outer wall, aerobic gas spray gun is inserted into air admission hole, the injection direction of oxygen lance is opposite or at a certain angle with tail gas stream outgoing direction, the outlet of chimney is connected to sack cleaner by pipeline, sack cleaner gas discharge end is connected to spray chamber by pipe fitting, spray chamber top is provided with spray tube, the spray tube is located at the indoor one end of spray and is equipped with nozzle, spray chamber bottom connects flocculation sediment by pipeline, spray chamber top connects desulfurizing tower by connection valve, smoke exhaust pipe at the top of desulfurizing tower is connected to gas composition analyzer, it is vented discharge after gas composition analyzer analysis is qualified；Micronic dust is captured using water spray, flocculation sediment is entered after wastewater collection, sediment carries out smelting recycling as leaching, and the tail gas after washing carries out last desulfurization process with lime water spray.
Description
Technical field
The present invention relates to Waste Disposal Technology fields, and in particular to noble metal recycling dress in a kind of circuit board incineration tail gas
It sets and method.
Background technology
With the fast development of electronics industry, the frequency that various electric equipment products update is accelerated year by year, produces therewith
Raw waste and old electric rubbish is also more and more.Waste and old printed circuit board is the important component of electronic component, and source is multiple
Miscellaneous, ingredient is also not quite similar.According to the difference of its substrate material, waste and old printed circuit board can be divided into glass fibre basal plate and paper substrate
Version two major classes.Glass fibre basal plate density is big, and quality weight, paper substrate version density is small, light weight.Contain in waste and old printed circuit board
There is the valuable metals such as copper, tin, gold very high recycling to be worth.The fire that valuable metal is recycled after burning is mostly used both at home and abroad
Method treatment process, incinerator have the type of furnaces such as blast furnace, bath smelting furnace.Both stoves enter stove material and gradually heat up from cold conditions,
Organic matter in printed wiring board cannot get sufficient combustion decomposition, production process generate the two of severe toxicity dislike because and carbon containing flue dust,
Therefore Dark smoke billows, and environmental pollution is quite serious.
Current processing method is mostly to use activated carbon adsorption, bag-type dust, water filtering precipitation etc., but cannot be fine
The harmful components filtered out in tail gas, such as bioxin, formaldehyde gas cause compared with havoc environment.
Invention content
Technical problem to be solved by the present invention lies in a kind of reasonable design is provided, using effect is good, reduces environmental pressure
Circuit board incineration tail gas in precious metal recovery device and method.
The technical problems to be solved by the invention are realized using following technical scheme：
Precious metal recovery device in a kind of circuit board incineration tail gas, including the chimney that is connected on circuit board incinerator,
It is provided with air admission hole on upper chimney end outer wall, aerobic gas spray gun, the injection direction and tail of oxygen lance are inserted into the air admission hole
Air-flow outgoing direction is opposite or at a certain angle, and the outlet of the chimney is connected to sack cleaner by pipeline, utilizes pocket type
Deduster is filtered recycling to tail gas and obtains leaching, and various metals and metal oxide are contained in leaching, and concentration is smelted
Recycling；The sack cleaner gas discharge end is connected to spray chamber by pipe fitting, is provided on the spray chamber top
Spray tube, the spray tube are located at the indoor one end of spray and are equipped with nozzle, and the spray chamber bottom is heavy by pipeline connection flocculation
It forms sediment, spray chamber top connects desulfurizing tower by connection valve, and the smoke exhaust pipe at the top of desulfurizing tower is connected to gas composition analyzer, through gas
It is vented discharge after analytical instrument analysis is qualified；Micronic dust is captured using water spray, it is heavy that flocculation is entered after wastewater collection
It forms sediment, sediment carries out smelting recycling as leaching, and the tail gas after washing carries out last desulfurization process with lime water spray.
Further, to improve the heat insulation effect of chimney, it is enclosed with thermal insulation material on chimney outer wall, delays tail in chimney
The temperature of gas declines.
Further, the oxygen lance along chimney circumferencial direction be arranged, uniformly into chimney spray into air or
Oxygen.
Further, the water that above-mentioned spray tube sprays is water at low temperature, and temperature can reduce rapidly exhaust temperature at 0-5 DEG C,
Conducive to the precipitation of dust, metal powder.
Method for recovering precious metals in a kind of circuit board incineration tail gas, steps are as follows：
S1. the flue gas that incinerator generates is passed through chimney, starts oxygen lance, with tail gas stream contrainjection hot-air or oxygen
Gas makes oxygen mix second-time burning with high-temperature tail gas；Er Evil are eliminated because of pernicious gases such as, formaldehyde；
S2. the tail gas after burning enters sack cleaner, is filtered to tail gas using sack cleaner, and recycling is filtered
Ash, contains various metals and metal oxide in leaching, concentration carries out smelting recycling；
S3. filtered tail gas in sack cleaner is introduced into spray chamber, micronic dust is captured using water spray, given up
Water enters flocculation sediment after collecting, and sediment carries out smelting recycling as leaching；
S4. the tail gas after spraying enters desulfurizing tower desulfurization process, finally enters gas composition analyzer, analyzes in tail gas
Ingredient directly empties after qualified, and unqualified return incinerator participates in burning processing again.
Further, the volume ratio of the hot-air and high-temperature tail gas that are sprayed into above-mentioned steps S1 is 0.8：1.2, the parameter
Design enables to the pernicious gas in tail gas fully to burn.
Above-mentioned thermal insulation material is made of the component of following parts by weight：100 parts of polyisoprene rubber, calcined kaolin
15 parts of powder, 2 parts of calcium activated, 4 parts of vulcanizing agent, 2 parts of polyester staple fibers, 5 parts of modified zeolite powder, polypropylene glycol diglycidyl ether 1.3
Part, 0.8 part of Rosa Damascana, 8 parts of nano silicon dioxide, 1.2 parts of bamboo powder；
The processing method of above-mentioned modified zeolite powder is as follows：
(1) zeolite powder of 90-110 mesh is roasted 2.5 hours at 280-350 DEG C, is waited for after naturally cool to room temperature taking-up
With；
(2) zeolite powder 50kg and silicone oil 0.5kg after cooling are weighed, is uniformly mixed, is warming up to 115-125 DEG C, heat preservation is ground
Mill 30 minutes；
(3) material after above-mentioned grinding is naturally cooled to 45-55 DEG C, 5-10 DEG C of magnetized water is then added under stiring
200kg, gained mixture are sent into spray dryer, and dry gained particle is made micro mist through micronizer and is boiled to get modified
Mountain flour；
The preparation process of above-mentioned thermal insulation material is as follows：
(1) by polyisoprene rubber, calcined kaolin powder, calcium activated, polyester staple fibers, modified zeolite powder, polypropylene glycol
Diglycidyl ether, nano silicon dioxide and bamboo powder pour into adding pressure type rubber kneading machine in order, and 480 seconds heel row of glue are smash in pressurization
Go out；
(2) sizing material being discharged is by opening rubber mixing machine, and vulcanizing agent and Rosa Damascana refining glue 60 minutes is added, waits for that sizing material is cold
But after the completion of, using rubber extruding equipment, rolling equipment, the anti-skidding antibacterial pad of semi-finished product is obtained after cut-to-length；(3) in vulcanizing mold
Have a small amount of silicone oil of upper nozzle, the anti-skidding antibacterial pad of semi-finished product be subjected to vulcanisation operation on vulcanizer, is sent into flash trimming mold after the completion,
It is punched out flash trimming operation after being aligned the cloudy hole of flash trimming mold, obtains finished product.
Above-mentioned zeolite powder can be good at being merged with rubber after silicone oil and magnetized water treatment, product
Elasticity, gumminess and toughness are further enhanced.
Calcium activated is inorganic active agent, and curingprocess rate can not only be accelerated by being added in sizing material, moreover it is possible to be improved the degree of cross linking, be made rubber
With good wearability, resistance to tearing and antibiotic property.
Calcined kaolin powder acts on the filler of rubber, can not only improve the physical property of rubber sheet gasket, but also can make
The cost of gasket is greatly lowered.
Vulcanizing agent can promote rubber molecular chain to be cross-linked to form space network, improve curingprocess rate, when shortening vulcanization
Between.
Prepared thermal insulation material have superior heat-proof quality, it is corrosion-resistant, elasticity it is good, can be for a long time at 185 DEG C
Used under operating mode, overcome fatigue at high temperature performance existing in the prior art it is low and can only at 150 DEG C can it is of short duration or interval make
With the problem of with it is insufficient.
Compared with prior art, the beneficial effects of the invention are as follows：Structure of the invention reasonable design is simple, the harmful waste residue of nothing,
Exhaust gas, discharge of wastewater, non-secondary pollution can fundamentally prevent two evils because of, the harm of formaldehyde and heavy metal to environment, recycling
Various metals and metal oxide prevent the wasting of resources, improve economic results in society.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is chimney sectional view of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In description of the invention, it should be noted that the orientation of the instructions such as term "vertical", "upper", "lower", "horizontal" or
Person's position relationship is orientation based on ... shown in the drawings or position relationship, is merely for convenience of describing this practicality and simplify to describe,
Rather than instruction either implies that signified device or element must have a particular orientation, with specific azimuth configuration and behaviour
Make, therefore is not considered as limiting the invention.In addition, " first ", " second ", " third ", " the 4th " are only used for description mesh
, and should not be understood as indicating or implying relative importance.
In description of the invention, it is also necessary to explanation, unless otherwise specific regulation and limitation, term " setting ", " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection can be mechanical connection, can also be electrical connection, can be directly connected to, and can also be to be connected by intermediary, can
To be the connection inside two elements.For the ordinary skill in the art, can understand as the case may be above-mentioned
The concrete meaning of term in the present invention.
Embodiment 1
Please refer to Fig.1-2, precious metal recovery device in a kind of circuit board incineration tail gas, including it is connected to circuit board incinerator
On chimney 1, be provided with air admission hole on 1 upper end outer wall of chimney, aerobic gas spray gun 2, oxygen lance 2 be inserted into the air admission hole
Injection direction it is opposite or at a certain angle with tail gas stream outgoing direction, the outlet of the chimney 1 is connected to pocket type by pipeline
Deduster 3 is filtered recycling to tail gas using sack cleaner 3 and obtains leaching, and various metals and metal oxygen are contained in leaching
Compound, concentration carry out smelting recycling；3 gas discharge end of the sack cleaner is connected to spray chamber 4 by pipe fitting, described
4 top of spray chamber is provided with spray tube 5, which is located at one end in spray chamber 4 and is equipped with nozzle 6, the spray chamber 4
Bottom connects flocculation sediment 7 by pipeline, and 4 top of spray chamber connects desulfurizing tower 8, the smoke evacuation at 8 top of desulfurizing tower by connection valve
Pipe is connected to gas composition analyzer 9, and discharge is vented after gas composition analyzer 9 analyzes qualification；Using water spray to micronic dust into
Row captures, and flocculation sediment 7 is entered after wastewater collection, sediment carries out smelting recycling as leaching, and the tail gas after washing is wanted
Last desulfurization process is carried out with lime water spray.To improve the heat insulation effect of chimney, thermal insulating material is enclosed on 1 outer wall of chimney
Material 10, delays the temperature of 1 inner exhaust gas of chimney to decline.The oxygen lance 2 is arranged along the circumferencial direction of chimney, uniformly to chimney
Air or oxygen are sprayed into 1.The water that above-mentioned spray tube spray 5 goes out is water at low temperature, and temperature can reduce rapidly tail gas at 0-5 DEG C
Temperature is conducive to the precipitation of dust, metal powder.
Method for recovering precious metals in a kind of circuit board incineration tail gas, steps are as follows：
S1. the flue gas that incinerator generates is passed through chimney, starts oxygen lance, with tail gas stream contrainjection hot-air or oxygen
Gas makes oxygen mix second-time burning with high-temperature tail gas；Er Evil are eliminated because of pernicious gases such as, formaldehyde；
S2. the tail gas after burning enters sack cleaner, is filtered to tail gas using sack cleaner, and recycling is filtered
Ash, contains various metals and metal oxide in leaching, concentration carries out smelting recycling；
S3. filtered tail gas in sack cleaner is introduced into spray chamber, micronic dust is captured using water spray, given up
Water enters flocculation sediment after collecting, and sediment carries out smelting recycling as leaching；
S4. the tail gas after spraying enters desulfurizing tower desulfurization process, finally enters gas composition analyzer, analyzes in tail gas
Ingredient directly empties after qualified, and unqualified return incinerator participates in burning processing again.
The volume ratio of the hot-air and high-temperature tail gas that are sprayed into above-mentioned steps S1 is 0.8：1.2, the design of the parameter can
So that the pernicious gas in tail gas fully burns.
Embodiment 2
Please refer to Fig.1-2, precious metal recovery device in a kind of circuit board incineration tail gas, including it is connected to circuit board incinerator
On chimney 1, be provided with air admission hole on 1 upper end outer wall of chimney, aerobic gas spray gun 2, oxygen lance 2 be inserted into the air admission hole
Injection direction it is opposite or at a certain angle with tail gas stream outgoing direction, the outlet of the chimney 1 is connected to pocket type by pipeline
Deduster 3 is filtered recycling to tail gas using sack cleaner 3 and obtains leaching, and various metals and metal oxygen are contained in leaching
Compound, concentration carry out smelting recycling；3 gas discharge end of the sack cleaner is connected to spray chamber 4 by pipe fitting, described
4 top of spray chamber is provided with spray tube 5, which is located at one end in spray chamber 4 and is equipped with nozzle 6, the spray chamber 4
Bottom connects flocculation sediment 7 by pipeline, and 4 top of spray chamber connects desulfurizing tower 8, the smoke evacuation at 8 top of desulfurizing tower by connection valve
Pipe is connected to gas composition analyzer 9, and discharge is vented after gas composition analyzer 9 analyzes qualification；Using water spray to micronic dust into
Row captures, and flocculation sediment 7 is entered after wastewater collection, sediment carries out smelting recycling as leaching, and the tail gas after washing is wanted
Last desulfurization process is carried out with lime water spray.To improve the heat insulation effect of chimney, thermal insulating material is enclosed on 1 outer wall of chimney
Material 10, delays the temperature of 1 inner exhaust gas of chimney to decline.The oxygen lance 2 is arranged along the circumferencial direction of chimney, uniformly to chimney
Air or oxygen are sprayed into 1.The water that above-mentioned spray tube spray 5 goes out is water at low temperature, and temperature can reduce rapidly tail gas at 0-5 DEG C
Temperature is conducive to the precipitation of dust, metal powder.
Method for recovering precious metals in a kind of circuit board incineration tail gas, steps are as follows：
S1. the flue gas that incinerator generates is passed through chimney 1, starts oxygen lance 2, with tail gas stream contrainjection hot-air or
Oxygen makes oxygen mix second-time burning with high-temperature tail gas；Er Evil are eliminated because of pernicious gases such as, formaldehyde；
S2. the tail gas after burning enters sack cleaner 3, is filtered to tail gas using sack cleaner 3, recycling obtains
Leaching, contains various metals and metal oxide in leaching, concentration carries out smelting recycling；
S3. filtered tail gas in sack cleaner 3 is introduced into spray chamber 4, micronic dust is captured using water spray,
Flocculation sediment 7 is entered after wastewater collection, sediment carries out smelting recycling as leaching；
S4. the tail gas after spraying enters 8 desulfurization process of desulfurizing tower, finally enters 9 instrument of gas composition analysis, analyzes in tail gas
Ingredient, directly emptied after qualified, unqualified returns incinerator participates in burning and handles again.
The volume ratio of the hot-air and high-temperature tail gas that are sprayed into above-mentioned steps S1 is 0.8：1.2, the design of the parameter can
So that the pernicious gas in tail gas fully burns.
Above-mentioned thermal insulation material is made of the component of following parts by weight：100 parts of polyisoprene rubber, calcined kaolin
15 parts of powder, 2 parts of calcium activated, 4 parts of vulcanizing agent, 2 parts of polyester staple fibers, 5 parts of modified zeolite powder, polypropylene glycol diglycidyl ether 1.3
Part, 0.8 part of Rosa Damascana, 8 parts of nano silicon dioxide, 1.2 parts of bamboo powder；
The processing method of above-mentioned modified zeolite powder is as follows：
(1) zeolite powder of 90-110 mesh is roasted 2.5 hours at 280-350 DEG C, is waited for after naturally cool to room temperature taking-up
With；
(2) zeolite powder 50kg and silicone oil 0.5kg after cooling are weighed, is uniformly mixed, is warming up to 115-125 DEG C, heat preservation is ground
Mill 30 minutes；
(3) material after above-mentioned grinding is naturally cooled to 45-55 DEG C, 5-10 DEG C of magnetized water is then added under stiring
200kg, gained mixture are sent into spray dryer, and dry gained particle is made micro mist through micronizer and is boiled to get modified
Mountain flour；
The preparation process of above-mentioned thermal insulation material is as follows：
(1) by polyisoprene rubber, calcined kaolin powder, calcium activated, polyester staple fibers, modified zeolite powder, polypropylene glycol
Diglycidyl ether, nano silicon dioxide and bamboo powder pour into adding pressure type rubber kneading machine in order, and 480 seconds heel row of glue are smash in pressurization
Go out；
(2) sizing material being discharged is by opening rubber mixing machine, and vulcanizing agent and Rosa Damascana refining glue 60 minutes is added, waits for that sizing material is cold
But after the completion of, using rubber extruding equipment, rolling equipment, the anti-skidding antibacterial pad of semi-finished product is obtained after cut-to-length；(3) in vulcanizing mold
Have a small amount of silicone oil of upper nozzle, the anti-skidding antibacterial pad of semi-finished product be subjected to vulcanisation operation on vulcanizer, is sent into flash trimming mold after the completion,
It is punched out flash trimming operation after being aligned the cloudy hole of flash trimming mold, obtains finished product.
Above-mentioned zeolite powder can be good at being merged with rubber after silicone oil and magnetized water treatment, product
Elasticity, gumminess and toughness are further enhanced.
Calcium activated is inorganic active agent, and curingprocess rate can not only be accelerated by being added in sizing material, moreover it is possible to be improved the degree of cross linking, be made rubber
With good wearability, resistance to tearing and antibiotic property.
Calcined kaolin powder acts on the filler of rubber, can not only improve the physical property of rubber sheet gasket, but also can make
The cost of gasket is greatly lowered.
Vulcanizing agent can promote rubber molecular chain to be cross-linked to form space network, improve curingprocess rate, when shortening vulcanization
Between.
Prepared thermal insulation material have superior heat-proof quality, it is corrosion-resistant, elasticity it is good, can be for a long time at 185 DEG C
Used under operating mode, overcome fatigue at high temperature performance existing in the prior art it is low and can only at 150 DEG C can it is of short duration or interval make
With the problem of with it is insufficient.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (6)
1. precious metal recovery device in a kind of circuit board incineration tail gas, it is characterised in that including being connected on circuit board incinerator
Chimney (1) is provided with air admission hole on the outer wall of chimney (1) upper end, and aerobic gas spray gun (2), oxygen spray are inserted into the air admission hole
The injection direction of rifle (2) is opposite or at a certain angle with tail gas stream outgoing direction, and the outlet of the chimney (1) is connect by pipeline
To sack cleaner (3), recycling is filtered to tail gas using sack cleaner (3) and obtains leaching, containing there are many gold in leaching
Belong to and metal oxide, concentration carry out smelting recycling；Sack cleaner (3) gas discharge end is connected to spray by pipe fitting
It drenches room (4), the spray chamber (4) top is provided with spray tube (5), which is located at the peace of one end in spray chamber (4)
Equipped with nozzle (6), spray chamber (4) bottom connects flocculation sediment (7) by pipeline, and spray chamber (4) top passes through connection valve
Desulfurizing tower (8) is connected, the smoke exhaust pipe at the top of desulfurizing tower (8) is connected to gas composition analyzer (9).
2. precious metal recovery device in circuit board incineration tail gas according to claim 1, it is characterised in that：The chimney
(1) thermal insulation material (10) is enclosed on outer wall, above-mentioned thermal insulation material is made of the component of following parts by weight：Polyisoprene
100 parts of rubber, 15 parts of calcined kaolin powder, 2 parts of calcium activated, 4 parts of vulcanizing agent, 2 parts of polyester staple fibers, 5 parts of modified zeolite powder, poly- third
1.3 parts of Hexanediol diglycidyl ether, 0.8 part of Rosa Damascana, 8 parts of nano silicon dioxide, 1.2 parts of bamboo powder.
3. precious metal recovery device in circuit board incineration tail gas according to claim 1, it is characterised in that：The oxygen spray
Rifle is arranged along the circumferencial direction of chimney, and oxygen is uniformly sprayed into chimney.
4. precious metal recovery device in circuit board incineration tail gas according to claim 1, it is characterised in that：Above-mentioned spray tube
The water of ejection is water at low temperature, and temperature is at 0-5 DEG C.
5. a kind of method recycling noble metal using any one of claim 1-4 described devices, it is characterised in that steps are as follows：
S1. the flue gas that incinerator generates is passed through chimney, starts oxygen lance, and tail gas stream contrainjection hot-air or oxygen,
Oxygen is set to mix second-time burning with high-temperature tail gas；
S2. the tail gas after burning enters sack cleaner, is filtered to tail gas using sack cleaner, and recycling obtains leaching,
Contain various metals and metal oxide in leaching, concentration carries out smelting recycling；
S3. filtered tail gas in sack cleaner is introduced into spray chamber, micronic dust is captured using water spray, waste water is received
Flocculation sediment is entered after collection, sediment carries out smelting recycling as leaching；
S4. the tail gas after spraying enters desulfurizing tower desulfurization process, finally enters gas composition analyzer, analyze in tail gas at
Point, it is directly emptied after qualified, unqualified return incinerator participates in burning processing again.
6. according to the method described in claim 5, it is characterized in that：The hot-air that is sprayed into above-mentioned steps S1 and high-temperature tail gas
Volume ratio is 0.8：1.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810229376.8A CN108504871A (en) | 2018-03-20 | 2018-03-20 | Precious metal recovery device and method in circuit board incineration tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810229376.8A CN108504871A (en) | 2018-03-20 | 2018-03-20 | Precious metal recovery device and method in circuit board incineration tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108504871A true CN108504871A (en) | 2018-09-07 |
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| CN201810229376.8A Pending CN108504871A (en) | 2018-03-20 | 2018-03-20 | Precious metal recovery device and method in circuit board incineration tail gas |
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Cited By (2)
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| CN110125090A (en) * | 2019-04-02 | 2019-08-16 | 贵州省六盘水双元铝业有限责任公司 | A kind of aluminium ash recycling treatment collection device and method |
| CN115445397A (en) * | 2022-09-29 | 2022-12-09 | 湖南省金翼有色金属综合回收有限公司 | Metal recovery waste gas filtering and purifying equipment |
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