The content of the invention
The present invention is in view of the shortcomings of the prior art, it is proposed that a kind of spiral regenerative gas electronic waste pyrolysis system.Should
System has pyrolysis efficiency high, continuous feeding and discharging and electronic waste is divided into organic matter and metal part processes recovery respectively,
The advantages of thermal source, pressure, atmosphere in device are stablized and energy-saving effect is notable.
In order to solve the above technical problems, the technical solution adopted by the present invention is:
The present invention proposes a kind of spiral regenerative gas electronic waste pyrolysis system.Embodiments in accordance with the present invention, the system
Including:Raw material processing system, metal recovery system and electronic waste pyrolytic reaction system, wherein, the raw material processing system bag
Breaker and sorting unit are included, for being metal part and organic matter fractions by electronic waste sorting;The metal recovery system
System includes acidleach pond and electrolytic cell, and the metal part for sorting to be obtained is sent into the acidleach pond, is added thereto to strong acid
Solution, after metal is completely dissolved, the remaining flue gas produced through the electronic waste pyrolytic reaction system without metal part
After drying, mix with described organic matter fractions, pyrolytic reaction is carried out into the electronic waste pyrolytic reaction system, metal is molten
The strong acid solution rich in metal ion obtained after solution carries out cell reaction in sending into the electrolytic cell, reclaims metallic copper;It is described
Electronic waste pyrolytic reaction system includes:Electronic waste pyrolysis reactor, regenerative gas heating system and cooling separation,
Wherein, the electronic waste pyrolysis reactor includes:Material pyrolization modules and reactor shell, the material pyrolization modules across
The both sides of the reactor shell, and two ends of the material pyrolization modules are exposed in the outer of the reactor shell
Portion, the material pyrolization modules include shaped spiral housing and material propulsion spiral, wherein, the shaped spiral housing is from the reactor enclosure
Body side extends through the opposite side of the reactor shell, two ends of the shaped spiral housing along the reactor enclosure intracoelomic cavity
Hold the exposed outside in the reactor shell so that form confined air between the reactor shell and the shaped spiral housing
Between, the confined space constitutes the reactor shell exhaust gases passes of the regenerative gas heating system;The regenerative gas
Heating system includes:For produce heat smoke heat accumulating burner and for convey heat smoke reactor shell flue gas lead to
Road, also including the flue spiral for changing flue gas flow direction, the heat accumulating burner is logical with the reactor shell flue gas
Road is connected, and the flue spiral is installed in the exhaust gases passes between the reactor shell and the shaped spiral housing,
It arranges along the shaped spiral housing length direction, and with the reactor shell equal length;The cooling separation includes:Between
Connect heat exchanger and the cooling tower for high-temperature gas product to be obtained pyrolysis gas and tar through cooling;Wherein, the indirect heat exchange
The entrance of device is connected with oil gas vent.
Inventor has found that the system according to embodiments of the present invention is capable of achieving material of being back to back, and material is in pyrolytic reaction
It is tiled in device, is contacted with shaped spiral housing fully, high-temperature spiral housing is heated by radiation and heat conduction two ways to material, because
This material fully can be quickly pyrolyzed, and material is pushed into spiral in pyrolytic process and gradually pushes ahead, and realizes side
The function of pyrolysis side propulsion;The present invention, by heavy metal removing, is fired using the method for raw material front end pretreatment using spiral heat accumulating type
Gas heating system as pyrolysis reactor thermal source, its fuel be high heating value combustion gas(Natural gas, liquefied petroleum gas etc.), due to adopting
With heat storage type combustion mode, combustion air is preheating to high temperature by regenerator, it is achieved thereby that efficient stable burns.Exhaust gases passes
Flue spiral is inside installed so that flue gas spiral rotating flows, flow field is more uniform, shaped spiral housing is real by heating evenly
Show material of being back to back, material by continuous quick fully pyrolysis and the function such as energy-efficient, and utilize Feedstock treating
System and metal recovery system, it is to avoid the severe contamination that heavy metal is caused, environmental protection.
Embodiments in accordance with the present invention, it is exposed to be provided with material on the shaped spiral housing of the reactor enclosure external body
Import, oil gas vent, slag charge outlet, and the material inlet are located at the shaped spiral housing upper right quarter, the oil gas vent position
In the shaped spiral housing upper left quarter, the slag charge outlet is located at the shaped spiral housing lower left quarter;The material propulsion spiral is located at
Inside the shaped spiral housing, and material propulsion spiral includes helical axis and helical blade, and the helical blade is fixed on
On the helical axis and it is arranged to be rotated coaxially with the helical axis, the helical axis stretches out in the material inlet side
The shaped spiral housing, the length of the helical blade is identical with the shaped spiral housing.
Embodiments in accordance with the present invention, the heat accumulating burner include air line, burning line, flue gas pipeline,
Reversal valve, regenerator and combustion chamber, the air line and the flue gas pipeline are connected with the reversal valve respectively, the commutation
Valve is connected with the regenerator, and the regenerator is connected with the combustion chamber.
Embodiments in accordance with the present invention, the heat accumulating burner is changed including 2 combustion chambers, 2 regenerator and 2
To valve, the combustion chamber, regenerator, reversal valve are respectively arranged in the both sides of the reactor shell, described in normal work
The both sides of heat storage type combustion can alternately burn-smoke discharging.
Embodiments in accordance with the present invention, the shaped spiral housing is heat-resisting steel sheel, and thickness is 5-8mm, in the electrolytic cell
Anode material is graphite, and cathode material is titanium plate, stainless steel plate, copper coin and proof gold plate, and the voltage range of the electrolytic cell is 0.1-
3V, current density is 1-5A/dm2, temperature is 20-80 DEG C in electrolytic cell, the cigarette that the electronic waste pyrolytic reaction system is produced
Temperature degree is 90-140 DEG C, and the strong acid solution is the concentrated sulfuric acid or chloroazotic acid.
Embodiments in accordance with the present invention, the outer wrap of the reactor shell has insulation material, and the insulation material is
Heat-preservation cotton, and heat-preservation cotton external application galvanized iron sheet parcel.
Embodiments in accordance with the present invention, the flue spiral is located in the exhaust gases passes, for changing flue gas flow direction, is allowed
Flue gas flows along the flue spiral rotating so that flue gas can more uniformly heat the shaped spiral housing.
Embodiments in accordance with the present invention, combustibility and reproducibility of the pyrolysis gas rich in methane, hydrogen and carbon monoxide
Gas, one part is used for the heating system raw material combustion gas, and heating repeats itself is utilized, and another part can be used as also Primordial Qi.
In another aspect of the present invention, electronic waste is carried out using foregoing system the invention provides one kind
The method of pyrolysis.Embodiments in accordance with the present invention, the method is comprised the following steps:First:Feedstock treating:Electronic waste raw material enters
Enter the breaker to be crushed, then sieved by sorting unit, obtain metal and organic matter;Second:Metal recovery:
By in metal part feeding acidleach pond, after metal is completely dissolved, it is remaining without metal part through flue gas drying after, it is and described
Organic matter fractions mix, and pyrolytic reaction is carried out into reaction system, and the strong acid rich in metal ion obtained after dissolving metal is molten
Cell reaction is carried out in liquid feeding electrolytic cell, metallic copper is reclaimed;3rd:Regenerative gas heating system is opened, its step is as follows:
A sides air line is opened, A sides burning line is then turned on, starting ignition rifle lights the mixed gas of air and combustion gas, gaseous mixture
Body produces high-temperature flue gas, the exhaust gases passes that high-temperature flue gas are entered into reactor enclosure body, in cigarette after burning in A side combusion chambers
High-temperature flue gas flow and are heated to the shaped spiral housing along flue spiral rotating in gas passage, then into B sides exhaust opening, most
Flue gas is discharged into external environment by B sides regenerator, B sides reversal valve and flue gas pipeline afterwards, after A sides burning certain hour,
Both sides reversal valve commutation, starts the burning of B sides, and now A sides are discharged fume, both sides alternate combustion-smoke discharging;4th, material pyrolysis
Process:After combustion system stabilization, shaped spiral housing is heated to uniform temperature, can be put into material in material inlet, and the material enters
Enter to the back forward movement side of propulsion spiral and be pyrolyzed, finished until moving to slag charge outlet and being pyrolyzed, be pyrolyzed the gas for producing
Body is discharged from oil gas vent, and remaining pyrolysis slag charge is discharged from slag charge outlet, and the high-temperature gas is through the refrigerated separation system
After system, pyrolysis gas and tar are obtained, the pyrolysis gas are rich in methane, hydrogen, the combustibility of carbon monoxide and reducibility gas, one
It is allocated as being heating system raw material combustion gas, heats itself, another part can be used as also Primordial Qi.
Embodiments in accordance with the present invention, in the step 3, the A sides are the left side of the reactor shell, the B sides
It is the right side of the reactor shell;In the step 4, the shaped spiral housing is heated to 600-700 DEG C.
The present invention at least has the advantages that:
Using the spiral heat accumulating type electronics refuse pyrolysis system, material of being back to back, material quilt in pyrolysis reactor are capable of achieving
Tiling, is contacted fully with shaped spiral housing, and high-temperature spiral housing is heated by radiation and heat conduction two ways to material, therefore material
Fully can be quickly pyrolyzed, and material is pushed into spiral in pyrolytic process and gradually pushes ahead, and realizes in pyrolysis
The function of propulsion;The present invention, by heavy metal removing, is heated using the method for raw material front end pretreatment using spiral regenerative gas
System as pyrolysis reactor thermal source, its fuel be high heating value combustion gas(Natural gas, liquefied petroleum gas etc.), as a result of storage
Hot type combustion system, combustion air is preheating to high temperature by regenerator, it is achieved thereby that efficient stable burns.Installed in exhaust gases passes
There is flue spiral so that flue gas spiral rotating flows, flow field is more uniform, and shaped spiral housing is by heating evenly, the company of realizing
Continuous turnover material, material by continuous quick fully pyrolysis and the function such as energy-efficient, and using raw material processing system and
Metal recovery system, it is to avoid the severe contamination that heavy metal is caused, environmental protection.
Specific embodiment
In order that those skilled in the art more fully understand technical scheme, with reference to specific embodiment to this
Invention is described in further detail.The embodiments described below is exemplary, is only used for explaining the present invention, without being understood that
It is limitation of the present invention.
The present invention proposes a kind of spiral regenerative gas electronic waste pyrolysis system.Embodiments in accordance with the present invention, Fig. 1
It is raw material processing system and the metal recovery system of spiral regenerative gas electronic waste pyrolysis system according to embodiments of the present invention
System schematic diagram, Fig. 3 is the pyrolytic reaction system of spiral regenerative gas electronic waste pyrolysis system according to embodiments of the present invention
Schematic diagram, shown in reference picture 1 and Fig. 3, the system includes:The pyrolysis of raw material processing system, metal recovery system and electronic waste is anti-
System is answered, wherein, the raw material processing system includes breaker and sorting unit, for being metal portion by electronic waste sorting
Divide and organic matter fractions;The metal recovery system includes acidleach pond and electrolytic cell;The electronic waste pyrolytic reaction system bag
Include:Electronic waste pyrolysis reactor, regenerative gas heating system 20 and cooling separation, wherein, Fig. 2 is according to the present invention
The pyrolysis reactor structural representation of the spiral regenerative gas electronic waste pyrolysis system of embodiment, it is described shown in reference picture 2
Electronic waste pyrolysis reactor includes:Material pyrolization modules and reactor shell 15, the material pyrolization modules are across described anti-
Answer the both sides of device housing, and the material pyrolization modules the exposed outside in the reactor shell in two ends;It is described
Regenerative gas heating system includes:Heat accumulating burner and reactor for conveying heat smoke for producing heat smoke
Housing exhaust gases passes 16, also including the flue spiral 17 for changing flue gas flow direction, the heat accumulating burner is anti-with described
Device housing exhaust gases passes are answered to be connected, the flue spiral is installed on the institute between the reactor shell and the shaped spiral housing
State in exhaust gases passes, it is arranged along the shaped spiral housing length direction, and with the reactor shell equal length;The cooling point
Include from system:Indirect heat exchanger 18 and the cooling tower 19 for high-temperature gas product to be obtained pyrolysis gas and tar through cooling;
Wherein, the entrance of the indirect heat exchanger is connected with oil gas vent, the entrance phase of the outlet of indirect heat exchanger and the cooling tower
Even.
Inventor has found that the system according to embodiments of the present invention is capable of achieving material of being back to back, and material is in pyrolytic reaction
It is tiled in device, is contacted with shaped spiral housing fully, high-temperature spiral housing is heated by radiation and heat conduction two ways to material, because
This material fully can be quickly pyrolyzed, and material is pushed into spiral in pyrolytic process and gradually pushes ahead, and realizes side
The function of pyrolysis side propulsion;The present invention, by heavy metal removing, is fired using the method for raw material front end pretreatment using spiral heat accumulating type
Gas heating system as pyrolysis reactor thermal source, its fuel be high heating value combustion gas(Natural gas, liquefied petroleum gas etc.), due to adopting
With heat storage type combustion mode, combustion air is preheating to high temperature by regenerator, it is achieved thereby that efficient stable burns.Exhaust gases passes
Flue spiral is inside installed so that flue gas spiral rotating flows, flow field is more uniform, shaped spiral housing is real by heating evenly
Show material of being back to back, material by continuous quick fully pyrolysis and the function such as energy-efficient, and utilize Feedstock treating
System and metal recovery system, it is to avoid the severe contamination that heavy metal is caused, environmental protection.
Embodiments in accordance with the present invention, shown referring to Figures 1 and 2, the metal recovery system, for will sort what is obtained
Metal part is sent into the acidleach pond, is added thereto to strong acid solution, remaining without metal portion after metal is completely dissolved
After the flue gas drying that electronic waste pyrolytic reaction system described in lease making is produced, mix with the foregoing organic matter fractions for obtaining, enter
The electronic waste pyrolysis reactor carries out pyrolytic reaction, the feeding of the strong acid solution rich in metal ion obtained after dissolving metal
Cell reaction is carried out in the electrolytic cell, metallic copper is reclaimed;The electronic waste pyrolysis reactor be arranged in reactor shell with
Inside the confined space that shaped spiral housing 14 is formed, and installation placed in the middle, the regenerative gas heating system along its length
It is arranged in the outside of the reactor shell;The material pyrolization modules include shaped spiral housing and material propulsion spiral, wherein, institute
State shaped spiral housing and extend through the another of the reactor shell along the reactor enclosure intracoelomic cavity from the reactor shell side
Side, the exposed outside in the reactor shell in two ends of the shaped spiral housing so that the reactor shell and institute
State and formed between shaped spiral housing confined space, the confined space constitutes the reactor shell of the regenerative gas heating system
Exhaust gases passes, the high-temperature flue gas for producing that burn enter exhaust gases passes, its internal shaped spiral housing are then transferred heat to, to thing
Material is pyrolyzed, and the outer wrap of the reactor shell has insulation material, the radiation loss for reducing wall;The pyrolysis
Rich in flammable and reducibility gas, one part is used for the heating system raw material combustion gas to gas, and heating repeats itself is utilized, separately
A part can be used as also Primordial Qi.
Embodiments in accordance with the present invention, the electrolytic cell anode material is graphite, and cathode material is titanium plate, stainless steel
Plate, copper coin and proof gold plate, the voltage range of the electrolytic cell is 0.1-3V, and current density is 1-5A/dm2, temperature is in electrolytic cell
20-80 DEG C, the strong acid solution is the concentrated sulfuric acid or chloroazotic acid.
The anode material of the electrolytic cell 1 is graphite, and cathode material is copper coin.The voltage range of the electrolytic cell is 0.1-
3V, current density is 3A/dm2, and temperature is 35 DEG C in electrolytic cell.More pure copper, product copper can be reclaimed in electrolytic cell 1
Purity close to 100%, the rate of recovery about 98% of the metallic copper obtained by recovery.
The anode material of the electrolytic cell 2 is graphite, and cathode material is proof gold plate.The voltage range of the electrolytic cell is 0.1-
3V, current density is 8A/dm2, and temperature is 70 DEG C in electrolytic cell.More pure gold, product gold can be reclaimed in electrolytic cell 1
Purity close to 100%, the rate of recovery about 98% of the noble metal gold obtained by recovery.
Embodiments in accordance with the present invention, the strong acid solution is chloroazotic acid(V concentrated hydrochloric acids:V concentrated nitric acid=3:1), sulfuric acid, hydrochloric acid,
The mixture of the strong acid such as nitric acid, hydrogen peroxide or Strong oxdiative solution or both, 0.5 ~ 2mol/L of solution concentration.To described rich in gold
Belong to addition alkali solid material in the strong acid solution of ion, the pH value of solution is adjusted to neutral or faintly acid, to mitigate to rear
Continuous workshop section equipment, the corrosiveness of pipeline.
Embodiments in accordance with the present invention, shown in reference picture 3, the indirect heat exchanger and oil gas vent, indirect heat exchanger with
The specific connected mode of the entrance of the cooling tower is unrestricted, can be welding, rivets, engages or structure-integrated, according to
Some embodiments of the present invention, it is preferred that the present invention is welding or structure-integrated.Some embodiments of the invention, institute
The entrance for stating indirect heat exchanger is connected with oil gas vent, and the outlet of indirect heat exchanger is connected with the entrance of the cooling tower, works as heat
Vent one's spleen from oil gas vent discharge, into the indirect heat exchanger, high-temperature gas is carried out at once cooling by recirculated water
Reason, subsequently into cooling tower, reducing temperature twice cooling is carried out by cooling water, and the gas after cooling is gone out by the pyrolysis gas of cooling tower
Mouth discharge.
Embodiments in accordance with the present invention, the specific species of the flue spiral is unrestricted, in some implementations of the invention
In example, shown in reference picture 3, the present invention is preferably deflection plate 17, for changing flue gas flow direction so that flue gas is along flue spiral rotating
Flowing so that the flow of flue gas in the whole exhaust gases passes is more uniform, and the shaped spiral housing can be heated properly.
Embodiments in accordance with the present invention, the flue-gas temperature that the electronic waste pyrolytic reaction system is produced is 90-140 DEG C;
The specific material of the shaped spiral housing is unrestricted, as long as being resistant to the material of more than 1000 DEG C of high temperature, the present invention
Using high-temperature refractory steel.
Embodiments in accordance with the present invention, the specific species of the flammable and reducibility gas is unrestricted, it is preferred that this
Invent is methane, hydrogen and carbon monoxide.
Embodiments in accordance with the present invention, as shown in Fig. 2 exposed on the shaped spiral housing of the reactor enclosure external body
Material inlet 11, oil gas vent 13, slag charge outlet 12 are provided with, and the material inlet is located at the shaped spiral housing upper right
Portion, the oil gas vent is located at the shaped spiral housing upper left quarter, and the slag charge outlet is located at the shaped spiral housing lower left quarter.
After etc. combustion system stabilization, the shaped spiral housing is heated to uniform temperature, now just can be in the material inlet
Material is put into, after material enters into the material propulsion spiral, is pyrolyzed when moving forward, until move to the slag charge going out
Mouth is pyrolyzed and finishes, and is pyrolyzed the gas for producing by from oil gas vent discharge, and remaining pyrolysis slag charge is exported from the slag charge
Discharge, after the high-temperature gas is through the cooling separation, obtain pyrolysis gas and tar, the pyrolysis gas rich in methane, hydrogen,
The combustibility such as carbon monoxide and reducibility gas, a part heat itself as heating system raw material combustion gas, and another part can use
Make also Primordial Qi.
Embodiments in accordance with the present invention, shown in reference picture 2, the material propulsion spiral is located inside the shaped spiral housing,
And the material propulsion spiral includes helical axis and helical blade, and the helical blade is fixed on the helical axis and is set
Being set to can rotate coaxially with the helical axis, and the helical axis stretches out the shaped spiral housing in the material inlet side, described
The length of helical blade is identical with the shaped spiral housing, described to advance spiral in the case where outside motor belt motor is dynamic with certain rotational speed,
Material is entered into after the reactor, is gradually pyrolyzed with the rising of temperature, while be advanced to, until before outlet
It is pyrolyzed and finishes, be pyrolyzed the pyrolysis gas for producing and be discharged from the oil gas vent, the slag charge after pyrolysis is exported from the slag charge
Discharge.Realize while pyrolysis while advance, the function that be back to back material and material are continuously rapidly and efficiently pyrolyzed.
Embodiments in accordance with the present invention, shown in reference picture 3, the heat accumulating burner includes air line 24, combustion gas
Pipeline 23, flue gas pipeline 25, reversal valve, regenerator and combustion chamber, the air line and the flue gas pipeline respectively with it is described
Reversal valve is connected, and the reversal valve is connected with the regenerator, and the regenerator is connected with the combustion chamber.
Embodiments in accordance with the present invention, the specific species of the air line is unrestricted, as long as can be provided for fuel
Combustion air, air, first by the reversal valve, is absorbed heat by the air line then into the regenerator,
High temperature is heated to the checker port, the combustion chamber is entered back into and is burnt with combustion gas mixing.
Embodiments in accordance with the present invention, the specific species of the burning line is unrestricted, as long as combustion reaction can be
Combustion gas is provided, due to using high heating value combustion gas, it is only necessary to which air single regenerative can stabilization burning.
Embodiments in accordance with the present invention, the specific material of flue gas pipeline and species are unrestricted, as long as can be by flue gas
The reactor is discharged, flue gas pipeline of the present invention is flue gas exhausting pipe line, and combustion product flue gas passes through the pipe
The externally discharged environment space of line.
Embodiments in accordance with the present invention, the reversal valve is used for air-flue gas commutation, when side is in fired state,
Regenerator is connected by the reversal valve with the air line, and then provides high temperature combustion air to burning;When side is in
During smoke evacuation state, the reversal valve commutation, now the regenerator is just connected by the reversal valve with the flue gas pipeline, cigarette
Gas just arranges external environment space.
Embodiments in accordance with the present invention, the regenerator is the medium of air-flue gas heat exchange, when side is in fired state
When, air enters the regenerator from the regenerator bottom, and the deflection plate is gradually cooled as it passes through the cooler;When side is in smoke evacuation state
When, flue gas enters the regenerator from the regenerator top, and the deflection plate is gradually heated by the sonochemical activity.
Embodiments in accordance with the present invention, the combustion chamber is both the combustion space of combustion gas, is again the outlet of flue gas, as
During for combustion space, first in the burning Indoor Combustion, the high-temperature flue gas of generation enter back into the reactor for combustion gas and air
Enclosure interior, burning is carried out in the combustion chamber, it is to avoid thermal-flame directly burns the shaped spiral housing;Arranged when as flue gas
During discharge port, then flue gas sequentially enters the regenerator, reversal valve, the outside portion space of most heel row from discharging herein.
Embodiments in accordance with the present invention, the heat accumulating burner is changed including 2 combustion chambers, 2 regenerator and 2
To valve, the combustion chamber, regenerator, reversal valve are respectively arranged in the both sides of the reactor shell, described in normal work
The both sides of heat storage type combustion can alternately burn-smoke discharging.
Embodiments in accordance with the present invention, the combustion chamber is divided into A side combusion chambers(A sides exhaust opening)20-1 and B side combusion chambers
(B sides exhaust opening)20-2, the heat accumulating type is divided into A sides regenerator 21-1 and B sides regenerator 21-2, and the reversal valve is divided into A sides
Reversal valve 22-1, B sides reversal valves 22-2.
When the regenerative gas heating system is opened, A sides air line is opened, be then turned on A sides combustion gas
Pipeline, starting ignition rifle lights the mixed gas of air and combustion gas, and mixed gas are produced after burning in the A side combusion chambers
High-temperature flue gas, the exhaust gases passes that high-temperature flue gas are entered into the reactor enclosure body, the high temperature cigarette in the exhaust gases passes
Gas flows along the flue spiral rotating and gives shaped spiral housing heating, then into B sides exhaust opening, last flue gas
It is discharged into external environment by B sides regenerator, B sides reversal valve and flue gas pipeline, after A sides burning certain hour, two
Reversal valve commutation described in side, starts the burning of B sides, and now A sides are discharged fume, both sides alternate combustion-smoke discharging.
According to a particular embodiment of the invention, the specific species of the insulation material is unrestricted, as long as guarantor can be reached
The effect of temperature.In some embodiments of the invention, the insulation material is heat-preservation cotton, and the heat-preservation cotton external application is zinc-plated
Iron plate parcel compacting, to ensure heat insulating ability.
According to a particular embodiment of the invention, the heat storage inside the regenerator can use ceramic bead or ceramic honeycomb
Body, preferably ceramic honeycomb ceramics.
According to a particular embodiment of the invention, Fig. 4 is the half-section diagram of the reactor shell of the embodiment of the present invention, is such as schemed
Shown in 4, the flue spiral is located in the exhaust gases passes, for changing flue gas flow direction, allows flue gas along the flue spiral
Rotational flow so that flue gas can more uniformly heat the shaped spiral housing.
In another aspect of the present invention, electronic waste is carried out using foregoing system the invention provides one kind
The method of pyrolysis.Embodiments in accordance with the present invention, the method is comprised the following steps:
First:Feedstock treating:Electronic waste raw material is crushed into the breaker, then is sieved by sorting unit
Point, obtain metal and organic matter.
By electronic waste raw material by simply disassembling, crushed in feeding mechanical crusher, raw material is crushed to 0-
The electronic waste particle of 30mm.Then sorted, by sorting be metal part and organic matter fractions.
Second:Metal recovery:It is remaining without metal after metal is completely dissolved by metal part feeding acidleach pond
After part is through flue gas drying, mix with the organic matter fractions, pyrolytic reaction is carried out into reaction system.Obtained after dissolving metal
The feeding electrolytic cell of the strong acid solution rich in metal ion in carry out cell reaction, reclaim metallic copper.
Embodiments in accordance with the present invention, the electrolytic cell anode material is graphite, and cathode material is titanium plate, stainless steel
Plate, copper coin and proof gold plate, the voltage range of the electrolytic cell is 0.1-3V, and current density is 1-5A/dm2, temperature is in electrolytic cell
20-80 DEG C, the strong acid solution is the concentrated sulfuric acid or chloroazotic acid.
The anode material of the electrolytic cell 1 is graphite, and cathode material is copper coin.The voltage range of the electrolytic cell is 0.1-
3V, current density is 3A/dm2, and temperature is 35 DEG C in electrolytic cell.More pure copper, product copper can be reclaimed in electrolytic cell 1
Purity close to 100%, the rate of recovery about 98% of the metallic copper obtained by recovery.
The anode material of the electrolytic cell 2 is graphite, and cathode material is proof gold plate.The voltage range of the electrolytic cell is 0.1-
3V, current density is 8A/dm2, and temperature is 70 DEG C in electrolytic cell.More pure gold, product gold can be reclaimed in electrolytic cell 1
Purity close to 100%, the rate of recovery about 98% of the noble metal gold obtained by recovery.
3rd:The regenerative gas heating system is opened, its step is as follows:Open A sides air line, Ran Houkai
A sides burning line is opened, starting ignition rifle lights the mixed gas of air and combustion gas, and mixed gas are in the A side combusion chambers
High-temperature flue gas, the exhaust gases passes that high-temperature flue gas are entered into the reactor enclosure body, in the cigarette are produced after interior burning
High-temperature flue gas flow along the flue spiral rotating and give shaped spiral housing heating in gas passage, then into the B sides
Exhaust opening, last flue gas is discharged into external environment by B sides regenerator, B sides reversal valve and flue gas pipeline, the burning of A sides
After certain hour, reversal valve commutation in both sides starts the burning of B sides, and now A sides are discharged fume, both sides alternate combustion-smoke discharging.
Embodiments in accordance with the present invention, the A sides are the left side of the reactor shell, and the B sides are the reactor
The right side of housing.
According to a particular embodiment of the invention, the flue spiral is located in the exhaust gases passes, for changing flue gas stream
To allowing flue gas to be flowed along the flue spiral rotating so that flue gas can more uniformly heat the shaped spiral housing.
Embodiments in accordance with the present invention, the heat accumulating burner is changed including 2 combustion chambers, 2 regenerator and 2
To valve, the combustion chamber, regenerator, reversal valve are respectively arranged in the both sides of the reactor shell, described in normal work
The both sides of heat storage type combustion can alternately burn-smoke discharging.
Embodiments in accordance with the present invention, the combustion chamber is divided into A side combusion chambers(A sides exhaust opening)20-1 and B side combusion chambers
(B sides exhaust opening)20-2, the heat accumulating type is divided into A sides regenerator 21-1 and B sides regenerator 21-2, and the reversal valve is divided into A sides
Reversal valve 22-1, B sides reversal valves 22-2.
4th, material pyrolytic process:After combustion system stabilization, the shaped spiral housing is heated to 600-700 DEG C, can be in institute
State material inlet and be put into material, the back forward movement side that the material enters into the material propulsion spiral is pyrolyzed, until
Move to slag charge outlet and be pyrolyzed and finish, be pyrolyzed the gas for producing and discharged from the oil gas vent, remaining pyrolysis slag charge
It is discharged from slag charge outlet, after the high-temperature gas is through the cooling separation, obtains pyrolysis gas and tar, the pyrolysis
, rich in the combustibility such as methane, hydrogen, carbon monoxide and reducibility gas, a part is used as heating system raw material combustion gas, heating for gas
Itself, another part can be used as also Primordial Qi.
Embodiments in accordance with the present invention, it is exposed to be provided with material on the shaped spiral housing of the reactor enclosure external body
Import, oil gas vent, slag charge outlet, and the material inlet are located at the shaped spiral housing upper right quarter, the oil gas vent position
In the shaped spiral housing upper left quarter, the slag charge outlet is located at the shaped spiral housing lower left quarter.
Embodiments in accordance with the present invention, the shaped spiral housing is heat-resisting steel sheel, and thickness is 5-8mm, and the propeller cap
Body extends through the opposite side of the reactor shell from the reactor shell side along the reactor enclosure intracoelomic cavity, described
The exposed outside in the reactor shell in two ends of shaped spiral housing so that the reactor shell and the shaped spiral housing
Between form confined space, the confined space constitutes the reactor shell exhaust gases passes of the regenerative gas heating system,
The high-temperature flue gas for producing that burn enter the exhaust gases passes, then transfer heat to its internal shaped spiral housing, described
The outer wrap of reactor shell has insulation material, is used to reduce the radiation loss of wall.
Embodiments in accordance with the present invention, the material propulsion spiral is located inside the shaped spiral housing, and the material
Propulsion spiral include helical axis and helical blade, the helical blade be fixed on the helical axis and be arranged to can with it is described
Helical axis is rotated coaxially, and the helical axis stretches out the shaped spiral housing, the length of the helical blade in the material inlet side
Degree is identical with the shaped spiral housing, and in the case where outside motor belt motor is dynamic with certain rotational speed, material enters into institute to the propulsion spiral
State after reactor, be gradually pyrolyzed with the rising of temperature, while be advanced to, until be pyrolyzed before outlet finish,
It is pyrolyzed the pyrolysis gas for producing to be discharged from the oil gas vent, the slag charge after pyrolysis is exported from the slag charge and discharged.
Inventor has found that the system according to embodiments of the present invention is capable of achieving material of being back to back, and material is in pyrolytic reaction
It is tiled in device, is contacted with shaped spiral housing fully, high-temperature spiral housing is heated by radiation and heat conduction two ways to material, because
This material fully can be quickly pyrolyzed, and material is pushed into spiral in pyrolytic process and gradually pushes ahead, and realizes side
The function of pyrolysis side propulsion;The present invention, by heavy metal removing, is fired using the method for raw material front end pretreatment using spiral heat accumulating type
Gas heating system as pyrolysis reactor thermal source, its fuel be high heating value combustion gas(Natural gas, liquefied petroleum gas etc.), due to adopting
With heat storage type combustion mode, combustion air is preheating to high temperature by regenerator, it is achieved thereby that efficient stable burns.Exhaust gases passes
Flue spiral is inside installed so that flue gas spiral rotating flows, flow field is more uniform, shaped spiral housing is real by heating evenly
Show material of being back to back, material by continuous quick fully pyrolysis and the function such as energy-efficient, and utilize Feedstock treating
System and metal recovery system, it is to avoid the severe contamination that heavy metal is caused, environmental protection.