阅读说明：本技术 一种基于微波热脱水的pcb膜渣减量化处理系统和方法 (A kind of PCB film slag reduction treatment system and method based on microwave heat dehydration ) 是由 陆严宏 宋传京 叶自洁 杨江丽 谈珏 胡剑波 于 2019-09-25 设计创作，主要内容包括：本发明公开了一种基于微波热脱水的PCB膜渣减量化处理系统和方法,该系统包括：进料系统：用于输送PCB膜渣,微波处理系统：与所述进料系统的出料端连接,用于对PCB膜渣进行微波处理,水汽回收系统：与所述微波处理系统的水汽输出端连接,用于回收所述微波处理系统中产生的水汽,膜渣回收系统：与所述微波处理系统的膜渣输出端连接,用于回收所述微波处理系统中产生的膜渣,控制系统：用于控制所述所述进料系统、微波处理系统、水汽回收系统及膜渣回收系统工作。本发明技术方案提高PCB膜渣的脱水效率和脱水效果,降低处理成本。(The invention discloses a kind of PCB film slag reduction treatment system and method based on microwave heat dehydration, the system includes: feed system: for conveying PCB film slag, microwave processing system: it is connect with the discharge end of the feed system, for carrying out microwave treatment to PCB film slag, steam recovery system: it is connect with the steam output end of the microwave processing system, for recycling the steam generated in the microwave processing system, film slag recovery system: it is connect with the film slag output end of the microwave processing system, for recycling the film slag generated in the microwave processing system, control system: for controlling the feed system, microwave processing system, steam recovery system and the work of film slag recovery system.Technical solution of the present invention improves the dehydration efficiency and dehydrating effect of PCB film slag, reduces processing cost.)

1. a kind of PCB film slag reduction treatment system based on microwave heat dehydration characterized by comprising

Feed system: for conveying PCB film slag,

Microwave processing system: connecting with the discharge end of the feed system, described micro- for carrying out microwave treatment to PCB film slag Wave processing system includes a reaction cavity, and installation one is described anti-for conveying the conveying device of PCB film slag in the reaction cavity It answers and is also equipped at least one in cavity and carries out that the microwave generating apparatus of microwave treatment, at least one is for detecting to PCB film slag The temperature transmitter of reaction chamber body temperature,

Steam recovery system: it is connect with the steam output end of the microwave processing system, for recycling the microwave processing system The steam of middle generation,

Film slag recovery system: it is connect with the film slag output end of the microwave processing system, for recycling the microwave processing system The film slag of middle generation,

Control system: controlling with the feed system, microwave processing system, steam recovery system and film slag recovery system and connect, For controlling the feed system, microwave processing system, steam recovery system and the work of film slag recovery system.

2. the PCB film slag reduction treatment system based on microwave heat dehydration as described in claim 1, which is characterized in that described Feed system includes sequentially connected bucket elevator, belt of weighing batcher and feed hopper, installs a pair of in the feed hopper Spiral propeller；The belt of weighing batcher is connect with the feed hopper by the first pneumatic gate valve, and the feed hopper is logical The second pneumatic gate valve is crossed to connect with the microwave processing system.

3. the PCB film slag reduction treatment system based on microwave heat dehydration as described in claim 1, which is characterized in that described Film slag conveying device includes a spiral propeller installed along the reaction cavity length direction, and the reaction cavity top is along institute The direction of propulsion for stating spiral propeller is equipped with several microwave generating apparatus, and is equipped between several microwave generating apparatus Temperature transmitter.

4. the PCB film slag reduction treatment system based on microwave heat dehydration as described in claim 1, which is characterized in that described Steam recovery system includes sequentially connected first condenser and the second condenser, and the exhaust outlet of first condenser passes through one Vacuum pump is connected to second condenser, and the exhaust outlet of second condenser is connect with extraneous gas recovery system；It is described The discharge outlet of first condenser and the second condenser is connected to by a condensate pump with a condensation water tank.

5. the PCB film slag reduction treatment system based on microwave heat dehydration as described in claim 1, which is characterized in that described Film slag recovery system includes a discharge bucket, and the feed end of the discharge bucket passes through a third pneumatic gate valve and the microwave treatment The film slag output end of system connects, and the discharge end of the discharge bucket passes sequentially through a hand operated gate valve, rotary discharge valve and weightlessness Title is connect with the feed end of a drag conveyor, and the discharge end of the drag conveyor connects an automatic packing machine；The discharging Bucket top is also equipped with radar level gauge and vacuum release valve, and the discharge bucket side wall is equipped with resistance rotation level-sensing device and nitrogen protection Device, the discharge bucket bottom are equipped with air bubble and vibrator, also installed in the discharge bucket one for weighing weighing balance.

6. a kind of PCB film slag minimizing processing method based on microwave heat dehydration, which comprises the steps of:

Step S1: PCB film slag is delivered to microwave processing system by feed system；

Step S2: microwave heating treatment and conveying are carried out to PCB film slag by the microwave processing system, adjust microwave treatment system The heating temperature of system is 50 DEG C~180 DEG C, and adjusting PCB film slag microwave heating time is 3min~5min；

Step S3: the steam and film slag that generate in step S2 are recycled respectively by steam recovery system；

Step S3 is specifically included: being recycled by steam recovery system to steam, is carried out by film slag recovery system to film slag Recycling.

7. the PCB film slag minimizing processing method based on microwave heat dehydration as claimed in claim 6, which is characterized in that described Feed system includes sequentially connected bucket elevator, belt of weighing batcher and feed hopper, installs a pair of in the feed hopper Spiral propeller；The belt of weighing batcher is connect with the feed hopper by the first pneumatic gate valve, and the feed hopper is logical The second pneumatic gate valve is crossed to connect with the microwave processing system.

8. the PCB film slag minimizing processing method based on microwave heat dehydration as claimed in claim 6, which is characterized in that described Microwave processing system includes a reaction cavity, and installation one is described for conveying the conveying device of PCB film slag in the reaction cavity It is also equipped at least one in reaction cavity and carries out that the microwave generating apparatus of microwave treatment, at least one is for examining to PCB film slag Survey the temperature transmitter of reaction chamber body temperature.

9. the PCB film slag minimizing processing method based on microwave heat dehydration as claimed in claim 6, which is characterized in that described Steam recovery system includes sequentially connected first condenser and the second condenser, and the exhaust outlet of first condenser passes through one Vacuum pump is connected to second condenser, and the exhaust outlet of second condenser is connect with extraneous gas recovery system；It is described The discharge outlet of first condenser and the second condenser is connected to by a condensate pump with a condensation water tank.

10. the PCB film slag minimizing processing method based on microwave heat dehydration as claimed in claim 6, which is characterized in that described Film slag recovery system includes a discharge bucket, and the feed end of the discharge bucket passes through a third pneumatic gate valve and the microwave treatment The film slag output end of system connects, and the discharge end of the discharge bucket passes sequentially through a hand operated gate valve, rotary discharge valve and weightlessness Title is connect with the feed end of a drag conveyor, and the discharge end of the drag conveyor connects an automatic packing machine；The discharging Bucket top is also equipped with radar level gauge and vacuum release valve, and the discharge bucket side wall is equipped with resistance rotation level-sensing device and nitrogen protection Device, the discharge bucket bottom are equipped with air bubble and vibrator, also installed in the discharge bucket one for weighing weighing balance.

Technical field

The present invention relates to PCB film Slag treatment technical field, in particular at a kind of PCB minimizing based on microwave heat dehydration Manage system and method.

Background technique

The membrane process generation solid-state of moving back of printed circuit board (Printed Circuit Board, abbreviation PCB) manufacturing process is given up Slag is PCB film slag.PCB film slag is integrally in viscose glue shape, viscosity is higher, water penetration is poor, and moisture content is greater than 60%, and surface holds Easily crust, internal moisture can not volatilize.PCB film slag is included in " National Hazard waste register ", and enterprise can not voluntarily be handled.If being not added It has directly entrusted qualification processing manufacturer to carry out burning disposal with dehydration, will seriously affect the outer processing cost of committee, increase enterprise Industry operation cost, while environmental protection administration, government is also unable to satisfy to enterprise's danger wastes overall control.

Existing film slag reduction treatment system and method generally use centrifugal dehydration, screw extrusion dehydration, acidification-filters pressing The water of dehydration, this dewatering type removing is limited, in the film slag obtained after dehydration or contains sub-fraction water, dehydration efficiency Low, the outer expense handled of costs and poor dehydration results, most telolemma slag committee is still higher.

Summary of the invention

The main object of the present invention is to propose a kind of PCB reduction treatment system and method based on microwave heat dehydration, purport In the dehydration efficiency and dehydrating effect for improving PCB film slag, processing cost is reduced.

To achieve the above object, a kind of PCB film slag reduction treatment system based on microwave heat dehydration proposed by the present invention, Include:

Feed system: for conveying PCB film slag,

Microwave processing system: connecting with the discharge end of the feed system, for carrying out microwave treatment, institute to PCB film slag Stating microwave processing system includes a reaction cavity, and installation one is for conveying the conveying device of PCB film slag, institute in the reaction cavity It states and is also equipped at least one in reaction cavity and carries out that the microwave generating apparatus of microwave treatment, at least one is used for PCB film slag The temperature transmitter of reaction chamber body temperature is detected, steam recovery system: connected with the steam output end of the microwave processing system It connects, for recycling the steam generated in the microwave processing system,

Film slag recovery system: it is connect with the film slag output end of the microwave processing system, for recycling the microwave treatment The film slag generated in system,

Control system: it controls and connects with the feed system, microwave processing system, steam recovery system and film slag recovery system It connects, for controlling the feed system, microwave processing system, steam recovery system and the work of film slag recovery system.

Preferably, the feed system includes being sequentially connected bucket elevator, belt of weighing batcher and feed hopper, described One Double-helix propeller is installed in feed hopper；The belt of weighing batcher and the feed hopper are connected by the first pneumatic gate valve It connects, the feed hopper is connect by the second pneumatic gate valve with the microwave processing system.

Preferably, the film slag conveying device includes a spiral propeller installed along the reaction cavity length direction, Direction of propulsion above the reaction cavity along the spiral propeller is equipped with several microwave generating apparatus, and several described micro- Temperature transmitter is installed between wave generating device.

Preferably, the steam recovery system includes sequentially connected first condenser and the second condenser, and described first The exhaust outlet of condenser is connected to by a vacuum pump with second condenser, and the exhaust outlet of second condenser and the external world are useless The connection of gas recovery system；The discharge outlet of first condenser and the second condenser is connected by a condensate pump and a condensation water tank It is logical.

Preferably, the film slag recovery system includes a discharge bucket, and the feed end of the discharge bucket is pneumatic by a third Gate valve is connect with the film slag output end of the microwave processing system, and the discharge end of the discharge bucket passes sequentially through a Manual flashboard Valve, rotary discharge valve and weightless title are connect with the feed end of a drag conveyor, the discharge end connection one of the drag conveyor Automatic packing machine；It is also equipped with radar level gauge and vacuum release valve at the top of the discharge bucket, the discharge bucket side wall is equipped with Resistance rotation level-sensing device and nitrogen protection device, the discharge bucket bottom are equipped with air bubble and vibrator, also pacify in the discharge bucket Fill one for weighing weighing balance.

The present invention also proposes a kind of PCB film slag minimizing processing method based on microwave heat dehydration, includes the following steps:

Step S1: PCB film slag is delivered to microwave processing system by feed system；

Step S2: microwave heating treatment and conveying are carried out to PCB film slag by the microwave processing system, adjusted at microwave The heating temperature of reason system is 50 DEG C~180 DEG C, and adjusting PCB film slag microwave heating time is 3min~5min；

Step S3: the steam and film slag that generate in step S2 are recycled respectively by steam recovery system；

Step S3 is specifically included: being recycled by steam recovery system to steam, by film slag recovery system to film slag It is recycled.

Preferably, the feed system includes being sequentially connected bucket elevator, belt of weighing batcher and feed hopper, described One Double-helix propeller is installed in feed hopper；The belt of weighing batcher and the feed hopper are connected by the first pneumatic gate valve It connects, the feed hopper is connect by the second pneumatic gate valve with the microwave processing system.

Preferably, the microwave processing system includes a reaction cavity, and installation one is for conveying PCB in the reaction cavity The conveying device of film slag is also equipped with the microwave that at least one carries out microwave treatment to PCB film slag in the reaction cavity and occurs Device, at least one is used to detect the temperature transmitter of reaction chamber body temperature.

Preferably, the steam recovery system includes sequentially connected first condenser and the second condenser, and described first The exhaust outlet of condenser is connected to by a vacuum pump with second condenser, and the exhaust outlet of second condenser and the external world are useless The connection of gas recovery system；The discharge outlet of first condenser and the second condenser is connected by a condensate pump and a condensation water tank It is logical.

Preferably, the film slag recovery system includes a discharge bucket, and the feed end of the discharge bucket is pneumatic by a third Gate valve is connect with the film slag output end of the microwave processing system, and the discharge end of the discharge bucket passes sequentially through a Manual flashboard Valve, rotary discharge valve and weightless title are connect with the feed end of a drag conveyor, the discharge end connection one of the drag conveyor Automatic packing machine；It is also equipped with radar level gauge and vacuum release valve at the top of the discharge bucket, the discharge bucket side wall is equipped with Resistance rotation level-sensing device and nitrogen protection device, the discharge bucket bottom are equipped with air bubble and vibrator, also pacify in the discharge bucket Fill one for weighing weighing balance.

Compared with prior art, the beneficial effects of the present invention are: to PCB film slag viscose glue shape, water penetration is poor, surface is easy The characteristic that crust, internal moisture can not volatilize is dehydrated PCB film slag using microwave heating principle and main feature, dehydration efficiency Height, dehydrating effect is good, without secondary pollution without acidification.After PCB film slag minimizing processing, burning is easily facilitated, committee can also be saved Outer handling also significantly reduces the pollution of environment, has achieved the purpose that economic benefit and environmental protection win-win.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with The structure shown according to these attached drawings obtains other attached drawings.

Fig. 1 is PCB film slag reduction treatment system structure chart of the present invention；

Fig. 2 is PCB film slag minimizing processing method flow chart of the present invention；

The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.

Specific embodiment

With reference to Fig. 1 and Fig. 2, Fig. 1 is PCB film slag reduction treatment system structure chart of the present invention；Fig. 2 is PCB film of the present invention Slag minimizing processing method flow chart；

A kind of PCB film slag reduction treatment system based on microwave heat dehydration that the present embodiment proposes, comprising:

Feed system: for conveying PCB film slag,

Microwave processing system: connecting with the discharge end of the feed system, for carrying out microwave treatment, institute to PCB film slag Stating microwave processing system includes a reaction cavity 21, and installation one is for conveying the conveying dress of PCB film slag in the reaction cavity 21 22 are set, at least one microwave generating apparatus 23, extremely for carrying out microwave treatment to PCB film slag is also equipped in the reaction cavity 21 Few one is used to detect the temperature transmitter 24 of temperature in reaction cavity 21,

Steam recovery system: it is connect with the steam output end of the microwave processing system, for recycling the microwave treatment The steam generated in system,

Film slag recovery system: it is connect with the film slag output end of the microwave processing system, for recycling the microwave treatment The film slag generated in system,

Control system: it controls and connects with the feed system, microwave processing system, steam recovery system and film slag recovery system It connects, for controlling the feed system, microwave processing system, steam recovery system and the work of film slag recovery system.It should Illustrate, the set-up of control system is PLC control system commonly used in the prior art, and by inputting program, control is entire Processing system normal operation.

Further, the feed system includes being sequentially connected bucket elevator 11, belt of weighing batcher 12 and charging Bucket 13, the feed hopper 13 is interior to install a Double-helix propeller 14；The belt of weighing batcher 12 and the feed hopper 13 are logical The connection of the first pneumatic gate valve 15 is crossed, the feed hopper 13 is connected by the second pneumatic gate valve 16 with the microwave processing system It connects.

Further, the film slag conveying device 22 is pushed away including one along the spiral that 21 length direction of reaction cavity is installed Into device, 21 top of reaction cavity is equipped with several microwave generating apparatus 23 along the direction of propulsion of the spiral propeller, and Temperature transmitter 24 is installed between several microwave generating apparatus 23.The microwave generating apparatus 23 is set as the prior art In common microwave generator, Double-helix propeller 14 and spiral propeller are both connected to driving device driving end, driving device It is set as drive motor.It should be noted that microwave heating technique is using electromagnetic wave in energy transmission to heating object body Portion, heating reach a kind of required technology of production.Common microwave frequency has 915MHz and 2450MHz.Polarity in substance Molecule is transformed into the polar orientation arrangement according to electric field from original random alignment in electromagnetic field, under microwave action, these Arrangement movement is constantly changed with more than ten00000000 frequencies per second, intermolecular generation strenuous exercise and collision friction, to generate heat Amount, converts electrical energy into the thermal energy in substance, increases the temperature of substance constantly.

Further, the steam recovery system includes sequentially connected first condenser 31 and the second condenser 32, institute The exhaust outlet for stating the first condenser 31 is connected to by a vacuum pump 33 with second condenser 32, second condenser 32 Exhaust outlet is connect with extraneous gas recovery system；The discharge outlet of first condenser 31 and the second condenser 32 passes through a condensation Water pump 34 is connected to a condensation water tank 35.

Further, the film slag recovery system includes a discharge bucket 41, and the feed end of the discharge bucket 41 passes through one the Three pneumatic gate valves 42 are connect with the film slag output end of the microwave processing system, and the discharge end of the discharge bucket 41 passes sequentially through One hand operated gate valve 43, rotary discharge valve 44 and weightless title 45 are connect with the feed end of a drag conveyor 46, and the scraper plate is defeated The discharge end of machine 46 is sent to connect an automatic packing machine 47；Radar level gauge 48 is also equipped at the top of the discharge bucket 41 and vacuum is released Valve 49 is put, 41 side wall of discharge bucket is equipped with resistance rotation level-sensing device 410 and nitrogen protection device 411,41 bottom of discharge bucket Air bubble 412 and vibrator 413 are installed, also installed in the discharge bucket 41 one for weighing weighing balance 414.

Specifically, after PCB film slag is delivered to 12 precise measurement of belt of weighing batcher by bucket elevator 11, the is opened PCB film slag is sent into feed hopper 13 by one pneumatic gate valve 15.It, can be effective by the precise measurement of belt of weighing batcher 12 The PCB film slag of feed hopper 13 is added in control, and preventing the PCB film slag in feed hopper 13 is more than rated capacity.First is closed pneumatically to insert Plate valve 15 opens the second pneumatic gate valve 16, starts driving device, and Double-helix propeller 14 is by the PCB film slag in feed hopper 13 It pushes in reaction cavity 21, length direction of the spiral propeller by PCB film slag along its reaction cavity 21 pushes.At this point, starting Moisture in PCB film slag is become steam, and is detected in reaction cavity 21 by temperature transmitter 24 by microwave generating apparatus 23 Temperature teletransmission automatically controls the power of microwave generating apparatus 23, adjusts the temperature of microwave heating to PLC system.It should illustrate It is that the temperature in reaction cavity 21 controls to adjust the power and driving device of microwave generating apparatus 23 by PLC control system Revolving speed, to control 21 inner region temperature of reaction cavity in 50 DEG C of -180 DEG C of ranges, stop of the PCB film slag in reaction cavity 21 Time keeps 3min-15min.

The steam generated in microwave processing system enters steam recovery system by steam output end, and steam initially enters It is condensed in one condenser 31, condensed condensed water is recycled to condensation water tank 35 through condensate pump 34.First condenser 31 Interior remaining gas enters the second condenser 32 by vacuum pump 33 and carries out time condensation, and the condensed water after time condensation is through condensing Water pump 34 is recycled to condensation water tank 35, and the remaining gas of time condensation is expelled to external exhaust treatment system and is handled.

During the inside spin propeller of reaction cavity 21 pushes forward PCB film slag, third pneumatic gate valve 42 is normally opened, PCB film slag enters in discharge bucket 41, and the uninterruptedly monitoring material position, vacuum release valve 49 of radar level gauge 48 is equipped at the top of discharge bucket 41 It is not influenced by excessive positive pressure and negative pressure in abnormal constantly protect in discharge bucket 41 of air pressure.When in discharge bucket 41 material position it is excessively high or When too low, the resistance of side wall revolves 410 automatic alarm teletransmission of level-sensing device to PLC control system.The air bubble 412 of 41 bottom of discharge bucket with The viscous wall and hardened blocking discharge port of PCB film slag can be effectively prevented in vibrator 413.When the temperature is excessively high can be in discharge bucket 41 Open nitrogen protection device 411.

When the memory space inadequate of discharge bucket 41, weighing balance 414 is opened, this weight for drawing off PCB film slag is once measured Amount opens hand operated gate valve 43, opens rotary discharge valve 44, PCB film slag enter it is weightless claim 45 secondary measurements, after secondary measurement PCB film slag enters automatic packing machine 47 by drag conveyor 46, is packaged to PCB film slag.

Hereinafter, invention is further explained in conjunction with specific embodiments:

The PCB film slag for being 60% to moisture content is handled, and the output power of microwave generating apparatus 23 is 1000W, frequency For 2.45GHz, thermal dehydration is carried out to PCB film slag, controls 21 inner region temperature of reaction cavity in 50 DEG C of -180 DEG C of ranges, PCB Residence time of the film slag in reaction cavity 21 keeps 3min-5min；Specifically, in the present embodiment, microwave generating apparatus 23 Quantity is set as three, successively installs along the direction of propulsion of spiral propeller, and the quantity of temperature transmitter 24 is set as two, point It is not mounted between first microwave generating apparatus 23 and second microwave generating apparatus 23 and third microwave generating apparatus 23 rears, reaction cavity 21 are divided into two regions, are equipped with first microwave generating apparatus 23 in first area, in second area Equipped with second microwave generating apparatus 23 and third microwave generating apparatus 23, wherein first area temperature is controlled in 50-100 DEG C, PCB film slag residence time 3min in first area is kept, second area temperature is controlled at 100-180 DEG C, keeps PCB film Slag residence time 2min in first area；Finally, taking the water content of dewatered PCB film slag sample analysis PCB film slag is 5%.

The present invention also proposes a kind of PCB film slag minimizing processing method based on microwave heat dehydration, includes the following steps:

Step S1: PCB film slag is delivered to microwave processing system by feed system；

Step S2: microwave heating treatment and conveying are carried out to PCB film slag by the microwave processing system, adjusted at microwave The heating temperature of reason system is 50 DEG C~180 DEG C, and adjusting PCB film slag microwave heating time is 3min~5min；

Step S3: the steam and film slag that generate in step S2 are recycled respectively by steam recovery system；

Step S3 is specifically included: being recycled by steam recovery system to steam, by film slag recovery system to film slag It is recycled.

It should be noted that above-mentioned steps are controlled by PLC control system commonly used in the prior art.

Further, the feed system includes being sequentially connected bucket elevator 11, belt of weighing batcher 12 and charging Bucket 13, the feed hopper 13 is interior to install a Double-helix propeller 14；The belt of weighing batcher 12 and the feed hopper 13 are logical The connection of the first pneumatic gate valve 15 is crossed, the feed hopper 13 is connected by the second pneumatic gate valve 16 with the microwave processing system It connects.

Further, the microwave processing system includes a reaction cavity 21, and installation one is used in the reaction cavity 21 The conveying device 22 of PCB film slag is conveyed, at least one is also equipped in the reaction cavity 21, microwave treatment is carried out to PCB film slag Microwave generating apparatus 23, at least one is used to detect the temperature transmitter 24 of temperature in reaction cavity 21.Specifically, the film Slag conveying device 22 includes a spiral propeller installed along 21 length direction of reaction cavity, 21 top of reaction cavity Several microwave generating apparatus 23 are installed along the direction of propulsion of the spiral propeller, and several microwave generating apparatus 23 it Between temperature transmitter 24 is installed.The microwave generating apparatus 23 is set as microwave generator commonly used in the prior art, double spiral shells Rotation propeller 14 and spiral propeller are both connected to driving device driving end, and driving device is set as drive motor.It should illustrate , microwave heating technique is using electromagnetic wave inside energy transmission to heating object, and it is required that heating reaches production A kind of technology.Common microwave frequency has 915MHz and 2450MHz.Polar molecule in substance in electromagnetic field from it is original with Machine arrangement is transformed into the polar orientation arrangement according to electric field, and under microwave action, these arrangement movements are with more than ten00000000 times per second Frequency constantly changes, and intermolecular generation strenuous exercise and collision friction convert electrical energy into the heat in substance to generate heat Can, increase the temperature of substance constantly.

Further, the steam recovery system includes sequentially connected first condenser 31 and the second condenser 32, institute The exhaust outlet for stating the first condenser 31 is connected to by a vacuum pump 33 with second condenser 32, second condenser 32 Exhaust outlet is connect with extraneous gas recovery system；The discharge outlet of first condenser 31 and the second condenser 32 passes through a condensation Water pump 34 is connected to a condensation water tank 35.

Further, the film slag recovery system includes a discharge bucket 41, and the feed end of the discharge bucket 41 passes through one the Three pneumatic gate valves 42 are connect with the film slag output end of the microwave processing system, and the discharge end of the discharge bucket 41 passes sequentially through One hand operated gate valve 43, rotary discharge valve 44 and weightless title 45 are connect with the feed end of a drag conveyor 46, and the scraper plate is defeated The discharge end of machine 46 is sent to connect an automatic packing machine 47；Radar level gauge 48 is also equipped at the top of the discharge bucket 41 and vacuum is released Valve 49 is put, 41 side wall of discharge bucket is equipped with resistance rotation level-sensing device 410 and nitrogen protection device 411,41 bottom of discharge bucket Air bubble 412 and vibrator 413 are installed, also installed in the discharge bucket 41 one for weighing weighing balance 414.

Specifically, after PCB film slag is delivered to 12 precise measurement of belt of weighing batcher by bucket elevator 11, the is opened PCB film slag is sent into feed hopper 13 by one pneumatic gate valve 15.It, can be effective by the precise measurement of belt of weighing batcher 12 The PCB film slag of feed hopper 13 is added in control, and preventing the PCB film slag in feed hopper 13 is more than rated capacity.First is closed pneumatically to insert Plate valve 15 opens the second pneumatic gate valve 16, starts driving device, and Double-helix propeller 14 is by the PCB film slag in feed hopper 13 It pushes in reaction cavity 21, length direction of the spiral propeller by PCB film slag along its reaction cavity 21 pushes.At this point, starting Moisture in PCB film slag is become steam, and is detected in reaction cavity 21 by temperature transmitter 24 by microwave generating apparatus 23 Temperature teletransmission automatically controls the power of microwave generating apparatus 23, adjusts the temperature of microwave heating to PLC system.It should illustrate It is that the temperature in reaction cavity 21 controls to adjust the power and driving device of microwave generating apparatus 23 by PLC control system Revolving speed, to control 21 inner region temperature of reaction cavity in 50 DEG C of -180 DEG C of ranges, stop of the PCB film slag in reaction cavity 21 Time keeps 3min-15min.

The steam generated in microwave processing system enters steam recovery system by steam output end, and steam initially enters It is condensed in one condenser 31, condensed condensed water is recycled to condensation water tank 35 through condensate pump 34.First condenser 31 Interior remaining gas enters the second condenser 32 by vacuum pump 33 and carries out time condensation, and the condensed water after time condensation is through condensing Water pump 34 is recycled to condensation water tank 35, and the remaining gas of time condensation is expelled to external exhaust treatment system and is handled.

During the inside spin propeller of reaction cavity 21 pushes forward PCB film slag, third pneumatic gate valve 42 is normally opened, PCB film slag enters in discharge bucket 41, and the uninterruptedly monitoring material position, vacuum release valve 49 of radar level gauge 48 is equipped at the top of discharge bucket 41 It is not influenced by excessive positive pressure and negative pressure in abnormal constantly protect in discharge bucket 41 of air pressure.When in discharge bucket 41 material position it is excessively high or When too low, the resistance of side wall revolves 410 automatic alarm teletransmission of level-sensing device to PLC control system.The air bubble 412 of 41 bottom of discharge bucket with The viscous wall and hardened blocking discharge port of PCB film slag can be effectively prevented in vibrator 413.When the temperature is excessively high can be in discharge bucket 41 Open nitrogen protection device 411.

When the memory space inadequate of discharge bucket 41, weighing balance 414 is opened, this weight for drawing off PCB film slag is once measured Amount opens hand operated gate valve 43, opens rotary discharge valve 44, PCB film slag enter it is weightless claim 45 secondary measurements, after secondary measurement PCB film slag enters automatic packing machine 47 by drag conveyor 46, is packaged to PCB film slag.

Hereinafter, invention is further explained in conjunction with specific embodiments:

The PCB film slag for being 60% to moisture content is handled, and the output power of microwave generating apparatus 23 is 1000W, frequency For 2.45GHz, thermal dehydration is carried out to PCB film slag, controls 21 inner region temperature of reaction cavity in 50 DEG C of -180 DEG C of ranges, PCB Residence time of the film slag in reaction cavity 21 keeps 3min-5min；Specifically, in the present embodiment, microwave generating apparatus 23 Quantity is set as three, successively installs along the direction of propulsion of spiral propeller, and the quantity of temperature transmitter 24 is set as two, point It is not mounted between first microwave generating apparatus 23 and second microwave generating apparatus 23 and third microwave generating apparatus 23 rears, reaction cavity 21 are divided into two regions, are equipped with first microwave generating apparatus 23 in first area, in second area Equipped with second microwave generating apparatus 23 and third microwave generating apparatus 23, wherein first area temperature is controlled in 50-100 DEG C, PCB film slag residence time 3min in first area is kept, second area temperature is controlled at 100-180 DEG C, keeps PCB film Slag residence time 2min in first area；Finally, taking the water content of dewatered PCB film slag sample analysis PCB film slag is 5%.

The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills Art field, is included within the scope of the present invention.