CN115121597A - Vehicle-mounted van-type continuous microwave soil solid waste treatment equipment - Google Patents
Vehicle-mounted van-type continuous microwave soil solid waste treatment equipment Download PDFInfo
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- CN115121597A CN115121597A CN202210758469.6A CN202210758469A CN115121597A CN 115121597 A CN115121597 A CN 115121597A CN 202210758469 A CN202210758469 A CN 202210758469A CN 115121597 A CN115121597 A CN 115121597A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/06—Reclamation of contaminated soil thermally
- B09C1/065—Reclamation of contaminated soil thermally by pyrolysis
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Abstract
The invention provides vehicle-mounted van-type continuous microwave soil solid waste treatment equipment, which belongs to the technical field of soil remediation equipment and comprises a soil treatment device and a nitrogen protection device, wherein the soil treatment device is provided with a reaction bin for treating organic matter-contaminated soil by microwave, the reaction bin is communicated with a tail gas treatment system, and two ends of the reaction bin are respectively provided with a feeding hole and a discharging hole which are suitable for the contaminated soil to enter and exit; the nitrogen protection device is provided with a nitrogen discharge pipe suitable for being communicated with the reaction bin, the nitrogen protection device is used for conveying nitrogen to the interior of the reaction bin, and the conveyed nitrogen forms an air curtain in the reaction bin so as to reduce the oxygen content in the reaction bin. The vehicle-mounted compartment type continuous microwave soil solid waste treatment equipment provided by the invention solves the technical problem that organic waste gas generated in the treatment process of organic matter-polluted soil is easy to explode, and has the technical effects that the oxygen content is reduced after nitrogen is input into the reaction bin, the air curtain can prevent external oxygen from entering the reaction bin, and the organic gas is effectively prevented from exploding.
Description
Technical Field
The invention belongs to the technical field of soil remediation equipment, and particularly relates to vehicle-mounted van-type continuous microwave soil solid waste treatment equipment.
Background
At present, main pollutants of chemical polluted site soil comprise various volatile/semi-volatile organic compounds, phosphorus-containing organic compounds, nitrogen-containing organic compounds and the like, and in order to meet the environmental protection requirement, the polluted soil needs to be treated. It handles through traditional thermal desorption equipment among the prior art, and thermal desorption equipment is mostly large-scale fixed equipment, and inconvenient removal can't realize portable operation, and thermal desorption equipment can lead to the soil structure to change to the mode of pollutant is got rid of in soil heating moreover, hinders soil pollutant and gets rid of the effect, and soil inlayer pollutant takes place pyrolysis, is unfavorable for organic pollutant's desorption processing. In addition, organic waste gas can be generated in the process of treating the organic matter-polluted soil, the organic waste gas belongs to flammable and explosive gas, and when the reaction bin has oxygen and the oxygen content reaches the explosion condition, the organic waste gas is easy to explode at high temperature in the reaction bin, so that the equipment safety is seriously influenced.
Disclosure of Invention
The invention aims to provide vehicle-mounted van-type continuous microwave soil solid waste treatment equipment, and aims to solve the technical problem that organic waste gas generated in the treatment process of organic matter-polluted soil is easy to explode.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a continuous microwave soil solid useless treatment facility of on-vehicle van-type, includes:
the soil treatment device is provided with a reaction bin for treating organic matter contaminated soil by microwave, the reaction bin is communicated with a tail gas treatment system, and two ends of the reaction bin are respectively provided with a feeding hole and a discharging hole which are suitable for the contaminated soil to enter and exit; and
the nitrogen protection device is provided with a nitrogen discharge pipe suitable for being communicated with the reaction bin, the nitrogen protection device is used for conveying nitrogen to the interior of the reaction bin, and the conveyed nitrogen forms an air curtain in the reaction bin so as to reduce the oxygen content in the reaction bin.
In a possible implementation manner, the vehicle-mounted compartment type continuous microwave soil solid waste treatment equipment further comprises two groups of nitrogen protection partition boxes which are respectively arranged at the feed inlet and the discharge outlet, the nitrogen protection partition box is hollow, the nitrogen protection partition box is provided with a material port suitable for soil to enter and exit along the soil inlet and outlet direction, the material port is aligned with the feed inlet or the discharge outlet, a first nitrogen purging pipe is connected inside the nitrogen protection partition box, and the first nitrogen purging pipe is communicated with the nitrogen protection device and conveys nitrogen to the inside of the nitrogen protection partition box.
In a possible implementation manner, a first oxygen sensor is connected in the reaction bin, the first oxygen sensor is electrically connected with the soil treatment device, the soil treatment device is electrically connected with the nitrogen protection device, and the soil treatment device controls the nitrogen conveying amount of the nitrogen protection device according to the oxygen content monitored by the first oxygen sensor.
In a possible implementation mode, the nitrogen protection device comprises at least one group of nitrogen generator, one end of the nitrogen discharge pipe is communicated with the nitrogen output end of the nitrogen generator and the other end of the nitrogen discharge pipe is communicated with the reaction bin, and a positive pressure state is formed in the reaction bin in the nitrogen conveying process.
In a possible implementation manner, the nitrogen protection device further comprises a power supply in conductive connection with the nitrogen generator, and the power supply is suitable for supplying power to the nitrogen generator and can be charged and discharged.
In a possible implementation manner, the feed inlet with discharge gate department equipartition has second oxygen sensor, second oxygen sensor is used for monitoring the feed inlet with discharge gate department oxygen content, second oxygen sensor with soil processing apparatus electric connection, soil processing apparatus basis the oxygen content control of second oxygen sensor monitoring nitrogen gas protection device's nitrogen gas delivery volume.
In a possible implementation mode, the reaction bin inner wall rotates and is connected with the axis of rotation, the axis of rotation is connected with hollow structure sweeps the stick, the reaction bin inner wall is equipped with and is used for the drive the rotatory driver of axis of rotation, driver power take off end with the axis of rotation is connected, it is fan-shaped swing and swing face in vertical face to sweep the stick, it is connected with the second nitrogen gas and sweeps the pipe to sweep the stick, the second nitrogen gas sweeps the pipe intercommunication nitrogen protection device and with the help the swing that sweeps the stick to be fan-shaped nitrogen gas that sweeps in the reaction bin.
In a possible implementation manner, the inner wall of the reaction bin is connected with an arc-shaped sliding rail, the middle of the purging rod is connected with a sliding block, the sliding block is connected with the arc-shaped sliding rail in a sliding manner, and the purging rod is connected with a limiting part which is suitable for abutting against the arc-shaped sliding rail.
In a possible implementation, sweep stick one end with rotation axis connection, the other end are the free end, it is close to sweep the stick rotation axis department is equipped with the passway, the free end is equipped with the passway, the second nitrogen is swept pipe one end and is followed the passway penetrates and follows the passway is worn out, the second nitrogen is swept a pipe nitrogen output and is connected with the air cock, the air cock be suitable for to carry nitrogen gas in the reaction bin.
In one possible implementation manner, the purging rod is a telescopic member and has a degree of freedom of stretching towards the middle of the reaction bin.
The vehicle-mounted van-type continuous microwave soil solid waste treatment equipment provided by the invention has the beneficial effects that: compared with the prior art, the vehicle-mounted van-type continuous microwave soil solid waste treatment equipment comprises a soil treatment device and a nitrogen protection device, wherein the soil treatment device is provided with a reaction bin for treating organic matter polluted soil by microwaves, the reaction bin is communicated with a tail gas treatment system, and two ends of the reaction bin are respectively provided with a feeding hole and a discharging hole which are suitable for the polluted soil to enter and exit; nitrogen protection device has the nitrogen gas delivery pipe who is suitable for the intercommunication reaction storehouse, nitrogen protection device is used for to the inside nitrogen gas of carrying in reaction storehouse, the nitrogen gas of transport forms the air curtain in reaction storehouse, with the interior oxygen content of reduction reaction storehouse, the solution is to the organic waste gas that organic matter polluted soil produced in the course of the treatment technical problem that explodes easily, reduce oxygen content after having to reaction storehouse input nitrogen gas, the air curtain can prevent that outside oxygen from getting into reaction storehouse, effectively prevent the technical effect that organic gas from exploding.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic perspective view of a vehicle-mounted van-type continuous microwave soil solid waste treatment device provided by an embodiment of the invention;
fig. 2 is a schematic structural view of a vehicle-mounted van-type continuous microwave solid soil waste treatment device according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a reaction bin and two groups of nitrogen protective partition boxes of the vehicle-mounted van-type continuous microwave soil solid waste treatment equipment provided by the embodiment of the invention;
fig. 4 is a schematic structural view of a reaction bin of the vehicle-mounted van-type continuous microwave soil solid waste treatment equipment provided by the embodiment of the invention;
fig. 5 is a schematic structural view of a part of an inner wall of a reaction chamber of a vehicle-mounted van-type continuous microwave solid soil waste treatment device according to another embodiment of the invention;
FIG. 6 is a schematic structural diagram of the inner wall of the reaction chamber of the on-board compartment-type continuous microwave solid waste soil treatment equipment according to another embodiment of the present invention (before the second nitrogen purging pipe is not installed);
fig. 7 is a schematic structural view of a modified embodiment of the purge rod of fig. 5 or 6.
Description of the reference numerals:
10. a soil treatment device; 11. a reaction bin; 12. a first oxygen sensor; 13. a second oxygen sensor; 20. a nitrogen protection device; 21. a nitrogen gas discharge pipe; 30. a nitrogen protection partition box; 31. a material port; 32. a first nitrogen purge tube; 40. a rotating shaft; 50. a purging rod; 51. a slider; 52. an inlet; 53. a penetration port; 60. a driver; 70. a second nitrogen purge tube; 71. an air faucet; 80. an arc-shaped slide rail.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 7, the present invention will now be described with reference to a car-mounted compartment type continuous microwave soil solid waste treatment device. The vehicle-mounted van-type continuous microwave soil solid waste treatment equipment comprises a soil treatment device 10 and a nitrogen protection device 20, wherein the soil treatment device 10 is provided with a reaction bin 11 for treating organic matter contaminated soil by microwave, the reaction bin 11 is communicated with a tail gas treatment system, and two ends of the reaction bin 11 are respectively provided with a feeding hole and a discharging hole which are suitable for the contaminated soil to enter and exit; the nitrogen protection device 20 has a nitrogen discharge pipe 21 adapted to communicate with the reaction chamber 11, and the nitrogen protection device 20 is used for supplying nitrogen to the interior of the reaction chamber 11, and the supplied nitrogen forms an air curtain in the reaction chamber 11 to reduce the oxygen content in the reaction chamber 11.
Compared with the prior art, the vehicle-mounted van-type continuous microwave soil solid waste treatment equipment provided by the invention has the technical effects that nitrogen is introduced into the reaction bin 11, the nitrogen and the oxygen are mixed to reduce the oxygen content, the technical problem that organic waste gas generated in the treatment process of soil polluted by organic matters is easy to explode is solved, the oxygen content is reduced after the nitrogen is input into the reaction bin 11, an air curtain can prevent external oxygen from entering the reaction bin 11, and the organic gas is effectively prevented from exploding.
The invention relates to a vehicle-mounted compartment type continuous microwave soil solid waste treatment device, wherein the continuous mode means that soil is in a continuous mode in the treatment process, namely the soil input-soil treatment-soil output is continuous operation, compared with the discontinuous mode or the closed mode, the continuous mode is that the soil is contacted with the outside air in the treatment process, oxygen in the air enters a reaction bin for continuous operation, and the oxygen is mixed with organic waste gas generated in the treatment process and then explodes, so a nitrogen protection device 20 is needed to be arranged in the device, nitrogen is filled into the reaction bin 11, the oxygen content in the reaction bin 11 is reduced, and the organic waste gas explosion and the like are effectively prevented.
The microwave power in the soil treatment device 10 is 75KW for the following applications: the device is suitable for thermal desorption treatment of contaminated soil, the soil needs to be pre-crushed and sieved, the granularity is less than 10mm, a chain plate type transmission mechanism is used for conveying the soil, the maximum temperature resistance of the chain plate type transmission mechanism is 800 ℃, and the general use temperature range is 0-500 ℃.
The service environment of the device is as follows: the input power supply is three-phase, 380V (10% variation range), 50 Hz; the power distribution is more than 105KW, and the device is suitable for the devices without inflammable, explosive and corrosive gases, and the auxiliary parts of the device comprise a moisture exhaust fan and a pipeline. The environment temperature is-5-40 deg.C, and the relative humidity is less than or equal to 80%.
Two groups of microwave suppressors are arranged in the soil treatment device 10, are respectively arranged at two ports of the reaction bin 11 and are made of stainless steel materials, the length of each microwave suppressor is 1.5 m, the table top lengths of the feeding port and the discharging port are 0.7 m, and the leakage prevention mode of the microwave suppressors is an inductive reactance type suppression sheet plus absorption mode. The microwave leakage is less than 5mW/cm 2 (according with national standard).
Each structure and corresponding parameter that chain slat type transmission device includes are: the speed regulating motor is a variable frequency speed regulating motor, the conveying belt is of a structure of material containing turnover and a transmission chain, transmission is stable, and the service life is long. The material containing turning plate adopts a structure that a hard carbon steel frame is embedded with ceramic glass, has good microwave characteristic and resists high temperature of materials. Or the material containing turning plate is made of high-temperature resistant silicon carbide material. The conveying speed is 0.5-5m/min and is adjustable. The driving wheel comprises a driving wheel and a driven wheel and is used for conveying the conveying belt. A stainless steel angle iron track is arranged in the device and used for supporting and guiding the chain. The material conveying process is controlled by a program and operated by a touch screen. The chain plate type transmission mechanism is subjected to stepless speed change regulation, and adopts variable frequency control, so that the stability and reliability of transmission speed are ensured.
In this embodiment, nitrogen gas discharge pipe 21 is two, locate feed inlet and discharge gate top, the air curtain that produces through the transport of nitrogen gas, can be in intangible seal feed inlet and discharge gate, make 11 inside formation closed form spaces in reaction storehouse, then be located 11 outside oxygen of reaction storehouse and do not go inside reaction storehouse 11, and 11 inside nitrogen gas input that has all the time in reaction storehouse, the organic waste gas that produces in the processing procedure in reaction storehouse 11 passes through tail gas treatment system and absorbs and handles, make 11 inside oxygen content in reaction storehouse maintain about 4% all the time, be under the anaerobic environment almost, can effectively prevent organic waste gas high temperature explosion, reduce the safety risk.
The nitrogen protection device 20 is at least provided in one group.
In order to form a sealed environment in the reaction chamber 11, in some embodiments, referring to fig. 1 to 7, the vehicle-mounted compartment-type continuous microwave soil solid waste treatment equipment further includes two sets of nitrogen protection partition boxes 30 respectively disposed at the feeding port and the discharging port, the nitrogen protection partition boxes 30 are hollow, the nitrogen protection partition boxes 30 have material ports 31 suitable for soil to enter and exit along the soil entering and exiting direction, the material ports 31 are aligned with the feeding port or the discharging port (along the horizontal direction), a first nitrogen purging pipe 32 is connected inside the nitrogen protection partition boxes 30, and the first nitrogen purging pipe 32 is communicated with the nitrogen protection device 20 and supplies nitrogen to the inside of the nitrogen protection partition boxes 30.
Through setting up two sets of nitrogen protection and cutting off case 30, can reduce the oxygen volume that gets into reaction storehouse 11 of feed inlet and discharge gate, prevent to take place high temperature explosion in the reaction storehouse 11.
The nitrogen gas blown by the first nitrogen gas blowing pipe 32 can run simultaneously with the nitrogen gas input in the reaction bin 11, when the equipment is started and the running state is processed, the nitrogen gas is blown into the reaction bin 11 and the nitrogen gas protection partition box 30, so that the content of oxygen in the reaction bin 11 is always kept below 4%, and the organic waste gas cannot explode in an oxygen-deficient environment, namely, the explosion condition is not provided.
Specifically, the nitrogen protection partition box 30 is in a cuboid shape, the middle part of the nitrogen protection partition box can enable contaminated soil to pass through, and meanwhile nitrogen inside the nitrogen protection partition box 30 can also form an air curtain, namely the nitrogen is blown from top to bottom, so that oxygen can be invisibly blocked from being input into the nitrogen protection partition box 30 and the reaction bin 11. The inside of the nitrogen protective cutoff box 30 may be in a positive pressure state.
The first nitrogen purging pipe 32 penetrates from the upper end of the nitrogen protection partition box 30, the air outlet end is positioned above the inner part of the nitrogen protection partition box 30 and is used for purging nitrogen in a vertical and downward state, and the nitrogen of the part can form an air curtain.
In order to monitor the oxygen content in the reaction chamber 11 in real time, so as to reasonably control the amount of nitrogen gas input into the reaction chamber 11 and maintain the oxygen content below 4%, in some embodiments, referring to fig. 1 to 7, a first oxygen sensor 12 is connected in the reaction chamber 11, the first oxygen sensor 12 is electrically connected to the soil treatment device 10, the soil treatment device 10 is electrically connected to the nitrogen protection device 20, and the soil treatment device 10 controls the nitrogen gas transmission amount of the nitrogen protection device 20 according to the oxygen content monitored by the first oxygen sensor 12.
The oxygen content can be monitored in time through the first oxygen sensor 12, monitored information can be transmitted to the soil treatment device 10 in time, the current oxygen content in the reaction bin 11 can be observed in time on the soil treatment device 10, and a basis is provided for further reasonably controlling the amount of nitrogen input into the reaction bin 11, so that the oxygen content in the reaction bin 11 is reduced, and the generated organic waste gas is prevented from exploding and the like.
In some embodiments, referring to fig. 1 to 7, the nitrogen protection device 20 includes at least one set of nitrogen generator, one end of the nitrogen exhaust pipe 21 is connected to the nitrogen output end of the nitrogen generator, the other end is connected to the reaction chamber 11, and the interior of the reaction chamber 11 is in a positive pressure state during the nitrogen transportation process. Nitrogen generator parameters 15Nm 3 H99%, cooling the material under hot condition, and protecting the environment with positive pressure atmosphere.
The nitrogen generator is prepared by using nitrogen in air, the preparation cost is low, the nitrogen is also prepared by the principles of compressed air and oxygen generation, the nitrogen conveying amount, the startup and shutdown and the like of the nitrogen generator can be manually controlled by manpower, and the nitrogen generator can be electrically connected with the soil treatment device 10 and automatically controlled (including nitrogen conveying) by the soil treatment device 10.
The soil treatment device 10 is provided with a PLC treatment system, the nitrogen generator is electrically connected with the PLC treatment system, and the nitrogen generator can be controlled to be turned on or off, the conveying capacity and the like through the control of the soil treatment device 10, so that the automatic control of the nitrogen generator is realized.
When being the malleation state in the reaction storehouse 11, the organic waste gas of production can initiatively flow into tail gas treatment system, and this tail gas treatment system is the partly structure of this equipment, can handle waste gas, and the emission accords with the gas of environmental protection requirement.
The above or below mentioned devices are all referred to as the present invention.
Specifically, the four nitrogen generators used in this embodiment have a flow rate of 58L/min, so that the material (contaminated soil) is in a positive pressure state under a thermal state condition, and in a nitrogen environment, the generated organic waste gas cannot reach an explosion condition, so that explosion cannot occur, and the potential safety hazard of equipment is reduced.
In some embodiments, referring to fig. 1-7, the nitrogen protection device 20 further comprises a power supply (not shown) in conductive communication with the nitrogen generator, the power supply being adapted to supply power to the nitrogen generator and being rechargeable.
The power supply can supply power to the nitrogen generator independently of commercial power, preferably, an inverter is connected to the electric energy output end of the power supply, and a direct current power supply is converted into an alternating current power supply through the inverter and supplies power to the nitrogen generator.
Specifically, the UPS in the prior art can be selected as the power supply, and the power supply can be maintained for the nitrogen generator under the condition of abnormal power failure of equipment, so that the nitrogen conveying interruption occurs. The inverter may not be used when using a UPS power source.
The power supply can also select a portable power source in the prior art, can supply power for the nitrogen generator after being connected with the nitrogen generator through wiring harness conducting wires, can be charged and discharged, can be used for unlimited times, and improves the use convenience.
The power supply is arranged inside the container and is detachably connected with the container, so that the container is convenient to mount and dismount and convenient to use.
In some embodiments, referring to fig. 1 to 7, the feeding inlet and the discharging outlet are both provided with a second oxygen sensor 13, the second oxygen sensor 13 is used for monitoring the oxygen content at the feeding inlet and the discharging outlet, the second oxygen sensor 13 is electrically connected to the soil treatment device 10, and the soil treatment device 10 controls the nitrogen delivery amount of the nitrogen protection device 20 according to the oxygen content monitored by the second oxygen sensor 13.
The second oxygen sensor 13 is the same as the first oxygen sensor 12 in principle, but is arranged at a different position, and the total number of the three oxygen sensors is three, as long as the oxygen value detected by one oxygen sensor exceeds 4%, the soil treatment device 10 controls the nitrogen protection device 20 to start and conveys nitrogen into the reaction bin 11, the conveying amount of the nitrogen is adjusted by the soil treatment device 10, so that the oxygen content in the reaction bin 11 is maintained below 4%, and the risk of high-temperature explosion caused by organic waste gas is reduced.
The first oxygen sensor 12 and the second oxygen sensor 13 are both sensors capable of monitoring oxygen content in the prior art, an electric control system is arranged on the soil treatment device 10, and the current oxygen content value can be observed in real time on the electric control system, so that the basis is provided for reasonably controlling the nitrogen conveying amount of the nitrogen protection device 20.
In order to fully mix the nitrogen inside the reaction chamber 11 with the organic waste gas and reduce the oxygen content, in some embodiments, referring to fig. 1 to 7, a rotating shaft 40 is rotatably connected to an inner wall of the reaction chamber 11, the rotating shaft 40 is connected to a purging rod 50 having a hollow structure, a driver 60 for driving the rotating shaft 40 to rotate is disposed on the inner wall of the reaction chamber 11, a power output end of the driver 60 is connected to the rotating shaft 40, the purging rod 50 swings in a fan shape, a swinging surface of the purging rod is in a vertical plane, the purging rod 50 is connected to a second nitrogen purging pipe 70, and the second nitrogen purging pipe 70 is communicated with the nitrogen protection device 20 and purges nitrogen in the reaction chamber 11 in a fan shape by the swinging of the purging rod 50.
The driver 60 may be disposed inside the inner wall of the reaction chamber 11 and connected to the rotation shaft 40 by a belt drive or a chain drive. When a chain drive is used, a sprocket is mounted on the shaft 40, as is known in the art.
Specifically, the second nitrogen purge pipe 70 and the first nitrogen purge pipe 32 operate simultaneously, and nitrogen is conveyed into the reaction bin 11 through the second nitrogen purge pipe 70, so that the nitrogen can be mixed with organic waste gas or oxygen, and the oxygen content in the reaction bin 11 is reduced, and along with the conveying of the nitrogen and the absorption gas of a tail gas treatment system, the gas in the reaction bin 11 is maintained in a positive pressure balanced state, and the oxygen content is also maintained below 4% all the time, so that explosion accidents are prevented.
Specifically, the driver 60 is a motor, the speed of which is adjustable, and which can rotate forward and backward and drive the rotation shaft 40 to rotate, the rotation angle of the rotation shaft 40 is smaller than 180 ° under normal conditions, that is, the rotation shaft is in a swing type reciprocating rotation, and along with the transportation of nitrogen, the gas inside the reaction chamber 11 can be dispersed to be in a mixed state, so that the nitrogen is mixed with other gases.
The rotating plane of the purging rod 50 is in a vertical plane and can swing or rotate in a reciprocating manner in the process of conveying nitrogen, so that the gas mixing efficiency in the reaction chamber 11 is improved, and the oxygen content is reduced.
Preferably, the purging rod 50 is in an inverted Y-shaped structure, one end of the purging rod is connected to the rotating shaft 40, and when the rotating shaft 40 rotates, the purging rod 50 performs a swing-type operation.
In order to keep the purging rod 50 stable during the swinging process, in some embodiments, please refer to fig. 1 to 7, an arc-shaped sliding rail 80 is connected to the inner wall of the reaction chamber 11, a sliding block 51 is connected to the middle of the purging rod 50, the sliding block 51 is slidably connected to the arc-shaped sliding rail 80, and the purging rod 50 is connected to a limiting member adapted to abut against the arc-shaped sliding rail 80.
Preferably, the sliding block 51 is located in the middle of the side of the purging rod 50, and the side is also arc-shaped and can slide in a manner of being matched with the arc-shaped sliding rail 80, so that the purging rod 50 can stably swing or rotate in a reciprocating manner, and swing at a constant speed is realized, and nitrogen can be mixed with other gases in a large range compared with the case that the purging rod 50 does not rotate.
In order to make the second nitrogen purging tube 70 and the purging rod 50 be well integrated, the normal nitrogen conveying of the second nitrogen purging tube 70 is not affected during the swinging process of the purging rod 50, in some embodiments, referring to fig. 1 to 7, one end of the purging rod 50 is connected to the rotating shaft 40, the other end is a free end, the purging rod 50 is provided with a penetrating port 52 near the rotating shaft 40, the free end is provided with a penetrating port 53, one end of the second nitrogen purging tube 70 penetrates through the penetrating port 52 and penetrates out of the penetrating port 53, the nitrogen output end of the second nitrogen purging tube 70 is connected to an air tap 71, and the air tap 71 is suitable for conveying nitrogen into the reaction chamber 11. The air nozzle 71 is provided with a plurality of outlets for outputting nitrogen in different directions.
Specifically, the second nitrogen purging pipe 70 is disposed near the nitrogen output end in a triangular structure, which is similar to a three-way structure, because the purging rod 50 is Y-shaped, the disposed second nitrogen purging pipe 70 is also Y-shaped, and the two are used in cooperation with each other. Namely, an outlet is added on the basis of the original nitrogen purging pipe, and the nitrogen blown out from the outlet can face to different directions, so that the nitrogen can be purged towards different directions in the reaction bin 11.
Of course, the purging rod 50 can be set to be a hollow cylindrical structure, the second nitrogen purging pipe 70 is a common pipeline, and the pipeline penetrates into the purging rod 50 and is led out from one end, so that purging of nitrogen can be achieved, but the purging rod is set to be larger in nitrogen purging range, wider in area, higher in mixing efficiency with other gases and capable of preventing oxygen content from increasing in time.
In some embodiments, referring to fig. 1 to 7, the purge rod 50 is a telescopic member and has a degree of freedom to be telescopic toward the middle of the reaction chamber 11. That is, the stretching and retracting of the purging rod 50 is along the horizontal direction or the vertical direction, and always faces the center of the reaction chamber 11, and the stretching and retracting of the purging rod has the function of extending the position of the nitrogen gas to be conveyed into the reaction chamber 11, and the closer to the center of the reaction chamber 11, the higher the mixing efficiency of the nitrogen gas and other gases is, the faster the mixing speed is, so that the oxygen content can be reduced as soon as possible, and accidents such as organic waste gas explosion can be prevented. The telescopic member is manually adjustable, the telescopic length is adjustable, and the telescopic member can be limited after being adjusted.
Wherein, the setting position of the penetrating port 52 does not influence the normal telescopic operation of the purging rod 50, and the penetrating port 52 is positioned at the right side of the telescopic part when seen from fig. 7.
The soil treatment device 10 can adopt a mobile microwave rapid thermal desorption device for organic contaminated soil in the prior art, and comprises a rack, a chain plate conveying mechanism, a microwave suppressor and a container, wherein the container can be placed on a vehicle to realize vehicle-mounted van-type continuous microwave soil solid waste treatment. In addition, the inside air cooling system, arrange damp system, control system and the electric cabinet that is equipped with of container, pollute soil and convey to the other end from link joint transport mechanism one end, are heated by the microwave in the transfer process, and the solid useless by the heating desorption in the soil.
Specifically, the container size: 12.02 × 2.35 × 2.38m (length × width × height, standard type), the front of the container is provided with 2 metal doors, the left side door is an operation control cabinet, and the right side door is an electrical detection and maintenance door. The lower half part of the front of the container is provided with three container air inlets, the upper half part of the rear is provided with five groups of corresponding container air outlets for air flow and taking away equipment heat to keep a good working environment, and the air inlets and the air outlets are provided with rain-proof shutters and fans which are suitable for outdoor work; meanwhile, the container is ensured to have no harmful gas, and the safety of personnel is ensured. A group of moisture discharge ports are arranged at the back of the container, and flanges with the diameter of 300mm are reserved, so that a user can be conveniently connected with a gas purification structure or equipment in the follow-up process. The right side of the container is provided with a double-door structure, after the double-door structure is opened, a user sends materials into a feeding hopper through a lifting machine (or manual feeding), and the materials can be continuously fed after the equipment operates. The left side of the container is opened, a blanking hopper and a spiral conveyor vertical to the blanking hopper are arranged in the container, after the container is operated, the processed materials can be discharged through the back of the equipment, and a discharge hole is reserved in the back of the equipment, so that a user can conveniently connect with subsequent material receiving process equipment.
The reaction chamber is about 11000 x 1300 x 1900mm (length x width x height, including the size of the feeding hopper and the discharging hopper), the reaction chamber 11 is also called a heating box body made of 304 stainless steel material, and an insulating layer is arranged in the heating box body to ensure the internal temperature. Install stainless steel blanking fill and height-adjustable's auxiliary material scraper blade and cake formula filter in the feed port department of reaction storehouse 11, guarantee that the thickness of tight material is even, avoid the bulky stone more than 10mm to sneak into reaction storehouse (pyrolysis chamber). The design and installation of the device generally allows for safety, stability, reliability, hygiene, ease of operation and maintenance requirements. The frame is fixed with the container to prevent shaking in use or transportation.
The microwave heating inside this device is realized through the microwave system, and the microwave system parameter includes: microwave frequency 2450MHz, microwave power 75KW, the microwave cabinet includes six microwave heating boxes, effective heating length is about 6.6 m. The microwave source adopts a certified samsung 1KW air-cooled magnetron, so that the heat dissipation is good, and the load resistance is strong; the power supply adopts an industrial-grade variable frequency power supply and is suitable for 24-hour continuous work. In addition, advanced multi-source multi-port broadband feed-in is adopted, and the balance of heat in the box body is ensured. The microwave feeding mode is top feeding. The microwave power regulating range is 1-75 KW.
The structure of the microwave heating box comprises: the top of the box body is provided with 5 horn-shaped moisture discharge ports, so that the moisture discharge effect is enhanced. The box body is internally provided with a conveyor belt guide rail, so that the deviation is prevented, and the transmission and the feeding are convenient and stable. The microwave feed inlet adopts a ceramic plate for sealing and shielding, and the influence of water vapor is prevented. An inner heat insulation structure and a heat insulation channel are arranged in the box body, so that heat loss is reduced, and the treatment effect is improved.
The device also comprises a temperature control system, wherein the temperature control system comprises an infrared temperature measurement device and a microwave source temperature control device, adopts an infrared temperature measurement instrument, is arranged in the front, middle and back of the device, and is used for measuring the temperature of the internal materials in real time and dynamically monitoring the temperature condition of drying and heating. The microwave source temperature control sets a temperature protector for a single microwave source, and can automatically protect against abnormal temperature.
The device also comprises a moisture discharge system, in particular to a moisture discharge system comprising 5 groups of 750W centrifugal fans (1400 and 2800 m) 3 H), carry out gaseous forced exhaust in the 5 groups of boxes, but every fan independent switch just corresponds the pipeline and sets up manual air door, can artificially set up the airflow that corresponds to the inside temperature condition of adjustment. The 5-component separator pipelines are connected in parallel through the inside, one pipeline is uniformly discharged out of the container, and a client is connected with a corresponding collected gas disposal device according to needs. The blast pipe adopts stainless steel pipeline, parallelly connected row damp assembly, and the anterior segment is got rid of the moisture fast, and the back end gets rid of high temperature pyrolysis gas, and the back end corresponds the fan postposition, avoids the high temperature influence.
The control system of the device comprises: the control mode adopts industrial electric automation PLC control and touch screen operation, the temperature measurement adopts three groups of infrared thermometers for temperature measurement, the temperature measurement range is 0-900 ℃, the microwave power adjustment range is 1-75KW, the microwave power can be adjusted and used, the number of microwave sources can be started according to actual needs, and proper power is selected to save energy.
The reaction chamber 11 of the device is divided into three functional areas, namely a drying temperature-raising area, a high-temperature desorption area and a constant-temperature blanking area.
Specifically, above-mentioned device still includes mobile terminal (not shown in the figure), and automatically controlled cabinet and mobile terminal all have mutual wireless communication connection's communication unit, realize wireless communication between mobile terminal and the automatically controlled cabinet, and automatically controlled cabinet can control the operation of nitrogen protection device 20, then also can control the operation of nitrogen protection device 20 on mobile terminal, and then the conveying capacity of reasonable control nitrogen gas.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. On-vehicle continuous microwave soil of van-type is useless treatment facility admittedly, its characterized in that includes:
the soil treatment device is provided with a reaction bin for treating organic matter contaminated soil by microwave, the reaction bin is communicated with a tail gas treatment system, and two ends of the reaction bin are respectively provided with a feeding hole and a discharging hole which are suitable for the contaminated soil to enter and exit; and
the nitrogen protection device is provided with a nitrogen discharge pipe suitable for being communicated with the reaction bin, the nitrogen protection device is used for conveying nitrogen to the inside of the reaction bin, and the conveyed nitrogen forms an air curtain in the reaction bin so as to reduce the oxygen content in the reaction bin.
2. The vehicle-mounted compartment type continuous microwave soil solid waste treatment equipment according to claim 1, further comprising two sets of nitrogen protection partition boxes respectively arranged at the feeding port and the discharging port, wherein the nitrogen protection partition boxes are hollow, the nitrogen protection partition boxes are provided with material ports suitable for soil to enter and exit along the soil entering and exiting direction, the material ports are aligned with the feeding port or the discharging port, a first nitrogen purging pipe is connected inside the nitrogen protection partition boxes, and the first nitrogen purging pipe is communicated with the nitrogen protection device and conveys nitrogen to the inside of the nitrogen protection partition boxes.
3. The on-vehicle van-type continuous microwave solid soil waste treatment equipment as claimed in claim 1, wherein a first oxygen sensor is connected in the reaction bin, the first oxygen sensor is electrically connected with the soil treatment device, the soil treatment device is electrically connected with the nitrogen protection device, and the soil treatment device controls the nitrogen conveying amount of the nitrogen protection device according to the oxygen content monitored by the first oxygen sensor.
4. The vehicle-mounted van-type continuous microwave soil solid waste treatment equipment as claimed in claim 1, wherein the nitrogen protection device comprises at least one group of nitrogen generators, one end of the nitrogen discharge pipe is communicated with a nitrogen output end of the nitrogen generator, the other end of the nitrogen discharge pipe is communicated with the reaction bin, and the reaction bin is in a positive pressure state in the process of conveying nitrogen.
5. The on-board compartment-type continuous microwave soil solid waste treatment device according to claim 4, wherein the nitrogen protection device further comprises a power supply in conductive connection with the nitrogen generator, wherein the power supply is suitable for supplying power to the nitrogen generator and can be charged and discharged.
6. The vehicle-mounted van-type continuous microwave solid soil waste treatment equipment as claimed in claim 2, wherein second oxygen sensors are respectively distributed at the feed inlet and the discharge outlet, the second oxygen sensors are used for monitoring oxygen contents at the feed inlet and the discharge outlet, the second oxygen sensors are electrically connected with the soil treatment device, and the soil treatment device controls nitrogen conveying amount of the nitrogen protection device according to the oxygen contents monitored by the second oxygen sensors.
7. The vehicle-mounted van-type continuous microwave soil solid waste treatment equipment as claimed in claim 1, wherein a rotating shaft is rotatably connected to the inner wall of the reaction bin, the rotating shaft is connected with a blowing rod with a hollow structure, a driver for driving the rotating shaft to rotate is arranged on the inner wall of the reaction bin, the power output end of the driver is connected with the rotating shaft, the blowing rod swings in a fan shape, the swinging surface of the blowing rod is in a vertical plane, the blowing rod is connected with a second nitrogen blowing pipe, and the second nitrogen blowing pipe is communicated with the nitrogen protection device and blows nitrogen in the fan shape towards the inside of the reaction bin by means of the swinging of the blowing rod.
8. The vehicle-mounted van-type continuous microwave solid soil waste treatment equipment according to claim 7, wherein an arc-shaped slide rail is connected to the inner wall of the reaction bin, a slide block is connected to the middle of the purging rod, the slide block is slidably connected to the arc-shaped slide rail, and the purging rod is connected with a limiting piece which is suitable for abutting against the arc-shaped slide rail.
9. The on-vehicle van-type continuous microwave solid soil waste treatment equipment as claimed in claim 7, wherein one end of the purging rod is connected with the rotating shaft, the other end of the purging rod is a free end, the purging rod is provided with a penetrating port near the rotating shaft, the free end of the purging rod is provided with a penetrating port, one end of the second nitrogen purging pipe penetrates through the penetrating port and penetrates out of the penetrating port, and a nitrogen output end of the second nitrogen purging pipe is connected with an air nozzle which is suitable for conveying nitrogen into the reaction bin.
10. The on-vehicle van-type continuous microwave solid soil waste treatment equipment according to claim 7, wherein the purging rod is a telescopic member and has a degree of freedom of being telescopic towards the middle of the reaction bin.
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