CN218168176U - Solid waste feeding system - Google Patents
Solid waste feeding system Download PDFInfo
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- CN218168176U CN218168176U CN202222457230.3U CN202222457230U CN218168176U CN 218168176 U CN218168176 U CN 218168176U CN 202222457230 U CN202222457230 U CN 202222457230U CN 218168176 U CN218168176 U CN 218168176U
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- hopper
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Abstract
The utility model discloses a solid waste charge-in system. The solid waste feeding system comprises a pretreatment unit and a feeding unit, wherein the pretreatment unit is sequentially provided with a chopper, a mixer and an extrusion molding machine from top to bottom; the chopper is connected with the mixer in a skid-mounted manner through a first lock hopper, the mixer is connected with the extrusion molding machine in a skid-mounted manner through a second lock hopper, the first lock hopper and the second lock hopper are respectively provided with a first screen and a second screen, and the first screen and the second screen are used for vibrating and screening passing particles and then feeding the particles into downstream equipment; the feeding unit is sequentially provided with a conveyor, a feeding hopper and an unloader; the outlet of the extrusion molding machine is connected with the inlet of the conveyor, the outlet of the conveyor is connected with the feed inlet of the feed hopper, and the discharge outlet of the feed hopper is connected with the discharger; the feed hopper is provided with a shielding gas inlet. The utility model discloses a but the automated control solid waste's of system input speed, and can not take place to block up and arouse the safety problem.
Description
Technical Field
The utility model relates to a solid waste charge-in system.
Background
With the development of society and industry, the energy demand is increased rapidly, the development of nuclear energy is also advanced rapidly, and the problem of volume reduction treatment of radioactive waste is in urgent need of solution. The fluidized bed steam reforming technology can effectively treat radioactive waste resin, dry and miscellaneous solid waste, chemical waste liquid, waste oil and organic pollutant solvent (TPB). However, the solid waste may be clogged in a pipe during the feeding process, thereby causing a safety problem, and the solid waste may be oxidized, resulting in a defect that the efficiency of the solid waste is lowered in the subsequent reforming reaction.
SUMMERY OF THE UTILITY MODEL
The method aims to solve the problems that in the feeding process of the prior art, solid waste blocks a pipeline to cause safety problem, and the solid waste is oxidized to cause the efficiency of the solid waste to be reduced in the subsequent reforming reaction. In order to satisfy the demand of steam reforming for the feeding of inactive solid waste, the utility model provides a solid waste feeding system. The system of the utility model can automatically control the feeding speed of the solid waste, and can not cause the safety problem due to blockage; in addition, adopt the utility model discloses a system can provide the even solid waste granule of size for the reformer to improve the reforming efficiency of solid waste in the follow-up treatment process.
The utility model discloses a following technical scheme solves above-mentioned technical problem.
The utility model provides a solid waste feeding system, which comprises a pretreatment unit and a feeding unit,
the pretreatment unit is sequentially provided with a chopper, a mixer and an extrusion molding machine from top to bottom; the chopper is connected with the mixing machine in a skid-mounted manner through a first lock hopper, the mixing machine is connected with the extrusion forming machine in a skid-mounted manner through a second lock hopper, the first lock hopper and the second lock hopper are respectively provided with a first screen and a second screen, and the first screen and the second screen are used for vibrating and screening passing particles and then feeding the particles into downstream equipment;
the feeding unit is sequentially provided with a conveyor, a feeding hopper and a discharger; the outlet of the extrusion molding machine is connected with the inlet of the conveyor, the outlet of the conveyor is connected with the feed inlet of the feed hopper, and the discharge outlet of the feed hopper is connected with the discharger; the feeder hopper is provided with a shielding gas inlet.
The utility model discloses in, sled dress formula indicates to integrate functional component on a whole base, an integrated mode that can the integral erection, remove.
In the utility model, preferably, the solid waste feeding system further comprises an electric hoist; the electric block is arranged at the top of the factory building and used for hoisting solid wastes to the chopper.
The utility model discloses in, preferably, the mincer is equipped with the comminution device for carry out coarse comminution with the material, obtain the material of large granule.
In the utility model, preferably, the first moving bottom hopper is provided with a first screen; more preferably, the aperture of the first screen is 0.5 mm-2 mm.
The utility model discloses in, preferably, the mixing machine is equipped with breaker for carry out the thin comminution with the material, obtain the material of tiny granule.
In the utility model, preferably, the second moving bottom hopper is provided with a second screen; more preferably, the aperture of the second screen is 0.5 mm-2 mm.
Wherein after coarse chopping by the chopping device and fine chopping by the crushing device, the particles obtained by mixing are more uniform.
Wherein, preferably, the aperture of the second screen is smaller than that of the first screen.
The utility model discloses in, extrusion molding machine adopts the design of granulation feed integration, to the solid waste extrusion granulation formation high density granule of broken back and be sent to the steam reforming furnace.
The utility model discloses in, preferably, extrusion molding machine is equipped with cooling cycle device, guarantees that material ejection of compact temperature meets the demands.
In the utility model, preferably, the first lock hopper and the second lock hopper are both provided with a weighing scale, and more preferably, the weighing scale is a piezoelectric crystal sensor weighing scale; the weighing scale can measure the weight of materials in the first lock hopper and the second lock hopper, and sends signals through the signal controller to control the rotating speed of the chopping device and the mixing device, so that the material blanking amount or the blanking speed is controlled, and the automatic raw material preparation is realized.
The utility model discloses in, preferably, the below of extrusion molding machine is equipped with operation maintenance platform.
In the utility model, preferably, the conveyor is a spiral feeding conveyor for rotationally inputting the material into the feeding hopper; the feed hopper serves for temporary storage.
The utility model discloses in, preferably, the tripper is the star tripper, and it has better leakproofness, is convenient for carry the material.
In a preferred embodiment, said feed hopper, said star discharger and said feed screw conveyor are used to jointly control the rate of discharge.
In the utility model, preferably, the feed hopper comprises a cylinder and a cone; the cylinder is located above the cone.
Preferably, the feed inlet is formed in the center of the top of the cylinder, and the discharge outlet is formed in the bottom of the cone.
Wherein, preferably, the top of cylinder is equipped with reserve mouth, level gauge mouth and drain.
Preferably, the cylinder is provided with a manhole, a thermometer port, an ear type support and a grounding plate; the ear type support is arranged on the upper portion of the outer wall of the cylinder, and the grounding plate is arranged in the middle of the cylinder.
Wherein, preferably, the outer wall of the cone is provided with a protective gas inlet; the protective gas inlet is connected with a gas supply device.
Wherein, preferably, the angle of the bottom opening of the cone is 60 ℃.
The utility model discloses in, preferably, the outside of first false bottom hopper and second false bottom hopper all sets up the protection casing.
The utility model discloses in, preferably, use solid waste feed system go on solid waste feed process includes following step:
s1: adding the solid waste into a pretreatment unit, and sequentially carrying out crushing, screening and extrusion forming treatment to obtain solid waste particles; the density of the solid waste particles is 1-2 kg/L;
s2: and introducing protective gas into the feed hopper, and adding the solid waste particles into the reactor sequentially through the conveyor, the feed hopper and the discharger.
In the utility model, preferably, the solid waste is obtained by sorting; the purpose of the sorting is to remove metal pieces from the solid waste that are not conducive to cutting and pressing.
In the present invention, preferably, the solid waste includes one or more of rubber, cloth, plastic, paper and wood.
In step S1, preferably, the crushing and screening operations sequentially include first crushing and first screening, and second crushing and second screening.
Wherein, preferably, the first crushing is performed in the shredder.
Wherein, preferably, the first sieving is performed using the first sieve; the particles that pass through the first screen enter the mixer and the particles that do not pass through the first screen return to the chopper for continued chopping.
Wherein, preferably, the second crushing is performed in the mixer.
Wherein, preferably, the second sieving is performed using the second screen; and the particles passing through the second screen enter the extrusion molding machine, and the particles not passing through the second screen return to the mixer to be continuously crushed.
In step S1, preferably, the temperature of the solid waste particles is less than 120 ℃.
In step S1, preferably, the size of the solid waste particles is less than 20mm.
In step S2, preferably, the discharging speed of the discharger is less than 300kg/h.
In step S2, preferably, the pressure of the feed hopper is normal pressure.
In step S2, preferably, the protective gas is nitrogen, the protective gas can fluidize the material to prevent blockage, and the protective gas can cool the solid waste, so as to prevent the surface of the solid waste from being oxidized, which results in a reduction in reforming efficiency.
In step S2, the particle size of the particles entering the reactor is preferably less than or equal to 7mm.
On the basis of the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.
The reagent and the raw material used in the utility model are available on the market.
The utility model discloses an actively advance the effect and lie in:
1. the utility model discloses an among the solid waste charge-in system, adopt sled dress formula design, conveniently change and overhaul to make the compact structure of preprocessing unit, reduce the cost of transportation and relevant corollary equipment and instrument.
2. Use the charge-in system of this application, carry out the two-stage breakage to solid waste, the first order is the preliminary shearing of mincer, and the second level is that the shearing of blender is smashed and the misce bene, could extrude the target size from this, has promoted crushing efficiency and mixing efficiency, provides the even solid waste granule of size for the reformer.
3. The utility model discloses a solid waste feed system does benefit to and operates under the condition of negative pressure to reduce dust pollution.
4. The utility model discloses an among the solid waste charge-in system, through setting up the protective gas entry, can make the material fluidization prevent to block up to the protective gas can be cooled down solid waste particle, thereby prevents solid waste particle surface oxidation, leads to reforming efficiency to reduce.
Drawings
Fig. 1 is a structural view of a solid waste feeding system of example 1.
Fig. 2 is a schematic structural diagram of a pretreatment unit of embodiment 1.
FIG. 3 is a structural view of a hopper in example 1.
Description of the reference numerals
A pretreatment unit A; a feed unit B;
a chopper 1; a shredding device 101;
a mixer 2; a crushing device 201;
an extrusion molding machine 3; a cooling circulation device 301;
a first lock hopper 4; a second lock hopper 5; a first screen 6; a second screen 7; a helical feed conveyor 8;
a feed hopper 9; DNAW feed port 901; DNAW discharge 902; a cylinder 903; a cone 904; a spare port 905; a level gauge port 906; a vent 907; a manhole 908; a thermometer port 909; an ear mount 910; a ground plate 911; a shielding gas inlet 912;
a discharger 10; an electric hoist 11; a protective cover 12; an air supply device 13; a steam reformer 14.
Detailed Description
The present invention is further illustrated by way of the following examples, which are not intended to limit the scope of the invention. The experimental methods without specifying specific conditions in the following examples were selected according to the conventional methods and conditions, or according to the commercial instructions.
Example 1
Fig. 1 is a structural view of a solid waste feeding system of the present embodiment, which includes a pretreatment unit a and a feeding unit B.
Fig. 2 is a schematic structural diagram of the preprocessing unit a of the present embodiment. The pretreatment unit A is sequentially provided with a chopper 1, a mixer 2, an extrusion molding machine 3 and an electric hoist 11 from top to bottom. The electric hoist 11 is installed at the top of the factory building and used for hoisting the solid waste to the shredder 1. The shredder 1 is provided with a shredding means 101 for coarsely shredding the material to obtain a large-grained material. The mixer 2 is provided with a crushing device 201 for finely chopping the material to obtain a small particle material. The chopper 1 is connected with the mixer 2 in a skid-mounted manner through a first lock hopper 4, the mixer 2 is connected with the extrusion molding machine 3 in a skid-mounted manner through a second lock hopper 5, the first lock hopper 4 and the second lock hopper 5 are respectively provided with a first screen 6 and a second screen 7, the first screen 6 and the second screen 7 are used for vibrating and screening passing particles and then feeding the particles into downstream equipment, and the aperture of the first screen 6 is 0.5-2 mm; the aperture of the second screen 7 is 0.5 mm-2 mm; the aperture of the second screen 7 is smaller than that of the first screen 6; after coarse chopping by the chopping device and fine chopping by the crushing device, the particles obtained by mixing are more uniform. The extrusion molding machine 3 adopts a granulation and feeding integrated design, and performs extrusion granulation on the crushed solid waste to form high-density particles which are sent to the steam reforming furnace 14. The extrusion molding machine 3 is provided with a cooling circulation device 301 to ensure that the material discharging temperature meets the requirements. First lock hopper 4 and second lock hopper 5 all are equipped with piezoelectric crystal sensor weigher, and the weight of material in this weigher measurable first lock hopper 4 and the second lock hopper 5, through the rotational speed of signal controller signals control comminution device 101 and mixing arrangement 201 to control material unloading volume or unloading speed, realize automatic raw materials preparation. An operation and maintenance platform is arranged below the extrusion molding machine 3. The exterior of each of the first lock hopper 4 and the second lock hopper 5 is provided with a protective cover 12.
The feeding unit B is sequentially provided with a spiral feeding conveyor 8, a feeding hopper 9 and a star-shaped discharger 10; the outlet of the extrusion molding machine 3 is connected with the inlet of the spiral feeding conveyor 8, the outlet of the spiral feeding conveyor 8 is connected with a DNAW feeding hole 901 at the top of the feeding hopper 9, and a DNAW discharging hole 902 at the bottom of the feeding hopper 9 is connected with a discharger 10; the screw feed conveyor 8 is used for rotary conveying the material into a feed hopper 9, the feed hopper 9 serving as a temporary storage. The star-shaped discharger 10 has better sealing performance and is convenient for conveying materials. A screw feed conveyor 8, a feed hopper 9 and a star discharger 10 are used to jointly control the discharge rate.
Fig. 3 is a structural view of the hopper 9 of the present embodiment. The feed hopper 9 comprises a cylinder 903 and a cone 904, the cylinder 903 being located above the cone 904. DNAW feed inlet 901 is arranged at the top center of cylinder 903, and DNAW discharge outlet 902 is arranged at the bottom of cone 904. The top of the feed hopper 9 is provided with a standby port 905, a level gauge port 906 and a vent port 907. The cylinder 903 is provided with a manhole 908, a thermometer port 909, an ear type support 910 and a grounding plate 911; the ear mount 910 is provided on the upper portion of the outer wall of the cylinder 903, and the ground plate 911 is provided in the middle of the cylinder 903. And a protective gas inlet 912 is arranged on the outer wall of the cone 904, and the protective gas inlet 912 is connected with the gas supply device 13. The opening angle at the bottom of cone 904 is 60 deg.c.
Example 2
This example is a solid waste feed process, the solid waste comprising one or more of rubber, cloth, plastic, paper, and wood; the solid waste feeding process uses the solid waste feeding system of example 1, comprising the steps of:
s1: adding the sorted solid waste into a pretreatment unit A through an electric hoist 11, and sequentially carrying out primary crushing, primary screening, secondary crushing, secondary screening and extrusion forming treatment to obtain solid waste particles; the density of the solid waste particles is 1-2 kg/L, the temperature is less than 120 ℃, and the size is less than 20mm;
s2: introducing protective gas into a feed hopper 9, and adding solid waste particles into a reactor sequentially through a spiral feed conveyor 8, the feed hopper 9 and a discharger 10, wherein the particle size of the particles entering the reactor is less than or equal to 7mm; the discharging speed of the discharger 10 is less than 300kg/h, the pressure of the feed hopper 9 is normal pressure, and the protective gas is nitrogen.
Claims (6)
1. A solid waste feeding system, characterized in that it comprises a pre-treatment unit and a feeding unit,
the pretreatment unit is sequentially provided with a chopper, a mixer and an extrusion molding machine from top to bottom; the chopper is connected with the mixing machine in a skid-mounted manner through a first lock hopper, the mixing machine is connected with the extrusion forming machine in a skid-mounted manner through a second lock hopper, the first lock hopper and the second lock hopper are respectively provided with a first screen and a second screen, and the first screen and the second screen are used for vibrating and screening passing particles and then feeding the particles into downstream equipment;
the feeding unit is sequentially provided with a conveyor, a feeding hopper and a discharger; the outlet of the extrusion molding machine is connected with the inlet of the conveyor, the outlet of the conveyor is connected with the feed inlet of the feed hopper, and the discharge outlet of the feed hopper is connected with the discharger; the feeder hopper is provided with a shielding gas inlet.
2. The solid waste feeding system of claim 1, further comprising an electric hoist for hoisting the solid waste to the shredder;
and/or the chopper is provided with a chopping device for coarsely chopping the material;
and/or the first lock hopper is provided with a first screen;
and/or the mixer is provided with a crushing device for finely crushing the material;
and/or the second lock hopper is provided with a second screen;
and/or the extrusion forming machine is provided with a cooling circulation device;
and/or the first lock bottom hopper and the second lock bottom hopper are provided with weighing scales;
and/or protective covers are arranged outside the first lock hopper and the second lock hopper.
3. The solid waste feed system of claim 2, wherein the first screen has a pore size of 0.5mm to 2mm;
and/or the aperture of the second screen is 0.5 mm-2 mm;
and/or the pore size of the second screen is smaller than the pore size of the first screen;
and/or the weighing scale is a piezoelectric crystal sensor weighing scale.
4. The solid waste feed system of claim 1, wherein the conveyor is a spiral feed conveyor for rotating material into the feed hopper;
and/or the discharger is a star discharger.
5. The solid waste feeding system of claim 1, wherein the feed hopper comprises a cylinder and a cone; the cylinder is located above the cone.
6. The solid waste feeding system of claim 5, wherein said feeding port is provided at the center of the top of said cylindrical body, and said discharging port is provided at the bottom of said conical body;
and/or a standby port, a level indicator port and a vent port are arranged at the top of the cylinder;
and/or the cylinder is provided with a manhole, a thermometer port, an ear type support, a grounding plate and a liquid level switch;
and/or a protective gas inlet is arranged on the outer wall of the cone; the protective gas inlet is connected with a gas supply device;
and/or the angle of the bottom opening of the cone is 60 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222457230.3U CN218168176U (en) | 2022-09-16 | 2022-09-16 | Solid waste feeding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222457230.3U CN218168176U (en) | 2022-09-16 | 2022-09-16 | Solid waste feeding system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218168176U true CN218168176U (en) | 2022-12-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222457230.3U Active CN218168176U (en) | 2022-09-16 | 2022-09-16 | Solid waste feeding system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218168176U (en) |
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2022
- 2022-09-16 CN CN202222457230.3U patent/CN218168176U/en active Active
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