CN110523699B - Process and equipment for refining RDF in mixed garbage - Google Patents
Process and equipment for refining RDF in mixed garbage Download PDFInfo
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- CN110523699B CN110523699B CN201910739194.XA CN201910739194A CN110523699B CN 110523699 B CN110523699 B CN 110523699B CN 201910739194 A CN201910739194 A CN 201910739194A CN 110523699 B CN110523699 B CN 110523699B
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- rdf
- cleaning equipment
- shell
- main shaft
- water
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/01—Selective separation of solid materials carried by, or dispersed in, gas currents using gravity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/022—Cleaning travelling work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/06—Cleaning involving contact with liquid using perforated drums in which the article or material is placed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/102—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration with means for agitating the liquid
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Processing Of Solid Wastes (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a process for refining RDF in mixed garbage, which relates to the related technical field of garbage treatment and comprises six steps. The invention also discloses equipment for refining RDF in the mixed garbage, which comprises primary cleaning equipment, secondary cleaning equipment and a conveying belt, wherein the primary cleaning equipment and the secondary cleaning equipment have the same structure, the primary cleaning equipment consists of a supporting frame and a shell, the left side of the top of the shell is fixedly connected with a feed inlet, and the right end of the bottom of the shell is provided with a discharge end. According to the invention, the washing process water is added on the main shaft, so that the RDF washing efficiency is improved, the inorganic fragile materials and the perishable organic matters in the materials are washed cleanly through two-stage washing, the RDF is deeply dehydrated, the metals and the RDF are scattered, the non-RDF heavy objects can be completely removed through the subsequent air separation, the RDF low-cost refining is realized, and the technical route is expanded for comprehensive recycling of garbage.
Description
Technical Field
The invention relates to the technical field of garbage disposal, in particular to a process and equipment for refining RDF in mixed garbage.
Background
The mixed garbage comprises resident household garbage, bazaar trade and business garbage, public place garbage, street cleaning garbage, enterprise garbage and the like.
The garbage derived fuel which is extracted and separated by screening, crushing and RDF is still mixed with inorganic inert substances, metals and perishable organic substances, and has high moisture content and great fluctuation. Wherein the metal seriously threatens the continuous stable operation of the feeding and discharging system of the pyrolysis furnace, inorganic inert substances reduce the quality of pyrolytic carbon, water can increase the energy consumption and the pyrolytic water output of RDF pyrolysis, and the treatment of the pyrolytic water causes the rise of garbage recycling cost. The metal and inorganic inert substances in RDF are removed through the refining of RDF, so that the moisture is reduced and kept stable, and the RDF becomes a truly standard product, and has great significance for both the garbage disposal industry and the pyrolysis industry.
Therefore, it is necessary to provide a process and apparatus for refining RDF in mixed waste to solve the above problems.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a process and equipment for refining RDF in mixed garbage, and solves the problems in the prior art.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme:
a process for refining RDF in mixed garbage comprises the following steps:
a: firstly, throwing flocculent crude RDF to be cleaned into first-stage cleaning equipment from a feed inlet, and pushing materials to axially move while rotating at high speed under the action of a main shaft and blades in the first-stage cleaning equipment;
b: circulating water is used as process water for RDF cleaning, and water is sprayed in the material movement process through the hollow main shaft and the water outlet holes on the main shaft, so that the materials are kept in an easily separated state;
c: by utilizing high-speed rotation of materials, under the action of centrifugal force, the water and the perishable organic matters and solid impurities attached to RDF are thrown out of the sieve barrel at high speed, and centrifugal dehydration of RDF is realized in the process;
d: RDF is discharged from the discharge end at the tail end of the primary cleaning equipment and is conveyed into the secondary cleaning equipment through a conveying belt, the RDF is further cleaned and separated, and finally the RDF water is discharged from the discharge end at the tail end of the secondary cleaning equipment and is reduced to about 20%;
e: according to the characteristic that RDF and individual large-particle heavy objects mingled in RDF have large difference, removing non-RDF heavy objects in RDF by utilizing wind power, further realizing RDF dehydration, and reducing RDF water to about 15%;
f: eventually making RDF a canonical product.
Optionally, the rotational speeds of the primary cleaning equipment and the secondary cleaning equipment are 800-1500r/min, and the RDF secondary cleaning is followed by wind power winnowing equipment.
The device for refining RDF in the mixed garbage comprises primary cleaning equipment, secondary cleaning equipment and a conveying belt, wherein the primary cleaning equipment and the secondary cleaning equipment are identical in structure, the primary cleaning equipment consists of a supporting frame and a shell, a feed inlet is fixedly connected to the left side of the top of the shell, and a discharge end is arranged at the right end of the bottom of the shell;
the outer side of the shell is provided with a motor, and the middle part of the left side of the shell is movably provided with a central shaft;
the novel sieve tube is characterized in that a main shaft is movably mounted in the middle of the inside of the shell, the right end of the main shaft is fixedly connected with a water inlet pipe, a plurality of water outlet holes are formed in the main shaft, a plurality of blades which are uniformly distributed are fixedly connected to the outer surface of the main shaft, a sieve barrel is sleeved on the outer side of the main shaft, the inner side wall of the shell is fixedly connected with the end face of the sieve barrel, a blanking port which corresponds to the feeding port is formed in the top wall of the sieve barrel, a fixed block which is arranged in a circumferential array is fixedly mounted on the outer side of the sieve barrel, and a funnel is fixedly mounted in the middle of the bottom of the shell.
Optionally, the support frame is fixedly installed at the bottom of the shell;
the motor is fixedly arranged on the supporting frame.
Optionally, two ends of the conveying belt are respectively connected with a discharge end on the primary cleaning equipment and a feed inlet on the secondary cleaning equipment.
Optionally, the output end of the motor is in belt transmission connection with the central shaft.
Optionally, the left end of the main shaft is fixedly connected with the central shaft, and the right end of the main shaft penetrates through the right side wall of the shell.
Optionally, the main shaft is hollow;
the water outlets are uniformly distributed.
Optionally, the blade is inclined;
the sieve barrel is fixedly connected with the inner wall of the shell through a fixed block.
Optionally, the left side bottom fixedly connected with drain pipe of funnel, the inside fixed mounting of drain pipe has the filter screen.
(III) beneficial effects
The invention provides a process and equipment for refining RDF in mixed garbage, which have the following beneficial effects:
(1) According to the invention, inorganic brittle materials and perishable organic matters in RDF are removed through two-stage cleaning, so that the moisture of the materials is reduced to about 20%, the metals and RDF are scattered, and the sorting effect of subsequent winnowing is ensured.
(2) According to the invention, the cleaning efficiency of RDF is improved by adding the washing process water on the main shaft, the cleaning of soil on RDF is realized by using as little washing water as possible, the impurity removal and cleaning of RDF are used as pretreatment of air separation, the air separation effect of RDF is ensured, non-RDF heavy objects in RDF are completely removed by air separation, the RDF is deeply dehydrated, the water content is reduced to about 15%, the low-cost refining of RDF is realized, and the technical route for comprehensive recycling of garbage is expanded.
Drawings
FIG. 1 is a process diagram of the present invention;
FIG. 2 is a schematic view of the apparatus of the present invention;
FIG. 3 is a schematic cross-sectional view of the housing of the present invention;
fig. 4 is a schematic side view of the screen drum of the present invention.
In the figure: the device comprises a primary cleaning device 1, a secondary cleaning device 2, a conveying belt 3, a feed inlet 4, a discharge end 5, a supporting frame 6, a motor 7, a drain pipe 8, a main shaft 9, a central shaft 10, a shell 11, a funnel 12, a water inlet pipe 13, blades 14, water outlet holes 15, a sieve barrel 16 and a fixed block 17.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected or detachably connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
According to the invention, as shown in fig. 1-4, a technical scheme is provided:
a process for refining RDF in mixed garbage comprises the following steps:
a: firstly, throwing flocculent crude RDF to be cleaned into first-stage cleaning equipment 1 from a feed inlet 4, and pushing materials to axially move while rotating at high speed under the action of a main shaft 9 and blades 14 in the first-stage cleaning equipment 1;
b: circulating water is used as process water for RDF cleaning, and water is sprayed in the material movement process through the hollow main shaft 9 and the water outlet holes 15 on the main shaft, so that the material is kept in an easily separated state;
c: by utilizing the high-speed rotation of the materials, under the action of centrifugal force, the water and the perishable organic matters and solid impurities attached to RDF are thrown out of the screen drum 16 at a high speed, wherein the solid impurities comprise glass, ceramics, cement and the like, and the RDF is centrifugally dehydrated in the process;
d: RDF is discharged from a discharge end 5 at the tail end of the primary cleaning equipment 1 and is conveyed into the secondary cleaning equipment 2 through a conveying belt 3, the RDF is further cleaned and separated, and finally the RDF is discharged from the discharge end 5 at the tail end of the secondary cleaning equipment 2, wherein the rotating speeds of the primary cleaning equipment 1 and the secondary cleaning equipment 2 are 800-1500r/min, so that a main shaft 9 rotates at a high speed, the RDF is deeply dehydrated, and the RDF water is reduced to about 20%;
e: the RDF secondary cleaning is followed by a wind power winnowing device, according to the characteristic that the difference between RDF and individual large-particle heavy objects mixed in the RDF is large, non-RDF heavy objects in the RDF are removed by wind power, RDF dehydration is further realized, and the RDF water content is reduced to about 15%;
f: eventually making RDF a canonical product.
The utility model provides a refined equipment of RDF in mixed rubbish, including first order cleaning equipment 1, second grade cleaning equipment 2 and conveyer belt 3, first order cleaning equipment 1 and second grade cleaning equipment 2 structure are the same, first order cleaning equipment 1 comprises support frame 6 and casing 11, support frame 6 fixed mounting is in the bottom of casing 11, the top left side fixedly connected with feed inlet 4 of casing 11, discharge end 5 is installed to the bottom right-hand member of casing 11, the both ends of conveyer belt 3 are connected respectively discharge end 5 on first order cleaning equipment 1 and feed inlet 4 on second grade cleaning equipment 2, conveyer belt 3 plays the effect of conveying the transport material;
the outer side of the shell 11 is provided with a motor 7, the motor 7 is fixedly arranged on the support frame 6, the middle part of the left side of the shell 11 is movably provided with a central shaft 10, and the output end of the motor 7 is in belt transmission connection with the central shaft 10;
the inside middle movable mounting of casing 11 has main shaft 9, the left end and the center pin 10 fixed connection of main shaft 9, the right-hand member of main shaft 9 runs through the right side wall of casing 11, the right-hand member fixedly connected with inlet tube 13 of main shaft 9 sets up to the cavity form, a plurality of apopores 15 have been seted up on the main shaft 9, a plurality of apopores 15 are evenly arranged, through the cooperation use between inlet tube 13, main shaft 9 and the apopores 15, the process water is through cavity form main shaft 9 and apopores 15, spout water on the material of advancing along with the blade high-speed rotation, the surface fixed connection of main shaft 9 has evenly distributed's a plurality of blades 14, blade 14 is the slope form, drive blade 14 through main shaft 9 rotates for sieve barrel 16 inside forms the spiral transmission chamber, blade 14 promotes the material and rotates and do axial motion, sieve barrel 16 has been cup jointed in the outside of main shaft 9, the terminal surface fixed connection of sieve barrel 16, the roof of sieve barrel 16 has been seted up with the roof of feed inlet 4 corresponds the mouth that sets up, the outside fixed mounting of sieve barrel 16 has the fixed block 17 that is the circumference array arrangement, sieve barrel 16 passes through fixed block 17 and the inside of the fixed hopper 8 of the inside of casing 11 is connected with the fixed hopper 8 of the inside of casing 12, the fixed mounting of the bottom of the filter screen 8.
To sum up: the cleaning efficiency of RDF is improved by adding washing process water on the main shaft, the cleaning of soil on the RDF is realized by using as little washing water as possible, the inorganic fragile materials and perishable organic matters in the RDF are completely removed by two-stage cleaning, the RDF is subjected to impurity removal and cleaning as pretreatment of winnowing, the winnowing effect of the RDF is ensured, the RDF is refined at low cost, and the technical route is expanded for comprehensive recycling of garbage.
It should be noted that, in the present invention, unless explicitly specified and limited otherwise, a first feature may be "on" or "off" a second feature, either by direct contact of the first and second features or by indirect contact of the first and second features via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (8)
1. The RDF refining process for the mixed garbage is characterized by comprising the following steps of:
a: firstly, throwing flocculent crude RDF to be cleaned into first-stage cleaning equipment (1) from a feed inlet (4), and pushing materials to axially move while rotating at high speed under the action of a main shaft (9) and blades (14) in the first-stage cleaning equipment (1);
b: circulating water is used as process water for RDF cleaning, and water is sprayed in the material movement process through the hollow main shaft (9) and the water outlet holes (15) on the main shaft, so that the materials are kept in an easily separated state;
c: by utilizing high-speed rotation of the materials, under the action of centrifugal force, the water and the perishable organic matters and solid impurities attached to RDF are thrown out of a screen drum (16) at high speed, and the centrifugal dehydration of RDF is realized in the process;
d: RDF is discharged from a discharge end (5) at the tail end of the primary cleaning equipment (1) and is conveyed into the secondary cleaning equipment (2) through a conveying belt (3), the RDF is further cleaned and separated, and finally the RDF is discharged from the discharge end (5) at the tail end of the secondary cleaning equipment (2) to reduce the RDF water content to about 20%;
e: according to the characteristic that the difference between RDF and individual large-particle heavy objects mixed in the RDF is large, non-RDF heavy objects in the RDF are removed by utilizing wind power, RDF dehydration is further realized, RDF is enabled to be inorganic matter-free mixed, and RDF water is reduced to about 15%;
f: finally, RDF is made into a standard product;
the rotational speeds of the primary cleaning equipment (1) and the secondary cleaning equipment (2) are 800-1500r/min, and the secondary cleaning equipment (2) is connected with a wind power winnowing device;
the device for the RDF refining process in the mixed garbage comprises a primary cleaning device (1), a secondary cleaning device (2) and a conveying belt (3), and is characterized in that: the primary cleaning equipment (1) and the secondary cleaning equipment (2) are identical in structure, the primary cleaning equipment (1) is composed of a supporting frame (6) and a shell (11), a feed inlet (4) is fixedly connected to the left side of the top of the shell (11), and a discharge end (5) is arranged at the right end of the bottom of the shell (11);
the outer side of the shell (11) is provided with a motor (7), and the middle part of the left side of the shell (11) is movably provided with a central shaft (10);
the novel sieve tube is characterized in that a main shaft (9) is movably mounted in the middle of the inside of the shell (11), the right end of the main shaft (9) is fixedly connected with a water inlet pipe (13), a plurality of water outlet holes (15) are formed in the main shaft (9), a plurality of evenly distributed blades (14) are fixedly connected to the outer surface of the main shaft (9), a sieve barrel (16) is sleeved on the outer side of the main shaft (9), the inner side wall of the shell (11) is fixedly connected with the end face of the sieve barrel (16), a blanking port corresponding to the feeding port (4) is formed in the top wall of the sieve barrel (16), a fixed block (17) which is arranged in a circumferential array is fixedly mounted on the outer side of the sieve barrel (16), and a funnel (12) is fixedly mounted in the middle of the bottom of the shell (11).
2. A process for the purification of RDF from mixed waste according to claim 1, wherein,
the support frame (6) is fixedly arranged at the bottom of the shell (11);
the motor (7) is fixedly arranged on the supporting frame (6).
3. A process for the purification of RDF from mixed waste according to claim 1, wherein,
two ends of the conveying belt (3) are respectively connected with a discharge end (5) on the primary cleaning equipment (1) and a feed inlet (4) on the secondary cleaning equipment (2).
4. A process for the purification of RDF from mixed waste according to claim 1, wherein,
the output end of the motor (7) is in belt transmission connection with the central shaft (10).
5. A process for the purification of RDF from mixed waste according to claim 1, wherein,
the left end of the main shaft (9) is fixedly connected with the central shaft (10), and the right end of the main shaft (9) penetrates through the right side wall of the shell (11).
6. A process for the purification of RDF from mixed waste according to claim 1, wherein,
the main shaft (9) is hollow;
the water outlet holes (15) are uniformly distributed.
7. A process for the purification of RDF from mixed waste according to claim 1, wherein,
the blade (14) is inclined;
the screen barrel (16) is fixedly connected with the inner wall of the shell (11) through a fixed block (17).
8. The process for refining RDF in mixed garbage according to claim 1, wherein a drain pipe (8) is fixedly connected to the bottom of the left side of the funnel (12), and a filter screen is fixedly arranged in the drain pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910739194.XA CN110523699B (en) | 2019-08-12 | 2019-08-12 | Process and equipment for refining RDF in mixed garbage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910739194.XA CN110523699B (en) | 2019-08-12 | 2019-08-12 | Process and equipment for refining RDF in mixed garbage |
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| CN110523699A CN110523699A (en) | 2019-12-03 |
| CN110523699B true CN110523699B (en) | 2023-08-04 |
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| CN201910739194.XA Active CN110523699B (en) | 2019-08-12 | 2019-08-12 | Process and equipment for refining RDF in mixed garbage |
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| CN112371622A (en) * | 2020-10-25 | 2021-02-19 | 赵鹏飞 | Mechanical equipment for preparing regenerated sand stone material by utilizing building garbage particles |
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| CN110523699A (en) | 2019-12-03 |
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