CN115286206A - Oil sludge pretreatment device - Google Patents
Oil sludge pretreatment device Download PDFInfo
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- CN115286206A CN115286206A CN202210919345.1A CN202210919345A CN115286206A CN 115286206 A CN115286206 A CN 115286206A CN 202210919345 A CN202210919345 A CN 202210919345A CN 115286206 A CN115286206 A CN 115286206A
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- 239000010802 sludge Substances 0.000 title claims abstract description 64
- 238000001125 extrusion Methods 0.000 claims abstract description 44
- 238000003756 stirring Methods 0.000 claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims abstract description 37
- 238000001035 drying Methods 0.000 claims abstract description 25
- 239000000843 powder Substances 0.000 claims description 67
- 238000003860 storage Methods 0.000 claims description 41
- 238000003825 pressing Methods 0.000 claims description 28
- 239000004744 fabric Substances 0.000 claims description 18
- 239000000853 adhesive Substances 0.000 claims description 14
- 230000001070 adhesive effect Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 3
- 230000032258 transport Effects 0.000 claims description 2
- 238000005336 cracking Methods 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000007731 hot pressing Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 84
- 238000000197 pyrolysis Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- 150000001555 benzenes Chemical class 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/20—Agglomeration, binding or encapsulation of solid waste
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
- B09B3/32—Compressing or compacting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
- B09B3/38—Stirring or kneading
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to the technical field of sludge treatment, in particular to a sludge pretreatment device, which comprises a primary drying device for heating sludge, a stirring forming device for stirring and hot-pressing the sludge and a secondary drying device, wherein the primary drying device comprises a spiral roller and a heating pipe wound outside the spiral roller, the sludge is continuously overturned and heated in the spiral roller and moves towards the outlet direction of the spiral roller under the rotating pushing of the spiral roller, the stirring forming device comprises a vertically arranged stirring barrel and a spiral extrusion unit horizontally arranged below the stirring barrel, and the secondary drying device comprises a heating box for accommodating and heating the formed sludge to dry and solidify the formed sludge. The formed oil residues which are convenient to stack are obtained by the pretreatment of the invention, and the formed oil residues are beneficial to uniformly heating the formed oil residues and fully cracking and burning the oil residues because large gaps are formed among the formed oil residues during stacking.
Description
Technical Field
The invention relates to the technical field of oil sludge treatment, in particular to an oil sludge pretreatment device.
Background
The oil sludge refers to a large amount of oil-containing sludge generated in the processes of crude oil exploitation, gathering and transportation, refining, oil-containing sewage treatment and the like. Because the compound contains poisonous and harmful substances such as anthracene, pyrene, phenols, benzene series, heavy metals and the like, the compound is listed as hazardous waste HW08 by the nation, has T toxicity and I inflammability, and is included in the category of hazardous waste management.
In order to protect and improve the ecological environment, the oil sludge needs to be treated to reduce the pollution of the oil sludge to the environment, and the pyrolysis treatment of the oil sludge is one of the common methods for treating the oil sludge, but because the type and the components of the oil sludge are complex, and factors such as impurity components, physical state, water content, oil content and the like in the sludge can influence the smooth proceeding of the subsequent pyrolysis. Therefore, before the oil sludge is subjected to pyrolysis, the pretreatment of the oil sludge is a precondition for ensuring stable, efficient and low-energy operation of subsequent oil sludge treatment.
Conventional fatlute preprocessing device is to fatlute dehydration, the drying, what output after the screening treatment is the graininess dregs of oil of dispersion, and the graininess dregs of oil of this kind of dispersion get into can pile up together in the pyrolysis furnace on next step, when the volume that this kind of dregs of oil piled up together is big a bit more, can lead to the dregs of oil to pile up the dregs of oil granule of center department and be heated inadequately, is unfavorable for the dregs of oil in the pyrolysis furnace by the abundant melting burning schizolysis for it is unsatisfactory to the innocent treatment effect of fatlute.
Disclosure of Invention
The invention aims to provide an oil sludge pretreatment device, which is used for pretreating oil sludge to obtain formed oil residue, is beneficial to full melting, combustion and cracking of the oil residue in a cracking furnace, and improves the harmless treatment effect on the oil sludge.
In order to achieve the above purpose, the basic scheme of the invention is as follows:
an oil sludge pretreatment device comprises a primary drying device, a stirring and forming device and a secondary drying device, wherein the primary drying device is used for heating oil sludge to evaporate and crack water and light components in the oil sludge, the stirring and forming device is used for adding an adhesive into the oil sludge and stirring and carrying out hot press forming to obtain formed oil residues, and the secondary drying device is used for drying and curing the formed oil residues;
the primary drying device comprises a spiral roller and a heating pipe wound outside the spiral roller, the heating pipe and the spiral roller are arranged in a clearance manner, and under the rotating pushing of the spiral roller, the oil sludge is continuously overturned and heated in the spiral roller and moves towards the outlet direction of the spiral roller;
the stirring and forming device comprises a vertically arranged stirring barrel for stirring and mixing the oil residue added with the adhesive and a spiral extrusion unit horizontally arranged below the stirring barrel for extruding and forming the stirred oil residue;
the secondary drying device comprises a heating box for accommodating and heating the formed oil residue to dry and solidify the formed oil residue.
According to the scheme, the oil sludge is heated and dried to enable moisture and light components in the oil sludge to be heated, evaporated and cracked, heavy oil residues are obtained, the columnar formed oil residues are formed through hot press forming and drying treatment on the oil residues to reduce the space occupied by the oil residues, hot melt cracking is conveniently carried out in a follow-up cracking device in a stacking mode, compared with the situation that dispersed granular oil residues are directly stacked in the cracking device to be understood through hot melt, large gaps are formed among the formed oil residues when the formed oil residues are stacked, heating uniformity of all the formed oil residues is facilitated, and the oil residues are sufficiently cracked and combusted.
Further, a conveying plate is arranged below the outlet end of the spiral extrusion unit, the conveying plate is arranged in an inclined manner, the higher end of the conveying plate is close to the outlet end of the spiral extrusion unit, the lower end of the conveying plate is positioned at the inlet of the heating box, a flexible cloth is arranged on the conveying plate, the periphery of the flexible cloth is fixedly connected with the upper surface of the conveying plate in a sealing manner, so that a sealed cavity is formed between the flexible cloth and the conveying plate, a first air hole for communicating the inner space and the outer space of the sealed cavity is formed in the conveying plate, a first one-way air inlet valve allowing air to flow into the sealed cavity through the first air hole is arranged at the first air hole, a movable pressing plate is arranged above the flexible cloth in a covering manner and fixedly connected with the movable pressing plate, one end of the movable pressing plate is hinged to the conveying plate, and the other end of the movable pressing plate is elastically connected with the conveying plate through an elastic piece;
a powder storage box is arranged above the movable pressure plate and corresponds to the movable pressure plate, a bottom plate of the powder storage box is arranged towards the movable pressure plate, a plurality of powder spraying holes are formed in the bottom plate of the powder storage box, an inner cavity of the powder storage box is communicated with the sealing cavity through a first air pipe, and a second one-way valve which only allows gas to flow from the first air pipe to the inner cavity of the powder storage box is arranged on the powder storage box;
the lateral wall setting of spiral drum's exit end carries out the sieve mesh that sieves tiny powder in the fatlute after the drying, and spiral drum's below corresponds to the sieve mesh setting is used for collecting the take-up (stock) pan of the tiny powder through the screening, the take-up (stock) pan passes through the material pipe and transports tiny powder in the take-up (stock) pan extremely the powder storage box sets up only to permit the object on the powder storage box by the material pipe gets into the third check valve of powder storage box inner chamber.
Furthermore, the spiral extrusion unit comprises an extrusion cylinder which is horizontally arranged, the extrusion cylinder is a cylinder body with one end open, the upper side part of the extrusion cylinder is communicated with the bottom outlet of the mixing tank, the open end of the extrusion cylinder is provided with a thin channel with the inner diameter smaller than the inner diameters of other parts of the extrusion cylinder, a spiral pushing rod which is coaxial with the extrusion cylinder is arranged in the inner cavity of the extrusion cylinder outside the thin channel, the closed end of the extrusion cylinder is provided with a driving motor which drives the spiral pushing rod to rotate, and when the driving motor drives the spiral pushing rod to rotate, the spiral pushing rod extrudes oil residues in the extrusion cylinder to the direction of the thin channel.
Further, a first box body used for adding the adhesive into the stirring barrel is arranged on the stirring barrel, and the adhesive is contained in the first box body.
Further, the spiral roller is sleeved with a heat insulation shell which is made of a heat insulation plate and covers all the heating pipes and is used for reducing heat loss of the heating pipes, and the heat insulation shell and the outer wall of the spiral roller are arranged in a clearance mode.
Furthermore, the elastic part is a spring, one end of the spring is fixedly connected with the conveying plate, and the other end of the spring is fixedly connected with the movable pressing plate.
Further, the bottom of the stirring barrel is provided with an electric control valve for controlling the opening or closing of the bottom outlet of the stirring barrel.
Drawings
Fig. 1 is a schematic structural diagram of an oil sludge pretreatment device according to the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is a detail view at the conveyor plate.
Fig. 4 is a schematic structural view of the pressing unit in another view direction.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include:
the device comprises a spiral roller 10, a heating pipe 101, a sieve hole 102, a first motor 103, a stirring barrel 20, a first box body 201, an electric control valve 202, an extrusion cylinder 30, a thin passage 301, a spiral pushing rod 302, a driving motor 303, a conveying plate 40, a flexible cloth 401, a sealing cavity 402, a first air hole 403, a first one-way valve 404, a movable pressing plate 405, a spring 406, a powder storage box 50, a powder spraying hole 501, a first air pipe 502, a second one-way valve 503, a third one-way valve 504, a material receiving tray 60, a material pipe 601, a heat preservation shell 70 and a heating box 80.
As shown in fig. 1, the sludge pretreatment apparatus according to the present embodiment includes a primary drying device that heats sludge to evaporate and crack water and light components in the sludge, an agitation molding device that adds a binder to the sludge and performs agitation and hot press molding to obtain a molded sludge, and a secondary drying device that dries and solidifies the molded sludge.
The primary drying device comprises a spiral drum 10, a driving device and a heating pipe 101, wherein the spiral drum 10 is used for driving the spiral drum 10 to rotate, the spiral drum 10 can be horizontally arranged or obliquely arranged, as shown in fig. 1, in the embodiment, the inclined arrangement of the spiral drum 10 enables the inlet end of the spiral drum 10 to be inclined upwards, a spiral blade is arranged in the spiral drum 10, the spiral drum 10 is supported by a rolling support in a rolling manner so that the spiral drum 10 can rotate freely around the axis of the spiral drum 10, the driving device comprises a first motor 103 arranged on the rolling support, a driving gear is fixedly connected to an output shaft of the first motor 103, a driven gear meshed with the driving gear is fixedly connected to the outer wall of the spiral drum 10, the driven gear is arranged coaxially with the spiral drum 10, and the first motor 103 drives the spiral drum 10 to rotate through gear transmission. The heating pipe 101 is spirally wound on the outer wall of the spiral drum 10, the heating pipe 101 may be electrically heated or the spiral drum 10 is heated by externally connecting a heat source such as high-temperature air, etc. to heat oil sludge in the spiral drum 10, the outer wall of the spiral drum 10 is further sleeved with a heat-insulating housing 70 made of a heat-insulating plate and covering all the heating pipes 101 and used for reducing heat dissipation of the heating pipe 101, the heat-insulating housing 70 may be fixedly connected with other fixing members through a bracket so that the heat-insulating housing 70 is kept stationary, the heating pipe 101 and the heat-insulating housing 70 are both arranged in a gap with the outer wall of the spiral drum 10 so that the spiral drum 10 can freely rotate under the driving of the first motor 103, and when the spiral drum 10 rotates, oil sludge is continuously turned over and heated in the spiral drum 10 and moves towards the outlet direction of the spiral drum 10. Referring to fig. 2, a side wall of the outlet end of the spiral drum 10 is provided with a sieve hole 102 for sieving fine powder in dried sludge, and a receiving tray 60 for collecting the sieved fine powder is provided below the spiral drum 10 corresponding to the sieve hole 102.
Stirring forming device include the agitator 20 and the level of vertical setting set up in the spiral extrusion unit of agitator 20 below, agitator 20 accessible support and ground fixed connection, the upper portion of agitator 20 is the drum, and the lower part of agitator 20 sets up to the cone, and the upper end opening of agitator 20 is located the below of the export of spiral drum 10, the dregs of fat that flows by the export of spiral drum 10 can fall into agitator 20 by the upper end opening of agitator 20 in, and the bottom of agitator 20 sets up the automatically controlled valve 202 that the bottom export of control agitator 20 was opened or was closed, sets up the stirring rod in the agitator 20, can drive through the motor of peripheral hardware the rotatory material to in the agitator 20 of stirring rod stirs, the first box 201 of upper end fixed connection of agitator 20, splendid attire adhesive in the first box 201, and first box 201 bottom sets up and stretches into the shower nozzle of interpolation adhesive in the agitator 20 to the agitator 20.
Referring to fig. 1, 3 and 4, the screw extrusion unit includes a horizontally disposed extrusion barrel 30, the extrusion barrel 30 is a barrel body with an opening at one end, the opening end of the extrusion barrel 30 is an outlet end, the upper side portion of the extrusion barrel 30 is communicated with the outlet at the bottom of the mixing barrel 20, the opening end of the extrusion barrel 30 is provided with a thin passage 301 with an inner diameter smaller than the inner diameter of other portions of the extrusion barrel 30, a screw propulsion rod 302 is disposed in an inner cavity of the extrusion barrel 30 outside the thin passage 301, the screw propulsion rod 302 is coaxially disposed with the extrusion barrel 30, the closed end of the extrusion barrel 30 is fixedly connected with a driving motor 303 for driving the screw propulsion rod 302 to rotate, and when the driving motor 303 drives the screw propulsion rod 302 to rotate, the screw propulsion rod 302 extrudes the oil residue in the extrusion barrel 30 towards the thin passage 301.
The secondary drying device comprises a heating box 80 for accommodating and heating the formed oil residue to dry and solidify the formed oil residue.
As shown in fig. 3, a conveying plate 40 is disposed below an outlet end of the screw extrusion unit, the conveying plate 40 may be fixedly connected to a floor or the like through a bracket, the conveying plate 40 is disposed obliquely, a higher end of the conveying plate 40 is close to the outlet end of the extrusion cylinder 30, a lower end of the conveying plate 40 is located at an inlet of the heating box 80, a flexible cloth 401 is disposed on an upper surface of the conveying plate 40, the flexible cloth 401 is fixedly connected to the upper surface of the conveying plate 40 along a circumference thereof in a sealing manner so as to form a sealed cavity 402 between the flexible cloth 401 and the conveying plate 40, a first air vent 403 for communicating an inner space and an outer space of the sealed cavity 402 is disposed on the conveying plate 40, a first one-way air inlet valve for allowing air to flow into the sealed cavity 402 is disposed at the first air vent 401, a movable pressing plate 405 is disposed above the flexible cloth 401, the upper surface of the middle position of the flexible cloth 401 is fixedly connected to a lower surface of the movable pressing plate 405, specifically, the movable pressing plate 405 is fixedly connected to a spring 406, one end of the movable pressing plate 405 is hinged to the conveying plate 40, and the other end of the movable pressing plate 405 is connected to a spring 406, and the spring 406 of the spring 406 is connected to the movable pressing plate 405.
The powder storage box 50 is arranged above the movable pressing plate 405 and corresponds to the movable pressing plate 405, the position height of the powder storage box 50 is lower than that of the material receiving tray 60, the powder storage box 50 can be fixedly connected with other firmware or fixedly connected with the heating box 80 through a bracket, the bottom plate of the powder storage box 50 is arranged towards the movable pressing plate 405, a plurality of powder spraying holes 501 which are used for communicating the inner space and the outer space of the powder storage box 50 are arranged on the bottom plate of the powder storage box 50, the powder spraying holes 501 point to the direction of the movable pressing plate 405, when powder is contained in the powder storage box 50, the powder in the powder storage box 50 can be sprayed out from the powder spraying holes 501 to the direction of the movable pressing plate 405, the inner cavity of the powder storage box 50 is communicated with the sealed cavity 402 through a first air pipe 502, and a second one-way valve 503 which allows only gas to flow from the first air pipe 502 to the inner cavity of the powder storage box 50 is arranged on the powder storage box 50.
The receiving tray 60 transfers the fine powder in the receiving tray 60 to the powder storage box 50 through the material pipe 601, the upper end of the material pipe 601 is communicated with the receiving tray 60, the lower end of the material pipe 601 is communicated with the powder storage inner cavity, and the powder storage box 50 is provided with a third one-way valve 504 which only allows objects to enter the inner cavity of the powder storage box 50 through the material pipe 601.
The working principle and the beneficial effects of the invention are as follows:
the method comprises the steps of loading oil sludge to be pretreated into a spiral roller 10, introducing a heat source into a heating pipe 101 to enable the heating pipe 101 to generate heat to heat the oil sludge in the spiral roller 10 to enable moisture and light components in the oil sludge to be evaporated and cracked to form oil residues, operating a first motor 103 to drive the spiral roller 10 to rotate slowly to enable the oil sludge to be turned over and heated continuously in the spiral roller 10 and move towards the outlet direction of the spiral roller 10, enabling dry fine powder in the oil sludge to fall through sieve holes 102 to enter a material receiving tray 60 and to be sent into a powder storage box 50 through a material pipe 601, and enabling the fine powder entering the storage box 50 not to fall out through the powder spraying holes 501 automatically due to the fact that the diameter of the powder spraying holes 501 is small.
The heated oil residue is pushed by the rotation of the spiral roller 10 to fall into the stirring barrel 20 from the outlet end of the spiral roller 10, at the moment, the electric control valve 202 is controlled to close the bottom outlet of the stirring barrel 20, when all the oil sludge falls into the stirring barrel 20, a certain amount of adhesive in the first box 201 is added into the stirring barrel 20 according to the proportion, an external motor is operated to drive the stirring rod to rotate to stir the oil residue in the stirring barrel 20 so that the adhesive and the oil residue are fully mixed, and the electric control valve 202 is controlled to open the bottom outlet of the stirring barrel 20 so that the oil residue mixed with the adhesive falls into the extrusion barrel 30; the driving motor 303 is operated to drive the spiral pushing rod 302 to rotate to extrude the oil residues out of the thin channel 301 of the extruding cylinder 30 to form cylindrical formed oil residues, the extruded cylindrical formed oil residues are cut off at the extruding opening of the extruding cylinder 30 to enable the formed oil residues to fall on the movable pressing plate 405, the movable pressing plate 405 presses the spring 406 and the flexible cloth 401 downwards under the gravity of the formed oil residues to reduce the space of the sealing cavity 402, gas is pressed into the powder storage box 50 through the first gas pipe 502 to increase the pressure of the inner cavity of the powder storage box 50, the increased pressure of the inner cavity of the powder storage box 50 forces the gas in the powder storage box 50 to be sprayed outwards from the powder spraying hole 501 to spray fine powder to the formed oil residues which roll through the movable pressing plate 405 through the powder spraying hole 501, so that the outer surface of the formed oil residues is coated with a layer of fine powder, the fine powder coated on the outer surface of the formed oil residues covers the possible adhesive on the outer surface of the formed oil residues, the formed oil residues can be effectively prevented from being adhered together, and the formed oil residues in the heating box 80 can be further prevented from being adhered together to form a large integral picking up and stacking and cracking combustion furnace after being heated, dried and solidified.
When the formed oil sludge leaves the movable pressing plate 405, the movable pressing plate 405 drives the flexible cloth 401 to move upwards under the elastic force of the spring 406, so that the space of the sealing cavity 402 is increased, at the moment, the second one-way valve 503 prevents the gas and the powder in the powder storage box 50 from entering the sealing cavity 402, and the external air enters the sealing cavity 402 from the first one-way valve 404 to wait for being pressed by the formed oil sludge next time.
Compared with dispersed granular oil residues output by the pretreatment device in the prior art, the formed oil residues treated by the oil sludge pretreatment device are not mutually bonded, so that the formed oil residues are conveniently stacked in a subsequent cracking furnace to be uniformly heated, the oil residues are fully cracked and combusted, and the harmless treatment effect of the oil sludge is improved.
The above are merely examples of the present invention, and common general knowledge of known specific structures and characteristics in the schemes is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (7)
1. An oil sludge pretreatment device is characterized in that: the oil sludge drying and forming device comprises a primary drying device for heating oil sludge to evaporate and crack water and light components in the oil sludge, a stirring and forming device for adding an adhesive into the oil sludge and stirring and carrying out hot-press forming to obtain formed oil residues, and a secondary drying device for drying and curing the formed oil residues;
the primary drying device comprises a spiral roller and a heating pipe wound outside the spiral roller, the heating pipe and the spiral roller are arranged in a clearance mode, and under the rotating pushing of the spiral roller, the oil sludge is continuously overturned and heated in the spiral roller and moves towards the outlet direction of the spiral roller;
the stirring and forming device comprises a vertically arranged stirring barrel for stirring and mixing the oil residue added with the adhesive and a spiral extrusion unit horizontally arranged below the stirring barrel for extrusion forming of the stirred oil residue;
the secondary drying device comprises a heating box for accommodating and heating the formed oil residue to dry and solidify the formed oil residue.
2. The sludge pretreatment apparatus of claim 1, wherein: a conveying plate is arranged below the outlet end of the spiral extrusion unit, the conveying plate is obliquely arranged, the higher end of the conveying plate is close to the outlet end of the spiral extrusion unit, the lower end of the conveying plate is positioned at the inlet of the heating box, a flexible cloth is arranged on the conveying plate, the periphery of the flexible cloth is fixedly connected with the upper surface of the conveying plate in a sealing manner, so that a sealed cavity is formed between the flexible cloth and the conveying plate, a first air hole for communicating the inner space and the outer space of the sealed cavity is formed in the conveying plate, a first one-way air inlet valve for allowing air to flow into the sealed cavity from the first air hole is arranged at the first air hole, an active pressing plate is arranged above the flexible cloth and covers the flexible cloth, the flexible cloth is fixedly connected with the active pressing plate, one end of the active pressing plate is hinged to the conveying plate, and the other end of the active pressing plate is elastically connected with the conveying plate through an elastic piece;
a powder storage box is arranged above the movable pressure plate and corresponds to the movable pressure plate, a bottom plate of the powder storage box is arranged towards the movable pressure plate, a plurality of powder spraying holes are formed in the bottom plate of the powder storage box, an inner cavity of the powder storage box is communicated with the sealing cavity through a first air pipe, and a second one-way valve which only allows gas to flow from the first air pipe to the inner cavity of the powder storage box is arranged on the powder storage box;
the lateral wall setting of spiral drum's exit end carries out the sieve mesh that sieves tiny powder in the fatlute after the drying, and spiral drum's below corresponds to the sieve mesh setting is used for collecting the take-up (stock) pan of the tiny powder through the screening, the take-up (stock) pan passes through the material pipe and transports tiny powder in the take-up (stock) pan extremely the powder storage box sets up only to permit the object on the powder storage box by the material pipe gets into the third check valve of powder storage box inner chamber.
3. The sludge pretreatment apparatus of claim 2, wherein: the spiral extrusion unit comprises an extrusion barrel which is horizontally arranged, the extrusion barrel is a barrel body with one end open, the upper side part of the extrusion barrel is communicated with the bottom outlet of the stirring barrel, the open end of the extrusion barrel is provided with a thin passage with the inner diameter smaller than the inner diameters of other parts of the extrusion barrel, a spiral pushing rod coaxial with the extrusion barrel is arranged in the inner cavity of the extrusion barrel outside the thin passage, the closed end of the extrusion barrel is provided with a driving motor for driving the spiral pushing rod to rotate, and when the driving motor drives the spiral pushing rod to rotate, the spiral pushing rod extrudes oil residues in the extrusion barrel to the direction of the thin passage.
4. The sludge pretreatment apparatus of claim 3, wherein: the stirring barrel is provided with a first box body used for adding the adhesive into the stirring barrel, and the adhesive is contained in the first box body.
5. The sludge pretreatment apparatus of claim 4, wherein: the spiral roller is sleeved with a heat insulation shell which is made of a heat insulation plate and covers all heating pipes and is used for reducing heat loss of the heating pipes, and the heat insulation shell and the outer wall of the spiral roller are arranged in a clearance mode.
6. The sludge pretreatment apparatus of claim 5, wherein: the elastic piece is a spring, one end of the spring is fixedly connected with the conveying plate, and the other end of the spring is fixedly connected with the movable pressing plate.
7. The sludge pretreatment apparatus according to claim 6, wherein: and the bottom of the stirring barrel is provided with an electric control valve for controlling the opening or closing of the bottom outlet of the stirring barrel.
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| CN202210919345.1A CN115286206B (en) | 2022-08-02 | 2022-08-02 | Fatlute preprocessing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210919345.1A CN115286206B (en) | 2022-08-02 | 2022-08-02 | Fatlute preprocessing device |
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| CN115286206B CN115286206B (en) | 2023-04-25 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009106802A (en) * | 2007-10-26 | 2009-05-21 | Tokyo Electric Power Co Inc:The | Pcb-containing oil sludge treatment method |
| CN110425547A (en) * | 2019-07-18 | 2019-11-08 | 山东圣坤环保科技有限公司 | A kind of disposal of oily sludge complete set of equipments |
| CN111039527A (en) * | 2019-11-27 | 2020-04-21 | 商丘中清环保科技有限公司 | Continuous oil sludge cracking device and method |
| CN113526812A (en) * | 2021-08-18 | 2021-10-22 | 重庆富燃科技股份有限公司 | Process system and method for performing forming cracking on oil sludge |
| CN113819469A (en) * | 2021-10-15 | 2021-12-21 | 西安热工研究院有限公司 | System and method for incinerating oil sludge by using power station pulverized coal boiler |
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2022
- 2022-08-02 CN CN202210919345.1A patent/CN115286206B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009106802A (en) * | 2007-10-26 | 2009-05-21 | Tokyo Electric Power Co Inc:The | Pcb-containing oil sludge treatment method |
| CN110425547A (en) * | 2019-07-18 | 2019-11-08 | 山东圣坤环保科技有限公司 | A kind of disposal of oily sludge complete set of equipments |
| CN111039527A (en) * | 2019-11-27 | 2020-04-21 | 商丘中清环保科技有限公司 | Continuous oil sludge cracking device and method |
| CN113526812A (en) * | 2021-08-18 | 2021-10-22 | 重庆富燃科技股份有限公司 | Process system and method for performing forming cracking on oil sludge |
| CN113819469A (en) * | 2021-10-15 | 2021-12-21 | 西安热工研究院有限公司 | System and method for incinerating oil sludge by using power station pulverized coal boiler |
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