CN211847654U

CN211847654U - Oily sludge segmented continuous pyrolysis experimental device

Info

Publication number: CN211847654U
Application number: CN202020021225.6U
Authority: CN
Inventors: 林顺洪; 王江林; 郭大江; 柏继松; 季炫宇; 杨宇; 杨鲁
Original assignee: Chongqing University of Science and Technology
Current assignee: Chongqing University of Science and Technology
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2020-11-03
Anticipated expiration: 2030-01-06

Abstract

The utility model relates to an oily sludge treatment technical field provides an oily sludge segmentation continuous pyrolysis experimental apparatus, including rotary kiln, feed screw, stirring subassembly and heating electric stove. The rotary kiln comprises a cylinder body, a kiln tail cover and a kiln head cover, wherein the feeding end of the spiral feeder is positioned outside the kiln tail cover, and the discharging end of the spiral feeder penetrates through the kiln tail cover and extends into the cylinder body. The stirring assembly comprises a stirring shaft, blades and a scraper, the stirring shaft is positioned in the barrel body, two ends of the stirring shaft are respectively and rotatably connected with the kiln tail cover and the kiln head cover, the blades are arranged on the stirring shaft and positioned in the pyrolysis section of the barrel body, and the scraper is arranged on the stirring shaft and positioned in the carbonization section of the barrel body. The electric heating furnace is used for heating the barrel. The utility model discloses an in the rotary kiln was sent into in the oily mud of feed hopper in succession to the feed screw, the epaxial blade of stirring made oily mud be heated more evenly in the barrel, and the epaxial scraper of stirring can strike off the oily mud on the barrel inner wall, made it be difficult to the coking on the inner wall of barrel.

Description

Oily sludge segmented continuous pyrolysis experimental device

Technical Field

The utility model relates to an oily sludge treatment technical field, concretely relates to oily sludge segmentation continuous pyrolysis experimental apparatus.

Background

The oily sludge refers to sludge mixed with heavy oil such as crude oil, various finished oils, oil residue, etc. Oily sludge is produced in large quantities in the petroleum and steel industries. The oily sludge after the concentration and dehydration treatment has the characteristics of complex components, high oil content and high viscosity, and is directly discarded, thereby wasting resources, polluting the environment and needing further treatment. In recent years, the pyrolysis method is adopted to treat the oily sludge so as to recover oil, and residues after pyrolysis can be recycled or directly buried, so that the research is hot, and the corresponding pyrolysis device is a main technical difficulty.

The existing pyrolysis device for the oily sludge has the following problems in use: the oily sludge is difficult to convey, cannot be pyrolyzed continuously, and is heated unevenly in the rotary kiln and easy to coke.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing an oily sludge segmentation pyrolysis experimental apparatus in succession makes oily sludge carry easily, can the pyrolysis treatment oily sludge in succession, and oily sludge is heated evenly in the rotary kiln and be difficult to the coking.

In order to achieve the above purpose, the present invention is implemented by the following technical solutions: the utility model provides an oily sludge segmentation continuous pyrolysis experimental apparatus, includes:

the rotary kiln comprises a barrel, a kiln tail cover and a kiln head cover, wherein a pyrolysis section and a carbonization section are arranged in the barrel along a material conveying direction, the kiln tail cover is sleeved at the high end of the barrel, an air outlet communicated with the interior of the barrel is formed in the kiln tail cover, the kiln head cover is sleeved at the low end of the barrel, and an air inlet and an air outlet communicated with the interior of the barrel are formed in the kiln head cover;

the feed end of the spiral feeder is positioned outside the kiln tail cover, and the discharge end of the spiral feeder penetrates through the kiln tail cover and extends into the cylinder body;

the stirring assembly comprises a stirring shaft, blades and a scraper, the stirring shaft is positioned in the barrel, two ends of the stirring shaft are respectively rotatably connected with the kiln tail cover and the kiln head cover, the blades are arranged on the stirring shaft and positioned in the pyrolysis section of the barrel, and the scraper is arranged on the stirring shaft and positioned in the carbonization section of the barrel; and

and the heating electric furnace is arranged on the outer side of the barrel and used for heating the barrel.

Further, the scraper can be contacted with the inner wall of the barrel body in the process of rotating along with the stirring shaft.

Further, the feed end of screw feeder is provided with the feeder hopper, the feeder hopper is provided with the heater outward, the lower extreme of feeder hopper is provided with the material bottom plate that leaks.

Furthermore, a plurality of material distribution holes communicated with the interior of the spiral feeding machine are formed in the discharging end of the spiral feeding machine.

Further, the lower extreme of discharge gate is provided with the cooling storehouse rather than the intercommunication, the bleeder valve is installed to the bottom in cooling storehouse.

Further, still include the agitator that stretches into in the feeder hopper, the agitator can be dismantled with the feeder hopper and be connected.

Furthermore, the rotary kiln is arranged on a bottom plate with an adjustable inclination angle.

Further, the low end of bottom plate is provided with universal stabilizer blade, the high-end is provided with adjustable stabilizer blade, adjustable stabilizer blade includes: a base portion; the lower end of the screw rod is rotatably connected with the base part, and the upper end of the screw rod penetrates through the bottom plate and is in threaded connection with the bottom plate; the hand wheel is fixedly arranged at the top end of the screw rod; and a support spring disposed between the base portion and the bottom plate.

The utility model has the advantages that: the utility model provides a pair of oily sludge segmentation pyrolysis experimental apparatus in succession sends into the rotary kiln in the oily sludge in the feeder hopper through the feed screw for oily sludge can be by continuous pyrolysis in the rotary kiln. The blades on the stirring shaft stir the oily sludge, so that the oily sludge is heated more uniformly in the cylinder body. The scraper on the stirring shaft can scrape the oily sludge on the inner wall of the cylinder body, so that the oily sludge is not easy to coke on the inner wall of the cylinder body.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic front view of the cross-sectional structure of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A in FIG. 2;

FIG. 4 is a schematic cross-sectional view taken along line B-B in FIG. 2;

FIG. 5 is a schematic view of a stirring shaft structure;

FIG. 6 is a schematic structural view of a kiln tail cap;

fig. 7 is a schematic structural view of the adjusting foot.

Reference numerals: 10-rotary kiln, 11-cylinder, 111-pyrolysis section, 112-carbonization section, 12-kiln tail cover, 121-air outlet, 13-kiln head cover, 131-air inlet, 132-discharge outlet, 20-spiral feeder, 21-feed hopper, 22-heater, 23-material leakage bottom plate, 24-material distribution hole, 30-stirring component, 31-stirring shaft, 32-blade, 33-scraper, 34-cutting edge, 40-electric heating furnace, 50-first motor, 60-second motor, 70-cooling bin, 71-discharge valve, 80-stirrer, 90-bottom plate, 91-adjustable supporting leg, 911-base part, 912-screw rod, 913-hand wheel, 914-supporting spring, 92-universal supporting leg, 100-coking block and 110-oily sludge.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In this application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present application, it is to be understood that the terms "longitudinal," "lateral," "horizontal," "top," "bottom," "upper," "lower," "inner" and "outer" and the like are used in the orientation or positional relationship shown in the drawings, which are used for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

As shown in fig. 1-7, the utility model provides an oily sludge segmentation continuous pyrolysis experimental apparatus, including rotary kiln 10, feed screw 20, stirring subassembly 30, heating electric stove 40, first motor 50 and second motor 60.

The rotary kiln 10 is obliquely arranged, and the rotary kiln 10 comprises a cylinder body 11, a kiln tail cover 12 and a kiln head cover 13. The barrel 11 is internally provided with a pyrolysis section 111 and a carbonization section 112 along the material conveying direction, the kiln tail cover 12 is sleeved at the high end of the barrel 11, the kiln tail cover 12 is provided with an air outlet 121 communicated with the interior of the barrel 11, the kiln head cover 13 is sleeved at the low end of the barrel 11, and the kiln head cover 13 is provided with an air inlet 131 and a discharge hole 132 communicated with the interior of the barrel 11.

When the device starts to work, inert gas is firstly introduced into the rotary kiln 10 through the gas inlet 131, so that air in the rotary kiln 10 is exhausted, and the subsequent treatment of the oily sludge 110 is facilitated.

The feed end of the spiral feeder 20 is positioned outside the kiln tail cover 12, and the discharge end passes through the kiln tail cover 12 and extends into the cylinder 11. The outer wall of the spiral feeder 20 is fixedly connected with the outer wall of the kiln tail cover 12 through bolts, so that the stability of the spiral feeder 20 is enhanced.

The stirring assembly 30 includes a stirring shaft 31, blades 32, and a scraper 33. The stirring shaft 31 is positioned in the barrel body 11, two ends of the stirring shaft are respectively connected with the kiln tail cover 12 and the kiln head cover 13 in a rotating mode, the blade 32 is arranged on the stirring shaft 31 and positioned in the pyrolysis section 111 of the barrel body 11, and the scraper 33 is arranged on the stirring shaft 31 and positioned in the carbonization section 112 of the barrel body 11.

Preferably, the stirring shaft 31 is disposed in the axial direction of the rotary kiln 10 at a lower side in the rotary kiln 10, and the stirring shaft is in the same direction as the rotation direction of the rotary kiln, which facilitates stirring and transporting the oily sludge 110. Two ends of the stirring shaft 31 respectively penetrate through the kiln tail cover 12 and the kiln head cover 13 to extend outwards and are rotatably connected with the kiln tail cover 12 and the kiln head cover 13 through bearings. The stirring shaft 31 of the pyrolysis section 111 is provided with a plurality of blades 32 at intervals, and the blades 32 stir the oily sludge 110 in the rotary kiln 10, so that the oily sludge 110 is heated more uniformly in the barrel 11. A plurality of cutting edges 34 and scrapers 33 are arranged at intervals on the stirring shaft 31 of the carbonization section 112. The first motor 50 and the second motor 60 are respectively used for driving the cylinder 11 and the stirring shaft 31 to rotate.

The electric heating furnace 40 is provided outside the barrel 11 and heats the barrel 11.

After being transported by the screw feeder 20, the oily sludge 110 firstly enters the pyrolysis section 111 of the barrel 11, and undergoes pyrolysis reaction in the pyrolysis section 111. Oily sludge 110 in the pyrolysis section 111 is heated and melted into a liquid state and generates pyrolysis gas, under the high-speed stirring of blades 32 on the stirring shaft 31, oily sludge 110 is heated fully and uniformly, light oil in oily sludge 110 volatilizes rapidly, light oil is discharged from an air outlet 121 and an air inlet 131, oil content is recovered through external water bath cooling, and pyrolysis gas is recovered through an external recovery device. The oily sludge 110 after the pyrolysis reaction enters the carbonization section 112 under the action of gravity and the stirring shaft 31, the oily sludge 110 in the carbonization section 112 is viscous, and at the moment, heavy oil and asphaltene in the oily sludge 110 are decomposed, so that the oily sludge 110 is easily coked on the inner wall of the cylinder 11. The scraper 33 on the stirring shaft 31 is continuously scraped and cut with the inner wall of the cylinder 11, so that the coking block 100 on the inner wall of the cylinder 11 is scraped, and the coking problem on the inner wall of the cylinder 11 is effectively solved. Finally, the residue of the oily sludge 110 is discharged from the discharge port 132. The cutting edge 34 continuously breaks the wall-sticking residue, so that the discharge valve 71 can discharge the residue conveniently.

In one embodiment, the scraper 33 may contact the inner wall of the cylinder 11 during rotation with the stirring shaft 31, so as to better scrape off the substances adhered to the inner wall of the cylinder 11.

In one embodiment, the feed end of the screw feeder 20 is provided with a feed hopper 21, the feed hopper 21 is externally provided with a heater 22, and the lower end of the feed hopper 21 is provided with a material leaking bottom plate 23. Specifically, the heater 22 is installed on an outer wall of the feed hopper 21. The leakage bottom plate 23 is mounted at the bottom of the feed hopper 21. The material leakage bottom plate 23 can prevent large materials from entering the spiral feeder 20 to cause clamping stagnation of the spiral feeder 20, and the material leakage bottom plate 23 can be detached and cleaned.

Before the device starts to work, the electric heating furnace 40 is first turned on to preheat the barrel 11. At this time, the material leakage bottom plate 23 is closed, the oily sludge 110 is accumulated in the feed hopper 21, and when the temperature in the rotary kiln 10 reaches the optimal working temperature, the heater 22 is turned on to work to preheat the oily sludge 110 in the feed hopper 21, so that the flowability of the oil sludge is enhanced, and the feeding and conveying are facilitated.

In one embodiment, the discharge end of the spiral feeder 20 is provided with a plurality of material distribution holes 24 communicating with the interior of the spiral feeder 20. The oily sludge 110 enters the interior of the screw feeder 20 after being heated by the heater 22 on the outer wall of the feed hopper 21, and continuously moves forward under the push of gravity and the helical blade 32, and the material distribution holes 24 are beneficial to uniformly distribute the oily sludge 110 in the rotary kiln 10.

In one embodiment, the lower end of the discharge port 132 is provided with a cooling chamber 70 communicated with the discharge port, and the bottom of the cooling chamber 70 is provided with a discharge valve 71. The residue is discharged from the discharge port 132 into the cooling bin 70, at this time, the discharge valve 71 is closed, the residue is accumulated and cooled in the cooling bin 70, and after the residue is sufficiently cooled, the discharge valve 71 is opened to continuously discharge the residue.

In one embodiment, an agitator 80 is also included, and the agitator 80 extends into the hopper 21 and is removably connected to the hopper 21. When preheating the oily sludge 110 in the feed hopper 21, the stirrer 80 is opened, so that the oily sludge 110 in the feed hopper 21 is heated more uniformly, and the preheating effect of the oily sludge 110 is better. The agitator 80 also has wall scraping and bottom scraping blades to provide sufficient agitation to prevent wall sticking.

In one embodiment, the rotary kiln 10 is mounted on a base plate 90 that is adjustable in inclination. The change of the inclination angle of the bottom plate 90 can adjust and increase the adaptability of the device, so that the device can adapt to the continuous and stable conveying of different materials in the rotary kiln 10.

In one embodiment, the bottom plate 90 is provided with a universal leg 92 at a lower end and an adjustable leg 91 at an upper end, the adjustable leg 91 comprising a base portion 911, a lead screw 912, a hand wheel 913 and a support spring 914. The lower end of the screw rod 912 is rotatably connected with the base part 911, and the upper end of the screw rod 912 passes through the bottom plate 90 and is in threaded connection with the bottom plate 90; the hand wheel 913 is fixedly arranged at the top end of the screw 912; the support springs 914 are disposed between the base portion 911 and the base plate 90. When the user needs to change the inclination angle of the bottom plate 90, the hand wheel 913 is rotated, which is very convenient for the user to operate. Therefore, the inclination angle of the rotary kiln 10 and the feeding speed of the spiral feeder 20 can be quickly adjusted, so that the conveying speed of the oily sludge 110 can be adjusted, and the full pyrolysis can be realized for different oily sludge 110.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an oily sludge segmentation continuous pyrolysis experimental apparatus which characterized in that: the method comprises the following steps:

the stirring assembly comprises a stirring shaft, blades and a scraper, the stirring shaft is positioned in the barrel, two ends of the stirring shaft are respectively rotatably connected with the kiln tail cover and the kiln head cover, the blades are arranged on the stirring shaft and positioned in the pyrolysis section of the barrel, and the scraper is arranged on the stirring shaft and positioned in the carbonization section of the barrel;

the heating electric furnace is arranged on the outer side of the cylinder and used for heating the cylinder; and

the first motor and the second motor are respectively used for driving the rotary kiln and the stirring shaft to rotate.

2. The oily sludge segmented continuous pyrolysis experimental device according to claim 1, characterized in that: the scraper can be contacted with the inner wall of the cylinder body in the process of rotating along with the stirring shaft.

3. The oily sludge segmented continuous pyrolysis experimental device according to claim 1, characterized in that: the feed end of screw feeder is provided with the feeder hopper, the feeder hopper is provided with the heater outward, the lower extreme of feeder hopper is provided with lou material bottom plate.

4. The oily sludge segmented continuous pyrolysis experimental device according to claim 1, characterized in that: and a plurality of material distribution holes communicated with the interior of the spiral feeder are formed in the discharge end of the spiral feeder.

5. The oily sludge segmented continuous pyrolysis experimental device according to claim 1, characterized in that: the lower extreme of discharge gate is provided with the cooling storehouse rather than the intercommunication, the bleeder valve is installed to the bottom in cooling storehouse.

6. The oily sludge segmented continuous pyrolysis experimental device according to claim 1, characterized in that: still including stretching into the agitator in the feeder hopper, the agitator can be dismantled with the feeder hopper and be connected.

7. The oily sludge segmented continuous pyrolysis experimental device according to claim 1, characterized in that: the rotary kiln is arranged on a bottom plate with an adjustable inclination angle.

8. The oily sludge segmented continuous pyrolysis experimental device according to claim 7, characterized in that: the low side of bottom plate is provided with universal stabilizer blade, the high-end is provided with adjustable stabilizer blade, adjustable stabilizer blade includes:

a base portion;

the lower end of the screw rod is rotatably connected with the base part, and the upper end of the screw rod penetrates through the bottom plate and is in threaded connection with the bottom plate;

the hand wheel is fixedly arranged at the top end of the screw rod; and

a support spring disposed between the base portion and the bottom plate.