CN115469051A - Deoiling experimental method for waste oil-containing catalyst - Google Patents
Deoiling experimental method for waste oil-containing catalyst Download PDFInfo
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Abstract
The invention relates to the technical field of catalyst regeneration, and provides a deoiling experimental method for a waste oil-containing catalyst, wherein the experimental method comprises the steps of cleaning, filtering, drying, detecting ignition loss and the like of the waste oil-containing catalyst. According to the deoiling experimental method for the waste oil-containing catalyst, provided by the invention, the waste oil-containing catalyst is cleaned by taking the finished diesel oil as a cleaning agent, so that oil adsorbed on the surface of the waste oil-containing catalyst can be effectively removed, and the problem that the roasting temperature is difficult to control when the waste oil-containing catalyst is deoiled by adopting a roasting deoiling method is solved, so that a brand new thought and method are provided for deoiling treatment of the waste oil-containing catalyst in the actual production process.
Description
Technical Field
The invention relates to the technical field of catalyst regeneration, in particular to a deoiling experimental method for a waste oil-containing catalyst.
Background
At present, with the increasing quality standards of gasoline, diesel oil and other fuels, the amount of catalyst used in the refining process of petroleum is increasing. During petroleum refining, large amounts of hydrophobic oils adsorb on the surface of the catalyst, resulting in catalyst deactivation and ultimately a spent oil-containing catalyst.
In order to realize the recycling of the waste oil-containing catalyst, the waste oil-containing catalyst needs to be subjected to deoiling treatment in advance to remove oil adsorbed on the surface of the catalyst. At present, the conventional deoiling method also adopts a roasting deoiling method, namely, the waste oil-containing catalyst is roasted under a certain high-temperature condition, so that oil adsorbed on the surface of the catalyst is volatilized into gas, and the deoiling is realized. Although the roasting deoiling method has the advantages of simple operation and the like, the oil adsorbed on the surface of the catalyst has combustibility, so that the roasting temperature is difficult to control once the oil on the surface of the catalyst is combusted in the actual high-temperature roasting treatment process, and the deoiling effect cannot be better controlled.
Disclosure of Invention
The invention aims to provide a deoiling experimental method for a waste oil-containing catalyst, and aims to provide a new method for removing oil adsorbed on the surface of the waste oil-containing catalyst, and verify the effectiveness of the deoiling method through an experimental mode, so that a new thought and a new method are provided for the deoiling treatment of the waste oil-containing catalyst.
The purpose of the invention is realized by the following technical scheme:
the invention provides a deoiling experimental method for a waste oil-containing catalyst, which comprises the following steps:
s100, taking four beakers, respectively weighing a certain amount of waste oil-containing catalyst, and adding the waste oil-containing catalyst into the four beakers; then, adding a certain amount of finished diesel oil into the four beakers respectively; the four beakers are respectively marked as a beaker A, a beaker B, a beaker C and a beaker D, the solid-to-liquid ratio of the waste oil-containing catalyst to the finished diesel oil in the beaker A is 1;
s200, respectively placing a beaker A, a beaker B, a beaker C and a beaker D on a magnetic stirrer for stirring at normal temperature, wherein the stirring time of the beaker A and the stirring time of the beaker C are both 2 hours, and the stirring time of the beaker B and the stirring time of the beaker D are both 1 hour;
s300, after stirring, respectively filtering the mixture in the beaker A, the beaker B, the beaker C and the beaker D to obtain filtrate and filter residues, and continuously loading the filter residues into the original beaker, wherein the filter residues are respectively marked as 1#, 2#, 3# and 4# samples;
s400, taking another two beakers, and respectively marking the two beakers as a beaker E and a beaker F; respectively weighing a certain amount of filter residues in the beaker A and the beaker C, and adding the filter residues into the beaker E and the beaker F; then, respectively adding a certain amount of finished diesel oil into the beaker E and the beaker F; wherein the solid-to-liquid ratio of the filter residue in the beaker E to the finished diesel oil is 1;
s500, respectively placing a beaker E and a beaker F on a magnetic stirrer to stir at normal temperature, wherein the stirring time of the beaker E and the stirring time of the beaker F are both 1h;
s600, after stirring is finished, respectively filtering the mixture in the beaker E and the beaker F to obtain filtrate and filter residues, continuously loading the filter residues into the original beaker, and respectively marking as No. 5 and No. 6 samples;
s700, taking a certain amount of 1#, 2#, 3#, 4#, 5# and 6# samples for drying to calculate the oil content of each sample;
in step S200 and step S500, the magnetic stirrer includes a housing, a plurality of magnetic stirring units, a negative pressure pumping unit, and a driving unit, wherein the plurality of magnetic stirring units are distributed on the housing in an annular array;
the magnetic stirring unit comprises a bearing disc, a transmission shaft, a driving magnet and a magnetic stirrer, the bearing disc is arranged on the top surface of the shell, a partition plate is arranged in the bearing disc and divides the interior of the bearing disc into an upper cavity and a lower cavity, an air suction hole is formed in the top of the bearing disc and is communicated with the upper cavity, and the transmission shaft is vertically arranged in the shell in a free rotating manner; the top end of the transmission shaft sequentially penetrates through the top of the shell, the bottom of the bearing disc and the partition plate and then extends into the upper chamber; the driving magnet is sleeved on the outer wall of the transmission shaft and positioned in the lower chamber, and the driving magnet can be coupled with the magnetic stirrer through a magnetic line;
the negative pressure pumping unit comprises air suction pipes and a negative pressure pumping device, the air suction pipes correspond to the magnetic stirring units one by one, one end of each air suction pipe is communicated with the rotary joint, the other end of each air suction pipe is communicated with the negative pressure pumping device, and a valve is arranged on each air suction pipe;
the driving unit is used for driving the transmission shafts of all the magnetic stirring units to synchronously rotate.
In some possible embodiments, in step S700, the method further includes performing ignition loss detection on samples 1#, 2#, 3#, 4#, 5#, and 6#, where the process of ignition loss detection is as follows:
taking a certain amount of samples No. 1, no. 2, no. 3, no. 4, no. 5 and No. 6 to carry out high-temperature roasting under the roasting condition of heating for 3 hours to 500 ℃, carrying out constant-temperature roasting for 2 hours at 500 ℃, then heating to 800 ℃ and carrying out constant-temperature roasting for 2 hours, and finally calculating the loss rate of each sample.
In some possible embodiments, in step S700, the drying temperature for drying the 1#, 2#, 3#, 4#, 5#, and 6# samples is 100 ℃.
In some possible embodiments, the driving unit includes a driving motor, a driving gear, and a transmission gear corresponding to the magnetic stirring unit one to one, the driving motor is disposed inside the casing, an output end of the driving motor is in transmission connection with the driving gear, the transmission gear is sleeved on an outer wall of the transmission shaft and can rotate coaxially with the transmission shaft, and the transmission gear is engaged with the driving gear.
In some possible embodiments, the magnetic stirring unit further comprises a transmission ring, the transmission ring is sleeved on the outer wall of the transmission shaft and is coaxially arranged with the transmission shaft, an annular negative pressure chamber is arranged inside the transmission ring, an air guide channel is arranged on the transmission shaft, and the negative pressure chamber is communicated with the air suction channel through the air guide channel;
drive gear includes two half-gears, detachably connects between two half-gears, one side that two half-gears are relative all is provided with the mounting groove, the mounting groove of two half-gears constitutes inclosed chamber of laying jointly, the transmission ring is located lays the intracavity, it is connected to rotate between the circumference outer wall of transmission ring and the drive gear, the contact position sliding seal of drive gear and transmission shaft, the upside terminal surface of transmission ring is provided with the negative pressure hole, negative pressure hole and negative pressure cavity intercommunication, the upside terminal surface of transmission ring and the upside laminating of laying the chamber.
In some possible embodiments, the negative pressure pumping device comprises an annular air pipe and an air pump, an output end of the air pump is communicated with the air pipe, and one end of the air suction pipe, which is far away from the transmission shaft, is communicated with the air pipe;
the magnetic stirrer further comprises a controller, the controller is arranged inside the shell, and the driving motor, the valve and the air pump are all in communication connection with the controller.
In some possible embodiments, the magnetic stirrer further comprises a fixing unit, the fixing unit comprises fixing columns and fixing assemblies, the fixing columns are vertically arranged on the top surface of the shell and located in the centers of the plurality of magnetic stirring units, and the fixing assemblies are in one-to-one correspondence with the magnetic stirring units;
the fixed component comprises a movable column, a screw rod and a connecting column, a movable groove corresponding to the fixed component one by one is formed in the side wall of the fixed column, one end of the movable column is located in the movable groove and is in sliding connection with the movable groove, the screw rod can be vertically arranged in the movable groove in a free rotating mode, the top end of the screw rod sequentially penetrates through the top surfaces of the movable column and the fixed column, the screw rod is in threaded connection with the movable column, one end of the connecting column is connected with the magnetic stirrer, and the other end of the connecting column is connected with the movable column in a rotating mode.
In some possible embodiments, the magnetic stirrer further comprises a detection unit corresponding to the magnetic stirring unit one to one, the detection unit comprises a rotation speed sensor a and a rotation speed sensor B, the rotation speed sensor a is disposed on the movable column to detect the rotation speed of the connection column, and the rotation speed sensor B is disposed in the lower chamber of the bearing disc to detect the rotation speed of the driving magnet.
In some possible embodiments, the magnetic stirrer comprises a housing and a stirring magnet, wherein the bottom surface of the housing is a plane, the top surface of the housing is an arc-shaped structure, and the stirring magnet is arranged inside the housing and can be coupled with the driving magnet through a magnetic line.
The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects:
1. according to the experimental method for deoiling of the waste oil-containing catalyst, provided by the invention, the waste oil-containing catalyst is cleaned by taking the finished diesel oil as a cleaning agent, so that oil adsorbed on the surface of the waste oil-containing catalyst can be effectively removed, the problem that the roasting temperature is difficult to control when the waste oil-containing catalyst is deoiled by adopting a roasting deoiling method is solved, and a brand new thought and method are provided for deoiling treatment of the waste oil-containing catalyst in the actual production process.
2. According to the deoiling experimental method for the waste oil-containing catalyst, the structure of the magnetic stirrer is improved on the basis of the conventional magnetic stirrer, so that the mixture in a plurality of different beakers can be stirred at a time, the stirring efficiency is improved, meanwhile, the beakers are firmly adsorbed on the bearing plate in a negative pressure adsorption mode, the stability of the beakers in the stirring process can be effectively improved, and the stirring operation can be continuously and reliably carried out.
3. According to the invention, through improving the transmission mode between the transmission shaft and the transmission gear of the magnetic stirring unit, when the time required for stirring the mixture in a plurality of beakers is different, the transmission shaft of the magnetic stirring unit corresponding to the beaker after stirring can be stopped in time, so that the beaker after stirring can be taken away in advance, and the normal stirring of other beakers is not influenced.
4. According to the invention, the detection unit for detecting the rotating speeds of the magnetic stirrer and the driving magnet is further added, so that whether the rotating speeds of the magnetic stirrer and the driving magnet of each magnetic stirring unit are consistent or not can be monitored in real time in the stirring process, and an early warning signal can be timely sent out once the rotating speeds of the magnetic stirrer and the driving magnet are inconsistent, so that the continuous use of the magnetic stirrer under the condition that the rotating speeds of the magnetic stirrer and the driving magnet are different is avoided.
Drawings
FIG. 1 is a schematic structural diagram of a magnetic stirrer according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the interior of the housing according to the embodiment of the present invention;
fig. 3 is a schematic view of an internal structure of a carrier tray according to an embodiment of the present invention;
FIG. 4 is a schematic view of the internal structure of the magnetic stirrer according to the embodiment of the present invention;
FIG. 5 is an enlarged view taken at A in FIG. 2;
FIG. 6 is an enlarged view at B of FIG. 1;
FIG. 7 is a cross-sectional view of the connection between the drive shaft and the drive gear according to an embodiment of the present invention;
FIG. 8 is a schematic view of a transmission gear according to an embodiment of the present invention;
FIG. 9 is a schematic view of a single half gear configuration provided by an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a driving ring according to an embodiment of the present invention.
Icon: 10-shell, 20-magnetic stirring unit, 21-bearing plate, 21 a-upper chamber, 21B-lower chamber, 21 c-air suction hole, 22-transmission shaft, 22 a-air suction channel, 22B-air guide channel, 23-driving magnet, 24-magnetic stirrer, 241-shell, 242-stirring magnet, 243-cover plate, 25-temperature sensor, 26-separation plate, 27-rotary joint, 28-transmission ring, 28 a-negative pressure chamber, 28B-negative pressure hole, 28 c-ball, 30-negative pressure unit, 31-air suction pipe, 32-valve, 33-air pipe, 34-air pump, 40-driving unit, 41-driving motor, 42-driving gear, 43-transmission gear, 431-half gear, 431 a-placing groove, 431B-rolling groove, 50-fixing unit, 51-fixing column, 52-fixing component, 521-movable column, 522-screw, 523-connecting column, 524-knob, 60-control unit, 61-display panel, 62-controller, 71-rotating speed sensor, 72-rotating speed sensor and 100-cup.
Detailed Description
Example 1
In consideration of the fact that the prior art usually adopts a roasting deoiling method to carry out deoiling treatment on the waste oil-containing catalyst, because the oil adsorbed on the surface of the waste oil-containing catalyst has combustibility, in the actual high-temperature roasting treatment process, once the oil on the surface of the catalyst is combusted, the roasting temperature is difficult to control, and the deoiling effect cannot be better controlled.
Therefore, the embodiment provides an experimental method for deoiling of the waste oil-containing catalyst, which is to clean the waste oil-containing catalyst by using finished diesel oil as a cleaning agent to remove oil adsorbed on the surface of the waste oil-containing catalyst, and verify the effectiveness of the deoiling method through an experimental mode, so as to provide a new idea and a new method for deoiling treatment of the waste oil-containing catalyst.
Specifically, the deoiling experimental method of the waste oil-containing catalyst comprises the following steps:
s100, primary cleaning;
after the four beakers 100 are peeled, respectively weighing a certain amount of waste oil-containing catalyst and adding the waste oil-containing catalyst into the four beakers 100; then, adding a certain amount of finished diesel oil into the four beakers 100 respectively; wherein, four beakers 100 are respectively marked as beaker a, beaker B, beaker C and beaker D, the solid-to-liquid ratio of the waste oily catalyst to the finished diesel oil in beaker a is 1.
Illustratively, 150g and 300g of waste oil-containing catalyst and finished diesel oil were added to beaker A, 150g and 300g of waste oil-containing catalyst and finished diesel oil were added to beaker B, 70g and 210g of waste oil-containing catalyst and finished diesel oil were added to beaker C, and 70g and 210g of waste oil-containing catalyst and finished diesel oil were added to beaker D.
S200, respectively placing a beaker A, a beaker B, a beaker C and a beaker D on a magnetic stirrer for stirring at normal temperature, wherein the stirring time of the beaker A and the stirring time of the beaker C are both 2 hours, and the stirring time of the beaker B and the stirring time of the beaker D are both 1 hour.
It should be noted that the product diesel oil in beaker a, beaker B, beaker C and beaker D will gradually become viscous during continuous stirring because the oil adsorbed on the surface of the waste oil-containing catalyst is separated from the surface of the catalyst by the product diesel oil, and at this time, the oil separated from the surface of the catalyst is merged with the product diesel oil, thereby making the oil in beaker 100 become viscous.
S300, after stirring is finished, filtering the mixture in the beaker A, the beaker B, the beaker C and the beaker D respectively to obtain filtrate and filter residues.
It will be appreciated that qualitative filter paper may be used in filtering the mixture in each beaker 100 and the filtration may be performed on a vacuum filtration apparatus to improve the filtering effect and ensure the accuracy of the experimental results. For example, the mixture in the beaker 100 may be filtered using a water ring vacuum pump and a buchner funnel to separate a filtrate containing the finished diesel and oil detached from the surface of the spent oil-containing catalyst and a filter residue containing the catalyst.
Secondly, filtrate generated after filtering in the beaker A, the beaker B, the beaker C and the beaker D can be loaded in different sample bottles, and filter residue is continuously loaded in the original beaker 100 and is respectively marked as samples No. 1, no. 2, no. 3 and No. 4.
S400, secondary cleaning;
taking another two beakers 100, and respectively marking the two beakers 100 as a beaker E and a beaker F; after peeling, respectively weighing a certain amount of filter residues in a beaker A and a beaker C, and adding the filter residues into two beakers E and F; then, respectively adding a certain amount of finished diesel oil into the beaker E and the beaker F; wherein, the solid-to-liquid ratio of the filter residue in the beaker E to the finished diesel oil is 1.
For example, 50g of filter residue and 100g of finished diesel oil are added to beaker E, and 30g of filter residue and 90g of finished diesel oil are added to beaker F. It should be noted that the filter residue added to the beaker E is the filter residue held in the beaker a, and the filter residue added to the beaker F is the filter residue held in the beaker C.
S500, respectively placing a beaker E and a beaker F on a magnetic stirrer to stir at normal temperature, wherein the stirring time of the beaker E and the stirring time of the beaker F are both 1h. It should be noted that the principle of the secondary cleaning is the same as that of the primary cleaning, and the oil adsorbed on the surface of the waste oil-containing catalyst is separated from the catalyst by stirring and mixed with the finished diesel oil in the beaker 100.
S600, after stirring is finished, filtering the mixture in the beaker E and the beaker F respectively to obtain filtrate and filter residues.
It should be noted that the manner of filtering the mixture in the beaker E and the beaker F is the same as the manner of filtering the mixture in the beaker a, the beaker B, the beaker C and the beaker D during the above-mentioned one-time cleaning, and will not be described in detail herein.
Secondly, the filtrates generated after filtration in the beaker E and the beaker F can be loaded in different sample bottles, and the filter residue can be continuously loaded in the original beaker 100 and respectively marked as sample # 5 and sample # 6.
By calculating the oil content of the 1#, 2#, 3#, 4#, 5#, and 6# samples, the oil content of each sample under different solid-to-liquid ratios and different stirring times is shown in table 1:
TABLE 1 deoiling detection record chart for waste oil-containing catalyst
As can be seen from table 1, the waste oil-containing catalyst is cleaned by using the finished diesel oil as a cleaning agent, so that oil adhered to the surface of the waste catalyst can be effectively removed, and the difficulty in further treating the waste oil-containing catalyst in the following process is reduced.
S700, then, taking a certain amount of 1#, 2#, 3#, 4#, 5#, and 6# samples for drying so as to accurately calculate the oil content of each cleaned sample.
It is understood that each sample can be dried in a constant temperature oven in the drying stage, and the drying temperature is controlled at 100 ℃, and the drying condition of each sample is observed at intervals of 2 hours until all samples are completely dried.
Meanwhile, after all samples are dried, the oil content of each sample can be calculated once to determine the oil content of each dried sample, so that the effect of deoiling the waste oil-containing catalyst by using the finished diesel oil can be seen more visually. Wherein, the calculated oil content of each sample is shown in the following table 2:
TABLE 2 drying test chart for waste oil-containing catalyst
As can be seen from table 2, the oil content of each dried sample is about 1%, so in the actual production process, in order to simplify the process of the deoiling treatment, only one cleaning of the waste oil-containing catalyst is needed, and meanwhile, based on that the solid-to-liquid ratio of the waste oil-containing catalyst to the finished diesel is 1.
In addition, in step S700, the method further includes performing ignition loss detection on samples 1#, 2#, 3#, 4#, 5#, and 6#, where the process of performing ignition loss detection is as follows:
taking a certain amount of samples No. 1, no. 2, no. 3, no. 4, no. 5 and No. 6 to carry out high-temperature roasting under the roasting condition of heating for 3 hours to 500 ℃, carrying out constant-temperature roasting for 2 hours at 500 ℃, then heating to 800 ℃ and carrying out constant-temperature roasting for 2 hours, and finally calculating the loss rate of each sample.
For example, 20g of samples 1#, 2#, 3#, 4#, 5# and 6# can be put into a muffle furnace for high temperature baking to detect the loss rate of each sample. The loss on ignition rate of each sample is shown in table 3 below:
TABLE 3 loss on ignition chart for each sample
As can be seen from table 3, by directly performing loss on ignition detection on each cleaned sample, the loss on ignition rate of each sample meets the requirement of further processing the waste catalyst, and the effectiveness of removing oil adsorbed on the surface of the waste oil-containing catalyst by using the finished diesel oil as a cleaning agent is further proved.
Therefore, according to the experimental method for deoiling of the waste oil-containing catalyst, the waste oil-containing catalyst is cleaned by taking the finished diesel oil as the cleaning agent, oil adsorbed on the surface of the waste oil-containing catalyst can be effectively removed, the problem that the roasting temperature is difficult to control when the roasting deoiling method is adopted for deoiling the waste oil-containing catalyst is solved, and a brand new thought and method are provided for deoiling the waste oil-containing catalyst in the actual production process.
It should be noted that, considering that the existing magnetic stirrer can only be placed in one beaker 100 for stirring at a time, in the experiment method provided by the foregoing, the mixture in four beakers 100 needs to be stirred at a time, and the time required for stirring the mixture in each beaker 100 is long, if the mixture in only one beaker 100 is stirred at a time, the time required for the experiment is greatly increased, and if the mixture in multiple beakers 100 is stirred simultaneously by using multiple magnetic stirrers, the cost required for the experiment is increased; in addition, when current magnetic stirrers was in the in-service use, beaker 100 was directly placed on magnetic stirrers, and corresponding fixed establishment does not fix beaker 100, and at long-time stirring in-process, the condition that beaker 100 took place to remove and even dropped from magnetic stirrers probably appears, and then influences going on smoothly of deoiling experiment.
Therefore, referring to fig. 1 to fig. 6, the present embodiment further provides a new magnetic stirrer for implementing steps S200 and S500 in the foregoing experimental method, so that when the steps S200 and S500 are implemented, a single magnetic stirrer can be used to stir the mixture in a plurality of different beakers 100 simultaneously, thereby improving the stirring efficiency and improving the stability of the beakers 100 during the stirring process.
Specifically, the magnetic stirrer includes a housing 10, a plurality of magnetic stirring units 20, a negative pressure drawing unit 30, a driving unit 40, a fixing unit 50, and a control unit 60.
In the present embodiment, referring to fig. 1 and fig. 2, a plurality of magnetic stirring units 20 are distributed on the housing 10 in an annular array, for example, four magnetic stirring units 20 are provided, and four magnetic stirring units 20 are distributed in an annular array with the center of the top surface of the housing 10 as the center of the circle, so that the mixture in four beakers 100 can be stirred at a time. It can be understood that the housing 10 is further provided with corresponding heat dissipation holes, so that the inside of the housing 10 is communicated with the external environment, thereby facilitating air circulation and heat dissipation.
In order to stir the mixture in the beaker 100, the magnetic stirring unit 20 includes a bearing plate 21, a transmission shaft 22, a driving magnet 23, a magnetic stirrer 24 and a temperature sensor 25, the bearing plate 21 is disposed on the top surface of the housing 10, the bearing plate 21 has a hollow structure, so as to reduce the weight of the bearing plate 21 as much as possible, and the bearing plate 21 can be used to support the corresponding beaker 100. Meanwhile, as shown in fig. 3, a partition plate 26 is provided in a horizontal state in the carrier tray 21, the partition plate 26 partitions the interior of the carrier tray 21 into an upper chamber 21a and a lower chamber 21b which are relatively sealed, and an air intake hole 21c is provided in the top of the carrier tray 21, and the air intake hole 21c communicates with the upper chamber 21 a.
With reference to fig. 2, the transmission shaft 22 is vertically disposed inside the housing 10 in a freely rotatable manner, a top end of the transmission shaft 22 sequentially penetrates through a top of the housing 10, a bottom of the bearing plate 21 and the partition plate 26 and then extends into the upper chamber 21a, specifically, bearings may be disposed at joints between the transmission shaft 22 and the housing 10 and between the transmission shaft 22 and the bearing plate 21, so that the transmission shaft 22 can rotate freely, and besides the bearings, a sealing ring or a sealing gasket is further required to be added at the joint between the transmission shaft 22 and the partition plate 26, so as to ensure that the joint between the transmission shaft 22 and the partition plate 26 is sealed well.
Meanwhile, with reference to fig. 3, an air suction channel 22a is disposed inside the transmission shaft 22, the air suction channel 22a penetrates through the transmission shaft 22 along an axial direction of the transmission shaft 22, a rotary joint 27 communicated with the air suction channel 22a is disposed at a bottom end of the transmission shaft 22, the driving magnet 23 is sleeved on an outer wall of the transmission shaft 22 and located in the lower chamber 21b, the driving magnet 23 can be coupled with the magnetic stirrer 24 through a magnetic line, so that the magnetic stirrer 24 can be driven to synchronously rotate when the driving magnet 23 rotates, and the temperature sensor 25 is configured to detect a temperature of the mixture inside the beaker 100.
It is understood that the technology of using the driving magnet 23 to drive the magnetic stirrer 24 to rotate synchronously belongs to the conventional technology of the existing magnetic stirrers, and will not be described in detail herein. It should be noted that, in the actual stirring process, the magnetic stirrer 24 is often directly placed inside the beaker 100, that is, the magnetic stirrer 24 directly contacts with the mixture of the waste oil-containing catalyst and the finished diesel oil, which may affect the service life of the magnetic stirrer 24, and a large amount of mixture may adhere to the magnetic stirrer 24 when the magnetic stirrer 24 is taken out later, which may affect the accuracy of the experimental result.
Therefore, the present embodiment further improves the structure of the magnetic stirrer 24, and specifically, with reference to the content shown in fig. 4, the magnetic stirrer 24 includes a housing 241 and a stirring magnet 242, a bottom surface of the housing 241 is a plane, a top surface of the housing 241 is an arc-shaped structure, and the stirring magnet 242 is disposed inside the housing 241 and can be coupled with the driving magnet 23 through a magnetic line. With this arrangement, by disposing the stirring magnet 242 coupled to the driving magnet 23 inside the case 241, it is possible to protect the stirring magnet 242, and at the same time, by disposing the bottom surface of the case 241 as a plane and disposing the top surface of the case 241 as an arc-shaped structure, the mixture adhered to the top surface of the case 241 can flow down along the arc-shaped surface of the case 241 without affecting the coupling of the stirring magnet 242 and the driving magnet 23, thereby reducing the amount of the mixture remaining on the case 241 as much as possible.
In addition, in order to facilitate the installation of the stirring magnet 242, with continued reference to fig. 4, a receiving groove adapted to the stirring magnet 242 may be disposed at the bottom of the casing 241, and a cover plate 243 which is used for sealing the receiving groove and is detachable is disposed at the bottom of the casing 241, after the stirring magnet 242 is placed in the receiving groove, the cover plate 243 is installed on the casing 241, which is simple and convenient to operate, and the stirring magnet 242 is convenient to replace.
In this embodiment, the negative pressure pumping unit 30 is used for pumping negative pressure to the upper chamber 21a inside the carrier tray 21, so as to achieve that the beaker 100 can be firmly adsorbed on the carrier tray 21 by the negative pressure suction force when the beaker 100 is placed on the top surface of the carrier tray 21, thereby preventing the beaker 100 from moving during the stirring process and improving the stability of the beaker 100 during the stirring process.
Specifically, referring to fig. 2, the negative pressure pumping unit 30 includes air suction pipes 31 and a negative pressure pumping device, the air suction pipes 31 correspond to the magnetic stirring units 20 one to one, that is, one magnetic stirring unit 20 is used in cooperation with one air suction pipe 31, at this time, in combination with the content shown in fig. 5, one end of the air suction pipe 31 is communicated with the rotary joint 27, so that when the transmission shaft 22 rotates freely, interference does not occur between the air suction pipe 31 and the transmission shaft 22, the other end of the air suction pipe 31 is communicated with the negative pressure pumping device, so as to pump negative pressure through the negative pressure pumping device, and the air suction pipe 31 is provided with a valve 32, so as to reasonably control on/off of the air suction pipe 31.
Considering that four magnetic stirring units 20 are provided in the present embodiment, the present embodiment further defines the negative pressure pumping device in order to perform negative pressure pumping on the upper chambers 21a of the carrier trays 21 of the four magnetic stirring units 20 by using one negative pressure pumping device. With reference to fig. 2, the negative pressure pumping device includes an annular vent pipe 33 and an air pump 34, the air pump 34 may be disposed inside the casing 10, the vent pipe 33 is disposed at the inner bottom of the casing 10, an output end of the air pump 34 is communicated with the vent pipe 33, and an end of the air suction pipe 31 away from the transmission shaft 22 is communicated with the vent pipe 33, so that when the air pump 34 works, only the valve 32 on the air suction pipe 31 needs to be opened, and negative pressure pumping can be performed on the upper chamber 21a of the corresponding bearing plate 21, so as to firmly attach the beaker 100 to the bearing plate 21.
In addition, with reference to fig. 1, a plurality of suction holes 21c may be provided on the top surface of the carrier tray 21, and the plurality of suction holes 21c are distributed in an annular array around the center of the carrier tray 21, so as to make the suction force of the negative pressure acting on the bottom of the beaker 100 more uniform as much as possible, thereby further improving the stability of the beaker 100 during the stirring process.
In this embodiment, the driving unit 40 is configured to drive the transmission shafts 22 of all the magnetic stirring units 20 to rotate synchronously, so as to stir the mixture in the four beakers 100 simultaneously at a single time, thereby improving the stirring efficiency.
Specifically, the driving unit 40 includes a driving motor 41, a driving gear 42 and a transmission gear 43 corresponding to the magnetic stirring unit 20 one by one, referring to fig. 2, the driving motor 41 is disposed inside the casing 10, an output end of the driving motor 41 is in transmission connection with the driving gear 42 to drive the driving gear 42 to rotate through the driving motor 41, the transmission gear 43 is sleeved on an outer wall of the transmission shaft 22 and can rotate coaxially with the transmission shaft 22, and the transmission gear 43 is engaged with the driving gear 42.
With such an arrangement, when the driving motor 41 drives the driving gear 42 to rotate, the driving gear 42 drives all the transmission gears 43 to synchronously rotate, and then the transmission gears 43 drive the corresponding transmission shafts 22 to rotate, so that one driving motor 41 is used to drive the transmission shafts 22 of all the magnetic stirring units 20 to rotate, and the manufacturing cost of the magnetic stirrer is reduced.
In the present embodiment, the fixing unit 50 is used to fix the magnetic stirrer 24 and the temperature sensor 25 of each magnetic stirring unit 20, so as to put the magnetic stirrer 24 and the temperature sensor 25 into or take the magnetic stirrer 24 and the temperature sensor 25 out of the beaker 100. Specifically, referring to fig. 1, the fixing unit 50 includes a fixing column 51 and fixing elements 52, the fixing column 51 is vertically disposed on the top surface of the housing 10 and located at the center of the plurality of magnetic stirring units 20, and the fixing elements 52 are in one-to-one correspondence with the magnetic stirring units 20.
Wherein, combine the content that fig. 6 shows, fixed subassembly 52 includes movable post 521, screw 522 and spliced pole 523, the activity groove with fixed subassembly 52 one-to-one is seted up to fixed column 51's lateral wall, the one end of movable post 521 is located the activity inslot and with activity groove sliding connection, so that movable post 521 can slide along the activity groove, but screw 522 free rotation's vertical the setting in the activity inslot, be connected with knob 524 behind the top of screw 522 runs through movable post 521 and fixed column 51's top surface in proper order, threaded connection between screw 522 and the movable post 521, the one end of spliced pole 523 links to each other with magnetic stirrers 24, the other end of spliced pole 523 is connected through the bearing rotation after extending along vertical direction between with movable post 521, temperature sensor 25 is vertical to be set up on movable post 521.
So set up, when needing to put into corresponding beaker 100 with magnetic stirrers 24 and temperature sensor 25 inside, only need the knob 524 of rotatory screw 522 top in order to drive screw 522 and rotate, based on the screw thread transmission principle, the rotary motion of screw 522 will change into the axial rectilinear motion of activity post 521 along screw 522, thereby utilize activity post 521 to drive magnetic stirrers 24 and temperature sensor 25 downstream to the inside suitable position of beaker 100, at this moment, rotate through spliced pole 523 and be connected between magnetic stirrers 24 and the activity post 521 based on, therefore magnetic stirrers 24 can free rotation under the effect of drive magnet 23, and can drive spliced pole 523 synchronous rotation.
In this embodiment, the control unit 60 is used to realize human-computer interaction and improve the automation degree of the magnetic stirrer in use. Specifically, the control unit 60 includes a display panel 61 and a controller 62, and with reference to the contents shown in fig. 1 and fig. 2, the display panel 61 is provided with a touch screen capable of human-computer interaction and is disposed at the front side of the casing 10, the controller 62 may be disposed inside the casing 10, at this time, the driving motor 41, the valve 32 on the air suction pipe 31, the air pump 34, the display panel 61 and the temperature sensor 25 are all in communication connection with the controller 62, and the controller 62 can control the operation of the driving motor 41 and the air pump 34, the on-off of the valve 32 on the air suction pipe 31, receive the instruction sent by the touch screen of the display panel 61, the temperature information collected by the temperature sensor 25, and can display corresponding information (such as the mixing time, the temperature, the operating state of the driving motor 41 and the air pump 34, and the like) on the display panel 61.
In order to clearly and intuitively understand the magnetic stirrer provided in the present embodiment, the working principle of the magnetic stirrer will be further described below with reference to the experimental method described above.
When the above experiment is performed, after step S100 is completed, the four beakers 100 are respectively placed on the top surfaces of the bearing discs 21 of the four magnetic stirring units 20, and then, an instruction is input through the touch screen of the display panel 61 to control the operation of the air pump 34 through the controller 62, and the valves 32 of all the air suction pipes 31 are opened, at this time, the air pump 34 can simultaneously pump the negative pressure to the upper chambers 21a of the bearing discs 21 of the four magnetic stirring units 20, so that the beakers 100 are firmly adsorbed on the top surfaces of the bearing discs 21 under the action of the negative pressure suction force.
Next, the screw 522 of each fixing assembly 52 is adjusted in sequence, so that the corresponding magnetic stirrer 24 and the temperature sensor 25 move downward to the inside of the corresponding beaker 100 under the driving of the movable column 521 and reach a proper position, at this time, an instruction is input through the touch screen of the display panel 61 to control the driving motor 41 to operate through the controller 62, the driving gear 42 is driven by the driving motor 41 to rotate, the transmission shafts 22 of all the magnetic stirring units 20 rotate under the transmission action of the corresponding transmission gears 43, so as to drive the driving magnet 23 to rotate by using the transmission shafts 22, at this time, the magnetic stirrer 24 located inside the beaker 100 rotates under the driving of the driving magnet 23, and thus the mixture in the beaker 100 is stirred by means of the magnetic stirrer 24.
It can be understood that, based on the difference of the time required for stirring the four beakers 100 in step S200, after the stirring of two beakers 100 with the stirring time of 1h is completed, the controller 62 controls the valves 32 on the air suction pipes 31 corresponding to the two beakers 100 to be closed, at this time, the two beakers 100 with the stirring completed are not under the negative pressure, so that the beakers 100 can be removed after the magnetic stirrers 24 and the temperature sensors 25 inside the two beakers 100 with the stirring completed are removed, and after the stirring of the remaining two beakers 100 is completed, the controller 62 controls the driving motor 41 and the air pump 34 to be closed again, so that the remaining two beakers 100 can be removed.
It is understood that the principle of using the magnetic stirrer in the step S500 is similar to that in the step S200, and will not be described in detail herein.
Therefore, in the embodiment, on the basis of the existing magnetic stirrer, the structure of the magnetic stirrer is improved by combining the actual requirements of the experimental method, and on the basis that the mixture in a plurality of beakers 100 can be stirred at a single time, the beakers 100 can be firmly adsorbed on the top surface of the bearing plate 21 in the stirring process, so that the stability of the beakers 100 in the stirring process is effectively improved.
Example 2
On the basis of embodiment 1, considering that the stirring time of two beakers 100 is 1h and the stirring time of the other two beakers 100 is 2h in step S200 described in embodiment 1, if the magnetic stirrer described in embodiment 1 is used, even if two beakers 100 with stirring time of 1h are stirred and can be removed by closing the valve 32 of the corresponding air suction pipe 31, since the transmission shaft 22 of the magnetic stirring unit 20 corresponding to the two beakers 100 is always in the rotating state, there may be a case that the mixture in the beakers 100 is carried out of the beakers 100 when the continuously rotating magnetic stirrer 24 is removed from the beakers 100, and the transmission shaft 22 of the unused magnetic stirring unit 20 is continuously rotated when the other two beakers 100 with stirring time of 2h are continuously stirred, which results in waste of resources.
For this reason, the present embodiment further improves the transmission manner between the transmission shaft 22 and the transmission gear 43 of the magnetic stirring unit 20, so that when the valve 32 of the corresponding air suction pipe 31 is closed, the transmission between the corresponding transmission gear 43 and the transmission shaft 22 will also fail.
Specifically, referring to fig. 7, the magnetic stirring unit 20 in the embodiment further includes a transmission ring 28, the transmission ring 28 is sleeved on the outer wall of the transmission shaft 22 and is coaxially disposed with the transmission shaft 22, preferably, the transmission ring 28 and the transmission shaft 22 are an integrated structure, an annular negative pressure chamber 28a is disposed inside the transmission ring 28, an air guide channel 22b is disposed on the transmission shaft 22, and the negative pressure chamber 28a is communicated with the air suction channel 22a through the air guide channel 22b, so that when the air pump 34 pumps negative pressure to the upper chamber 21a of the bearing disc 21, the negative pressure chamber 28a in the transmission ring 28 can be simultaneously pumped with negative pressure.
Referring to fig. 8, the driving gear 43 includes two half gears 431 detachably connected to each other, and specifically, both end surfaces of the two half gears 431 are provided with a connecting hole, when the two half gears 431 are combined together, the two half gears 431 may be connected together by a fastening member such as a bolt, and meanwhile, in combination with the content shown in fig. 9, both opposite sides of the two half gears 431 are provided with an installation groove 431a, when the two half gears 431 are combined together, the installation grooves 431a of the two half gears 431 together form a closed installation cavity, and by configuring the driving gear 43 as the two half gears 431, the driving gear 43 is conveniently installed on the driving shaft 22 and the driving ring 28 is just located in the installation cavity, at this time, the circumferential outer wall of the driving ring 28 is rotatably connected to the driving gear 43, and a contact position of the driving gear 43 with the driving shaft 22 is slidably sealed, so that the driving gear 43 can rotate around the driving shaft 22 and the driving ring 28 when the air pump 34 is not operated. Meanwhile, with reference to fig. 10, the upper end surface of the driving ring 28 is provided with a negative pressure hole 28b, the negative pressure hole 28b communicates with the negative pressure chamber 28a, and the upper end surface of the driving ring 28 is attached to the upper side of the mounting cavity.
In order to realize the rotational connection between the transmission ring 28 and the transmission gear 43, as shown in fig. 10, a ball 28c capable of freely rotating may be disposed on the circumferential outer wall of the transmission ring 28, as shown in fig. 9, an arc rolling groove 431b adapted to the ball 28c may be disposed in the installation groove 431a at the end surface of one side opposite to the two half gears 431, and when the two half gears 431 are combined together, the arc rolling grooves 431b of the two half gears 431 together form an annular rolling cavity for accommodating the ball 28c, so that the ball 28c can freely rotate in the annular rolling cavity, thereby realizing the rotational connection between the transmission gear 43 and the transmission ring 28.
With such an arrangement, when the air pump 34 is not operated, since the connection mode between the transmission gear 43 and the transmission ring 28 is rotational connection and the contact position between the transmission gear 43 and the transmission shaft 22 is sealed in a sliding manner, even if the transmission gear 43 is driven by the driving gear 42 to rotate, the transmission gear 43 cannot drive the transmission ring 28 to rotate together with the transmission shaft 22, and at this time, the transmission gear 43 will rotate; when the air pump 34 works, the air pump 34 pumps negative pressure to the upper chamber 21a of the bearing disc 21 and the negative pressure chamber 28a of the transmission ring 28, at this time, the transmission gear 43 and the transmission ring 28 are firmly adsorbed together under the action of negative pressure, specifically, the contact surface between the transmission ring 28 and the transmission gear 43 is closely adsorbed, so that the transmission gear 43 can drive the transmission ring 28 to synchronously rotate, and further, the transmission ring 28 is utilized to drive the transmission shaft 22 to rotate. It is understood that, in order to ensure that the transmission gear 43 can be firmly adsorbed with the transmission ring 28 under the action of the negative pressure suction force, the negative pressure holes 28b provided on the transmission ring 28 can be increased in number or the output power of the air pump 34 can be increased.
In combination with the practical application scenario in embodiment 1, when the experiment operation in step S200 is performed, in an initial state, the valves 32 of the air suction pipes 31 corresponding to all the magnetic stirring units 20 are in an open state, so as to utilize the air pump 34 to simultaneously pump the negative pressure to the upper chambers 21a of the bearing disks 21 of all the magnetic stirring units 20 and the negative pressure chambers 28a of the transmission rings 28, at this time, the driving motor 41 works, and the transmission shafts 22 of all the magnetic stirring units 20 can be driven to rotate through the transmission action of the driving gear 42 and each transmission gear 43, thereby simultaneously stirring the mixture in the four beakers 100. After the two beakers 100 with the stirring time of 1h are stirred, the controller 62 closes the valves 32 of the air suction pipes 31 corresponding to the two beakers 100, at this time, the bearing discs 21 of the magnetic stirring units 20 corresponding to the two beakers 100 will not adsorb the beakers 100 any more, and the transmission gears 43 corresponding to the magnetic stirring units 20 will start to rotate, so that the transmission shafts 22 of the magnetic stirring units 20 will not rotate, and further the magnetic stirrers 24 and the temperature sensors 25 in the stirred beakers 100 are taken out and the beakers 100 are taken down from the corresponding bearing discs 21, and only the transmission shafts 22 of the other two magnetic stirring units 20 rotate in the subsequent process of continuously stirring the two beakers 100 with the stirring time of 2h, thereby effectively saving resources.
It can be seen that, in this embodiment, on the basis of embodiment 1, by improving the transmission manner between the transmission shaft 22 and the transmission gear 43, the beaker 100 with completed stirring can be conveniently taken down in the actual experiment process, and in the subsequent stirring process, the transmission shaft 22 of the magnetic stirring unit 20 corresponding to the beaker 100 with completed stirring will not rotate any more. Meanwhile, the transmission ring 28 and the transmission gear 43 are adsorbed by the negative pressure suction force, and when the transmission gear 43 rotates to any angle, the transmission ring 28 and the transmission gear 43 can be firmly adsorbed together, so that transmission between the transmission ring and the transmission gear is realized, and the practicability in the practical application process is effectively improved.
Example 3
On the basis of embodiment 1, it is considered that, in the normal use process of the existing magnetic stirrer, when the magnetic stirrer 24 is driven by the driving magnet 23 to rotate, the rotation speed of the magnetic stirrer 24 is often consistent with the rotation speed of the driving magnet 23, and if the rotation speeds of the magnetic stirrer 24 and the driving magnet 23 are different (normally, the rotation speed of the magnetic stirrer 24 is slightly lower than the rotation speed of the driving magnet 23), it indicates that a fault occurs, and the maintenance needs to be performed in time. For this reason, the magnetic stirrer provided in the present embodiment is further provided with a detection unit corresponding to the magnetic stirring units 20 one to one, so as to detect whether the rotation speeds of the magnetic stirrer 24 and the driving magnet 23 are consistent in real time through the detection unit.
Specifically, the detecting unit includes a rotation speed sensor a71 and a rotation speed sensor B72, the rotation speed sensor a71 is disposed on the movable column 521 to detect the rotation speed of the connecting column 523 in combination with the content shown in fig. 6, and the rotation speed sensor B72 is disposed in the lower chamber 21B of the carrier tray 21 to detect the rotation speed of the driving magnet 23 in combination with the content shown in fig. 3.
With this arrangement, based on the fact that the magnetic stirrer 24 in embodiment 1 is rotatably connected to the movable column 521 through the connecting column 523, the rotating speed of the magnetic stirrer 24 is the same as that of the connecting column 523, and the rotating speed of the connecting column 523 detected by the rotating speed sensor a71 is the rotating speed of the magnetic stirrer 24, at this time, it is only necessary to determine whether the rotating speeds of the magnetic stirrer 24 and the driving magnet 23 are the same according to the rotating speed of the connecting column 523 detected by the rotating speed sensor a71 and the rotating speed of the driving magnet 23 detected by the rotating speed sensor B72.
It should be noted that, in practical implementation, both the rotation speed sensor a71 and the rotation speed sensor B72 may be in communication connection with the controller 62 of the control unit 60, so as to receive rotation speed information detected by the rotation speed sensor a71 and the rotation speed sensor B72 through the controller 62, and determine whether the rotation speeds of the magnetic stirrer 24 and the driving magnet 23 are consistent according to the rotation speed information, when the rotation speeds of the magnetic stirrer 24 and the driving magnet 23 are not consistent, the controller 62 displays the fault information through the display panel 61 and can send out a corresponding warning signal, for example, a buzzer alarm or an audible and visual alarm may be added, and the buzzer alarm or the audible and visual alarm may be in communication connection with the controller 62 to achieve warning.
It can be seen that, in this embodiment, on the basis of embodiment 1, by further adding a detection unit corresponding to the magnetic stirring unit 20, when the mixture in the beaker 100 is stirred by using the magnetic stirrer, the rotation speeds of the magnetic stirrer 24 and the driving magnet 23 of each magnetic stirring unit 20 can be monitored in real time, and in case of a fault, an early warning signal is timely sent out, so that the continuous use of the magnetic stirrer is avoided under the condition that the rotation speeds of the magnetic stirrer 24 and the driving magnet 23 are different.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A deoiling experimental method for a waste oil-containing catalyst is characterized by comprising the following steps:
s100, taking four beakers, respectively weighing a certain amount of waste oil-containing catalyst, and adding the waste oil-containing catalyst into the four beakers; then, adding a certain amount of finished diesel oil into the four beakers respectively; the four beakers are respectively marked as a beaker A, a beaker B, a beaker C and a beaker D, the solid-to-liquid ratio of the waste oil-containing catalyst to the finished diesel oil in the beaker A is 1;
s200, respectively placing a beaker A, a beaker B, a beaker C and a beaker D on a magnetic stirrer for stirring at normal temperature, wherein the stirring time of the beaker A and the stirring time of the beaker C are both 2 hours, and the stirring time of the beaker B and the stirring time of the beaker D are both 1 hour;
s300, after stirring is finished, filtering the mixture in the beaker A, the beaker B, the beaker C and the beaker D respectively to obtain filtrate and filter residues, continuously loading the filter residues into the original beaker, and marking the filter residues as 1#, 2#, 3# and 4# samples respectively;
s400, taking another two beakers, and respectively marking the two beakers as a beaker E and a beaker F; weighing a certain amount of filter residues in the beaker A, adding the filter residues into the beaker E, weighing a certain amount of filter residues in the beaker C, and adding the filter residues into the beaker F; then, respectively adding a certain amount of finished diesel oil into the beaker E and the beaker F; wherein the solid-to-liquid ratio of the filter residue in the beaker E to the finished diesel oil is 1;
s500, respectively placing a beaker E and a beaker F on a magnetic stirrer to stir at normal temperature, wherein the stirring time of the beaker E and the stirring time of the beaker F are both 1h;
s600, after stirring is finished, filtering the mixture in the beaker E and the beaker F respectively to obtain filtrate and filter residue, continuously loading the filter residue in the original beaker, and respectively marking the filter residue as 5# and 6# samples;
s700, drying a certain amount of 1#, 2#, 3#, 4#, 5# and 6# samples to calculate the oil content of each sample;
in steps S200 and S500, the magnetic stirrer includes a housing, a plurality of magnetic stirring units, a negative pressure pumping unit, and a driving unit, wherein the plurality of magnetic stirring units are distributed on the housing in an annular array;
the magnetic stirring unit comprises a bearing disc, a transmission shaft, a driving magnet and a magnetic stirrer, the bearing disc is arranged on the top surface of the shell, a partition plate is arranged in the bearing disc and divides the interior of the bearing disc into an upper cavity and a lower cavity, an air suction hole is formed in the top of the bearing disc and is communicated with the upper cavity, and the transmission shaft is vertically arranged in the shell in a free rotating manner; the top end of the transmission shaft sequentially penetrates through the top of the shell, the bottom of the bearing disc and the partition plate and then extends into the upper chamber; the driving magnet is sleeved on the outer wall of the transmission shaft and positioned in the lower chamber, and the driving magnet can be coupled with the magnetic stirrer through a magnetic line;
the negative pressure pumping unit comprises air suction pipes and negative pressure pumping devices, the air suction pipes correspond to the magnetic stirring units one by one, one end of each air suction pipe is communicated with the rotary joint, the other end of each air suction pipe is communicated with the negative pressure pumping device, and a valve is arranged on each air suction pipe;
the driving unit is used for driving the transmission shafts of all the magnetic stirring units to synchronously rotate.
2. The deoiling experiment method of the waste oil-containing catalyst according to claim 1, further comprising performing ignition loss detection on 1#, 2#, 3#, 4#, 5#, and 6# samples in step S700, wherein the process of the ignition loss detection is as follows:
taking a certain amount of samples No. 1, no. 2, no. 3, no. 4, no. 5 and No. 6 to carry out high-temperature roasting under the roasting condition of heating for 3 hours to 500 ℃, carrying out constant-temperature roasting for 2 hours at 500 ℃, then heating to 800 ℃ and carrying out constant-temperature roasting for 2 hours, and finally calculating the loss rate of each sample.
3. The method for performing an oil removal experiment on the waste oil-containing catalyst according to claim 1, wherein the drying temperature for drying the samples 1#, 2#, 3#, 4#, 5#, and 6# is 100 ℃ in step S700.
4. The experimental method for deoiling of waste oil-containing catalyst as claimed in claim 1, wherein the driving unit comprises a driving motor, a driving gear and a transmission gear corresponding to the magnetic stirring unit one by one, the driving motor is disposed inside the housing, an output end of the driving motor is in transmission connection with the driving gear, the transmission gear is sleeved on an outer wall of the transmission shaft and can rotate coaxially with the transmission shaft, and the transmission gear is meshed with the driving gear.
5. The experimental method for deoiling of the waste oil-containing catalyst according to claim 4, wherein the magnetic stirring unit further comprises a transmission ring, the transmission ring is sleeved on the outer wall of the transmission shaft and is coaxially arranged with the transmission shaft, an annular negative pressure chamber is arranged inside the transmission ring, an air guide channel is arranged on the transmission shaft, and the negative pressure chamber is communicated with the air suction channel through the air guide channel;
drive gear includes two half-gears, detachably connects between two half-gears, one side that two half-gears are relative all is provided with the mounting groove, the mounting groove of two half-gears constitutes inclosed chamber of laying jointly, the transmission ring is located lays the intracavity, rotate between the circumference outer wall of transmission ring and the drive gear and be connected, the contact position sliding seal of drive gear and transmission shaft, the upside terminal surface of transmission ring is provided with the negative pressure hole, negative pressure hole and negative pressure cavity intercommunication, the upside terminal surface of transmission ring and the upside laminating of laying the chamber.
6. The experimental method for deoiling of waste oil-containing catalyst according to claim 4, wherein the negative pressure pumping device comprises an annular vent pipe and an air pump, an output end of the air pump is communicated with the vent pipe, and one end of the air suction pipe, which is far away from the transmission shaft, is communicated with the vent pipe;
the magnetic stirrer further comprises a controller, the controller is arranged inside the shell, and the driving motor, the valve and the air pump are all in communication connection with the controller.
7. The deoiling experimental method of the waste oil-containing catalyst according to claim 4, wherein the magnetic stirrer further comprises a fixing unit, the fixing unit comprises a fixing column and fixing components, the fixing column is vertically arranged on the top surface of the shell and is positioned in the center of the plurality of magnetic stirring units, and the fixing components are in one-to-one correspondence with the magnetic stirring units;
the fixed component comprises a movable column, a screw rod and a connecting column, a movable groove corresponding to the fixed component one by one is formed in the side wall of the fixed column, one end of the movable column is located in the movable groove and is in sliding connection with the movable groove, the screw rod can be vertically arranged in the movable groove in a free rotating mode, the top end of the screw rod sequentially penetrates through the top surfaces of the movable column and the fixed column, the screw rod is in threaded connection with the movable column, one end of the connecting column is connected with the magnetic stirrer, and the other end of the connecting column is connected with the movable column in a rotating mode.
8. The deoiling experimental method of the abandoned oil-containing catalyst according to claim 7, characterized in that the magnetic stirrer further comprises a detection unit corresponding to the magnetic stirring unit one by one, the detection unit comprises a rotation speed sensor A and a rotation speed sensor B, the rotation speed sensor A is arranged on the movable column to detect the rotation speed of the connecting column, and the rotation speed sensor B is arranged in the lower chamber of the bearing disc to detect the rotation speed of the driving magnet.
9. The deoiling experimental method of the waste oil-containing catalyst as claimed in claim 1, wherein the magnetic stirrer comprises a housing and a stirring magnet, the bottom surface of the housing is a plane, the top surface of the housing is an arc structure, and the stirring magnet is arranged in the housing and can be coupled with the driving magnet through a magnetic line.
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