CN114505078A - Hydrodesulfurization catalyst and preparation method thereof - Google Patents
Hydrodesulfurization catalyst and preparation method thereof Download PDFInfo
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- CN114505078A CN114505078A CN202210198301.4A CN202210198301A CN114505078A CN 114505078 A CN114505078 A CN 114505078A CN 202210198301 A CN202210198301 A CN 202210198301A CN 114505078 A CN114505078 A CN 114505078A
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- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/85—Chromium, molybdenum or tungsten
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8603—Removing sulfur compounds
- B01D53/8609—Sulfur oxides
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/009—Preparation by separation, e.g. by filtration, decantation, screening
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
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Abstract
The invention belongs to the technical field of catalyst materials, and particularly relates to a hydrodesulfurization catalyst and a preparation method thereof, wherein the hydrodesulfurization catalyst comprises the following components in parts by weight: roasting the waste alumina at the temperature of 450-550 ℃ to obtain a product A; s2: kneading and molding the product A to obtain a molding object B; s3: dipping the formed object B through a dipping box, firstly putting the formed object B into a placing barrel, then filling dipping liquid containing Co and Mo into a box body, then putting the placing barrel into the box body for immersion, and then driving the placing barrel to rotate through the rotation of a motor so as to carry out saturated dipping on the formed object B; s4: then drying and roasting the impregnated matter in S3 to obtain a hydrodesulfurization catalyst; when steeping the material with the solution, generally directly put into the box with the material, inconvenient material after to the flooding takes out, and after taking out the material after to the flooding, the material outside can depend on there is impregnating liquid, causes impregnating liquid's extravagant problem.
Description
Technical Field
The invention belongs to the technical field of catalyst materials, and particularly relates to a hydrodesulfurization catalyst and a preparation method thereof.
Background
In recent years, with the increasing deterioration of petroleum raw materials, the content of sulfur impurities in the raw materials is increasing, so that in the process of petroleum refining, the flue gas discharged into the atmosphere contains more and more SOX harmful gases, and the environment is seriously polluted; therefore, in the petroleum refining process, the desulfurization treatment is carried out by adopting a more common desulfurization method including hydrodesulfurization and the like, wherein the hydrodesulfurization is to carry out catalytic hydrogenation at a certain temperature and pressure so that S in the petroleum fraction is removed in the form of H2S.
In the prior art, when materials are soaked, the materials are generally directly placed in a box body, the soaked materials are inconvenient to take out, and after the soaked materials are taken out, soaking liquid can adhere to the outer sides of the materials, so that the waste of the soaking liquid is caused.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problems that when materials are soaked, the materials are generally directly placed in a box body, the soaked materials are inconvenient to take out, and after the soaked materials are taken out, soaking liquid is attached to the outer sides of the materials, so that the soaking liquid is wasted, the hydrodesulfurization catalyst and the preparation method thereof are provided by the invention.
The technical scheme adopted by the invention for solving the technical problems is as follows: the hydrodesulfurization catalyst comprises an alumina carrier and a soaking solution containing Co and Mo; the alumina carrier is a product obtained by roasting alumina waste at the temperature of 450-550 ℃.
A preparation method of a hydrodesulfurization catalyst, which is applicable to the above hydrodesulfurization catalyst, and which comprises the following steps:
s1: roasting the waste alumina at the temperature of 450-550 ℃ to obtain a product A;
s2: kneading and molding the product A to obtain a molding object B;
s3: dipping the formed object B through a dipping box, firstly putting the formed object B into a placing barrel, then filling dipping liquid containing Co and Mo into a box body, then putting the placing barrel into the box body for immersion, and then driving the placing barrel to rotate through the rotation of a motor so as to carry out saturated dipping on the formed object B;
s4: and then drying and roasting the impregnated matter in the S3 to obtain the hydrodesulfurization catalyst.
Preferably, the impregnation box comprises a box body and a placing barrel; the bottom end of the placing barrel is in an upper and lower opening state, and a filter screen is fixedly connected to the inner wall of the bottom end of the placing barrel; a group of first through holes are formed in the inner wall of the placing barrel; a motor is fixedly connected to the center of the bottom end of the box body; the output end of the motor is provided with a first rotating shaft, and the first rotating shaft extends into the box body; the placing barrel is fixed on the first rotating shaft through a fixing piece; in the prior art, when materials are soaked, the materials are generally directly placed in a box body, the soaked materials are inconvenient to take out, and after the soaked materials are taken out, soaking liquid can adhere to the outer side of the materials, so that the waste of the soaking liquid is caused, therefore, when the invention works, when the materials are needed to be soaked, the materials are placed in a placing barrel, then the placing barrel is placed in the box body and is fixed on a first rotating shaft through a fixing part, then the liquid in the box body can enter the placing barrel through a filter screen and a first through hole, the materials in the placing barrel are soaked, simultaneously, a motor is opened, the motor drives the first rotating shaft to rotate, the first rotating shaft rotates to drive the placing barrel to rotate, the placing barrel rotates to enable the materials and the soaking liquid to be in a suspension rotating state together, and the materials can be fully wrapped by the soaking liquid, meanwhile, the impregnation efficiency can be further accelerated by the rotation of the impregnation liquid, and the impregnation effect of the materials is ensured.
Preferably, the fixing piece comprises a fixing block; a fixed block is fixedly connected to the center of the filter screen, and the top end of the fixed block is positioned in the placing barrel; the bottom end of the fixed block is provided with a first groove; a group of clamping grooves are formed in the inner wall of the first groove; a second groove is formed in the outer side wall of the top end of the first rotating shaft; the bottom of the second groove is fixedly connected with a clamping block through a spring; the during operation, when installing placing the bucket, aim at first axis of rotation with the first recess of fixed block this moment, let first axis of rotation stretch into in the first recess, then when the motor rotates, the screens piece can pop out under the spring action of spring this moment, then screens piece card goes into the screens inslot, then when first axis of rotation rotates, can drive the fixed block and rotate, and then drives and place the bucket and wholly rotate, improve flooding efficiency.
Preferably, a group of fixing columns is fixedly connected to the outer side wall of the first rotating shaft; the fixed column is rotatably connected with a second rotating shaft; a group of stirring rods is hinged to the second rotating shaft; during operation, when first axis of rotation rotated, can drive the second axis of rotation through the fixed column and rotate around first axis of rotation, and then let the liquid of placing the bucket lateral wall also be in the mobile state, conveniently place the exchange of the inside and outside liquid of bucket.
Preferably, a first gear is fixedly connected to the second rotating shaft; an annular rack is fixedly connected to the inner wall of the box body; the annular rack is meshed with the first gear; the during operation drives when rotating around first axis of rotation through the second axis of rotation at first axis of rotation, because of the intermeshing of first gear and annular rack this moment, can drive the second axis of rotation and realize the rotation, and the second axis of rotation can drive the puddler and expand under receiving the effect of centrifugal force simultaneously, then can drive the local turbulent flow of liquid, and then further let place the inside and outside liquid of bucket and carry out the exchange processing.
Preferably, the end part of the stirring rod is fixedly connected with a vibration ball; the during operation receives under the effect of second axis of rotation centrifugal force at the puddler, can expand, then utilizes the vibrations ball to strike placing bucket inner wall, places the bucket and receives the impact, can let some laminating in the material of placing inner wall break away from, makes things convenient for liquid to carry out comprehensive impregnation processing.
Preferably, the top end of the box body is in an open state, and a first annular groove is formed in the top end of the box body; a box cover is connected in the first annular groove in a sliding manner; the outer side wall of the box cover is fixedly connected with a guide block; a first sliding groove is formed in the inner wall of the first annular groove; the guide block is connected to the inner wall of the first sliding groove in a sliding manner; a first through groove is formed in the top end of the box cover; the outer side wall of the placing barrel is fixedly connected with a fixing ring; the box cover is fixed through a clamping piece; a pair of handles which are symmetrically distributed relative to the first through groove are fixedly connected to the box cover; the during operation, after carrying out comprehensive flooding saturation to the material of placing the bucket, and be equipped with the case lid this moment, when placing the bucket, place the bucket this moment and place through first logical groove, solid fixed ring is located the case lid this moment, when the flooding saturation, then through handle rebound case lid, the case lid can drive and place the bucket and shift up, then break away from the liquid level, fix at the case lid through the screens piece this moment, it is still in the box to place the bucket this moment, first axis of rotation still shifts in the first recess this moment, then start the motor, the motor can drive first axis of rotation and rotate, and then the drive is placed the bucket and is rotated, and then can pass through under the effect of centrifugal force, with some depending on liquid on the material and throw away, carry out preliminary drying to the material, also avoid the waste of flooding liquid.
Preferably, the clamping piece comprises a clamping column; the outer side wall of the box body is fixedly connected with a push plate through a spring, the push plate is fixedly connected with a clamping column, and the clamping column extends into the first annular groove; the box cover is provided with an upper positioning groove and a lower positioning groove; when the device works, the clamping column is clamped into the upper positioning groove when the placing barrel is soaked, and the clamping column is clamped into the lower positioning groove when the placing barrel is centrifuged to remove liquid.
Preferably, the bottom end of the fixing ring is provided with a second annular groove; the inner wall of the second annular groove is fixedly connected with a roller through a third rotating shaft; during operation, the second annular groove is formed in the bottom end of the fixing ring, the idler wheels are arranged in the second annular groove, the barrel can be conveniently placed to rotate on the bottom end of the box cover by means of rotation of the idler wheels, and rotating friction force is reduced.
The invention has the following beneficial effects:
1. according to the hydrodesulfurization catalyst and the preparation method thereof, the motor is started, the motor drives the first rotating shaft to rotate, the first rotating shaft rotates to drive the placing barrel to rotate, the placing barrel rotates to enable materials and impregnating liquid to be in a suspension rotating state together, the materials can be fully wrapped by the impregnating liquid, meanwhile, the impregnating efficiency can be further accelerated through the rotation of the impregnating liquid, and the impregnating effect of the materials is guaranteed.
2. According to the hydrodesulfurization catalyst and the preparation method thereof, the box cover is moved upwards through the handle, the box cover can drive the placing barrel to move upwards and then separate from the liquid level, the placing barrel is fixed on the box cover through the clamping piece at the moment, the placing barrel is still positioned in the box body at the moment, the first rotating shaft still moves in the first groove at the moment, then the motor is started, the motor can drive the first rotating shaft to rotate, the placing barrel is further driven to rotate, and then liquid attached to the material can be thrown away under the action of centrifugal force, the material is primarily dried, and waste of impregnating liquid is avoided.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a flow diagram of a process for preparing a hydrodesulfurization catalyst;
FIG. 2 is a front view of the case;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is an enlarged view of a portion of FIG. 2 at B;
FIG. 5 is a perspective view of the cover;
FIG. 6 is a cross-sectional view of the retaining ring;
in the figure: 1. a box body; 11. placing the barrel; 12. a first through hole; 13. a filter screen; 14. an electric motor; 15. a first rotating shaft; 2. a fixed block; 21. a first groove; 22. a clamping groove; 23. a second groove; 24. a bit block; 25. fixing a column; 26. a second rotating shaft; 27. a stirring rod; 3. a first gear; 31. an annular rack; 32. a vibration ball; 33. a first annular groove; 34. a box cover; 35. a fixing ring; 36. a first through groove; 37. a guide block; 4. an upper positioning groove; 41. a lower positioning groove; 42. pushing the plate; 43. a position clamping column; 44. a second annular groove; 45. and a roller.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 6, a hydrodesulfurization catalyst according to the present invention includes an alumina support and an impregnation solution containing Co and Mo; the alumina carrier is a product obtained by roasting alumina waste at the temperature of 450-550 ℃.
A preparation method of a hydrodesulfurization catalyst, which is applicable to the above hydrodesulfurization catalyst, and which comprises the following steps:
s1: roasting the waste alumina at the temperature of 450-550 ℃ to obtain a product A;
s2: kneading and molding the product A to obtain a molding object B;
s3: dipping the formed object B through a dipping box, firstly putting the formed object B into a placing barrel, then filling a dipping solution containing Co and Mo into a box body 1, then putting a placing barrel 11 into the box body 1 for immersion, and then driving the placing barrel 11 to rotate through the rotation of a motor 14 so as to carry out saturated dipping on the formed object B;
s4: and then drying and roasting the impregnated matter in the S3 to obtain the hydrodesulfurization catalyst. Comprises
The dipping box comprises a box body 1 and a placing barrel 11; the bottom end of the placing barrel 11 is in an upper and lower opening state, and a filter screen 13 is fixedly connected to the inner wall of the bottom end of the placing barrel 11; a group of first through holes 12 are formed in the inner wall of the placing barrel 11; a motor 14 is fixedly connected to the center of the bottom end of the box body 1; the output end of the motor 14 is provided with a first rotating shaft 15, and the first rotating shaft 15 extends into the box body 1; the placing barrel 11 is fixed on the first rotating shaft 15 through a fixing piece; in the prior art, when materials are soaked, the materials are generally directly placed into a box body 1, the soaked materials are inconvenient to take out, and after the soaked materials are taken out, soaking liquid can adhere to the outer side of the materials, so that the soaking liquid is wasted, therefore, when the invention works, when the materials need to be soaked, the materials are placed into a placing barrel 11, then the placing barrel 11 is placed into the box body 1 and is fixed on a first rotating shaft 15 through a fixing part, then the liquid in the box body 1 can enter the placing barrel 11 through a filter screen 13 and a first through hole 12, the materials in the placing barrel 11 are soaked, meanwhile, a motor 14 is opened, the motor 14 drives the first rotating shaft 15 to rotate, the first rotating shaft 15 can drive the placing barrel 11 to rotate, the placing barrel 11 rotates, and the materials and the soaking liquid are in a suspension rotating state together, can guarantee that the material is fully wrapped up by impregnating liquid, simultaneously through impregnating liquid's rotation, can further accelerate flooding efficiency, guarantee the flooding effect of material.
The fixing piece comprises a fixing block 2; the center of the filter screen 13 is fixedly connected with a fixed block 2, and the top end of the fixed block 2 is positioned in the placing barrel 11; the bottom end of the fixed block 2 is provided with a first groove 21; a group of clamping grooves 22 are formed in the inner wall of the first groove 21; a second groove 23 is formed in the outer side wall of the top end of the first rotating shaft 15; a clamping block 24 is fixedly connected to the bottom of the second groove 23 through a spring; the during operation, when installing placing bucket 11, aim at first rotation axis 15 with the first recess 21 of fixed block 2 this moment, let first rotation axis 15 stretch into in first recess 21, then when motor 14 rotates, screens piece 24 can pop out under the spring's elasticity effect this moment, then screens piece 24 card goes into screens groove 22 in, then when first rotation axis 15 rotates, can drive fixed block 2 and rotate, and then drive and place bucket 11 and wholly rotate, improve flooding efficiency.
A group of fixing columns 25 are fixedly connected to the outer side wall of the first rotating shaft 15; a second rotating shaft 26 is rotatably connected to the fixed column 25; a group of stirring rods 27 are hinged on the second rotating shaft 26; during operation, when the first rotating shaft 15 rotates, the second rotating shaft 26 is driven to rotate around the first rotating shaft 15 through the fixing column 25, so that the liquid on the outer side wall of the barrel 11 is in a flowing state, and the exchange of the liquid inside and outside the barrel 11 is convenient to place.
The second rotating shaft 26 is fixedly connected with a first gear 3; an annular rack 31 is fixedly connected to the inner wall of the box body 1; the annular rack 31 and the first gear 3 are meshed with each other; during operation, when first axis of rotation 15 drives and rotates around first axis of rotation 15 through second axis of rotation 26, because of the intermeshing of first gear 3 and annular rack 31 this moment, can drive second axis of rotation 26 and realize the rotation, the second axis of rotation 26 of rotation can drive puddler 27 and expand under receiving the effect of centrifugal force simultaneously, then can drive the local turbulent flow of liquid, and then further let the inside and outside liquid of placing bucket 11 carry out the exchange treatment.
The end part of the stirring rod 27 is fixedly connected with a vibration ball 32; during operation receives under the effect of second axis of rotation 26 centrifugal force at puddler 27, can expand, then utilizes vibrations ball 32 to strike placing bucket 11 inner wall, places bucket 11 and receives the impact, can let some laminating break away from placing the material of inner wall, makes things convenient for liquid to carry out comprehensive impregnation processing.
The top end of the box body 1 is in an open state, and a first annular groove 33 is formed in the top end of the box body 1; a box cover 34 is connected in the first annular groove 33 in a sliding manner; the outer side wall of the box cover 34 is fixedly connected with a guide block 37; a first sliding groove is formed in the inner wall of the first annular groove 33; the guide block 37 is connected to the inner wall of the first sliding chute in a sliding manner; a first through groove 36 is formed in the top end of the box cover 34; the outer side wall of the placing barrel 11 is fixedly connected with a fixing ring 35; the box cover 34 is fixed through a clamping piece; a pair of handles symmetrically distributed with respect to the first through groove 36 is fixedly connected to the box cover 34; when in use, the material in the placing barrel 11 is fully soaked and saturated, and a box cover 34 is arranged at the time, when the placing barrel 11 is placed, the placing barrel 11 is placed through the first through groove 36, the fixing ring 35 is located on the box cover 34, when the dipping is saturated, then the cover 34 is moved upwards by the handle, the cover 34 will drive the placing barrel 11 to move upwards, then the liquid surface is separated, at the moment, the placing barrel 11 is still positioned in the box body 1 when the placing barrel is fixed on the box cover 34 through the clamping piece, at the moment, the first rotating shaft 15 is still displaced in the first groove 21, then, the motor 14 is actuated, the motor 14 will drive the first rotating shaft 15 to rotate, and further drive the placing barrel 11 to rotate, and then can throw away some liquid of depending on the material under the effect of centrifugal force, carry out preliminary drying to the material, also avoid the waste of impregnating liquid.
The blocking piece comprises a blocking column 43; the outer side wall of the box body 1 is fixedly connected with a push plate 42 through a spring, the push plate 42 is fixedly connected with a clamping column 43, and the clamping column 43 extends into the first annular groove 33; the box cover 34 is provided with an upper positioning groove 4 and a lower positioning groove 41; in operation, when the placing barrel 11 is dipped, the position-locking column 43 is locked in the upper positioning groove 4, and when the placing barrel 11 is centrifuged to remove liquid, the position-locking column 43 is locked in the lower positioning groove 41.
The bottom end of the fixing ring 35 is provided with a second annular groove 44; the inner wall of the second annular groove 44 is fixedly connected with a roller 45 through a third rotating shaft; during operation, the bottom end of the fixing ring 35 is provided with the second annular groove 44, the roller 45 is arranged in the second annular groove 44, the barrel 11 can be conveniently placed to rotate on the bottom end of the box cover 34 by means of rotation of the roller 45, and rotation friction force is reduced.
The working principle is as follows: when materials need to be soaked, the materials are placed in the placing barrel 11, the placing barrel 11 is placed in the box body 1 and fixed on the first rotating shaft 15 through the fixing piece, then liquid in the box body 1 enters the placing barrel 11 through the filter screen 13 and the first through hole 12, further the materials in the placing barrel 11 are soaked, the motor 14 is turned on, the motor 14 drives the first rotating shaft 15 to rotate, the first rotating shaft 15 rotates to drive the placing barrel 11 to rotate, the placing barrel 11 rotates to enable the materials and the soaking liquid to be in a suspended rotating state together, the materials can be fully wrapped by the soaking liquid, meanwhile, the soaking efficiency can be further accelerated through the rotation of the soaking liquid, and the soaking effect of the materials is guaranteed; when the placing barrel 11 is installed, the first groove 21 of the fixing block 2 is aligned with the first rotating shaft 15 at the moment, the first rotating shaft 15 extends into the first groove 21, then when the motor 14 rotates, the clamping block 24 can pop out under the elastic force of the spring at the moment, then the clamping block 24 is clamped into the clamping groove 22, then when the first rotating shaft 15 rotates, the fixing block 2 is driven to rotate, the placing barrel 11 is driven to integrally rotate, and the dipping efficiency is improved; when the first rotating shaft 15 rotates, the second rotating shaft 26 is driven to rotate around the first rotating shaft 15 through the fixing column 25, so that the liquid on the outer side wall of the placing barrel 11 is in a flowing state, and the exchange of the liquid inside and outside the placing barrel 11 is facilitated; when the first rotating shaft 15 is driven to rotate around the first rotating shaft 15 through the second rotating shaft 26, the second rotating shaft 26 is driven to rotate due to the mutual engagement of the first gear 3 and the annular rack 31, meanwhile, the rotating second rotating shaft 26 drives the stirring rod 27 to expand under the action of centrifugal force, and then local turbulence of liquid is driven, so that the liquid inside and outside the placing barrel 11 is further subjected to exchange treatment; the stirring rod 27 is unfolded under the action of the centrifugal force of the second rotating shaft 26, then the vibration ball 32 is used for impacting the inner wall of the placing barrel 11, and materials attached to the inner wall of the placing barrel 11 are separated under the action of the impact force, so that the liquid can be conveniently subjected to comprehensive dipping treatment; after the materials in the placing barrel 11 are fully soaked and saturated, the box cover 34 is arranged at the moment, when the placing barrel 11 is placed, the placing barrel 11 is placed through the first through groove 36 at the moment, the fixing ring 35 is positioned on the box cover 34 at the moment, when the materials are soaked and saturated, the box cover 34 is moved upwards through the handle, the box cover 34 can drive the placing barrel 11 to move upwards and then be separated from the liquid level, the materials are fixed on the box cover 34 through the clamping piece at the moment, the placing barrel 11 is still positioned in the box body 1 at the moment, the first rotating shaft 15 still moves in the first groove 21 at the moment, then the motor 14 is started, the motor 14 can drive the first rotating shaft 15 to rotate, the placing barrel 11 is further driven to rotate, and then liquid attached to the materials can be thrown away under the action of centrifugal force, the materials are primarily dried, and waste of soaking liquid is avoided; when the placing barrel 11 is soaked, the clamping column 43 is clamped into the upper positioning groove 4, and when the placing barrel 11 is centrifuged to remove liquid, the clamping column 43 is clamped into the lower positioning groove 41; the bottom end of the fixing ring 35 is provided with a second annular groove 44, and the inside of the second annular groove 44 is provided with a roller 45, so that the barrel 11 can be conveniently placed to rotate on the bottom end of the box cover 34 by the rotation of the roller 45, and the rotating friction force is reduced.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A hydrodesulfurization catalyst is characterized by comprising an alumina carrier and a dipping solution containing Co and Mo; the alumina carrier is a product obtained by roasting alumina waste at the temperature of 450-550 ℃.
2. A method for preparing a hydrodesulfurization catalyst suitable for use as a hydrodesulfurization catalyst of claim 1, comprising:
s1: roasting the waste alumina at the temperature of 450-550 ℃ to obtain a product A;
s2: kneading and molding the product A to obtain a molding object B;
s3: dipping the formed object B through a dipping box, firstly putting the formed object B into a placing barrel, then filling a dipping solution containing Co and Mo into a box body (1), then putting the placing barrel (11) into the box body (1) for immersion, and then driving the placing barrel (11) to rotate through the rotation of a motor (14) so as to carry out saturated dipping on the formed object B;
s4: and then drying and roasting the impregnated matter in the S3 to obtain the hydrodesulfurization catalyst.
3. The process for the preparation of a hydrodesulfurization catalyst according to claim 2 wherein the impregnation tank comprises a tank body (1) and a holding tank (11); the bottom end of the placing barrel (11) is in an upper and lower opening state, and a filter screen (13) is fixedly connected to the inner wall of the bottom end of the placing barrel (11); a group of first through holes (12) are formed in the inner wall of the placing barrel (11); a motor (14) is fixedly connected to the center of the bottom end of the box body (1); the output end of the motor (14) is provided with a first rotating shaft (15), and the first rotating shaft (15) extends into the box body (1); the placing barrel (11) is fixed on the first rotating shaft (15) through a fixing piece.
4. A method for preparing a hydrodesulphurisation catalyst according to claim 3, wherein the fixing means comprise a fixing block (2); the center of the filter screen (13) is fixedly connected with a fixed block (2), and the top end of the fixed block (2) is positioned in the placing barrel (11); the bottom end of the fixed block (2) is provided with a first groove (21); a group of clamping grooves (22) are formed in the inner wall of the first groove (21); a second groove (23) is formed in the outer side wall of the top end of the first rotating shaft (15); and a clamping block (24) is fixedly connected to the bottom of the second groove (23) through a spring.
5. The method for preparing a hydrodesulfurization catalyst according to claim 4, wherein a set of fixing posts (25) is fixedly connected to the outer side wall of the first rotating shaft (15); a second rotating shaft (26) is rotatably connected to the fixed column (25); a group of stirring rods (27) are hinged on the second rotating shaft (26).
6. The method for preparing a hydrodesulfurization catalyst according to claim 5, wherein the second rotating shaft (26) is fixedly connected with a first gear (3); an annular rack (31) is fixedly connected to the inner wall of the box body (1); the annular rack (31) and the first gear (3) are meshed with each other.
7. The process for preparing a hydrodesulfurization catalyst according to claim 6 wherein a vibration ball (32) is attached to the end of the stirring rod (27).
8. The preparation method of hydrodesulfurization catalyst according to claim 7, wherein the top end of the box body (1) is open, and a first annular groove (33) is formed in the top end of the box body (1); a box cover (34) is connected in the first annular groove (33) in a sliding manner; the outer side wall of the box cover (34) is fixedly connected with a guide block (37); a first sliding groove is formed in the inner wall of the first annular groove (33); the guide block (37) is connected to the inner wall of the first sliding chute in a sliding manner; a first through groove (36) is formed in the top end of the box cover (34); the outer side wall of the placing barrel (11) is fixedly connected with a fixing ring (35); the box cover (34) is fixed through a clamping piece; a pair of handles which are symmetrically distributed relative to the first through groove (36) are fixedly connected to the box cover (34).
9. The process for the preparation of a hydrodesulfurization catalyst according to claim 8 wherein said screens comprise a screen (43); the outer side wall of the box body (1) is fixedly connected with a push plate (42) through a spring, the push plate (42) is fixedly connected with a clamping column (43), and the clamping column (43) extends into the first annular groove (33); an upper positioning groove (4) and a lower positioning groove (41) are formed in the box cover (34).
10. The method for preparing a hydrodesulfurization catalyst according to claim 9, wherein a second annular groove (44) is formed at the bottom end of the fixing ring (35); and the inner wall of the second annular groove (44) is fixedly connected with a roller (45) through a third rotating shaft.
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