CN114505011A - Catalyst forming device and application thereof - Google Patents
Catalyst forming device and application thereof Download PDFInfo
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- CN114505011A CN114505011A CN202011172787.1A CN202011172787A CN114505011A CN 114505011 A CN114505011 A CN 114505011A CN 202011172787 A CN202011172787 A CN 202011172787A CN 114505011 A CN114505011 A CN 114505011A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
- B01J2/06—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a liquid medium
- B01J2/08—Gelation of a colloidal solution
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0063—Granulating
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Abstract
The invention relates to the field of oil ammonia column forming, and discloses a catalyst forming device and application of the device in oil ammonia forming, wherein the device comprises a dropping ball, a ball collecting basket, a lifter, a U-shaped column short column and a U-shaped column long column which are communicated through an inclined channel, the U-shaped column short column is arranged below the dropping ball device, the bottom surface of the inclined channel is a slope with an inclined angle, one end of the inclined channel is connected with the U-shaped column short column, the other end of the inclined channel penetrates through the side wall of the U-shaped column long column and extends along the radius direction of the U-shaped column long column, and a convex outlet is formed in the U-shaped column long column; the ball collecting basket with an opening is positioned right below an outlet in the long column of the U-shaped column, and the lifter is arranged at the top of the long column of the U-shaped column and connected with the ball collecting basket for lifting and moving the ball collecting basket. The catalyst forming device can continuously form the catalyst colloid, and has the advantages of flexible and simple operation and good sphericity of the formed balls.
Description
Technical Field
The invention relates to the field of oil ammonia column molding, in particular to a catalyst molding device and application of the device in oil ammonia molding.
Background
The traditional method for producing the catalyst or the catalyst carrier by oil ammonia forming belongs to intermittent production and has low production efficiency. When the formed pellets are taken out and dried, a hydraulic ball discharging method is generally adopted, and the formed pellets are in a gel state, contain about 70% of water, are particularly easy to deform and break, and cause yield reduction and poor sphericity.
CN2346499Y discloses a spherical catalyst forming device, which is composed of a forming and curing column, an aging conveying channel and a ball draining channel, wherein the aging conveying channel can continuously and uniformly convey the balls, and the whole process is continuous. The prior art all adopts the conveyer to bring and realizes the serialization operation, and some prior art still can not avoid the impact when water conservancy goes out the ball to bring the deformation for the gel pellet though set up the control valve at balling-up post lower extreme.
Disclosure of Invention
The invention aims to provide a catalyst forming device which can continuously form catalyst colloid, is flexible and simple to operate and has good sphere forming degree.
In order to achieve the purpose, the invention adopts the following technical scheme:
a catalyst molding apparatus, comprising:
the ball dropping device comprises a dropping head and a hollow U-shaped column, the U-shaped column comprises a U-shaped column short column and a U-shaped column long column, the U-shaped column short column and the U-shaped column long column are communicated through an inclined channel, and the U-shaped column short column is arranged below the ball dropping device;
the bottom surfaces of the U-shaped column short column and the inclined channel are slopes with inclined angles, one end of the inclined channel is connected with the U-shaped column short column, the other end of the inclined channel penetrates through the side wall of the U-shaped column long column and extends along the radius direction of the U-shaped column long column, and a convex outlet is formed in the U-shaped column long column;
the ball collecting basket is provided with an opening and is positioned right below the outlet in the long column of the U-shaped column;
the lifter is arranged at the top of the long column of the U-shaped column, connected with the ball collecting basket and used for lifting and moving the ball collecting basket.
Preferably, the dripper of the ball dripper is connected with the slurry feeding pipe in a bell and spigot manner; the bell and spigot is round or square, preferably round; the inner diameter of the bell socket is 0.5-10 mm, preferably 1-5 mm.
Preferably, the dripper is made of metal or plastic, and the aperture of the tip of the dripper is 0.3-3 mm, preferably 0.3-1.5 mm; one or more dripper connecting ports can be arranged on the dripper, the dripper connecting ports can be distributed in a uniform distribution mode, the distance between the dripper connecting ports is preferably more than 5mm, and the liquid drops are prevented from colliding with each other in the movement process; the number of the jacks on the dripping head is 1-500, preferably 20-200.
Preferably, the included angle between the inclined channel and the horizontal plane is 30-80 degrees, and preferably 45-70 degrees.
Preferably, the height of the short column of the U-shaped column is 50 cm-500 cm, the height of the long column of the U-shaped column is 60 cm-600 cm, and the length of the inclined channel is 20 cm-100 cm.
Preferably, holes are formed in the outer wall and the bottom of the ball collecting basket, a wire mesh bushing is arranged inside the ball collecting basket, and the mesh diameter of the wire mesh is smaller than the diameter of the catalyst to be prepared.
Preferably, the dropping speed of the ball dropping device is 10-60 drops/cm2·min。
Preferably, the lifter can control and adjust the lifting moving speed of the ball collecting basket through a variable frequency motor.
Preferably, an oil phase layer is arranged on the upper layer in the U-shaped column short column, and the thickness of the oil phase layer is preferably 0.1-10 mm.
Preferably, the lower part of the oil phase layer is an ammonia liquid layer, and the height of the ammonia liquid layer is preferably 50-500 cm.
The invention provides application of the catalyst forming device in oil ammonia forming.
The specific working process of the equipment is that a catalyst colloid is dripped out by a ball dripper and is solidified and molded in a U-shaped column short column; the formed gel small ball falls to the bottom end of the short column of the U-shaped column and falls into a ball collecting basket suspended in the long column of the U-shaped column along with the inclined channel; after the ball collecting basket is full of balls, the balls are aged in the long column of the U-shaped column through the lifter, and the balls are lifted out through the lifter after the balls are aged.
Compared with the prior art, the invention has the following advantages: the catalyst forming device realizes forming and aging through the short columns and the long columns of the U-shaped columns, and can continuously produce the catalyst or the carrier by adopting an oil ammonia forming method in cooperation with the ball collecting basket and the lifter, so that the impact of hydraulic ball discharging on the appearance of the catalyst is overcome, the formed catalyst or the carrier has good sphericity, uniform and concentrated particle size, and flexible and simple operation.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic structural diagram of an oil ammonia forming device according to a preferred embodiment of the present invention.
Description of the reference numerals
1-a ball dropping device, 2-a U-shaped column short column, 3-a U-shaped column long column, 4-an inclined channel, 5-a ball collecting basket, 6-a lifter, 7-an oil phase layer, 8-an ammonia liquid layer and 41-an outlet.
Detailed Description
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The present invention provides a novel catalyst forming apparatus, as shown in fig. 1, the forming apparatus includes:
the ball dropping device 1 comprises a dropping head and a slurry feeding pipe;
the hollow U-shaped column comprises a U-shaped column short column 2 and a U-shaped column long column 3, wherein the U-shaped column short column 2 and the U-shaped column long column 3 are communicated through an inclined channel 4, and the U-shaped column short column 2 is arranged below the ball dropping device 1;
the bottom surfaces of the U-shaped column short column 2 and the inclined channel 4 are slopes with inclined angles, one end of the inclined channel 4 is connected with the U-shaped column short column 2, and the other end of the inclined channel 4 penetrates through the side wall of the U-shaped column long column 3 and extends in the radius direction of the U-shaped column long column 3 to form a convex outlet 41 in the U-shaped column long column 3;
a ball collecting basket 5 having an opening, said ball collecting basket 5 being located directly below an outlet 41 in said U-shaped pillar 3;
the lifter 6 is arranged at the top of the U-shaped column long column 3, is connected with the ball collecting basket 5 and is used for lifting and moving the ball collecting basket 5.
The catalyst forming device realizes forming and aging through the short columns and the long columns of the U-shaped columns, and can continuously produce the catalyst or the carrier by adopting an oil ammonia forming method in cooperation with the ball collecting basket and the lifter, so that the impact of hydraulic ball discharging on the appearance of the catalyst is overcome, the formed catalyst or the carrier has good sphericity, uniform and concentrated particle size, and flexible and simple operation.
According to the preferred embodiment of the invention, the inclined channel 4 forms an included angle of 30-80 degrees with the horizontal plane.
According to the preferred embodiment of the invention, the inclined channel 4 forms an included angle of 45-70 degrees with the horizontal plane.
According to a preferred embodiment of the present invention, the height of the U-shaped stud 2 is 50cm to 500 cm.
According to a preferred embodiment of the present invention, the height of the U-shaped column 3 is 60cm to 600 cm.
According to a preferred embodiment of the invention, the length of the inclined channel 4 is comprised between 20cm and 100 cm. The shapes of the short column 2, the long column 3 and the inclined channel 4 are not limited, and the short column can be rectangular, cylindrical or other shapes.
According to a preferred embodiment of the invention, the outer wall and the bottom of the ball collecting basket 5 are perforated, and a wire mesh bushing is arranged inside the ball collecting basket, and the mesh diameter of the wire mesh bushing is smaller than the diameter of the catalyst to be prepared. According to the invention, the silk screen lining can integrally lift out the gel pellets when the balls are discharged, so that deformation of the gel pellets caused by impact during hydraulic ball discharging is avoided. After the ball is discharged, the silk screen bush can be directly put into an oven for drying.
According to the preferred embodiment of the invention, the dripper of the ball dripper 1 and the slurry feeding pipe are connected in a socket manner.
According to a preferred embodiment of the invention, the socket is circular or square, preferably circular.
According to a preferred embodiment of the invention, the inner diameter of the socket is 0.5-10 mm, preferably 1-5 mm.
According to a preferred embodiment of the present invention, the dripper is made of metal or plastic, and the diameter of the hole at the tip of the dripper is 0.3-3 mm, preferably 0.3-1.5 mm.
According to the preferred embodiment of the invention, one or more dripper connecting ports are arranged on the dripper 1, the dripper connecting ports are distributed in a uniformly distributed manner, and the distance between the dripper connecting ports is more than 5 mm.
According to the preferred embodiment of the invention, the number of the jacks on the dripper is 1-500, preferably 20-200.
According to the preferred embodiment of the invention, the ball dropping device 1 is arranged so that the ball dropping speed is 10-60 drops/cm2·min。
According to the preferred embodiment of the present invention, the lifter 6 can control and adjust the lifting moving speed of the ball collecting basket 5 through a variable frequency motor.
According to a preferred embodiment of the present invention, the upper and lower layers in the U-shaped stub 2 are provided with an oil phase layer 7 and an ammonia liquid layer 8, respectively.
The U-shaped column can be made of organic glass, plastic or toughened glass.
According to a preferred embodiment of the present invention, the oil phase layer 7 has a thickness of 0.1 to 10mm and the ammonia liquid layer 8 has a height of 50 to 500 cm.
According to the preferred embodiment of the present invention, the presence of the oil phase is mainly to make the dropped slurry droplets shrink into a spherical shape by the action of interfacial tension, and if there is no oil phase layer 7, the slurry droplets will be deformed by impact when they come into contact with the liquid surface in the oil ammonia column, and the deformation will be fixed in the ammonia liquid layer 8. The oil phase layer is an organic matter with proper viscosity, and the viscosity of the organic matter is 0.1-2 centipoises, preferably 0.3-1.5 centipoises; preferably, the organic material in the oil phase layer 7 is hexane, heptane, octane, nonane, toluene, gasoline, kerosene, petroleum ether, or a mixture thereof.
In the invention, the height of the ammonia liquid layer 8 is preferably 50-500 cm, the ammonia liquid layer 8 is an aqueous solution of ammonia water, ammonium sulfate or ammonium chloride, the electrolyte concentration is 3-15 wt%, and the preferred electrolyte solution phase is an ammonia water solution.
In the present invention, preferably, the lifter 6 can control the lifting moving speed of the ball collecting basket 5 through a variable frequency motor, specifically taking the condition that the appearance of the gel beads is not affected as a standard.
In the invention, the outer peripheral wall and the bottom of the ball collecting basket 5 are provided with holes, a wire mesh bushing is arranged in the ball collecting basket, and the mesh diameter of the wire mesh is smaller than the diameter of the catalyst to be prepared.
In the invention, the wire mesh bushing can integrally lift out the gel pellets when the balls are discharged, so that the gel pellets are prevented from being deformed by impact when the balls are discharged by waterpower. After the ball is discharged, the silk screen bush can be directly put into an oven for drying.
In the invention, in order to ensure that slurry drops smoothly pass through the oil phase layer 7 and enter the ammonia liquid layer 8, preferably, a surfactant is sprayed on the interface between the oil phase layer 7 and the ammonia liquid layer 8 to reduce the interfacial tension, the added surfactant can be an ionic surfactant or/and a nonionic surfactant, the surfactant is preferably one or more of dioctyl sodium sulfosuccinate, sodium p-methoxyfatty amide benzene sulfonate, coconut oil diethanolamide, cetearyl alcohol polyoxyethylene ether and C6-C8 alkyl polyglucoside, and the adding amount of the surfactant is preferably 0.0001-1 g/h.
The dropping speed of the dropping ball device 1 is not easy to be too fast, and too fast, more emulsion drops are formed between the oil phase and the ammonia phase, so that the oil phase and the water phase are not separated in time to form an emulsion layer. Therefore, the pressure of the compressed air of the preferred dropping ball device 1 is 0.05-0.3 MPa, the dropping ball speed of the dropping ball device 1 should be controlled in a proper range, and the preferred dropping ball speed is 10-60 drops/cm2Min. The solid content of the slurry of the ball dropper 1 determines the viscosity of the slurry, and the higher the viscosity is, the greater the propelling force required for dropping balls of the ball dropper 1 is, so that the solid content of the slurry is preferably 10-30 wt%.
In the catalyst forming device, the dropping ball device 1 is used for dispersing catalyst colloid into small drops, the small drops fall into an oil phase layer 7 on the upper layer in the U-shaped column short column 2, shrink into balls by surface tension, and continuously fall into an ammonia liquid layer 8 for curing and forming; the formed gel pellets fall to the lower end of the U-shaped column short column 2 and fall into a ball collecting basket 5 suspended in the U-shaped column long column 3 along with an inclined channel 4 for communicating the U-shaped column short column 2 with the U-shaped column long column 3; after the ball collecting basket 5 collects the full balls, the balls are aged in the U-shaped column long column 3 through the lifter 6, and the balls are lifted out through the lifter 6 after the aging.
According to the preferred embodiment of the invention, the ball dropper 1 comprises a dropper and a slurry feeding pipe, wherein the dropper is connected with the slurry feeding pipe in a socket mode so as to replace the dropper when the dropper is blocked, the socket can be round or square, the socket is preferably round, and the inner diameter of the socket can be 0.5-10 mm, and is preferably 1-5 mm.
According to the preferred embodiment of the present invention, the material of the dripper is selected from metal or plastic, and the diameter of the hole at the tip of the dripper is 0.3-3 mm, preferably 0.3-1.5 mm.
According to the preferred embodiment of the invention, one or more dripper connecting ports can be arranged on the ball dropper 1, when a plurality of drippers are installed, the dripper connecting ports can be distributed in a uniformly distributed manner, the distance between the dripper connecting ports is preferably greater than 5mm, mutual collision during the movement of liquid drops is prevented, and the number of the dripper inserting holes can be 1-500, preferably 20-200.
The drop ball forming method provided by the invention can be used for producing various spherical catalysts or catalyst carriers, and the oxide used for the drop balls can be a single oxide or a mixture of oxides. The single oxide is preferably alumina, and the mixture of the oxides is preferably one mixture of alumina-molecular sieves. The molecular sieve can be ZSM-5, ZSM-11, ZSM-13, ZSM-22, ZSM-32, ZSM-48, ZSM-50, SAPO-11, SAPO-34, MCM-22, MCM-44, X, Y, beta or MOR molecules, and the mass ratio of the alumina to the molecular sieve in the mixture of the oxides is 1: 0.1-5.
After slurry liquid drops of the dropping ball device 1 pass through the oil phase layer 7, gelling and forming are carried out in the ammonia liquid layer 8, the temperature of the ammonia liquid layer 8 is preferably 10-30 ℃, volatilization of electrolytes such as ammonia gas and oil is aggravated when the temperature is too high, the formed colloidal particles are aged in the ammonia phase layer 8, and the aging time is preferably 0.5-12 h; and taking the aged gel particles out of the ammonia phase layer 8, and then drying and roasting, wherein the drying temperature is preferably 40-120 ℃, and the roasting temperature is 450-750 ℃, and is preferably 550-650 ℃.
The catalyst forming device provided by the invention specifically works as follows:
dripping catalyst colloid from the dropping ball device 1, and curing and molding in the U-shaped column short column 2; the formed gel pellets fall to the bottom end of the short column 2 of the U-shaped column and fall into a ball collecting basket 5 suspended in the long column 3 of the U-shaped column along with the inclined channel 4; after the ball collecting basket 5 collects the full balls, the balls are aged in the U-shaped column long column 3 through the lifter 6, and the balls are lifted out through the lifter 6 after the aging.
The following examples using examples of the present invention and comparative examples of the prior art are listed to illustrate the effects of the present invention.
Example 1
The invention provides a catalyst forming device for producing alumina carrier pellets.
By adopting the catalyst forming device shown in the figure 1, 6 dripper connecting holes are uniformly formed in a dripper 1, 6 drippers are installed, the distance between the drippers is 1cm, the diameter of the tip of the dripper is 0.8 mm, the height of a short column 2 of a U-shaped column is 150cm, the length of the short column is 30cm, the width of the short column is 20cm, the height of a long column 3 of the U-shaped column is 200cm, the length of the long column is 40cm, the width of the long column is 30cm, the included angle between an inclined channel and the horizontal plane is 45 degrees, n-heptane is used in an oil phase layer 7, the viscosity of the n-heptane is 0.41 centipoise, the thickness of the oil phase layer 7 is 0.5cm, 7 wt% ammonia water is used in an ammonia liquid layer 8, and the height of the ammonia liquid is 140 cm. The surfactant is coconut oil diethanolamide, and is continuously added into the oil ammonia phase interface by a peristaltic pump at an amount of 0.001g/h, the distance between the tip of a dripper and the oil phase layer 7 is 10cm, and the dropping ball speed is 30 drops/cm2·min。
The preparation method comprises the steps of adding acid into SB powder produced by Sasol company of Germany, peptizing at 70 ℃, mixing the SB powder, deionized water, nitric acid and urea according to the mass ratio of 70: 140: 2.5: 10 to form slurry, dripping the slurry out through a dripper, entering an oil phase layer 7 to form balls, enabling the balls to smoothly pass through an oil-ammonia phase interface, entering an ammonia liquid layer 8 to be gelled and solidified, aging the gelled balls in ammonia water for 3 hours, taking out, drying at 60 ℃ for 12 hours, drying at 120 ℃ for 3 hours, and roasting at 550 ℃ for 3 hours to obtain the aluminum oxide balls.
The whole dropping process is smooth, all colloids smoothly pass through an oil-ammonia phase interface and enter the ball collecting basket 5 through the inclined channel 4, the prepared alumina pellets are good in sphericity and concentrated in particle size, the particle size of each pellet is 0.4-0.6 mm, the bulk density is 0.7 g/ml, and the crushing strength is 150N/pellet.
Example 2
The invention provides a catalyst forming device for producing molecular sieve-alumina pellets.
By adopting the catalyst forming device shown in figure 1 of the invention, 6 drippers are uniformly arranged on the ball dripper 1 for connectionAnd 6 drippers are arranged in the holes, the distance between the drippers is 1cm, the diameter of the tip of each dripper is 0.8 mm, the short column 2 of the U-shaped column is 150cm high, 30cm long and 20cm wide, and the long column 3 of the U-shaped column is 200cm high, 40cm long and 30cm wide. The inclined channel 4 forms an included angle of 45 degrees with the horizontal plane; the oil layer 7 is made of n-heptane with the viscosity of 0.41 centipoise, the height of the oil layer is 1cm, and the ammonia liquid layer 8 is made of 7 wt% ammonia water with the height of 145 cm; the surfactant is coconut oil diethanolamide, and is continuously added to the oil ammonia phase interface by a peristaltic pump, wherein the addition amount is 0.001 g/h; the tip of the dripper is 5cm away from the oil surface; dropping ball rate of 30 drops/cm2·min。
HY-alumina globule is continuously produced by taking an HY molecular sieve and alumina sol as raw materials, the HY solid content in the raw materials is 35 wt%, the alumina sol solid content is 30 wt%, the molecular sieve and alumina are mixed to form slurry according to the mass ratio of 4: 1, the raw material slurry is dripped out through a dripper and enters an oil phase layer 7 of a U-shaped column to be pelletized, the globule smoothly passes through an oil-ammonia phase interface and enters an ammonia liquid layer 8 to be gelled and solidified, the gelled globule is aged in ammonia water for 3 hours, then is dried at 60 ℃ for 12 hours, dried at 120 ℃ for 3 hours, and roasted at 550 ℃ for 3 hours to prepare the molecular sieve-alumina globule.
The whole dropping process is smooth, all colloids smoothly pass through an oil-ammonia phase interface and enter the ball collecting basket 5 through the inclined channel 4, and the prepared alumina spheres have good sphericity and uniform particle size, wherein the particle size of the spheres is 0.4-0.6 mm, the bulk density is 0.4 g/ml, and the crushing strength is 20N/grain.
Example 3
Alumina pellets were produced using the catalyst forming apparatus of example 1 except that the inclined channels 4 were angled at 25 ° to the horizontal.
After the slurry of the raw material was dropped, the pellets smoothly passed through the oil-ammonia phase interface, but did not smoothly roll from the inclined channel 4 to the U-shaped column 3 after dropping to the lower end of the U-shaped column short column 2, and the sphericity of the catalyst pellets was inferior to that of example 1.
In the prior art, an aging conveying channel is communicated and connected with a forming and curing column at a certain angle, so that the liquid level balance between the forming and curing column and the aging conveying channel is maintained. The balls primarily cured in the forming curing column uniformly fall on a conveying mesh belt which advances at a constant speed, the mesh belt continuously and uniformly lifts the balls from the curing liquid, then the curing liquid is sprayed out from a spray drying ball outlet channel for recycling, and the sprayed balls are washed by water to enter the next process.
Although the conveyor belt is adopted to realize continuous operation, the drained balls still need to be washed by water to realize transfer when going to the next procedure, and the deformation of gel balls caused by water impact cannot be avoided. The dried catalyst pellets have rough surfaces and are not smooth enough.
Compared with the prior art, the invention has the following advantages: the catalyst forming device realizes forming and aging through the short columns and the long columns of the U-shaped columns, and can continuously produce the catalyst or the carrier by adopting an oil ammonia forming method in cooperation with the ball collecting basket and the lifter, so that the impact of hydraulic ball discharging on the appearance of the catalyst is overcome, the formed catalyst or the carrier has good sphericity, uniform and concentrated particle size, and flexible and simple operation.
The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention, including combinations of various technical features in any other suitable way, and these simple modifications and combinations should also be regarded as the disclosure of the invention, and all fall within the scope of the invention.
Claims (15)
1. A catalyst molding apparatus, comprising:
the ball dropping device (1) comprises a dropping head and a slurry feeding pipe;
the hollow U-shaped column comprises a U-shaped column short column (2) and a U-shaped column long column (3), the U-shaped column short column (2) and the U-shaped column long column (3) are communicated through an inclined channel (4), and the U-shaped column short column (2) is arranged below the ball dropping device (1);
the bottom surfaces of the U-shaped column short column (2) and the inclined channel (4) are slopes with inclined angles, one end of the inclined channel (4) is connected with the U-shaped column short column (2), and the other end of the inclined channel penetrates through the side wall of the U-shaped column long column (3) and extends in the radial direction of the U-shaped column long column (3) to form a convex outlet (41) inside the U-shaped column long column (3);
a ball collecting basket (5) with an opening, wherein the ball collecting basket (5) is positioned right below an outlet (41) in the U-shaped column long column (3);
the lifter (6) is arranged at the top of the U-shaped column long column (3) and connected with the ball collecting basket (5) and used for lifting and moving the ball collecting basket (5).
2. The molding device according to claim 1, wherein the inclined channel (4) has an angle of between 30 and 80 ° with respect to the horizontal plane.
3. The molding device according to claim 2, wherein the inclined channel (4) forms an angle of 45-70 ° with the horizontal plane.
4. The molding apparatus according to any one of claims 1 to 3,
the height of the U-shaped column short column (2) is 50 cm-500 cm, and/or
The height of the U-shaped column long column (3) is 60 cm-600 cm, and/or
The length of the inclined channel (4) is 20 cm-100 cm.
5. The molding apparatus as claimed in any one of claims 1 to 4, wherein the outer wall and the bottom of the ball collecting basket (5) are perforated, and a wire mesh sleeve having a mesh diameter smaller than a target catalyst diameter is provided inside the ball collecting basket.
6. The forming arrangement according to any one of claims 1-5, wherein the dripper of the ball dropper (1) and the slurry feed pipe are connected in a bell and spigot manner.
7. The molding apparatus of claim 6,
the bell and spigot joint is round or square, preferably round; and/or
The inner diameter of the bell socket is 0.5-10 mm, preferably 1-5 mm.
8. The molding apparatus as claimed in any one of claims 1 to 7, wherein the dripper is formed of metal or plastic material and has a dripper tip bore diameter of between 0.3 and 3mm, preferably 0.3 to 1.5 mm.
9. The forming device according to any one of claims 1 to 8, wherein one or more dripper connecting ports are arranged on the dripper (1) and are distributed in an evenly distributed manner, and the dripper connecting ports are spaced more than 5mm apart.
10. The molding apparatus as claimed in any one of claims 1 to 9, wherein the number of the insertion holes on the dripper is 1 to 500, preferably 20 to 200.
11. The molding apparatus according to any one of claims 1 to 10, wherein the dropping device (1) is arranged so that a dropping speed of the dropping device is 10 to 60 drops/cm2·min。
12. The molding apparatus as defined in any one of claims 1 to 11, wherein the lifter (6) is capable of controlling and adjusting a lifting movement speed of the ball collecting basket (5) by a variable frequency motor.
13. The molding apparatus as claimed in one of claims 1 to 12, wherein the upper and lower layers in the U-shaped stub (2) are each provided with an oil phase layer (7) and an ammonia liquid layer (8).
14. The molding apparatus as defined in claim 13, wherein the oil phase layer (7) has a thickness of 0.1 to 10mm and the ammonia liquid layer (8) has a height of 50 to 500 cm.
15. Use of a catalyst shaping device according to any one of claims 1 to 14 in oil ammonia shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011172787.1A CN114505011B (en) | 2020-10-28 | 2020-10-28 | Catalyst forming device and application thereof |
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| CN202011172787.1A CN114505011B (en) | 2020-10-28 | 2020-10-28 | Catalyst forming device and application thereof |
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| CN114505011A true CN114505011A (en) | 2022-05-17 |
| CN114505011B CN114505011B (en) | 2023-08-08 |
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| CN202011172787.1A Active CN114505011B (en) | 2020-10-28 | 2020-10-28 | Catalyst forming device and application thereof |
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| CN (1) | CN114505011B (en) |
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| GB1119589A (en) * | 1965-12-13 | 1968-07-10 | Engelhard Min & Chem | Improvements in or relating to aluminum oxide gels |
| US20020092376A1 (en) * | 2001-01-12 | 2002-07-18 | Akira Nozawa | Method and device for producing ball-shaped metallic particles at least almost equal in diameter, and the ball-shaped metallic particles made by the method |
| CN101632909A (en) * | 2008-07-24 | 2010-01-27 | 中国石油化工股份有限公司 | Ball dropper used for drop ball forming of oxide |
| CN106268537A (en) * | 2016-09-22 | 2017-01-04 | 太原理工大学 | The transient state experimental provision evaluated for catalyst High Temperature High Pressure and method |
| CN109701442A (en) * | 2017-10-25 | 2019-05-03 | 中国石油化工股份有限公司 | Drips ball forming drop ball device and oil ammonia column molding machine |
| CN110560176A (en) * | 2019-08-14 | 2019-12-13 | 常州市范群干燥设备有限公司 | Catalyst carrier balling and drying method and adopted equipment |
| CN111068580A (en) * | 2018-10-22 | 2020-04-28 | 中国石油化工股份有限公司 | Dropping ball forming device and oil ammonia column forming device |
| CN111068579A (en) * | 2018-10-22 | 2020-04-28 | 中国石油化工股份有限公司 | Method for forming dropping ball |
-
2020
- 2020-10-28 CN CN202011172787.1A patent/CN114505011B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1119589A (en) * | 1965-12-13 | 1968-07-10 | Engelhard Min & Chem | Improvements in or relating to aluminum oxide gels |
| US20020092376A1 (en) * | 2001-01-12 | 2002-07-18 | Akira Nozawa | Method and device for producing ball-shaped metallic particles at least almost equal in diameter, and the ball-shaped metallic particles made by the method |
| CN101632909A (en) * | 2008-07-24 | 2010-01-27 | 中国石油化工股份有限公司 | Ball dropper used for drop ball forming of oxide |
| CN106268537A (en) * | 2016-09-22 | 2017-01-04 | 太原理工大学 | The transient state experimental provision evaluated for catalyst High Temperature High Pressure and method |
| CN109701442A (en) * | 2017-10-25 | 2019-05-03 | 中国石油化工股份有限公司 | Drips ball forming drop ball device and oil ammonia column molding machine |
| CN111068580A (en) * | 2018-10-22 | 2020-04-28 | 中国石油化工股份有限公司 | Dropping ball forming device and oil ammonia column forming device |
| CN111068579A (en) * | 2018-10-22 | 2020-04-28 | 中国石油化工股份有限公司 | Method for forming dropping ball |
| CN110560176A (en) * | 2019-08-14 | 2019-12-13 | 常州市范群干燥设备有限公司 | Catalyst carrier balling and drying method and adopted equipment |
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| CN114505011B (en) | 2023-08-08 |
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