Granular activated carbon production preparation processing technology

Abstract

The application discloses a granular activated carbon production preparation processing technology, and particularly relates to the technical field of granular activated carbon production, which comprises the following steps: firstly, washing and drying raw materials, and then grinding and sieving the raw materials; secondly, mixing and kneading the powder raw materials and a binder into plastic materials; thirdly, putting the plastic materials into an extrusion assembly of a forming device, extruding the plastic materials into long strip-shaped materials, laying the long strip-shaped materials on a lower forming assembly, and then cutting and rubbing the long strip-shaped materials into spherical granular materials on the lower forming assembly; fourthly, carbonizing the granular materials; fifthly, activating the carbonized materials; and sixthly, drying the activated materials after water washing to remove surface impurities, so that granular activated carbon is obtained. The preparation processing technology is continuous and has high automation degree, the prepared granular activated carbon is uniform in size and has high quality.

Description

Technical Field

[0001] The present invention relates to the technical field of granular activated carbon production, and more specifically to a production and preparation process of granular activated carbon. Background Art

[0002] Activated carbon is a specially treated carbon with a well-developed pore structure, a large specific surface area, and abundant surface chemical groups, resulting in a strong specific adsorption capacity. The adsorption capacity of activated carbon is related to the size and structure of its pores. Generally speaking, the smaller the particles, the faster the pore diffusion rate, and the stronger the adsorption capacity of the activated carbon.

[0003] Activated carbon is generally classified into two main categories based on its appearance: powdered and granular. Granular activated carbon, which primarily comes in cylindrical and spherical forms, is widely used in drinking water, industrial water, winemaking, waste gas treatment, decolorization, desiccant, and gas purification. It offers advantages such as high mechanical strength, easy regeneration, and low cost.

[0004] The production of granular activated carbon requires the raw materials to be kneaded into a shape and then pelletized. The product is then carbonized and activated to produce the product. Pelletizing equipment is often used to pelletize the formed material. For example, publication number CN215711800U describes a pelletizing equipment for producing wood-based granular activated carbon using the phosphoric acid method, in which shears are used to cut the extruded columnar material. However, because the extruded columnar material is plastic and soft, using a cutter to impact the columnar material can easily result in incomplete particles. Furthermore, the falling particles can collide with the collection frame, which can easily deform the granular material, resulting in uneven and inconsistent granular activated carbon, reducing the quality of the granular activated carbon. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a granular activated carbon production and preparation process, which pre-dries the material during material forming to prevent deformation during material transportation. The prepared granular activated carbon is uniform, consistent in size and of high quality.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a process for producing and preparing granular activated carbon, the specific steps of which are as follows:

[0007] Step 1: Select sawdust, charcoal, palm shell, bagasse and reed as raw materials, wash and dry the raw materials, grind them into powder in a grinder and sieve;

[0008] Step 2: Mix the powdered raw material with the hydroxypropyl methylcellulose adhesive, and heat and knead in a kneader to form a plastic material;

[0009] Step 3: Place the plastic material into the extrusion assembly of the molding equipment, extrude it into long strips of material and spread it on the lower molding assembly, and then the lower molding assembly transports the long strips of material to the driving assembly to cut and knead it into spherical granular materials;

[0010] Step 4: Place the granular material into a carbonization furnace, heat and carbonize it under the protection of inert gas to obtain a carbonized material;

[0011] Step 5: The carbonized material is mixed with a sodium hydroxide activator and placed in an activation furnace for activation treatment under a high-purity nitrogen atmosphere to obtain an activated material;

[0012] Step 6: The activated material is washed with water to remove surface impurities and then dried to obtain granular activated carbon.

[0013] Preferably, the molding equipment includes a frame and a molding mechanism arranged on the top of the frame, the molding mechanism includes a machine platform and a top plate arranged on the top of the machine platform, one side of the machine platform and the top plate are fixedly connected by two columns, and the other side of the machine platform and the top plate are fixedly connected by two vertical plates, and the space enclosed by the machine platform, top plate, columns and vertical plates is provided with an extrusion assembly, a lower molding assembly and a drive assembly, the lower molding assembly is provided at the bottom of the extrusion assembly, and the drive assembly is provided on one side of the extrusion assembly and the lower molding assembly.

[0014] The extrusion assembly includes a material trough for holding plastic material, and the front and rear ends of the material trough are fixedly connected to the two vertical plates through fixed blocks respectively. The top and bottom ends of the material trough are both open, and a discharge plate is provided at the opening at the bottom of the material trough. A plurality of discharge holes penetrating the discharge plate are provided on the discharge plate. A pressure block adapted to the inner cavity of the material trough is provided on the top of the material trough, and a first electric cylinder for driving the pressure block to rise and fall is fixed on the top of the pressure block, and the first electric cylinder is fixed on the top plate.

[0015] Preferably, the discharge plate and the material trough are detachably connected by bolts to facilitate replacement of the discharge plate, and a sealing gasket is provided between the discharge plate and the material trough to seal the discharge plate and the material trough.

[0016] Preferably, a pushing assembly for driving the lower forming assembly to move is provided on the side of the lower forming assembly away from the driving assembly, and the pushing assembly includes a second telescopic rod and a first telescopic rod distributed up and down, and a connecting block is fixedly connected between the first telescopic rod and the second telescopic rod, and the connecting block is rotatably connected to the two vertical plates through a rotating shaft, and the second telescopic rod is rotatably connected to the side of the extrusion assembly close to the extrusion assembly, and the outer end of the movable rod is fixed with a ring and a fixed plate distributed on the left and right, and the rear end of the fixed plate is fixedly connected to the front end of the rear vertical plate, and a spring is fixed between the ring and the fixed plate, and the spring is sleeved on the outside of the movable rod, and the end of the movable rod away from the second telescopic rod is processed with a first inclined surface.

[0017] Preferably, a push block is fixed to the outer end of the piston rod of the first electric cylinder through a connecting rod, and the push block is arranged on one side of the movable rod. A second inclined surface that matches the first inclined surface is processed on the side of the push block close to the movable rod.

[0018] Preferably, the lower forming assembly includes a lower plate, the bottom end of the lower plate is slidably connected to the top of the machine through a slide rail, a first forming plate is fixedly provided on the top of the lower plate, a plurality of semicircular first material discharge troughs are opened on the top of the first forming plate, and guide columns are fixed on the front and rear sides of the top of the first forming plate; a first electric heating tube is installed inside the lower plate for heating and pre-drying the material; a push rod is rotatably connected to the bottom end of the first telescopic rod, and the end of the push rod away from the first telescopic rod is fixedly connected to the side of the lower plate close to the first telescopic rod.

[0019] Preferably, the driving assembly includes a linear module fixed to the bottom of the vertical plate, a second electric cylinder is fixed on the linear module, and the bottom end of the second electric cylinder is connected to the upper forming assembly.

[0020] Preferably, the upper forming assembly includes an upper plate, a second forming plate is fixedly provided at the bottom end of the upper plate, a plurality of semicircular second discharge troughs are provided at the bottom end of the second forming plate, and the first discharge trough and the second discharge trough are combined into a cylindrical trough; guide grooves adapted to the guide columns are provided on the front and rear sides of the bottom end of the second forming plate; a second electric heating tube is installed inside the upper plate for heating and pre-drying the material.

[0021] Preferably, a transverse plate is fixedly provided at the outer end of the second electric cylinder, and a third telescopic rod is fixed between the four corners of the bottom end of the transverse plate and the four corners of the top end of the upper plate respectively.

[0022] Preferably, a material guide trough is fixedly provided on the top of the rear end of the machine, and a heating plate is fixed on the bottom of the inner cavity of the material guide trough.

[0023] Technical effects and advantages of the present invention:

[0024] 1. The present invention prepares granular activated carbon by washing and drying raw materials of sawdust, charcoal, palm shell, bagasse and reed, grinding them into powder and screening them, then kneading the powder raw materials with an adhesive into a plastic material, then cutting and kneading the plastic material into spherical granular materials through a molding device, then carbonizing the granular materials and reactivating them, finally washing them with water to remove surface impurities and drying them. The preparation process of the present invention is continuous and highly automated, and the prepared granular activated carbon is of high quality.

[0025] 2. The present invention sets a molding device in the molding process to extrude the plastic material, and the plastic material is squeezed into a long strip material and spread on the lower molding component. Then the second electric cylinder controls the upper molding component to move downward to cut the long strip material. Then the linear module drives the upper molding component to move backward, so that the second molding plate drives the material to move along the first discharge trough and the second discharge trough. During the movement, the material is kneaded into spherical granular material and then falls into the guide trough. At the same time, in the process of cutting and kneading the material, the first electric heating tube, the second electric heating tube and the heating plate on the guide trough pre-dry the material to prevent deformation during material transportation. The prepared granular activated carbon is uniform, consistent in size and high in quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a process flow chart of the present invention;

[0027] Figure 2 This is an overall front view of the molding equipment of the present invention;

[0028] Figure 3 It is an overall rear view of the molding equipment of the present invention;

[0029] Figure 4 It is a structural diagram of the molding mechanism in the molding equipment of the present invention;

[0030] Figure 5 It is a front view of the molding mechanism in the molding equipment of the present invention;

[0031] Figure 6 It is a structural diagram of the extrusion assembly, lower molding assembly and pushing assembly in the molding equipment of the present invention;

[0032] Figure 7 A bottom view of the material trough in the molding equipment of the present invention;

[0033] Figure 8 It is a cross-sectional view of the material tank in the molding equipment of the present invention;

[0034] Figure 9 A bottom view of a drive assembly in the molding device of the present invention;

[0035] Figure 10 A cross-sectional view of a lower molding assembly and an upper molding assembly in the molding equipment of the present invention;

[0036] Figure 11 This is a schematic diagram of the lower molding assembly moving to the bottom of the upper molding assembly in the molding equipment of the present invention.

[0037] The accompanying drawings are marked as follows: 1 frame, 2 platform, 3 top plate, 4 column, 5 vertical plate;

[0038] 6 extrusion assembly, 61 material trough, 62 fixed block, 63 discharge plate, 64 pressing block, 65 first electric cylinder;

[0039] 7 lower molding assembly, 71 lower plate, 72 first molding plate, 73 guide column, 74 first electric heating tube;

[0040] 8 driving assembly, 81 linear module, 82 second electric cylinder, 83 upper forming assembly, 84 horizontal plate, 85 third telescopic rod, 831 upper plate, 832 second forming plate, 833 guide groove, 834 second electric heating tube;

[0041] 9 pushing assembly, 91 first telescopic rod, 92 second telescopic rod, 93 connecting block, 94 movable rod, 95 fixing plate, 96 collar, 97 spring, 98 pushing block, 99 pushing rod, 910 rotating shaft;

[0042] 10. Material guide chute. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] Refer to the instruction manual Figure 1 The present invention provides a production and preparation process of granular activated carbon, the specific steps of which are as follows:

[0045] Step 1: 30% sawdust, 20% charcoal, 25% palm shell, 15% bagasse and 10% reed bamboo are selected as raw materials, the raw materials are washed and dried, and then ground into powder in a grinder, and then sieved through a 40-mesh sieve.

[0046] Step 2: Mix the powder raw material and the hydroxypropyl methylcellulose adhesive in a mass ratio of 10:1, heat to 80-200° C. in a kneader, and knead for 30-60 minutes to form a plastic material.

[0047] Step 3: Prepare molding equipment, such as Figure 2-3 As shown, the forming equipment includes a frame 1 and a forming mechanism provided on the top of the frame 1, the forming mechanism includes a machine table 2 and a top plate 3 provided on the top of the machine table 2, one side of the machine table 2 and the top plate 3 are fixedly connected by two columns 4, and the other side of the machine table 2 and the top plate 3 are fixedly connected by two vertical plates 5, and the space enclosed by the machine table 2, the top plate 3, the columns 4 and the vertical plates 5 is provided with an extrusion assembly 6, a lower forming assembly 7 and a drive assembly 8, the lower forming assembly 7 is provided at the bottom of the extrusion assembly 6, and the drive assembly 8 is provided on one side of the extrusion assembly 6 and the lower forming assembly 7;

[0048] Specifically, such as Figure 4-8As shown, the extrusion assembly 6 includes a material trough 61 for holding plastic material, and the front and rear ends of the material trough 61 are fixedly connected to the two vertical plates 5 respectively through fixed blocks 62. The top and bottom ends of the material trough 61 are open, and a discharge plate 63 is provided at the opening at the bottom of the material trough 61, and a sealing gasket is provided between the discharge plate 63 and the material trough 61. A plurality of discharge holes penetrating the discharge plate 63 are provided on the discharge plate 63. A pressure block 64 adapted to the inner cavity of the material trough 61 is provided on the top of the material trough 61. A first electric cylinder 65 for driving the pressure block 64 to rise and fall is fixed to the top of the pressure block 64. The first electric cylinder 65 is fixed on the top plate 3, and the first electric cylinder 65 drives the pressure block 64 to move downward to extrude the plastic material into a long strip of material.

[0049] Then, if Figure 3-6 As shown, a pushing assembly 9 for driving the lower forming assembly 7 to move is provided on a side of the lower forming assembly 7 away from the driving assembly 8. The pushing assembly 9 includes a second telescopic rod 92 and a first telescopic rod 91 distributed vertically. A connecting block 93 is fixedly connected between the first telescopic rod 91 and the second telescopic rod 92. The connecting block 93 is rotatably connected to the two vertical plates 5 via a rotating shaft 910.

[0050] The second telescopic rod 92 is rotatably connected to the side of the extrusion assembly 6 with a movable rod 94, and the outer end of the movable rod 94 is fixed with a ring 96 and a fixed plate 95 distributed on the left and right, and the rear end of the fixed plate 95 is fixedly connected to the front end of the rear vertical plate 5, and a spring 97 is fixed between the ring 96 and the fixed plate 95. The spring 97 is sleeved on the outside of the movable rod 94, and the end of the movable rod 94 away from the second telescopic rod 92 is processed with a first inclined surface, and the outer end of the piston rod of the first electric cylinder 65 is fixed with a push block 98 through a connecting rod, and the push block 98 is provided on one side of the movable rod 94, and the side of the push block 98 close to the movable rod 94 is processed with a second inclined surface adapted to the first inclined surface.

[0051] like Figure 10 As shown, the lower forming assembly 7 includes a lower plate 71, the bottom end of the lower plate 71 is slidably connected to the top of the machine 2 through a slide rail, the bottom end of the first telescopic rod 91 is rotatably connected to a push rod 99, and the end of the push rod 99 away from the first telescopic rod 91 is fixedly connected to the side of the lower plate 71 close to the first telescopic rod 91, and a first forming plate 72 is fixedly provided on the top of the lower plate 71. A plurality of semicircular first discharge troughs are provided on the top of the first forming plate 72, and a first electric heating tube 74 is installed inside the lower plate 71 for pre-drying the granular material.

[0052] like Figure 4 、 5, 6, 9 and 10, the driving assembly 8 includes a linear module 81 fixed to the bottom of the vertical plate 5, a second electric cylinder 82 is fixed on the linear module 81, and the bottom end of the second electric cylinder 82 is connected to the upper forming assembly 83, the upper forming assembly 83 includes an upper plate 831, a second forming plate 832 is fixed to the bottom end of the upper plate 831, a plurality of semicircular second discharge troughs are opened at the bottom end of the second forming plate 832, the first discharge trough and the second discharge trough are combined into a cylindrical trough, and a second electric heating tube 834 is installed inside the upper plate 831 for pre-drying the granular material.

[0053] The plastic material is put into the material trough 61, and the first electric cylinder 65 drives the pressing block 64 to move downward to extrude the plastic material. The plastic material passes through the discharge hole on the discharge plate 63 and falls on the lower forming assembly 7 in the form of a long strip. At the same time, the first electric cylinder 65 drives the pushing block 98 to move downward, so that the pushing block 98 pushes the movable rod 94 to move to the right, and drives the collar 96 to move the extrusion spring 97. The movable rod 94 moves to the right and pushes the second telescopic rod 92, the connecting block 93 and the first telescopic rod 91 to rotate around the fixed plate 95, so that the end of the first telescopic rod 91 close to the pushing rod 99 pushes the pushing rod 99 to move left. The pushing rod 99 pushes the lower forming assembly 7 to slide to the left through the slide rail, so that when the long strip material falls on the lower forming assembly 7, the lower forming assembly 7 moves to the left, so that the long strip material is spread on the lower forming assembly 7.

[0054] When the lower molding assembly 7 moves to the left to the extreme position, the lower molding assembly 7 is directly below the upper molding assembly 83, and the lower molding assembly 7 is directly in front of the guide trough 10 fixed on the top of the rear end of the machine 2. Figure 11 As shown, the second electric cylinder 82 then controls the upper forming assembly 83 to move downward and contact the first forming plate 72, so that the second forming plate 832 cuts the long strip material. At this time, the first discharge trough of the first forming plate 72 and the second discharge trough of the second forming plate 832 are combined into a cylindrical material trough. The long strip material is cut into cylindrical materials and then falls into the cylindrical material trough. The upper forming assembly 83 is then driven backward by the linear module 81, so that the second forming plate 832 drives the cylindrical materials to move backward along the cylindrical material trough. During the backward movement, the cylindrical materials are rolled into spherical granular materials. Then, the granular materials fall into the guide trough 10 and are guided to the next step by the guide trough 10.

[0055] During the process of cutting and kneading the material, the first electric heating tube 74 on the lower forming component 7, the second electric heating tube 834 on the upper forming component 83 and the heating plate on the material guide trough 10 pre-dry the material to prevent deformation during material transportation.

[0056] Further, the discharge plate 63 and the material groove 61 are detachably connected through bolts, so that different discharge plates 63 can be replaced, the discharge hole inner diameters of different discharge plates 63 are different, so that the plastic material can be extruded into long strip-shaped material with different diameters, so as to prepare granular activated carbon with different diameters;

[0057] The first forming plate 72 is fixed with guide columns 73 on the front and rear sides of the top end, and the second forming plate 832 is provided with guide grooves 833 matched with the guide columns 73 on the front and rear sides of the bottom end, so as to guide the movement of the second forming plate 832 along the first forming plate 72.

[0058] The outer end of the second electric cylinder 82 is fixed with a horizontal plate 84, and the third telescopic rods 85 are fixed between the top end corners of the upper plate 831 and the bottom end corners of the horizontal plate 84, so as to guide the up-and-down movement of the upper plate 831.

[0059] Step four: the granular material is placed in a carbonization furnace, and is carbonized at 300-500 DEG C for 2-4 h under the protection of inert gas, so as to obtain carbonized material.

[0060] Step five: the carbonized material is mixed with sodium hydroxide activator according to the mass ratio of 10:1, and is placed in an activation furnace, so as to obtain activated material under the activation treatment in a high-purity nitrogen atmosphere.

[0061] Step six: the activated material is dried after water washing to remove surface impurities, so as to obtain granular activated carbon.

[0062] The control system of the electrical equipment of the application adopts an existing automatic control system, which will not be described further in the text.

[0063] Finally: the above only for the preferred embodiments of the application, and not for limiting the application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application, should be included in the protection scope of the application.

Claims

1. A process for producing and preparing granular activated carbon, characterized in that: The specific steps are as follows: Step 1: Select sawdust, charcoal, palm shell, bagasse and reed as raw materials, wash and dry the raw materials, grind them into powder in a grinder and sieve; Step 2: Mix the powdered raw material with the hydroxypropyl methylcellulose adhesive, and heat and knead in a kneader to form a plastic material; Step 3: Prepare a molding device, the molding device includes a frame (1) and a molding mechanism arranged on the top of the frame (1), the molding mechanism includes a machine (2) and a top plate (3) arranged on the top of the machine (2), one side of the machine (2) and the top plate (3) are fixedly connected by two columns (4), and the other side of the machine (2) and the top plate (3) are fixedly connected by two vertical plates (5), and an extrusion component (6), a lower molding component (7) and a driving component (8) are arranged in a space surrounded by the machine (2), the top plate (3), the columns (4) and the vertical plates (5), the lower molding component (7) is arranged at the bottom of the extrusion component (6), and the driving component (8) is arranged on one side of the extrusion component (6) and the lower molding component (7); The plastic material is placed in the extrusion assembly (6) of the molding equipment, extruded into a long strip material and spread on the lower molding assembly (7), and then the lower molding assembly (7) transports the long strip material to the driving assembly (8) to cut and knead the material into a spherical granular material. At the same time, the material is pre-dried during the cutting and kneading process to increase the hardness of the material and prevent deformation during the material transportation; A pushing assembly (9) for driving the lower forming assembly (7) to move is provided on a side of the lower forming assembly (7) away from the driving assembly (8), the pushing assembly (9) comprising a second telescopic rod (92) and a first telescopic rod (91) distributed above and below, and a connecting block (93) is fixedly connected between the first telescopic rod (91) and the second telescopic rod (92), the connecting block (93) being rotatably connected to the two vertical plates (5) via a rotating shaft (910); The second telescopic rod (92) is rotatably connected to a movable rod (94) on one side close to the extrusion assembly (6); the outer end of the movable rod (94) is fixedly provided with a collar (96) and a fixed plate (95) distributed on the left and right, and the rear end of the fixed plate (95) is fixedly connected to the front end of the rear side vertical plate (5); a spring (97) is fixed between the collar (96) and the fixed plate (95); the spring (97) is sleeved on the outer side of the movable rod (94); and the end of the movable rod (94) away from the second telescopic rod (92) is processed with a first inclined surface; The extrusion assembly (6) of the molding equipment includes a material trough (61) for holding plastic material, a pressing block (64) adapted to the inner cavity of the material trough (61) is provided on the top of the material trough (61), a first electric cylinder (65) for driving the pressing block (64) to move up and down is fixedly provided on the top of the pressing block (64), and the first electric cylinder (65) is fixedly provided on the top plate (3); A push block (98) is fixed to the outer end of the piston rod of the first electric cylinder (65) via a connecting rod, and the push block (98) is arranged on one side of the movable rod (94), and a second inclined surface adapted to the first inclined surface is processed on a side of the push block (98) close to the movable rod (94); The lower forming assembly (7) comprises a lower plate (71), the bottom end of the first telescopic rod (91) is rotatably connected to a push rod (99), and one end of the push rod (99) away from the first telescopic rod (91) is fixedly connected to a side of the lower plate (71) close to the first telescopic rod (91); Step 4: Place the granular material into a carbonization furnace, heat and carbonize it under the protection of inert gas to obtain a carbonized material; Step 5: The carbonized material is mixed with a sodium hydroxide activator and placed in an activation furnace for activation treatment under a high-purity nitrogen atmosphere to obtain an activated material; Step 6: The activated material is washed with water to remove surface impurities and then dried to obtain granular activated carbon.

2. The process for producing granular activated carbon according to claim 1, characterized in that: The front and rear ends of the material trough (61) are fixedly connected to the two vertical plates (5) respectively through fixed blocks (62). The top and bottom ends of the material trough (61) are both open, and a discharge plate (63) is provided at the opening at the bottom of the material trough (61). The discharge plate (63) is provided with a plurality of discharge holes that pass through the discharge plate (63).

3. The process for producing and preparing granular activated carbon according to claim 2, characterized in that: The discharge plate (63) and the material trough (61) are detachably connected via bolts, and a sealing gasket is provided between the discharge plate (63) and the material trough (61).

4. The process for producing and preparing granular activated carbon according to claim 1, characterized in that: The bottom end of the lower plate (71) is slidably connected to the top end of the machine (2) via a slide rail, and a first forming plate (72) is fixedly provided on the top end of the lower plate (71). A plurality of semicircular first material discharge troughs are provided on the top end of the first forming plate (72), and guide pillars (73) are fixed on both the front and rear sides of the top end of the first forming plate (72); A first electric heating tube (74) is installed inside the lower plate (71).

5. The process for producing and preparing granular activated carbon according to claim 4, characterized in that: The driving assembly (8) comprises a linear module (81) fixedly arranged at the bottom of the vertical plate (5); a second electric cylinder (82) is fixed on the upper portion of the linear module (81); and an upper molding assembly (83) is connected to the bottom end of the second electric cylinder (82).

6. The process for producing and preparing granular activated carbon according to claim 5, characterized in that: The upper forming assembly (83) comprises an upper plate (831), a second forming plate (832) is fixedly provided at the bottom end of the upper plate (831), a plurality of semicircular second discharge troughs are provided at the bottom end of the second forming plate (832), and the first discharge trough and the second discharge trough are combined to form a cylindrical trough; The second forming plate (832) is provided with guide grooves (833) adapted to the guide pillars (73) on both the front and rear sides of the bottom end; A second electric heating tube (834) is installed inside the upper plate (831).

7. The process for producing and preparing granular activated carbon according to claim 5, characterized in that: A transverse plate (84) is fixedly provided at the outer end of the second electric cylinder (82), and third telescopic rods (85) are fixed between the four corners of the bottom end of the transverse plate (84) and the four corners of the top end of the upper plate (831).

8. The process for producing and preparing granular activated carbon according to claim 1, characterized in that: A material guide trough (10) is fixedly provided on the top of the rear end of the machine (2), and a heating plate is fixed on the bottom of the inner cavity of the material guide trough (10).

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