Pulping device and pulping process for acrylonitrile catalyst production

Abstract

The invention relates to the technical field of acrylonitrile catalyst production, in particular to a pulping device and a pulping process for acrylonitrile catalyst production, the pulping device comprises a homogenizing mechanism, the homogenizing mechanism comprises a tank body and further comprises a sealing cover arranged above the tank body and used for feeding, a stirring pulping assembly used for stirring slurry is arranged above the sealing cover, and the stirring pulping assembly is arranged above the tank body and used for stirring the slurry. The slurry extrusion device comprises a tank body and an extrusion box arranged below the tank body, an extrusion plate used for pushing slurry and a driving assembly used for driving the extrusion plate are arranged in the extrusion box, and the extrusion plate can extrude the slurry in the extrusion box; the extruded slurry can be discharged into the tank body through the first guide pipeline to realize circulating conveying of the slurry, so that one-way circulating operation by adopting a circulating pump is avoided, the maintenance frequency of each circulating part is reduced, synchronous circulation of the slurry on the left side and the right side of the tank body can be realized in a linkage manner, and the production efficiency is improved. And compared with a traditional circulating pump, one-way circulation is more efficient.

Description

Technical Field

[0001] The invention relates to the technical field of acrylonitrile catalyst production, in particular to a pulping device and a pulping process for acrylonitrile catalyst production. Background Art

[0002] Slurry plays a vital role in the production process of acrylonitrile catalyst. It is usually mixed with multiple raw materials. After mixing, these raw materials need to form a slurry with a certain viscosity and fluidity so that they can be evenly coated on the carrier in the subsequent processing process and form a uniform catalyst layer during the calcination process. In the production process of acrylonitrile catalyst, the fluidity of the slurry needs to be strictly controlled. In the existing slurry making device, a circulating pump is usually used to extract the slurry from the slurry making device and re-inject it during the slurry stirring and mixing process. At the same time, the slurry is sheared and dispersed through a slurry homogenizing plate, so that the particles in the slurry are finer and dispersed more evenly. However, the following problems exist in the actual mixing process; First, the slurry often contains a large number of solid particles, which will cause wear to the flow-through parts of the pump (such as the impeller, pump casing, etc.) during the circulation process. Wear will lead to a decrease in pump performance, such as reduced flow and head, and in severe cases may even cause the pump body to rupture or leak, thereby increasing the maintenance frequency of the pulping device. Secondly, the method of using a circulating pump to extract the slurry and re-inject it can only achieve the effect of cyclic shearing and dispersion on one side of the pulping device, and cannot implement the slurry homogenization operation of left-side unidirectional cyclic shearing and right-side reciprocating cyclic multiple shearing on the pulping device, thereby affecting the homogenization effect of the slurry. Finally, the unidirectional circulating slurry cannot be accelerated to increase the circulation rate of the unidirectional circulating slurry, thereby affecting the slurry homogenization efficiency of the entire pulping device. Therefore, we propose a pulping device and pulping process for acrylonitrile catalyst production. Summary of the invention

[0003] In view of the fact that the flow-passing parts of the pump may be worn during the circulation process in the above-mentioned or prior art processes, the wear may lead to a decline in the performance of the pump, such as a decrease in flow rate, a decrease in head, etc. In severe cases, it may even lead to a rupture or leakage of the pump body, thereby increasing the maintenance frequency of the pulping device. Secondly, the method of extracting the slurry and re-injecting it with a circulating pump can only achieve the effect of circulating shear and dispersion on one side of the pulping device, and cannot implement the slurry homogenization operation of unidirectional circulating shearing on the left side and reciprocating circulating multiple shearing on the right side of the pulping device, thereby affecting the homogenization effect of the slurry. Finally, the unidirectional circulating slurry cannot be accelerated to increase the circulation rate of the unidirectional circulating slurry, thereby affecting the slurry homogenization efficiency of the entire pulping device. The present invention is proposed.

[0004] Therefore, an object of the present invention is to provide a slurrying device for the production of acrylonitrile catalyst.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: A pulping device for acrylonitrile catalyst production, comprising a homogenizing mechanism, comprising a tank body, and also comprising a sealing cover arranged above the tank body for feeding, a stirring pulping assembly for stirring the slurry is arranged above the sealing cover, and an extrusion box is arranged below the tank body, an extrusion plate for pushing the slurry and a driving assembly for driving the extrusion plate are arranged inside the extrusion box, a unidirectional homogenizing assembly for unidirectional circulation of the slurry is arranged on one side of the extrusion box close to the driving assembly, and also comprising a reciprocating homogenizing assembly for reciprocating circulation of the slurry symmetrically arranged with the unidirectional homogenizing assembly, a first guide pipe for conveying the slurry is arranged on one side of the extrusion box, an acceleration shell is arranged in the middle of the first guide pipe, an acceleration mechanism is arranged in the inner cavity of the acceleration shell, and the acceleration mechanism comprises a rotating assembly arranged in the acceleration shell for accelerating the conveying of the slurry, and a collision assembly arranged on the inner wall of the acceleration shell for colliding and shearing the slurry.

[0006] As a preferred embodiment of the pulping device for acrylonitrile catalyst production of the present invention, the stirring pulping assembly includes a stirring motor arranged in the middle above the sealing cover, a stirring rod is installed at the output end of the stirring motor, and the stirring rod is arranged in the middle of the inner cavity of the tank body, the edge of the sealing cover is detachably connected to the upper edge of the tank body by a snap, the lower end of the tank body is provided with a support seat for support, and the extrusion box is installed above the support seat.

[0007] As a preferred solution of the pulping device for acrylonitrile catalyst production of the present invention, the driving assembly includes a servo motor arranged above the support seat, a screw is installed at the output end of the servo motor, one end of the screw is rotatably connected to the inner wall of the extrusion box through a sealed bearing, the inner cavity size of the extrusion box is matched with the size of the extrusion plate, rubber pads are arranged on both side edges of the extrusion plate, and the rubber pads are fitted with the inner wall of the extrusion box, a screw sleeve is fixedly installed in the middle of the extrusion plate, the size of the screw is matched with the size of the screw sleeve, and the screw is threadedly connected to the screw sleeve, a slider is arranged in the middle of the lower end of the extrusion plate, a slide groove is opened at the lower end of the inner cavity of the extrusion box, and the slider is slidably connected to the slide groove.

[0008] As a preferred embodiment of the pulping device for acrylonitrile catalyst production of the present invention, the one-way homogenization component includes a one-way valve pipeline arranged below the tank body and close to the first guide pipeline, the upper end of the one-way valve pipeline is connected to the lower end of the tank body, the lower end of the one-way valve pipeline is connected to the upper end of the extrusion box, the side of the extrusion box close to the servo motor is connected to the lower end of the first guide pipeline, the reciprocating homogenization component includes a second guide pipeline arranged on the other side of the tank body, the lower end of the second guide pipeline is connected to the side of the extrusion box away from the servo motor, the middle part of the second guide pipeline is connected to the third guide pipeline, the ends of the first guide pipeline, the second guide pipeline and the third guide pipeline are all connected to a funnel cover, and the other side of the funnel cover is connected to the tank body.

[0009] As a preferred embodiment of the pulping device for acrylonitrile catalyst production of the present invention, the inner wall of the tank body is provided with a plurality of slurry homogenization plates, the slurry homogenization plates correspond to the funnel covers one by one, and the funnel covers are communicated with the slurry homogenization plates, a second one-way valve is provided at the upper end of the second guide pipe, a first one-way valve is provided in the middle of the third guide pipe, and the flow directions of the first one-way valve and the second one-way valve are opposite.

[0010] As a preferred solution of the pulping device for acrylonitrile catalyst production of the present invention, the rotating component includes a fixed rod arranged inside the acceleration shell, a plurality of fan blades are arranged in the middle of the fixed rod, and the fan blades are distributed in a ring shape, the upper and lower ends of the acceleration shell are respectively connected to the first guide pipe, a first pulley is fixedly installed on the side of the fixed rod close to the servo motor, a second pulley is fixedly installed on the end of the screw rod away from the second guide pipe, and the first pulley and the second pulley are connected by a transmission belt.

[0011] As a preferred solution of the pulping device for acrylonitrile catalyst production of the present invention, the collision assembly includes thin rods arranged on the inner wall of the acceleration shell, and the thin rods are equidistantly distributed, the ends of the thin rods are integrally formed with protrusions, and the surfaces of the protrusions are provided with multiple holes, and the holes are irregularly distributed.

[0012] As a preferred embodiment of the acrylonitrile catalyst production pulping process of the present invention, wherein: S1. Turn on the servo motor, and the screw drives the extrusion plate to move to the left. The extrusion plate extrudes and conveys the slurry on the left side of the extrusion box, and shears and disperses the slurry through the slurry homogenizing plate on the first guide pipe; S2. The extrusion plate moves to the left, which generates negative pressure on the right side of the extrusion box. The negative pressure draws the slurry on the right side of the tank into the extrusion box through the second guide pipe and the third guide pipe, and shears and disperses the slurry drawn into the extrusion box. S3, at the same time, the rotation of the screw rod drives the fixed rod to rotate, so that the acceleration shell accelerates and pre-homogenizes the slurry passing through the first guide pipe; S4, the extrusion plate is then moved to the right to reset, and the sheared and dispersed slurry is returned to the tank body for remixing. The slurry is homogenized by reciprocating multiple times, thereby ensuring the uniformity of the slurry in the tank body.

[0013] Beneficial effects of the pulping device for acrylonitrile catalyst production of the present invention: The present invention can enable the extrusion plate to squeeze the slurry in the extrusion box, and the squeezed slurry will be discharged into the tank body through the first guide pipe to realize the slurry circulation transportation, thereby avoiding the operation of using a circulation pump for one-way circulation. In normal maintenance, only the extrusion plate and the rubber pad need to be replaced regularly, thereby reducing the maintenance frequency of each circulation component. In the process of conveying the slurry on the left side of the tank body, the slurry on the right side of the tank body can be sucked, thereby realizing the synchronous circulation of the slurry on the left and right sides of the tank body in a linked manner. Compared with the one-way circulation of the traditional circulation pump, it is more efficient, and can ensure the circulation of the slurry on both sides of the tank body, reducing the situation of slurry leakage.

[0014] It is also possible to perform the first shearing and dispersing treatment through the slurry homogenizing plate connected to the third guide pipe when entering the extrusion box, and then perform the second shearing and dispersing treatment through the slurry homogenizing plate connected to the second guide pipe during the discharge process from the second guide pipe, thereby achieving a reciprocating multiple shearing effect on the slurry on the right side of the tank body, thereby achieving the circulation and multiple shearing and dispersing of the slurry on the left and right sides of the tank body during one reciprocating motion of the extrusion plate, thereby improving the efficiency of the homogenizing treatment of the slurry inside the tank body.

[0015] The slurry can also be accelerated from the lower inlet of the acceleration shell to the upper outlet of the acceleration shell, thereby forming a higher flow rate, and then speeding up the slurry passing through the first guide pipe, so that the slurry quickly passes through the slurry homogenization plate connected to the first guide pipe, and then the relative movement speed between the slurry and the homogenization plate is increased, thereby enhancing the shear effect on the slurry, thereby ensuring the circulating shear effect of the slurry on the left side.

[0016] The slurry can be homogenized for the first time in the acceleration shell. In addition, the convex points can also change the flow speed and direction of the slurry, further increasing the turbulence and mixing effects inside it, so that the slurry can be homogenized pre-treated in the acceleration shell, and then pass through the slurry homogenization plate connected to the first guide pipe again, thereby realizing two homogenization treatments of the first guide pipe's one-way circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the right side three-dimensional structure of a pulping device used in the production of acrylonitrile catalyst.

[0019] Figure 2 This is a schematic diagram of the left side three-dimensional structure of a pulping device used for acrylonitrile catalyst production.

[0020] Figure 3 It is a schematic diagram of the three-dimensional cross-sectional structure of a pulping device used in the production of acrylonitrile catalyst.

[0021] Figure 4 It is a schematic diagram of the front cross-sectional structure of a pulping device used for the production of acrylonitrile catalyst.

[0022] Figure 5 This is a schematic diagram of the internal structure of the tank of a pulping device used in the production of acrylonitrile catalyst.

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the drive components of a pulping device used in the production of acrylonitrile catalyst.

[0024] Label: 100, homogenizing mechanism; 101, support seat; 102, tank body; 103, sealing cover; 104, stirring motor; 105, stirring rod; 106, extrusion box; 107, servo motor; 108, screw rod; 109, one-way valve pipeline; 110, extrusion plate; 111, rubber pad; 112, slide groove; 113, slider; 114, screw rod sleeve; 115, first guide pipeline; 116, Funnel cover; 117, slurry homogenization plate; 118, second guide pipe; 119, third guide pipe; 120, first one-way valve; 121, second one-way valve; 122, discharge valve pipe; 200, acceleration mechanism; 201, acceleration shell; 202, fixing rod; 203, first pulley; 204, second pulley; 205, transmission belt; 206, fan blade; 207, thin rod; 208, bump. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Example 1, reference Figures 1 to 3 , which is the first embodiment of the present invention, provides a pulping device for acrylonitrile catalyst production, which can achieve the extrusion and conveying effect of the slurry, avoid the operation of one-way circulation using a circulating pump, reduce the maintenance frequency of each circulating component, and can implement slurry homogenization operations of left-side one-way circulation shearing and right-side reciprocating circulation multiple shearing on the pulping device during the conveying process, thereby improving the homogenization effect of the slurry, including a homogenizing mechanism 100, which includes a tank body 102, and also includes a sealing cover 103 arranged above the tank body 102 for feeding, a stirring pulping component for stirring the slurry is arranged above the sealing cover 103, and an extrusion box 106 arranged below the tank body 102, the inner The extrusion box 106 is provided with an extrusion plate 110 for pushing the slurry, and a driving component for driving the extrusion plate 110. A unidirectional homogenization component for unidirectional circulation of the slurry is provided on the side of the extrusion box 106 close to the driving component. It also includes a reciprocating homogenization component for reciprocating circulation of the slurry symmetrically arranged with the unidirectional homogenization component. A first guide pipe 115 for conveying the slurry is provided on one side of the extrusion box 106. An acceleration shell 201 is provided in the middle of the first guide pipe 115. An acceleration mechanism 200 is provided in the inner cavity of the acceleration shell 201. The acceleration mechanism 200 includes a rotating component arranged in the acceleration shell 201 for accelerating the conveying of the slurry, and a collision component arranged on the inner wall of the acceleration shell 201 for colliding and shearing the slurry.

[0029] In this embodiment, the slurry that has been initially stirred and mixed in the left side of the tank body 102 is discharged into the extrusion box 106 through the one-way valve pipeline 109, and then the extrusion plate 110 is driven and controlled by the driving component, so that the extrusion plate 110 squeezes the slurry in the extrusion box 106, and the squeezed slurry is discharged into the tank body 102 through the first guide pipeline 115 to realize the slurry circulation transportation, thereby avoiding the operation of one-way circulation using a circulation pump. In normal maintenance, it is only necessary to regularly replace the extrusion plate 110 and the rubber pad 111. , thereby reducing the maintenance frequency of each circulating component, and when the extrusion plate 110 moves to the left for one-way circulation transportation, the extrusion plate 110 will generate negative pressure on the right side of the extrusion box 106, and then the slurry on the right side of the tank 102 will be drawn into the extrusion box 106 again through the reciprocating homogenization component, and each time the slurry is transported, it will pass through the slurry homogenization plate 117, so that during the slurry transportation process, the slurry making device is subjected to slurry homogenization operations of one-way circulation shearing on the left side and reciprocating circulation multiple shearing on the right side, thereby improving the homogenization effect of the slurry.

[0030] Specifically, the stirring pulping assembly includes a stirring motor 104 arranged in the middle above the sealing cover 103, a stirring rod 105 is installed at the output end of the stirring motor 104, and the stirring rod 105 is arranged in the middle of the inner cavity of the tank body 102, the edge of the sealing cover 103 is detachably connected to the upper edge of the tank body 102 by a snap, and a support seat 101 is provided at the lower end of the tank body 102 for support, and an extrusion box 106 is installed above the support seat 101.

[0031] In this embodiment, the stirring motor 104 is detachably mounted on the upper middle part of the sealing cover 103, and the extrusion box 106 is fixedly mounted on the upper part of the support seat 101 by welding. When making pulp, the sealing cover 103 is first opened to put the material into the tank body 102, and then the stirring motor 104 is turned on. The stirring motor 104 drives the stirring rod 105 to rotate, so that the stirring rod 105 performs preliminary mixing of the material in the tank body 102 to prepare for the next step of slurry homogenization. At the same time, during the slurry homogenization cycle, the stirring rod 105 continues to work, and then the homogenized slurry is further mixed. By mixing again, the uniformity of the slurry can be further improved.

[0032] Furthermore, the driving assembly includes a servo motor 107 arranged above the support seat 101, and a screw 108 is installed at the output end of the servo motor 107. One end of the screw 108 is rotatably connected to the inner wall of the extrusion box 106 through a sealed bearing. The inner cavity size of the extrusion box 106 is adapted to the size of the extrusion plate 110. Rubber pads 111 are provided on both side edges of the extrusion plate 110, and the rubber pads 111 fit the inner wall of the extrusion box 106. A screw sleeve 114 is fixedly installed in the middle of the extrusion plate 110. The size of the screw 108 is adapted to the size of the screw sleeve 114, and the screw 108 is threadedly connected to the screw sleeve 114. A slider 113 is provided in the middle of the lower end of the extrusion plate 110, and a slide groove 112 is provided at the lower end of the inner cavity of the extrusion box 106, and the slider 113 is slidably connected to the slide groove 112.

[0033] In this embodiment, the servo motor 107 is connected to the support seat 101 in a detachable manner, the rubber pad 111 is connected to the extrusion plate 110 by gluing, and the slider 113 is fixedly connected to the middle part of the lower end of the extrusion plate 110 by welding. The slurry that has been initially stirred and mixed in the left side of the tank body 102 is discharged to the extrusion box 106 through the one-way valve pipeline 109. At this time, the extrusion plate 110 is at the rightmost side of the extrusion box 106. After the extrusion box 106 is filled with slurry, the servo motor 107 is controlled to rotate forward, and the servo motor 107 drives the screw rod 108 to rotate. The screw rod 108 cooperates with the screw rod sleeve 114 to drive the extrusion plate 110 to move leftward, and the extrusion plate 110 extrude and convey the slurry in the extrusion box 106. At the same time, the rubber pads 111 bonded on both sides of the extrusion plate 110 ensure the fit between the extrusion plate 110 and the inner wall of the extrusion box 106, thereby ensuring the extrusion plate 110's extrusion and conveying effect on the slurry inside the extrusion box 106. At the same time, the slider 113 cooperates with the slide groove 112 to ensure the stability of the extrusion plate 110 moving left and right inside the extrusion box 106, thereby ensuring the extrusion and conveying efficiency of the slurry.

[0034] Among them, the one-way homogenization component includes a one-way valve pipe 109 arranged on the side of the first guide pipe 115 below the tank body 102, the upper end of the one-way valve pipe 109 is connected to the lower end of the tank body 102, the lower end of the one-way valve pipe 109 is connected to the upper end of the extrusion box 106, and the side of the extrusion box 106 close to the servo motor 107 is connected to the lower end of the first guide pipe 115. The reciprocating homogenization component includes a second guide pipe 118 arranged on the other side of the tank body 102, the lower end of the second guide pipe 118 is connected to the side of the extrusion box 106 away from the servo motor 107, the middle part of the second guide pipe 118 is connected to the third guide pipe 119, and the ends of the first guide pipe 115, the second guide pipe 118 and the third guide pipe 119 are all connected to the funnel cover 116, and the other side of the funnel cover 116 is connected to the tank body 102.

[0035] In this embodiment, when the extrusion plate 110 moves to the left, the extrusion plate 110 generates negative pressure on the right side of the extrusion box 106. The negative pressure draws the slurry on the right side of the tank body 102 into the second guide pipe 118 through the third guide pipe 119, and then discharges the slurry into the right side of the extrusion box 106 through the second guide pipe 118. In the process of conveying the slurry on the left side of the tank body 102, the slurry on the right side of the tank body 102 is sucked, thereby realizing the synchronous circulation of the slurry on the left and right sides of the tank body 102 in a linked manner, which is more efficient than the one-way circulation of the traditional circulation pump, and can ensure the circulation of the slurry on both sides of the tank body 102, reducing the situation of slurry leakage, and cooperating with the rotating stirring rod 105, thereby ensuring the tank body 1 02, and the first guide pipe 115, the second guide pipe 118 and the third guide pipe 119 are all equipped with a funnel cover 116, so as to ensure that the slurry can pass through the slurry homogenization plate 117 in a large range, thereby improving the shearing and dispersion effects of the circulating slurry, thereby ensuring the uniformity of the slurry. When the extrusion plate 110 moves to the right and resets, the extrusion plate 110 will generate negative pressure on the left side of the extrusion box 106, thereby assisting the one-way valve pipe 109 to quickly draw the slurry in the tank body 102 into the extrusion box 106. At the same time, when the extrusion plate 110 moves to the right, it will extrude and transport the slurry on the right side of the extrusion box 106, and then shear the slurry again.

[0036] Preferably, the inner wall of the tank body 102 is provided with a plurality of slurry homogenization plates 117, the slurry homogenization plates 117 correspond one-to-one to the funnel covers 116, and the funnel covers 116 are communicated with the slurry homogenization plates 117, a second one-way valve 121 is provided at the upper end of the second guide pipe 118, a first one-way valve 120 is provided in the middle of the third guide pipe 119, and the flow directions of the first one-way valve 120 and the second one-way valve 121 are opposite.

[0037] In this embodiment, the slurry homogenizing plate 117 is detachably mounted on the inner wall of the tank 102. During the circulation of the slurry by the first guide pipe 115, the second guide pipe 118 and the third guide pipe 119, the slurry will pass through the slurry homogenizing plate 117. The specific channels and gaps evenly distributed on the slurry homogenizing plate 117 will produce a strong extrusion and shearing effect on the slurry, thereby achieving shearing and dispersion of the slurry. In addition, the slurry is subjected to unidirectional cyclic shearing on the left side of the extrusion box 106, and the slurry on the right side of the extrusion box 106 will achieve two slurry shearing and dispersion processes. When entering the extrusion box 106, the slurry is first subjected to the first slurry homogenizing plate 117 connected to the third guide pipe 119. After shearing and dispersing treatment, during the discharge from the second guide pipe 118, the slurry will be subjected to a second shearing and dispersing treatment through the slurry homogenizing plate 117 connected to the second guide pipe 118, thereby realizing the reciprocating circulation and multiple shearing effects on the slurry on the right side of the tank body 102, thereby realizing the circulation and multiple shearing and dispersion of the slurry on the left and right sides of the tank body 102 during one reciprocating motion of the extrusion plate 110, thereby improving the homogenizing treatment efficiency of the slurry inside the tank body 102, and through the cooperation of the first one-way valve 120 and the second one-way valve 121, it is ensured that when the slurry enters the extrusion box 106, it enters through the third guide pipe 119, and when it circulates to the tank body 102, it is discharged into the tank body 102 through the second guide pipe 118.

[0038] When in use, when making pulp, first open the sealing cover 103 and put the material into the tank body 102, then turn on the stirring motor 104, the stirring motor 104 drives the stirring rod 105 to rotate, so that the stirring rod 105 preliminarily mixes the material in the tank body 102, and then discharges the preliminarily stirred and mixed slurry in the left side of the tank body 102 to the extrusion box 106 through the one-way valve pipeline 109. At this time, the extrusion plate 110 is on the far right of the extrusion box 106. After the extrusion box 106 is filled with slurry, control the servo motor 107 to rotate forward, the servo motor 107 drives the screw rod 108 to rotate, the screw rod 108 cooperates with the screw rod sleeve 114 to drive the extrusion plate 110 to move to the left, and the extrusion plate 110 extrude and transport the slurry in the extrusion box 106. When the plate 110 moves to the left, the extrusion plate 110 generates negative pressure on the right side of the extrusion box 106. The negative pressure draws the slurry on the right side of the tank body 102 into the second guide pipe 118 through the third guide pipe 119, and then discharges the slurry into the right side of the extrusion box 106 through the second guide pipe 118. In the process of conveying the slurry on the left side of the tank body 102, the slurry on the right side of the tank body 102 is sucked, thereby realizing the synchronous circulation of the slurry on the left and right sides of the tank body 102 in a linked manner. Compared with the one-way circulation of the traditional circulation pump, it is more efficient, and can ensure the circulation of the slurry on both sides of the tank body 102, reducing the possibility of slurry leakage. In combination with the rotating stirring rod 105, the multi-directional circulation effect of the slurry in the tank body 102 is ensured, and The first guide pipe 115, the second guide pipe 118 and the third guide pipe 119 are all equipped with a funnel cover 116 to ensure that the slurry can pass through the slurry homogenization plate 117 in a large range, thereby improving the shearing and dispersion effects of the circulating slurry, thereby ensuring the uniformity of the slurry. When the extrusion plate 110 moves to the right and resets, the extrusion plate 110 will generate negative pressure on the left side of the extrusion box 106, thereby assisting the one-way valve pipe 109 to quickly draw the slurry in the tank body 102 into the extrusion box 106. At the same time, when the extrusion plate 110 moves to the right, it will extrude and transport the slurry on the right side of the extrusion box 106, and then shear the slurry again. During the circulation and transportation of the slurry by the three guide pipes 119, the slurry will pass through the slurry homogenizing plate 117. Through the specific channels and gaps evenly distributed on the slurry homogenizing plate 117, the slurry will have a strong extrusion and shearing effect on the slurry, thereby realizing the shearing and dispersion of the slurry. Moreover, the slurry is subjected to one-way circulation shearing on the left side of the extrusion box 106, and the slurry on the right side of the extrusion box 106 will be subjected to two slurry shearing and dispersion treatments. When entering the extrusion box 106, the slurry will first be subjected to the first shearing and dispersion treatment by the slurry homogenizing plate 117 connected to the third guide pipe 119, and will then be subjected to the second shearing and dispersion treatment by the slurry homogenizing plate 117 connected to the second guide pipe 118 during the discharge process.Thus, the reciprocating multiple shearing effect of the slurry on the right side of the tank body 102 is achieved, so that the slurry on the left and right sides of the tank body 102 is circulated and sheared multiple times during the reciprocating movement of the extrusion plate 110, thereby improving the uniform processing efficiency of the slurry inside the tank body 102.

[0039] Example 2, reference Figures 1 to 6 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a pulping device for acrylonitrile catalyst production, which solves the problem that the right side pulp can be sheared and dispersed multiple times, while the left side has a low unidirectional circulation flow rate, which affects the circulation shear effect of the left side pulp, and is inconvenient to perform collision shearing treatment on the pulp passing through the left side. The rotating component includes a fixed rod 202 arranged inside the acceleration shell 201, and a plurality of fan blades 206 are arranged in the middle of the fixed rod 202, and the fan blades 206 are distributed in a ring shape. The upper and lower ends of the acceleration shell 201 are respectively connected to the first guide pipe 115, and a first pulley 203 is fixedly installed on the side of the fixed rod 202 close to the servo motor 107, and a second pulley 204 is fixedly installed on the end of the screw rod 108 away from the second guide pipe 118. The first pulley 203 and the second pulley 204 are connected by a transmission belt 205.

[0040] In this embodiment, the fan blades 206 are fixedly mounted on the outer wall of the fixed rod 202 by welding. During the rotation of the screw rod 108, the second pulley 204 on the screw rod 108 will rotate accordingly. The second pulley 204 drives the first pulley 203 to rotate accordingly through the transmission belt 205, thereby driving the fixed rod 202 to rotate. The fixed rod 202 drives the fan blades 206 to rotate in the circular acceleration shell 201. Due to the driving action of the rotating fan blades 206, the slurry is accelerated from the lower entrance of the acceleration shell 201 to the upper outlet of the acceleration shell 201, thereby forming a higher flow rate, thereby speeding up the slurry passing through the first guide pipe 115, so that the slurry quickly passes through the slurry homogenizing plate 117 connected to the first guide pipe 115, thereby increasing the relative movement speed between the slurry and the homogenizing plate, thereby enhancing the shearing effect on the slurry, thereby ensuring the circulating shearing effect of the slurry on the left side.

[0041] Specifically, the collision assembly includes thin rods 207 arranged on the inner wall of the acceleration shell 201, and the thin rods 207 are evenly distributed. The ends of the thin rods 207 are integrally formed with protrusions 208, and the surfaces of the protrusions 208 are provided with multiple holes, and the holes are irregularly distributed.

[0042] In this embodiment, the thin rod 207 is fixedly mounted on the inner wall of the acceleration shell 201 by welding, and the protrusion 208 on the thin rod 207 is integrally formed. In the process of accelerating the slurry in the acceleration shell 201, the slurry will first be rotated and cut by the fan blades 206, and then the large particles in the slurry will be broken up. At the same time, the slurry will collide and shear with the thin rod 207 and the protrusion 208 on the inner wall of the acceleration shell 201 again. This collision and shearing can destroy the large particles or agglomerates in the slurry and disperse them. Into smaller particles, the slurry is homogenized for the first time in the acceleration shell 201. In addition, the protrusion 208 can also change the flow speed and direction of the slurry, further increasing the turbulence and mixing effect inside it, so that the slurry is homogenized pre-treated in the acceleration shell 201, and then passes through the slurry homogenization plate 117 connected to the first guide pipe 115 again, thereby realizing the double homogenization treatment of the first guide pipe 115 unidirectional circulation, thereby ensuring the homogenization effect of the slurry on both sides of the tank body 102.

[0043] The rest of the structure is the same as that of Example 1.

[0044] During use, during the rotation of the screw rod 108, the second pulley 204 on the screw rod 108 will rotate accordingly, and the second pulley 204 drives the first pulley 203 to rotate accordingly through the transmission belt 205, thereby driving the fixed rod 202 to rotate, and the fixed rod 202 drives the fan blades 206 to rotate in the circular acceleration shell 201. Due to the driving effect of the rotating fan blades 206, the slurry is accelerated from the lower inlet of the acceleration shell 201 to the upper outlet of the acceleration shell 201, thereby forming a higher flow rate, thereby speeding up the slurry passing through the first guide pipe 115, so that the slurry quickly passes through the slurry homogenizing plate 117 connected to the first guide pipe 115, thereby increasing the relative movement speed between the slurry and the homogenizing plate, thereby enhancing the shearing effect on the slurry, thereby ensuring the circulating shearing effect of the slurry on the left side, and During the acceleration process of the slurry in the shell 201, the slurry will first be rotated and cut by the fan blades 206, and then the large particles in the slurry will be broken up. At the same time, the slurry will collide and shear with the thin rods 207 and the protrusions 208 on the inner wall of the acceleration shell 201 again. This collision and shearing can destroy the large particles or agglomerates in the slurry and disperse them into smaller particles, thereby performing the first homogenization treatment on the slurry in the acceleration shell 201. In addition, the protrusions 208 can also change the flow speed and direction of the slurry, further increasing the turbulence and mixing effects inside it, so that the slurry is pre-treated by homogenization in the acceleration shell 201, and then passes through the slurry homogenization plate 117 connected to the first guide pipe 115 again, thereby realizing the double homogenization treatment of the unidirectional circulation of the first guide pipe 115, thereby ensuring the homogenization treatment effect of the slurry on both sides of the tank body 102.

[0045] Example 3, reference Figures 1 to 6 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a pulping process for acrylonitrile catalyst production, which can perform multiple homogenization treatments on the slurry in the tank body 102, thereby ensuring the uniformity of the slurry in the tank body 102, including the pulping device for acrylonitrile catalyst production in the above embodiment, S1. Turn on the servo motor 107, and the screw rod 108 drives the extrusion plate 110 to move to the left. The extrusion plate 110 extrude and transport the slurry on the left side of the extrusion box 106, and shears and disperses the slurry through the slurry homogenizing plate 117 on the first guide pipe 115; S2: The extrusion plate 110 moves to the left, generating negative pressure on the right side of the extrusion box 106. The negative pressure draws the slurry on the right side of the tank 102 into the extrusion box 106 through the second guide pipe 118 and the third guide pipe 119, and shears and disperses the slurry drawn into the extrusion box 106. S3, the screw rod 108 rotates to drive the fixed rod 202 to rotate, so that the acceleration shell 201 accelerates and pre-homogenizes the slurry passing through the first guide pipe 115; S4. The squeezing plate 110 is then moved rightward to reset, and the sheared and dispersed slurry is returned to the tank body 102 for remixing. The slurry is homogenized by reciprocating multiple times, thereby ensuring the uniformity of the slurry in the tank body 102.

[0046] The rest of the structure is the same as that of Example 2.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A pulping device for acrylonitrile catalyst production, characterized in that: include, A homogenizing mechanism (100), comprising a tank body (102), and also comprising a sealing cover (103) arranged above the tank body (102) for feeding, a stirring pulping component for stirring the slurry arranged above the sealing cover (103), and an extrusion box (106) arranged below the tank body (102), an extrusion plate (110) for pushing the slurry, and a driving component for driving the extrusion plate (110) arranged inside the extrusion box (106); A unidirectional homogenizing assembly for unidirectionally circulating slurry is arranged on one side of the extrusion box (106) close to the driving assembly, and further comprises a reciprocating homogenizing assembly for reciprocatingly circulating slurry arranged symmetrically to the unidirectional homogenizing assembly; a first guide pipe (115) for conveying slurry is arranged on one side of the extrusion box (106); an acceleration shell (201) is arranged in the middle of the first guide pipe (115); an acceleration mechanism (200) is arranged in the inner cavity of the acceleration shell (201); The acceleration mechanism (200) comprises a rotating component arranged in the acceleration shell (201) for accelerating and conveying the slurry, and a collision component arranged on the inner wall of the acceleration shell (201) for collision and shearing the slurry.

2. The pulping device for acrylonitrile catalyst production according to claim 1, characterized in that: The stirring pulping assembly comprises a stirring motor (104) arranged in the middle above the sealing cover (103); a stirring rod (105) is installed at the output end of the stirring motor (104), and the stirring rod (105) is arranged in the middle of the inner cavity of the tank body (102); the edge of the sealing cover (103) is detachably connected to the upper edge of the tank body (102) by means of a buckle; a support seat (101) for support is arranged at the lower end of the tank body (102); and the extrusion box (106) is installed above the support seat (101).

3. The pulping device for acrylonitrile catalyst production according to claim 2, characterized in that: The driving assembly comprises a servo motor (107) arranged above the support seat (101); a screw rod (108) is installed at the output end of the servo motor (107); one end of the screw rod (108) is rotatably connected to the inner wall of the extrusion box (106) via a sealed bearing; the inner cavity size of the extrusion box (106) is matched to the size of the extrusion plate (110); rubber pads (111) are arranged on both side edges of the extrusion plate (110), and the rubber pads (111) are in contact with the inner wall of the extrusion box (106); A screw sleeve (114) is fixedly installed in the middle of the extrusion plate (110), the size of the screw (108) matches the size of the screw sleeve (114), and the screw (108) and the screw sleeve (114) are threadedly connected, a slider (113) is provided in the middle of the lower end of the extrusion plate (110), a slide groove (112) is provided at the lower end of the inner cavity of the extrusion box (106), and the slider (113) is slidably connected to the slide groove (112).

4. The pulping device for acrylonitrile catalyst production according to claim 3, characterized in that: The one-way homogenizing component comprises a one-way valve pipeline (109) arranged below the tank body (102) and close to a side of the first guide pipeline (115); the upper end of the one-way valve pipeline (109) is connected to the lower end of the tank body (102); the lower end of the one-way valve pipeline (109) is connected to the upper end of the extrusion box (106); and the side of the extrusion box (106) close to the servo motor (107) is connected to the lower end of the first guide pipeline (115); The reciprocating homogenizing assembly comprises a second guide pipe (118) arranged on the other side of the tank body (102); the lower end of the second guide pipe (118) is connected to the side of the extrusion box (106) away from the servo motor (107); the middle of the second guide pipe (118) is connected to the third guide pipe (119); the ends of the first guide pipe (115), the second guide pipe (118) and the third guide pipe (119) are all connected to the funnel cover (116); the other side of the funnel cover (116) is connected to the tank body (102).

5. The pulping device for acrylonitrile catalyst production according to claim 4, characterized in that: The inner wall of the tank body (102) is provided with a plurality of slurry homogenizing plates (117), the slurry homogenizing plates (117) correspond to the funnel covers (116) one by one, and the funnel covers (116) are connected to the slurry homogenizing plates (117), a second one-way valve (121) is provided at the upper end of the second guide pipe (118), a first one-way valve (120) is provided at the middle of the third guide pipe (119), and the flow directions of the first one-way valve (120) and the second one-way valve (121) are opposite.

6. The pulping device for acrylonitrile catalyst production according to claim 4 or 5, characterized in that: The rotating assembly comprises a fixed rod (202) arranged inside the acceleration housing (201); a plurality of blades (206) are arranged in the middle of the fixed rod (202), and the blades (206) are distributed in a ring shape; the upper and lower ends of the acceleration housing (201) are respectively connected to the first guide pipe (115); a first pulley (203) is fixedly installed on a side of the fixed rod (202) close to the servo motor (107); a second pulley (204) is fixedly installed on an end of the screw rod (108) away from the second guide pipe (118); and the first pulley (203) and the second pulley (204) are connected in transmission via a transmission belt (205).

7. The pulping device for acrylonitrile catalyst production according to claim 6, characterized in that: The collision assembly comprises thin rods (207) arranged on the inner wall of the acceleration shell (201), and the thin rods (207) are equidistantly distributed, and the ends of the thin rods (207) are integrally formed with convex points (208), and the surfaces of the convex points (208) are provided with a plurality of holes, and the holes are irregularly distributed.

8. A pulping process for producing acrylonitrile catalyst, characterized in that: A pulping device for producing acrylonitrile catalyst according to any one of claims 1 to 7, S1, turning on the servo motor (107), the screw rod (108) drives the extrusion plate (110) to move leftward, the extrusion plate (110) extrudes and transports the slurry on the left side of the extrusion box (106), and shears and disperses the slurry through the slurry homogenizing plate (117) on the first guide pipe (115); S2, the extrusion plate (110) moves to the left, generating negative pressure on the right side of the extrusion box (106), and the negative pressure draws the slurry on the right side of the tank body (102) into the extrusion box (106) through the second guide pipe (118) and the third guide pipe (119), thereby shearing and dispersing the slurry drawn into the extrusion box (106); S3, at the same time, the rotation of the screw rod (108) drives the fixed rod (202) to rotate, thereby causing the acceleration shell (201) to accelerate and pre-homogenize the slurry passing through the first guide pipe (115); S4. The squeezing plate (110) is then moved rightward and reset, and the sheared and dispersed slurry is returned to the tank body (102) for remixing. The slurry is homogenized by reciprocating multiple times, thereby ensuring the uniformity of the slurry in the tank body (102).

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