Pseudo-boehmite synthesis aging apparatus

Abstract

The utility model discloses pseudo-boehmite synthetic aging equipment relates to pseudo-boehmite preparation technical field, including by aging tank, feed port, discharge port constitutes the equipment main part, feed port, discharge port sets up respectively in the upper and lower end of aging tank and with aging tank inner cavity lead through, feed port, discharge port deviates the central position of aging tank, the inboard of aging tank is provided with stirring heating assembly, and stirring heating assembly is used for providing the stirring and uniform heating operation for aging tank internal aging liquid. The utility model discloses through setting up stirring heating assembly, through the heat exchange channel that spiral stirring piece, vertical stirring rod, arc stirring piece, bottom connecting arm constitute, compared with the structure that the heat exchange part of traditional aging tank sets up in the sandwich of aging tank, its spiral stirring piece, vertical stirring rod, arc stirring piece, bottom connecting arm rotation area covers the middle part and the outside area in the inside of aging tank, and its heating effect is more uniform, efficient.

Description

Technical Field

[0001] This utility model relates to the field of boehmite preparation technology, specifically to boehmite synthesis and aging equipment. Background Technology

[0002] Boehmite, also known as monohydrate alumina or pseudo-monohydrate diatomite, is a non-toxic, tasteless, odorless, white colloidal (wet) or powder (dry) substance with high crystal purity, good colloidal properties, and strong adhesion. It has a high specific surface area and large pore volume. In its hydrated state, it is a thixotropic gel and can be used as a binder for semi-synthetic rare earth Y-type molecular sieve cracking catalysts, a binder for aluminosilicate refractory fibers, a catalyst for alcohol dehydration to ethylene production, and a catalyst for ethylene oxide production. It can also be used as a raw material for the production of catalyst supports, activated alumina, and other aluminum salts.

[0003] The preparation process of boehmite includes steps such as neutralization reaction, slurry aging, washing and drying. In existing aging reaction tanks, a heating element is installed on the aging reaction tank to heat the aging liquid in the aging chamber to improve aging efficiency. However, the heating element on the existing aging reaction tank is concentrated in the tank jacket, so the heating effect of the aging liquid near the middle of the aging chamber is weak and the overall heating effect is uneven. Based on this, in order to achieve a uniform heating effect, a boehmite synthesis and aging device is provided. Utility Model Content

[0004] The purpose of this utility model is to provide a pseudo-boehmite synthesis and aging device in order to solve the problems mentioned above.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pseudo-boehmite synthesis aging device, comprising an aging tank, an inlet, and an outlet, wherein the inlet and outlet are respectively located at the upper and lower ends of the aging tank and communicate with the inner cavity of the aging tank, the inlet and outlet are offset from the center of the aging tank, and a stirring and heating component is provided on the inner side of the aging tank, the stirring and heating component being used to provide stirring and uniform heating for the aging liquid inside the aging tank;

[0006] The stirring and heating assembly includes a drive motor, a central rotating shaft, a connecting seat, a top connecting arm, an annular seat, a spiral stirring blade, a vertical stirring rod, an arc-shaped stirring blade, a bottom connecting arm, a conical connecting cover, and a liquid outlet.

[0007] The drive motor is fixed at the center of the top of the aging tank. The central rotating shaft is fixed at the bottom of the output end of the drive motor and extends into the interior of the aging tank. The conical connecting cover is fixed at the bottom of the central rotating shaft and fits against the bottom of the inner wall of the aging tank. The liquid outlet is fixed at the bottom of the conical connecting cover and extends into the bottom of the aging tank.

[0008] The connecting seat is fixed to the outside of the central rotating shaft near the top. There are three top connecting arms, which are arranged in a ring and fixed to the outside of the connecting seat. The ring seat is fixed to the outside of the three top connecting arms.

[0009] The top ends of the spiral stirring blade, the vertical stirring rod, and the arc-shaped stirring blade are respectively connected and fixed to three top connecting arms. The three bottom connecting arms are respectively fixed to the bottom ends of the spiral stirring blade, the vertical stirring rod, and the arc-shaped stirring blade, and the three bottom connecting arms are fixedly connected to the conical connecting cover.

[0010] The spiral stirring blades, vertical stirring rods, and arc-shaped stirring blades are driven by a drive motor to rotate in a circular motion to agitate the aging liquid inside the aging tank.

[0011] As a further improvement of this utility model: a limiting annular groove is formed on the inner wall of the aging tank, and the annular seat is rotatably connected to the inner side of the limiting annular groove;

[0012] The top connecting arm, annular seat, spiral stirring blade, vertical stirring rod, arc-shaped stirring blade, bottom connecting arm, and conical connecting cover all have hollow cavity structures, and the inner cavities are sequentially connected. The outer side of the top connecting arm has an open structure. The outer side of the aging tank is fixed with a liquid inlet that communicates with the inner cavity of the top connecting arm. The liquid outlet is connected to the inner cavity of the conical connecting cover.

[0013] As a further embodiment of this utility model: multiple vertical stirring rods are evenly arranged in the horizontal direction, and the side of the outermost vertical stirring rod is arc-shaped and fits against the inner wall of the aging tank, and the bottom of the bottom connecting arm connected to the vertical stirring rod is fitted against the bottom of the inner wall of the aging tank.

[0014] As a further improvement of this utility model: the outer trajectory diameter of the arc-shaped stirring blade is smaller than the inner wall diameter of the aging tank, and the spiral direction of the arc-shaped stirring blade is opposite to that of the spiral stirring blade.

[0015] As a further embodiment of this utility model: the inner side of the spiral stirring blade is welded and fixed to the central rotating shaft, and a fixing ring seat is fixed to the outer side of the three bottom connecting arms. The outer wall of the fixing ring seat is in contact with the inner wall of the aging tank, and the bottom of the central rotating shaft is in contact with the bottom of the inner wall of the aging tank.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] By setting up a stirring and heating component, which consists of a heat exchange channel composed of a spiral stirring blade, a vertical stirring rod, an arc-shaped stirring blade, and a bottom connecting arm, compared to the traditional aging tank structure where the heat exchange part is located in the jacket of the aging tank, the rotating area of ​​the spiral stirring blade, vertical stirring rod, arc-shaped stirring blade, and bottom connecting arm covers the middle and outer areas of the aging tank, resulting in a more uniform and efficient heating effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the aging tank of this utility model;

[0020] Figure 3 This is a cross-sectional exploded view of the aging tank of this utility model;

[0021] Figure 4 This is a cross-sectional view of some parts of the stirring and heating assembly of this utility model.

[0022] In the diagram: 1. Main body of the equipment; 101. Aging tank; 102. Feed inlet; 103. Discharge outlet; 104. Limiting ring groove; 105. Liquid inlet; 2. Stirring and heating assembly; 201. Drive motor; 202. Central rotating shaft; 203. Connecting seat; 204. Top connecting arm; 205. Annular seat; 206. Spiral stirring blade; 207. Vertical stirring rod; 208. Arc-shaped stirring blade; 209. Bottom connecting arm; 210. Conical connecting cover; 211. Liquid outlet; 212. Fixing ring seat. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 In this embodiment of the utility model, the pseudo-boehmite synthesis aging equipment includes a main body 1 consisting of an aging tank 101, an inlet 102, and an outlet 103. The inlet 102 and the outlet 103 are respectively located at the upper and lower ends of the aging tank 101 and communicate with the inner cavity of the aging tank 101. The inlet 102 and the outlet 103 are offset from the center of the aging tank 101. A stirring and heating component 2 is provided on the inner side of the aging tank 101. The stirring and heating component 2 is used to provide stirring and uniform heating for the aging liquid inside the aging tank 101.

[0025] The stirring and heating assembly 2 includes a drive motor 201, a central rotating shaft 202, a connecting seat 203, a top connecting arm 204, an annular seat 205, a spiral stirring blade 206, a vertical stirring rod 207, an arc-shaped stirring blade 208, a bottom connecting arm 209, a conical connecting cover 210, and a liquid outlet 211.

[0026] The drive motor 201 is installed and fixed at the top center of the aging tank 101. The central rotating shaft 202 is fixed at the bottom of the output end of the drive motor 201 and extends into the interior of the aging tank 101. The conical connecting cover 210 is fixed at the bottom of the central rotating shaft 202 and fits against the bottom of the inner wall of the aging tank 101. The liquid outlet 211 is fixed at the bottom of the conical connecting cover 210 and extends into the bottom of the aging tank 101.

[0027] The connecting seat 203 is fixed to the outside of the central rotating shaft 202 near the top. Three top connecting arms 204 are provided. The three top connecting arms 204 are arranged in a ring and fixed to the outside of the connecting seat 203. The ring seat 205 is fixed to the outside of the three top connecting arms 204.

[0028] The top ends of the spiral stirring blade 206, the vertical stirring rod 207, and the arc-shaped stirring blade 208 are respectively connected and fixed to three top connecting arms 204, and three bottom connecting arms 209 are respectively fixed to the bottom ends of the spiral stirring blade 206, the vertical stirring rod 207, and the arc-shaped stirring blade 208, and the three bottom connecting arms 209 are fixedly connected to the conical connecting cover 210.

[0029] The drive motor 201 drives the spiral stirring blade 206, the vertical stirring rod 207, and the arc-shaped stirring blade 208 to rotate in a circular motion to agitate the aging liquid inside the aging tank 101.

[0030] A limiting annular groove 104 is provided on the inner wall of the aging tank 101, and the annular seat 205 is rotatably connected to the inner side of the limiting annular groove 104.

[0031] The top connecting arm 204, the annular seat 205, the spiral stirring blade 206, the vertical stirring rod 207, the arc-shaped stirring blade 208, the bottom connecting arm 209, and the conical connecting cover 210 all have a hollow structure inside, and the inner cavities are connected in sequence. The outer side of the top connecting arm 204 has an open structure. The outer side of the aging tank 101 is fixed with an inlet 105 that is connected to the inner cavity of the top connecting arm 204. The outlet 211 is connected to the inner cavity of the conical connecting cover 210.

[0032] In this embodiment: the pseudo-boehmite raw material liquid (i.e. aging liquid) after neutralization reaction is transported to the inlet 102 through the pipeline and enters the aging tank 101 (it should be noted that the liquid level of the aging liquid inside the aging tank 101 is lower than the height of the connecting seat 203, the horizontal height of the connecting seat 203 is lower than the horizontal height of the annular seat 205, and the top connecting arm 204 is tilted, so that the aging liquid will not come into contact with the rotating area of ​​the annular seat 205 during stirring). After aging is completed, the unloading operation can be performed by opening the valve at the outlet 103.

[0033] While feeding, the drive motor 201 is started, which drives the central rotating shaft 202 to rotate. The central rotating shaft 202 synchronously drives the top connecting arm 204, the annular seat 205, the spiral stirring blade 206, the vertical stirring rod 207, the arc-shaped stirring blade 208, the bottom connecting arm 209, the conical connecting cover 210, and the liquid outlet 211 to rotate synchronously. The rotation of the spiral stirring blade 206, the vertical stirring rod 207, the arc-shaped stirring blade 208, and the bottom connecting arm 209 can achieve full agitation of the aging liquid.

[0034] Meanwhile, the heat exchange medium (e.g., hot water or hot air) is transported through an external pipe to the inlet 105 and then to the inner cavity of the annular seat 205. Afterward, it flows through the inner cavities of the three top connecting arms 209 into the inner cavities of the spiral stirring blade 206, the vertical stirring rod 207, and the arc-shaped stirring blade 208, respectively, and then into the inner cavities of the three bottom connecting arms 209. Finally, it converges inside the conical connecting cover 210 and is discharged through the outlet 211. (It should be noted that the bottom of the outlet 211 is connected to...) (The return pipe of the heat exchange medium is connected). The heat exchange medium flowing inside the spiral stirring plate 206, vertical stirring rod 207, arc stirring plate 208, and bottom connecting arm 209 can fully exchange heat with the aging liquid. Compared with the structure of the traditional aging tank where the heat exchange part is set in the jacket of the aging tank, the rotating area of ​​the spiral stirring plate 206, vertical stirring rod 207, arc stirring plate 208, and bottom connecting arm 209 covers the middle and outer areas of the aging tank 101, and its heating effect is more uniform and efficient.

[0035] Please refer to this carefully. Figures 2-4 Multiple vertical stirring rods 207 are evenly arranged in the horizontal direction, and the side of the outermost vertical stirring rod 207 is arc-shaped and fits against the inner wall of the aging tank 101. The bottom of the bottom connecting arm 209 connected to the vertical stirring rod 207 fits against the bottom of the inner wall of the aging tank 101.

[0036] The outer diameter of the arc-shaped stirring blade 208 is smaller than the inner diameter of the aging tank 101, and the spiral direction of the arc-shaped stirring blade 208 is opposite to that of the spiral stirring blade 206.

[0037] In this embodiment: the mixing effect and heating area can be further expanded by setting multiple vertical stirring rods 207. In addition, when the outermost vertical stirring rod 207 rotates, it can form a wall scraping effect on the inner wall of the aging tank 101. When the bottom connecting arm 209 connected to the vertical stirring rod 207 rotates, it can form a wall scraping operation on the bottom of the inner wall of the aging tank 101.

[0038] The arc-shaped stirring plate 208 only serves a stirring effect, and the spiral stirring plate 206 and the arc-shaped stirring plate 208 stir the aging liquid in opposite directions. For example, when the spiral stirring plate 206 rotates counterclockwise, it can push the aging liquid upward. At this time, the arc-shaped stirring plate 208 can push the aging liquid downward, thus achieving the effect of mixing the aging liquid up and down.

[0039] Please refer to this carefully. Figures 2-4 The inner side of the spiral stirring blade 206 is welded and fixed to the central rotating shaft 202. The outer side of the three bottom connecting arms 209 is fixed with a fixing ring seat 212. The outer wall of the fixing ring seat 212 is in contact with the inner wall of the aging tank 101, and the bottom of the central rotating shaft 202 is in contact with the bottom of the inner wall of the aging tank 101.

[0040] In this embodiment, this structure strengthens and reinforces the overall structure of the spiral stirring blade 206, the vertical stirring rod 207, and the arc-shaped stirring blade 208, ensuring normal operation.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pseudo-boehmite synthesis aging device, comprising a main body (1) consisting of an aging tank (101), a feed inlet (102), and a discharge outlet (103), wherein the feed inlet (102) and the discharge outlet (103) are respectively located at the upper and lower ends of the aging tank (101) and communicate with the inner cavity of the aging tank (101), and the feed inlet (102) and the discharge outlet (103) are offset from the center of the aging tank (101), characterized in that, The aging tank (101) is provided with a stirring and heating assembly (2) on its inner side. The stirring and heating assembly (2) is used to provide stirring and uniform heating for the aging liquid inside the aging tank (101). The stirring and heating assembly (2) includes a drive motor (201), a central rotating shaft (202), a connecting seat (203), a top connecting arm (204), an annular seat (205), a spiral stirring blade (206), a vertical stirring rod (207), an arc-shaped stirring blade (208), a bottom connecting arm (209), a conical connecting cover (210), and a liquid outlet (211). The drive motor (201) is installed and fixed at the top center of the aging tank (101). The central rotating shaft (202) is fixed at the bottom of the output end of the drive motor (201) and extends into the interior of the aging tank (101). The conical connecting cover (210) is fixed at the bottom of the central rotating shaft (202) and fits against the bottom of the inner wall of the aging tank (101). The liquid outlet (211) is fixed at the bottom of the conical connecting cover (210) and extends into the bottom of the aging tank (101). The connecting seat (203) is fixed on the outside of the central rotating shaft (202) near the top. There are three top connecting arms (204). The three top connecting arms (204) are arranged in a ring and fixed on the outside of the connecting seat (203). The ring seat (205) is fixed on the outside of the three top connecting arms (204). The top ends of the spiral stirring blade (206), the vertical stirring rod (207), and the arc-shaped stirring blade (208) are respectively connected and fixed to three top connecting arms (204), and the three bottom connecting arms (209) are respectively fixed to the bottom ends of the spiral stirring blade (206), the vertical stirring rod (207), and the arc-shaped stirring blade (208), and the three bottom connecting arms (209) are fixedly connected to the conical connecting cover (210); The spiral stirring blade (206), vertical stirring rod (207), and arc-shaped stirring blade (208) are driven by the drive motor (201) to run in a circular motion to agitate the aging liquid inside the aging tank (101).

2. The pseudoboehmite synthesis and aging equipment according to claim 1, characterized in that, The aging tank (101) has a limiting annular groove (104) on its inner wall, and the annular seat (205) is rotatably connected to the inner side of the limiting annular groove (104); The top connecting arm (204), the annular seat (205), the spiral stirring blade (206), the vertical stirring rod (207), the arc-shaped stirring blade (208), the bottom connecting arm (209), and the conical connecting cover (210) all have a hollow structure inside, and the inner cavities are connected in sequence. The outer side of the top connecting arm (204) has an open structure. The outer side of the aging tank (101) is fixed with an inlet (105) that is connected to the inner cavity of the top connecting arm (204). The outlet (211) is connected to the inner cavity of the conical connecting cover (210).

3. The pseudoboehmite synthesis and aging equipment according to claim 1, characterized in that, The vertical stirring rods (207) are evenly arranged in a horizontal direction, and the side of the outermost vertical stirring rod (207) is arc-shaped and fits against the inner wall of the aging tank (101). The bottom connecting arm (209) connected to the vertical stirring rod (207) fits against the bottom of the inner wall of the aging tank (101).

4. The pseudoboehmite synthesis and aging equipment according to claim 1, characterized in that, The outer diameter of the arc-shaped stirring blade (208) is smaller than the inner diameter of the aging tank (101), and the spiral direction of the arc-shaped stirring blade (208) is opposite to that of the spiral stirring blade (206).

5. The pseudoboehmite synthesis and aging equipment according to claim 1, characterized in that, The inner side of the spiral stirring blade (206) is welded and fixed to the central rotating shaft (202). The outer sides of the three bottom connecting arms (209) are fixed with fixing ring seats (212). The outer wall of the fixing ring seats (212) is in contact with the inner wall of the aging tank (101). The bottom of the central rotating shaft (202) is in contact with the bottom of the inner wall of the aging tank (101).

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