Biobased succinic acid crystallization apparatus

Abstract

The utility model discloses a kind of biological base succinic acid crystallization devices, including kettle body, kettle body bottom is plane structure, the bottom of kettle body inner chamber is equipped with the stainless steel filter plate of liftable, stainless steel filter plate is circular structure, stainless steel filter plate around and kettle inner wall slidingly connected, the middle position of stainless steel filter plate bottom is connected with the piston rod of hydraulic cylinder, there are multiple guide rods around hydraulic cylinder, which are arranged in parallel with it, guide rod is circumferentially distributed, guide rod top end is fixedly connected with the bottom of stainless steel filter plate;Crystal outlet is provided on the outer wall of kettle body, crystal outlet is set along the tangent direction of kettle body outer wall, the section along longitudinal direction of crystal outlet is square structure.The biological base succinic acid crystallization device provided by the utility model integrates crystallization and filtration separation function, can shorten production line length, reduce production cost, and is conducive to energy saving and consumption reduction.

Description

Technical Field

[0001] This utility model relates to a bio-based succinic acid crystallization device, belonging to the field of succinic acid production technology. Background Technology

[0002] Succinic acid, widely found in organisms, is an important dicarboxylic acid and a key metabolite in the microbial tricarboxylic acid cycle and glycolysis pathway. Its synthesis has been achieved through traditional chemical synthesis methods and novel bio-fermentation methods. Bio-fermentation, with its inexpensive raw materials and ability to fix carbon dioxide, has become a hot topic in organic acid research in recent years.

[0003] Currently, the crystallization process of bio-based succinic acid is a key step in its production or purification, aiming to obtain a solid product with the desired purity, crystal form, and particle size distribution. The main crystallization method is cooling crystallization.

[0004] In existing technologies, bio-based succinic acid crystallization systems achieve succinic acid crystallization and solid-liquid separation processes through multiple devices connected in series. The production line is relatively long and complex, with high production costs, which is not conducive to energy conservation and consumption reduction.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] This invention addresses the shortcomings of the prior art by providing a bio-based succinic acid crystallization device that integrates crystallization and filtration separation functions, shortens the production line length, reduces production costs, and facilitates energy conservation and emission reduction.

[0007] To solve the above technical problems, the present invention adopts the following technical solution:

[0008] A bio-based succinic acid crystallization device includes a vessel body with a flat bottom. A liftable stainless steel filter plate with a circular structure is installed at the bottom of the vessel's inner cavity. The filter plate is slidably connected to the inner wall of the vessel. The bottom center of the filter plate is connected to the piston rod of a hydraulic cylinder. Multiple guide rods are arranged parallel to the hydraulic cylinder in a circular pattern, with their tops fixedly connected to the bottom of the filter plate. A crystal outlet is located on the outer wall of the vessel, tangentially along the outer wall, and has a square cross-section along its longitudinal direction.

[0009] Furthermore, a main shaft is installed in the inner cavity of the vessel along the vertical direction, and multiple scrapers distributed in a circular pattern are fixedly installed on the main shaft. The top of the main shaft is connected to a geared motor above the vessel.

[0010] Furthermore, the scraper has a right-angled trapezoidal structure.

[0011] Furthermore, a discharge valve is installed outside the crystal outlet.

[0012] Furthermore, all the guide rods are inserted inside the linear bearing.

[0013] Furthermore, sealing packing is installed between the piston rod of the hydraulic cylinder and the bottom wall of the vessel, and between the guide rod and the bottom wall of the vessel. The bottom of the sealing packing is pressed tightly by a pressure cap with an annular structure.

[0014] Furthermore, the linear bearing is located at the bottom of the pressure cap, and the linear bearing is fixed to the bottom of the vessel body by bolts.

[0015] Furthermore, the cylinder body of the hydraulic cylinder is located at the bottom of the pressure cap, and the cylinder body and the pressure cap are fixed to the bottom of the vessel body by bolts.

[0016] Furthermore, the inner cavity of the vessel is provided with a feed inlet at the top and a filtrate outlet at the bottom.

[0017] Furthermore, a jacket is installed on the outer wall of the vessel.

[0018] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0019] Before crystallization, the stainless steel filter plate is located at the bottom of the inner cavity of the reactor. After crystallization, the stainless steel filter plate rises under the action of the hydraulic cylinder, quickly separating the crystals and leaving them on the stainless steel filter plate. Then, the geared motor drives the scraper to rotate, pushing the crystals out from the crystal outlet.

[0020] This invention integrates crystallization and filtration separation functions, which can shorten the production line length, reduce production costs, and help save energy and reduce consumption.

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the crystal outlet structure;

[0024] Figure 3 This is a schematic diagram of the installation of stainless steel filter plates.

[0025] In the figure, 1-vessel body, 2-main shaft, 3-scraper, 4-gear motor, 5-stainless steel filter plate, 6-crystal outlet, 7-hydraulic cylinder, 8-guide rod, 9-sealing packing, 10-linear bearing, 11-jacket, 12-feed inlet, 13-filtrate outlet, 14-compression cap. Detailed Implementation

[0026] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0027] like Figures 1-3 As shown in the figure, this utility model provides a bio-based succinic acid crystallization device, including a vessel body 1. The bottom of the vessel body 1 has a planar structure. A liftable stainless steel filter plate 5 is installed at the bottom of the inner cavity of the vessel body 1. The stainless steel filter plate 5 has a circular structure and is slidably connected to the inner wall of the vessel body 1.

[0028] A main shaft 2 is installed in the inner cavity of the vessel body 1, which is arranged vertically. Multiple scrapers 3 are fixedly installed on the main shaft 2 in a circular arrangement. The scrapers 3 are right-angled trapezoidal structures. The top of the main shaft 2 is connected to the geared motor 4 above the vessel body 1.

[0029] The bottom end of the scraper 3 can be attached to the upper surface of the stainless steel filter plate 5, and the side end of the scraper 3 away from the main shaft 2 is attached to the inner wall of the vessel body 1.

[0030] A crystal outlet 6 is provided on the outer wall of the vessel body 1. The crystal outlet 6 is arranged along the tangent direction of the outer wall of the vessel body 1. The cross-section of the crystal outlet 6 along the longitudinal direction is a square structure. A discharge valve is installed on the outside of the crystal outlet 6.

[0031] During rotation, scraper 3 can peel off the crystal layer on the surface of stainless steel filter plate 5, allowing the crystals to be discharged from crystal outlet 6.

[0032] The bottom center of the stainless steel filter plate 5 is connected to the piston rod of the hydraulic cylinder 7. There are multiple guide rods 8 arranged parallel to the hydraulic cylinder 7. The guide rods 8 are distributed in a circle, and the top of the guide rods 8 are fixedly connected to the bottom of the stainless steel filter plate 5.

[0033] The guide rods 8 are all inserted inside the linear bearings 10.

[0034] Sealing packing 9 is installed between the piston rod of the hydraulic cylinder 7 and the bottom wall of the vessel body 1, and between the guide rod 8 and the bottom wall of the vessel body 1. The bottom of the sealing packing 9 is pressed by the pressure cap 14 of the annular structure.

[0035] The linear bearing 10 is located at the bottom of the pressure cover 14, and the linear bearing 10 and the pressure cover 14 are fixed to the bottom of the vessel body 1 by bolts.

[0036] The cylinder body of the hydraulic cylinder 7 is located at the bottom of the pressure cover 14, and the cylinder body and the pressure cover 14 are fixed to the bottom of the vessel body 1 by bolts.

[0037] The hydraulic cylinder 7 provides power for the lifting and lowering of the stainless steel filter plate 5, and the guide rod 8 cooperates with the linear bearing 10 to ensure the smooth lifting and lowering process of the stainless steel filter plate 5.

[0038] The inner cavity of the vessel body 1 is provided with a feed inlet 12 at the top and a filtrate outlet 13 at the bottom.

[0039] A jacket 11 is installed on the outer wall of the vessel body 1. The jacket 11 is used for the flow of heat exchange medium or cold heat exchange medium, and plays a role in temperature control.

[0040] The specific working principle of this utility model is as follows:

[0041] Before crystallization, the stainless steel filter plate 5 is located at the bottom of the inner cavity of the vessel body 1. During crystallization, a heat exchange medium is first introduced into the jacket 11 to heat the succinic acid solution in the inner cavity of the vessel body 1 to a higher temperature so that it is completely dissolved. Then, a cold heat exchange medium is introduced into the jacket 11 to cool the solution inside the vessel body 1. When the crystallization temperature is reached, crystals will gradually precipitate. After crystallization, the stainless steel filter plate 5 is raised under the action of the hydraulic cylinder 7 so that the upper surface of the stainless steel filter plate 5 is at the same height as the crystal outlet 6. The raised stainless steel filter plate 5 will quickly separate the crystals. After separation, the liquid is output from the filtrate outlet 13, and the separated crystals remain on the stainless steel filter plate 5. Then, the reduction motor 4 drives the scraper 3 to rotate and push the crystals out from the crystal outlet 6.

[0042] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A bio-based succinic acid crystallization apparatus, characterized in that: The vessel includes a vessel body (1), the bottom of which is a planar structure. A liftable stainless steel filter plate (5) is installed at the bottom of the inner cavity of the vessel body (1). The stainless steel filter plate (5) is circular. The stainless steel filter plate (5) is slidably connected to the inner wall of the vessel body (1). The bottom middle position of the stainless steel filter plate (5) is connected to the piston rod of the hydraulic cylinder (7). There are multiple guide rods (8) arranged parallel to the hydraulic cylinder (7). The guide rods (8) are distributed in a circle. The top of the guide rods (8) is fixedly connected to the bottom of the stainless steel filter plate (5). A crystal outlet (6) is provided on the outer wall of the vessel body (1). The crystal outlet (6) is arranged along the tangent direction of the outer wall of the vessel body (1). The cross section of the crystal outlet (6) along the longitudinal direction is a square structure.

2. The bio-based succinic acid crystallization apparatus as described in claim 1, characterized in that: A main shaft (2) is installed in the inner cavity of the vessel body (1) along the vertical direction. Multiple scrapers (3) are fixedly installed on the main shaft (2) in a circular distribution. The top of the main shaft (2) is connected to the geared motor (4) above the vessel body (1).

3. The bio-based succinic acid crystallization apparatus as described in claim 2, characterized in that: The scraper (3) has a right-angled trapezoidal structure.

4. The bio-based succinic acid crystallization apparatus as described in claim 1, characterized in that: A discharge valve is installed outside the crystal outlet (6).

5. The bio-based succinic acid crystallization apparatus as described in claim 1, characterized in that: The guide rods (8) are all inserted inside the linear bearings (10).

6. The bio-based succinic acid crystallization apparatus as described in claim 5, characterized in that: Sealing packing (9) is installed between the piston rod of the hydraulic cylinder (7) and the bottom wall of the vessel body (1), and between the guide rod (8) and the bottom wall of the vessel body (1). The bottom of the sealing packing (9) is pressed by the pressure cap (14) of the annular structure.

7. The bio-based succinic acid crystallization apparatus as described in claim 6, characterized in that: The linear bearing (10) is located at the bottom of the pressure cap (14), and the linear bearing (10) and the pressure cap (14) are fixed to the bottom of the vessel body (1) by bolts.

8. The bio-based succinic acid crystallization apparatus as described in claim 7, characterized in that: The cylinder body of the hydraulic cylinder (7) is located at the bottom of the pressure cover (14), and the cylinder body and the pressure cover (14) are fixed to the bottom of the vessel body (1) by bolts.

9. The bio-based succinic acid crystallization apparatus as described in claim 1, characterized in that: The inner cavity of the vessel body (1) is provided with a feed inlet (12) at the top and a filtrate outlet (13) at the bottom.

10. The bio-based succinic acid crystallization apparatus as described in claim 1, characterized in that: A jacket (11) is installed on the outer wall of the vessel body (1).

Images