A device for recovering ethanol from heparin sodium production wastewater

Abstract

The utility model relates to the technical field of ethanol recovery equipment, provide a kind of ethanol recovery device in heparin sodium production wastewater, including ethanol distillation tank and the outlet pipe of upper end and the inlet pipe of lower end;Impurity processing unit, including longitudinally parallel installation's guide pipe and separation pipe, located ethanol distillation tank's bottom side, and the lower end of separation pipe is connected to inlet pipe;The upper end inside of guide pipe is equipped with the filter screen of inclination, the lower edge of filter screen is the side close to separation pipe;The inside rotation of separation pipe is equipped with helical blade, the helical blade is the taper structure of little up big down, the inside of separation pipe is fixed with net rack and screen, respectively located the upper and lower ends of helical blade. After being intercepted by filter screen in guide pipe, the inside of separation pipe is sent by through slot, and then the impurities are squeezed to make water flow to bottom, finally backflow to guide pipe, both can avoid impurities to block equipment, and can prevent waste caused by part of ethanol discharged by impurities.

Description

Technical Field

[0001] This utility model relates to the technical field of ethanol recovery equipment, and more specifically, to an ethanol recovery device for heparin sodium production wastewater. Background Technology

[0002] Heparin sodium is an important raw material drug extracted from the mucosa of the small intestine of pigs. In the production process of heparin sodium, especially in the precipitation and purification steps, a large amount of ethanol (usually 95% concentration) is used as a solvent. This generates a large amount of wastewater containing water, inorganic salts (such as sodium chloride), protein fragments, other organic impurities, and low concentrations of ethanol. If the ethanol-containing wastewater is discharged directly, its chemical oxygen demand (COD) and biochemical oxygen demand (BOD) values ​​are extremely high, which puts a huge pressure on the wastewater treatment system. Therefore, ethanol is often recovered during wastewater treatment to fundamentally reduce the pollution load of wastewater.

[0003] Currently, in the treatment of wastewater from heparin sodium production, the wastewater contains a large amount of mucus, tissue and other debris, which can easily clog equipment and is difficult to clean, greatly affecting the normal recovery of ethanol.

[0004] To address the aforementioned issues, this application proposes an ethanol recovery device from wastewater generated during heparin sodium production. Utility Model Content

[0005] The purpose of this invention is to provide an ethanol recovery device from wastewater in heparin sodium production, which solves the problem that impurities in wastewater affect ethanol recovery operations in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] An ethanol recovery device for heparin sodium production wastewater includes an ethanol distillation tank with an outlet pipe at its upper end and an inlet pipe at its lower end.

[0008] The impurity treatment unit includes a guide tube and a separation tube installed in parallel in the middle, located on one side of the bottom of the ethanol distillation tank, and the lower end of the separation tube is connected to the inlet tube.

[0009] The upper end of the guide tube is provided with an inclined filter screen, and the lower edge of the filter screen is close to the separation tube.

[0010] The separation tube is equipped with a spiral blade that rotates inside. The spiral blade has a conical structure that is smaller at the top and larger at the bottom. The separation tube is also equipped with a mesh frame and a partition mesh, which are located at the top and bottom ends of the spiral blade, respectively.

[0011] A through groove and a return groove are provided between the guide tube and the separation tube, located near the upper end and the bottom of the separation tube, respectively.

[0012] Preferably, the separation tube includes three chambers: upper, middle, and lower, wherein the upper chamber and the lower chamber are located above and below the spiral blade, respectively, and the spiral blade is located in the middle chamber.

[0013] Preferably, a rotating shaft is rotatably mounted inside the separation tube, the spiral blade is fixedly mounted on the outside of the rotating shaft, and a shaft seat rotatably connected to the top of the spiral blade is fixedly provided at the top of the separation tube.

[0014] Preferably, a discharge port is fixed on one side of the upper end of the separation tube, and the internal opening is connected to the upper chamber.

[0015] Preferably, the spiral blades and the mesh frame are combined to form an impurity pressing mechanism, which is used to promote the downward flow of wastewater.

[0016] Preferably, both the through channel and the return channel are fixedly equipped with screens.

[0017] Preferably, the bottom of the lower section of the separator is provided with a guide slope, and the lower edge is connected to the return groove.

[0018] The beneficial effects of this utility model are:

[0019] 1. By setting up a filter screen inside the guide tube to intercept impurities, and then guiding them to the inside of the separation tube for storage, the water is allowed to flow back into the guide tube after secondary filtration for subsequent ethanol recovery. This arrangement effectively prevents impurities from entering the ethanol distillation tank and causing blockages and increased load.

[0020] 2. Through the spiral ascent of the spiral blades and the obstruction of the mesh frame, the impurities entering the separation tube are continuously squeezed upwards, causing the water and ethanol carried by the impurities to flow back downwards, thus achieving the effect of separating the impurities from the water and avoiding the waste caused by the impurities carrying ethanol being sent out. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0023] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the impurity treatment unit of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal planar structure of the impurity treatment unit of this utility model.

[0025] Figure 4 This is a schematic diagram of the internal assembly structure of the upper end of the separation tube and the guide tube of this utility model;

[0026] The attached diagram lists the components represented by each number as follows:

[0027] In the diagram: 1. Ethanol distillation tank; 11. Inlet pipe; 12. Outlet pipe; 21. Guide pipe; 211. Filter screen; 22. Separation pipe; 221. Rotating shaft; 2211. Spiral blade; 222. Partition screen; 223. Frame; 224. Waste discharge port; 225. Guide slope; 226. Shaft seat; 201. Through groove; 202. Reflux groove; 203. Screen. Detailed Implementation

[0028] 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.

[0029] In the description of this utility model, it should be understood that the terms "opening", "top and bottom", "thickness", "top", "middle", "length", "inner" and "around" indicate the orientation or positional relationship only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] An ethanol recovery device for heparin sodium production wastewater is designed to reduce the impurity content in the wastewater and promote ethanol recovery. Through the longitudinal parallel arrangement of the guide pipe 21 and the separation pipe 22, impurities are intercepted by the filter screen 211 and sent into the interior of the separation pipe 22 through the through channel 201. Then, the water is squeezed down to the bottom and finally returned to the guide pipe 21 through the return channel 202. This achieves the effects of impurity filtration and impurity-carrying water return, which can not only avoid impurities clogging the equipment, but also prevent waste caused by impurities carrying some ethanol out.

[0031] In some embodiments, the specific structure of the ethanol recovery device in heparin sodium production wastewater is as follows: Figure 1-4 As shown, it includes an ethanol distillation tank 1 and its upper and lower ends outlet pipe 12 and inlet pipe 11, and also includes an impurity treatment unit.

[0032] The impurity treatment unit includes a guide tube 21 and a separation tube 22;

[0033] The guide pipe 21 is the main pipeline for transporting wastewater. It is installed longitudinally and connected to the inlet pipe 11 via an adapter at the bottom.

[0034] Separator 22 is a secondary pipe, which is installed longitudinally in parallel on one side of guide pipe 21;

[0035] The guide tube 21 has a filter screen 211 fixedly installed inside the upper end. It is an inclined mesh structure, with the edge closer to the separation tube 22 located at the bottom and the edge farther away from the separation tube 22 located at the top.

[0036] Furthermore, a through groove 201 and a return groove 202 are provided between the guide tube 21 and the separation tube 22, located at the upper and lower ends respectively;

[0037] It should be noted that the through groove 201 is located above the lower edge of the filter screen 211, and the return groove 202 is located at the bottom of the separation tube 22;

[0038] It is understandable that after the filter screen 211 intercepts impurities, it is sent into the interior of the separation tube 22 through the through channel 201. The water in the separation tube 22 is returned to the interior of the guide tube 21 through the return channel 202 for subsequent ethanol recovery treatment.

[0039] Furthermore, the inside of the separation tube 22 is rotatably mounted with a rotating shaft 221 and a spiral blade 2211 on its outer side, and the spiral blade 2211 is a conical structure with a small diameter end at the top and a large diameter end at the bottom.

[0040] In addition, a mesh frame 223 and a partition mesh 222 are fixedly installed inside the separation tube 22, located at the upper and lower ends of the spiral blade 2211 respectively;

[0041] It should be noted that the mesh frame 223 and the partition mesh 222 divide the internal space of the separation tube 22 into three chambers: upper, middle and lower. The middle chamber is the main chamber for the spiral blade 2211 to press impurities, the upper chamber is the impurity temporary storage chamber, and the lower chamber is the water return chamber. The return groove 202 is located on one side wall of the lower chamber.

[0042] It is understandable that when impurities enter the separation tube 22, under the rotational upward action of the spiral blade 2211, combined with the blocking effect of the mesh frame 223, the impurities accumulate at the top of the middle section chamber, thereby creating a squeezing effect on the impurities, causing the carried water liquid to flow downward until it passes through the partition mesh 222 and enters the lower section chamber, and then flows back to the interior of the guide tube 21 through the return groove 202.

[0043] In addition, the bottom of the lower chamber has an inclined surface structure, which is a guide slope 225. The side edge away from the guide tube 21 is located on the top, and the side edge closer to the guide tube 21 is located on the bottom, which is connected to the return groove 202.

[0044] like Figure 2-4As shown, a discharge port 224 is fixedly installed on one side of the upper end of the separation tube 22. The internal opening is located above the mesh frame 223 and serves as the discharge channel for impurities.

[0045] It should be noted that the mesh frame 223 adopts a mesh structure with relatively large mesh openings. The specific mesh size is determined according to the actual operation requirements. It can block impurities and promote the pressing operation, while under a certain thrust, it allows some of the pressed impurities to pass through the mesh frame 223 and enter the upper chamber for discharge.

[0046] like Figure 2-4 As shown, a rotary motor is fixedly installed at the bottom of the separation tube 22, and its output shaft is a rotating shaft 221. A bearing seat 226 is fixedly installed above the separation tube 22 for rotating the upper part of the rotating shaft 221 to ensure the rotational stability of the rotating shaft 221.

[0047] like Figure 2-4 As shown, both the through channel 201 and the return channel 202 are equipped with screens 203, which are large-mesh structures. The specific mesh size is determined according to the actual operation requirements. The screens 203 inside the through channel 201 are used to slow down the speed at which impurities enter the separation tube 22, thereby creating a slight blocking effect on the inlet of the through channel 201 to prevent excessive wastewater from entering the interior of the separation tube 22 and affecting the pressing operation.

[0048] The specific operating methods of ethanol recovery devices in heparin sodium production wastewater, as disclosed in some publications, are as follows:

[0049] S1. Wastewater enters the guide pipe 21 through the water supply pipe. When it flows vertically downward, it passes through the filter screen 211 to connect with impurities. Utilizing the inclined structure of the filter screen 211, under the flushing of subsequent wastewater, the impurities pass through the channel 201 and enter the interior of the separation pipe 22.

[0050] S2. Impurities entering the separation tube 22 are received by the spiral blades 2211 and spirally conveyed upwards. The mesh frame 223 blocks the impurities from passing directly through. Then, under the subsequent spiral conveying action, the impurities accumulate in the top area, thereby pressing the accumulated impurities and causing the wastewater carried by the impurities to flow downwards.

[0051] S3. The downstream wastewater passes through the mesh 222 and enters the bottom area of ​​the separation pipe 22. Then, guided by the guide slope 225, it flows to the return tank 202 and finally flows back into the through tank 201 to continue the subsequent ethanol recovery operation.

[0052] S4. The impurities at the top that have been squeezed out are pushed through the mesh frame 223 and enter the top area of ​​the separation tube 22 under the subsequent thrust, and are finally discharged outward from the impurity discharge port 224.

[0053] S5. Wastewater is heated inside the ethanol distillation tank 1. Utilizing the low boiling point of ethanol, the ethanol is heated to form vapor, which is then discharged and collected from the outlet pipe 12.

[0054] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An ethanol recovery device for heparin sodium production wastewater, characterized in that: It includes an ethanol distillation tank (1) and its upper outlet pipe (12) and lower inlet pipe (11). The impurity treatment unit includes a guide tube (21) and a separation tube (22) installed in parallel in the longitudinal direction, located on one side of the bottom of the ethanol distillation tank (1), and the lower end of the separation tube (22) is connected to the inlet tube (11). The upper end of the guide tube (21) is provided with an inclined filter screen (211), and the lower edge of the filter screen (211) is close to the side of the separation tube (22). The separation tube (22) is rotatably mounted with a spiral blade (2211). The spiral blade (2211) has a conical structure that is smaller at the top and larger at the bottom. The separation tube (22) is fixed with a mesh frame (223) and a partition mesh (222) at the upper and lower ends of the spiral blade (2211), respectively. A through groove (201) and a return groove (202) are provided between the guide tube (21) and the separation tube (22), respectively located in the upper region and the bottom of the separation tube (22).

2. The ethanol recovery device for heparin sodium production wastewater according to claim 1, characterized in that: The separation tube (22) includes three chambers: upper, middle and lower. The upper chamber and the lower chamber are located above and below the spiral blade (2211), respectively, and the spiral blade (2211) is located in the middle chamber.

3. The ethanol recovery device for heparin sodium production wastewater according to claim 1, characterized in that: The separator (22) has a rotating shaft (221) rotatably mounted inside, and the spiral blade (2211) is fixedly mounted on the outside of the rotating shaft (221). The top of the separator (22) is fixedly provided with a shaft seat (226) rotatably connected to the top of the spiral blade (2211).

4. The ethanol recovery device for heparin sodium production wastewater according to claim 2, characterized in that: The upper end of the separation tube (22) is fixed with a discharge port (224), and the internal opening is connected to the upper chamber.

5. The ethanol recovery device for heparin sodium production wastewater according to claim 1, characterized in that: The spiral blade (2211) and the mesh frame (223) are combined to form an impurity pressing mechanism to promote the downward flow of wastewater.

6. The ethanol recovery device for heparin sodium production wastewater according to claim 1, characterized in that: Both the through channel (201) and the return channel (202) are fixedly installed with screens (203).

7. The ethanol recovery device for heparin sodium production wastewater according to claim 2, characterized in that: The bottom of the lower section of the separation tube (22) is provided with a guide slope (225), and the lower edge is connected to the return groove (202).

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