Device for reducing glycerin content of fatty acid methyl ester

Abstract

The utility model provides a device for reducing the glycerol content of fatty acid methyl ester, which comprises a bottom plate, a settling tank and a receiving tank, both sides of the top of the bottom plate are fixedly provided with bearing plates, a fixed plate is fixedly arranged between the bottoms of the opposite sides of the two bearing plates, the settling tank penetrates through the top of the fixed plate, and the receiving tank is arranged on the bottom plate. And the receiving tank penetrates through the space between the opposite sides of the two bearing plates and is positioned right above the settling tank. Compared with the prior art, the settling tank disclosed by the utility model has the following beneficial effects that the plurality of transverse partition plates are arranged in the settling tank to form an independent settling space; due to the design of the shunt pipes, the top ends of the shunt pipes are flush with the tops of the transverse partition plates, and the electromagnetic valves at the bottom ends are controlled by the same power supply control switch, the solution which is not settled and separated can be uniformly conveyed to the tops of the transverse partition plates, the standing and settling area is greatly increased, the settling speed is increased, more glycerol can be settled to the bottom of the tank, and the separation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a device for reducing the glycerol content of fatty acid methyl ester, and belongs to the field of fatty acid methyl ester processing equipment. BACKGROUND

[0002] In the process of producing fatty acid methyl ester by the acid-base two-step method, the neutral oil components in the raw material undergo ester exchange reaction with methanol under the catalysis of KOH to generate fatty acid methyl ester and byproduct glycerol. In the application of fatty acid methyl ester, the residual glycerol can cause the performance of the product to decrease. For example, in the case of biodiesel, too high glycerol content can make the combustion performance of biodiesel deteriorate, produce carbon deposition, and reduce the power and service life of the engine. In the production of surfactants, the residual glycerol can affect the surface activity of surfactants and reduce their performance in terms of dirt removal and emulsification; therefore, it is necessary to reduce the glycerol content in fatty acid methyl ester.

[0003] In the prior art, the method for reducing the glycerol content combines distillation, condensation, and precipitation. The liquid fatty acid methyl ester glycerol mixture is heated into a gas phase, transported to a primary condenser for condensation, and a large amount of fatty acid methyl ester solution is extracted. The fatty acid methyl ester and glycerol vapor are then transported to a secondary condenser for secondary condensation, and the liquid after secondary condensation is transported to a settling tank for settling. Since the density of glycerol is greater than that of fatty acid methyl ester, glycerol is deposited at the bottom of the settling tank. Since the settling tank is in the shape of a cylinder, the internal settling area is limited despite the large volume, which reduces the separation efficiency of glycerol and fatty acid methyl ester.

[0004] Therefore, the utility model provides a device for reducing the glycerol content of fatty acid methyl ester to solve the above problems. SUMMARY

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a device for reducing the glycerol content of fatty acid methyl ester to solve the problems of small settling area and low separation efficiency of glycerol and fatty acid methyl ester mentioned in the background.

[0006] In order to achieve the above object, the utility model is through the following technical scheme to realize: a device for reducing the content of fatty acid methyl ester glycerin, including bottom plate, settling tank and receiving tank, both sides of the top of bottom plate are all fixedly installed with bearing plate, the bottom between opposite sides of two bearing plates is fixedly installed with fixed plate, the top of fixed plate is penetrated by settling tank, the opposite side between two bearing plates of receiving tank is penetrated and located the top of settling tank, the inside of settling tank is all fixedly connected with a plurality of transverse partition plates from top to bottom, the bottom center of each transverse partition plate is penetrated with shunt pipe, the both sides of settling tank and the top of each transverse partition plate are all communicated with a plurality of branch pipes, the both sides of fixed plate top are penetrated with liquid discharge pipe, and the opposite side of every two branch pipes is extended to two liquid discharge pipes respectively.

[0007] Further, the branch pipe is communicated with the liquid discharge pipe, the top end of the liquid discharge pipe is in the form of plugging, and the bottom center of the settling tank is communicated with a glycerin discharge pipe.

[0008] Further, the bottom end of the liquid discharge pipe extends downward to the lower side of the fixed plate, an electromagnetic valve is installed on each branch pipe, and the top end of each shunt pipe is flush with the top of each transverse partition plate.

[0009] Further, a vertical partition plate is longitudinally installed in the inside of the receiving tank, and the inside of the receiving tank is divided into a first condensation receiving chamber and a second condensation receiving chamber by the vertical partition plate.

[0010] Further, a conveying pipe is communicated between the bottom center of the receiving tank and the top of the settling tank, and the settling tank is communicated with the second condensation receiving chamber through the conveying pipe.

[0011] Further, a fatty acid methyl ester discharge pipe is communicated with one side of the bottom of the receiving tank, and the top end of the fatty acid methyl ester discharge pipe is communicated with the first condensation receiving chamber.

[0012] Further, a first liquid conveying pipe and a second liquid conveying pipe are respectively communicated with the both sides of the top of the receiving tank, the first liquid conveying pipe is communicated with the first condensation receiving chamber, and the second liquid conveying pipe is communicated with the second condensation receiving chamber.

[0013] The utility model has the advantages that:

[0014] By arranging a plurality of transverse partition plates in the settling tank, independent settling spaces are formed, the shunt pipe is designed, the top end of the shunt pipe is flush with the top of the transverse partition plate, the bottom end of the electromagnetic valve is controlled by the same power supply control switch, the characteristics ensure that the solution that is not separated by settling can be uniformly conveyed to the top of each transverse partition plate, the settling area is greatly increased, the settling speed is accelerated, more glycerin can be settled to the bottom of the tank, and the separation efficiency is improved.

[0015] After the sedimentation is completed, the deposited glycerol and fatty acid methyl ester solution can be discharged in sequence by controlling the electromagnetic valves on the two sides of the sedimentation tank respectively, precise liquid discharge is realized, re-mixing of the two is avoided, and at the same time, for the residual glycerol in the shunt pipe, the residual glycerol can be concentrated and discharged by opening the electromagnetic valve on the shunt pipe and the glycerol discharge pipe, the residual amount of glycerol is greatly reduced, the purity of the glycerol byproduct is improved, the influence of the residual glycerol on subsequent production is avoided, and the quality of the fatty acid methyl ester product is further ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, made with reference to the attached drawings:

[0017] Figure 1 It is a perspective view of the device for reducing the glycerol content of fatty acid methyl ester of the present application;

[0018] Figure 2 It is a front view of the device for reducing the glycerol content of fatty acid methyl ester of the present application;

[0019] Figure 3 It is a main sectional view of the device for reducing the glycerol content of fatty acid methyl ester of the present application;

[0020] Figure 4 It is Figure 3 It is a top view of the transverse partition plate.

[0021] In the figure: 1, bottom plate; 2, bearing plate; 3, fixed plate; 4, receiving tank; 5, sedimentation tank; 6, transverse partition plate; 7, shunt pipe; 8, branch pipe; 9, liquid discharge pipe; 10, vertical partition plate; 11, first-stage condensation receiving chamber; 12, second-stage condensation receiving chamber; 13, first-stage liquid conveying pipe; 14, second-stage liquid conveying pipe; 15, fatty acid methyl ester discharge pipe; 16, conveying pipe; 17, glycerol discharge pipe. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects achieved by the present application easy to understand, the present application will be further described below in conjunction with specific embodiments.

[0023] Please refer to Figures 1-4The utility model provides a technical scheme: a device for reducing the content of fatty acid methyl ester glycerin, which comprises a bottom plate 1, a settling tank 5 and a receiving tank 4, both sides of the top of the bottom plate 1 are fixedly provided with bearing plates 2, the bottom between the opposite sides of the two bearing plates 2 is fixedly provided with a fixed plate 3, the settling tank 5 penetrates the top of the fixed plate 3, the receiving tank 4 penetrates between the opposite sides of the two bearing plates 2 and is located directly above the settling tank 5, a plurality of transverse partitions 6 are fixedly and uniformly connected inside the settling tank 5 from top to bottom, the transverse partitions 6 divide the inside of the settling tank 5 into a plurality of independent settling spaces, the number of the transverse partitions 6 is generally between 3-5, and the specific number is set according to actual production requirements and separation efficiency requirements, a shunt pipe 7 penetrates the bottom center of each transverse partition 6, the settling spaces separated by the transverse partitions 6 are connected through the shunt pipe 7, so that the secondary condensation solution that has not been separated and settled can be uniformly transported to the top of each transverse partition 6, the standing and settling area of the glycerin and fatty acid methyl ester mixture can be increased, the mixture has a wider space for settling and separating, and thus the settling speed is accelerated, a plurality of branch pipes 8 are communicated with the top of each transverse partition 6 on both sides of the settling tank 5, a liquid discharge pipe 9 penetrates both sides of the top of the fixed plate 3, one end of every two branch pipes 8 extends to the opposite side of the two liquid discharge pipes 9, respectively, the branch pipe 8 is communicated with the liquid discharge pipe 9, the top end of the liquid discharge pipe 9 is in a plugging state, and a glycerin discharge pipe 17 is communicated with the bottom center of the settling tank 5.

[0024] Please refer to Figures 2-3 The bottom end of the liquid discharge pipe 9 extends downward below the fixed plate 3, the function of the liquid discharge pipe 9 is to discharge the liquid in the settling tank 5 after settling treatment for subsequent treatment, an electromagnetic valve is installed on each branch pipe 8, the top end of each shunt pipe 7 is flush with the top of each transverse partition 6, so that solution residue on the top of the transverse partition 6 can be avoided, an electromagnetic valve is installed at the bottom end of each shunt pipe 7 and is provided with the same power control switch, a vertical partition 10 is vertically installed inside the receiving tank 4, the vertical partition 10 divides the inside of the receiving tank 4 into a primary condensation receiving chamber 11 and a secondary condensation receiving chamber 12, the existence of the vertical partition 10 effectively avoids the secondary back-mixing and dissolution of the glycerin and the collected fatty acid methyl ester product, from the structure, the primary condensation receiving chamber 11 is used for receiving the fatty acid methyl ester after primary condensation, and the secondary condensation receiving chamber 12 is used for receiving the mixture after the fatty acid methyl ester after secondary condensation and a small amount of glycerin vapor condensation.

[0025] Please refer to Figures 2-3The bottom center of the receiving tank 4 is communicated with the top of the settling tank 5 through a conveying pipe 16, the settling tank 5 is communicated with the secondary condensing receiving chamber 12 through the conveying pipe 16, for conveying the mixture in the secondary condensing receiving chamber 12 to the settling tank 5 for further sedimentation separation, one side of the bottom of the receiving tank 4 is communicated with a fatty acid methyl ester discharge pipe 15, the top end of the fatty acid methyl ester discharge pipe 15 is communicated with the primary condensing receiving chamber 11, for discharging the fatty acid methyl ester with higher purity collected in the primary condensing receiving chamber 11, both sides of the top of the receiving tank 4 are respectively communicated with a primary liquid conveying pipe 13 and a secondary liquid conveying pipe 14, the primary liquid conveying pipe 13 is communicated with the primary condensing receiving chamber 11, the secondary liquid conveying pipe 14 is communicated with the secondary condensing receiving chamber 12, the primary liquid conveying pipe 13 and the secondary liquid conveying pipe 14 are respectively connected with the external primary condenser and the secondary condenser, for conveying the condensed liquid to the corresponding chamber of the receiving tank 4.

[0026] Specific implementation: the fatty acid methyl ester preliminarily condensed by the external primary condenser is conveyed into the primary condensing receiving chamber 11 in the receiving tank 4 through the primary liquid conveying pipe 13, at the same time, the mixture of the fatty acid methyl ester and a small amount of glycerol steam condensed by the secondary condenser is conveyed into the secondary condensing receiving chamber 12 in the receiving tank 4 through the secondary liquid conveying pipe 14, the fatty acid methyl ester with higher purity collected in the primary condensing receiving chamber 11 can be discharged through the fatty acid methyl ester discharge pipe 15, as a finished product.

[0027] The mixture in the secondary condensing receiving chamber 12 is conveyed from the bottom center of the receiving tank 4 to the top of the settling tank 5 through the conveying pipe 16 by the action of gravity, the settling tank 5 is provided with a plurality of transverse partitions 6, which are divided into 3-5 independent sedimentation spaces, the secondary condensing solution not separated by sedimentation is uniformly conveyed to the top of each transverse partition 6 through the shunt pipe 7 at the bottom center of the transverse partition 6, since the top end of each shunt pipe 7 is flush with the top of the transverse partition 6, and the bottom end electromagnetic valve is controlled by the same power supply control switch, the orderly flow of the solution between the sedimentation spaces can be ensured, the standing sedimentation area of the glycerol and fatty acid methyl ester mixture is increased, and the sedimentation speed is accelerated, in the sedimentation process, the glycerol with larger density gradually sinks, and the fatty acid methyl ester is relatively in the upper layer.

[0028] After the sedimentation is completed, the electromagnetic valve on the branch pipe 8 connected with the right side liquid discharge pipe 9 of the sedimentation tank 5 is opened first, the glycerol deposited on the top of each horizontal partition plate 6 is discharged from the right side liquid discharge pipe 9 through the right side branch pipe 8, the electromagnetic valve on the right side branch pipe 8 is closed, the electromagnetic valve on the left side branch pipe 8 is opened, the fatty acid methyl ester solution on the top of the horizontal partition plate 6 is discharged from the branch pipe 8 and the other liquid discharge pipe 9, the electromagnetic valve on each shunt pipe 7 is opened at the same time, the residual glycerol in each shunt pipe 7 is transported downward, and the glycerol discharge pipe 17 is opened, so that the residual glycerol in the sedimentation tank 5 is discharged and collected for subsequent collection and treatment.

[0029] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. An apparatus for reducing the content of fatty acid methyl ester glycerol, comprising a base plate (1), a settling tank (5) and a receiving tank (4), characterized in that: The bottom plate (1) top of both sides are fixedly installed with bearing plate (2), two said bearing plate (2) between the bottom of the opposite side of the fixedly installed with fixed plate (3), the settling tank (5) through the top of fixed plate (3), the receiving tank (4) through two bearing plate (2) between the opposite side and located directly above the settling tank (5), the settling tank (5) from top to bottom are uniformly fixedly connected with a plurality of transverse partition plate (6), the bottom center of each transverse partition plate (6) is through the shunt pipe (7), the two sides of the settling tank (5) and located at the top of each transverse partition plate (6) are communicated with a plurality of branch pipe (8), the top of the fixed plate (3) is through the drainage pipe (9), every two branch pipe (8) away from one end respectively extend to the opposite side of two drainage pipe (9).

2. The apparatus of claim 1, wherein: The branch pipe (8) is communicated with the drainage pipe (9), the top end of the drainage pipe (9) is closed, the bottom center of the settling tank (5) is communicated with glycerol discharge pipe (17).

3. The apparatus of claim 1, wherein: The bottom end of the drainage pipe (9) extends downwardly below the fixed plate (3), each branch pipe (8) is provided with an electromagnetic valve, and the top end of each shunt pipe (7) is flush with the top of each transverse partition plate (6).

4. The apparatus of claim 1, wherein: The inside of the receiving tank (4) is longitudinally provided with a vertical partition plate (10), and the vertical partition plate (10) divides the inside of the receiving tank (4) into a first condensation receiving chamber (11) and a second condensation receiving chamber (12).

5. The apparatus of claim 4, wherein: The bottom center of the receiving tank (4) and the top of the settling tank (5) are communicated with a conveying pipe (16), and the settling tank (5) is communicated with the second condensation receiving chamber (12) through the conveying pipe (16).

6. The apparatus of claim 4, wherein: One side of the bottom of the receiving tank (4) is communicated with a fatty acid methyl ester discharge pipe (15), and the top end of the fatty acid methyl ester discharge pipe (15) is communicated with the first condensation receiving chamber (11).

7. The apparatus of claim 4, wherein: The top of the receiving tank (4) is respectively communicated with a first liquid conveying pipe (13) and a second liquid conveying pipe (14), the first liquid conveying pipe (13) is communicated with the first condensation receiving chamber (11), and the second liquid conveying pipe (14) is communicated with the second condensation receiving chamber (12). The top of the receiving tank (4) is respectively communicated with a first liquid conveying pipe (13) and a second liquid conveying pipe (14), the first liquid conveying pipe (13) is communicated with the first condensation receiving chamber (11), and the second liquid conveying pipe (14) is communicated with the second condensation receiving chamber (12).

Images