Preparation method and application of biodiesel

Abstract

The invention relates to the field of biodiesel production, in particular to a biodiesel preparation method and application thereof.The preparation method comprises the steps that raw materials needed for biodiesel preparation are weighed and subjected to impurity removal, and after the raw materials are subjected to impurity removal, the raw materials are smashed through smashing equipment; the yeast is uniformly distributed in the raw materials and is in full contact with the raw materials, so that the mixing time is shortened, and after the yeast is in full and uniform contact with the raw materials, the fermentation of the raw materials can be better promoted, the fermentation time is shortened, and the fermentation efficiency is improved; the problems that when yeast is added after a biodiesel raw material is crushed, the yeast needs to be fully stirred to be mixed with the raw material, the raw material stirring time in an existing preparation process is long, the yeast is not uniformly distributed in the raw material and is not fully contacted with the raw material, and the biodiesel fermentation time is long are solved.

Description

Technical Field

[0001] The invention relates to the technical field of biodiesel production, in particular to a biodiesel preparation method and application thereof. Background Art

[0002] Biodiesel refers to fatty acid methyl esters or ethyl esters formed by ester conversion of vegetable oils (such as rapeseed oil, soybean oil, peanut oil, corn oil, cottonseed oil, etc.), animal oils (such as fish oil, lard, beef tallow, mutton fat, etc.), waste oils or microbial oils with methanol or ethanol. Biodiesel is a typical "green energy" with good environmental performance, good engine starting performance, good fuel performance, wide source of raw materials, and renewable characteristics.

[0003] In the field of transportation, biodiesel is suitable for various diesel vehicles, including trucks, buses, passenger cars, etc., to reduce the impact of exhaust emissions on the environment; in the industrial field, biodiesel is used as a backup or auxiliary fuel in some small power plants or distributed energy systems, together with traditional fuels, to improve the stability and reliability of energy supply; in addition, in some areas, biodiesel can be used as a fuel for home heating, burned through special heating equipment to provide warmth for the family.

[0004] However, when yeast is added to the biodiesel raw materials after they are crushed, the yeast needs to be fully stirred and mixed with the raw materials. In the existing preparation process, the stirring of the raw materials takes a long time, and the yeast is not evenly distributed in the raw materials and does not contact the raw materials sufficiently, resulting in a long biodiesel fermentation time. Therefore, it does not meet the existing needs. In this regard, we propose a biodiesel preparation method and its application. Summary of the invention

[0005] The object of the present invention is to provide a method for preparing biodiesel and its application, so as to solve the problems proposed in the above background technology that when adding yeast to biodiesel raw materials after crushing, the yeast needs to be fully stirred and mixed with the raw materials, the stirring of the raw materials in the existing preparation process takes a long time, the yeast is not evenly distributed in the raw materials and the contact with the raw materials is not sufficient, resulting in a long biodiesel fermentation time.

[0006] To achieve the above object, the present invention provides the following technical solution: a method for preparing biodiesel, comprising the following steps:

[0007] S1: First, the raw materials required for preparing biodiesel are weighed and impurities are removed, and after the impurities are removed, the raw materials are crushed by a crushing device;

[0008] S2: After the raw materials are crushed, the crushed raw materials are added into the fermentation barrel according to the specified ratio;

[0009] S3: adding a specified amount of fermentation yeast to the mixed raw materials in the fermentation barrel, placing the fermentation barrel on a mixing device, and stirring the raw materials and yeast in the fermentation barrel by using the mixing device;

[0010] S4: After the raw materials in the fermentation barrel are stirred, the fermentation barrel is sealed and fermentation is carried out;

[0011] S5: When the raw materials in the fermentation barrel are fermenting, the internal temperature of the fermentation barrel is controlled and hydrogen is added in time until the raw materials are completely fermented;

[0012] S6: After the fermentation is completed, the biodiesel obtained in the fermentation barrel is cooled, distilled and purified.

[0013] Preferably, the mixing device comprises a fixed frame, the fixed frame is fixed to the ground and the fermentation barrel is placed on the upper surface of the bottom end of the fixed frame, a telescopic hydraulic rod is fixed to the bottom surface of the top end of the fixed frame, and a hanging block is fixed to the bottom end of the telescopic hydraulic rod.

[0014] Preferably, a hybrid motor is detachably mounted on the inner side of the suspension block, two symmetrically distributed L-shaped suspension blocks are fixed to the bottom end of the suspension block, the output shaft end of the hybrid motor extends vertically downward and passes through the suspension block, and a rotating column is fixed to the output shaft end of the hybrid motor.

[0015] Preferably, a clamping ring groove is provided on the outer side of the top end of the rotating column, and the bottom ends of the two L-shaped suspension blocks are bent 90 degrees toward the inner side of the clamping ring groove and clamped in the clamping ring groove.

[0016] Preferably, a rotating support frame is fixed to the outer side of the rotating column, a plurality of fixing rods are fixed to the bottom surface of the rotating support frame, and the plurality of fixing rods are distributed in a circular array around the axis of the rotating column.

[0017] Preferably, a mixing assembly is fixed to the bottom end of the fixed rod, and the mixing assembly includes a plurality of special-shaped fixed rods, a first fixed end block is fixed to one end of the special-shaped fixed rod, a second fixed end block is fixed to the other end of the special-shaped fixed rod, and the first fixed end block is fixed to the bottom end of the fixed rod.

[0018] Preferably, a rotating mixing disk is provided between the first fixed end block and the second fixed end block which are in the same vertical plane, a rotating connecting circular plate is fixed at the center of the rotating mixing disk, a rotating ball is fixed at the center of the rotating connecting circular plate, rotating shafts are fixed on both sides of the rotating ball, and the ends of the two rotating shafts are respectively inserted into the ends of the first fixed end block and the second fixed end block.

[0019] Preferably, a plurality of auxiliary mixing shovels are distributed in a circular array on the outer surface of the rotating mixing disk, and both ends of the rotating shaft are connected to the first fixed end block and the second fixed end block through ball bearings.

[0020] Preferably, an auxiliary motor is fixed inside the first fixed end block, a driving bevel gear is fixed to the output shaft end of the auxiliary motor, one side of the driving bevel gear is meshedly connected with a transmission bevel gear, and the transmission bevel gear is fixed to the end of the rotating shaft inserted in the first fixed end block.

[0021] Based on the above-mentioned method for preparing biodiesel, the present invention also provides an application of biodiesel, and the biodiesel prepared by the above-mentioned method for preparing biodiesel is used as transportation fuel, industrial power generation fuel, and household heating fuel.

[0022] The present invention utilizes a rotating ball, a rotating connecting circular plate, and a rotating shaft to support a rotating mixing disk, and at this time the rotating mixing disk maintains an inclined state, and then drives a driving bevel gear and a transmission bevel gear to rotate through an auxiliary motor, so that the inclined rotating mixing disk drives an auxiliary mixing shovel plate to perform a circular motion around the axis of the rotating shaft, and the positions of raw materials inside and outside and upper and lower layers in a fermentation barrel are exchanged, so that the raw materials are mixed more fully and evenly in a short time, and yeast is evenly distributed in the raw materials and fully contacts with the raw materials, thereby shortening the mixing time, and after the yeast is fully and evenly contacted with the raw materials, it can better promote the fermentation of the raw materials and shorten the fermentation time, thereby improving the fermentation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 for Figure 2 A magnified view of the structure at center A;

[0025] Figure 3 It is a structural schematic diagram of the rotating support frame of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the mixing assembly of the present invention;

[0027] Figure 5 It is an enlarged view of the local structure of the mixing assembly of the present invention;

[0028] Figure 6 It is a structural cross-sectional view of the first fixed end block of the present invention. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] See also Figures 1 to 6 , is a mixing device provided by the present invention. Based on the mixing device of the present invention, the present invention provides a method for preparing biodiesel, comprising the following steps:

[0031] S1: First, the raw materials required for preparing biodiesel are weighed and impurities are removed, and after the impurities are removed, the raw materials are crushed by a crushing device;

[0032] S2: After the raw materials are crushed, the crushed raw materials are added into the fermentation tank 2 according to the specified ratio;

[0033] S3: adding a specified amount of fermentation yeast to the mixed raw materials in the fermentation barrel 2, placing the fermentation barrel 2 on a mixing device, and stirring the raw materials and yeast in the fermentation barrel 2 by using the mixing device;

[0034] S4: After the raw materials in the fermentation barrel 2 are stirred, the fermentation barrel 2 is sealed and fermented;

[0035] S5: When the raw materials in the fermentation tank 2 are fermenting, the internal temperature of the fermentation tank 2 is controlled and hydrogen is added in time until the raw materials are completely fermented;

[0036] S6: After the fermentation is completed, the biodiesel obtained by fermentation in the fermentation tank 2 is cooled, distilled and purified.

[0037] like Figure 1 and Figure 2 As shown, the mixing device includes a fixed frame 1, which is fixed on the ground and a fermentation barrel 2 is placed on the upper surface of the bottom end of the fixed frame 1. A telescopic hydraulic rod 3 is fixed to the bottom surface of the top of the fixed frame 1, and a hanging block 4 is fixed to the bottom end of the telescopic hydraulic rod 3. A mixing motor 6 is detachably installed on the inner side of the hanging block 4. Two symmetrically distributed L-shaped hanging blocks 9 are fixed to the bottom end of the hanging block 4. The output shaft end of the mixing motor 6 is vertically downward and passes through the hanging block 4. A rotating column 7 is fixed to the output shaft end of the mixing motor 6. A clamping ring groove 10 is provided on the outer side of the top end of the rotating column 7. The bottom ends of the two L-shaped hanging blocks 9 are bent 90 degrees toward the inner side of the clamping ring groove 10 and clamped in the clamping ring groove 10. The rotating column 7 is suspended and supported by two L-shaped hanging blocks 9 to ensure that the mixing motor 6 can smoothly drive the rotating column 7 to rotate after being powered on, and the rotating column 7 will not fall down during the rotation process.

[0038] like Figures 3 to 6As shown, a rotating support frame 8 is fixed to the outside of the rotating column 7, and a plurality of fixing rods 11 are fixed to the bottom surface of the rotating support frame 8. The plurality of fixing rods 11 are distributed in a circular array around the axis of the rotating column 7, and a mixing assembly 5 is fixed to the bottom end of the fixing rods 11.

[0039] The mixing assembly 5 includes a plurality of special-shaped fixed rods 502, a first fixed end block 504 is fixed to one end of the special-shaped fixed rod 502, a second fixed end block 505 is fixed to the other end of the special-shaped fixed rod 502, the first fixed end block 504 is fixed to the bottom end of the fixed rod 11, and the mixing assembly 5 is fixed by the rotating support frame 8 and the fixed rod 11, so that the mixing assembly 5 rotates simultaneously with the rotating column 7, and the raw materials and yeast in the fermentation barrel 2 are mixed and stirred by the rotating mixing assembly 5, so that the yeast is evenly distributed in the raw materials and is in full contact with the raw materials.

[0040] A rotating mixing disk 501 is provided between the first fixed end block 504 and the second fixed end block 505 in the same vertical plane, a rotating connecting circular plate 507 is fixed at the center of the rotating mixing disk 501, a rotating ball 506 is fixed at the center of the rotating connecting circular plate 507, rotating shafts 508 are fixed on both sides of the rotating ball 506, the ends of the two rotating shafts 508 are respectively inserted into the ends of the first fixed end block 504 and the second fixed end block 505, a plurality of auxiliary mixing shovels 503 are distributed in a circular array on the outer surface of the rotating mixing disk 501, both ends of the rotating shaft 508 are connected to the first fixed end block 504 and the second fixed end block 505 through ball bearings, an auxiliary motor 509 is fixed inside the first fixed end block 504, and a driving bevel gear is fixed to the output shaft end of the auxiliary motor 509 510, one side of the driving bevel gear 510 is meshedly connected with a transmission bevel gear 511, and the transmission bevel gear 511 is fixed to the end of the rotating shaft 508 inserted in the first fixed end block 504, and the rotating ball 506, the rotating connecting circular plate 507, and the rotating shaft 508 are used to support the rotating mixing disk 501, and at this time, the rotating mixing disk 501 remains in a tilted state, and then the driving bevel gear 510 and the transmission bevel gear 511 are driven by the auxiliary motor 509 to rotate, so that the tilted rotating mixing disk 501 drives the auxiliary mixing shovel plate 503 to make a circular motion around the axis of the rotating shaft 508, and the positions of the raw materials inside and outside and the upper and lower layers in the fermentation barrel 2 are exchanged, so that the raw materials are mixed more fully and evenly in a short time, and the yeast is evenly distributed in the raw materials and is in full contact with the raw materials.

[0041] In actual application, the biodiesel preparation method provided by the present invention is to put the raw materials that have been crushed and proportioned into the fermentation barrel 2, and add a sufficient amount of fermentation yeast into the fermentation barrel 2, then place the fermentation barrel 2 on the fixed frame 1, turn on the power of the mixing equipment and start it, and after the telescopic hydraulic rod 3 is energized, it drives the hanging block 4, the rotating column 7, the rotating support frame 8 and the mixing component 5 to descend, so that the mixing component 5 is immersed in the raw materials inside the fermentation barrel 2, at this time, the mixing motor 6 and the auxiliary motor 509 are energized and started at the same time, and after the mixing motor 6 is energized, it drives the rotating column 7, the rotating support frame 8 and the fixed rod 11 to rotate in a circle around the axis of the rotating column 7, and at this time, the fixed rod 11 drives the mixing component 5 to rotate in a circle as a whole, so that the mixing component 5 rotates and stirs the raw materials in the fermentation barrel 2, and at the same time, the auxiliary motor 509 is energized and started and drives the driving bevel gear 510 to rotate, and after the driving bevel gear 510 rotates, it drives the rotating shaft 508, the rotating connecting circular plate 507 and the rotating ball 506 to rotate simultaneously through the transmission bevel gear 511, and at this time, the rotating The rotating ball 506 drives the rotating mixing disk 501 to rotate around the axis of the rotating shaft 508 by rotating the connecting circular plate 507. At this time, the rotating rotating mixing disk 501 drives the auxiliary mixing shovel plates 503 distributed in a circular array on its outer surface to make a circular motion around the axis of the rotating shaft 508. Since the rotating mixing disk 501 is tilted at this time, the rotating auxiliary mixing shovel plates 503 drive the raw materials and yeast in the fermentation barrel 2 to be passively stirred along the circular motion direction of the auxiliary mixing shovel plates 503. The rotating mixing disk 501 is driven by the mixing motor 6 to rotate around the axis of the rotating column 7. At the same time, the rotating mixing disk 501 drives the auxiliary mixing shovel plates 503 to rotate around the axis of the rotating shaft 508, so that the raw materials and yeast inside the fermentation barrel 2 move irregularly in the fermentation barrel 2, ensuring that the yeast is evenly distributed in the raw materials and fully contacts with the raw materials, shortening the mixing time, and after the yeast is fully and evenly contacted with the raw materials, it can better promote the fermentation of the raw materials and shorten the fermentation time, thereby improving the fermentation efficiency.

[0042] Based on the above-mentioned method for preparing biodiesel, the present invention also provides an application of biodiesel, and the biodiesel prepared by the above-mentioned method for preparing biodiesel is used as transportation fuel, industrial power generation fuel, and household heating fuel.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A method for preparing biodiesel, characterized in that: The following steps are involved: S1: weighing and removing impurities from the raw materials required for preparing biodiesel, and crushing the raw materials using a crushing device after the raw materials are removed from the impurities; S2: After the raw materials are crushed, the crushed raw materials are added into the fermentation barrel according to the specified ratio; S3: adding a specified amount of fermentation yeast to the mixed raw materials in the fermentation barrel, placing the fermentation barrel on a mixing device, and stirring the raw materials and yeast in the fermentation barrel by using the mixing device; S4: After the raw materials in the fermentation barrel are stirred, the fermentation barrel is sealed and fermentation is carried out; S5: When the raw materials in the fermentation barrel are fermenting, the internal temperature of the fermentation barrel is controlled and hydrogen is added in time until the raw materials are completely fermented; S6: After the fermentation is completed, the biodiesel obtained in the fermentation barrel is cooled, distilled and purified.

2. The method for preparing biodiesel according to claim 1, characterized in that: The mixing device comprises a fixed frame, the fixed frame is fixed on the ground and the fermentation barrel is placed on the upper surface of the bottom end of the fixed frame, a telescopic hydraulic rod is fixed on the bottom surface of the top end of the fixed frame, and a hanging block is fixed on the bottom end of the telescopic hydraulic rod.

3. The method for preparing biodiesel according to claim 2, characterized in that: A hybrid motor is detachably mounted on the inner side of the suspension block, two symmetrically distributed L-shaped suspension blocks are fixed to the bottom end of the suspension block, the output shaft end of the hybrid motor extends vertically downward and passes through the suspension block, and a rotating column is fixed to the output shaft end of the hybrid motor.

4. The method for preparing biodiesel according to claim 3, characterized in that: A clamping ring groove is arranged on the outer side of the top end of the rotating column, and the bottom ends of the two L-shaped suspension blocks are bent 90 degrees toward the inner side of the clamping ring groove and clamped in the clamping ring groove.

5. The method for preparing biodiesel according to claim 4, characterized in that: A rotating support frame is fixed on the outer side of the rotating column, and a plurality of fixing rods are fixed on the bottom surface of the rotating support frame. The plurality of fixing rods are distributed in a circular array around the axis of the rotating column.

6. The method for preparing biodiesel according to claim 5, characterized in that: A mixing assembly is fixed to the bottom end of the fixing rod, and the mixing assembly includes a plurality of special-shaped fixing rods, a first fixed end block is fixed to one end of the special-shaped fixing rod, a second fixed end block is fixed to the other end of the special-shaped fixing rod, and the first fixed end block is fixed to the bottom end of the fixing rod.

7. The method for preparing biodiesel according to claim 6, characterized in that: A rotating mixing disk is provided between the first fixed end block and the second fixed end block in the same vertical plane, a rotating connecting circular plate is fixed at the center of the rotating mixing disk, a rotating ball is fixed at the center of the rotating connecting circular plate, rotating shafts are fixed on both sides of the rotating ball, and the ends of the two rotating shafts are respectively inserted into the ends of the first fixed end block and the second fixed end block.

8. The method for preparing biodiesel according to claim 7, characterized in that: A plurality of auxiliary mixing shovels are distributed in a circular array on the outer surface of the rotating mixing disk, and both ends of the rotating shaft are connected to the first fixed end block and the second fixed end block through ball bearings.

9. The method for preparing biodiesel according to claim 8, characterized in that: An auxiliary motor is fixed inside the first fixed end block, a driving bevel gear is fixed to the output shaft end of the auxiliary motor, one side of the driving bevel gear is meshedly connected with a transmission bevel gear, and the transmission bevel gear is fixed to the end of the rotating shaft inserted in the first fixed end block.

10. An application of biodiesel, characterized in that: The biodiesel prepared by the method for preparing biodiesel according to any one of claims 1 to 9 is used as transportation fuel, industrial power generation fuel, and household heating fuel.

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