CN211921471U - Water trap of biodiesel preliminary treatment deacidification - Google Patents
Water trap of biodiesel preliminary treatment deacidification Download PDFInfo
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- CN211921471U CN211921471U CN202020354586.2U CN202020354586U CN211921471U CN 211921471 U CN211921471 U CN 211921471U CN 202020354586 U CN202020354586 U CN 202020354586U CN 211921471 U CN211921471 U CN 211921471U
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- hollow fiber
- fiber membrane
- reaction column
- deacidification
- biodiesel
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Abstract
The utility model provides a water trap of biodiesel preliminary treatment deacidification, mainly by the methyl alcohol elevated tank, the grease elevated tank, the flowmeter, the reaction column is constituteed, the methyl alcohol elevated tank, the grease elevated tank is respectively through flowmeter and reaction column pipe connection, be equipped with the blending tank between flowmeter and reaction column, the import of blending tank is in the lower part, the export is on upper portion, the stirring rake has in the jar, liquid and the inlet connection of reaction column lower part after the mixture, the back of reaction column still is connected with the hollow fiber membrane pipeline, the import of hollow fiber membrane is located the lower part inner wall of hollow fiber membrane, deacidification liquid outlet is located the upper portion of hollow fiber membrane, the deacidification liquid export still has the centrifugal pump connection at the back, the moisture outlet of hollow fiber membrane is located the lower part outer wall of hollow fiber membrane. The beneficial effects of the utility model, can carry out deacidification in succession and dewatering with the raw materials of preparation biodiesel to can satisfy the continuous supply of the raw materials of the transesterification reaction of preparation biodiesel, improve biodiesel's productivity.
Description
Technical Field
The utility model relates to a water trap of biodiesel's production preliminary treatment deacidification device belongs to the chemical industry and equips the field.
Background
Raw materials for preparing the biodiesel are mainly prepared from raw materials such as waste oil and waste oil, the raw materials often contain more free fatty acid and water, the transesterification process of the biodiesel is influenced, the free fatty acid is required to be less than 3% for the complete reaction for preparing the biodiesel, and the alkali and solid base catalyst is required to be stricter, the free fatty acid is required to be less than 0.5% (1 mgKOH/g), so the deacidification pretreatment of the raw materials is required for preparing the biodiesel, but the deacidification treatment process of the raw materials generates a small amount of water, so that the water content of the deacidified raw material liquid is higher, the subsequent transesterification of the biodiesel is influenced, and the deacidification treatment is required.
Disclosure of Invention
In order to enable the subsequent ester exchange reaction of the biodiesel to be smoothly carried out, the utility model provides a water removal device for biodiesel pretreatment deacidification, which mainly comprises a methanol head tank, an oil head tank, a flowmeter and a reaction column, wherein the methanol head tank and the oil head tank are respectively connected with the reaction column pipeline through the flowmeter, a mixing tank is arranged between the flowmeter and the reaction column, the inlet of the mixing tank is arranged at the lower part of the mixing tank, the outlet of the mixing tank is arranged at the upper part of the mixing tank, a stirring paddle is arranged in the mixing tank, the mixing tank is also provided with a heating rod at the lower part in the mixing tank, the mixed liquid is connected with the inlet at the lower part of the reaction column, the outlet of the reaction column is arranged at the upper part of the reaction column, the back of the reaction column is also connected with a hollow fiber membrane pipeline, the inlet of the hollow fiber membrane is arranged at the inner wall of the lower part of the hollow fiber membrane, the deacidification liquid outlet is positioned at the upper part of the hollow fiber membrane, a centrifugal pump is arranged behind the deacidification liquid outlet for connection, and the water outlet of the hollow fiber membrane is positioned on the outer wall of the lower part of the hollow fiber membrane.
Furthermore, the pore diameter of the hollow fiber membrane is 2-60 microns. The deacidification liquid deacidified by the reaction column enters from the lower part of the hollow fiber membrane, the deacidification liquid moves away from the inner wall, in the process of passing through the inner wall, small molecules in the deacidification liquid mainly permeate to the outer wall of the hollow fiber membrane through a pore sieve on the inner wall of the membrane, and water is separated out through the hollow fiber membrane, so that the aim of reducing the water content is fulfilled.
Furthermore, the outlet height of the mixing tank is higher than that of the reaction column.
Further, the outlet height of the reaction column is higher than the upper outlet height of the hollow fiber membrane.
In the utility model, under the stirring action of the mixing tank, the methanol and the grease are fully mixed, the lower part of the mixing tank is provided with the heating rod, the mixed liquid can be heated in the mixing process to improve the temperature of the mixed liquid, the heating temperature of the mixed liquid is controlled to be 50-60 ℃, the temperature is too low, the reaction of methanol in a reaction column and free fatty acid in grease is not facilitated, the temperature is too high, the methanol is easy to volatilize, the methanol loss is serious, in the reaction column part, the materials are subjected to esterification reaction with free fatty acid in the oil and the methanol under the action of a solid catalyst, so that the aim of deacidification can be fulfilled, the hollow fiber membrane behind the reaction column can separate the moisture generated by the esterification reaction and the moisture carried by the raw material, therefore, the water removal after the deacidification pretreatment of the raw materials can meet the requirements of the transesterification reaction for preparing the biodiesel.
Preferably, in order to achieve a better water removal effect, the upper deacidification liquid outlet of the hollow fiber membrane is connected with the centrifugal pump, and the deacidification liquid is pumped by the centrifugal pump, so that the flow of the deacidification liquid in the hollow fiber membrane is increased, and the water removal efficiency of the hollow fiber membrane is improved.
Preferably, in order to achieve better deacidification efficiency, the reaction column is further provided with a heat preservation sleeve or a heating sleeve, so that the mixed solution can be subjected to deacidification reaction at the optimal temperature.
Preferably, in order to achieve better water removal efficiency, the temperature of the mixed liquid in the hollow fiber membrane is controlled to be 50-60 ℃, and the moisture outlet of the hollow fiber membrane is controlled by an electromagnetic valve.
The beneficial effects of the utility model, can carry out deacidification in succession and dewatering with the raw materials of preparation biodiesel to can satisfy the continuous supply of the raw materials of the transesterification reaction of preparation biodiesel, improve biodiesel's productivity.
Drawings
Figure 1 is the water trap sketch map of the utility model discloses biodiesel preliminary treatment deacidification.
Wherein: 1-methanol head tank, 2-grease head tank, 3-flowmeter, 4-mixing tank, 5-reaction column, 6-hollow fiber membrane, 7-heating rod, 8-centrifugal pump.
Detailed Description
In figure 1, a water removal device for biodiesel pretreatment deacidification, which mainly comprises a methanol head tank 1, a grease head tank 2, a flow meter 3 and a reaction column 5, wherein the methanol head tank 1 and the grease head tank 2 are respectively connected with the reaction column 5 through a pipeline by the flow meter 3, a mixing tank 4 is arranged between the flow meter 3 and the reaction column 5, the inlet of the mixing tank 4 is arranged at the lower part of the mixing tank 4, the outlet is arranged at the upper part of the mixing tank 4, a stirring paddle is arranged in the mixing tank, methanol and grease are fully mixed together by stirring of the stirring paddle of the mixing tank 4 so as to be convenient for esterification reaction of free fatty acid in the methanol and the grease, a heating rod 7 is arranged at the lower part in the mixing tank 4, the methanol and the grease are slowly heated in the mixing process, the temperature is controlled to be between 50 and 60 ℃, the mixed liquid slowly enters the reaction column 5 through the outlet at the upper part of the mixing tank 4, and the mixed liquid enters from the, the upper part is removed, in the reaction column 5 part, the materials are subjected to esterification reaction with free fatty acid in methanol and grease under the action of a solid catalyst, so that the purpose of deacidification can be achieved, the reaction column 5 is provided with two reaction columns 5, the two reaction columns 5 are connected in series, most of mixed liquor is firstly subjected to rapid pretreatment deacidification in the first reaction column 5, the mixed liquor is further subjected to complete deacidification in the second reaction column 5, the deacidification reaction temperature of the reaction column 5 is controlled to be 50-60 ℃, the reaction column 5 can be provided with a heat insulation sleeve or a heating sleeve to ensure that the mixed liquor can be subjected to deacidification reaction at the optimal temperature, the deacidified deacidification liquid enters the hollow fiber membrane 6 for dewatering, the deacidification liquid enters from the lower part of the hollow fiber membrane 6 and runs through the inner wall, and in the process of passing through the inner wall, main water molecules in the deacidification liquid permeate to the outer wall of the hollow fiber membrane 6 through a pore sieve, water is separated out through the hollow fiber membrane 6, deacidification liquid after water removal flows out from the upper part of the hollow fiber membrane 6, and is extracted through the centrifugal pump 8 connected with the upper part deacidification liquid outlet, so that the flowing of the deacidification liquid in the hollow fiber membrane 6 is increased, the temperature of the deacidification liquid is controlled to be 50-60 ℃, and the water removal efficiency of the hollow fiber membrane 6 is improved.
The above embodiments only express the embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (4)
1. The utility model provides a water trap of biodiesel preliminary treatment deacidification mainly comprises methyl alcohol elevated tank, grease elevated tank, flowmeter, reaction column, and methyl alcohol elevated tank, grease elevated tank are respectively through flowmeter and reaction column pipe connection, its characterized in that: be equipped with the blending tank between flowmeter and reaction column, the blending tank, its import in the lower part of blending tank, the export has the stirring rake in the upper portion of blending tank, the blending tank, its jar internal lower part still is equipped with the heating rod, liquid and reaction column lower part access connection after mixing, the reaction column, its export is located the upper portion of reaction column, and the back of reaction column still is connected with hollow fiber membrane pipeline, hollow fiber membrane, its import is located hollow fiber membrane's lower part inner wall, hollow fiber membrane, its deacidification liquid export is located hollow fiber membrane's upper portion, deacidification liquid export still has the centrifugal pump connection at the back, hollow fiber membrane, its moisture outlet is located hollow fiber membrane's lower part outer wall.
2. The water removal device for biodiesel pretreatment deacidification according to claim 1, wherein: the pore diameter of the hollow fiber membrane is 2-60 microns.
3. The water removal device for biodiesel pretreatment deacidification according to claim 1, wherein: the outlet height of the mixing tank is higher than that of the reaction column.
4. The water removal device for biodiesel pretreatment deacidification according to claim 1, wherein: the outlet height of the reaction column is higher than the upper outlet height of the hollow fiber membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020354586.2U CN211921471U (en) | 2020-03-19 | 2020-03-19 | Water trap of biodiesel preliminary treatment deacidification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020354586.2U CN211921471U (en) | 2020-03-19 | 2020-03-19 | Water trap of biodiesel preliminary treatment deacidification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211921471U true CN211921471U (en) | 2020-11-13 |
Family
ID=73355844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020354586.2U Expired - Fee Related CN211921471U (en) | 2020-03-19 | 2020-03-19 | Water trap of biodiesel preliminary treatment deacidification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211921471U (en) |
-
2020
- 2020-03-19 CN CN202020354586.2U patent/CN211921471U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |