CN218306238U - Crude methyl ester distillation equipment - Google Patents
Crude methyl ester distillation equipment Download PDFInfo
- Publication number
- CN218306238U CN218306238U CN202222271467.2U CN202222271467U CN218306238U CN 218306238 U CN218306238 U CN 218306238U CN 202222271467 U CN202222271467 U CN 202222271467U CN 218306238 U CN218306238 U CN 218306238U
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- Prior art keywords
- methyl ester
- evaporation
- outlet
- communicated
- cavity
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- 150000004702 methyl esters Chemical class 0.000 title claims abstract description 90
- 238000004821 distillation Methods 0.000 title claims abstract description 44
- 238000001704 evaporation Methods 0.000 claims abstract description 66
- 230000008020 evaporation Effects 0.000 claims abstract description 38
- 238000009833 condensation Methods 0.000 claims abstract description 33
- 230000005494 condensation Effects 0.000 claims abstract description 33
- 239000012071 phase Substances 0.000 claims abstract description 31
- 239000007791 liquid phase Substances 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims description 18
- 239000000295 fuel oil Substances 0.000 claims description 16
- 239000010724 circulating oil Substances 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000012808 vapor phase Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 31
- 239000007792 gaseous phase Substances 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000008162 cooking oil Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 4
- 239000003225 biodiesel Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000004492 methyl ester group Chemical group 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Abstract
The utility model relates to a crude methyl ester distillation device, which comprises a distillation tower, wherein the distillation tower comprises an evaporation part, a condensation part and a re-evaporation part, and the evaporation part is provided with an evaporation cavity, a crude methyl ester inlet and a first gas phase outlet which are communicated with the evaporation cavity; the condensing part comprises a shell and a condensing unit, the shell is provided with a condensing cavity, a refined methyl ester outlet and a second gas phase outlet, the refined methyl ester outlet and the second gas phase outlet are communicated with the condensing cavity, the condensing part is arranged above the evaporating part and is in sealing connection with the evaporating part, the first gas phase outlet is communicated with the condensing cavity, and the condensing unit is arranged in the condensing cavity and is used for condensing methyl ester steam; the re-evaporation part covers the first gas phase outlet and is provided with a plurality of air holes for communicating the evaporation cavity with the condensation cavity. Compared with the prior art, the utility model provides a thick methyl ester distillation plant covers in first gaseous phase exit and has set up the portion of evaporating again, and the methyl ester of condensation is hindered by the portion of evaporating again and is gasified once more when exporting dripping to first gaseous phase, has avoided liquid phase methyl ester to drip back to evaporate the intracavity, has improved distillation efficiency.
Description
Technical Field
The utility model relates to a methyl ester processing technology field especially relates to a thick methyl ester distillation equipment.
Background
The illegal cooking oil generally refers to various inferior oils existing in life, such as recycled edible oil, repeatedly used frying oil, etc. The largest source of the swill-cooked dirty oil is an oil separation tank of a sewer of a large-scale urban restaurant.
For the treatment of the illegal cooking oil, a common method is to convert the illegal cooking oil into biodiesel by adopting a biological enzyme method. The main component of biodiesel is methyl ester, and crude methyl ester converted from illegal cooking oil needs distillation refining for use.
When the existing distillation tower is used for distilling methyl ester, a part of methyl ester condensed in a condenser drops back to a distillation area in the flowing process of the methyl ester in the condenser, and the distillation rate is reduced.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need to provide a crude methyl ester distillation apparatus, which solves the technical problem of the prior art that a part of condensed methyl ester drops back into the rectification region during distillation, thereby reducing the distillation rate.
The utility model provides a thick methyl ester distillation equipment, this thick methyl ester distillation equipment includes: the distillation tower comprises an evaporation part, a condensation part and a re-evaporation part, wherein the evaporation part is provided with an evaporation cavity, a crude methyl ester inlet and a first gas phase outlet which are communicated with the evaporation cavity; the condensing part comprises a shell and a condensing unit, the shell is provided with a condensing cavity, a refined methyl ester outlet and a second gas phase outlet, the refined methyl ester outlet and the second gas phase outlet are communicated with the condensing cavity, the condensing part is arranged above the evaporating part and is in sealing connection with the evaporating part, the first gas phase outlet is communicated with the condensing cavity, and the condensing unit is arranged in the condensing cavity and is used for condensing methyl ester steam; the re-evaporation part covers the first gas phase outlet, the re-evaporation part is provided with a plurality of air holes communicated with the evaporation cavity and the condensation cavity, and the re-evaporation part can generate heat to gasify the liquid phase methyl ester.
Furthermore, the condensing unit comprises an upper ring pipe, a lower ring pipe and a plurality of inclined pipes, the upper ring pipe and the lower ring pipe are fixedly connected with the inner wall of the shell respectively, a water inlet and a water outlet which are communicated with the outside of the condensing cavity are formed in the upper ring pipe and the lower ring pipe respectively, and the upper end and the lower end of each inclined pipe are communicated with the upper ring pipe and the lower ring pipe respectively.
Further, the inclined pipes are alternately arranged obliquely towards different directions.
Further, a reboiler communicated with the crude methyl ester inlet is included, and the reboiler is used for gasifying the crude methyl ester.
Furthermore, the device also comprises a return pipe and a return pump, wherein the evaporation part is also provided with a heavy oil outlet communicated with the bottom of the evaporation cavity, the return pipe is communicated with the heavy oil outlet and the reboiler, and the return pump is arranged on the return pipe.
Further, the rectification unit further comprises an exhaust pipe and a condenser, the exhaust pipe is communicated with the second gas phase outlet and the condenser, and the condenser is used for condensing the secondary methyl ester in the tail gas.
Furthermore, the air conditioner also comprises a vacuum unit, and the air inlet end of the vacuum unit is communicated with the condenser.
The system further comprises a circulating oil tank and a blocking net, wherein the circulating oil tank is communicated with the air outlet end of the vacuum unit, and the blocking net covers the air outlet of the circulating oil tank and is used for blocking oily substances and water-based substances in the tail gas.
Furthermore, the device also comprises a condensable liquid separating tank communicated with the circulating oil tank, wherein the condensable liquid separating tank is provided with an oily substance outlet positioned above and an aqueous substance outlet positioned below.
Furthermore, the first gas phase outlet is communicated with the top of the evaporation cavity, the second gas phase outlet is communicated with the top of the condensation cavity, and the refined methyl ester outlet is communicated with the bottom of the condensation cavity.
Compared with the prior art, the utility model provides a thick methyl ester distillation plant covers in first gaseous phase exit and has set up the portion of evaporating again, and the methyl ester of condensation is hindered by the portion of evaporating again and is gasified once more when exporting dripping to first gaseous phase, has avoided liquid phase methyl ester to drip back to evaporate the intracavity, has improved distillation efficiency.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, and to implement the technical means according to the content of the description, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an embodiment of a crude methyl ester distillation apparatus provided by the present invention;
FIG. 2 is a top view of the first vapor phase outlet;
FIG. 3 is a top view of the condensing unit of FIG. 1;
FIG. 4 isbase:Sub>A cross-sectional view of section A-A of FIG. 3;
fig. 5 is a schematic structural diagram of another embodiment of the crude methyl ester distillation apparatus provided by the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
Referring to fig. 1, the present invention provides a crude methyl ester distillation apparatus. The crude methyl ester distillation equipment can be applied to a production process for converting illegal cooking oil into biodiesel, namely methyl ester, and crude methyl ester is distilled and refined into refined methyl ester.
The crude methyl ester distillation apparatus comprises a distillation column 1, and the distillation column 1 comprises an evaporation part 11, a condensation part 12 and a re-evaporation part 13. The evaporation part 11 is provided with an evaporation cavity, a coarse methyl ester inlet 111 and a first gas phase outlet 112, wherein the coarse methyl ester inlet 111 and the first gas phase outlet are communicated with the evaporation cavity, and the coarse methyl ester enters the evaporation cavity through the coarse methyl ester inlet 111 and is discharged from the first gas phase outlet 112 after being heated and gasified. The crude methyl ester inlet 111 is preferably connected to the middle of the evaporation chamber and the first vapor phase outlet 112 is preferably connected to the top of the evaporation chamber to facilitate the discharge of methyl ester vapor.
The condensation part 12 comprises a shell 121 and a condensation unit 122, wherein the shell 121 is provided with a condensation cavity, a refined methyl ester outlet 1211 and a second gas phase outlet 1212 which are communicated with the condensation cavity. The condensing part 12 is disposed above the evaporating part 11 and hermetically connected to the evaporating part 11, the outlet of the first gas phase 112 is communicated with the condensing cavity, and the condensing unit 122 is disposed in the condensing cavity for condensing methyl ester vapor. The outlet 1211 for the purified methyl ester is preferably connected to the bottom of the condensation chamber and the outlet for the second gaseous phase is preferably connected to the top of the condensation chamber. The methyl ester vapor enters the condensation chamber from the first gas phase outlet 112, is condensed into liquid methyl ester by the condensation unit 122 and then is discharged from the fine methyl ester outlet 1211, and other gas phase impurities become tail gas and are discharged from the second gas phase outlet 1212.
Referring to fig. 2, the re-evaporation portion 13 covers the first gas phase outlet 112, and the re-evaporation portion 13 has a plurality of air holes communicating the evaporation chamber and the condensation chamber, and the size of the air holes is preferably smaller than the diameter of the liquid droplets to prevent methyl ester from directly passing through the air holes when dropping, thereby causing blocking failure. The re-evaporation section 13 has a heat generating function, and an electric heater may be incorporated therein to re-vaporize the liquid methyl ester dropped on the re-evaporation section 13.
Methyl ester condensed by the condensing unit 122 is blocked by the re-evaporation part 13 and is gasified again when dropping to the first gas phase outlet 112, so that liquid phase methyl ester is prevented from dropping back to the evaporation cavity, and the distillation efficiency is improved.
Referring to fig. 3 and 4, in the present embodiment, the condensing unit 122 includes an upper ring pipe 1221, a lower ring pipe 1222, and a plurality of inclined pipes 1223, where the upper ring pipe 1221 and the lower ring pipe 1222 are both ring-shaped and are respectively fixedly connected to the inner wall of the housing 121, the upper ring pipe 1221 is located above the lower ring pipe 1222, the upper ring pipe 1221 and the lower ring pipe 1222 are respectively formed with a water inlet and a water outlet that are communicated with the outside of the condensing chamber, and the upper end and the lower end of the inclined pipe 1223 are respectively communicated with the upper ring pipe 1221 and the lower ring pipe 1222. Preferably, the inclined tubes 1223 are alternately arranged obliquely toward different directions. And also as in this embodiment, a plurality of inclined pipes 1223 are formed in a zigzag-shaped alternate arrangement to obtain a better condensation effect.
Referring to fig. 5, in other embodiments, a reboiler 2 is further provided, the reboiler 2 is communicated with a crude methyl ester inlet 111 and a crude methyl ester conveying pipe 3, the crude methyl ester conveying pipe 3 conveys the crude methyl ester into the reboiler 2 to be heated into a gaseous state, and the gasified crude methyl ester is conveyed into the evaporation cavity through the crude methyl ester inlet 111.
Preferably, the evaporation part 11 further has a heavy oil discharge port 113 communicating with the bottom of the evaporation chamber, and communicates the heavy oil discharge port 113 with the reboiler 2 through a return pipe 4, and a return pump 5 is provided in the return pipe 4 to drive the heavy oil to return from the heavy oil discharge port 113 to the reboiler 2.
After the crude methyl ester is completely gasified by the reboiler 2 and is input into the evaporation cavity, the temperature in the evaporation cavity is lower than that of the reboiler 2, so that heavy oil in the gas is condensed and collected at the bottom of the evaporation cavity and is discharged through a heavy oil discharge port 113, and the heavy oil also contains a small amount of methyl ester. In order to avoid waste, the heavy oil is conveyed back into the reboiler 2 through the return pipe 4 to be gasified again, and after a plurality of cycles, the content of methyl ester in the heavy oil is extremely low and is discharged through a heavy oil discharge pipe 41 connected with the return pipe 4.
In other embodiments, an exhaust pipe 6 and a condenser 7 are further provided, the exhaust pipe 6 is communicated with the second gas phase outlet 1212 and the condenser 7, the tail gas discharged from the condensation portion 12 enters the condenser 7 through the exhaust pipe 6, the condenser 7 is used for condensing the methine in the tail gas, and the methine is discharged from a liquid phase outlet at the bottom of the condenser 7.
A vacuum unit 8 can be arranged to be connected with the condenser 7, and the air inlet end of the vacuum unit 8 is communicated with the air outlet end of the condenser 7 and is used for forming negative pressure in the distillation tower 1 and reducing the temperature condition required by distillation.
The air outlet end of the vacuum unit 8 is communicated with the circulating oil tank 9, and the outlet of the circulating oil tank 9 is covered with a blocking net (not shown) which can block oily substances and aqueous substances in the tail gas and make the oily substances and the aqueous substances stay in the circulating oil tank 9. The condensable fluid separating tank 10 is communicated with the circulating oil tank 9, and the condensable fluid separating tank 10 is provided with an oily substance outlet 101 positioned at the upper part and an aqueous substance outlet 102 positioned at the lower part and used for separating and discharging oily substances and aqueous substances respectively.
Through the equipment, the crude methyl ester can be separated into refined methyl ester, heavy oil, hypomethyl ester, oily substances and aqueous substances by distillation, and then the refined methyl ester, the heavy oil, the hypomethyl ester, the oily substances and the aqueous substances are respectively recycled or treated.
The utility model provides a thick methyl ester distillation equipment covers in first gaseous phase exit and has set up the portion of evaporating again, and the methyl ester of condensation is hindered by the portion of evaporating again and is gasified once more when exporting dripping to first gaseous phase, has avoided liquid phase methyl ester to drip back to evaporate the intracavity, has improved distillation efficiency.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (10)
1. A crude methyl ester distillation apparatus, comprising: the distillation tower comprises an evaporation part, a condensation part and a re-evaporation part, wherein the evaporation part is provided with an evaporation cavity, a crude methyl ester inlet and a first gas phase outlet which are communicated with the evaporation cavity; the condensation part comprises a shell and a condensation unit, the shell is provided with a condensation cavity, a refined methyl ester outlet and a second gas phase outlet, the refined methyl ester outlet and the second gas phase outlet are communicated with the condensation cavity, the condensation part is arranged above the evaporation part and is in sealed connection with the evaporation part, the first gas phase outlet is communicated with the condensation cavity, and the condensation unit is arranged in the condensation cavity and is used for condensing methyl ester steam; the re-evaporation part covers the first gas phase outlet, the re-evaporation part is provided with a plurality of air holes communicated with the evaporation cavity and the condensation cavity, and the re-evaporation part can generate heat to gasify liquid-phase methyl ester.
2. The crude methyl ester distillation apparatus as claimed in claim 1, wherein said condensing unit comprises an upper loop, a lower loop and a plurality of inclined tubes, said upper loop and said lower loop are fixedly connected to the inner wall of said housing, said upper loop and said lower loop are further formed with a water inlet and a water outlet respectively communicating with the outside of said condensing chamber, and the upper and lower ends of said inclined tubes are respectively communicated with said upper loop and said lower loop.
3. The crude methyl ester distillation apparatus according to claim 2 wherein the inclined tubes are alternately inclined in different directions.
4. The crude methyl ester distillation apparatus of claim 1 further comprising a reboiler in communication with the crude methyl ester inlet, the reboiler being configured to vaporize crude methyl ester.
5. The crude methyl ester distillation apparatus according to claim 4, further comprising a return pipe and a return pump, wherein the evaporation section further has a heavy oil discharge port communicating with the bottom of the evaporation chamber, the return pipe communicates the heavy oil discharge port with the reboiler, and the return pump is provided in the return pipe.
6. The crude methyl ester distillation apparatus as claimed in claim 4, further comprising an exhaust pipe and a condenser, said exhaust pipe communicating said second vapor phase outlet and said condenser, said condenser being supplied with condensed secondary methyl esters in tail gas.
7. The crude methyl ester distillation apparatus as claimed in claim 6, further comprising a vacuum unit, wherein the inlet end of the vacuum unit is communicated with the condenser.
8. The crude methyl ester distillation equipment as claimed in claim 7, further comprising a circulating oil tank and a blocking net, wherein the circulating oil tank is communicated with the air outlet end of the vacuum unit, and the blocking net covers the air outlet of the circulating oil tank and is used for blocking oily substances and aqueous substances in the tail gas.
9. The crude methyl ester distillation apparatus as claimed in claim 8, further comprising a condensable liquid separating tank in communication with said circulating oil tank, said condensable liquid separating tank having an oily matter outlet located above and an aqueous matter outlet located below.
10. The crude methyl ester distillation apparatus of claim 1, wherein the first gas phase outlet is communicated with the top of the evaporation chamber, the second gas phase outlet is communicated with the top of the condensation chamber, and the fine methyl ester outlet is communicated with the bottom of the condensation chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222271467.2U CN218306238U (en) | 2022-08-26 | 2022-08-26 | Crude methyl ester distillation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222271467.2U CN218306238U (en) | 2022-08-26 | 2022-08-26 | Crude methyl ester distillation equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218306238U true CN218306238U (en) | 2023-01-17 |
Family
ID=84886015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222271467.2U Active CN218306238U (en) | 2022-08-26 | 2022-08-26 | Crude methyl ester distillation equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218306238U (en) |
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2022
- 2022-08-26 CN CN202222271467.2U patent/CN218306238U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 431600 Kaifa 2nd Road, Hanchuan economic and Technological Development Zone, Xiaogan City, Hubei Province Patentee after: Hubei Tianji Bioenergy Co.,Ltd. Country or region after: China Address before: 431600 Kaifa 2nd Road, Hanchuan economic and Technological Development Zone, Xiaogan City, Hubei Province Patentee before: HUBEI TIANJI NEW ENERGY LIMITED BY SHARE LTD. Country or region before: China |