CN212067783U - Biodiesel byproduct crude glycerine continuous dealcoholization device - Google Patents
Biodiesel byproduct crude glycerine continuous dealcoholization device Download PDFInfo
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- CN212067783U CN212067783U CN202020432352.5U CN202020432352U CN212067783U CN 212067783 U CN212067783 U CN 212067783U CN 202020432352 U CN202020432352 U CN 202020432352U CN 212067783 U CN212067783 U CN 212067783U
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Abstract
The utility model discloses a continuous dealcoholization device for biodiesel byproduct crude glycerol.A No. 1 falling film heater is provided with a crude glycerol inlet a, a steam inlet b, a methanol outlet c, a discharge port d and a condensed water outlet e; the 2# falling film heater is provided with a feed inlet f, a heat conduction oil outlet g, a discharge outlet h, a heat conduction oil inlet i and a circulating inlet j, and a discharge outlet d is connected with the feed inlet f after being connected with the 1# pump; the evaporator is provided with a methanol outlet k, upper and lower ports l and m of a liquid level meter, a discharge port n, a circulating outlet o and a feed port p, a packing layer is arranged in the evaporator, the feed port p is connected with the discharge port h, and the circulating outlet o is connected with a circulating inlet j after being connected with a 2# pump; the flash evaporator is provided with a methanol outlet q, a crude glycerol outlet r and a feeding hole s, and is internally provided with a distribution pipe and a sieve plate, and a discharging hole n is connected with the feeding hole s after being connected with a 3# pump; and the methanol outlets c, k and q are connected with respective vacuum pumps. The utility model discloses degree of automation is high, the operation is high-efficient, dealcoholize effectually.
Description
Technical Field
The utility model relates to a biodiesel production facility, concretely relates to biodiesel byproduct crude glycerine continuous dealcoholization device.
Background
At present, the production of biodiesel generally adopts waste oil as raw material, and the main components of the waste oil are free fatty acid and triglyceride; free fatty acid in the waste oil is converted into fatty acid methyl ester (biodiesel) and water through esterification reaction, and after the water generated by the esterification reaction is removed, the triglyceride is converted into the biodiesel and the glycerol through ester exchange reaction. In order to improve the conversion rate of the transesterification reaction, excessive methanol is required to participate in the transesterification reaction, precipitation separation is carried out after the reaction is finished, most of the excessive methanol is dissolved in the glycerin generated by the reaction, and the mixture of the methanol, part of biodiesel and the glycerin is generally called as crude glycerin in the industry, so the methanol in the crude glycerin needs to be dealcoholized, separated and recycled. The existing crude glycerol dealcoholization device generally adopts a distillation kettle or a distillation tower device, belongs to intermittent production, and is characterized in that crude glycerol containing methanol and the like is conveyed into the distillation kettle or the distillation tower, the materials are discharged after the methanol is removed by heating, then the materials are fed again, and the process is repeated. The device has the defects of complex operation, long time, poor dealcoholization effect and low efficiency, and is not suitable for large-scale industrial production.
Disclosure of Invention
The utility model aims at providing a degree of automation height, convenient operation high efficiency, the effectual continuous dealcoholize device of biodiesel by-product crude glycerine of dealcoholize.
In order to realize the aim, the continuous dealcoholization device for the biodiesel byproduct crude glycerol comprises a No. 1 falling film heater, a No. 2 falling film heater, an evaporator, a flash evaporator, a No. 1 pump, a No. 2 pump, a No. 3 pump and a connecting pipeline; the No. 1 falling film heater is provided with a crude glycerin inlet a before dealcoholization, a steam inlet b, a No. 1 falling film heater methanol outlet c, a No. 1 falling film heater discharge port d and a distilled condensate water outlet e, and the No. 1 falling film heater methanol outlet c is connected with a vacuum pump through a pipeline; the 2# falling film heater is provided with a 2# falling film heater feed inlet f, a heat conduction oil outlet g, a 2# falling film heater discharge outlet h, a heat conduction oil inlet i and a circulation inlet j, and a 1# falling film heater discharge outlet d is connected with a 1# pump through a pipeline and then is connected with the 2# falling film heater feed inlet f; the evaporator is provided with an evaporator methanol outlet k, a liquid level meter upper port l, a liquid level meter lower port m, an evaporator discharge port n, a circulation outlet o and an evaporator feed inlet p, a packing layer is further arranged in the evaporator, the evaporator methanol outlet k is connected with a vacuum pump through a pipeline, the evaporator feed inlet p is connected with a 2# falling film heater discharge port h through a pipeline, and the circulation outlet o is connected with a circulation inlet j after being connected with a 2# pump through a pipeline; the flash evaporator is provided with a flash evaporator methanol outlet q, a dealcoholized crude glycerin outlet r and a flash evaporator feed inlet s, a distribution pipe and a sieve plate are further arranged in the flash evaporator, the flash evaporator methanol outlet q is connected with a vacuum pump through a pipeline, and an evaporator discharge port n is connected with the flash evaporator feed inlet s after being connected with a 3# pump through a pipeline.
The utility model discloses biodiesel byproduct crude glycerine continuous dealcoholizes device has following technical characterstic:
in order to improve the effect and efficiency of dealcoholizing the crude glycerol, the dealcoholization method of three groups of series devices is adopted to carry out three times of dealcoholization under the condition of certain vacuum degree: firstly, heating by steam, and removing most of methanol in a No. 1 falling film heater; then, circulating the material in a No. 2 falling film heater by using a No. 2 pump, heating the material at a temperature higher than that of steam by using heat conduction oil, and further removing the methanol in the material at a certain vacuum degree and a higher temperature; and finally, under higher vacuum degree, carrying out flash evaporation on the methanol in the material in a flash evaporator to further remove the methanol in the material.
The utility model discloses biodiesel byproduct crude glycerine continuous dealcoholizes device has following beneficial effect:
1. the adoption of the continuous feeding and discharging dealcoholization of the crude glycerol improves the automation control level, and has low labor intensity and high production efficiency.
2. Three groups of dealcoholization devices connected in series are adopted, so that the dealcoholization effect is improved.
3. The methanol content in the dealcoholized crude glycerol is low, the recovery rate of the methanol is obviously improved, and the production cost is greatly reduced.
Drawings
FIG. 1 is a schematic structural view of the continuous dealcoholization device for biodiesel byproduct crude glycerol of the present invention.
Fig. 2 is a schematic view of the structure of the # 1 falling film heater in fig. 1.
Fig. 3 is a schematic diagram of the 2# falling film heater of fig. 1.
Fig. 4 is a schematic view of the evaporator of fig. 1.
Fig. 5 is a schematic view of the structure of the flash evaporator in fig. 1.
Reference numerals: the device comprises a No. 1 falling film heater 1, a No. 2 falling film heater 2, an evaporator 3, a flash evaporator 4, a No. 1 pump 5, a No. 2 pump 6, a No. 3 pump 7, a crude glycerol inlet a before dealcoholization, a steam inlet b, a No. 1 falling film heater methanol outlet c, a No. 1 falling film heater discharge port d, a distilled condensate water outlet e, a No. 2 falling film heater feed inlet f, a heat transfer oil outlet g, a No. 2 falling film heater discharge port h, a heat transfer oil inlet i, a circulation inlet j, an evaporator methanol outlet k, a liquid level meter upper port l, a liquid level meter lower port m, an evaporator discharge port n, a circulation outlet o, an evaporator feed inlet p, a flash evaporator methanol outlet q, a crude glycerol outlet r after dealcoholization, and a flash evaporator feed inlet s.
Detailed Description
The continuous dealcoholization device for biodiesel byproduct crude glycerol of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-5, the continuous dealcoholization device for biodiesel byproduct crude glycerol of the present invention comprises a # 1 falling film heater 1, a # 2 falling film heater 2, an evaporator 3, a flash evaporator 4, a # 1 pump 5, a # 2 pump 6, a # 3 pump 7 and a connecting pipeline; the No. 1 falling film heater 1 is provided with a crude glycerin inlet a before dealcoholization, a steam inlet b, a No. 1 falling film heater methanol outlet c, a No. 1 falling film heater discharge port d and a distilled condensate water outlet e, and the No. 1 falling film heater methanol outlet c is connected with a vacuum pump through a pipeline; the 2# falling film heater 2 is provided with a 2# falling film heater feed inlet f, a heat conduction oil outlet g, a 2# falling film heater discharge outlet h, a heat conduction oil inlet i and a circulation inlet j, and a 1# falling film heater discharge outlet d is connected with the 2# falling film heater feed inlet f after being connected with a 1# pump 5 through a pipeline; the evaporator 3 is provided with an evaporator methanol outlet k, a liquid level meter upper port l, a liquid level meter lower port m, an evaporator discharge port n, a circulation outlet o and an evaporator feed inlet p, a packing layer is further arranged in the evaporator 3, the evaporator methanol outlet k is connected with a vacuum pump through a pipeline, the evaporator feed inlet p is connected with a 2# falling film heater discharge port h through a pipeline, and the circulation outlet o is connected with a circulation inlet j after being connected with a 2# pump 6 through a pipeline; the flash evaporator 4 is provided with a flash evaporator methanol outlet q, a dealcoholized crude glycerin outlet r and a flash evaporator feed inlet s, the flash evaporator 4 is also internally provided with a distribution pipe and a sieve plate, the flash evaporator methanol outlet q is connected with a vacuum pump through a pipeline, and an evaporator discharge port n is connected with the flash evaporator feed inlet s after being connected with a No. 3 pump 7 through a pipeline.
During working, crude glycerol before dealcoholization is fed from a crude glycerol inlet a before dealcoholization of the falling film heater 1, most of methanol is vaporized and separated from materials after steam heating, and methanol gas is led out from a methanol outlet c of the No. 1 falling film heater and recovered under the condition of certain vacuum degree to finish primary dealcoholization; discharging the material subjected to the first dealcoholization from a discharge hole d of a No. 1 falling film heater, conveying the material to a feed hole f of a No. 2 falling film heater through a No. 1 pump 5, and then heating again at a higher temperature; vaporized methanol and materials heated by the 2# falling film heater 2 enter from a feed inlet p of the evaporator, the materials in the evaporator 3 are sent to a circulating inlet j of the 2# falling film heater 2 through a 2# pump 6 after passing through a bottom circulating outlet o, the circularly heated materials are sent from the feed inlet p of the evaporator, the vaporized methanol and the materials are separated in the evaporator 3, and the vaporized methanol is led out from a methanol outlet k of the evaporator at the top of the evaporator 3 and recovered under the condition of certain vacuum degree, so that secondary dealcoholization is completed; the material in the evaporator 3 passes through a discharge hole n of the bottom evaporator and then is conveyed by a No. 3 pump 7 through a flash evaporator feed hole s, under the condition of higher vacuum degree, a small amount of methanol contained in the material is further removed in the flash evaporator 4, and the vaporized methanol is led out from a methanol outlet q of the flash evaporator at the top of the flash evaporator 4 and recovered, so that the third dealcoholization is completed; the crude glycerol after methanol removal is discharged from a crude glycerol outlet r at the bottom of the flash evaporator 4.
Claims (1)
1. The utility model provides a continuous dealcoholize device of biodiesel by-product crude glycerine, characterized by: the system comprises a No. 1 falling film heater, a No. 2 falling film heater, an evaporator, a flash evaporator, a No. 1 pump, a No. 2 pump, a No. 3 pump and a connecting pipeline; the No. 1 falling film heater is provided with a crude glycerin inlet (a) before dealcoholization, a steam inlet (b), a No. 1 falling film heater methanol outlet (c), a No. 1 falling film heater discharge port (d) and a distilled condensed water outlet (e), and the No. 1 falling film heater methanol outlet (c) is connected with a vacuum pump through a pipeline; the 2# falling film heater is provided with a 2# falling film heater feed inlet (f), a heat conduction oil outlet (g), a 2# falling film heater discharge port (h), a heat conduction oil inlet (i) and a circulation inlet (j), and a 1# falling film heater discharge port (d) is connected with the 2# falling film heater feed inlet (f) after being connected with a 1# pump through a pipeline; the evaporator is provided with an evaporator methanol outlet (k), a liquid level meter upper port (l), a liquid level meter lower port (m), an evaporator discharge port (n), a circulating outlet (o) and an evaporator feed port (p), a packing layer is further arranged in the evaporator, the evaporator methanol outlet (k) is connected with a vacuum pump through a pipeline, the evaporator feed port (p) is connected with a 2# falling film heater discharge port (h) through a pipeline, and the circulating outlet (o) is connected with a circulating inlet (j) after being connected with a 2# pump through a pipeline; the flash evaporator is provided with a flash evaporator methanol outlet (q), a dealcoholized crude glycerol outlet (r) and a flash evaporator feed inlet(s), a distribution pipe and a sieve plate are further arranged in the flash evaporator, the flash evaporator methanol outlet (q) is connected with a vacuum pump through a pipeline, and an evaporator discharge port (n) is connected with the flash evaporator feed inlet(s) after being connected with a 3# pump through a pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020432352.5U CN212067783U (en) | 2020-03-30 | 2020-03-30 | Biodiesel byproduct crude glycerine continuous dealcoholization device |
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| CN202020432352.5U CN212067783U (en) | 2020-03-30 | 2020-03-30 | Biodiesel byproduct crude glycerine continuous dealcoholization device |
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| CN212067783U true CN212067783U (en) | 2020-12-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111265903A (en) * | 2020-03-30 | 2020-06-12 | 龙岩卓越新能源股份有限公司 | Biodiesel byproduct crude glycerine continuous dealcoholization device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111265903A (en) * | 2020-03-30 | 2020-06-12 | 龙岩卓越新能源股份有限公司 | Biodiesel byproduct crude glycerine continuous dealcoholization device |
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