CN211635261U - Double-stage flash evaporation dealcoholization device - Google Patents
Double-stage flash evaporation dealcoholization device Download PDFInfo
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- CN211635261U CN211635261U CN201922173138.2U CN201922173138U CN211635261U CN 211635261 U CN211635261 U CN 211635261U CN 201922173138 U CN201922173138 U CN 201922173138U CN 211635261 U CN211635261 U CN 211635261U
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Abstract
The utility model discloses a doublestage flash distillation dealcoholize device, include: a crude ester storage tank, a neutralization reaction kettle, an atmospheric flash tank, a first heater, a vacuum flash tank, a second heater and a crude alcohol storage tank; the crude ester storage tank is connected with the input end of a neutralization reaction kettle through a feeding pipeline, the output end of the neutralization reaction kettle is connected with the input end of a first heater through a pipeline, the output end of the first heater is connected with the input end of an atmospheric distillation tank through a pipeline, the output end of the atmospheric flash tank is connected with the input end of a second heater through a pipeline, the output end of the second heater is connected with the input end of a vacuum flash tank through a pipeline, and the output end of the vacuum flash tank is connected with the crude alcohol storage tank through a pipeline; the phosphoric acid storage tank is connected with a feed pipeline. The utility model discloses in through setting up two flash tanks, guaranteed the evaporation area of thick methyl ester, reduced the content of methyl alcohol in the thick methyl ester.
Description
Technical Field
The utility model relates to a biological energy technical field, more specifically the saying so relates to a doublestage flash distillation dealcoholize device.
Background
In the production process of producing biodiesel (fatty acid methyl ester) by using waste animal and vegetable oil, a low-boiling-point industrial raw material methanol with a boiling point of 63.5 ℃ is required; in the methyl esterification synthesis reaction process, in order to improve the conversion rate of the biodiesel product, the methanol is excessively recycled; after the methyl esterification synthesis reaction is completed, a large amount of methanol exists in the crude fatty acid methyl ester, and the methanol must be removed to carry out the subsequent distillation production. In the existing dealcoholization technology, glycerin (glycerol) and dissolved soap exist in crude ester, so that the crude ester has a wrapping effect on methanol, a part of methanol cannot be vaporized and removed, the dealcoholization effect is influenced, the precipitation of the glycerin and the dissolved soap is not facilitated, great burden is brought to a subsequent distillation process, the yield is influenced, and the production scale is restricted.
Therefore, how to provide a two-stage flash dealcoholization device capable of reducing the content of residual methanol is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least.
Therefore, an object of the utility model is to provide a doublestage flash distillation dealcoholize device, include: the device comprises a crude ester storage tank, a feeding pipeline, a neutralization reaction kettle, an atmospheric flash tank, a first heater, a vacuum flash tank, a second heater and a crude alcohol storage tank;
the crude ester storage tank is connected with the input end of the neutralization reaction kettle through a feeding pipeline, the output end of the neutralization reaction kettle is connected with the input end of the first heater through a pipeline, the output end of the first heater is connected with the input end of the normal-pressure flash tank through a pipeline, the output end of the normal-pressure flash tank is connected with the input end of the second heater through a pipeline, the output end of the second heater is connected with the input end of the vacuum flash tank through a pipeline, and the output end of the vacuum flash tank is connected with the crude alcohol storage tank through a pipeline;
the phosphoric acid storage tank is connected with the feeding pipeline.
The utility model has the advantages that: the utility model ensures the evaporation area of the coarse methyl ester and reduces the entrainment of methanol in the coarse methyl ester by arranging the vacuum flash tank and the normal-pressure flash tank; through two-stage flash dealcoholization, the dealcoholization temperature is reduced, continuous mechanized operation is realized, the dealcoholization time is reduced, and the residual methanol content is reduced to 0-0.1%.
Preferably, the system further comprises a neutralization crude ester pump, wherein the input end of the neutralization crude ester pump is connected with the bottom end of the neutralization reaction kettle through a pipeline, and the output end of the neutralization crude ester pump is respectively connected with the top end of the neutralization reaction kettle and the input end of the first heater through pipelines.
Preferably, the system further comprises an atmospheric flash pump, wherein an input end of the atmospheric flash pump is connected with an output end of the atmospheric flash tank through a pipeline, and an output end of the atmospheric flash pump is connected with an input end of the first heater through a pipeline. The device is used for conveying materials in the neutralization reaction kettle to the first heater.
Preferably, the system further comprises a vacuum flash pump, wherein the input end of the vacuum flash pump is respectively connected with the output end of the atmospheric flash pump through a pipeline, and the output end of the vacuum flash pump is respectively connected with the input end of the second heater and the crude alcohol storage tank through pipelines. For conveying the material in the atmospheric flash tank to the second heater.
Two heaters are arranged to ensure the evaporation temperature of the methanol, and the volatility of the methanol is further improved in vacuum.
Preferably, the system further comprises a vacuum cooling device and a micro-vacuum cooling device, wherein the vacuum cooling device is connected with the top end of the vacuum flash tank; and the micro vacuum cooling device is connected with the top end of the normal-pressure flash tank. Can promote the crude fatty acid methyl ester containing methanol to be quickly atomized, and the methanol is changed into methanol gas to be evaporated.
According to the technical scheme, compared with the prior art, the utility model discloses a two-stage flash distillation dealcoholization device, which has the advantages of simple device, easy manufacture and the like, and reduces the production cost of biodiesel; and quickly carries out vacuum dealcoholization on the methanol, and the methanol amount after dealcoholization is reduced to 0 to 0.1 percent, thereby improving the working efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural view provided by the present invention;
the method comprises the following steps of 1-crude ester storage tank, 2-phosphoric acid storage tank, 3-neutralization reaction kettle, 4-first heater, 5-atmospheric flash tank, 6-second heater, 7-vacuum flash tank, 8-neutralization crude ester pump, 9-atmospheric flash pump, 10-vacuum flash pump, 11-crude alcohol storage tank, 12-vacuum cooling device and 13-micro vacuum cooling device.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The embodiment of the utility model discloses doublestage flash distillation dealcoholize device, include: the device comprises a crude ester storage tank 1, a feeding pipeline, a phosphoric acid storage tank 2, a neutralization reaction kettle 3, an atmospheric flash tank 5, a first heater 4, a vacuum flash tank 7, a second heater 6 and a crude alcohol storage tank 11;
the crude ester storage tank 1 is connected with the input end of a neutralization reaction kettle 3 through a feeding pipeline, the output end of the neutralization reaction kettle 3 is connected with the input end of a first heater 4 through a pipeline, the output end of the first heater 4 is connected with the input end of an atmospheric flash tank 5 through a pipeline, the output end of the atmospheric flash tank 5 is connected with the input end of a second heater 6 through a pipeline, the output end of the second heater 6 is connected with the input end of a vacuum flash tank 7 through a pipeline, and the output end of the vacuum flash tank 7 is connected with a crude alcohol storage tank 11 through a pipeline;
the phosphoric acid storage tank 2 is connected with a feeding pipeline.
In one embodiment, the system further comprises a neutralization crude ester pump 8, wherein the input end of the neutralization crude ester pump 8 is connected with the bottom end of the neutralization reaction kettle 3 through a pipeline, and the output end of the neutralization crude ester pump 8 is respectively connected with the top end of the neutralization reaction kettle 3 and the input end of the first heater 4 through pipelines.
In one embodiment, the system further comprises an atmospheric flash pump 9, wherein an input end of the atmospheric flash pump 9 is connected with an output end of the atmospheric distillation tank through a pipeline, and an output end of the atmospheric flash pump is connected with an input end of the first heater 4 through a pipeline.
In one embodiment, a vacuum flash pump 10 is further included, and an input end of the vacuum flash pump 10 is connected with an output end of the atmospheric flash pump 9 through a pipeline, and an output end is respectively connected with an input end of the second heater 6 and the crude alcohol storage tank 11 through a pipeline.
In one embodiment, the device further comprises a vacuum cooling device 12 and a micro-vacuum cooling device 13, wherein the vacuum cooling device 12 is connected with the top end of the vacuum flash tank 7; the micro-vacuum cooling device 13 is connected with the top end of the atmospheric flash tank 5.
The working principle is as follows: the crude fatty acid methyl ester containing the alkali methanol in the crude ester storage tank 1 enters a feeding pipeline, the adding amount of phosphoric acid in the phosphoric acid storage tank 2 is controlled to be 0.5-3 percent of the crude fatty acid methyl ester, the phosphoric acid enters the feeding pipeline to be mixed with the crude fatty acid methyl ester, the pH value is adjusted to be 7, then the mixed material enters a neutralization reaction kettle 3 (the temperature is controlled to be 30-60 ℃, the stirring speed is 50-80 rpm) to stay for 1-3h, the mixed material enters a first heater 4 through a neutralization crude ester pump 8, the mixed material is heated by the first heater 4 to control the temperature to be 100-130 ℃, then the mixed material enters an atmospheric flash tank 5 through a pipeline (the vacuum pressure is controlled to be 0-0.01MPa, the temperature is controlled to be 80-120 ℃), the crude fatty acid methyl ester containing the methanol is rapidly atomized under the vacuum drive of a micro-vacuum cooling device 1312, the methanol is changed into methanol gas to be evaporated, at the moment, the methanol content is 1-2%, the crude fatty acid methyl ester after methanol evaporation is cooled and then enters a second heater 6 for heating through a normal pressure flash pump 9, and then enters a vacuum flash tank 7 through a vacuum flash pump 10 (the vacuum is controlled at-0.095-0.1 MPa, the temperature is controlled at 100-.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (5)
1. A dual stage flash dealcoholization apparatus comprising: the device comprises a crude ester storage tank, a feeding pipeline, a phosphoric acid storage tank, a neutralization reaction kettle, an atmospheric flash tank, a first heater, a vacuum flash tank, a second heater and a crude alcohol storage tank;
the crude ester storage tank is connected with the input end of the neutralization reaction kettle through a feeding pipeline, the output end of the neutralization reaction kettle is connected with the input end of the first heater through a pipeline, the output end of the first heater is connected with the input end of the normal-pressure flash tank through a pipeline, the output end of the normal-pressure flash tank is connected with the input end of the second heater through a pipeline, the output end of the second heater is connected with the input end of the vacuum flash tank through a pipeline, and the output end of the vacuum flash tank is connected with the crude alcohol storage tank through a pipeline;
the phosphoric acid storage tank is connected with the feeding pipeline.
2. The two-stage flash dealcoholization device according to claim 1, further comprising a neutralization crude ester pump, wherein the input end of the neutralization crude ester pump is connected with the bottom end of the neutralization reaction kettle through a pipeline, and the output end of the neutralization crude ester pump is respectively connected with the top end of the neutralization reaction kettle and the input end of the first heater through pipelines.
3. The two-stage flash dealcoholization device according to claim 1, further comprising an atmospheric flash pump, wherein an input end of the atmospheric flash pump is connected with an output end of the atmospheric flash tank through a pipeline, and an output end of the atmospheric flash pump is connected with an input end of the first heater through a pipeline.
4. The two-stage flash dealcoholization device according to claim 3, further comprising a vacuum flash pump, wherein an input end of the vacuum flash pump is connected with an output end of the atmospheric flash pump through a pipeline, and an output end of the vacuum flash pump is respectively connected with an input end of the second heater and the crude alcohol storage tank through a pipeline.
5. The two-stage flash dealcoholization device according to claim 1, further comprising a vacuum cooling device and a micro-vacuum cooling device, wherein the vacuum cooling device is connected with the top end of the vacuum flash tank; and the micro vacuum cooling device is connected with the top end of the normal-pressure flash tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922173138.2U CN211635261U (en) | 2019-12-06 | 2019-12-06 | Double-stage flash evaporation dealcoholization device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922173138.2U CN211635261U (en) | 2019-12-06 | 2019-12-06 | Double-stage flash evaporation dealcoholization device |
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| CN211635261U true CN211635261U (en) | 2020-10-09 |
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| CN201922173138.2U Active CN211635261U (en) | 2019-12-06 | 2019-12-06 | Double-stage flash evaporation dealcoholization device |
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