CN105396315A - Ethyl vanillin rectification device - Google Patents
Ethyl vanillin rectification device Download PDFInfo
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- CN105396315A CN105396315A CN201510824538.9A CN201510824538A CN105396315A CN 105396315 A CN105396315 A CN 105396315A CN 201510824538 A CN201510824538 A CN 201510824538A CN 105396315 A CN105396315 A CN 105396315A
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Abstract
The invention belongs to the field of rectification device, and particularly discloses an ethyl vanillin rectification device which comprises a rectification column, a feed pipe, a heat exchanger and a heater, wherein a discharge opening is formed in the top of the rectification column; a residual liquid outlet is formed in the bottom of the rectification column; a raw material opening is formed in the middle of the rectification column; a first hot material inlet, a second hot material inlet, a first hot material outlet, a second hot material outlet, a cold material inlet and a cold material outlet are formed in the heat exchanger; the discharge opening is communicated with the first hot material inlet through a pipeline; the residual liquid outlet is communicated with the second hot material inlet through a pipeline; a material collecting vat is arranged at the first hot material outlet; a residual liquid collecting vat is arranged under the second hot material outlet; the feed pipe is communicated with the cold material inlet; the cold material outlet is communicated with the raw material opening of the rectification column through a pipeline; the heater is fixed at the bottom of the rectification column. The ethyl vanillin rectification device is used for preheating a raw ethyl vanillin product via heat energy of ethyl vanillin.
Description
Technical field
The present invention relates to rectifier unit field, be specifically related to a kind of rectifier unit of Ethyl vanillin.
Background technology
Ethyl vanillin, also known as ethyl vanillin, be white to micro-yellow scale crystalline powder, in sweet chocolate fragrance and the distinctive aroma of vanillic aldehyde, essentially no murder by poisoning, is widely used in the industries such as spices, cosmetics, food additives, medicine.
The mode that present domestic industry prepares Ethyl vanillin is generally adopt o-ethoxyphenol and glyoxalic acid, and condensation reaction under adding the alkali condition of NaOH at 35 ~ 45 DEG C, by its product acidifying, and then extracts unreacted o-ethoxyphenol.Remaining material adds NaOH and is heated to 100 DEG C, and then neutralize, extracting product Ethyl vanillin, then drying obtains product.Products obtained therefrom is semifinished product, containing a small amount of light component in semifinished product, 70%-80% Ethyl vanillin and about 20% heavy constituent, i.e. tar.Semifinished product also needs a separation and purification process, semifinished product is purified to food-grade Ethyl vanillin finished product.
The method of the double tower decompressing and continuous distillation of usual employing, concrete separation method is that Ethyl vanillin semifinished product is added common distillation still, carries out decompression simple distillation, and Ethyl vanillin, and a small amount of heavy constituent steams from still.Heavy constituent impurity is left, i.e. tar at the bottom of still.The material toluene steamed is that solvent carries out crystallization, and the vanillic aldehyde primary product that crystallization obtains adds in second distillation still again, carries out decompression simple distillation again, and the heavy constituent impurity in removing vanillic aldehyde, obtains vanillic aldehyde product.
In the distillation process of Ethyl vanillin, both needing to heat the semifinished product of Ethyl vanillin, and also having needed the light component cooling water to distilling to cool.Because mostly existing rectifier unit is that raffinate at the bottom of with rectifying column carries out preheating to semifinished product.But due in the semifinished product of Ethyl vanillin, Ethyl vanillin is evaporated, and the heat that Ethyl vanillin carries is more, so there is the problem insufficient to heat energy utilization.A kind of heat energy that can make full use of Ethyl vanillin of present urgent need carries out the rectifier unit of the Ethyl vanillin of preheating to the semifinished product of Ethyl vanillin.
Summary of the invention
The object of the present invention is to provide a kind of rectifier unit utilizing the heat energy of Ethyl vanillin the semifinished product of Ethyl vanillin to be carried out to the Ethyl vanillin of preheating.
For achieving the above object, technical scheme of the present invention is as follows:
The base case that this programme provides is: the rectifier unit of Ethyl vanillin, comprises rectifying column, feed pipe, heat exchanger and heater, and rectifying column top is provided with discharging opening, and rectifier bottoms is provided with raffinate outlet, is provided with raw material mouth in the middle part of rectifying column; Heat exchanger is provided with the first hot material import, the second heat expects import, the first heat expects outlet, the second heat expects outlet, and cold burden import, a cold burden export; With the first heat, discharging opening expects that import is connected by pipeline, with the second heat, raffinate outlet expects that import is connected by pipeline, and the first heat material outlet is provided with material collection bucket, and the second heat material outlet below is provided with raffinate collecting vessel; Feed pipe connects cold burden import, and cold burden outlet connects the raw material mouth of rectifying column by pipeline, heater is fixed on the bottom of rectifying column.
Operation principle and the advantage of this programme are: first, and the semifinished product of Ethyl vanillin enters into the middle part of rectifying column from mother tube through over-heat-exchanger, then start heater.The semifinished product of heater to Ethyl vanillin adds thermal rectification, first light component in semifinished product is distilled out from discharging opening, then the temperature improving heater is being continued, in semifinished product, Ethyl vanillin will evaporate, the Ethyl vanillin of evaporated enters into heat exchanger by pipeline, eventually pass cools down, collected by material collection bucket.Because whole work is continuous print, so when the semifinished product of Ethyl vanillin enters into heat exchanger from mother tube, because the outlet of discharging opening, raffinate connects heat exchanger by pipeline, so steam out, raffinate have higher temperature from rectifying column, under the effect of heat exchanger, heat in steam, raffinate carries out preheating to the semifinished product of Ethyl vanillin, semifinished product after preheating enters into rectifying column in the middle part of rectifying column, and then heater continues to add thermal rectification to semifinished product.Semifinished product after preheating, when by heating, can reduce the heat that semifinished product absorbs, reaches the object of economize energy.Heat exchanger, can carry out preheating to semifinished product on the one hand, on the other hand, can cool the rectifying product of Ethyl vanillin.
In the semifinished product of Ethyl vanillin, the light component of existence, heavy constituent are all the impurity needing to remove, and light component content is minimum, and the temperature of volatilization is low, in distillation process, evaporates at first.Because the Ethyl vanillin proportion in semifinished product is more maximum, when Ethyl vanillin is evaporated from discharge nozzle, when entering into heat exchanger, the heat that Ethyl vanillin distributes is far longer than the heat distributed in raffinate, discharging opening is utilized to be connected by pipeline with heat exchanger, allow the heat energy of Ethyl vanillin carry out preheating to its semifinished product, effectively utilize the heat energy of Ethyl vanillin, reach the object of economize energy.
Preferred version one: based on the preferred version of scheme, the pipeline between discharging opening and the first heat material import is provided with air exhauster.Gas in rectifying column is outwards extracted out by discharging opening by air exhauster, and the pressure in rectifying column can be made to reduce on the one hand, low pressure can reduce the boiling point of liquid, is conducive to Ethyl vanillin evaporation.
Preferred version two: based on the another preferred version of scheme: be also provided with condenser between the first heat material outlet of heat exchanger and material collection bucket.If when the rectifying product of semifinished product to Ethyl vanillin can not cool and put in place, can use condenser that the rectifying product of Ethyl vanillin are condensed, ensure cooling effect.
Preferred version three: the preferably preferred version of two: heat exchanger is that three mutual spiral windings of root flexible pipe form.Three mutual spiral windings of flexible pipe, can allow semifinished product in flexible pipe, and raffinate, rectifying product contact with each other across flexible pipe, and carry out heat exchange.In flexible pipe, make the flow direction of the flow direction of raffinate, rectifying product and semifinished product contrary, be more conducive to allowing raffinate and rectifying product jointly carry out sufficient preheating to semifinished product.
Accompanying drawing explanation
Fig. 1 is the structural representation of the rectifier unit embodiment of Ethyl vanillin of the present invention.
Detailed description of the invention
Below by detailed description of the invention, the present invention is further detailed explanation:
Reference numeral in Figure of description comprises: rectifying column 1, feed pipe 2, discharging opening 11, cold burden import 20, the outlet 111 of cold burden outlet 21, first heat material import 110, first heat material, the outlet 121 of raffinate outlet 12, second heat material import 120, second heat material, heater 3, condenser 4, air exhauster 5.
Embodiment is substantially as shown in Figure 1: the rectifier unit of Ethyl vanillin, comprises rectifying column 1, feed pipe 2, heat exchanger, heater 3, and rectifying column 1 top is provided with discharging opening 11, is provided with raffinate outlet 12, is provided with raw material mouth in the middle part of rectifying column 1 bottom rectifying column 1; Heat exchanger is provided with the first heat material import 110, second heat material import 120, first heat material outlet 111, second heat material outlet 121, cold burden import 20, cold burden outlet 21; With the first heat, discharging opening 11 expects that import 110 is connected by pipeline, with the second heat, raffinate outlet 12 expects that import 120 is connected by pipeline, and the first heat material outlet 111 is provided with material collection bucket, is provided with raffinate collecting vessel below the second heat material outlet 121; Feed pipe 2 connects cold burden import 20, and cold burden outlet 21 connects the raw material mouth of rectifying column 1 by pipeline, heater 3 is fixed on the bottom of rectifying column 1; Pipeline between discharging opening 11 and the first heat material import 110 is provided with air exhauster 5; Condenser 4 is also provided with between first heat material outlet 111 and material collection bucket; Heat exchanger is that three mutual spiral windings of root flexible pipe form.
During concrete use: first, the semifinished product of Ethyl vanillin enters into the middle part of rectifying column 1 from mother tube through over-heat-exchanger, then starts heater 3.The semifinished product of heater 3 pairs of Ethyl vanillins adds thermal rectification, first light component in semifinished product is distilled out from discharging opening 11, then the temperature improving heater 3 is being continued, in semifinished product, Ethyl vanillin will evaporate, the Ethyl vanillin of evaporated enters into heat exchanger by pipeline, eventually pass cools down, collected by material collection bucket.Because whole work is continuous print, so when the semifinished product of Ethyl vanillin enters into heat exchanger from mother tube, because discharging opening 11, raffinate outlet 12 connects heat exchanger by pipeline, so steam out, raffinate have higher temperature from rectifying column 1, under the effect of heat exchanger, heat in steam, raffinate carries out preheating to the semifinished product of Ethyl vanillin, semifinished product after preheating enters into rectifying column 1 in the middle part of rectifying column 1, and then heater 3 pairs of semifinished products continue to add thermal rectification.Semifinished product after preheating, when by heating, can reduce the heat that semifinished product absorbs, reaches the object of economize energy.Heat exchanger, can carry out preheating to semifinished product on the one hand, on the other hand, can cool the rectifying product of Ethyl vanillin.
Gas in rectifying column 1 is outwards extracted out by discharging opening 11 by air exhauster 5, and the pressure in rectifying column 1 can be made to reduce on the one hand, low pressure can reduce the boiling point of liquid, is conducive to Ethyl vanillin evaporation.Condenser 4 the rectifying product of semifinished product to Ethyl vanillin can not cool put in place time, the rectifying product of Ethyl vanillin can be made to condense, ensure cooling, rectifying effect.Heat exchanger is that three mutual spiral windings of flexible pipe form, and heat exchanger is by the semifinished product in flexible pipe, and raffinate, rectifying product contact with each other across the tube wall of flexible pipe, and carry out heat exchange.In flexible pipe, make the flow direction of the flow direction of raffinate, rectifying product and semifinished product contrary, be more conducive to allowing raffinate and rectifying product jointly carry out sufficient preheating to semifinished product.
In the semifinished product of Ethyl vanillin, the light component of existence, heavy constituent are all the impurity needing to remove, and light component content is minimum, and the temperature of volatilization is low, in distillation process, evaporates at first.Because the Ethyl vanillin proportion in semifinished product is more maximum, when Ethyl vanillin is evaporated from discharge nozzle, when entering into heat exchanger, the heat that Ethyl vanillin distributes is far longer than the heat distributed in raffinate, discharging opening 11 is utilized to be connected by pipeline with heat exchanger, thus reach the object effectively utilizing the heat energy in the rectifying product of Ethyl vanillin its semifinished product to be carried out to preheating, can also economize energy.
Above-described is only embodiments of the invention, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from structure of the present invention, some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, and the detailed description of the invention in description etc. record the content that may be used for explaining claim.
Claims (4)
1. the rectifier unit of Ethyl vanillin, is characterized in that, comprises rectifying column, feed pipe, heat exchanger and heater, and rectifying column top is provided with discharging opening, and rectifier bottoms is provided with raffinate outlet, is provided with raw material mouth in the middle part of rectifying column; Heat exchanger is provided with the first hot material import, the second heat expects import, the first heat expects outlet, the second heat expects outlet, and cold burden import, a cold burden export; With the first heat, discharging opening expects that import is connected by pipeline, with the second heat, raffinate outlet expects that import is connected by pipeline, and the first heat material outlet is provided with material collection bucket, and the second heat material outlet below is provided with raffinate collecting vessel; Feed pipe connects cold burden import, and cold burden outlet connects the raw material mouth of rectifying column by pipeline, heater is fixed on the bottom of rectifying column.
2. the rectifier unit of Ethyl vanillin according to claim 1, is characterized in that, the pipeline between discharging opening and the first heat material import is provided with air exhauster.
3. the rectifier unit of Ethyl vanillin according to claim 1, is characterized in that, is also provided with condenser between the first heat material outlet of heat exchanger and material collection bucket.
4. the rectifier unit of Ethyl vanillin according to claim 3, is characterized in that, heat exchanger is that three mutual spiral windings of root flexible pipe form.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510824538.9A CN105396315A (en) | 2015-11-24 | 2015-11-24 | Ethyl vanillin rectification device |
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| CN201510824538.9A CN105396315A (en) | 2015-11-24 | 2015-11-24 | Ethyl vanillin rectification device |
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| CN105396315A true CN105396315A (en) | 2016-03-16 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636733A (en) * | 2016-10-12 | 2017-05-10 | 佛山迅拓奥科技有限公司 | Corrosion-resistant and abrasion-resistant copper-manganese alloy target and preparation method thereof |
| CN106673982A (en) * | 2016-12-28 | 2017-05-17 | 重庆欣欣向荣精细化工有限公司 | Method for reducing coking of ethyl vanillin in production of ethyl vanillin |
| CN109178505A (en) * | 2018-09-21 | 2019-01-11 | 承德石油高等专科学校 | A kind of glycine bagging equipment and its use technique |
| CN110386867A (en) * | 2018-04-18 | 2019-10-29 | 嘉兴市中华化工有限责任公司 | A kind of serialization purification process of Ethyl vanillin |
| CN112245957A (en) * | 2020-09-27 | 2021-01-22 | 江西金凯化工有限公司 | Energy-concerving and environment-protective type chemical industry rectification equipment |
-
2015
- 2015-11-24 CN CN201510824538.9A patent/CN105396315A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636733A (en) * | 2016-10-12 | 2017-05-10 | 佛山迅拓奥科技有限公司 | Corrosion-resistant and abrasion-resistant copper-manganese alloy target and preparation method thereof |
| CN106636733B (en) * | 2016-10-12 | 2019-04-26 | 科美（广州）电子材料有限公司 | A kind of anticorrosive wear-resistant cupromanganese target and preparation method thereof |
| CN106673982A (en) * | 2016-12-28 | 2017-05-17 | 重庆欣欣向荣精细化工有限公司 | Method for reducing coking of ethyl vanillin in production of ethyl vanillin |
| CN110386867A (en) * | 2018-04-18 | 2019-10-29 | 嘉兴市中华化工有限责任公司 | A kind of serialization purification process of Ethyl vanillin |
| CN110386867B (en) * | 2018-04-18 | 2022-08-16 | 嘉兴市中华化工有限责任公司 | Continuous purification method of ethyl vanillin |
| CN109178505A (en) * | 2018-09-21 | 2019-01-11 | 承德石油高等专科学校 | A kind of glycine bagging equipment and its use technique |
| CN109178505B (en) * | 2018-09-21 | 2023-09-05 | 承德石油高等专科学校 | Glycine bagging equipment and application process thereof |
| CN112245957A (en) * | 2020-09-27 | 2021-01-22 | 江西金凯化工有限公司 | Energy-concerving and environment-protective type chemical industry rectification equipment |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160316 |
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| WD01 | Invention patent application deemed withdrawn after publication |