CN107021871A - The purification process and its device of a kind of biodiesel byproduct crude glycerin - Google Patents
The purification process and its device of a kind of biodiesel byproduct crude glycerin Download PDFInfo
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- CN107021871A CN107021871A CN201710311892.0A CN201710311892A CN107021871A CN 107021871 A CN107021871 A CN 107021871A CN 201710311892 A CN201710311892 A CN 201710311892A CN 107021871 A CN107021871 A CN 107021871A
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- separator
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
Abstract
The invention discloses a kind of purification process of biodiesel byproduct crude glycerin and device, inert carrier gas of the purification process using the crude glycerine raw material extracted from crude glycerine material container in flowing is filled with inert filler as charging together injection and assembles the separator of having heaters with lower, the temperature of the separator is controlled at 100-320 DEG C, separator throat-fed flow control is cooled down and collected to effluent in 10 200mL/min, the outlet connection cooling device of the separator.There is method according to the present invention step to be simple and convenient to operate, without using other chemical reagent, cost is low the characteristics of.The glycerine of obtained purifying is suitable as catalytic dehydration acrolein, the step of chlorination saponification two and prepares the raw material of the reactions such as epoxychloropropane, and the crude glycerine for being relatively free of purifying does raw material, can improve reaction rate, extends catalyst life.
Description
Technical field
The invention belongs to chemical field, in particular to the purification process and dress of a kind of biodiesel byproduct crude glycerin
Put.
Background technology
Glycerine, i.e. glycerine, are a kind of polyol compounds simple in construction, have in different fields and widely should
With.Its preparation has a variety of methods, including chemical synthesis, carbohydrate fermentation method and the biodiesel preparation using ester exchange.
In recent years, with the yield sharp increase of Global biodiesel, the market supply of glycerine increases increasingly.Therefore, people are not yet
Disconnected effort research converts glycerol into the higher chemical products of other added values.For example, chlorine can be passed through with glycerine as raw material
Change effect and dehydrochlorination reaction prepare the epoxychloropropane that added value is higher, and it is the important source material of synthetic epoxy resin.
Or under catalysis of solid catalyst effect, glycerine can be dewatered reaction generation methacrylaldehyde, and then be oxidized to acrylic acid, one
Plant very important polymerized monomer.
However, the crude glycerine obtained from biodiesel usually contains plurality of impurities, mainly including inorganic salts, aliphatic acid
(ester), water, methanol etc..Due to the presence of these impurity, when making glycerine progress next step conversion reaction, reaction rate is very slow, or
Person inactivates catalysts, influences the life-span.Therefore, generally require and crude glycerine is subjected to purification process, could enter as raw material
Row next step conversion reaction.Conventional crude glycerine purification process generally comprises multiple steps, such as acidifying/saponification, neutralization, mistake
Filter/centrifugation, distillation, extraction/ion exchange, rectification under vacuum etc., have the shortcomings that long flow path, high energy consumption, cause glycerin purification into
This is quite high.In addition, the species and content of these impurity, change very big in the crude glycerine of separate sources, this and biodiesel system
The post processing of the raw material, production technology and the product that are used during standby is relevant.Selected therefore, it is also desirable to be constituted according to impurity content
Crude glycerine purifying process and step are selected, for the purge process of middle and small scale, economy is very poor.
For example, Chinese invention patent CN 102952000A disclose a kind of biodiesel byproduct product refining crude glycerin technique,
The processing step such as de-taste including dilution, desalination, impurity elimination, distillation, decolouring, including using sodium oxalate complexing impurity elimination, activated carbon decolorizing
The technology such as de-taste.This method step is complicated, and unfavorable to environment using a large amount of chemical reagent.
Chinese invention patent CN 103772149A disclose a kind of method of biological diesel oil byproduct refining crude glycerin, adopt
The technique being combined with ion exchange-tube film evaporation technique, is mainly comprised the steps of：During production of biodiesel
The crude glycerine of generation is added in acidification reactor, with dilute acid for adjusting pH to faintly acid, acidification；Obtained glycerite is with dilute
Aqueous slkali adjusts pH to alkalescent, stratification；The precipitation of generation is discharged from reactor bottom, and obtained dilute glycerite is through ion
Exchange column, removes various impurity, obtains dilute solution of glycerol；Dilute solution of glycerol enters short distance tube evaporator, carries out thin layer efficient
Quick continuous evaporation concentration, obtains the glycerine of high-purity.The technique is excessively complicated, is unfavorable for large-scale industrial production.
Chinese invention patent CN 105085176A, CN 103626632A and CN 105037096A etc. also provide crude glycerine
Preparation method, such as distillation and concentration method acidification method, extraction.But these methods are similar with the above method, exist
Reactions steps are complicated, the shortcomings of technological cycle is long.
The content of the invention
The problem of existing for above-mentioned traditional crude glycerine purification process, according to an aspect of the invention, there is provided a kind of
The new method of purifying biological diesel oil byproduct crude glycerin, methods described is carried out as follows：
Crude glycerine raw material is extracted from crude glycerine material container, is noted together as charging with lower in the inert carrier gas of flowing
Enter to be filled with inert filler and assemble the separator of having heaters, control the temperature of the separator in 100-320 DEG C, separator
Throat-fed flow control is cooled down in 10-200mL/min, the outlet connection cooling device of the separator to effluent
And collect.
Preferably, the crude glycerine raw material can pass through the extraction selected from syringe pump, plunger pump, peristaltic pump, membrane pump etc.
Pump is extracted from crude glycerine material container, preferably syringe pump.The flow velocity of the crude glycerine raw material according to the volume of separator, point
Suitably adjusted from efficiency etc., for example, it can be set in 0.1-5.0mL/min, but not limited to this.
Preferably, the weight content of glycerine is more than 30% before the crude glycerine feed purification, and preferably more than 60%, more
Preferably more than 80%, more preferably more than 88%.
Preferably, the gas-liquid velocity ratio 500 of the inert carrier gas and crude glycerine raw material:1 to 10:1, preferably 500:1 to
64:1, more preferably 500:1 to 100:1.
Preferably, the one kind or its two or more combinations, flow of the inert carrier gas in nitrogen, argon gas and helium
10-200mL/min, but not limited to this can be for example set in.
Preferably, the separator can be quartz ampoule separator, glass separation, stainless steel separator.The separation
There is no particular restriction for the shape of device, can be cylindrical shape, square tube shape, the shape such as coiled pipe.
Preferably, the temperature control of the separator is 150-260 DEG C.
Preferably, the inert filler loaded in the separator is the materials such as stainless steel, ceramics, glass, but is not limited
In this；The shape of inert filler can be three square rings, Raschig ring, plug tower ring, ring spring plus agriculture ring, but not limited to this.Filler chi
Very little is 1-10mm, and preferably 3-5mm, separator internal diameter is not less than 5 with filler size multiple.Filler packing volume enters with crude glycerine
Stream speed is related, 10-50 times of feed volume generally per minute,
Preferably, the cooling device is cooled down to the effluent in separator, and the type of cooling can use water
Cold, air-cooled, organic coolant etc..
Preferably, the method according to the invention is physical separation method, and any other chemical reagent is not used.
There is provided a kind of device of purifying biological diesel oil byproduct crude glycerin, the device according to another aspect of the present invention
Including：
Crude glycerine storage facility, for storing crude glycerine；
Draw-off pump, is connected on crude glycerine storage facility, for extracting crude glycerine from crude glycerine storage facility；
Inert gas feeding mechanism, it is connected by triple valve with draw-off pump, for providing inert gas as carrier gas；
Separator, the separator is filled with inert filler, and it is connected with one end of triple valve, is provided with the outside of separator
Heater, for separating the impurity in raw material；
Cooling device, is connected with the outlet of separator, for the effluent in cooling separator.
Preferably, the inert gas feeding mechanism can further comprise gas storage cylinder and gas flowmeter.
Preferably, the heater that the separator exterior measuring is set can be electric furnace, infrared lamp, electromagnetic oven etc..
Preferably, the separator can be quartz ampoule separator, glass separation, stainless steel separator.The separation
The shape of device is not specially limited, and can be cylindrical shape, square tube shape, the shape such as coiled pipe.
Preferably, the temperature control of the separator is 150-260 DEG C.
Preferably, the inert filler loaded in the separator is the materials such as stainless steel, ceramics, glass, but is not limited
In this；The shape of inert filler can be three square rings, Raschig ring, plug tower ring, ring spring plus agriculture ring, but not limited to this.Filler chi
Very little is 1-10mm, and preferably 3-5mm, separator internal diameter is not less than 5 with filler size multiple.Filler packing volume enters with crude glycerine
Stream speed is related, 10-50 times of feed volume generally per minute,
Preferably, the cooling device can be condenser pipe, heat exchanger, forced air cooled tube etc..
Beneficial effect
For problems of the prior art, according to the purification process of the present invention, be simple and convenient to operate with step,
Without using other chemical reagent, cost is low the characteristics of.The glycerine purified using this method, is suitable as catalytic dehydration propylene
Aldehyde, the step of chlorination-saponification two prepare the raw material of the reactions such as epoxychloropropane, and the crude glycerine for being relatively free of purifying does raw material, Ke Yiti
High reaction rate, extends catalyst life.
Brief description of the drawings
The structure that Fig. 1 show the purification devices of the biomass raw glycerine provided according to an embodiment of the invention is shown
It is intended to.
Reference：
1. crude glycerine reservoir bottle；2. store bottle cap (sealing)；3. stainless steel suction strainer head；4. syringe pump；5. stainless steel three
Logical part；6. gas mass flow gauge；7. gas bomb；8. stainless steel pullover；9. quartz ampoule；10. hot plate；11. inertia is filled out
Material；12. temperature controller；13. condenser pipe；14. low-temperature cooling fluid circulating pump；15. receiving flask
Embodiment
Hereinafter, it will be described in detail the present invention.Before doing so, it should be appreciated that in this specification and appended
Claims in the term that uses should not be construed as being limited to general sense and dictionary meanings, and inventor should allowed
On the basis of the appropriate principle for defining term to carry out best interpretations, according to implication corresponding with the technical elements of the present invention and generally
Thought is explained.Therefore, description presented herein is not intended to limitation originally merely for the sake of the preferred embodiment for illustrating purpose
The scope of invention, it will thus be appreciated that without departing from the spirit and scope of the present invention, it can be obtained by it
His equivalents or improved procedure.
The problem of existing for above-mentioned traditional crude glycerine purification process, the invention provides a kind of purifying biological diesel oil by-product
The new method of crude glycerine, be simple and convenient to operate with step, without using other chemical reagent, cost is low the characteristics of.This method
General principle is being heated on 100-320 DEG C of inert filler, is removed inorganic salt impurities by evaporative crystallization, is removed by coking
Aliphatic acid (methyl esters) impurity is removed, crystallization and coking occur on inert filler, can pass through cleaning and roasting regeneration.
Technical scheme is described in detail below according to the specific embodiment of the present invention.
Crude glycerine is by syringe pump, in the case where the inert carrier gas of flowing is adjoint, by the pipeline of connection, such as stainless steel tube,
The separator for having loaded inert filler, such as quartz ampoule are flowed through in injection together, and quartz ampoule and inert filler are heated, and pass through control
Temperature processed and flow velocity evaporative crystallization remove inorganic salt impurities, while coking removes aliphatic acid (methyl esters) impurity, realize to main miscellaneous
The separation in situ of matter, is then cooled down, and collected with receiving flask using cooling circulation liquid to effluent.The sample of collection is used
Gas chromatography and weight method analysis glycerine and inorganic salt content.
The gas-liquid velocity ratio 500 of wherein described inert carrier gas and crude glycerine raw material:1 to 10:1, preferably 500:1 to 64:
1, preferably 500:1 to 100:1.When ratio is too low, i.e., the amount of crude glycerine raw material is big, and glycerine coking can be caused to increase, and increases sweet
Oil loss；Ratio is too high, i.e. the amount of crude glycerine raw material is too small, and glycerine partial pressure can be caused too low, and purity declines.
The temperature control of the separator is 100-320 DEG C, preferably 150-260 DEG C.Because the boiling point of water is 100 DEG C,
Inorganic salts are largely dissolved in the water, and water rear salt is separated out, therefore not preferably less than 100 DEG C of temperature.Glycerine boiling point is 290
DEG C, the amount of the too high increase glycerine charing of temperature causes glycerine to lose.Therefore the temperature of separator is suitably controlled as 100-
320 DEG C, preferably 150-260 DEG C, be optimal conditions.
The inert filler loaded in the separator is the material such as stainless steel, ceramics, glass, but not limited to this；It is lazy
Property filler shape can be three square rings, Raschig ring, plug tower ring, ring spring plus agriculture ring, but not limited to this.Filler size is 1-
10mm, preferably 3-5mm, separator internal diameter are not less than 5 with filler size multiple.Filler packing volume and crude glycerine feed flow rate
Correlation, 10-50 times of feed volume generally per minute, such as glycerine feed 2mL/min, then filler packing volume is 20-
100mL.When packing volume is too small, glycerine separative efficiency is reduced；Excessive then increase filler consumption, or cause glycerine to carbonize.It is described
Inert filler can be commercially available material, be filled into using free accumulation in separator.
To realize above-mentioned purge process, it is used for what crude glycerine was purified there is provided a kind of according to an embodiment of the invention
Device, including：Crude glycerine storage facility, for storing crude glycerine；Draw-off pump, is connected on crude glycerine storage facility, for from
Crude glycerine is extracted in crude glycerine storage facility；Inert gas feeding mechanism, it is connected by triple valve with draw-off pump, for providing
Inert gas is used as carrier gas；Separator, the separator is filled with inert filler, and it is connected with one end of triple valve, separator
Outside sets having heaters, for separating the impurity in raw material；Cooling device, is connected with the outlet of separator, divides for cooling down
From the effluent in device.
The structure that Fig. 1 show the purification devices of the biomass raw glycerine provided according to an embodiment of the invention is shown
It is intended to.
Referring to Fig. 1, a kind of purification devices of crude glycerine, including lid glycerine reservoir bottle 1 are stored the upper end perforate of bottle cover 2, opened
The stainless steel tube of insertion one at hole, one end connection one suction strainer first 3 of the stainless steel tube is simultaneously reached below reservoir bottle liquid level, the other end
It is connected with the injection port of syringe pump 4.Syringe pump outlet is connected with stainless-steel pipe one end, the other end of the stainless-steel pipe and one
Stainless steel tee 5 is connected.Connected at Stainless steel tee mouth of pipe using one end of stainless-steel pipe and a gas mass flow gauge 6
Connect, the other end of gas flowmeter is connected using stainless-steel pipe with storing the gas cylinder 7 of inert gas.The 3rd of Stainless steel tee
Individual mouth by stainless-steel pipe export and be connected with a stainless steel screw thread pullover 8, stainless steel screw thread pullover from top to bottom according to nut,
Rubber ring, the order of pullover are sequentially sleeved in the top of quartz ampoule 9 that bottom carries porous barrier, and the quartz ampoule is connected with pullover
The inert filler of certain altitude is filled before, and the quartz ampoule lower end is connected with the entrance of a straight cold finger 13, and condenser pipe is external
Low-temperature cooling fluid circulating pump 14, the lower end outlet of condenser pipe is connected 15 with a receiving flask.A thermoelectricity is set in open-close type heating furnace 10
Occasionally and connect a temperature of silicon controlled rectifier controller 12 outside.
The two ends of stainless steel screw thread pullover 8 are provided with nipple, convenient to be threadedly coupled with stainless-steel pipe, described
Stainless steel screw thread pullover 8 can be pinned quartz ampoule by screw thread pullover, and can be with disassembled and assembled freely, convenient cleaning impurity.
The inert filler, such as square ring of stainless steel three, can be recycled after roasting, washing, drying.
The purification step includes, and opening low-temperature cooling fluid circulating pump makes coolant be down to 4 DEG C, connects gas circuit and keeps carrier gas
Constant flow rate is 10-200mL/min, and check device air-tightness, heating furnace is warming up to required cleansing temp, treats temperature stabilization, beats
Drive piston pump, sample introduction flow velocity 0.1-5.0mL/min.
Following examples are enumerated only as the example of embodiment of the present invention, do not constitute any limit to the present invention
System, it will be appreciated by those skilled in the art that the modification in the range of without departing from the essence of the present invention and design each falls within the present invention
Protection domain.Unless stated otherwise, the reagent and instrument used in following examples is commercially available product.
Embodiment 1
Storage bottle adds crude glycerine, and (Qingdao Institute of Biomass Energy and Bioprocess Technology of the Chinese Academy of Sciences provides, Pingdu biodiesel pilot scale line pair
Product, glycerin weight content 88.7wt%), nitrogen carrier gas flow velocity 100mL/min, syringe pump sample introduction flow velocity 0.5mL/min are porous
3mm stainless steel plug tower ring fillers are added in dividing plate quartz ampoule (separator, internal diameter 4cm, length 40cm), packing volume 30mL is opened
The temperature of box-like heating furnace is set as 150 DEG C, and sample is cooled down and collected using circulating cooling water pump and glass cold traps.
After purifying 5 hours, using gas Chromatographic Determination, sample glycerin weight content is 90.3wt% after purification.Nothing is determined using weight method
Machine salt content is reduced to 3.0% by 4.5%.
Embodiment 2
Storage bottle adds crude glycerine, and (Qingdao Institute of Biomass Energy and Bioprocess Technology of the Chinese Academy of Sciences provides, Pingdu biodiesel pilot scale line pair
Product, glycerin weight content 88.7wt%), flow rate of carrier gas 100mL/min, syringe pump sample introduction flow velocity 1.0mL/min, porous barrier
5mm stainless steel triangle ring fillers, packing volume 40mL, open-close type are added in quartz ampoule (separator, internal diameter 4cm, length 40cm)
The temperature of heating furnace is set as 250 DEG C, and sample is cooled down and collected using circulating water pump and glass cold traps.Purifying 12
After hour, using gas Chromatographic Determination, sample glycerin weight content is that (partial glycerol charing causes concentration to drop to 85.3wt% after purification
It is low).Inorganic salt content is determined using weight method and is reduced to 2.3% by 4.5%.
Embodiment 3
Storage bottle adds crude glycerine, and (Qingdao Institute of Biomass Energy and Bioprocess Technology of the Chinese Academy of Sciences provides, Pingdu biodiesel pilot scale line pair
Product, glycerin weight content 88.7wt%), flow rate of carrier gas 100mL/min, syringe pump sample introduction flow velocity 0.5mL/min, porous barrier
2mm stainless steel Raschig ring fillers are added in quartz ampoule (separator, internal diameter 4cm, length 40cm), packing volume is 30mL, folding
The temperature of formula heating furnace is set as 220 DEG C, and sample is cooled down and collected using circulating cooling water pump and glass cold traps.It is pure
After changing 10 hours, using gas Chromatographic Determination, sample glycerol content is that (partial glycerol charing causes concentration to drop to 86.2wt% after purification
It is low).Inorganic salt content is determined using weight method and is reduced to 2.9% by 4.5%.
Embodiment 4
Storage bottle adds crude glycerine, and (Qingdao Institute of Biomass Energy and Bioprocess Technology of the Chinese Academy of Sciences provides, Pingdu biodiesel pilot scale line pair
Product, glycerin weight content 88.7wt%), flow rate of carrier gas 50mL/min, syringe pump sample introduction flow velocity 0.1mL/min, porous barrier
5mm stainless steel spring ring fillers are added in quartz ampoule (separator, internal diameter 4cm, length 40cm), packing volume is 10mL, folding
The temperature of formula heating furnace is set as 250 DEG C, and sample is cooled down and collected using circulating cooling water pump and glass cold traps.It is pure
After changing 15 hours, using gas Chromatographic Determination, sample glycerol content is 90.1wt% after purification.Inorganic salts are determined using weight method
Content is reduced to 2.4% by 4.5%.
Embodiment 5
Storage bottle adds crude glycerine, and (Qingdao Institute of Biomass Energy and Bioprocess Technology of the Chinese Academy of Sciences provides, Pingdu biodiesel pilot scale line pair
Product, glycerin weight content 88.7wt%), flow rate of carrier gas 160mL/min, syringe pump sample introduction flow velocity 2.5mL/min, porous barrier
3mm stainless steel triangle ring fillers are added in quartz ampoule (separator, internal diameter 4cm, length 40cm), packing volume is 40mL, folding
The temperature of formula heating furnace is set as 260 DEG C, and sample is cooled down and collected using circulating cooling water pump and glass cold traps.It is pure
After changing 13 hours, using gas Chromatographic Determination, glycerol content is 91.8wt% after purification.Inorganic salt content is determined using weight method
2.4% is reduced to by 4.5%.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of method of purifying biological diesel oil byproduct crude glycerin, methods described is carried out as follows：
Crude glycerine raw material is extracted from crude glycerine material container, is filled out in the inert carrier gas of flowing with lower as charging together injection
Fill inert filler and assembled the separator of having heaters, control the temperature of the separator in 100-320 DEG C, separator charging
The control of mouth feed flow rate is cooled down and received to effluent in 10-200mL/min, the outlet connection cooling device of the separator
Collection.
2. the method for purifying biological diesel oil byproduct crude glycerin according to claim 1, it is characterised in that the crude glycerine is former
Material can be extracted by the draw-off pump selected from syringe pump, plunger pump, peristaltic pump, membrane pump etc. from crude glycerine material container, excellent
Elect syringe pump as；The flow velocity of the crude glycerine raw material is 0.1-5.0mL/min；The weight of glycerine before the crude glycerine feed purification
Content is more than 30%, preferably more than 60%, more preferably more than 80%, more preferably more than 88%.
3. the method for purifying biological diesel oil byproduct crude glycerin according to claim 1, it is characterised in that the inert carrier gas
With the gas-liquid velocity ratio 500 of crude glycerine raw material:1 to 10:1, preferably 500:1 to 64:1, more preferably 500:1 to 100:1；It is excellent
Selection of land, the one kind or its two or more combination of the inert carrier gas in nitrogen, argon gas and helium, flow is 10-
200mL/min。
4. the method for purifying biological diesel oil byproduct crude glycerin according to claim 1, it is characterised in that the separator is
Quartz ampoule separator, glass separation, stainless steel separator, the shape of the separator can be cylindrical shape, square tube shape, snakelike
The shapes such as pipe；The temperature control of the separator is 150-260 DEG C.
5. the method for purifying biological diesel oil byproduct crude glycerin according to claim 1, it is characterised in that in the separator
The inert filler loaded is the materials such as stainless steel, ceramics, glass；The shape of inert filler can be three square rings, Raschig ring,
Fill in tower ring, ring spring plus agriculture ring, but not limited to this；Filler size is 1-10mm, preferably 3-5mm, separator internal diameter and filler
Size multiple is not less than 5；Filler packing volume is 10-50 times of feed volume per minute.
6. the method for purifying biological diesel oil byproduct crude glycerin according to claim 1, it is characterised in that the cooling device
Effluent in separator is cooled down, the type of cooling can be using water cooling, air-cooled, organic coolant etc..
7. the method for purifying biological diesel oil byproduct crude glycerin according to claim 1, it is characterised in that methods described is thing
Separation method is managed, any other chemical reagent is not used.
8. a kind of device of purifying biological diesel oil byproduct crude glycerin, the device includes：
Crude glycerine storage facility, for storing crude glycerine；
Draw-off pump, is connected on crude glycerine storage facility, for extracting crude glycerine from crude glycerine storage facility；
Inert gas feeding mechanism, it is connected by triple valve with draw-off pump, for providing inert gas as carrier gas；
Separator, the separator is filled with inert filler, and it is connected with one end of triple valve, and heating is provided with the outside of separator
Device, for separating the impurity in raw material；
Cooling device, is connected with the outlet of separator, for the effluent in cooling separator.
9. the device of purifying biological diesel oil byproduct crude glycerin according to claim 8, it is characterised in that preferably, described
Inert gas feeding mechanism can further comprise gas storage cylinder and gas flowmeter；Preferably, the separator exterior measuring is set
Heater is electric furnace, infrared lamp, electromagnetic oven etc.；Preferably, the separator can separate for quartz ampoule separator, glass
Device, stainless steel separator, the shape of the separator can be cylindrical shape, square tube shape, the shape such as coiled pipe；Preferably, it is described
The temperature control of separator is 150-260 DEG C；Preferably, the inert filler loaded in the separator is stainless steel, pottery
The materials such as porcelain, glass, the shape of inert filler can be three square rings, Raschig ring, plug tower ring, ring spring plus agriculture ring；Filler size
For 1-10mm, preferably 3-5mm, separator internal diameter is not less than 5 with filler size multiple, and filler packing volume is charging per minute
10-50 times of volume；Preferably, the cooling device can be condenser pipe, heat exchanger, forced air cooled tube etc..
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| CN108947769A (en) * | 2018-08-15 | 2018-12-07 | 鄂尔多斯市新杭能源有限公司 | Ethylene glycol preparation facilities |
| WO2023215723A1 (en) * | 2022-05-01 | 2023-11-09 | NEXT-ChemX Corporation | Membrane-based treatment of biodiesel compositions to remove impurities |
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