CN109796310A - A method of initial gross separation being carried out to F- T synthesis water using next door rectifying column - Google Patents
A method of initial gross separation being carried out to F- T synthesis water using next door rectifying column Download PDFInfo
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Abstract
The present invention is a kind of method for carrying out initial gross separation to F- T synthesis water using next door rectifying column, this method includes using the Fischer-Tropsch Synthesis production produced synthetic water of liquid fuel as raw material, lock out operation is carried out to synthetic water raw material using next door rectifying column, synthetic water raw material is added from the prefractionation side feed inlet of next door rectifying column, tower top obtains the mixture of the low boiling point oxygen-bearing organic matter containing minor amount of water, tower bottom obtains the dilute acid solution based on high boiling solvent lignin amine, and next door tower king-tower side side take-off obtains the oxygen-containing organic mixture based on the mixed alcohol containing a small amount of water；The operating condition of the next door rectifying column are as follows: 30~80 DEG C of tower top, 70~160 DEG C of tower bottom, 50~130 DEG C of side line, reflux ratio 5~35, gas phase distribution ratio 0.5~20, liquid phase distribution ratio 0.1~2.This method makes full use of the energy saving of next door tower distillation technology in the initial gross separation processing stage of F- T synthesis water, substantially reduces the process energy consumption of F- T synthesis water process.
Description
Technical field
The present invention relates to a kind of sides for being separated from the water the oxygen-bearing organic matters such as aldehydes, ketone, esters, alcohols and acids
Method more particularly to a kind of method that initial gross separation is carried out to F- T synthesis water using next door rectifying column.
Background technique
With the liquid fuels demand such as petroleum increase considerably and petroleum resources can use storage level continuous reduction,
By the method for the short liquid fuel of the raw materials such as coal, natural gas, biomass production increasingly by the great attention of people.Coal,
It is exactly Fischer-Tropsch Synthesis that the indirect liquefaction method of the fuel such as natural gas, biomass is most representative.This method is in iron-based, cobalt
It, will be as caused by the raw materials such as coal with carbon monoxide (CO) and hydrogen (H under the conditions of base or iron cobalt-base catalyst are existing2) based on
Synthesis gas, the technique of HC fuel is catalyzed and synthesized under conditions of certain temperature and pressure.Indirect liquefaction technology is to raw material matter
That measures is with strong applicability, and institute's oil-producing quality is high and product category is numerous.
Fischer-Tropsch Synthesis oil-producing technique is with carbon monoxide (CO) and hydrogen (H2) based on synthesis gas be raw material, it is iron-based,
Cobalt-based or the effect of iron cobalt-base catalyst it is lower generate hydro carbons oil product, while generating alcohols, aldehydes, ketone, esters, acids etc. oxygen-containing have
Machine object and a large amount of water.React generate water phase and generation principal product hydro carbons oil product can be very easy separation, but due to
The oxygen-bearing organic matters such as alcohols, organic acid in water phase have certain solubility, so in water phase have a certain amount of alcohols,
The oxygen-bearing organic matters such as aldehydes, ketone, esters, acids, and obtained water phase is commonly referred to as F- T synthesis water.Due to fischer tropsch process liquefaction
A large amount of synthetic water can be generated in the process, produced megaton oil product per year, will be generated megaton synthetic water, and in synthetic water
10,000 tons oxygen-bearing organic matter will be carried, if by its direct emission, it is clear that be a kind of uneconomic way, while direct emission
It will pollute the environment, serious non-compliance environmental requirement.
Due to F- T synthesis water (including high temperature, medium temperature, the Low Temperature Fischer Tropsch synthesis generated during Fischer-Tropsch Synthesis liquefaction
Water) in will dissolve the oxygen-bearing organic matters such as tens kinds of aldehydes, ketone, esters, alcohols and acids, this partial organic substances makes F- T synthesis
Water becomes a kind of extremely complex system because this system substance classes are complicated, boiling range is wide, concentration is low, and there are a variety of
Azeotropic, association phenomenon between component (have nearly tens kinds of oxygen-bearing organic matters, their boiling point is from 20 DEG C to 206 DEG C in synthetic water
Be distributed and be completely embedded, their total concentration about 1%-15% in synthetic water, and between many kinds of substance there are azeotropic and
Association phenomenon, this makes them be difficult to separate) therefore use oxygen-containing organic in general wastewater treatment method and its water containing organic matter
The separation and recovery method of object handles industrial F- T synthesis water, and organic matter that is costly, being difficult to meet the requirement of environmental protection, recycling will be present
The problems such as product yield is low.Therefore, it finds a kind of cost-effective extracting method and separation and recovery right and wrong is carried out to F- T synthesis water
Often it is necessary to.
Due to the features such as F- T synthesis aqueous systems substance classes are complicated, concentration is low, using conventional rectification tower technology to Fischer-Tropsch
Synthetic water carry out separation and recovery there are thermodynamic efficiencies it is low, component air-teturning mixed phenomenon is serious, energy consumption is high, equipment investment is big the problems such as.
It, need to using conventional rectification tower technology for the purpose that oxygen-bearing organic matter in tentatively recycling Fischer-Tropsch water and methanol, ethyl alcohol are divided
Two conventional rectification towers and associated satellite establishing, such as the Chinese patent of Publication No. CN 101244983A is wanted to disclose one kind
The separation and recovery method of organic matter in low-temperature Fischer-Tropsch synthesizing reaction, this method are after F- T synthesis crystal evaporate is removed organic acid
Carry out methanol, ethyl alcohol segmentation conventional two tower rectification process F- T synthesis water technique, the equipment investment of the technique is big, energy consumption
It is high.In addition, being separated and recovered for F- T synthesis water, in Patent No. ZL 2008100329263 and ZL2008100432527
State's patent individually discloses a kind of method flow for separating and recovering F- T synthesis water, and the two has all used next door tower distillation technology.
But the two is all first to pre-process F- T synthesis water by a conventional rectification tower, is then 50~120 DEG C by boiling range
Fraction by next door tower carry out rectifying separation.Since F- T synthesis water is usually very huge, using distillation technology pair
F- T synthesis water is separated and recovered, and process energy consumption will concentrate mainly on oxygen-bearing organic matter and the initial gross separation stage of water is (first
Step separation phase refers to: tentatively recycling oxygen-bearing organic matter in synthetic water, realization organic matter separates as far as possible with water, and can
These organic matters are once divided, are laid the foundation for the subdivision of subsequent organic matter product), therefore find more advanced rectifying skill
Art is significantly come the energy consumption for reducing this stage.
Summary of the invention
The object of the invention is in order to solve existing for industrial F- T synthesis water direct emission it is uneconomical, not environmentally etc. ask
Topic provides a kind of low energy consumption, efficient F- T synthesis method for treating water.This method is at the initial gross separation of F- T synthesis water
The reason stage makes full use of the energy saving of next door tower distillation technology, substantially reduces the process energy consumption of F- T synthesis water process.
The purpose of the present invention can be achieved through the following technical solutions:
A method of initial gross separation being carried out to F- T synthesis water using next door rectifying column, which is characterized in that this method packet
It includes using synthetic water caused by Fischer-Tropsch Synthesis production liquid fuel as raw material, synthetic water raw material is carried out using next door rectifying column
Lock out operation, described next door the top of the distillation column are equipped with condenser, and are equipped with reflux and extraction circuit, can be carried out overhead product and adopt
Out and adjustment reflux ratio；The next door rectifying tower bottom is equipped with reboiler, can provide heat for entire distillation system liquid evaporation
Amount；Middle section is equipped with vertical partition plate in the next door rectifying tower body, and partition two sides are respectively prefractionation side and king-tower side；Into
Flitch is located at prefractionation side, and side take-off mouth is located in partition king-tower side；
Synthetic water raw material is added from the prefractionation side feed inlet of next door rectifying column, and tower top obtains the low boiling point containing minor amount of water
The mixture of oxygen-bearing organic matter, tower bottom obtain the dilute acid solution based on high boiling solvent lignin amine, next door tower king-tower side side take-off
Obtain the oxygen-containing organic mixture based on the mixed alcohol containing a small amount of water；
The operating condition of the next door rectifying column are as follows: 30~80 DEG C of tower top, 70~160 DEG C of tower bottom, 50~130 DEG C of side line,
Reflux ratio 5~35, gas phase distribution ratio 0.5~20, liquid phase distribution ratio 0.1~2；
Described next door the top of the distillation column product separates Con trolling index are as follows: aqueous mass percent is 0%~2%, containing sour matter
It measures score and is less than 1PPM；Next door rectifying tower bottom Separation Indexes are as follows: mix alcohol mass percent less than 0.1%.
The beneficial effects of the present invention are:
Separation and recovery processing is carried out to F- T synthesis water using the present invention, can by aldehydes contained therein, ketone, esters,
The oxygen-bearing organic matters such as alcohols, acids carry out preliminary separation and recovery, solve F- T synthesis water direct emission at low cost and are brought
It is uneconomical, not environmentally the problems such as；Obtained oxygen-bearing organic matter product is subjected to later separation purification, solid combustion will be greatly increased
Feed liquidization product category produced further obtains Fischer-Tropsch water and separates and recovers brought economic benefit.And treated close
Cheng Shui is recycled to other workshop sections and is recycled, and greatlys save water resource.
The present invention recycles the initial gross separation that next door tower distillation technology is applied to F- T synthesis water, with traditional conventional rectification tower
Sequence, which is compared, to be expected to reduce 30% or so energy consumption and 20% or so equipment investment.The next door tower distillation technology makes
With a tower body, a reboiler, a condenser, realizes and depickling dehydration and methanol, ethyl alcohol segmentation are carried out to F- T synthesis water
Purpose, a tower body, a reboiler, a condenser and pipeline and other can be saved compared to conventional rectification tower sequence
Auxiliary device, the technology greatly reduce relevant device investment.Entire next door tower distillation process is compared with conventional rectification tower sequence
Component air-teturning mixed phenomenon reduces, thermodynamic efficiency is improved, and process energy consumption will be greatly reduced.And it is directed to F- T synthesis
The very huge feature for the treatment of capacity needed for water is carried out separating and recovering its process energy consumption to it using distillation technology and is concentrated mainly on just
Separation phase is walked, therefore it is very significant that the next door tower distillation technology with superior energy saving, which is applied to this stage,
's.F- T synthesis water raw material is divided into three strands of product streams by the next door tower distillation technology, and it is big that tower top obtains relative volatility
In or equal to methanol oxygen-bearing organic matter light component mixture, this portioned product can do fuel or solvent, can also carry out subsequent
Product separating-purifying obtains higher value product；It is oxygen-containing organic less than or equal to ethyl alcohol that intermediate side line obtains relative volatility
There are a variety of high value C2~C10 to mix alkoxide component, can carry out later separation purification, obtain for object heavy constituent mixture, this portioned product
Obtain higher economic benefit；Tower bottom obtains the dilute acid solution containing high boiling solvent lignin amines such as acetic acid, propionic acid, butyric acid, valeric acids, can be into
The subsequent organic acid recovery of row, is also recycled to synthesis gas preparatory phase, the moisture for preparing slurry is rolled for solid fuels such as coals
Supplement.
Described with regard to case (1) in embodiment 1, the present invention is recycled for the initial gross separation of F- T synthesis water, in overhead stream
The mass fraction of ethyl alcohol is 16%, the mass fraction of water is 0.6%, and the mass fraction of methanol is 0.3%, water in side-stream
Mass fraction is 33.4%, and the weight fraction of water is 99.5% in tower base stream, which has absolutely proved that the present invention can be real
The purpose that depickling, dehydration and methanol, ethyl alcohol are divided in existing F- T synthesis water initial gross separation removal process is point of subsequent product
It is convenient and possible to provide from purification.
Detailed description of the invention
Fig. 1 is the method and process flow chart that the present invention carries out initial gross separation using next door rectifying column to F- T synthesis water.
Specific embodiment
Below in conjunction with concrete case, invention is further explained.
The method that the present invention carries out initial gross separation to F- T synthesis water using next door rectifying column, this method includes following step
It is rapid:
Using the produced synthetic water of Fischer-Tropsch Synthesis liquefaction as raw material, using energy-efficient next door tower rectifying column to synthetic water
Raw material carries out lock out operation, and described next door the top of the distillation column is equipped with condenser, and is equipped with reflux and extraction circuit, can carry out tower
Push up product extraction and adjustment reflux ratio；The next door rectifying tower bottom is equipped with reboiler, can steam for entire distillation system liquid
Hair provides heat；Middle section is equipped with vertical partition plate in the next door rectifying tower body, and space in the tower of partition two sides is divided into
The abundant thermal coupling effect inside a tower body is realized in prefractionation side and king-tower side；
Synthetic water raw material is added from the prefractionation side feed inlet of next door rectifying column, controls temperature, pressure, reflux ratio, gas phase
Distribution ratio (the pre- side Fen Ta: king-tower side), liquid phase distribution ratio (the pre- side Fen Ta: king-tower side) carry out distillation operation, and tower top is contained
Acetaldehyde, acetone, ethyl acetate, methanol, a small amount of ethyl alcohol, propionic aldehyde, methyl acetate, n-butanal, butanone, the 2 pentanone of minor amount of water etc. are low
The mixture of boiling point oxygen-bearing organic matter, tower bottom are obtained containing in acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, ethylene glycol, 1.4- fourth
Dilute acid solution based on the high boiling solvent lignin amines such as ester, next door tower king-tower side side take-off obtain containing a small amount of water with ethyl alcohol,
Oxygen-containing organic mixture based on the mixed alcohol such as propyl alcohol, butanol, amylalcohol, Trace Methanol, hexanol, enanthol, 2 pentanone, methyl-n-butyl ketone.
Total number of theoretical plate of the next door rectifying column including condenser and reboiler is 40~120, be located at vertically every
The 1/7~3/7 of the total number of theoretical plate of number of theoretical plate Zhan of the public rectifying section part (including condenser) on plate top, be located at vertically every
The number of theoretical plate of the public stripping section part (including reboiler) of plate lower part is the 1/7~2/7 of total number of theoretical plate；Feedboard is located at
Prefractionation side, the number of theoretical plate of feedboard position be vertical partition plate number of theoretical plate 1/6~3/4 (from partition down
Number), side take-off mouth is located in partition king-tower side, and the number of theoretical plate of side take-off position is the 1/4 of vertical partition plate number of theoretical plate
~3/4 (being counted down from partition).
The operating condition of the next door rectifying column are as follows: 30~80 DEG C of tower top, 70~160 DEG C of tower bottom, 50~130 DEG C of side line,
Reflux ratio 5~35, gas phase distribution ratio 0.5~20, liquid phase distribution ratio 0.1~2.
Described next door the top of the distillation column product separates Con trolling index are as follows: aqueous mass percent is 0%~2%, containing sour matter
It measures score and is less than 1PPM；Next door rectifying tower bottom Separation Indexes are as follows: mix alcohol mass percent less than 0.1%.
In the synthetic water raw material (including high temperature, medium temperature, Low Temperature Fischer Tropsch synthetic water) containing mass percent be 1%~
The oxygen-bearing organic matters such as 15% aldehyde, ketone, alcohol, ester and acid, this type organic refer mainly to C1~C7 aldehyde, ketone, ester, acid and C1~
The oxygen-bearing organic matters such as the oxygen-bearing organic matters such as C10 alcohol, or even the aldehyde including more high carbon chain, ketone, ester, acid and alcohol.
The next door rectifying column is equipped with king-tower side side take-off mouth, can carry out intermediate products side take-off, realizes with first
Alcohol, ethyl alcohol are the segmentation of weight key component, and the product distribution of tower top and tower bottom can be adjusted.
It is mixed more than or equal to the oxygen-bearing organic matter light component of methanol that described next door the top of the distillation column obtains relative volatility
Object is closed, this portioned product can do fuel or solvent, can also carry out subsequent product separating-purifying, obtain higher value product.
Side line obtains oxygen-bearing organic matter recombination of the relative volatility less than or equal to ethyl alcohol among the next door rectifying column
Divide mixture, there are this portioned product a variety of high value C2~C10 to mix alkoxide component, can carry out later separation purification, obtain higher
Economic benefit.
The next door rectifying tower bottom is obtained containing based on the high boiling solvent lignin amines such as acetic acid, propionic acid, butyric acid, valeric acid
Dilute acid solution can carry out subsequent organic acid recovery, also be recycled to synthesis gas preparatory phase, roll for solid fuels such as coals
Prepare the moisture supplement of slurry.
The method of the present invention focuses on the preliminary processing stage that next door tower distillation technology is run to Fischer-Tropsch water separation and recovery,
Make full use of next door tower distillation technology compared with conventional traditional rectifying tower technology energy saving outstanding, to realize the recovery processing of Fischer-Tropsch water
Low energy consumption, high efficiency.Using next door tower distillation technology, high efficiency, low energy can be carried out to oxygen-bearing organic matter in F- T synthesis water
The initial gross separation recycling of consumption ground, provides condition for the further separating-purifying of subsequent oxygen-bearing organic matter, and efficiently solve industry
The wasting of resources and problem of environmental pollution caused by F- T synthesis water direct emission.
The method of the present invention can be suitably used for high, medium and low temperature Fischer-Tropsch water initial gross separation and recycle, the specific structure of next door rectifying column,
In actual industrial production, for specific object system, particular separation requirement, reality is adjusted in the range of operating parameters of the application
Now optimize recovering effect.
Embodiment 1
A kind of method that initial gross separation is carried out to Low Temperature Fischer Tropsch synthetic water using next door rectifying column of the present embodiment, this method packet
It includes using the produced synthetic water of Low Temperature Fischer Tropsch synthetic method liquefaction as raw material, using energy-efficient next door tower rectifier unit to synthetic water
Raw material carries out lock out operation, and described next door the top of the distillation column is equipped with condenser, and is equipped with reflux and extraction circuit, can carry out tower
Push up product extraction and adjustment reflux ratio；The next door rectifying tower bottom is equipped with reboiler, can steam for entire distillation system liquid
Hair provides heat；In the next door rectifying tower body middle section be equipped with vertical partition plate, by partition two sides be divided into prefractionation side and
The abundant thermal coupling effect inside a tower body is realized in king-tower side；
Synthetic water raw material from the prefractionation side feed inlet of next door rectifying column be added, temperature appropriate, pressure, reflux ratio,
Gas phase distribution ratio (the pre- side Fen Ta: king-tower side), liquid phase distribution ratio carry out distillation operation under conditions of (the pre- side Fen Ta: king-tower side),
Tower top can obtain the mixed of the low boiling points oxygen-bearing organic matters such as the acetaldehyde containing minor amount of water, acetone, ethyl acetate, methanol, a small amount of ethyl alcohol
Object is closed, tower bottom is obtained containing the dilute acid solution based on the high boiling solvent lignin amines such as acetic acid, propionic acid, butyric acid, valeric acid, next door tower master
Tower side side take-off obtains the oxygen-containing organic mixture based on the mixed alcohol such as ethyl alcohol, propyl alcohol, butanol, amylalcohol containing a small amount of water；
In the present embodiment, the structural parameters of next door rectifying column are as follows: total number of theoretical plate (including reboiler and condenser) is 69,
There are 26 pieces of theoretical plates on the upside of vertical partition plate, there are 11 pieces of theoretical plates on the downside of partition, entire divider height is 32 pieces of theoretical plates, feed position
It sets in prefractionation side from partition the 7th piece of theoretical plate of number from top to bottom, side take-off position is counted in king-tower side from partition from top to bottom
17th piece of theoretical plate.
The Low Temperature Fischer Tropsch synthetic water raw material composition is as follows:
Raw material composition
(1) when control next door rectifier column reflux ratio is 25.6, gas phase distribution ratio is 4.54, liquid phase distribution ratio is 0.72, tower
When top temperature is 61.60 DEG C, side take-off temperature is 82.94 DEG C, column bottom temperature is 99.99 DEG C, available following separation knot
Fruit:
Separating resulting
(2) when control next door rectifier column reflux ratio is 18, gas phase distribution ratio is 12.32, liquid phase distribution ratio is 1.21, tower top
When temperature is 63.7 DEG C, side take-off temperature is 83.05 DEG C, column bottom temperature is 99.99 DEG C, available following separating resulting:
Separating resulting
(3) when control next door rectifier column reflux ratio is 20, gas phase distribution ratio is 8.3, liquid phase distribution ratio is 0.54, tower top temperature
When degree is 62.77 DEG C, side take-off temperature is 82.78 DEG C, column bottom temperature is 99.99 DEG C, available following separating resulting:
Separating resulting
Embodiment 2
A kind of method that initial gross separation is carried out to high temperature fischer-tropsch synthetic water using next door rectifying column of the present embodiment, the processing side
Method technique is same as Example 1；Total number of theoretical plate is 60, has 25 pieces of theoretical plates on the upside of partition, has 9 pieces of theoretical plates on the downside of partition,
Entire divider height has 26 pieces of theoretical plates, and feed entrance point is adopted in prefractionation side (counting down from partition) the 6th piece of theoretical plate, side line
Out position is in king-tower side (counting down from partition) the 15th piece of theoretical plate.
The high temperature fischer-tropsch synthetic water raw material composition is as follows:
Raw material composition
(1) when control next door rectifier column reflux ratio is 30, gas phase distribution ratio is 1.51, liquid phase distribution ratio is 0.46, tower top
When temperature is 43.37 DEG C, side take-off temperature is 81.41 DEG C, column bottom temperature is 99.94 DEG C, available following separating resulting:
Separating resulting
(2) when control next door rectifier column reflux ratio is 28, gas phase distribution ratio is 1.18, liquid phase distribution ratio is 0.40, tower top
When temperature is 44.30 DEG C, side take-off temperature is 81.05 DEG C, column bottom temperature is 99.94 DEG C, available following separating resulting:
Separating resulting
(3) when control next door rectifier column reflux ratio is 35, gas phase distribution ratio is 0.96, liquid phase distribution ratio is 0.29, tower top
When temperature is 47.88 DEG C, side take-off temperature is 81.72 DEG C, column bottom temperature is 99.94 DEG C, available following separating resulting:
Separating resulting
The present invention recycles the initial gross separation that next door tower distillation technology is applied to F- T synthesis water, and above-described embodiment is sufficiently said
It is illustrated for F- T synthesis water caused by different operating conditions, the method for the present invention can effectively realize F- T synthesis water and tentatively locate
The purpose that depickling, dehydration and methanol, ethyl alcohol are divided during reason.This method is applied widely, operation controllability is strong, uses
Next door tower distillation technology can greatly reduce equipment investment and energy consumption compared with traditional rectifying column sequence.
The present invention does not address place and is suitable for the prior art.
Claims (3)
1. a kind of method for carrying out initial gross separation to F- T synthesis water using next door rectifying column, which is characterized in that this method includes
Using the Fischer-Tropsch Synthesis production produced synthetic water of liquid fuel as raw material, synthetic water raw material is separated using next door rectifying column
Operation, described next door the top of the distillation column be equipped with condenser, and be equipped with reflux with extraction circuit, can be carried out overhead product extraction and
Adjust reflux ratio；The next door rectifying tower bottom is equipped with reboiler, can provide heat for entire distillation system liquid evaporation；Institute
It states middle section in the rectifying tower body of next door and is equipped with vertical partition plate, partition two sides are respectively prefractionation side and king-tower side；Feedboard
Positioned at prefractionation side, side take-off mouth is located in partition king-tower side；
Synthetic water raw material is added from the prefractionation side feed inlet of next door rectifying column, and it is oxygen-containing that tower top obtains the low boiling point containing minor amount of water
The mixture of organic matter, tower bottom obtain the dilute acid solution based on high boiling solvent lignin amine, and next door tower king-tower side side take-off obtains
Oxygen-containing organic mixture based on mixed alcohol containing a small amount of water；
The operating condition of the next door rectifying column are as follows: 30~80 DEG C of tower top, 70~160 DEG C of tower bottom, 50~130 DEG C of side line, reflux
Than 5~35, gas phase distribution ratio 0.5~20, liquid phase distribution ratio 0.1~2；
Described next door the top of the distillation column product separates Con trolling index are as follows: aqueous mass percent is 0%~2%, contains acid mass fraction
Less than 1PPM；Next door rectifying tower bottom Separation Indexes are as follows: mix alcohol mass percent less than 0.1%.
2. a kind of method that initial gross separation is carried out to F- T synthesis water using next door rectifying column according to claim 1,
Be characterized in that, total number of theoretical plate of the next door rectifying column including condenser and reboiler is 40~120, be located at vertically every
The 1/7~3/7 of the total number of theoretical plate of number of theoretical plate Zhan of the public rectifying section part on plate top, positioned at the public of vertical partition plate lower part
The number of theoretical plate of stripping section part is the 1/7~2/7 of total number of theoretical plate；The number of theoretical plate of feedboard position is vertical partition plate
The 1/6~3/4 of number of theoretical plate, the number of theoretical plate of side take-off position are the 1/4~3/4 of vertical partition plate number of theoretical plate.
3. a kind of method that initial gross separation is carried out to F- T synthesis water using next door rectifying column according to claim 1,
It is characterized in that, the oxygen-bearing organic matter for being 1%~15% containing mass percent in the synthetic water raw material.
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| CN111499495A (en) * | 2020-04-23 | 2020-08-07 | 河北工业大学 | Method for separating and recovering non-acidic oxygen-containing organic matters from Fischer-Tropsch synthesis water |
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| CN111573761A (en) * | 2020-04-23 | 2020-08-25 | 国家能源集团宁夏煤业有限责任公司 | Method and system for separating and recovering non-acidic oxygen-containing organic matters in Fischer-Tropsch synthesis water |
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