CN107954957A - For producing the distilling apparatus and method of furfural - Google Patents
For producing the distilling apparatus and method of furfural Download PDFInfo
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- CN107954957A CN107954957A CN201711032535.7A CN201711032535A CN107954957A CN 107954957 A CN107954957 A CN 107954957A CN 201711032535 A CN201711032535 A CN 201711032535A CN 107954957 A CN107954957 A CN 107954957A
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/38—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D307/40—Radicals substituted by oxygen atoms
- C07D307/46—Doubly bound oxygen atoms, or two oxygen atoms singly bound to the same carbon atom
- C07D307/48—Furfural
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
A kind of distilling apparatus and method for being used to produce furfural, include the distilling apparatus body with topping still and treating column, be arranged between topping still and treating column and with the inter-chamber tower group of at least triple effect evaporation processing, pass through the evaporation process of inter-chamber tower group, the impurity thing of furfural liquid is removed, no longer two tower batch distillation techniques and three tower continuous stills, therefore improve furfural quality and refinement rate of furfural.
Description
Technical field
The present invention relates to a kind of distilling apparatus and method, especially a kind of distilling apparatus and method for being used to produce furfural.
Background technology
Furfural is widely used：For synthetic resin, insulating materials, varnish, nitrofurazone and refined crude anthracene, and it is used as anti-corrosion
Agent and cigarette flavoring etc..Furfural is also excellent solvent, available for refining petroleum, bright stock, refines grease and dissolving nitre
Acid cellulose etc., or the raw materials and reagents of pharmacy and a variety of organic syntheses.Furfuryl alcohol is made through catalytic hydrogenation in furfural, for organic
Synthesis, synthetic fibers, rubber, pesticide etc., it can also be used to manufacture resin, rocket fuel and solvent；Furfural is oxidized to be made furancarboxylic acid,
As preservative, fungicide and make spices；Furfural resin is made through polycondensation in furfural, for manufacture corrosion resistant plastics, coating,
Clay and adhesive, in chemical industry, furfural is the indispensable basic material and solvent of many chemical products, is production paint
With the indispensable solvent of cosmetics；Meanwhile other industrial departments are also required to substantial amounts of chaff in DYE PRODUCTION, national defense industry etc.
Aldehyde, thus be accordingly used in the distilling apparatus for producing furfural and method is a kind of important distilling apparatus and method, is used to make existing
Take in the distilling apparatus and method of furfural, furfural distillation technique is substantially two tower batch distillation techniques：Thick gold-plating tower adds refining kettle i.e.
As shown in Figure 1, the technology investment is few, it is easy to operate.After obtaining chaff aldehyde by thick gold-plating tower, dehydration and refined two procedures will be
Completed in same refining kettle, intermediate link needs to switch, and operation fluctuation is big, therefore refined rate is relatively low, and product quality is general, furfural
For refined rate generally in 0.78-0.8 or so, there are three tower continuous distillation process in furfural distillation technique：Thick gold-plating tower, dehydrating tower, essence
After tower processed by thick gold-plating tower i.e. as shown in Fig. 2, obtain chaff aldehyde, the dehydration of chaff aldehyde and refined respectively by dehydrating tower and treating column
Complete, intermediate link needs to switch, and realizes continuous and stable production.Therefore product quality is stablized, and refinement rate of furfural generally exists
0.8-0.81, it is impossible to produce top grade furfural.
Based on existing technical problem, technical characteristic and technique effect, application technical solution of the invention is made.
The content of the invention
The object of the present invention is a kind of distilling apparatus for being used to produce furfural；
The object of the present invention is a kind of distillating method for being used to produce furfural.
In order to overcome above-mentioned technical disadvantages, the object of the present invention is to provide a kind of distilling apparatus and side for being used to produce furfural
Method, therefore improve refinement rate of furfural.
To reach above-mentioned purpose, the present invention adopts the technical scheme that：A kind of distilling apparatus for being used to produce furfural, comprising
There is the distilling apparatus body with topping still and treating column, be arranged between topping still and treating column and steamed with least triple effect
Send out the inter-chamber tower group of processing.
Due to devising distilling apparatus body and inter-chamber tower group, by the evaporation process of inter-chamber tower group, to the miscellaneous of furfural liquid
Matter thing is removed, no longer two tower batch distillation techniques and three tower continuous stills, therefore improves refinement rate of furfural.
The present invention devises, and distilling apparatus body is mutually interconnected with inter-chamber tower group in the way of processing component is distilled in increase
It is logical.
The present invention devises, inter-chamber tower group and distillation in the way of increase removes organic acid, lighter component thing and moisture content
Device body connects.
The present invention devises, and inter-chamber tower group is arranged to include first group of inter-chamber tower with the scrubbing tower for removing organic acid
Among group, second group of inter-chamber tower group of removal of impurities tower with removal lighter component thing and the 3rd group with the dehydrating tower for removing moisture content
Tower group, the pressure of scrubbing tower are arranged to 40 ± 1 DEG C of the temperature of normal pressure and scrubbing tower, and the pressure of removal of impurities tower removal of impurities tower is arranged to
81-85 DEG C of the tower top temperature of 100-104 DEG C of the column bottom temperature of 51.5-109.5kpa and the tower that cleans, the tower that cleans, the pressure of dehydrating tower
Power is arranged to the tower top temperature 50.5-54.5 of 66.5-70.5 DEG C of the column bottom temperature of 14-29.5kpa and dehydrating tower, dehydrating tower
℃。
The present invention devises, and also includes recovery tower, the 6th condenser and feed pump, and distilling apparatus body is arranged to also wrap
Containing the first condenser, phase-splitter and the 5th condenser,
First group of inter-chamber tower group is arranged to also include the second condenser, and second group of inter-chamber tower group is arranged to also to include the 3rd cold
Condenser and return tank, the 3rd group of inter-chamber tower group are arranged to also include the 4th condenser,
The output port of furfural raw material flow container is arranged to be arranged to the top port of the Centronics port of topping still and topping still
Connected with the input port of the first condenser, the output port of the first condenser is arranged to connect simultaneously with the Centronics port of phase-splitter
And the top port of phase-splitter is arranged to connect with the lateral port on the top of topping still,
The bottom port of phase-splitter is arranged to connect with the lateral port on the top of scrubbing tower and the top port of scrubbing tower is set
It is set to and is connected with the input port of the second condenser, the output port of the second condenser is arranged to the side with the top of scrubbing tower
Port connects and the bottom port of scrubbing tower is arranged to connect with the Centronics port for the tower that cleans, and wherein the one of the bottom of scrubbing tower
A lateral port is arranged to connect with furfural raw material flow container and the other in which lateral port of the bottom of scrubbing tower is arranged to
Connected with technique softened water.
The top port of removal of impurities tower is arranged to connect with the input port of the 3rd condenser, the output port of the 3rd condenser
Be arranged to by return tank with clean tower top lateral port connect and the bottom port for the tower that cleans be arranged to by into
Material pump is connected with the lateral port on the top of dehydrating tower, and one of lateral port of the bottom for the tower that cleans is arranged to former with furfural
Material liquid tank connects,
The top port of dehydrating tower is arranged to connect with the input port of the 4th condenser, and the output port of the 4th condenser is set
To be stood with waste liquid, tank connects and the bottom port of dehydrating tower is arranged to connect with the Centronics port for the treatment of column, the bottom of dehydrating tower
The lateral port at end is arranged to connect with furfural raw material flow container,
The top port for the treatment of column is arranged to connect with the input port of the 5th condenser, and the output port of the 5th condenser is set
To be connected with finished product furfural tank and the bottom port for the treatment of column is arranged to connect with the Centronics port of recovery tower, the bottom for the treatment of column
The lateral port at end is arranged to connect with furfural raw material flow container,
The top port of recovery tower is arranged to connect with the input port of the 6th condenser, and the output port of the 6th condenser is set
To be stood with waste liquid, tank connects and the bottom port of recovery tower is arranged to connect with aldehyde mud tank, the lateral ends of the bottom of recovery tower
Mouth is arranged to connect with furfural raw material flow container,
The hydrolysis vapour port of topping still, the hydrolysis vapour port of scrubbing tower, hydrolysis vapour port, the hydrolysis vapour end of dehydrating tower of removal of impurities tower
The hydrolysis vapour port of mouth and treating column is respectively set to connect with hydrolysis vapour source port and the heating port of recovery tower is arranged to
Connected with source of water vapor port, the recirculated water port of the first condenser, the recirculated water port of the second condenser, the 3rd condenser
Recirculated water port, the recirculated water port of the 4th condenser, the recirculated water port of the 5th condenser and the recirculated water of the 6th condenser
Port is respectively set to connect with source of recycled water port and return tank is arranged to connect with vacuum pump.
The present invention devises, and topping still is provided with the tower-like body for distillation heat source with hydrolysis vapour.
The present invention devises, and scrubbing tower is arranged to the tower-like body with washing softening water spray.
The present invention devises, and removal of impurities tower is arranged to the tower-like body with technique softening water spray.Methanol is isolated from tower top
Operated under normal pressure with light component, impurities removal towers such as acetone, it is ensured that the emptying of condenser is communicated with air, the charging of impurities removal tower
It is the discharging of scrubbing tower bottom of towe, it is cold by condenser that impurities removal column overhead contains methanol, acetone, water, the light component of a small amount of furfural sum
Enter return tank after solidifying, one material returns to impurities removal tower as reflux gravity flow, and another strand enters light component as extraction gravity flow and store up
Tank.
The present invention devises, and dehydrating tower is arranged to the tower-like body with vaporising device.
The present invention devises, and treating column is arranged to the tower-like body with vaporising device.Treating column is arranged to have evaporation dress
The tower-like body put, is connected by being arranged on treating column bottom discharge outlet with kettle liquid pump, when treating column bottoms level reaches technique control
After system, bottom high-boiling-point impurity is pumped toward recovery tower into kettle liquid is crossed,
The present invention devises, and recovery tower is arranged to the tower-like body with vaporising device.
The present invention devises, and the pressure of topping still is arranged to the column bottom temperature 103-107 of 85-120kpa and topping still
DEG C, 93-97 DEG C of the tower top temperature of topping still, the pressure for the treatment of column is arranged to the column bottom temperature of 70-198kpa and treating column
118-122 DEG C, 88-92 DEG C of the tower top temperature for the treatment of column, the pressure of recovery tower are arranged to the tower of 101-169kpa and recovery tower
113-117 DEG C of bottom temperature, 98-102 DEG C of the tower top temperature of recovery tower.
The present invention devises, the first condenser, the second condenser, the 3rd condenser, the 4th condenser, the 5th condenser and
6th condenser is respectively set to heat exchanger and phase-splitter is arranged to steam-water separator, and return tank is arranged to sealing can-like
Body.
The present invention devises, and topping still and treating column are arranged to distill according to triple effect with scrubbing tower, removal of impurities tower and dehydrating tower
The mode of removal of impurities is distributed and treating column and recovery tower are arranged to be distributed in the way of evaporating and recycling, a topping still, one
First condenser and a phase-splitter are arranged to one group of composition and slightly evaporate component and a treating column and the 5th condenser are set
One group of rectifying component of composition is set to, a recovery tower and the 6th condenser are arranged to one group of recovery part of composition and one
Scrubbing tower, second condenser, a removal of impurities tower, the 3rd condenser, a return tank, a dehydrating tower, one
Four condensers, a treating column and the 5th condenser are arranged to one group of triple effect distillation removal of impurities component of composition.
The present invention devises, a kind of distillating method for being used to produce furfural, its step is：It is 4- to concentration by topping still
6% furfural material liquid carries out being processed into the furfural liquid that concentration is 85-88%, and by scrubbing tower, organic acid is removed to furfural liquid
Processing, by removal of impurities tower, is removed furfural liquid the processing of lighter component thing, and by dehydrating tower, moisture content processing is removed to furfural liquid,
By treating column, heavy component thing processing finished product furfural is removed to furfural liquid.
The present invention devises, its step is：
The furfural material liquid that concentration is 4-6% enters in topping still, keeps topping still pressure to be arranged to 85-120kpa and slightly evaporate
103-107 DEG C of the column bottom temperature of tower, 93-97 DEG C of the tower top temperature of topping still, the furfural of the top port output vaporization of topping still
Material liquid is cooled down by the first condenser and separated with the moisture content of phase-splitter, is formed concentration as the furfural liquid of 85-88% and is transported to
In scrubbing tower, keep the pressure of scrubbing tower to be arranged to 40 ± 1 DEG C of the temperature of normal pressure and scrubbing tower, carried out by technique softened water
Washing removes organic acid treatment, forms the furfural liquid of acidity≤0.008mol/L and is transported in removal of impurities tower, keeps removal of impurities tower
Pressure be arranged to 51.5-109.5kpa and the tower that cleans 100-104 DEG C of column bottom temperature, clean tower tower top temperature 81-85
DEG C, carrying out washing treatment is carried out by technique softened water, the processing of lighter component thing is removed to the furfural liquid of acidity≤0.008mol/L,
Furfural liquid I and dehydrating tower is transported among being formed, keeps the pressure of dehydrating tower to be arranged to 14-29.5kpa and dehydrating tower
50.5-54.5 DEG C of the tower top temperature of 66.5-70.5 DEG C of column bottom temperature, dehydrating tower, moisture content, shape are removed to middle furfural liquid I
Into moisture reach≤0.05% middle furfural liquid II and be transported to treating column, keep the pressure for the treatment of column to be arranged to 70-
88-92 DEG C of the tower top temperature of 118-122 DEG C of the column bottom temperature of 198kpa and treating column, treating column, to middle furfural liquid II into
Row removes the processing of heavy component thing, and the furfural liquid of the top port output vaporization for the treatment of column cools down to obtain finished product by the 5th condenser
Furfural, the recycling aldehyde liquid of the bottom port output for the treatment of column are input to recovery tower, keep the pressure of recovery tower to be arranged to 101-
98-102 DEG C of the tower top temperature of 113-117 DEG C of the column bottom temperature of 169kpa and recovery tower, recovery tower, the bottom of recovery tower
Lateral port obtains residual furfural,
The chaff aldehyde part reflux of second condenser and phase-splitter to scrubbing tower, the 3rd condenser and return tank are to removal of impurities tower
The reflux of a chaff aldehyde part and increase reflux power, output of the 4th condenser to the waste liquid of the chaff aldehyde of dehydrating tower, the 6th is cold
Output of the condenser to the waste liquid of the chaff aldehyde of recovery tower.
The technical effects of the invention are that：Furfural stoste from hydrolysis workshop section, initially enters thick gold-plating tower, by chaff aldehyde
Concentration brings up to 85-88%, the part reflux of chaff aldehyde from 4-6%, and remainder enters scrubbing tower.Chaff aldehyde adds softening to wash
Wash, remove the organic acid in chaff aldehyde, while reduce the aldehyde contenting amount of primary distillation tower bottom of towe waste water, make chaff aldehydic acid degree≤
0.008mol/L；Chaff aldehyde stoste by scrubbing tower washing enters removal of impurities tower, and light group in chaff aldehyde is removed by the tower that cleans
Part, reduce the concentration of lighter component, while improve distillation efficiency and refined rate；Enter by washing with the chaff aldehyde after impurities removal
Dehydrating tower, the moisture of chaff aldehyde reach≤0.05%, and dewatered chaff aldehyde enters treating column, are removed in treating column high
The impurity of component, obtains the top grade furfural of indices qualification.Recovery tower is responsible for recycling the residual furfural in aldehyde liquid, solves existing
Raffinate takes the loss of the bad recycling of furfural out of, while will be dehydrated furfural in the foreshot of generation and recycled, and reduces furfural treatment
During lose, improve furfural yield, with softening water washing chaff aldehyde come instead of plus alkali neutralization technique, make having in chaff aldehyde
Machine acid≤0.008mol/L, removes the lighter component in chaff aldehyde, reduces the concentration of the lighter component in primary distillation tower, improve fore-running
Column efficiency and refined rate；The residual furfural in aldehyde liquid is recycled, solves the loss that existing raffinate takes the bad recycling of furfural out of, at the same time will
Furfural is recycled in the foreshot that dehydration procedure produces, and is improved furfural yield, using new and effective column plate, is improved equipment
Anti-clogging, in addition to recovery tower, remaining five column distillation heat source is all using hydrolysis vapour, without supplementing primary steam, production process
Using DCS Distributed Control Systems, reduce labor intensity, stabilize production, improve product quality, the device by thick gold-plating tower,
Totally six towers form for water scrubber, removal of impurities tower, dehydrating tower, treating column, recovery tower.Organic acid in chaff aldehyde is removed by water scrubber,
Top grade refinement rate of furfural is improved, while thick gold-plating tower waste water aldehyde contenting amount can be reduced；Light group in chaff aldehyde is removed by the tower that cleans
Part, reduce the concentration of the lighter component in primary distillation tower, improve fore-running column efficiency and refined rate；By setting recovery tower, recycling
Residual furfural in aldehyde liquid, solves the problems, such as that existing raffinate takes the bad recycling of furfural out of, while will be dehydrated the foreshot produced
Middle furfural is recycled, and is reduced and is lost in Furfural Treating Process, improves furfural yield；The dehydration of chaff aldehyde and it is refined respectively by
Dehydrating tower and treating column are completed, and intermediate link need not switch, and realize top grade furfural continuous and stable production.
In the technical program, the lighter component thing of furfural refers to methanol, acetone, water, and the heavy component thing of furfural refers to aldehyde mud.
In the technical program, the distilling apparatus body and inter-chamber tower group of increase distillation processing component are special for important technology
Sign, for producing in the distilling apparatus of furfural and the technical field of method, has novelty, creativeness and practicality, at this
Term in technical solution is all that can be explained and understood with patent document in the art.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the two tower batch distillation technique connection relationship diagrams of the present invention；
Fig. 2 is the three tower continuous distillation process connection relationship diagrams of the present invention；
Fig. 3 is the schematic diagram for being used to produce the distilling apparatus of furfural of the present invention.
Embodiment
According to guidelines for examination, such as " having ", "comprising" and " comprising " term used in the present invention should be understood
Not allot the presence or addition of one or more of the other element or its combination.
In the description of the present invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " are the orientation or position relationship of general expression, are for only for ease of
Description is of the invention to be described with simplified, rather than the device or element of instruction or hint meaning must be with specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second ", " the 3rd "
Description purpose is only used for, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It can be combined with each other into conflict.
Below in conjunction with the embodiment of the present invention, the technical solution in the embodiment of the present invention is clearly and completely retouched
State, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, those of ordinary skill in the art's all other embodiments obtained without making creative work,
Belong to the scope of protection of the invention.
A kind of distilling apparatus for being used to produce furfural, Fig. 1 is one embodiment of the present invention, is illustrated with reference to attached drawing
The present embodiment, includes topping still 1, the first condenser 11, phase-splitter 12, scrubbing tower 2, the second condenser 21, removal of impurities tower 3, the
Three condensers 31, return tank 32, dehydrating tower 4, the 4th condenser 41, treating column 5, the 5th condenser 51, recovery tower the 6, the 6th are cold
Condenser 61 and feed pump 7,
The output port of furfural raw material flow container is arranged to set with the top port of the Centronics port of topping still 1 and topping still 1
To be connected with the input port of the first condenser 11, the output port of the first condenser 11 is arranged to the intermediate ends with phase-splitter 12
The top port of mouth connection and phase-splitter 12 is arranged to connect with the lateral port on the top of topping still 1,
The bottom port of phase-splitter 12 is arranged to connect with the lateral port on the top of scrubbing tower 2 and the top end of scrubbing tower 2
Mouth is arranged to connect with the input port of the second condenser 21, and the output port of the second condenser 21 is arranged to and scrubbing tower 2
The lateral port on top connects and the bottom port of scrubbing tower 2 is arranged to connect with the Centronics port for the tower 3 that cleans, scrubbing tower 2
One of lateral port of bottom be arranged to connect with furfural raw material flow container and the other in which of the bottom of scrubbing tower 2
Lateral port is arranged to connect with technique softened water,
The top port of removal of impurities tower 3 is arranged to connect with the input port of the 3rd condenser 31, the output terminal of the 3rd condenser 31
Mouth is arranged to connect with the lateral port on the top for the tower 3 that cleans by return tank 32 and the bottom port for the tower 3 that cleans is arranged to
Connected by feed pump 7 with the lateral port on the top of dehydrating tower 4, one of lateral port of the bottom for the tower 3 that cleans is set
To be connected with furfural raw material flow container.
The top port of dehydrating tower 4 is arranged to connect with the input port of the 4th condenser 41, the 4th condenser 41 it is defeated
Exit port is arranged to connect with waste liquid standing tank and the bottom port of dehydrating tower 4 is arranged to and the Centronics port for the treatment of column 5 connects
Logical, the lateral port of the bottom of dehydrating tower 4 is arranged to connect with furfural raw material flow container,
The top port for the treatment of column 5 is arranged to connect with the input port of the 5th condenser 51, the output terminal of the 5th condenser 51
Mouth is arranged to connect with finished product furfural tank and the bottom port for the treatment of column 5 is arranged to connect with the Centronics port of recovery tower 6, essence
The lateral port of the bottom of tower 5 processed is arranged to connect with furfural raw material flow container,
The top port of recovery tower 6 is arranged to connect with the input port of the 6th condenser 61, the output terminal of the 6th condenser 61
Mouth is arranged to connect with waste liquid standing tank and the bottom port of recovery tower 6 is arranged to connect with aldehyde mud tank, the bottom of recovery tower 6
Lateral port be arranged to connect with furfural raw material flow container,
The hydrolysis vapour port of topping still 1, the hydrolysis for hydrolyzing vapour port, dehydrating tower 4 of the hydrolysis vapour port, removal of impurities tower 3 of scrubbing tower 2
Vapour port and the hydrolysis vapour port for the treatment of column 5 are respectively set to connect with hydrolysis vapour source port and the heating port of recovery tower 6
It is arranged to connect with source of water vapor port, the recirculated water port of the first condenser 11, the recirculated water port of the second condenser 21,
The recirculated water port of three condensers 31, the recirculated water port of the 4th condenser 41, the recirculated water port of the 5th condenser 51 and
The recirculated water port of six condensers 61 is respectively set to connect with source of recycled water port and return tank 32 is arranged to and vacuum pump
Connection.
In the present embodiment, topping still 1 is provided with the tower-like body for distillation heat source with hydrolysis vapour.
By topping still 1, the support tie point to the first condenser 11 and phase-splitter 12 is realized, by topping still 1, is realized
Connected with the first condenser 11, realize the connection with phase-splitter 12, the concentration for realizing chaff aldehyde is concentrated to 85- from 4-6%
88% processing.
In the present embodiment, scrubbing tower 2 is arranged to the tower-like body with washing softening water spray.
By scrubbing tower 2, the support tie point to the second condenser 21 and removal of impurities tower 3 is realized, by scrubbing tower 2, is realized
Connect with the second condenser 21, realize and connected with removal of impurities tower 3, realize the organic acid removed in chaff aldehyde and make chaff
The processing of aldehydic acid degree≤0.008mol/L.
In the present embodiment, removal of impurities tower 3 is arranged to the tower-like body with technique softening water spray.Methanol is isolated from tower top
With the light component such as acetone.Impurities removal tower 3 operates under normal pressure, it is ensured that the emptying of condenser is communicated with air.Impurities removal tower 3 into
Material is the discharging of 2 bottom of towe of scrubbing tower, and 3 tower top of impurities removal tower contains methanol, acetone, water, the light component of a small amount of furfural sum by condensation
Enter return tank after device condensation, one material flows automatically as reflux returns to impurities removal tower 3, and another strand as extraction gravity flow into light group
Divide storage tank.
By the tower 3 that cleans, the support tie point to the 3rd condenser 31 and feed pump 7 is realized, by removal of impurities tower 3, is realized
Connected with the 3rd condenser 31, realize and connected with feed pump 7, realize the processing for removing the lighter component in chaff aldehyde.
In the present embodiment, dehydrating tower 4 is arranged to the tower-like body with vaporising device.
By dehydrating tower 4, the support tie point to the 4th condenser 41, treating column 5 and feed pump 7 is realized, by being dehydrated
Tower 4, realizes and is connected with the 4th condenser 41, realizes and is connected with treating column 5, realizes and is connected with feed pump 7, realizes thick
The moisture of furfural reaches≤0.05% processing.
In the present embodiment, treating column 5 is arranged to the tower-like body with vaporising device.By being arranged on 5 bottom for the treatment of column
Outlet is connected with kettle liquid pump 55, and after 5 bottoms level for the treatment of column reaches technology controlling and process, bottom high-boiling-point impurity is pumped into kettle liquid is crossed
55 are sent to recovery tower 6,
By treating column 5, realize the support tie point to the 5th condenser 51 and recovery tower 6, by treating column 5, realize with
5th condenser 51 connects, and realizes and is connected with recovery tower 6, realizes the processing of the impurity of the high component of removal of chaff aldehyde.
In the present embodiment, recovery tower 6 is arranged to the tower-like body with vaporising device.
By recovery tower 6, realize the support tie point to the 6th condenser 61, by recovery tower 6, realize with it is the 6th cold
Condenser 61 connects, and realizes the processing of the residual furfural in recycling aldehyde liquid.
In the present embodiment, the pressure of topping still 1 is arranged to 85kpa（A）It is and 103 DEG C of the column bottom temperature of topping still 1, thick
93 DEG C of the tower top temperature of tower 1 is evaporated, the pressure of 2 scrubbing tower 2 of scrubbing tower is arranged to 39 DEG C of the temperature of normal pressure and scrubbing tower 2, removal of impurities
The pressure of the removal of impurities tower 3 of tower 3 is arranged to 51.5kpa（A）And the tower top temperature of 100 DEG C of the column bottom temperature for the tower 3 that cleans, the tower 3 that cleans
81 DEG C, the pressure of dehydrating tower 4 is arranged to 14kpa（A）And 66.5 DEG C of the column bottom temperature of dehydrating tower 4, the tower top temperature of dehydrating tower 4
50.5℃.The pressure for the treatment of column 5 is arranged to 70kpa（A）And the tower top temperature of 118 DEG C of the column bottom temperature for the treatment of column 5, treating column 5
88 DEG C of degree, the pressure of recovery tower 6 is arranged to 101kpa（A）And the tower top temperature of 113 DEG C of the column bottom temperature of recovery tower 6, recovery tower 6
98 DEG C of degree.
In the present embodiment, the first condenser 11, the second condenser 21, the 3rd condenser 31, the 4th condenser the 41, the 5th
51 and the 6th condenser 61 of condenser is respectively set to heat exchanger and phase-splitter 12 is arranged to steam-water separator, return tank 32
It is arranged to sealing tank-like body.
By the first condenser 11 and phase-splitter 12, realize and flow back and a chaff aldehyde part for topping still 1 to scrubbing tower 2
Conveying, by the second condenser 21, the chaff aldehyde part reflux to scrubbing tower 2 is realized, by the 3rd condenser 31 and reflux
Tank 32, realizes the chaff aldehyde part reflux to the tower 3 that cleans and increase reflux power, by the 4th condenser 41, realizes pair
The output of the waste liquid of the chaff aldehyde of dehydrating tower 4, by the 5th condenser 51, realizes the output to the finished product furfural for the treatment of column 5, by
6th condenser 61, realizes the output of the waste liquid to the chaff aldehyde of recovery tower 6.
In the present embodiment, topping still 1 and treating column 5 are arranged to according to triple effect with scrubbing tower 2, removal of impurities tower 3 and dehydrating tower 4
The mode of distillation removal of impurities is distributed and treating column 5 is arranged to be distributed in the way of evaporating and recycling with recovery tower 6, a topping still
1st, first condenser 11 and a phase-splitter 12 are arranged to one group of composition and slightly evaporate component and a treating column 5 and one the
Five condensers 51 are arranged to one group of rectifying component of composition, and a recovery tower 6 and the 6th condenser 61 are arranged to one group of composition
2,3, one, the removal of impurities tower of the second condenser 21, one the 3rd condensers 31, one of recovery part and a scrubbing tower return
Stream 32, one, tank, 41, treating columns 5 of the 4th condenser of dehydrating tower 4, one and the 5th condenser 51 are arranged to composition one
Group triple effect distillation removal of impurities component.
Second embodiment of the present invention, distilling apparatus body and inter-chamber tower in the way of processing component is distilled in increase
Group is interconnected.
In the present embodiment, inter-chamber tower group and distillation in the way of increase removes organic acid, lighter component thing and moisture content
Device body connects..
The present invention second embodiment be based on one embodiment,
The 3rd embodiment of the present invention, the pressure of topping still 1 are arranged to 120kpa（A）And the column bottom temperature 107 of topping still 1
DEG C, 97 DEG C of the tower top temperature of topping still 1, the pressure of 2 scrubbing tower 2 of scrubbing tower is arranged to 41 DEG C of the temperature of normal pressure and scrubbing tower 2,
The pressure of the removal of impurities removal of impurities tower 3 of tower 3 is arranged to 109.5kpa（A）And the tower top of 104 DEG C of the column bottom temperature for the tower 3 that cleans, the tower 3 that cleans
85 DEG C of temperature, the pressure of dehydrating tower 4 is arranged to 29.5kpa（A）And 70.5 DEG C of the column bottom temperature of dehydrating tower 4, the tower of dehydrating tower 4
Push up 54.5 DEG C of temperature.The pressure for the treatment of column 5 is arranged to 198kpa（A）And 122 DEG C of the column bottom temperature for the treatment of column 5, treating column 5
92 DEG C of tower top temperature, the pressure of recovery tower 6 is arranged to 169kpa（A）And 117 DEG C of the column bottom temperature of recovery tower 6, recovery tower 6
102 DEG C of tower top temperature.
The 4th embodiment of the present invention, the pressure of topping still 1 are arranged to 85-120kpa（A）And the bottom of towe of topping still 1
103-107 DEG C of temperature, 93-97 DEG C of the tower top temperature of topping still 1, the pressure of 2 scrubbing tower 2 of scrubbing tower are arranged to normal pressure and wash
40 ± 1 DEG C of the temperature of tower 2, the pressure of the removal of impurities removal of impurities tower 3 of tower 3 are arranged to 51.5-109.5kpa（A）And the bottom of towe for the tower 3 that cleans
81-85 DEG C of the tower top temperature of 100-104 DEG C of temperature, the tower 3 that cleans, the pressure of dehydrating tower 4 are arranged to 14-29.5kpa（A）And take off
66.5-70.5 DEG C of the column bottom temperature of water tower 4,50.5-54.5 DEG C of the tower top temperature of dehydrating tower 4.The pressure for the treatment of column 5 is arranged to
70-198kpa（A）And 88-92 DEG C of the tower top temperature of 118-122 DEG C of the column bottom temperature for the treatment of column 5, treating column 5, recovery tower 6
Pressure is arranged to 101-169kpa（A）And the tower top temperature 98-102 of 113-117 DEG C of the column bottom temperature of recovery tower 6, recovery tower 6
℃。
The 5th embodiment of the present invention, the pressure of topping still 1 are arranged to 100kpa（A）And the bottom of towe temperature of topping still 1
105 DEG C, 95 DEG C of the tower top temperature of topping still 1 are spent, the pressure of 2 scrubbing tower 2 of scrubbing tower is arranged to the temperature of normal pressure and scrubbing tower 2
40.5 DEG C, the pressure of the removal of impurities removal of impurities tower 3 of tower 3 is arranged to 78kpa（A）And 102 DEG C of the column bottom temperature for the tower 3 that cleans, removal of impurities tower 3
83 DEG C of tower top temperature, the pressure of dehydrating tower 4 is arranged to 22kpa（A）And 68.5 DEG C of the column bottom temperature of dehydrating tower 4, dehydrating tower 4
52.5 DEG C of tower top temperature.The pressure for the treatment of column 5 is arranged to 130kpa（A）And 120 DEG C of the column bottom temperature for the treatment of column 5, treating column 5
90 DEG C of tower top temperature, the pressure of recovery tower 6 is arranged to 120kpa（A）And 115 DEG C of the column bottom temperature of recovery tower 6, recovery tower 6
100 DEG C of tower top temperature.
With reference to embodiment, the present invention is further described, following embodiments are intended to illustrate invention rather than to this
The further restriction of invention.A kind of distillating method for being used to produce furfural, one embodiment of the invention, its step are：
The furfural material liquid that concentration is 4% enters in topping still 1, keeps 1 pressure of topping still to be arranged to 85kpa（A）And topping still
1 103 DEG C of column bottom temperature, 93 DEG C of the tower top temperature of topping still 1, the furfural material liquid of the top port output vaporization of topping still 1
Cooled down by the first condenser 11 and separated with the moisture content of phase-splitter 12, formed concentration for 85% furfural liquid and be transported to washing
In tower 2, keep the pressure of scrubbing tower 2 to be arranged to 40 DEG C of the temperature of normal pressure and scrubbing tower 2, washed by technique softened water
Organic acid treatment is removed, the furfural liquid of acidity≤0.005mol/L is formed and is transported in removal of impurities tower 3, keep removal of impurities tower 3
Pressure is arranged to 51.5kpa（A）And 81 DEG C of the tower top temperature of 100 DEG C of the column bottom temperature for the tower 3 that cleans, the tower 3 that cleans, passes through technique
Softened water carries out carrying out washing treatment, is removed the processing of lighter component thing to the furfural liquid of acidity≤0.005mol/L, forms middle chaff
Aldehyde liquid I and dehydrating tower 4 is transported to, keeps the pressure of dehydrating tower 4 to be arranged to 14kpa（A）And the column bottom temperature of dehydrating tower 4
66.5 DEG C, 50.5 DEG C of the tower top temperature of dehydrating tower 4, are removed middle furfural liquid I moisture content, formed moisture reach≤
0.03% middle furfural liquid II and treating column 5 is transported to, keeps the pressure for the treatment of column 5 to be arranged to 70kpa（A）And refine
118 DEG C of the column bottom temperature of tower 5,88 DEG C of the tower top temperature for the treatment of column 5, are removed middle furfural liquid II processing of heavy component thing,
The furfural liquid of the top port output vaporization for the treatment of column 5 obtains finished product furfural, the bottom for the treatment of column 5 by the cooling of the 5th condenser 51
The recycling aldehyde liquid of end port output is input to recovery tower 6, keeps the pressure of recovery tower 6 to be arranged to 101kpa（A）And recovery tower 6
113 DEG C of column bottom temperature, 98 DEG C of the tower top temperature of recovery tower 6, the lateral port of the bottom of recovery tower 6 obtains residual furfural,
The chaff aldehyde part reflux of second condenser 21 and phase-splitter 12 to scrubbing tower 2, the 3rd condenser 31 and return tank 32
The reflux of a chaff aldehyde part and increase reflux power to the tower 3 that cleans, waste liquid of the 4th condenser 41 to the chaff aldehyde of dehydrating tower 4
Output, output of the 6th condenser 61 to the waste liquid of the chaff aldehyde of recovery tower 6.
Result of the test shows：Furfural yield 8-10% is improved, i.e. output increased 10, its performance indicator is：
The present embodiment, furfural is not only produced to furfural material liquid realizes successional evaporation process, while purity to furfural,
The recycling of refinement rate of furfural and residual furfural has all carried out integrated treatment, and the integrated treatment index to furfural material liquid is gone back now
There is no technical solution to reach.
Second embodiment of the present invention, its step are：
The furfural material liquid that concentration is 6% enters in topping still 1, keeps 1 pressure of topping still to be arranged to 120kpa（A）And slightly evaporate
107 DEG C of the column bottom temperature of tower 1,97 DEG C of the tower top temperature of topping still 1, the furfural raw material of the top port output vaporization of topping still 1
Liquid is cooled down by the first condenser 11 and separated with the moisture content of phase-splitter 12, is formed concentration and is washed for 88% furfural liquid and being transported to
Wash in tower 2, keep the pressure of scrubbing tower 2 to be arranged to 41 DEG C of the temperature of normal pressure and scrubbing tower 2, washed by technique softened water
Wash and remove organic acid treatment, form the furfural liquid of acidity≤0.008mol/L and be transported in removal of impurities tower 3, keep removal of impurities tower 3
Pressure be arranged to 109.5kpa（A）And 85 DEG C of the tower top temperature of 104 DEG C of the column bottom temperature for the tower 3 that cleans, the tower 3 that cleans, passes through
Technique softened water carries out carrying out washing treatment, the processing of lighter component thing is removed to the furfural liquid of acidity≤0.008mol/L, in formation
Between furfural liquid I and be transported to dehydrating tower 4, keep the pressure of dehydrating tower 4 to be arranged to 29.5kpa（A）And the bottom of towe of dehydrating tower 4
70.5 DEG C of temperature, 54.5 DEG C of the tower top temperature of dehydrating tower 4, are removed middle furfural liquid I moisture content, form moisture and reach
To≤0.05% middle furfural liquid II and be transported to treating column 5, keep treating column 5 pressure be arranged to 198kpa（A）And
122 DEG C of the column bottom temperature for the treatment of column 5,92 DEG C of the tower top temperature for the treatment of column 5, heavy component thing is removed to middle furfural liquid II
Processing, the furfural liquid of the top port output vaporization for the treatment of column 5 obtain finished product furfural, treating column by the cooling of the 5th condenser 51
The recycling aldehyde liquid of 5 bottom port output is input to recovery tower 6, keeps the pressure of recovery tower 6 to be arranged to 169kpa（A）And return
117 DEG C of column bottom temperature, 102 DEG C of the tower top temperature of recovery tower 6 of tower 6 are received, the lateral port of the bottom of recovery tower 6 is remained
Furfural,
The 3rd embodiment of the present invention, its step are：
The furfural material liquid that concentration is 4-6% enters in topping still 1, keeps 1 pressure of topping still to be arranged to 85-120kpa（A）And
103-107 DEG C of the column bottom temperature of topping still 1,93-97 DEG C of the tower top temperature of topping still 1, the top port output vapour of topping still 1
The furfural material liquid of change is cooled down by the first condenser 11 and separated with the moisture content of phase-splitter 12, forms the furfural that concentration is 85-88%
Liquid and it is transported in scrubbing tower 2, keeps the pressure of scrubbing tower 2 to be arranged to 40 ± 1 DEG C of the temperature of normal pressure and scrubbing tower 2, leads to
Cross technique softened water and carry out the organic acid treatment of washing removal, form the furfural liquid of acidity≤0.008mol/L and be transported to removal of impurities
In tower 3, the pressure of removal of impurities tower 3 is kept to be arranged to 51.5-109.5kpa（A）And 100-104 DEG C of the column bottom temperature for the tower 3 that cleans,
81-85 DEG C of the tower top temperature of removal of impurities tower 3, carries out carrying out washing treatment, to the furfural of acidity≤0.008mol/L by technique softened water
Liquid is removed the processing of lighter component thing, forms middle furfural liquid I and is transported to dehydrating tower 4, keeps the pressure of dehydrating tower 4 to set
For 14-29.5kpa（A）And 50.5-54.5 DEG C of the tower top temperature of 66.5-70.5 DEG C of the column bottom temperature of dehydrating tower 4, dehydrating tower 4,
Moisture content is removed to middle furfural liquid I, formation moisture reaches≤0.05% middle furfural liquid II and is transported to refined
Tower 5, keeps the pressure for the treatment of column 5 to be arranged to 70-198kpa（A）And 118-122 DEG C of the column bottom temperature for the treatment of column 5, treating column 5
88-92 DEG C of tower top temperature, middle furfural liquid II is removed heavy component thing processing, treating column 5 top port output vapour
The furfural liquid of change obtains finished product furfural by the cooling of the 5th condenser 51, and the recycling aldehyde liquid of the bottom port output for the treatment of column 5 is defeated
Enter and keep the pressure of recovery tower 6 to be arranged to 101-169kpa to recovery tower 6（A）And the column bottom temperature 113-117 of recovery tower 6
DEG C, 98-102 DEG C of the tower top temperature of recovery tower 6, the lateral port of the bottom of recovery tower 6 obtains residual furfural,
The 4th embodiment of the present invention, its step are：
The furfural material liquid that concentration is 5% enters in topping still 1, keeps 1 pressure of topping still to be arranged to 100kpa（A）And slightly evaporate
105 DEG C of the column bottom temperature of tower 1,95 DEG C of the tower top temperature of topping still 1, the furfural raw material of the top port output vaporization of topping still 1
Liquid is cooled down by the first condenser 11 and separated with the moisture content of phase-splitter 12, is formed concentration and is washed for 87% furfural liquid and being transported to
Wash in tower 2, keep the pressure of scrubbing tower 2 to be arranged to 40.5 DEG C of the temperature of normal pressure and scrubbing tower 2, carried out by technique softened water
Washing removes organic acid treatment, forms the furfural liquid of acidity≤0.006mol/L and is transported in removal of impurities tower 3, keeps removal of impurities tower
3 pressure is arranged to 125.5kpa（A）And 83 DEG C of the tower top temperature of 102 DEG C of the column bottom temperature for the tower 3 that cleans, the tower 3 that cleans, passes through
Technique softened water carries out carrying out washing treatment, the processing of lighter component thing is removed to the furfural liquid of acidity≤0.006mol/L, in formation
Between furfural liquid I and be transported to dehydrating tower 4, keep the pressure of dehydrating tower 4 to be arranged to 22.5kpa（A）And the bottom of towe of dehydrating tower 4
68.5 DEG C of temperature, 52.5 DEG C of the tower top temperature of dehydrating tower 4, are removed middle furfural liquid I moisture content, form moisture and reach
To≤0.04% middle furfural liquid II and be transported to treating column 5, keep treating column 5 pressure be arranged to 138kpa（A）And
120 DEG C of the column bottom temperature for the treatment of column 5,90 DEG C of the tower top temperature for the treatment of column 5, heavy component thing is removed to middle furfural liquid II
Processing, the furfural liquid of the top port output vaporization for the treatment of column 5 obtain finished product furfural, treating column by the cooling of the 5th condenser 51
The recycling aldehyde liquid of 5 bottom port output is input to recovery tower 6, keeps the pressure of recovery tower 6 to be arranged to 120kpa（A）And return
115 DEG C of column bottom temperature, 100 DEG C of the tower top temperature of recovery tower 6 of tower 6 are received, the lateral port of the bottom of recovery tower 6 is remained
Furfural,
The present invention has the characteristics that lower：
1st, due to devising distilling apparatus body and inter-chamber tower group, by the evaporation process of inter-chamber tower group, to the impurity of furfural liquid
Thing is removed, no longer two tower batch distillation techniques and three tower continuous stills, therefore improves refinement rate of furfural.
2nd, due to devising 6 and the 6th condenser 61 of recovery tower, the recycling of residual furfural is realized.
3rd, due to devising feed pump 7, the mobile performance of material is improved.
4th, due to devising scrubbing tower 2, the second condenser 21, removal of impurities tower 3, the 3rd condenser 31, return tank 32, dehydrating tower
4 and the 4th condenser 41, the different impurities in furfural are eliminated, chemical method is not used and is removed impurity, ensure that chaff
The purity of aldehyde.
4th, the restriction of number range has been carried out to planform due to devising, has made technical side of the number range for the present invention
Technical characteristic in case, is not the technical characteristic for being calculated by formula or being drawn by limited number of time experiment, and experiment shows the numerical value
The technical characteristic of scope achieves good technique effect.
5th, due to devising the technical characteristic of the present invention, in the effect of the independent and mutual set of technical characteristic,
Shown by experiment, property indices of the invention are at least 1.7 times for existing property indices, have by assessing
There is good market value.
Also other technical characteristics coupled with the distilling apparatus body of increase distillation processing component and inter-chamber tower group are all
It is one of the embodiment of the present invention, and each technical characteristic of embodiment described above can be combined arbitrarily, to meet
The requirement of Patent Law, patent regulation and guidelines for examination, is no longer possible to each technical characteristic in above-described embodiment
The embodiment of combination be all described.
Above-described embodiment is provided by the present invention to be used to produce the distilling apparatus of furfural and one kind of method realizes shape
Formula, other deformations of the scheme provided according to the present invention, increases and either reduces composition therein or step or by the present invention
For other technical fields close with the present invention, protection scope of the present invention is belonged to.
Claims (10)
1. a kind of distilling apparatus and method for being used to produce furfural, it is characterized in that：Include with topping still（1）And treating column
（5）Distilling apparatus body, be arranged on topping still（1）And treating column（5）Between and with least triple effect evaporation processing
Between tower group.
2. a kind of distilling apparatus for being used to produce furfural, it is characterized in that：Distillation is filled in the way of processing component is distilled in increase
Put body and inter-chamber tower group is interconnected.
3. the distilling apparatus according to claim 2 for being used to produce furfural, it is characterized in that：According to increase remove organic acid,
The mode of lighter component thing and moisture content connects inter-chamber tower group with distilling apparatus body.
4. the distilling apparatus according to claim 1 for being used to produce furfural, it is characterized in that：Inter-chamber tower group is arranged to include
With the scrubbing tower for removing organic acid（2）First group of inter-chamber tower group, have remove lighter component thing removal of impurities tower（3）Second group
Inter-chamber tower group and the dehydrating tower with removal moisture content（4）The 3rd group of inter-chamber tower group, scrubbing tower（2）Pressure be arranged to normal pressure simultaneously
And scrubbing tower（2）40 ± 1 DEG C of temperature, clean tower（3）Clean tower（3）Pressure be arranged to 51.5-109.5kpa and clean
Tower（3）100-104 DEG C of column bottom temperature, removal of impurities tower（3）81-85 DEG C of tower top temperature, dehydrating tower（4）Pressure be arranged to 14-
29.5kpa and dehydrating tower（4）66.5-70.5 DEG C of column bottom temperature, dehydrating tower（4）50.5-54.5 DEG C of tower top temperature.
5. the distilling apparatus according to claim 1 for being used to produce furfural, it is characterized in that：Also include recovery tower（6）,
Six condensers（61）And feed pump（7）, distilling apparatus body is arranged to also include the first condenser（11）, phase-splitter（12）With
5th condenser（51）、
First group of inter-chamber tower group is arranged to also include the second condenser（21）, second group of inter-chamber tower group be arranged to also include
Three condensers（31）And return tank（32）, the 3rd group of inter-chamber tower group be arranged to also include the 4th condenser（41）,
The output port of furfural raw material flow container is arranged to and topping still（1）Centronics port and topping still（1）Top port
It is arranged to and the first condenser（11）Input port connection, the first condenser（11）Output port be arranged to and phase-splitter
（12）Centronics port connection and phase-splitter（12）Top port be arranged to and topping still（1）Top lateral port connect
It is logical,
Phase-splitter（12）Bottom port be arranged to and scrubbing tower（2）Top lateral port connection and scrubbing tower（2）'s
Top port is arranged to and the second condenser（21）Input port connection, the second condenser（21）Output port be arranged to
Scrubbing tower（2）Top lateral port connection and scrubbing tower（2）Bottom port be arranged to removal of impurities tower（3）Intermediate ends
Mouth connection, scrubbing tower（2）One of lateral port of bottom be arranged to connect with furfural raw material flow container and scrubbing tower（2）
The other in which lateral port of bottom be arranged to connect with technique softened water；
Clean tower（3）Top port be arranged to and the 3rd condenser（31）Input port connection, the 3rd condenser（31）'s
Output port is arranged to pass through return tank（32）With the tower that cleans（3）Top lateral port connection and the tower that cleans（3）Bottom
End port is arranged to pass through feed pump（7）With dehydrating tower（4）Top lateral port connection, clean tower（3）Bottom its
In a lateral port be arranged to connect with furfural raw material flow container；
Dehydrating tower（4）Top port be arranged to and the 4th condenser（41）Input port connection, the 4th condenser（41）'s
Output port is arranged to connect with waste liquid standing tank and dehydrating tower（4）Bottom port be arranged to and treating column（5）Centre
Port connects, dehydrating tower（4）The lateral port of bottom be arranged to connect with furfural raw material flow container,
Treating column（5）Top port be arranged to and the 5th condenser（51）Input port connection, the 5th condenser（51）'s
Output port is arranged to connect with finished product furfural tank and treating column（5）Bottom port be arranged to and recovery tower（6）Centre
Port connects, treating column（5）The lateral port of bottom be arranged to connect with furfural raw material flow container,
Recovery tower（6）Top port be arranged to and the 6th condenser（61）Input port connection, the 6th condenser（61）'s
Output port is arranged to connect with waste liquid standing tank and recovery tower（6）Bottom port be arranged to connect with aldehyde mud tank, recycle
Tower（6）The lateral port of bottom be arranged to connect with furfural raw material flow container,
Topping still（1）Hydrolysis vapour port, scrubbing tower（2）Hydrolysis vapour port, removal of impurities tower（3）Hydrolysis vapour port, dehydrating tower
（4）Hydrolysis vapour port and treating column（5）Hydrolysis vapour port be respectively set to connect with hydrolysis vapour source port and recovery tower
（6）Heating port be arranged to connect with source of water vapor port, the first condenser（11）Recirculated water port, the second condenser
（21）Recirculated water port, the 3rd condenser（31）Recirculated water port, the 4th condenser（41）Recirculated water port, the 5th cold
Condenser（51）Recirculated water port and the 6th condenser（61）Recirculated water port be respectively set to connect with source of recycled water port
And return tank（32）It is arranged to connect with vacuum pump.
6. the distilling apparatus according to claim 5 for being used to produce furfural, it is characterized in that：Topping still（1）Being provided with has
Tower-like body of the vapour for distillation heat source is hydrolyzed,
Or scrubbing tower（2）The tower-like body with washing softening water spray is arranged to,
Or removal of impurities tower（3）The tower-like body with technique softening water spray is arranged to, light group of methanol and acetone etc. is isolated from tower top
Point；
Impurities removal tower（3）Operate under normal pressure, it is ensured that the emptying of condenser is communicated with air；
Impurities removal tower（3）Charging be scrubbing tower（2）The discharging of bottom of towe, impurities removal tower（3）Tower top contains methanol, acetone, water, a small amount of chaff
The light component of aldehyde sum enters return tank after condenser condenses, one material returns to impurities removal tower as reflux gravity flow（3）, it is another
Stock enters light component storage tank as extraction gravity flow；
Or dehydrating tower（4）The tower-like body with vaporising device is arranged to,
Or treating column（5）The tower-like body with vaporising device is arranged to, by being arranged on treating column（5）Bottom discharge outlet and kettle liquid
Pump（55）It is connected, works as treating column（5）After bottoms level reaches technology controlling and process, bottom high-boiling-point impurity is pumped into kettle liquid is crossed（55）It is sent to
Recovery tower（6）,
Or recovery tower（6）The tower-like body with vaporising device is arranged to,
Or topping still（1）Pressure be arranged to 85-120kpa and topping still（1）103-107 DEG C of column bottom temperature, topping still
（1）93-97 DEG C of tower top temperature, treating column（5）Pressure be arranged to 70-198kpa and treating column（5）Column bottom temperature
118-122 DEG C, treating column（5）88-92 DEG C of tower top temperature, recovery tower（6）Pressure be arranged to 101-169kpa and recycle
Tower（6）113-117 DEG C of column bottom temperature, recovery tower（6）98-102 DEG C of tower top temperature.
7. the distilling apparatus according to claim 5 for being used to produce furfural, it is characterized in that：First condenser（11）, second
Condenser（21）, the 3rd condenser（31）, the 4th condenser（41）, the 5th condenser（51）With the 6th condenser（61）Set respectively
It is set to heat exchanger and phase-splitter（12）It is arranged to steam-water separator, return tank（32）It is arranged to sealing tank-like body.
8. the distilling apparatus according to claim 5 for being used to produce furfural, it is characterized in that：Topping still（1）And treating column（5）
With scrubbing tower（2）, removal of impurities tower（3）And dehydrating tower（4）It is arranged to be distributed and treating column in the way of triple effect distillation removal of impurities（5）
With recovery tower（6）It is arranged to be distributed in the way of evaporating and recycling, a topping still（1）, first condenser（11）With one
A phase-splitter（12）It is arranged to one group of composition and slightly evaporates component and a treating column（5）With the 5th condenser（51）It is arranged to
Form one group of rectifying component, a recovery tower（6）With the 6th condenser（61）Be arranged to composition one group of recovery part and
One scrubbing tower（2）, second condenser（21）, a removal of impurities tower（3）, the 3rd condenser（31）, a return tank
（32）, a dehydrating tower（4）, the 4th condenser（41）, a treating column（5）With the 5th condenser（51）It is arranged to
Form one group of triple effect distillation removal of impurities component.
9. a kind of distillating method for being used to produce furfural, its step are：By topping still（1）, to the furfural raw material that concentration is 4-6%
Liquid carries out being processed into the furfural liquid that concentration is 85-88%, by scrubbing tower（2）, organic acid treatment is removed to furfural liquid, by except
Miscellaneous tower（3）, the processing of lighter component thing is removed to furfural liquid, by dehydrating tower（4）, moisture content processing is removed to furfural liquid, by
Treating column（5）, heavy component thing processing finished product furfural is removed to furfural liquid.
10. the distillating method according to claim 5 for being used to produce furfural, it is characterized in that：Its step is：
Concentration is that the furfural material liquid of 4-6% enters topping still（1）In, keep topping still（1）Pressure is arranged to 85-120kpa simultaneously
And topping still（1）103-107 DEG C of column bottom temperature, topping still（1）93-97 DEG C of tower top temperature, topping still（1）Top end
The furfural material liquid of mouth output vaporization passes through the first condenser（11）Cooling and phase-splitter（12）Moisture content separation, forming concentration is
The furfural liquid of 85-88% and it is transported to scrubbing tower（2）In, keep scrubbing tower（2）Pressure be arranged to normal pressure and scrubbing tower
（2）40 ± 1 DEG C of temperature, washing is carried out by technique softened water and removes organic acid treatment, forms acidity≤0.008mol/L's
Furfural liquid and it is transported to removal of impurities tower（3）In, keep removal of impurities tower（3）Pressure be arranged to 51.5-109.5kpa and the tower that cleans
（3）100-104 DEG C of column bottom temperature, removal of impurities tower（3）81-85 DEG C of tower top temperature, by technique softened water carry out carrying out washing treatment,
The processing of lighter component thing is removed to the furfural liquid of acidity≤0.008mol/L, middle furfural liquid I is formed and is transported to dehydration
Tower（4）, keep dehydrating tower（4）Pressure be arranged to 14-29.5kpa and dehydrating tower（4）66.5-70.5 DEG C of column bottom temperature,
Dehydrating tower（4）50.5-54.5 DEG C of tower top temperature, be removed moisture content to middle furfural liquid I, formed moisture reach≤
0.05% middle furfural liquid II and it is transported to treating column（5）, keep treating column（5）Pressure be arranged to 70-198kpa and
Treating column（5）118-122 DEG C of column bottom temperature, treating column（5）88-92 DEG C of tower top temperature, middle furfural liquid II is gone
Except the processing of heavy component thing, treating column（5）Top port output vaporization furfural liquid pass through the 5th condenser（51）Cooling obtains
Finished product furfural, treating column（5）Bottom port output recycling aldehyde liquid be input to recovery tower（6）, keep recovery tower（6）Pressure
It is arranged to 101-169kpa and recovery tower（6）113-117 DEG C of column bottom temperature, recovery tower（6）98-102 DEG C of tower top temperature,
Recovery tower（6）Bottom lateral port obtain residual furfural,
Second condenser（21）And phase-splitter（12）To scrubbing tower（2）Chaff aldehyde a part reflux, the 3rd condenser（31）With
Return tank（32）To the tower that cleans（3）Chaff aldehyde a part reflux and increase reflux power, the 4th condenser（41）To dehydrating tower
（4）Chaff aldehyde waste liquid output, the 6th condenser（61）To recovery tower（6）Chaff aldehyde waste liquid output.
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| CN201711032535.7A CN107954957A (en) | 2017-10-30 | 2017-10-30 | For producing the distilling apparatus and method of furfural |
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| CN201711032535.7A CN107954957A (en) | 2017-10-30 | 2017-10-30 | For producing the distilling apparatus and method of furfural |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114632485A (en) * | 2022-03-18 | 2022-06-17 | 宁津春蕾生物科技有限公司 | High-purification-rate furfural rectification equipment and rectification method thereof |
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| CN102675265A (en) * | 2012-05-31 | 2012-09-19 | 天津大学 | Method of refining furfural through six-tower continuous rectification |
| CN104130224A (en) * | 2014-08-14 | 2014-11-05 | 河北中科智联节能科技股份公司 | Six-tower type continuous refining device for furfural production and furfural refining process thereof |
| CN204058311U (en) * | 2014-08-14 | 2014-12-31 | 河北中科智联节能科技股份公司 | The tower continuous treater of furfural production six |
| CN105330624A (en) * | 2015-11-24 | 2016-02-17 | 肥城金威机械有限公司 | Furfural refining device and method based on avoidance of neutralization reaction |
| CN105524031A (en) * | 2016-01-07 | 2016-04-27 | 唐山宏文有机肥料有限公司 | Process and apparatus for four-tower continuous refining of furfural |
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| CN102675265A (en) * | 2012-05-31 | 2012-09-19 | 天津大学 | Method of refining furfural through six-tower continuous rectification |
| CN104130224A (en) * | 2014-08-14 | 2014-11-05 | 河北中科智联节能科技股份公司 | Six-tower type continuous refining device for furfural production and furfural refining process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114632485A (en) * | 2022-03-18 | 2022-06-17 | 宁津春蕾生物科技有限公司 | High-purification-rate furfural rectification equipment and rectification method thereof |
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Address after: 271600 hi tech Industrial Development Zone, Tai'an, Shandong, Feicheng Applicant after: Shandong Jinta Machinery Group Co., Ltd Address before: 271600, No. 71 Kang Hui Street, hi tech Development Zone, Tai'an, Shandong, Feicheng Applicant before: FEICHENG PYRAMID MACHINERY Co.,Ltd. |