CN109276910A - A kind of continuous back extraction system - Google Patents
A kind of continuous back extraction system Download PDFInfo
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- CN109276910A CN109276910A CN201811258089.6A CN201811258089A CN109276910A CN 109276910 A CN109276910 A CN 109276910A CN 201811258089 A CN201811258089 A CN 201811258089A CN 109276910 A CN109276910 A CN 109276910A
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- Prior art keywords
- back extraction
- mixing arrangement
- collection device
- continuous
- color oil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
- B01D11/0488—Flow sheets
Abstract
The present invention provides a kind of continuous back extraction (back extraction) system, fluidly connects with an extracting system.The continuous back extraction system includes: a back extraction mixing arrangement, and the back extraction mixing arrangement is fluidly connected with the extracting system, for receiving the color oil of the extracting system discharge；One separator, the separator are fluidly connected with the back extraction mixing arrangement, a dyestuff collection device and an absolute oil collection device respectively；And one back extraction agent storage device, tell back extraction agent storage device fluidly connected with the back extraction mixing arrangement, be used for the back extraction mixing arrangement offer stripping agent.
Description
Technical field
The present invention relates to a kind for the treatment of of dyeing wastewater fields, and in particular to used in during the residual bath decoloration reuse of dyeing
A kind of continuous back extraction system.
Background technique
Reactive dye are that cotton dyeing is the most frequently used because its is bright-colored, fastness is good, the characteristics such as cheap, easy to use
Dyestuff.But in dyeing course, reactive dye always have the dyestuff of considerable part (about 30%) that can hydrolyze.In order to make hydrolysis
Dyestuff is easy to remove after dye, and prevent from attaching influences dyefastness on cotton fiber, and the molecular structure of reactive dye is designed to
It is lower for the affinity to cotton fiber.This molecular structure makes the reactive dye adsorbance of fiber to dyestuff in dyeing course
It reduces, influences the service efficiency of dyestuff.
In order to enable reactive dye are effectively upper to contaminate cotton fiber, must be added in dyeing working fluid a large amount of salt with into
Row promotees dye.In general, the salt content in working solution may be up to 100 grams per liters, this has been resulted in the residual bath after dyeing not only containing big
The hydrolised dye of amount keeps the color of dyeing waste-water profound, also contains high salinity (sodium sulphate or sodium chloride).In this field
In, this extremely difficult processing of sewage, conventional biochemical treatment is difficult to then generate color removal a large amount of dirty with flocculence decoloration
Mud, highly concentrated salt there is no good method to slough, and cause serious pollution to environment.
For the dyeing waste-water of above-mentioned high dyestuff with high salt, adoptable processing mode has decoloration reuse, that is, uses extractant
(using trioctylamine as the oil liquid of main component) is effectively decolourized to residual bath is dyed, so that the high level salt solution in residual bath be enable to return
With.This processing mode can dramatically reduce reactive dye and be made to the dyeing of cotton products to avoid the discharge of high level salt solution
The salt pollution of pairs of environment.But decolorization can generate extractant largely containing dyestuff, become color oil.
Therefore, it is necessary to which a back extraction system is arranged, color oil is made to decolourize through base extraction, i.e., so that extractant containing dyestuff passes through
Stripping process sloughs dyestuff resurrection, big so as to just can effectively prevent so that extractant can be re-used in decolorization
Environmental pollution and high processing cost caused by salt discharge are measured, the extraction decoloration reuse method of the residual bath of reactive dyeing is made
Feasibility with practical application.
About the extraction decolorization of Dyeing of Cotton Fabric with Reactive Dyes, Chinese patent application CN107021538A provides a kind of " work
Property dyeing raffinate efficient extraction decoloration system ", be carried out using tubular membrane extraction and stripping process in grease
Separation, therefore, which can be carried out continuously, and be a kind of extraction of continous way and back extraction system.However, in the decoloration system,
Decline the flow of processing since tubular membrane usually will appear film blocking in use, often rinsing could restore.
Therefore, the system is although may be implemented continuous processing, because needing often to rinse tubular membrane, so that treating capacity is undesirable and is
Maintenance cost of uniting is excessively high, it is difficult to widely apply in the industrial production.
For the above technical problems, it would be desirable to which a kind of new back extraction device may be implemented to the continuous of color oil
It efficiently separates.
Summary of the invention
To solve the deficiencies in the prior art, present invention firstly provides a kind of continuous back extraction systems, with an extracting system fluid
Connection.The continuous back extraction system includes: a back extraction mixing arrangement, and the back extraction mixing arrangement and the extracting system fluid connect
It connects, for receiving the color oil of the extracting system discharge；One separator, the separator mix dress with the back extraction respectively
It sets, a dyestuff collection device and an absolute oil collection device fluidly connect；And a back extraction agent storage device, told stripping agent store up
Cryopreservation device is fluidly connected with the back extraction mixing arrangement, for providing stripping agent to the back extraction mixing arrangement.
In an embodiment of the present invention, it is arranged at least on the connecting line of the back extraction mixing arrangement and the separator
One filter.
In an embodiment of the present invention, the continuous back extraction system further includes oily collection device of the same colour, and the color oil is collected
Device is fluidly connected with the back extraction mixing arrangement；The color oil of the extracting system discharge enters in the color oil collection device,
And then the back extraction mixing arrangement is entered by the color oil collection device.
In an embodiment of the present invention, the color oil collection device mixes dress in the back extraction with the back extraction mixing arrangement
It is fluidly connected at the close bottom set.
In an embodiment of the present invention, the back extraction agent storage device is mixed with the back extraction mixing arrangement in the back extraction
It is fluidly connected at the close bottom of device.
In an embodiment of the present invention, the connecting line of the back extraction mixing arrangement and the extracting system is equipped with one the
The connecting line of one metering pump, the back extraction mixing arrangement and the back extraction agent storage device is equipped with one second metering pump.
In an embodiment of the present invention, one first liquid-level switch is set in the back extraction mixing arrangement, and described anti-
Extract one pump of setting, the pump on the connecting line of mixing arrangement and the separator to connect with a power supply and by first liquid
Bit switch control opening and closing.
In an embodiment of the present invention, one second liquid-level switch is set in the color oil collection device, and described
The connecting line of color oil collection device and the back extraction mixing arrangement is equipped with a solenoid valve, and the solenoid valve is connect with a power supply
And it is controlled and is opened and closed by second liquid-level switch.
In an embodiment of the present invention, the separator is a centrifuge.
In an embodiment of the present invention, the revolving speed of the centrifuge is 20~50 revs/min.
It will be appreciated by persons skilled in the art that in order to control the storage upper limit value of color oil in the color oil collection device
And lower limit value, upper and lower liquid-level switch is equipped in the color oil collection device, for controlling being discharged into and being discharged for color oil.
In the present invention, it is characteristic of the invention that cooperating the rational design of other assemblies using centrifuge as separator, uses
To separate the extractant (that is, color is oily) for dyeing load caused by residual bath and having dyestuff, make the extractant containing color for having extracted dyestuff
Color can be fast and efficiently removed, restores decoloring ability, to be back to new round decolorization.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of continuous back extraction system according to an embodiment of the invention.
Specific embodiment
The present invention is described in detail with reference to embodiments, embodiment is intended to explain technology rather than limiting the invention
Scheme.
In the present embodiment, a kind of continuous back extraction system 100 is provided, the structure of the continuous back extraction system 100 please be detailed in
Fig. 1.
As shown in Figure 1, the continuous back extraction system 100 includes back extraction a mixing arrangement 110,120 and of a separator
One back extraction agent storage device 130.
In the present embodiment, using lye as stripping agent, thus lye is stored in the back extraction agent storage device 130
And lye is provided to the back extraction mixing arrangement 110.
As shown in the figure, the back extraction mixing arrangement 110 is connected by pipeline oily collection device 140 of the same colour.The color oil
Collection device 140 is connect with an existing extracting system, for collecting the color oil of the extracting system discharge.The extracting system
For, for the system to the residual bath decoloration of dyeing, the color oil is at the residual bath decoloration of dyeing that the extracting system carries out in this field
The extractant containing dyestuff obtained during reason.Continuous back extraction system 100 described in the present embodiment contains the extraction of dyestuff to this
It takes agent (that is, color is oily) to carry out back extraction processing, the dyestuff in color oil is separated with extractant, so that extractant can be with reuse
Into the residual bath decolorization of dyeing.
It is of course also possible to be not provided with the color oil collection device 140, and make the back extraction mixing arrangement 110 directly and institute
The color oil outlet for stating extracting system fluidly connects.
As shown in the figure, the lye in color oil and the back extraction agent storage device 130 in the color oil collection device 140
Entered in the back extraction mixing arrangement 110 by pipeline respectively.For the abundant reaction for realizing back extraction, the color oil collection device
140 and it is described back extraction agent storage device 130 with it is described back extraction mixing arrangement 110 it is described back extraction mixing arrangement close bottom
It is connected at portion, as shown in the figure.
For control it is described back extraction mixing arrangement 110 in the color oil and the back extraction reacting dose, as shown in the figure,
The connecting line of the back extraction mixing arrangement 110 and the color oil collection device 140 is equipped with one first metering pump 111, in institute
The connecting line for stating back extraction mixing arrangement 110 and the back extraction agent storage device 130 is equipped with one second metering pump 131.
Certainly, it in the continuous back extraction system 100 for being not provided with the color oil collection device 140, mixes and fills in the back extraction
It sets and first metering pump 111 is set i.e. on the pipeline that 110 directly fluidly connect with the color oil outlet of the extracting system
It can.
In a preferred embodiment, by first metering pump 111 and second metering pump 131, control enters institute
The volume ratio range of the color oil and the back extraction of stating back extraction mixing arrangement 110 is (0.5~5): 1.
In the present embodiment, as shown in the figure, one first liquid-level switch 112 is set in the back extraction mixing arrangement 110,
And one pump 113 of setting on the connecting line of the back extraction mixing arrangement 110 and the separator 120, the pump 113
It connect with a power supply (not shown) and is controlled by first liquid-level switch 112 and opened and closed.First liquid-level switch 112 with
113 one level control of formation are pumped, when the mixed liquor of color oil and stripping agent in the back extraction mixing arrangement 110 reaches described the
When at one liquid-level switch 112, the pump 113 is opened, and mixed liquor is sent into the separator 120 and is separated.
First liquid-level switch 112 with to pump 113 to be formed by level control be techniques known in the art, such as but
It is not limited to
In the present embodiment, the mixed liquor of color oil and stripping agent overflows the back extraction mixing arrangement 110 in order to prevent, in institute
It states and also sets up one second liquid-level switch 114 in back extraction mixing arrangement 110, and in the back extraction mixing arrangement 110 and described point
One pump 113 of setting on connecting line from device 120,
One first electromagnetism is equipped on the connecting line of the back extraction mixing arrangement 110 and the color oil collection device 140
Valve 115 is equipped with one second electromagnetism on the connecting line of the back extraction mixing arrangement 110 and the back extraction agent storage device 130
Valve 132.First solenoid valve 115 and the second solenoid valve 132 connect with a power supply (power supply can be with it is described
Pump 113 is same power supply or different electrical power, is arranged according to actual needs) so that first solenoid valve 115 and described the
Two solenoid valves 132 are controlled by second liquid-level switch 114 and are opened and closed.When the color oil in the extraction mixing arrangement 110 and it is stripped
When the mixed liquor of agent reaches second liquid-level switch 114, first solenoid valve 115 and the second solenoid valve 132 are closed,
Mixed liquor is avoided to overflow the back extraction mixing arrangement 110.Second liquid-level switch 114 and first solenoid valve 115/ the
The level control formed before two solenoid valves 132 is techniques known in the art, such as, but not limited to capacitor hydraulic switch, floating
Ball-type liquid-level switch, electronic type liquid-level switch, pressure type liquid level switch etc..
Further, similarly there is level control in the color oil collection device 140, as shown in the figure, described
A third liquid-level switch 141, one the 4th liquid-level switch 142 and one the 5th liquid-level switch are provided in color oil collection device 140
143.Wherein, the third liquid-level switch 141 controls the opening and closing of first solenoid valve 115, when the color oil collection device 140
When interior color oil reaches the third liquid-level switch 141, first solenoid valve 115 is opened, with to the back extraction mixing arrangement
Conveying color oil in 110.4th liquid-level switch 142 is liquid level high position control switch, i.e., when the color oil collection device 140
When interior color oil reaches four liquid-level switch 142, stop conveying color from extracting system to the color oil collection device 140
Oil.5th liquid-level switch 143 is then an oil-water interface control device, is a kind of Double position control switch, since the color oil is received
Color oil in acquisition means 140 contains a certain amount of water, thus, color oil a period of time after entering the color oil collection device 140
Afterwards, moisture understands natural sedimentation to the bottom of the color oil collection device 140.When oil-water interfaces reach the 5th liquid-level switch
After 143, the valve 144 in the discharge outlet of 140 bottom of color oil collection device is opened so that moisture is discharged；And work as grease circle
When face is lower than five liquid-level switch 143, then valve 144 is closed.5th liquid-level switch 143 is skill known in the art
Art, such as, but not limited to oil-water interfaces switch.
As shown in the figure, it is equipped with agitating device in the back extraction mixing arrangement 110, mixes color oil with stripping agent
It is even, then it is pumped into the separator 120 by the pump 113.The separator 120 can be a centrifuge, it is described from
The revolving speed of scheming is 20~50 revs/min.In the separator 120, stripping agent by color oil in dyestuff and extractant solution
Analysis, and separated by the separator 120.As shown in the figure, the separator 120 is collected by a pipeline and a dyestuff and is filled
150 are set to fluidly connect, so that in the dyestuff centralized collection separated to the dyestuff collection device 150, to carry out subsequent place
Reason or reuse.And the extractant that the separator 120 is separated then passes through another pipeline into an absolute oil collection device
160, for storing extractant.
As shown in the figure, in a preferred embodiment, the absolute oil collection device 160 and the color oil collection device 140
With similar level control.As shown in the figure, one the 6th liquid-level switch 161, one is equipped in the absolute oil collection device 160
7th liquid-level switch 162 and one the 8th liquid-level switch 163, wherein the 6th liquid-level switch 161 control extractant outlet
Opening and closing, when the extractant in the absolute oil collection device 160 reaches six liquid-level switch 161, extractant outlet is opened
It opens so that extractant is discharged.The extractant of discharge can reuse to dye it is residual bath decoloration extracting system in.7th liquid-level switch
162 be liquid level high position control switch, i.e., when the extractant in the absolute oil collection device 160 reaches the 7th liquid-level switch
When 162, close the separator 120 and the valve 121 on 160 connecting line of absolute oil collection device, thus stop from
The separator 120 conveys extractant to the absolute oil collection device 160.
8th liquid-level switch 163 is then an oil-water interface control device, is a kind of Double position control switch.It is similar to color oil
, a certain amount of water is also contained in the extractant after being stripped, thus, extractant is after entering the absolute oil collection device 160
After a period of time, moisture meeting natural sedimentation to the bottom of the absolute oil collection device 160.When oil-water interfaces reach the 8th liquid
After bit switch 163, the valve 164 in the discharge outlet of 160 bottom of absolute oil collection device is opened so that moisture is discharged；And work as
When oil-water interfaces are lower than eight liquid-level switch 163, then valve 164 is closed.8th liquid-level switch 163 be this field
The technology known, such as, but not limited to oil-water interfaces switch.
The residual bath decolorization of Application Example reactive dyeing
Reactive dye are the most frequently used dyestuffs of cotton fabric coloring.Reactive dye need increasing amount during contaminating cotton
Salt and considerable amount of alkali, after the completion of dyeing, dye in residual bath containing hydrolysed reactive dye be additional amount 30~50%, liquid
Middle chromatic value is up to tens of thousands of.Existing sewage water treatment method is difficult to handle to coloration sewage high in this way, often needs investment a large amount of
Flocculant remove the color in water, thus produce a large amount of solid wastes.
It is extracted with the color oil that an existing extracting system dyes after residual bath extraction, wherein be 20000 times to coloration
The residual bath of dyeing, extractant is formed with the ratio of 6:2:1 with diesel oil, octanol and three pungent ammonia and carries out extraction decoloration, controls grease
Ratio is 1:30, and coloration is 50 in the water after decoloration.
Color oil is transported to the color oil collection device 140 after extraction decoloration by above-mentioned extracting system.The color oil is collected
The diameter of device 140 is 1.3 meters, 2 meters of height.Subsequent color oil passes through first metering pump 111 and second metering pump 131
Control, into the back extraction mixing arrangement 110, into the color oil in the back extraction mixing arrangement 110 and described anti-
The volume ratio range for extracting agent is (0.5~5): 1, in the present embodiment, the volume ratio of the color oil and the stripping agent is 1:1.
A kind of example as stripping agent is lye, i.e. NaOH aqueous solution, concentration 5-50g/L.It is mixed in the back extraction
In device 11-, color oil and stripping agent enter separator after stirring in 20 minutes, by the pump 113 after the filter 116
150.The separator 50 separates mixed liquor with 35 revs/min, isolates water phase (highly concentrated dye solution) and oily phase
(extractant after de- dyestuff) respectively enters the dyestuff collection device 150 and absolute oil collection device 160.Highly concentrated dye solution can
To send subsequent harmless treatment, and the extractant after de- dyestuff can be used for decoloration of the new round to residual bath is dyed.
In the present invention, it is characteristic of the invention that cooperating the rational design of other assemblies using centrifuge as separator, uses
To separate the extractant (that is, color is oily) for dyeing load caused by residual bath and having dyestuff, make the extractant containing color for having extracted dyestuff
Color can be fast and efficiently removed, restores decoloring ability, to be back to new round decolorization.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, without departing from the inventive concept of the premise, can also make several changes, improvements and modifications, these change, improve and moisten
Decorations also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of continuous back extraction system, fluidly connects with an extracting system, which is characterized in that the continuous back extraction system includes:
One back extraction mixing arrangement, the back extraction mixing arrangement are fluidly connected with the extracting system, for receiving the extraction system
The color being discharged of uniting is oily；
One separator, the separator are collected with the back extraction mixing arrangement, a dyestuff collection device and an absolute oil respectively
Device fluidly connects；And
One back extraction agent storage device, the back extraction agent storage device are fluidly connected with the back extraction mixing arrangement, are used for described
It is stripped mixing arrangement and stripping agent is provided.
2. continuous back extraction system as described in claim 1, which is characterized in that the back extraction mixing arrangement and the separator
Connecting line on an at least filter is set.
3. continuous back extraction system as described in claim 1, which is characterized in that the continuous back extraction system further includes that oil of the same colour is received
Acquisition means, the color oil collection device are fluidly connected with the back extraction mixing arrangement；The color oil of the extracting system discharge enters
In the color oil collection device, and then the back extraction mixing arrangement is entered by the color oil collection device.
4. continuous back extraction system as described in claim 1, which is characterized in that the color oil collection device is mixed with the back extraction
Device fluidly connects at the close bottom of the back extraction mixing arrangement.
5. continuous back extraction system as claimed in claim 4, which is characterized in that the back extraction agent storage device and the back extraction are mixed
It attaches together to set and be fluidly connected at the close bottom of the back extraction mixing arrangement.
6. continuous back extraction system as described in claim 1, which is characterized in that the back extraction mixing arrangement and the extracting system
Connecting line be equipped with one first metering pump, it is described back extraction mixing arrangement and it is described back extraction agent storage device connecting line on
Equipped with one second metering pump.
7. continuous back extraction system as described in claim 1, which is characterized in that one first liquid is arranged in the back extraction mixing arrangement
Bit switch, and one pump of setting on the connecting line of the back extraction mixing arrangement and the separator, the pump and an electricity
Source connection simultaneously controls opening and closing by first liquid-level switch.
8. continuous back extraction system as claimed in claim 3, which is characterized in that one second is arranged in the color oil collection device
Liquid-level switch, and a solenoid valve, institute are equipped on the connecting line of the color oil collection device and the back extraction mixing arrangement
Solenoid valve is stated to connect with a power supply and control opening and closing by second liquid-level switch.
9. continuous back extraction system as described in claim 1, which is characterized in that the separator is a centrifuge.
10. continuous back extraction system as claimed in claim 9, which is characterized in that the revolving speed of the centrifuge is 20~50 revs/min
Clock.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811258089.6A CN109276910A (en) | 2018-10-26 | 2018-10-26 | A kind of continuous back extraction system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811258089.6A CN109276910A (en) | 2018-10-26 | 2018-10-26 | A kind of continuous back extraction system |
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| CN109276910A true CN109276910A (en) | 2019-01-29 |
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| CN201811258089.6A Pending CN109276910A (en) | 2018-10-26 | 2018-10-26 | A kind of continuous back extraction system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110627260A (en) * | 2019-10-25 | 2019-12-31 | 新疆神邦环境工程有限公司 | Dyeing raffinate salt recycling system |
| CN112190976A (en) * | 2020-09-01 | 2021-01-08 | 合肥通用机械研究院有限公司 | One-key type extraction system and extraction method |
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| CN107399781A (en) * | 2017-08-18 | 2017-11-28 | 新疆如意纺织服装有限公司 | Reactive dyeing raffinate recovery system and recovery method |
| CN207031016U (en) * | 2017-08-03 | 2018-02-23 | 科海思（北京）科技有限公司 | The processing unit and production system of H acid and/or T acid producing waste waters |
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| EP0331783A1 (en) * | 1988-03-10 | 1989-09-13 | Deldunantuli Vizugyi Igazgatosag | Process and apparatus for decoloring and/or neutralising alkaline waste waters and for decreasing their salt content, particularly for purifying effluents from the textile industry |
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| CN107337246A (en) * | 2017-08-18 | 2017-11-10 | 新疆如意纺织服装有限公司 | Reactive dyeing raffinate recovery system and recovery method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110627260A (en) * | 2019-10-25 | 2019-12-31 | 新疆神邦环境工程有限公司 | Dyeing raffinate salt recycling system |
| CN112190976A (en) * | 2020-09-01 | 2021-01-08 | 合肥通用机械研究院有限公司 | One-key type extraction system and extraction method |
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