CN201840908U - Extraction plant for recovering dimethylformamide from synthetic leather production wastewater - Google Patents
Extraction plant for recovering dimethylformamide from synthetic leather production wastewater Download PDFInfo
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- CN201840908U CN201840908U CN2010205724083U CN201020572408U CN201840908U CN 201840908 U CN201840908 U CN 201840908U CN 2010205724083 U CN2010205724083 U CN 2010205724083U CN 201020572408 U CN201020572408 U CN 201020572408U CN 201840908 U CN201840908 U CN 201840908U
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Abstract
The utility model relates to an extraction plant for recovering dimethylformamide (DMF) from synthetic leather production wastewater, which comprises a lower settling section, an upper settling section, an effective section which is arranged between the lower settling section and the upper settling section, and a driving device. A light-phase inlet distributor and a heavy-phase outlet are arranged at the upper part of the lower settling section. A heavy-phase inlet distributor and a light-phase outlet are arranged at the lower part of the upper settling section. A plurality of tower trays, an agitating shaft and a plurality of turbine blades are arranged in the effective section, wherein the tower trays are respectively provided with an opening in the center and are arranged in the effective section at intervals, the agitating shaft is fixed on the axis of the effective section, and the turbine blades are installed on the agitating shaft at intervals. The driving device is arranged at the top of the upper settling section and is connected with the agitating shaft. The extraction plant is a turbine extraction tower in fact, the extraction efficiency is high and the content of the DMF in the wastewater can be decreased to less than one percent.
Description
Technical field
The utility model relates to a kind of extraction equipment that is used for reclaiming from synthetic leather waste water dimethyl formamide (DMF), particularly relates to the extraction-rectification technology and is used for the turbine stirring extraction tower that synthetic leather waste water reclaims DMF, belongs to the liquid-liquid technique field.
Background technology
DMF is a kind of chemical industry solvent commonly used, is widely used in Synthetic Leather industry.Because chemical reaction does not only take place as carrier solvent in DMF, and all enters waste water.Annual only synthetic leather industry discharging contain about 100,000,000 tons of DMF waste water.The waste water that contains DMF of China's synthetic leather factory discharging at present, its DMF concentration is generally between 10～25%.Because the DMF price is more expensive, toxicity is bigger, for reducing production costs and reducing pollution to water quality and environment, reclaims DMF and just seem extremely important from synthetic leather waste water.
The DMF chemical property is stable, and the difficulty biodegradation produces inhibitory action to the biological wastewater treatment process, influences treatment effect.From leather waste water, reclaim DMF at present and adopt direct distillation substantially, owing to will evaporate 75%～90% moisture, need to consume a large amount of energy consumptions, hydrolysis can take place in DMF in still-process simultaneously, produce nauseating bad odor, personnel and surrounding enviroment are impacted.Many researchers have carried out a large amount of research to this technology, have proposed single tower, double tower, three towers, even the recovery technology of five towers, and intention is from increasing the angle of equipment investment, to reduce the excessive problem of energy consumption.But the way of distillation still will be sloughed moisture to reclaim DMF with the method for distillation after all from a large amount of waste water.Every processing 10m
3Waste water promptly consumes about 1.3～1.5 tons of coal.Even make full use of the energy in the process, still exist energy consumption excessive, the problem that enterprise's cost recovery is too high.
Chinese patent publication number CN 1793111A discloses " recovery method of dimethyl formamide in a kind of waste water ".This method is reclaimed DMF in the waste water with DMF waste water by extraction-rectification.This method comprises extraction and two operations of rectifying.At first adopt organic solvent extraction, the dimethyl formamide in the aqueous solution is transferred in the organic solvent, and then realize separating of dimethyl formamide and organic solvent by rectifying.In the method, extraction process equipment adopts packed extraction tower.Packed extraction tower belongs to separation unit operation equipment, and in the liquid-liquid extraction field, packed extraction tower generally is applied to use under the not high situation of mass transfer separation requirement.The extraction-rectification technology also is not used in the industrialized unit that reclaims DMF from DMF waste water at present, and its main cause is that present packed extraction tower still can not reach the desired rate of recovery.
The utility model content
The purpose of this utility model is to provide a kind of extraction equipment that is used for the extraction-rectification technology from synthetic leather waste water recovery DMF, to improve extraction efficiency effectively.
For this reason, a kind of extraction equipment that is used for reclaiming from synthetic leather waste water dimethyl formamide that the utility model proposed comprises following settling section, last settling section, effective section and transmission device between following settling section and last settling section.Following settling section top is provided with a light phase import distributor and a heavy out.Last settling section bottom is provided with a heavy phase import distributor and a light phase export.Should be provided with a plurality of column plates, a shaft and a plurality of turbine oar in effective section, a plurality of column plate central openings are located in this effective section at interval, and this shaft is fixed on the axis of this effective section, and a plurality of turbine oars are installed on this shaft at interval.Transmission device is arranged on the settling section top, and connects this shaft.
In above-mentioned extraction equipment, this time settling section top is provided with calm layer and silk screen layer.
In above-mentioned extraction equipment, settling section bottom is provided with calm layer on this.
In above-mentioned extraction equipment, settling section or this time settling section are provided with interface of the level gauge, blowdown interface and visor on this.
In above-mentioned extraction equipment, this calm layer is the grid grid that a bonding jumper is made.
In above-mentioned extraction equipment, around perforate, be provided with a plurality of circular holes on described a plurality of column plates.
In above-mentioned extraction equipment, each described turbine oar is between two adjacent tray.
In above-mentioned extraction equipment, this light phase import distributor and this heavy phase import distributor are the pipe that is provided with the distribution hole.
Of the present utility model being used for constituted a turbine extraction tower from the extraction equipment of synthetic leather waste water recovery dimethyl formamide, and compared with prior art, its advantage is as follows:
1. turbine extraction tower extraction efficiency height can drop to below 1% the DMF content in the waste water.Because the specific flow pattern that the turbine stirring form is had, the stage efficiency height of extraction tower reaches 0.23～0.58 theoretical plate/level.
2. the turbine extraction tower is simple in structure, and is easy for installation.The tower internals of turbine extraction tower is column plate and turbine oar, and handling ease is easy to assembly.
3. the turbine extraction tower is easy to operate.Operation is simple for the turbine extraction tower, can realize control automatically.
4. turbine extraction tower treating capacity is big.The flux of turbine extraction tower can be from 19m
3/ (m
2H)～40m
3/ (m
2And can handle the material that contains molecule h).
5. turbine extraction tower adaptability is strong.The turbine extraction tower can adapt to compares big system, also can adapt to the requirement of different disposal amount in suitable scope.
Description of drawings
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated, wherein:
Fig. 1 is the extraction tower shape assumption diagram of the utility model one embodiment.
Fig. 2 is the column plate schematic diagram of the utility model one embodiment.
Fig. 3 is the turbine oar schematic diagram of the utility model one embodiment.
The specific embodiment
Following embodiment of the present utility model describes a kind of extraction-rectification technology reclaims DMF from synthetic leather waste water extraction equipment that is used for.This extraction equipment is essentially a turbine stirring extraction tower.
Fig. 1 is the shape assumption diagram of the utility model one embodiment.With reference to shown in Figure 1, extraction tower comprises that settling section 1, effective section 2 reach and go up settling section 3 down, and the transmission device 4 that is arranged on the settling section top.
The cylindrical tube below of following settling section 1 is an ellipsoidal head, can also be pyramidal structure, first-selected ellipsoidal head.Be provided with light phase import distributor 11 and heavy out 14 in the following settling section 1.
Being an ellipse head above the cylindrical tube of last settling section 3, can also be slab construction, first-selected ellipse head.In last settling section, be provided with light phase export 35 and heavy phase import distributor 37.
Difference according to decentralized photo is selected is provided with interface of the level gauge 32 at the boundary place of last settling section 3, to observe or installation interface controller usefulness.Near the boundary place, be provided with blowdown connection 36, and be provided with visor 38 and be convenient to observe.Last settling section 3 also is provided with blow-down pipe interface 33.
In other embodiments, if adopt different materials, can in the settling section 1 above-mentioned interface of the level gauge, blowdown interface and visor be set down as continuous phase.
In one embodiment, in following settling section 1,, be provided with calm layer 13 and metal or the nonmetal silk screen of being convenient to the drop coalescence, the perhaps silk screen 12 of metal and nonmetal shuffling of eliminating the liquid eddy flow in order to obtain to be separated or the effect of droplet settling.Similarly, in last settling section 3, be provided with the calm layer 31 of eliminating the liquid eddy flow.Can certainly these auxiliary equipments be set according to the feature of system in settling section.
Effectively section 2 is meant the tower body that column plate 21 and turbine oar 22 are housed.With reference to shown in Figure 2, column plate 21 is the ring-type plectane of perforate 21a in the middle of, and side has the circular hole of some around the perforate within it, and its percent opening is 20%～60%.Column plate 21 fixing in tower can adopt and be shelved on welding and be positioned on the support of tower body inwall, and also available tube connector and distance sink tube are together in series and are fixed on the column plate between two flanges.The number of plates can have different plate numbers according to the requirement of piece-rate system.
The structure of turbine oar 22 is with reference to shown in Figure 3, is that the former 45 by a circle is embedded on the turbine case 44, and five equilibrium inserts the rectangular paddle 41 of same size on the circumference of former 45, in being made up of 2 annular cover plates 42 up and down of blade.6～8 of the quantity of rectangular paddle 41 do not wait.The turbine case 44 of turbine oar 22 is installed on the shaft 23, and all turbine oars 22 effectively are being installed on the shaft 23 by equidistant in the section.Pack in the tower body effective section of the shaft 23 that turbine oar 22 is housed and column plate 21.Shaft 23 is vertically fixed on effective section the axis, and connects transmission device 4.
The course of work of the turbine stirring extraction tower of the utility model embodiment is described below with reference to Fig. 1.
With the waste water that contains DMF is continuous phase (light phase), and solvent is decentralized photo (heavy phase).Light phase import distributor 11 under extraction tower the settling section 1 enters in the tower, starts transmission device 4, and rotating speed is fixed on the certain numerical value place.When treating gently to be close the Interface Control position, solvent (heavy phase) heavy phase import distributor 37 the settling section 3 from extraction tower is entered in the tower, two phase flow is controlled at a fixed value place.Because two-phase density of liquid difference, light phase waste water flows to top of tower, and the heavy phase solvent flows to tower bottom with the drop form, and two-phase is counter-current flow.Heavy phase heavy out the settling section 1 14 under tower flows out, and the waste water after extraction flows out from the light phase export 35 of top of tower.
In different embodiment, the turbine extraction tower can be designed to different sizes, to adapt to the demand of different disposal amount.
Adopt the turbine extraction tower of the utility model embodiment, can improve the rate of recovery of DMF greatly, reduce the DMF cost recovery, for the application of the industrialized unit that reclaims DMF extraction-rectification technology in the DMF waste water provides reliable guidance.
According to experimental data, after the DMF in the waste water extracted through this tower, extraction efficiency reached 98.5%.So that 20% DMF to be arranged in the waste water is example, and the extraction of turbine extraction tower can be reduced to 0.3%.The DMF purity that reclaims is 99.5%.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; any those skilled in the art; in not breaking away from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection domain of the present utility model is worked as with being as the criterion that claims were defined.
Claims (9)
1. one kind is used for it is characterized in that comprising from the extraction equipment of synthetic leather waste water recovery dimethyl formamide:
Following settling section, this time settling section top are provided with a light phase import distributor and a heavy out;
Last settling section, settling section bottom is provided with a heavy phase import distributor and a light phase export on this;
Between effective section that descends between settling section and the last settling section, effectively be provided with a plurality of column plates, a shaft and a plurality of turbine oar in the section, a plurality of column plate central openings are located in this effective section at interval, this shaft is fixed on the axis of this effective section, and a plurality of turbine oars are installed on this shaft at interval; And
Transmission device is arranged on the settling section top, and connects this shaft.
2. extraction equipment according to claim 1 is characterized in that, this time settling section top is provided with calm layer and silk screen layer.
3. extraction equipment according to claim 1 is characterized in that, settling section bottom is provided with calm layer on this.
4. extraction equipment according to claim 1 is characterized in that settling section is provided with interface of the level gauge, blowdown interface and visor on this.
5. extraction equipment according to claim 1 is characterized in that this time settling section is provided with interface of the level gauge, blowdown interface and visor.
6. according to claim 2 or 3 described extraction equipments, it is characterized in that the grid grid that this calm layer is made for bonding jumper.
7. extraction equipment according to claim 1 is characterized in that, is provided with a plurality of circular holes on described a plurality of column plates around perforate.
8. extraction equipment according to claim 1 is characterized in that, each described turbine oar is between two adjacent tray.
9. extraction equipment according to claim 1 is characterized in that, this light phase import distributor and this heavy phase import distributor are the pipe that is provided with the distribution hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205724083U CN201840908U (en) | 2010-10-22 | 2010-10-22 | Extraction plant for recovering dimethylformamide from synthetic leather production wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205724083U CN201840908U (en) | 2010-10-22 | 2010-10-22 | Extraction plant for recovering dimethylformamide from synthetic leather production wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201840908U true CN201840908U (en) | 2011-05-25 |
Family
ID=44035813
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205724083U Expired - Lifetime CN201840908U (en) | 2010-10-22 | 2010-10-22 | Extraction plant for recovering dimethylformamide from synthetic leather production wastewater |
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|---|---|
| CN (1) | CN201840908U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102335523A (en) * | 2011-08-03 | 2012-02-01 | 陆文光 | Extraction and abstraction dual-purpose integrated machine and working method thereof |
| CN102728100A (en) * | 2012-07-24 | 2012-10-17 | 四川晶萃化工科技有限公司 | Rotary screen tower for liquid-liquid extraction |
| CN103949084A (en) * | 2011-08-03 | 2014-07-30 | 陆文光 | Working method of isolation-extraction dual-purpose all-in-one machine with high working efficiency |
| CN103949085A (en) * | 2011-08-03 | 2014-07-30 | 陆文光 | Working method of isolation-extraction dual-purpose all-in-one machine |
| CN103949086A (en) * | 2011-08-03 | 2014-07-30 | 陆文光 | Working method of isolation-extraction dual-purpose all-in-one machine |
| US10370398B2 (en) | 2016-06-23 | 2019-08-06 | Tate & Lyle Technology Limited | Liquid-liquid extraction of DMF |
| 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 |
| CN110694299A (en) * | 2019-09-24 | 2020-01-17 | 浙江工程设计有限公司 | Extraction tower |
| CN112451993A (en) * | 2020-11-25 | 2021-03-09 | 中国石油化工股份有限公司 | Spray extraction equipment and solvent extraction method |
-
2010
- 2010-10-22 CN CN2010205724083U patent/CN201840908U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949086B (en) * | 2011-08-03 | 2016-06-29 | 江苏宇通干燥工程有限公司 | Extract and extract the method for work of dual-purpose integrated machine |
| CN103949085B (en) * | 2011-08-03 | 2016-08-17 | 陆文光 | A kind of method of work extracted and extract dual-purpose integrated machine |
| CN102335523B (en) * | 2011-08-03 | 2014-05-21 | 江苏宇通干燥工程有限公司 | Extraction and abstraction dual-purpose integrated machine and working method thereof |
| CN103949084A (en) * | 2011-08-03 | 2014-07-30 | 陆文光 | Working method of isolation-extraction dual-purpose all-in-one machine with high working efficiency |
| CN103949085A (en) * | 2011-08-03 | 2014-07-30 | 陆文光 | Working method of isolation-extraction dual-purpose all-in-one machine |
| CN103949086A (en) * | 2011-08-03 | 2014-07-30 | 陆文光 | Working method of isolation-extraction dual-purpose all-in-one machine |
| CN102335523A (en) * | 2011-08-03 | 2012-02-01 | 陆文光 | Extraction and abstraction dual-purpose integrated machine and working method thereof |
| CN103949084B (en) * | 2011-08-03 | 2016-08-17 | 陆文光 | Extraction that work efficiency is high and the method for work of extraction dual-purpose integrated machine |
| CN102728100A (en) * | 2012-07-24 | 2012-10-17 | 四川晶萃化工科技有限公司 | Rotary screen tower for liquid-liquid extraction |
| US10370398B2 (en) | 2016-06-23 | 2019-08-06 | Tate & Lyle Technology Limited | Liquid-liquid extraction of DMF |
| US10899783B2 (en) | 2016-06-23 | 2021-01-26 | Tate & Lyle Technology Limited | Liquid-liquid extraction of DMF |
| CN110694299A (en) * | 2019-09-24 | 2020-01-17 | 浙江工程设计有限公司 | Extraction tower |
| 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 |
| CN112451993A (en) * | 2020-11-25 | 2021-03-09 | 中国石油化工股份有限公司 | Spray extraction equipment and solvent extraction method |
| CN112451993B (en) * | 2020-11-25 | 2022-02-01 | 中国石油化工股份有限公司 | Spray extraction equipment and solvent extraction method |
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| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110525 |
|
| CX01 | Expiry of patent term |