CN204503741U - Its Future about Alkaline Residue Treatment Unit is mixed in a kind of indigo production - Google Patents
Its Future about Alkaline Residue Treatment Unit is mixed in a kind of indigo production Download PDFInfo
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- CN204503741U CN204503741U CN201520105981.6U CN201520105981U CN204503741U CN 204503741 U CN204503741 U CN 204503741U CN 201520105981 U CN201520105981 U CN 201520105981U CN 204503741 U CN204503741 U CN 204503741U
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Abstract
The utility model relates in a kind of indigo production and mixes its Future about Alkaline Residue Treatment Unit, comprise alkaline residue thinning tank, carburizing reagent still, first centrifuge, spray drying tower, incinerator, thinning tank, ageing reactor, second centrifuge and mixed base storage tank, alkaline residue thinning tank is slagged tap and is connected carburizing reagent still, alkaline residue thinning tank fluid connects mixed base storage tank, carburizing reagent still, first centrifuge, spray drying tower, incinerator, ageing reactor, second centrifuge connects successively, carburizing reagent still connects the supply of titanium dioxide tower, mixed base storage tank connects ageing reactor, second centrifuge fluid connects alkaline residue thinning tank or mixed base storage tank.
Description
Technical field
The utility model relates to indigo its Future about Alkaline Residue Treatment Unit and processing method, is the alkaline residue treatment of wastes produced device produced in KOH and NaOH mixed base recovery process in the indigo production of a kind of vat specifically.
Background technology
Indigo is a kind of vat, and it is with a long history, and before more than 4000 year, the mankind just start with natural indigo dye burlap.1880, since Germanization scholar Bayer success synthesizing indigo, indigo always lasting, be widely used in the painted of the dyeing of cloth, particularly denim.
Traditional indigo synthesis technique is: anilinoacetic acid potassium/sodium salt and Sodamide do in the system of solvent at the mixed base of KOH and NaOH and alkali fusion occurs react, and generate indoxyl potassium/sodium, ammonia and NaOH.After alkali fusion thing dilute with water, blowing air is oxidized, and obtains indigo after press filtration, and the mother liquor after press filtration is the mixed ammonium/alkali solutions of KOH and NaOH containing alkali 12%.
When alkali fusion reacts, the mixed base K/Na=1:1 of KOH and NaOH, due to when reacting, sodium in Sodamide is converted into NaOH, make the potassium sodium ratio in mother liquor be 0.5-0.6:1, NaOH is excessive, after dehydration is reclaimed, do not reach the requirement making alkali fusion solvent, existing method is: in mixed alkali, add potassium hydroxide to regulate potassium sodium ratio.This just causes mixed base has more than needed, and an alkali part more than needed is carbonized when oxidation section, becomes sodium carbonate, separates out and become alkaline residue, as solid waste in concentration process.A part runs off with indigo wash water, and the diluted alkaline in wash water neutralizes through sulfuric acid, becomes salt, finally becomes waste water.Not only contaminated environment, and the loss causing potassium, waste potassium resource.
The alkali run off in indigo wash water is through recovery, the alkali carried secretly in alkaline residue then runs off with alkaline residue, the alkaline residue of indigo generation about 1000kg per ton, and the treating method of existing alkaline residue is by selling paper mill outward, not only potassium sodium resource is not effectively utilized, and can form secondary pollution.
Summary of the invention
The utility model is for the problems referred to above, in conjunction with the feature of existing soda balance technology and chemical recovery system, its Future about Alkaline Residue Treatment Unit is mixed in the indigo production provided, adopt the method reclaiming, process, apply mechanically, removing affecting the organic impurities applied mechanically in alkaline residue, isolating sodium carbonate, again remaining alkali is got back in soda balance system, achieve the full recycling of potassium sodium resource, reach emissions reduction, reduce the consumption of potassium hydroxide, achieve the object turned waste into wealth.
The technical solution adopted in the utility model is: mix its Future about Alkaline Residue Treatment Unit in a kind of indigo production: comprise alkaline residue thinning tank, carburizing reagent still, first centrifuge, spray drying tower, incinerator, thinning tank, ageing reactor, second centrifuge and mixed base storage tank, alkaline residue thinning tank is slagged tap and is connected carburizing reagent still, alkaline residue thinning tank fluid connects mixed base storage tank, carburizing reagent still, first centrifuge, spray drying tower, incinerator, ageing reactor, second centrifuge connects successively, carburizing reagent still connects the supply of titanium dioxide tower, mixed base storage tank connects ageing reactor, second centrifuge fluid connects alkaline residue thinning tank or mixed base storage tank.
Further, described second centrifuge is slagged tap and is connected dry evaporimeter.
Further, described first centrifuge connects spray drying tower through pans.
Further, described incinerator connects ageing reactor through thinning tank.
Alkaline residue processing method is mixed in a kind of indigo production, first the alkaline residue solid waste of NaOH and the KOH mixed base being rich in sodium carbonate, organic impurities and being entrained with 20-30% of separating out in indigo oxidation press filtration mother liquor concentrations process is added in alkaline residue thinning tank, alkaline residue is sent to carburizing reagent still by alkaline residue thinning tank, stir, pass into carbon dioxide, until hydroxyl has all neutralized; Again through intermediate temperature drop, solid-liquid by the first centrifuge first separation, isolate sodium carbonate, be separated the spray-dried tower spraying dry of mother liquor and obtain solids mixing salt, incinerator high temperature sintering solids mixing salt, remove organic matter wherein, residual solid adds mixed base in mixed base storage tank in ageing reactor, pass through ion-exchange, solid-liquid is by the second centrifuge secondary separation, and secondary separation mother liquor returns in mixed base storage tank or for supplying alkaline residue thinning tank, isolates solid sodium carbonate drying and collects.
Further, solid alkaline residue drops in reactor the solid content of the rear mixed material of the stirring that adds water at 15.0%-85.0%.
Further, logical carbon dioxide has neutralized preferred PH=7-8.
Further, once, the temperature of charge 0-90 DEG C of secondary centrifuging separation.
Further, calcination temperature is at 300-1000 DEG C.
Again further, the temperature 0-90 DEG C of ion-exchange.
Be rich in sodium carbonate, organic impurities by what separate out in indigo oxidation press filtration mother liquor concentrations process and be entrained with the alkaline residue solid waste of NaOH and KOH mixed base of 20-30%, first solid alkaline residue dilutes or washs rear alkaline residue and sends in carburizing reagent still in alkaline residue thinning tank, add water after stirring, pass into carbon dioxide, until hydroxyl has all neutralized.Then, through pans cooling, the first centrifuge solid-liquid first separation, because sodium carbonate solubility in NaOH, KOH mixed base is less, the first separation of sodium carbonate precipitation goes out, and after the spray-dried tower spraying dry of first separation mother liquor, obtains solids mixing salt.The solids mixing salt will obtained again, through incinerator high temperature sintering, remove organic impurities wherein, residual solid adds the mixed base of the mixed base storage tank of indigo oxidation press filtration mother liquor concentrations in ageing reactor, potash and NaOH carry out ion-exchange, isolate sodium carbonate, and the second centrifuge secondary separation mother liquor returns mixed base storage tank or delivers to alkaline residue thinning tank, isolated solid sodium carbonate drying is collected and is sold as outside commodity, achieves the full recycling of potassium sodium resource.
The utility model technique has the feature of small investment, instant effect, energy-efficient, clean environment firendly, can be combined with existing alkali evaporization process well, and does not increase, do not introduce new impurity, is the new method of potassium sodium resource in a best recovery alkaline residue.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
In figure: alkaline residue thinning tank 1, carburizing reagent still 2, first centrifuge 3, pans 4, spray drying tower 5, incinerator 6, thinning tank 7, ageing reactor 8, mixed base storage tank 9, second centrifuge 10, dry evaporimeter 11.
Detailed description of the invention
The present invention can be further described with nonlimiting examples hereinafter.
Shown in Fig. 1, mix its Future about Alkaline Residue Treatment Unit in a kind of indigo production and comprise alkaline residue thinning tank 1, carburizing reagent still 2, first centrifuge 3, pans 4, spray drying tower 5, incinerator 6, thinning tank 7, ageing reactor 8, mixed base storage tank 9, second centrifuge 10 and dry evaporimeter 11.Alkaline residue thinning tank is slagged tap and is connected carburizing reagent still, alkaline residue thinning tank fluid connects mixed base storage tank, carburizing reagent still, the first centrifuge, pans, spray drying tower, incinerator, thinning tank, ageing reactor, the second centrifuge connect successively, carburizing reagent still connects the supply of titanium dioxide tower, mixed base storage tank connects ageing reactor, second centrifuge fluid connects alkaline residue thinning tank or mixed base storage tank, and the second centrifuge is slagged tap and connected dry evaporimeter.。
Embodiment 1:
By the alkaline residue produced in a collection of indigo production, take 1000kg and add in reactor, add 800kg water, after stirring 30min, pass into carbon dioxide, until hydroxyl total overall reaction is complete, pH value reaches 8.Then, open temperature lowering water, material is down to 75 DEG C, then centrifugation, obtains sodium carbonate 73kg.First separation mother liquor, with being pumped to spray drying tower, after spray-dried, obtains solids mixing salt 714kg.The solids mixing salt will obtained again, through high temperature sintering, remove organic matter wherein, calcination 2h, temperature controls at 630-650 DEG C.Calcination residual solid is joined in the mixed base of 48%, by ion-exchange, isolate sodium carbonate 381kg, secondary separation mother liquor returns in soda balance system, isolated solid sodium carbonate is sold as outside commodity after weighing, packing, and potassium hydroxide has been got back to again in mixed base.
Embodiment 2:
By the alkaline residue produced in a collection of indigo production, take 1000kg and add in reactor, add 600kg water, after stirring 30min, pass into carbon dioxide, until hydroxyl total overall reaction is complete, pH value reaches 8.Then, open temperature lowering water, material is down to 75 DEG C, then centrifugation, obtains sodium carbonate 116kg.A mother liquor, with being pumped to spray drying tower, after spray-dried, obtains solids mixing salt 664kg.The solids mixing salt will obtained again, through high temperature sintering, remove organic matter wherein, calcination 1.5h, temperature controls at 750-800 DEG C.Calcination residual solid is joined in the mixed base of 48%, by ion-exchange, isolate sodium carbonate 355kg, secondary mother liquid returns in soda balance system, isolated solid sodium carbonate is sold as outside commodity after weighing, packing, and potassium hydroxide has been got back to again in mixed base.
Claims (4)
1. mix its Future about Alkaline Residue Treatment Unit in an indigo production, it is characterized in that: comprise alkaline residue thinning tank, carburizing reagent still, first centrifuge, spray drying tower, incinerator, thinning tank, ageing reactor, second centrifuge and mixed base storage tank, alkaline residue thinning tank is slagged tap and is connected carburizing reagent still, alkaline residue thinning tank fluid connects mixed base storage tank, carburizing reagent still, first centrifuge, spray drying tower, incinerator, ageing reactor, second centrifuge connects successively, carburizing reagent still connects the supply of titanium dioxide tower, mixed base storage tank connects ageing reactor, second centrifuge fluid connects alkaline residue thinning tank or mixed base storage tank.
2. mix its Future about Alkaline Residue Treatment Unit in the indigo production of one according to claim 1, it is characterized in that: described second centrifuge is slagged tap and connected dry evaporimeter.
3. mix its Future about Alkaline Residue Treatment Unit in the indigo production of one according to claim 1, it is characterized in that: described first centrifuge connects spray drying tower through pans.
4. mix its Future about Alkaline Residue Treatment Unit in the indigo production of one according to claim 1, it is characterized in that: described incinerator connects ageing reactor through thinning tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520105981.6U CN204503741U (en) | 2015-02-13 | 2015-02-13 | Its Future about Alkaline Residue Treatment Unit is mixed in a kind of indigo production |
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| CN201520105981.6U CN204503741U (en) | 2015-02-13 | 2015-02-13 | Its Future about Alkaline Residue Treatment Unit is mixed in a kind of indigo production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104624615A (en) * | 2015-02-13 | 2015-05-20 | 内蒙古泰兴泰丰化工有限公司 | Treatment device for mixed alkaline residue in indigo blue production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104624615A (en) * | 2015-02-13 | 2015-05-20 | 内蒙古泰兴泰丰化工有限公司 | Treatment device for mixed alkaline residue in indigo blue production |
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