CN1453282A - Prepn of lignosulfonate with furaldehyde residue - Google Patents
Prepn of lignosulfonate with furaldehyde residue Download PDFInfo
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- CN1453282A CN1453282A CN 02109524 CN02109524A CN1453282A CN 1453282 A CN1453282 A CN 1453282A CN 02109524 CN02109524 CN 02109524 CN 02109524 A CN02109524 A CN 02109524A CN 1453282 A CN1453282 A CN 1453282A
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- lignin
- alkali
- furfural dregs
- xylogen
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Abstract
Furaldehyde residue is digested, alkali dissolved, and acid separated to separate out lignin; alkali lignin is made to produce carbonation reaction with sodium sulfite and water to produce lignocarbonate, and the product is stoved to produce fulvous powdered lignocarbonate.The present invention provides one new kind of lignocarbonate producing material.
Description
The present invention relates to a kind ofly from the furfural dregs, produce Organic Chemicals, particularly produce the method for sulfonated lignin.
Sulfonated lignin are important chemical material, especially produce the main industrial chemicals of feero-chromo-lignosulfonate.At present, sulfonated lignin are mainly produced from papermaking wastewater, sugarcane dregs, but do not satisfy needs far away.Pile up like a mountain at the furfural dregs of furfural mill for we, has only part to be used for burning boiler, and the corrosion body of heater, and major part can't be handled, and causes environmental pollution.Therefore, the comprehensive utilization of furfural dregs becomes the problem that people study.In the furfural dregs, contain about 38% xylogen by assay, discovery to the furfural dregs.Through the furfural dregs being carried out boiling, molten, the separation of alkali, xylogen is extracted from the furfural dregs, again through acid out, make alkali lignin, alkali lignin generates sulfonated lignin through sulfonation.Drying generates the sulfonated lignin of chocolate brown powder shape again.
The purpose of this invention is to provide a kind of method of producing sulfonated lignin with the furfural dregs.
The object of the present invention is achieved like this: earlier the furfural dregs are carried out boiling, molten, the separation of alkali, xylogen is extracted from the furfural dregs, again through acid out, separation, produce the solid alkali xylogen, alkali lignin is added S-WAT and water carries out sulfonation reaction, generate alkali lignin sulfonate, the oven dry of drying tower, the sulfonated lignin of generation chocolate brown powder shape.
From the furfural dregs, produce sulfonated lignin, source for this Organic Chemicals of sulfonated lignin, a new channel is provided, alleviated and produced the feero-chromo-lignosulfonate situation that there is lack of raw materials, furfural dregs refuse is fully utilized, solved furfural dregs environmental pollution problem.
Specify preparation method below in conjunction with accompanying drawing:
Fig. 1 is a process flow sheet of producing sulfonated lignin with the furfural dregs.
Earlier with No. 1, furfural dregs, caustic soda, water, chemical reagent, by 1: 0.2-0.3: 1: 0.05 heating tank 1 of packing into, it is molten to carry out alkali, heat 130 ℃, add 3-6 barometric point, molten through 2-6 hour boiling alkali, then, through separating machine 2, xylogen is separated from the furfural dregs, remove fibrous residue, with lignin liquor, hydrochloric acid, by 1: 0.01-0.02 adds reactor 3 and carries out acid out, heat 90 ℃, generate alkali lignin and precipitation, separating machine 4 after filtration, make the solid alkali xylogen.With alkali lignin, water, S-WAT by 1: 1: 0.25-0.4 adds reactor 5 and carries out sulfonation, heating is not less than 130 ℃-160 ℃, the sulfonation time is more than 6 hours, generate the lignosulfonic acid salts solution, then, enter the drying tower flood and do, require tower top temperature to reach 280 ℃-320 ℃, generate the sulfonated lignin of chocolate brown powder shape, enter stockyard 8 through packing 7.
Claims (5)
1. produce the method for lignin-sulphonate with the furfural dregs for one kind, it is characterized in that earlier the furfural dregs are molten through boiling, alkali, separate, xylogen is separated from the furfural dregs, again with lignin liquor through acid out, make alkali lignin, alkali lignin through sulfonation, is produced alkali lignin sulfonate.The oven dry of drying tower generates the powdery alkali sulfonated lignin.
2. a kind of method of producing sulfonated lignin with the furfural dregs according to claim 1, it is characterized in that 130 ℃ of the heating tank heating of packing into of furfural dregs, add 3-6 barometric point, molten through 2-6 hour boiling alkali, with separating machine xylogen is separated from the furfural dregs.
3. according to claim 1ly a kind ofly produce the method for sulfonated lignin with the furfural dregs, wherein with the lignin liquor acid out, it is characterized in that lignin liquor and hydrochloric acid are by 1: 0.01-0.02 adds reactor and carries out acid out, extracts the solid alkali xylogen.
4. a kind of method of producing sulfonated lignin with the furfural dregs according to claim 1, wherein be with the alkali lignin sulfonation with alkali lignin, water, S-WAT by 1: 1: 0.25-0.4 adds reactor to carry out the sulfonation reaction heating and is not less than 130 ℃-160 ℃, and curing time is more than 6 hours.
5. according to claim 1ly a kind ofly produce the method for sulfonated lignin, it is characterized in that entering drying tower drying requirement drying tower tower top temperature and reach 280 ℃-320 ℃ with the furfural dregs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02109524 CN1453282A (en) | 2002-04-23 | 2002-04-23 | Prepn of lignosulfonate with furaldehyde residue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02109524 CN1453282A (en) | 2002-04-23 | 2002-04-23 | Prepn of lignosulfonate with furaldehyde residue |
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| CN1453282A true CN1453282A (en) | 2003-11-05 |
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| CN 02109524 Pending CN1453282A (en) | 2002-04-23 | 2002-04-23 | Prepn of lignosulfonate with furaldehyde residue |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337981B (en) * | 2008-08-18 | 2010-09-22 | 昆明理工大学 | Method for preparing lignin using bagasse as raw material |
| CN102391022A (en) * | 2011-08-12 | 2012-03-28 | 祁长喜 | Method for producing fulvic acid potassium by furfural residue and biological ash |
| CN104892955A (en) * | 2015-06-24 | 2015-09-09 | 济南圣泉集团股份有限公司 | Lignosulfonate for drilling fluid and lignosulfonate preparation method |
| CN113862055A (en) * | 2021-10-26 | 2021-12-31 | 山东众森科技股份有限公司 | Modified furfural residue biomass coal-saving agent |
-
2002
- 2002-04-23 CN CN 02109524 patent/CN1453282A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337981B (en) * | 2008-08-18 | 2010-09-22 | 昆明理工大学 | Method for preparing lignin using bagasse as raw material |
| CN102391022A (en) * | 2011-08-12 | 2012-03-28 | 祁长喜 | Method for producing fulvic acid potassium by furfural residue and biological ash |
| CN104892955A (en) * | 2015-06-24 | 2015-09-09 | 济南圣泉集团股份有限公司 | Lignosulfonate for drilling fluid and lignosulfonate preparation method |
| CN113862055A (en) * | 2021-10-26 | 2021-12-31 | 山东众森科技股份有限公司 | Modified furfural residue biomass coal-saving agent |
| CN113862055B (en) * | 2021-10-26 | 2023-08-25 | 山东众森科技股份有限公司 | Modified furfural residue biomass coal-saving agent |
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