CN1029399C - Process for producing xanthate - Google Patents
Process for producing xanthate Download PDFInfo
- Publication number
- CN1029399C CN1029399C CN 92111763 CN92111763A CN1029399C CN 1029399 C CN1029399 C CN 1029399C CN 92111763 CN92111763 CN 92111763 CN 92111763 A CN92111763 A CN 92111763A CN 1029399 C CN1029399 C CN 1029399C
- Authority
- CN
- China
- Prior art keywords
- xanthate
- xanthogenate
- drying
- product
- vertical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 239000012991 xanthate Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 238000004898 kneading Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 230000006837 decompression Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 238000006864 oxidative decomposition reaction Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- RZFBEFUNINJXRQ-UHFFFAOYSA-M sodium ethyl xanthate Chemical compound [Na+].CCOC([S-])=S RZFBEFUNINJXRQ-UHFFFAOYSA-M 0.000 description 5
- 239000002904 solvent Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 206010013786 Dry skin Diseases 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical class CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
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- Drying Of Solid Materials (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Medicinal Preparation (AREA)
Abstract
A process for preparing xanthogenate includes such steps as preparing the powdered product by direct synthesis into vertical tablet or rod by horizontal ring mould or vertical flat mould granulating press, and drying in vertical disk vibration drier or fluidized-bed drier at ordinary pressure or under reduced pressure to obtain xanthogenate product in the form of particles, tablet or rod whose main content is greater than or equal to 90%. The process greatly shortens the drying time of the xanthate, avoids the decomposition of the xanthate, overcomes the serious defects of easy moisture absorption, caking, easy oxidative decomposition, inconvenient use and the like of the existing powdery product, and is an ideal production method of the xanthate.
Description
The invention provides a kind of production method of xanthogenate.
The external production technique of xanthogenate (being commonly called as xanthate, hereinafter to be referred as xanthate) drying and moulding product is after producing dry xanthate (powdery) with solvent method, reshaping, and granulation can be represented by the formula:
ROH, CS
2, MeOH (solvent)/() xanthate dry product (powdery) → domestic production technique of xanthate dry product (granular) is to adopt direct synthesis technique to produce the powdery xanthate, forms dry xanthate through vacuum-drying again, represent with following formula:
ROH, CS
2, in MeOH (kneading machine)/() xanthate synthetics (powdery) (Vacuumdrier)/() xanthate dry product (granular) formula, R-alkyl (basic CnH
2N+1, n=2,3,4,5,6,7,8 ...).
Me-metal K, Na ion
External solvent process is because solvent reasons such as (pentanes), domestic can't the employing, and the powdery xanthate that domestic direct synthesis technique is produced exists easy moisture absorption, caking, easily oxidation, easily decompose, unstable chemcial property uses inconvenience, defectives such as environmental pollution is serious are difficult to satisfy actual needs.
Purpose of the present invention aims to provide a kind of production method of xanthogenate, is the granulated dried xanthate with the further deep processing of powdery xanthate synthetics, thereby overcomes the deficiencies in the prior art.
Technical solution of the present invention is: the present invention is three unique machine system process of utilization on the existing at home synthetic xanthate technology basis, is the granulated dried product with the further deep processing of powdery synthetics xanthate.The production method of xanthogenate of the present invention is meant to be 5-15%(weight by the directly synthetic generation water content of kneading machine at first; Powdered xanthate down together); grain, sheet, the bar-shaped xanthate of certain size made in horizontal ring mould of process or the moulding of vertical flat-die class pressing granula machine; pass through vertical disk vibration drier or vibrated fluidized bed drier again, cryodrying becomes grain, the sheet of xanthogenate master content 〉=90%, a whole set of three machines process system of bar-shaped form xanthate under normal pressure or decompression.The present invention can illustrate with following formula, that is:
ROH, CS
2, MeOH (kneading machine)/() xanthate synthetics (powdery) (shaper)/() xanthate synthetics (grain) (drying machine)/() xanthate dry product
The moulding of xanthate of the present invention is meant that through the tablets press extrusion molding tablets press is meant horizontal ring mould class pressing granula machine such as KY(W), series such as YL or vertical flat-die class pressing granula machine such as KYL series; Its drying temperature is 20-120 ℃, and drying pressure is 0～-1 * 10
5Pa, the grain of xanthate, sheet, the bar-shaped diameter of phi 2-Φ 20mm that is of a size of, high (length) degree 2-30mm.The xanthate drying machine is vertical disc-like drying machine such as WZC series etc. or fluid bed dryer such as GZO series etc.
Accompanying drawing is the synoptic diagram of technology of the present invention.
Among the figure, I-kneading machine, II-horizontal ring mould or vertical flat-die pressing granula machine, III-vertical disk vibration or fluidized-bed vibrating dryer.
Major advantage of the present invention is:
1, the present invention has shortened drying time greatly, and existing general vacuum drying process needs 5-7 hour, and technology of the present invention drying under normal pressure only needs 20-50 minute.
Even 2, the present invention's low temperature drying under normal pressure can prevent effectively that also xanthate from decomposing, thereby improve the xanthate quality.
3, the present invention can reduce the dust pollution of xanthate, improves the casting yield in the production process, and the decrease product cost has also prevented that the chemical dust in the use procedure from polluting simultaneously effectively, has good social benefit and economic benefit.
4, product of the present invention has overcome the easy moisture absorption of powdery xanthate, caking, easily oxidation effectively, has easily decomposed, and unstable chemcial property uses major defects such as inconvenience, is a kind of comparatively ideal particulate state xanthate production technique.
Embodiment (producing the sodium ethyl xanthate product):
1) with NaOH, CS
2, C
2H
5The OH raw material drops into building-up reactions machine (kneading machine), generates main content and be 82.5% powdery sodium ethyl xanthate.
2) the powdery sodium ethyl xanthate being sent into horizontal ring mold pressing grain machine, to make diameter be that Φ 4mm, length are the particulate state sodium ethyl xanthate that 5-10mm does not wait.
3) granular sodium ethyl xanthate is sent into vertical disk vibration drying machine, at normal temperatures, the control drying temperature is a 40-65 ℃ of scope, and through after 38 minutes dryings, promptly winner's content is 91.5% shaping and drying xanthate product.
Claims (3)
1, the production method of xanthogenate; be the Powdered xanthate hydrochlorate of 5-15% at first by the directly synthetic generation water content of kneading machine; it is characterized in that Powdered xanthogenate is made through horizontal ring mould or vertical flat-die class pressing granula machine grain, the sheet, bar-shaped of certain size; pass through vertical disk vibration drier or vibrated fluidized bed drier again, cryodrying becomes grain, sheet, the bar-shaped xanthogenate product of main content greater than (or equaling) 90% under normal pressure or decompression.
2, method according to claim 1 is characterized in that grain, sheet, the bar-shaped diameter of phi 2-Φ 20mm that is of a size of of xanthate, and high (length) degree is 2-30mm.
3, method according to claim 1 or 5 is characterized in that the xanthate drying process temperature is 20-120 ℃, and drying pressure is 0～1 * 10
5Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92111763 CN1029399C (en) | 1992-12-15 | 1992-12-15 | Process for producing xanthate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92111763 CN1029399C (en) | 1992-12-15 | 1992-12-15 | Process for producing xanthate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1074902A CN1074902A (en) | 1993-08-04 |
| CN1029399C true CN1029399C (en) | 1995-08-02 |
Family
ID=4945503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92111763 Expired - Fee Related CN1029399C (en) | 1992-12-15 | 1992-12-15 | Process for producing xanthate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1029399C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100367948C (en) * | 2001-11-17 | 2008-02-13 | 照隅制药株式会社 | Production of pure stereoisomers of tricyclo[5.2.1.02.6]-dec-9-yl xanthogenate and medicaments therefrom |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103817014B (en) * | 2014-02-21 | 2016-04-20 | 中南大学 | A kind of preparation method of granular yellow chemical |
-
1992
- 1992-12-15 CN CN 92111763 patent/CN1029399C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100367948C (en) * | 2001-11-17 | 2008-02-13 | 照隅制药株式会社 | Production of pure stereoisomers of tricyclo[5.2.1.02.6]-dec-9-yl xanthogenate and medicaments therefrom |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1074902A (en) | 1993-08-04 |
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| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |