CN101003366A - Method for producing sodium hydrosulfite by using epoxy compound as auxiliary agent - Google Patents
Method for producing sodium hydrosulfite by using epoxy compound as auxiliary agent Download PDFInfo
- Publication number
- CN101003366A CN101003366A CN 200610150002 CN200610150002A CN101003366A CN 101003366 A CN101003366 A CN 101003366A CN 200610150002 CN200610150002 CN 200610150002 CN 200610150002 A CN200610150002 A CN 200610150002A CN 101003366 A CN101003366 A CN 101003366A
- Authority
- CN
- China
- Prior art keywords
- synthetic
- pot
- sodium hydrosulfite
- auxiliary agent
- epoxy compound
- 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.)
- Pending
Links
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 title claims abstract description 17
- 150000001875 compounds Chemical class 0.000 title claims abstract description 16
- 239000004593 Epoxy Substances 0.000 title claims abstract description 15
- 239000012752 auxiliary agent Substances 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title abstract 5
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 9
- 239000011734 sodium Substances 0.000 claims abstract description 9
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 27
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 12
- 239000004615 ingredient Substances 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000013505 freshwater Substances 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 3
- 239000004280 Sodium formate Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 238000004886 process control Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 claims description 3
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 claims description 3
- 235000019254 sodium formate Nutrition 0.000 claims description 3
- 235000010262 sodium metabisulphite Nutrition 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 229920002994 synthetic fiber Polymers 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 150000002924 oxiranes Chemical class 0.000 claims description 2
- 238000007086 side reaction Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 230000005764 inhibitory process Effects 0.000 abstract 1
- 238000005070 sampling Methods 0.000 abstract 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Glass Compositions (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a method for producing sodium hydrosulfite, in particular to a method for producing sodium hydrosulfite by using epoxyA method for producing sodium hydrosulfite by using the compound as an auxiliary agent. The problems to be solved are that the background technology exists: difficult inhibition of side reaction, poor product stability, low synthesis yield, high raw material consumption and the like. The key point of the technical scheme adopted for solving the technical problems is to analyze Na in the materials in the synthesis pot when sampling2S2O3When the concentration is more than or equal to 5g/L, the epoxy compound is supplemented to Na2S2O3Stopping when the concentration is less than or equal to 5 g/L. The method is applied to the production of sodium hydrosulfite, and has the remarkable advantages of inhibiting side reaction, improving the synthesis rate and reducing the cost.
Description
Technical field: the present invention relates to produce the method for vat powder, particularly a kind of method of producing vat powder with epoxy compound as auxiliary agent.
Background technology: at present, produce the method for vat powder, conditions such as the pH value of reaction solution and pressure, temperature are produced vat powder in the synthetic pot of major control.This method exists that side reaction is difficult to suppress, product stability is poor, synthesis yield is low, the shortcomings such as raw materials consumption height.The sodium thiosulfate Na that generates of side reaction particularly
2S
2O
3, increased consumption of raw materials, cause above problem to take place.What therefore effectively suppress side reaction is to produce sodium hydrosulfite method institute problem demanding prompt solution.
Summary of the invention: the objective of the invention is to propose a kind of method of producing vat powder with epoxy compound as auxiliary agent, the solution background technology exists: side reaction is difficult to suppress, product stability is poor, synthesis yield is low, shortcomings such as raw materials consumption height.Solving the technical scheme that above technical problem adopts is: 1, a kind of method of producing sodium hydrosulfite with epoxy compound as auxiliary agent, (1) synthetic bed material preparation: under normal temperature, normal pressure, material (to call the ingredients pot material in the following text No. 1) with refined methanol or synthesis mother liquid, sodium formate and fresh water (FW) preparation adds 1000～1500L in synthetic pot, start synthetic pot and stir, pass into steam to synthetic pot chuck then and slowly heat up; (2) in and tone pitch: when synthetic kettle temperature rises to 75 ℃～80 ℃, the synthetic pot inner pressure 0.05～0.30MPa of control, the acidificated material (to call the ingredients pot material in the following text No. 2) that adds refined methanol or washing methyl alcohol, sodium pyrosulfite or sodium carbonate, sulfur dioxide liquid preparation in the synthetic pot is regulated in the synthetic pot material pH value 4.2～4.6 and o'clock is ended; (3) the big dropping: behind the tone pitch, when synthetic kettle temperature rose to 80～85 ℃, beginning is dropping greatly, namely simultaneously leftover materials in No. 1, No. 2 ingredients pots was evenly added in 50min～90min; (4) little dropping: drip greatly rear a synthetic pot material suitably is incubated 5～15min after, begin little dropping, namely add equably sulfur dioxide liquid with 100～180min thread shape, until from synthetic material during Sodium Hydrosulfite Content 〉=88.5% synthetic droplet add end; (5) insulation: when synthetic reach terminal point after, insulation 30min～90min, 80～84 ℃ of the synthetic pot inner pressure 0.10～0.25MPa of insulating process control, temperature, insulation terminal point PH 〉=4.9; (6) cooling blowing: be incubated complete, opening clamp jacket water valve, synthetic pot inner pressure≤the 0.1MPa of control, 60～70 ℃ of temperature, pH value 〉=4.9 will be synthesized then in the pot material and be put into four unification driers and carry out press filtration, washing, drying, cooling, blending, blowing, packing and make qualified sodium hydrosulfite product; It is characterized in that in the above process Na in the synthetic pot of sample analysis material
2S
2O
3During 〉=5g/L, end when adding epoxide to Na2S203≤5g/L.The epoxy compounds of adding is oxyethane or propylene oxide.
The beneficial effect that the present invention and background technology comparison have is: owing to add epoxy compound as auxiliary agent on the methodological science ground that produces sodium hydrosulfite, play the generation that suppresses side reaction in synthetic sodium hydrosulfite process, reduced accessory substance Na
2S
2O
3Generation, therefore improved product stability, increased synthesis yield, reduced raw materials consumption.
Embodiment:
Embodiment 1, a kind of method of producing sodium hydrosulfite with epoxy compound as auxiliary agent, (1) synthetic bed material preparation: under normal temperature, normal pressure, material (to call the ingredients pot material in the following text No. 1) with refined methanol or synthesis mother liquid, sodium formate and fresh water (FW) preparation adds 1000～1500L in synthetic pot, start synthetic pot and stir, pass into steam to synthetic pot chuck then and slowly heat up; (2) in and tone pitch: when synthetic kettle temperature rises to 75 ℃～80 ℃, the synthetic pot inner pressure 0.05～0.30MPa of control, the acidificated material (to call the ingredients pot material in the following text No. 2) that adds refined methanol or washing methyl alcohol, sodium pyrosulfite or sodium carbonate, sulfur dioxide liquid preparation in the synthetic pot is regulated in the synthetic pot material pH value 4.2～4.6 and o'clock is ended; (3) the big dropping: behind the tone pitch, when synthetic kettle temperature rose to 80～85 ℃, beginning is dropping greatly, namely simultaneously leftover materials in No. 1, No. 2 ingredients pots was evenly added in 50min～90min; (4) little dropping: drip greatly rear a synthetic pot material suitably is incubated 5～15min after, begin little dropping, namely add equably sulfur dioxide liquid with 100～180min thread shape, until from synthetic material during Sodium Hydrosulfite Content 〉=88.5% synthetic droplet add end; (5) insulation: when synthetic reach terminal point after, insulation 30min～90min, 80～84 ℃ of the synthetic pot inner pressure 0.10～0.25MPa of insulating process control, temperature, insulation terminal point PH 〉=4.9; (6) cooling blowing: be incubated complete, open chuck condensed water valve, synthetic pot inner pressure≤the 0.1MPa of control, 60～70 ℃ of temperature, pH value 〉=4.9 will be synthesized then in the pot material and be put into four unification driers and carry out press filtration, washing, drying, cooling, blending, blowing, packing and make qualified sodium hydrosulfite product; It is characterized in that in the above process Na in the synthetic pot of sample analysis material
2S
2O
3During 〉=5g/L, add oxirane to Na
2S
2O
3End during≤5g/L.
Embodiment 2, except that epoxy compounds is propylene oxide, all the other are identical with embodiment 1.
Claims (3)
1, a kind of method of producing sodium hydrosulfite with epoxy compound as auxiliary agent, (1) synthetic bed material preparation: under normal temperature, normal pressure, material (to call the ingredients pot material in the following text No. 1) with refined methanol or synthesis mother liquid, sodium formate and fresh water (FW) preparation adds 1000～1500L in synthetic pot, start synthetic pot and stir, pass into steam to synthetic pot chuck then and slowly heat up; (2) in and tone pitch: when synthetic kettle temperature rises to 75 ℃～80 ℃, the synthetic pot inner pressure 0.05～0.30MPa of control, the good material (to call the ingredients pot material in the following text No. 2) of caproic acidization that adds refined methanol or washing methyl alcohol, sodium pyrosulfite or sodium carbonate, sulfur dioxide liquid preparation in the synthetic pot is regulated in the synthetic pot material pH value 4.2～4.6 and o'clock is ended; (3) the big dropping: behind the tone pitch, when synthetic kettle temperature rose to 80～85 ℃, beginning is dropping greatly, namely simultaneously leftover materials in No. 1, No. 2 ingredients pots was evenly added in 50min～90min; (4) little dropping: drip greatly rear a synthetic pot material suitably is incubated 5～15min after, begin little dropping, namely add equably sulfur dioxide liquid with 100～180min thread shape, until from synthetic material during Sodium Hydrosulfite Content 〉=88.5% synthetic droplet add end; (5) insulation: when synthetic reach terminal point after, insulation 30min～90min, 80～84 ℃ of the synthetic pot inner pressure 0.10～0.25MPa of insulating process control, temperature, insulation terminal point PH 〉=4.9; (6) cooling blowing: be incubated complete, opening clamp jacket water valve, synthetic pot inner pressure≤the 0.1MPa of control, 60～70 ℃ of temperature, pH value 〉=4.9 will be synthesized then in the pot material and be put into four unification driers and carry out press filtration, washing, drying, cooling, blending, blowing, packing and make qualified sodium hydrosulfite product; It is characterized in that in the above process Na in the synthetic pot of sample analysis material
2S
2O
3During 〉=5g/L, add epoxide to Na
2S
2O
3End during≤5g/L.
2, according to the described a kind of method of producing vat powder of claim 1, it is characterized in that the epoxy compounds of adding is an oxyethane with epoxy compound as auxiliary agent.
3, according to the described a kind of method of producing vat powder of claim 1, it is characterized in that the epoxy compounds of adding is a propylene oxide with epoxy compound as auxiliary agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610150002 CN101003366A (en) | 2006-10-24 | 2006-10-24 | Method for producing sodium hydrosulfite by using epoxy compound as auxiliary agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610150002 CN101003366A (en) | 2006-10-24 | 2006-10-24 | Method for producing sodium hydrosulfite by using epoxy compound as auxiliary agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101003366A true CN101003366A (en) | 2007-07-25 |
Family
ID=38702802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610150002 Pending CN101003366A (en) | 2006-10-24 | 2006-10-24 | Method for producing sodium hydrosulfite by using epoxy compound as auxiliary agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101003366A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102530883A (en) * | 2011-12-14 | 2012-07-04 | 烟台金海化工有限公司 | Method for synthetizing sodium hydrosulfite |
| CN102556980A (en) * | 2011-12-14 | 2012-07-11 | 烟台金海化工有限公司 | Method for synthesizing sodium dithionite |
| CN102674266A (en) * | 2012-05-23 | 2012-09-19 | 江苏省东泰精细化工有限责任公司 | Drying method of zinc dust process based sodium hydrosulfite |
| CN103552991A (en) * | 2013-10-23 | 2014-02-05 | 中盐安徽红四方股份有限公司 | Novel continuous large dropwise adding technological method in sodium hydrosulfite production |
| CN104341328A (en) * | 2014-10-16 | 2015-02-11 | 烟台市金河保险粉厂有限公司 | Method for producing ethanethiol by utilizing distilled crude methanol residue liquid in production process of sodium hydrosulfite |
| CN106517103A (en) * | 2016-12-14 | 2017-03-22 | 赤峰瑞阳化工有限公司 | Sodium hydrosulfite synthesizing and continuous producing method |
-
2006
- 2006-10-24 CN CN 200610150002 patent/CN101003366A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102530883A (en) * | 2011-12-14 | 2012-07-04 | 烟台金海化工有限公司 | Method for synthetizing sodium hydrosulfite |
| CN102556980A (en) * | 2011-12-14 | 2012-07-11 | 烟台金海化工有限公司 | Method for synthesizing sodium dithionite |
| CN102530883B (en) * | 2011-12-14 | 2013-10-23 | 烟台市金河保险粉厂有限公司 | Method for synthetizing sodium hydrosulfite |
| CN102674266A (en) * | 2012-05-23 | 2012-09-19 | 江苏省东泰精细化工有限责任公司 | Drying method of zinc dust process based sodium hydrosulfite |
| CN103552991A (en) * | 2013-10-23 | 2014-02-05 | 中盐安徽红四方股份有限公司 | Novel continuous large dropwise adding technological method in sodium hydrosulfite production |
| CN104341328A (en) * | 2014-10-16 | 2015-02-11 | 烟台市金河保险粉厂有限公司 | Method for producing ethanethiol by utilizing distilled crude methanol residue liquid in production process of sodium hydrosulfite |
| CN106517103A (en) * | 2016-12-14 | 2017-03-22 | 赤峰瑞阳化工有限公司 | Sodium hydrosulfite synthesizing and continuous producing method |
| CN106517103B (en) * | 2016-12-14 | 2018-07-27 | 赤峰瑞阳化工有限公司 | Sodium hydrosulfite synthesizes continuous production method |
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Open date: 20070725 |