CN101638867A - Fatty acid defoamer - Google Patents
Fatty acid defoamer Download PDFInfo
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- CN101638867A CN101638867A CN200810012577A CN200810012577A CN101638867A CN 101638867 A CN101638867 A CN 101638867A CN 200810012577 A CN200810012577 A CN 200810012577A CN 200810012577 A CN200810012577 A CN 200810012577A CN 101638867 A CN101638867 A CN 101638867A
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- Prior art keywords
- fatty acid
- defoamer
- allyl alcohol
- acid defoamer
- naoh
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Abstract
The invention relates to a fatty acid defoamer suitable for processes of soda pulping and papermaking. The fatty acid defoamer is prepared from the following compositions: fatty acid, fatty acid amide, aliphatic ester, allyl alcohol and sodium hydroxide of which the weight ratio is 100-220:60-100:80-150:50-85:40-70. The fatty acid defoamer has good defoaming capacity and foam inhibiting capacity,and strong emulsifying, dispersing and permeating capacities, can be matched with mineral oil, silicone oil and the like, can make up for the performance of other defoamers such as dispersivity and the like, and has low cost and good economic and social benefits.
Description
Technical field
The present invention relates to a kind of defoamer, relate in particular to a kind of fatty acid defoamer, be applicable to soda pulping process and machine hand's preface.
Background technology
The consumption of defoamer in paper industry is little, but its effect can not be ignored.In whole pulp and paper industry process, sequence of operations behind the boiling blowing, as washing, screening, bleaching, concentrate, pulp feeding system, top sizing, coating, black liquor recovery etc., all be subjected to the influence of foam to some extent, disturb ordinary production, paper quality is descended, when serious production can't be gone on.The removing method of foam mainly contains chemical method, physics method and Mechanical Method.Chemistry froth breaking method is exactly to add chemical substance (defoamer) in process of production to eliminate foam; The utilization of physical defoaming method is left standstill, is heated or reduce pressure and eliminates foam; The mechanical defoaming method adopts mechanical force to make lather collapse exactly.Physics method and Mechanical Method are simple to operate, but passive, only take stopgap measures and do not effect a permanent cure, and effect is undesirable.Using the most widely used at present is chemical froth breaking method, promptly uses the formation of foam in the defoamer control paper-making process and abolishes established foam.
In pulping process, owing to contain natural materials such as aliphatic acid, resin acid in the pulping raw material, foamers such as generation fatty acid soaps, the resin acid soaps of reacting with chemicalss such as the caustic soda that adds, akali sulphide, add the steady bubble effect of polymer substances such as cellulose, when the stream of slurry send and mixes, bring a large amount of air into slurry system and just formed a large amount of stable foams, bring very big difficulty for subsequent handling such as washing, conveying, bleaching etc., cause laitance and pulp quality is reduced.The factory that has adopts " clear water is pressed bubble ", and this method is to certain effect that defoams, but the de-bubble effect is unsatisfactory.Pulping process washs foaming such as fatty acid soaps that the black liquor that gets off also contains high concentration, resin acid soaps and surely steeps material, is handled easily and improves the paper pulp alkali recovery, also must carry out defoaming treatment to black liquor.
In the slip of machine hand's preface, also contain to the pulping process slip in similar foaming and steady bubble material, in operation also can entrained air and produce foam, the existence of foam has a significant impact paper, make that degree of sizing is poor, the cross direction ration homogeneity is poor, paper spot, diaphanous spot and small holes etc. occur, even causes disconnected paper.In addition, produce a large amount of foams in the paper plain boiled water, also should add defoamer and get rid of, to improve the rate of recovery of paper pulp if copy.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art,, make meticulously through the optimization of C design, a kind of fatty acid defoamer is provided, solved in the prior art in the soda pulping process and machine hand's preface the froth breaking of defoamer and pressed down short problem of bubble time, and cost is low, dispersibility is strong.
Technical scheme of the present invention is as follows:
It is formulated by weight by following compositions, aliphatic acid: fatty acid amide: fatty acid ester: allyl alcohol: NaOH=100-220: 60-100: 80-150: 50-85: 40-70.
The preferred weight ratio of raw material of the present invention is aliphatic acid: fatty acid amide: fatty acid ester: allyl alcohol: NaOH=160: 95: 102: 63: 48.
Advantage of the present invention and beneficial effect are as follows:
The present invention has good froth breaking ability and presses down the bubble ability, and stronger emulsification, dispersion and penetrating power are arranged, and can be used with mineral oil and silicone oil etc., can remedy the performances such as diffusion of other defoamer, and is cheap, has better economic and social benefit.
The specific embodiment
Embodiment 1
The present invention is formed by weight configuration by following composition:
Aliphatic acid: fatty acid amide: fatty acid ester: allyl alcohol: NaOH=160: 95: 102: 63: 48.
Embodiment 2
It is to form aliphatic acid by following composition by weight configuration: fatty acid amide: fatty acid ester: allyl alcohol: NaOH=180: 60: 150: 85: 40.
Embodiment 3
It is to form aliphatic acid by following composition by weight configuration: fatty acid amide: fatty acid ester: allyl alcohol: NaOH=100: 60: 80: 50: 40.
Embodiment 4
It is to form aliphatic acid by following composition by weight configuration: fatty acid amide: fatty acid ester: allyl alcohol: NaOH=220: 100: 150: 85: 70.
Claims (2)
1, a kind of fatty acid defoamer is characterized in that by following compositions by weight formulated aliphatic acid: fatty acid amide: fatty acid ester: allyl alcohol: NaOH=100-220: 60-100: 80-150: 50-85: 40-70.
2, fatty acid defoamer according to claim 1 is characterized in that the weight ratio of above-mentioned each raw material is aliphatic acid: fatty acid amide: fatty acid ester: allyl alcohol: NaOH=160: 95: 102: 63: 48.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810012577A CN101638867A (en) | 2008-08-01 | 2008-08-01 | Fatty acid defoamer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810012577A CN101638867A (en) | 2008-08-01 | 2008-08-01 | Fatty acid defoamer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101638867A true CN101638867A (en) | 2010-02-03 |
Family
ID=41614028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810012577A Pending CN101638867A (en) | 2008-08-01 | 2008-08-01 | Fatty acid defoamer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101638867A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118142219A (en) * | 2024-05-13 | 2024-06-07 | 江苏赛欧信越消泡剂有限公司 | Production process of high-carbon alcohol emulsion defoamer for membrane method sea water desalination process |
-
2008
- 2008-08-01 CN CN200810012577A patent/CN101638867A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118142219A (en) * | 2024-05-13 | 2024-06-07 | 江苏赛欧信越消泡剂有限公司 | Production process of high-carbon alcohol emulsion defoamer for membrane method sea water desalination process |
| CN118142219B (en) * | 2024-05-13 | 2024-08-06 | 江苏赛欧信越消泡剂有限公司 | Production process of high-carbon alcohol emulsion defoamer for membrane method sea water desalination process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100203 |