CN104420385A - Papermaking antifoaming agent - Google Patents
Papermaking antifoaming agent Download PDFInfo
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- CN104420385A CN104420385A CN201310360835.3A CN201310360835A CN104420385A CN 104420385 A CN104420385 A CN 104420385A CN 201310360835 A CN201310360835 A CN 201310360835A CN 104420385 A CN104420385 A CN 104420385A
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- fatty acid
- antifoaming agent
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Abstract
The present invention relates to a papermaking antifoaming agent, which comprises, by weight, (1) 100-230 parts of fatty acid, (2) 60-110 parts of fatty acid amide, (3) 80-140 parts of fatty acid ester, (4) 50-75 parts of allyl alcohol, (5) 40-75 parts of sodium hydroxide, (6) 1-6 parts of ethylene bis stearamide, (7) 2-8 parts of diglycol monoleate, and (8) 0.2-0.9 part of polydimethylsiloxane. According to the present invention, the papermaking antifoaming agent has characteristics of unique formula, excellent anti-foaming capacity, excellent foam inhibiting capacity, strong emulsification capacity, strong dispersion capacity and strong penetration capacity, can be matched with mineral oils, silicone oils and the like, can make up for diffusion and other performances of other anti-foaming agents, and further has characteristics of low price, good economic benefits and good social benefits.
Description
Technical field
The present invention relates to a kind of defoamer, particularly relate to a kind of foam-killing agent in paper-making, be applicable to soda pulping process and copy paper operation.
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 after boiling blowing, as washing, screening, bleaching, concentrated, pulp feeding system, top sizing, coating, black liquor recovery etc., be subject to the impact of foam all to some extent, interference is normal produces, paper quality is declined, production time serious, will be made to go on.The removing method of foam mainly contains chemical method, Physical and Mechanical Method.Chemistry froth breaking method is exactly add chemical substance (defoamer) in process of production to eliminate foam; Physical defoaming method utilizes and leaves standstill, heats or reduce pressure to eliminate foam; Mechanical defoaming method adopts mechanical force to make lather collapse exactly.Physical and Mechanical Method simple to operate, but passive, only takes stopgap measures and do not effect a permanent cure, and effect is undesirable.Current use is the most widely used is chemical froth breaking method, namely uses defoamer control the formation of foam in paper-making process and abolish established foam.
In pulping process, owing to containing the natural materials such as aliphatic acid, resin acid in pulping raw material, react with chemicalss such as the caustic soda added, akali sulphide and generate the foamer such as fatty acid soaps, resin acid soaps, add the steady bubble effect of the polymer substances such as cellulose, when the stream of slurry send and mixes, large quantity of air is brought into slurry system and just define foam stable in a large number, to subsequent handling as washing, conveying, bleaching etc. bring very large difficulty, cause laitance and pulp quality is reduced.Some factories adopt " clear water pressure bubble ", and this method is to certain effect that defoams, but de-bubble effect is unsatisfactory.The fatty acid soaps, resin acid soaps etc. of the black liquor that pulping process washs also containing high concentration bubbles and surely steeps material, for convenience of operation and raising paper pulp alkali recovery, also must carry out defoaming treatment to black liquor.
In the slip of copy paper operation, also contain the foaming similar to pulping process slip and surely steep material, also can be mixed into air and produce foam in operation, the existence of foam has a significant impact paper, make that degree of sizing is poor, cross direction ration homogeneity is poor, spot, diaphanous spot and small holes etc. appear in paper, even cause disconnected paper.In addition, if produce a large amount of foam in copy paper plain boiled water, also should add defoamer and get rid of, to improve the rate of recovery of paper pulp.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of with low cost, there is very strong froth breaking and press down bubble ability, and a kind of foam-killing agent in paper-making with low cost.
The technical scheme that the present invention realizes object is:
A kind of foam-killing agent in paper-making, its constituent and parts by weight as follows:
And wherein the most preferably parts by weight of ethylene bis stearamide, diglycol monotertiary olein, dimethicone are respectively 4 parts, 5 parts, 0.5 part.
Advantage of the present invention and beneficial effect are:
The present invention fills a prescription uniqueness, and the present invention has excellent defoaming capacity and presses down bubble ability, has stronger emulsification, dispersion and penetrating power, can with mineral oil and silicone oil etc. with the use of, the performances such as the diffusion of other defoamer can be made up, cheap, there is good economic and social benefit.
Detailed description of the invention
Below by specific embodiment, the invention will be further described, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
If no special instructions, the reagent used in the present invention is conventional reagent; If no special instructions, the method used is conventional method.
Embodiment 1
A kind of foam-killing agent in paper-making, its constituent and parts by weight as follows:
Embodiment 2
A kind of foam-killing agent in paper-making, its constituent and parts by weight as follows:
Embodiment 3
A kind of foam-killing agent in paper-making, its constituent and parts by weight as follows:
Claims (2)
1. a foam-killing agent in paper-making, is characterized in that: its constituent and parts by weight as follows:
2. a kind of foam-killing agent in paper-making according to claim 1, is characterized in that: wherein the most preferably parts by weight of ethylene bis stearamide, diglycol monotertiary olein, dimethicone are respectively 4 parts, 5 parts, 0.5 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310360835.3A CN104420385A (en) | 2013-08-19 | 2013-08-19 | Papermaking antifoaming agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310360835.3A CN104420385A (en) | 2013-08-19 | 2013-08-19 | Papermaking antifoaming agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104420385A true CN104420385A (en) | 2015-03-18 |
Family
ID=52970452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310360835.3A Pending CN104420385A (en) | 2013-08-19 | 2013-08-19 | Papermaking antifoaming agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104420385A (en) |
-
2013
- 2013-08-19 CN CN201310360835.3A patent/CN104420385A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |
|
| WD01 | Invention patent application deemed withdrawn after publication |