CN104988517A - Acidic disincrustant and preparation method thereof - Google Patents
Acidic disincrustant and preparation method thereof Download PDFInfo
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- CN104988517A CN104988517A CN201510450817.3A CN201510450817A CN104988517A CN 104988517 A CN104988517 A CN 104988517A CN 201510450817 A CN201510450817 A CN 201510450817A CN 104988517 A CN104988517 A CN 104988517A
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Abstract
The invention relates to an acidic disincrustant and a preparation method thereof. The acidic disincrustant is prepared from the following components in parts by weight: 10-20 parts of hydrochloric acid, 3-8 parts of hydrofluoric acid, 2-6 parts of di-o-tolyl-thiourea, 25-35 parts of dodecyl benzene sodium sulfonate, 8-12 parts of sodium glycollate, 11-15 parts of sulphamic acid, 3-7 parts of citric acid, 2-5 parts of ethanol, 0.2-0.4 part of zinc sulfate, and 0.1-0.3 part of trisodium phosphate. According to the acidic disincrustant and the preparation method thereof, disclosed by the invention, the advantages and the disadvantages of mineral acid and organic acid for scale removal are combined to obtain the best component proportioning, the advantages of the organic acid and the mineral acid are fully utilized, and the disadvantages of the organic acid and the mineral acid are overcome; the components are common in market condition and are common industrial chemicals, wherein the hydrochloric acid can use waste hydrochloric acid generated during industrial production, so that the use cost is further reduced. The preparation method disclosed can be performed under normal pressure, and the preparation technology is simple. Therefore, the acidic disincrustant and the preparation method thereof, disclosed by the invention, have the advantages of being low in cost, convenient to use, wide in application scope, high in cleaning efficiency, and simple in preparation technology .
Description
Technical field
The invention belongs to chemical production technical field, be specifically related to a kind of chemical, particularly a kind of acidic descaling agent cleaned for the pipeline in chemical industry equipment, condenser etc. and preparation method thereof.
Background technology
The relation of the mankind and chemical industry is very close, spreads to the every aspect of life.In the modern life, almost all be unable to do without Chemicals whenever and wherever possible, from material lifes such as clothing, food, shelter, row to the cultural life such as culture and arts, amusement, all need Chemicals to serve for it.Some Chemicals, in human development history, plays epoch-making vital role.Their production and application, even represent certain historical stage of human civilization.
China's oil and chemical industry major economic indicators account for very important status in national industrial trade.The ratio that the whole industry in 2004 adds up to realize present price gross industrial output value, industrial added value, product sales revenue, these 4 indexs of total profit account for nationwide above industrial enterprise is respectively 13.2%, 14%, 12.9% and 24.6%.1/4 of Chinese industrial profit derives from oil and chemical industry, and its importance and functions is irreplaceable.China's various Chemicals output is at the forefront in the world.Wherein chemical fertilizer, synthetic ammonia, soda ash, sulfuric acid, dyestuff, phosphorus ore, synthon, rubber overshoes equal yield line occupy first; Agricultural chemicals, caustic soda, tire equal yield line occupy second place of the world; Crude oil processing, ethene, coating etc. occupy third place in the world; Crude oil, to close the capacity and outputs such as fine monomer, synthetic rubber, synthetic resins all at the forefront in the world.In Chemical Manufacture, due to the singularity of chemical material, the very easy foulings such as the equipment therefore in Chemical Manufacture, pipeline, condenser, not only affect heat trnasfer after fouling but also affect the transmission speed of material, can affect normal production when fouling is serious.Therefore, in order to ensure normal need of production, regularly to carry out dirty removing processing to equipment, scale removal mainly adopts scale remover, existing scale remover of a great variety, but also exist expensive, use inconvenience, the scope of application is little, cleaning efficiency is slow, the shortcoming of complicated process of preparation; Therefore exploitation one is cheap, easy to use, applied widely, cleaning efficiency is fast, the simple acidic descaling agent of preparation technology is of great practical significance.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art and provide a kind of cheap, easy to use, applied widely, cleaning efficiency is fast, the simple acidic descaling agent of preparation technology and preparation method thereof.
Technical solution of the present invention is: a kind of acidic descaling agent, and it is made up according to following weight proportion of each component: hydrochloric acid 10-20 part, hydrofluoric acid 3-8 part, di-o-tolyl-thiourea 2-6 part, Sodium dodecylbenzene sulfonate 25-35 part, hydroxy acid sodium 8-12 part, thionamic acid 11-15 part, citric acid 3-7 part, ethanol 2-5 part, zinc sulfate 0.2-0.4 part, tertiary sodium phosphate 0.1-0.3 part.
Described a kind of acidic descaling agent, it is prepared from by the raw material of following weight part: hydrochloric acid 15 parts, 5 parts, hydrofluoric acid, di-o-tolyl-thiourea 4 parts, Sodium dodecylbenzene sulfonate 30 parts, hydroxy acid sodium 10 parts, thionamic acid 13 parts, citric acid 5 parts, ethanol 3 parts, 0.3 part, zinc sulfate, tertiary sodium phosphate 0.2 part.
The preparation method of above-mentioned acidic descaling agent, this preparation method comprise the steps: first according to registration for raw material, then in reactor, ready hydrochloric acid, hydrofluoric acid, ethanol, thionamic acid, citric acid, di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium, tertiary sodium phosphate and zinc sulfate is added successively, continuously stirring in reinforced process, and the temperature controlling mixed solution is at 60 DEG C-80 DEG C; Finally be cooled to 60 DEG C, stop stirring, release filling.
The present invention has the following advantages: the hydrochloric acid in instant component and hydrofluoric acid are mineral acid, thionamic acid and citric acid are organic acid, di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium and tertiary sodium phosphate use as buffer reagent, zinc sulfate uses as metal surface protectant, and ethanol is as solubility promoter, the present invention is combined with mineral acid and organic acid, and mineral acid scale removal has the advantage that cleansing power is strong, descale effect is fast, scale removal is thorough, applied widely, but mineral acid scale removal has the coarse shortcoming of easy etching apparatus, scale removal, organic acid scale removal has scale removal not etching apparatus, the advantage that scale removal is careful, but organic acid has cleansing power difference, descale effect is slow, the shortcoming of narrow application range, the present invention obtains best component proportion in conjunction with mineral acid and organic acid in the relative merits of scale removal, give full play to the advantage of organic acid and mineral acid, suppress the shortcoming of organic acid and mineral acid, in addition, the present invention chooses di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium and tertiary sodium phosphate are as buffer reagent, strong acid salt and salt of weak acid is included in selected buffer reagent, can better be in harmonious proportion the balance of organic acid and mineral acid like this, make scale remover of the present invention more stable, performance is better, adopt ethanol as solubility promoter, make like this can mix fully between component of the present invention, can mix with organic and inorganic solution in use, and then improve the scope of application of the present invention, zinc sulfate uses as metal surface protectant, and the present invention can be made to protect metal pipe internal wall in scale removal simultaneously, reduces the corrosion of metal pipe internal wall, and then plays the effect of protection metallic conduit, each component of the present invention is industrial chemicals common and conventional on the market, and wherein hydrochloric acid can use the waste hydrochloric acid in industrial production, and then makes use cost of the present invention more cheap, also have preparation of the present invention to carry out all at ambient pressure, preparation technology is simple, to sum up, the present invention have cheap, easy to use, applied widely, cleaning efficiency is fast, the simple advantage of preparation technology.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
Embodiment 1
Get hydrochloric acid 10kg, hydrofluoric acid 3kg, di-o-tolyl-thiourea 2kg, Sodium dodecylbenzene sulfonate 25kg, hydroxy acid sodium 8kg, thionamic acid 11kg, citric acid 3kg, ethanol 2kg, zinc sulfate 0.2kg, tertiary sodium phosphate 0.1kg.
First according to the raw material of above-mentioned preparation, ready hydrochloric acid, hydrofluoric acid, ethanol, thionamic acid, citric acid, di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium, tertiary sodium phosphate and zinc sulfate is added successively in reactor, continuously stirring in reinforced process, and the temperature controlling mixed solution is at 60 DEG C-80 DEG C; Finally be cooled to 60 DEG C, stop stirring, release filling;
In use, the acidic descaling agent of above-mentioned preparation is joined with piping loop in equipment pipe, in working cycle, dirty removing processing is carried out to inner-walls of duct, contrast is carried out to scale remover of the present invention and conventional scale remover below as follows:
Can draw from upper table, the rust cleaning speed of acidic descaling agent of the present invention is all a lot of soon than the speed of conventional scale remover, and for the scale removal efficiency during scale removal of variant production production unit and descale effect all fine.
Hydrochloric acid in instant component and hydrofluoric acid are mineral acid, thionamic acid and citric acid are organic acid, di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium and tertiary sodium phosphate use as buffer reagent, and zinc sulfate uses as metal surface protectant, and ethanol is as solubility promoter; The present invention obtains best component proportion in conjunction with mineral acid and organic acid in the relative merits of scale removal, give full play to the advantage of organic acid and mineral acid, suppress the shortcoming of organic acid and mineral acid, in addition, the present invention chooses di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium and tertiary sodium phosphate as buffer reagent, include strong acid salt and salt of weak acid in selected buffer reagent, can better be in harmonious proportion the balance of organic acid and mineral acid like this, make that scale remover of the present invention is more stable, performance is better; Adopt ethanol as solubility promoter, make like this can mix fully between component of the present invention, can mix with organic and inorganic solution in use, and then improve the scope of application of the present invention; Zinc sulfate uses as metal surface protectant, and the present invention can be made to protect metal pipe internal wall in scale removal simultaneously, reduces the corrosion of metal pipe internal wall, and then plays the effect of protection metallic conduit; Each component of the present invention is industrial chemicals common and conventional on the market, and wherein hydrochloric acid can use the waste hydrochloric acid in industrial production, and then makes use cost of the present invention more cheap; Also have preparation of the present invention to carry out all at ambient pressure, preparation technology is simple; To sum up, the present invention have cheap, easy to use, applied widely, cleaning efficiency is fast, the simple advantage of preparation technology.
Embodiment 2
Get hydrochloric acid 12kg, hydrofluoric acid 4kg, di-o-tolyl-thiourea 3kg, Sodium dodecylbenzene sulfonate 28kg, hydroxy acid sodium 9kg, thionamic acid 12kg, citric acid 4kg, ethanol 3kg, zinc sulfate 0.25kg, tertiary sodium phosphate 0.15kg.
First according to the raw material of above-mentioned preparation, ready hydrochloric acid, hydrofluoric acid, ethanol, thionamic acid, citric acid, di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium, tertiary sodium phosphate and zinc sulfate is added successively in reactor, continuously stirring in reinforced process, and the temperature controlling mixed solution is at 60 DEG C-80 DEG C; Finally be cooled to 60 DEG C, stop stirring, release filling;
In use, the acidic descaling agent of above-mentioned preparation is joined with piping loop in equipment pipe, in working cycle, dirty removing processing is carried out to inner-walls of duct, contrast is carried out to scale remover of the present invention and conventional scale remover below as follows:
Can draw from upper table, the rust cleaning speed of acidic descaling agent of the present invention is all a lot of soon than the speed of conventional scale remover, and for the scale removal efficiency during scale removal of variant production production unit and descale effect all fine.
Hydrochloric acid in instant component and hydrofluoric acid are mineral acid, thionamic acid and citric acid are organic acid, di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium and tertiary sodium phosphate use as buffer reagent, and zinc sulfate uses as metal surface protectant, and ethanol is as solubility promoter; The present invention obtains best component proportion in conjunction with mineral acid and organic acid in the relative merits of scale removal, give full play to the advantage of organic acid and mineral acid, suppress the shortcoming of organic acid and mineral acid, in addition, the present invention chooses di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium and tertiary sodium phosphate as buffer reagent, include strong acid salt and salt of weak acid in selected buffer reagent, can better be in harmonious proportion the balance of organic acid and mineral acid like this, make that scale remover of the present invention is more stable, performance is better; Adopt ethanol as solubility promoter, make like this can mix fully between component of the present invention, can mix with organic and inorganic solution in use, and then improve the scope of application of the present invention; Zinc sulfate uses as metal surface protectant, and the present invention can be made to protect metal pipe internal wall in scale removal simultaneously, reduces the corrosion of metal pipe internal wall, and then plays the effect of protection metallic conduit; Each component of the present invention is industrial chemicals common and conventional on the market, and wherein hydrochloric acid can use the waste hydrochloric acid in industrial production, and then makes use cost of the present invention more cheap; Also have preparation of the present invention to carry out all at ambient pressure, preparation technology is simple; To sum up, the present invention have cheap, easy to use, applied widely, cleaning efficiency is fast, the simple advantage of preparation technology.
Embodiment 3
Get hydrochloric acid 15kg, hydrofluoric acid 5kg, di-o-tolyl-thiourea 4kg, Sodium dodecylbenzene sulfonate 30kg, hydroxy acid sodium 10kg, thionamic acid 13kg, citric acid 5kg, ethanol 3kg, zinc sulfate 0.3kg, tertiary sodium phosphate 0.2kg.
First according to the raw material of above-mentioned preparation, ready hydrochloric acid, hydrofluoric acid, ethanol, thionamic acid, citric acid, di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium, tertiary sodium phosphate and zinc sulfate is added successively in reactor, continuously stirring in reinforced process, and the temperature controlling mixed solution is at 60 DEG C-80 DEG C; Finally be cooled to 60 DEG C, stop stirring, release filling;
In use, the acidic descaling agent of above-mentioned preparation is joined with piping loop in equipment pipe, in working cycle, dirty removing processing is carried out to inner-walls of duct, contrast is carried out to scale remover of the present invention and conventional scale remover below as follows:
Can draw from upper table, the rust cleaning speed of acidic descaling agent of the present invention is all a lot of soon than the speed of conventional scale remover, and for the scale removal efficiency during scale removal of variant production production unit and descale effect all fine.
Hydrochloric acid in instant component and hydrofluoric acid are mineral acid, thionamic acid and citric acid are organic acid, di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium and tertiary sodium phosphate use as buffer reagent, and zinc sulfate uses as metal surface protectant, and ethanol is as solubility promoter; The present invention obtains best component proportion in conjunction with mineral acid and organic acid in the relative merits of scale removal, give full play to the advantage of organic acid and mineral acid, suppress the shortcoming of organic acid and mineral acid, in addition, the present invention chooses di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium and tertiary sodium phosphate as buffer reagent, include strong acid salt and salt of weak acid in selected buffer reagent, can better be in harmonious proportion the balance of organic acid and mineral acid like this, make that scale remover of the present invention is more stable, performance is better; Adopt ethanol as solubility promoter, make like this can mix fully between component of the present invention, can mix with organic and inorganic solution in use, and then improve the scope of application of the present invention; Zinc sulfate uses as metal surface protectant, and the present invention can be made to protect metal pipe internal wall in scale removal simultaneously, reduces the corrosion of metal pipe internal wall, and then plays the effect of protection metallic conduit; Each component of the present invention is industrial chemicals common and conventional on the market, and wherein hydrochloric acid can use the waste hydrochloric acid in industrial production, and then makes use cost of the present invention more cheap; Also have preparation of the present invention to carry out all at ambient pressure, preparation technology is simple; To sum up, the present invention have cheap, easy to use, applied widely, cleaning efficiency is fast, the simple advantage of preparation technology.
Embodiment 4
Get hydrochloric acid 17kg, hydrofluoric acid 6kg, di-o-tolyl-thiourea 5kg, Sodium dodecylbenzene sulfonate 32kg, hydroxy acid sodium 11kg, thionamic acid 14kg, citric acid 6kg, ethanol 4kg, zinc sulfate 0.35kg, tertiary sodium phosphate 0.25kg.
First according to the raw material of above-mentioned preparation, ready hydrochloric acid, hydrofluoric acid, ethanol, thionamic acid, citric acid, di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium, tertiary sodium phosphate and zinc sulfate is added successively in reactor, continuously stirring in reinforced process, and the temperature controlling mixed solution is at 60 DEG C-80 DEG C; Finally be cooled to 60 DEG C, stop stirring, release filling;
In use, the acidic descaling agent of above-mentioned preparation is joined with piping loop in equipment pipe, in working cycle, dirty removing processing is carried out to inner-walls of duct, contrast is carried out to scale remover of the present invention and conventional scale remover below as follows:
Can draw from upper table, the rust cleaning speed of acidic descaling agent of the present invention is all a lot of soon than the speed of conventional scale remover, and for the scale removal efficiency during scale removal of variant production production unit and descale effect all fine.
Hydrochloric acid in instant component and hydrofluoric acid are mineral acid, thionamic acid and citric acid are organic acid, di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium and tertiary sodium phosphate use as buffer reagent, and zinc sulfate uses as metal surface protectant, and ethanol is as solubility promoter; The present invention obtains best component proportion in conjunction with mineral acid and organic acid in the relative merits of scale removal, give full play to the advantage of organic acid and mineral acid, suppress the shortcoming of organic acid and mineral acid, in addition, the present invention chooses di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium and tertiary sodium phosphate as buffer reagent, include strong acid salt and salt of weak acid in selected buffer reagent, can better be in harmonious proportion the balance of organic acid and mineral acid like this, make that scale remover of the present invention is more stable, performance is better; Adopt ethanol as solubility promoter, make like this can mix fully between component of the present invention, can mix with organic and inorganic solution in use, and then improve the scope of application of the present invention; Zinc sulfate uses as metal surface protectant, and the present invention can be made to protect metal pipe internal wall in scale removal simultaneously, reduces the corrosion of metal pipe internal wall, and then plays the effect of protection metallic conduit; Each component of the present invention is industrial chemicals common and conventional on the market, and wherein hydrochloric acid can use the waste hydrochloric acid in industrial production, and then makes use cost of the present invention more cheap; Also have preparation of the present invention to carry out all at ambient pressure, preparation technology is simple; To sum up, the present invention have cheap, easy to use, applied widely, cleaning efficiency is fast, the simple advantage of preparation technology.
Embodiment 5
Get hydrochloric acid 20kg, hydrofluoric acid 8kg, di-o-tolyl-thiourea 6kg, Sodium dodecylbenzene sulfonate 35kg, hydroxy acid sodium 12kg, thionamic acid 15kg, citric acid 7kg, ethanol 5kg, zinc sulfate 0.4kg, tertiary sodium phosphate 0.3kg.
First according to the raw material of above-mentioned preparation, ready hydrochloric acid, hydrofluoric acid, ethanol, thionamic acid, citric acid, di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium, tertiary sodium phosphate and zinc sulfate is added successively in reactor, continuously stirring in reinforced process, and the temperature controlling mixed solution is at 60 DEG C-80 DEG C; Finally be cooled to 60 DEG C, stop stirring, release filling;
In use, the acidic descaling agent of above-mentioned preparation is joined with piping loop in equipment pipe, in working cycle, dirty removing processing is carried out to inner-walls of duct, contrast is carried out to scale remover of the present invention and conventional scale remover below as follows:
Can draw from upper table, the rust cleaning speed of acidic descaling agent of the present invention is all a lot of soon than the speed of conventional scale remover, and for the scale removal efficiency during scale removal of variant production production unit and descale effect all fine.
Hydrochloric acid in instant component and hydrofluoric acid are mineral acid, thionamic acid and citric acid are organic acid, di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium and tertiary sodium phosphate use as buffer reagent, and zinc sulfate uses as metal surface protectant, and ethanol is as solubility promoter; The present invention obtains best component proportion in conjunction with mineral acid and organic acid in the relative merits of scale removal, give full play to the advantage of organic acid and mineral acid, suppress the shortcoming of organic acid and mineral acid, in addition, the present invention chooses di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium and tertiary sodium phosphate as buffer reagent, include strong acid salt and salt of weak acid in selected buffer reagent, can better be in harmonious proportion the balance of organic acid and mineral acid like this, make that scale remover of the present invention is more stable, performance is better; Adopt ethanol as solubility promoter, make like this can mix fully between component of the present invention, can mix with organic and inorganic solution in use, and then improve the scope of application of the present invention; Zinc sulfate uses as metal surface protectant, and the present invention can be made to protect metal pipe internal wall in scale removal simultaneously, reduces the corrosion of metal pipe internal wall, and then plays the effect of protection metallic conduit; Each component of the present invention is industrial chemicals common and conventional on the market, and wherein hydrochloric acid can use the waste hydrochloric acid in industrial production, and then makes use cost of the present invention more cheap; Also have preparation of the present invention to carry out all at ambient pressure, preparation technology is simple; To sum up, the present invention have cheap, easy to use, applied widely, cleaning efficiency is fast, the simple advantage of preparation technology.
Claims (3)
1. an acidic descaling agent, is characterized in that: it is prepared from by the raw material of following weight part: hydrochloric acid 10-20 part, hydrofluoric acid 3-8 part, di-o-tolyl-thiourea 2-6 part, Sodium dodecylbenzene sulfonate 25-35 part, hydroxy acid sodium 8-12 part, thionamic acid 11-15 part, citric acid 3-7 part, ethanol 2-5 part, zinc sulfate 0.2-0.4 part, tertiary sodium phosphate 0.1-0.3 part.
2. a kind of acidic descaling agent as claimed in claim 1, is characterized in that: it is prepared from by the raw material of following weight part: hydrochloric acid 15 parts, 5 parts, hydrofluoric acid, di-o-tolyl-thiourea 4 parts, Sodium dodecylbenzene sulfonate 30 parts, hydroxy acid sodium 10 parts, thionamic acid 13 parts, citric acid 5 parts, ethanol 3 parts, 0.3 part, zinc sulfate, tertiary sodium phosphate 0.2 part.
3. the preparation method of an acidic descaling agent as claimed in claim 1 or 2, it is characterized in that: described preparation method comprise the steps: first according to registration for raw material, then in reactor, ready hydrochloric acid, hydrofluoric acid, ethanol, thionamic acid, citric acid, di-o-tolyl-thiourea, Sodium dodecylbenzene sulfonate, hydroxy acid sodium, tertiary sodium phosphate and zinc sulfate is added successively, continuously stirring in reinforced process, and the temperature controlling mixed solution is at 60 DEG C-80 DEG C; Finally be cooled to 60 DEG C, stop stirring, release filling.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106367213A (en) * | 2016-08-29 | 2017-02-01 | 山东胜伟园林科技有限公司 | Scale inhibitor for acid soil and preparation method thereof |
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