CN102424600A - Manufacturing method of controlled-release drag-reduction surface based on diatomite - Google Patents
Manufacturing method of controlled-release drag-reduction surface based on diatomite Download PDFInfo
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- CN102424600A CN102424600A CN2011102616781A CN201110261678A CN102424600A CN 102424600 A CN102424600 A CN 102424600A CN 2011102616781 A CN2011102616781 A CN 2011102616781A CN 201110261678 A CN201110261678 A CN 201110261678A CN 102424600 A CN102424600 A CN 102424600A
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Abstract
The invention relates to the field of biomimetic technologies, in particular to a manufacturing method of a drag-reduction surface, i.e., a manufacturing method of a controlled-release drag-reduction surface based on diatomite, comprising a diatomite solidifying process and an adsorption process, wherein the adsorption process comprises the following steps: (1) immersing a diatomite solidifying surface into deionized water at room temperature, carrying out ultrasonic washing for 10-20min and drying by using N2; (2) preparing a water solution of drag reducer; and (3) immersing the dried diatomite solidifying surface into the water solution of the drag reducer, carrying out degasification treatment in a vacuum drying box for 10-20 min, and taking out to obtain the controlled-release drag-reduction surface. By adopting the technical scheme, the biomimetic controlled-release drag-reduction surface based on diatomite, which is manufactured by the invention, has the advantages of improving the utilization efficiency of the drag reducer, reducing the using amount of the drag reducer, reducing the using and maintaining cost and the like.
Description
Technical field
The present invention relates to the bionics techniques field, be specifically related to a kind of making method of drag reduction surface.
Background technology
Utilizing the flow improver drag reduction is a kind of drag reduction method efficiently, is widely used in the fluid drag-reduction of submarine navigation device surface or long-distance transmission pipeline (oil transportation, gas, water etc.) inner-wall surface.Flow improver commonly used mainly contains SEPIGEL 305 (PAM) and aqueous epoxy resins etc., although drag reduction usefulness is high, price is comparatively expensive usually.Utilize the flow improver drag reduction to compare, have drag reduction efficiency height (drag reduction efficiency is usually more than 15%), be convenient to advantages such as enforcement with structure-type drag reduction methods such as utilizing groove.The enforcement of this drag reduction method mainly is employed in the ROV surface at present or the long distance pipeline inner-wall surface directly discharges or the mode of coating flow improver; Often make a large amount of flow improvers can not useful effect in the turbulent flow service area; Have deficiencies such as flow improver consumption is fast, consumption big, waste is serious, need constantly to replenish, thereby the operation and maintenance cost is higher relatively.
In addition, diatom is most important one of the quasi-microorganism that swims, and kind is many, quantity is big, it is extremely extensive to distribute.Diatom not only form is various, and common have sphere, dish type, round shape, rod, boat-shaped etc., and special material and structure are arranged.On material, the main chemical of diatom shell is a silicon-dioxide; Structurally, monomer diatom size is made up of the upper and lower shell face between several microns to tens microns, and enclosure interior has cavity structure, and surface of shell is covered with nanometer level microporous.
Zeyssatite is the silicastone that ancient times, the remains settling generated of diatom, mainly is made up of the siliceous remains of ancient times diatom and other mikrobes (radiolaria, sponge etc.), and main chemical is a silicon-dioxide.Zeyssatite exists as mineral products at occurring in nature in a large number, thereby wide material sources, cheap.Exquisiteness, light weight, porosity are big because zeyssatite has, adsorptivity and perviousness is strong, chemical property is stable, wear-resisting, heat-resisting, characteristics such as certain intensity are arranged, and are a kind of materials with significant application value.
Summary of the invention
The objective of the invention is to, a kind of making method based on diatomaceous slowly-releasing drag reduction surface is provided, to solve the problems of the technologies described above.
The technical problem that the present invention solved can adopt following technical scheme to realize:
Based on the making method of diatomaceous slowly-releasing drag reduction surface, comprise the zeyssatite curing process, it is characterized in that also be included in the absorbing process of zeyssatite solidified surface absorption flow improver, said absorbing process comprises the steps:
1) room temperature condition will adopt down in the zeyssatite solidified surface immersion deionized water that the zeyssatite curing process makes, and be that 800W～1200W, operating frequency are ultrasonic cleaning 10min～20min under the condition of 30KHz～50KHz at power, dry up with N2 then;
2) the preparation flow improver aqueous solution;
3) dried zeyssatite solidified surface is immersed the flow improver aqueous solution fully, placing then outgases in the vacuum drying oven handles 10min～20min, takes out then, just makes the slowly-releasing drag reduction surface.
The present invention utilizes the zeyssatite solidified surface to adsorb and the slowly-releasing flow improver; Can not only effectively improve the sticking power and the Rong Chiliang of flow improver; Can also reach slow release flow improver so that it all acts on the purpose of turbulent flow service area, thereby have and improve flow improver and utilize usefulness, reduce the flow improver consumption, reduce advantage such as operation and maintenance cost.
In the said absorbing process, step 2) the flow improver aqueous solution that adopts is SEPIGEL 305 (PAM) the flow improver aqueous solution.
The preparation method of the PAM flow improver aqueous solution is following: under the room temperature condition, in deionized water, slowly add SEPIGEL 305 (PAM) powder granule while stirring, the preparation mass percent concentration is 2% the PAM flow improver aqueous solution.
Said zeyssatite curing process adopts the method for high temperature sintering to process the zeyssatite solidified surface.The method of high temperature sintering can adopt sintering method commonly used, also can adopt following zeyssatite curing schedule:
1) zeyssatite pre-treatment:
(A) under the room temperature condition, be immersion treatment 3min～5min in 1.5%～3.5% the HF solution at mass percent concentration, use the filter cloth of 5 μ m～20 μ m to filter then, obtain the first zeyssatite mixture zeyssatite;
(B) be under 80 ℃～90 ℃ conditions with the said first zeyssatite mixture in temperature; Immersion treatment 10min～20min in NH4, H2O2, H2O mixed solution (1: 2: 7); Use the filter cloth of 5 μ m～20 μ m to filter then, obtain the second zeyssatite mixture;
(C) the said second zeyssatite mixture is added deionized water at ambient temperature; At power is that 800W～1200W, operating frequency are under the condition of 30KHz～50KHz; Ultrasonic cleaning 10min～20min uses the filter cloth of 5 μ m～20 μ m to filter then, obtains the 3rd zeyssatite mixture;
(D) said the 3rd zeyssatite mixture is dried up with N2 at ambient temperature, obtain the 4th zeyssatite mixture;
2) the wet base of zeyssatite is made:
(A) under the room temperature condition, with 1) said the 4th zeyssatite mixture that obtains of step adds deionized water, and the preparation solid content is 50%～70% zeyssatite mud, old then 1d;
(B) in the mould of definite shape, adopt slip-casting shaping process to produce the wet base of zeyssatite;
(C) under the room temperature condition, the wet base of said zeyssatite is carried out preliminary natural air drying, water ratio is controlled at 60%～80%;
3) the wet base high temperature sintering of zeyssatite solidifies:
(A) with 2) the wet base of the said zeyssatite that makes of step puts into high temperature sintering furnace, in 1050 ℃～1150 ℃ TRs, carries out constant temperature sintering processes 1.5h～2.5h;
(B) slowly be cooled to the demoulding after the room temperature, promptly obtain the zeyssatite solidified surface.
The zeyssatite that the present invention adopts above-mentioned technology still can keep its vesicular structure after high temperature sintering solidifies, prepared zeyssatite solidified surface still has bigger pore volume, stronger adsorptivity and slow-releasing.
In the said zeyssatite curing process, 2) mould of step can be different according to the shape of the zeyssatite solidified surface that will make, like tabular or pipe shape, can be arbitrarily mold exchange more.
For ease of the demoulding, in the step 2, should apply one deck mass percent concentration at mould inner surface in advance is 80% the SP 1 aqueous solution.
Be provided with the sintering oven pedestal in the said high temperature sintering furnace, mould is arranged on the said sintering oven pedestal, is provided with the wet base of zeyssatite in the mould.Zeyssatite solidified surface behind high temperature sintering, its solidification intensity is at 30Mpa～40MPa, and porosity is 40%～60%.The zeyssatite solidified surface space that makes is big, adsorptivity is strong, can have good slow-releasing.
Beneficial effect: owing to adopt technique scheme, made of the present invention based on diatomaceous bionical slowly-releasing drag reduction surface, drag reducing efficiency is 15%～25%.Have the flow improver of raising and utilize advantages such as usefulness, minimizing flow improver consumption, reduction operation and maintenance cost.
Description of drawings
Fig. 1 is a schema of the present invention;
Fig. 2 solidifies synoptic diagram for zeyssatite high temperature sintering of the present invention;
Fig. 3 is the zeyssatite solidified surface structural representation behind the sintering of the present invention.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, further set forth the present invention below in conjunction with concrete diagram.
With reference to Fig. 1, based on the making method of diatomaceous slowly-releasing drag reduction surface, comprise zeyssatite curing process 1, also comprise absorbing process 2, absorbing process 2 comprises the steps:
The first step: the zeyssatite solidified surface that room temperature condition will adopt zeyssatite curing process 1 to make down immerses in the deionized water; At power is that 800W～1200W, operating frequency are ultrasonic cleaning 10min～20min under the condition of 30KHz～50KHz, dries up with N2 then.
Second step: the preparation flow improver aqueous solution.The flow improver aqueous solution is SEPIGEL 305 (PAM) the flow improver aqueous solution.The preparation method of the PAM flow improver aqueous solution is following: under the room temperature condition, in deionized water, slowly add SEPIGEL 305 (PAM) powder granule while stirring, the preparation mass percent concentration is 2% the PAM flow improver aqueous solution.
The 3rd step: dried zeyssatite solidified surface is immersed the flow improver aqueous solution fully, and placing then outgases in the vacuum drying oven handles 10min～20min, takes out then, just makes the slowly-releasing drag reduction surface.
The present invention utilizes the zeyssatite solidified surface to adsorb and the slowly-releasing flow improver; Can not only effectively improve the sticking power and the Rong Chiliang of flow improver; Can also reach slow release flow improver so that it all acts on the purpose of turbulent flow service area, thereby have and improve flow improver and utilize usefulness, reduce the flow improver consumption, reduce advantage such as operation and maintenance cost.
Zeyssatite curing process 1 adopts the method for high temperature sintering to process the zeyssatite solidified surface.The method of high temperature sintering can adopt sintering method commonly used, also can adopt following zeyssatite curing schedule:
The first step: zeyssatite pre-treatment: (A) under the room temperature condition, be immersion treatment 3min～5min in 1.5%～3.5% the HF solution at mass percent concentration, use the filter cloth of 5 μ m～20 μ m to filter then, obtain the first zeyssatite mixture with zeyssatite.(B) be under 80 ℃～90 ℃ conditions with the first zeyssatite mixture in temperature, immersion treatment 10min～20min in NH4, H2O2, H2O mixed solution (1: 2: 7) uses the filter cloth of 5 μ m～20 μ m to filter then, obtains the second zeyssatite mixture.(C) the second zeyssatite mixture is added deionized water at ambient temperature; At power is that 800W～1200W, operating frequency are under the condition of 30KHz～50KHz; Ultrasonic cleaning 10min～20min uses the filter cloth of 5 μ m～20 μ m to filter then, obtains the 3rd zeyssatite mixture.(D) the 3rd zeyssatite mixture is dried up with N2 at ambient temperature, obtain the 4th zeyssatite mixture.
Second step: the wet base of zeyssatite is made: (A) under the room temperature condition, with 1) the 4th zeyssatite mixture that obtains of step adds deionized water, and the preparation solid content is 50%～70% zeyssatite mud, old then 1d.(B) in the mould of definite shape, adopt slip-casting shaping process to produce the wet base of zeyssatite.Mould can be different according to the shape of the zeyssatite solidified surface that will make, like tabular or pipe shape, can be arbitrarily mold exchange more.For ease of the demoulding, should be 80% the SP 1 aqueous solution in advance at the very thin one deck mass percent concentration of the even coating of mould inner surface.(C) under the room temperature condition, the wet base of zeyssatite is carried out preliminary natural air drying, water ratio is controlled at 60%～80%.
The 3rd step: the wet base high temperature sintering of zeyssatite solidifies: (A) with 2) the wet base of zeyssatite that makes of step puts into high temperature sintering furnace, in 1050 ℃～1150 ℃ TRs, carries out constant temperature sintering processes 1.5h～2.5h.With reference to Fig. 2, be provided with sintering oven pedestal 31 in the high temperature sintering furnace 3, mould 4 is arranged on the sintering oven pedestal 31, is provided with the wet base of zeyssatite in the mould 4.(B) slowly be cooled to the demoulding after the room temperature, promptly obtain the zeyssatite solidified surface.
With reference to Fig. 3, the zeyssatite that the present invention adopts above-mentioned technology after high temperature sintering solidifies at the structural representation of microscopically.The zeyssatite solidified surface that adopts above-mentioned zeyssatite curing process to make still can keep its vesicular structure, still has bigger pore volume, stronger adsorptivity and slow-releasing.The slowly-releasing drag reduction surface that the present invention makes need can be used to the place of drag reduction, such as be arranged on the conveying pipeline inner wall, the submarine navigation device outside surface.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification sheets just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (7)
1. based on the making method of diatomaceous slowly-releasing drag reduction surface, comprise the zeyssatite curing process, it is characterized in that also be included in the absorbing process of zeyssatite solidified surface absorption flow improver, said absorbing process comprises the steps:
1) room temperature condition will adopt down in the zeyssatite solidified surface immersion deionized water that the zeyssatite curing process makes, and be that 800W～1200W, operating frequency are ultrasonic cleaning 10min～20min under the condition of 30KHz～50KHz at power, dry up with N2 then;
2) the preparation flow improver aqueous solution;
3) dried zeyssatite solidified surface is immersed the flow improver aqueous solution, placing then outgases in the vacuum drying oven handles 10min～20min, takes out then, just makes the slowly-releasing drag reduction surface.
2. the making method based on diatomaceous slowly-releasing drag reduction surface according to claim 1 is characterized in that: in the said absorbing process, step 2) the flow improver aqueous solution that adopts is the SEPIGEL 305 flow improver aqueous solution.
3. the making method based on diatomaceous slowly-releasing drag reduction surface according to claim 2; It is characterized in that: the preparation method of the SEPIGEL 305 flow improver aqueous solution is following: under the room temperature condition; In deionized water; Slowly add the SEPIGEL 305 powder granule while stirring, the preparation mass percent concentration is 2% the SEPIGEL 305 flow improver aqueous solution.
4. according to claim 1,2 or 3 described making methods based on diatomaceous slowly-releasing drag reduction surface, it is characterized in that: said zeyssatite curing process adopts the method for high temperature sintering to process the zeyssatite solidified surface.
5. the making method based on diatomaceous slowly-releasing drag reduction surface according to claim 4 is characterized in that: the method for high temperature sintering adopts following zeyssatite curing schedule:
1) zeyssatite pre-treatment:
(A) under the room temperature condition, be immersion treatment 3min～5min in 1.5%～3.5% the HF solution at mass percent concentration, use the filter cloth of 5 μ m～20 μ m to filter then, obtain the first zeyssatite mixture zeyssatite;
(B) be under 80 ℃～90 ℃ conditions with the said first zeyssatite mixture in temperature, immersion treatment 10min～20min in NH4, H2O2, H2O mixed solution uses the filter cloth of 5 μ m～20 μ m to filter then, obtains the second zeyssatite mixture;
(C) the said second zeyssatite mixture is added deionized water at ambient temperature; At power is that 800W～1200W, operating frequency are under the condition of 30KHz～50KHz; Ultrasonic cleaning 10min～20min uses the filter cloth of 5 μ m～20 μ m to filter then, obtains the 3rd zeyssatite mixture;
(D) said the 3rd zeyssatite mixture is dried up with N2 at ambient temperature, obtain the 4th zeyssatite mixture;
2) the wet base of zeyssatite is made:
(A) under the room temperature condition, with 1) said the 4th zeyssatite mixture that obtains of step adds deionized water, and the preparation solid content is 50%～70% zeyssatite mud, old then 1d;
(B) in the mould of definite shape, adopt slip-casting shaping process to produce the wet base of zeyssatite;
(C) under the room temperature condition, the wet base of said zeyssatite is carried out preliminary natural air drying, water ratio is controlled at 60%～80%;
3) the wet base high temperature sintering of zeyssatite solidifies:
(A) with 2) the wet base of the said zeyssatite that makes of step puts into high temperature sintering furnace, in 1050 ℃～1150 ℃ TRs, carries out constant temperature sintering processes 1.5h～2.5h;
(B) slowly be cooled to the demoulding after the room temperature, promptly obtain the zeyssatite solidified surface.
6. the making method based on diatomaceous slowly-releasing drag reduction surface according to claim 5; It is characterized in that: in the said zeyssatite curing process; For ease of the demoulding, in the step 2, be 80% the SP 1 aqueous solution in advance at mould inner surface coating one deck mass percent concentration.
7. the making method based on diatomaceous slowly-releasing drag reduction surface according to claim 5 is characterized in that: be provided with the sintering oven pedestal in the said high temperature sintering furnace, mould is arranged on the said sintering oven pedestal, is provided with the wet base of zeyssatite in the mould.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2234030Y (en) * | 1995-11-27 | 1996-08-28 | 金从兵 | Compound pipe line |
| US20070004837A1 (en) * | 2005-07-01 | 2007-01-04 | Petrochina Company Limited | Oil-based dispersing method of drag reduction polymers |
| CN101531553A (en) * | 2009-03-25 | 2009-09-16 | 吉林省嘉鹏巨森肥业有限公司 | Slow controlled release diatomite fertilizer |
| CN102060561A (en) * | 2010-11-19 | 2011-05-18 | 西安理工大学 | Preparation method of porous diatomite-based AgO ceramic material |
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2011
- 2011-09-06 CN CN2011102616781A patent/CN102424600B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2234030Y (en) * | 1995-11-27 | 1996-08-28 | 金从兵 | Compound pipe line |
| US20070004837A1 (en) * | 2005-07-01 | 2007-01-04 | Petrochina Company Limited | Oil-based dispersing method of drag reduction polymers |
| CN101531553A (en) * | 2009-03-25 | 2009-09-16 | 吉林省嘉鹏巨森肥业有限公司 | Slow controlled release diatomite fertilizer |
| CN102060561A (en) * | 2010-11-19 | 2011-05-18 | 西安理工大学 | Preparation method of porous diatomite-based AgO ceramic material |
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Granted publication date: 20130403 Termination date: 20130906 |