CN1948151A - Method of manufacturing silica gel special for oil removing and its use - Google Patents
Method of manufacturing silica gel special for oil removing and its use Download PDFInfo
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- CN1948151A CN1948151A CN 200610069537 CN200610069537A CN1948151A CN 1948151 A CN1948151 A CN 1948151A CN 200610069537 CN200610069537 CN 200610069537 CN 200610069537 A CN200610069537 A CN 200610069537A CN 1948151 A CN1948151 A CN 1948151A
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Abstract
The present invention provides a preparation method of special-purpose degreasing silica gel. Said preparation method mainly includes the following steps: soaking granulation-formed hydrogel for 20-45 h and soaking temperature is 25-80 deg.C; using running water to wash the above-mentioned hydrogel, retaining water temperature at 20-80 deg.C, washing for 2-10 times, every washing time is 2-6 h until its pH value is greater than 5; then soaking the primary gel particles in the alkaline metal hydroxide solution or carbonate solution of alkali metal, pH value of soaking solution is 9-14 and soaking time is 4-18 h, drying, and controlling water content and making it be less than 5%. Said silica gel can be used for cleaning grease contamination of kitchen ventilator.
Description
Technical field
The present invention relates to field of inorganic chemical engineering, is a kind of silica gel production technique, production technique of especially a kind of silica gel special for oil removing and uses thereof.
Background technology
In process is prepare a meal by hotel, restaurant, dining room and family, all to use kitchen hood, to reduce indoor oil smoke gas.In the working process of kitchen hood, meet the heat volatilization because of a large amount of oil and form oil smoke, generated liquid thick greasy dirt.Oil droplet is stained with on sticking flue and the filter screen, flows to then in the oil bowl, and is long slightly when the time, greasy dirt accumulation in flue can directly have influence on air quantity, exhaust air rate is reduced, and then have influence on suction tolerance, the excessive suction in time of oil smoke of regional area is gone out, directly have influence on indoor air ambient.
For this reason, though there is the manufacturer of many fume exhausts to develop the kitchen hood of exempting to unpick and wash, attempt to overcome the problems referred to above, the principle of design major part is to change filter screen, or directly adds clean-out system, cleans, and wastes time and energy weak effect.
Common kitchen hood is meant non-kitchen hood of exempting to unpick and wash, and runs into above-mentioned situation, and general treatment process is: earlier the oil in the oil bowl is outwelled, unloaded lower filter screen then.Oil in the oil bowl is to be difficult to all pour out, and also have greasy dirt partly to wait by washing composition, washing powder and dissolve greasy dirt, but dissolution process is longer, and will clean flue, oil bowl and filter screen generally speaking needs more than half hour at least.So cleaning way not only waste of manpower but also contaminate environment.
Summary of the invention
The invention provides manufacture method of a kind of silica gel special for oil removing and uses thereof, it can solve problems such as wasting time and energy of prior art existence and cleaning performance difference.
In order to reach the purpose that solves the problems of the technologies described above, technical scheme of the present invention is, a kind of manufacture method of silica gel special for oil removing is characterized in that,
1.. by sodium silicate aqueous solution and dilution heat of sulfuric acid water generation reaction gel;
2.. burin-in process: the hydrogel of granulating and forming was soaked 25～80 ℃ of temperature 20-45 hour;
3.. washing is handled: wash above-mentioned hydrogel with tap water, keep water temperature at 20～80 ℃, wash 2～10 times, washed 2-6 hour at every turn, be washed till pH value greater than till 5;
4.. alkali bubble: will above-mentioned all former micelles put into alkali hydroxide soln or alkali-metal carbonate solution and carry out alkali and steep the soaked pH value 9-14 of alkali, immersion treatment 4-18 hour;
5.. drying treatment: with the hydrogel that above-mentioned four steps handle, dried 20-45 hour, wherein bake out temperature is at 100～200 ℃, and control moisture content is below 5%.
In the present invention, also have following technical characterictic: described alkali hydroxide soln is the aqueous solution of potassium hydroxide or sodium hydroxide, and described alkali-metal carbonate solution refers to the aqueous solution of salt of wormwood or yellow soda ash.
Adopting the silica gel purposes of aforesaid method manufacturing is to be used for cleaning the kitchen hood greasy dirt.
The inventive method is carried out a series of aftertreatments again with water-setting silica gel, mainly is the improvement of alkali bubble operation, makes silica gel special for oil removing, is mainly used in the processing greasy dirt.
The results showed, by manufacture method of the present invention, provide a kind of special silica gel, it can all can have good oil suction effect in different temperature (0 ℃～100 ℃) with at relative humidity RH=3%～RH=100%.It all has very ideal oil removing and oil suction effect to edible greasy dirt, lubricating oil and other liquid oil class, lipid etc.
The silica gel of the inventive method manufacturing is mainly used in family expenses range hood smeary is cleaned, and also is adapted to the range hood of large-scale restaurant, hotel, and relates to smeary repair manufacturer, can be with the light oil removing of silica gel special for oil removing of the present invention.
And to being stained with greasy dirt on the suction and discharge fan of the kitchen hood of large-scale restaurant, hotel, authority canteen and the wall, just cumbersome with existing washing composition.
The beneficial effect that the present invention compared with prior art has the following advantages:
1. result of use of the present invention is good, does not consume other material
2. easy to use, quick, clean, be convenient to handle,
3. environmentally safe.
Alternative high-temperature alkaline degreaser of the present invention and middle temperature degreaser.
Embodiment
Found that through further investigation: common silochrom passes through special aftertreatment again, can produce good oil removing and oil suction effect, thereby realize the present invention.
A kind of producing and manufacturing technique of silica gel special for oil removing, it at first generates multi-silicate and sodium sulfate by sodium silicate aqueous solution and dilution heat of sulfuric acid reaction, sodium sulfate is progressively removed in water washing process, multi-silicate is through the aging particle product that waits the shrink process to form many micropores and have higher mechanical strength, and the combined alkali bubble is handled to reach oil suction effect preferably in its process.
Chemical equation is as follows:
The glue operating pressure is: 0.1～0.38Mpa, and temperature of reaction exists: 10～60 ℃;
Aftertreatment technology to former micelle is:
(1) burin-in process:, soak more than 32 hours 25～80 ℃ of temperature with the former micelle of granulating and forming;
(3) washing is handled: wash above-mentioned all former micelles with clean tap water, the maintenance water temperature is washed 2～10 times at 20～80 ℃, washes 3 hours at every turn, is washed till pH value greater than till 5.
(4) alkali bubble: will above-mentioned all former micelles put into alkali hydroxide soln or alkali-metal carbonate solution and carry out alkali and steep the soaked pH value 9-14 of alkali, immersion treatment 4-18 hour;
(5) drying treatment: with the former micelle that above-mentioned four steps handle, oven dry is more than 32 hours, and wherein bake out temperature is at 100～200 ℃.Control moisture content is in 5%.
Embodiment 1
1.. by sodium silicate aqueous solution and dilution heat of sulfuric acid water generation reaction gel;
2.. burin-in process: the hydrogel of granulating and forming was soaked 45 ℃ of temperature 30 hours;
3.. washing is handled: wash above-mentioned hydrogel with tap water, keep water temperature at 50 ℃, wash 5 times, washed 3 hours at every turn, be washed till pH value greater than till 5;
4.. alkali bubble: will above-mentioned all former micelles put into alkali hydroxide soln or alkali-metal carbonate solution and carry out alkali and steep the soaked pH value 9-14 of alkali, immersion treatment 8 hours;
5.. drying treatment: with the hydrogel that above-mentioned four steps handle, dried 30 hours, wherein bake out temperature is at 120 ℃, and control moisture content is below 5%.
Embodiment 2
1.. by sodium silicate aqueous solution and dilution heat of sulfuric acid water generation reaction gel;
2.. burin-in process: the hydrogel of granulating and forming was soaked 80 ℃ of temperature 20 hours;
3.. washing is handled: wash above-mentioned hydrogel with tap water, keep water temperature at 30 ℃, wash 3 times, washed 4 hours at every turn, be washed till pH value greater than till 5;
4.. alkali bubble: will above-mentioned all former micelles put into alkali hydroxide soln or alkali-metal carbonate solution and carry out alkali and steep the soaked pH value 9-14 of alkali, immersion treatment 12 hours;
5.. drying treatment: with the hydrogel that above-mentioned four steps handle, dried 20 hours, wherein bake out temperature is at 100 ℃, and control moisture content is below 5%.
Embodiment 3
1.. by sodium silicate aqueous solution and dilution heat of sulfuric acid water generation reaction gel;
2.. burin-in process: the hydrogel of granulating and forming was soaked 25 ℃ of temperature 45 hours;
3.. washing is handled: wash above-mentioned hydrogel with tap water, keep water temperature at 50 ℃, wash 4 times, washed 6 hours at every turn, be washed till pH value greater than till 5;
4.. alkali bubble: will above-mentioned all former micelles put into alkali hydroxide soln or alkali-metal carbonate solution and carry out alkali and steep the soaked pH value 9-14 of alkali, immersion treatment 12 hours;
5.. drying treatment: with the hydrogel that above-mentioned four steps handle, dried 30 hours, wherein bake out temperature is at 160 ℃, and control moisture content is below 5%.
Embodiment 4
1.. by sodium silicate aqueous solution and dilution heat of sulfuric acid water generation reaction gel;
2.. burin-in process: the hydrogel of granulating and forming was soaked 80 ℃ of temperature 22 hours;
3.. washing is handled: wash above-mentioned hydrogel with tap water, keep water temperature at 35 ℃, wash 8 times, washed 3 hours at every turn, be washed till pH value greater than till 5;
4.. alkali bubble: will above-mentioned all former micelles put into alkali hydroxide soln or alkali-metal carbonate solution and carry out alkali and steep the soaked pH value 9-14 of alkali, immersion treatment 6 hours;
5.. drying treatment: with the hydrogel that above-mentioned four steps handle, dried 24 hours, wherein bake out temperature is at 170 ℃, and control moisture content is below 5%.
Embodiment 5
1.. by sodium silicate aqueous solution and dilution heat of sulfuric acid water generation reaction gel;
2.. burin-in process: the hydrogel of granulating and forming was soaked 55 ℃ of temperature 24 hours;
3.. washing is handled: wash above-mentioned hydrogel with tap water, keep water temperature at 45 ℃, wash 6 times, washed 5 hours at every turn, be washed till pH value greater than till 5;
4.. alkali bubble: will above-mentioned all former micelles put into alkali hydroxide soln or alkali-metal carbonate solution and carry out alkali and steep the soaked pH value 9-14 of alkali, immersion treatment 16 hours;
5.. drying treatment: with the hydrogel that above-mentioned four steps handle, dried 28 hours, wherein bake out temperature is at 180 ℃, and control moisture content is below 5%.
Embodiment 6
1.. by sodium silicate aqueous solution and dilution heat of sulfuric acid water generation reaction gel;
2.. burin-in process: the hydrogel of granulating and forming was soaked 35 ℃ of temperature 35 hours;
3.. washing is handled: wash above-mentioned hydrogel with tap water, keep water temperature at 60 ℃, wash 8 times, washed 4 hours at every turn, be washed till pH value greater than till 5;
4.. alkali bubble: will above-mentioned all former micelles put into alkali hydroxide soln or alkali-metal carbonate solution and carry out alkali and steep the soaked pH value 9-14 of alkali, immersion treatment 18 hours;
5.. drying treatment: with the hydrogel that above-mentioned four steps handle, dried 36 hours, wherein bake out temperature is at 110 ℃, and control moisture content is below 5%.
Alkali hydroxide soln in the foregoing description is the aqueous solution of potassium hydroxide or sodium hydroxide, and alkali-metal carbonate solution refers to the aqueous solution of salt of wormwood or yellow soda ash.
The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of technical solution of the present invention according to technical spirit of the present invention.
Claims (3)
1. the manufacture method of a silica gel special for oil removing is characterized in that,
1.. by sodium silicate aqueous solution and dilution heat of sulfuric acid water generation reaction gel;
2.. burin-in process: the hydrogel of granulating and forming was soaked 25～80 ℃ of temperature 20-45 hour;
3.. washing is handled: wash above-mentioned hydrogel with tap water, keep water temperature at 20～80 ℃, wash 2～10 times, washed 2-6 hour at every turn, be washed till pH value greater than till 5;
4.. alkali bubble: will above-mentioned all former micelles put into alkali hydroxide soln or alkali-metal carbonate solution and carry out alkali and steep the soaked pH value 9-14 of alkali, immersion treatment 4-18 hour;
5.. drying treatment: with the hydrogel that above-mentioned four steps handle, dried 20-45 hour, wherein bake out temperature is at 100～200 ℃, and control moisture content is below 5%.
2. method according to claim 1 is characterized in that described alkali hydroxide soln is the aqueous solution of potassium hydroxide or sodium hydroxide, and described alkali-metal carbonate solution refers to the aqueous solution of salt of wormwood or yellow soda ash.
3. a silica gel purposes of making according to the described method of claim 1 is characterized in that described silica gel is applied to clean the kitchen hood greasy dirt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610069537 CN1948151A (en) | 2006-10-23 | 2006-10-23 | Method of manufacturing silica gel special for oil removing and its use |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610069537 CN1948151A (en) | 2006-10-23 | 2006-10-23 | Method of manufacturing silica gel special for oil removing and its use |
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| CN1948151A true CN1948151A (en) | 2007-04-18 |
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| CN 200610069537 Pending CN1948151A (en) | 2006-10-23 | 2006-10-23 | Method of manufacturing silica gel special for oil removing and its use |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205066B (en) * | 2007-12-17 | 2010-06-02 | 李永兆 | Macroporous microsphere silica gel preparation thereof |
| CN103204509A (en) * | 2013-04-19 | 2013-07-17 | 烟台喜力康航天科技有限公司 | Food additive silica gel and production process of food additive silica gel |
| CN110862876A (en) * | 2019-11-06 | 2020-03-06 | 珠海格力电器股份有限公司 | Gel type detergent with high decontamination efficiency and preparation method thereof |
| CN113908798A (en) * | 2021-07-30 | 2022-01-11 | 冷水江三A新材料科技有限公司 | Preparation method of silicon dioxide for edible oil refining agent |
-
2006
- 2006-10-23 CN CN 200610069537 patent/CN1948151A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205066B (en) * | 2007-12-17 | 2010-06-02 | 李永兆 | Macroporous microsphere silica gel preparation thereof |
| CN103204509A (en) * | 2013-04-19 | 2013-07-17 | 烟台喜力康航天科技有限公司 | Food additive silica gel and production process of food additive silica gel |
| CN103204509B (en) * | 2013-04-19 | 2015-04-29 | 烟台喜力康航天科技有限公司 | Food additive silica gel and production process of food additive silica gel |
| CN110862876A (en) * | 2019-11-06 | 2020-03-06 | 珠海格力电器股份有限公司 | Gel type detergent with high decontamination efficiency and preparation method thereof |
| CN113908798A (en) * | 2021-07-30 | 2022-01-11 | 冷水江三A新材料科技有限公司 | Preparation method of silicon dioxide for edible oil refining agent |
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