CN103043670A - Process flow of novel water-absorbent silica gel - Google Patents
Process flow of novel water-absorbent silica gel Download PDFInfo
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- CN103043670A CN103043670A CN2012105780903A CN201210578090A CN103043670A CN 103043670 A CN103043670 A CN 103043670A CN 2012105780903 A CN2012105780903 A CN 2012105780903A CN 201210578090 A CN201210578090 A CN 201210578090A CN 103043670 A CN103043670 A CN 103043670A
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Abstract
The invention relates to a process flow of novel water-absorbent silica gel. The process flow of the novel water-absorbent silica gel comprises mixing, reacting and rinsing by using an alkali preparing tank, an acid preparing tank, a reaction tower and a rinsing tank according to the following specific steps: preparing a sodium silicate solution with a SiO2 content of 30-40% at the temperature of 35-40 DEG C in silica gel producing equipment through the alkali preparing tank; preparing a sulfuric acid solution with the content of 30-45% at the temperature of 20-35 DEG C in the acid preparing tank; adding the sulfuric acid solution into the reaction tower, adding the prepared sodium silicate solution into the reaction tower, and reacting to form silica gel particles; aging the silica gel particles for 15-18 hours in an acid solution with the pH value of 1-3, and then feeding the silica gel particles into the rinsing tank; rinsing the silica gel particles in water of 55-65 DEG C, and soaking the silica gel particles in ammonia for 6-8 hours at the end of rinsing; and performing pressing filtration and drying in a drying box to obtain the novel water-absorbent silica gel.
Description
Technical field
The invention belongs to silica gel manufacturing technology field, be specifically related to the technical process of a kind of Novel absorbent silica gel.
Background technology
The Application Areas of silica gel is day by day extensive, see with regard to present should being used for, keep the silica gel in Application Areas field to be mainly Bibulous Silica Gel at moisture content, Bibulous Silica Gel has all obtained good application in Application Areass such as flocculating aids, matting agent, tactile flat agent, support of the catalyst, selective adsorptions in addition, and existing Technology is still waiting to improve in manufacture craft at present.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, has proposed the technical process of a kind of Novel absorbent silica gel, and described Novel absorbent silica gel carries out the colloidal sol reaction by water glass and sulfuric acid and makes, and its reaction signal formula is:
Na
2SiO
3+H
2SO
4 Na
2SO
4+H
4SiO
4
Technical scheme of the present invention is: the technical process of a kind of Novel absorbent silica gel, and to mix, react and wash by joining alkali pond, complex acid tank, reaction tower and water washing tank, the concrete technology flow process is: prepare SiO by joining the alkali pond on silica gel production equipment
2Content is the sodium silicate solution of 30-40%, temperature is 35-40 ℃, configuration content is the sulphuric acid soln of 30-45% in the complex acid tank, temperature is 20-35 ℃, sulphuric acid soln is joined in the reaction tower, again the sodium silicate solution for preparing is joined in the reaction tower, form silica gel particle after the reaction, silica gel particle is after in the acidic solution of pH value at 1-3 aging 15-18 hour, enter into water washing tank, wash in 55-65 ℃ water, washing was carried out the ammonia bubble 6-8 hour behind terminal point, then press filtration oven dry in baking oven namely gets Novel absorbent silica gel.
The reaction tower interior reaction temperature is 90-100 ℃.
Washing time is 40-45 hour in the water washing tank.
The temperature of press filtration baking stage baking oven is 100-150 ℃, and drying time is 48-52 hour.
The present invention has following beneficial effect:
1) need not starting material are carried out special processing.
2) production process is all carried out under condition of normal pressure, is conducive to large-scale production.
3) washing temperature is carried out at normal temperatures in the water washing process, the silica gel even particle size distribution that makes.
4) can in water washing process, carry out according to client's needs reaming and process, satisfy different clients' index request.
5) shortened the production cycle, utilization ratio of device obviously improves.
Further specify the present invention below in conjunction with embodiment.
Embodiment
Below be embodiment of the present invention:
Embodiment 1:
First 10 liter of 40% sulphuric acid soln joined experiment with in the reaction tower, again with 6 liters of SiO that prepare
2Content is that 35% sodium silicate solution is injected to experiment with in the reaction tower, temperature is 91 ℃ in the tower, after in the acidic solution of pH value at 1-3 aging 16 hours, enter into the experimental water cleaning of evaporator, in 56 ℃ water, wash, carried out the ammonia bubble after the washing to 41 hour 7 hours, then the temperature of press filtration baking stage baking oven is 100 ℃, and drying time is 49 hours experimental datas such as tables 1.
Table 1 experimental data table
Embodiment 2:
First 10 liter of 42% sulphuric acid soln joined experiment with in the reaction tower, again with 6 liters of SiO that prepare
2Content is that 38% sodium silicate solution is injected to experiment with in the reaction tower, temperature is 95 ℃ in the tower, after in the acidic solution of pH value at 1-3 aging 16 hours, enter into the experimental water cleaning of evaporator, in 57 ℃ water, wash, carried out the ammonia bubble after the washing to 46 hour 7 hours, then the temperature of press filtration baking stage baking oven is 130 ℃, and drying time is 52 hours experimental datas such as tables 2.
Table 2 experimental data table
Embodiment 3:
First 10 liter of 43% sulphuric acid soln joined experiment with in the reaction tower, again with 6 liters of SiO that prepare
2Content is that 38% sodium silicate solution is injected to experiment with in the reaction tower, temperature is 99 ℃ in the tower, after in the acidic solution of pH value at 1-3 aging 16 hours, enter into the experimental water cleaning of evaporator, in 60 ℃ water, wash, carried out the ammonia bubble after the washing to 44 hour 7 hours, then the temperature of press filtration baking stage baking oven is 140 ℃, and drying time is 48 hours experimental datas such as tables 3.
Table 3 experimental data table
Embodiment 4:
First 10 liter of 45% sulphuric acid soln joined experiment with in the reaction tower, again with 6 liters of SiO that prepare
2Content is that 39% sodium silicate solution is injected to experiment with in the reaction tower, temperature is 99 ℃ in the tower, after in the acidic solution of pH value at 1-3 aging 18 hours, enter into the experimental water cleaning of evaporator, in 64 ℃ water, wash, carried out the ammonia bubble after the washing to 43 hour 7 hours, then the temperature of press filtration baking stage baking oven is 140 ℃, and drying time is 49 hours experimental datas such as tables 4.
Table 4 experimental data table
Embodiment 5:
First 10 liter of 41% sulphuric acid soln joined experiment with in the reaction tower, again with 6 liters of SiO that prepare
2Content is that 39% sodium silicate solution is injected to experiment with in the reaction tower, temperature is 97 ℃ in the tower, after in the acidic solution of pH value at 1-3 aging 18 hours, enter into the experimental water cleaning of evaporator, in 63 ℃ water, wash, carried out the ammonia bubble after the washing to 44 hour 7 hours, then the temperature of press filtration baking stage baking oven is 120 ℃, and drying time is 50 hours experimental datas such as tables 5.
Table 5 experimental data table
Claims (2)
1. Novel absorbent silica gel technical process is characterized in that: described technical process mixes, reacts and wash by joining alkali pond, complex acid tank, reaction tower and water washing tank, and the concrete technology flow process is: prepare SiO by joining the alkali pond on silica gel production equipment
2Content is the sodium silicate solution of 30-40%, temperature is 35-40 ℃, configuration content is the sulphuric acid soln of 30-45% in the complex acid tank, temperature is 20-35 ℃, sulphuric acid soln is joined in the reaction tower, the reaction tower interior reaction temperature is 90-100 ℃, again the sodium silicate solution for preparing is joined in the reaction tower, form silica gel particle after the reaction, silica gel particle entered into water washing tank after in the acidic solution of pH value at 1-3 aging 15-18 hour, in 55-65 ℃ water, wash, washing was carried out the ammonia bubble 6-8 hour behind terminal point, then press filtration oven dry in baking oven namely gets Novel absorbent silica gel.
2. Novel absorbent silica gel according to claim 1 technical process is characterized in that: washing time is 40-45 hour in the water washing tank.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103464216A (en) * | 2013-09-26 | 2013-12-25 | 中国海洋石油总公司 | Preparation method of silica gel carrier of heteropoly acid catalyst for synthesizing sec-butyl acetate from acetic acid and butylene |
CN103627242A (en) * | 2013-11-29 | 2014-03-12 | 北京航天赛德科技发展有限公司 | Preparation method of delustering agent for UV (ultraviolet) curing coating |
CN104030298A (en) * | 2014-05-28 | 2014-09-10 | 肇庆市金三江化工有限公司 | Preparation method of beer silica gel |
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CN1363514A (en) * | 2001-01-11 | 2002-08-14 | 青岛美晶化工有限公司 | macroreticular silica gel and its preparing process |
CN101327931A (en) * | 2008-07-24 | 2008-12-24 | 青岛美高集团有限公司 | Silica gel cleaning production method and sulfuric acid production method |
CN101591022A (en) * | 2009-06-29 | 2009-12-02 | 青岛中能集团有限公司 | A kind of preparation process of high-purity silica gel and method |
CN101591021A (en) * | 2009-06-29 | 2009-12-02 | 青岛中能集团有限公司 | A kind of preparation method of thick-hole block silica gel |
-
2012
- 2012-12-26 CN CN2012105780903A patent/CN103043670A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1363514A (en) * | 2001-01-11 | 2002-08-14 | 青岛美晶化工有限公司 | macroreticular silica gel and its preparing process |
CN101327931A (en) * | 2008-07-24 | 2008-12-24 | 青岛美高集团有限公司 | Silica gel cleaning production method and sulfuric acid production method |
CN101591022A (en) * | 2009-06-29 | 2009-12-02 | 青岛中能集团有限公司 | A kind of preparation process of high-purity silica gel and method |
CN101591021A (en) * | 2009-06-29 | 2009-12-02 | 青岛中能集团有限公司 | A kind of preparation method of thick-hole block silica gel |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103464216A (en) * | 2013-09-26 | 2013-12-25 | 中国海洋石油总公司 | Preparation method of silica gel carrier of heteropoly acid catalyst for synthesizing sec-butyl acetate from acetic acid and butylene |
CN103627242A (en) * | 2013-11-29 | 2014-03-12 | 北京航天赛德科技发展有限公司 | Preparation method of delustering agent for UV (ultraviolet) curing coating |
CN103627242B (en) * | 2013-11-29 | 2015-03-04 | 北京航天赛德科技发展有限公司 | Preparation method of delustering agent for UV (ultraviolet) curing coating |
CN104030298A (en) * | 2014-05-28 | 2014-09-10 | 肇庆市金三江化工有限公司 | Preparation method of beer silica gel |
CN104030298B (en) * | 2014-05-28 | 2016-03-02 | 肇庆金三江硅材料有限公司 | A kind of preparation method of beer silica gel |
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