CN106276926A - The production method of modified pressure-variable adsorption silica gel - Google Patents
The production method of modified pressure-variable adsorption silica gel Download PDFInfo
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- CN106276926A CN106276926A CN201610662435.1A CN201610662435A CN106276926A CN 106276926 A CN106276926 A CN 106276926A CN 201610662435 A CN201610662435 A CN 201610662435A CN 106276926 A CN106276926 A CN 106276926A
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- silica gel
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/16—Preparation of silica xerogels
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/157—After-treatment of gels
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/14—Pore volume
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/16—Pore diameter
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Abstract
The present invention relates to the production method of a kind of modified pressure-variable adsorption silica gel, which solve the technical problem that the product obtained by existing method still has much room for improvement for CO2 adsorbance, it is by sodium silicate solution and dilution heat of sulfuric acid, through strengthening mixing, neutralize reaction and generate hydrogel, this water-setting micelle steeps through a subacid, once wash, quadratic acid steeps, secondary is washed, drag for glue, primary drying, redrying step, prepare silica gel finished product, hydrogel steeps before step also through performic acid at a subacid, acetic acid or hydrofluoric acid treatment, wash and drag at secondary between glue step and also process step through surfactant.The present invention can be used for the preparation field of adsorption silica gel.
Description
Technical field
The present invention relates to chemical field, the production method of a kind of modified pressure-variable adsorption silica gel.
Background technology
At present, A type silica gel is widely used in precision instrument, industry, medicine, food, clothes, shoes and hats and the articles for daily use etc.
Remove moisture dry, substantially can reach the effect of the moisture absorption, and pressure-swing absorption apparatus be removed moisture and is dried absorption, due to A type silica gel
Absorbability to CO2 does not reaches far away the design requirement of pressure-swing absorption apparatus, therefore cannot meet requirement.
Publication No. CN101053819 B is authorized to the invention discloses the production method of a kind of variable-pressure adsorption silica gel, its
Comprise the following steps: sodium silicate and concentrated sulphuric acid are made into weak solution, the sodium silicate solution prepared and sulfuric acid solution are carried out by force
Change mixing neutralization reaction and make hydrogel；Acid bubble, washing, the silica gel subacid again that will have washed for the first time is carried out by aging for hydrogel
Bubble, washing, after secondary washing, in silica gel, acid content is 0.008～0.015%；The silica gel good through twice washing is carried out Jing Pao
After pull out, carry out being dried for the first time, dried silica gel for the first time screened, then carries out redrying, redrying is
Vibrated fluidized bed is carried out in short-term, dry rapidly, moisture control, within 2%, makes product, and the present invention has higher
Specific surface area, stable chemical nature, nonpoisonous and tasteless, carbon dioxide and steam are had the features such as stronger absorbability.But,
The product that the method prepares still has much room for improvement for CO2 adsorbance.
Summary of the invention
The present invention is contemplated to solve the technology that the product obtained by existing method still has much room for improvement for CO2 adsorbance and asks
Topic, it is provided that the production method of a kind of modified pressure-variable adsorption silica gel that CO2 adsorbance can be greatly improved.
To this end, the present invention provides the production method of a kind of modified pressure-variable adsorption silica gel, it is by sodium silicate solution and dilute sulfuric acid
Solution, through strengthening mixing, neutralizes reaction and generates hydrogel, this water-setting micelle steep through a subacid, once washing, quadratic acid steep,
Secondary is washed, is dragged for glue, primary drying, redrying step, prepares silica gel finished product, and hydrogel goes back warp before a subacid steeps step
Performic acid, acetic acid or hydrofluoric acid treatment.
Preferably, formic acid, acetic acid or Fluohydric acid. step process are containing formic acid, acetic acid or hydrofluoric acid material by water-setting micelle
Solution in soak 0.9～5 minute, enter back into one subacid bubble liquid in.
Preferably, the mass percent concentration of the solution of formic acid, acetic acid or hydrofluoric acid material is 0.5～5.0%.
Preferably, the time of communicated band is 0.9～10 minute.
Preferably, secondary washing and described dragging for also process step through surfactant between glue step
Preferably, surfactant processes step is that the micelle after having been washed by secondary enters back into and adds surface activity
Immersion treatment 5～10h in agent solution.
Preferably, the mass percent concentration of surfactant solution is 0.3～0.6%.
The invention has the beneficial effects as follows: owing to the manufacture method of pressure-variable adsorption silica gel modified in the present invention is in advance in water
Add the material of a kind of formic acid, acetic acid or Fluohydric acid., within one second after silica gel pelletize, enter in this solution and soak, to stop it
Aging reaming, so thinner than micropore in pressure-variable adsorption silica gel before modified becomes, specific surface area is higher.The present invention is above-mentioned in entrance
After this solution soaks, aging by conveyer belt, it is sent in a subacid bubble liquid, so traditional method of ratio, its micropore is not only
Carefully, and uniformly, so that modified pressure-variable adsorption silica gel CO2 adsorbance reaches peak；Owing to this gel particles has used first
Acid, acetic acid or hydrofluoric acid material processed, so after the drying, there is fried stricture of vagina on surface, in order to ensure that micelle surface nondestructive is hindered, so
Add surfactant to process, micelle surface the most not only can be made to improve the most accordingly without fried stricture of vagina, mechanical strength.
Detailed description of the invention
According to following embodiment, the present invention be may be better understood.But, as it will be easily appreciated by one skilled in the art that reality
Execute the content described by example and be merely to illustrate the present invention, and should be also without limitation on this described in claims
Bright.
The IW dispersant that surfactant used in the present invention produces purchased from Zibo Yun Chuan Chemical Co., Ltd., it is main
Composition is fatty alcohol-polyoxyethylene ether；In below embodiment, in addition to having and indicating, concentration is mass percent concentration.
Embodiment 1
The present invention, by sodium silicate solution and dilution heat of sulfuric acid, through strengthening mixing, neutralizes reaction and generates hydrogel, this water-setting
Micelle steeps → once washing → quadratic acid bubble → secondary washing → WA surface work through formic acid, acetic acid or hydrofluoric acid treatment → mono-subacid
Property agent process → drag for the PROCESS FOR TREATMENT of glue → primary drying → redrying, thus obtain modified pressure-variable adsorption silica gel product.
The modified pressure-variable adsorption silica gel of the present invention is that preparation is containing sio on the basis of tradition pressure-variable adsorption silica gel219%
Sodium silicate solution and content be the sulfuric acid solution of 22%, mixed by strengthening, neutralize reaction and generate water-setting micelle.Formic acid,
Acetic acid or Fluohydric acid. PROCESS FOR TREATMENT be prepared water-setting micelle was entered in 1 second added in advance a kind of formic acid, acetic acid or
The solution of hydrofluoric acid material soaks 5 minutes, more communicated band enters in a subacid bubble liquid for 10 minutes；One subacid bubble process be by
Hydrogel micelle after moment burin-in process is immersed in the acid solution of 6% process 15h；The PROCESS FOR TREATMENT once washed is by one
Subacid finish into after glue, in 40 DEG C of water at low temperature, rinse to glue is by first containing sour 0.008% quadratic acid bubble PROCESS FOR TREATMENT
Secondary washing complete after micelle soak 1% acid solution in process 15h；Secondary washing process process be quadratic acid is finished into after
Acid, wash in 40 DEG C of water at low temperature, to glue containing acid 0.01%；It is to have been washed by secondary that WA surfactant processes
After micelle enter back into and add immersion treatment 5h in WA surfactant solution.
In the present invention one subacid bubble and quadratic acid bubble technique, selected acid is the one in sulphuric acid, hydrochloric acid, nitric acid.
Embodiment 2-6
Technological parameter and test rating that embodiment 2-6 is concrete are as shown in table 1, and other parameter and step are with embodiment 1.
Comparative example
Comparative example is that other step and technological parameter are same as in Example 6 without formic acid, acetic acid or hydrofluoric acid treatment.
Table 1
The modified pressure-variable adsorption silica gel of the present invention, is particularly well-suited to chemical industry, metallurgy, petrochemical industry, machinery, electronics, food, medicine
The industries such as product, light industry, environmental protection, ethylene, vinyl chloride, purifying carbon oxide, carbon dioxide, carry hydrogen, carry helium, desulfurization, oxygen processed, nitrogen processed
Deng field, economy, environmental protection, this service life of the products length, benefit highlights.
Claims (7)
1. a production method for modified pressure-variable adsorption silica gel, it is by sodium silicate solution and dilution heat of sulfuric acid, through strengthening mixing, in
With reaction and generate hydrogel, this water-setting micelle steeps through a subacid, once washing, quadratic acid bubble, secondary washing, drag for glue, once
Be dried, redrying step, prepare silica gel finished product, it is characterised in that: described hydrogel steeps before step also through first at a subacid
Acid, acetic acid or hydrofluoric acid treatment.
The production method of modified pressure-variable adsorption silica gel the most according to claim 1, it is characterised in that described formic acid, acetic acid or
Hydrofluoric acid treatment is to be soaked 0.9～5 minute in the solution containing formic acid, acetic acid or Fluohydric acid. by water-setting micelle, more communicated band
Enter in a subacid bubble liquid.
The production method of modified pressure-variable adsorption silica gel the most according to claim 2, it is characterised in that described formic acid, acetic acid or
The mass percent concentration of the solution of hydrofluoric acid material is 0.5～5.0%.
The production method of modified pressure-variable adsorption silica gel the most according to claim 2, it is characterised in that described communicated band
Time is 0.9～10 minute.
The production method of modified pressure-variable adsorption silica gel the most according to claim 1, it is characterised in that wash at described secondary
With described dragging for also processes step through surfactant between glue step.
The production method of modified pressure-variable adsorption silica gel the most according to claim 5, it is characterised in that in described surface activity
It is that the micelle after having been washed by secondary enters back into and adds immersion treatment 5～10h in surfactant solution that agent processes step.
The production method of modified pressure-variable adsorption silica gel the most according to claim 6, it is characterised in that described surfactant
Mass percent concentration be 0.3～0.6%.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110347213A (en) * | 2019-07-15 | 2019-10-18 | 陈桂珍 | A kind of flexible display screen luggable computer |
| CN110898811A (en) * | 2019-12-19 | 2020-03-24 | 乳山市大洋硅胶厂 | Preparation method of nitrogen adsorption silica gel |
| CN110918049A (en) * | 2019-12-19 | 2020-03-27 | 乳山市大洋硅胶厂 | Preparation method of methane adsorption silica gel |
| CN110918048A (en) * | 2019-12-19 | 2020-03-27 | 乳山市大洋硅胶厂 | Preparation method of hydrogen-absorbing pressure swing adsorption silica gel |
| CN111298763A (en) * | 2020-03-03 | 2020-06-19 | 山东建筑大学 | Modified silica gel CO2Adsorbent and preparation method and application thereof |
| CN111334207A (en) * | 2018-12-18 | 2020-06-26 | 深圳市弗雷丹尔科技有限公司 | Antistatic mobile phone protection film |
| CN113013385A (en) * | 2019-12-19 | 2021-06-22 | 山西沃特海默新材料科技股份有限公司 | Coating agent, silicon-carbon material and preparation process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111334207A (en) * | 2018-12-18 | 2020-06-26 | 深圳市弗雷丹尔科技有限公司 | Antistatic mobile phone protection film |
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| CN110918049A (en) * | 2019-12-19 | 2020-03-27 | 乳山市大洋硅胶厂 | Preparation method of methane adsorption silica gel |
| CN110918048A (en) * | 2019-12-19 | 2020-03-27 | 乳山市大洋硅胶厂 | Preparation method of hydrogen-absorbing pressure swing adsorption silica gel |
| CN113013385A (en) * | 2019-12-19 | 2021-06-22 | 山西沃特海默新材料科技股份有限公司 | Coating agent, silicon-carbon material and preparation process |
| CN111298763A (en) * | 2020-03-03 | 2020-06-19 | 山东建筑大学 | Modified silica gel CO2Adsorbent and preparation method and application thereof |
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| CN106276926B (en) | 2018-01-30 |
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Address after: No.46, ZHUJIAZHUANG commercial road, Rushankou Town, Rushan City, Weihai City, Shandong Province Patentee after: Rushan Dayang silica gel Co.,Ltd. Address before: ZHUJIAZHUANG, Rushankou Town, Rushan City, Weihai City, Shandong Province Patentee before: RUSHAN DAYANG SILICA GEL FACTORY |
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Denomination of invention: Production method of modified pressure swing adsorption silica gel Effective date of registration: 20230816 Granted publication date: 20180130 Pledgee: Agricultural Bank of China Limited Rushan City Branch Pledgor: Rushan Dayang silica gel Co.,Ltd. Registration number: Y2023980052410 |
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