CN102949978A - Spherical calcium oxide adsorbent and preparation method thereof - Google Patents
Spherical calcium oxide adsorbent and preparation method thereof Download PDFInfo
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- CN102949978A CN102949978A CN2011102520191A CN201110252019A CN102949978A CN 102949978 A CN102949978 A CN 102949978A CN 2011102520191 A CN2011102520191 A CN 2011102520191A CN 201110252019 A CN201110252019 A CN 201110252019A CN 102949978 A CN102949978 A CN 102949978A
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Abstract
The invention relates to a spherical calcium oxide adsorbent and a preparation method of the spherical calcium oxide adsorbent. The spherical calcium oxide adsorbent takes a high content calcium oxide mineral and a clay mineral as main raw materials. The spherical calcium oxide adsorbent is prepared from materials in percentage by weight: 50-95% of high content calcium oxide mineral, and 5-50% of clay mineral. The preparation method of the spherical calcium oxide adsorbent comprises the steps of: mixing the high content calcium oxide mineral and the clay mineral, taking a CMC (carboxyl methyl cellulose) aqueous solution in the concentration of 0-10% as an assistant, molding in a spherical pellet granulator, screening spherical particles in a certain particle size range by two layers of sieves, further drying, roasting and packaging the spherical particles to obtain the spherical calcium oxide adsorbent. The spherical calcium oxide adsorbent is chemically prepared from 40-95% of calcium oxide, 0.5-49.5% of magnesium oxide, 3-30% of silicon dioxide, 1-30% of aluminum oxide, 0-30% of sodium oxide, and 0.5-5% of ferric oxide. The spherical calcium oxide adsorbent has favorable selective adsorption performance and wear-resistant performance. Moreover, the spherical calcium oxide adsorbent can be used as a desiccant used in the hollow glass industry, and also can adsorb acid gases such as hydrogen sulfide, hydrogen chloride, sulfur dioxide and the like to purify the industrial waste gases.
Description
Affiliated technical field:
Patent of the present invention relates to a kind of spherical calcium oxide adsorbent, can be used as drier and adsorbent, in double glazing manufacturing and industrial gas purifying field, use, can absorbed air and other gas in moisture content make gas dry, the carbon dioxide in the absorption industrial gasses, sulfur dioxide, hydrochloric acid, ammonia, hydrogen sulfide etc. make gas purification.
Background technology:
At present, the multiplex food desiccant of doing of calcium oxide, mainly be that the natural minerals such as calcium carbonate and lime stone are obtained calcium oxide particle thing in irregular shape through calcining, pulverizing, screening, be distributed into pouch with air-permeable paper, be placed in the food bag, be used for absorbing airborne moisture content, guarantee the drying of food in the packaging bag; This drier is owing to out-of-shape, and intensity is low, and is in use easily damaged, and easy heating, cracked, efflorescence after the suction are not suitable for dry at double glazing and use in the industrial gas purifying field.
Now, the drier that novel energy-saving construction material double glazing industry is used is generally the 3A molecular sieve, and this product is the spheric granules of being made by zeolite and clay mineral, a product adsorption moisture and absorbed air not, but manufacturing cost is higher.And use in addition the 4A molecular sieve of usefulness, perhaps concave convex rod great soil group drier although cost varies with temperature air adsorption or burst size higher, is not suitable for double glazing.
Summary of the invention
For overcome existing calcium oxide drier intensity low, hold breakable deficiency, the invention provides a kind of spherical calcium oxide adsorbent, intensity is high, wearability good, the suction after be difficult for breaking, and the adsorption capacity to air is lower, low cost of manufacture, can substitute the 3A molecular sieve, in double glazing, use.Also can substitute drying and field of purification that active carbon, molecular sieve, silica gel, activated alumina are used for industrial gasses.
The spherical calcium oxide adsorbent of indication of the present invention, it is prepared burden according to following proportioning (percentage by weight): high-load calcium oxide mineral 50-95%, clay mineral 5-50% take high-load calcium oxide mineral and clay mineral as primary raw material.These two classes mineral are mixed; be that the aqueous solution of 0-10%CMC (carboxymethyl cellulose) is made auxiliary agent with concentration; moulding in Spheroidgranulator; filter out the spheric granules with certain particle size scope through two-layer sieve; further by drying, roasting and packaging process, obtain the spherical calcium oxide drier.
Said high-load calcium oxide mineral are wherein a kind of raw materials such as lime stone, calcite, marble, dolomite, white lime, quick lime among the present invention, or the mixture of several raw materials wherein, and the content of calcium oxide should guarantee more than 40%.
The said clay mineral of the present invention is wherein a kind of raw material or their mixture such as bentonite, kaolin, attapulgite, sheep dry ground.
The content of spheric granules water is 10-60% in the granulation process of the present invention.
The spheric granules particle size range that the present invention obtains generally between 0.5-6.0mm, can be controlled at granularity within any scope by screening, such as 0.5-0.85mm, and 1.0-1.4mm, 0.85-1.4mm, 1.0-1.6mm, 1.6-2.0mm, 2.0-2.5mm, 2.0-5.0mm, 3.0-6.0mm etc.
The drying condition that the present invention adopts is: 30 ℃-500 ℃, be preferably in 30 ℃-150 ℃, and the moisture of product should be controlled between the 10%-30% after the oven dry.
The sintering temperature that the present invention adopts is 500 ℃ 3-1000 ℃, and the equipment such as available rotary kiln, tunnel cave carry out roasting.
The resulting spherical calcium oxide adsorbent of the present invention has following composition: calcium oxide 40-95%, magnesia 0.5-49.5%, silica 3-30%, alundum (Al2O3) 1-30%, sodium oxide molybdena 0-30%.Di-iron trioxide 0.5-5%
The spherical calcium oxide adsorbent that the present invention obtains, its performance is as follows:
Shape: sphere
Color: greyish white
Water absorption (25 ℃/75%RH/48H): 10-30%
Bulk density: 500-1000g/l
Intensity: 0-100N
Air adsorption amount: less than 50ml
The finished product water content (575 ℃/3H): less than 5%
Spherical calcium oxide adsorbent provided by the invention, owing to selected cheap high-load calcium oxide mineral as the function sorbing material, and greatly reduce manufacturing cost; Make simultaneously spheric granules, wearability and the intensity of product increase substantially; Because water absorption is higher, adsorption selectivity is good, therefore, can be as a kind of high-efficiency adsorbent, the concave convex rod drier of alternative traditional 3A, 4A, activated alumina, active carbon, chloride containing calcium etc. uses in the double glazing industry, also the industrial waste gas purifying field be can be used for, sulfur dioxide, hydrogen sulfide, hydrochloric acid etc. removed.
Description of drawings
Accompanying drawing is to utilize high-load calcium oxide mineral and clay mineral to make the process chart of spherical calcium oxide adsorbent.
The present invention is further described below in conjunction with drawings and Examples.
Example 1-5
Prepare spherical calcium oxide adsorbent with method provided by the invention
Table 1
Prepare burden by above-mentioned raw materials, through mixing, obtain mixed material, in Spheroidgranulator, spray into CMC (carboxymethyl cellulose) solution of 0-10% concentration, be interrupted and add mixed powder, particle rolls, and eats powder, grow up gradually, particle size range is as required determined the particle rolling time; When reaching needed granularity, granule materials is taken out from comminutor, sieve, control screen cloth diameter, the spheric granules that obtains having the certain particle size scope; Pass through again surface finish and oven dry, roasting in rotary kiln, the temperature of rotary kiln is controlled at 500 ℃-950 ℃, and the grain products that obtains carries out physical and chemical performance and detects.
Performance indications such as the following table of the spherical adsorbent that produces with this method:
Table 2
Claims (5)
1. spherical calcium oxide adsorbent.It is take high-load calcium oxide mineral and clay mineral as primary raw material, prepares burden according to following proportioning (percentage by weight): high-load calcium oxide mineral 50-95%, clay mineral 5-50%.These two classes mineral are mixed; be that the aqueous solution of 0-10%CMC (carboxymethyl cellulose) is made auxiliary agent with concentration; moulding in Spheroidgranulator; filter out the spheric granules with certain particle size scope through two-layer sieve; further by drying, roasting and packaging process, obtain spherical calcium oxide adsorbent.
2. according to right 1 described spherical calcium oxide adsorbent, its chemical composition is: calcium oxide 40-95%, magnesia 0.5-49.5%, silica 3-30%, alundum (Al2O3) 1-30%, sodium oxide molybdena 0-30%, di-iron trioxide 0.5-5%.
3. according to right 1 described high-load calcium oxide mineral, comprise wherein a kind of raw material such as lime stone, calcite, marble, dolomite, white lime, quick lime, or the mixture of several raw materials, the content of calcium oxide should guarantee more than 40%.
4. comprise the wherein mixture of a kind of raw material or several raw materials such as bentonite, kaolin, attapulgite, sheep dry ground according to right 1 described clay mineral.
5. according to right 1 described spherical calcium oxide adsorbent, be shaped as sphere, the color canescence can be made into the bead of various particle size ranges by control pelletizing and screening process, and have following absorption property:
Shape: sphere
Color: greyish white
Water absorption (25 ℃/75%RH/48H): 10-30%
Bulk density: 500-1000g/l
Intensity: 0-100N
Air adsorption amount: less than 50ml
The finished product water content (575 ℃/3H): less than 5%.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157451A (en) * | 2013-04-11 | 2013-06-19 | 福州大学 | Zero-valent iron and nano magnesium hydroxide supported reductive spherical cellulose adsorbent |
| CN104276806A (en) * | 2013-07-08 | 2015-01-14 | 金松 | Spherical calcium hydroxide and preparation method thereof |
| CN105056889A (en) * | 2015-08-25 | 2015-11-18 | 安吉群利干燥剂有限公司 | Preparation method for bentonite drying agent |
| CN105080467A (en) * | 2015-09-08 | 2015-11-25 | 江苏爱尔环保科技有限公司 | Adsorbent used for adsorbing ammonia gas in rooms and automobiles and preparation method thereof |
| CN105080494A (en) * | 2015-09-08 | 2015-11-25 | 江苏爱尔环保科技有限公司 | Adsorbent used for adsorbing formaldehyde in rooms and automobiles and preparation method thereof |
| CN105664705A (en) * | 2016-01-12 | 2016-06-15 | 宁夏宁东诚鑫环保新材料科技有限公司 | Limestone and attapulgite mixed desulfurizing agent |
| CN108083364A (en) * | 2018-02-06 | 2018-05-29 | 天津市富康德环保科技有限公司 | A kind of pharmaceutical formulation for sewage disposal |
| CN108404882A (en) * | 2017-06-26 | 2018-08-17 | 上海久宙化学品有限公司 | Drier and its manufacturing method |
| CN108722168A (en) * | 2018-06-15 | 2018-11-02 | 西南化工研究设计院有限公司 | A kind of renewable dry flue gas desulphurization agent and its preparation method and application |
| CN108905949A (en) * | 2018-07-12 | 2018-11-30 | 杭州家爽包装材料有限公司 | A kind of preparation method and product of calcium oxide desiccant |
| CN108940182A (en) * | 2018-07-12 | 2018-12-07 | 杭州家爽包装材料有限公司 | A kind of method preparing calcium oxide desiccant and product |
| CN109289497A (en) * | 2018-10-25 | 2019-02-01 | 南京华电节能环保设备有限公司 | A kind of coke oven flue gas sulfur elimination |
| CN109745946A (en) * | 2019-03-14 | 2019-05-14 | 盱眙博图凹土股份有限公司 | A kind of molecular sieve for hollow glass desiccant and preparation method thereof |
| CN110756154A (en) * | 2018-07-26 | 2020-02-07 | 桐庐巴特斯科技有限公司 | Calcium oxide desiccant with geometric shape and preparation method thereof |
| CN115779850A (en) * | 2022-11-01 | 2023-03-14 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Silica-based stone powder material, preparation method and application |
Citations (1)
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| CN101628221A (en) * | 2008-07-15 | 2010-01-20 | 郑州天祥无机材料有限公司 | Spherical calcium oxide adsorbent and preparation method thereof |
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- 2011-08-30 CN CN2011102520191A patent/CN102949978A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101628221A (en) * | 2008-07-15 | 2010-01-20 | 郑州天祥无机材料有限公司 | Spherical calcium oxide adsorbent and preparation method thereof |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157451A (en) * | 2013-04-11 | 2013-06-19 | 福州大学 | Zero-valent iron and nano magnesium hydroxide supported reductive spherical cellulose adsorbent |
| CN104276806A (en) * | 2013-07-08 | 2015-01-14 | 金松 | Spherical calcium hydroxide and preparation method thereof |
| CN105056889A (en) * | 2015-08-25 | 2015-11-18 | 安吉群利干燥剂有限公司 | Preparation method for bentonite drying agent |
| CN105080494B (en) * | 2015-09-08 | 2018-06-15 | 江苏爱尔环保科技有限公司 | It is a kind of to be used for adsorbent of formaldehyde adsorption and preparation method thereof in indoor and automobile |
| CN105080467A (en) * | 2015-09-08 | 2015-11-25 | 江苏爱尔环保科技有限公司 | Adsorbent used for adsorbing ammonia gas in rooms and automobiles and preparation method thereof |
| CN105080494A (en) * | 2015-09-08 | 2015-11-25 | 江苏爱尔环保科技有限公司 | Adsorbent used for adsorbing formaldehyde in rooms and automobiles and preparation method thereof |
| CN105664705A (en) * | 2016-01-12 | 2016-06-15 | 宁夏宁东诚鑫环保新材料科技有限公司 | Limestone and attapulgite mixed desulfurizing agent |
| CN108404882A (en) * | 2017-06-26 | 2018-08-17 | 上海久宙化学品有限公司 | Drier and its manufacturing method |
| CN108083364A (en) * | 2018-02-06 | 2018-05-29 | 天津市富康德环保科技有限公司 | A kind of pharmaceutical formulation for sewage disposal |
| CN108722168A (en) * | 2018-06-15 | 2018-11-02 | 西南化工研究设计院有限公司 | A kind of renewable dry flue gas desulphurization agent and its preparation method and application |
| CN108905949A (en) * | 2018-07-12 | 2018-11-30 | 杭州家爽包装材料有限公司 | A kind of preparation method and product of calcium oxide desiccant |
| CN108940182A (en) * | 2018-07-12 | 2018-12-07 | 杭州家爽包装材料有限公司 | A kind of method preparing calcium oxide desiccant and product |
| CN108905949B (en) * | 2018-07-12 | 2021-02-26 | 杭州家爽包装材料有限公司 | Preparation method of calcium oxide drying agent and product |
| CN110756154A (en) * | 2018-07-26 | 2020-02-07 | 桐庐巴特斯科技有限公司 | Calcium oxide desiccant with geometric shape and preparation method thereof |
| CN110756154B (en) * | 2018-07-26 | 2022-08-26 | 杭州远烨新材料有限公司 | Calcium oxide desiccant with geometric shape and preparation method thereof |
| CN109289497A (en) * | 2018-10-25 | 2019-02-01 | 南京华电节能环保设备有限公司 | A kind of coke oven flue gas sulfur elimination |
| CN109745946A (en) * | 2019-03-14 | 2019-05-14 | 盱眙博图凹土股份有限公司 | A kind of molecular sieve for hollow glass desiccant and preparation method thereof |
| CN115779850A (en) * | 2022-11-01 | 2023-03-14 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Silica-based stone powder material, preparation method and application |
| CN115779850B (en) * | 2022-11-01 | 2024-07-26 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Stone powder silicon-based material, preparation method and application |
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Application publication date: 20130306 |