CN101987294A - Method for preparing honeycomb ceramic adsorbent material by utilizing attapulgite clay - Google Patents
Method for preparing honeycomb ceramic adsorbent material by utilizing attapulgite clay Download PDFInfo
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- CN101987294A CN101987294A CN2009101088697A CN200910108869A CN101987294A CN 101987294 A CN101987294 A CN 101987294A CN 2009101088697 A CN2009101088697 A CN 2009101088697A CN 200910108869 A CN200910108869 A CN 200910108869A CN 101987294 A CN101987294 A CN 101987294A
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Abstract
The invention provides a method for preparing a honeycomb ceramic adsorbent material by utilizing attapulgite clay, which comprises the following steps of: after adding a plasticizer and water into the attapulgite clay, mixing, kneading into a mass and extruding for forming, and then obtaining a finished product through the processes of aging, drying and calcination. The honeycomb ceramic adsorbent material prepared by the method can adsorb and purify NOx, VOCs, NH3, H2S, SO2 and other harmful gases with high efficiency, and has the advantages of high mechanical strength, small air resistance, large porosity and specific surface area, large adsorption capacity, good stability, low cost, repeatable regeneration for use, and the like.
Description
Technical field
The present invention relates to the sorbing material preparing technical field, particularly a kind of method of utilizing Concave-convex clay rod to prepare the ceramic honey comb sorbing material, this sorbing material can be widely used in field of purification such as gas and sewage.
Background technology
Concave-convex clay rod has another name called palygorskite or Palygorskite, is the natural nano-mineral material with nanochannel structure that a kind of chain stratiform contains Shuifu County's magnesium.It has physicochemical characteristics such as specific area is big, ion exchangeable, better chemical stability, high-hydroscopicity, strong adsorption bleaching, is widely used as adsorbent, catalyst carrier and antiseptic carrier etc.In decades, Concave-convex clay rod has obtained application in fields such as oil, chemical industry, daily-use chemical industry, fine chemistry industry, food processings, therefore is described as " thousand kinds of kings with soil, ten thousand soil ".
The particulate burning purifying material made from Concave-convex clay rod can efficiently adsorb the little molecule harmful substances such as organophosphor, hydrogen sulfide, gaseous state benzene class and alcohols in the atmosphere, compare with sorbing materials such as active carbons, it has, and adsorption efficiency height, cost are low, production technology simply, does not produce characteristics such as secondary pollution.It is major ingredient that Chinese invention patent CN 1394664A discloses a kind of 80% concavo-convex rod, 6% manganese ore, 5% sodium carbonate, the spherical filtering material that 3% titanium dioxide and 6% the crushed crude pearlite that has foamed are mixed and processed, it can be used for the various liquids and gases purification filtering material that temperature is not higher than 400 ℃, has overcome that general ceramic filter material porosity is little, specific area is low, retaining power is poor, accommodation is little and do not have problems such as decoloring ability.This concavo-convex rod spherical filtering material is better to the clean-up effect of sewage.It is raw material with the Concave-convex clay rod that Chinese invention patent CN 1593743A discloses a kind of, dries after acidification, adds the concave-convex rod particle absorption filter agent of the common abrasive dust of rice hulls, granulation and roasting system again.It has particle surface coarse hard, specific area is big, adsorption bleaching characteristic good, filter the advantage that retaining power is strong and the life-span is long, be applicable to purify and the sewage disposal of city river.More than two patents of invention only related to purification to sewage, and to the adsorption cleaning of gas molecules pollutant relate to less.
Chinese invention patent CN 1597088A discloses a kind of preparation of Concave-convex clay rod desulfurization adsoption catalyst.It is a raw material with the Concave-convex clay rod, adds compound iron, pyrolusite and water and stirs, and extrusion modling is then carried out calcination activation again and made finished product.The hydrogen sulfide of 2500ppm can be adsorbed to deviate from below 5ppm, show good clean-up effect, but not relate to NOx, VOCs, NH
3And SO
2Purification Deng pernicious gas.It is the catalyzing carbon monoxide oxidation catalyst of carrier loaded 4~30wt% cupric oxide that Chinese invention patent CN 101288847A utilizes the natural attapulgite clay, can be CO with the complete catalytic oxidation of 10%CO in the air (volume ratio) under 120 ℃ condition
2But its serviceability temperature is higher, is not suitable for constant temperature catalyzing and purifies CO, has limited it and has used more widely.
Summary of the invention
The invention provides a kind of method of utilizing Concave-convex clay rod to prepare the ceramic honey comb sorbing material, can be to NOx, VOCs, NH
3, H
2S and SO
2Deng pernicious gas adsorption cleaning efficiently, have simultaneously that mechanical strength height, vapour lock are little, porosity and advantages such as specific area is big, adsorption capacity big, good stability, the low renewable repeated use of cost.
To achieve these goals, the invention provides following technical scheme:
A kind of method of utilizing Concave-convex clay rod to prepare the ceramic honey comb sorbing material behind interpolation plasticiser and the water, through mixing, rubbing, extrusion modling, makes finished product through ageing, oven dry and calcining process then in Concave-convex clay rod.
Wherein, Concave-convex clay rod is acidified processing, and its particle is 100~1000 purpose powders.
Wherein, batching consisting of: 88~52% Concave-convex clay rod, 2~18% plasticiser and 10~30% water according to percentage by weight.
Wherein, described plasticiser comprises one or more compositions of starch, gum arabic, tung oil, paraffin, glycerine, dextrin, polyvinyl alcohol, methylcellulose, phenolic resins.
Wherein, described Concave-convex clay rod, plasticiser and water mix placement rubbing again after 5~48 hours with mixer.
Wherein, described extrusion forming process is: at low pressure 3~5MPa pressurize 1~10 minute, continuously extruding and molding under the highest briquetting pressure 10~40MPa.
Wherein, described digestion time is 24~72 hours.
Wherein, dried 6~24 hours down at 50~150 ℃, the moisture after the oven dry answers<3%.
Wherein, 200~1300 ℃ of following roastings 2~10 hours;
Wherein, the finished product of described ceramic honey comb sorbing material is 50~400 hole/square inches, and appearance and size is: long, and 50mm~200mm; Wide, 50mm~200mm; Height, 50mm~1000mm.
By above technical scheme as can be seen, the method of utilizing Concave-convex clay rod to prepare the ceramic honey comb sorbing material provided by the invention, after in Concave-convex clay rod, adding plasticiser and water,, make finished product through ageing, oven dry and calcining process then through mixing, rubbing, extrusion modling.Can be to NOx, VOCs, NH
3, H
2S and SO
2Deng pernicious gas adsorption cleaning efficiently, have simultaneously that mechanical strength height, vapour lock are little, porosity and advantages such as specific area is big, adsorption capacity big, good stability, the low renewable repeated use of cost.Particularly as NOx, VOCs, NH
3, H
2S and SO
2When being 1~2000ppm Deng the aerial content of gas pollutant, this ceramic honey comb sorbing material shows the good adsorption purifying property.
The specific embodiment
Technical scheme is for a better understanding of the present invention described embodiment provided by the invention in detail below in conjunction with accompanying drawing.
The method of utilizing Concave-convex clay rod to prepare the ceramic honey comb sorbing material provided by the invention with add plasticiser and water in Concave-convex clay rod after, through mixing, rubbing, extrusion modling, makes finished product through ageing, oven dry and calcining process then.Can be to NOx, VOCs, NH
3, H
2S and SO
2Deng pernicious gas adsorption cleaning efficiently, have simultaneously that mechanical strength height, vapour lock are little, porosity and advantages such as specific area is big, adsorption capacity big, good stability, the low renewable repeated use of cost.As shown in Figure 1, this method specifically comprises step:
101, batching (percentage by weight), with 62% water through dried 200~300 order Concave-convex clay rods of acidifying, 18% plasticiser and 20% in mixer, fully mix place 6 hours after rubbing make blank;
102, the blank of making in the step 101 is transferred to carries out extrusion molding in the single lead screw ex truding briquetting machine, in low pressure 3MPa pressurize after 3 minutes, boost to again that continuously extruding and molding is a briquet under the 25MPa;
103, with ageing under the briquet placement room temperature of extrusion molding in the step 102 48 hours;
104, briquet that ageing is good is placed in the air dry oven and is carried out drying, and condition is: 50 ℃ of oven dry 3 hours down, and 70 ℃ of oven dry 2 hours down, 90 ℃ of oven dry 2 hours down, 110 ℃ of oven dry 3 hours down finally make moisture<3%;
105, the briquet with oven dry moves to and carries out calcining process in the Muffle furnace, and condition is: heating rate is 5 ℃/minute, rises to 200 ℃ of insulations 2 hours; Heating rate is 10 ℃/minute, rises to the Concave-convex clay rod ceramic honey comb sorbing material finished product that 100 hole/square inches of taking-up (mm of unit) 100 * 100 * 100 after the room temperature are reduced in 500 ℃ of insulations after 3 hours naturally.
More than a kind of method of utilizing Concave-convex clay rod to prepare the ceramic honey comb sorbing material that the embodiment of the invention provided is described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. a method of utilizing Concave-convex clay rod to prepare the ceramic honey comb sorbing material is characterized in that, behind interpolation plasticiser and the water, through mixing, rubbing, extrusion modling, makes finished product through ageing, oven dry and calcining process then in Concave-convex clay rod.
2. method according to claim 1 is characterized in that Concave-convex clay rod is acidified processing, and its particle is 100~1000 purpose powders.
3. method according to claim 1 is characterized in that, batching consisting of according to percentage by weight: 88~52% Concave-convex clay rod, 2~18% plasticiser and 10~30% water.
4. method according to claim 1 is characterized in that described plasticiser comprises one or more compositions of starch, gum arabic, tung oil, paraffin, glycerine, dextrin, polyvinyl alcohol, methylcellulose, phenolic resins.
5. method according to claim 1 is characterized in that, described Concave-convex clay rod, plasticiser and water mix with mixer and places rubbing again after 5~48 hours.
6. method according to claim 1 is characterized in that described extrusion forming process is: at low pressure 3~5MPa pressurize 1~10 minute, continuously extruding and molding under the highest briquetting pressure 10~40MPa.
7. method according to claim 1 is characterized in that described digestion time is 24~72 hours.
8. method according to claim 1 is characterized in that, 50~150 ℃ of oven dry 6~24 hours down, the moisture after the oven dry should<3%.
9. method according to claim 1 is characterized in that, 200~1300 ℃ of following roastings 2~10 hours;
10. method according to claim 1 is characterized in that finished product is 50~400 hole/square inches, and appearance and size is: long, and 50mm~200mm; Wide, 50mm~200mm; Height, 50mm~1000mm.
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Cited By (26)
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CN102580703A (en) * | 2012-03-19 | 2012-07-18 | 张国强 | Method for preparing efficient air purification material |
CN102716715A (en) * | 2012-03-18 | 2012-10-10 | 镇江巨茂分子筛有限公司 | Ball-type molecular sieve adsorbent with high adsorption capacity |
CN102728357A (en) * | 2012-05-29 | 2012-10-17 | 南京林业大学 | Preparation method for multifunctional TiO2 immobilized catalyst with self-protection effect |
CN103641507A (en) * | 2013-11-28 | 2014-03-19 | 江苏高淳陶瓷实业有限公司 | Zeolite-attapulgite composite honeycomb body and preparation method thereof |
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CN101306343A (en) * | 2007-11-14 | 2008-11-19 | 中国科学院南京土壤研究所 | Method for preparing water body dephosphorized granule adsorbent using attapulgite clay |
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CN1049111A (en) * | 1990-07-03 | 1991-02-13 | 四川建筑材料工业学院 | The acid soak acid heat activation of Concave-convex clay rod |
CN1283517A (en) * | 2000-06-25 | 2001-02-14 | 宁波绿色医疗设备有限公司 | Process for preparing effecient granular adsorbent to adsorb anesthetic gas |
CN101306343A (en) * | 2007-11-14 | 2008-11-19 | 中国科学院南京土壤研究所 | Method for preparing water body dephosphorized granule adsorbent using attapulgite clay |
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