CN1425496A - Adsorbent for adsorbing alkali metal steam and its preparing method - Google Patents
Adsorbent for adsorbing alkali metal steam and its preparing method Download PDFInfo
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- CN1425496A CN1425496A CN 02139942 CN02139942A CN1425496A CN 1425496 A CN1425496 A CN 1425496A CN 02139942 CN02139942 CN 02139942 CN 02139942 A CN02139942 A CN 02139942A CN 1425496 A CN1425496 A CN 1425496A
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- adsorbent
- alkali metal
- metal vapour
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Abstract
The present invention discloses a kind of adsorbent for eliminating alkali metal vapor in high temperature gas and its preparation process. The said adsorbent has active component comprising mineral with SiO2 and Al2O3 as main component, and proper amount of inorganic or organic adhesive and pore expanding agent to raise the adsorption capacity of the active component, the adsorbent porosity and stability. The present invention has the features of low cost and simple preparation process, and may be used in the fields of eliminating alkali metal vapor in high temperature fuel gas and other industrial gas.
Description
Technical field
The present invention relates to a kind of adsorbent that removes alkali metal vapour in the high-temperature gas and preparation method thereof.
Background technology
In fossil fuel high-temp combustion and conversion process, the part alkali metal compound will discharge with vapor form.Calculation of thermodynamics shows that NaCl and KCl are main existence forms.For example in coal gasification and combustion process and have under the condition that sulphur exists, the most of alkali metallic compound exists with chloride and sulphate form, when temperature is enough high, can contain the alkali metal compound steam of some in the gaseous product.In integrated gasification combined cycle for power generation (IGCC) system or other clean coal power generation technology, alkali metal vapour condensation in coal gas of high temperature or the flue gas will form thick molten film on the heat transmission equipment surface, solid particle in its meeting captured gas, thereby the formation of accelerated corrosion dirt causes direct harm to these equipment.By comparison, alkali metal vapour is more serious to the heat erosion problem of IGCC gas turbine blades material.At present, gas turbine manufacturer regulation, the concentration of alkali metal vapour must not surpass 0.024mg/m in the gas
3In fact, alkali metal concn often exceeds several magnitude than this permissible value in the high-temperature gas that mineral combustion or gasification produce, and therefore, Removing of Alkali Vapor in High Temperature Gas is very important.
Removing of alkali metal vapour requires to select and develop high efficiency adsorbent.More comparison and the mechanism research that concentrates on some inorganic compound absorption alkali metal vapours of correlative study both domestic and external, the rarely found report of patent of relevant high-temperature gas alkali metal vapour adsorbent.
Summary of the invention
One of purpose of the present invention is, a kind of adsorbent that removes alkali metal vapour in coal gas of high temperature or other industrial gasses that is applicable to is provided.
Two of purpose of the present invention is, a kind of above-mentioned adsorbent preparation method is provided.
Technical scheme
The key component of adsorbent of the present invention and content (mass percent) are as follows:
Kaolin 3-86%
Sepiolite 8-67%
Alum clay 0-60%
Diatomite 0-58%
Binding agent 2-15%
Expanding agent 1-19% is wherein: described binding agent is bentonite and/or Emathlite;
Described expanding agent is one or more the mixture in the blue or green powder in ammonium carbonate, methylcellulose and field.It is as follows to prepare adsorbent key step of the present invention:
Kaolin, sepiolite, alum clay, diatomite, binding agent and expanding agent are mixed according to the above ratio, add the water extruded moulding, the addition of water is the 1-5% of solids gross weight, promptly gets product behind 400-900 ℃ of following roasting 2-5h.
The present invention has utilized main component in some cheap mineral as the active component of alkali metal vapour adsorbent, uses expensive pure active component material.Binding agent that adds and expanding agent have not only improved the stability of adsorbent but also have made active component can bring into play maximum effect.Therefore, Ben Gaowen alkali metal vapour adsorbent has that degree of purification is good, alkali capacity height, preparation is simple and the low characteristics of cost.This adsorbent can be widely used in removing of alkali metal vapour in high-temperature fuel gas and other industrial gasses.
Specific implementation method
The present invention is further illustrated below by embodiment, but it does not influence protection scope of the present invention:
Embodiment 1
It is raw material that the high temperature alkali metal vapour adsorbent of present embodiment uses the blue or green powder 3% in kaolin 50% (weight, as follows), sepiolite 40%, bentonite 7% and field, through grinding extruded moulding, forms at 400 ℃ of roasting temperatures.Alkali metal vapour adsorption reaction condition is: alkali metal vapour concentration 130-150ppm, reaction velocity 1500hr
-1, 800 ℃ of reaction temperatures.This adsorbent can make the alkali metal vapour content of exit gas reduce in the allowed band alkali capacity 22.3%.
Embodiment 2
The high temperature alkali metal vapour adsorbent of present embodiment uses kaolin 55%, alum clay 35%, bentonite 7% and ammonium carbonate 3% to be raw material, through grinding extruded moulding, forms at 450 ℃ of roasting temperatures.Alkali metal vapour adsorption reaction condition is: alkali metal vapour concentration 120-140ppm, reaction velocity 1500hr
-1, 850 ℃ of reaction temperatures.This adsorbent can make the alkali metal vapour content of exit gas reduce in the allowed band alkali capacity 20.6%.
Embodiment 3
The high temperature alkali metal vapour adsorbent of present embodiment uses kaolin 40%, diatomite 30%, bentonite 12% and methylcellulose 18% to be raw material, through grinding extruded moulding, forms at 500 ℃ of roasting temperatures.Alkali metal vapour adsorption reaction condition is: alkali metal vapour concentration 110-130ppm, reaction velocity 1550hr
-1, 875 ℃ of reaction temperatures.This adsorbent can make the alkali metal vapour content of exit gas reduce in the allowed band alkali capacity 19.8%.
Embodiment 4
The high temperature alkali metal vapour adsorbent of present embodiment uses the blue or green powder 5% in kaolin 75%, sepiolite 10%, bentonite 10% and field to be raw material, through grinding extruded moulding, forms at 600 ℃ of roasting temperatures.Alkali metal vapour adsorption reaction condition is: alkali metal vapour concentration 180-200ppm, reaction velocity 1600hr
-1, 800 ℃ of reaction temperatures.This adsorbent can make the alkali metal vapour content of exit gas reduce in the allowed band alkali capacity 24.1%.
Embodiment 5
The high temperature alkali metal vapour adsorbent of present embodiment uses kaolin 20%, alum clay 55%, Emathlite 13% and methylcellulose 12% to be raw material, through grinding extruded moulding, forms at 700 ℃ of roasting temperatures.Alkali metal vapour adsorption reaction condition is: alkali metal vapour concentration 130-150ppm, reaction velocity 1700hr
-1, 825 ℃ of reaction temperatures.This adsorbent can make the alkali metal vapour content of exit gas reduce in the allowed band alkali capacity 20.9%.
Embodiment 6
The high temperature alkali metal vapour adsorbent of present embodiment uses kaolin 55%, alum clay 20%, Emathlite 8% and ammonium carbonate 17% to be raw material, through grinding extruded moulding, forms at 900 ℃ of roasting temperatures.Alkali metal vapour adsorption reaction condition is: alkali metal vapour concentration 100-120ppm, reaction velocity 1800hr
-1, 850 ℃ of reaction temperatures.This adsorbent can make the alkali metal vapour content of exit gas reduce in the allowed band alkali capacity 18.7%.
Claims (2)
1, a kind of adsorbent that adsorbs alkali metal vapour is characterized in that, the key component of described adsorbent and content
(mass percent) is as follows:
Kaolin 3-86%
Sepiolite 8-67%
Alum clay 0-60%
Diatomite 0-58%
Binding agent 2-15%
Expanding agent 1-19% is wherein: described binding agent is bentonite and/or Emathlite;
Described expanding agent is one or more the mixing in the blue or green powder in ammonium carbonate, methylcellulose and field
Thing.
2, the method for preparing the described adsorbent of claim 1, it is characterized in that, described preparation method's key step is that kaolin, sepiolite, alum clay, diatomite, binding agent and expanding agent are mixed in the described ratio of claim 1, add the water extruded moulding, the addition of water is the 1-5% of solids gross weight, promptly gets product behind 400-900 ℃ of following roasting 2-5h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021399425A CN1141176C (en) | 2002-12-30 | 2002-12-30 | Adsorbent for adsorbing alkali metal steam and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021399425A CN1141176C (en) | 2002-12-30 | 2002-12-30 | Adsorbent for adsorbing alkali metal steam and its preparing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1425496A true CN1425496A (en) | 2003-06-25 |
| CN1141176C CN1141176C (en) | 2004-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021399425A Expired - Fee Related CN1141176C (en) | 2002-12-30 | 2002-12-30 | Adsorbent for adsorbing alkali metal steam and its preparing method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102188962A (en) * | 2010-03-11 | 2011-09-21 | 上海宝钢化工有限公司 | Coal-based phenol high-purity refined catalysis adsorbent and preparation method thereof |
| CN102274717A (en) * | 2011-08-10 | 2011-12-14 | 农业部环境保护科研监测所 | Method for preparing thio-modified sepiolite heavy metal absorbent |
| CN106076276A (en) * | 2016-07-05 | 2016-11-09 | 章俊 | A kind of Industrial Wastewater Treatment adsorbent and preparation method thereof |
| CN107185484A (en) * | 2017-05-04 | 2017-09-22 | 明光市飞洲新材料有限公司 | A kind of adsorbent preparation technology |
| CN107473943A (en) * | 2017-08-22 | 2017-12-15 | 江苏鼎烨药业有限公司 | A kind of preparation method of 2,6 orcin |
-
2002
- 2002-12-30 CN CNB021399425A patent/CN1141176C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102188962A (en) * | 2010-03-11 | 2011-09-21 | 上海宝钢化工有限公司 | Coal-based phenol high-purity refined catalysis adsorbent and preparation method thereof |
| CN102274717A (en) * | 2011-08-10 | 2011-12-14 | 农业部环境保护科研监测所 | Method for preparing thio-modified sepiolite heavy metal absorbent |
| CN106076276A (en) * | 2016-07-05 | 2016-11-09 | 章俊 | A kind of Industrial Wastewater Treatment adsorbent and preparation method thereof |
| CN106076276B (en) * | 2016-07-05 | 2017-07-07 | 章俊 | A kind of Industrial Wastewater Treatment adsorbent and preparation method thereof |
| CN107185484A (en) * | 2017-05-04 | 2017-09-22 | 明光市飞洲新材料有限公司 | A kind of adsorbent preparation technology |
| CN107473943A (en) * | 2017-08-22 | 2017-12-15 | 江苏鼎烨药业有限公司 | A kind of preparation method of 2,6 orcin |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1141176C (en) | 2004-03-10 |
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