CN105032164A - Carbon dioxide absorbent taking magnesium oxide as main material and preparation method for carbon dioxide absorbent - Google Patents
Carbon dioxide absorbent taking magnesium oxide as main material and preparation method for carbon dioxide absorbent Download PDFInfo
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- CN105032164A CN105032164A CN201510404057.2A CN201510404057A CN105032164A CN 105032164 A CN105032164 A CN 105032164A CN 201510404057 A CN201510404057 A CN 201510404057A CN 105032164 A CN105032164 A CN 105032164A
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- Prior art keywords
- dioxide absorbent
- absorbent
- carbon
- magnesia
- carbon dioxide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention relates to a carbon dioxide absorbent taking magnesium oxide as a main material and a preparation method for the carbon dioxide absorbent, and belongs to the field of clearing of carbon dioxide in a sealed space environment. Based on 100% of the total mass of an absorbent formula, the absorbent consists of the following components in percentage by mass: 80-85% of magnesium oxide, 12-17% of lithium hydroxide monohydrate and 3-5% of a sodium hydroxide aqueous solution with mass fraction of 5-10%; the magnesium oxide is obtained by roasting basic magnesium carbonate for 1-3 hours at 320-400 DEG C; the absorbent has density of 1.5-1.9g/cm3, and has a grain size of 2-6mm. The magnesium oxide, the lithium hydroxide monohydrate and the sodium hydroxide solution are uniformly mixed to obtain a mixture; the mixture is pressed into a drug plate; the drug plate is crushed into particles; and finally, the particles are dried to obtain the absorbent. The absorbent is unchanged in particle size before and after absorbing, unchanged in bed-layer resistance in an absorbing process, good and stable in absorbing performance, and relatively small in production cost, and generates less water vapor. The method is simple, and required equipment is less.
Description
Technical field
The present invention relates to a kind of take magnesia as carbon-dioxide absorbent and the preparation method of main material, belongs to the carbon dioxide removal field for confined space environment.
Background technology
Carbon-dioxide absorbent is the non-renewable type medicament of one for confined space absorbing and eliminating carbon dioxide, is widely used in the oxygen supply field of the confined spaces such as naval vessels, Aero-Space, mine safety cabin, safe chamber.
Carbon-dioxide absorbent is in the market generally soda lime and lithium hydroxide medicament, and wherein, the main component of soda lime is calcium hydroxide and NaOH, and the using method of described carbon-dioxide absorbent is as follows:
Loaded by carbon-dioxide absorbent in tourie, utilize pump or fan to be used as power to make air containing carbon dioxide by tourie, carbon dioxide is absorbed by the soda lime in tourie or lithium hydroxide bed, and clean air is expelled to ambient air from tourie.
Wherein, every gram of soda lime about Absorbable rod 0.35g carbon dioxide, its advantage is low price, shortcoming is after absorbing carbon dioxide, and soda lime particle becomes large, makes the resistance of tourie become large gradually, the absorption efficiency of tourie is caused to reduce, and in soda lime containing have an appointment 20% moisture, in use procedure, moisture is evaporated, and ambient humidity is increased; Every gram of lithium hydroxide medicament about Absorbable rod 0.9g carbon dioxide, absorption efficiency is higher, and tourie resistance is almost constant in absorption process, but its shortcoming to be price more expensive, application cost is high.
Summary of the invention
For the defect that prior art exists, it take magnesia as the carbon-dioxide absorbent of main material that an object of the present invention is to provide a kind of, described carbon-dioxide absorbent stable performance.
It take magnesia as the preparation method of the carbon-dioxide absorbent of main material that two of object of the present invention is to provide a kind of, and described method production cost is low, and step is simple, and equipment is less, obtained carbon-dioxide absorbent stable performance.
The object of the invention is to be achieved through the following technical solutions.
Take magnesia as a carbon-dioxide absorbent for main material, the oeverall quality of filling a prescription in described carbon-dioxide absorbent is 100%, wherein, each constituent and mass percent as follows:
Magnesia 80% ~ 85%,
Monohydrate lithium hydroxide 12% ~ 17%,
Sodium hydrate aqueous solution 3% ~ 5%;
Described magnesia is the product obtained after roasting 1h ~ 3h at 320 DEG C ~ 400 DEG C by basic magnesium carbonate;
The mass percent of described sodium hydrate aqueous solution is 5% ~ 10%;
The density of described carbon-dioxide absorbent is 1.5g/cm
3~ 1.9g/cm
3, particle diameter is 2mm ~ 6mm.
Of the present invention take magnesia as the preparation method of the carbon-dioxide absorbent of main material, and described method step is as follows:
Magnesia, monohydrate lithium hydroxide and sodium hydroxide solution are mixed and obtain medicament, medicament being compressed to density is 1.5g/cm
3~ 1.9g/cm
3medicine plate, the fragmentation of medicine plate granulated, to obtain particle diameter be 2mm ~ 6mm pharmacy particle in screening, pharmacy particle dried 3h ~ 6h at 100 DEG C ~ 140 DEG C, obtains carbon-dioxide absorbent of the present invention.
Beneficial effect
1. the invention provides a kind of take magnesia as the carbon-dioxide absorbent of main material, magnesia in described carbon-dioxide absorbent is the product obtained after roasting 1h ~ 3h at 320 DEG C ~ 400 DEG C by basic magnesium carbonate, magnesia is the key factor affecting described carbon-dioxide absorbent absorbent properties, and the absorbent properties of the carbon-dioxide absorbent that the magnesia adopting additive method to prepare is made are lower; The mass percent of described sodium hydrate aqueous solution is 5% ~ 10%, and the concentration of sodium hydrate aqueous solution can affect magnesian hydroxy activated property; The density of described carbon-dioxide absorbent is 1.5g/cm
3~ 1.9g/cm
3, density can affect the intensity of carbon-dioxide absorbent, porous and absorption efficiency, and described compact density can make carbon-dioxide absorbent both proof strengths, has again good porous and absorption efficiency; Particle diameter is 2mm ~ 6mm, and affect absorption efficiency and the bed resistance of medicament, in general, particle diameter is less, and absorption efficiency is better, and medicament bed resistance is larger;
2. the invention provides a kind of take magnesia as the carbon-dioxide absorbent of main material, and described carbon-dioxide absorbent production cost compared with lithium hydroxide medicament is little;
3. the invention provides a kind of take magnesia as the carbon-dioxide absorbent of main material, described carbon-dioxide absorbent compared with soda lime after absorbing carbon dioxide absorbent granules size constant, in absorption process, bed resistance is constant; Steam is produced less in absorption process, little on ambient humidity impact;
4. the invention provides a kind of take magnesia as the carbon-dioxide absorbent of main material, Absorbable rod about 0.5 gram of carbon dioxide when every gram of described carbon-dioxide absorbent absorbs completely;
5. the invention provides a kind of take magnesia as the preparation method of the carbon-dioxide absorbent of main material, in described method, bake out temperature is 100 DEG C ~ 140 DEG C, bake out temperature can affect the formation of magnesia and lithium hydroxide compound tense hydroxyl, can affect the absorbent properties of carbon-dioxide absorbent; Described drying time is 3h ~ 6h, and drying time can affect the formation of magnesia and lithium hydroxide compound tense hydroxyl, can affect the absorbent properties of carbon-dioxide absorbent;
6. the invention provides a kind of take magnesia as the preparation method of the carbon-dioxide absorbent of main material, and described method is simple, and equipment needed thereby is few.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further elaborated, but the present invention is not limited to following examples.
Embodiment 1
A kind of take magnesia as the carbon-dioxide absorbent of main material, in the oeverall quality of described carbon-dioxide absorbent for 100%, wherein, each constituent and mass percent as follows: magnesia: 85%, monohydrate lithium hydroxide: 12%, mass percent is the sodium hydrate aqueous solution of 10%: 3%; Wherein, described magnesia is that 1000g basic magnesium carbonate is loaded Muffle furnace, the product obtained after roasting 2h at 365 DEG C; The density of described carbon-dioxide absorbent is 1.6g/cm
3, particle diameter is 2mm ~ 6mm.
Described in a kind of the present embodiment is that preparation method's step of the carbon-dioxide absorbent of main material is as follows with magnesia:
Magnesia, monohydrate lithium hydroxide and sodium hydroxide solution are mixed and obtain medicament, medicament being loaded mould, to be pressed into density be 1.6g/cm
3medicine plate, the fragmentation of medicine plate granulated, to obtain particle diameter be 2mm ~ 6mm pharmacy particle in screening, pharmacy particle dried 4h at 120 DEG C, obtains described carbon-dioxide absorbent.
Carbon-dioxide absorbent described in 50g is loaded the tourie of diameter 30mm, pass into carbon dioxide, Absorbable rod carbon dioxide 24.6g.Bed resistance 830Pa before absorbing, bed resistance 833Pa after absorbing, in absorption process, bed resistance has almost no change, and almost do not have steam to produce in absorption process, visually observe the medicament after absorption, its granular size has almost no change.
Embodiment 2
A kind of take magnesia as the carbon-dioxide absorbent of main material, in the oeverall quality of described carbon-dioxide absorbent for 100%, wherein, each constituent and mass percent as follows: magnesia: 80%, monohydrate lithium hydroxide: 15%, mass percent is the sodium hydrate aqueous solution of 8%: 5%; Wherein, described magnesia is that 1000g basic magnesium carbonate is loaded Muffle furnace, the product obtained after roasting 3h at 320 DEG C; The density of described carbon-dioxide absorbent is 1.9g/cm
3, particle diameter is 2mm ~ 6mm.
Described in a kind of the present embodiment is that preparation method's step of the carbon-dioxide absorbent of main material is as follows with magnesia:
Magnesia, monohydrate lithium hydroxide and sodium hydroxide solution are mixed and obtain medicament, medicament being loaded mould, to be pressed into density be 1.9g/cm
3medicine plate, the fragmentation of medicine plate granulated, to obtain particle diameter be 2mm ~ 6mm pharmacy particle in screening, pharmacy particle dried 3h at 140 DEG C, obtains described carbon-dioxide absorbent.
Carbon-dioxide absorbent described in 50g is loaded the tourie of diameter 30mm, pass into carbon dioxide, Absorbable rod carbon dioxide 25.6g.Bed resistance 750Pa before absorbing, bed resistance 756Pa after absorbing, in absorption process, bed resistance has almost no change, and almost do not have steam to produce in absorption process, visually observe the medicament after absorption, its granular size has almost no change.
Embodiment 3
A kind of take magnesia as the carbon-dioxide absorbent of main material, in the oeverall quality of described carbon-dioxide absorbent for 100%, wherein, each constituent and mass percent as follows: magnesia: 80%, monohydrate lithium hydroxide: 17%, mass percent is the sodium hydrate aqueous solution of 5%: 3%; Wherein, described magnesia is that 1000g basic magnesium carbonate is loaded Muffle furnace, the product obtained after roasting 1h at 400 DEG C; The density of described carbon-dioxide absorbent is 1.5g/cm
3, particle diameter is 2mm ~ 6mm.
Described in a kind of the present embodiment is that preparation method's step of the carbon-dioxide absorbent of main material is as follows with magnesia:
Magnesia, monohydrate lithium hydroxide and sodium hydroxide solution are mixed and obtain medicament, medicament being loaded mould, to be pressed into density be 1.5g/cm
3medicine plate, the fragmentation of medicine plate granulated, to obtain particle diameter be 2mm ~ 6mm pharmacy particle in screening, pharmacy particle dried 6h at 100 DEG C, obtains described carbon-dioxide absorbent.
Carbon-dioxide absorbent described in 50g is loaded the tourie of diameter 30mm, pass into carbon dioxide, Absorbable rod carbon dioxide 24.2g.Bed resistance 855Pa before absorbing, bed resistance 861Pa after absorbing, in absorption process, bed resistance has almost no change, and almost do not have steam to produce in absorption process, visually observe the medicament after absorption, its granular size has almost no change.
Claims (2)
1. be a carbon-dioxide absorbent for main material with magnesia, it is characterized in that: the oeverall quality of filling a prescription in described carbon-dioxide absorbent is 100%, each constituent and mass percent as follows:
Magnesia 80% ~ 85%,
Monohydrate lithium hydroxide 12% ~ 17%,
Sodium hydrate aqueous solution 3% ~ 5%;
Described magnesia is the product obtained after roasting 1h ~ 3h at 320 DEG C ~ 400 DEG C by basic magnesium carbonate;
The mass percent of described sodium hydrate aqueous solution is 5% ~ 10%;
The density of described carbon-dioxide absorbent is 1.5g/cm
3~ 1.9g/cm
3, particle diameter is 2mm ~ 6mm.
2. be a preparation method for the carbon-dioxide absorbent of main material as claimed in claim 1 with magnesia, it is characterized in that: described method step is as follows:
Magnesia, monohydrate lithium hydroxide and sodium hydroxide solution are mixed and obtain medicament, medicament being compressed to density is 1.5g/cm
3~ 1.9g/cm
3medicine plate, the fragmentation of medicine plate granulated, to obtain particle diameter be 2mm ~ 6mm pharmacy particle in screening, pharmacy particle dried 3h ~ 6h at 100 DEG C ~ 140 DEG C, obtains described carbon-dioxide absorbent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510404057.2A CN105032164B (en) | 2015-07-10 | 2015-07-10 | Carbon dioxide absorbent taking magnesium oxide as main material and preparation method for carbon dioxide absorbent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510404057.2A CN105032164B (en) | 2015-07-10 | 2015-07-10 | Carbon dioxide absorbent taking magnesium oxide as main material and preparation method for carbon dioxide absorbent |
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|---|---|
| CN105032164A true CN105032164A (en) | 2015-11-11 |
| CN105032164B CN105032164B (en) | 2017-05-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109790044A (en) * | 2016-07-27 | 2019-05-21 | 国家科学研究学院 | The magnesia of low-carbon emission produces |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3489693A (en) * | 1967-04-03 | 1970-01-13 | Automatic Sprinkler Corp | Carbon dioxide absorbent |
| CN101104128A (en) * | 2007-08-01 | 2008-01-16 | 煤炭科学研究总院抚顺分院 | Carbon dioxide absorbent and preparation method |
| CN102580468A (en) * | 2012-01-20 | 2012-07-18 | 河南科技大学 | Method for implementing trapping and separation of CO2 in flue gas by adopting magnesium-based absorbent |
| CN103920381A (en) * | 2013-09-30 | 2014-07-16 | 安徽养和医疗器械设备有限公司 | Carbon dioxide absorbent |
| CN104399359A (en) * | 2014-11-10 | 2015-03-11 | 苏州维泰生物技术有限公司 | Medical carbon dioxide absorbent and preparation method thereof |
-
2015
- 2015-07-10 CN CN201510404057.2A patent/CN105032164B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3489693A (en) * | 1967-04-03 | 1970-01-13 | Automatic Sprinkler Corp | Carbon dioxide absorbent |
| CN101104128A (en) * | 2007-08-01 | 2008-01-16 | 煤炭科学研究总院抚顺分院 | Carbon dioxide absorbent and preparation method |
| CN102580468A (en) * | 2012-01-20 | 2012-07-18 | 河南科技大学 | Method for implementing trapping and separation of CO2 in flue gas by adopting magnesium-based absorbent |
| CN103920381A (en) * | 2013-09-30 | 2014-07-16 | 安徽养和医疗器械设备有限公司 | Carbon dioxide absorbent |
| CN104399359A (en) * | 2014-11-10 | 2015-03-11 | 苏州维泰生物技术有限公司 | Medical carbon dioxide absorbent and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109790044A (en) * | 2016-07-27 | 2019-05-21 | 国家科学研究学院 | The magnesia of low-carbon emission produces |
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Address after: 056027 No. 17, Exhibition Road, Handan, Hebei Patentee after: 718th Research Institute of China Shipbuilding Corp. Address before: 056027 No. 17, Exhibition Road, Handan, Hebei Patentee before: Handan Purifying Equipment Research Institute |
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