CN104107620A - CO2 purifying structure of solid amine embedded metallic aluminum foam - Google Patents
CO2 purifying structure of solid amine embedded metallic aluminum foam Download PDFInfo
- Publication number
- CN104107620A CN104107620A CN201410360640.3A CN201410360640A CN104107620A CN 104107620 A CN104107620 A CN 104107620A CN 201410360640 A CN201410360640 A CN 201410360640A CN 104107620 A CN104107620 A CN 104107620A
- Authority
- CN
- China
- Prior art keywords
- aluminum foam
- bed
- solid amine
- desorption
- purifying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a CO2 purifying structure of solid amine embedded metallic aluminum foam. The CO2 purifying structure comprises a plurality of purifying bed layers which are overlapped together in parallel, wherein a heat conducting dividing wall is arranged between the adjacent purifying bed layers, each purifying bed layer is a continuous slab framework composed of through hole aluminum foam, solid amine particles are packaged in the through hole aluminum foam, an inlet switch which can be switched on due to adsorption and switched off along due to desorption is arranged at one end of each purifying bed layer, a vacuumizing system which is in a closing state during adsorption and is in an opening state during desorption is connected to the other end of the purifying bed layer, and when one purifying bed layer is in an adsorption state, the adjacent purifying bed layers are in a desorption state. According to the CO2 purifying structure, through continuous and repeated conversion of an adsorption bed and a desorption bed, the integration of self-adaptive adsorption and desorption of CO2 is realized. By adopting the CO2 purifying structure, the complexity of a system is lowered by adopting a thermal vacuum condition; the adsorption heat is applied to desorption reaction, and thus the energy consumption of the system is reduced.
Description
Technical field
The present invention relates to a kind of renewable CO
2treatment facilities, particularly a kind of CO of solid amine embedded metal aluminum foam
2treatment facilities.
Background technology
In man-machine confined space, because the reasons such as personnel's breathing, plant equipment operation and material oxidation burning all can produce CO
2, and the CO of concentration over-standard
2can upset human normal metabolism, threaten personnel's life security.In addition, for hypogees such as the subway of ventilation condition harshness and mines, control CO
2concentration is the important prerequisite that maintains normal existence environment and accident treatment.Therefore carry out confined space CO
2purified treatment confined space personnel life support and hypogee public safety are had great importance.
Purify CO
2material be divided into renewable and non-renewable two classes, wherein, the peroxide of alkali metal hydroxide, alkalies and alkaline earth and superoxides belong to non-renewable formula absorbent, and molecular sieve, metal oxide, liquid amine and solid amine resin are renewable formula absorbent.Solid amine is that polystyrene is remarried and connect the resin that diethylenetriamine or triethylene tetramine form after chloromethylation, and particle diameter is 0.3～1.5mm, and aperture is about 5nm, specific area >50m
2/ g, is that microporous spherical porous medium is permitted in a kind of inside, and has good heat endurance and mechanical strength.The essence of solid amine is a kind of anion weakly base resin, energy and CO
2deng sour gas generation acid-base reaction, after changing reaction condition, can realize the Reversible Regeneration of solid amine, under water participates in, its chemical principle is suc as formula (1).
In equation, x=1,2,3, y=2,1,0; Z=3,2,1 reaction products that correspondence is primary, secondary, tertiary amine is corresponding respectively, in formula, LT, HT, LP and HP refer to respectively low temperature, high temperature, low pressure and high pressure.
Solid amine adsorption CO
2there is the features such as high selectivity, low-corrosiveness and easy reproducibility, now become CO
2research tendency in renewable purification techniques.From existing document, the research emphasis of solid amine technology is mainly the Preparation and evaluation of material and the Design and manufacture of application apparatus.At present, solid amine absorption/steam desorb (SAWD) is to control CO in space
2the method that concentration extensively adopts, also there is relevant experiment and application report both at home and abroad, but because its sorption and desorption process hockets in same solid amine reaction bed, and the required steam of desorb need to be equipped with steam generator and gas separator, complexity and the operation energy consumption of system have not only been increased, also increased the weight of the load of MCS, affected safety and the service life of instrument and equipment simultaneously.
Than physical absorption, chemisorbed and desorption process are respectively stronger heat release and the endothermic reaction.But exotherm can make solid amine temperature raise, and then affect its stability and itself and CO
2reactivity worth; And desorption process often needs directly or indirectly heating, this has increased again complexity and the energy consumption of system.Therefore, in adsorption-desorption process, the control and management of temperature produces very important impact to the running of system and performance.In vertical adsorbent bed, patent US 007264651 B2 is placed in suitable adsorption layer position by storage heater, forms inner recuperation layer and alleviates the temperature rising that exotherm causes.During the desorption problem of patent CN200810111553.9 adsorbent in solving air cleaning unit, absorbing unit is placed in the high-temperature region that heating element heater forms, to realize desorb.Adsorbent reactivation also adopts the method such as electric heater (US 4269611) and electric current desorb (US4094652) in heating using microwave (patent US 4312641), adsorbent bed simultaneously.Patent CN201110435118.3 has proposed new way solid amine absorption bed is in parallel with desorb bed, reduced respectively and increased adsorption and desorption temperature by heat-exchange system.
Due to the porous of granular adsorbent and the thermal contact resistance between grain and grain thereof, cause the heat conductivility of adsorbent bed inside very poor, thereby make sorption and desorption process time long, affect entire system operational effect.In order to solve this bottleneck, traditional method has the convection intensity of enhancing and increases heat transfer area to realize the object of augmentation of heat transfer; Also have scholar to propose the curing concept of adsorbent, the bulk density by improving adsorbent to be to reduce the thermal contact resistance between adsorbent, thereby improves the thermal conductivity factor of adsorbent.From present Research, adsorbent curing mainly contains two kinds of modes: a kind of is to utilize organic binder bond by the direct bonding of adsorbent, then carries out charing, activation processing; Another kind is in adsorbent, to add the material of the high thermal conductivity coefficients such as metal dust, and then is cured processing.But this solidify take that to sacrifice heat transfer property be cost often.
Summary of the invention
The object of the present invention is to provide a kind of CO of solid amine embedded metal aluminum foam
2treatment facilities, this CO
2treatment facilities can be realized the recycling of heat of adsorption, and has reduced complexity and the energy consumption of system, realizes integrated from adsorption and desorption of solid amine.
In order to achieve the above object, the technical solution used in the present invention is: comprise some parallel purification beds that are stacked together, between adjacent purification bed, be provided with heat conduction partition; Each purifies bed is the continuous strand framework that through hole aluminum foam forms, and is packaged with solid amine particle in through hole aluminum foam; The entry switch that one end of each purification bed is provided with and can opens with absorption, desorb is closed, the other end is connected to absorption and is closed condition, desorb pumped vacuum systems in opened condition, when one of them purification bed is adsorbed state, adjacent purification bed is desorption state.
The porosity ranges of described through hole aluminum foam is 0.60～0.97, pore diameter range is 3.0～5.0mm.
The particle diameter of described solid amine particle is 0.3～1.5mm, specific area >50m
2/ g.
Together with the flat sintered that described heat conduction partition forms with through hole aluminum foam.
Each purifies the sorption and desorption process of carrying out that bed replaces, and during absorption, fluid enters purification bed, the CO in the solid amine particle fluid-absorbent in through hole aluminum foam
2and produce heat, and heat passes to heat conduction partition by through hole aluminum foam, until absorption reaches capacity, proceeds to desorption process, and during desorb, the heat purifying on bed absorption heat conduction partition makes to have adsorbed CO
2solid amine particle under thermal vacuum condition, carry out desorb, until desorb completes, proceed to adsorption process.
Compared with prior art, beneficial effect of the present invention is:
The present invention purifies in the through hole aluminum foam in bed and has encapsulated solid amine particle, when adsorption bed is during in adsorbed state, and solid amine particle CO absorption
2and heat release, because through hole aluminum foam material of the present invention has high thermal conductivity factor, can be by heat of adsorption by heat conduction partition Transmit evenly to the adjacent CO that adsorbed
2purification bed; Because the gateway of this purification bed is closed, exit pumped vacuum systems is opened, therefore, and adsorbed CO before this purification bed under this negative pressure of vacuum environment and heat condition
2solid amine particle on the key of bicarbonate destroyed, thereby discharge CO
2, separate the CO of sucking-off
2at pressure reduction, order about lower outflow analytic sheaf, and take away part heat.When being the purification bed absorption of adsorbed state and reaching capacity state, the adjacent purification bed that is desorption state also stops desorb owing to having lacked thermal source, pumped vacuum systems is closed, open gateway, enter adsorbed state, adjacent purification bed starts to carry out desorb with it, therefore, adsorbed state and the parse state of the adjacent purification bed of the present invention are alternate repetitions, realize self-priming continuously and echo desorption process, whole device presents wall-type heat exchange structure, realizes integrated from adsorption and desorption of solid amine.And the present invention utilizes the CO on thermal vacuum desorb solid amine
2therefore, reduced the complexity of system.Meanwhile, because the purification bed of adsorbed state can pass to heat of adsorption the purification bed of desorption state, therefore, the present invention has realized the recycling of heat of adsorption, has reduced energy consumption, can be applied to the CO in confined space
2concentration is controlled and air cleaning.
Further, the present invention is by solid amine micropore, solid amine particle and the three kinds of embedded formation novel C of different scale structure O of through hole aluminum foam
2purifier, has significantly improved the performance of system response and mass-and heat-transfer.On the one hand, through hole aluminum foam has the advantages that specific area is large, thermal conductivity factor is high, permeability is higher, has significantly increased the contact point of adsorbent and heat exchange structure (being aluminum foam), is conducive to disperse the heat in whole bed, caloic is evenly transmitted, heat and mass transfer enhancement; Meanwhile, Leng Kejiang boundary layer, hole perpendicular with flow direction in through hole aluminum foam cuts off and fluid is mixed mutually, produces complicated Three-dimensional Flow, strengthens heat and mass.On the other hand, the adsorption bed structure of dividing wall type is passed to desorb bed by absorption heat production, and recycling system waste heat and simplified system architecture has been realized the alternately continuity self-priming of conversion and echoed desorption process.Therefore, the present invention is based on the coupled relation of absorption mass transfer and convection heat transfer' heat-transfer by convection, utilize through hole aluminum foam as the feature of lightweight compact heat exchanger, invented the integral structure of solid amine from adsorption and desorption, to control CO
2concentration and purifying air.
Accompanying drawing explanation
Fig. 1 is that solid amine of the present invention is from the integral structure schematic diagram of sorption and desorption;
Fig. 2 is the enlarged diagram of the local A of embedded hole aluminium in solid amine.
Wherein, 1-purification bed, 2-solid amine particle, 3-through hole aluminum foam, 4-heat conduction partition.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further details.
Referring to Fig. 1-2, the present invention includes some parallel purification beds 1 that are stacked together, between adjacent purification bed 1, be provided with heat conduction partition 4, therefore, arranged in series between the adjacent purification bed 1 of the present invention, each purifies the flat board that bed 1 be through hole aluminum foam 3 formations, and the porosity ranges of through hole aluminum foam 3 is 0.60～0.97, pore diameter range is 3.0～5.0mm.In through hole aluminum foam 3, be packaged with solid amine particle 2; The particle diameter of solid amine particle 2 is 0.3～1.5mm, specific area >50m
2/ g, heat conduction partition 4 is sintered together with through hole aluminum foam 3, the entry switch that one end of each purification bed 1 is provided with and can opens with absorption, desorb is closed, the other end is connected to absorption and is closed condition, desorb pumped vacuum systems in opened condition, when one of them purification bed is adsorbed state, adjacent purification bed is desorption state.Each purifies the sorption and desorption process of carrying out that bed replaces, and during absorption, fluid enters purification bed, the CO in solid amine particle 2 fluid-absorbent in through hole aluminum foam 3
2and produce heat, and heat passes to heat conduction partition 4 by through hole aluminum foam, until absorption reaches capacity, proceeds to desorption process, and during desorb, the heat purifying on bed absorption heat conduction partition makes to have adsorbed CO
2solid amine particle under thermal vacuum condition, carry out desorb, until desorb completes, proceed to adsorption process.
Operation principle of the present invention is: solid amine is to CO
2absorption be exothermic reaction, desorb is the endothermic reaction, when purifying bed 1 in adsorbed state, solid amine particle 2 CO absorption
2the adsorption reaction heat producing is also carried CO
2the sensible heat major part of air passes to heat conduction partition 4 with the form of air and through hole aluminum foam heat convection, heat conduction partition 4 transfers heat to it adjacent purification bed again, because this purifies bed in desorption state, therefore, these heats can provide needed heat for this purifies bed desorb, solid amine particle 2 CO absorption
2the adsorption reaction heat producing is also carried CO
2the sensible heat remainder of air is taken adsorption layer out of with the form of convection current or is changed the increment of system thermodynamic energy into.
When purifying bed two ends in Fig. 1 and being solid line, represent that the inlet switch of this purification bed is closed, and the pumped vacuum systems being connected with the port of export opens, this bed is in desorption state.Bed in desorption state has adsorbed the heat of heat conduction partition 4 and under negative pressure of vacuum, has destroyed the key of bicarbonate and discharge CO
2, separate the CO of sucking-off
2at pressure reduction, order about lower outflow analytic sheaf, and take away part heat.After absorption completes, purification bed in adsorbed state becomes desorption state, purification bed in desorption state become adsorbed state, purify like this bed with regard to the process of carrying out sorption and desorption that can alternate repetition, make the present invention realize self-priming continuously and echo desorption process.
In the present invention, the through hole aluminum foam continuous strand framework of sintering on heat conduction partition 4 is a kind of good heat transmission medium, can effectively improve the thermal conductivity factor of solid amine and increase heat exchange area; Adsorbed state and desorption state purify bed at one and submit for converting CO
2continuity self-priming echos desorption process; And be to adopt thermal vacuum desorb at desorption process, therefore overcome the defect of steam desorb, and the advantage that has simplied system structure and recycling system waste heat, and, the present invention is in conjunction with the coupled relation between chemical transmitter and convection heat transfer' heat-transfer by convection, realized the integral structure of solid amine from adsorption and desorption, to control CO
2concentration and purifying air.
The present invention is filled in solid amine 2 in through hole aluminum foam 3, and due to the enhanced heat exchange heat radiation of through hole aluminum foam, therefore, the present invention utilizes it as the focus of lightweight compact heat exchanger, improves the heat conductivility of adsorbent bed; Because the specific area of through hole aluminum foam is large, therefore, the present invention can utilize its trafficability performance effectively to increase the mass transfer area in adsorption process; Finally, Leng Kejiang boundary layer, hole perpendicular with flow direction in through hole aluminum foam of the present invention cuts off and fluid is mixed mutually, produces complicated Three-dimensional Flow, strengthens heat and mass simultaneously.
Claims (5)
1. the CO of solid amine embedded metal aluminum foam
2treatment facilities, is characterized in that: comprise some parallel purification beds (1) that are stacked together, be provided with heat conduction partition (4) between adjacent purification bed (1); Each purifies bed (1) is the continuous strand framework that through hole aluminum foam (3) forms, and is packaged with solid amine particle (2) in through hole aluminum foam (3); The entry switch that one end of each purification bed (1) is provided with and can opens with absorption, desorb is closed, the other end is connected to absorption and is closed condition, desorb pumped vacuum systems in opened condition, when one of them purification bed is adsorbed state, adjacent purification bed is desorption state.
2. the CO of solid amine embedded metal aluminum foam according to claim 1
2treatment facilities, is characterized in that: the porosity ranges of described through hole aluminum foam (3) is 0.60～0.97, pore diameter range is 3.0～5.0mm.
3. the CO of solid amine embedded metal aluminum foam according to claim 1
2treatment facilities, is characterized in that: the particle diameter of described solid amine particle (2) is 0.3～1.5mm, specific area >50m
2/ g.
4. the CO of solid amine embedded metal aluminum foam according to claim 1
2treatment facilities, is characterized in that: together with the flat sintered that described heat conduction partition (4) forms with through hole aluminum foam (3).
5. the CO of solid amine embedded metal aluminum foam according to claim 1
2treatment facilities, is characterized in that: each purifies the sorption and desorption process of carrying out that bed replaces, and during absorption, fluid enters purification bed, the CO in solid amine particle (2) fluid-absorbent in through hole aluminum foam (3)
2and produce heat, and heat passes to heat conduction partition (4) by through hole aluminum foam (3), until absorption reaches capacity, proceeds to desorption process, and during desorb, the heat purifying on bed absorption heat conduction partition (4) makes to have adsorbed CO
2solid amine particle under thermal vacuum condition, carry out desorb, until desorb completes, proceed to adsorption process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410360640.3A CN104107620A (en) | 2014-07-25 | 2014-07-25 | CO2 purifying structure of solid amine embedded metallic aluminum foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410360640.3A CN104107620A (en) | 2014-07-25 | 2014-07-25 | CO2 purifying structure of solid amine embedded metallic aluminum foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104107620A true CN104107620A (en) | 2014-10-22 |
Family
ID=51704727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410360640.3A Pending CN104107620A (en) | 2014-07-25 | 2014-07-25 | CO2 purifying structure of solid amine embedded metallic aluminum foam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104107620A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104474838A (en) * | 2014-11-10 | 2015-04-01 | 中国航天员科研训练中心 | Normal-temperature-state adsorption-desorption integrated reaction device |
| CN110180325A (en) * | 2019-07-10 | 2019-08-30 | 成都益志科技有限责任公司 | Pump type heat solid amine absorption CO2System |
| CN110191749A (en) * | 2016-11-23 | 2019-08-30 | 天空树公司 | The equipment and utilization method of the equipment from gas extraction carbon dioxide for carbon dioxide reversible adsorption including at least two layers of the stacking with adsorbent material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120006193A1 (en) * | 2010-07-09 | 2012-01-12 | Subir Roychoudhury | Adsorption-desorption apparatus and process |
| CN203379780U (en) * | 2013-07-03 | 2014-01-08 | 中煤科工集团重庆研究院 | Multi-tower type temperature swing adsorption concentration device of ventilation air marsh gas |
| CN103764255A (en) * | 2011-08-24 | 2014-04-30 | 康宁股份有限公司 | Thermally integrated adsorption-desorption systems and methods |
| JP2014188508A (en) * | 2013-03-28 | 2014-10-06 | Jfe Steel Corp | Gas separation method |
-
2014
- 2014-07-25 CN CN201410360640.3A patent/CN104107620A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120006193A1 (en) * | 2010-07-09 | 2012-01-12 | Subir Roychoudhury | Adsorption-desorption apparatus and process |
| CN103764255A (en) * | 2011-08-24 | 2014-04-30 | 康宁股份有限公司 | Thermally integrated adsorption-desorption systems and methods |
| JP2014188508A (en) * | 2013-03-28 | 2014-10-06 | Jfe Steel Corp | Gas separation method |
| CN203379780U (en) * | 2013-07-03 | 2014-01-08 | 中煤科工集团重庆研究院 | Multi-tower type temperature swing adsorption concentration device of ventilation air marsh gas |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104474838A (en) * | 2014-11-10 | 2015-04-01 | 中国航天员科研训练中心 | Normal-temperature-state adsorption-desorption integrated reaction device |
| CN110191749A (en) * | 2016-11-23 | 2019-08-30 | 天空树公司 | The equipment and utilization method of the equipment from gas extraction carbon dioxide for carbon dioxide reversible adsorption including at least two layers of the stacking with adsorbent material |
| CN110180325A (en) * | 2019-07-10 | 2019-08-30 | 成都益志科技有限责任公司 | Pump type heat solid amine absorption CO2System |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Yan et al. | Green synthesis of nanosilica from coal fly ash and its stabilizing effect on CaO sorbents for CO2 capture | |
| Florin et al. | Synthetic CaO-based sorbent for CO2 capture from large-point sources | |
| JP6695803B2 (en) | Hybrid adsorption device Heat exchange device manufacturing method | |
| Yan et al. | Performance of coal fly ash stabilized, CaO-based sorbents under different carbonation–calcination conditions | |
| KR102033745B1 (en) | Apparatus and process for capturing of carbon dioxide | |
| US8052784B2 (en) | Hydrogen storage and release system | |
| Guo et al. | A highly efficient and stable composite of polyacrylate and metal–organic framework prepared by interface engineering for direct air capture | |
| CN104107620A (en) | CO2 purifying structure of solid amine embedded metallic aluminum foam | |
| CN102580679A (en) | Method for preparing modified microwave activated carbon sorbent | |
| Hua et al. | Review of salt hydrates-based thermochemical adsorption thermal storage technologies | |
| CN104907045A (en) | Efficient carbon dioxide catching material | |
| Chen et al. | Study of the scale-up effect on the water sorption performance of MOF materials | |
| Du et al. | A novel and green CO2 adsorbent developed with high adsorption properties in a coal mine refuge chamber | |
| CN104014223B (en) | Ventilation air methane adsorber | |
| Sadek et al. | Solar-powered adsorption-based atmospheric water harvesting systems: Principles, materials, performance analysis, and configurations | |
| Sidhareddy et al. | Comprehensive review on adsorption cooling systems and its regeneration methods using solar, ultrasound, and microwave energy | |
| Wei et al. | Scalable production of EP/CaCl2@ C multistage core–shell sorbent for solar-driven sorption heat storage application | |
| Yang et al. | Salt hydrate adsorption material-based thermochemical energy storage for space heating application: A review | |
| CN104148036A (en) | Metal foam carrier CO2 adsorbent | |
| CN104492370A (en) | Modified montmorillonite carbon dioxide adsorption material and preparation method thereof | |
| KR100771230B1 (en) | Ceramic fiber supporter with carbon dioxide sorbent, reforming catalyst and manufacturing method thereof | |
| Hossain et al. | Recent progress of geopolymers for carbon dioxide capture, storage and conversion | |
| Zhang et al. | Recent advances in porous adsorbent assisted atmospheric water harvesting: a review of adsorbent materials | |
| CN208839603U (en) | A kind of powder adsorption material heating precipitation device | |
| CN105817198A (en) | Method for preparing high-stability calcium oxide-based adsorbent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141022 |