CN107854990A - A kind of preparation and its application of flyash substrate chemistry carbon sequestration post - Google Patents
A kind of preparation and its application of flyash substrate chemistry carbon sequestration post Download PDFInfo
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- CN107854990A CN107854990A CN201711032071.XA CN201711032071A CN107854990A CN 107854990 A CN107854990 A CN 107854990A CN 201711032071 A CN201711032071 A CN 201711032071A CN 107854990 A CN107854990 A CN 107854990A
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- carbon sequestration
- post
- flyash
- preparation
- monoethanolamine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
Abstract
The invention discloses a kind of preparation and its application of flyash substrate chemistry carbon sequestration post, the preparation method of the chemical carbon sequestration post is：The flyash substrate for weighing certain mass is poured into beaker, then the ethanolamine solutions of certain volume are poured into beaker, is uniformly mixing to obtain solidliquid mixture；Then the solidliquid mixture of flyash and monoethanolamine is filled into U-shaped glass tube, that is, flyash substrate chemistry carbon sequestration post is made.The preparation parameter of chemical carbon sequestration post is that flyash particle diameter is 0.25 mm（65 mesh）, U-tube internal diameter be 13 mm, the concentration of monoethanolamine is 75%, flyash substrate load monoethanolamine load capacity be 0.75 mL/g.The chemical carbon sequestration post prepared according to parameter made above, can fix CO2Saturated capacity up to 1.39 g, can be applied to fix CO in air, waste gas2。
Description
Technical field
The present invention relates to field of environment engineering technology, and in particular to a kind of preparation of flyash substrate chemistry carbon sequestration post and its
Using.
Background technology
Carbon dioxide in air（CO2）The increase of concentration, global average temperature will be caused to raise, sea level rise, desert
Area expands, species extinction.CO2This environmental problem of global warming is just threaten the life of the mankind caused by isothermal chamber gas
Deposit, control or slow down CO in air2The growth of concentration, it is to put arduous to the world and urgent task.
Chemical carbon sequestration refers to use chemical method by CO in waste gas or air2It is fixed, or even be converted into commercial Application
The raw material of value.Such as utilize CO2Prepare the production of the common industrials such as urea, methanol, inorganic carbonate, organic carbon hydrochlorate, salicylic acid
Product, about 120 Mt CO can be consumed every year2.In recent years, new chemical carbon sequestration reaction is constantly proposed by scientific workers, such as by life
Into product classification, it has been found that CO2It can be converted into：Carboxylic acid, carboxylate, carboxylic acid lactone, organic carbonate, organic carbamic acid
Ester, ureas etc. have the compound of industrial application value.If using the method for cheap and simple by air or waste gas
CO2Fixed concentration, the CO that concentration is higher in waste gas or air is provided for above-mentioned chemical carbon sequestration reaction2Raw material, it will push away
The industrial applications paces of dynamic above-mentioned chemical carbon sequestration reaction.
The content of the invention
The purpose of the present invention is in view of the shortcomings of the prior art, and to provide a kind of preparation of flyash substrate chemistry carbon sequestration post
And its application.The chemical carbon sequestration post is using industrial solid wastes flyash as matrix, with CO2Absorbent monoethanolamine is necessarily to compare
Example, which is mixed with, to be formed, and studies its carbon sequestration effect.To provide it is a kind of with industrial chemistry application prospect, can consolidate with chemistry
Carbon reacts the new technology of use in conjunction.
Realizing the technical scheme of the object of the invention is：
A kind of preparation method of flyash substrate chemistry carbon sequestration post, comprises the following steps：
The flyash substrate for weighing certain mass is poured into beaker, then the ethanolamine solutions of certain volume are poured into beaker, stirring
Uniformly obtain solidliquid mixture；
Then the solidliquid mixture of flyash and monoethanolamine is filled into U-shaped glass tube, with glass bar be compacted packing material, two
End plug mineral wool is fixed, that is, flyash substrate chemistry carbon sequestration post is made.
The particle diameter of the flyash substrate is 0.25 mm（65 mesh）, U-shaped glass bore be 13 mm, the concentration of monoethanolamine
The load capacity that monoethanolamine is loaded for 75%, flyash substrate is 0.75 mL/g.
The flyash substrate is prior art.
It the experiment proved that：The flyash substrate chemistry carbon sequestration post prepared using the inventive method can fix CO2Saturation hold
Amount can be applied to fix CO in air, waste gas up to 1.39 g2。
Compared with prior art, the preparation method of the chemical carbon sequestration post of the present invention is simple to operate, cost is cheap, can use online
It is and environment-friendly.Obtained carbon sequestration post can fix CO2Saturated capacity up to 1.39 g, can be applied to fix CO in air, waste gas2。
Brief description of the drawings
Fig. 1 is embodiment comparative resistance factor detection device schematic diagram；
Fig. 2 is embodiment carbon sequestration efficiency experimental provision schematic diagram；
In figure, the gas sampling bag of 1. 3. spinner flowmeter of chemical 2. drying tube of carbon sequestration post, 4. vavuum pump 5..
Fig. 3 is the saturated capacity and fly ash grain diameter that embodiment unit mass flyash can adhere to ethanolamine solutions
Relation schematic diagram.
Fig. 4 is the relation schematic diagram of embodiment carbon sequestration column resistance coefficient and fly ash grain diameter.
Fig. 5 is influence of the embodiment ethanolamine concentration to resistance coefficient.
Fig. 6 is embodiment lower chemical carbon sequestration post different in flow rate to CO in air2Carbon sequestration efficiency schematic diagram.
Fig. 7 is CO in the monoethanolamine carbon sequestration post continuous absorption air of embodiment 75%2Situation schematic diagram；
In figure, a is CO in air2Concentration b is CO in sampler bag2Concentration.
Embodiment
Present invention is further described below by embodiment and accompanying drawing, but is not limitation of the invention.
Embodiment
Prepare the chemical carbon sequestration post of flyash substrate：
1.1 main raw material(s)s and instrument
Flyash；The mm of wall thickness 1.5, internal diameter are 7 mm, 10 mm, 13 mm U-shaped quartz glass tube；1 L gas sampling bags（On
Hai Shenyuan scientific instrument Co., Ltd）；FD-97 oil-free air compressors（Science and Educational INstrument Factory, Fudan Univ）；JSA8-CO2It is portable
Formula carbon dioxide detector（Ji Daan Science and Technology Ltd.s of Shenzhen）：Detection range is 0-2000 ppm, resolution ratio 1
ppm。
The preparation of 1.2 chemical carbon sequestration posts and determination method for parameter
For cinder after being burnt using coal briquette as raw material, the flyash with mortar grinder into 10,24,50,65,80,100 mesh is stand-by.Claim
Take the flyash substrate of certain mass to pour into beaker, then the ethanolamine solutions of certain volume are poured into beaker, uniform stirring.So
Flyash monoethanolamine solidliquid mixture is filled into U-shaped glass tube afterwards, two end plug mineral wools of U-tube.
The preparation parameter of chemical carbon sequestration post includes the load of the particle diameter of flyash, the internal diameter of U-shaped glass tube, ethanolamine solutions
Amount and concentration.Technique is mainly determined as main object of investigating using the comparative resistance coefficient of chemical carbon sequestration post and the monoethanolamine amount of load
Ginseng, resistance coefficient determine as shown in Figure 1.As shown in Figure 1, vavuum pump, spinner flowmeter and drying bottle are connected（Inside fill out blue silicon
Glue）, vavuum pump is opened, adjusts spinner flowmeter, fixed flow rate isν 1 ；Then chemical carbon sequestration post is connected, due to carbon sequestration column resistance
Effect, now meter readings may be reduced, and meter readings are read after stable readingν 2 ；Chemical carbon sequestration post comparative resistance
Coefficient presses formula（1）Calculate.Comparative resistance coefficient is bigger, illustrates that chemical carbon sequestration column resistance is bigger, on the contrary then resistance is smaller.
（1）
In formula：V 1： Connect meter readings before chemical carbon sequestration post；V 2 ：Connect meter readings after chemical carbon sequestration post.
The experimental method of the 1.3 chemical carbon sequestration post carbon sequestration efficiency prepared
1.3.1 carbon sequestration efficiency experimental provision
As shown in Figure 2, air blower is used（Or inflator pump）Etc. the equipment of malleation can be provided by air（Or waste gas）Roused with certain flow rate
Enter chemical carbon sequestration post, drying tube is connected after chemical carbon sequestration post and gas sampling bag collection is absorbed CO2Gas.Using
JSA8-CO2Portable carbon dioxide detector determines air（Or waste gas）With the CO in sampler bag2Concentration, carbon sequestration efficiency press formula
（2）Calculate,
（2）
In formula：Air（Or waste gas）In CO2Concentration refers to the CO in air before post2Concentration；
CO in sampler bag2Concentration refers to the CO in air after post2Concentration.
2. interpretation of result
2.1 chemical carbon sequestration post preparation technology parameters
2.1.1 the determination of fly ash grain diameter
In theory, fly ash grain diameter is smaller, and specific surface area is bigger, and the ethanolamine solutions that can adhere to are more, and carbon sequestration capacity is got over
By force.In order to determine the amount of ethanolamine solutions that the flyash of different-grain diameter can adhere to, 10 mesh (2 mm), 24 mesh are weighed respectively
(0.85 mm), 50 mesh (0.355mm), 65 mesh (0.25mm), 80 mesh (0.18mm), the flyash 8g of 100 mesh (0.15 mm)
In beaker, 50% ethanolamine solutions are added dropwise thereto, observe while stirring, when observation walls of beaker has free drop
When, stop instilling ethanolamine solutions immediately.It is unit mass with the ethanolamine solutions cumulative volume divided by flyash quality of instillation
Flyash can adhere to the saturated capacity of ethanolamine solutions, the relation of saturated capacity and fly ash grain diameter as shown in Figure 3, Fig. 3
Show, when particle diameter is reduced to 0.25 mm from 2 mm, fly ash grain diameter is smaller, and unit mass flyash can adhere to
Ethanolamine solutions saturated capacity it is bigger, when particle diameter changes in the range of 0.25 mm to 0.15 mm, can adhere to
The saturated capacity of monoethanolamine keeps constant, is 0.75 mL/g.
However, when fly ash grain diameter is smaller, populated pillar resistance can undoubtedly increase, and resistance is excessive, unfavorable
Operated in follow-up carbon sequestration.Therefore, the saturated capacity for the ethanolamine solutions that the selection of fly ash grain diameter can adhere to except consideration
Outside, the resistance coefficient of pillar is also key factor.Therefore, respectively by each particle diameter Powder ash adsorption ethanolamine solutions to saturation, if
It is 1600 mL/min to determine initial flow rate, and the method for putting as described in 1.2 prepares chemical carbon sequestration post and determines the resistance coefficient of each pillar,
The relation of each carbon sequestration column resistance coefficient and fly ash grain diameter is as shown in Figure 4, it is seen then that as theory deduction result, with
The reduction of fly ash grain diameter is filled, resistance coefficient gradually increases, but little in the particle size range internal resistance force coefficient of experiment,
Respectively less than 0.3.The saturated capacity and resistance coefficient of ethanolamine solutions can be adhered to by considering, and following experimental selection particle diameter is
0.25 mm（65 mesh）Flyash be matrix.
2.1.2 the influence of ethanolamine concentration
Change ethanolamine concentration in solution, be well mixed, fill into U-tube with 65 mesh flyash respectively, control packed height
It is identical, influence of the ethanolamine concentration to carbon sequestration column resistance coefficient is investigated, while observe phenomenon.Resistance coefficient and ethanolamine concentration
Relation is shown in that Fig. 5, Fig. 5 show, as ethanolamine concentration from 0 increases to 50%, drastically downward trend is presented in resistance coefficient, works as ethanol
Amine concentration from 50% increase to 100% when, resistance coefficient is in minimum platform, about 0.2.List is from the point of view of resistance coefficient, monoethanolamine
Any concentration in the range of 50%-100% may be selected in concentration, but is found in experimentation, when using 100% monoethanolamine and flyash
When point being mixed with carbon sequestration post, because the excessive liquid of liquid viscosity is difficult to be uniformly adhered to fine coal gray surface, and 50% and 75%
Ethanolamine solutions can be evenly affixed to fine coal gray surface.It is bigger in view of the more big possible carbon sequestration capacity of ethanolamine concentration, because
This, the ethanolamine solutions and 65 mesh flyash for intending selection 75% are mixed with carbon sequestration column packing.
Influence of 2.2 air velocitys to carbon sequestration post carbon sequestration efficiency
Chemical carbon sequestration post is prepared according to 1.2 methods and 2.1 optimum parameters, by 1.3.1 methods, in 0.32-1.6 L/min
In the range of change air velocity, investigate under different air velocitys chemical carbon sequestration post to CO in air2Carbon sequestration efficiency.Experiment is worked as
My god, CO in Laboratory Air2Concentration is 405 ppm, and lower chemical carbon sequestration post different in flow rate is to CO in air2Carbon sequestration efficiency such as
Shown in Fig. 6.Fig. 6 shows, in the range of 0.32-1.6 L/min, air velocity does not influence on carbon sequestration efficiency.During in order to save
Between, following experiment control air（Or waste gas）Flow velocity be 1.6 L/min.
The carbon sequestration efficiency of 2.3 different ethanolamine concentration carbon sequestration posts
Ethanolamine solutions are replaced with the water of same volume, i.e. 0% ethanolamine solutions have investigated 50% and 75% monoethanolamine as control
The carbon sequestration efficiency of chemical carbon sequestration post, as a result as shown in table 1.Control also has certain carbon sequestration efficiency, is because of the porous of flyash
Structure is to CO2Physical absorption and water to CO2Absorb reason.From the point of view of carbon sequestration efficiency, 50% and 75% monoethanolamine chemistry carbon sequestration post
Carbon sequestration efficiency it is essentially identical, illustrate instantaneous CO absorption2Ability, both do not have difference.
The carbon sequestration efficiency of the different ethanolamine concentration carbon sequestration posts of table 1
The carbon sequestration capacity of 2.4 75% monoethanolamine carbon sequestration posts
The chemical carbon sequestration post of connection as shown in 1.3.1 Fig. 1, sets the L/min of air velocity 1.6, system continuously works, every 30min
A sample is gathered after post determine CO therein with sampler bag2Concentration, meanwhile, determine CO in air2Concentration, as a result see Fig. 7.Fig. 7
Show, when within by the L of total volume of air 4600, the CO in sampler bag2Concentration can be stablized in 260ppm, i.e. carbon sequestration
The carbon sequestration efficiency of post keeps constant.When reaching 5900 L by volume of air, CO in sampler bag and air2It is identical, i.e., now
Chemical carbon sequestration post CO absorption2Reach saturation.The area that a in Fig. 7, b curve are included with Y-axis is saturated extent of adsorption, is used
It is 709190 μ L that MATLAB Software Integrations, which obtain area,（Under the status of criterion）CO2, i.e. the CO of the chemical carbon sequestration post2Carbon sequestration capacity
For 1.39 g.
2.5 carbon sequestration posts are to CO in simulated exhaust2Carbon sequestration effect
Using pure CO in steel cylinder2The simulated exhaust of 4 various concentrations as shown in table 2 is prepared with air, the simulated exhaust is led to
Cross chemical carbon sequestration post, CO in gas after measuring column2Concentration, and carbon sequestration efficiency is calculated, it is listed in Table 2 below.The as shown by data of table 2, chemistry
Carbon sequestration post is to the simulated exhaust that concentration is 1639-1771ppm, and carbon sequestration efficiency is 79.73-81.03%, higher than to CO in air2's
Carbon sequestration efficiency, illustrate CO in gas phase2Be advantageous to the CO in the monoethanolamine absorption gas phase of fly ash loading when higher2.It can be seen that chemistry
Carbon sequestration post is in CO2There is preferable application prospect in the higher waste gas of concentration.
Carbon sequestration effect of the carbon sequestration post of table 2 to simulated exhaust
。
Claims (4)
- A kind of 1. preparation method of flyash substrate chemistry carbon sequestration post, it is characterised in that：Comprise the following steps：The flyash substrate for weighing certain mass is poured into beaker, then the ethanolamine solutions of certain volume are poured into beaker, stirring Uniformly obtain solidliquid mixture；Then the solidliquid mixture of flyash and monoethanolamine is filled into U-shaped glass tube, that is, it is solid that flyash substrate chemistry is made Carbon post.
- 2. the preparation method of flyash substrate chemistry carbon sequestration post according to claim 1, it is characterised in that：The flyash The particle diameter of matrix is 0.25 mm, U-tube internal diameter is 13 mm, the concentration of monoethanolamine is 75%, flyash substrate load monoethanolamine Load capacity is 0.75 mL/g.
- 3. the flyash substrate chemistry carbon sequestration post made from the preparation method described in one of claim 1-2.
- 4. the application of flyash substrate chemistry carbon sequestration post described in claim 3, it is characterised in that：The chemical carbon sequestration post can be fixed CO2Saturated capacity up to 1.39 g, can be applied to fix CO in air, waste gas2。
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219330A (en) * | 2007-09-14 | 2008-07-16 | 东南大学 | Method and device for fixing CO2 in stack gas by solid castoff carbonatation |
| CN101862585A (en) * | 2010-06-28 | 2010-10-20 | 临邑泰亨新材料有限公司 | Technology for absorbing and producing carbon dioxide by alcohol amine method |
| CN102019166A (en) * | 2010-12-11 | 2011-04-20 | 上海纳米技术及应用国家工程研究中心有限公司 | Method for preparing modified attapulgite clay adsorbing material |
| CN102614832A (en) * | 2012-03-23 | 2012-08-01 | 中国地质大学（武汉） | Halloysite carbon dioxide adsorbent and preparation method thereof |
| PL396143A1 (en) * | 2011-08-31 | 2013-03-04 | Politechnika Czestochowska | Method for obtaining CO2 sorbents from fly ash |
| US8545781B1 (en) * | 2012-10-08 | 2013-10-01 | King Fahd University Of Petroleum And Minerals | Carbon dioxide adsorbent composition |
| CN105817197A (en) * | 2016-03-14 | 2016-08-03 | 东北大学 | Preparation method of fly ash based adsorbent for efficiently separating CO2 |
-
2017
- 2017-10-29 CN CN201711032071.XA patent/CN107854990A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219330A (en) * | 2007-09-14 | 2008-07-16 | 东南大学 | Method and device for fixing CO2 in stack gas by solid castoff carbonatation |
| CN101862585A (en) * | 2010-06-28 | 2010-10-20 | 临邑泰亨新材料有限公司 | Technology for absorbing and producing carbon dioxide by alcohol amine method |
| CN102019166A (en) * | 2010-12-11 | 2011-04-20 | 上海纳米技术及应用国家工程研究中心有限公司 | Method for preparing modified attapulgite clay adsorbing material |
| PL396143A1 (en) * | 2011-08-31 | 2013-03-04 | Politechnika Czestochowska | Method for obtaining CO2 sorbents from fly ash |
| CN102614832A (en) * | 2012-03-23 | 2012-08-01 | 中国地质大学（武汉） | Halloysite carbon dioxide adsorbent and preparation method thereof |
| US8545781B1 (en) * | 2012-10-08 | 2013-10-01 | King Fahd University Of Petroleum And Minerals | Carbon dioxide adsorbent composition |
| CN105817197A (en) * | 2016-03-14 | 2016-08-03 | 东北大学 | Preparation method of fly ash based adsorbent for efficiently separating CO2 |
Non-Patent Citations (2)
| Title |
|---|
| PAWEL BARAN ET AL.: ""CO2 adsorption properties of char produced from brown coal impregnated with alcohol amine solutions"", 《ENVIRON MONIT ASSESS》 * |
| 陈彦广等: ""粉煤灰作为廉价吸附剂控制污染物排放的研究进展"", 《化工进展》 * |
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