CN107552013A - A kind of preparation and its application of bagasse cellulose matrix chemistry carbon sequestration post - Google Patents
A kind of preparation and its application of bagasse cellulose matrix chemistry carbon sequestration post Download PDFInfo
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- CN107552013A CN107552013A CN201711028906.4A CN201711028906A CN107552013A CN 107552013 A CN107552013 A CN 107552013A CN 201711028906 A CN201711028906 A CN 201711028906A CN 107552013 A CN107552013 A CN 107552013A
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- carbon sequestration
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Abstract
The invention discloses a kind of preparation and its application of bagasse cellulose matrix chemistry carbon sequestration post, the preparation method of the chemical carbon sequestration post is：Certain mass m bagasse cellulose is weighed into beaker, instill ethanolamine solutions, while drop while stir, when observe occur free drop in walls of beaker when, that is, think bagasse cellulose load saturation ethanolamine solutions, record the ethanolamine solutions cumulative volume v of instillation；Bagasse cellulose and ethanolamine solutions are pressed into m:V mass volume ratios, which are mixed evenly, produces packing material, and packing material is filled into U-shaped glass tube, is compacted packing material with glass bar, two end plug mineral wools are fixed, and produce bagasse cellulose chemistry carbon sequestration post.The U-shaped glass tube using a diameter of 13mm is determined by experiment as pillar, filling 5g loads the bagasse cellulose of 75% ethanolamine solutions, fixed CO2Saturated capacity up to 0.46 g, the chemical carbon sequestration post is applied to CO in fixed air, waste gas2When, the CO in air or waste gas can be made2It is reduced to 300 ppm.
Description
Technical field
The present invention relates to field of environment engineering technology, and in particular to a kind of preparation of bagasse cellulose matrix chemistry carbon sequestration post
And its application.
Background technology
Since human industry's revolution period, carbon dioxide in air（CO2）Sustainable growth trend is presented in concentration, from work
270 ppm before industry revolution increase 385 ppm of today, IPCC（International Panel on Climate
Change）Prediction, by 2100, CO in air2Concentration will increase to 570 ppm, and global average temperature will be caused to raise 1.9 DEG C,
Sea level rise 1 m, desert area expansion, most species extinctions.Because of CO2Global warming caused by isothermal chamber gas this
Environmental problem is just threaten the existence of the mankind, controls or slows down CO in air2The growth of concentration, it is to put arduousness to the world
And urgent task.
Control or slow down CO in air2The growth of concentration, nothing more than two kinds of approach, first, reducing CO2Discharge；Two
It is to take the CO in various means absorption airs2, i.e. carbon sequestration.So-called carbon sequestration is also carbon sequestration, refers to increase in addition to air
The measure of carbon content in carbon storehouse, mainly include biological sequestration, physics carbon sequestration and chemical carbon sequestration at present.Chemical carbon sequestration refers to use
Chemical method is by CO in waste gas or air2It is fixed up, and tries every possible means fixed CO2It is converted into useful industrial raw materials.
The content of the invention
It is an object of the invention to provide a kind of preparation and its application of bagasse cellulose matrix chemistry carbon sequestration post.The chemistry
Carbon sequestration post is using bagasse cellulose as matrix, with CO2Absorbent monoethanolamine is mixed with certain proportion, is prepared carbon sequestration and is worked well
Chemical carbon sequestration post.
Realizing the technical scheme of the object of the invention is：
A kind of preparation method of bagasse cellulose matrix chemistry carbon sequestration post, comprises the following steps：
Certain mass m bagasse cellulose is weighed into beaker, instills ethanolamine solutions, is stirred in drop, when observing beaker
When occurring free drop on wall, i.e., load saturation ethanolamine solutions, the ethanolamine solutions for recording instillation are total for bagasse cellulose
Volume v；
Bagasse cellulose and ethanolamine solutions are pressed into m:V mass volume ratios, which are mixed evenly, produces packing material, will fill material
Material filling is compacted packing material into U-shaped glass tube, with glass bar, and two end plug mineral wools are fixed, that is, bagasse cellulose is made
Learn carbon sequestration post.
The U-shaped glass bore is 13 mm, the concentration of monoethanolamine is 75%.
The bagasse cellulose matrix is prior art.
Compared with prior art, the preparation method of the chemical carbon sequestration post of the present invention is simple to operate, cost is cheap and environment-friendly.
It the experiment proved that：Using a diameter of 13mm U-shaped glass tube as pillar, the bagasse that filling 5g loads 75% ethanolamine solutions is fine
Dimension element, fixed CO2Saturated capacity up to 0.46 g, the chemical carbon sequestration post is applied to CO in fixed air, waste gas2When, sky can be made
CO in gas or waste gas2It is reduced to 300 ppm.
Brief description of the drawings
Fig. 1 is embodiment chemistry carbon sequestration post comparative resistance factor detection device schematic diagram；
Fig. 2 is embodiment chemistry carbon sequestration post 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 saturated absorption amount variation diagram of the embodiment bagasse cellulose to different concentration ethanol amine aqueous solution.
Fig. 4 is that embodiment fixes influence signal of the ethanolamine concentration to resistance coefficient in the case of bagasse cellulose quality
Figure.
Fig. 5 is that embodiment fixes influence of the ethanolamine concentration to resistance coefficient in the case of bagasse cellulose packed height
Schematic diagram.
Fig. 6 is the carbon sequestration efficiency schematic diagram of embodiment lower chemical carbon sequestration post different in flow rate.
Fig. 7 is the carbon sequestration efficiency schematic diagram for the chemical carbon sequestration post that embodiment loads different concentration ethanol amine aqueous solution.
Fig. 8 is embodiment chemistry carbon sequestration post running hours, CO in air before and after post2Concentration is with being passed through volume of gas
Relation schematic diagram.
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 bagasse cellulose matrix：
1.1 main raw material(s)s and instrument
Bagasse cellulose（" Liang Ying, Li Maoyong, Wu Chancui, Li Xuejun propyl group amine key close the preparation of bagasse and its right to reference literature
Cd2+Absorption property Environmental science and technologies 2014,37 (2):34-37,43. " prepare）；The mm internal diameters of wall thickness 1.5 are 7
Mm, 10 mm, 13 mm U-shaped quartz glass tube；1 L gas sampling bags（Shanghai Shen Yuan scientific instrument Co., Ltd）；FD-97 without
Oily air compressor（Science and Educational INstrument Factory, Fudan Univ）；JSA8-CO2Portable carbon dioxide detector（Shenzhen Ji Daanke
Skill Co., Ltd）：Detection range is 0-2000 ppm, and resolution ratio is 1 ppm.
The preparation method of 1.2 chemical carbon sequestration posts
Weigh certain mass（m）Bagasse cellulose into beaker, instill ethanolamine solutions, while drop while stir, when observe burning
When occurring free drop on wall of cup, that is, think bagasse cellulose load saturation ethanolamine solutions, record the monoethanolamine of instillation
Overall solution volume v.When preparing chemical carbon sequestration post, bagasse cellulose and ethanolamine solutions are pressed into m:V mass volume ratios mix
Packing material uniformly is produced, packing material is filled into U-shaped glass tube, packing material, two end plug glass are compacted with glass bar
Cotton is fixed, and produces bagasse cellulose chemistry carbon sequestration post.
1.3 chemical carbon sequestration post comparative resistance coefficient determination methods
The resistance of chemical carbon sequestration post is to influence its important parameter used, therefore, determining the phase of chemical carbon sequestration post as follows
To resistance coefficient.As shown in Figure 1, vavuum pump, spinner flowmeter and drying bottle are connected（Inside fill out blue silica gel）, vavuum pump is opened,
Spinner flowmeter is adjusted, fixed flow rate isν 1 ；Then chemical carbon sequestration post is connected, because carbon sequestration column resistance acts on, now flowmeter
Reading may be reduced, and meter readings are read after stable readingν 2 ；Chemical carbon sequestration column resistance coefficient presses formula（1）Calculate.Phase
It is bigger to resistance coefficient, illustrate that chemical carbon sequestration column resistance is bigger, it is 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.
1.4 carbon sequestration efficiency experimental provisions
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）Middle CO2Concentration refers to before post CO in air2Concentration；
CO in sampler bag2Concentration refers to after post CO in air2Concentration.
2. interpretation of result
The determination of 2.1 bagasse cellulose matrix chemistry carbon sequestration post technological parameters
Influence carbon sequestration post using an important factor for be carbon sequestration post drag size, therefore, using carbon sequestration post comparative resistance coefficient to comment
Valency parameter, the factors such as the concentration of cellulose and the solid-to-liquid ratio of monoethanolamine, the caliber of chemical carbon sequestration post and monoethanolamine are investigated to carbon sequestration
The influence of column resistance, bagasse cellulose chemistry carbon sequestration post technological parameter is prepared so as to obtain.
2.1.1 the solid-to-liquid ratio of cellulose and monoethanolamine
Observed by experimental phenomena, when cellulose is mixed for more than a certain amount of ethanolamine solutions, exceeded the absorption of cellulose
Ability, just have free ethanolamine solutions and appear in pillar.When gas by after, because free fluid occupies gas stream
Logical hole so that the resistance of carbon sequestration post is excessive, causes the filler appearance point of carbon sequestration post to cut, mobile phenomenon, gas can not be smooth
Pass through carbon sequestration post.Reach the effect of optimal processing carbon dioxide and reduce resistance as far as possible, it should find out cellulose to second
The saturated absorption amount of hydramine.This research is thought when a certain amount of cellulose adds the monoethanolamine of certain volume, after being sufficiently mixed
U-tube is inserted, the tube wall of U-tube occurs without liquid just after compacting, and mixed proportion as explanation is exactly cellulose just
Saturated absorption amount.It is thick liquid in view of monoethanolamine, cellulose may be caused to load the saturation of different concentration ethanol amine
Amount has differences.Therefore, using single factor test control variate method, fixed bagasse cellulose dosage is 2 g, and ethanolamine concentration is arranged to
0%th, 25%, 50%, 75%, 100%, experiment draws saturated absorption amount of the cellulose to the monoethanolamine of various concentrations, as a result sees Fig. 3.Figure
3 show, saturated absorption amount of the bagasse cellulose to different concentration ethanol amine is different, and ethanolamine concentration is higher, the saturation of cellulose
Uptake is smaller.
2.1.2 the influence of caliber and ethanolamine concentration to carbon sequestration column resistance coefficient
Selection internal diameter is 7 mm, 10 mm, 13 mm U-shaped quartz glass tube, respectively the sugarcane of filling load ethanolamine solutions saturation
Slag cellulose prepares chemical carbon sequestration post, and the comparative resistance coefficient of each chemical carbon sequestration post is determined according to 1.3 methods, and it is dense to investigate monoethanolamine
Degree is to chemical carbon sequestration column resistance index impacts.When the bagasse cellulose quality of fixed filling is 2 g, experimental result is obtained as schemed
Shown in 4；When fixed carbon sequestration post packed height is identical, it is as shown in Figure 5 to obtain experimental result.Test result indicates that two kinds of situations
Under, be 13 mm Large Diameter Pipeline chemistry carbon sequestration posts resistance coefficient it is minimum, 7 mm pipe with small pipe diameter chemistry carbon sequestration column resistances coefficients are maximum,
And Large Diameter Pipeline U-tube, the carbon sequestration filler that can undoubtedly fill is more, and potential carbon sequestration capacity is big, therefore following experimental selection internal diameter is
The U-shaped quartz glass tube of 13 mm Large Diameter Pipelines carries out experiment.Fig. 4 and Fig. 5 results illustrate that 13 mm Large Diameter Pipeline chemistry carbon sequestration posts are in difference
Under ethanolamine concentration, resistance coefficient is more or less the same, and therefore, the selection of bagasse cellulose ethanolamine concentration is by follow-up carbon sequestration efficiency
To determine.
The carbon sequestration efficiency of 2.2 chemical carbon sequestration posts at different conditions
2.2.1 influence of the gas with various flow velocity to chemical carbon sequestration post carbon sequestration efficiency
Fixed bagasse cellulose quality be 5 g, ethanolamine concentration 50%, by the chemical carbon sequestration of 1.2 methods, 13 mm internal diameters of preparation
Post.By 1.4 methods, using room air as carbon sequestration object, gas is investigated in the range of 400-1600 mL/min and crosses column flow rate to changing
The influence of carbon sequestration post carbon sequestration efficiency is learned, as a result sees Fig. 6.Fig. 6 shows that it is solid to chemistry to cross column flow rate for gas in the range of experimental flow rate
The carbon sequestration efficiency of carbon post is without influence, and in order to save test period, it is 1600 mL/min that following experiment control gas, which crosses column flow rate,.
2.2.2 the carbon sequestration efficiency of the chemical carbon sequestration post of different concentration ethanol amine aqueous solution is loaded
Cellulose is distinguished into load saturation 0%（Blank control）, 50%, 75%, 100% ethanolamine solutions, according to 2.2 method preparationizations
Carbon sequestration post is learned, then, by the carbon sequestration efficiency of 2.4 each carbon sequestration posts of measure, as a result sees Fig. 5.Meanwhile measure 100 mL concentration and be
Chemical carbon sequestration post of 50% ethanolamine solutions in conical flask in alternate figures 2, other conditions setting is identical, investigates 50% ethanol
Amine aqueous solution is to CO in room air2Carbon sequestration efficiency, be as a result 28.44%.
Fig. 7 shows that the carbon sequestration efficiency of blank chemistry carbon sequestration post is 7.21%, has certain carbon sequestration efficiency, because two
Carbonoxide is dissolved in water or caused by bagasse cellulose physical absorption.Load the chemical carbon sequestration post of 50% and 75% ethanolamine solutions
Average carbon sequestration efficiency is 34.34% and 34.50%, and both carbon sequestration efficiency are basically identical, load the chemical carbon sequestration post of 100% monoethanolamine
Average carbon sequestration efficiency is 28.90%, hence it is evident that less than the above two, because 100% monoethanolamine viscosity is larger, is mixed with cellulose
Afterwards, state is loose, and little particle clustering phenomena occurs in cellulose, causes the porosity of carbon sequestration filler to reduce, gas-solid contact not enough fills
Point.Compare the chemical carbon sequestration post of 50% ethanolamine solutions of load and the carbon sequestration efficiency of 50% ethanolamine solutions liquid, find 50% second
Alkanolamine solution loads the carbon sequestration efficiency for being prepared into chemical carbon sequestration post on cellulose（34.34%）Apparently higher than ethanolamine solutions liquid
The direct carbon sequestration efficiency of body（28.44%）, reason is probably that monoethanolamine is attached to cellulose surface, when gas passes through carbon sequestration post, by
In the high characteristic of cellulose porosity, specific surface area is big, is advantageous to CO2Gas and ethanolamine solutions haptoreaction, in addition, carbon sequestration
Post also add CO2With the time of contact of monoethanolamine, dual favorable factor improves the carbon sequestration efficiency of chemical carbon sequestration post.To sum up may be used
See, cellulose loads 50% and 75% ethanolamine solutions, can prepare the higher chemical carbon sequestration post of carbon sequestration efficiency, but load 75%
The chemical carbon sequestration column resistance coefficient of ethanolamine solutions is smaller（See Fig. 4 and Fig. 5）, while the larger ethanolamine solutions of concentration are considered,
Carbon sequestration capacity can increase, and therefore, test prepare chemical carbon sequestration post progress in fact with the ethanolamine solutions of cellulose load 75% below
Test.
The saturation carbon capacity of 2.3 chemical carbon sequestration posts
In order to determine the saturation carbon capacity of chemical carbon sequestration post, the chemical carbon sequestration post of connection as shown in 1.4 section Fig. 2, air velocity is set
1.6 L/min, system continuously work, and a sample is gathered after post every 30 min sampler bags determines CO therein2Concentration, together
When, determine CO in air2Concentration, as a result see Fig. 8.Fig. 8 shows, when passing through the L of total volume of air 1600（Under the status of criterion）Within
When, the CO in sampler bag2Concentration can be stablized to be kept constant in 300 ppm, i.e. the carbon sequestration efficiency of carbon sequestration post.When passing through air
Volume reaches 1800 L（Under the status of criterion）When, CO in sampler bag and air2It is identical, i.e. now chemical carbon sequestration post CO absorption2Reach
Saturation.The area that curve a and X and Y-axis are included in Fig. 6 is saturated extent of adsorption, and area is obtained using MATLAB Software Integrations
For 232150 μ L（Under the status of criterion）CO2, i.e. the CO of the chemical carbon sequestration post2Carbon sequestration capacity is 0.46 g.
The application of 2.4 chemical carbon sequestration posts
2.4.1 in higher concentration CO2Application in simulated exhaust
Using pure CO in steel cylinder24 CO as shown in table 1 are prepared with air2Simulation of the concentration in the range of 1200-1300ppm
Waste gas, by the simulated exhaust by chemical carbon sequestration post, CO in gas after measuring column2Concentration, and carbon sequestration efficiency is calculated, it is listed in table 1
In.The as shown by data of table 1, for chemical carbon sequestration post to 1200-1300 ppm simulated exhaust, carbon sequestration efficiency is 75.06-77.21%, bright
It is aobvious to be higher than chemical carbon sequestration post to CO in air2Carbon sequestration efficiency, illustrate CO in waste gas2Be advantageous to bagasse cellulose when concentration is higher
Load the CO in monoethanolamine absorption gas phase2。
Carbon sequestration effect of the carbon sequestration post of table 1 to simulated exhaust
2.4.2 in low concentration CO2Application in waste gas
Honeycomb briquette is discharged into waste gas into air in relatively closed Indoor Combustion, as CO in room air2Concentration measurement base
When originally tending towards stability, room air is blasted into chemical carbon sequestration post using air blower, chemical carbon sequestration post is determined to honeycomb by 2.4 methods
Coal combustion discharges the carbon sequestration efficiency of waste gas.Room air measurement result is 461.8 ± 0.5 ppm（n=4)）, through chemical carbon sequestration post
CO in post-sampling bag2Concentration is 300.5 ± 2.6 ppm（N=4), carbon sequestration efficiency is 34.92 ± 0.51%（n=4）.
Contrast chemical carbon sequestration post and fix air, honeycomb briquette burning waste gas and CO2Experiment in the higher simulated exhaust of concentration
As a result, CO in gas is found after the processing of chemical carbon sequestration post2Concentration is about the carbon dioxide in 300 ppm, with before processing gas
Concentration is unrelated, i.e., cellulose-monoethanolamine chemistry carbon sequestration post absorbs the CO in gas2, the CO in gas phase2Equilibrium concentration maintains 300
Ppm or so.Therefore, the only CO in gas to be processed2Concentration is higher than 300 ppm, chemical carbon sequestration post prepared by this research
Carbon sequestration, in certain scope, gas concentration lwevel is higher, and the carbon sequestration efficiency of chemical carbon sequestration post is higher, i.e., treatment effect is better.
Claims (4)
1. a kind of preparation method of bagasse cellulose matrix chemistry carbon sequestration post, it is characterised in that comprise the following steps：
Certain mass m bagasse cellulose is weighed into beaker, instills ethanolamine solutions, is stirred in drop, when observing beaker
When occurring free drop on wall, i.e., load saturation ethanolamine solutions, the ethanolamine solutions for recording instillation are total for bagasse cellulose
Volume v；
Bagasse cellulose and ethanolamine solutions are pressed into m:V mass volume ratios, which are mixed evenly, produces packing material, will fill material
Material filling is compacted packing material into U-shaped glass tube, with glass bar, and two end plug mineral wools are fixed, that is, bagasse cellulose is made
Learn carbon sequestration post.
2. the preparation method of bagasse cellulose matrix chemistry carbon sequestration post according to claim 1, it is characterised in that：The U
Type glass bore is 13 mm, the bagasse cellulose of filling 5g 75% ethanolamine solutions of load, fixed CO2Saturated capacity it is reachable
0.46 g。
3. the bagasse cellulose matrix chemistry carbon sequestration post made from the preparation method described in one of claim 1-2.
4. the application of bagasse cellulose matrix chemistry carbon sequestration post described in claim 3, it is characterised in that：The chemical carbon sequestration post should
For fixing CO in air, waste gas2When, the CO in air or waste gas can be made2It is reduced to 300 ppm.
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| US20100263534A1 (en) * | 2007-11-08 | 2010-10-21 | The University Of Akron | Amine absorber for carbon dioxide capture and processes for making and using the same |
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