CN117686689A - Basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation - Google Patents
Basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation Download PDFInfo
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- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 8
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- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
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- 230000008569 process Effects 0.000 abstract description 12
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 19
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- 229910021645 metal ion Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052599 brucite Inorganic materials 0.000 description 2
- 229910001748 carbonate mineral Inorganic materials 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
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- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- 229910021532 Calcite Inorganic materials 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical class [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
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- 229910001424 calcium ion Inorganic materials 0.000 description 1
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- -1 carbonium ion Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
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- RAQDACVRFCEPDA-UHFFFAOYSA-L ferrous carbonate Chemical compound [Fe+2].[O-]C([O-])=O RAQDACVRFCEPDA-UHFFFAOYSA-L 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
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Abstract
The invention belongs to CO 2 The technical field of geological sequestration, in particular to a basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation, which aims to solve the problems of inaccurate measurement and larger actual value of basalt carbon sequestration efficiency in the prior art. The invention comprises the following steps: CO calculated based on all basalt effective reactive ions 2 Theoretical carbon sequestration potential and CO immobilized in basalt in the form of secondary carbonate rock 2 The mass percentage is used for obtaining the actual carbon fixation potential of basalt; by rapid CO 2 The water-rock reaction obtains a pressure drop curve, and integrates to obtain fast CO 2 Consumption of CO in water rock reactions 2 Is a measure of (2); and combining the basalt carbon sequestration potential to calculate basalt carbon sequestration efficiency. The method accurately determines the content of the reactive ions in the basalt and deducts the CO existing in the form of carbonate rock 2 The basalt carbon sequestration potential evaluation is more accurate, and scientific basalt-containing structure is arrangedCO 2 The water rock reaction method and process have higher accuracy in measurement of the basalt carbon fixation rate and the basalt carbon fixation efficiency.
Description
Technical Field
The invention belongs to CO 2 The technical field of geological sequestration, in particular to a basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation.
Background
Basalt CO 2 Mineralization sequestration technology as a relatively hot CO in recent years 2 Geological sequestration technology for controlling CO in air 2 Climate change caused by the increase of the content plays a key role, and mineralizes and seals CO for basalt 2 The accurate assessment of carbon sequestration efficiency of basalt is always a difficult problem, and the root cause is that the prior art fails to clearly recognize the effective components of basalt capable of sequestration before and after reaction and the more accurate processing and analysis methods before and after reaction. Foreign scholars Gadikota pre-reaction treatment and post-reaction analysis of basalt particles for mineralization and CO sequestration of basalt 2 Has been studied, and a set of basalt sample preparation flow and particle screening scheme [1 ] is established]Analyzing effective carbon fixation ions and maximum carbon fixation potential of basalt, and evaluating mineralized CO in the basalt after reaction by utilizing a thermogravimetric analyzer 2 Is contained in the composition.
However, the prior art is on basalt CO 2 There are also problems in the measurement and evaluation of mineralized sequestered carbon fixation efficiency: in a first aspect, not all of the reactive ions in basalt contribute to carbon sequestration due to the likelihood that basalt may undergo weathering during formation, resulting in some of the reactive minerals being consumed during formation to calcite, or due to the invasion of carbonate minerals from sedimentary rock constituents during burial In the prior art, the content of all carbon fixing ions which possibly react is calculated, and meanwhile, when the effective carbon fixing components are determined, only Ca and Mg ions are considered and the effect of Fe ions is ignored, so that inaccuracy exists in the evaluation of the carbon fixing efficiency; in the second aspect, the basalt mineralized CO after reaction is measured by using a thermogravimetric analyzer 2 There are some problems in the amount of the produced brucite (MgCO) under low temperature conditions 3 ·3H 2 The presence of structural water in O) results in a significant increase in measured carbon sequestration by pyrolysis at elevated temperatures.
The following documents are background information related to the present invention:
[1] Gadikota G, Swanson E J, Zhao H, et al. Experimental design and dataanalysis for accurate estimation of reaction kinetics and conversion for carbon mineralization[J]. Industrial&Engineering Chemistry Research, 2014, 53(16): 6664-6676.
disclosure of Invention
In order to solve the problems in the prior art, namely the problems that the basalt carbon sequestration efficiency measurement in the prior art is inaccurate and larger than the actual value, the invention provides a basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation, which comprises the following steps:
CO calculated based on all basalt effective reactive ions 2 Theoretical carbon sequestration potential and CO immobilized in basalt in the form of secondary carbonate rock 2 The mass percentage is used for obtaining the actual carbon fixation potential of basalt;
crushing basalt into powder with a set size, filtering the powder through a set screen, and cleaning and drying the filtered powder to obtain pretreated basalt powder;
A high-temperature high-pressure intermittent reactor is used as a main device for evaluating the carbon fixation efficiency of basalt powder, a high-precision temperature control system is used for constant-temperature hot bath, a speed-adjustable stirrer is arranged, and quick CO is carried out at set temperature and pressure 2 Carrying out water rock reaction;
quantification of mechanical disturbance on fast CO by constant stirring speed 2 Influence of water rock reaction and by installing high-precision pressure sensorCollecting pressure data to obtain quick CO 2 A pressure drop curve for the water-rock reaction;
based on the fast CO 2 Pressure drop curve of water rock reaction and integral to obtain fast CO 2 Consumption of CO in water rock reactions 2 Is a measure of (2);
based on the fast CO 2 Consumption of CO in water rock reactions 2 Calculating the basalt carbon sequestration rate according to the calculated amount, and calculating the basalt carbon sequestration efficiency according to the basalt carbon sequestration potential.
In some preferred embodiments, the basalt carbon sequestration potential is obtained by the following steps:
based on all basalt effective reactive ions and CO 2 The ratio of carbonate rock generated by complete reaction in basalt is used for obtaining CO when basalt carbon fixation reaction is complete 2 Theoretical carbon sequestration potential;
pulverizing basalt into powder of a predetermined size, and measuring total inorganic carbon content in basalt by TOC-L instrument T；
Based on the total inorganic carbon content of the basaltTCalculating CO fixed in basalt in the form of secondary carbonate rock 2 Mass percent;
carbon fixation reaction complete time CO based on basalt 2 Theoretical carbon sequestration potential and CO immobilized in basalt in the form of secondary carbonate rock 2 The mass percentage is used for obtaining the actual carbon fixation potential of basalt.
In some preferred embodiments, the basalt carbon fixing reaction is complete with CO 2 The theoretical carbon fixation potential is:
wherein,W Ca 、W Mg 、W Fe ca in basalt samples respectively 2+ Ion, mg 2+ Ion, fe 2+ The mass ratio of the ions is such that,M Ca 、M Mg 、M Fe the molar masses of Ca, mg and Fe respectively,M CO2 is two (two)The relative molecular mass of carbon oxides.
In some preferred embodiments, the basalt is pulverized into particles of a set size and the total inorganic carbon content of the basalt is tested by phosphoric acid reactionTComprising:
the basalt is crushed into powder with set size, and the total inorganic carbon content in the basalt is tested by TOC-L instrumentTComprising:
crushing basalt into small samples by a jaw crusher, and grinding the small samples into basalt powder with the size of 200 microns by a star ball mill;
placing the basalt powder into acetone for ultrasonic cleaning, removing superfine suspension after cleaning, repeatedly performing ultrasonic clearing until the suspension is clear, and drying the cleaned powder at room temperature to obtain pretreated basalt powder;
Standing the pretreated basalt powder and deionized water for 5 minutes, fully mixing, and fully reacting the mixed pretreated basalt powder and deionized water with 75% high-concentration phosphoric acid at 200 ℃;
recording of CO released by the reaction by TOC-L instrument 2 Curve of quantity and time is integrated to obtain total inorganic carbon content in basaltT。
In some preferred embodiments the basalt is CO immobilized in the form of secondary carbonate 2 The mass percentage is as follows:
wherein,representing CO immobilized in basalt in the form of secondary carbonate rock 2 The mass percentage of the components is as follows,M CO2 is CO 2 Is used for the preparation of a polymer,M C is the relative atomic mass of carbon.
In some preferred embodiments, the basalt has an actual carbon sequestration potential of:
wherein,is basalt actual carbon sequestration potential.
In some preferred embodiments, the preset high-temperature and high-pressure batch reactor comprises a reaction kettle, a temperature and pressure control system, a pressure sensor and a solid-liquid collecting and separating system;
the reaction kettle is used for conveying pressurized CO 2 Is connected with a high-pressure injection pump to obtain a high-speed CO 2 A vessel for water rock reaction conditions;
the temperature and pressure control system and the pressure sensor are used for controlling the temperature and the pressure in the reaction kettle through the temperature and pressure control system and collecting the rapid CO through the pressure sensor 2 A pressure drop curve for the water-rock reaction;
the solid-liquid collecting and separating system is used for rapidly collecting CO 2 And (3) solid-liquid separation in the water-rock reaction, and after the reaction is finished, air-drying and collecting solids in the reaction kettle.
In some preferred embodiments, the catalyst has a fast CO 2 The prefabrication method of the container under the reaction condition of the water rock is as follows:
the vacuum pump is used for connecting an air outlet pipeline of the reaction kettle, the air extraction speed is set, and residual air in the reaction kettle is completely extracted, so that the reaction kettle is in a vacuum state;
introducing the prepared CO2 saturated solution and pure CO into the reaction kettle under the preset pressure 2 Gas and pressure are maintained, and rapid CO is obtained 2 A vessel for water rock reaction conditions.
In some preferred embodiments, the basalt carbon sequestration rate is:
wherein,is the carbon fixation rate, ->Is the pressure which is reduced in the preset high temperature-high pressure batch reactor,Vis the volume of gas in the reaction kettle, +.>Is CO 2 Is used for the preparation of a polymer,His fast CO 2 The temperature of the reaction of the water and the rock,Zis CO in a gas property database 2 The compression factor of the gas is set,Ris a gas constant->Is the initial basalt quality.
In some preferred embodiments, the basalt carbon sequestration efficiency is:
Wherein,Yis the basalt carbon fixation efficiency and the preparation method thereof,is the carbon fixation rate, ->Is basalt carbon sequestration potential.
The invention has the beneficial effects that:
(1) According to the basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation, due to the fact that a plurality of ions in basalt are considered, due to the fact that formed carbonate rock has high solubility in water and is difficult to precipitate out of solution under actual conditions, the method hardly contributes to carbon sequestration, only effective reactive ions contributing to carbon sequestration are considered, and CO in the complete reaction of basalt carbon sequestration is effectively improved 2 Accuracy of theoretical storage amount.
(2) The basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation of the invention is used for measuring the existence of basalt existing in the form of carbonate rock in basaltIs the part of CO 2 Deducting, quantitatively evaluating the carbon sequestration potential of the basalt, further improving the accuracy and precision of the basalt carbon sequestration potential evaluation, providing theoretical guidance for the carbon sequestration capability evaluation of the basalt, and sealing up CO for the basalt geology 2 The engineering site selection provides scientific basis.
(3) The basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation of the invention sets scientific basalt-CO 2 The method and the process for the water rock reaction accurately obtain the pressure drop curve in the water rock reaction, and the basalt carbon sequestration rate is efficiently and accurately obtained by analyzing the pressure drop curve, so that the accuracy and precision of basalt carbon sequestration efficiency measurement are effectively improved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
FIG. 1 is a flow diagram of a basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential assessment of the present invention;
FIG. 2 is a diagram of total inorganic carbon content in a basalt based on one embodiment of a basalt carbon sequestration efficiency measurement method of the present invention based on a basalt carbon sequestration potential evaluationTIs a schematic diagram of the test flow;
FIG. 3 is an exemplary diagram of basalt samples and processed powder of one embodiment of a basalt carbon sequestration efficiency measurement method based on a basalt carbon sequestration potential assessment of the present invention;
FIG. 4 is a schematic diagram of a high temperature-high pressure batch reactor and reaction process of one embodiment of a basalt carbon sequestration efficiency measurement method based on a basalt carbon sequestration potential assessment of the present invention;
FIG. 5 is a graph of pressure change and CO of a reactor for one embodiment of a basalt carbon sequestration efficiency measurement method based on a basalt carbon sequestration potential assessment of the present invention 2 A consumption profile;
FIG. 6 is a schematic diagram of a computer system for a server implementing embodiments of the methods, systems, and apparatus of the present application.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Some terms in the present invention define:
carbon fixing ions: basalt mesogenic agent and CO 2 The aqueous solution reacts to form metal ions, such as Fe, which stabilize the carbonate mineral 2+ 。
Carbon sequestration potential (P) CO2 ): basalt and CO are indicated 2 The mass ratio of stable carbonate rock formed by complete reaction to basalt mass is kg CO 2 /t。
Carbon fixation (E) CO2 ): basalt and CO are indicated 2 The mass percent of the stable carbonate rock formed by the reaction accounts for the mass percent of basalt.
Carbon fixation efficiency (Y): basalt and CO are indicated 2 The extent of reaction to form stable carbonate,%.
The invention provides a basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation, which provides theoretical guidance for the carbon sequestration capacity of basalt and the carbon sequestration of CO for basalt geology 2 Engineering site selection provides scientific basis, including:
(1) Basalt theory carbon sequestration potential calculation: basalt-based effective reactive ion and CO 2 The ratio of carbonate rock generated by the reaction in basalt is used for obtaining CO when basalt carbon fixation is completely reacted 2 Theoretical storage capacity;
(2) Total inorganic carbon content in basaltTAnd (3) calculating: pulverizing basalt into powder of a predetermined size, and testing total inorganic carbon content in basalt by phosphoric acid reactionT；
(3) CO in basalt samples that has been fixed in the form of carbonate rock 2 And (3) content calculation: based on total inorganic carbon content in basaltTCalculation of CO fixed in carbonate form in basalt 2 The content is as follows;
(4) Basalt carbon sequestration potential calculation: carbon sequestration complete reaction based on basalt 2 Theoretical storage and CO in basalt fixed in carbonate form 2 The content of basalt is obtained, and the carbon fixation potential of basalt is obtained;
(5) basalt-CO 2 Water rock reaction: filtering basalt powder through a set screen, cleaning and drying the filtered powder, and placing the cleaned and dried powder into a preset high-temperature and high-pressure batch reactor to obtain quick CO 2 A pressure drop curve for the water-rock reaction;
(6) Pressure Drop Curve (PDC) analysis: based on the fast CO 2 Obtaining a pressure drop curve of the water-rock reaction, and obtaining the consumption CO in the water-rock reaction 2 Is a measure of (2);
(7) Basalt carbon sequestration rate and carbon sequestration efficiency calculation: based on consumption of CO in the reaction 2 Calculating the basalt carbon sequestration rate, and calculating the basalt carbon sequestration efficiency by combining the basalt carbon sequestration potential.
In order to more clearly describe the basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation of the present invention, each step in the embodiment of the present invention is described in detail below with reference to fig. 1.
According to the basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation, which is disclosed by the first embodiment of the invention, the steps are described in detail as follows:
step S10, actual carbon sequestration potential calculation of basalt:
CO calculated based on all basalt effective reactive ions 2 Theoretical carbon sequestration potential and CO immobilized in basalt in the form of secondary carbonate rock 2 The mass percentage is used for obtaining the actual carbon fixation potential of basalt.
Step S11, calculating the basalt theory carbon sequestration potential: based on all basalt effective reactive ions and CO 2 The ratio of carbonate rock generated by complete reaction in basalt is used for obtaining CO when basalt carbon fixation reaction is complete 2 The theoretical carbon fixation potential comprises the following steps:
the basalt theoretical carbon sequestration potential refers to the unit mass of basalt and CO 2 CO in stabilized carbonate rock formed by complete reaction 2 The ratio of the mass of (2) to the mass of basalt is as shown in formula (1):
（1）
wherein,representing CO at the time of complete reaction of basalt carbon sequestration of unit mass 2 Theoretical carbon fixation potential, unit: kg CO 2 /t；/>Representative can be combined with CO 2 First of reaction to form carbonateiElemental molar mass of metal ions, unit: mol/g; />Representative can be combined with CO 2 First of reaction to form carbonateiThe element mass of the metal ions accounts for the percentage of the total mass of the basalt in units of: the%; />Represents CO 2 Relative molecular mass, unit: mol/g.
Thermodynamically, many metal cations can be combined with CO 2 Carbonate (CO) in aqueous solution 3 2- ) Bicarbonate (HCO) 3 - ) Carbonate formation, including Mg, ca, fe, al, mn, na and K ions, etc. But many ions are due to: (1) the carbonates formed have a high solubility in water and are difficult to precipitate from solution under practical conditions, such as Na + 、K + The method comprises the steps of carrying out a first treatment on the surface of the (2) The reaction kinetics required for formation are too slow, e.g. Al 3+ The method comprises the steps of carrying out a first treatment on the surface of the (3) The carbonate formed is difficult to stably exist for a long time at normal temperature, such as Fe 3+ . Therefore, these ions hardly contribute to the actual carbon fixation.
Based on the theory and the detailed examinationIt is contemplated that the ions contributing to the actual carbon fixation contemplated by the present invention include Ca alone 2+ 、Mg 2+ 、Fe 2+ The content of basalt effective reactive ion in the present invention includes Ca 2+ Ion, mg 2+ Ion and Fe 2+ Ions.
At this time, basalt can be mixed with CO 2 Mineralized CO in basalt per unit mass when the active carbon-fixing components react to form stable carbonates 2 The mass ratio, namely CO when the basalt carbon fixation reaction is complete 2 Theoretical carbon fixation potential after simplifying formula (1), as shown in formula (2):
（2）
wherein,W Ca 、W Mg 、W Fe ca in basalt samples respectively 2+ Ion, mg 2+ Ion, fe 2+ Mass ratio of ions, unit: the%;M Ca 、M Mg 、M Fe the molar mass of Ca, mg and Fe is as follows: mol/g;M CO2 relative molecular mass of carbon dioxide, unit: mol/g.
Determination of Ca, mg, fe ion content in basalt by X-ray fluorescence analysis (XRF), due to iron carbonate (Fe 2 (CO 3 ) 3 ) Is difficult to exist for a long time at normal temperature and therefore is not considered as an effective carbonium ion content, and the total iron content is not distinguished between divalent and trivalent iron by XRF, and is determined according to Alfressson et al (Alfresson H A, oelkers E H, hardarsson B S, et al The geology and water chemistry of the Hellisheidi, SW-Iceland carbon storagesite [ J)]International Journal of Greenhouse Gas Control, 2013, 12:399-418.) the iron element in the in situ basalt is mainly Fe 2+ Therefore Fe is adopted 2+ Representing total iron.
Step S12, based on the content of secondary carbonate in basalt (part which needs to be deducted and ignored in the prior art)Calculating total inorganic carbon content of basalt sampleT: pulverizing basalt into powder of a predetermined size, and measuring total inorganic carbon content in basalt by TOC-L instrumentTIn one embodiment of the present invention, total inorganic carbon (CO 2 Is in the form of inorganic carbon in basalt) is calculated, the total inorganic carbon contentTThe test flow is schematically shown in FIG. 2:
representative basalt cores taken were crushed into centimeter-sized small samples by a jaw crusher (AM 750S) and the small samples were ground into 200 micron-sized basalt powder by a planetary ball mill (Retsch PM 200).
Because the existing carbonate rock content in basalt is far lower than the content in sedimentary rock and the distribution is extremely uneven, based on the upper limit and the precision requirement of a measurement sample of a TOC-L instrument, a sufficient amount of basalt powder is weighed by a high-precision meter to about 300mg, 5 parallel samples are prepared to prevent the calculation influence caused by the heterogeneity in the samples, and simultaneously, a sufficient amount of 75% high-concentration phosphoric acid and deionized water are prepared for standby.
And drawing a total inorganic carbon standard calibration curve of the TOC-L instrument. Accurately sucking 10.00 m inorganic carbon standard stock solution (1000 mg/L) into a 100 ml volumetric flask, diluting with water to a marked line, uniformly mixing to prepare 100mgL use solution, obtaining a series of 0-100 mgL standard solutions by utilizing an automatic dilution function of an instrument, and drawing a standard curve according to peak areas to ensure accurate measurement of subsequent inorganic carbon.
Whether the sample can fully react with phosphoric acid directly influences the result of TIC measurement, and the weighed basalt powder is put into the reaction kettle and kept stand for 5 minutes, so that the reaction efficiency can be improved. Finally, the mixed basalt powder and deionized water were fully reacted with 75% high concentration phosphoric acid at 200 ℃ and repeated 5 times.
Recording of CO released by the reaction by TOC-L instrument 2 Integrating and automatically outputting the curve of the quantity and the time by combining with a standard curve, obtaining the total inorganic carbon content value of five samples after five times of testing, and averaging the five times of data to obtain the final total inorganic carbon contentT。
Step S13, basalt sample is treated with carbonAcid rock form fixed CO 2 And (3) content calculation: based on the total inorganic carbon content of the basaltTCalculating ineffective carbon sequestration potential in basalt, as shown in formula (3):
（3）
Wherein,representing CO immobilized in basalt in the form of secondary carbonate rock 2 Mass percent, unit: the%;M CO2 is CO 2 Relative molecular mass, units: mol/g;M C relative atomic mass of carbon, units: mol/g.
Step S14, actual carbon sequestration potential calculation of basalt: carbon fixation reaction complete time CO based on basalt 2 Theoretical carbon sequestration potential and ineffective carbon sequestration potential, obtaining basalt actual carbon sequestration potential, as shown in formula (4):
（4）
wherein,the unit is basalt actual carbon fixation potential: kg CO 2 /t。
And S20, crushing basalt into powder with a set size, filtering the powder through a set screen, and cleaning and drying the filtered powder to obtain pretreated basalt powder. As shown in FIG. 3, which is an exemplary diagram of basalt sample and processed powder of one embodiment of the basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation of the present invention, where the pre-processed basalt powder may be used to perform the total inorganic carbon content of basalt as described aboveTThe basalt powder may be prefabricated again, without limitation.
Step S30, basalt-CO 2 Water rock reaction: with a high-temperature-high-pressure batch reactor as the brown Main body device for evaluating carbon fixation efficiency of wushu powder adopts a high-precision temperature control system to perform constant-temperature hot bath, a speed-adjustable stirrer is arranged, and rapid CO is performed at set temperature and pressure 2 And (3) water rock reaction.
Measuring basalt mineralized CO after reaction by utilizing thermogravimetric analysis instrument 2 There are some problems in the amount of the produced brucite (MgCO) under low temperature conditions 3 ·3H 2 Structural water exists in O), and the structural water is pyrolyzed together under the high-temperature condition, so that the measured carbon fixation rate is larger; the traditional method carries out component quantitative analysis on reactants, and the system carries out quantitative treatment through dynamic change parameters in the reaction process, does not consider the reaction kinetic process of the reactants, and only considers CO in the reaction process 2 Variation of the amount.
The invention takes the high temperature-high pressure intermittent reactor as a main device for basalt carbon sequestration efficiency evaluation, and pressure data are collected by installing a high-precision pressure sensor, the pressure collection precision is 0.05% FS, and CO is quantized 2 Reaction amount; the high-precision temperature control system is adopted for constant-temperature hot bath, the temperature control precision is +/-0.5 ℃, the device is provided with an adjustable speed stirrer, the reaction speed is accelerated under high temperature and high pressure, and the influence of mechanical disturbance on the reaction is quantified through constant stirring speed.
Step S40, quantifying mechanical disturbance on fast CO by constant stirring speed 2 The influence of water rock reaction, and pressure data are acquired by installing a high-precision pressure sensor, so that quick CO is obtained 2 Pressure drop profile of the water rock reaction.
As shown in FIG. 4, a high temperature-high pressure batch reactor and a reaction process schematic diagram of an embodiment of a basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation of the present invention, basalt-CO 2 The water rock reaction experiment comprises:
(a) Sample preparation: sample preparation including powder sample preparation and CO formulation 2 Saturated aqueous solution.
Firstly, the core obtained is crushed into small pieces by a jaw crusher (AM 750S), and then is further crushed by a planetary ball mill (Retsch PM 200), in order to avoid inaccurate dynamics caused by fine particles with broken mineral crystal structures due to overgrinding, a 100-200 mesh screen is used, and grain size samples of 75-150 μm are obtained respectively.
To remove impurities adhering to the mineral surface, the cleaning cycle is repeated by performing several ultrasonic cleaning cycles in acetone and discarding the ultra-fine suspension at the end of each cycle until the discarded liquid phase becomes clear, and the resulting powder is dried and stored at 60 ℃.
Then, a vacuum pump is used for connecting an air outlet pipeline of the reaction kettle, proper air extraction speed is set, residual air in the reaction kettle is completely extracted, the reaction kettle is in a vacuum state, and high-purity CO is introduced into deionized water (excluding interference of trace elements in water on water rock reaction) under a preset pressure (5 MPa) 2 Gas configuration CO 2 And (3) saturated aqueous solution, maintaining the pressure, and standing for later use after stabilizing. (i.e. with fast CO) 2 Prefabrication method of container under water rock reaction condition
(b) Designing a reaction kettle: research and development to achieve fast CO 2 The high temperature-high pressure intermittent reactor for water rock reaction includes reactor, temperature and pressure control system, pressure sensor and solid-liquid collecting and separating system:
reaction kettle and pressurized CO conveying device 2 Is connected with a high-pressure injection pump to obtain fast CO 2 A vessel for water rock reaction;
the temperature and pressure control system and the pressure sensor are used for controlling the temperature and the pressure in the reaction kettle through the temperature and pressure control system and collecting the rapid CO through the pressure sensor 2 A pressure drop curve for the water-rock reaction;
solid-liquid collecting and separating system for rapid CO 2 And (3) solid-liquid separation in the water-rock reaction, and after the reaction is finished, air-drying and collecting solids in the reaction kettle.
The main technical indexes of the device are as follows: the internal volume of the kettle is 500 mL; temperature regulation range: room temperature is between 250 ℃; pressure range: normal pressure to 50 Mpa; stirring rate: 0-1500 r/min. The temperature, pressure, stirring speed and the like can be regulated in the experimental process, the pressure and the change in the system can be monitored, the pressure precision is +/-0.03 bar, and the temperature precision is +/-1 ℃.
(c) Reaction condition design: to obtain experimental data of basalt mineralization reaction kinetics and mineralization amount which are long enough, 70g of prepared basalt sample is added into a reaction kettle and 340g of CO is introduced 2 Saturated solution, then CO is injected into the reaction kettle through a high-pressure injection pump 2 The pressure in the kettle is maintained at 5MPa, the temperature is maintained at 60 ℃, the stirring rod starts to react by stirring at a constant speed of 600r/min for 180 days, and a pressure sensor is opened to automatically record the pressure curve change.
And (3) quantitatively adding basalt and other reactant materials into the reactor, installing a flange plate and a sealing system, testing tightness by using nitrogen, stabilizing the pressurizing force for a period of time, ensuring no pressure change and ensuring good sealing. Vacuumizing the reactor by a vacuum pump, stopping until the pressure is reduced to-0.1 MPa, closing all valves, setting the reaction temperature, and flushing CO when the temperature in the reactor reaches the preset temperature 2 Pressurizing the gas to a preset reaction pressure, stabilizing for a period of time, and injecting quantitative and advanced saturated CO into the reactor by using the constant pressure of a high-precision injection pump 2 The pressure of the aqueous solution (under the condition of reaction temperature and pressure) was adjusted to the reaction pressure, stirring was started, and the pressure change was recorded.
Step S50, pressure Drop Curve (PDC) analysis: based on the fast CO 2 Pressure drop curve of water rock reaction and integral to obtain fast CO 2 Consumption of CO in water rock reactions 2 Is a combination of the amounts of (a) and (b).
Pressure data processing:
PV=ZnRH，P 1 V=Zn 1 RH，P 2 V=Zn 2 RH，……，P m V=Zn m RHwherein, the method comprises the steps of, wherein,Pis the initial reaction pressure;P1、P2、……、P m is the pressure in the reactor at different moments;Voccupying a volume of space for gas within the reactor;Zis a gas compression factor;n、n 1 、n 2 、……、n m is CO 2 The amount of substance at different moments in time;Ris the molar gas constant;His a thermodynamic temperature.
Along with CO in water in the reaction process 2 The aqueous solution becomes undersaturated, CO 2 Can be continuously dissolved into water, at the moment, the pressure can be reduced at non-uniform speed, and the CO under different pressures can be calculated by using a gas state equation 2 Until the pressure no longer changes, thereby quantifying the reaction amount.
As shown in FIG. 5, the pressure change curve and CO of the reaction kettle are provided as an embodiment of the basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation 2 The consumption curve is shown in FIG. 5 (a) showing the pressure of the reaction vessel with time, and in FIG. 5 (b) showing CO 2 Consumption versus time, pressure represents the Pressure of the reactor in units of: bar (1 bar=100 kpa), CO 2 Consumer Consumption, units: 10 -2 Molar, reaction time represents Reaction time, unit: and (3) days.
After the reaction of the sample in the reactor was completed, the reactor was returned to normal temperature and pressure, the reactor slurry was taken out and air-dried at 60 ℃, and all solids in the interior were collected. Because the inside of the reaction kettle is saturated with CO 2 Solution, pure CO 2 Gas, basalt powder three-phase composition and multiple tests have no leakage problem, so the drop in pressure curve is due to CO 2 Based on the consumption of (2) and calculating the consumption of CO 2 Is a combination of the amounts of (a) and (b).
Step S60, calculating the basalt carbon sequestration rate and the basalt carbon sequestration efficiency: based on the fast CO 2 Consumption of CO in water rock reactions 2 Calculating the basalt carbon sequestration rate according to the calculated amount, and calculating the basalt carbon sequestration efficiency according to the basalt carbon sequestration potential.
The basalt carbon sequestration rate is shown as formula (5):
（5）
wherein,is a solidCarbon ratio, unit: the%; />Is the pressure of the decline in the preset high temperature-high pressure batch reactor (after the blank experiment is corrected); VIs the volume of gas in the reaction kettle;M CO2 is the relative molecular mass, mol/g, of carbon dioxide;His fast CO 2 The temperature of the water rock reaction;Zis CO in Aspen 8.0 gas property database 2 A compression factor of the gas, the compression factor being dependent on pressure and temperature;Ris the gas constant (8.314J/mol); />Is the initial basalt mass, unit: g.
the basalt carbon sequestration efficiency is shown in formula (6):
（6）
wherein,Ythe basalt carbon fixation efficiency is as follows: percent (a),is the carbon fixation rate, ->Is basalt carbon sequestration potential.
From the data corresponding to the curve shown in FIG. 5, it is possible to calculate 180-day reaction mineralized CO in one embodiment of the invention 2 About 1.14g, thereby obtaining fast CO 2 After the water rock reacts for 180 days, the basalt carbon fixation rate is 1.63%, and the carbon fixation efficiency is 7.42%.
Although the steps are described in the above-described sequential order in the above-described embodiments, it will be appreciated by those skilled in the art that in order to achieve the effects of the present embodiments, the steps need not be performed in such order, and may be performed simultaneously (in parallel) or in reverse order, and such simple variations are within the scope of the present invention.
According to a second embodiment of the invention, a basalt carbon sequestration efficiency measurement system based on basalt carbon sequestration potential evaluation, the measurement system comprises:
A first module configured to calculate CO based on all basalt effective reactive ions 2 Theoretical carbon sequestration potential and CO immobilized in basalt in the form of secondary carbonate rock 2 The mass percentage is used for obtaining the actual carbon fixation potential of basalt;
a second module configured to pulverize basalt into powder of a set size, filter the powder through a set screen, and perform a cleaning and drying operation on the filtered powder to obtain pretreated basalt powder;
a third module configured by using a high-temperature high-pressure intermittent reactor as a main device for evaluating basalt powder carbon fixation efficiency, adopting a high-precision temperature control system to perform constant-temperature hot bath, setting an adjustable speed stirrer, and performing rapid CO at a set temperature and pressure 2 Carrying out water rock reaction;
a fourth module configured to quantify the mechanical disturbance to the fast CO by a constant stirring speed 2 The influence of water rock reaction, and pressure data are acquired by installing a high-precision pressure sensor, so that quick CO is obtained 2 A pressure drop curve for the water-rock reaction;
a fifth module configured to, based on the fast CO 2 Pressure drop curve of water rock reaction and integral to obtain fast CO 2 Consumption of CO in water rock reactions 2 Is a measure of (2);
a sixth module configured to be based on the fast CO 2 Consumption of CO in water rock reactions 2 Calculating the basalt carbon sequestration rate according to the calculated amount, and calculating the basalt carbon sequestration efficiency according to the basalt carbon sequestration potential.
It will be clear to those skilled in the art that, for convenience and brevity of description, the specific working process of the system described above and the related description may refer to the corresponding process in the foregoing method embodiment, which is not repeated here.
It should be noted that, in the basalt carbon sequestration efficiency measurement system based on basalt carbon sequestration potential evaluation provided in the foregoing embodiment, only the division of the foregoing functional modules is illustrated, in practical application, the foregoing functional allocation may be completed by different functional modules according to needs, that is, the modules or steps in the foregoing embodiment of the present invention are decomposed or combined again, for example, the modules in the foregoing embodiment may be combined into one module, or may be further split into a plurality of sub-modules, so as to complete all or part of the functions described above. The names of the modules and steps related to the embodiments of the present invention are merely for distinguishing the respective modules or steps, and are not to be construed as unduly limiting the present invention.
An electronic device of a third embodiment of the present invention includes:
At least one processor;
and a memory communicatively coupled to at least one of the processors;
the memory stores instructions executable by the processor for execution by the processor to implement the basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential assessment described above.
A computer-readable storage medium of a fourth embodiment of the present invention stores computer instructions for execution by the computer to implement the basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation described above.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the storage device and the processing device described above and the related description may refer to the corresponding process in the foregoing method embodiment, which is not repeated herein.
Those of skill in the art will appreciate that the various illustrative modules, method steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the program(s) corresponding to the software modules, method steps, may be embodied in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. To clearly illustrate this interchangeability of electronic hardware and software, various illustrative components and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as electronic hardware or software depends upon the particular application and design constraints imposed on the solution. Those skilled in the art may implement the described functionality using different approaches for each particular application, but such implementation is not intended to be limiting.
Referring now to FIG. 6, there is shown a block diagram of a computer system for a server implementing embodiments of the methods, systems, and apparatus of the present application. The server illustrated in fig. 6 is merely an example, and should not be construed as limiting the functionality and scope of use of the embodiments herein.
As shown in fig. 6, the computer system includes a central processing unit (CPU, central Processing Unit) 601, which can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM) 602 or a program loaded from a storage section 608 into a random access Memory (RAM, random Access Memory) 603. In the RAM603, various programs and data required for system operation are also stored. The CPU 601, ROM 602, and RAM603 are connected to each other through a bus 604. An Input/Output (I/O) interface 605 is also connected to bus 604.
The following components are connected to the I/O interface 605: an input portion 606 including a keyboard, mouse, etc.; an output portion 607 including a Cathode Ray Tube (CRT), a liquid crystal display (LCD, liquid Crystal Display), and the like, a speaker, and the like; a storage section 608 including a hard disk and the like; and a communication section 609 including a network interface card such as a LAN (local area network ) card, a modem, or the like. The communication section 609 performs communication processing via a network such as the internet. The drive 610 is also connected to the I/O interface 605 as needed. Removable media 611 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is installed as needed on drive 610 so that a computer program read therefrom is installed as needed into storage section 608.
In particular, according to embodiments of the present disclosure, the processes described above with reference to flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method shown in the flowcharts. In such an embodiment, the computer program may be downloaded and installed from a network through the communication portion 609, and/or installed from the removable medium 611. The above-described functions defined in the method of the present application are performed when the computer program is executed by a Central Processing Unit (CPU) 601. It should be noted that the computer readable medium described in the present application may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present application, however, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations of the present application may be written in one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The terms "first," "second," and the like, are used for distinguishing between similar objects and not for describing a particular sequential or chronological order.
The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus/apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus/apparatus.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
Claims (10)
1. The basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation is characterized by comprising the following steps:
CO calculated based on all basalt effective reactive ions 2 Theoretical carbon sequestration potential and CO immobilized in basalt in the form of secondary carbonate rock 2 The mass percentage is used for obtaining the actual carbon fixation potential of basalt;
crushing basalt into powder with a set size, filtering the powder through a set screen, and cleaning and drying the filtered powder to obtain pretreated basalt powder;
a high-temperature high-pressure intermittent reactor is used as a main device for evaluating the carbon fixation efficiency of basalt powder, a high-precision temperature control system is used for constant-temperature hot bath, a speed-adjustable stirrer is arranged, and quick CO is carried out at set temperature and pressure 2 Carrying out water rock reaction;
quantification of mechanical disturbance on fast CO by constant stirring speed 2 Influence of water-rock reaction and by installing high-precision pressure transmissionThe sensor collects pressure data to obtain quick CO 2 A pressure drop curve for the water-rock reaction;
based on the fast CO 2 Pressure drop curve of water rock reaction and integral to obtain fast CO 2 Consumption of CO in water rock reactions 2 Is a measure of (2);
based on the fast CO 2 Consumption of CO in water rock reactions 2 Calculating the basalt carbon sequestration rate according to the calculated amount, and calculating the basalt carbon sequestration efficiency according to the basalt carbon sequestration potential.
2. The basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation according to claim 1, wherein the basalt carbon sequestration potential is obtained by:
Based on all basalt effective reactive ions and CO 2 The ratio of carbonate rock generated by complete reaction in basalt is used for obtaining CO when basalt carbon fixation reaction is complete 2 Theoretical carbon sequestration potential;
pulverizing basalt into powder of a predetermined size, and measuring total inorganic carbon content in basalt by TOC-L instrumentT；
Based on the total inorganic carbon content of the basaltTCalculating CO fixed in basalt in the form of secondary carbonate rock 2 Mass percent;
carbon fixation reaction complete time CO based on basalt 2 Theoretical carbon sequestration potential and CO immobilized in basalt in the form of secondary carbonate rock 2 The mass percentage is used for obtaining the actual carbon fixation potential of basalt.
3. The basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation according to claim 2, characterized in that the basalt carbon sequestration reaction is complete with CO 2 The theoretical carbon fixation potential is:
；
wherein,W Ca 、W Mg 、W Fe ca in basalt samples respectively 2+ Ion, mg 2+ Ion, fe 2+ The mass ratio of the ions is such that,M Ca 、M Mg 、M Fe the molar masses of Ca, mg and Fe respectively,M CO2 is the relative molecular mass of carbon dioxide.
4. The basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation according to claim 2, characterized in that the basalt is crushed into particles of a set size and the total inorganic carbon content in the basalt is tested by phosphoric acid reaction TComprising:
the basalt is crushed into powder with set size, and the total inorganic carbon content in the basalt is tested by TOC-L instrumentTComprising:
crushing basalt into small samples by a jaw crusher, and grinding the small samples into basalt powder with the size of 200 microns by a star ball mill;
placing the basalt powder into acetone for ultrasonic cleaning, removing superfine suspension after cleaning, repeatedly performing ultrasonic clearing until the suspension is clear, and drying the cleaned powder at room temperature to obtain pretreated basalt powder;
standing the pretreated basalt powder and deionized water for 5 minutes, fully mixing, and fully reacting the mixed pretreated basalt powder and deionized water with 75% high-concentration phosphoric acid at 200 ℃;
recording of CO released by the reaction by TOC-L instrument 2 Curve of quantity and time is integrated to obtain total inorganic carbon content in basaltT。
5. The basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation according to claim 2 or 4, characterized in that the CO in basalt fixed in the form of secondary carbonate rock 2 The mass percentage is as follows:
；
wherein,representing CO immobilized in basalt in the form of secondary carbonate rock 2 The mass percentage of the components is as follows,M CO2 is CO 2 Is used for the preparation of a polymer,M C is the relative atomic mass of carbon.
6. The basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential assessment of claim 5, wherein the basalt actual carbon sequestration potential is:
；
wherein,is basalt actual carbon sequestration potential.
7. The basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation according to claim 1, characterized in that the high temperature-high pressure batch reactor comprises a reaction kettle, a temperature-pressure control system, a pressure sensor and a solid-liquid collection and separation system;
the reaction kettle is used for conveying pressurized CO 2 Is connected with a high-pressure injection pump to obtain a high-speed CO 2 A vessel for water rock reaction conditions;
the temperature and pressure control system and the pressure sensor are used for controlling the temperature and the pressure in the reaction kettle through the temperature and pressure control system and collecting the rapid CO through the pressure sensor 2 A pressure drop curve for the water-rock reaction;
the solid-liquid collecting and separating system is used for rapidly collecting CO 2 And (3) solid-liquid separation in the water-rock reaction, and after the reaction is finished, air-drying and collecting solids in the reaction kettle.
8. The basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential assessment according to claim 7, characterized in that the method has a rapid CO 2 The prefabrication method of the container under the reaction condition of the water rock is as follows:
the vacuum pump is used for connecting an air outlet pipeline of the reaction kettle, the air extraction speed is set, and residual air in the reaction kettle is completely extracted, so that the reaction kettle is in a vacuum state;
introducing the prepared CO2 saturated solution and pure CO into the reaction kettle under the preset pressure 2 Gas and pressure are maintained, and rapid CO is obtained 2 A vessel for water rock reaction conditions.
9. The basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation according to claim 1, wherein the basalt carbon sequestration rate is:
；
wherein,is the carbon fixation rate, ->Is the pressure which is reduced in the preset high temperature-high pressure batch reactor,Vis the volume of gas in the reaction kettle, +.>Is CO 2 Is used for the preparation of a polymer,His fast CO 2 The temperature of the reaction of the water and the rock,Zis CO in a gas property database 2 The compression factor of the gas is set,Ris a gas constant->Is the initial basalt quality.
10. The basalt carbon sequestration efficiency measurement method based on basalt carbon sequestration potential evaluation according to claim 9, wherein the basalt carbon sequestration efficiency is:
；
wherein,Yis the basalt carbon fixation efficiency and the preparation method thereof,is the carbon fixation rate, - >Is basalt carbon sequestration potential.
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