Questions related to Carbon Capture
One technology, carbon capture and storage (CCS), stands tall for its ability to help energy-intensive sectors like power generation and heavy industry reduce their emissions. In fact, the International Energy Agency has said without CCS, achieving the world’s lower-emission targets will be virtually impossible. While the technology isn’t new, it is increasingly coming to the forefront of the climate conversation. But what is carbon capture and storage?
I am trying to do the simulations at high pressure (gas absorption and stripping case). The absorption is going on normally. However, the results of stripping or desorption are quite uncertain.
Case 1: The reboiler duty is 0.4 MW, it will converge and give the normal results.
Case 2: The reboiler duty is 0.41 MW, it will not converge, or converge with errors and totally different results.
Case 3: The reboiler duty is 0.39 MW, it will not converge, or converge with errors and totally different results.
This is very uncertain. A slight change in reboiler duty totally results in the deviation from normal results. What can be the reason for that. Need opinions/suggestions. Thanks!
In my chemical engineering design course we have to calculate the height of an absorber tower for a CCS(Carbon Capture and Storage) Plant with a capacity of 240,000 tonCO2/yr(27777kg/h). I used McCabe method but the height must be realistic and i have no idea if its realistic.
What is the range or average height for the height of the absorber?
I'm currently developing a Dynamic model of carbon capture plant using Aspen Plus dynamics. I was trying to see if there is a possibility to export the dynamics results into excel or any sort of tabular form for every time interval. The table forms are updated continuously as the model is running and no record is kept for each time interval separately.
a software which can estimate or calculate costs of using carbon capturing technologies-materials and analyze the data and results in the form of charts or other graphic forms Especially in buildings or more completely in construction industry
I am making a research about the use of supercritical CO2 as a green technology specifically in the production of 1,3-Propanediol or Succinic Acid through fermentation reactions (bacteria or fungus). Is there any specific information on this? Is it feasible to separate 1,3-propanediol from the other organic acids and salts? How much CO2 can I capture per year with this technology? Are carbon credits a possible revenue to compensate the excessive energy requirements?
The CO2 used in supercritical extractions can be recycled?
If yes, for how long can we use the same CO2?
If no, do we despose the same amount used in the beginning? Does it have the same chemical and physical structure?
I am trying to simulate a rate based carbon capture model using MEA (35 wt%) and other mixed amines in Aspen plus for a syngas production unit after water gas shift reaction. I am having a problem with how to size absorber and stripper columns in order to avoid flooding and pressure losses. One can use Sherwood correlation if they had known all the parameters. Is there any simpler way to go and solve this problem in the Aspen Plus interface? I have already tried to use the design option in Aspen Plus but I am getting many errors. I would be grateful for any inputs/suggestions on how to tackle this problem. Thank you. The absorber is carried out 30 bar and stripper at 1 bar. As the sizing mainly depends on gas and liquid flow rates, the flue gas flow rate is 100 kg/h and the solvent flow rate is around 580 kg/h. The carbon capture rate aimed at 95%
Hello to the wonderful research community,
I am working on a post-combustion carbon capture project with chemical absorption by MEA and I am simulating a rate based MEA model in Aspen Plus. I am successful in converging the recycle stream with the make-up streams of water and MEA in a closed cycle.
I want to conduct some sensitivity analysis in open cycle simulation to optimize some process parameters such as reboiler duty, size of absorber (height and diameter, m) with the independent parameters carbon capture rate (%), lean loading, rich loading. May I know, How can I set up these independent variables like Carbon capture (%), lean and rich loading (mol CO2/mol MEA) in Aspen Plus for the sensitivity analysis as they are not pre-available in the sensitivity analysis parameter interface. Could anyone please enlighten me on this with their expertise in the process simulation? Thank you in advance.
Hello, I have modelled carbon capture modelling in Aspen Plus using MEA (25 wt/wt %) solvent and the model works well in the open cycle and for the convergence of recycling lean solvent stream, I have added the Make-up streams of water and MEA for the steady-state and also included balance blocks to calculate and update the Make-up streams of MEA and water but still, I am facing issues in the convergence of Absorber and Stripper columns. I would be grateful for any inputs from the community on how to deal with this error. Thanks a lot in advance.
I am currently looking for an industrial process that can use some intensification in the separation part of the process. I am very interested in intensified separation for biofuel processes (bioethanol/propanol/butanol), intensified methanol production using pressure swing to produce CO from CO2 from the revers WGS reaction, intensified carbon capture,...
If anyone has experience in these fields and can inform me if one of these could be a good dissertation, I would like to hear it! I am also curious for other processes that can use some intensification to reduce energy use/cost...
If you have any info you can also send me a message!
We would like to estimate the carbon capture in endemic- threatened trees. Therefore, we need to sample the lowest number of trees to estimate allometric equations. Any suggestion is welcomed.
Hello, im doing my thesis in my petroleum engineering program and i want to do my thesis on carbon capture, i have a lot of research on the process done but not sure the argument direction to go in. i need help with the topic for example "should carbon capture be mandatory by government to reduce pollution"
I would like to make a research about the financial aspect about the Carbon Capture and Storage (CCS) technology. Basically, my research will discuss about the cash flow in CCS project which contains of income and outcome. Therefore, I would like to get some suggestion about the specific income and outcome source. Also, it will be better if there is any references for the specific value for both income and outcome
I am looking for not very expensive methods to determine how much CO2 could be trapped by coral reef species in the Caribbean. Also, I want to do the same thing in Coralline Algae.
Could you suggest something about this?
I am modelling a carbon capture stage using Aspen Plus with MEA solvent. While attempting to export the model to Aspen Dynamics to study the dynamic behavior, I get several error messages mainly due to the reactions in the Absorber and Stripper stages. Aspen dynamics do not support rate based radfrac unit as well as equilibrium reactions that are included in both stages. Is there any solution to input the reactions in a way that can be supported by Aspen dynamics while still maintaining the results from the Aspen Plus simulation
Estimation of the below ground carbon stock using the DGGE and the genes of microorganisms responsible for the carbon capture in soils
Hi again, while working on the carbon capture methods from a renewable energy project, i realized that thermodynamics has somewhat of a huge role to play when discussing gaseous capture, what are some of the available methods such as OxyFuel where co2 and o2 can be captured however but aren't energy intensive or are very low energy requiring methods?
Green field edges at the borders of agricultural fields have been promoted as a climate adaptation for dealing with erosion due to increased extreme precipitation events. Those green field edges will certainly have an impact on carbon capture, but the magnitud is still not clear.
I am currently working on a project with other 2 other based on carbon capture based tech however as above stated i have run into a conundrum of sorts where we are trying to find a prevent heating up of batteries in a confined space eg. an automobile, any suggestions on how we could do that based on an engineering perspective?
I d like to measure a level of acceptance of a new fertilizer which is carbon capturing (climate change) and Id like to use the TPB theory..
The U.N. Intergovernmental Panel on Climate Change has identified carbon capture as a key component in reducing carbon dioxide emissions and maintaining the planet's average temperature within 2 degrees Celsius above pre-industrial levels. To do that, it is estimated that by 2050, 5,000 to 10,000 metric tons of carbon dioxide need to be captured and stored each year......
I have a question about carbon capturing potential of Spirulina algae.
When I read the articles I see an initial carbon concentration which is expressed by % and then I see another % to express how much carbon has been captured. I do not understand percentage of what are these carbon. Okay for initial one I think it is lets say 5% of all the nutrients given to grow it then the last 73% which is captured carbon is 73% of what? Is there a formula for this or what is the logic?
Pleaaseee I need this and it is really urgent
Thank you in advance
In activated carbon samples synthesized by KOH and NaOH as activation agents, KOH activated samples have higher rate of micropore area than NaOH activated samples.
Although NaOH provides higher surface area than KOH, but the pore size distribution is wider.
My question is why KOH can produce smaller pores rather than NaOH?
The research is about the relations of soils and vegetation to soil carbon captured. The quantification is divided into soil organic carbon, soil inorganic carbon and total soil carbon.
I am currently doing a study about the reclamation of amine-rich wastewater from post combustion carbon capture. I would need to do a laboratory experiment and I would like to know if there is a published paper regarding the preparation of synthetic amine-rich wastewater.
I am currently assigned to design a carbon capture plant from atmospheric air. Most of the paper that I have read suggested to use NaOH to capture CO2 via absorption. Whereas MEA is commonly used to capture CO2 from flue gas post combustion. I am curious is it possible to substitute NaOH with MEA to capture CO2 from direct air? What are the things that I need to consider?
Can any one share the 10 Year Statistical Economical figures which support the communities and nation to build up this natural resource a new livelihood options and income in future?
Some references mention that the first gas injection project using CO2 was patented by Whorton, Brownscombe and Dyes from Atlantis Refining Company in 1952. However, this technology appears to be older. I am looking for information and documents on the history of gas injection.
Appreciate for your assistance
How to cost the benefits and amount of carbon sequestered?
What variables to consider when doing the cost benefit analysis?
In my study, I'm trying to calculate the amount of carbon footprint sequestered by vines. I've have seen row cropping as another source for carbon sequestration, I hope that someone can advise me regarding that.
In addition, if you have any additional factors that I can add to my model?
Thanks in advance,
I want to know how to quantify carbon sequestration and emission for fibre crop production and what are the simplest and most recent models and equations?
we know that amount of energy required for regeneration of carbon dioxide is much more in water amine solution. Can anybody tell me what is the exact amount of energy required per kg or per tonne CO2? If possible provide reference.
I'm struggling to find a reference reporting a figure related to the CO2 capture capacity for MEA (moles of CO2/mole of MEA).
Could you please recommend any?
I am looking for publications dealing with carbon accumulation in natural montane Bamboo stands (in Taiwan). Any recommendations? (Preferably no plantations)
We are working on enzyme engineering to convert methane to alcohols. As part of this process we wish to measure methane binding to various enzymes and would benefit from suggestions as to what has proved useful to others.
The goal of gasification/ steam reformation is the complete transformation of feedstock carbon content into gases (syngas) with high heating values. The Boudouard reaction is a very important process to achieve this goal by transforming solid residue carbon content and non-combustible carbon dioxide into a usable gas - carbon monoxide and increasing the heating value of the produced syngas.
I want to try to determine what is the content of free carbon in metal carbides powders, like TiC, B4C. Could anyone suggest what will be the best method to do this? Total carbon analysis (TCA) is not suitable, because I get whole amount of C. Any hints will be welcome.
Actually I am working on the biogeochemical cycling of the carbon, right now I am targeting plant assisted as well as some soil practices for enhancing the carbon pool. But I want to target the microbial mediated processes of carbon capture. I don't have much expertise in this field. So I am asking questions to know the some basic facts behind this idea from the concerned experts so that I can proceed further.
Thanks a lot for the cooperation.
The weight percent increase is less than 0.05% after I pass CO2 for 2 hours. Has anyone experienced this issue?
I would like to calculate the annual carbon fixed in a forest from my tree-rings measurements. But I don't know how close is the correlation between the radial growth and height growth. Can the allometric models calculate it?
My idea is to know how much carbon can be stored year per year in a tropical forest in different tree species. With the ring-with data I can calculate how the basal area is increasing year per year. But to calculate the volume I need the annual heigh too, since it is changing with the tree age. It is to understand the carbon storage over the history of a forest ecosystem, considering the differences between tree species.
I will be very grateful with some clue or idea to continue with this research.
An implication of this modelling study is that the net export of carbon at intermediate depths to the open ocean increases as the shelf seas grow and in particular as the area of the stratified shelf seas increases.
Is there a proxy which could be used, possibly from the sediments across the shelf break to test this idea?
The injection of acid gas into underground deep formations requires a compressor. However, the non-ideal behavior of these gases makes them more liquid like when pressurized. How does this behavior affect the compressor power requirements?
CO2 capture from flue gas has to be considered under stringent process conditions such as availability of flue gas (post combustion) at elevated temp and near atmospheric pressure, low CO2 partial pressure in flue gas, competitive adsorption by contaminants such as H2O, SOx/NOx . The CO2 capacity and CO2/N2 selectivity of known MOFs are not very promising at low pressure. Other important issues involved are questionable long term structural stability of MOF materials, high cost of even the most basic of organic linkers , challenges in robust formulations of MOF etc.
Despite tall claims in scientific literature close scrutiny suggests otherwise!
To estimate carbon stock of the tree systems in agriculture fields or urban trees with direct remote sensing methodologies accurately.
I am working on terrestrial carbon sequestration by traditional field based non-destructive methods. Is there any device through which we can directly and accurately measure the exact amount of carbon sequestered by plants on a monthly or annual basis? If there is, can anyone let me know where it is available from?
Carbon capture question: I am looking to estimate how much energy is released when a a unit of fossil fuel is burned versus how much energy it would take to sequester the CO2 that was released. Obviously a range for both numbers, but it just seems at the end of the day, entropy ensures it will take more energy to recapture the carbon than the amount released when it was burned (oxidized), so not sure how carbon capture can work from an energetics perspective