Potties
Chemical
- Dec 7, 2011
- 2
Hi, I’m currently working as an intern at a bottling company and have been asked to do a feasibility study on a 1000 kg/h CO2 (beverage grade) plant.
The most attractive options have been identified as follow:
1) Recovering the CO2 from flue gas from either of the two boilers currently at the plant (one coal and one natural gas) of which only one is used at a time. Both produce an excess of steam, so there is enough energy available for the later amine/CO2 desorption process. Flue gas analysis is not available at the moment, but has been requested and should be available in the next few days.
2) Constructing a new natural gas boiler/burner used solely for the generation of CO2. Preliminary calculations have shown that at least 525 Nm/h (ref 0°C) will be required to achieve a final product stream as stated.
Now, can anyone tell me what the potential problems that I should look for? Obviously the recovery option would be the cheapest, but I’m weary of unforeseen problems.
I would also like to know which amine solution (MEA, DEA etc.) would be the best to use. Furthermore what concentrations/temperatures of solvent would be most favourable; apparently there are many problems when using higher conc. of MEA. Lastly, I would like to know what the energy requirement is for the absorption/ desorption process (Kj/kg CO2).
Thanks for any help provided
The most attractive options have been identified as follow:
1) Recovering the CO2 from flue gas from either of the two boilers currently at the plant (one coal and one natural gas) of which only one is used at a time. Both produce an excess of steam, so there is enough energy available for the later amine/CO2 desorption process. Flue gas analysis is not available at the moment, but has been requested and should be available in the next few days.
2) Constructing a new natural gas boiler/burner used solely for the generation of CO2. Preliminary calculations have shown that at least 525 Nm/h (ref 0°C) will be required to achieve a final product stream as stated.
Now, can anyone tell me what the potential problems that I should look for? Obviously the recovery option would be the cheapest, but I’m weary of unforeseen problems.
I would also like to know which amine solution (MEA, DEA etc.) would be the best to use. Furthermore what concentrations/temperatures of solvent would be most favourable; apparently there are many problems when using higher conc. of MEA. Lastly, I would like to know what the energy requirement is for the absorption/ desorption process (Kj/kg CO2).
Thanks for any help provided