SIMULATION ANALYSIS OF CARBON DIOXIDE ABSORPTION IN CALCIUM LOOPING TECHNOLOGY IN CEMENT INDUSTRY
The transition to clean energy due to global warming is an environmental issue that must be faced today. Global warming is caused by the large amount of greenhouse gases trapped in the earth's atmosphere. CO2 gas as a greenhouse gas is the largest contributor to the greenhouse effect. CO2 ga...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/78821 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The transition to clean energy due to global warming is an environmental issue that
must be faced today. Global warming is caused by the large amount of greenhouse gases
trapped in the earth's atmosphere. CO2 gas as a greenhouse gas is the largest contributor to
the greenhouse effect. CO2 gas is produced from various sectors, one of which is the
industrial sector. One of the industries that produces CO2 is the cement industry. The
cement industry contributes around 5% – 8% CO2 to global CO2 emissions which come
from burning fossil fuels. One way to reduce CO2 emissions is to use the carbon capture
method. The carbon capture method is carried out by capturing CO2 in the exhaust gas
stream with a certain material. One material that can be used to capture CO2 is CaO, which
is a raw material for cement. This CO2 capture technology using CaO is called calcium
looping. This technology utilizes a cycle of calcination and carbonation reactions. The
calcination reaction occurs in the calciner and the carbonation reaction occurs in the
carbonator.
This research was conducted to model a calciner and carbonator that can be applied
to calcium looping technology by carrying out simulations in ANSYS Fluent software.
Simulation analysis in the calciner was carried out on the temperature distribution so that
the temperature adequacy for the calcination reaction could be evaluated. Analysis of the
simulation results on the carbonator was carried out on the distribution of CO2
concentrations after the carbonation reaction occurred to evaluate the percentage of CO2
gas captured.
The calciner for calcium looping has a diameter and height of 5.7 m and 25 m. The
amount of CaO needed in the carbonator to capture CO2 was 0.2433 kg/kgcl. The simulated
in the calciner was around 1132.8 K. The amount of CO2 captured by CaO in the carbonator
through the carbonation reaction was 77%.
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