PERENCANAAN SISTEM LIME SCRUBBING UNTUK PENGENDALIAN EMISI SO2 PADA KEGIATAN PEMBANGKIT LISTRIK TENAGA UAP
Power plants have an important role in in supplying electric energy in Indonesia. The rise of electric energy demand in Indonesia cause the increase of power plants developments, in particular for coal power plant. XYZ power plant is one of coal power plants and it is the biggest plant in Indones...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/33987 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Power plants have an important role in in supplying electric energy in Indonesia.
The rise of electric energy demand in Indonesia cause the increase of power plants
developments, in particular for coal power plant. XYZ power plant is one of coal
power plants and it is the biggest plant in Indonesia. In addition to positive benefits
of power plants for the infrastucture development in Indonesia, coal power plant
might also has negative impacts for environment, typically for air pollution like gas
emissions of SO2 (Sulfur Dioxide). While, in Indonesia, especially in XYZ plant,
there is no optimum SO2 controller yet. The concentration of SO2 in the gas emitted
from boiler unit 7th in XYZ plant has reach 3.999 mg/Nm3. This value exceed the
quality standard in Regulation of the Minister of Environment No. 21 of 2008, that
is 750 mg/Nm3. Therefore, to control the quite high emissions of SO2, the
requirement of planning FGD (Flue Gas Desulphurization) is important. The
system of FGD is lime scrubbing, consist of lime processing (lime bunker, grinding
mill, and lime slurry tank), SO2 scrubbing (packed column), effluent hold tank,
gypsum centrifuge, also wastewater treatment (thickener) and belt filter press as
dewatering unit. The designing procedur resulting the dimensions of the packed
column, that is diameter of 7 m and height of 11 m with 25 nozzles, vane mist
eliminator and using Raschig-rings 2 inch as packing material. The design of
effluent hold tank has width dimension of 7 m and depth dimension of 2,5 m. Lime
requirement to reduce SO2 concentration is 389 kg/day. This system will consume
about 14.860 kW of electricity. This air pollution control is expected to be 81,25%
of SO2 removal, where the emissions concentration from power plant is compared
with the quality standard. |
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