DESIGN OPTIMIZATION OF LARGE-SCALE PYROLYSIS REACTOR FOR NON-RECYCLED PLASTIC WASTE PROCESSING
<p align="justify">About 17% of the national waste generation is plastic waste, and 65% comes from the food and beverage packaging. This type of plastic waste generally consists of several layers of plastic in the form of PP, PE and PET types which are difficult to recycle. The pyrol...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/70297 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | <p align="justify">About 17% of the national waste generation is plastic waste, and 65% comes from the food and beverage packaging. This type of plastic waste generally consists of several layers of plastic in the form of PP, PE and PET types which are difficult to recycle. The pyrolysis process that converts plastic into oil can be a solution in processing this type of plastic waste, but its application on a large scale has not yet been developed in Indonesia. Many studies have been conducted on the topic of pyrolysis, but only a few have carried out optimization of large-scale reactor designs that are energy-sustainable and economically viable.
Optimization of the pyrolysis device design was carried out based on the minimum energy and material requirements consideration at a certain daily capacity. Preliminary tests were carried out to obtain the pyrolysis operating conditions that produce the most oil, namely at 500 ?. The calculation results showed that the optimum processing capacity from the calculation of the total duration of the process, minimum energy loss, and minimum construction material requirements, is 4.2 tons per day with the recommended ratio of length and diameter of the reactor (L/D) is 1.
The final evaluation of the energy sustainability and economic potential was based on the optimized reactor model. All the tested scenarios of using PP, PE, multi-layer and mixed plastic waste types show that the design could achieve energy sustainability and produce excess oil that has a selling value. Based on these findings, the highest profit obtained for the scenario of fully utilizing CH4 in re-combustion by using non-recycled plastic mixture composition reached Rp. 119,977,443.00 per month at a capacity of 4.2 tons per day.
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