This is a PET bottle-to-bottle
project in Indonesia invested by a French leading environmental group which is a
benchmarking enterprise in the field of global resource optimization management.
This group focus on waste recycling, water treatment and energy industries, its
business scope covers on five continents. BoReTech was responsible for PET
bottle recycling equipment and engineering service supply, including the whole plant
design, installation and commissioning guidance in this PET Bottle to Bottle Recycling project. The input capacity of this food-grade PET bottle recycling line is
designed with 4.5 tons/h and output designed capacity is 3.2 tons/h. Extrusion
section and SSP of this project are supplied by EREMA and Buhler. The final
product is food-grade PET chips, which are supplied to Danone Group for PET bottle
The project was launched
in October, 2018 and delivered to customers for production in February 2020. The layout of PET
bottle recycling line occupied about 2,500㎡.
As available plant area
is limited, BoReTech finally decided to adopt a compact layout design after
several technology meetings with customer. The compact process layout can achieve
the purpose of complete washing and auxiliary functions, and the reasonable layout is
convenient for daily maintenance.
The washing process
design is mainly aimed at the bottle bale in Indonesia, which labels are
usually removed by manual firstly. However, considering the various quality of PET
bottle bales, the label separation function is designed as an optional device
standby to cope with bottles with PVC labels. Though adjust the speeding of the
weighting belt conveyor to control the PET bottle bales input capacity, real-time
monitoring and automatic adjustment of the feeding speed of chain conveyor to
realize operation automation. Meanwhile, the output capacity is monitored in
real time to ensure the production efficiency of rPET flakes. Equipped with
multiple metal separation device, the metal impurities are automatically
removed and collected inline. PET bottle washing line is also equipped with automatic
bottle sorting machine, automatic flake sorting machine and flakes oversize sieving device. Through the detection of PET flakes, the oversize flakes will be
crushed for a second times. The small size flakes are collected through the
dust removal system to ensure the productivity of rPET flakes and reach
food-grade PET flakes quality requirement. The dust removal system realizes a high
automation of PET bottle recycling, and provides a clean and hygienic
environment for employees in the workshop.
detergent dosing system and inline water saving system can filter and recycle
the chemical water. After online 3 steps filtration, the PET flakes and chemical
are completely separated to realize water recycling and reuse inline. At the
same time, it helps customers save 1kg chemical cost of PET flakes per ton output
and reduce 100kg/h steam consumption.
control design adopts SCADA system which independently developed by BoReTech.
PLC combined with computer can achieve remote control. The real-time production
situation of washing line can be checked and monitored in front of computer,
and the PET bottle washing line operation can be controlled directly by remote. Meanwhile, it has
functions such as equipment maintenance guidance and production report
In addition, the
safety specifications design of wire and cable, pipeline, and platform are fully
in accordance with European standards, international standards and models of
equipment spare parts configuration, which is convenient for equipment daily maintenance