Recycling
PET benefits the environment by reducing the amount of waste
in landfills and benefits the PET processor by cost savings
in raw material. Furthermore, the energy required in reclaiming
post consumer PET is lower than that of producing virgin PET
from petroleum. The primary sources for recycled PET are textile
waste and soft drink bottle scrap. The sorted, cleaned and
ground wastes are of a low bulk density with poor material
handling characteristics.
Versatility of our mechanically agitated lines as well as
the diversity of what we are capable of supplying has helped
us find technically and economically feasible solutions to
the needs of the recycler.
We design and build our own equipment, and constantly work
to improve existing designs while developing new ones altogether
in order to meet our customer's unique requirements.
The applications of particular interest to the recycler are
given below:
Crystallizing/Drying
The cleaned and ground bottle flakes or the compacted textile
waste are crystallized and dried prior to extrusion for spinning
textile fiber, strapping, film, and injection molding articles
or solid state polymerizing. Bepex offers unique equipment
and process technology solutions which are well proven, reliable
and cost effective in this application. Process capacities
can range from 25 kg/hr to 5,000 kg/hr.
Solid State Polymerizing
Solid State Polymerizing (SSP) consists of a series of processing steps including holding
the chips at reaction temperatures and time periods to achieve
the required increase in molecular weight in a reactor. Molecular
weight (Mn) increases in the industry range from 2,000 to
20,000 and capacities range from 25 kg/hr to 5,000 kg/hr.
Bepex offers specially designed reactors that provide plug-flow
material handling combined with uniform gas distribution that
is unmatched in the industry.
Gas Purification
Drying as well as solid state polymerizing recycled PET requires
hot gas low in particulate matter, moisture and volatile organics.
Since nitrogen is used in many instances, purifying and recycling
the process gas is essential from the viewpoint of process
economics and environmental protection. Bepex offers three
types of gas purifications systems with capacities ranging
from 500 Nm3/hr to 15,000 Nm3/hr. |
