Page 167 - Materials Chemistry, Second Edition

3.7 Illustration of the Inventory Phase by an Example 151

Material/product Data basis

Cement plant Recover of remainders and mixed plastics in the cement plant was
implemented in the system model as a simultaneous incineration
process. It was assumed that the used mixed plastics replace hard coal
during the burning process. The database consists of confidential data
from the cement industry
Blast furnace The blast furnace process was converted in the system model based on
confidential data of the steel industry. It was assumed that used mixed
plastics in the blast furnace replace heavy fuel oil as reducing agents
Raw material A smaller part of the mixed plastics was used as raw material in the
recovery (plastic secondary raw material utilisation centre SVZ in Cottbus. The
c
b
gasification to assessment was done on basis of UBA and IVV -Data.Asproduct
methanol) methanol is obtained, with a credit entry for the production of
methanol from mineral oil
Waste Non-used PET bottles are disposed. Here, a waste incineration is
incineration assumed (MSWI). The waste incineration model applies to a technical
(MSWI) standard of the European Union guideline (European Union Incineration
Directive – Council Directive 2000/76/EC). In the model a grate-firing
with steam turbine followed by purification of exhaust gas is put as the
basis. The energy contained in the waste can partly be recovered (here
10% as electricity and 30% as thermal energy)
The database consists of confidential data from the waste incineration
plants

a
IFEU, 2004b.
b UBA, 2000b.
c
IVV, 2001.
3.7.2.6 Recycling of Transport Packagings
The following databases were considered in the unit processes (unit process MWIP,
see above):

Material/product Data basis

Material Used PE transportation packaging is cleaned and shred/milled
recovery: PE afterwards. The PE granulate is reused in plastics industry again and
granulate replaces new PE granulates. The databases of (Plinke et al., 2000, loc. cit)
were taken
Material Used corrugated cardboard transportation packaging is sorted and
recovery: reused in the production of waste paper-based corrugated base paper.
corrugated The databases for the waste paper sorting of (Plinke et al., 2000, loc. cit)
cardboard were taken