T/ZGZS 0802-2022 Recycled plastics - Calculation of carbon emission from physical recovery
1 Scope
This document specifies the calculation requirements, calculation procedures, system boundaries, data collection, carbon emission calculation and reporting contents for the physical recycling carbon emissions of recycled plastics.
This document is applicable to the calculation of carbon emissions from the physical recycling of recycled plastics based on the life cycle methodology.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 24050 Environmental management - Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 24050 and the following apply.
3.1
waste plastics
all kinds of discarded plastic products and materials, including scraps, offcuts and defective products generated during the production and processing of plastic raw materials and plastic products
[Source: GB/T 37821-2019, 3.1]
3.2
physical recycling
a recycling method that does not damage the polymer structure of plastics but directly uses waste plastics for molding processing after sorting, cleaning, crushing, melting and granulation
3.3
recycled plastic product
plastics processed from waste plastics and used for their original purposes or other uses
Note: In this document, it refers to recycled raw materials processed through physical recycling methods, such as recycled plastic particles and recycled plastic powders. Recycled plastics may be mixed with or without virgin resins, fillers, plasticizers, stabilizers, pigments, etc.
3.4
greenhouse gas; GHG
gaseous constituent of the atmosphere, both natural and anthropogenic, that absorbs and emits radiation at specific wavelengths within the spectrum of infrared radiation emitted by the Earth's surface, the atmosphere and clouds
Note: Unless otherwise specified, GHG in this document includes carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFC5), perfluorocarbons (PFC5), sulfur hexafluoride (SF6), and nitrogen trifluoride (NF3).
[Source: GB/T 32150-2015, 3.1]
3.5
greenhouse gas source
physical units or processes that emit GHG into the atmospheric environment
[Source: GB/T 32150-2015, 3.5, modified]
3.6
greenhouse gas emission
total amount of GHG released into the atmosphere within a specific period (calculated in mass unit)
[Source: GB/T 32150-2015, 3.6]
3.7
carbon emission
greenhouse gas emissions from all greenhouse gas sources within the entire system boundary
3.8
carbon dioxide equivalent
unit for comparing the radiative forcing of a greenhouse gas to carbon dioxide
Note: The carbon dioxide equivalent is calculated using the mass of a given GHG multiplied by its global warming potential. The unit is usually kg CO2 eq.
[Source: GB/T 32150-2015, 3.16, modified]
3.9
direct emission
emissions into the atmosphere, soil and water bodies resulting from emission sources directly controlled or owned by enterprises
3.10
indirect emission
emissions from outsourced energy for self-use by enterprises and from the upstream and downstream of the value chain
Note: In this document, the energy outsourced by enterprises refers to electricity, steam, heating and cooling, etc. Emissions from the upstream and downstream of the value chain refer to those generated from the production of raw materials, raw material extraction, manufacturing and processing, as well as the transportation of raw materials with suppliers.
3.11
life cycle
series of consecutive stages in the recycled plastic product system, from collection to recycling and all the way to leaving the factory
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Calculation requirements
5 Calculation procedures
6 System boundary
7 Data collection
8 Carbon emission calculation
9 Report content
10 Calculation report release
Annex A (Informative) Industry average reference values of typical virgin resin carbon emission factors
Annex B (Informative) Carbon emission calculation report for physical recycling of recycled plastics
Bibliography
