Process information
| Key Data Set Information | |
| Location | MY |
| Geographical representativeness description | The material and energy consumption is based on global or European data. For the supply of energy and intermediate products Malaysian specific boundary conditions are used. |
| Reference year | 2005 |
| Name |
Base name
; Treatment, standards, routes
; Mix and location types
Adipic acid; from cyclohexane; production mix, at factory
|
| Use advice for data set | The data set represents a cradle to gate inventory. It can be used to characterise the supply chain situation of the respective commodity in a representative manner. Combination with individual unit processes using this commodity enables the generation of user-specific (product) LCAs. |
| Technical purpose of product or process | Adipic acid as an intermediate to produce e.g. nylon. |
| Classification |
Class name
:
Hierarchy level
|
| General comment on data set | The data set covers all relevant process steps / technologies over the supply chain of the represented cradle to gate inventory with a good overall data quality. The inventory is mainly based on industry data and is completed, where necessary, by secondary data. |
| Copyright | Yes |
| Owner of data set | |
| Quantitative reference | |
| Reference flow(s) | |
| Time representativeness | |
| Data set valid until | 2012 |
| Time representativeness description | Annual average |
| Technological representativeness | |
| Technology description including background system | Cyclohexane is oxidised to cyclohexylperoxide in a liquid-phase reaction with cobalt naphthenate as catalyst. In a peroxide converter the product is converted to a mixture of cyclohexanone and cyclohecanol (ketone alcohol oil = KA oil). It is washed with caustic soda and then treated with sulphuric acid to recover carboxylic acids as byproducts. Unreacted cyclohexane is distilled off and recycled. The KA oil is purified by evaporation and then oxidised with nitric acid at 70 °C and 1 atm to adipic acid. Nitric acid is partially recycled while crude adipic acid is purified by crystallization, centrifuging and washing. The background system is addressed as follows: Electricity, Thermal energy: The electricity (and thermal energy as by-product) used is modelled according to the individual country-specific situation. The country-specific modelling is achieved on multiple levels. Firstly the individual power plants in service are modelled according to the current national grid. This includes net losses and imported electricity. Second, the national emission and efficiency standards of the power plants are modelled. Third, the country-specific fuel supply (share of resources used, by import and / or domestic supply) including the country-specific properties (e.g. element and energy contents) are accounted for. Fourth, the import, transport, mining and exploration processes for the energy carrier supply chain are modelled according to the specific situation of each power-producing country. The different mining and exploration techniques (emissions and efficiencies) in the different exploration countries are accounted for according to current engineering knowledge and information. Steam: The steam supply is modelled according to the individual country-specific situation with regard to the technology efficiencies and energy carriers used. Efficiencies range from 84% to 94% in relation to the representative energy carrier (gas, oil, coal). Coal, crude oil and natural gas used for the generation of steam are modelled according to the specific import situation (see electricity). Transports: All relevant and known transport processes used are included. Overseas transport including rail and truck transport to and from major ports for imported bulk resources are included. Furthermore all relevant and known pipeline and / or tanker transport of gases and oil imports are included. Energy carriers: Coal, crude oil, natural gas and uranium are modelled according to the specific import situation (see electricity). Refinery products: Diesel, gasoline, technical gases, fuel oils, basic oils and residues such as bitumen are modelled via a country-specific, refinery parameterized model. The refinery model represents the current national standard in refinery techniques (e.g. emission level, internal energy consumption,...) as well as the individual country-specific product output spectrum, which can be quite different from country to country. Hence the refinery products used show the individual country-specific use of resources. The supply of crude oil is modelled, again, according to the country-specific crude oil situation with the respective properties of the resources. |
| Included data sets | |
| Flow diagram(s) or picture(s) | |
Modelling and validation
Administrative information
Inputs and Outputs