Cradle to Consumer
Identity ID
e4fd66b0-18e7-43d2-97a0-5461c2f1b60a
Materials
Associated ID
9ed07f83-2fb7-48cf-91bb-6d5d394eaae5
Included activities starts
Included activities ends
Description
This dataset is a market dataset, representing the consumption market of the region; the dataset includes the transport of the product from the gate to the consumer end, and the transport service is calculated according to the transport situation of this product in this region. Adipic acid is mainly used to synthesise polyamides (such as nylon 66), ester plasticisers and polyurethanes, and is also used to prepare food additives, pharmaceutical intermediates, lubricants and adhesives. Adipic acid is modelled as a pure substance; when modelling this substance the user needs to add a solvent of their choice in the model; the dataset contains the main raw and auxiliary materials, energy, waste and atmospheric emissions of the production process, in which the preliminary treatment of wastewater in the auxiliary units and the waste gas treatment process are included within the dataset boundary, and infrastructure such as the manufacture of production equipment and the construction of plant buildings is not included within the dataset boundary; the data inventory is formed by merging data from multiple sources; the production activities of this product include the preparation of a mixture of cyclohexanone and cyclohexanol from cyclohexane, nitric acid oxidation, refining and purification, and tail gas incineration.
Activity Description
The production activities of this product include the preparation of a mixture of cyclohexanone and cyclohexanol from cyclohexane, nitric acid oxidation, refining and purification, and tail gas incineration.
Process Description
The chemical formula of adipic acid (ADA for short) is C6H10O4, CAS number 124-04-9. It is a white crystalline powder or crystalline solid under normal temperature and pressure. It is odorless and tasteless, with a melting point of about 153°C and a boiling point of about 338.5°C. It easily sublimates when heated, is flammable and does not produce irritating gases when burned. Slightly soluble in cold water (solubility at 20°C is about 1.44g/100mL water), easily soluble in hot water, ethanol, ether, acetone, cyclohexanone and other organic solvents, slightly soluble in benzene and petroleum ether; chemically stable, with the typical characteristics of saturated dicarboxylic acids, it can undergo esterification reactions with alcohols, amidation reactions with amines, and can participate in polycondensation reactions to form polyesters and polyamides. It has mild acidity and strong chemical inertness. Adipic acid is mainly used in polyamide synthesis, and can be condensed with ethylenediamine to produce high-end engineering plastic nylon 66, and is also used to synthesize a variety of ester plasticizers. In addition, adipic acid is also used in the polyurethane industry and fine chemical industry to prepare food additives, pharmaceutical intermediates, lubricants, and adhesives. It can also be used as an organic acid chelating agent for electroplating, water treatment, etc.
Time period
2015
2026
Geography
China,Gansu
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The cyclohexane oxidation method is the leading technology for adipic acid production. It is produced through air oxidation and nitric acid oxidation of cyclohexane. The process is mature and highly scalable, accounting for more than 90% of the national total adipic acid production. This dataset represents the mainstream technology: first, an intermediate mixture of cyclohexanone and cyclohexanol is produced from cyclohexane, and then nitric acid or air oxidation of KA oil is performed. The nitric acid oxidation method of KA oil generally uses an excess of nitric acid with a concentration of 50-60 wt% and is carried out through two-stage reactors in series. The catalyst used in the reaction is a copper-vanadium series (copper 0.1-0.5 wt%, vanadium 0.1-0.2 wt%), with a temperature of 60-80°C and a pressure of 0.1-0.4 MPa. After the KA oil oxidation product is distilled to remove nitric acid, it is then refined through two-stage crystallization to obtain high-purity adipic acid. The exhaust gas from the nitrogen dioxide absorption tower enters the incinerator for incineration.