Cradle to Consumer
Identity ID
255bee1f-e869-49c7-9dff-5c1b659ed7b1
Materials
Associated ID
e349ffd7-31ec-41c9-80dc-5b8c1ee41979
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 consumption end, and the transport service is calculated based on the transport situation of the product in the region. Stearic acid is mainly used to produce stearates, widely used in the manufacture of cosmetics, cold-resistant plasticizers for plastics, release agents, stabilizers, surfactants, rubber vulcanization accelerators, waterproofing agents, polishing agents, metal soaps, metal mineral flotation agents, softeners, pharmaceuticals and other organic chemicals. In addition, it can also be used as a solvent for oil-soluble pigments, a crayon lubricant, a wax paper polishing agent, an emulsifier for glyceryl stearate, etc. Stearic acid is industrially produced by the oil hydrolysis process. This dataset includes the main raw and auxiliary materials, energy use, emissions and waste treatment of the production process, excluding infrastructure such as production equipment manufacturing and plant construction; the data inventory is formed by merging data from multiple sources; the process flow of producing stearic acid by the oil hydrolysis process includes acid oil washing and impurity removal, hydrolysis, dehydration, vacuum distillation separation, fractionation, distillation purification and other process steps.
Activity Description
The technological process of producing stearic acid by oil hydrolysis includes acidification, water washing and impurity removal, hydrolysis, dehydration, vacuum distillation and separation, fractionation, distillation and purification.
Process Description
Pure stearic acid is a shiny white leaf-like solid. It has a melting point of 69.6°C, boiling points of 376.1°C (decomposition) and 232°C (at 2.0 kPa), a relative density (20/4°C) of 0.9408, and a refractive index of 1.4299 (80°C). It evaporates slowly at 90–100°C. It is almost insoluble in water (0.00029 g dissolves in 100 mL of water at 20°C), soluble in alcohol and acetone, and easily soluble in ether, chloroform, benzene, carbon tetrachloride, carbon disulfide, amyl acetate, toluene, etc.
Time period
2012
2026
Geography
China,Hainan
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The hydrolysis process of this project adopts a high-pressure countercurrent catalyst-free continuous hydrolysis method. The principle of this method is: oil is added at the bottom of the hydrolysis tower. During the process of rising to the top of the hydrolysis tower, triglycerides are hydrolyzed into fatty acids and glycerol by excess process water from top to bottom in countercurrent flow. The oil and process water can reach a high hydrolysis rate of 98%-100% through countercurrent flow. The raw materials required for production are obtained from kitchen waste recycling and processing companies.