Cradle to Consumer
Identity ID
9dc750d4-8bb1-4ee2-88f1-db8a55f614f8
Materials
Associated ID
d4db6075-47b1-48a1-bb38-08dd9eff4a7f
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. Phosphoric acid is widely used in agricultural fertilizers, industrial treatment, the food industry, pharmaceuticals and detergents, coatings, ceramic production and other fields; phosphoric acid is modeled as a pure substance; industrially, this product is mostly used in the form of an 85% solution, and when modeling this substance the user needs to add a solvent of their choice in the model; to reach industrial grade, solvent extraction purification is used to remove impurities from fertilizer-grade phosphoric acid; this dataset includes the main raw and auxiliary materials, energy, waste and air emissions of the production process, and infrastructure such as production equipment manufacturing and plant construction is not included within the dataset boundary; the data inventory is formed by merging data from multiple sources; the production activity of this product includes pretreatment, extraction, washing, back-extraction, concentration, deheavying and decolorization and other process steps. Raffinate phosphoric acid is a by-product of this production process.
Activity Description
The production activities of this product include pretreatment, extraction, washing, back-extraction, concentration, heavy-ends removal and decolorization and other processes.
Process Description
The chemical formula of phosphoric acid is H3PO4, CAS number 7664-38-2. The pure product is colorless and transparent orthorhombic crystals. The industrial grade is mostly colorless and viscous liquid, odorless and slightly sour. It is easily soluble in water and miscible with ethanol. The aqueous solution is weakly acidic. When heated to 213°C, it will lose water and form pyrophosphoric acid, and further heating will form metaphosphoric acid. It has stable chemical properties and is not easy to decompose. It is a ternary medium-strong acid that can react with alkali to form normal salts and acid salts (such as potassium dihydrogen phosphate and diammonium hydrogen phosphate). Phosphoric acid is widely used in agriculture (producing high-efficiency phosphate fertilizers such as diammonium phosphate and monoammonium phosphate), industry (metal surface phosphating treatment for rust prevention, electroplating solution preparation, detergent production), food industry (as sour agent, nutritional enhancer), pharmaceutical field (preparation of phosphate drugs) and detergents, coatings, ceramics and other industries. This process is to obtain industrial grade phosphoric acid by purifying wet phosphoric acid through solvent extraction.
Time period
2022
2026
Geography
China,Chongqing
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Solvent extraction purification of wet-process phosphoric acid is an advanced upgrade technology that enables deep purification of wet-process phosphoric acid. It is the most common process for removing impurities and purifying fertilizer-grade phosphoric acid. Specifically: the raw phosphoric acid is preheated, then phosphate slurry is added for desulfurization, sodium hydroxide solution is added for defluorination, and a flocculant is used for sedimentation to obtain pretreated acid. Subsequently, purified phosphoric acid is obtained through extraction, washing, and back-extraction steps. Finally, it is concentrated to 85% concentration, and deweighting and decolorization are performed, while the raffinate acid is concentrated to produce raffinate phosphoric acid.