Cradle to Gate
Identity ID
7efcf46b-ffa5-4581-834c-171a1ee71192
Materials
Associated ID
f0cb6775-207a-403c-a898-7580abcbf348
Included activities starts
Included activities ends
Description
Hydrogen can be used in the production of ammonia, hydrocracking and hydrodesulfurization processes, methanol, acetaldehyde, and other industrial chemicals; this dataset includes primary raw materials, auxiliary materials, energy inputs, and waste outputs from the production process, while infrastructure such as production equipment and facility construction are excluded from the system boundary of the dataset; the life cycle inventory is derived from literature; the production process of 1,3-butadiene involves steps including raw material preparation, dehydrogenation and dehydration reactions, catalyst selection, catalytic reactions, and product separation and purification, with hydrogen being a by-product of this process.
Activity Description
The production activities of this product include raw material preparation, dehydrogenation and dehydration reactions, catalyst selection, catalytic reactions, product separation and purification processes, with hydrogen being a by-product of this process.
Process Description
Hydrogen is an inorganic gas with the CAS number 1333-74-0. It is named "hydrogen" under IUPAC nomenclature, and its molecular formula is H2. Under normal temperature and pressure conditions, hydrogen is a colorless, odorless gas with very high energy density. In industrial and laboratory settings, hydrogen is modeled as a pure substance, although in practical applications, it may appear in various levels of purity, and its storage and transportation conditions may need to be considered in the model. At the consumer level, hydrogen is used in the following products: 1. Clean energy: as an energy source for fuel cells and certain types of vehicles; 2. Welding and cutting: In the metalworking industry, hydrogen is used as a shielding gas to prevent oxidation during the welding process. 3. Food processing: In certain food packaging applications, hydrogen is used to control the atmosphere and extend the shelf life of products. In industrial settings, hydrogen is used to manufacture products in the following industries: 1. Ammonia and fertilizers: Hydrogen is a key raw material in ammonia production, which is further used to manufacture fertilizers; 2. Petroleum refining: In petroleum refining, hydrogen is used in hydrocracking and hydrodesulfurization processes to improve fuel quality and performance; 3. Chemicals: Hydrogen is used in the production of various chemicals, including methanol, acetaldehyde, and other industrial chemicals.
Time period
2020
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The one-step ethanol method for preparing 1,3-butadiene uses ethanol as a raw material, which reacts in a reactor under the action of a catalyst at a certain temperature to produce butadiene in a single step. The chemical reaction is as follows: 2 C2H6O -> C4H6 + 2H2O + H2. Based on the chemical reaction, the molar yield of 1,3-butadiene from 1 kg of ethanol is 0.587 kg. In practice, the yield of 1,3-butadiene is lower than the stoichiometric yield due to the formation of by-products such as diethyl ether, ethylene, n-butanol, butenes, and heavy products (C6+).