Cradle to Gate
Identity ID
377bf689-3b5b-4092-8097-3e6dd9ee01bb
Materials
Associated ID
a0f8e5f6-b6ac-488c-bde8-f5326aa25658
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 major raw materials, energy, and waste from the production process, while infrastructure such as production equipment and facility construction is not included within the system boundary of the dataset; the life cycle inventory data were sourced from literature; the 1,3-butadiene production process involves steps including raw material preparation, dehydration reaction, catalyst selection, coupling reaction, 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, dehydration reaction, catalyst selection, coupling reaction, product separation and purification, among which hydrogen is a by-product of the process.
Process Description
Hydrogen is an inorganic gas with the CAS number 1333-74-0. It is known as "hydrogen" under IUPAC nomenclature, with the molecular formula H2. Under normal temperature and pressure conditions, hydrogen is a colorless, odorless gas with extremely high energy density. 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 metal processing industry, hydrogen is used as a shielding gas to prevent oxidation during welding; 3. Food processing: In certain food packaging, hydrogen is used to control the atmosphere in order to extend the shelf life of products. In industrial settings, hydrogen is utilized in manufacturing products for the following industries: 1. Ammonia and fertilizers: Hydrogen is a key feedstock 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 two-step ethanol method for preparing 1,3-butadiene was developed based on the one-step method. First, in one reactor, ethanol is dehydrogenated to form acetaldehyde under the catalysis of a basic catalyst (such as a copper-based catalyst); then, in another reactor, acetaldehyde reacts with ethanol to produce butadiene. The chemical reactions are as follows:
C2H6O -> C2H4O + H2
C2H6O + C2H4O -> C4H6 + 2H2O