Cradle to Gate
Identity ID
027f9c76-da57-4a58-8df3-e48ea9449997
Materials
Associated ID
e3b2c09d-2642-4b12-a126-413577c76f81
Included activities starts
Included activities ends
Description
Carbon black is mainly used in fields such as rubber, plastics, coatings, inks, paper and electrode materials. Carbon black 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 carbon black reaction, waste heat utilisation, carbon black collection, granulation, drying and tail gas combustion. Steam is a by-product of this production process.
Activity Description
The production activities of this product include carbon black reaction, waste heat utilization, carbon black collection, granulation, drying, exhaust gas combustion and other processes.
Process Description
Carbon black is an amorphous carbon powder produced by incomplete combustion or thermal cracking of hydrocarbon compounds (such as natural gas and petroleum fractions). CAS No. 1333-86-4. It appears as black loose powder or particles. It is light in weight, has a large specific surface area, and has good adsorption, conductivity and reinforcing properties. It is insoluble in water, acid, alkali and most organic solvents, has stable chemical properties, is resistant to high temperature, acid and alkali, and oxidation. It is not prone to chemical reactions at room temperature and has excellent compatibility with polymer materials such as rubber, plastics, and coatings. Industrially, it is mainly used in the rubber industry (as a core reinforcing agent) and plastic processing (as a colorant, antistatic agent and UV stabilizer); it is also used in the coating, ink and papermaking industries. It can also be used to prepare sealants, waterproof materials, electrode materials, etc. It is especially suitable for material systems that require reinforcement, coloring, and conductivity.
Time period
2020
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Carbon black production from coal tar is the traditional mainstream technology for carbon black production. It is produced by cracking and carbonizing coal tar at high temperatures. The process is mature and low-cost. It accounts for more than 80% of the total carbon black production in the country. This data set represents the mainstream technology: using carbon black oil, coal tar and anthracene oil as raw materials. Carbon black production mainly includes carbon black reaction, waste heat utilization, carbon black collection, drying and other processes:
1. Carbon black reaction: After the raw oil is filtered by the raw oil filter and the oil residue is filtered, the raw oil is pumped to the raw oil preheater to preheat to 280°C, and then radially sprayed into the throat section of the reactor through the raw oil nozzle. After mixing with the high-temperature combustion airflow of 2000°C, it rapidly cracks and generates carbon black.
2. Waste heat utilization: Waste heat boilers produce steam and part of it is recycled for production.
3. Carbon black collection: The carbon black flue gas cooled to 288°C enters the main bag filter and falls into the main bag filter storage hopper. The carbon black collected by the main bag filter enters the air supply system through the air-tight valve of the main bag filter.
4. Particle crushing: After the carbon black enters the air conveying system, it is transported by air to crush the impurities through the particle crusher, and then sent to the collection bag filter through the conveying fan. The carbon black is collected into the powdered carbon black storage tank. The exhaust gas from the collection bag filter is sent to the tail gas combustion furnace through the exhaust gas recirculation fan to be burned and used as drying gas for the dryer.