ICNEA 2521—Coking

Where 2521 sits

1. C Manufacturing industry
2. 25 Petroleum, coal and other fuel processing industries
3. 252 Coal processing
4. 2521 Coking

What 2521 includes

• Includes the following coking activities：
• Coal-to-coke, petroleum coke (coke), bituminous coke, and other raw materials for the production of coke
• Machine coke, type coke, soil coke, semi-coke, needle coke, and other processes produce coke
• Mineral tar: coal tar, other mineral tar
• Comprehensive utilization of waste gas in coking enterprises
• Refers to the operating activities of coke ovens that mainly produce coke, retorted charcoal, and by-products such as coal tar or asphalt from hard coal and lignite.

What 2521 excludes

• Activities that independently use coal tar as raw material for hydrofining and conversion are included in 2519 (other crude oil manufacturing)

2521 in other systems