Additional byproducts of the coking are coal tar pitch, ammonia (NH3), hydrogen sulphide (H2S), pyridine, hydrogen cyanide and carbon based material. Some facilities have "by-product" coking ovens in which the volatile decomposition products are collected, purified and separated for use in other industries, as fuel or chemical feedstocks. Otherwise the volatile byproducts are burned to heat the coking ovens. This is an older method, but is still being used for new construction.
additional byproducts of the coking are coal tar pitch ammonia (nh3) hydrogen sulphide (h2s) pyridine hydrogen cyanide and carbon based material some facilities have "by-product" coking ovens in which the volatile decomposition products are collected purified and separated for use in other industries as fuel or chemical feedstocks otherwise the volatile byproducts are burned to heat the coking ovens this is an older method but is still being used for new construction