A method for producing a coke includes performing dry distillation of a mixture. The mixture includes: an ashless coal; an oxidized ashless coal obtained by an oxidation treatment of an ashless coal; and a raw petroleum coke. Relative to 100 parts by mass of a total of the ashless coal, the oxidized ashless coal and the raw petroleum coke, a content of the ashless coal is from 5 to 40 parts by mass, and a total content of the ashless coal and the oxidized ashless coal is from 30 to 70 parts by mass.

A method for producing a coke includes performing dry distillation of a mixture. The mixture includes: an ashless coal; an oxidized ashless coal obtained by an oxidation treatment of an ashless coal; and a raw petroleum coke. Relative to 100 parts by mass of a total of the ashless coal, the oxidized ashless coal and the raw petroleum coke, a content of the ashless coal is from 5 to 40 parts by mass, and a total content of the ashless coal and the oxidized ashless coal is from 30 to 70 parts by mass.

Pressure vessels containing a charge are preheated at pressure of 2 to 5 kPa with liquid heat carrier to maximally 120 C. They are afterheated in another place to maximally 550 C. The pressure vessels are continually added and/or replaced and generated gasses are continuously drawn off, cooled to maximally 60 C. and separated oily condensate. Residual gasses and solid residues are burned after treatment in a cogeneration unit.

Pressure vessels containing a charge are preheated at pressure of 2 to 5 kPa with liquid heat carrier to maximally 120 C. They are afterheated in another place to maximally 550 C. The pressure vessels are continually added and/or replaced and generated gasses are continuously drawn off, cooled to maximally 60 C. and separated oily condensate. Residual gasses and solid residues are burned after treatment in a cogeneration unit.

Carbon negative emission methods, a nitrogen oxide ultra-low emission system, an air supply device and a flow control module. The system for use in carbon negative emission methods enables biomass to produce inorganic carbon and pyrolysis gas/gasification gas to realize negative emission of carbon. The nitrogen oxide ultra-low emission system enables fuel to be in mixed combustion with the pyrolysis gas/gasification gas to remove nitrogen oxides, which realizes ultra-low emission of the nitrogen oxides. The air supply device is in communication with a biomass pyrolysis coupling partial gasification and is in communication with the system for use in carbon negative emission methods and the nitrogen oxide ultra-low emission system. The pyrolysis gas/gasification gas enters the nitrogen oxide ultra-low emission system. The flow control module controls a flow ratio of a pyrolysis agent/gasification agent entering the system for use in carbon negative emission methods and flow of the pyrolysis gas/gasification gas and air entering the nitrogen oxide ultra-low emission system.