High-efficiency clean burning method and device of macromolecular substance

A high-efficiency clean burning method of a macromolecular substance, characterized in that the method comprises the steps of:

• (1), adding a certain amount of biomass carbon residue to a first combustion air to carry out anoxic combustion below the theoretical oxygen demand, so as to generate a first gaseous substance, fly ashes and a carbon residue layer, wherein the first gaseous substance mainly comprises carbon monoxide, hydrogen and nitrogen;
• the first gaseous substance and the fly ashes are in an electronic excited state;
• (2), leading the heat generated by anoxic combustion to the macromolecular substance, preheating and drying the macromolecular substance, separating a part of water to increase the reaction temperature and promote pyrolysis gasification, so as to generate a second gaseous substance and carbon residue, wherein the second gaseous substance comprises “dioxin” and/or other “tar” macromolecular substances, a part of micromolecular combustible gas and a small amount of water vapor;
• (3), taking carbon residue of the carbon residue layer as a pyrolysis catalyst, leading the second gaseous substance to the red-hot carbon residue layer to carry out oxygen catalytic cracking, so as to generate a third gaseous substance and fly ashes, wherein the third gaseous substance does not contain “dioxin” and/or other “tar” macromolecular substances, but contains a certain amount of micromolecular hydrocarbon, carbon monoxide, hydrogen, nitrogen and a part of organic micromolecular free radicals;
• the third gaseous substance and the fly ashes are in the electronic excited state;
• (4), merging and mixing the third gaseous substance and the fly ashes in the electronic excited state in the step (3) with the first gaseous substance and the fly ashes in the step (1), and leading into an oxygen-enriched combustion zone in a heat preservation manner;
• adding a second combustion air above the theoretical oxygen demand to carry out oxygen-enriched combustion or simultaneously carry out heat recovery;
• or merging and mixing the third gaseous substance and the fly ashes in the step (3) with the first gaseous substance and the fly ashes in the step (1), leading into the oxygen-enriched combustion zone in the heat preservation manner after dust removal in the heat preservation manner, adding the second combustion air above the theoretical oxygen demand to carry out oxygen-enriched combustion or simultaneously carry out heat recovery, so as to control the temperature of a combustion product above melting points of the fly ashes, or control the temperature of the combustion product above the melting points of the fly ashes and below the generation temperature of a thermal nitrogen oxides NOx, thereby generating a slag and a fourth gaseous substance, wherein the fourth gaseous substance is also in the electronic excited state;
• the first gaseous substance and the third gaseous substance are completely burnt;
• (5), directly discharging the fourth gaseous substance into the atmosphere or discharging the fourth gaseous substance into the atmosphere after washing and purifying and/or heat recovery.