Waste active carbon doped blending coal for coking, and coking method thereof

Abstract

The invention discloses a waste active carbon doped blending coal for coking. The waste active carbon doped blending coal for coking is produced from feed coal, waste active carbon and a promoter according to a weight ratio of 100:(0.5-2):(0.5-1). The waste active carbon is used, so the effective use of resources is realized, the environment pollution caused by the stacking and the landfill of the waste active carbon is overcome, and disordered discharge of toxic volatile substances adsorbed by the waste active carbon, caused by improper regeneration, is overcome; and nonvolatile carbon and ash in the waste active carbon are coked by a coal coke oven to form coke, so the use amount of the feed coal is reduced, benzene series substances absorbed in the waste active carbon are fully recovered, environmental pollution is avoided, great economic and social benefits are realized. The promoter can promote the coking of the waste active carbon and the feed coal to form the coke, the fixed carbon content of the produced coke is increased to 88.1%or above, and the quality of the coke is greatly improved.

Description

technical field [0001] The invention relates to the technical field of coking, in particular to coal blending coking mixed with waste activated carbon and a coking method thereof. Background technique [0002] Activated carbon is a kind of porous adsorption material, which is widely used in chemical industry, environmental protection, aerospace and many other fields. Due to its large specific surface area and rich pore structure, it can absorb benzene, toluene, xylene and be used for wastewater filtration, etc. However, activated carbon is decolorized Or after the adsorption is saturated, the internal pore structure is blocked by the adsorbate, thus losing the adsorption capacity, and hundreds of millions of tons of waste activated carbon are discarded every year, which not only causes waste of resources but also produces secondary pollution. [0003] Regarding the disposal of waste activated carbon, some enterprises have no utilization and disposal equipment, so the waste a...

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Problems solved by technology

[0002] Activated carbon is a kind of porous adsorption material, which is widely used in chemical industry, environmental protection, aerospace and many other fields. Due to its large specific surface area and rich pore structure, it can absorb benzene, toluene, xylene and be used for wastewater filtration, etc. However, activated carbon is decolorized Or after the adsorption is saturated, the internal pore structure is blocked by the adsorbate, thus losing the adsorption capacity. After hundreds of millions of tons of waste activated carbon are discarded every year, it causes waste of resources and secondary pollution

[0003] Regarding the disposal of waste activated carbon, some enterprises have no utilization and disposal equipment, so the waste activated carbon produced can only be temporarily stored in the field, randomly piled up, and simply landfilled. Surface water, air, etc. cause serious pollution; some waste activated carbon recycling projects also have secondary pollution to the air, water, and soil environment during the processing process due to the small scale of comprehensive utilization, backward technology, and lack of chemical and environmental protection knowledge.

[0004] Existing methods for regeneration of waste activated carbon include: biological regeneration thermal regeneration method, chemical regeneration method, ultrasonic regeneration method, wet oxidation regeneration method, supercritical fluid extraction technology method and photocatalytic regeneration method, etc., but due to the structure of waste activated carbon, The difference in pore size, adsorption substances, etc. leads to poor adaptability of waste activated carbon recovery and regeneration methods, and the volatile substances released during the regeneration process are also likely to cause air pollution