Integrated treatment system for carbon roasting flue gas

Abstract

The invention discloses an integrated treatment system for carbon roasting flue gas. The system comprises a roasting furnace and an incinerator system communicating with a semi-dry desulfurization system at the upstream of a process, wherein the roasting furnace is used for incinerating asphalt smoke through internal flame paths; and 15-17 flame paths are arranged in the roasting furnace, and a thermal insulation structure is arranged at the exterior of the roasting furnace. According to the system disclosed by the invention, a treatment process combined with an asphalt smoke high-efficiency combustion system, the semi-dry desulfurization system, desulfurized ash adsorption asphalt smoke and tar-containing desulfurized ash high-temperature incinerator systems in a large roasting furnace is adopted, and the strictest national environment-friendly emission control requirements can be met; the system is stable and reliable in operation; and no waste water is generated, and a desulfurized product is generally solid waste, and can be applied to the building material industry.

Description

technical field [0001] The invention relates to the technical field of carbon environmental protection treatment, in particular to a comprehensive treatment system for carbon roasting flue gas. Background technique [0002] The main components of the waste gas discharged during the carbon production and roasting process are SO2, NOx, smoke and tar. Due to the lagging behind in the development of carbon environmental protection technology, most carbon companies still use the environmental protection treatment technology of the 1980s for roasting flue gas treatment. The current domestic use The purification methods mainly include electrostatic capture method, alumina adsorption purification method, alkali absorption wet method, electric capture + wet desulfurization method, etc. [0003] The electrostatic capture method adopts the dust and oil removal method of conditioning tower (or alkali washing tower) + electric capture, which has poor operation stability, electric capture...

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Problems solved by technology

Due to the instability of calcium sulfite in semi-dry desulfurization ash, it brings certain difficulties to the comprehensive utilization of semi-dry desulfurization ash

[0006] In the prior art, the semi-dry desulfurization ash treatment and utilization technology mainly revolves around the production of unburned bricks, autoclaved bricks, cement retarders, cementitious materials, dry-mixed mortars, roadbed materials, ceramics, gypsum products, and composite wallboards. Panels, building blocks, filling materials and other building materials, but in the end, because the composition of semi-dry desulfurization ash is unstable, the actual blending amount is small and industrial production cannot be realized, most of the desulfurization ash is still stockpiled and landfilled , low value processing

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