A comprehensive treatment system for carbon roasting flue gas

Abstract

The invention discloses a comprehensive treatment system for carbon roasting flue gas. The system comprises a roaster, the roaster burns asphalt smoke through an internal fire channel, and an incinerator system communicated with a semi-dry desulfurization system upstream of the process; the The inside of the roasting furnace has 15 to 17 fire channels, and the outside of the roasting furnace has a thermal insulation structure. The system of the invention adopts the combined treatment process of the asphalt fume efficient combustion system in the large roaster, the semi-dry desulfurization system, the desulfurization ash adsorption asphalt fume, and the tar-containing desulfurization ash high temperature incinerator system, which can achieve the strictest environmental protection emission control in the country. Requirements, and the system runs stably and reliably, no waste water is produced, and the final product of desulfurization is generally solid waste, which can be used in the building materials industry.

Description

technical field [0001] The invention relates to the technical field of carbon environmental protection treatment, in particular to a carbon roasting flue gas comprehensive treatment system. Background technique [0002] The main components of waste gas excluded in the roasting process of carbon production are SO2, NOx, soot and tar. Due to the lag in the development of carbon environmental protection technology, most carbon enterprises still use the environmental protection treatment technology of the 1980s. The purification methods mainly include electrostatic capture method, alumina adsorption purification method, alkali absorption wet method, electric capture + wet desulfurization, etc. [0003] The electrostatic capture method adopts the dust removal and oil removal method of conditioning tower (or alkaline washing tower) + electric capture, which has poor operation stability, easy ignition by electric capture, low purification efficiency, and serious corrosion of purifi...

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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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