System for manufacturing sulphur by utilizing carbon and sulfur-containing flue gas

Abstract

The invention discloses a system, which performs destructive distillation on carbon-containing materials, upgrades the carbon-containing materials, manufactures the upgraded product to active coke and reduces sulphur-dioxide-rich gas into simple-substance sulphur. By adopting the system, the problems of purification of the flue gas caused by burning of the carbon-containing material and resource utilization of purified byproducts are solved, the resource and energy source utilization rates can be improved, the pollution is reduced, and the benefit is increased. The system for manufacturing sulphur by utilizing carbon and sulfur-containing flue gas comprises a flue gas desulfurization assembly, a sulphur production assembly, an upgrading assembly and an active coke production assembly, wherein the flue gas desulfurization assembly is used for adsorbing sulfur dioxide in the flue gas by the active coke, and desorbing the active coke to prepare sulphur-dioxide-rich flue gas; the sulphur-dioxide-rich flue gas is fed into the sulphur production assembly and is manufactured to sulphur; the upgrading assembly is used for producing and upgrading carbon, which is used for the sulphur production assembly and is used as a raw material to be supplied to the active coke production assembly; and the active coke manufactured by the active coke production assembly is used for flue gas desulfurization assembly.

Description

technical field [0001] The invention relates to a system for producing sulfur, in particular to a system for converting sulfur dioxide in sulfur-containing flue gas into sulfur by using carbonaceous materials. Background technique [0002] Sulfur dioxide pollution is a major aspect of atmospheric environmental pollution. Almost all industrial coal, gas, and fuel oil produce sulfur dioxide, among which coal-fired flue gas from power plants is the main source of sulfur dioxide emissions. In order to solve the problem of sulfur dioxide polluting the environment, western developed countries have successively invented flue gas sulfur dioxide removal methods since the 1980s, among which limestone-gypsum wet desulfurization has become the dominant desulfurization process, which has high desulfurization efficiency , stable operation, low operating costs, etc., have been widely used in countries all over the world, but this method is difficult to deal with the by-product desulfurizat...

AI Technical Summary

Problems solved by technology

In order to solve the problem of sulfur dioxide polluting the environment, western developed countries have successively invented flue gas sulfur dioxide removal methods since the 1980s, among which limestone-gypsum wet desulfurization has become the dominant desulfurization process, which has high desulfurization efficiency , stable operation, low operating costs, etc., have been widely used in countries all over the world, but this method is difficult to deal with the by-product desulfurization gypsum after desulfurization, such as a 300MW / h coal-fired unit, using coal with a sulfur content of 1% , 8.3 tons of lime powder per hour, calculated according to the slurry ratio of 20% lime powder and 80% water, the total slurry is 41.5 tons / h, and the annual operation of the thermal power plant is about 6,000 hours, which will produce 45,000-50,000 tons of desulfurization gypsum, desulfurization The disposal and consumption of post-gypsum by-products is currently handled by stacking and discarding. By 2010, the annual production of desulfurized and discarded gypsum will reach 50-60 million tons. If desulfurized gypsum is allowed to be stacked and developed , that is, waste of resources, land occupation, and secondary pollution of the environment

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