Purification system of sulfur-containing tail gas of high-temperature furnace

Abstract

The invention discloses a purification system of sulfur-containing tail gas of a high-temperature furnace. The purification system comprises a first-grade purification system and a second-grade purification system, wherein the sulfur-containing tail gas is introduced into the first-grade purification system to react with a reaction solution in the first-grade purification system, so as to remove 85 to 90 percent of sulfur dioxide in the sulfur-containing tail gas, and obtain first-grade purified gas; the second-grade purification system is used for introducing the first-grade purified gas intothe second-grade purification system and removing the residual 6 to 10 percent of the sulfur dioxide in the first-grade purified gas in a second-grade purification device, so as to obtain second-grade purified gas. The purification system of the sulfur-containing tail gas of the high-temperature furnace, provided by the invention, is used for separating and recycling the tail gas of the high-temperature furnace, so as to prevent a condition that the tail gas is directly discharged into the air to pollute the environment; the first-grade purification system and the second-grade purification system are arranged and are used for carrying out two times of purification on the sulfur-containing tail gas; the effect of purifying the tail gas is good, the problem that the content of sulfur oxidein the tail gas exceeds the standards can be radically solved and the pollution to the atmosphere is reduced; the preparation system can help to establish an environment-friendly factory.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a purification system for sulfur-containing tail gas of a high-temperature furnace. Background technique [0002] At present, during the production of expanded graphite, the expansion furnace produces excessive (even much higher than the national emission standards) sulfur oxides. Most expanded graphite manufacturers discharge the tail gas generated by the expansion furnace directly into the atmosphere, and the sulfur oxides will Pollution to the atmosphere near the factory. In order to reduce the pollution to the surrounding air environment, only a few enterprises have adopted heightening treatment for the tail gas discharged from the expansion furnace (over 15m in height). In essence, it really solves the problem that the content of sulfur oxide exceeds the standard. [0003] Therefore, it is an urgent technical problem in this field to provide a purification system for...

AI Technical Summary

Problems solved by technology

[0002] At present, during the production of expanded graphite, the expansion furnace produces excessive (even much higher than the national emission standards) sulfur oxides. Most expanded graphite manufacturers discharge the tail gas generated by the expansion furnace directly into the atmosphere, and the sulfur oxides will Pollution to the atmosphere near the factory. In order to reduce the pollution to the surrounding air environment, only a few enterprises have adopted heightening treatment for the tail gas discharged from the expansion furnace (over 15m in height). In essence, it really solves the problem that the content of sulfur oxide exceeds the standard

Images