System and method for producing refined sulfuric acid through pyrite acid manufacturing system

Abstract

The invention discloses a system and method for producing refined sulfuric acid through a pyrite acid manufacturing system, and relates to the technical field of chemical engineering. The system for producing the refined sulfuric acid comprises a refined acid tower; a first smoke discharging port is connected to the upper end of the refined acid tower in a penetrating mode; a smoke feeding port isinstalled in one side of the lower end of the refined acid tower; a smoke feeding pipe is connected to one end of the smoke feeding port in a penetrating mode; and a gas valve A for controlling the feeding quantity of sulfur trioxide smoke is installed between the smoke feeding port and the smoke feeding pipe. According to the design, refined acid overflowing parts are lined with tetrafluorohydrazine, so that iron dissolved in acid is reduced; deionized water is adopted to adjust the concentration of the refined acid; dried air is utilized for air stripping of dissociative sulfur dioxide dissolved in the refined acid; the concentration of the dissociative sulfur dioxide in the acid is lowered; and the problem that in traditional pyrite acid manufacturing production, the content of industrial sulfuric acid impurities is relatively high, and particularly iron ions and the dissociative dioxide exceed a standard, so that the refined acid quality requirements cannot be achieved, and the economic value is reduced is solved.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a system and method for producing refined sulfuric acid in a pyrite acid production system. Background technique [0002] Pyrite deposits are mainly formed by endogenesis. In addition, the yellow sulfur ore deposit formed by coal sulfur deposition is also worth utilizing. The unsolidified magma deep in the earth contains a lot of sulfur. When the magma intrudes into the earth's crust, the sulfur contained in the magma is separated due to the reduced pressure. The present invention is exactly a kind of production system aiming at producing acid from pyrite. [0003] However, the industrial sulfuric acid produced by traditional pyrite acid production has high impurity content, especially iron ions and free sulfur dioxide, which cannot meet the quality requirements of refined acid and reduce the economic value. Therefore, those skilled in the art provide a system and me...

AI Technical Summary

Problems solved by technology

[0003] However, the industrial sulfuric acid produced by traditional pyrite acid production has a high content of impurities, especially iron ions and free sulfur dioxide, which cannot meet the quality requirements of refined acid and reduce the economic value.

Images