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Smelting flue gas purification process

A technology for smelting flue gas and purification process, which is applied in the field of smelting flue gas purification and can solve problems such as poor treatment effect of specific smelting flue gas.

Pending Publication Date: 2021-12-28
CHENGDU INTERMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a smelting flue gas purification process and a smelting flue gas purification system to solve the problem in the prior art that the treatment effect of specific smelting flue gas is not good

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  • Smelting flue gas purification process

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Embodiment Construction

[0030] The present invention will be clearly and completely described below in conjunction with the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before the present invention is described in conjunction with the accompanying drawings, it should be pointed out that:

[0031] The technical solutions and technical features provided in each part of the present invention, including the following description, can be combined with each other under the condition of no conflict.

[0032] In addition, the embodiments of the present invention referred to in the following description are generally only a part of the embodiments of the present invention, rather than all the embodiments. Therefore, based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0...

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Abstract

The invention discloses a smelting flue gas purification process, and aims to solve the problem of poor treatment effect on specific smelting flue gas in the prior art. The process is used for treating non-ferrous smelting flue gas generated by non-ferrous metal smelting and comprises the following steps: a, introducing the non-ferrous smelting flue gas into a sulfur trioxide removal unit, and then outputting first to-be-treated gas without sulfur trioxide from the sulfur trioxide removal unit; b, feeding the first to-be-treated gas into a high-temperature flue gas dust removal unit, and then outputting second to-be-treated gas with dust removed from the high-temperature flue gas dust removal unit; c, introducing the second to-be-treated gas into a gas cooling and arsenic collecting unit, and then outputting third to-be-treated gas without arsenic trioxide from the gas cooling and arsenic collecting unit; d, introducing the third to-be-treated gas into a sulfur dioxide acid-making unit so as to obtain a sulfuric acid product through the sulfur dioxide acid-making unit.

Description

technical field [0001] The invention relates to the technical field of smelting flue gas purification, in particular to a smelting flue gas purification process and a smelting flue gas purification system. Background technique [0002] The non-ferrous smelting flue gas produced by non-ferrous metal smelting, such as copper smelting flue gas, lead-zinc smelting flue gas, pyrite smelting flue gas, etc., not only has high temperature but also contains sulfur dioxide, sulfur trioxide, arsenic trioxide, water vapor and dust. Among these substances, some have recovery value (such as sulfur dioxide can be used to make sulfuric acid, and arsenic trioxide can be used as a raw material for smelting arsenic alloys and manufacturing semiconductors), and some will cause harm to equipment (such as sulfur trioxide combined with water vapor. Acid condensation will be generated during the change, which will lead to pipeline corrosion), and some will cause environmental pollution (such as dus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/82B01D53/83B01D53/50B01D53/00B01D46/02B01D46/00
CPCB01D53/002B01D2251/604B01D2251/602B01D2251/404B01D2251/402B01D53/82B01D53/83B01D53/508B01D46/023B01D46/00B01D2258/025
Inventor 高麟汪涛王华明
Owner CHENGDU INTERMENT TECH
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