Ore copper smelting environment flue gas collecting system

Abstract

The invention provides an ore copper smelting environment flue gas collecting system. The ore copper smelting environment flue gas collecting system is a closed type plant; a converting furnace, a refining furnace and a cinder ladle tipping device are arranged in the closed type plant according to process requirements, each of the converting furnace, the refining furnace and the cinder ladle tipping device is provided with a flue gas collecting unit, one side furnace end of the refining furnace is connected with a dilution chamber, the dilution chamber is connected with a cold air pipeline, a smoke outlet of the dilution chamber is connected to a first smoke collecting pipeline, process smoke of the refining furnace is connected into the first smoke collecting pipeline through the dilution chamber, annularly-collected smoke generated by the converting furnace is collected by a converting furnace gas collecting hood and conveyed to the first smoke collecting pipeline to be mixed with the process smoke of the refining furnace and then connected into a bag type dust collector, and the smoke at a gas outlet of the bag type dust collector is extracted by an annular collection fan, conveyed to a desulfurization system and then discharged; annular smoke generated by the refining furnace and the cinder ladle tipping device is collected by a smoke collecting hood, and can be selectively subjected to bag type dust removal or directly extracted by the fan and conveyed to the desulfurization system to be discharged.

Description

technical field [0001] The invention relates to a flue gas collection system of a copper smelter, in particular to a flue gas collection system generated during the operation of the workshop of the copper smelter and related equipment arranged in the workshop. Background technique [0002] The ore copper smelting process uses sulfide ore as the main raw material, and its main components are Cu, S, and Fe. The molten copper-containing intermediate material produced in the subsequent transportation and treatment process contains oxides such as SO2, SO3, and entrained All kinds of metal particles, the flue gas produced is mainly used as the raw material for the subsequent acid production process, and a small amount escapes into the surrounding environment. This part of the flue gas is referred to as the environmental flue gas. [0003] The ore copper smelting process is generally divided into continuous operation process and intermittent operation process according to the opera...

AI Technical Summary

Problems solved by technology

[0011] 1. The traditional smoke collection system is equipped with a separate smoke collection system for the blowing furnace, refining furnace, and slag bag tipping device. The system includes waste heat boiler, air cooler, water cooling device, cyclone dust collection device, bag filter and other equipment. They are operated independently of each other, and the control system is huge and complex, which requires extremely high professional theoretical level and on-site operation proficiency of operators. At the same time, due to the large fluctuations in operating conditions and the high failure rate of equipment, it forms certain constraints on the continuity of production;

[0012] 2. The traditional environmental flue gas collection system occupies a large area, has a large investment, and high operating costs. Due to the large number of equipment configurations, the site occupation is large, the land investment cost is large, and multiple systems are running at the same time. Equipment maintenance, maintenance, and operating costs high;

[0013] 3. The traditional flue gas collection system has strict requirements on the volume, temperature and composition of the flue gas

The flue gas volume fluctuates greatly, which is easy to cause changes in temperature and flow rate

If the temperature is too high, the acid system cannot withstand it, and the bag filter will also be seriously affected; if the temperature is too low, it is easy to form low-temperature corrosion

The composition of the flue gas fluctuates greatly, or it cannot meet the needs of subsequent process operations, or it needs to configure more equipment to process the flue gas at different stages, which increases the operating cost and difficulty

The aforementioned problems will lead to high failure rate of equipment and increase of maintenance cost

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