Method for recycling red lead process gas

A technology of waste gas circulation and red lead, which is applied in the direction of separation methods, chemical instruments and methods, lead red, etc., can solve the problems that affect people's living environment and health, cannot meet the demand for lead material oxidation, and consume large energy, and achieve protection Good health, reduced energy consumption, and reduced production costs
CN106861334AActive Publication Date: 2017-06-20安徽徽能化工科技有限公司
7 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
安徽徽能化工科技有限公司
Publication Date
2017-06-20

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention discloses a method for recycling red lead process gas. In a red lead production calcining process, inlet air needs to be heated by an air heater, so in order to protect the air heater and prolong the life of the air heater, the red lead process gas must be subjected to dust removal and filtration; the content of oxygen in the red lead process gas is much lower than the concentration of oxygen in air, so if the purified and filtered process gas is directly heated together with the inlet air and input into an oxidizing furnace, the aim of accelerating oxidization of lead powder cannot be achieved, but the oxidization speed is reduced. Therefore, the input amount of the oxygen needs to be increased at the air inlet end to make the oxygen enter the air heater together with the process gas and the air, so the process gas can be recycled without discharge, and quick oxidization can be achieved to improve the production efficiency.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of gas treatment, in particular to a method for recycling waste gas from production of red lead. Background technique

[0002] At present, the industrial production method of red lead at home and abroad is mainly to heat and melt the electrolytic lead, then ball mill and pulverize it, and then undergo natural roasting and oxidation at a temperature of 300°C to generate PBO, and then undergo natural oxidation at a high temperature of 500°C to obtain Pb 3 o 4 That is, red lead products, even the most advanced "dry and wet new process" to produce red lead, have to go through the stages of roasting and calcination. Disadvantages of the traditional method: due to the high temperature in the roasting chamber and the oxidation chamber, there is insufficient oxygen, which cannot meet the oxidation demand of the lead material. Only by prolonging the oxidation time can the red lead product be obtained. The energy con...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More