A device and process for deep oxidation desulfurization and denitrification of industrial flue gas

A deep oxidation, industrial flue gas technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problem of difficult recycling of nitrate/nitrite mixture, single, insufficient removal rate of nitrogen oxides, etc. problems, to achieve the effect of improving technical economy, improving removal efficiency, and improving denitrification efficiency
CN109925859BActive Publication Date: 2020-12-22INST OF PROCESS ENG CHINESE ACAD OF SCI
5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF PROCESS ENG CHINESE ACAD OF SCI
Publication Date
2020-12-22

Smart Images

  • Figure 1
    Figure 1
Patent Text Reader

Abstract

The invention relates to an apparatus and a process for deep oxidative desulfurization and denitrification of industrial flue gas. The apparatus comprises a first absorption tower 1, a second absorption tower 2, an ozone generator 3, an induced draft fan 4 and a demister 5 positioned on the upper portion of the second absorption tower 2, wherein the gas outlet pipeline of the first absorption tower 1 is divided into two parts, one part of the gas outlet pipeline is connected to the lower portion of the absorption section of the second absorption tower 2, is provided with the induced draft fan4, and is connected to the ozone conveying pipeline of the ozone generator 3, and the other part of the gas outlet pipeline is connected to the upper portion of the absorption section of the second absorption tower 2. According to the present invention, with the application of the apparatus to perform deep oxidative desulfurization and denitrification on industrial flue gas, the advantages of lessozone consumption, high nitrogen oxide removal rate, low cost and the like can be achieved; and the apparatus and the method are suitable for the desulfurization and denitration of steel and iron ornon-ferrous metallurgical sintering flue gas and industrial furnace flue gas, and have good economic benefits and broad application prospects.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of flue gas pollution control, in particular to a device and process for deep oxidation, desulfurization and denitrification of industrial flue gas. Background technique

[0002] my country SO 2 and NO x Emissions of air pollutants such as air pollutants remain high, environmental protection standards are becoming increasingly stringent, and enterprises are facing severe pressure to reduce emissions. Especially in iron and steel, coking and other industries, due to the low temperature of flue gas such as coke oven and sintering (coke oven flue gas 250-300°C, 150-200°C after waste heat recovery; sintering flue gas is about 150°C), conventional SCR denitrification technology is difficult to achieve efficient denitrification and cannot be directly applied. At the same time, the SCR denitrification technology occupies a large area, and the investment and operation costs are high. Therefore, there is an urgent need for...

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