A kind of denitration oxidant for flue gas of glass melting furnace, denitration equipment and denitration method

A glass melting furnace and oxidant technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of not meeting the processing requirements, large investment in process equipment, and easy corrosion of equipment, so as to ensure long-term high efficiency and reduce One investment, less secondary pollution effect

Active Publication Date: 2022-07-15
QINHUANGDAO GLASS IND RES & DESIGN INST
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology also has the disadvantages of large investment in process equipment, the need to preheat flue gas, and the equipment is easy to corrode, and the denitrification rate is low, and the ammonia escape rate is high, which cannot meet the treatment requirements. It needs to be used together with other methods to meet the emission requirements.

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of denitration oxidant for flue gas of glass melting furnace, denitration equipment and denitration method
  • A kind of denitration oxidant for flue gas of glass melting furnace, denitration equipment and denitration method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Take the 600t / day float glass production line as an example, the fuel: petroleum coke powder, the flue gas volume per hour is 85000Nm 3 , NO in flue gas x The content is 2750mg / Nm 3 . The concentrations of sodium hypochlorite and peracetic acid are 3 wt % and 5 wt %, respectively, the concentration of ozone is 3 mol / l, the pore diameters of the porous barrier 2, the porous material layer 6, and the barrier layer 12 are 8 mm, 2 μm, and 2 mm, respectively, and the inclination of the barrier layer 12 The angle is 10°, and the residence time of the reaction in the mixed solution, ozone, and alkaline solution is 2min, 10min, and 3min, respectively. Through the denitration equipment and method of the present invention, NO in the flue gas discharged into the atmosphere x The content is 638mg / Nm 3 , reach the national standard emission standards.

Embodiment 2

[0057] Take the 600t / day float glass production line as an example, the fuel: petroleum coke powder, the flue gas volume per hour is 85000Nm 3 , NO in flue gas xThe content is 2750mg / Nm 3 . The concentrations of sodium hypochlorite and peracetic acid are 16wt% and 22wt% respectively, the concentration of ozone is 2mol / l, the pore diameters of the porous barrier 2, the porous material layer 6 and the barrier layer 12 are respectively 25mm, 37μm and 12mm, and the inclination of the barrier layer 12 The angle is 25°, and the residence time of the reaction in mixed solution, ozone, and alkaline solution is 0.5min, 2min, and 10s, respectively. Through the denitration equipment and method of the present invention, NO in the flue gas discharged into the atmosphere x The content is 626mg / Nm 3 , reach the national standard emission standards.

Embodiment 3

[0059] Take the 600t / day float glass production line as an example, fuel: petroleum coke powder, the flue gas volume per hour is 85000Nm 3 , NO in flue gas x The content is 2750mg / Nm 3 . The concentrations of sodium hypochlorite and peracetic acid are 7wt% and 15wt% respectively, the concentration of ozone is 4mol / l, the pore diameters of the porous barrier 2, the porous material layer 6 and the barrier layer 12 are respectively 19mm, 22μm and 8mm, and the inclination of the barrier layer 12 The angle is 15°, and the residence time of the reaction in the mixed solution, ozone, and alkaline solution is 1min, 5min, and 1min, respectively. Through the denitration equipment and method of the present invention, NO in the flue gas discharged into the atmosphere x The content is 435mg / Nm 3 , reach the national standard emission standards.

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

PUM

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
pore sizeaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a denitration oxidant for flue gas from a glass melting furnace, denitration equipment and a denitration method. The denitration oxidant comprises a mixed solution composed of main oxidant ozone, auxiliary oxidants sodium hypochlorite and peracetic acid; Oxidation chamber and lye absorption chamber for denitration oxidant. In the denitration method, the flue gas of the glass melting furnace is passed into the oxidation chamber, and the NO in the flue gas of the glass melting furnace is completely oxidized to NO 2 , and then pass into the lye absorption chamber, and use the alkaline solution to absorb the oxidized NO in the flue gas of the glass melting furnace x , and finally obtain the flue gas of the glass melting furnace after denitration. The denitration oxidant of the invention has a wide range of sources, low cost, small footprint of the denitration equipment, easy maintenance and low cost, and the denitration method can ensure long-term high efficiency of denitration during the use process; reduce the one-time investment of denitration, do not need a catalyst, and greatly reduce denitrification. Operating costs.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment of glass melting furnaces, in particular to an oxidant used for denitration of flue gas of glass melting furnaces, as well as denitration equipment and denitration methods using the oxidant. Background technique [0002] At present, there are many glass production lines in the country. As of April 2016, there are more than 400 flat glass production lines and nearly 3,000 daily glass, bottle and jar glass, glass fiber and other special glass production lines. According to statistics, these glass production lines mainly use petroleum coke powder, heavy oil, natural gas, coal-to-gas and coal powder as fuel, of which 55% use petroleum coke powder as fuel, 25% use heavy oil as fuel, and the remaining 20% ​​use natural gas, Coal-to-gas and pulverized coal are used as fuel. According to relevant information and combined with on-site monitoring data, the pollutant content in the flue gas of gl...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(China)
IPC IPC(8): B01D53/75B01D53/78B01D53/76B01D53/56
CPCB01D2251/104B01D2258/0241B01D53/565B01D53/82
Inventor续芯如王志平贾立丹冯建业黄俏李晓杰周琳琳寇飞宋圆美
OwnerQINHUANGDAO GLASS IND RES & DESIGN INST