Ultra low emission online monitoring analyzer for the steel industry

Answer: (1) NO can cause central nervous system paralysis and death in humans. NO2 can cause asthma and emphysema, and damage the function of the heart, lungs, liver, kidneys, and hematopoietic tissues. Its toxicity is stronger than NO. The allowable concentration of NO, NO2, or N2O in the air is 5mg/m3 (calculated as NO2).

(2) NOx, like SO2, will fall to the ground in the atmosphere through dry deposition and wet deposition, and ultimately settle into nitrate or nitric acid. The harm of nitric acid acid rain is stronger than that of sulfuric acid acid rain, because it is not inferior to sulfuric acid acid rain in terms of acidification of water bodies, leaching and impoverishment of soil, burning and destruction of crops and forests, and corrosion and damage to buildings and cultural relics.

The difference is that it brings some beneficial nitrogen to the soil, but this "benefit" is far less than the "disadvantage", as it may cause eutrophication of surface water and damage aquatic and terrestrial ecosystems.

1、 Product Overview

The continuous online monitoring system for flue gas utilizes extraction condensation sampling, backscattering smoke concentration measurement, pitot tube flue gas flow velocity measurement, and computer network communication technology to achieve online continuous monitoring of pollutant emission concentration and total emissions from fixed pollution sources. At the same time, technical improvements have been made in response to the situation where domestic coal types are relatively diverse, coal quality changes greatly, pollutant emission concentrations are high, and flue gas humidity is high. and

Ultra low emission online monitoring analyzer for the steel industry

It mainly consists of two parts: reference method acceptance and network acceptance

1) Reference method acceptance content:

① Acceptance time: Sampling inspection can be conducted with or without prior notice, and on-site acceptance should be completed within one day as much as possible.

② During the on-site acceptance period, the production equipment should operate normally and stably, and a certain emission condition can be achieved by adjusting the fixed pollution flue gas purification equipment. This condition should be kept stable during the testing period. When using the reference method for acceptance, at least five average values of particulate matter, flow rate, and flue gas temperature should be obtained for this test section, and at least nine data points of gaseous pollutants and dosage should be obtained. The average value of the test should be accurately calculated with the minute average value of CEMS1 ` of the flue gas during the same period.

2) Networking acceptance content: Networking acceptance consists of three parts: communication and data transmission acceptance, on-site data comparison, and networking stability acceptance

Ultra low emission online monitoring analyzer for the steel industry