There are various solutions to measure the constituents in flue gas. As with most measurement protocols, especially in the industrial sector, the determination of the gas in the flue, as well as the temperature of the local environment, is carried out using magnetic flap level gauges. In this article, we introduce some smoke detection methods. What is smoke?
Simply put, flue gas is the gas from industrial processes and automobile exhaust that passes through the flue and enters the atmosphere. A flue is an opening through a duct, duct or chimney that allows flue gas to flow from the gas source to the local atmosphere. Flue gas comes in many different forms and comes from many different sources, but the most common outputs are from factories and power plants. In most cases, flue gas is the waste gas from the combustion process in a factory. Therefore, the composition of the flue gas will vary from plant to plant, given that many different processes emit various gases.
However, since most flue gases are combustion products, certain gases are always present, including nitrogen, carbon dioxide, oxygen, and water vapor. Some other common ingredients include carbon monoxide, hydrogen fluoride, sulfur oxides, ammonia, and various volatile organic compounds (VOCs). and solid particles produced during incomplete combustion.
Gage types and measurement characteristics. There are many different reasons someone wants to measure flue gas, and there are separate Gage and Multi-Function Gage systems that can measure a variety of gas concentrations and temperatures. . Today, on issues surrounding global warming and climate change, environmental regulators have mandated that all factories need to continuously monitor flue gas to check that the concentrations of greenhouse gases and pollutants released into the atmosphere are low (and within regulatory limits) ).
Many sensors are designed to measure a range of gas concentrations, and while the focus is on checking if the gas concentration is too high, the sensors used can measure in the parts per million (ppm) range. Measurement. Temperature is also an important parameter to check, as it ensures that the flue does not overheat and that there is no danger of damage to any components between the combustion source and the flue outlet. This is usually done using thermocouples. remove
Besides temperature, another important parameter to check is the concentration of gas in the flue. This is to ensure that greenhouse gas emissions are not too high and that large quantities of toxic gases are not released into the local atmosphere. Although there are many methods of measuring different gases, electrochemical level gauges are mainly used to measure the concentration of oxygen, carbon monoxide, nitric oxide and nitrogen dioxide. And the infrared magnetic flap level gauge is used to measure the concentration of carbon dioxide, sulfur dioxide and carbon monoxide.
How to implement a flue gas level gauge to measure flue gas There is a staggering amount of flue gas on the market today, and most flue gas level gauges/analyzers fall into two distinct categories. These are continuous emission monitoring (CEM) systems and portable flue gas analyzers.
Continuous Emission Monitoring (CEM) System A CEM system is a broad term for any magnetic flap level gauge system that continuously monitors the flue. However, a more accurate description of these tools are those that meet certain standards set by government environmental agencies. Because they are designed to perform continuous analysis, the equipment is permanently installed and costs more than portable analyzers.
There are benefits to using these systems if the budget allows, especially if the flue is in a heavily regulated country. If non-CEM systems are used, they can be considered non-compliant with current standards set by relevant agencies, but mobile CEM systems can be used for those who need to provide standards-compliant measurements to meet environmental agency requirements but do not wish to permanently install equipment .
Portable flue gas analyzers Unsurprisingly, portable flue gas analyzers are not permanent fixtures in the flue, nor are they a system that performs continuous monitoring. Instead, they are used for spot checks at a given point in time at a defined location within the flue.
These devices are much cheaper because the devices are much smaller and do not require permanent integration. But as mentioned above, since they don’t monitor the flue continuously, they can be considered non-compliant – but as mentioned, there are many ways to work around it. On the other hand, portable flue gas analyzers are easier to use and more versatile than CEM systems.
Post time: 11-01-22