火检设备-FIREYE-office研讨.pptVIP

* The power generating industry has evolved to a sophisticated state over the last century, but even today with the increasing use of combined cycle and gas turbine, a large percentage of this industry, as well as many other industries, still depend on combustion within a boiler. Because of the ease of availability of fossil fuels, this is expected to continue for years to come. As such, this environment presents a unique problem in safe operation with respect to Flame Detection Equipment as more and more applications are developed The applications utilise a wide range of Burners and some of these are detailed on the slide and include Low NOx, Multi-burner, opposed fired burners, tangentially fired burners, incinerators and Kilns. * Through these burners flow an extensive range of fuels including many fuel oils, Natural gas and LPG’s, Pulverised coal, H2S and CO along with other type of process and reclaimed gases. More and more, there is a need for combinations for the above mentioned fuels to be combusted for various economic and process needs. When we couple the large variety of applications with the equally large combination of fuels selection of the right flame detector becomes the challenge. * So to summarise the conditions in todays industrial applications and power generating industries presents the Flame Safeguard manufacturers a challenge in the determining of absence or presence of the targeted flame in the combustion chamber. More importantly, differentiation between the targeted flame and the background flames. This allows us to ensure only the targeted flame is regarding and no other influence from adjacent or opposite burners or any other source is recognised. * In general Methods of Flame Detection can be divided in to the following groups: Thermal method Rectification method Optical Method Thermal method by means of sensing the heat generated by the combustion process, most often through the use of a thermocouple device, providing an output t