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With the strict national environmental protection policies, low nitrogen combustion design has led to severe oxygen deficiency in the main combustion zone, strong reducing atmosphere in the wall adhering zone, and widespread high-temperature corrosion of water-cooled walls in coal-fired boilers. Based on the actual combustion situation of the boiler, the mutual influence between flue gas CO and operating conditions, as well as high-temperature corrosion, is obtained. Based on online monitoring of flue gas CO concentration, a high-temperature corrosion online monitoring system is designed, to fulfill further combustion optimization.
Type :
SPS-200SPS-200 is a gas analysis system specially designed by SIGAS for monitoring the concentration of carbon monoxide, carbon dioxide, oxygen, and hydrogen sulfide in the furnace of power plants. SPS-200 is composed of sampling probe unit, probe blowback unit, pretreatment unit and instrument control unit. The sampling probe unit and probe blowback unit are installed on the flue, while the pretreatment unit and instrument control unit are integrated in the "analysis main cabinet".
The analysis system is a two-sampling system, which uses a pre-processing system and an analysis system to detect gas concentration data at two sampling points in turn. The system can continuously and accurately complete the sample gas analysis, with good selectivity, avoid the interference of background gas, the system output 4~20mA current signal.
The analysis system has its own independent power control and logic control functions, and controls the detection, back blowing, self-diagnosis and other functions of the measuring device, without system control or manual operation outside the device.
The analysis system has the function of system fault alarm contact output, which can send the signal to DCS system.
At the same time, the analysis system has analog or RS485 signal output.
Product Advantages:
Specification:
Type |
Item |
Parameter |
Specification |
Measurement range |
CO(dual-range):0~10000ppm,0~300000ppm; H2S:0~1500ppm;O2:0~25%;CO2:0~100% |
Accuracy |
1%FS |
|
linearity error |
≤±1%FS |
|
Span Drift |
≤±0.5%FS |
|
Zero Drift |
≤±0.5%FS |
|
Maintenance Cycle |
1 time / 3 months |
|
Output signals |
analog output |
4-20mA(Isolated, Max Load 750Ω) |
Interface |
RS485 or RS232 |
|
Working condition |
Power |
220VAC |
Working tem. |
5℃-40℃ |