In the variety of coal utilization, coking process has the highest coal utilization and will have about 75% coke and other 25% will be coal gas and chemical products. Coking process is to put powdered coal into coke oven after blending and a series of physical and chemical changes would occur to the powered coal in high temperature condition. The generated coke oven gas has various impurities so that it needs to be purified before using. Installation of online monitor benefits to increase productivity and quality as well as controlling pollutant emission concentration.
| NO. | Measurement point | Temperature | Pressure | Measurement components | Detection purpose | Recommend products* |
| 1 |
Coke flue gas |
60-200°C | Slight positive pressure | O2: 0-21% | Monitor fuel combustion condition | LGT-100 |
| 2 | Electrostatic tar catcher downstream | Normal | Slight positive pressure | O2: 0-5% |
Recovery and utilization of coke oven gas |
LGT-100 |
| 3 | Blower downstream | 180-260°C | Slight positive pressure |
CO: 0-30% CO2: 0-30% O2: 0-5% H2: 0-10% |
Process safety control | LGT-180 Hydrogen analyzer |
| 4 | Before desulfuration | / | / | H2S: 0-1000ppm | Monitor desulfurization efficiency, prevent corrosion of the process dpipelines and devices | LGT-200 |
| 5 | After desulfuration | Normal | Slight positive pressure |
H2S: 0-200ppm |
Monitor desulfurization efficiency, prevent corrosion of the process pipelines and devices | LGT-200 |
