IGCC fuel component analysis and calorific value measurement system

An IGCC (Integrated Gasification Combined Cycle) fuel component analysis and calorific value measurement system, characterized by including the following steps:

• Step 1:
• Syngas sampling:
• Sample syngas in two ways, reduce the syngas pressure, and heat and regulate the syngas;
• Step 2:
• Syngas pretreatment:
• Dehydrate the wet syngas through the constant temperature condensing unit to remove water in the wet syngas, and calculate the water proportion by comparing the mass before and after condensation;
• Step 3:
• Syngas component measurement:
• A syngas component measuring device comprises a first measuring device and a second measuring device, each measuring device is composed of a methane, carbon dioxide and carbon monoxide measuring instrument and a hydrogen measuring instrument;
• Step 4:
• Calorific value calculation of syngas:
• The infrared instrument measures the fuel component values, introduces the measured and calculated calorific value formulas, and compare the two calorific values as the reference of system calorific values;
• Step 5:
• Transmit the calculation results to a second calorific value analysis unit through a first calorific value analysis unit, and the second calorific value analysis unit performs PID (Proportional Integral Derivative) mediation by comparing the preset calorific value with the received calorific value to control the regulating valve to regulate the total calorific value of the fuel;
• Step 6:
• The chromatographic instrument is connected with the second calorific value analysis unit as a standby instrument, and the value of the chromatographic instrument can be selected to ensure complete loop control when the infrared instrument fails.