Pressure test of Ende powder gasifier
Thread Content
Pressure testing in the producer gas system: Close all valves connected to the gas system； The coal storage tank is filled with pulverized coal between its upper and lower limits ； Start the screw coal feeder; stop it immediately once pulverized coal enters the furnace ； Fill the furnace ash in the producer until it reaches the bottom surface of the lower nozzle ； Seal all manholes ； Feed water to the waste heat boiler, to 50% of the water level in the steam generator ； Each water seal is filled with water. Pressurizing air in the producer gas system: ① Start the oxygen-enriched air blower. ②Open the lower nozzle ball valve and then close the sight window ball valve. ③Open the stop valve of the oxygen-enriched air pipeline, and supply air into the furnace through the control valve. ④The electric valve for releasing gas from the purification system was closed slowly, and the pressure inside the furnace rose to 15 KPa. ⑤The airtightness test was carried out with the pressure inside the furnace maintained at 15 KPa. After the test, all valves remained in their original positions; only the oxygen-enriched air blower was stopped in order to address the leaks ； Then start the oxygen-enriched air blower to conduct a leak check until there are no leaks in the entire system; afterward, close the stop valve and control valve to cease air supply (the pressure will drop naturally). ⑥The pressure difference between the coal storage tank and the generator is 200~500 Pa (safety gas is blown into the coal storage tank). The pressure test for the coal storage tank is replaced by the pressure test results of the individual equipment.
I thought it was a pressurized End furnace
It’s clickbait, haha. Just like the person above, I thought it was also a pressurized Endurance Furnace.
Sure enough, it’s clickbait! The Ende furnace can operate under pressure, which represents a significant improvement for fluidized-bed gasification.
In my opinion, the biggest limitation of fluidized beds is the constraint imposed by the gasification temperature; it must be 100 to 200 degrees lower than the ash melting point of coal, and the reaction takes place in a sensitive critical zone, making slag formation likely and leading to shutdown of the furnace. (This is based on my experience working with bubbling furnaces.) Therefore, I believe that the gasification efficiency will not be very good at 1000 degrees.