Calculation of the saturated steam content in raw gas
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This post was last edited by ldq074 on 2015-12-13 at 13:51. The crude gas coming out of the vaporization furnace is sent to the subsequent system for conversion into usable gas after being washed. The pressure in the furnace is 4.0 MPa, and the temperature after washing is 180°C; at this temperature, water vapor is in a saturated state. The flow rate as measured by the outlet flow meter is 10 m³/h. The diameter of the main pipe for the crude gas is 500 mm. How can one calculate how much steam is contained in the crude gas?； 1. If the temperature decreases or increases by 1 degree after washing, how much will the water vapor amount change? 2. After the furnace load is increased and the flow rate rises to 12 m³/h, the outlet temperature remains unchanged; how much will the amount of water vapor contained change? 3. What impact does a decrease in furnace pressure have on the amount of saturated steam?
Furnace pressure is 4.0; after washing, it is considered as 3.9. The vapor pressure at 180°C is 1.0, so the amount of water vapor is approximately 25,000 cubic meters； If 179°C, 24,500 cubic meters, 181°C, 25,650 cubic meters ； Increase the load to 12W; the temperature remains unchanged, with about 30,000 cubic meters of steam ； After reducing the pressure in the furnace, a specific analysis must be conducted based on the temperature.
This post was last edited by ldq074 on 2015-12-14 21:37. Could you please explain how it’s calculated? I’d be very grateful. If the pressure is reduced while the temperature remains constant, how much can the steam volume change?
Based on the syngas temperature, the corresponding saturated vapor pressure is determined; this value is divided by the total pressure and then multiplied by the syngas flow rate to obtain the amount of water vapor.