(Daily Question) Coal-to-oil and olefins forum, April 21, 2018
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3.jpg Participation: Prize of 5 Wealth； Correct answer: Reward of 10 wealth points ； Note: This post is valid for 48 hours. Question: (DMTO) Olefin separation unit: What is the maximum allowable temperature of the turbine exhaust gas? Why? The turbine exhaust temperature must not exceed 120°C. An excessively high exhaust temperature will cause the thermal expansion at the end of the turbine’s low-pressure stage to exceed the allowable value, while the thermal expansion at the steam inlet remains unchanged. This will result in a \"wavy\" shape due to misalignment along the axis, leading to misalignment of the couplings and rotor vibration. Additionally, an excessively high feedwater temperature will prevent the feedwater pump from delivering sufficient flow. Note: The answers will be released automatically in two days!
The turbine exhaust temperature must not exceed 120°C; too high an exhaust temperature can cause thermal deformation in the low-pressure sections of the turbine, leading to changes in the alignment of the bearing axes, and frictional vibrations between the moving and stationary parts that can damage the machine.
The turbine exhaust temperature must not exceed 120°C. An excessively high exhaust temperature will cause the thermal expansion at the end of the turbine’s low-pressure stage to exceed the allowable value, while the thermal expansion at the steam inlet remains unchanged. This will result in a \"wavy\" shape due to misalignment along the axis, leading to misalignment of the couplings and rotor vibration. Additionally, an excessively high feedwater temperature will prevent the feedwater pump from delivering sufficient flow.
The turbine exhaust temperature must not exceed 120°C; too high an exhaust temperature can cause thermal deformation in the low-pressure section of the turbine, leading to changes in the alignment of the bearing axes, and frictional vibrations between the moving and stationary parts that can damage the machine.
The turbine exhaust temperature must not exceed 120°C. An excessively high exhaust temperature will cause the thermal expansion at the end of the turbine’s low-pressure stage to exceed the allowable value, while the thermal expansion at the steam inlet remains unchanged. This will result in a \"wavy\" shape due to misalignment along the axis, leading to misalignment of the couplings and rotor vibration. Additionally, an excessively high feedwater temperature will prevent the feedwater pump from delivering sufficient flow.
The turbine exhaust temperature must not exceed 120°C; too high an exhaust temperature can cause thermal deformation in the low-pressure section of the turbine, leading to changes in the alignment of the bearing axes, and frictional vibrations between the moving and stationary parts that can damage the machine.
The turbine exhaust temperature must not exceed 120°C; too high an exhaust temperature can cause thermal deformation in the low-pressure sections of the turbine, leading to changes in the alignment of the bearing axes, and frictional vibrations between the moving and stationary parts that can damage the machine.
The turbine exhaust temperature must not exceed 120°C; too high an exhaust temperature can cause thermal deformation in the low-pressure section of the turbine, leading to changes in the alignment of the bearing axes, and frictional vibrations between the moving and stationary parts that can damage the machine.
At 120 degrees, the exhaust temperature of the turbine increases, the vacuum level decreases, which reduces the utilization of heat within the entire turbine and thus lowers its efficiency. It will overheat the blades. The exhaust temperature is too high; if expansion occurs, it can cause damage to the center of the entire unit and lead to vibration
The turbine exhaust temperature must not exceed 120°C; too high an exhaust temperature can cause thermal deformation in the low-pressure section of the turbine, leading to changes in the alignment of the bearing axes, and frictional vibrations between the moving and stationary parts that can damage the machine.
At 120°C, the excessively high exhaust temperature causes thermal deformation of the low-pressure section of the turbine, leading to a change in its centerline; this results in frictional vibrations between the moving and stationary parts, thereby damaging the machine.