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如果天然气中含有一定量的水蒸气,当()到一定数值时,天然气中水蒸气开始凝析出来。
A.(A)温度下降或压力升高;
B. (B)温度上升或压力升高;
C. (C)温度上升或压力降低;
D. (D)温度下降或压力降低
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- · 有7位网友选择 B,占比70%
- · 有2位网友选择 C,占比20%
- · 有1位网友选择 A,占比10%
A.(A)温度下降或压力升高;
B. (B)温度上升或压力升高;
C. (C)温度上升或压力降低;
D. (D)温度下降或压力降低
A、(1)析出的液态水与天然气中的某些组分形成固态水合物,从而堵塞管道或设备The resulting liquid water forms a solid hydrate with some components of natural gas, clogging pipes or equipment;
B、(2)析出的液态水会加剧管内壁的腐蚀,尤其是当天然气中含有硫化氢和二氧化碳时更为严重The resulting liquid water can exacerbate corrosion on the inside of the pipe, especially when natural gas contains hydrogen sulfide and carbon dioxide;
C、(3)水积聚后减小流通面积增加输气阻力。如果析出的液态水太多,管道中可能会出现气液两相段塞流,在干线输气管道上不允许出现After the accumulation of water, the flow area decreases and the resistance of gas transmission increases. If too much liquid water is precipitated, gas-liquid two-phase slug flow may occur in the pipeline, which is not allowed in the main pipeline;
D、(4)水蒸气降低湿天然气的热值Water vapor reduces the calorific value of wet natural gas。
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