炼油方面 翻译求助？ 试着翻译一下：大致意思，不是准确翻译。 residual oil 渣油 from the crude heater, the hot crude oil is delivered to the crude tower above the fourth tray. 经过原油换热器，热的原油被送至初馏塔第四层塔盘。 the lighter components of the crude are vaporized and move up the tower, leaving a residual oil at the bottom on level control (lcv-405) and is pumped (p-2a, b) through heat exchangers (e-6a, b and e-4a, b) to product storage. 原油的轻组分蒸发，从塔顶出；塔底渣油由lcv-405控制，泵送至换热器e-6a·b以及e-4a，作为产品储存； the residual oil temperature is approximately 650f before heat exchange and 250f after heat exchange. 渣油进入换热器前温度为650f，以250f出换热器； in the product storage the resid temperature must be maintained above 200f to maintain liquidity. 在储存区渣油温度应保持在200f以上的液体状态（防凝） a portion of the resid product may be diverted to the heater fuel oil storage tank. 部分渣油被加热后送往燃料油储存罐。 查看更多
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