The purification methods of phosphine include adsorption method, low temperature distillation method and membrane separation method etc.
总结了磷化氢的精制方法，主要有吸附法、低温精馏法和膜分离法等。
For the environmental protection and the resource recycling, a new process of rolling mill sludge disposal by the low temperature distillation was proposed.
为解决轧钢含油污泥的环境污染问题，实现铁鳞的高附加值利用，本文提出利用低温蒸馏法处理含油铁鳞新技术。
Main factors such as final heating temperature, heating time, heating speed and particle size of raw material on dry distillation of oil shale at low temperature were examined.
对影响油页岩低温干馏的主要因素进行了考察，其中包括最终加热温度、加热时间、加热速度及页岩粒度等因素。
Scottish chemist and industrialist who showed that low-temperature distillation of shale could yield substantial commercial quantities of paraffin oil and solid paraffin wax.
苏格兰化学家、实业家。他发现低温蒸馏页岩可以产生丰富的商用石蜡油和固体石蜡。
The serious corrosion problem at low temperature could be found in atmospheric-vacuum distillation unit, especially in the atmosphere overhead condenser.
常减压装置存在较为严重的低温位腐蚀问题，尤其是常压塔顶冷凝器腐蚀问题更为严重。
Butanone can be miscible with water under low temperature, and formed azeotrope when distillation, making the separation of butanone and water difficulty.
丁酮与水常温下部分互溶，蒸馏时又形成共沸物，给丁酮-水的分离带来了困难。
Based on pinch analysis method and exergy principle, a new approach is developed to optimize the heat-pump integration between low-temperature distillation column and refrigeration system.
本文复合夹点分析方法和分析原理，建立了低温蒸馏塔与冷冻系统热泵流程集成的优化方法。
In the experiment, moisture of the product by dry distillation at the low temperature was determined and the ratio of contained oil was indirectly determined.
实验中采用对油页岩进行低温干馏后测定产物中的水分，从而间接测定油页岩的含油率。
After the produced water having been treated by low temperature multi-efficient distillation process, it supplies heat source plants and other users.
经低温多效蒸馏工艺处理后的产品水供给热源厂等用户。
After the produced water having been treated by low temperature multi-efficient distillation process, it supplies heat source plants and other users.
经低温多效蒸馏工艺处理后的产品水供给热源厂等用户。
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