2017-8-29 Purification Technology Edition Daily Question
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Evaporation generally occurs at low pressures; the lower boiling point of the solution facilitates an increase in the heat transfer temperature difference for evaporation； During pressure evaporation, the temperature of the resulting secondary vapor is high, and it can be used as heating vapor for the next stage. √ Coalification Region Purification Technology Edition – 2017 Coal Chemical Industry “My Technical Upgrades” Contest (Large prizes available) http://bbs.hcbbs.com/thread-1786290-1-1.html Registration for Chemical Engineers – Experience Sharing Event “Learning from Others’ Experiences” http://bbs.hcbbs.com/thread-1808158-1-1.html
Correct. Generally, evaporation occurs at low pressures, where the boiling point of the solution is lower, which helps to increase the temperature difference for heat transfer during evaporation. When evaporation takes place under pressure, the temperature of the secondary vapor is higher, and this vapor can be used as heating steam for the next stage of the process. (√ ) Definition 1: The phase change process in which a substance transitions from a liquid state to a gas state. Discipline: Atmospheric Science – Atmospheric Physics. Definition 2: The phase change process in which water transitions from a liquid or solid state to a gaseous state. Discipline: Geography – Hydrology Definition 3: Vaporization that occurs on the surface of a liquid. Discipline: Electricity – General Concepts Definition 4: The process by which liquid water is converted into gaseous water and enters the atmosphere. Field of study: Electricity – General concepts. Definition 5: The process by which water vapor escapes from the surface of water, ice, or other water-containing substances when the temperature is below the boiling point. Field of study: Water resources technology – Hydrology, Water resources – Surface hydrology. Definition 6: The phase change process in which matter transitions from a liquid state to a gaseous state. Discipline: Resource Science and Technology – Climate Resources. In Modern Chinese, it is often used to describe people or things that abnormally appear to be on the verge of disappearing.