Is this sodium hydroxide evaporation and melting equipment feasible?
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I have been considering using the reaction between sodium and water to produce hydrogen, and then re-evaporating and crystallizing the resulting saturated sodium hydroxide solution in order to obtain liquid sodium hydroxide for use in electrolysis to produce sodium. After reviewing many sources, I found that these methods were not satisfactory, so I came up with my own design for an evaporation and melting apparatus – one that uses heat transfer oil as a heat source to heat the evaporation tray, thereby evaporating the water content from sodium hydroxide and melting it. Film vacuum evaporation is employed. The schematic is as follows:
https://wenku.baidu.com/view/1ab8a0ea551810a6f52486b2.html?sxts=1563523779313 https://wenku.baidu.com/view/c174e1eb6aec0975f46527d3240c844769eaa0e4.html Understand it first, then go ahead and design the problem.
1. The industrial production of metallic sodium does not involve the electrolysis of sodium hydroxide; instead, it uses the electrolysis of sodium chloride (sodium hydroxide is also produced through the electrolysis of sodium chloride). 2. Aluminum is safer than sodium and also has a lower cost. Therefore, the use of sodium is unlikely. 3. If sodium is indeed used to produce hydrogen, sodium wires will not be employed; instead, liquid sodium is reacted with water, which makes it easy to control the ratio between the two and is also safer. It can be done in a tubular reactor or a microchannel reactor; the heat of reaction can also be utilized as thermal energy, so it should not be wasted.
This post was last edited by mmliuqing on 2019-7-22 at 21:40. Thank you for your guidance. Sodium was first produced using sodium hydroxide, and only later was sodium chloride used. However, producing sodium from sodium chloride or generating hydrogen from aluminum both result in by-products that are difficult to recycle. Sodium hydroxide, on the other hand, does not produce any harmful by-products during use and recycling, allowing for simple recycling. Solid sodium is used for ease of portability; if liquid sodium is used, heating and insulation are required. There is no available information on the time it takes for sodium to react with water; for example, it is not known how long it takes for 1 gram of sodium to react completely in water. In a reactor that produces 4 cubic meters of hydrogen per hour, the sodium strands produced have a diameter of 25 mm. 5 mm is forced into the water per second to react; can the reaction be completed within one second? If it cannot be completed, more and more will accumulate. I hope to continue receiving your guidance in this regard. Thank you!