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乙醇脱水分子筛 Molecular Sieve for Ethanol Dehydration

浏览次数:次      更新时间:2021-01-20 11:51:18

分子筛作为气体和液体的有效吸收剂。具有独特结构的活性分子筛有助于多种系统在很大程度上去除不需要的气体或液体杂质。它还可以分子大小的形式将气体或液体分开。分子筛在95.6%体积的乙醇高于共沸点的蒸馏过程中起重要作用。目前,在合成分子筛的有效帮助下,采用先进的技术可以实现乙醇的脱水,使其超越这一共沸点。
在工业和食品应用中,分子筛脱水工艺要求较高的纯度。3A型分子筛被认为是最有效的干乙醇类型。在乙醇脱水过程中,水化的乙醇蒸气通过分子筛床。当蒸汽通过筛床时,在第一步中,水被吸附剂结构的孔吸附。吸附过程持续进行,直至从这些蒸汽中可能的水吸附完成或分子筛饱和为止。
将水从水合乙醇蒸汽转移至活性分子筛的过程是通过一个区域或一个区域进行的,在该区域中,水含量的降低从其入口输送至出口浓度。该主输送区提供一个用于输送脱水的活性床,而另一个用于再生的床。从一张床到另一张床的移动是通过强大的阀门和自动化来处理和控制的。分子筛脱水后的纯乙醇可作为汽车燃料及其他有用用途。

Molecular sieve acts as an effective absorbent for gases and liquids. Activating molecular sieves with a unique structure helps several systems to remove unwanted gas or liquid impurities to a great extent. It can also split the gases or liquids in the form of molecular size. Molecular sieve plays a great role in the distillation of ethanol above the azeotropic point at 95.6% volume. Now, ethanol dehydration process can be carried out with the advanced technology beyond this azeotropic point with the help of synthetic molecular sieves effectively.
Molecular sieve Dehydration Process requires a high level of purity in the range of industrial and food applications. Type 3A molecular sieves are considered as the most effective type to dry ethanol. In the ethanol dehydration process, the hydrated ethanol vapors are passed through the molecular sieve bed. As the vapors pass the sieve bed, in the very first step water gets adsorbed by the pores of the adsorbent structure. The process of adsorption continues until the possible water adsorption from these vapors gets completed or molecular sieve gets saturated.

The process of transferring the water from hydrated ethanol vapors to the activated molecular sieve occurs through an area or a zone where the reduction of water content carries from its inlet to outlet concentration. This master transfer zone provides one active bed for transporting the dehydration while another bed for regeneration. The movement from one bed to another is handled and controlled using the powerful valves and automation. The pure ethanol after the dehydration process using molecular sieves can be used as a fuel in automobiles and other useful applications.

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