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Chuangge-Tech adsorbent is used for removing water from ethanol in a wide range of applications

Production information

Chuangge-Tech adsorbent is used for removing water from ethanol in a wide range of applications, ranging from fuel and industrial ethanol grades, to beverage and pharmaceutical grades. In these latter applications, high purity ethanol is required, and the presence of byproducts is undesirable.
When ethanol is used in fuel, it is blended with gasoline. For the blend to be stable, water must be removed; yet because ethanol and water form an azeotrope, not enough water can be removed from the ethanol solution using simple distillation. 
When ethanol purity above 95% is required, molecular sieves are the most widely used and globally accepted solution. By partnering with engineering companies that have built, and still build, the majority of all ethanol plants
worldwide, we have developed and continue to supply CG-318, the preeminent type molecular sieve for ethanol dehydration. CG-318 is typically used in traditional vapor phase pressure swing plants, but can also be used in small liquid phase units.
 
Ethanol Dehydration Unit

CG-318 is the potassium form of the A type zeolite structure and has an effective pore opening of 3 angstroms. This molecular sieve is designed for high water content in the feed stream, elevated temperatures, and quick cycling — all factors inherent in the ethanol drying processes.

 
Technical parameters

Items

4×8 mesh

8×12 mesh

Pore size Å

3

3

Buck density(kg/m3)

710

710

Adsorption heat kJ/kg H2O

4186

4186

Crushing strength (N/P)

80

35

Static water adsorption

21%

21%

Moisture (wt, %)

<1.5%

<1.5%

 
Characteristics of molecular sieve for ethanol dehydration
The spherical shape of the product ensures that all physical forces applied are compressive. Molecular sieve adsorbent beads are much stronger under compressive forces as compared to the tensile forces acting on extruded (rod or pellet) shapes.
The smooth, hard outer surface resists attrition, thereby minimizing dust formation and bead weakening. As a result, the product as packaged contains very low dust and generates very little dust during loading.

From the start, our technical service engineers can provide conceptual advice and design support for your project. As the project moves forward, we can review the detailed designs and answer any questions regarding our products and their use in your operation. Our team provides support with consultation, training and startup assistance when the unit is commissioned. After sales service is available if service is required.
Optimization of an ethanol plant’s molecular sieve beds can be critical to meeting economic and production objectives in today’s ethanol market. To help meet that need, Chuangge-Tech offers optimization services that can result in increased ethanol production and significant cost savings for the producer. Chuangge-Tech also offers sample testing services to help evaluate the condition of the molecular sieve and determine the remaining life on the installed beads.

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