Best Choice Alcohol Permeation Membrane Ethyl Acetate-Ethanol Close-Boiling Point Membrane Module

• Membrane Type: Hollow
• Type: Gas-permeable membrane
• Material: Hollow Fiber Polysulfone
• Certification: ISO
• Purity: 95%-99.5%
• Pressure: 5bar-25bar
• Model NO.: WOBO-2512
• Warranty of Core Components: More Than 5 Years
• Production Rate: 99.8%
• Core Components: Pressure Vessel. Hollow Fiber
• Potting Materials: Epoxy
• Characteristic1: Barrier Separation
• Characteristic2: Simple Structure/Operation
• Characteristic3: Dust-Free Sterility
• Characteristic4: Low Energy Consumption
• Characteristic5: Low Investment
• Transport Package: Wooden Box
• Specification: Customized Size
• Trademark: WOBO
• Origin: China
• HS Code: 8421991000
• Production Capacity: 5000 Pieces/Month

Product Description

Boiling Separation for Efficient Recovery! Innovative Tech for a Cleaner Production!

Technical Principle

The main function of the azeotropic separation membrane is to separate azeotropic substances generated in the production processes of industries such as chemical and pharmaceutical. It effectively breaks down the composition of azeotropic substances, and it can be coupled with distillation processes, significantly reducing the energy consumption of the original distillation unit, achieving energy savings, and lowering production costs. Additionally, it can be integrated with reactive distillation columns to form a membrane reactor, promoting the progress of reactions, increasing conversion rates, improving production capacity, and reducing costs.

The azeotropic separation membrane leverages the differential permeation rates of various components involved in the formation of binary (or multicomponent) azeotropes within the membrane. This allows for the redistribution of concentrations of binary
components on the upstream and downstream sides of the membrane, breaking the original azeotropic point. As a result, two streams of non-azeotropic materials are obtained, reducing the difficulty and energy consumption associated with material separation.

Integrated Process Schematic

Integrated Process Flowchart

Model		WB-LSGF-80
Product Specifications:	Length/mm	802
	Inner diameter/mm	7.3
	Outer diameter/mm	12.8
	Material	High-purity aluminum oxide, zirconium oxide, polymers, etc.
Operating Parameters	Operating method	Cross-flow filtration
	Installation	Horizontal/Vertical
	Permeation mode	External pressure
	Feed status	Liquid/Gas
	Feed temperature/°C	0~70
	Operating pressure/MPa	≤1.0
	pH range	1~14

Membrane Separation Process

Organic Azeotropic Separation
This device is a complete set of membrane separation equipment before entering the pressurized distillation. The core function of this device is to increase the concentration of DMC (dimethyl carbonate) in the DMC/methanol azeotropic composition. This effectively breaks down the original azeotropic composition of DMC/methanol, significantly reducing the energy consumption in the subsequent distillation stages.

Advantages of the System:

(1) The integrated new process of membrane and distillation allows the use of a lower-energy-consuming atmospheric pressure distillation column instead of a high-energy-consuming pressurized distillation column.

(2) After a single pass through the membrane in this process, a relatively high concentration of DMC (dimethyl carbonate) product can be obtained through distillation at lower pressures. In contrast, direct pressurized distillation inside a column requires multiple gas-liquid equilibrium stages to achieve DMC product.

(3) The entire operating conditions of the integrated new process involving membrane and distillation occur at positive pressure and around 70°C for the separation of DMC-methanol, while pressurized distillation columns require separation at high pressure and temperature around 170°C. Therefore, the new process effectively reduces operational energy consumption and enhances the safety of the entire system due to less stringent separation requirements.

(4) The new process is not only feasible but also economically advantageous.

DMC/Methanol Azeotropic Separation
The process involving a reaction tower, membrane, and pressurized tower, when compared to traditional methods, results in a cost saving of 61% per ton of DMC (dimethyl carbonate). For a set of membrane equipment with an annual production scale of 20,000 tons, this translates to an annual cost saving of over 15 million RMB. Breaking the azeotropic equilibrium system, this process efficiently achieves separation tasks that are challenging for traditional methods such as distillation, extraction, and adsorption, with high efficiency and low energy consumption.

 

Process Advantages:

 

* Short processing time
* High separation efficiency
* Low load on the pressurized tower
* Minimal intermediate circulation
* Increased production capacity of the reactive distillation column
* 70% reduction in energy consumption

Advantages and Functions

1). Utilizing azeotropic separation membranes breaks the bottleneck of methanol-dimethyl carbonate azeotropes, altering the relative volatility of azeotropic substances and reducing the difficulty of separation.

2). Employing azeotropic separation membrane coupling technology reduces the operating pressure of the high-pressure column (0.7→0.5 MPa), increasing the yield of dimethyl carbonate (37%→72%).
3). The membrane separation system, coupled with high-low pressure distillation columns, reduces steam consumption to only 30-50% of traditional variable pressure distillation processes. The processing capacity of the high-pressure column is only 40% of that in traditional variable pressure distillation processes, and the processing capacity of the atmospheric column is only 60%.
4). Through membrane-coupled processes, the purity of DMC (dimethyl carbonate) is further enhanced, enabling the production of battery-grade DMC.

5). Azeotropic membranes do not introduce impurities during the application process, enhancing product purity.

6). The separation process operates continuously at room temperature and atmospheric pressure, making it simple, highly safe, easily controllable, and energy-efficient.

7). Azeotropic membranes use ceramics as a support layer, providing high-temperature resistance, pressure resistance, and low resistance.

 

Azeotropic Systems Applicable:

Dimethyl Carbonate-Methanol	Ethyl Acetate-Ethanol	Water-2-Methylpyridine
Acetonitrile-Methanol	Toluene-Methanol	Propylene Glycol Methyl Ether-Water
Acrylonitrile-Methanol	Propyl Ether-Methanol	Ethylene Glycol-Chlorobenzene
Methyl Propionate-Methanol	Toluene-Ethanol	Formic Acid-N-Octane
Acetonitrile-Ethanol	Ethyl Acetate-Ethanol	Formic Acid-Chlorobenzene
Isopropyl Acetate-Methanol	N-Octane-Ethanol	Acetic Acid-Chlorobenzene
Acetone-Methanol	Water-Pyridine	Organic Acid-Organic Solvent, Etc.

 

Detailed Photos

 

Project Case

 

 

Company Profile

Customized on demand

 

 

WOBO Group has been engaged in the cryogenic and air separation industry for decades. It operates a variety of products such as cryogenic vessels, air separation equipment, chemical storage and transportation equipment, etc. It has always been our aim to provide customers with the best products and solutions.

WOBO Group has technically cooperated with a number of large-scale famous membrane manufacturers, and jointly developed with well-known domestic universities and colleges, and established a comprehensive laboratory for production inspection and testing. At present, WOBO membranes have been applied in more than 30 countries around the world.

 

 

Why choose us?

WOBO offers tailor-made solutions regardless of size, quantity or special requirements. In addition to a complete range of standard products, WOBO will always actively and timely meet the various needs of customers.

Regional advantage
Having successfully established its own business in the Asia Pacific region, WOBO has a wealth of knowledge and experience in the local market to provide and perfect competitive cost-effective solutions for customers. KL-AIR has exported products and systems to more than 20 countries including China, Japan, Australia, Turkey, the United Kingdom, and the United States.

Technological innovation
More than 18 years of rich cases have been accumulated through continuous cooperation with our loyal customers. Continuous testing and improvement, coupled with continuous R&D investment, has enabled KL-AIR to have a wealth of patented products and solutions.

Professional comprehensive team service
WOBO's team of R&D experts has the most professional experience and is responsive to customers' needs. From design and manufacturing to fully tailored solutions to operational training and consulting services, KL-AIR is a one-stop supplier for all of our customers' gas separation requirements.