Membrane separation nitrogen making machine

In 1, the membrane separation principle

Usually all gas can permeate through the polymer membrane, the process is the gas molecules are adsorbed and dissolved in the first film high side surface, and then with the help of a concentration gradient in the film diffusion, the last from the membrane to the low pressure side of the analyzed, the result is a small molecule and stronger polar molecules (such as water vapor, oxygen, carbon dioxide) by faster, in the permeate side of the membrane is concentrated; and large molecules and less polar molecules (such as nitrogen, argon) through a speed slower, stranded on the membrane retentate side so as to achieve the separation of a gaseous mixture is enriched to.Membrane separation is the use of various gases in polymer membrane permeation rate is different, for gas separation, the separation of driving force for gas on both sides of the film pressure difference, so the membrane gas separation without transformation, regeneration is not needed, it has the advantages of simple equipment, operation and maintenance and low cost.

A membrane separator (assembly) consists of tens of thousands of root of hollow fiber membrane assembly is mounted in a casing, its structure is similar to the tubular heat exchanger, which can be in the smallest space provides maximum separation membrane surface area, so the membrane separation system has advantages of small occupation area, light weight, high separating efficiency.Membrane separation nitrogen producing device can provide clean 90-99% nitrogen, can also provide 28-40% oxygen.

2, the process of producing nitrogen system

Membrane separation nitrogen producing device schematic diagrams are as follows: the separation process (see Annex 1 flow diagram)

(1), the production process overview:

Air compressor, air-cooled aftercooler cooling to 1.3Mpa pressure entering the gas-liquid separator, precise filter, heat regeneration dryer compressed air to remove the liquid, oil mist, after an ultra precision filter, for removing particles and oil mist, the compressed air in the oil content is reduced to below 0.01ppm, and can be filtered to remove all of the solid particles diameter greater than 0.01mm; into the membrane separator system for separating.Compressed air by membrane separation, can be slightly lower pressure than the inlet pressure of high pressure nitrogen, nitrogen concentration can reach above 99.5%, nitrogen gas dew point can reach -40 ℃.

(2), device components performance index:

1) screw type air compressor:

Exhaust pressure flow:: ≥ 1.3MPa ≥?M3/min

Air quality: oil content ≤ 3ppm ≤ 3 μ m containing particles: ring temperature +12 ℃ temperature

2) main line filter

??Company's products, can remove large amounts of liquid and more than 3 μ M size aggregate.

3) precision filter

??Company's products, liquid water and oil can be filtered, filtering as small as 1 μ M size of solid particles.

4) a freeze dryer

Using the principle of refrigeration cooling of compressed air, the compressed air in the water vapor supersaturation in low temperature, condensation, separation of compressed air in the water, so that the pressure of the compressed air dew point down to 2-10 ℃.

Unit configuration: equipped with a smooth surface tube heat exchanger in the dryer, the period of working life, the surface is not contaminated, and always maintain a high heat transfer efficiency.

Special designed water separator, the internal integrated agglomerate filter two grade separation, effectively prevent the condensed liquid is taken out from the dryer, assurance of dryer outlet dew point temperature.

Refrigeration system with automatic temperature control, in the range of operating conditions, without manual regulation, can maintain the design temperature.

 

Ultra precision filter

??Company's products, for the coalescence of small water vapor and oil mist, which can filter solid particles as small as 0.01 μ M.

Compressed air through the filter purification treatment to achieve:

Maximum oil content? @21 ≤ 0.01 ℃: mg/m3; solid particle removal precision: ≤ 0.01 μ M

3, membrane separation nitrogen system

Membrane group: the PARKER or UBE standard series film group

Device comprises a bracket, frame: the durable steel structure device.

Nitrogen making machine internal piping and valves are all made of stainless steel to improve durability and corrosion resistance, to extend the system lifetime.

All electrical appliances are installed in the protective conduit using standard cable connection.

In 4, the product gas purity control system

? by oxygen analyzer and purity control valve, oxygen analyzer for continuous monitoring of nitrogen product gas purity oxygen content, by regulating the control valve, control the purity of nitrogen.

? oxygen analyzer can ensure product nitrogen oxygen content accurately, ensuring safe and reliable system operation, product purity of nitrogen in 95%-99.5%.The equipment in the start within 30 minutes after the output of the nitrogen that can achieve qualified purity.

5, quality assurance

1), the supplier to provide the technique is advanced and reliable, equipment, instrument and materials are new, and in accordance with the contract and relevant international standards.

2), the supplier to ensure the integrity of the equipment.The equipment installation and deb ing, the user does not need to add other equipment, equipment can be normal operation.

3), quality assurance: the quality guarantee period starts after twelve months, but not more than eighteen months after delivery of the goods.Whichever whichever is first.Membrane group quality guarantee period of one year, oxygen analyzer sensor quality assurance for a period of two years.During the warranty period, all because of product design, manufacturing or material causes damage, the party responsible for repair or replacement of parts, costs incurred by supplier burden.But because of the need to maintain, maintain undeserved loss caused by the buyer's sole responsibility and repair costs.

In 6, after sale service

(1), and information technology services:

1), to provide life-long equipment technical advisory;

2), to provide detailed instructions for using the device;

3), to provide equipment on-site installation guide;

4), to provide the operation and repair personnel training;

(2), technical training: (export equipment, to on-site training, required consultation)

Content: technology, instrumentation and control object: Equipment Management

Location: the factory in time: concentration theory training for 1 days, from 1 to 2 days of operation training

Training data: operation manual security technical manual

(3), after sale service

1). To ensure that the equipment is new, and ancillary works and equipment are complete, 24 hours of continuous work for a long time.

2). To establish user files stored in the computer, to remind the user of equipment maintenance, replacement of wearing parts of time.

3). Nitrogen plant since commissioning qualified date free warranty for 12 months;

Special warranty: electromagnetic valve commissioning qualified date free warranty for 24 months;

Molecular sieve under the state of normal use, service life is up to 8 ～ 10 years.

 

7, customer list:

Serial number customer name type index notes

1) the German Atlas MD1.8N-35 35Nm3/h 98% two sets / factory in Germany

2) the United States of America AREZ company MD2N-100 100Nm3/h 99% A / Guangdong factory

3) the United States of America CYTEC company MD1.5N-45 45Nm3/h 95% A / Shanghai factory

4) the German GETRAG company MD2.5N-80 80Nm3/h 99.5% A / Jiangxi factory