Coffee Packaging

gas generators

Nitrogen Supply For Coffee Packaging

www.domnickhunter.com

Coffee Packaging improving product quality and extending shelf-life

After roasting, coffee begins to oxidize, which destroys its flavor. Packaging coffee in a nitrogen atmosphere helps to maintain the integrity of speciality ground coffee by displacing the oxygen inside packs.

Nitrogen flushed packaging is often preferred over vacuum packaging because it gives a smoother packaging result. It is typically used for square bottom packs that have a one way valve to prevent air entering and pillow packs.

Nitrogen is an odorless and tasteless gas that is heavier than oxygen; therefore it pushes oxygen out from inside packs.

The shelf-life of roasted and ground coffee packed in nitrogen with a metallized film and residual oxygen content of between 2% and 3% can be doubled.

Benefits of using nitrogen: • Preservation of product flavor and aroma • Improved product color and texture • Extended shelf-life • Increased production efficiency through less

downtime

“We are set to recoup the capital cost of the nitrogen generator within 18-24 months, which is great because we will effectively be able to produce our own free nitrogen then, without the risk of production downtime.” James Sweeting, Lincoln & York, UK

HACCP and Air Quality – domnick hunter is a leading supplier of filtration and purification solutions, the OIL-X EVOLUTION range of compressed air filters are independently validated to ISO 8573.1:2001 quality standards and also meet recommendations of the British Compressed Air Society (BCAS) / British Retail Consortium (BRC) Code of Practice on Food Grade Compressed Air, designed to help food manufacturers comply with Hazard Analysis Critical Control Point (HACCP) regulations. domnick hunter also offers a range of sterile air and liquid filters, which can give point of use sterile/bacterial free N2 gas as an option. domnick hunter’s unique product offering can provide you with sterile point of use Nitrogen, providing peace of mind quality control. Sterile Filters

Compressed Air Filters

Why MAXIGA ? MAXIGAS is a cost effective alternative to other nitrogen gas sources, with no on-going costs such as refills, order processing or delivery charges. It is an effective gas delivery system for applications that require high flow rates and pressure levels. MAXIGAS gives manufacturers increased control over flow rates and requires minimal maintenance. It can also bring valuable space saving advantages.

MAXIGAS has many advantages over traditional nitrogen supplies including: Enhanced safety without the need to store or handle high-pressure cylinders Reduced downtime owing to an on-demand supply Cost savings following payback of up to 90% Dependable nitrogen supply for improved packaging efficiency

Food grade nitrogen at consistent flow, pressure and purity Compact space saving design Flexible modular design Very low cost of ownership No need for expensive civil works prior to installation Proven reliability Standard purities up to 10 ppm as standard Runs off a smaller compressor for even greater energy savings Obtains outlet pressures up to 232 psi (16 bar) without a booster

How it works MAXIGAS operates on the Pressure Swing Adsorption (PSA) principle to produce a continuous stream of nitrogen gas from compressed air. Pairs of extruded aluminum columns are filled with carbon molecular sieve (CMS). Pre-treated compressed air enters the bottom of the ‘on-line’ column and flows up through the CMS. Oxygen and other trace gases are preferentially adsorbed by the CMS, allowing nitrogen to pass through. After a pre-set time the on-line column automatically switches to regenerative mode, venting contaminants from the CMS.

Carbon molecular sieve

 

MAXIGAS120

FDA

Materials of construction independently verified to comply with FDA code of federal regulations title 21 ‘Food & Dairy’.

EIGA Meets European Industrial Gas Association Standards; nitrogen gas approved for use as a food additive.

Performance data Nitrogen outlet flowrate – scfh v Oxygen Concentration Model

10 ppm

100 ppm

500 ppm

0.1%

0.5%

1.0%

2.0%

3.0%

4.0%

5.0%

MAXIGAS104 MAXIGAS106 MAXIGAS108 MAXIGAS110 MAXIGAS112 MAXIGAS116 MAXIGAS120

71 104 136 169 207 278 344

109 169 224 278 333 447 562

284 425 567 715 851 1085 1315

311 469 633 791 944 1200 1456

496 747 998 1244 1495 1893 2291

627 938 1255 1565 1882 2384 2885

769 1165 1544 1931 2318 2935 3556

911 1364 1822 2275 2727 3464 4189

1025 1538 2045 2558 3071 3895 4713

1135 1702 2269 2836 3404 4315 5225

Performance data based on 102 psi g (7 bar g) air inlet pressure, 68°-77°F (20°-25°C) ambient temperature. Consult domnick hunter for performance under other specific conditions.

Technical specifications Ambient temperature range:

41 - 122°F (5 - 50°C)

Nitrogen outlet pressure:

up to 232 psi g (16.5 bar g)

Min. air inlet pressure:

87 to 261 psi g (6 to 18 bar g)*

Inlet air quality:

Dewpoint:

-40°F (-40°C)

Particulate: