Bry-Air has the widest, and the world’s most energy efficient range of Desiccant Dehumidifiers and Dryers, for every dry air application, in every industry. Thousands of our customers appreciate our contribution to improvement in their product quality, productivity and profitability.
“Distributed control system (DCS) is dedicated systems used for controlling manufacturing processes that are continuous or batch oriented, such as oil refining, petrochemicals, central station power generation, pharmaceuticals, food & beverage manufacturing, cement production, steel making, and paper making. Apart from DCS, servers and control rooms have more critical equipment for BPOS, IT/ ITEs etc. The presence of corrosive gases presents in the facilities mentioned above causes micro – corrosion. Corrosion if left untreated for long is responsible for malfunctioning, retarded performance and under extreme circumstances even electronic equipment failure thereby leading to process failures. While measures are in place for controlling temperature and humidity, gaseous contamination is generally overlooked. In addition to temperature and humidity, gaseous contamination should also be controlled.
Corrosion of metals is caused primarily by the attack of gaseous contaminants and is accelerated by heat and moisture. Higher than permissible amounts of gaseous contaminants like sulfur compounds present in the form of H2S, SO2, SO3. Nitrogen compounds present in from NO, NO2, NO3 and Cl2 and Ammonia cause the electronic corrosion process. These react with the metal on ICs, and other electronic and electrical parts and form a non-conducting layer which resists current flow leading to failures. The severity of damage depends on the kind of gaseous contaminant.
Studies which have shown that atmospheres which cause corrosion above acceptable limits is as mentioned at right.
Process Industries and or IT industries having critical equipment in DCS rooms and or Server/ Datacom rooms can prevent downtime caused due to corrosion/ breakdown by installing a Bry-Air EcoScrub Air and Gas Purification System. Bry-Air’s Air and Gas Purification System removes corrosive gases by a process of Adsorption and Chemisorption using the BrySorb impregnated media. The Bry-Air EcoScrub is designed to maintain various electronic environmental standards such as ISA standard 71.04, IEC standard, Environmental standards followed by electronic manufacturers all over the world for smooth operation of electronics.
Bry-Air’s Airgineers have more than 40 years of experience and have installations in every nook and corner of the world.
| ISA Environmental Classes, Relative humidity less < 50% | ||||
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ISA Class G1
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ISA Class G2
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ISA Class G3
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ISA Class GX
|
|
|
Copper Coupon film thickness (angstroms)
|
0-299
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300-999
|
1000-1999
|
> 2000
|
|
Gas Concentrations (ppb, by volume)
|
||||
|
ISA Class G1
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ISA Class G2
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ISA Class G3
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ISA Class GX
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|
|
H2S
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< 3
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< 10
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< 50
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> 50
|
|
SO2, SO3
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< 10
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< 100
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< 300
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> 300
|
|
Cl2
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< 1
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< 2
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< 10
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> 100
|
|
NOx
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< 50
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< 125
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< 1250
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> 1250
|
|
HF
|
< 1
|
< 2
|
< 10
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> 10
|
|
NH3
|
< 500
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< 10000
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< 25000
|
> 25000
|
|
O3
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< 2
|
< 25
|
< 100
|
> 100
|
In this column, we will share with you regularly our experience in major application areas where usage of dehumidification is both extensive and essential.
for food, pharmaceutical, cosmetic and photography
Gelatin is a colorless and tasteless solid substance that is made from the collagen of animal’s skins and bones. Gelatin drying for food and medicines is a common practice.
Food: low fat and light foods, yoghurt, ice creams, jellied meat, confectionery, gelatin dessert. Gelatin is also used in mousses, cream fillings and whipped toppings because of its whipping and stabilizing properties. Gelatin is used to clarify wines, beer, apple juice and vinegar.
Pharmaceuticals: Tablets, emulsions, surgical sponges, ointments, salves, jellies, suppositories, plasma substitute for medicines, dietary/health supplements, syrups, etc. Gelatin is highly digestible and serves as a natural protective coating for medicines.
Gelatin has also been shown to benefit arthritis sufferers in a large portion of the cases and is observed to promote nail and hair growth. Photography: Photographic grade gelatin is used in all of the layers of a photographic product including the silver halide crystal-containing emulsion layer, coating layer, sub-coating layer, anti-halogen layers and non-curl layer.
Cosmetics: shampoos, conditioners, lipsticks and fingernail formulas.
The Gelatin Drying process involves passing gelatin through eight separate temperature zones where temperature is controlled within ±1ºC.Warm liquid gelatin that is obtained after hydrolysis is spread over a slowly revolving stainless-steel drum. Over this air is blown. The chill, dry air congeals the gelatin as the drum rotates and a elastic band rolls out at the other end of the drum.
The temperature, relative humidity and velocity of the air must be accurately controlled for effective and rapid drying of the gelatine. If the temperature is low, the gelatine band becomes brittle and snaps. If the temperature and humidity are too high, or air velocity too low, the gelatine will not solidify into a band. From the capsulating machines, the soft moist capsules are transferred to drying chambers.
Here the moisture from the gelatine shell must be removed gradually to prevent superficial hardening. Drying at elevated temperatures impairs product quality.
Bry-Air Dehumidifiers can maintain RH as low as 1% or even lower at constant level, regardless of ambient conditions.
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