ADCOA has had long experience in working with the major utilities and power circuit breaker manufacturers in the development and production of SF6 Circuit Breaker Desiccant Bags. These bags are designed to be suspended in the breaker housings to adsorb water vapor and other arc products.
Our Power Circuit Breaker Desiccant Bags are made from self extinguishing, non-dusting Dacron. In most of these bags, we utilize Type 4A Molecular Sieve as the active desiccant. Type 4A has been found to be the preferred desiccant for this application.
Circuit Breaker Desiccants have become a mandatory maintenance item for most breakers in use today. The 4A Molecular Sieve is a synthetically reconstituted alumina silicate which is generated and processed under stringent conditions to establish exact pore dimensions within the lattice of the molecules crystalline structure. These pores are created by removing the water of crystallization from the compound. In its dehydrated state, the Molecular Sieve exhibits a tremendous affinity for water and smaller hydrocarbons, adsorbing over twenty percent of its weight of such contaminates. The incorporation of Type 4A into the static drying system essentially eliminates the danger of arcing caused by gas contamination in the breaker housing.
ADCOA also offers a full range of desiccants for use as a bulk moisture drying bed in the circuit breaker door. These desiccants include Activated Alumina and Silica Gel. We package all of our Circuit Breaker Desiccant Bags in heat-sealed, vapor-proof foil enclosures to prevent contamination of the product prior to use. Packaged in this manner, we guarantee a minimum shelf life to two years.
Type 4A-Moisture Indicating Moisture-indicating Molecular Sieves are beads that have been chemically impregnated to display a blue color when fully activated by removing the water of hydration. When a gas stream is dried using this product, the blue color will turn to pink as water is adsorbed denoting saturation of the sieve. The sieve may then be reactivated at 200°C under vacuum or nitrogen atmosphere for several hours. More conveniently, the sieve may be replaced from fresh stock.
Type 4A Moisture-Indicating Molecular Sieve is the preferred adsorbent for static dehydration in a closed gas or liquid system. It is used as a static desiccant in household refrigeration systems, packaging of drugs, electronic components, perishable chemicals and as a water scavenger in paint and plastic systems. Also used commercially in drying saturated hydrocarbon streams.
Type 4A Moisture-Indicating Molecular Sieve allows the user to determine whether a bed of desiccant is nearing water vapor saturation. Moisture-Indicating Molecular Sieve can be used either ′′full-strength′′ to maximize the effect of the color-change indicator, or may be mixed with non-indicating product for a more economical approach to the application.
Grade AC Activated Charcoal is commonly used throughout the health physics industry as an air sampling trap. Contaminates adsorbed on the Activated Charcoal can be quantitatively determined and them compared to NIOSH Standards.
Activated Charcoal is used to adsorb trace quantities of contaminates, such as pesticide, from solvents. It is the ideal oil mist removal agent for compressed air.
It is also the preferred adsorbent for the trapping of hydrocarbons in inert gas streams. Coconut shell based Activated Charcoal.
Activation Metho - High temperature steam
Adsorption Characteristics - High efficiency removal of organic compounds in liquid or gas phase
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