dry ice 2

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Information about dry ice 2

Published on July 7, 2010

Author: sumitrocks2009

Source: authorstream.com

DRY ICE : DRY ICE Presented By - sumit khune Presentation of Dry Ice Blasting : Presentation of Dry Ice Blasting :  Dry Ice is made of liquid CO2 (carbon di-oxide) and is TOTALLY FREE OF WATER. Liquid CO2 is injected into a production cylinder at 14 -17bar (200-290 psi), where it expands at atmospheric pressure into CO2 snow. This snow is then compacted by rod & piston into solid CO2 = Dry Ice. Different types of Dry Ice machines produce various forms of Dry Ice WHAT IS DRY ICE? PROPERTIES OF DRY ICE : PROPERTIES OF DRY ICE Temperature of -78.5 Celsius ( -173° F) Specific Weight is approximately 1450kg/m3  Dry Ice is free of water (pure CO2 = 100% dry) Dry Ice is not conductive Dry Ice converts to CO2 vapor on surface impact Dry Ice is free of oxygen (anti bacterial) Dry Ice is not toxic (food grade CO2) DRY ICE BLASTING : DRY ICE BLASTING Dry ice blasting is a form of abrasive blasting, where dry ice, the solid form of carbon dioxide, is accelerated in a pressurized air stream and directed at a surface in order to clean it. History - The first patent regarding dry ice technology was U.S. Patent 2,421,753, issued in 1947. The first patents regarding development and design of modern-day single-hose dry ice blasting technology were awarded to David Moore of Cold Jet, LLC in 1986, 1988 DRY ICE BLASTING? : DRY ICE BLASTING? Dry Ice blasting is similar to sand blasting. Both use compressed air as kinetic energy, feeding particles into a high velocity air stream from a blasting unit, via a hose, through a nozzle onto a surface. Dry Ice blasting does not compete with sandblasting. It has different properties. Sand blasting is abrasive (corund, ash, steel shot, glass beads, etc.). Along with the contaminate it removes surface material. It is therefore ideal to remove rust corrosion, which Dry Ice cleaning cannot. Sand blasting produces secondary waste, which needs to be disposed of at considerable cost. Dry Ice blasting is not abrasive. It does not remove surface material (given a trained operator). Dry Ice blasting does not produce secondary waste. The Dry Ice material sublimes to CO2 vapor on impact. Only the contaminates have to be managed. HOW IT WORKS? : HOW IT WORKS? Using a cleaning process similar to sand blasting or high-pressure steam cleaning, Dry Ice Blasting uses dry ice pellets and compressed air. MORE PROFIT LESS WASTE… : MORE PROFIT LESS WASTE… Dry Ice Blasting minimizes waste, saves time, and saves money. Dry Ice Blasting avoids many of the risks and costs associated with other cleaning methods. ECO-FRIENDLY METHOD : ECO-FRIENDLY METHOD Dry Ice Blasting is an Eco-friendly, revolutionary method of cleaning using natural materials. PAYS FOR ITSELF… : PAYS FOR ITSELF… The Dry Ice Blasting process eliminates so many of the negative elements associated with cleaning that it literally pays for itself! Dry Ice Blasting eliminates the need for: Disassembly and relocation solvent Hand scrubbing Equipment damage Drying time Cool down time USES : USES Dry ice blasting can be used to clean food processing equipment to effectively decontaminate surfaces of Salmonella enteritidis, E. coli, and Listeria monocytogenes such that these microorganisms are not detectable using conventional microbiological methods. It may also be used to clean some equipment without disassembly and without producing fire or electrical hazards. The EPA recommends dry ice blasting as an alternative to many types of solvent-based cleaning. Dry ice blasting can clean numerous objects with differing, complex geometries at once. USES : USES Printing Industry - Dry ice blast cleaning has proven itself extremely useful, effectively removing dry ink build-up from: Gears, Deck Guides, Side Frames, Gripper Bars, Roller and Roller Cups, and Sensitive Electrical Components. USES : USES Dry Ice and the Food Industry - Within the food industry sanitation and cleanliness are a major concern. Food and carbon build-up can inhibit the performance and health standards of costly equipment. Dry ice blasting can replace some processes using water, detergents, and sanitizers. USES : USES Dry Ice in Marine & Boating -Sensitive areas such as ship hulls made of aluminum and fiberglass can be cleaned without damage to their gel coat. Wine & Beverage Processing – Dry ice blast cleaning is experiencing rapid growth in many applications of wine and beverage processing. SAFETY : SAFETY Though not toxic, carbon dioxide can displace oxygen resulting in asphyxia if equipment is not used in a ventilated area. In addition, because carbon dioxide is heavier than air, exhaust vents are required to be at or near ground level to efficiently remove the gas. Last slide : Last slide

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