Dry ice manufacturing starts with liquid carbon dioxide held under pressure (300 psi) in bulk storage vessels. To begin making dry ice, the liquid C02, is sent through an expansion valve into an empty chamber where under normal atmospheric pressure it flashes into C02 gas. This change from liquid to gas causes the temperature to drop quickly. About 46% of the gas will freeze into dry ice snow. The rest of the C02 gas, is released into the atmosphere or recovered to be used again. The dry ice snow is then collected in a chamber where it is compressed into blocks, or various sized pellets to meet customers requirements. The denser the dry ice is, the longer it will last, the easier it is to handle, and the better it will perform when blast cleaning. Also the
There are three major types of dry ice machines.
The first is a dry ice block maker. It can produce a 220 pound solid block which is usually cut into four 55 pound blocks about 11 inches cubed. Newer block machines make a 50 pound or even a 10 pound block. Next there are machines that produce pellets from smaller than 1/8 inch for dry ice blast cleaning to 3/4 inch in diameter. Sometimes these machines include additional parts for blast cleaning. There are only about six major manufacturers in the world. Several additional companies manufacture small dry ice makers that connect to a CO2 tank and make 5 to 10 pound blocks of lower density dry ice.
Luckiest, thank for your response. Yes I have researched into the manufacturing process and all, that really I have a B.S. Chemistry. However I am looking for information on how viable this would be for a small business. All I see are big companies and I am thinking "how will I be able to compete with these established businesses?" I'm more like in the fact finding stage so that I don't get burned beyond repair. I would like to get in touch with someone or an organization that is involved and will be willing to give information.