(a) Type size and service pressure. In addition to the requirements of § 178.35 cylinders must conform to the following: (1) A DOT-3AA cylinder is a seamless steel cylinder with a water capacity (nominal) of not over 1000 pounds and a service pressure of at least 150 psig. (2) A DOT-3AAX cylinder is a seamless steel cylinder with a water capacity of not less than 1000 pounds and a service ...
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Learn MoreIn the monohydrate process trona is ground and calcined (150-300 °C) to a crude soda ash in either a rotary gas-fired or coal grate-fired calciner. The calciner product is then leached with hot water and the clear hot liquor is sent to a set of evaporative crystallizers (40-100 °C) where sodium carbonate monohydrate is produced. ...
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