CHEMCAD Dynamics is a remarkable tool for operator training. The example shown is a distillation column that looks like a Piping & Instrument Diagram. Each control loop can be modified by changing the proportion, integral and derivative values. The model responds similarly to a plant distillation column. Liquid holdup in the column, heat exchangers and even piping can be … [Read more...]
Sodium Hydrosulfide (NaSH)-An Alternative to Sulfur Production
Introduction Sodium Hydrosulfide (NaSH) solution is an alternative product to sulfur from hydrogen sulfide. Much hydrogen sulfide ends up on solid bed medias such as iron sponge or Sulfatreat®. This is disposed of in landfills. These processes are justified in most cases. Depending on your production rate of hydrogen sulfide, a Claus Unit may be just what you need. However, … [Read more...]
Hydrogen Sulfide Removal from Refinery Gas Streams
Hydrogen Sulfide (H2S) Hydrogen Sulfide (H2S) is a colorless, flammable and extremely dangerous gas. It is found in many refinery streams such as crude oil, asphalt, residual fuel, mid distillate, gasoline and blend components. As well as natural gas, propane and LPG. It is heavier than air and can travel along the ground. Protection Against H2S Exposure In concentration as … [Read more...]
Using ChemCad to Debottleneck Chemical Plants
Having a bottleneck in your chemical plant will decrease efficiency and/or throughput. This can be difficult to pinpoint. If you make changes by guessing where the bottleneck is, this can be very costly and may not even solve the issue. COSTELLO’s professional engineers are experts at helping to debottleneck plants by using ChemCad, which can save you from a major headache in … [Read more...]