Solid Waste Disposal

Solid wastes differ from air and water pollutants since these wastes remain at the point of origin until a decision is made to collect and dispose of them. There are several means of disposal available including recycling, chemical conversion, incineration, pyrolysis, and landfill. Federal regulations, local conditions, and overall economics generally determine which method is the most acceptable. RECYCLING AND CHEMICAL CONVERSION. Resource recovery is a factor often overlooked in waste...

The General Process

Fish Meal Process Flow Diagram

The process is to be carried out at a sufficiently low temperature for the biological substances to remain essentially unchanged, except for the removal of oil and water. The top temperature limit for the insoluble materials and the oils The raw fish as received are ground and delivered to a slurry tank where the pulped material is agitated. The slurry is then sent to cookers where the oil is extracted by a suitable solvent and the water is evaporated along with the solvent. The evolved vapors...

Plot The 1985 Purchased Cost Of The Shell-and-tube Heat Exchanger

The purchased cost of a shell-and-tube heat exchanger floating head and carbon-steel tubes with 100 ft2 of heating surface was 3000 in 1980. What will be the purchased cost of a similar heat exchanger with 200 ft2 of heating surface in 1980 if the purchased-cost-capacity exponent is 0.60 for surface area ranging from 100 to 400 ft2 If the purchased-cost-capacity exponent for this type of exchanger is 0.81 for surface areas ranging from 400 to 2000 ft2, what will be the purchased cost of a...

Problems

Using Chemical Abstracts as a basis, list the original source, title, author, and brief abstract of three published articles dealing with three different processes for producing formaldehyde. 2. Prepare, in the form of a flow sheet, an outline showing the sequence of steps in the complete development of a plant for producing formaldehyde. A detailed analysis of the points to be considered at each step should be included. The outline should take the project from the initial idea to the stage...