| Abstract [eng] |
Nitric acid is one of the most important compounds in the chemical industry. Most of the acid is used for the production of calcium ammonium nitrate and ammonium nitrate. The main raw material of nitric acid production is ammonia, which is produced from natural gas. Natural gas is a non-renewable natural resource, so during nitric acid production ammonia consumption must be kept to a minimum. In this master‘s thesis, the study was made to find out if NO oxidation reaction on platinum/titanium dioxide catalyst has an impact on product‘s yield and process efficiency. The study shown that using platinum/titanium dioxide catalyst in NO oxidation reaction can produce 3,2 % more pure nitric acid using the same amount of ammonia. Nitric acid production aggregate is located in Jonalaukis village, Jonava district. Factory is located near A6 highway in convenient location. The area of the site is 62,5 a and aggregate area is 1494 m2. Site has engineering communication systems like water, electricity, steam, sewage and technological air. Economic calculations was made to find out how much such modernization would cost, how much manufacture cost would be reduced, final price of product and how long would it take for investments to pay off. The cost of one tonne of ammonia is 7,40 Eur lower and 1,868 million Eur is saved throughout the year after reconstruction. The investments would pay off during 1,67 years. Analysis of occupational safety and health was performed. The characteristics of the designed object, occupational risk assessment, occupational safety, occupational hygiene and fire safety are presented. Explosive and flammable substances were identified and the categories of premises according to the fire risk were determined. An environmental impact assessment has been made, air pollutants and their quantities have been identified. Other wastes generated during production and handing methods with them have also been identified. |
