Nitric acid by oxidation, ammonia

A plant is producing nitric acid by oxidizing ammonia with air. The gases leaving the oxidation unit are cooled to condense out essentially... 

Preparation of Nitric Acid by Oxidizing Ammonia. Assemble an apparatus as shown in Fig. 90. Pour a 2% ammonia solution into flask 1. Put a loose layer of freshly roasted platinized asbestos into the middle of tube 2 over a length of 4-5 cm. Pour a neutral litmus solution or several drops of methyl red into flask 3 and connect the short tube of this flask to water-jet pump 4. Heat the platinized asbestos slightly with the flame of a gas burner and pass through it... 

Bamag-Meguin A process for making nitric acid by oxidizing ammonia. It differs from similar processes in isolating liquid dinitrogen tetroxide as an intermediate. Operated in Silesia in the early 20th century. 

Grande Paroisse A process for making nitric acid by oxidizing ammonia claimed to be self-sufficient in power. 

Schematic (block) diagram production of nitric acid by oxidation of ammonia...

The oxidation of NO to NO2, which is an important step in the manufacture of nitric acid by the ammonia-oxidation process, is an unusual reaction in having an observed third-order rate constant (k o in ( rm) = kso Oc02) which decreases with increase in temperature. Show how the order and sign of temperature dependence could be accounted for by a simple mechanism which involves the formation of (NO)2 in a rapidly established equihbrium, followed by a relatively slow bimolecular reaction of (NO)2 with O2 to form NO2. 

Devices for compressing gases are used extensively in the chemical industry (see "High Pressure Techniques"), eg, in the manufacture of nitric acid by the ammonia oxidation process Compressors for transferring gases and vapors may be divided into vacuum pumps or exhausters (when the gas is below atmospheric pressure) and into fans, blowers, boosters and ax . I compressors (when the gases are above atmospheric pressure)... 

Qualitative flow diagram for the manufacture of nitric acid by the ammonia-oxidation process. 

Figure 2-1 presents a qualitative flow diagram for the manufacture of nitric acid by the ammonia-oxidation process. Figure 2-2 presents a quantitative flow diagram for the same process. With the information from these two figures, prepare a quantitative energy balance for the process and size the equipment in sufficient detail for a preliminary cost estimate. 

Process for Manufacture of Nitric Acid by Oxidation of Ammonia... 

Nitric oxide is prepared as an intermediate for the manufacture of nitric acid by oxidation of ammonia above 932°F (5(X)°C) with a platinum catalyst. 

H.20 The first stage in the production of nitric acid by the Ostwald process is the reaction of ammonia gas with oxygen gas, producing nitric oxide gas, NO, and liquid water. The nitric oxide further reacts with oxygen to produce nitrogen dioxide gas, which, when dissolved in water, produces nitric acid and nitric oxide. Write the three balanced equations that lead to the production of nitric acid. 

In the manufacture of nitric acid by the oxidation of ammonia, the first product is nitric oxide, which is then oxidized to nitrogen dioxide. From the standard reaction enthalpies... 

C. H. Chilton The Manufacture of Nitric Acid by the Oxidation of Ammonia (American Institute of Chemical Engineers). 

Ostwald The basis of the modem family of processes for making nitric acid by the catalytic oxidation of ammonia. 

SABAR [Strong acid by azeotropic rectification] A process for making nitric acid by the atmospheric oxidation of ammonia. The nitrous gases from the oxidation are absorbed in azeotropic nitric acid in the presence of oxygen under pressure ... 

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