A STATIC MODEL OF THE REACTOR OXIDATION OF AMMONIA IN THE MANUFACTURE OF NITRIC ACID

Abstract

Nitric acid is one of the dangerous types of production of highly potent acids. At one stage of the process of oxidation of ammonia to yield nitric oxide. The oxidation occurs under the action of the platinum catalyst also may be possible to use other catalysts such as chromium oxide. To get nitric oxide use of the three layer oxidation reactor, in which alternately pass through the catalyst layers, the ammonia mixed with air. Under the action of a catalyst increases the reaction rate, which further affects the temperature change in the catalyst and the pressure change in the object. To study the temperature mode of operation of the oxidation reactor, namely the static characteristics of the proposed model to build static that will display the state of the object when the temperature of the input flow and temperature in the reactor. To do this, make an equation of material balance. From the total range of tasks of production of nitric acid, in which there is a need to identify the change in the properties of transients, select the most important, in our opinion is the task of control and regulation in automated control systems of these technological processes. One of the requirements to the automatic control systems is the requirement to maintain a current value regulowane values specified value at any given point in time and compliance with the regulated value of the process parameters. Therefore, the modeling of objects for automatic control systems are important. In addition to the objectives of the study parameters of the process, there is also a more difficult problem study of the changes of non-stationary modes of the reactor oxidation of ammonia.