SU969698A1 - Method for automatically controlling oxidation process - Google Patents

Description

one

; The invention relates to methods: controlling the processes of oxidation by executing the interaction of the liquid phase with a gaseous oxidizing agent, and can be used in the chemical industry.

There is a known method of automatically controlling chemical reactions by changing the component supply by changing the flow rate of the gas phase at the outlet.

However, this method of control does not ensure the ecotoxicity of the oxidation process, since it does not take into account the economics of the oxidation process, since it does not take into account the loss of oxidizing agent with the exhaust gases.

The closest to the present invention is the method of controlling the oxidation process by regulating the supply of oxidant depending on the degree of oxidation, consumption of raw materials, temperature and pressure t23.

The known method does not provide the minimum cost of the oxidizing agent for processes with a given degree of oxidation and subsequent dilution of the gas mixture at the outlet of an inert gas to ensure explosion safety .. /

The goal is to increase the specific consumption of the oxidizing agent at a given degree of oxidation.

The goal is achieved by the fact that the additional oxidant consumption rate is adjusted by the amount of gas tiHepTHoro for the dilution of WASTE 1F1X gases.

The drawing shows a block-10 scheme for the implementation of the proposed method.

An oxidant (oxygen) and SF (hydrogenated working solution) are fed to the oxidation column 1.

15 Sensor 2 consumption of raw materials and sensor 3. oxidation degrees are connected to computing device 4, which calculates the magnitude of the control action. The consumption of oxidizing gas is regulated by organ 5. At the input of the computer, the temperature sensor 6 and the sensor 7 of the pressure in the column, are also connected. From column 1, waste is continuously diverted

25 gases. The concentration of oxidant in the exhaust gases is measured by sensor 8, and the regulator 9 with regulator and organ 10 is stabilized at an explosion-safe level by supplying nitrogen to

30 top of the column.

The nitrogen flow sensor 11 is connected to the correction unit 12 to the input of which the output of the computing device 4 is connected. Output signal,. 12 is connected to the regulator of the feed unit 5 to be oxidized to the column 1., l. , ,;

The control method is carried out as follows. ,.: The computing device 4 calculates the magnitude of the control action on the correction block 12 by sensing llamas from the sensors: 2 raw materials consumption, 3. oxidation state, 6 temperatures and 7 pressures. In block 12 {the control action adjusts IB depending on the signal from the nitrogen flow sensor 11. The output Gcal from the correction unit is supplied to the regulating organ 5, and it emits the magnitude of the oxidizer consumption (oxygen. The sensor 8 for the end of oxygen in the exhaust gases and the regulator 9 acts on the regulator 10 and sets the oxygen concentration s. gases.

The advantage of a pnocot Ib as compared with the known is that it takes into account that the unit cost of oxygen per unit (u) of product is 2-3% at a given oxidation state.

Claims (2)

1. Authors certificate of USSR № 352667, cl. G 05 D 27/00, 1969. 2. Patent of the GDR 114471, cl. 42 R 27/00, 1975.  "but