SU1490132A1 - Apparatus for automatic control of coke gas supply to user - Google Patents

Abstract

The invention relates to devices for automatically regulating the suction of gas from coke ovens for supplying it to the equipment of chemical workshops and to ensuring the required pressure on coke oven gas consumers in the coke industry and improves the reliability of the device by stabilizing the mode of operation of gas blowers. The device contains a coke oven 1 connected to a gas collector in series with a gas collector, a gas cooler 3, an electrostatic precipitator 4 and a gas blower 5, the output of which is connected by a bypass line 9 to the inlet of the cooler 3, an electric actuator 6 of the blower 5, control valves 2, 10 and 8, installed in front of, on and after the bypass line 9, interconnected coke oven gas pressure sensor 11 in the gas collector, hydraulic mode stabilization controller 12 in the gas collector and valve 2 installed in front of the bypass line 9 interconnected The gas pressure gauge 16 after the supercharger 5, the pressure regulator 17 and the valve 8 installed after the bypass line 9 are connected in series with the current meter 7 of the electric drive 6, the transducers 13 and 14 and the regulator 15 whose output is connected to the actuator of the valve 10 installed on the bypass line 9. 1 Il.

Description

the circuit of the device is automatic

whom regulate the supply of coke oven gas to the consumer.

The device contains a coke oven 1, from the gas collector (not shown) of which, following a gas line of coke oven gas to the consumer, the following are placed: control valve 2, gas cooler 3, electric precipitator 4, blower 5 of type 1200-27-2 with electric drive 6 of type DAL 14-49- 4, to which the meter 7 is connected in the form of a current transformer, the output control valve 8, the output of the blower 5, bypass line 9 with the control valve 10, is connected to the inlet of the gas cooler 3, the pressure control circuit of the coke oven gas in the gas collector includes yes A pressure gauge 11 in the gas collector, connected through the regulator 12 for stabilizing the hydraulic mode in the gas collector with the actuator of the regulating valve 2, the load stabilization circuit on the supercharger includes a series-connected electric current meter 7 of the electric drive 6, an AC-842 converter 13, a converter 14 direct current type KSUZ model 2800D with control panel PP12-2, pneumatic proportional-integral controller 15 and control valve 10 with an actuator, Contours gas after controlling the pressure booster 16 includes a pressure sensor coupled to the controller 17 through the pressure stabilization in the discharge part of the pipeline with the actuator output of the control valve 8.

The device works in the following way.

In the process of coking from the coke oven 1 through its gas collector, the inlet

In this case, part of the coke oven gas from the pressure section after the supercharger 5 is bypassed through line 9 to the suction side of the gas cooler 3. The amount of gas to be gassed is determined by the position of the valve 10. Contour to stabilize the magnitude of the supercharger load

5 (its electric drive current) maintains the required load of the supercharger for the gas 5. When changing or

gas collectors of coke oven 1, or taken by consumers from the pressure section of the pipeline, causes either the regulator 12 to stabilize the hydraulic mode in the gas collectors, changing the position of the inlet valve 2, restores the

0

five

The discharge valve in the gas collector, or the pressure stabilizer 17 in the pressure section of the pipeline, changes the position of the outlet valve 8, restores the pressure of the coke oven gas in the pressure section of the pipeline. In any of these cases, the amount of coke oven gas passing through the blower 5 changes, and therefore the load of its electric drive 6 is changed, which in turn leads to a change in the current of the electric drive 6. The change in the current value of the electric drive 6 is monitored by the meter 7 and converted by the converter 13 from the output of which the DC signal is 0-5 mA, proportional to the measured current value of the electric drive 6 is fed to the input of the converter 14 and further to the input of the pneumatic proportional-integral controller 15, a signal from which via the actuator controls the position of the bypass valve 10, with

51

This changes the amount of coke oven gas suctioned through the bypass line 9 to the inlet of the gas cooler 3 and thereby changes the load of the blower 5 to the desired value. Thus, the circuit of automatic stabilization of the load of the blower returns to the previous equilibrium state when the amount of coke gas passing through the bypass line 9.

All three automatic stabilization circuits: the pressure regulation circuit of the coke oven gas in the gas collector, the load stabilization circuit on the supercharger, the pressure control loop after injection, operate simultaneously and continuously.

Claims (1)

The use of the proposed device in comparison with the known one allows to increase the reliability of the device operation by improving the stability of the operation of the supercharger, which is ensured by direct stabilization of the supercharger load according to the measured current of its electric drive. Invention Formula Device for automatic control of coke gas supply by 326 the customer, containing a coke oven with a gas collector connected in series by gas lines, a gas cooler, an electrostatic precipitator and a gas blower, the output of which is connected to the refrigerator inlet by a bypass line, an electric actuator of the blower control valve with an actuator installed on the bypass line, interconnected coke gas pressure sensor in the gas collector, a hydraulic mode stabilizer in the gas collector, and a valve installed in front of the bypass line, and an interconnected pressure sensor gas after the supercharger, the pressure regulator and the valve installed after the bypass line, -o t - is characterized by the fact that, in order to increase the reliability of the installation by stabilizing the mode of operation of the supercharger, it additionally contains an electrically driven current meter connected in series, two torus, the output of which is connected to the actuator valve installed on the bypass line.