SU783334A1 - Device for automatic control of portion of distilled oil product - Google Patents

Description

(54) DEVICE FOR AUTOMATIC REGULATION OF OTGOYA SHARE) fEnpOflyKTK

t

The invention relates to devices for the automatic regulation of the distillation of petroleum product at the outlet of the tubular furnace and can be used on plants for distillation of 5 oil or secondary niiperoHKH shirrkoy fraction in the oil refining industry.

A device for automatic regulation of temperature is known. JO of the petroleum product at the outlet of the tubular furnace, containing temperature sensors at the outgoing and transheped, flow sensors of the initial and heated - g; raw materials, functional blocks, adders, regulators and actuators l g

 ; one

the closest to the trickle essence is the device for automatic control of the distillate fraction. oil product at the outlet of the tubular furnace, containing a temperature sensor for the oil product at the furnace exit, a temperature sensor of flue gases on the furnace pass associated with,

: a regulator acting on the actuator mounted on the fuel supply line to the injectors

I-zul .-. kf 30

A disadvantage of the known device is that it does not provide a predetermined fraction of low boiling hydrocarbons for distillation (the latter is a function of the pressure temperature and the quality of the initial mixture), which reduces the technical and economic performance of the process;

In order to improve the technical and economic indices of the process, the device is equipped with oil product pressure sensors. At the exit from the furnace, the sensor; the residue in the column; you have a dummator, setters, and an additional controller, with this pressure sensor is connected to the first input of the calculator, the second input of which is connected to the sensor of the oil product temperature, and the output from one of the inputs of the additional regulator connected by another input to the output of the first adder, the inputs of which are connected to the quality sensor of the remainder in the column and the first set point, the output of the additional regulator is connected to one of the inputs of the second adder, the other input of which is connected to the second unit, and the output is to p hum D1 1movyh torus temperature gases.

  The schematic of the device for automatic control of the oil product distillate fraction from the tube furnace is shown on the drawing sheet .- The device is a dust meter 1 sensor and a pressure 2 oil product on furnace 3, connected to computer 4, temperature sensor 5 dyMovy gases on the furnace pass, quality sensor 6 the remainder of the column 7 connected to the adder 8, the second input of which is connected to the setting device 9, and the output to the regulator 10, which is also connected to the calculator by its second input. The output signal of the regulator 10 is fed to the input of the second adder 11 connected by another input to the second setter 12, and the output to the regulator 13 connected to the second input to the sensor, the tag of the set 5 dSHGbv ghazb, and the output to the Executive mechanism 14 installed on the fuel supply line in the furnace,.

The device works as follows.

When changing the quality of the remainder of the column 7, the output signal of the quality sensor b changes, resulting in a change in the output signal of the first adder 8, where a new task of the distillation ratio for the regulator 10 will be formed by algebraically summing the output signal of the first unit 9 and the quality sensor b. The controller 10 compares the current value of the distillate fraction of the oil product coming in as an output signal of the calculator 4 with a predetermined value, which results in a modified output (5-day signal input to the second cy of the matrix 11. The second input of the adder 11 is connected to the second unit 12, setting the flue gas temperature setpoint on the furnace pass. As a result of the algebraic sum in the second adder 11, the flue gas temperature setting on the pass is adjusted. It comes to the input of the second regulator 13, where it is equal to the current temperature of the flue gas on the pass.When there is a mismatch, the output signal of the regulator 13 changes, which leads to a change in the position of the mechanism 14 and the fuel consumption in the furnace is increased or decreased.

Claims (2)

1. USSR author's certificate No. 467090, cl. From 10 G 9/20, 1 & 04.74. 2. Khasmamedov F, I, Thematic Reviews Managing the process of go: reni in tube furnaces, TsNIITEneftkhim, M ,, 1972 ,.  33 34