Device and method of adjustment and control of pressure of carbonization chamber in coking process of large-size coke oven

Abstract

The invention relates to a device and a method of adjustment and control of pressure of a carbonization chamber in a coking process of a large-size coke oven. The device includes a lifting tube cover control device, an ammonia water injection device, a carbonization chamber pressure detection device, a pressure regulating device, a mathematic modeling device and a control device. The mathematic modeling device is used for establishing a dynamic mathematic model of pressure control of the carbonization chamber by means of mechanism analysis with short-sight treatment according to coking time of the coke oven and pressure characters of the carbonization chamber, wherein the whole coking process is divided into several steps and a target preset value of pressure in each step is obtained. The carbonization chamber pressure detection device detects and collects the pressure data in the carbonization chamber. The control device compares an actual coking time with a target coking time and then regulates and controls the pressure of the carbonization chamber by outputting the pressure preset value in each step as a pressure regulating target value of one carbonization chamber to the pressure regulating device. The device is high in production automation degree, can greatly increase production efficiency and greatly reduce labor cost.

Description

technical field [0001] The invention belongs to the technical field of coke ovens, and in particular relates to an automatic control device and method for adjusting the pressure of a single carbonization chamber during coking of a large coke oven, which can conveniently realize the adjustment of the pressure of the carbonization chamber during the coking process of a large coke oven. Background technique [0002] At present, the new coke oven must integrate large-scale, environmental protection, mechanization and automation. The coke oven system has generally adopted automatic control technology, and the traditional coke oven’s extensive adjustment method for the suction pipe pressure is changed to by adjusting each carbonization. The fine adjustment method of controlling the pressure of the gas collecting pipe by using the rising pipe pressure of the chamber, and realizes the fully automatic operation of the coking process of each carbonization chamber, reduces the labor int...

AI Technical Summary

Problems solved by technology

[0004] 1) The pressure control of the carbonization chamber of the coke oven is adjusted by the main pipe of the gas collector, the pressure of each carbonization chamber is unbalanced, and has a great influence with coal loading and coke pushing;

[0005] 2) When the coke oven is charged with coal, because the carbonization chamber is charged with positive pressure, the phenomenon of smoke, fire and dust from the coal charging hole is serious;

[0006] 3) When pushing coke, the ascending pipe is directly connected with the gas collecting pipe and the atmosphere, so it is very easy to string air into the raw gas system, resulting in high oxygen content;

[0007] 4) When coking, the pressure of each carbonization chamber is unbalanced, which affects the quality of coke, and the recovery rate of raw gas is not very high;

[0008] 5) The degree of production automation is low, which greatly reduces production efficiency and greatly increases labor costs

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