Online analysis method of hardness distribution of coke layers in coke tower during hydraulic decoking

Abstract

The invention provides an online analysis method of hardness distribution of coke layers in a coke tower during hydraulic decoking. The method includes: collecting height signal of a hydraulic decoking drill rod during decoking and acoustical signal of high-pressure water ejected on coke, denoising and storing; establishing a real-time database of sampling time, height of the hydraulic decoking drill rod and sound of the high-pressure water ejected on the coke; utilizing a preset relation between the sound of the high-pressure water ejected on the coke and hardness to correlate the real-time database, and acquiring hardness distribution rules of the coke layers at different heights; according to hardness metering standards and the hardness distribution rules of the coke layers different in height, online displaying hardness of the coke layers different in height in real time. The real-time database is established to analyze hardness distribution of the coke layers different in height, and hardness of the coke layers can be displayed online, so that operation workers can be assisted and guided in decoking, energy consumption can be lowered, decoking time can be reduced, decoking accidents like drill rod holding and drill rod jamming can be avoided, and potential safety hazards can be reduced.

Description

technical field [0001] The invention relates to the field of on-line analysis of the hardness distribution of the coke layer in the coke tower during the hydraulic decoking process in the petrochemical industry, in particular to an online analysis method for the hardness distribution of the coke layer in the coke tower during the hydraulic decoking process. Background technique [0002] At present, in the hydraulic decoking process of petrochemical coke towers, the decoking process is relatively fixed. However, due to the difference in coking raw materials and green coke process, the quality of each green coke will be different, resulting in different hardness distributions of coke layers at different heights in the coke drum. Under a relatively fixed decoking process, because the enterprise process planner cannot predict the hardness distribution of the coke layer, the operator usually uses repeated coke cutting to ensure normal production. This results in huge water and e...

AI Technical Summary

Problems solved by technology

This results in huge water and electricity losses and relatively low decoking efficiency

Moreover, because the operators do not understand the hardness distribution of the coke layer at different heights in the coke tower, the coke cutting operation is performed only based on experience, which will greatly increase the occurrence of coking, sticking and other decoking caused by coke collapse during the hydraulic decoking process. The risk of accidents, if not found and dealt with in time will cause major production and safety accidents

Images