Coal Conveyor Belt Technical Transformation Project of a Petrochemical Group

I. Project Overview

A certain petrochemical group is a large petrochemical enterprise, and the coal conveying system in the plant area is responsible for the continuous transport of boiler fuel. The original coal conveyor belt lacked an online detection device for metal foreign objects Foreign objects mixed in the coal, such as bolts, welding slag, and broken metal components, easily enter the coal crusher, causing damage to the crusher hammers and belt tearing. This frequently to unplanned shutdowns, high equipment maintenance costs, and difficulty in ensuring production continuity.

To implement the requirements of safety production technical transformation, the enterprise launched an intelligent upgrade project for the conveyor belt. After multi-party technical comparisons and field inspections, Weifang Zhitian Industrial Automation Equipment Co., Ltd. was selected as the equipment supplier. 11 of GJT series belt conveyor metal detectors were purchased and deployed along 11 coal conveyor belts in the plant area.

II. Project Difficulties and Solutions

Project Pain Points

 electromagnetic environment in the petrochemical plant area is complex, with a high density of frequency converters, motors, and large electrical equipment, making ordinary detection equipment prone to false alarms;

 coal conveyor belt operates continuously at high speeds, with significant on-site dust and a noticeable day-night temperature difference, imposing strict requirements on the equipment's protection level and long-term stability

The spatial layout of multiple belts on-site varies, requiring the equipment to adapt to different bandwidths and support linkage with the plant's existing DCS control system to achieve audible and alarms and interlocked shutdowns;

The technical transformation project has a tight schedule, requiring one-stop services including supply, on-site installation guidance, and commissioning to minimize the duration of production shutdowns.

Zhitian Industrial Control Implementation Plan

Customized Hardware Configuration

Supplying 11 sets of industrial-grade belt metal detectors, which adopt digital phase- detection technology, possess excellent anti-electromagnetic interference capabilities, and can stably identify iron, stainless steel, and non-ferrous metal impurities; the machine body is hermetically protected to adapt to dust and temperature difference working conditions, and the sensitivity can be precisely adjusted on-site as needed.

System Compatibility and Integration

Reserved relay switch signal outputs seamlessly connect with the enterprises existing coal conveying centralized control system; upon detecting metal foreign objects, it immediately triggers audible and visual alarms and can link to the belt shutdown to intercept dangerous metal impurities at the earliest.

Full-Process Delivery Service

Strictly complete the production, inspection, and timely delivery of complete equipment sets according to project milestones; arrange technical engineers to go to the Dalian project to cooperate with the construction unit to complete positioning installation, wiring and commissioning, sensitivity calibration, and operator training, ensuring the smooth and timely commissioning of the technical transformation project。