Composition of Control System for Mechanical Lime Kiln
The automation control system of mechanical lime shaft kiln is the core part to ensure stable production, optimize energy consumption, and improve product quality. Modern control systems typically adopt a PLC+DCS+intelligent instrument architecture, consisting mainly of the following modules:
1. Data collection and monitoring system
Sensor network: including kiln temperature sensors (infrared/thermocouple), pressure transmitters, gas composition analyzers (O ₂, CO, CO ₂), etc., to monitor the working conditions inside the kiln in real time.
Video surveillance: Install industrial cameras at key locations such as kiln roof and discharge outlet to assist manual inspection.
2. Core control unit
PLC control system: responsible for executing logical control, such as fan speed regulation, discharge valve opening and closing, fuel injection quantity control, etc.
DCS distributed control system: Integrate data from the entire kiln to achieve closed-loop optimization of parameters such as calcination temperature curve and air coal ratio.
3. Executing Agency
Variable frequency speed regulation device: controls the air volume of the blower and induced draft fan to match the calcination requirements.
Electric control valve: Accurately adjust the supply of gas/coal powder to ensure combustion efficiency.
Hydraulic push rod system: controls the material feeder to evenly discharge materials, avoiding uneven burning inside the kiln.
4. Human computer interaction and remote management
HMI touch screen: provides a visual interface for kiln conditions, supports parameter modification and alarm query.
Cloud platform access: Supports remote monitoring and fault diagnosis on mobile devices through 4G/5G data transmission.
5. Security protection system
Interlock protection: Automatic shutdown in case of overheating, material breakage, or abnormal pressure.
Emergency power supply: Ensure the safe shutdown of critical equipment in case of sudden power outages.
Through multi system collaboration, the control system of the mechanical lime shaft kiln can achieve "one click start stop, automatic optimization", significantly improving production efficiency and environmental indicators.
