Computer Controlled Fired Bricks Tunnel Kiln Energy Saving 31 Hours Firing Cycle

Loại： Tunnel Kilns
Firing temperature: 950-1050℃
Firing qualification: ＞98%
Firing cycle: 31 hours
Control method: PLC/PID automatic intelligent instrument control system, IPC Management
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Computer Controlled Fired Bricks Tunnel Kiln Energy Saving 31 Hours Firing Cycle

1. Brief introduction

Computer controlled fired bricks tunnel kiln is the most popular thermal kiln for the features of continuous working, stable thermal parameters, big output and stable quality. Specially designed for dried hollow blocks, this tunnel kiln has wider cross-section, shorter firing cycle, and bigger output capacities.

The burning process is monitored and controlled by computer system.

2. Main technical parameters

No.	Function & Item	Unit	Parameter & Index	Remarks
1	Type of kiln		Flat roof type tunnel kiln
2	Product type		Clay block	Hollow type
3	Daily capacity (single line)	pcs	≥70,000	400x200x200mm
4	Length of kiln	m	162.8
5	Width inside of kiln	mm	8600
6	Size of kiln cart	mm	3600x8600 (LxW)
7	Capacity of kiln cart	set	45 (inside of kiln)	Total 68
8	Loading capacity of each kiln cart	pcs	2160	Approx22 tons
9	Valid height of loading	mm	2050	Designing 10 layers
10	Block moisture before entering kiln	%	3~5
11	Firing temperature	℃	950-1050	Designing 1150℃
12	Fuel type		Heavy oil	Thermal value: approx. 9500~10000 kcal/kg
13	Cycling of firing	H	24-40 adjustable	Designing 31.5H
14	Qualification rate of firing	%	≥98
15	Energy consumption per unit	kca/kg	≤350
16	Way of stacking & firing		2-time stacking & burning process, Automatically loading & unloading
17	Way of smoke evacuation		Mechanical smoke evacuation
18	Control method		PLC/PID automatic intelligent instrument control system, IPC Management

3. Computer control system

The design of the control system digested and absorbed the advanced tunnel kiln control system in Western Europe, combined with the requirements of brick and tile manufacturers, adopted several advanced control algorithms for kiln temperature control, its control accuracy, reliability and operability, etc. The technical indicators are at the leading level at home and abroad, and it is the system generally chosen by domestic and foreign sintered brick enterprises. It is based on the software (WinCC) and hardware (PCS7-300 module control system) of German Siemens Company, and has added the management system of VB/VC language and the database developed by SQL. This system not only has advanced monitoring screen functions, but also has powerful management and control functions. The PCS7-300 control system adopts a distributed network topology (supporting Ethernet network, Profibus-DP network, MPI network), and the module The bus connector supports online hot-swapping function, so the system has good maintainability, expansion and upgrade functions, and provides a good platform for future system upgrades. It is a part of the future factory automation management system.