TTJL-100 model 100kg electrically heated test coke oven (bottom charging)
I. Equipment Purpose
Experimental study of conventional and stamp charging coking to determine the more cost-effective coal blending ratio scheme.
II. Process Requirements
1. To accurately control the coal blending ratio and coal fineness and provide stable conditions for coking, adopt the process of crushing first then blending.
2. The 100kg test coke oven project includes: 100kg electrically heated test coke oven, conventional coal blending coking, stamp charging coal blending coking, coke quenching, and supporting coke detection equipment and auxiliary facilities.
3. Process experiments can conduct conventional coal blending and stamp charging coal blending coking experimental research, and also explore suitable coal blending conditions based on the cold strength index and hot strength index of the produced coke, infer the economy and possibility for production, guide production, and provide data for rational utilization of coal resources.
4. The furnace lining adopts silicon carbide lining, with good resistance to rapid cooling and heating, small expansion coefficient, no spalling or cracking in cold or hot conditions, and long service life. Specific indicators of furnace lining bricks: refractoriness ≥ 1770°C, initial temperature of load softening under 0.2Mpa ≥ 1620°C, bulk density 2.50-2.80 g/cm³, apparent porosity ≤ 21%, reheat linear change (1350°C*2h) ≤ +0.2%, cold crushing strength ≥ 85Mpa, thermal shock stability (1100°C water cooling) ≥ 50 times, bending strength (1100°C*2h) ≥ 20 Mpa, SiC ≥ 86%, Fe2O3 ≤ 1.2%.
5. The coking process is electric heating on both sides, bottom coal charging and coke discharging, with high automation and easy operation.
6. Computer controls the temperature of furnace walls on both sides. The error between the two sides during constant temperature is less than 5°C. Records the temperature of the coke cake center and the oven top space, with data storage and printing functions.
7. The computer operating system is Win10. The computer starts the control system and modifies system parameters, dynamically displaying system operation status and temperature curves.
8. Temperature control adopts artificial intelligence adaptive adjustment algorithm, with no overshoot or undershoot in heating and constant temperature control.
9. Users can arbitrarily set the heating curve. The program is compiled by temperature-time method, making programming convenient and flexible.
10. Has sensor (thermocouple) disconnection, reverse connection indication and over-temperature alarm functions.
III. Technical Parameters of Main Equipment
1. Test Coke Oven
1.1 Coal charging capacity: 62-88 kg (wet basis, coal charging density 0.72 t/m³ - 1.03 t/m³)
1.2 Effective dimensions of carbonization chamber (length × width × height): 660 × 420 × 650 mm
1.3 Coal charging box dimensions (length × width × height × thickness): 620 × 370 × 590 mm × 5 mm
1.4 Coal cake dimensions (length × width × height): 580 × 370 × (400-500) mm (adding 20 mm asbestos insulation on both sides of coal cake along the length direction of the charging box, and covering 20 mm asbestos insulation on top of coal cake along the height direction)
1.5 There are 6 silicon carbide rods for heating on each side of the combustion chamber
1.6 Coking time: 16h-24h (controlled at 22h during normal tests)
1.7 Flue temperature: 1050°C ± 10°C (rated temperature 1350°C)
1.8 Coke cake center temperature: ≥ 950°C
2. Central Control System
Adopts Siemens PLC control technology from Germany. Computer controls and regulates heating temperature. The computer realizes control of heating elements to complete the temperature control required by the test, with high temperature control accuracy, reliable and convenient use. Test data can be stored, displayed and printed.
2.1 Power supply: 380V, 50HZ
2.2 Rated power: 60KW
2.3 Temperature control program: Can be self-programmed for heating curve and holding time.
2.4 Accuracy: Level 0.5
3. Coal Charging and Coke Discharging System
The lifting system has a lifting height of 1.3m to protect the furnace body. Mechanical charging and discharging, safe and convenient operation.
4. Coke Quenching System
Adopts water quenching method, with optional dry quenching system.
5. 1/4 Coke Mechanical Strength Testing Drum (semi-automatic door, easy operation)
5.1 Inner diameter of drum: Φ1000mm ± 5mm, inner length of drum: 250mm ± 5mm, drum wall thickness: 8mm
5.2 Rotation speed: 25 ± 1 rpm, 100 revolutions time: 4min ± 10S
5.3 Motor: 1.5kw
5.4 Working voltage: 380V ± 10%
6. TTLX-1 Coke Shatter Strength Testing Device
6.1 Test box: 710mm × 455mm × 380mm, steel plate thickness: 3mm
6.2 Drop height: 1830mm
6.3 Drop platform: 1220mm × 965mm × 200mm, steel plate thickness: 12mm
6.4 Motor: 1.5 kW
6.5 Working voltage: 380V ± 10%
7. Coke Sieving Sieve (hand sieve)
7.1 Effective area of sieve plate: 1000mm × 700mm
7.2 Sieve plate punched from 2mm cold-rolled sheet, square holes, sieve openings: 80mm × 80mm, 60mm × 60mm, 40mm × 40mm, 25mm × 25mm
7.3 Wooden sieve frame with handle
8. Coke Drum Strength Sieve (hand sieve)
8.1 Effective area of sieve plate: 1000mm × 700mm
8.2 Sieve plate punched from 2mm cold-rolled sheet, round holes, 40mm × 40mm, 25mm × 25mm, 10mm × 10mm
8.3 Wooden sieve frame with handle
9. TTDG-01 Stamping Machine:
9.1 Purpose: Used to adjust the density of coal charged into the oven.
9.2 Technical Indicators:
Stamping density: 0.72 t/m³ - 1.03 t/m³
Stamping stroke height: 1100 mm
Stamping hammer stroke: 150 mm
Equipment dimensions: 5500 mm × 2300 mm × 5600 mm
Working voltage: 380V ± 10%
Equipment weight: 600kg
10. Selected Components and Materials for Main Equipment and Auxiliary Facilities
The electrical, control, and heating elements selected for the main equipment and auxiliary facilities are reliable in performance. The materials selected for the main equipment and auxiliary facilities are of reliable quality, well manufactured, and structurally reasonable.
