Technical Features

1. PLC Controller

   • Adopts Siemens S7 - 200 SMART control system from Germany, featuring high reliability, strong anti - interference ability, and stable operation.

2. Gas Flow Monitoring

   • Utilizes high - precision mass flow meters to directly control and monitor the flow rates of N? and CO? during the test. It is stable, intuitive, and drift - free.

3. Tail Gas Combustion

   • The carbon monoxide gas generated during the reaction is heated in the furnace chamber and then combusted at the top of the furnace body, resulting in zero CO emissions. It is safe and environmentally friendly.

4. Single - Corundum - Tube Three - Element Thermocouple Furnace Temperature Monitoring

   • The test furnace uses a single three - element thermocouple to measure the temperature, enabling real - time monitoring of the heating element and the center temperature of the sample.

5. Significantly Extended Service Life of Spare Parts

   • Split - type embedded furnace chamber: Each of the three sections can be independently controlled and replaced. The overall service life can reach about 1 year, which is 3 - 4 times longer than that of traditional electric heating wire equipment, thus greatly reducing the usage cost.

Main Technical Parameters

1. Gas Flow Control

   • CO? and N? are automatically switched, with full - automatic gas control. The flow rate, gas switching, and CO? heating are all fully automatic.
   • Gas flow calibration: Default standard calibration.
   • Maximum flow rate: 10L/min for CO? and 10L/min for N?.
   • Response time: Gas characteristic: 1 - 2s; Electrical characteristic: 1s.
   • Pressure resistance: 1MPa.
   • Gas transmission pipe: Imported A10*8 high - strength plastic pipe.

2. High - Temperature Heating Furnace

   • Furnace body material: High - strength aluminum alloy.
   • External dimensions of the furnace body: Φ600mm×850mm.
   • Lining material: Zirconium - containing ceramic fiber.
   • Lining dimensions: Φ360mm×Φ160mm×760mm.
   • Maximum heating temperature of the heating element: 1200℃.
   • Thermocouple: Rhodium - platinum thermocouple (Type S).
   • Reactor material: GH44 high - temperature - resistant alloy steel.
   • Reactor specification: Meets the requirements of Article in GB/T4000 - 2017 Test Method for Coke Reactivity and Coke Strength after Reaction.
   • Power supply for the heating furnace: AC380V ±10%.
   • Total power: ≤12KW.
   • Constant - temperature zone range: When the furnace temperature is maintained at 1100±5℃, the axial constant - temperature zone in the furnace is ≥200mm.
   • Lifting device stroke: 700mm.
   • Load - bearing capacity of the lifting device: Not less than 20kg.
   • Total weight of the furnace body: ≤180kg.

3. Sieves

   • Round - hole sieves: Φ10, 23mm, and 25mm.

4. Type I Drum

   • Rotation speed: 20r/min±1r/min.
   • Drum controller: Total rotation number 600r, time 30min±1min.
   • Drum body: Made of seamless steel pipe with an outer diameter of 140mm and a thickness of 5mm - 6mm. The inner net length of the drum is 700mm, and the thickness of the drum cover is 5mm - 6mm.
   • Real - time digital display.
   • Rotation speed adjustable from 0 to 25R/Min.

5. Computer Control

   • Fully automatic.
   • Supports user - defined programming, especially suitable for research - oriented tests of this project.
   • Self - diagnosis function. It can automatically detect common system faults, issue alarms, and display corresponding error prompt symbols.