Thermal decomposition separation technology is a commonly used technology for harmless treatment of oil sludge, rubber powder, and acrylic both domestically and internationally. Under anaerobic conditions, the material is heated to a temperature between the boiling point of water and the pyrolysis temperature of hydrocarbon substances. At this time, hydrocarbons and macromolecular organic matter will desorb, and light hydrocarbons and water will be recovered through evaporation and condensation. Heavy hydrocarbons and inorganic matter will be separated in the form of mud for solid-liquid re separation, and then heavy hydrocarbons will be recovered.
Applicable raw materials: Rubber powder and oil sludge
Processing capacity: Approximately 20-30 tons per unit per day
Final products: Carbon black, fuel oil, combustible gas
historical background
At present, the existing oil sludge (rubber powder, acrylic) in China also uses pyrolysis separation technology, but most of them still use intermittent heating With the development of society, the enhancement of human awareness of environmental protection and energy conservation, and the advancement of technology, pyrolysis separation equipment is constantly being improved According to the national industrial policy "Access Conditions for Comprehensive Utilization of Waste Tires Industry", traditional horizontal rotary furnaces have been upgraded and replaced Unable to meet the environmental protection and large-scale production efficiency of enterprises. The semi continuous pyrolysis separation equipment not only meets the requirements of industrial policies, but also greatly improves production efficiency and energy conservation and consumption reduction.
Semi continuous pyrolysis process
Process Description
The source material is continuously fed into pyrolysis reactor, where it is decomposed under heating in a primarily non-reactive environment.
1. Solid wastes (plastic/tyre/rubber) are fed by a screw conveyor from the hopper.
2. The pyrolysis reactor is heated by the fuel burner. When the heat temperature rises to the set value, the decomposition process starts.
3. After the operation process is stable, heating is carried out by gas burner operating on pyrolysis gas.
4. From the pyrolysis reactor, the oil gas goes into condensers. Then it is cooled in the heat exchanger.
5. Oil gas enters the condenser, cools down to liquid while the non-condensed gas is used as fuel to sustain the heating process, enhancing its performance and significantly reducing operating costs.
6. The solid residue is discharged from the lower part of the reactor and shifted to receiving hoppers by the screw conveyor without oxygen access.
Technical specification
Project | Content |
Capacity | 30T |
Voltage | 380V/50hz |
Total installed power | 80KW |
Applicable raw materials | Oil mud, adhesive powder, acrylic, etc |
Final product | Fuel oil, carbon black |
Structural style | Horizontal rotation |
Material of pyrolysis furnace | Q245R or Q345R professional boiler plate |
Reactor thickness | 16mm or 18mm(according to your requirement) |
Daily processing volume | 30T/day |
Available fuel | Natural gas/heavy fuel oil |
Equipment footprint | 450 ㎡~600 ㎡ (width 10m * length 45m) |
Cooling method | Circulating water |
Work format | Semi continuous |
Production cycle | 45 working days |
Characteristics of semi continuous pyrolysis equipment
This process adopts the atmospheric pressure pyrolysis method for treatment, which changes the traditional production process, mechanization of room temperature and atmospheric pressure feeding, and dust prevention and automatic slag discharge. Normal pressure design, normal production pressure of 0.01MPa -0.02MPa, maximum set pressure of 0.03MPa, and final pyrolysis temperature of 400 ℃. The design is equipped with an overpressure safety device, which adjusts the amount of furnace input and combustion conditions based on the pressure and temperature of the pyrolysis furnace. When the set pressure is exceeded by 0.03MPa, the pressure will be automatically released and an alarm will be issued.
The pyrolysis reactor adopts a horizontal rotating bottom uniformly heating method, and is equipped with a material flipping device inside the pyrolysis reactor. The materials are rotated into the pyrolysis reactor through the material preparation bin for pyrolysis. As the temperature changes (at room temperature of 400 ℃), the materials complete pyrolysis in the reactor. After pyrolysis, the residue enters the slag bin for cooling. At the same time, the pyrolysis reactor begins the next furnace of pyrolysis. The pyrolysis gas is separated from the heavy oil and light oil and gas through the gas bag, and the oil and gas are cooled and collected by the column condenser and box coil condenser.
Non condensable gas is purified and enters the furnace through pipelines to aid combustion, saving fuel. After multi-stage purification, the flue gas meets the emission standards.
Recycled products
1.Fuel oil
It can directly replace fuel oil for industrial or boiler heating, such as cement plants, steel plants, glass plants, etc.;
It can be refined into diesel for diesel combustion and power plants, agricultural machinery, etc.
2. Carbon black
It can be used for industrial heating by briquetting combustion, and its combustion value is equivalent to that of coal, and can be used directly instead of coal;
Toner can be refined into different standards and used as additives for paint pigments, rubber products, etc.
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