The pyrolysis of oil sludge is a thermal process that separates oil, residue, and water from oil sludge.
This process aims to recycle resources without causing secondary pollution.
It is particularly relevant in the context of environmental protection due to the increasing amounts of oil sludge produced by oil extraction and processing activities.
What is the Pyrolysis of Oil Sludge? (4 Key Steps Explained)
1. Feeding and Heating
The oil sludge is first pre-treated.
Then, it is loaded into an oil sludge pyrolysis plant using an automatic feeding system.
The reactor is heated until it reaches a specific temperature, typically between 150 and 900°C.
This triggers the pyrolysis process.
2. Pyrolysis Reaction
During pyrolysis, volatile substances are released from the oil sludge.
These gases can serve as fuel to maintain the pyrolysis process.
This reduces the need for external energy sources.
The released oil and gas pass through a buffer chamber to release pressure.
Then, they enter condensers.
3. Product Separation
In the condensers, most of the oil gas is cooled and converted into fuel oil.
The uncondensable gases are recycled back into the reactor for heating.
This helps in fuel conservation.
4. Slag Discharge and Environmental Control
After the pyrolysis, the remaining slag, primarily composed of soil, is discharged using an auto screw discharger.
The soil can be used directly for making bricks or paving.
Additionally, a pollution control system, including desulfurization and dust removal systems, ensures that the smoke generated during the combustion process meets emission standards.
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