Precautions for Raw Material Pretreatment of Waste Tire Pyrolysis

1. Flammable & explosive materials are strictly prohibitedDo not mix in oxygen cylinders, paint buckets, sealed cans, lighters, batteries, etc., to avoid explosion during heating.

   
   

2. Strictly control moisture contentRaw materials shall not contain rainwater or sludge. Excessively high moisture will:

• Reduce oil yield

• Cause unstable furnace pressure

• Generate large amounts of wastewater and fail environmental standardsAir drying or heating drying is recommended before feeding.

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1. Steel wires must be completely removed

• Residual steel wires may scratch the reactor and jam the slag discharger

• Reduce carbon black purity and selling priceMagnetic separation or manual picking is necessary after crushing.

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2. Whole tires are not allowed to be fed directlyWhole tires lead to uneven heating, slow pyrolysis, serious coking and poor oil output.They must be crushed to proper size (usually 3–8 cm).

   
   

3. Avoid excessive fiber and impuritiesA large amount of sand, fiber and fabric will:

• Reduce oil yield

• Accelerate equipment wear

• Block pipelines and condensersScreening is required after crushing to remove impurities.

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4. Do not mix different types of tires randomly

• Car tires contain more nylon with lower oil yield

• Truck and OTR tires have higher rubber contentClassified use helps stabilize oil yield.

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5. Prevent metal foreign matters from entering equipmentIron blocks, steel bars and hard debris may damage crushers and screw feeders.Manual inspection is required before feeding.

   
   

6. Ensure uniform rubber block sizeUneven sizes result in incomplete pyrolysis, low oil yield and high oil content in carbon black.

   
   

7. Avoid long-term open-air storageLong-term sun and rain accelerate rubber aging and reduce oil yield.Covered storage is recommended.

   
   

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