PYROLYSIS PROCESS

• Pyrolysis can be used to reprocess the tyres into fuel gas, fuel oil, solid residue (steel wire) and carbon black.
• A pyrolysis method which produces activated carbon and high-grade carbon black.
• The waste tyres are mainly composed of long chain of C-H molecules.
• The major source is from process of pyrolysis, separation and compounding of Oil.
• The technology of pyrolysis, cracking, monomerisation of used tyres is always a hot topic.

Tyre Pyrolysis

• The pyrolysis method for recycling used tyres is a technique which heats whole or shredded tyres in a reactor vessel containing an oxygen free atmosphere and a heat source.
• In the reactor the rubber is softened after which the rubber polymers continuously breakdown into smaller molecules.
• These smaller molecules eventually vaporize and exit from the reactor.
• These vapors can be burned directly to produce power or condensed into an oily type liquid, generally used as a fuel.
• Some molecules are too small to condense. They remain as a gas which can be burned as fuel.
• The minerals that were part of the tyre, about 40 to 45 % by weight, are removed as a solid.
• When performed well a tyre pyrolysis process is a very clean operation and has nearly no emissions or waste.
• The properties of the gas, liquid and solid output are determined by the type of feed stock used and the process conditions.
• For instance whole tyres contain fibers and steel. Shredded tyres have most of the steel and sometimes most of the fiber removed.
• Batch wise Process is done by tyre pyrolysis.
• The steel can be removed from the solid stream with magnets for recycling. The remaining solid material, often referred to as "charcoal".

Variety of polymer waste material is suitable as a raw material.

Given below is the list of suitable raw materials for pyrolysis:

• Waste tyres
• Rubber or rubber parts from vehicles
• Electronic scrap
• Mixed waste from waste paper mill
• Mixed (HDPE, LDPE, PE, PP, Nylon, Teflon, PS,ABS,FRP etc)
• Multi layered
• The choice of feedstock and process can impact the value of the finished products

Input-Output Ratio of Waste Tyre

• Yield(End product) of pyrolysis process:
• Pyrolysis oil (Fuel oil) FI - RF-5
• The essential product of tyre pyrolysis process is pyrolysis oil referred as fuel oilNylon / Radial Tyre (40 to 45 % of total quantity feed) which is used as a fuel component for heating oil´s and as a component in vessel fuels.
• Purest quality of pyrolysis oil comparable to industrial diesel: selling price comparable to industrial diesel LDO(light diesel oil)
• Carbon Black
• The vital product of pyrolysis plant is carbon black referred as "charcoal"(30 to 35% of total quantity feed).carbon black has Industrial and commercial use.
• Steel wire
• For instance whole tyres contain fibers and steel. Shredded tyres have most of the steel and sometimes most of the fiber removed.
• The steel wire(15 to 20%) can be removed from the carbon black with magnets for recycling after pyrolysis process & sold to the steel dealer
• Gas