Multi-tube pyrolysis system for waste plastic

A multi-tube pyrolysis system for waste plastic comprising:

• a preparation system including a collection module, a selection module, a crushing module, and a plastic extrusion module;
• wherein the collection module guides waste plastic to the selection module after collecting the waste plastic, the selection module picks up non-plastic substances from the waste plastic, and the waste plastic is crushed by the crushing module, an output tube of the plastic extrusion module heats and melts the waste plastic, then the plastic extrusion module delivers the waste plastic which is melt to a decomposition system;
• wherein the decomposition system includes a reaction furnace, a primary combustion chamber assembly, a secondary combustion chamber assembly, a cooling module, an oil storage tank, and a carbon storage tank, wherein the reaction furnace includes multiple first delivery tubes defined therein and configured to heat the waste plastic which is melt, when the waste plastic which is melt is located inside the multiple first delivery tubes, the multiple first delivery tubes have no oxygen so as to heat and decompose the waste plastic which is melt, thus producing decomposed carbon and oil-gas mixed liquid in the reaction furnace;
• the decomposed carbon is delivered to the carbon storage tank by a second delivery tube;
• and the carbon storage tank has a water filtering module for separating the decomposed carbon from air;
• the oil-gas mixed liquid flows through the cooling module to produce decomposed oil and syngas, wherein the decomposed oil is delivered to the oil storage tank, and the syngas enters into the primary combustion chamber assembly to be burned so as to provide heat to the reaction furnace, and the reaction furnace produces smoked gases which are delivered into the secondary combustion chamber assembly;
• and
• a filtration system including a heat exchanger, a cooling device, and a cyclone separation module, wherein a heat source is guided into the heat exchanger from the reaction furnace, and the heat exchanger heats the secondary combustion chamber assembly;
• the cooling device is connected with the secondary combustion chamber assembly, and the smoked gases are guided into the cooling device to reduce a temperature of the smoked gases to 200° C., and the smoked gases are sprayed by alkali adding equipment so as to eliminate sulfur oxide (SOx), and are fed into the cyclone separation module after the sulfur oxide (SOx) is eliminated, wherein the cyclone separation module produces wind in a filtration space so as to conduct the smoked gases to a filter, and the filter filters particles of the smoked gases, then a chimney discharges the particles.