Refining Apparatus and Refining Method for Recycling Waste Plastics

摘要

A refining apparatus and a refining method for recycling waste plastics. The refining apparatus includes a feeding device, a pyrolysis furnace, a chloride-decomposing device, a first condensation device, a temporary storage, a still, a sieve plate tower, a second condensation device, and a receiving tank. The waste plastics are cracked by the pyrolysis furnace to produce plastic gas by heating. The chlorides of the plastic gas are removed by the chloride-decomposing device having the ammonia to produce a first oil gas. The first oil gas is condensed by the first condensation device to produce raw oil. The raw oil is heated by the still to produce a second oil gas. The second oil gas is sieved by the sieve plate tower to produce a third oil gas. The third oil gas is condensed by the second condensation device to produce finished oil received by the receiving tank.

主权项

1. A refining method for recycling waste plastics, at least comprising following steps:
providing waste plastics in a feeding device; carrying the waste plastics to a rotary kiln of a pyrolysis furnace, wherein the rotary kiln rotates the waste plastics; providing heat to the waste plastics in the rotary kiln by burning a fuel via a burner, so that the waste plastics being cracked to produce a plastic gas, wherein the burner is assembled under the rotary kiln; introducing the plastic gas into a chloride-decomposing device having ammonia to remove chlorine of the plastic gas and produce a first oil gas and a mixed gas by reacting the waste plastics with the ammonia; condensing the first oil gas to produce a raw oil by a first condensation device; receiving the raw oil by a temporary storage; receiving the raw oil from the temporary storage by a still, wherein the still warms up the raw oil to produce a second oil gas; introducing the second oil gas into a sieve plate tower, wherein the sieve plate tower has a plurality of sieve plates arranged in a vertical direction orderly to sieve the second oil gas, respectively, wherein a heavier oil gas of the second oil gas is transformed into an oil via the sieve plates and sent back to the still, and a lighter oil gas of the second oil gas floats through the sieve plates to produce a third oil gas; condensing the third oil gas to produce a finished oil by a second condensation device; and receiving the finished oil by a receiving tank.