Method of and apparatus of producing low boiling point hydrocarbon oil from waste plastics or waste rubbers
AssigneeMazda Motor Corporation
InventorsToshiki Takahashi, Yoshio Tanimoto
Life of this patent
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Abstract
Waste plastics are heated so as to be thermally decomposed and produce a vapor product containing oil and gas components. The vapor product is brought into contact with a solid acid catalyst containing a hydrochloric acid as a decomposing activator to be cracked so as to recover a low boiling point hydrocarbon oil.
Claims11
A method of producing a low boiling point hydrocarbon oil from waste plastic materials, comprising the steps of:
- heating waste plastic materials so as to thermally decompose them, thereby producing a vapor product;
- and
- bringing said vapor product into contact with a solid Lewis acid catalyst containing hydrochloric acid as a catalytic decomposing activator so as to crack said vapor product, thereby producing a low boiling point hydrocarbon oil.
A method of producing a low boiling point hydrocarbon oil from waste plastic materials, comprising the steps of:
- preparing a mixture of waste plastic materials, a solid Lewis acid catalyst and hydrochloric acid as a catalytic decomposing activator;
- heating said mixture to thermally decompose said waste plastic materials, thereby producing a vapor product;
- and
- bringing said vapor product into contact with a solid acid catalyst containing hydrochloric acid as a decomposing activator so as to crack said vapor product, thereby producing a low boiling point hydrocarbon oil.
An apparatus for producing a low boiling point hydrocarbon oil from waste plastic materials, said apparatus comprising:
- material supply means for supplying pulverized waste plastics to the apparatus;
- thermally decomposing means for heating said pulverized waste plastics to produce a vapor product containing an oil component and a gas component from said pulverized waste, said thermally decomposing means being divided into a thermally decomposing chamber, in which said pulverized waste plastics are thermally decomposed, and a catalytically decomposing chamber;
- a solid Lewis acid catalyst, including hydrochloric acid as a catalytic decomposing activator, provided in said catalytically decomposing chamber add contacting said vapor product so that it is cracked thereby;
- cooling means for cooling said vapor product to condense said oil component;
- gas-liquid separation means for separating the condensed oil component from said gas component;
- and
- heat means for burning said gas component separated by said gas-liquid separation means and providing heat gas to said thermally decomposing means.
An apparatus for producing a low boiling point hydrocarbon oil from waste plastic materials, said apparatus comprising:
- material supply means for supplying pulverized waste plastics to the apparatus;
- thermally decomposing means for heating said pulverized waste plastics to produce a vapor product containing an oil component and a gas component from said pulverized waste, said thermally decomposing means being divided into a thermally decomposing chamber, in which said pulverized waste plastics are thermally decomposed, and a catalytically decomposing chamber;
- a solid acid catalyst including hydrochloric acid as a catalytic decomposing activator, provided in said catalytically decomposing chamber and containing said vapor product so that it is cracked thereby;
- cooling means for cooling said vapor product to condense said oil component;
- gas-liquid separating means for separating the condensed oil component from said gas component;
- and
- heat means for burning said gas component separated by said gas-liquid separation means and providing heated gas separately to said thermally decomposing chamber and said catalytical decomposing chamber so as to heat said thermally decomposing chamber at approximately 450 degrees Centigrade and said catalytically decomposing chamber at a temperature between 120 and 250 degrees Centigrade.
Dependencies are inferred from the claim text.