发明名称 |
METHOD AND APPARATUS FOR CHEMICAL RECYCLING OF WASTE PLASTIC |
摘要 |
<p>PROBLEM TO BE SOLVED: To effectively recover an olefin gas, hydrogen, and BTX from a waste plastic. SOLUTION: This method comprises a pretreatment step (I) for separating a waste plastic into a polyolefin plastic and other plastics; a thermal decomposition step (II) for thermally decomposing the polyolefin plastic; a catalytic decomposition step (III) wherein 2-4C olefins are formed from a thermal decomposition gas 5 (generated at step II) by the action of a boron-containing silicate catalyst 7 of a first catalytic decomposition section 8 and BTX and hydrogen are formed by the action of a gallium-containing silicate catalyst 9 of a second catalytic decomposition section 10; a high-boiling-point component separation step (IV) for separating a high-boiling-point component from a gas 13 coming out of step III; and a gas-liquid separation step (V) wherein the gas 13 freed of the high-boiling-point component is cooled to be separated into a gas phase 16 mainly comprising a 2-4C olefin gas and hydrogen and a liquid phase 17 mainly comprising BTX.</p> |
申请公布号 |
JP2002121318(A) |
申请公布日期 |
2002.04.23 |
申请号 |
JP20000316923 |
申请日期 |
2000.10.17 |
申请人 |
ISHIKAWAJIMA HARIMA HEAVY IND CO LTD |
发明人 |
UEMICHI YOSHIO;SHOBU AKEMI;SUGIOKA MASATOSHI;ITOU MASAAKI;NISHINO JUNYA |
分类号 |
F25J3/02;B01D3/14;B01D5/00;B29B17/00;B29B17/04;C07B61/00;C07C2/42;C07C4/22;C07C11/02;C07C15/02;C08J11/12;C08J11/16;(IPC1-7):C08J11/12 |
主分类号 |
F25J3/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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