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Chlorine-containing plastic pyrolysis oil production system based on premelting treatment

An oil system and plastic technology, which is applied in the field of chlorine-containing plastic pyrolysis oil-making system based on pre-melting treatment, can solve the problems of unrecyclable catalyst, low dechlorination efficiency, coking in the reactor, etc. Promotes mixing and enhances the effect of interactions

Active Publication Date: 2021-06-25
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to provide a system based on pre-melting treatment of chlorine-containing plastics pyrolysis to oil, aiming at solving the problem of using mechanical mixing method in the traditional trough-type and tubular waste plastics pyrolysis reactors in the prior art. Mixed with chlorine fixing agent and catalyst, there are technical problems such as low dechlorination efficiency, catalyst cannot be recycled and reactor coking is serious

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  • Chlorine-containing plastic pyrolysis oil production system based on premelting treatment
  • Chlorine-containing plastic pyrolysis oil production system based on premelting treatment
  • Chlorine-containing plastic pyrolysis oil production system based on premelting treatment

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[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0021] In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element...

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Abstract

The invention discloses a chlorine-containing plastic pyrolysis oil production system based on premelting treatment, PVC is subjected to premelting treatment through a first screw feeder, the premelting temperature is about 150-200 DEG C and is lower than the PVC dehydrochlorination temperature, the PVC is compounded and molded with CaO particles after being melted, the solid-solid contact mode between the two material particles is changed, and a compact structure with PVC melt wrapping CaO particles and melt flow entering the interior of the particles is formed. Meanwhile, fine particles CaO are adhered to the surface of a plastic melt so that the PVC is wrapped by the inner and outer layers of CaO, more homogeneous mixing of materials is promoted, interaction in the chlorine fixation process is enhanced, and compared with a traditional mechanical mixing mode, the chlorine fixation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of pyrolysis of chlorine-containing plastics, in particular to a system for producing oil by pyrolysis of chlorine-containing plastics based on pre-melting treatment. Background technique [0002] With the improvement of living standards, the amount of waste plastics is increasing, and its rational disposal has become a worldwide problem. Conventional disposal methods such as landfill, incineration and melting regeneration all have certain technical problems. At present, the catalytic cracking of waste plastics to oil is considered to be one of the best technical routes for disposal of waste plastics. [0003] At present, my country mainly uses tank reactors and tubular reactors for pyrolysis of waste plastics to produce fuel oil. However, chlorine-containing plastics will release a large amount of hydrogen chloride during pyrolysis, causing serious corrosion to equipment. The conventional disposal method...

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Application Information

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IPC IPC(8): C10G1/10C10B53/07
CPCC10G1/10C10B53/07Y02P20/143
Inventor 杨宇宋林峰焦明鑫邓彦雯朱哲麟王计委李汝春
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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