Process and device for pyrolysis of chlorine-containing plastics to oil based on multiphase gas-solid fluidization reaction

A technology of fluidization reaction and plastics, which is applied in the preparation of liquid hydrocarbon mixtures, the petroleum industry, and the treatment of hydrocarbon oils. Complicated problems, to achieve the effect of reducing the complexity of equipment, strengthening the efficiency of chlorine fixation, and increasing the reaction time

Active Publication Date: 2022-04-26
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

However, the above-mentioned wet dechlorination process is relatively complicated, with high operating costs and low efficiency, and cannot better meet the requirements of pyrolysis of chlorine-containing plastics to oil

Method used

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  • Process and device for pyrolysis of chlorine-containing plastics to oil based on multiphase gas-solid fluidization reaction

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. In this embodiment, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "upper end" and "lower end" are based on the orientation or positional relationship shown in the drawings, It is for the convenience of description only, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, or operate, and thus should not be construed as limiting the present invention.

[0032] A process for producing oil by pyrolysis of chlorine-containing plastics based on multiphase gas-solid fluidization reaction, comprising the following ...

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Abstract

The invention discloses a process and device for producing oil by pyrolysis of chlorine-containing plastics based on multiphase gas-solid fluidization reaction. The device includes a first screw feeder, a dehydrochlorination reactor, a first cyclone separator, a second cyclone separator, a third cyclone separator, a catalytic cracking fluidized bed, and a catalytic coke gasification-combustion regeneration fluidized bed , Distillation tower, fuel oil tank, cracker tank, chlorine fixation fluidized bed and cross-flow moving bed. The invention separates the catalytic cracking reaction from the chlorine fixation reaction, which is convenient for accurately controlling the chlorine fixation reaction and improving the chlorine fixation efficiency; the dehydrochlorination process of chlorine-containing plastics is separated separately, and the dehydrochlorination reaction time is increased by using trays; the standpipe is used as a mobile The bed reaction device fixes chlorine, strengthens the efficiency of chlorine fixation, and reduces the complexity of the equipment; uses the carbon deposition gasification-combustion reaction of the catalyst to realize the regeneration of the carbon deposition catalyst, and at the same time avoids the change of the pore crystal structure of the catalyst caused by direct incineration, prolonging the life of the catalyst. Catalyst service life.

Description

technical field [0001] The invention relates to the technical field of chlorine-containing plastics treatment, in particular to a process and device for pyrolyzing chlorine-containing plastics to oil based on multiphase gas-solid fluidization reaction. Background technique [0002] Humans have produced a large amount of chlorine-containing waste plastics in production and life. Due to their high chlorine content, it has brought great difficulties to recycling. Catalytic cracking of chlorine-containing plastics under high-temperature anaerobic conditions to produce fuel oil is the best treatment method. [0003] At present, my country mainly uses step-by-step pyrolysis method to pyrolyze chlorine-containing plastics to produce fuel oil in tank reactors and tubular reactors, that is, firstly, low-temperature pyrolysis of chlorine-containing plastics at a temperature of 300°C produces a large amount of hydrogen chloride gas and a small amount of hydrocarbon gas, and then use ly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/00C10G1/08C10G1/02C10G1/10
CPCC10G1/002C10G1/006C10G1/08C10G1/02C10G1/10C10G2300/1003C10G2300/70
Inventor 杨宇邓渝川林顺洪季炫宇
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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