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A method of pyrolyzing high-protein algae and waste plastics to produce carbon by gas-solid two-phase mixed chlorine removal

A waste plastic, high protein technology, used in chemical instruments and methods, solid waste removal, biofuels and other directions, can solve problems such as pollution, complex garbage composition, hazards, etc., achieve high quality, alleviate energy crisis, and high calorific value. Effect

Active Publication Date: 2021-01-12
SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the composition of garbage is quite complex, and pollution problems will inevitably occur during the incineration process. In addition to conventional sulfur and nitrogen oxides, municipal solid waste contains a large amount of chlorine-containing plastics and inorganic salts, which will also cause chlorine pollution. The pollution of elements, especially the chlorine-containing pollutants produced after the incineration of polyvinyl chloride, its random discharge has caused great harm to human production and life.

Method used

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  • A method of pyrolyzing high-protein algae and waste plastics to produce carbon by gas-solid two-phase mixed chlorine removal

Examples

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Effect test

Embodiment 1

[0031] Such as figure 1 Shown, is a kind of high-protein algae biomass of the present invention and the method for pyrolysis dechlorination of waste plastics charcoal, comprises the following steps:

[0032] ⑴Crush and grind waste plastics (the main component is PVC (polyvinyl chloride)) and high-protein algae biomass (chlorella) to particles with a particle size of 0.5mm, and weigh 0.4kg according to the mass ratio of 2:3 Waste plastics and 0.6kg of high-protein algae biomass, after drying, were put into their respective pyrolysis devices, and both pyrolysis devices were in the form of fixed beds.

[0033] (2) Introduce carrier gas—nitrogen gas into the pyrolysis device where the waste plastic is located (waste plastic pyrolysis device), the flow rate of the carrier gas is set by the flow controller, and the set reaction flow rate is 100ml / min;

[0034] (3) Set the temperature of the two pyrolysis devices respectively through two temperature controllers. The temperature set ...

Embodiment 2

[0039] In this embodiment, a method for producing charcoal by pyrolysis of high-protein algae biomass and waste plastics comprises the following steps:

[0040]⑴Crush and grind waste plastics (the main component is PVC (polyvinyl chloride)) and high-protein algae biomass (enteromorpha and shield fruit algae) to particles with a particle size of 1mm, and weigh them according to the mass ratio of 3:2 After drying, 0.6kg of waste plastics and 0.4kg of high-protein algae biomass were put into their respective pyrolysis devices, both of which were in the form of fixed beds.

[0041] (2) Introduce carrier gas—nitrogen gas into the pyrolysis device where the waste plastic is located (waste plastic pyrolysis device), the flow rate of the carrier gas is set by the flow controller, and the set reaction flow rate is 150ml / min;

[0042] (3) Set the temperature of the two pyrolysis devices respectively through two temperature controllers. The temperature set for the waste plastic pyrolysis...

Embodiment 3

[0047] In this embodiment, a method for producing charcoal by pyrolysis of high-protein algae biomass and waste plastics comprises the following steps:

[0048] ⑴Crush and grind waste plastics (the main component is PVC (polyvinyl chloride)) and high-protein algae biomass (asparagus and red leek) to particles with a particle size of 1.2mm, according to the mass ratio of 3:1 Weigh 0.75kg of waste plastics and 0.25kg of high-protein algae biomass, and after drying, put them into their respective pyrolysis devices. Both pyrolysis devices are in the form of fixed beds.

[0049] (2) Introduce carrier gas—nitrogen gas into the pyrolysis device where the waste plastic is located (waste plastic pyrolysis device), the flow rate of the carrier gas is set by the flow controller, and the set reaction flow rate is 60ml / min;

[0050] (3) Set the temperature of the two pyrolysis devices respectively through two temperature controllers. The temperature set for the waste plastic pyrolysis devi...

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Abstract

A method of pyrolyzing high-protein algae and waste plastics with gas-solid two-phase mixed chlorine removal to produce charcoal. (1) Separately crush waste plastics and high-protein algae biomass, grind them into granules, and put them into two pyrolysis devices after drying (2) Introduce carrier gas into the pyrolysis device where the waste plastic is located, and set the reaction flow rate; (3) Set the temperature of the two pyrolysis devices respectively, the first pyrolysis of waste plastic will generate HCl gas, high protein Algae biomass is pyrolyzed to produce algae biochar, and HCl gas and carrier gas are passed into the pyrolysis device where the high-protein algae biomass is located, and HCl gas reacts with algae biochar; (4) Adjust the location of waste plastics The temperature of the pyrolysis device, the second pyrolysis of waste plastics produces biochar. The invention adopts the segmented pyrolysis method to maximize the removal of the chlorine element in the waste plastic in the form of HCl, effectively removes the toxic substance chlorine in the waste plastic, and solves the problem of "white pollution".

Description

technical field [0001] The invention relates to the field of solid waste reuse technology and biomass energy, in particular to a method for pyrolyzing high-protein algae and waste plastics to remove chlorine and produce carbon by gas-solid two-phase mixing. Background technique [0002] With the continuous progress of industrial production, the quality of people's living standards has been continuously improved, but the resulting "white pollution" problem cannot be underestimated. White pollution refers to the pollution of the environment by non-degradable plastic waste that can be seen at any time in urban and rural garbage or scattered everywhere. [0003] At present, there is no better way to deal with waste plastics to eliminate its impact on the environment. The usual practice is to process waste plastics together with other wastes by technologies such as landfill, composting, and incineration. Among them, the incineration treatment technology has been widely promoted...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B53/02C10B53/07C10B57/02B09B5/00B09B3/00
CPCC10B53/02C10B53/07C10B57/02B09B3/00B09B5/00B09B3/40Y02P20/143Y02E50/10
Inventor 徐姗楠孙洋凯王爽
Owner SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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