Continuous Operation Method for Microwave High-Temperature Pyrolysis of Solid Material Comprising Organic Matter

Patent metadata

Field	Value
Publication number	US-2022010216-A1
Application number	US-201917289933-A
Country	US
Kind code	A1
Filing date	Sep 27, 2019
Priority date	Oct 29, 2018
Publication date	Jan 13, 2022
Grant date	—

Abstract

A continuous operation method is employed for the microwave high-temperature pyrolysis of a solid material containing an organic matter. The method includes the steps of mixing a solid material containing an organic matter with a liquid organic medium; transferring the obtained mixture to a microwave field; and in the microwave field, continuously contacting the mixture with a strong wave absorption material in an inert atmosphere or in vacuum. The strong wave absorption material continuously generates a high temperature under a microwave such that the solid material containing an organic matter and the liquid organic medium are continuously pyrolyzed to implement a continuous operation.

First claim

1 . Continuous operation method for the microwave high-temperature pyrolysis of a solid material comprising an organic matter, characterized in that the method comprises the following continuously performed steps:
mixing the solid material comprising an organic matter with a liquid organic medium; transferring the resulting mixture to a microwave field; and in the microwave field, under an inert atmosphere or under vacuum, continuously contacting the mixture with a strongly wave-absorbing material, wherein the strongly wave-absorbing material continuously generates a high temperature in the microwave field, so that the solid material comprising an organic matter and the liquid organic medium are continuously pyrolyzed together.

2 . The method according to claim 1 , characterized in that the liquid organic medium refers to a medium that is liquid at a temperature of 60° C. and contains at least one carbon atom, preferably one selected from the group consisting of hydrocarbon oils, vegetable oils, silicone oils, ester oils, phosphate esters and alcohols, or a mixture thereof; and more preferably one selected from the group consisting of hydrocarbon oils and vegetable oils, or a mixture thereof; preferably, the liquid organic medium is selected from the group consisting of liquid petroleum hydrocarbons and mixtures thereof and vegetable oils and mixtures thereof; preferably at least one selected from the group consisting of crude oil, naphtha, palm oil, rapeseed oil, sunflower oil, soybean oil, peanut oil, linseed oil and castor oil; and more preferably at least one selected from the group consisting of naphtha, palm oil, rapeseed oil, sunflower oil and soybean oil.

3 . The method according to claim 1 , characterized in that the solid material comprising an organic matter comprises 10%-90%, preferably 20%-80%, more preferably 30%-75% by mass of the total amount of the solid material comprising an organic matter and the liquid organic medium.

4 . The method according to claim 1 , characterized in that the weight ratio of the feed amount per minute of the solid material comprising an organic matter to the strongly wave-absorbing material is 1:99-99:1, preferably 1:50-50:1, and more preferably 1:30-30:1.

5 . The method according to claim 1 , characterized in that the microwave field is generated by a microwave device, such as household microwave oven or industrialized microwave device (such as microwave pyrolysis reactor), preferably, the microwave power of the microwave field is 200 W-100 KW, preferably 300 W-80 KW, more preferably 500 W-60 KW.

6 . The method according to claim 1 , characterized in that the solid material comprising an organic matter is pulverized before being mixed with the liquid organic medium, preferably, the particle size after pulverization is 0.001-10 mm, preferably 0.01-8 mm, more preferably 0.05-5 mm.

7 . The method according to claim 1 , characterized in that the strongly wave-absorbing material is one selected from the group consisting of activated carbon, carbon black, graphite, carbon fiber, silicon carbide, metal oxides and porous composite materials that can generate electric arcs in a microwave field, or a mixture thereof; preferably one selected from the group consisting of activated carbon, graphite, silicon carbide and porous composite materials that can generate electric arcs in a microwave field, or a mixture thereof; and more preferably a porous composite material that can generate electric arcs in a microwave field.

8 . The method according to claim 7 , characterized in that the porous composite material that can generate electric arcs in a microwave field comprises an inorganic porous framework, and a carbon material supported on the inorganic porous framework, wherein the average pore diameter of the inorganic porous framework is preferably 0.01-1000 μm, more preferably 0.05-1000 μm, more preferably 0.05-500 μm, more preferably 0.2-500 μm, more preferably 0.5-500 μm, and more preferably 0.5-250 μm; and preferably, the porosity of the inorganic porous framework is 1%-99.99%, preferably 10%-99.9%, and more preferably 30%-99%.

9 . The method according to claim 8 , characterized in that the proportion of the carbon material is 0.001%-99%, preferably 0.01%-90%, and more preferably 0.1%-80% based on the total mass of the porous composite material; and/or
the electric arcs generated by the porous composite material in a microwave field make the temperature of the porous composite material reach above 1000° C.; and/or the carbon material is selected from the group consisting of graphene, carbon nanotubes, carbon nanofibers, graphite, carbon black, carbon fibers, carbon dots, carbon nanowires, products obtained by carbonization of an carbonizable organic matter or a mixture comprising a carbonizable organic matter, and combinations thereof, and is preferably selected from the group consisting of graphene, carbon nanotubes, products obtained by carbonization of an carbonizable organic matter or a mixture comprising a carbonizable organic matter, and combinations thereof; preferably, the carbonizable organic matter is an organic polymer compound, comprising synthetic organic polymer compounds, which are preferably rubbers, or plastics, including thermosetting plastics and thermoplastics, and are more preferably selected from the group consisting of epoxy resin, phenolic resin, furan resin, polystyrene, styrene-divinylbenzene copolymer, polyacrylonitrile, polyaniline, polypyrrole, polythiophene, styrene butadiene rubber, polyurethane rubber and combinations thereof; and natural organic polymer compounds, which are preferably at least one selected from the group consisting of starch, viscose fiber, lignin and cellulose; preferably, the mixture comprising a carbonizable organic matter is the mixture of a carbonizable organic matter and other metal-free organic matter and/or metal-free inorganic matter; more preferably is selected from the group consisting of coal, natural pitch, petroleum pitch or coal tar pitch and combinations thereof; and/or the inorganic porous framework is an inorganic material having a porous structure, which is selected from the group consisting of carbon, silicate, aluminate, borate, phosphate, germanate, titanate, oxide, nitride, carbide, boride, sulfide, silicide, and halide and combinations thereof; preferably is selected from the group consisting of carbon, silicate, titanate, oxide, carbide, nitride, and boride and combinations thereof; wherein the oxide is preferably selected from the group consisting of aluminum oxide, silicon oxide, zirconium oxide, magnesium oxide, cerium oxide, and titanium oxide and combinations thereof; the nitride is preferably selected from the group consisting of silicon nitride, boron nitride, zirconium nitride, hafnium nitride, and tantalum nitride and combinations thereof; the carbide is preferably selected from the group consisting of silicon carbide, zirconium carbide, hafnium carbide, and tantalum carbide and combinations thereof; and the boride is preferably selected from the group consisting of zirconium boride, hafnium boride, and tantalum boride and combinations thereof; preferably, the inorganic porous framework is at least one of the following: a carbon framework obtained after carbonization of a polymer sponge, a porous framework constituted by inorganic fibers, an inorganic sponge framework, a framework constituted by packing of inorganic particles, a ceramic porous framework obtained after baking a ceramic porous framework precursor, a ceramic fiber framework obtained after baking a ceramic fiber framework precursor; preferably a framework after carbonization of melamine sponge, a framework after carbonization of phenolic resin sponge, a porous framework of alumi

Assignees

• China Petroleum & Chem Corp
• Beijing Res Inst Chemical Ind China Petroleum & Chemical Corp

Inventors

• Jiang Haibin
• Qiao Jinliang
• Zhang Xiaohong
• Liu Wenlu
• Gao Jianming
• Qi Guicun
• Song Zhihai
• Lai Jinmei
• Cai Chuanlun
• Li Binghai
• Wang Xiang
• Ru yue
• Zhang Hongbin
• Han Peng
• Zhang Jiangru
• Jiang Chao
• Guo Zhaoyan

Classifications

• C04B2235/80

  Phases present in the sintered or melt-cast ceramic products other than the main phase · CPC title

• C04B2235/667

  Sintering using wave energy, e.g. microwave sintering · CPC title

• C04B2235/5288

  Carbon nanotubes · CPC title

• C04B2235/5244

  Silicon carbide · CPC title

• C04B2235/524

  Non-oxidic, e.g. borides, carbides, silicides or nitrides · CPC title