Continuous operation method for microwave high-temperature pyrolysis of solid material comprising organic matter

Patent metadata

Field	Value
Publication number	US-11926794-B2
Application number	US-201917289933-A
Country	US
Kind code	B2
Filing date	Sep 27, 2019
Priority date	Oct 29, 2018
Publication date	Mar 12, 2024
Grant date	Mar 12, 2024

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

The invention claimed is:

1. A continuous operation method for microwave high-temperature pyrolysis of a solid material comprising an organic matter, wherein 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 of 500-3000° C. 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 , wherein the liquid organic medium refers to a medium that is liquid at a temperature of 60° C. and contains at least one carbon atom.

3. The method according to claim 1 , wherein the solid material comprising an organic matter comprises 10%-90% 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 , wherein 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.

5. The method according to claim 1 , wherein the microwave field is generated by a microwave device, the microwave power of the microwave field is 200W-100 KW.

6. The method according to claim 1 , wherein the solid material comprising an organic matter is pulverized before being mixed with the liquid organic medium.

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

8. The method according to claim 7 , wherein 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.

9. The method according to claim 8 , wherein the proportion of the carbon material is 0.001%-99%, 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 carbonizable organic matter or a mixture comprising a carbonizable organic matter, 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, halide, and combinations thereof;.

10. The method according to claim 8 , wherein the method comprises preparation of the porous composite material by a method comprising the following steps:
(1) immersing the inorganic porous framework or inorganic porous framework precursor into a solution or dispersion of the carbon material and/or carbon material precursor, so that pores of the inorganic porous framework or inorganic porous framework precursor are filled with the solution or dispersion;
(2) heating and drying the porous material obtained in step (1), so that the carbon material or the carbon material precursor is precipitated or solidified and supported on the inorganic porous framework or the inorganic porous framework precursor;
(3) further performing the following step when at least one of the carbon material precursor or the inorganic porous framework precursor is used as a starting material: heating the porous material obtained in step (2) under an inert gas atmosphere to convert the inorganic porous framework precursor into an inorganic porous framework, and/or reducing or carbonizing the carbon material precursor.

11. The method according to claim 10 , wherein
the solution or dispersion of the carbon material or its precursor in step (1) comprises a solvent selected from the group consisting of benzene, toluene, xylene, trichlorobenzene, chloroform, cyclohexane, ethyl caproate, butyl acetate, carbon disulfide, ketone, acetone, cyclohexanone, tetrahydrofuran, dimethylformamide, water and alcohol, and combinations thereof; and/or
the concentration of the solution or dispersion in step (1) is 0.001-1 g/mL; and/or
in step (1), the carbon material and/or carbon material precursor comprises 0.001%-99.999% of the total mass of the inorganic porous framework material or the inorganic porous framework material precursor and the carbon material and/or the carbon material precursor.

12. The method according to claim 10 , wherein the heating and drying in step (2) is carried out at a temperature of 50-250° C.

13. The method according to claim 10 , wherein
the inorganic porous framework precursor is selected from the group consisting of ceramic precursors, porous materials composed of a carbonizable organic matter or porous materials composed of a mixture comprising a carbonizable organic matter, and combinations thereof; and/or
the carbon material precursor is graphene oxide, modified carbon nanotubes, modified carbon nanofibers, modified graphite, modified carbon black, modified carbon fibers, carbonizable organic matters or mixtures comprising a carbonizable organic matter and combinations thereof; and/or
the heating of step (3) is carried out at a temperature of 400-1800° C.

14. The method according to claim 1 , wherein the solid material comprising an organic matter is a waste synthetic polymer material or a waste natural polymer material.

15. A system for implementing the method according to claim 1 , comprising
a) a mixing device configured to mix the solid material comprising an organic matter with a liquid organic medium;
b) a transferring device configured to continuously transfer the resulting mixture from the mixing device a) to a microwave field; and
c) a device for generating a microwave field, configured to continuously contact the mixture from the transferring device b) with a strongly wave-absorbing material under an inert atmosphere or under vacuum, 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.

16. The system according to claim 15 , wherein
the mixing device a) is a mixer with a stirring mechanism; and/or
the transferring device b) is a pump; and/or
the device for generating a microwave field is a microwave device, for example.

17. The method according to claim 2 , wherein the liquid organic medium is one selected from the group consisting of hydrocarbon oils, vegetable oils, silicone oils, ester oils, phosphate esters, alcohols, and a mixture thereof.

18. The method according to claim 2 , wherein the liquid organic medium is 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.

19. The method according to claim 3 , wherein the solid m

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

• C10G1/10 Primary

  from rubber or rubber waste · CPC title

• B01J19/0066

  Stirrers (mixing per se B01F) · CPC title

• B01J19/126

  Microwaves · CPC title

• C10B19/00 Primary

  Heating of coke ovens by electrical means · CPC title

• C10B53/02

  of cellulose-containing material (production of pyroligneous acid C10C5/00) · CPC title