Catalyst for producing BTX aromatic hydrocarbon by using organic waste, preparation method and application thereof, and method for producing BTX aromatic hydrocarbon

A technology of organic waste and BTX aromatics, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc. Difficult utilization of phase products, no application market for pyrolysis solid phase products, etc.

Active Publication Date: 2021-04-30
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a catalyst for producing BTX aromatics from organic waste, its preparation method and use, and a method for producing BTX aromatics, which are used to solve the problem of organic waste in the prior art. The current situation that the gas phase products of pyrolysis are difficult to be directly and efficiently utilized, the liquid phase products are difficult to use, and the solid phase products of pyrolysis have no application market

Method used

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  • Catalyst for producing BTX aromatic hydrocarbon by using organic waste, preparation method and application thereof, and method for producing BTX aromatic hydrocarbon
  • Catalyst for producing BTX aromatic hydrocarbon by using organic waste, preparation method and application thereof, and method for producing BTX aromatic hydrocarbon
  • Catalyst for producing BTX aromatic hydrocarbon by using organic waste, preparation method and application thereof, and method for producing BTX aromatic hydrocarbon

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Experimental program
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Effect test

Embodiment 1

[0060] The preparation flow diagram of the BTX aromatic hydrocarbon of the present invention application is as figure 1 . Specifically, organic waste is pyrolyzed to obtain solid-phase product semi-coke and gas-phase product volatiles; solid-phase product semi-coke is ground to obtain carbon powder, that is, a catalyst; after carbon powder is loaded with active components, it is calcined and activated. A catalyst loaded with active components is obtained.

[0061] The volatile matter of the gas phase product produced by the pyrolysis of gasification tar and / or organic waste undergoes a catalytic reaction under the action of a catalyst and / or a catalyst loaded with active components, and the catalytic reaction product is first condensed at 150°C to 170°C to obtain The high-boiling point oil can be used as the reaction raw material after being heated to gaseous state or atomized; the catalytic reaction product is condensed at 70°C to 140°C for the second time to obtain low-boil...

Embodiment 2

[0064] In the present embodiment, the preparation method for producing BTX aromatics is as follows:

[0065] 1) In the pyrolysis reactor, the organic waste is pyrolyzed to obtain solid-phase product semi-coke and gas-phase product volatiles; among them, the organic waste is waste plastic, its calorific value is 13MJ / kg, and the moisture content is 30% , the heating rate during pyrolysis was 20°C / min, and the temperature was kept at 500°C for 60 minutes.

[0066] 2) Grinding the solid-phase product semi-coke obtained in step 1), passing through a 60-mesh sieve, and adopting gravity separation to obtain carbon powder with a carbon content of 53%, which is the catalyst.

[0067] 3) Immerse the carbon powder obtained in step 2) in a saturated solution of nickel nitrate, and dry to obtain Ni-loaded carbon powder; wherein the mass ratio of nickel nitrate to carbon powder is 1:6.5.

[0068] 4) The Ni-loaded carbon powder obtained in step 3) was calcined at 500° C. for 2 h in a nitro...

Embodiment 3

[0072] In the present embodiment, the preparation method for producing BTX aromatics is as follows:

[0073] 1) In the pyrolysis reactor, the organic waste is pyrolyzed to obtain solid-phase product semi-coke and gas-phase product volatiles; among them, the organic waste is waste plastic, its calorific value is 23MJ / kg, and the moisture content is 27% , the heating rate during pyrolysis was 28°C / min, and the temperature was kept at 550°C for 55min.

[0074] 2) Grinding the solid-phase product semi-coke obtained in step 1), passing through a 60-mesh sieve, and adopting gravity separation to obtain carbon powder with a carbon content of 65%, which is the catalyst.

[0075] 3) impregnating the charcoal powder obtained in step 2) in the mixed aqueous solution of zinc nitrate and manganese nitrate, and drying to obtain the charcoal powder loaded with Zn and Mn; wherein, the mass ratio of zinc nitrate and charcoal powder is 1:3.45, the second The mass ratio of the metal Mn to the f...

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Abstract

The invention provides a catalyst for producing BTX aromatic hydrocarbon from organic waste, a preparation method and application of the catalyst, and a method for producing BTX aromatic hydrocarbon. Firstly, the invention provides a preparation method of a catalyst for producing BTX aromatic hydrocarbon by utilizing organic wastes, which comprises the following steps: 1) pyrolyzing the organic wastes to obtain semicoke and volatile matters; and 2) grinding the semicoke, and carrying out gravity separation to obtain carbon powder, thereby obtaining the catalyst. And after the carbon powder is loaded with the active component, the catalyst loaded with the active component is obtained through calcination and activation. Secondly, volatile or gasified tar produced by pyrolysis of organic waste gas is catalytically reacted with the prepared catalyst or catalyst loaded with active components to obtain low boiling tar BTX aromatics, combustible gas and high boiling oil According to the method, organic wastes such as household garbage can be directly changed into high-quality chemical product BTX aromatic hydrocarbon, precious resources such as petroleum, methanol, ethanol, dimethyl ether or n-hexane are not needed, and the resource consumption is reduced.

Description

technical field [0001] The invention belongs to the field of utilization of organic wastes, and in particular relates to a catalyst for producing BTX aromatics by using organic wastes, its preparation method and use, and a method for producing BTX aromatics. Background technique [0002] Combustible organic waste includes plastic, paper, cloth, biomass, etc., and most of the treatment methods in China are incineration or landfill. Incineration easily produces secondary pollution, while landfill wastes resources and causes more serious secondary pollution. Pyrolysis refers to the technology of heating waste to a certain temperature under anaerobic conditions to obtain gas-phase combustible gas, liquid-phase oily liquid and solid-phase semi-coke. Compared with direct incineration of waste, it has the advantages of high calorific value of gas phase products, no hazardous waste such as fly ash, and no dioxin. In addition, with the gradual popularization of waste classification...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18B01J37/08B01J37/02B01J23/755B01J23/34B01J23/18B01J23/843B01J23/10B01J23/83C10B53/02C10B53/07C10G69/02C10L3/00
CPCB01J21/18B01J37/084B01J37/0201B01J23/755B01J23/34B01J23/18B01J23/8437B01J23/10B01J23/83B01J37/0036C10B53/02C10B53/07C10G69/02C10L3/00C10G2300/708C10G2400/26C10G2400/30C10G2300/405Y02P20/143Y02E50/10
Inventor 崔竞月陈德珍周铖樊文琪
Owner TONGJI UNIV
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