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A kind of catalyst for producing btx aromatic hydrocarbons by utilizing organic waste and its preparation method and use, and the method for producing btx aromatic hydrocarbons

An organic waste, BTX aromatics technology, applied in catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc. The product has no application market, and the pyrolysis gas phase product is difficult to be directly and efficiently used, so as to achieve the effect of improving the utilization value, enhancing the resource value, and the preparation method is simple and feasible

Active Publication Date: 2022-08-02
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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  • A kind of catalyst for producing btx aromatic hydrocarbons by utilizing organic waste and its preparation method and use, and the method for producing btx aromatic hydrocarbons
  • A kind of catalyst for producing btx aromatic hydrocarbons by utilizing organic waste and its preparation method and use, and the method for producing btx aromatic hydrocarbons
  • A kind of catalyst for producing btx aromatic hydrocarbons by utilizing organic waste and its preparation method and use, and the method for producing btx aromatic hydrocarbons

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Embodiment 1

[0060] The schematic diagram of the preparation process of the BTX aromatics of the application of the present invention is as follows figure 1 . Specifically, the organic wastes are pyrolyzed to obtain solid-phase semi-coke and gas-phase product volatiles; the solid-phase semi-coke is ground to obtain carbon powder, that is, a catalyst is obtained; A catalyst loaded with active components is obtained.

[0061] The gas-phase product volatiles produced by the pyrolysis of gasified tar and / or organic waste undergo 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 a reaction raw material after being heated to a gaseous state or atomized; the catalytic reaction product is condensed at 70℃~140℃ for the second time to obtain a low boiling point oil BTX aromatics and combustible gas.

[0062] The flow chart of...

Embodiment 2

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

[0065] 1) In the pyrolysis reactor, the organic wastes are pyrolyzed to obtain solid-phase product semi-coke and gas-phase product volatiles; wherein, the organic wastes are waste plastics with a calorific value of 13MJ / kg and a moisture content of 30% , the heating rate during pyrolysis is 20 °C / min, and the temperature is kept at 500 °C for 60 min.

[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% to obtain a catalyst.

[0067] 3) The carbon powder obtained in step 2) is immersed in a saturated solution of nickel nitrate, and dried to obtain Ni-loaded carbon powder; wherein the mass ratio of nickel nitrate and 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 of producing BTX aromatics is as follows:

[0073] 1) In the pyrolysis reactor, the organic wastes are pyrolyzed to obtain solid-phase product semi-coke and gas-phase product volatiles; wherein, the organic wastes are waste plastics with a calorific value of 23MJ / kg and a moisture content of 27% , the heating rate during pyrolysis was 28°C / min, and the temperature was kept at 550°C for 55 minutes.

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

[0075] 3) The carbon powder obtained in step 2) is immersed in a mixed aqueous solution of zinc nitrate and manganese nitrate, and dried to obtain a carbon powder loaded with Zn and Mn; wherein, the mass ratio of zinc nitrate and carbon powder is 1:3.45, and the second The mass ratio of the metal Mn to the first m...

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Abstract

The invention provides a catalyst for producing BTX aromatic hydrocarbons by utilizing organic waste, a preparation method and application thereof, and a method for producing BTX aromatic hydrocarbons. First, a method for preparing a catalyst for producing BTX aromatic hydrocarbons from organic wastes is provided, comprising the following steps: 1) pyrolyzing the organic wastes to obtain semi-coke and volatile matter; 2) grinding the semi-coke and obtaining by gravity separation Carbon powder, the catalyst is obtained. After the carbon powder is loaded with active components, it is calcined and activated to obtain a catalyst loaded with active components. Secondly, the gas phase product volatiles or gasification tar produced by the pyrolysis of organic waste gas are catalytically reacted with the prepared catalyst or the catalyst loaded with active components to obtain low-boiling tar BTX aromatics, combustible gas and high-boiling oil. The present invention can directly turn organic wastes such as household waste into high-quality chemical products BTX aromatics, does not require valuable resources such as petroleum, methanol, ethanol, dimethyl ether or n-hexane, and reduces resource consumption.

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 aromatic hydrocarbons by utilizing organic wastes, a preparation method and application thereof, and a method for producing BTX aromatic hydrocarbons. Background technique [0002] Combustible organic wastes include plastics, paper, cloth, biomass, etc., and most domestic disposal methods are incineration or landfill. Incineration is easy to produce secondary pollution, while landfill wastes resources and causes more serious secondary pollution. Pyrolysis refers to the technology of heating waste to a certain temperature in the absence of oxygen 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 wastes such as fly ash, and no dioxins. In addition, with the gradual ...

Claims

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Application Information

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Patent Type & Authority Patents(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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