Method for catalytic pyrolysis of high temperature coal tar with iron oxide scale and magnetite

A high-temperature coal tar, catalytic pyrolysis technology, applied in catalytic cracking, cracking, petroleum industry, etc., can solve the problems of short service life of catalyst, easy coking of catalyst, difficulty of industrialization, etc., achieve high activity, good application prospect, easy Achieved effect

Inactive Publication Date: 2018-05-29

ANHUI UNIVERSITY OF TECHNOLOGY

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AI-Extracted Technical Summary

Problems solved by technology

However, since asphalt accounts for more than 50% of the high-temperature coal tar, the catalyst is easy to coke, resulting in a short service life of the exp...

Abstract

The invention discloses a method for catalytic pyrolysis of high temperature coal tar with iron oxide scale and magnetite, and belongs to the technical field of coal tar processing. The method comprises the steps: industrial waste residue iron oxide scale and iron ore magnetite which are capable of high-efficiency pyrolysis of the high temperature coal tar are selected as catalysts, and under conditions of the pyrolysis temperature of 500-800 DEG C, the mass ratio of tar to the catalyst of (0.1-10):1 and the inert gas flow velocity of 50-200 ml/min, the high temperature coal tar is converted into light tar. By use of the cheap industrial waste residue and magnetite as the catalysts, the high temperature coal tar is subjected to high-efficiency catalytic pyrolysis, and a new idea is provided for high added value utilization of the high temperature coal tar and re-utilization of the industrial waste residue; the catalytic pyrolysis process is simple to operate and easy to realize, and thus the method has good application prospect.

Application Domain

Catalytic crackingHydrocarbon oils treatment

Technology Topic

TarBrown iron oxide +8

Examples

Experimental program(8)

Example Embodiment

[0014] Example 1: Weigh 1g of iron oxide scale (containing 30-100% ferrous oxide, from Maanshan Iron and Steel Co., Ltd.) and 1g of magnetite (containing 70-100% ferroferric oxide, from Maanshan Iron and Steel Co., Ltd.) The mixture is used as a catalyst and placed in a fixed-bed reactor, and then the temperature of the catalytic cracking reactor is raised to 600°C under an inert atmosphere, 0.2g of coal tar is continuously added at this temperature, and the coal tar is catalytically heated in a nitrogen atmosphere of 100ml/min solution. The tar condensed by the catalytic pyrolysis of coal tar is collected through a constant temperature cooling tank. The collected modified tar was analyzed, and 77% was light tar, of which 12% were fatty compounds, 61% were aromatic compounds, and 27% were phenolic compounds.

Example Embodiment

[0015] Example 2: Weigh 1.2g of iron oxide scale (containing 30-100% ferrous oxide, from Maanshan Iron and Steel Co., Ltd.) and 0.8g of magnetite (containing 70-100% ferroferric oxide, from Maanshan Iron and Steel Co., Ltd.) Company) The mixture is used as a catalyst and placed in a fixed-bed reactor, and then the temperature of the catalytic cracking reactor is raised to 550°C under an inert atmosphere, 0.2g of coal tar is continuously added at this temperature, and the coal tar is carried out in a nitrogen atmosphere of 100ml/min Catalytic pyrolysis. The tar condensed by the catalytic pyrolysis of coal tar is collected through a constant temperature cooling tank. The collected modified tar was analyzed, and 72% was light tar, of which 8% were fatty compounds, 63% were aromatic compounds, and 29% were phenolic compounds.

Example Embodiment

[0016] Example 3: Weigh 1g of iron oxide scale (containing 30-100% ferrous oxide, from Maanshan Iron and Steel Co., Ltd.) and 1g of magnetite (containing 70-100% ferroferric oxide, from Maanshan Iron and Steel Co., Ltd.) The mixture is used as a catalyst and placed in a fixed bed reactor, and then the temperature of the catalytic cracking reactor is raised to 750°C under an inert atmosphere, 0.2g of coal tar is added at this temperature, and the coal tar is catalytically pyrolyzed in a nitrogen atmosphere of 100ml/min . The tar condensed by the catalytic pyrolysis of coal tar is collected through a constant temperature cooling tank. The collected modified tar was analyzed, and 70% was light tar, of which 15% were fatty compounds, 65% were aromatic compounds, and 20% were phenolic compounds.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Improve process economy
high activity

Molten salt electrolytic refining method and method for recovering and treating cathode deposition thereof

ActiveCN103556187AReduction of recycling energy consumptionImprove process economy

Owner:PANGANG GROUP RESEARCH INSTITUTE CO LTD

Method and system for treating and/or purifying water

ActiveCN111372896AImprove process economyreduce risk

Owner:BLUCHER GMBH

Method for catalytic pyrolysis of high temperature coal tar with iron oxide scale and magnetite

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

Example Embodiment

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Description & Claims & Application Information

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