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A method for preparing high-content aromatic hydrocarbon products from oily sludge

A technology with high content of aromatic hydrocarbons, applied in chemical instruments and methods, preparation of liquid hydrocarbon mixtures, and treatment of hydrocarbon oils, etc., can solve the problems of low yield of aromatic hydrocarbons and large consumption of fossil fuels, and achieve simple preparation process and low cost Low, High Feasibility Effects

Active Publication Date: 2019-03-29
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, aromatics are mainly extracted and prepared from fossil fuels, mainly from the refining of coal tar, which consumes a lot of fossil fuels. Some researchers also prepare aromatic compounds by catalyzing biomass, but because biomass contains oxygen Higher amount, thus lower yield of aromatics

Method used

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  • A method for preparing high-content aromatic hydrocarbon products from oily sludge
  • A method for preparing high-content aromatic hydrocarbon products from oily sludge
  • A method for preparing high-content aromatic hydrocarbon products from oily sludge

Examples

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Effect test

Embodiment 1

[0029] 5.48g Zn(NO 3 ) 2 ·6H 2 The aqueous solution of O solid was added dropwise to 40 g of conventional ZSM-5 molecular sieve powder obtained after vacuum degassing for 1 hour, impregnated at room temperature for 12 hours, and then rotary evaporated under vacuum and 60 ° C water bath conditions for 1 hour, and then heated at 110 ° C Bake for 12 hours, and then calcined at 550°C for 5 hours in air atmosphere. After natural cooling, a massive solid is obtained, which is ground into 100-200 mesh (0.074-0.150mm) powder to obtain a molecular sieve catalyst with a zinc loading of 3%. After uniformly mixing 6g of the obtained zinc-loaded molecular sieve powder with 6g of quartz sand, put it into the second section of the tube furnace to ensure that the length of the catalytic section is 90mm, and then raise the temperature of the second section to 500°C and keep it warm. Put 1.5g of oily sludge in a porcelain boat, put it into the first section of the tube furnace, and raise the ...

Embodiment 2

[0035] 5.48g Zn(NO 3 ) 2 ·6H 2The aqueous solution of O solid was added dropwise to 20 g of conventional ZSM-5 molecular sieve powder obtained after vacuum degassing for 1 hour, impregnated at room temperature for 12 hours, and then rotary evaporated under vacuum and 60 ° C water bath conditions for 1 hour, and then heated at 110 ° C Bake for 12 hours, and then calcined at 550°C for 5 hours in air atmosphere. After natural cooling, a massive solid is obtained, which is ground into 100-200 mesh (0.074-0.150mm) powder to obtain a molecular sieve catalyst with a zinc loading of 6%. After uniformly mixing 6g of the obtained zinc-loaded molecular sieve powder with 6g of quartz sand, put it into the second section of the tube furnace to ensure that the length of the catalytic section is 90mm, and then raise the temperature of the second section to 500°C and keep it warm. Put 1.5g of oily sludge in a porcelain boat, put it into the first section of the tube furnace, and raise the t...

Embodiment 3

[0037] 5.48g Zn(NO 3 ) 2 ·6H 2 The aqueous solution of O solid was added dropwise to 40 g of conventional ZSM-5 molecular sieve powder obtained after vacuum degassing for 1 hour, impregnated at room temperature for 12 hours, and then rotary evaporated under vacuum and 60 ° C water bath conditions for 1 hour, and then heated at 110 ° C Bake for 12 hours, and then calcined at 550°C for 5 hours in air atmosphere. After natural cooling, a massive solid is obtained, which is ground into 100-200 mesh (0.074-0.150mm) powder to obtain a molecular sieve catalyst with a zinc loading of 3%. After uniformly mixing 6g of the obtained zinc-loaded molecular sieve powder with 6g of quartz sand, put it into the second section of the tube furnace to ensure that the length of the catalytic section is 90mm, and then raise the temperature of the second section to 500°C and keep it warm. Put 1.5g of oily sludge in a porcelain boat, put it into the first section of the tube furnace, and raise the ...

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Abstract

The invention discloses a method for preparing a high-arene product from oily sludge. The method comprises the following steps: performing vacuum degassing on a conventional ZSM-5 molecular sieve, dipping in a zinc nitrate solution, performing rotary evaporation, drying, calcining and grinding, thereby acquiring the zinc-loaded molecular sieve powder; mixing the acquired molecular sieve powder with equivalent quartz sand and then putting into a second section of a tube furnace and increasing the temperature to 480-500 DEG C; putting the oily sludge into a first section of the tube furnace, increasing the temperature from 50 DEG C to 500 DEG C at 5-20 DEG C / min under nitrogen atmosphere and completing a catalytic cracking process; and centrifugally removing water, thereby acquiring the high-arene product. The content of arene in the prepared product is above 75%, wherein the content of naphthalene compound is above 50% of the total content of arene. The invention has the advantages of extensive raw material source, low cost, easiness in operation, no pollution, easily acquired catalyst, cyclic utilization of catalyst, and the like.

Description

technical field [0001] The invention relates to the technical field of resource utilization of toxic and harmful solid waste from oily sludge in the petrochemical and petroleum transportation industries, and in particular to a method for preparing a high-content aromatic hydrocarbon product from oily sludge. Background technique [0002] Oily sludge is a kind of solid waste produced in the process of crude oil mining, production, transportation, storage, refining, etc. Its composition is complex, containing a large amount of crude oil, asphaltene, wax, water, solid particles and various chemicals. It has the characteristics of refractory, toxic, harmful, etc., and is difficult to handle and pollutes the environment. It belongs to the hazardous waste category HW08 in the national hazardous waste list. Oily sludge is a three-phase highly emulsified mixture of water, oil and residue, in which the oil content is between 30-50%, and the components in the oil phase can be divided ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/00B01J29/40
CPCB01J29/405B01J35/023C10G1/00C10G2300/1003
Inventor 黄群星林炳丞王君马增益金余其王飞蒋旭光池涌严建华
Owner ZHEJIANG UNIV
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