Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for catalytically converting tar

A technology for catalytic conversion and tar, applied in the field of chemical industry, can solve the problems of high price of metal-supported catalysts, difficult to promote on a large scale, etc., and achieve the effects of simple method, low cost and high catalytic efficiency

Active Publication Date: 2018-07-31
INST OF PROCESS ENG CHINESE ACAD OF SCI
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned metal-supported catalysts are expensive, and it is difficult to promote them on a large scale in industry.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Catalyst preparation: a nickel nitrate solution with a concentration of 27wt% was impregnated in 11g of Al with an average pore size of 7.5nm by an equal volume impregnation method 2 o 3 On the particles, Al impregnated with nickel nitrate 2 o 3 The particles were left to stand at room temperature for 12 hours, then dried in an oven at 30°C for 3 hours and then in an oven at 50°C for 8 hours; then calcined at 500°C for 5 hours; all the calcined supported catalyst precursors were passed through a tube furnace 50% H at a flow rate of 300mL / min 2 In the atmosphere of mixed gas with 50% Ar gas, the temperature was raised to 550° C. and kept for 2 hours to obtain a metal-supported catalyst.

[0061] Catalytic conversion of tar: rapid pyrolysis of 20g straw bio-oil (calorific value 17MJ / kg, water content 32%, phenolic content 33%, carboxylic acid content 7%, five-membered ring oxygenate content 16%, other components Content 12%), 4g water, 36g methyl alcohol and 4g cataly...

Embodiment 2

[0064] Catalyst preparation: a concentration of 24wt% nickel chloride solution was impregnated in 13g of Al with an average pore diameter of 7.5nm by an equal volume impregnation method 2 o 3 On the particles, Al impregnated with nickel nitrate 2 o 3 The particles were left to stand at room temperature for 12 hours, then dried in an oven at 30°C for 3 hours and then in an oven at 50°C for 8 hours; then calcined at 500°C for 5 hours; all the calcined supported catalyst precursors were passed through a tube furnace 50% H at a flow rate of 300mL / min 2 In the atmosphere of mixed gas with 50% Ar gas, the temperature was raised to 550° C. and kept for 2 hours to obtain a metal-supported catalyst.

[0065] Catalytic conversion of tar: 20g Liulin coal low-temperature pyrolysis tar (calorific value 27MJ / kg, water content 10%, phenolic content 37%, aromatic hydrocarbon and chain hydrocarbon content 17%, polycyclic hydrocarbon content 16%, other components Content 20%), 44g methyl al...

Embodiment 3

[0068] Catalyst preparation: impregnate 11 g of activated carbon particles with an average pore size of 0.7 nm with a concentration of 14 wt % nickel acetate solution using an equal volume impregnation method, leave the activated carbon particles impregnated with nickel nitrate at room temperature for 12 hours, and then place it Dry in an oven at 30°C for 3h and then in an oven at 50°C for 8h; then calcinate at 500°C for 5h; pass all the calcined catalyst precursors through a tube furnace under pure H at a flow rate of 300mL / min 2 Under ambient conditions, the temperature was raised to 550° C. and kept for 2 hours to obtain a metal-supported catalyst.

[0069] Catalytic conversion of tar: medium temperature pyrolysis tar of 20g Hailaer coal (calorific value 34MJ / kg, water content 8%, phenolic content 22%, aromatic hydrocarbon and chain hydrocarbon content 26%, polycyclic hydrocarbon content 24%, other components content 20%) 6g of water, 36g of methanol and 2g of catalyst into...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
heating valueaaaaaaaaaa
heating valueaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for catalytically converting tar. The method comprises mixing tar, methanol or methanol aqueous solution and a supported nickel-based catalyst, heating the mixture sothat the tar undergoes a hydrodeoxygenation reaction, cooling the reaction product, and collecting the liquid which is refined oil subjected to catalytic conversion. The tar is subjected to catalytichydrogenation treatment under the action of the methanol or methanol aqueous solution and the supported nickel-based catalyst so that a series of transportation, storage and operation related cost and safety problems caused by large-scale use of external hydrogen are solved. Compared with a precious metal supported catalyst and an Ni-Al alloy catalyst, the nickel-based supported catalyst has a low price so that a cost is reduced. The method has the advantages of high catalytic efficiency, low cost, simple method, non-toxic reagents, mild operating conditions and easy collection of products, reduces a cost, improves the production profit, and has a good industrialization prospect.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a method for catalytic conversion of tar. Background technique [0002] Tar obtained from coal or biomass dry distillation is a complex mixture system and is an inexpensive source of fuel. However, due to the complex composition of the components in pyrolysis tar, especially the high content of phenols, the tar has high oxygen content, acidity, corrosion and polarity, and low calorific value, which limits its use as a liquid fuel. Or the application of mixing with gasoline and diesel oil, so it is necessary to refine it to reduce the content of phenolic compounds in the tar and increase the content of aromatics, thereby reducing the acidity, corrosion, and polarity of the tar, and increasing the calorific value of the tar. Among them, the polarity of tar is an important factor affecting its blending effect with gasoline and diesel, that is, the higher the polarity of tar, the be...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J29/04C10G47/12
CPCB01J23/755B01J29/04C10G47/12C10G2300/70C10G2400/30
Inventor 王泽宋文立林伟刚李松庚伏朝林曾影
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com