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TiO2 Polycrystalline foamed ceramic catalyst, preparation method thereof and method of using catalyst to catalyze waste plastics and biodiesel to produce hydrocarbons

A foamed ceramic, biodiesel technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve problems such as unfavorable large-scale production, complex reaction process, unfavorable cleaning Production and other problems, to achieve the effect of easy industrialized continuous production, simple preparation process, and improved low temperature flow performance

Active Publication Date: 2018-01-23
KUSN INNOVATION INST OF NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the precious metal platinum anode material used in the reaction process is not conducive to large-scale production and consumes a lot of electric energy. From the perspective of energy utilization and conversion, it is not a wise move
In addition, the reaction process is too complicated. In addition to hydrocarbons and unreacted methyl esters, the product also contains dibasic fatty acid esters, low molecular weight esters, propionic acid, malonic acid, CO 2 、H 2 And other substances are generated, which increases the material loss and reduces the product yield
The sodium hydroxide used in hydrolysis will inevitably bring environmental pollution problems, which is not conducive to clean production
[0011] To sum up, we can find that none of the existing technologies can solve the problems of high hydrogen consumption, catalyst sulfidation, and noble metal catalysts for efficient conversion in biodiesel to hydrocarbons.

Method used

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  • TiO2 Polycrystalline foamed ceramic catalyst, preparation method thereof and method of using catalyst to catalyze waste plastics and biodiesel to produce hydrocarbons

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Preparation of WC polycrystalline foam ceramic catalyst

[0040] Weigh 2Kg of ammonium paratungstate and carbon black respectively and add them into the ball mill, add zirconia balls and absolute ethanol according to the ratio of 1.5:2 to form a slurry, and then wet-mill for 10h. The obtained slurry was spray-dried at 100°C to obtain a precursor. Then the precursor was put into a vacuum muffle furnace and calcined at 1650°C and 10Pa for 4h to obtain a crude WC product with excess carbon black content. The WC crude product was put into an atmosphere furnace, calcined at 600 °C for 4 h under air conditions to remove excess carbon black to obtain WC powder.

[0041] Weigh 1.5Kg WC, 0.11Kg nickel nitrate, 0.21Kg pseudo-boehmite, 0.32Kg silica gel, 0.32Kg basic zinc carbonate, 0.37Kg ammonium bicarbonate, 0.49Kg starch by weight respectively, add them to the powder mixer and mix for 10h, Put the mixed material into a screw press to make a cylinder with a diameter of 2m...

Embodiment 2

[0046] The catalyst used in Example 2 was prepared according to the method disclosed in Example 1, and the preparation method is detailed in Example 1.

[0047] The pyrolysis gasification furnace filled with waste plastic PE was purged with nitrogen gas for 30 minutes, the pyrolysis temperature was set to 350°C, and the pyrolysis gasification rate of waste plastics was controlled to be 2 L / min by means of temperature programming. The cracked gas enters the gas filter filled with TiO 2 The fixed bed reactor of polycrystalline foam ceramic catalyst is catalytically reformed at 250 °C, the purpose is to catalyze waste plastics to produce a large amount of H 2 . Then the obtained oil-containing gas and waste oil biodiesel co-flow into a fixed-bed reactor filled with WC polycrystalline foam ceramic catalyst. -1 Condition, the reaction is 0.8h. The resulting product is separated and removed by a gas-liquid separator to remove CO and CO. 2 , H2 , CH 4 After mixing with low-carbo...

Embodiment 3

[0049] The catalyst used in Example 3 was prepared according to the method disclosed in Example 1, and the preparation method is detailed in Example 1.

[0050] The waste plastic PET was added to the pyrolysis gasification furnace, and the whole system was purged with nitrogen for 30 minutes. The cracked gas enters the gas filter filled with TiO 2 The fixed bed reactor of polycrystalline foam ceramic catalyst is catalytically modified at 350 °C, the purpose is to catalyze waste plastics to produce a large amount of H 2 . Then the obtained oil-containing gas and waste oil biodiesel co-flow into a fixed-bed reactor filled with WC polycrystalline foam ceramic catalyst. -1 Condition, the reaction is 0.8h. The resulting product is separated and removed by a gas-liquid separator to remove CO and CO. 2 , H 2 , CH 4 After mixing with low-carbon hydrocarbons, it enters the vacuum fractionation tower to divide the reaction products, and collects the distillate at the temperature o...

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Abstract

The invention discloses a TiO2 polycrystalline foamed ceramic catalyst which is of double-layer porous structure, having an outermost layer of Ti-Fe-O solid solution, a middle layer of Zr-Al-Ce-O solid solution and a core of silica gel; the molar ratio of Ti, Fe, Zr, Al, Ce and O is (2.2-3.5):(1.0-1.5):(1.4-1.8):(2.6-3.0):(0.01-0.05):(15-18). The invention discloses a preparation method of the TiO2 polycrystalline foamed ceramic catalyst and also discloses a method of using the TiO2 polycrystalline foamed ceramic catalyst to catalyze waste plastics and biodiesel to produce hydrocarbons; wasteplastics are used as hydrogen donors, a WC polycrystalline foamed ceramic catalyst is used as a hydrodeoxygenation and isomerization catalyst, and the TiO2 polycrystalline foamed ceramic catalyst is used as a catalytic modifying catalyst, and biodiesel is catalyzed in a lab fixed-bed reactor to perform hydrodeoxygenation and isomerization to obtain liquid hydrocarbon fuels by conversion.

Description

technical field [0001] The present invention relates to a kind of TiO 2 The invention relates to a polycrystalline foam ceramic catalyst, a preparation method thereof and a method for catalyzing waste plastics and biodiesel to produce hydrocarbons by utilizing the same, belonging to the technical field of oil product upgrading. Background technique [0002] Biodiesel is known as biodiesel because it can be directly used in current diesel engine systems, has better combustion performance than petrochemical diesel, is safer in production, storage and transportation, and has good biodegradability, environmental friendliness and renewability. As "liquid solar energy", it is considered to be one of the best alternative energy sources for petrochemicals. [0003] With the large-scale use of biodiesel, some of its own problems have become increasingly prominent. For example, the calorific value of biodiesel during combustion is about 10% lower than that of petrochemical diesel. If...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83C10G3/00C10G53/02C10G1/00
CPCY02E50/10Y02P30/20
Inventor 刘士涛孙艳吴聪萍刘建国邹志刚
Owner KUSN INNOVATION INST OF NANJING UNIV
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