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A method for producing hydrogen by synergistic steam reforming of methanol-glycerin and a catalyst used in the method for producing hydrogen

A steam reforming and catalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, heterogeneous catalyst chemical elements, physical/chemical process catalysts, etc., can solve problems such as high cost and indigestion in the market , to prolong the life, reduce the generation of carbon deposits, and promote the dispersion of the active phase

Inactive Publication Date: 2017-10-27
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, crude glycerin is mainly sold as refined glycerin through refining and purification, which is not only costly, but also cannot be digested by the market, so a new outlet must be selected for biodiesel by-products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032](1) Preparation of attapulgite-supported nickel catalyst: after attapulgite is pulverized, acid-activated, and dried, it is impregnated in nickel, calcium, cerium and iron soluble salts with a total concentration of soluble salts of 1.0-1.5mol / L In the solution, the nickel, calcium, cerium and iron active components are adsorbed on the surface of the attapulgite, dried to obtain a catalyst precursor, cooled and roasted, and the attapulgite-supported nickel catalyst is obtained;

[0033] (2) Hydrogen production by methanol-glycerol synergistic steam reforming: use a continuous flow type atmospheric pressure fixed bed reactor, control the temperature inside the reactor through a temperature controller, and fill the catalyst bed with 0.5-1g of unevenness prepared in step (1) Rod clay loaded nickel catalyst, quartz sand is added to the upper and lower parts of the attapulgite loaded nickel catalyst, and the N 2 Pass it into the reactor, heat up to 500°C, pass hydrogen to act...

Embodiment 1

[0039] (1) Preparation of attapulgite-supported nickel catalyst

[0040] The attapulgite powder is extruded, sheared, and crushed to obtain attapulgite powder with a particle size of 200 meshes. The attapulgite powder is soaked in dilute hydrochloric acid with a mass concentration of 5% for 8 hours to activate the attapulgite powder and become fluffy. The similar sol-like form, and then repeatedly washed with deionized water to neutralize the precipitate, the activated attapulgite is represented by PG.

[0041] According to NiO:CaO:CeO 2 : Fe 2 o 3 : PG mass ratio is 2:1:1:1:15 and Ni(NO 3 ) 2 ·6H 2 O, Fe(NO 3 ) 3 9H 2 O, Ce(NO 3 ) 3 ·6H 2 O, Ca(NO 3 ) 2 4H 2 O in a 150ml beaker, add deionized water to dissolve, so that the total concentration of soluble salts is 1.0mol / L, then add PG powder while heating and stirring, stir for 20min, immerse at room temperature for 12 hours, remove the supernatant, and leave The suspension is directly filtered under reduced pre...

Embodiment 2

[0055] (1) Preparation of attapulgite-supported nickel catalyst

[0056] The attapulgite powder is extruded, sheared, and crushed to obtain attapulgite powder with a particle size of 200 meshes. The attapulgite powder is soaked in dilute hydrochloric acid with a mass concentration of 10% for 12 hours to activate the attapulgite powder and become fluffy. The similar sol-like form, and then repeatedly washed with deionized water to neutralize the precipitate, the activated attapulgite is represented by PG.

[0057] Weigh Ni(NO 3 ) 2 ·6H 2 O, Fe(NO 3 ) 3 9H 2 O, Ce(NO 3 ) 3 ·6H 2 O, Ca(NO 3 ) 2 4H 2 O in a 150ml beaker, add deionized water to dissolve, so that the total concentration of soluble salts is 1.25mol / L, then add PG powder while heating and stirring, stir for 50min, immerse at room temperature for 16 hours, remove the supernatant, and the remaining The suspension was directly filtered under reduced pressure, and the resulting filter cake was dried in an oven...

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Abstract

The invention discloses a hydrogen production method by reforming methanol-glycerol in cooperation with water vapor. The method comprises the steps of (1) processing attapulgite, dipping the attapulgite into a soluble salt solution of nickel, calcium, cerium and iron, drying after active ingredients are adsorbed on the surface of the attapulgite to obtain a catalyst precursor, cooling and roasting to obtain an attapulgite-loaded nickel catalyst; (2) placing the catalyst in a constant-temperature environment, introducing H2 for activating the catalyst at 500 DEG C, cooling, mixing up a mixture of methanol and glycerin at the molar ratio of (1-6):1 with water, gasifying the mixture of methanol, glycerol and water through a preheater, feeding the gasified gas into a reactor to subject the gasified gas to the catalytic reforming reaction, cooling an obtained product to achieve the gas-liquid separation, and preparing a hydrogen-rich synthesis gas. The hydrogen production process through reforming methanol, glycerol and water vapor is conducted based on the inter-coupling and coordinating effect of glycerol and methanol, instead of the simple superposition of the gasification processes of methanol, glycerol and water vapor. Therefore, the hydrogen production speed and the hydrogen production depth through reforming glycerol and methanol are improved.

Description

technical field [0001] The invention belongs to the field of hydrogen production, and in particular relates to a hydrogen production method of methanol-glycerol cooperative steam reforming and a catalyst used in the hydrogen production method. Background technique [0002] With the intensification of the energy crisis, seeking new energy sources that can replace fossil fuels has become a research hotspot. Energy issues have a major impact on the national economy and national development, so my country also takes the development of new energy as a strategy. [0003] Among many new energy sources, hydrogen energy has become one of the most ideal energy sources in the 21st century. This is because, in the case of burning the same weight of coal, gasoline and hydrogen, hydrogen produces the most energy, and the product of its combustion is water, without ash and waste gas, and will not pollute the environment; at present, the production of hydrogen mainly includes Two types: f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/32B01J23/83
CPCB01J23/002B01J23/83B01J2523/00C01B3/326C01B2203/0233C01B2203/0838C01B2203/1058C01B2203/1217B01J2523/23B01J2523/3712B01J2523/842B01J2523/847
Inventor 袁振宏苗长林吕鹏梅凡佩李惠文罗文杨玲梅刘姝娜庄新姝王忠铭
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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