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Sodium-modified chemical-looping hydrogen production synergistic CO2 trapping system

A chemical chain, CO2 technology, applied in the direction of inorganic chemistry, bulk chemical production, chemical instruments and methods, etc., can solve the problems of corrosion equipment, easy deactivation, etc., to avoid carbon deposition, fast reaction speed, save operating costs Effect

Active Publication Date: 2020-05-15
NINGXIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason may be that the traditional Na-containing compounds used in the coal gasification process are prone to deactivation and corrode equipment.

Method used

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  • Sodium-modified chemical-looping hydrogen production synergistic CO2 trapping system
  • Sodium-modified chemical-looping hydrogen production synergistic CO2 trapping system
  • Sodium-modified chemical-looping hydrogen production synergistic CO2 trapping system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Press Fe 2 o 3 :Al 2 o 3 The mass ratio is 4:16, weigh Fe(NO 3 ) 3 •9H 2 O, γ-Al2O3, without adding NaAlO2, Fe(NO 3 ) 3 •9H 2 O was impregnated into γ-Al2O3, stirred on a magnetic stirrer at 90°C for 2h, dried in a drying oven at 120°C for 12h, and moved into a muffle furnace for calcination at 900°C for 3h. The product is recorded as Fe4Al6.

Embodiment 2

[0029] by NaAlO 2 :Fe 2 o 3 :Al 2 o 3 The mass ratio is 0.5:4:6, weigh Fe(NO3)3•9H 2 O, γ-Al 2 o 3 , NaAlO 2 , the NaAlO 2 and Fe(NO 3 ) 3 •9H 2 O impregnation into γ-Al 2 o 3 , stirred on a magnetic stirrer at 90°C for 2h, dried in a drying oven at 120°C for 12h, and moved into a muffle furnace for calcination at 900°C for 3h. The product is recorded as Na0.5Fe4Al6.

Embodiment 3

[0031] by NaAlO 2 :Fe 2 o 3 :Al 2 o 3 The mass ratio is 1:4:16, weigh Fe(NO3)3•9H 2 O, γ-Al 2 o 3 , NaAlO 2 , the NaAlO 2 and Fe(NO3)3•9H 2 O impregnation into γ-Al 2 o 3 , stirred on a magnetic stirrer at 90°C for 2h, dried in a drying oven at 120°C for 12h, and moved into a muffle furnace for calcination at 900°C for 3h. The product is recorded as Na1Fe4Al6.

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PUM

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Abstract

The invention relates to a device for solid fuel chemical-looping hydrogen production and application, also relates to a chemical-looping hydrogen production oxygen carrier, provides a chemical-looping hydrogen production oxygen carrier, which has high reaction activity and avoids cyclic inactivation of the oxygen carrier caused by adding alkali metal K, and provides a chemical-looping hydrogen production oxygen carrier, which is prepared by adding NaAlO2 into a Fe2O3 / Al2O3 oxygen carrier and modulating through alkali metal Na. The designed CO2 trapping device comprises a gas distribution system, a steam generator, a coal high-temperature feeding hopper, a reactor, an automatic temperature control device, a cyclone separator, a condenser and a gas collecting and testing system. Fuel can befully pyrolyzed, the energy for solid fuel gasification can be reduced, the energy consumption is reduced, and the system has an industrial value.

Description

technical field [0001] The invention belongs to a solid fuel gasification method, in particular to a device and application for chemical chain hydrogen production from solid fuel, and also relates to an oxygen carrier for chemical chain hydrogen production. Background technique [0002] Capture CO using traditional gasification technology 2 and preparation of high-purity H 2 O 2 -H 2 O gasification, water gas shift, gas separation and purification steps to obtain the product gas, the process requires pure oxygen, long process, high investment cost, low hydrogen production efficiency, high production cost. [0003] Chemical chain conversion refers to the transfer of oxygen from the oxygen supply reactor to the fuel in the oxygen production reactor by means of the action of the oxygen carrier, so as to realize the isolation of the oxygen-gaining atmosphere and the oxygen-losing atmosphere, reflecting the advantages of separation; on the other hand , the oxygen carrier can ...

Claims

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Application Information

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IPC IPC(8): C01B3/06C01B3/10C01B32/50
CPCC01B3/063C01B3/105C01B32/50Y02P30/00
Inventor 马晶晶李金帅郭庆杰
Owner NINGXIA UNIVERSITY
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