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Method for producing hydrogen by biogas liquid aqueous-phase reforming

A water-phase reforming and hydrogen technology, applied in hydrogen/synthesis gas production, chemical instruments and methods, hydrogen, etc., can solve the problems of high production cost, high process conditions, complex operation, etc., and achieve value enhancement and convenient operation , the effect of simple equipment

Inactive Publication Date: 2020-01-03
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2017, the amount of biogas produced by anaerobic fermentation of agricultural waste in my country reached 1.58×10 10 m 3 , but the output of the corresponding by-product biogas slurry and residue is huge
However, in this method, the steam reforming hydrogen production technology first vaporizes the biogas slurry at high temperature and normal pressure (500-700°C) and then reforms it to produce hydrogen, and it is accompanied by side reactions that are prone to occur at high temperatures
This method requires high process conditions, and the operation is relatively complicated. The reaction product contains a small amount of harmful gas, and the production cost is high, so it is difficult to apply in industrial production.

Method used

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  • Method for producing hydrogen by biogas liquid aqueous-phase reforming
  • Method for producing hydrogen by biogas liquid aqueous-phase reforming

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Prepare Ni / Al with Ni loading of 15wt% by equal volume impregnation method 2 o 3 Catalyst, reduced under hydrogen atmosphere to obtain black powdery catalyst;

[0056] (2) Put 0.2g catalyst and 100mL biogas slurry in the reactor, seal the reactor, ventilate nitrogen to discharge the air, adjust the pressure to 2.5MPa, raise the temperature to 250°C, stir at 250r / min, and react for 3h;

[0057] (3) Heating and stirring were stopped, and the reactor was placed in an ice bath to cool to room temperature. The noncondensable gas obtained from the gas outlet was a gas phase product containing hydrogen. The components and contents of the detected gas products were shown in Table 1.

Embodiment 2

[0059] (1) Prepare Ni / CeO with a Ni loading of 15wt% by equal volume impregnation method 2 Catalyst, reduced under hydrogen atmosphere to obtain black powdery catalyst;

[0060] (2) Put 0.2g catalyst and 100mL biogas slurry in the reactor, seal the reactor, ventilate nitrogen to discharge the air, adjust the pressure to 2.5MPa, raise the temperature to 250°C, stir at 250r / min, and react for 3h;

[0061] (3) Heating and stirring were stopped, and the reactor was placed in an ice bath to cool to room temperature. The noncondensable gas obtained from the gas outlet was a gas phase product containing hydrogen. The components and contents of the detected gas products were shown in Table 1.

Embodiment 3

[0063] (1) Prepare Ni / Al with Ni loading of 15wt% by equal volume impregnation method 2 o 3 Catalyst, reduced under hydrogen atmosphere to obtain black powdery catalyst;

[0064] (2) Put 0.5g of catalyst and 100mL of biogas slurry in the reactor, seal the reactor, ventilate nitrogen to discharge the air, adjust the pressure to 2.5MPa, raise the temperature to 200°C, stir at 250r / min, and react for 3h;

[0065] (3) Heating and stirring were stopped, and the reactor was placed in an ice bath to cool to room temperature. The noncondensable gas obtained from the gas outlet was a gas phase product containing hydrogen. The components and contents of the detected gas products were shown in Table 1.

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Abstract

The invention relates to a method for producing hydrogen by biogas liquid aqueous-phase reforming. The method comprises the following steps: adding a catalyst to a biogas liquid, then carrying out a reaction under pressurized conditions, and then performing cooling and collecting the gas. The method provides a new way for treatment and utilization of the biogas liquid, the technology for producinghydrogen by aqueous-phase reforming omits a vaporization step of raw materials, and directly produce hydrogen by a one-step reaction under relatively mild reaction conditions, at the same time, the side effects that are easy to occur under high temperature conditions are minimized, and the biogas liquid is used to produce hydrogen by the aqueous-phase reforming technology. The operation is convenient and the equipment is simple, and the produced hydrogen can be used for heating supply or power generation on site.

Description

technical field [0001] The present invention relates to the field of resource utilization of by-products in the process of energy utilization and the field of environment, and more specifically relates to a method and application of biogas slurry water phase reforming to produce hydrogen. Background technique [0002] With the rapid development of my country's agriculture, the annual output of agricultural waste is increasing day by day, and the annual output of livestock and poultry manure alone has exceeded 3.8 billion tons. However, its comprehensive utilization rate is less than 60%, and the random stacking phenomenon is rampant, causing serious environmental pollution. Anaerobic fermentation technology is an important means to deal with agricultural waste, which can convert agricultural waste into biogas for resource utilization. In 2017, the amount of biogas produced by anaerobic fermentation of agricultural waste in my country reached 1.58×10 10 m 3 , but the outpu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/32
CPCC01B3/326C01B2203/1058C01B2203/1082
Inventor 颜蓓蓓毛雨柔李婉晴陈冠益陶俊宇
Owner TIANJIN UNIV