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Biomass pyrolysis-reforming hydrogen production method

A biomass pyrolysis and reforming hydrogen production technology, applied in the energy field, can solve the problems of low energy density, low efficiency, and increase the complexity of the hydrogen production process of biomass raw materials, so as to alleviate the impact of the environment and energy, and achieve high-efficiency production. The effect of hydrogen efficiency and cost reduction

Inactive Publication Date: 2017-01-18
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these two methods have certain limitations. Due to the low energy density of biomass raw materials, the efficiency of direct hydrogen production is very low.
However, reforming biomass pyrolysis oil to produce hydrogen requires first producing bio-oil, and then reforming bio-oil to produce hydrogen, which increases the complexity of the hydrogen production process

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Examples

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Effect test

Embodiment 1

[0041] Biomass pyrolysis-reforming hydrogen production on wheat straw, the method is as follows:

[0042] (1) Pretreat the biomass raw material. The pretreatment process is to first crush the biomass raw material into particles with a particle size of 0.5mm, then place the biomass raw material in an oven, and dry it at 80°C. Make the water content of the biomass raw material reach 6wt%;

[0043] (2) Transport the pretreated biomass raw material into the fixed-bed pyrolysis reactor at a feed rate of 5Kg / h with a screw feeder, at a temperature of 400°C, an inert carrier (nitrogen) flow rate of 0.6L / min, The pyrolysis is carried out under the condition of water vapor flow rate of 0.1L / min. The pyrolysis uses HZSM-5 catalyst, the usage amount is 50g, and the pyrolysis product enters the high-temperature cyclone separator to separate the gas phase product and the solid phase product, and the solid residue and ash Part is discharged from the bottom of the high-temperature cyclone s...

Embodiment 2

[0048] Biomass pyrolysis-reforming hydrogen production on traditional Chinese medicine dregs, the method is as follows:

[0049] (1) Pretreatment of the biomass raw material, the pretreatment process is firstly pulverizing the biomass raw material into particles with a particle size of 1.5mm, and then placing the biomass raw material in an oven and drying it at 105°C, Make the water content of the biomass raw material reach 3wt%;

[0050] (2) Transport the pretreated biomass raw material into the fluidized bed pyrolysis reactor at a feed rate of 1Kg / h with a screw feeder. , water vapor flow rate 0.2L / min, ratio of fluidized bed spout gas to fluidization gas is 5, fluidized state operating speed is 0.5m / s under the condition of pyrolysis, pyrolysis uses Co 3 o 4 Catalyst, the usage amount is 60g, the pyrolysis product enters the high-temperature cyclone separator to separate the gas-phase product and the solid-phase product, the solid residue and ash are discharged from the b...

Embodiment 3

[0055] Biomass pyrolysis-reforming hydrogen production on traditional Chinese medicine dregs, the method is as follows:

[0056] (1) Pretreat the biomass raw material. The pretreatment process is to first crush the biomass raw material into particles with a particle size of 2.0mm, then place the biomass raw material in an oven, and dry it at 95°C. Make the water content of the biomass raw material reach 4wt%;

[0057] (2) Transport the pretreated biomass raw material into the fluidized bed pyrolysis reactor at a feed rate of 2Kg / h with a screw feeder, at a temperature of 600°C and an inert carrier (nitrogen) flow rate of 0.6L / min , water vapor flow rate 0.3L / min, ratio of fluidized bed spout gas to fluidization gas is 5, fluidized state operating speed is 0.5m / s for pyrolysis, pyrolysis uses attapulgite catalyst, using Amount of 100g, the pyrolysis product enters the high temperature cyclone separator to separate the gas phase product and the solid phase product, the solid re...

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Abstract

The invention discloses a biomass pyrolysis-reforming hydrogen production method which comprises the following steps: (1) carrying out pyrolysis treatment on a biomass raw material, and leading out a gas-phase product obtained from the pyrolysis treatment; (2) directly carrying out reforming hydrogen production treatment on the gas-phase product obtained from the pyrolysis treatment; and (3) leading out the gas-phase product obtained from the reforming hydrogen production treatment, and carrying out purification treatment, to obtain a hydrogen gas product. The method allows a traditional biomass pyrolysis technology to be combined with the reforming hydrogen production process, omits processes of biological oil production and re-gasification, and directly performs reforming hydrogen production of the gas-phase product generated in the biomass raw material pyrolysis; the process reduces the treatment technology of volatile matters produced from the biomass pyrolysis, so as to reduce the biomass utilization cost input and achieve efficient hydrogen production efficiency.

Description

technical field [0001] The invention relates to the field of energy, in particular to a biomass pyrolysis-reforming hydrogen production method. Background technique [0002] With the increasingly serious environmental problems and energy problems, the role of fossil fuel resources in the future energy structure is changing day by day. Hydrogen energy, because of its high combustion calorific value, non-polluting combustion products and wide sources of hydrogen production products, is considered an ideal substitute for fossil energy by countries all over the world. [0003] Traditional hydrogen production methods mainly include electrolysis of water or steam reforming or partial oxidation of fossil fuels (natural gas, naphtha and coal). These hydrogen production methods consume a large amount of non-renewable energy and generate a large amount of greenhouse gas CO 2 , have a certain impact on environmental issues. To further alleviate environmental and energy issues, an em...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/02C01B3/22
CPCC01B3/22C01B2203/0227C10B53/02Y02E50/10
Inventor 王一双陈明强梁添杨忠连刘少敏杨婕赵阵丁珊珊
Owner ANHUI UNIV OF SCI & TECH
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