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Device and method for preparing hydrogen storage carbon material by adopting biomass pyrolysis gas

A technology for pyrolysis of gas and biomass, applied in the direction of chemical instruments and methods, hydrogen, carbon compounds, etc., can solve problems such as blockage of pipelines, and achieve the effect of simple and compact device structure, excellent microstructure, saving space and materials

Active Publication Date: 2021-04-23
SOUTHEAST UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a device and method for preparing hydrogen storage carbon materials by using biomass pyrolysis gas, using biomass pyrolysis gas to prepare hydrogen storage materials, and solving the problem of hydrogen storage carbon materials while preparing hydrogen storage carbon materials Solved the problem of macromolecule coking and clogged pipelines in the traditional pyrolysis oil production process, and realized high-value cascade utilization of pyrolysis gas

Method used

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  • Device and method for preparing hydrogen storage carbon material by adopting biomass pyrolysis gas
  • Device and method for preparing hydrogen storage carbon material by adopting biomass pyrolysis gas
  • Device and method for preparing hydrogen storage carbon material by adopting biomass pyrolysis gas

Examples

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Effect test

Embodiment 1

[0052] The preparation process of using biomass pyrolysis gas to prepare hydrogen storage carbon material CABC-1 in this embodiment is as follows:

[0053] (1) take by weighing 100g dry pine molding particles and place in large-scale fixed-bed pyrolysis reactor 6, under N 2 The pine wood was pyrolyzed under the atmosphere, and the pyrolysis conditions were as follows: the heating rate was 10°C / min, the pyrolysis temperature was 550°C, the holding time was 40min, N 2 The residence time in the pyrolysis zone is 1s.

[0054] (2) The pyrolysis gas produced in step (1) leads to the template solution, the template calcium acetate quality is 25g, the solvent ethanol quality is 225g, the mixing temperature is set at 150°C, and the rotating speed is 800r / min. After all the solvent in the vessel evaporated, it was cooled to room temperature, and the carbon-containing precursor was placed in an oven and dried for 12 hours.

[0055] (3) Take by weighing 10g of the mixture obtained in st...

Embodiment 2

[0060] The preparation process of biomass pyrolysis gas to prepare hydrogen storage carbon material CBBC-1 is as follows:

[0061] (1) Carry out in the same manner as step (1) in Example 1.

[0062] (2) Carry out in the same manner as step (2) in Example 1. The difference is that the template agent is calcium carbonate, and the obtained porous carbon is marked as CBBC-1.

[0063] (3) Implement in the same manner as step (3) in Example 1.

[0064] (4) Hydrogen adsorption performance test: implement according to the same method as step (4) in Example 1. The obtained CBBC-1 adsorption capacity is 121.37cm 3 g -1 .

Embodiment 3

[0066] The preparation process of the biomass pyrolysis gas to prepare the hydrogen storage carbon material CCBC-1 is as follows:

[0067] (1) Carry out in the same manner as step (1) in Example 1.

[0068] (2) Carry out in the same manner as step (2) in Example 1. The difference is that the template agent is calcium citrate dodecahydrate, and the obtained porous carbon is marked as CCBC-1.

[0069] (3) Implement in the same manner as step (3) in Example 1.

[0070] (4) Hydrogen adsorption performance test: implement according to the same method as step (4) in Example 1. The adsorption capacity of the obtained CCBC-1 was 199.79 cm3g-1. like Figure 4 Shown is the scanning electron micrograph of the hydrogen storage carbon material CCBC-1 prepared in Example 3.

[0071] like figure 2 Shown, is the N of the hydrogen storage carbon material that embodiment one, two, three prepare 2 Adsorption-desorption isotherm diagram. N 2 The adsorption-desorption isotherm can be use...

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Abstract

The invention relates to a device and a method for preparing a hydrogen storage carbon material by adopting biomass macromolecular pyrolysis gas. Granular biomass raw materials are added into a fixed bed or a fluidized bed for pyrolysis, and the macromolecular pyrolysis gas is uniformly mixed with a template agent calcium citrate ethanol solution at a gas outlet, heated and polymerized to prepare a carbon-containing precursor; the micromolecular pyrolysis gas which does not participate in the reaction enters a condensing device to be condensed to prepare light bio-oil; high-temperature carbonization is performed on the mixture in an inert gas atmosphere to obtain a C / CaO mixture, and acid pickling, suction filtration, washing and drying are performed to obtain the mesoporous carbon material with uniform pore size. Under normal pressure, the hydrogen absorption amount of the prepared carbon material at 77K is up to 1.8 wt%. The device is reasonable in structural design, the problem that macromolecules are coked to block a pipeline in the traditional pyrolysis oil production process while the hydrogen storage carbon material is prepared is solved, and high-value gradient utilization of pyrolysis gas is achieved.

Description

technical field [0001] The invention relates to the technical field of preparation of hydrogen storage carbon materials, in particular to a device and method for preparing hydrogen storage carbon materials by using biomass pyrolysis gas. Background technique [0002] Hydrogen is generally regarded as the most ideal alternative energy because of its non-toxicity, portability, high energy density and other advantages. European countries have long been pursuing the agenda of a "hydrogen economy" with hydrogen as the main energy source. One of the main factors restricting the development of hydrogen energy is that its storage technology is still immature. Carbon material is a kind of hydrogen storage material with great potential. It utilizes physical adsorption and has high hydrogen storage capacity and good hydrogen storage performance. [0003] At present, the preparation of porous carbon has been developed to a certain extent, and the preparation methods mainly include act...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/318C01B32/336C01B3/00
CPCC01B32/318C01B32/336C01B3/0021Y02E60/32
Inventor 张会岩李萧纹李子为肖睿李晓迪
Owner SOUTHEAST UNIV
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