Metal hydride reactor gradiently filled with expanded graphite

A technology of expanded graphite and gradient filling, applied in chemical/physical processes, chemical instruments and methods, etc., can solve the problems of decreased hydrogen storage density and volumetric heat storage density, and achieve increased heat storage efficiency and hydrogen absorption reaction rate , is conducive to the effect of uniform distribution

Active Publication Date: 2018-12-14
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its disadvantage is that with the increase of the expansion graphite filling, since the expansion graphite does not participate in the hydrogen absorption reaction, the hydrogen storage density per unit volume of the reaction bed will decrease, and the volume heat storage density will also decrease accordingly.
For example: in the patent of Chinese patent application number CN201610606744.7, a metal hydride reactor is disclosed, including "multi-layer reaction bed, each layer of the reaction bed has an upper and lower Two-layer structure, wherein the lower layer is a composite material layer, the composite material layer contains a hydrogen storage alloy and / or a metal hydride, the hydrogen storage alloy reacts with hydrogen to form a metal hydride and releases heat, or the metal hydride absorbs The heat reaction generates the hydrogen storage alloy and the hydrogen gas", the filling amount of the filler increases, because the filler does not participate in the reaction, the hydrogen storage density per unit volume of the reaction bed will decrease

Method used

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  • Metal hydride reactor gradiently filled with expanded graphite
  • Metal hydride reactor gradiently filled with expanded graphite
  • Metal hydride reactor gradiently filled with expanded graphite

Examples

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Effect test

Embodiment 1

[0029] Such as figure 1 , figure 2 with Figure 7 As shown, a metal hydride reactor filled with expanded graphite gradiently includes a shell, a reaction bed, a hydrogen gas inlet and outlet pipe, and a heat exchange tube. The reaction bed is arranged inside the shell to form a reaction chamber, and the hydrogen gas enters The outlet pipe is arranged on the outer surface of the shell, and the heat exchange tube passes through the center of the reaction bed, which is made of composite materials mixed and pressed by multi-layer metal hydride and expanded graphite. The mass content of each layer of expanded graphite gradually decreases from the inside to the outside. The shell 1 is a cylindrical shell with an inner diameter of 104 mm and an inner volume of 4.25 L. The inner diameter of the heat exchange tube 4 is 8 mm. The material of the shell 1 and the heat exchange tube 4 is For 316L stainless steel, the mass content of expanded graphite varies according to the direction gr...

Embodiment 2

[0032] Such as Figure 1 to Figure 4 , Figure 7 As shown, a metal hydride reactor filled with expanded graphite gradiently includes a shell, a reaction bed, a hydrogen gas inlet and outlet pipe, and a heat exchange tube. The reaction bed is arranged inside the shell to form a reaction chamber, and the hydrogen gas enters The outlet pipe is arranged on the outer surface of the shell, and the heat exchange tube passes through the center of the reaction bed, which is made of composite materials mixed and pressed by multi-layer metal hydride and expanded graphite. The mass content of expanded graphite in each layer decreases gradually from the inside to the outside. Shell 1 is a cylindrical shell with an inner diameter of 104mm and an inner volume of 4.25L. The inner diameter of heat exchange tube 4 is 8mm. The material of shell 1 and heat exchange tube 4 is 316L stainless steel. The heat exchange fluid in heat exchange tube 3 is heat transfer oil. Dowtherrm A, the inlet veloci...

Embodiment 3

[0036] Such as figure 1 , figure 2 , Figure 5 to Figure 7As shown, a metal hydride reactor filled with expanded graphite gradiently includes a shell, a reaction bed, a hydrogen gas inlet and outlet pipe, and a heat exchange tube. The reaction bed is arranged inside the shell to form a reaction chamber, and the hydrogen gas enters The outlet pipe is arranged on the outer surface of the shell, and the heat exchange tube passes through the center of the reaction bed, which is made of composite materials mixed and pressed by multi-layer metal hydride and expanded graphite. The mass content of expanded graphite in each layer decreases gradually from the inside to the outside. Shell 1 is a cylindrical shell with an inner diameter of 104mm and an inner volume of 4.25L. The inner diameter of heat exchange tube 4 is 8mm. The material of shell 1 and heat exchange tube 4 is 316L stainless steel. The heat exchange fluid in heat exchange tube 3 is heat transfer oil. Dowtherrm A, the i...

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Abstract

The invention discloses a metal hydride reactor gradiently filled with expanded graphite. The metal hydride reactor comprises a shell, a reaction bed, a hydrogen inlet and outlet pipe and a heat exchange pipe, wherein the reaction bed is of a multi-layer structure; the interior of each layer of the reaction bed is filled with expanded graphite; and the mass contents of the expanded graphite filling in all layers of the reaction bed are gradiently increased. The metal hydride reactor provided by the invention can reduce the usage amount of a highly-conductive material, namely, the expanded graphite, enables the heat storage density per unit volume of the layers of the reaction bed to be increased, and can improve the rate of a hydrogen absorption reaction compared with a metal hydride reactor with equal addition amount of the expanded graphite.

Description

technical field [0001] The invention belongs to the technical field of fixed bed reactors, in particular to a metal hydride reactor filled with expanded graphite in gradient. Background technique [0002] With the development of economy and society, the energy problem has become one of the main bottlenecks restricting social development. Facing the pressure of resource depletion, sustainable new energy such as solar energy and waste heat recovery have gradually become a research hotspot. However, solar energy and non-continuously produced industrial waste heat all have the problem that energy cannot be continuously supplied. Therefore, the implementation of efficient thermal storage technology is a necessary means to solve the above-mentioned mismatch between energy supply and demand in terms of time and space. [0003] Heat storage technologies include sensible heat, phase change latent heat and thermochemical heat storage technologies. Among them, the heat storage techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/02
CPCB01J8/02
Inventor 鲍泽威闫栋黄卫星
Owner SICHUAN UNIV
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