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Method for recycling electrolyte substrate waste material of molten carbonate fuel cell

A technology of fuel cells and recycling methods, applied in the disposal/recycling of fuel cells, fuel cells, circuits, etc., can solve the problems of energy-consuming environment, pollution, waste of electrolyte substrates, etc.

Active Publication Date: 2012-01-04
HUANENG CLEAN ENERGY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the specific experimental research, especially in the assembly process of large-area and high-power molten carbonate fuel cells, due to the need to cut the prepared electrolyte substrate according to the test requirements, and the waste products generated during the substrate preparation process , so that a lot of electrolyte substrate waste will be generated
These scraps are generally sintered into LiAlO in a high temperature furnace 2 Powder reuse not only consumes energy but also causes certain pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The method for recovering the electrolyte substrate waste of molten carbonate fuel cell, the steps are as follows:

[0017] Step 1: Dry the waste electrolyte substrate in a drying oven for 6 hours to volatilize the organic solvent in the electrolyte substrate;

[0018] Step 2: Cut the waste electrolyte substrate that has volatilized the organic solvent into fragments that can be put into the ball mill jar and put them into the ball mill jar, add absolute ethanol to the ball mill jar to soak the fragments of the electrolyte substrate waste for 6 hours, and realize the waste electrolyte substrate Dissolution, the ball mill tank is required to be sealed during the dissolution process of electrolyte substrate waste;

[0019] Step 3: Prepare an organic solvent with the same composition and quality as the organic solvent volatilized in the electrolyte substrate in step 1, add the organic solvent to the dissolved electrolyte substrate waste to form an electrolyte substrate mix...

Embodiment 2

[0022] The method for recovering the electrolyte substrate waste of molten carbonate fuel cell, the steps are as follows:

[0023] Step 1: Dry the waste electrolyte substrate in a drying oven for 7 hours to volatilize the organic solvent in the electrolyte substrate;

[0024] Step 2: Cut the waste electrolyte substrate that has volatilized the organic solvent into fragments that can be put into the ball mill jar and put them into the ball mill jar, add absolute ethanol to the ball mill jar to soak the fragments of the electrolyte substrate waste for 7 hours, and realize the electrolyte substrate waste Dissolution, the ball mill tank is required to be sealed during the dissolution process of electrolyte substrate waste;

[0025] Step 3: Prepare an organic solvent with the same composition as the organic solvent volatilized in the electrolyte substrate in step 1, add the organic solvent to the dissolved electrolyte substrate waste to form an electrolyte substrate mixture, and pl...

Embodiment 3

[0028] The method for recovering the electrolyte substrate waste of molten carbonate fuel cell, the steps are as follows:

[0029] Step 1: Dry the waste electrolyte substrate in a drying oven for 9 hours to volatilize the organic solvent in the electrolyte substrate;

[0030] Step 2: Cut the waste electrolyte substrate that has volatilized the organic solvent into fragments that can be put into the ball mill jar and put them into the ball mill jar, add absolute ethanol to the ball mill jar to soak the scrap electrolyte substrate waste for 9 hours, and realize the waste electrolyte substrate Dissolution, the ball mill tank is required to be sealed during the dissolution process of electrolyte substrate waste;

[0031] Step 3: Prepare an organic solvent with the same composition and quality as the organic solvent volatilized in the electrolyte substrate in step 1, add the organic solvent to the dissolved electrolyte substrate waste to form an electrolyte substrate mixture, and p...

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PUM

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Abstract

The invention discloses a method for recycling an electrolyte substrate waste material of a molten carbonate fuel cell. The method comprises the following steps of: (1) drying the electrolyte substrate waste material in a drying oven for 5 to 10 hours, and volatilizing an organic solvent in an electrolyte substrate; (2) cutting the electrolyte substrate waste material into fragments, adding a proper amount of absolute ethanol, and soaking for 5 to 10 hours; (3) supplementing an organic solvent of which the component and the mass are the same as those of the organic solvent volatilized from the electrolyte substrate in the step (1), and performing ball milling; and (4) after the ball milling is finished, performing vacuum pumping and the like on the obtained slurry, performing curtain coating to prepare a membrane, and thus obtaining a new electrolyte substrate which can be utilized. By the method, the substrate waste material is effectively utilized, energy sources are saved, and environmental pollution is reduced.

Description

technical field [0001] The invention belongs to the technical field of molten carbonate fuel cells, in particular to a method for recycling molten carbonate fuel cell electrolyte substrate waste. Background technique [0002] Molten carbonate fuel cell is a power generation device that directly converts the chemical energy of fuel into electrical energy by electrochemical reaction without combustion. It has the advantages of high power generation efficiency, low pollutant emission, and modular arrangement. It is the future One of the power generation forms of distributed clean power plants. [0003] The basic unit of molten carbonate fuel cell is composed of cathode, electrolyte, substrate and anode. Electrolyte substrate is one of the most critical core components of MCFC, which plays the role of electronic insulation, ion conduction, gas barrier and sealing in the battery. Therefore, it is particularly important to prepare the electrolyte substrate. However, in the speci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/00H01M8/008
CPCY02E60/50
Inventor 程健许世森徐越王保民张瑞云李晨
Owner HUANENG CLEAN ENERGY RES INST
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