Methanol-water mixed solution generation system and method for methanol reforming fuel cell

Abstract

The invention discloses a methanol-water mixed solution generation system and method for a methanol reforming fuel cell, and the system comprises a methanol box, a gas-liquid separator, and a mixing container. The methanol tank and the gas-liquid separator are connected to the mixing container, and the methanol box is used for storing methanol fuel and conveying the methanol fuel to the mixing container; the gas-liquid separator is used for converting water vapor contained in input exhaust gas into liquid water and conveying the liquid water to the mixing container; the mixing container is used for mixing input methanol fuel and liquid water according to a preset proportion to generate a methanol-water mixed solution. According to the embodiment of the invention, the methanol-water mixed liquid is generated in real time, the volume utilization rate of the fuel tank is improved, the electric energy supply amount is increased, and the proportion of the methanol-water mixed liquid can beadjusted as required.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of automatic control, and in particular to a methanol-water mixture generation system and method for a methanol reforming fuel cell. Background technique [0002] The basic working principle of methanol reforming hydrogen fuel cell vehicles is similar to that of pure hydrogen fuel cell vehicles, except that the hydrogen storage tank is replaced by a methanol reformer. In the reformer, the mixture of methanol and water is converted into hydrogen-rich reformed gas, and the reformed gas enters the high-temperature proton membrane stack for power generation and supplies electric energy to the outside (ie, automobiles). The schematic diagram of the existing methanol reforming fuel cell is as follows: figure 1 As shown, the fuel used is a mixture of methanol and water, wherein the volume of methanol and water is generally methanol: water = 6:4 or 5:5, the reaction equation is as follows,...

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Problems solved by technology

[0003] The following problems exist in the reaction process of the existing methanol reforming fuel cell. First, the fuel in the fuel tank exists in the form of a mixture of methanol and water, and only 50% to 60% of methanol is the energy source, which greatly restricts the use of fuel vehicles. driven distance

Secondly, it is impossible to directly use the real-time mixing of water and methanol in fuel vehicles to obtain a methanol-water mixture, because when the ambient temperature is lower than 0°C, the water will freeze, making it unusable

Finally, because the ratio of methanol-water mixture needs to correspond to the reformer, and the reformers of different manufacturers correspond to different ratios of methanol-water mixture, it is difficult for the methanol station to provide methanol-water mixture in various proportions. , the refueling of methanol reforming fuel cell vehicles is limited

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