Sodium borohydride alcoholysis hydrogen production device with bidirectional spraying feeding

A technology of sodium borohydride alcohol and sodium borohydride, applied in the field of sodium borohydride hydrogen production equipment, can solve the problems of increasing the difficulty of controllable hydrogen production, incomplete hydrogen production reaction, discontinuous hydrogen production, etc., and achieve accurate hydrogen production Controllable, complete response, and effective utilization

Inactive Publication Date: 2017-12-15
XUZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sodium borohydride water/alcoholysis hydrogen production is an exothermic reaction, and the large amount of heat accumulated in the continuous reaction causes the temperature of the reaction solution to rise or boil (the boiling point of methanol at normal pressure: 64.7°C, water: 100°C), which in

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  • Sodium borohydride alcoholysis hydrogen production device with bidirectional spraying feeding

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Embodiment 1

[0040] see figure 1 , the present invention discloses a sodium borohydride alcoholysis hydrogen production device with two-way spray feeding, mainly comprising a sodium borohydride liquid storage tank (sodium borohydride methanol solution liquid storage tank) 1, a flow controller 7 (11), Sprayer (atomizer) 10, catalyst reaction bed, heat exchanger, product recovery tank 13.

[0041] The sodium borohydride storage tank 1 is used to store alkaline sodium borohydride methanol solution (alkaline sodium borohydride methanol solution 2), and the sodium hydroxide solution is mixed with the sodium borohydride methanol solution to suppress the autoalcoholysis reaction. The storage device has good heat insulation from the external environment, which prevents the sodium borohydride methanol solution from producing hydrogen due to alcoholysis due to the increase in the external environment temperature, resulting in high pressure in the liquid storage tank. The liquid storage tank is equi...

Embodiment 2

[0048] figure 1 The sodium borohydride alcoholysis hydrogen production device based on two-way spray feeding is composed of sodium borohydride liquid storage tank, flow controller, upper and lower sprayers, catalyst reaction bed, heat exchanger, product recovery tank and other parts. The catalyst reaction bed is a foamed nickel-supported Ru catalyst, with a catalyst load of 2g, using a methanol solution containing 5wt.% sodium borohydride and 3wt.% sodium hydroxide as the reactant, and produces hydrogen when it reaches a steady state at 50°C The flow rate is 2.8 L / min.

Embodiment 3

[0050] figure 1 The sodium borohydride alcoholysis hydrogen production device based on two-way spray feeding is composed of sodium borohydride liquid storage tank, flow controller, upper and lower sprayers, catalyst reaction bed, heat exchanger, product recovery tank and other parts. The catalyst reaction bed is a carbon cloth supported CoB catalyst, using a methanol solution containing 5wt.% sodium borohydride and 3wt.% sodium hydroxide as the reactant, and the catalyst loading is 2g. Under the condition of 0°C, hydrogen is produced when it reaches a steady state The flow rate is 1.2 L / min.

[0051] In summary, the two-way spray feed sodium borohydride alcoholysis hydrogen production device proposed by the present invention uses a flow controller to accurately control the quality and flow rate of the reactants, improve the utilization of the reactants, and achieve accurate hydrogen production. Controllable; spraying, top-down and bottom-up, or two-way feeding methods expand ...

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Abstract

The invention discloses a sodium borohydride alcoholysis hydrogen production device with bidirectional spraying feeding. The sodium borohydride alcoholysis hydrogen production device comprises a sodium borohydride storage tank, a flow controller, an upper sprayer, a lower sprayer, a catalyst reaction bed, a heat exchanger and a product recycling tank, wherein the sodium borohydride storage tank is used for storing an alkali sodium borohydride methanol solution; the flow controller is used for adjusting the flow velocity and the flow of a reaction solution; the sprayers are arranged at the top end and the lower end of a hydrogen production reaction tank; the catalyst reaction bed comprises a catalyst and a fixed bed; the heat exchanger is used for regulating and controlling the temperature of the reaction tank; the product recycling tank is arranged at the bottom of the reaction tank; and a reaction product, namely methyl boron sodium, is collected for later use. By adopting the device, a precise controllable hydrogen production amount is achieved, influence of concentration difference gradients of reaction solutions is eliminated, an effective contact area of reactants with catalysts is increased, relatively thorough gas-liquid-solid separation is achieved, the utilization rates of reaction raw materials and catalysts are increased, and the hydrogen production cost is lowered.

Description

technical field [0001] The invention relates to a sodium borohydride hydrogen production device, in particular to a sodium borohydride alcoholysis hydrogen production device fed in a two-way spray mode, and belongs to the technical field of fuel cell-hydrogen preparation and application. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) is a new type of power generation device that directly converts chemical energy in fuel and oxidant into electrical energy. Electric vehicles, unmanned aerial vehicles, power supplies and communication base stations for mobile electronic equipment, individual combat and weapon power supplies have broad application prospects. [0003] Hydrogen is an ideal fuel for fuel cell power systems. The widespread application of hydrogen fuel cell power requires not only a large number of highly active and stable catalysts, but also numerous hydrogen refueling stations and hydrogen storage facilities. However, hydrogen is a small ...

Claims

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Application Information

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IPC IPC(8): C01B3/06
CPCY02E60/36C01B3/06
Inventor 赵新生魏永生徐金富聂新明田亚平
Owner XUZHOU NORMAL UNIVERSITY
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