Thermal management system of large-scale hydrogen production equipment

Abstract

The invention belongs to the technical field of chemical hydrogen production, and particularly discloses a thermal management system of large-scale hydrogen production equipment. The system comprisesa water tank, wherein a heat exchange tube is arranged at the bottom in the water tank, one end of the heat exchange tube communicates with an outlet of a waste liquid device, the other end of the heat exchange tube communicates with an inlet of a water collector, an inlet of the waste liquid device is connected with a reactor, and an outlet of the water collector is connected with a dryer; a circulating water pump and a radiator are further arranged outside the water tank, and the circulating water pump is used for pumping water in the water tank into the radiator for heat dissipation and returning the water to the water tank; and the heat exchange tube is a multi-pass U-shaped tube, a coil tube or a plurality of heat exchange calandria tubes. According to the system, heat generated by hydrogen production is used for supplying heat to low-temperature water, the heat exchange effect is good, power consumption is effectively saved, and liquid water supply required by a chemical hydrogenproduction reaction in a field low-temperature environment below 0 DEG C can be maintained; the long-term stability of the heat exchange effect can be ensured; and the regional water temperature difference can be reduced, and the influence on the hydrogen production reaction is avoided.

Description

technical field [0001] The invention belongs to the technical field of chemical hydrogen production, and in particular relates to a thermal management system of large-scale hydrogen production equipment. Background technique [0002] A fuel cell is a chemical device that directly converts the chemical energy of fuel into electrical energy, also known as an electrochemical generator. It is not limited by the Carnot cycle, so it has high energy conversion efficiency, no noise, no pollution, and has great Good development prospects. As an output source of energy conversion, a fuel cell needs a hydrogen supply system to provide a stable and reliable supply of hydrogen for its power generation. [0003] At present, in view of the difficulty of using hydrogen in the field of fuel cells, there are mainly the following emergency hydrogen supply schemes: hydrogen storage in hydrogen bottles, hydrogen storage in hydrogen storage materials, hydrogen production by methanol reforming an...

AI Technical Summary

Problems solved by technology

Among them, the safety of hydrogen storage in hydrogen bottles is poor, and it is difficult to replenish; the mass density of hydrogen storage materials for hydrogen storage is low, and it is difficult to carry; It is safe and convenient, and has high hydrogen storage density, high purity of hydrogen production, and clean and recyclable products. Therefore, it is considered to be a safe, efficient and practical hydrogen production and storage technology, and it is also the most widely used.

In chemical hydrogen production, including hydrogen production from metal water, hydrogen production from ferrosilicon powder, hydrogen production from borohydride, etc., water is required in the reaction process, but the preservation of water at a low temperature below 0°C is a difficult problem. The traditional method is to rely on the heating system to Continuous heating with low-temperature water, high power consumption and high cost of hydrogen production

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