Follow-up hydrogen making engine fuel system and its device

Abstract

The invention relates to a traveling hydrogen production engine fuel system and a device thereof. The traveling hydrogen production engine fuel system consists of a hydrogen production system (1), a hydrogen gas separating and purifying device (6), a hydrogen gas buffer tank (2), an engine (3), a mixed spray burner (5) and a fuel recovery system (4); the invention is characterized in that the fuel for the engine (3) is hydrogen gas which is made by the following steps that: liquid-state hydrogenous fuel is catalyzed and transformed to generate hydrogen-rich mixed gas in a traveling hydrogen production device (c); the hydrogen-rich mixed gas is separated and purified by a separation membrane (m) to obtain the hydrogen gas. Fuel vapor which is reformed for hydrogen production utilizes regenerated water from the engine exhaust; hydrocarbon fuel uses the compact-type traveling hydrogen production device (c) of an integrated desulfuration cavity (005).

Description

Accompanied hydrogen production engine fuel system and its device Technical field The invention relates to a hydrogen-producing engine fuel system and a device thereof, which convert liquid alcohol (or hydrocarbon) fuel into a hydrogen-rich mixed gas with on-board catalytic conversion, and use the separated and purified hydrogen as engine fuel, and belong to the engine and energy technology field. Background technique With the continuous depletion of oil resources and increasing emission pressure day and night, the search for environmentally friendly alternative energy has long been concerned by countries all over the world. Hydrogen and biomass low-carbon alcohols (such as ethanol, etc.) have become recognized as ideal clean and alternative energy sources. As the direct energy source of the engine, hydrogen fuel has the outstanding advantages of high energy conversion efficiency, good power performance and very little pollution. It has become a global consensus that hy...

AI Technical Summary

Problems solved by technology

So far, it can be said that the problem of fouling and extremely short mileage of the on-board hydrogen production system of the existing known technology is one of the important reasons that hinder the rapid practical application of on-board hydrogen production technology

2. The hydrogen produced in the accompanying hydrogen production system is hydrogen-rich mixed gas. The engine fuel system using mixed gas will expose the weakness of insufficient power when the locomotive needs to run at high load, because the non-combustible components in the hydrogen-rich mixed gas are diluted If the calorific value of the fuel gas is exceeded, when the locomotive is in a high-load operating condition, it will show the phenomenon that the fuel calorific value is insufficient and the engine power will drop

3. When adding a special separation and purification hydrogen and desulfurization device to the system, the system structure is complicated and the control method is relatively complicated. Reducing or simplifying the system equipment and pipelines is very important for the limited space of the mobile locomotive and the reduction of its own weight

In particular, it should be emphasized that, first, no matter the pure hydrogen vehicle (such as CN1800617A, etc.) or the hydrogen hybrid vehicle (such as BMW’s hydrogen-gasoline hybrid vehicle, etc.) Filling with high pressure above 35-90MP or ultra-low temperature liquid hydrogen at minus 273°C, high-pressure hydrogen storage will inevitably increase the manufacturing cost of locomotives

2. The complexity of hybrid power technology and use, and the mixed use of other energy sources, whether it is due to the consideration of the transition from gasoline to pure hydrogen, or the lack of power to supplement hydrogen with other energy sources (each combustion, due to injection The power drop caused by the insufficient quality of gaseous hydrogen entering the engine cylinder) is a helpless choice. This technology increases the manufacturing cost and brings great inconvenience to the locomotive users.

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