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Hydrogen-ammonia dual-fuel engine system for supplying hydrogen by utilizing waste heat of waste gas to catalyze and reform methanol

A dual-fuel engine, catalytic reforming technology, applied to combustion engines, internal combustion piston engines, charging systems, etc., can solve problems such as low combustion speed, high ignition point of ammonia, incomplete combustion, etc., to improve combustion conditions and reduce heat Discharge and thermal efficiency improvement effect

Active Publication Date: 2021-09-28
DALIAN UNIV OF TECH
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Problems solved by technology

[0003] However, ammonia also has a high ignition point and a low combustion velocity, and there is a problem of incomplete combustion in internal combustion engines, especially at low speed and low load

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  • Hydrogen-ammonia dual-fuel engine system for supplying hydrogen by utilizing waste heat of waste gas to catalyze and reform methanol
  • Hydrogen-ammonia dual-fuel engine system for supplying hydrogen by utilizing waste heat of waste gas to catalyze and reform methanol

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Embodiment Construction

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

[0023] It should be noted that in the description of the present invention, the terms "upper", "lower", "top", "bottom", "side", "other side", "left", "right" etc. indicate The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplification of the description, and does not mean that devices or elements must have a specific orientation, be constructed and operated in a s...

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Abstract

The invention relates to a hydrogen-ammonia dual-fuel engine system for supplying hydrogen by utilizing waste heat of waste gas to catalyze and reform methanol. The system comprises a methanol aqueous solution tank, a methanol pump, a methanol flowmeter, a catalytic reformer, a condenser, a filter, a pneumatic booster pump, a hydrogen flowmeter, a hydrogen pressure sensor, a flame retardant device, a hydrogen rail, a hydrogen nozzle, an ammonia fuel engine, an electronic control unit (ECU) and a waste gas driving and discharging mechanism. According to the system, methanol is used as a hydrogen energy carrier to realize convenient storage and transportation, and the waste gas waste heat of the engine is utilized to catalyze and reform methanol to produce hydrogen to realize hydrogen supply; real-time, quantitative and constant-pressure online hydrogen supply is provided according to the specific working condition of the engine, and an extra excessive hydrogen storage device is not needed; the injection pressure and the injection amount of hydrogen are adjusted according to the specific working conditions of the ammonia fuel engine, combustion of the engine under various working conditions is effectively improved, and NOx emission is reduced; and carbon-free alternative energy combustion modes and supply modes of the internal combustion engine are enriched, and the direction and strategic deployment of energy transformation are increased.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to a hydrogen-ammonia dual-fuel engine system which utilizes waste gas waste heat to catalytically reform methanol to supply hydrogen. Background technique [0002] In recent years, the energy crisis and environmental pollution caused by the huge consumption of fossil energy have forced people to seek new clean alternative energy. Due to the carbon-free nature of hydrogen and ammonia, complete combustion will not form any pollutants related to carbon, such as CO, CO 2 And soot, etc., have gradually attracted people's attention. Among them, hydrogen has been considered as the most promising fuel for internal combustion engines due to its wide combustion limit, high calorific value per unit mass, and diffusion velocity. However, the low density of hydrogen requires special high-pressure or ultra-low temperature containers for storage. At the same time, the low ig...

Claims

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Application Information

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IPC IPC(8): F02M27/02F02M21/02F02D19/06F02D41/00
CPCF02M27/02F02M21/0218F02M21/023F02M21/0248F02M21/0245F02M21/0239F02D19/0644F02D41/0025F02D41/0027Y02T10/30
Inventor 冯立岩卢耀夏雨曲文静王自鑫张东方源宋湄葭
Owner DALIAN UNIV OF TECH
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