Device for heating methanol by using tail gas and method

Abstract

The invention relates to a device for heating methanol by using tail gas and a working method. The device comprises a tail gas inlet end connected to a tail gas pipeline and a methanol outlet end connected to an engine gas inlet pipeline, a regulating valve and a methanol mixer are arranged inside the device, tail gas enters the interior of the device from the tail gas inlet end and enters the methanol mixer through an adjusting valve, and after a mixture of methanol steam and the tail gas is formed, the mixture enters a gas inlet pipeline of an engine from the methanol outlet end, on one hand, the exhaust temperature of the engine is reduced, emission of nitric oxide is restrained, on the other hand, the temperature of methanol entering the engine is increased, the cold start effect of the methanol engine is improved, and meanwhile the combustion efficiency is improved.

Description

Technical field [0001] The present invention relates to the technical field of methanol internal combustion engine, in particular to the apparatus and method of heating methanol using exhaust gas. Background technique [0002] The statement of this section is merely the background technology information associated with the present invention, which is not necessarily constituted in prior art. [0003] Meethanol is a comparative new internal combustion engine fuel price is inexpensive, environmentally friendly, high heat efficiency, and is widely used in the field of internal combustion engine. Since the physicochemical properties of methanol are relatively special, the temperature of the stereotype is large, and the stereotyped heat is large, and it is about three times the diesel and gasoline. In the actual application environment, the gasification latent heat is highly caused by liquid methanol to absorb more heat. In order to vaporize the combustion of the engine as a fuel, the...

AI Technical Summary

Problems solved by technology

Due to the special physical and chemical properties of methanol compared with gasoline and diesel, its latent heat of vaporization is relatively large, about three times that of diesel and gasoline. In actual application environments, the high latent heat of vaporization causes liquid methanol at room temperature to absorb more heat first. It can be vaporized as fuel and injected into the engine for combustion. The incompletely vaporized methanol will be adsorbed on the intake port and cannot enter the engine cylinder, resulting in insufficient effective fuel and insufficient engine power. At the same time, the incompletely vaporized methanol enters the cylinder, and the liquid methanol contained in it It will continue to absorb heat until it vaporizes or reaches the ignition point, which will reduce the thermal efficiency of the engine during this period

[0004] In view of the special physical and chemical properties of methanol fuel, the current internal combustion engines that use methanol as fuel generally use the method of burning a part of diesel or gasoline to vaporize methanol, and when this method is used to ignite or heat methanol, the reaction stage of methanol will produce water, Condensed water can clog petrol nozzles, resulting in poor engine starting

[0005] If electric heating is used, relatively high energy is required to vaporize methanol, and the battery voltage on the car is stable. The high energy output makes the car battery output a large current, and the high current will accelerate the loss of the battery.

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