Alcohol combustion system for gasifying methanol based on waste heat of engine

Abstract

The invention discloses an alcohol combustion system for gasifying methanol based on waste heat of an engine. The alcohol combustion system comprises a diesel engine, a methanol supply system, a methanol gasification generator, a methanol steam injection system and a control system. The methanol supply system comprises a methanol tank, a filter and a methanol pump which are sequentially connected to the methanol gasification generator through an alcohol-resistant pipeline. The methanol gasification generator is divided into an electric heating gasification part and a waste heat gasification part, each part comprises a methanol atomizing nozzle and a one-way outlet, and gasified methanol is connected with the methanol steam injection system through the outlet. The methanol steam injection system comprises a gas-liquid separator, a gas storage tank, a pressure regulating valve, a methanol gas rail and a methanol steam nozzle which are sequentially connected through an alcohol-resistant heat preservation pipeline. The alcohol combustion system improves the concentration and temperature of mixed gas of methanol and air and improves the low-temperature starting performance of a methanol fuel engine in a manner of atomizing, gasifying and pressurizing methanol. The method has the characteristics of sufficient methanol combustion and high alcohol-diesel ratio.

Description

technical field [0001] The invention relates to the technical field of methanol fuel engines, in particular to an alcohol burning system based on engine waste heat gasification of methanol. Background technique [0002] Methanol is an excellent fuel and gasoline additive that can efficiently generate electricity in fuel cells and can also be used directly as a fuel for internal combustion engines. With the continuous development of energy-saving and emission-reduction technologies, methanol as a fuel and gasoline additive is attracting people's attention. Methanol has the characteristics of mature production technology, abundant resources, convenient use, and good emission performance and power performance. It can gradually make up for the energy gap caused by fossil energy consumption and become a renewable vehicle fuel. It is a new type with great development potential. Alternative Energy. [0003] The existing technology for burning methanol in internal combustion engin...

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Problems solved by technology

However, methanol has the characteristics of high latent heat of vaporization, low vapor pressure, low calorific value, high self-ignition temperature and not easy to evaporate, and methanol injection is greatly affected by engine temperature. Directly injecting liquid methanol into the engine cylinder will absorb a lot of heat. Reduce the temperature and concentration of the mixture, causing problems such as poor low-temperature start-up performance, incomplete combustion, and poor emission performance of methanol fueled engines. At the same time, ungasified methanol has the risk of corroding engine parts

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