High-efficiency environment-friendly energy-saving mixed fuel gas

Abstract

The invention provides a high-efficiency environment-friendly energy-saving mixed fuel gas. The fuel gas is prepared by mixing the following substances by weight: 70 to 80 parts of liquefied petroleum gas, 15 to 20 parts of dimethyl ether, 1 to 5 parts of methanol and 5 to 10 parts of ethanol. Liquefied petroleum gas mainly contains propane and includes many substances, so a certain amount of ethanol should be added as a solvent to realize solvation and azeotropy; ethanol contains oxygen, has good combustibility and is a solvent, and a certain amount of methanol is added to supplement oxygen; thus, oxygen content in liquefied petroleum gas is increased, which is beneficial for combustion. Emission during combustion is reduced by 40%; thermal efficiency is increased by more than 20%; the volume of methanol and dimethyl ether is 3%; complex substances in liquefied petroleum gas are fused by ethanol into dimethyl ether and methanol, then an obtained mixture is dissolved in liquefied petroleum gas, no deposition and layering occur, and no corrosion is posed.

Description

technical field [0001] The invention belongs to a gas, in particular to a mixed gas with liquefied petroleum gas as the main component. Background technique [0002] The calorific value of liquefied petroleum gas is the highest among gaseous fuels, and the theoretical air volume is as high as 24~30Nm 3 / Nm 3 , so combustion air is more difficult to mix with than natural gas. Some units use air or flue gas to dilute the liquefied petroleum gas before use. However, it is very dangerous to use air to dilute, and the ratio is not allowed within the explosion range, otherwise an explosion will occur. The national regulations usually stipulate that the volume concentration of liquefied petroleum gas must be 1.5 times higher than the upper limit of the explosion range. LPG has a low flame spread and burns slowly, but slightly faster than natural gas. [0003] Although liquefied petroleum gas has a high calorific value, it is unreasonable to mix with air, that is, the "air-fuel ...

AI Technical Summary

Problems solved by technology

In summary, although the calorific value of liquefied petroleum gas is high, the ideal "air-fuel ratio" cannot be achieved due to the limitation of thermal efficiency of some combustion appliances.

[0004] However, it should be noted that many companies and even gas stations across the country add a large amount of dimethyl ether. Due to the low price of dimethyl ether, it is very wrong to add a large amount of dimethyl ether, and the serious consequences will be unimaginable.

DME gas and liquefied petroleum gas medium are very different, so its special stoves are also different. If the proportion of dimethyl ether added exceeds 20%, the liquefied petroleum gas water heater will not ignite, and the flame of the liquefied petroleum gas stove will be abnormal. It produces an unpleasant smell. Most of DME is made by dehydration of methanol. If the "air-fuel ratio" of DME is unreasonable, formaldehyde will be generated during combustion. Formaldehyde is a drug carcinogen that greatly harms users. Liquefied petroleum gas cylinder valves are mostly made of nitrile rubber, and its chemical polarity is similar to that of dimethyl ether, so it will cause mutual dissolution, damage the sealing ring, cause leakage, and cause fire or explosion. is fatal