A PRODUCTION METHOD FOR CIVIL MIXED FUEL GAS CONSISTING OF LIGHT HYDROCARBONS MIXED WITH AIR AND COAL GAS

摘要

A production method for civil mixed fuel gas with light hydrocarbons mixed with air and coal gas, which is characterized in that the preparation method of the said civil mixed fuel gas is as follows: a. filtering liquid light hydrocarbons, and pressuring; b. heating and gasifying of the light hydrocarbons in the heating gasifier; c. mixing the gasified hydrocarbons with air or pressured air in a mixing chamber to form a mixture of light hydrocarbons and air; d. storing the mixture in a middle gas-storing tank after measured by oxygen meter; e. mixing coal gas and the mixture in a gas-mixing chamber to form mixed fuel gas; f. storing the mixed fuel gas in a gas-storing tank after measured by oxygen meter; g. transmitting and distributing the mixed fuel gas to user terminal in a low or middle and low pressure two grade form. The present invention makes use of the liquid hydrocarbons with boiling range below 80 deg. C which is mixed with air in proportional after gasified, and the mixture is further mixed with various coal gas in proportional, this invention can increase the heat value of the fuel gas and enlarge the capacity, and reduce the volume content of carbon monoxide, the mixed fuel gas reaches the national combustibility need of manual coal gas.