Synthesis of formaldehyde and liquefied high octane components

The present invention relates to the use of formaldehyde species synthetic gasoline and liquefied petroleum refinery component, comprising the steps of: (1) The liquefied petroleum gas refinery and formaldehyde according to a predetermined ratio of mass fed to a fixed bed reactor, maintained a nitrogen atmosphere under conditions of a solid acid catalyst, reaction temperature and space velocity of the reaction to an equilibrium; after cooling the reaction product (2) obtained by separation column separation, and C and C reduced olefin content of gasoline and liquefied petroleum gas the liquid-phase component; and the separated vapor is then recycled to the reaction was continued for a fixed bed reactor or directly taken out as the use of LPG, the separated liquid phase after deacidification, formaldehyde treatment and distillation to dehydration treatment , mixed gasoline components finally obtained carbon oxides. The method of the present invention not only makes full use of the components C and C olefin refinery LPG and gasoline components are mixed to obtain a carbon-oxygen compound.