High-yield synthesizing method of Synthetic-Natural-Gas with higher heating level in a reactor containing Fe-based catalytic bed and Ni-based catalytic bed

摘要

The present invention is a method for producing a methane and C2-C4 paraffin-containing synthetic natural gas (SNG) of the composition exhibiting a high calorific value of 10,000 Kcal / Nm ³ ~ 13,000 Kcal / Nm ³ ; And it relates to a reactor for producing SNG used in the high calorific value SNG production method. In the reactor for producing SNG, Fischer-Tropsh (FT) synthesis reaction and methanation reaction are sequentially performed in a single reactor, and the iron-based catalyst layer for FT synthesis and the nickel-based catalyst layer for methanation reaction are stacked upstream according to the reaction sequence. Iron catalyst for FT synthesis and nickel for methanation reaction to form synthetic natural gas with high calorific value of 10,000 Kcal / Nm ³ ~ 13,000 Kcal / Nm ³ while lowering CO ₂ generation to increase SNG yield. Based on the total 100 parts by weight of the catalyst, the amount of the stacked nickel-based catalyst is characterized in that it is adjusted to 10 to 50 parts by weight.