Reaction method by using heterogeneous catalyst and reaction apparatus therefor

A reaction method using a heterogeneous catalyst for reacting a reaction liquid, said method comprising the steps of:

• (a) supplying a reaction liquid into a reactor containing a heterogeneous catalyst particle and reacting said reaction liquid in the presence of the heterogeneous catalyst particle to produce a reaction product, and (b) passing the resultant reaction liquid product containing the heterogeneous catalyst particle through a line screen having a substantially uniform opening width that is narrower than the 15% particle diameter where said opening width allows less than 15% of said heterogeneous catalyst particles to pass substantially through said opening, and where said opening has maximal dimension and a minimal dimension and has a ratio of said maximal and minimal dimension of 1.0 to 1.5, separating said liquid reaction product from said catalyst, and then extracting the reaction liquid product separated from the heterogeneous catalyst particle from the reactor.