Radial fixed-bed dehydration reactor

The invention relates to a radial fixed-bed dehydration reactor. The radial fixed-bed dehydration reactor comprises an inlet gas heating-up section and a radial reacting section, wherein the inlet gasheating-up section is provided with an upper closure head and a lower closure head; the radial reacting section comprises a shell body, a central gas distributing pipe and a radial reaction basket with a plurality of vent holes, a plurality of gas distributing holes are formed in the side wall of the central gas distributing pipe, an annular space between the central gas distributing pipe and theshell body is divided into a radial reaction chamber and a gas collection chamber through the radial reaction basket, and a catalyst bed layer is formed in the radial reaction chamber; a central flowdeflection cone is arranged in the central gas distributing pipe, and a tip of the central flow deflection cone corresponds to an inlet of the central gas distributing pipe; and the shell body at aninlet end of the radial reac