Patent ID: 7676924

Claim:
A method of constructing an inner thermal lining or jacket of a jacketed gasifier which includes an outer shell or pressure vessel with an opening allowing access to an interior of the gasifier, the method including: inserting jacket wall segments into the gasifier interior through the opening, the jacket wall segments each comprising an elongate jacket plate with an annulus face and a plurality of transversely extending longitudinally spaced stiffener formations standing proud of the annulus face; arranging the jacket wall segments side by side leaving an aperture or space between adjacent jacket plates; welding the stiffener formations of adjacent spaced jacket wall segments together through the aperture or space between said adjacent spaced jacket wall segments; closing the apertures or spaces with window plates and welding longitudinally extending edges of adjacent spaced jacket plates to the intervening window plates to form part of a cylindrical jacket wall; and welding the jacket wall to top and bottom jacket end components.