Reaction kettle and reaction kettle mounting method

The invention relates to a reaction kettle, which comprises a kettle body and three supporting legs, wherein each supporting leg comprises a bottom layer steel plate, a cement leveling layer, a leveling steel plate, a height adjusting steel plate, a supporting steel plate and a supporting steel column which are sequentially distributed from bottom to top; the center line of the kettle body is in avertical state; a plurality of supporting blind holes are formed in the leveling steel plate; the bottom surfaces of all the supporting blind holes are positioned on the same horizontal plane; a plurality of height adjusting screws which are arranged in the supporting blind holes in a one-to-one correspondence and penetrating manner are in threaded connection with the height adjusting steel plate; and the height adjusting steel plate and the leveling steel plate are fixed together, the supporting steel plate and the height adjusting steel plate are fixedly connected together, the supporting steel column and the suppo