The invention relates to a waste heat recoverer for sulfonation. The waste heat recoverer has the advantages of being simple in structure, long in service life, high in safety and convenient to maintain, and waste heat can be more reasonably utilized. According to the technical scheme, the waste heat recoverer for sulfonation comprises a gas sleeve used for enabling high-temperature gas to be fed in, and is characterized by further comprising an inner water pipe used for enabling cooling water to be fed in to generate steam and an outer water sleeve, wherein both the outer water sleeve and the gas sleeve are manufactured by thin-wall shells, and the cross sections of the outer water sleeve and the gas sleeve are annular sealing cavities; the gas sleeve wraps the surface of the outer circumference of the inner water pipe, and the outer water sleeve wraps the surface of the outer circumference of the gas sleeve; a gas inlet and a gas outlet are formed in the upper end and the lower end of the gas sleeve respectively; a steam delivery output and a water inlet are formed in the upper end and the lower end of the inner water pipe respectively; a steam outlet and a cold water inlet are formed in the upper end and the lower end of the outer water sleeve respectively.