A two-way dry distillation device, method and application for co-production of sulfur foam and desulfurization waste liquid

Abstract

This invention discloses a two-way dry distillation apparatus, method, and application for the co-production of multiple products from sulfur foam and desulfurization wastewater, belonging to the field of chemical production technology. The apparatus includes: a feed processing unit, a dry distillation and separation unit, and a product production unit; the feed processing unit includes a filter; the dry distillation and separation unit includes a two-way separation tower; the product production unit includes a refined sulfur production module, an ammonium thiocyanate production module, and a sulfuric acid production module. The method includes feed processing, dry distillation separation, and product production steps, and can flexibly select to produce refined sulfur, ammonium thiocyanate, and / or sulfuric acid according to market demand. This invention achieves efficient separation of sulfur and salt components through a two-way separation tower and flexibly switches between multiple production modes through an automatic control system, solving the problems of single product and lack of market adaptability in existing technologies. It has advantages such as low investment cost, low operating cost, high degree of automation, good environmental protection effect, and significant economic benefits.

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