Purpose. For use in adsorption heat converters for various purposes.
Specifications. The technological process for the production of composite sorbents consists of the following stages: preparation of reagents containing 35 wt. % HCl “high purity”, 98 wt.% H2SO4 “reagent grade”, 25 wt.% NH3 “analytical grade” and 96 wt.% C2H5OH, respectively (the solvent in all cases is ethanol, the catalysts are hydrochloric acid, sulfuric acid and ammonium hydroxide); obtaining a composite sorbent by deposition of liquid silicate glass with 45 wt. sulfuric acid. parts, ultrasonic processing, drying and fractionation.
Application area. Production of other chemical products. Production of non-electrical household devices. Supply of steam, hot water and air conditioning
Advantages. The use of the developed technology for the synthesis of new composite sorbents based on crystalline hydrates and an organosilicon matrix makes it possible to obtain composites that have a longer service life (since the salt is not washed out from the silica gel pores) and their own individual structure. In addition, their desorption temperature is below 100°C, which allows the use of alternative energy sources and low-potential energy resources, which will help reduce the operating costs of adsorption heat converters.
Technical and economic effect. The use of the created technology will improve the efficiency of adsorption heat converters for various purposes due to a longer service life of the composite sorbent compared to similar materials and a lower regeneration temperature. This technology uses a low-concentration sulfuric acid solution, which makes production cheaper and environmentally friendly.
Description. The developed technology contains one production line using dispensers, a mixing reactor equipped with a heating element, a container with a rod for ultrasonic treatment, a filter and a fluidized bed dryer. Appropriate stabilizer reagents have been installed. The technology for producing composite sorbent silica gel-Na2SO4 consists of the following stages: preparation of reagents (use liquid glass with a silicate module of 3.2 and sulfuric acid H2SO4 with a concentration of 98%); obtaining a sol by precipitation of liquid silicate glass with 45 wt. sulfuric acid. parts; Ultrasound processing; drying and fractionation.