Energy-saving and environment-friendly spray drying system

Abstract

The invention discloses an energy-saving and environment-friendly spray drying system. A spray drying chamber is connected with a cyclone separator; the cyclone separator is connected with a heat exchanging chamber; the heat exchanging chamber is internally provided with a heat exchanging pipe; a condensed water tank is internally provided with a condensing pipe; one end of the heat exchanging pipe is connected with the spray drying chamber through a heater and the other end of the heat exchanging pipe is connected with one end of the condensing pipe and a solvent recycling pot; the other end of the condensing pipe is connected with the bottom of the heat exchanging chamber; the upper part of the spray drying chamber is provided with a spraying nozzle and the lower part of the spray drying chamber is connected with a second drying finished-product collecting box; and the lower part of the cyclone separator is connected with a first drying finished-product collecting box. According to the energy-saving and environment-friendly spray drying system, under the state of ideal heat insulation conditions and sealing conditions, the heat is utilized to the greatest extent and a solvent is not discharged or does not have any loss. Energy sources are greatly saved and the environment is protected; meanwhile, the solvent is recycled so that the production cost is greatly reduced; and external air is prevented from being used and secondary pollution of a product is avoided.

Description

technical field [0001] The invention relates to the fields of biochemical engineering, separation engineering and natural product extraction, and more specifically relates to an energy-saving and environment-friendly spray drying system, which is suitable for drying the purification solution of the target component in the large-scale fermentation liquid in biochemical engineering and the drying treatment of the natural product extract . Background technique [0002] At present, in the field of biochemical engineering and natural product extraction, whether the extracted liquid after separation and purification is directly boiled and dried, vacuum heating dried or spray dried, the solution is heated to promote solvent evaporation, and the solvent vapor generated by heating and heating The air is generally vented directly to the atmosphere. Since the discharged hot air and solvent vapor contain a large amount of heat energy, direct discharge causes a large amount of energ...

AI Technical Summary

Problems solved by technology

Since the discharged hot air and solvent vapor contain a large amount of heat energy, direct discharge causes a large amount of energy waste. In addition, the direct discharge of solvent vapor also causes atmospheric environmental pollution; what's more, direct use of heated air for spray drying does not meet the requirements of food and drug. Health requirements, because industrial waste gas and automobile exhaust cause serious air pollution, and harmful dust and gases such as heavy metals and sulfur dioxide in the air often exceed the standard, which will increase the content of heavy metals and sulfur in the product during the spray drying process (this is called secondary Contamination, solvent residue is the first contamination in the extraction process)

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