Multifunctional and composite type foam-preventing recovery device for biofermentation

Abstract

The invention relates to a multifunctional composite froth suppressing and recovering device used in biological fermentation. The invention is characterized in that the device comprises a novel foam suppressor, an exhaust internal drainage gas tray, a tank gas-liquid separation recoverer, a double L pipe and a recovered gas-liquid dispersing station, wherein, the devices are supported and communicated with one another in application, comprehensively solve three-high problems generally existed in the process of biological fermentation, namely the 'high froth' which affects yield, the 'high ventilation volume' which affects environment and the 'high energy consumption' which affects efficiency. When the device is matched with a bioreactor to use in fermenting production, overflow and liquid escape of a froth layer can be effectively prevented, and liquid loading volume and tank laying yield of fermentation liquid can be improved; meanwhile, environmental pollution is prevented, and obvious effects of energy economization and emission reduction are performed.

Description

technical field [0001] The invention relates to the technical field of biological fermentation, in particular to a multi-functional compound anti-foam recovery device for biological fermentation. Background technique [0002] During the biological fermentation process, the metabolism of the nutrient-rich culture body is strong, and its feed liquid will form a large amount of foam under the influence of the shear force of the stirring blade and the entry of a large amount of sterile air, which will lead to the occurrence of tank overflow and liquid escape, especially During the foam peak period, a large number of living organisms will be sprayed out of the tank with the foam overflow tank and escape liquid, which will cause great pollution and harm to the surrounding environment. It is a breeding ground for a large number of bacteriophages, which directly threatens the normal production of biological fermentation, and even causes continuous infection and production stoppage i...

AI Technical Summary

Problems solved by technology

However, the above-mentioned processing methods will reduce the utilization rate and output of equipment, and cause waste of precious tangible resources.

[0003] The Chinese patent "foam arrestor" (application number 96230343.7) provides a production equipment that mechanically prevents foam from rising up, thereby preventing the phenomenon of "overflow". The difference in lifting speed formed when the diversion hole is formed cracks the foam wall, and after the fragments are formed, the direction is changed through the rear baffle, and the foam fragments are used to break the foam surface wall on the upper surface of the liquid surface, so as to achieve the purpose of suppressing the height of the foam layer. Due to the limitation of the thickness of the foam main board, the speed difference of diversion control is not obvious, especially for the foam formed by the fermentation product with vegetable oil as the main raw material of the fermentation medium, because of its high toughness and thick surface wall, it cannot be broken at all. However, after the diversion hole is accelerated and then decelerated, the fluid returns to its initial velocity, which cannot effectively increase the impact of the foam fragments on the liquid surface foam, so the foam resistance is limited. For most fermented products, the foam formed during the fermentation process The blocking ability is relatively weak, so this technology has not been effectively promoted; at the same time, this technology adopts the conventional straight blade stirring paddle design, and the foam blocking main board is symmetrically divided on both sides of the connecting plate according to the up and down. When the effective position of the foam is close to the working surface under the connection plate, only half of the main board is in working condition. When the liquid surface submerges the foam arrester, the upper main board and the baffle will increase the resistance of the stirring operation, which will easily cause the motor load to increase excessively or even burn out. Motor risk, adverse to safe operation

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