Industrial production method for removing active carbon in adipic acid solution

Abstract

The invention discloses a system for removing active carbon in adipic acid solution and an industrial production method. An active carbon treating tank is connected with a static bundling type filter by a charging pump and a charging valve, the static bundling type filter is connected with the active carbon treating tank by an emptying pipeline provided with an emptying valve and a circulating pipeline provided with a circulating pipeline valve, and the static bundling type filter is connected with a filtrate collecting device by a filtrate outlet valve and is connected with an active carbon receiving tank by a discharging valve. The active carbon-containing adipic acid solution is charged into the static bundling type filter from the active carbon treating tank through the charging pump, and is filtered, so that the solid active carbon which is very low in moisture content is transmitted to the active carbon receiving tank, and the qualified active carbon-free adipic acid solution is transmitted to a downstream work section. According to the invention, the conventional technological process is optimized, so that the leakage point can be reduced, the safety and the reliability of the system can be improved, the production capability of equipment can be greatly improved, the waste discharge of the system can be effectively reduced, and the effect of environment protection can be achieved.

Description

technical field [0001] The invention relates to a production process of adipic acid solution, in particular to a technology for removing activated carbon in the production of adipic acid solution. Background technique [0002] Adipic acid, commonly known as fatty acid, is a loose particle size, wide distribution, a little corrosive, flammable, explosive, easy to generate static electricity, and easy to soften, agglomerate or even deteriorate if the temperature is too high. The melting point is 151.9 ° C. The boiling point is 337.5°C and the flash point is 196°C. Adipic acid can undergo salt-forming reactions, esterification reactions, amidation reactions, etc., and can be polycondensed with diamines or diols to form polymers. As an organic synthesis intermediate, adipic acid is mainly used in the synthesis of nylon 66 (salt), polyurethane and plasticizers, and can also be used in the production of high-grade lubricating oil, food additives, pharmaceutical intermediates, fla...

AI Technical Summary

Problems solved by technology

[0006] For the traditional production process of activated carbon filtration in adipic acid solution, the operation process is longer and produces more wastewater. On the one hand, the longer operation process requires more investment to complete, and it also increases the leakage points in the device. It is detrimental to the security and stability of the system

The waste activated carbon with 80% water content in the traditional process is difficult to treat, and special treatment equipment needs to be set up for reprocessing. The waste water contains a small amount of nitric acid, which is easy to pollute the environment.

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