Steam stripping system and stripping method

Abstract

The invention provides a steam stripping system and a stripping method. The steam stripping system comprises an energy recovery device, a gas-liquid separation device, a steam stripping device and a pump body, wherein the energy recovery device comprises an energy recovery device inlet and an energy recovery device outlet and is used for recovering the static-pressure energy of to-be-processed liquid input through the energy recovery device inlet; the gas-liquid separation device comprises a gas-liquid separation device liquid inlet, a gas-liquid separation device liquid outlet and a gas-liquid separation device gas outlet, and the gas-liquid separation device liquid inlet is connected with the energy recovery device outlet; the steam stripping device is connected with the gas-liquid separation device liquid outlet; the pump body pressurizes liquid discharged out of the steam stripping device and subjected to steam stripping, and then the liquid is output. As the energy recovery device is arranged to recover the static-pressure energy of the to-be-processed liquid, the static-pressure energy of the liquid cannot be wasted during steam stripping, and accordingly, the purpose of making the best of energy is achieved.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a stripping system and a stripping method. Background technique [0002] The shift condensate stripping system in the prior art uses steam to strip the ammonia in the ammonia washing water and the low-temperature condensate, so as to achieve the purpose of recovering the condensate and ammonia. In the shift condensate stripping system, the ammonia washing water and the low-temperature condensate have high pressure and have high static pressure energy, but this part of energy has not been effectively utilized in the current shift condensate stripping system. [0003] At the same time, because carbon dioxide has a strong corrosion ability under the conditions of high temperature and high water vapor in the shift condensate stripping system in the prior art, the top of the stripping tower is easily corroded. [0004] Disadvantages of the existing technology: the static pr...

AI Technical Summary

Problems solved by technology

In the shift condensate stripping system, the pressure of washing ammonia water and low-temperature condensate is very high, and has high static pressure energy, but this part of energy has not been effectively utilized in the current shift condensate stripping system

[0003] At the same time, due to the strong corrosion ability of carbon dioxide in the shift condensate stripping system in the prior art under the conditions of high temperature and high water vapor, the top of the stripping tower is easily corroded

[0004] Disadvantages of the existing technology: the static pressure energy of the converted condensate in the existing converted condensate stripping system is not recovered, and the energy is relatively wasteful. At the same time, the motor drives the pump to send the stripped water, the power consumption is relatively large, and the operating cost is relatively high. high

And facing the problem of carbon dioxide corrosion

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