Shanghai Huachang Environmental Protection Co., Ltd.

Sichuan University

East China University of Science and Technology

Research Institute of Nanjing Chemical Industrial Group

Qisong Shen

Hualin Wang

Yi Liu

Ling Shen

Qiang Yang

Wei Yuan

Zhishan Bai

Yanhong Zhang

Jiangang Wang

Songbai Mao

Xin Cui

Xia Jiang

Ning Ye

Yuxiao Sun

Jianqi Chen

Jiandong Hu

Haiyang Bai

Huiqing Yu

Dun Wang

Bichuan Yu

An oily sewage pretreatment method without air flotation, comprising the following steps: (a) sedimentation separation: performing sedimentation separation on oily sewage to implement preliminary separation of oil, sludge, and water; (b) boiling bed separation: performing boiling bed separation on the oily sewage obtained by the preliminary separation to further remove dispersed oil, sludge, and sand from the oily sewage; (c) shape coalescence separation: performing shape coalescence separation on the oily sewage obtained by the boiling bed separation in step (b) to implement demulsification, coalescence, and separation of emulsified oil; and (d) biochemical treatment: the effluent obtained in step (c) directly enters an AOH biochemical system, an air flotation unit is omitted. Also disclosed is an oily sewage pretreatment apparatus without air flotation.

Oily sewage pretreatment method and device without air floatation

Provided are a method and an apparatus for micro-hydrocyclone purification for a flue gas carbon dioxide capture system. The method comprises: performing gas-liquid micro-hydrocylone separation with ultralow pressure drop on scrubbed flue gas, to remove aerosol particulates entrained in the flue gas; performing gas-liquid micro hydrocyclone separation with ultralow pressure drop on off-gas vented from the top of an absorption column, to remove entrained aerosol particulates; performing gas-liquid micro hydrocyclone separation with ultralow pressure drop on cooled regeneration gas, to remove entrained aerosol particulates; and performing liquid-solid and liquid-liquid two-stage micro-hydrocyclone separation on a mixed amine solution lean for carbon dioxide discharged from regeneration column, to remove entrained solid particulates and machine oil. The apparatus comprises: a water scrubbing column, rotation flow separators, liquid-solid micro-hydrocyclone separator sets, a water scrubbing tank, a absorption column, a regeneration column, liquid-solid micro-hydrocyclones and liquid-liquid micro-hydrocyclones.

Method and apparatus for micro-hydrocyclone purification for flue gas carbon dioxide capture system

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Shanghai, China

Qisong Shen