公开(公告)号：US11858836B2

公开(公告)日：2024-01-02

申请号：US16446037

申请日：2019-06-19

Applicant: Huazhong University of Science and Technology

Inventor： Jiakuan Yang ,  Shuangyi Tao ,  Sha Liang ,  Keke Xiao ,  Wenbo Yu ,  Jingjing Qiu ,  Quan Gan ,  Ruonan Guan ,  Huijie Hou ,  Bingchuan Liu ,  Jingping Hu

IPC: C02F11/14 ,  C02F11/143 ,  C02F11/06 ,  C02F11/10

CPC classification number: C02F11/143 ,  C02F11/06 ,  C02F11/10 ,  C02F2209/02 ,  C02F2209/38 ,  C02F2305/023 ,  C02F2305/026

Abstract: The present disclosure discloses a sludge composite conditioner based on iron-containing sludge pyrolysis residue as well as a preparation method and use thereof. The sludge composite conditioner comprises iron-containing sludge pyrolysis residue and an oxidant used in combination with the iron-containing sludge pyrolysis residue, in which the iron-containing sludge pyrolysis residue is pyrolysis residue obtained by dewatering iron-containing sludge to obtain an iron-containing sludge cake and then pyrolyzing the iron-containing sludge cake, the iron-containing sludge being obtained from an advanced oxidation technology involving an iron-containing reagent. In the present disclosure, through improvements of the subsequent overall treatment process, the reuse mode and specific reaction condition parameters of the respective subsequent treatment process steps of the iron-containing sludge cake, the problem of sludge cake treatment and disposal at the end of the existing sludge treatment and disposal technology can be effectively solved compared with the prior art, and then the iron-containing sludge cake is utilized to form a composite conditioner for deep dewatering of sludge, which is recycled as a sludge conditioner for sludge treatment, thereby realizing the full utilization of resources.

公开(公告)号：US11196107B2

公开(公告)日：2021-12-07

申请号：US16446000

申请日：2019-06-19

Applicant: Huazhong University of Science and Technology

Inventor： Jiakuan Yang ,  Kang Liu ,  Sha Liang ,  Ye Chen ,  Keke Xiao ,  Junxiong Wang ,  Wenhao Yu ,  Mingyang Li ,  Huijie Hou ,  Jingping Hu ,  Bingchuan Liu

IPC: H01M10/54 ,  C01G21/06 ,  C01G21/16 ,  H01M10/06

Abstract: The disclosure discloses a method for recycling lead paste in a spent lead-acid battery, comprising: (1) pretreating lead paste in a spent lead-acid battery as a raw material under vacuum; mixing the pretreated lead paste with a chlorination reagent to obtain reactants; and heating the reactants under vacuum to carry out a chlorination volatilization reaction, so that lead element in the pretreated lead paste is combined with chlorine element in the chlorination reagent to form lead chloride, which is then volatilized, and after the reaction is completed, chlorination residue and a crude lead chloride product are obtained by condensation and crystallization after volatilization; (2) purifying the crude lead chloride product obtained in the step (1) under vacuum to obtain a refined lead chloride product. The disclosure improves the overall process flow of the recycling method as well as parameter conditions of the respective steps thereof, and can effectively solve the problem of serious pollution in lead paste recycling in the prior art.