公开(公告)号：US20240359044A1

公开(公告)日：2024-10-31

申请号：US18630261

申请日：2024-04-09

Applicant: Nanjing Institute of Environmental Sciences, MEE

Inventor： Houhu ZHANG ,  Bing MA ,  Hao ZHOU ,  Xiaofei YAN ,  Guodong KANG ,  Yi WANG

IPC: A62D3/40 ,  A62D101/28 ,  B09B3/35 ,  B09B3/40 ,  B09B101/30

CPC classification number: A62D3/40 ,  B09B3/35 ,  B09B3/40 ,  A62D2101/28 ,  B09B2101/30

Abstract: A processing apparatus for removing dioxin in fly ash from domestic waste incineration by using a ball mill includes a grinder as well as a feeding body and a discharging body that are separately arranged at both ends of the grinder. In the present disclosure, an induction coil is electrified by arranging a heating body to generate an alternating magnetic field such that eddies generate on an inner wall of a grinding cylinder in the induction coil, the grinding cylinder is heated by the energy of these eddies, making a grinding ball thermally desorb and decompose a harmful component, that is, dioxin in the fly ash through a high temperature when grinding the fly ash from the domestic waste incineration since a temperature in the grinding cylinder reaches 300-500° C. during grinding.

公开(公告)号：US11919811B1

公开(公告)日：2024-03-05

申请号：US18138763

申请日：2023-04-25

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Baomin Wang ,  Chengcheng Fan ,  Xiao Han ,  Tianru Li ,  Yunqing Xing ,  Xiong Zhang ,  Sai An ,  Ze Yu ,  Wanli Wang

IPC: B09B3/21 ,  B09B101/30 ,  C04B18/10 ,  C04B18/24 ,  C04B22/06 ,  C04B28/02 ,  C04B40/00 ,  C04B103/10 ,  C04B111/00

CPC classification number: C04B28/021 ,  B09B3/21 ,  C04B18/101 ,  C04B18/248 ,  C04B22/062 ,  C04B40/0046 ,  C04B40/0067 ,  B09B2101/30 ,  C04B2103/10 ,  C04B2111/00767

Abstract: A curing agent for disposal of municipal solid waste incineration (MSWI) fly ash and a preparation method and use method thereof are provided. In the present disclosure, a loofah nanofiber crystal, a rice husk ash (RHA), sodium hydroxide, and water are adopted as raw materials to prepare the curing agent, and the curing agent can effectively realize the safe disposal and curing of heavy metals in an MSWI fly ash. The highest curing rates of the curing agent for heavy metals Pb2+, Zn2+, Cd2+, Cr3+, and Cu2+ can reach 99.7%, 99.4%, 99.5%, 98.7%, and 99.5%, respectively. The special three-dimensional (3D) cross-linked network structure of the loofah nanofiber crystal and the excellent physical and chemical adsorption properties and ion exchange capacity of the RHA are fully used in the curing agent of the present disclosure.

公开(公告)号：US20240009716A1

公开(公告)日：2024-01-11

申请号：US18471926

申请日：2023-09-21

Applicant: Hung Van PHAM

Inventor： Hung Van PHAM

IPC: B09B3/25 ,  C04B32/00

CPC classification number: B09B3/25 ,  C04B32/00 ,  B09B2101/30

Abstract: The present disclosure provides efficient and cost-effective methods for producing synthetic soil and synthetic stone from waste, including inorganic waste and organic waste, through a hydrolysis—polycondensation process.

公开(公告)号：US20230330724A1

公开(公告)日：2023-10-19

申请号：US18017114

申请日：2021-07-21

Applicant: Massachusetts Institute of Technology ,  Carnegie Mellon University

Inventor： Yet-Ming Chiang ,  Leah Ellis ,  Sophie C. Coppieters 't Wallant ,  Sonia Zhang ,  Venkatasubramanian Viswanathan ,  Elsa A. Olivetti ,  Michael Joseph Wang

IPC: B09B3/70 ,  C25D17/12 ,  C25D3/46 ,  C25D3/48 ,  C25D3/50 ,  C25D5/48

CPC classification number: B09B3/70 ,  C25D17/12 ,  C25D3/46 ,  C25D3/48 ,  C25D3/50 ,  C25D5/48 ,  B09B2101/30

Abstract: Disclosed herein are systems and methods for processing ash. For example, in certain embodiments, the method comprises dissolving at least a portion of ash in acid. In some embodiments, the acid is produced in a reactor. In some embodiments, dissolving at least a portion of ash in acid produces refined silica (SiO2) (e.g., amorphous silica, substantially pure silica, and/or a substantial amount of silica). According to certain embodiments, the ash can be further processed (e.g., using electro winning, pH-based precipitation, and/or electrorefining) to obtain other components instead of or in addition to refined silica.

公开(公告)号：US11680018B2

公开(公告)日：2023-06-20

申请号：US16607617

申请日：2018-04-20

Applicant: BAUER Spezialtiefbau GmbH

Inventor： Hursit Ibuk

IPC: C04B28/02 ,  B09B1/00 ,  E02D5/18 ,  C04B111/00 ,  B09B101/30

CPC classification number: C04B28/021 ,  B09B1/004 ,  B09B1/008 ,  E02D5/18 ,  B09B2101/30 ,  C04B2111/00293 ,  C04B2111/00775

Abstract: The invention relates to a sealing wall building material, which has a binding agent with cement and aggregates. It is provided according to the invention that the binding agent comprises a mixture of cement and fly ash, wherein it is free of clay material, and that it has an impermeability with a kf value of 10−7 m/s and less.

公开(公告)号：US20240261835A1

公开(公告)日：2024-08-08

申请号：US18518418

申请日：2023-11-22

Applicant: Zhejiang University

Inventor： Xiaoqing Lin ,  Jie Chen ,  Hong Yu ,  Xiaodong Li ,  Jianhua Yan

IPC: B09B3/70 ,  B09B3/35 ,  B09B3/40

CPC classification number: B09B3/70 ,  B09B3/35 ,  B09B3/40 ,  B09B2101/30

Abstract: A method for efficient disposal of dioxin and heavy metals based on calcium-based heat storage of MSWI fly ash is provided. According to the method, MSWI fly ash washed with water is treated with ammonia, and carbon dioxide is continuously introduced under stirring. The ammonia provides OH− for a carbonation reaction of the MSWI fly ash and promotes removal of sulfate ions. After centrifugation of a reaction solution, calcium carbonate obtained as a solid part is transported to a calcinator of a solar chemical heat reservoir and calcined into calcium oxide by means of solar energy obtained by a solar concentrator. CO2 produced in a calcination process is collected, cooled and liquefied, followed by a carbonation reaction with the calcium oxide in a carbonation radiator. After the operations above are repeated in cycles for several times, carbonated MSWI fly ash is obtained for use as an aggregate or a filler.

公开(公告)号：US12048956B2

公开(公告)日：2024-07-30

申请号：US17256876

申请日：2019-06-04

Applicant: TOKUYAMA CORPORATION

Inventor： Kohei Omura ,  Takuya Seki

IPC: B09B3/40 ,  B07B1/46 ,  B09B101/30

CPC classification number: B09B3/40 ,  B07B1/4609 ,  B09B2101/30

Abstract: A method of recovering fly ash, including a firing step in which raw fly ash powder containing unburned carbon is fired to remove the unburned carbon by burning; measuring the content of unburned carbon in the raw fly ash powder; and obtaining a fine fly ash powder which is a component under a sieve and has a decreased content of unburned carbon as a result of sieve-classifying the raw fly ash powder. The perforation size of the sieve used in the sieve-classifying step is set depending upon the content of unburned carbon in the raw fly ash powder. The sieve has a small perforation size when the content of unburned carbon is large, and the sieve has a large perforation size when the content of unburned carbon is small. The fine fly ash powder, which is the component under the sieve, is recovered through the firing step.

公开(公告)号：US12024456B2

公开(公告)日：2024-07-02

申请号：US18261261

申请日：2022-05-24

Applicant: Nanjing Tech University

Inventor： Yuezhao Zhu ,  Wenqi Zhang ,  Zhenjie Zhang ,  Lei Wang ,  Yinfeng Wang

IPC: C02F9/00 ,  B01J20/22 ,  B01J20/30 ,  B01J20/34 ,  B08B3/10 ,  B08B3/14 ,  B08B13/00 ,  B09B3/80 ,  B09B101/30 ,  C02F1/00 ,  C02F1/04 ,  C02F1/28 ,  C02F1/44 ,  C02F1/66 ,  C02F11/122

CPC classification number: C02F9/00 ,  B01J20/226 ,  B01J20/3085 ,  B01J20/3425 ,  B01J20/3475 ,  B08B3/102 ,  B08B3/14 ,  B08B13/00 ,  B09B3/80 ,  B09B2101/30 ,  C02F1/004 ,  C02F2001/007 ,  C02F1/041 ,  C02F1/048 ,  C02F1/285 ,  C02F1/44 ,  C02F1/66 ,  C02F11/122

Abstract: A domestic waste incineration fly ash treatment system is provided, suitable for clean and efficient treatment of municipal solid waste incineration fly ash, and includes a three-stage water washing subsystem, a filtrate post-treatment subsystem, an MVR evaporation salt production subsystem, a pressure filtration subsystem, and a filter cake post-treatment subsystem.

公开(公告)号：US20240100579A1

公开(公告)日：2024-03-28

申请号：US17766218

申请日：2019-12-03

Applicant: ZHANGJIAGANG HONGCHANG STEEL PLATE CO., LTD. ,  JIANGSU SHAGANG GROUP CO., LTD. ,  INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO., LTD.

Inventor： RUI MAO ,  SHENDONG MAO ,  FEI WANG ,  HANG SU

IPC: B09B3/40 ,  B01D53/50 ,  B01D53/80 ,  B01D53/96 ,  B09B3/70 ,  C01B17/50 ,  C01F11/08 ,  C22B1/16

CPC classification number: B09B3/40 ,  B01D53/502 ,  B01D53/80 ,  B01D53/96 ,  B09B3/70 ,  C01B17/506 ,  C01F11/08 ,  C22B1/16 ,  B01D2251/404 ,  B01D2251/602 ,  B01D2251/604 ,  B01D2257/302 ,  B01D2258/0283 ,  B09B2101/30

Abstract: The present invention discloses a resource recovery method and a resource recovery system of desulfurized ash. The resource recovery method comprises: washing desulfurized ash with water, and performing solid-liquid separation to obtain solid residues rich in calcium sulfite and calcium sulfate and a solution rich in calcium hydroxide; preparing the solution into desulfurized slurry; and roasting the solid residues under the action of a reducing agent to obtain flue gas rich in sulfur dioxide and residues rich in calcium oxide. Therefore, the recovery of sulfur and calcium in the desulfurized ash is realized, and no solid waste, liquid waste, gas waste, etc. are produced in the process.

公开(公告)号：US20240286937A1

公开(公告)日：2024-08-29

申请号：US18571095

申请日：2022-06-30

Applicant: MIYOSHI OIL & FAT CO., LTD.

Inventor： Kazuhiro TERADA ,  Yuichiro TAKAMATSU ,  Koji KAWAI

IPC: C02F1/56 ,  A62D3/30 ,  A62D101/43 ,  B09B3/70 ,  B09B101/30 ,  C02F1/52 ,  C02F101/10 ,  C02F101/22

CPC classification number: C02F1/56 ,  A62D3/30 ,  B09B3/70 ,  C02F1/5245 ,  A62D2101/43 ,  B09B2101/30 ,  C02F2101/103 ,  C02F2101/106 ,  C02F2101/22

Abstract: Provided are: a novel heavy metal treatment agent having improved performance for treating elements of groups 6-16 of the periodic table or compounds thereof, including treatment of incinerated ash and wastewater, etc.; and a method for treating incinerated ash and wastewater using the heavy metal treatment agent. This heavy metal treatment agent includes at least one dithiocarbamate of one or more amine compounds represented by any of formulae (I) to (III):






wherein m represents an integer of 3 to 6;










wherein each of the n Xs independently represents a hydrogen atom or a 2-aminoethyl group, at least one X is a 2-aminoethyl group, n is an integer of 1 to 3 and the total number of nitrogen atoms is 4 to 8; and










wherein o is an integer of 0 to 2, p is 0 or 1, q is 0 or 1, r is an integer of 0 to 3, the sum of o, p and r is greater than or equal to 1, and the total number of nitrogen atoms is 3 to 7.