公开(公告)号：US10684112B2

公开(公告)日：2020-06-16

申请号：US16074647

申请日：2017-09-29

Applicant: SHANDONG UNIVERSITY

Inventor： Xinzhuang Cui ,  Weidong Cao ,  Lei Zhang ,  Junwei Su ,  Yilin Wang ,  Jun Li ,  Sheqiang Cui ,  Zhongxiao Wang

IPC: G01B7/16 ,  E02D17/20 ,  G01N33/24

Abstract: The structure has a subgrade or slope to be monitored and strip-shaped smart geosynthetic material compound devices. The strip-shaped smart geosynthetic material compound devices are buried to run through a subgrade or slope predicted slip crack surface. Gaps between the strip-shaped smart geosynthetic material compound devices and borehole inner walls are filled so that the force environment of the strip-shaped smart geosynthetic material compound devices is close to the subgrade or slope internal environment. Each strip-shaped smart geosynthetic material compound device has a strip-shaped geogrid, lead, and heat shrinkable tube. The lead is arranged in a length direction of the geogrid, and the lead and geogrid are fixedly connected at an interval of a set distance, with each fixed point forming a measuring point. The geogrid is wrapped in the heat shrinkable tube, and a free end of the lead is drawn out of the heat shrinkable tube.

公开(公告)号：US11384504B2

公开(公告)日：2022-07-12

申请号：US17042612

申请日：2019-11-19

Applicant: SHANDONG UNIVERSITY

Inventor： Xinzhuang Cui ,  Qing Jin ,  Jieru Wang ,  Yilin Wang ,  Jun Li ,  Xiaoning Zhang

IPC: E02D33/00 ,  E01C19/40 ,  E01C21/00 ,  E01C23/01 ,  E02D3/068 ,  G01P15/09 ,  G01S19/01

Abstract: A method and system determines in real time the bearing capacity of a foundation tamped by a high-speed hydraulic tamper. Four wireless acceleration sensors are arranged uniformly along tamping plate edges, sensor position tamping points are determined; the soil is tamped, the plate peak acceleration slows, tends to, and reaches stabilization in a range, a relationship curve between the tamping number and plate peak acceleration is determined; different loads are applied to the foundation to obtain corresponding settlements, coordinate axes are established, points are drawn according to each test data group and sequentially connected with a smooth curve to obtain a settlement-load curve, and the curve is fitted; a tamping number and foundation bearing capacity relationship is obtained; the two relationship curves are combined to obtain a relationship curve, and the foundation bearing capacity magnitude at a certain moment during the tamping operation is determined by using the acceleration index.

公开(公告)号：US11286162B2

公开(公告)日：2022-03-29

申请号：US16613840

申请日：2018-08-31

Applicant: SHANDONG UNIVERSITY

Inventor： Chunyuan Ma ,  Xiao Xia ,  Xiqiang Zhao ,  Tai Feng ,  Jun Li ,  Shizhen Zhang

IPC: C01B17/04 ,  B01D53/50 ,  B01D53/83 ,  B01D53/96 ,  C22B15/00

Abstract: A system and method for recovering sulfur in a copper smelting process includes removing fine dust from high-concentration SO2 flue gas from a matte smelting furnace, introducing the flue gas into a fluidized bed carbothermic reduction tower to be reduced by a carbon-based reducing agent to obtain reducing gas, passing the reducing gas through a high temperature separator to separate down unsaturated powder coke contained in the reducing gas, and condensing the reducing gas to obtain sulfur. The saturated powder coke entrained in the reducing gas enters a desorption tower to desorb SO2 gas therein, and the desorbed powder coke enters a fluidized bed sulfur reduction tower to continue to participate in the reduction reaction. Part of the SO2 gas discharged from the desorption tower is discharged to the fluidized bed carbothermic reduction tower to produce sulfur, and the other part enters a desulfurization tower.

公开(公告)号：US11292718B2

公开(公告)日：2022-04-05

申请号：US16618937

申请日：2018-12-27

Applicant: SHANDONG UNIVERSITY

Inventor： Chunyuan Ma ,  Xiao Xia ,  Lin Cui ,  Liqiang Zhang ,  Xiqiang Zhao ,  Jun Li ,  Tai Feng ,  Shizhen Zhang

IPC: B01D1/28 ,  B01D39/12 ,  B01D39/20 ,  B01D53/50 ,  B01D53/56 ,  B01D53/80 ,  B03C3/16 ,  C01B17/04 ,  C01B17/05

Abstract: The present invention discloses a process for preparing sulfur from reduction of sulfate/nitrate by iron-carbon and recovering desulfurization/denitration agents. High-concentration SO2 flue gas produced by calcination of a sulfate and NOx produced by heating decomposition of a nitrate can be directly reduced to elemental sulfur vapor and N2 through reaction with an iron-carbon material at a high temperature. Then, after dust removal, cooling and fine dust removal, sulfur is recovered by a sulfur recovery device, and metal oxides can replace alkaline mineral resources such as limestone as raw materials of desulfurization (denitration) agents. This process can recycle the desulfurization and denitration agents.