公开(公告)号：US20220090782A1

公开(公告)日：2022-03-24

申请号：US17537550

申请日：2021-11-30

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Jun XIANG ,  Meng ZHU ,  Jing ZHOU ,  Lei CHEN ,  Sheng SU ,  Jun XU ,  Aishu LI ,  Song HU ,  Yi WANG ,  Long JIANG ,  Hengda HAN

IPC: F23C9/06 ,  F23C7/02 ,  F23C5/08 ,  F23C3/00

Abstract: A supercritical CO2 boiler capable of realizing uniform combustion, corrosion resistance and coking resistance, and a boiler system are provided. The supercritical CO2 boiler includes a main combustion chamber, an upper furnace, a furnace arch and a flue, wherein a cross section of the main combustion chamber is circular or oval, or is of an N-sided shape, where N>4; at least four burner groups are disposed on the main combustion chamber, each group of burner nozzles corresponding to each burner group includes a recirculating air nozzle, a primary air nozzle and a secondary air nozzle; lateral recirculating air nozzles symmetrically distributed are respectively disposed at two sides of the primary air nozzle, the recirculating air nozzle and the lateral recirculating air nozzle are configured to feed recirculating flue gas or a mixed gas of the recirculating flue gas and secondary air into the main combustion chamber.

公开(公告)号：US20200264106A1

公开(公告)日：2020-08-20

申请号：US16648666

申请日：2018-03-28

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Jun XIANG ,  Jun XU ,  Sheng SU ,  Song HU ,  Yi WANG ,  Jiawei LIU ,  Zhe XIONG ,  Jing ZHOU ,  Hao TANG ,  Mengxia QING ,  Wei LIU

IPC: G01N21/65 ,  G01N33/22

Abstract: The present invention relates to a method for detecting moisture and volatile matter content in raw coal using the value of baseline drift, comprising the following steps: selecting a plurality of types of standard coal having different coal ranks and different ash contents, performing a Raman spectroscopy test and a proximate analysis on each type of standard coal, calculating the value of baseline drift in the Raman spectrum, and setting up the mapping relationship between the value of baseline drift in the Raman spectrum and the characteristic parameters of the moisture and the volatile matter content. The same method and reference are used to perform a Raman spectroscopy test on raw coal to be tested, so as to calculate the value of baseline drift in a Raman spectrum of the raw coal to be tested, and obtain the moisture and volatile matter content of the raw coal to be tested.

公开(公告)号：US20250122999A1

公开(公告)日：2025-04-17

申请号：US18861580

申请日：2024-05-23

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Jun XIANG ,  Ziya WEI ,  Wei DENG ,  Yiqing YANG ,  Hengda HAN ,  Jun SU ,  Guangying LI ,  Yi WANG ,  Song HU ,  Sheng SU ,  Long JIANG ,  Jun XU ,  Kai XU

IPC: F23K3/00 ,  B02C25/00

Abstract: The present invention provides a coal feeding control method and system for a small pulverized coal silo, the method includes: acquiring a boiler load increase signal, and determining the target function F(t) for boiler load control obtaining the current coal mill output signal B(t), where B(t) is the fuel quantity signal at the outlet of the coal mill that changes over time from the start time; comparing B(t) with F(t): if B(t) cannot meet the fuel quantity requirements of F(t), activate the small pulverized coal silo connected to the boiler; otherwise, the small pulverized coal silo remains inactive; determining the coal feeding signal f(t) for the small pulverized coal silo, and further determining the coal feeding control signal f(t) for the small pulverized coal silo; controlling the small pulverized coal silo to feed coal to the boiler, quickly changing the combustion rate in the furnace, and increasing the boiler load.

公开(公告)号：US20200292432A1

公开(公告)日：2020-09-17

申请号：US16759361

申请日：2018-11-09

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Song HU ,  Hanjian LI ,  Jun XIANG ,  Huanying CHI ,  Gongxiang SONG ,  Tao LIU ,  Sheng SU ,  Yi WANG ,  Kai XU ,  Limo HE ,  Jun XU ,  Hengda HAN

IPC: G01N5/04

Abstract: A magnetic suspension thermobalance based on quick photothermal heating comprises a sealed container, a reaction tank, a magnetic suspension device, a laser displacement monitoring component, a photothermal heating component and a photothermal heating component displacement device. A method comprises following steps: weighing a testing sample and adding same into the reaction tank; putting the reaction tank into the sealed container together with a magnetic suspension float; causing the magnetic suspension float to float in the sealed container; introducing gas into the sealed container; measuring the real-time position of the magnetic suspension float, and causing same to a measurement zero point; heating the reaction tank; maintaining a heating beam on the reaction tank; measuring the temperature of the testing sample in the reaction tank; and recording the displacement of the magnetic suspension float, and converting said displacement into mass.