AUTOMATED COMPLIANCE MEASUREMENT AND CONTROL FOR LANDFILL GAS EXTRACTION SYSTEMS

    公开(公告)号:US20240109111A1

    公开(公告)日:2024-04-04

    申请号:US18540281

    申请日:2023-12-14

    IPC分类号: B09B1/00

    CPC分类号: B09B1/006

    摘要: A method for use by a system coupled to at least one sensor and at least one flow control mechanism of a gas extraction system, the system comprising at least one controller and configured for use in connection with a landfill gas extraction process for extraction of landfill gas from a landfill via the gas extraction system, the method comprising: using the at least one controller to perform: obtaining, based on at least one measurement made by the at least one sensor, at least one current value indicative of a selected characteristic of the landfill gas extraction process, determining, at discrete time intervals, whether the at least one current value satisfies at least one compliance criterion for the selected characteristic, and when it is determined that the at least one current value does not satisfy the at least one compliance criterion for the selected characteristic, performing a corrective action.

    LANDFILL GAS EXTRACTION CONTROL SYSTEM
    4.
    发明公开

    公开(公告)号:US20240109110A1

    公开(公告)日:2024-04-04

    申请号:US18526824

    申请日:2023-12-01

    IPC分类号: B09B1/00

    CPC分类号: B09B1/006 G01N33/0016

    摘要: A control system for controlling extraction of landfill gas from a landfill via a gas extraction system comprising well piping, the landfill gas having a first temperature when extracted, the control system comprising: a gas composition chamber coupled to the well piping and comprising at least one sensor configured to measure one or more characteristics of a landfill gas sample in the gas composition chamber; a temperature control mechanism configured to heat the landfill gas sample in the gas composition chamber to a second temperature at least a threshold amount greater than the first temperature; and a controller configured to control the at least one sensor to measure the one or more characteristics of the landfill gas sample in the gas composition chamber when a temperature of the landfill gas sample in the gas composition chamber is at least the threshold amount greater than the first temperature.

    DEVICES AND TECHNIQUES RELATING TO LANDFILL GAS EXTRACTION

    公开(公告)号:US20240100578A1

    公开(公告)日:2024-03-28

    申请号:US18327516

    申请日:2023-06-01

    IPC分类号: B09B1/00 E21B43/12 G01N33/00

    摘要: Devices and techniques related to landfill gas extraction are disclosed. A technique for controlling extraction of landfill gas from a landfill through a gas extraction system is described. The method may include measuring a plurality of values indicating conditions associated with the landfill; computing, based at least in part on the plurality of values and on a model of the landfill, a predicted future state of the landfill; determining, based at least in part on the predicted future state of the landfill, one or more control parameters for one or more respective control devices configured to control operation of the gas extraction system; applying the one or more control parameters to the one or more respective control, and with the one or more control devices, controlling extraction of the landfill gas from the landfill based, at least in part, on the one or more respective control parameters.

    Automated compliance measurement and control for landfill gas extraction systems

    公开(公告)号:US11883864B2

    公开(公告)日:2024-01-30

    申请号:US17152252

    申请日:2021-01-19

    IPC分类号: B09B1/00

    CPC分类号: B09B1/006

    摘要: A method for use by a system coupled to at least one sensor and at least one flow control mechanism of a gas extraction system, the system comprising at least one controller and configured for use in connection with a landfill gas extraction process for extraction of landfill gas from a landfill via the gas extraction system, the method comprising: using the at least one controller to perform: obtaining, based on at least one measurement made by the at least one sensor, at least one current value indicative of a selected characteristic of the landfill gas extraction process, determining, at discrete time intervals, whether the at least one current value satisfies at least one compliance criterion for the selected characteristic, and when it is determined that the at least one current value does not satisfy the at least one compliance criterion for the selected characteristic, performing a corrective action.

    Devices and techniques relating to landfill gas extraction

    公开(公告)号:US11602777B2

    公开(公告)日:2023-03-14

    申请号:US17369318

    申请日:2021-07-07

    IPC分类号: B09B1/00 E21B43/00

    摘要: A control system for controlling extraction of landfill gas, comprising: at least one sensor configured to measure one or more characteristics of landfill gas; at least one flow control mechanism disposed in well piping and configured to control flow of the landfill gas through the well piping; and at least one processor configured to: obtain a measured concentration of a first gas in landfill gas; determine whether the measured concentration of the first gas is either less than a first threshold concentration or greater than a second threshold concentration; when it is determined that the measured concentration is less than the first threshold concentration, control the at least one flow control mechanism to reduce flow rate of landfill gas; and when it is determined that the concentration is greater than the second threshold concentration, control the at least one flow control mechanism to increase the flow rate of landfill gas.

    Landfill gas extraction systems and methods

    公开(公告)号:US11273473B2

    公开(公告)日:2022-03-15

    申请号:US16901430

    申请日:2020-06-15

    IPC分类号: E21B43/12 B09B1/00 E21B34/02

    摘要: A control system for controlling extraction of landfill gas from a landfill via a gas extraction system, the gas extraction system comprising well piping for coupling a plurality of wells to a gas output. The control system comprises a controller configured to: obtain a value indicating measured energy content of landfill gas collected at the gas output from the plurality of wells; determine whether the measured energy content is different from a target energy content; and in response to determining that the measured energy content is different from the target energy content: control a plurality of valves disposed in the well piping to change flow rates of landfill gas being extracted from at least some of the plurality of wells at least in part by changing degrees to which the plurality of valves are open.

    Devices and techniques relating to landfill gas extraction

    公开(公告)号:US11084074B2

    公开(公告)日:2021-08-10

    申请号:US16831131

    申请日:2020-03-26

    IPC分类号: B09B1/00 G01N33/00 E21B43/12

    摘要: Devices and techniques related to landfill gas extraction are disclosed. A technique for controlling extraction of landfill gas from a landfill through a gas extraction system is described. The method may include measuring a plurality of values indicating conditions associated with the landfill; computing, based at least in part on the plurality of values and on a model of the landfill, a predicted future state of the landfill; determining, based at least in part on the predicted future state of the landfill, one or more control parameters for one or more respective control devices configured to control operation of the gas extraction system; applying the one or more control parameters to the one or more respective control, and with the one or more control devices, controlling extraction of the landfill gas from the landfill based, at least in part, on the one or more respective control parameters.

    Devices and techniques relating to landfill gas extraction

    公开(公告)号:US10682678B2

    公开(公告)日:2020-06-16

    申请号:US16694745

    申请日:2019-11-25

    IPC分类号: B09B1/00 G01N33/00 E21B43/12

    摘要: Devices and techniques related to landfill gas extraction are disclosed. A technique for controlling extraction of landfill gas from a landfill through a gas extraction system is described. The method may include measuring a plurality of values indicating conditions associated with the landfill; computing, based at least in part on the plurality of values and on a model of the landfill, a predicted future state of the landfill; determining, based at least in part on the predicted future state of the landfill, one or more control parameters for one or more respective control devices configured to control operation of the gas extraction system; applying the one or more control parameters to the one or more respective control, and with the one or more control devices, controlling extraction of the landfill gas from the landfill based, at least in part, on the one or more respective control parameters.