US 12,162,050 B2 · Landfill gas extraction control system throttle

Abstract

A system for extracting landfill gas from a landfill is provided. According to some embodiments, a control system for landfill gas extraction is provided. The control system uses a throttle to control flow of landfill gas extracted from the landfill. The throttle is actuated in use to vary the flow of gas between a well and a gas collection system, in accordance with a control algorithm that adjusts flow as a parameter in controlling gas extraction. The throttle is configured to ensure that there is at least some flow of landfill gas from the landfill to a gas output throughout operation. The extraction system provides an efficient system for landfill gas extraction, while mitigating a risk of creating undesired or unpleasant conditions and/or of violating regulations during operation.

Claims18

Dependent claims

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 at least one well to a gas output, the control system comprising:

a throttle comprising:
a movable member disposed in the well piping and configured to restrict flow of landfill gas through an area of the well piping, and a lip physically limiting rotational motion of the movable member beyond a position of maximum closure, wherein at least some landfill gas can flow past the throttle with the movable member at the position of maximum closure;
and
a controller configured to control a position of the movable member to control the flow of landfill gas.

1 more element

Dependencies are inferred from the claim text.

Landfill gas extraction control system throttle

Life of this patent

Landfill gas extraction control system throttle

Life of this patent

Abstract

Claims18