Process for producing biomethane for injection into a gas network from a plurality of production sites and set of devices for the implementation thereof

摘要

The present invention relates to the production of biomethane intended for supplying a natural gas network from n biogas production plants Ii, with i varying from 1 to n, in which each of the plants produces and stores the biogas which is collected at each of the plants via a mobile collection device and the collected biogas is purified so as to produce biomethane which is subsequently injected into a natural gas network. The invention also makes provision for storing the biogas, partially purified biogas, or biomethane in order to ensure the continuity of the supply of biomethane to the network during the collection round.

主权项

1. A process for supplying biomethane to a natural gas network from n biogas production plants, wherein n is greater than 1, comprising the steps of:
producing biogas at each of the biogas production plants; storing each of the produced biogases at a respective one of the biogas production plants in a respective high-pressure buffer storage tank; collecting all of the stored biogases via a mobile collection device circulating between the biogas production plants; purifying the collected biogas to produce biomethane; and injecting the biomethane into the natural gas network, wherein the step of collecting all of the stored biogases via a mobile collection device is performed before the step of purifying the collected biogas.