With the dry pressure swing adsorption the ETW energy technology of bio methane market through a vigorous revival can look forward. Biogas from maize, grass is about 30 km south of Ulm on the Laupheim site for four years and whole crop silage produced. The raw biogas will be prepared by the natural gas Sudwest GmbH and provided the end customers via its own network of natural gas as bio-methane. In 2008, the first bio-gas processing plant at the site in operation was taken for this. The pressure swing adsorption by Schmack Carbotech processed about 600 standard cubic metres of raw biogas per hour. Four-person households can be powered with this amount almost 2000 continuously. The operator to expand of the production capacity decided to respond to the increasing demand for bio-methane. With practical experience of the operation and the knowledge to take advantage of the dry pressure swing adsorption was chosen on a bio-methane plant the ETW energy technology.

One of the main reasons for the contract to the company: the specialists in Moers, Germany had the best solution for the Challenge of integrating the new equipment in the inventory. Before the damp raw biogas adsorption tanks, be removed hydrogen sulfide and condensed water. The remaining moisture is removed as a side effect of the pressure swing adsorption. The adsorption columns are about intelligent control so connected, that the purity of the product gas fluctuating Rohbiogaszusammensetzungen and quantities has a stable methane content of 98 percent. Continuous quality measurements ensure short response times. The bio-methane is piped then with about six bar to the one power station, which acts as an interface to the gas network. For the first time bio-methane produced in Laupheim with the litigation of the DWA developed by ETW process that differs significantly from the systems established in Germany.

The result is an extraordinarily high methane content in the product gas at least methane losses and lowest disclose Rahman energy consumption: so can 98 percent of the methane in the gas network be spent. The 2 percent loss of methane can be traced in the biological process of the biogas plant on a subsequent incineration plant in the form of heat. 140 kW thermal output at 80 C from the gas treatment can together with the recovery of the compression heat total decoupling. With a power of 130 kW of electrical power, as a result of a technically optimized design, the operator has a very economical plant technology especially as no other materials are required in addition to the use of activated carbon for the desulphurization. That domestic problems such as heat, fresh water supplies, winter exercise, corrosion and deposits, channeling and dealing with chemical subs-dance does not exist, has many advantages in addition to an increased operational reliability also from ecological point of view. With the dry pressure swing adsorption the ETW energy technology of bio methane market through a vigorous revival can look forward. Just because with the bio-methane production the only viable Opportunity exists to store renewable energy, it remains nevertheless the legislator’s task to clearly define the role of biogas at the turn of the energy.