BIOGAS DESULFURIZATION EQUIPMENT

• Main Author: SAITO TATSUHISA
• Format: Patent
• Language: English; Japanese
• Published: 04.11.2016
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; CHEMISTRY; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; METALLURGY; NATURAL GAS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE

PROBLEM TO BE SOLVED: To provide biogas desulfurization equipment that can remove hydrogen sulfide in biogas to a concentration of 1 ppm or less without generating dew condensation in the desulfurization equipment.SOLUTION: Biogas desulfurization equipment 1 is selected which comprises: a fuel cell 2 and a waste heat supply apparatus 3 that use biogas as a fuel; a biogas supply passage L1 that supplies biogas generated in a fermentation tank; a first supply passage L2 that supplies the biogas to the fuel cell 2; a second supply passage L3 that supplies the biogas to the waste heat supply apparatus 3; a first desulfurization apparatus 4 that is installed in the biogas supply passage L1; a second desulfurization apparatus 5 that is installed in the first supply passage L2 to reduce the concentration of hydrogen sulfide in the biogas on the secondary side to 1 ppm or less; and a heat exchanger 6 that exchanges heat between the biogas and waste heat from at least one of the fuel cell 2 and the waste heat supply apparatus 3 on the primary side of the second desulfurization apparatus 5 to heat the biogas.SELECTED DRAWING: Figure 1 【課題】脱硫設備で結露を生じることなく、バイオガス中の硫化水素濃度を１ｐｐｍ以下まで除去することが可能なバイオガス脱硫設備を提供する。【解決手段】バイオガスを燃料とする燃料電池２及び排熱供給設備３と、発酵槽で発生したバイオガスを供給するバイオガス供給経路Ｌ１と、燃料電池２にバイオガスを供給する第１供給経路Ｌ２と、排熱供給設備３にバイオガスを供給する第２供給経路Ｌ３と、バイオガス供給経路Ｌ１に設けられた第１脱硫設備４と、第１供給経路Ｌ２に設けられ、二次側のバイオガス中の硫化水素濃度を１ｐｐｍ以下とする第２脱硫設備５と、第２脱硫設備５の一次側で、バイオガスと、燃料電池２及び排熱供給設備３の少なくとも一方からの排熱と、を熱交換させて、バイオガスを加熱する熱交換器６を備える、バイオガス脱硫設備１を選択する。【選択図】図１