NOVELTY - Methane conversion and conveying and desulfurization purifying device comprises a booster fan (10), a controlling cabinet (11), a gas inlet pipe (1) and a gas outlet pipe (8). The gas inlet pipe is connected with a dehydration dust removal tank (2), where the gas inlet of a primary desulfurization tank is connected with the gas outlet of the dehydration tank. The gas outlet of the primary desulfurization tank is connected with primary and secondary booster fans by gas pipelines. The outlet of the secondary booster fan is connected with the gas inlet of the secondary desulfurization tank.    USE - The device is useful for removing dust, dehydrating, desulfurizing and methane conversion and conveying.    ADVANTAGE - The device has a simple structure, consumes less energy, is safe to use, occupies less space and a cost effective converting and conveying of methane.    DETAILED DESCRIPTION - Methane conversion and conveying and desulfurization purifying device comprises a booster fan (10), a controlling cabinet (11), a gas inlet pipe (1) and a gas outlet pipe (8). The gas inlet pipe is connected with a dehydration dust removal tank (2), where the gas inlet of a primary desulfurization tank is connected with the gas outlet of the dehydration dust removal tank. The gas outlet of the primary desulfurization tank is connected with primary and secondary booster fans by gas pipelines. The outlet of the secondary booster fan is connected with the gas inlet of the secondary desulfurization tank, where the secondary desulfurization tank is provided with a gas outlet pipe and a pressure sensor. The pressure sensor, the primary and the secondary booster fans are connected with a transducer by leads, where the transducer is arranged on the controlling cabinet.    DESCRIPTION OF DRAWING(S) - The figure represents a schematic representation of the methane transmission frequency and desulfurization device.    Gas inlet pipe (1)    Dehydration dust removal tank (2)    Gas outlet pipe (8)    Booster fan (10)    Controlling cabinet (11)