Coal gas wet oxidation desulfurizing tower type regeneration tail gas recycling process and device thereof

• Main Authors: FAN WENSONG, FAN XIAOGUANG
• Format: Patent
• Language: English
• Published: 11.11.2015
• Subjects: CHEMISTRY; FUELS; LUBRICANTS; METALLURGY; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLEGASES CONTAINING CARBON MONOXIDE; TECHNICAL GASES CONTAINING CARBON MONOXIDE

The invention provides a coal gas wet oxidation desulfurizing tower type regeneration tail gas recycling process which comprises the following steps: (1) compressed air for regeneration enters from the bottom of a regeneration tower, and regeneration tail gas is discharged from the top of the regeneration tower; (2) the regeneration tail gas discharged from the top of the regeneration tower is recovered and conveyed to an ejecting regeneration device; and (3) the regeneration tail gas which enters the ejecting regeneration device and is recovered from the regeneration tower participates in an ejecting regeneration process of the ejecting regeneration device. The device for realizing the process comprises the regeneration tower and the ejecting regeneration device, wherein a regeneration tail gas outlet of the regeneration tower is communicated with the upper part of the ejecting regeneration device. According to the invention, the regeneration tail gas of a tower type regeneration system in a desulfurizing regeneration device can be recovered and participates in the regeneration process of the ejecting regeneration device, and then oxygen in the regeneration tail gas is recycled, so that external discharge of the tail gas is avoided; and because a considerable number of oxygen in the tail gas discharged after passing through the ejecting regeneration device is consumed, the tail gas can be returned to a gas system, so that a purification process required for the external discharge can be omitted.