Washing tower for ship tail gas treatment

Abstract

The invention discloses a washing tower for ship tail gas treatment. The washing tower comprises a cylinder body, wherein an upper sealing head is arranged at the upper part of the cylinder body; a purified flue gas outlet is formed in the upper sealing head; the lower part of the cylinder body is provided with a conical lower seal head protruding downwards and a support for lifting the cylinder body to a certain height; a washing wastewater outlet is formed in the lower sealing head; a spraying pipe system is arranged in the cylinder body; the spraying pipe system comprises a spraying main pipe with the bottom sealed and a spraying liquid inlet short pipe arranged on the upper portion of the spraying main pipe and perpendicular to the spraying main pipe; a spraying slurry inlet is formedin the spraying liquid inlet short pipe; a spiral tower plate is arranged on the periphery of the spraying main pipe; and a certain distance is formed between the bottom of the spiral tower plate andthe bottom of the lower sealing head. The washing tower is compact in structure, reasonable in design and good in washing effect.

Description

technical field [0001] The invention relates to the technical field of marine desulfurization, in particular to a scrubber for treating ship tail gas. Background technique [0002] Ship exhaust gas usually includes harmful gases and smoke, if the exhaust gas is not properly treated and discharged directly, it will pollute the air. The International Maritime Organization (IMO) stipulates that from 2020, the new 0.5% sulfur oxide emission cap will take effect globally. Among the many solutions to reduce sulfur oxide emissions, the installation of ship exhaust scrubbers is the most common technical solution. At present, the spray scrubbers that are widely used mostly pass the exhaust gas from the ship engine into the tower from the bottom of the scrubber, and the flue gas is evenly distributed in multiple spray pipe layers in the height space inside the scrubber body. While the flue gas diffuses vertically upward in the washing tower, it contacts and reacts with the liquid dr...

AI Technical Summary

Problems solved by technology

While the flue gas diffuses vertically upward in the washing tower, it contacts and reacts with the liquid droplets sprayed from the spray pipe layer to achieve the desulfurization effect; at the same time, the cleaned flue gas is discharged from the top of the washing tower, and the washing liquid is discharged from the bottom of the washing tower. However, this technical solution has the following problems: 1. It is necessary to install a device to prevent the washing liquid from being poured into the exhaust gas inlet and flow back into the engine; 2. It is easy to ca

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