A ship flue gas purification filter equipment

Abstract

The invention provides flue gas purification and filtration equipment for ships, and relates to the technical field of ship flue gas purification treatment. The flue gas purification and filtration equipment for the ships is technically characterized by comprising a purification box as well as a purification mechanism and a filtration mechanism which are arranged in the purification box; the purification mechanism comprises a purification liquid, a rotating rod, a spiral stirring blade, a first rotating motor, a waterproof cover and a partition board; the partition board is arranged in the purification box, a flue gas inlet is formed in the side wall surface of the purification box, the purification liquid is contained in the purification box, the first rotating motor is arranged in the purification box, the rotating rod is spirally connected to a drive end of the first rotating motor through a flange, the spiral stirring blade is arranged on the rotating rod, and the waterproof coveris arranged in the purification box and located on one side of the first rotating motor; the filtration mechanism is used for filtering purified flue gas. The flue gas purification and filtration equipment for ships is simple to operate, novel in structure, high in safety and higher in response speed, so that the desulphurization reaction is more thorough, the desulphurization efficiency is increased, the size is relatively small, and the energy consumption is low.

Description

technical field [0001] The invention relates to the technical field of ship flue gas purification treatment, in particular to a ship flue gas purification and filtering device. Background technique [0002] At present, the main technologies for reducing SO emissions from ship flue gas include: fuel pre-treatment (obtaining low-sulfur oil), fuel substitution (such as LNG) and flue gas post-treatment. Although the use of pre-treated fuel or alternative fuel can meet the emission limit requirements of IMO, it will greatly increase the operating cost of the ship due to the improvement of the existing fuel oil refining and ship fuel combustion equipment structure. [0003] The post-treatment technology of ship flue gas is the main technical means to realize the compliance of ship flue gas emission by modifying the tail end of the ship flue gas emission system, which does not involve the modification of existing fuel oil and combustion equipment. The method of ship flue gas desul...

AI Technical Summary

Problems solved by technology

The pH value of natural seawater is generally 7.3-8.3, and the alkalinity is 2.0-3.0mmol / L. Although it can fully absorb SO in the flue gas, the discharged washing water is weakly acidic, with a pH of about 3-6, which does not meet IMO (pH≥6.5) and EPA (pH≥6.0) washing water discharge requirements

And the sulfide in the washing water mainly exists in the form of reducing HSO and SO, and the COD value does not meet the requirements

Images