Technology for simultaneous treatment of ship tail gas desulphurization and ship ballast water
A technology for ship ballast water and ship exhaust, which is used in degassed water/sewage treatment, multi-stage water treatment, natural water treatment, etc. to achieve reliable operation and low energy consumption.
Active Publication Date: 2016-03-23
WUXI BRIGHTSKY ELECTRONICS +1
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Problems solved by technology
At present, there is no method that can simultaneously desulfurize the ship's exhaust gas and take into account the treatment of the ship's ballast water
Method used
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[0023] See figure 1 , figure 2 Shown, a kind of process of ship tail gas desulfurization and ship ballast water treatment simultaneously, it comprises the following steps:
[0024] (1) Sodium alkali absorption and desulfurization to obtain sodium sulfite
[0025] Ship exhaust gas enters the sodium-alkali absorption tower, and the SO X Absorption and removal, while washing PM and other harmful substances in the ship exhaust gas, the purified ship exhaust gas is discharged through the exhaust pipe; sodium hydroxide solution absorbs SO X Finally, a sodium sulfite solution is formed; the sodium sulfite solution is precipitated and flocculated to remove the PM trapped in the solution from the washing tail gas, and a clean sodium sulfite solution is obtained. The enriched pollutants such as PM are collected and transferred to the shore for treatment;
[0026] (2) Ballast water filtration, deoxygenation and sterilization
[0027] The ballast water passes through the filter to re...
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The invention belongs to the ship tail gas desulphurization / ballast water treatment and environmental protection technology field, and especially relates to a technology for simultaneous treatment of ship tail gas desulphurization and ship ballast water. The technology can achieve low energy consumption, high efficiency and reliable operation, and fully utilizes a desulphurization by-product sodium sulfite to achieve the purpose of ship ballast water deoxidation treatment. The technology comprises the following steps: ship tail gas goes into a sodium alkali absorbing tower, SOX is absorbed and removed through a sodium hydroxide solution; the sodium hydroxide solution absorbs SOX, and then a sodium sulfite solution is formed; ballast water goes through a filter, organisms and impurities in the water are removed, the filtered ballast water and the sodium sulfite solution are mixed, the ballast water mixed with sodium sulfite is subjected to sterilization through supersonic waves and goes to a ship ballast tank; in the ballast tank, sodium sulfite reacts with dissolved oxygen in the ballast water gradually to generate sodium sulfate, and deoxidation of the ballast water is carried out at the same time; when the ballast water is discharged, supersonic wave sterilization is carried out, then air is injected into the ballast water in a discharge pipe and aeration is achieved.
Description
technical field [0001] The invention belongs to the technical field of ship tail gas desulfurization / ballast water treatment and environmental protection, and in particular relates to a process for simultaneous treatment of ship tail gas desulfurization and ship ballast water. Background technique [0002] Ship shipping undertakes 90% of the global trade volume, while CO 2 emissions accounted for only 1.8% of the global total. Therefore, ship shipping is a greener mode of transportation than air and land transportation. With the rapid development of the global shipping industry, the pollution caused by the tail gas emitted by ships is becoming more and more serious. The most representative example is the sulfur oxides (SO2) emitted by ships. x ) not only seriously affects human health, but also causes acid rain and damages the global ecosystem. In addition to the problem of air pollution, the hazards of invasive marine alien organisms caused by ship's ballast water have l...
Claims
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IPC IPC(8): B01D53/78B01D53/50B01D47/00C02F9/08
CPCB01D47/00B01D53/502B01D2251/304C02F1/001C02F1/20C02F1/36C02F9/00C02F2103/008C02F2301/08
Inventor 张拿慧胡宇胡克峰王卓远
Owner WUXI BRIGHTSKY ELECTRONICS