Ship desulfurization and denitrification integrated process and ship desulfurization and denitrification integrated device

A desulfurization, denitrification and denitrification technology, applied in the field of ship desulfurization and denitrification integrated process, can solve the problems of complex desulfurization process, economic loss, large floor space, etc., achieve wide application prospects, achieve standard discharge, and small floor space effects.

Active Publication Date: 2018-01-09
ZHEJIANG UNIV OF TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Sulfur dioxide (SO 2 ) and nitrogen oxides (NO X ) is one of the main sources of air pollution, the resulting environmental pollution, especially acid rain, smog is very serious, causing serious economic losses
However, it is currently used for ship exhaust treatment, and there are mainly the following problems: (1) The smoke temperature of ships is low, around 200 degrees, which cannot meet the requirements of SCR catalysts; (2) Ships generally use heavy oil, and the flue gas contains a lot of tar and SO 2 , the anti-poison ability of SCR catalys

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  • Ship desulfurization and denitrification integrated process and ship desulfurization and denitrification integrated device
  • Ship desulfurization and denitrification integrated process and ship desulfurization and denitrification integrated device

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[0069] Example 1:

[0070] Such as figure 2 As shown, experiments were performed using the process flow of the present invention.

[0071] according to figure 2 1% NaOH solution is sprayed in the desulfurization spray tower; 60% LiBr solution is sprayed in the denitrification drying oxidation tower, and the upper catalytic zone of the tower is filled with HZSM-5 molecular sieve catalyst, and the mass space velocity is controlled at 0~20,000h -1 , Spray 1% NaOH solution and 0.5% NaSO in the denitration absorption tower 3 The solution absorption liquid, the flue gas enters the integrated desulfurization and denitrification system, and first removes SO in the flue gas through the desulfurization absorption tower 2 , And then enter the denitrification drying oxidation tower to dry, absorb the water vapor in the flue gas, and then use the oxygen in the flue gas to oxidize the NO in the flue gas to NO under the action of the HZSM-5 molecular sieve catalyst 2 , Increase the degree of ox...

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Abstract

The invention discloses a ship desulfurization and denitrification integrated process. A whole system mainly comprises a desulfurizing absorption tower 10, a denitrification drying and oxidation tower20, a denitrification spray tower 30 and a drying liquid regeneration tower 40. The ship desulfurization and denitrification integrated process is simple in technological process and operation, smallin land occupation, low in cost and energy consumption and high in desulfurization and denitrification efficiency; the concentration of SO2 in the discharged clean flue gas is not higher than 30mg/m<3>, and the concentration of NOX in the discharged clean flue gas is not higher than 50mg/m<3>, so that the discharged clean flue gas meets the national standards; therefore, the ship desulfurizationand denitrification integrated process can be widely applied to desulfurization and denitrification of flue gas of ships.

Description

Technical field [0001] The invention relates to an integrated ship desulfurization and denitrification process, which is applied to a wet flue gas desulfurization and denitrification system, and belongs to the technical field of ship flue gas desulfurization and denitration treatment. Background technique [0002] Sulfur Dioxide (SO 2 ) And nitrogen oxides (NO X ) Is one of the main sources of air pollution. The resulting environmental pollution, especially acid rain and haze, is very serious, causing serious economic losses. At the same time, environmental pollution is always threatening people's health. Therefore, increasing the treatment of sulfur dioxide and nitrogen oxides has no time to wait. [0003] As for ship exhaust gas, theoretically estimated that a large low-speed diesel engine with a power of 10,000 kW emits combustion products into the atmosphere every year for 6000 hours. NOx alone can reach more than 1,000 tons per year, and other combustion products (such as SO...

Claims

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Application Information

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IPC IPC(8): B01D53/92B01D53/50B01D53/56B01D53/94B01D53/28F01N3/24
Inventor 卢晗锋王鹏周飞翔周瑛吴相浩
Owner ZHEJIANG UNIV OF TECH
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