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Seawater desulfurization process and system for ship flue gas with high specific surface area

A high specific surface area, desulfurization process technology, applied in the high specific surface area ship flue gas seawater desulfurization process and system field, can solve the problems of poor desulfurization effect, complex desulfurization methods, large volume of desulfurization equipment, etc., achieve good wettability, reduce ship Space, reduced area and volume effects

Inactive Publication Date: 2021-06-11
WEIHAI PUYI MARINE ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of this application is to provide a high specific surface area ship flue gas seawater desulfurization process and system, aiming to solve the technical problems of poor desulfurization effect due to the large volume of desulfurization equipment and complex desulfurization methods in traditional desulfurization methods

Method used

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  • Seawater desulfurization process and system for ship flue gas with high specific surface area
  • Seawater desulfurization process and system for ship flue gas with high specific surface area

Examples

Experimental program
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Embodiment 1

[0029] see figure 1 , is a schematic flow diagram of a high specific surface area ship flue gas seawater desulfurization process provided by an embodiment of the present application. For the convenience of description, only the parts related to this embodiment are shown, and the details are as follows:

[0030] In one of the embodiments, the first aspect of the present application provides a high specific surface area ship flue gas seawater desulfurization process, which is used to desulfurize the flue gas discharged from sulfur-containing marine diesel engines, including the following steps:

[0031] S1. Fill the inside of the washing tower with a high specific surface area hydrophilic filler, and spray seawater from the upper part of the washing tower to the inside of the washing tower.

[0032] Specifically, the interior of the washing tower is equipped with a supported hydrophilic catalyst TiO 2 -Al 2 o 3 Hydrophilic structured packing with high specific surface area, t...

Embodiment 2

[0042] All the other are identical with embodiment 1, and difference is: fixed seawater spraying amount is 25m 3 / h, the corresponding liquid-gas ratio is 6.4L / Nm3, by changing the operating temperature of the seawater scrubber, test the pressure drop of the scrubber bed layer and the removal of SO from the flue gas of seawater marine diesel engine 2 The reaction results are shown in Table 2.

[0043] Table 2 Scrubber pressure drop and seawater SO removal 2 removal rate

[0044] Experiment number temperature(℃) Washing tower pressure drop (Pa) SO 2 Removal rate (%)

[0045] It can be seen that the desulfurization rate of seawater with high specific surface area hydrophilic structured catalytic packing can reach 99% at different temperatures, and the desulfurization effect is remarkable. At the same time, the pressure drop of the bed layer of the scrubber is also very low, only about 200Pa, which will not affect the flue gas discharged from the ship's flue g...

Embodiment 3

[0047] The rest are the same as in Example 2, the difference is that by changing the packing volume of the high specific surface area hydrophilic structured catalytic packing, the volumes are respectively 0.3m 3 、0.4m 3 、0.5m 3 and 0.6m 3 , corresponding to the airspeed of 12920h -1 、9690h -1 、7752h -1 and 6460h -1 , to test the removal of SO from marine diesel engine flue gas by seawater 2 The reaction results are shown in Table 3.

[0048] Table 3 High specific surface area hydrophilic structured catalytic packing packing volume and seawater SO removal 2 removal rate

[0049] Experiment number Filling volume (m 3 )

Acid seawater cleaning time (h -1 )

SO 2 Removal rate (%)

1 0.3 12920 92 2 0.4 9690 99 3 0.5 7752 99 4 0.6 6460 99

[0050] It can be seen that with the increase of acid seawater cleaning time, the desulfurization rate decreased.

[0051] see figure 2 , is a structural schematic diagram of a h...

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Abstract

A seawater desulfurization process and system for high-specific-surface-area ship flue gas are used for carrying out desulfurization treatment on flue gas discharged by a sulfur-containing ship diesel engine, and the seawater desulfurization process comprises the following steps: a high-specific-surface-area hydrophilic filler is loaded into a washing tower, and the seawater is sprayed into the washing tower from the upper part of the washing tower; the flue gas is injected into the lower part of the washing tower, the flue gas is in countercurrent contact with the seawater and the high-specific-surface-area hydrophilic filler in the washing tower, a desulfurization reaction is performed, and waste seawater and clean flue gas are obtained; the waste seawater is discharged from the bottom of the washing tower, and the clean flue gas is discharged from the top of the washing tower. According to the invention, the technical problem of poor desulfurization effect caused by large size of desulfurization equipment and complex desulfurization mode in the traditional desulfurization method is solved, and the process and system can be widely applied to the fields of ship waste gas treatment, energy conservation and environmental protection.

Description

technical field [0001] The application relates to the fields of ship waste gas treatment and energy saving and environmental protection, and in particular to a high specific surface area ship flue gas seawater desulfurization process and system. Background technique [0002] At present, 85% of the world's goods are transported by sea. There are about 380,000 ships with AIS positions in the world, and about 26,000 ships with more than 10,000 tons. There are 4,309 Chinese ships on international voyages, 1,345 ships over 10,000 tons, 6,103 ships controlled by Chinese shipowners, and 2,517 ships over 10,000 tons. There are 121,700 active ships in China in a week. Among the ships with a deadweight of more than 10,000 tons in the world, dry bulk carriers accounted for 38.85%, container ships accounted for 17.09%, and oil tankers accounted for 13.16%. Among these ships, the diesel engine ships fueled by heavy diesel oil have the largest number of ships. The technology of marine d...

Claims

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Application Information

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IPC IPC(8): B01D53/14B01D53/18B01D53/94B01D53/50
CPCB01D53/1481B01D53/1493B01D53/18B01D53/94B01D53/508B01D2252/1035B01D2255/802B01D2258/012
Inventor 刘昌豹李春虎李栋
Owner WEIHAI PUYI MARINE ENVIRONMENTAL TECH
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