Magnesium method ship exhaust gas desulfurization and carbon sequestration integrated system and method
A technology for desulfurization of waste gas and ships, applied in chemical instruments and methods, gas treatment, separation methods, etc., can solve problems such as low reaction rate, achieve the effect of solving the problem of safe storage, reducing the volume of the device and the complexity of the system
Active Publication Date: 2021-11-30
DALIAN MARITIME UNIVERSITY
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The reaction of carbon dioxide and magnesium hydroxide to produce magnesium carbonate is an exothermic process that proceeds spontaneously and has thermodynamic advantages, but at a lower rate of reaction
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[0040] The following non-limiting examples can enable those skilled in the art to understand the present invention more fully, but do not limit the present invention in any way.
[0041]An integrated system for desulfurization and carbon fixation of marine exhaust gas by magnesium method, the structure is as follows figure 1 As shown, it includes comprehensive washing tower 2, seawater pump 3, solid-liquid separator I4, desulfurization circulation pool 5, solid-liquid separator II7, aeration oxidation tank 8, oxidation fan 9, decarbonization circulation pool 10, regeneration reaction pool 12 , Solid-liquid separator III13, cooling crystallizer 14, storage tank I15, storage tank II16, storage tank III17, storage tank IV18, storage tank V19, regulating valve I20 and regulating valve II21;
[0042] The comprehensive washing tower 2 is followed by the exhaust gas inlet 1, the Venturi washing and dust removal area 2.1, the desulfurization absorption area 2.2, the liquid receiving b...
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The invention belongs to the field of ship waste gas treatment, and particularly relates to a magnesium method ship exhaust gas desulfurization and carbon sequestration integrated system and method. The system comprises a comprehensive washing tower, a seawater pump, a solid-liquid separator I, a desulfurization circulating pool, a solid-liquid separator II, an aeration oxidation pool, a decarburization circulating pool, a regeneration reaction pool, a solid-liquid separator III, a cooling crystallizer, a storage tank I and a storage tank II; the dedusting washing liquid is seawater, the desulfurization absorption liquid is magnesium hydroxide, the decarburization absorption liquid is an alcohol amine or amino acid salt solution, the decarburization pregnant solution is chemically regenerated by magnesium hydroxide and a desulfurization byproduct magnesium sulfate in the regeneration reaction tank to recover the absorption capacity, and the absorbed carbon dioxide is mineralized into magnesium carbonate to be sealed and stored. Magnesium hydroxide and desulfurization by-products are used for solidifying carbon dioxide, desulfurization and carbon sequestration are organically combined, the desulfurization and carbon sequestration processes of ship waste gas are integrated in the same absorption tower, and the device size and the system complexity are greatly reduced.
Description
technical field [0001] The invention belongs to the field of ship waste gas treatment, and in particular relates to an integrated system and method for desulfurization and carbon fixation of ship waste gas by magnesium method. Background technique [0002] Shipping carries 90% of the world's trade volume, but at the same time creates serious environmental problems. With the successive introduction of international conventions and related planning documents regulating environmental pollution from ships and reducing consumption and emissions, and the standards and norms are becoming increasingly stringent, green and low-carbon has become an inevitable trend in the development of the shipping industry. The previous International Maritime Organization (IMO) conventions on limiting emissions of sulfur oxides and nitrogen oxides from ships have come into effect globally or in some sensitive areas, and exhaust gas post-treatment technology has been proven to be an effective means o...
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IPC IPC(8): B01D53/92B01D53/50B01D53/62
CPCB01D53/92B01D53/507B01D53/62B01D2257/504B01D2258/012Y02A50/20
Inventor 朱益民唐晓佳樊铭鹏田悦李战
Owner DALIAN MARITIME UNIVERSITY