Dry desulfurization agent for ships, preparation method thereof, and ship dry desulfurization process

Abstract

The invention discloses a dry desulfurization agent for ships, a preparation method thereof, and a ship dry desulfurization process, and belongs to the technical field of ship dry desulfurization. Thepreparation method comprises the following steps: mixing a component A and a component B according to a certain ratio; uniformly mixing the component A and the component B, adding water accounting for 20-60% of the total amount of the component A and the component B, uniformly mixing all the components, carrying out extrusion molding to from strips, activating the molded product at 60-120 DEG C for 2-12 hours, and drying the molded product at 120-200 DEG C for 2-12 hours to obtain the dry desulfurization agent for ships. Ship flue gas is fed from the bottom of a moving bed dry desulfurizationreactor, the ship flue gas is desulfurized by a dry desulfurization agent in the moving bed dry desulfurization reactor, and the desulfurized ship flue gas enters a chimney or a heat exchange systemfrom the upper part of the moving bed dry desulfurization reactor to take heat again. A moving bed process is adopted, a certain dust removal function is achieved, dust generated by heavy oil combustion can be effectively eliminated, an existing flue gas system of a ship is slightly changed, the desulfurization efficiency is high and is 90% or above, stability is achieved, and the influence of external factors is small.

Description

technical field [0001] The invention belongs to the technical field of ship dry desulfurization, and in particular relates to a ship dry desulfurizer, a preparation method thereof and a ship dry desulfurization process. Background technique [0002] Ship exhaust gas pollution mainly comes from fuel oil, and about 90% of the sulfur content in ship fuel oil is emitted in the form of sulfur dioxide. At present, there are three main measures to deal with sulfur emissions from ships: using low-sulfur oil, using LNG fuel instead of fuel oil, and installing ship desulfurization systems. The former two have not been widely used due to insufficient supply of low-sulfur fuel oil, fuel storage and transformation costs, etc. Now countries around the world usually adopt the latter measure to install ship desulfurization systems so that ships can use heavy fuel oil normally. [0003] On July 1, 2018, my country implemented the GB 3552-2018 "Ship Pollutant Discharge Standard", which stric...

AI Technical Summary

Problems solved by technology

However, the more complex process requires more operators, more equipment needs maintenance, and the equipment occupies a large area

In addition, a large amount of waste liquid will be generated during the desulfurization process, and a large amount of water-containing by-products will be produced. At the same time, there are certain problems in the utilization of by-products.

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