The magical principle of seawater desulfurization: Why can seawater purify flue gas?

With environmental protection becoming increasingly important today, sulfur oxides (SO2) in chimney emissions have become a key monitoring target. In order to reduce the emission of these harmful gases, many countries have begun to adopt various desulfurization technologies, among which seawater desulfurization technology is particularly eye-catching. This technology uses the natural alkaline properties of seawater to not only effectively remove SO2, but also solve the problem of water resource reuse to a certain extent.

Seawater itself is an excellent desulfurizer. It can react with SO2 to eventually form sulfate, effectively reducing the impact on the environment.

The working principle of seawater desulfurization is mainly based on two aspects: on the one hand, seawater contains a large amount of bicarbonate and sulfate. When SO2 enters the seawater, it will react chemically with these substances and turn into harmless sulfate; on the other hand, the oxygen in seawater can promote the oxidation of SO2, further improving the desulfurization efficiency. In many of the latest flue gas treatment solutions, seawater is gradually replacing traditional alkaline substances such as limestone, showing amazing application potential.

Compared with traditional desulfurization technology, seawater desulfurization can not only achieve a sulfur removal rate of more than 90%, but also has the following significant advantages. First of all, seawater is inexhaustible and can reduce the cost of raw materials. Secondly, the use of seawater can reduce the burden of other desulfurizers on the environment, which is consistent with the current concept of sustainable development. Finally, the application of seawater desulfurization technology can further promote the integration of green energy and environmental protection technology and enhance society's awareness of protecting nature.

Studies have shown that the use of seawater desulfurization technology can save several power plants millions of dollars in emission costs each year, and the burden on the environment is also significantly reduced.

Looking back at history, as early as the 1920s, with the increase in power construction in the UK, the problem of SO2 in flue gas gradually attracted attention. Initially, desulfurization technology relied on the use of common materials such as limestone. Faced with increasingly stringent environmental regulations, energy companies were no longer satisfied with this and began to explore new desulfurization solutions. With the development of seawater desulfurization technology, this innovative method has gradually been incorporated into emission control actions, showing broad application prospects.

In terms of ship emission management, the International Maritime Organization (IMO) has also formulated corresponding guidelines for seawater desulfurization systems. This is not only to protect the marine ecology, but also an important part of controlling marine pollution on a global scale. Seawater desulfurization can be found in the discharge system of almost every commercial ship, and it will become standard operating procedure in the future.

It is worth noting that seawater desulfurization technology not only raises environmental awareness, but also conveys to society a new concept of coexistence of economy and environment.

With the advancement of technology, future seawater desulfurization systems will no longer be limited to a single seawater circulation mode, but will incorporate intelligent management to make the desulfurization process more efficient and accurate. In the exploration of clean energy, seawater desulfurization technology may become an important environmental protection tool. In this case, will future industrial emission management only need to rely on marine products?

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