Flue gas desulfurization apparatus

Abstract

The invention discloses a flue gas desulfurization apparatus, which comprises a tower body, wherein the tower body comprises a flue gas inlet zone and a desulfurization zone inside, the flue gas inletzone and the desulfurization zone are communicated, a flue gas outlet is arranged on the top portion of the tower body, a flue gas inlet assembly and a washing liquid outlet assembly are arranged inthe flue gas inlet zone, the flue gas inlet assembly comprises a flue gas inlet pipe and an outlet flow guide pipe, the outlet flow guide pipe is sealed on the pipe wall of the flue gas inlet pipe, one end of the flue gas inlet pipe is communicated to the interior of the tower body through the outlet flow guide pipe, the other end of the flue gas inlet pipe extends out of the bottom end of the tower body, and is communicated to a main host machine flue gas pipeline and an auxiliary machine flue gas pipeline, the washing liquid outlet assembly comprises a release port, a first liquid level detection assembly and an overflow port, the release port, the first liquid level detection assembly and the overflow port are arranged on the tower body from bottom to top, the release port is used for discharging the washing liquid in the tower body, the first liquid level detection assembly is used for detecting the liquid level of the washing liquid, and the height of the overflow port is lower than the height of the outlet flow guide pipe. According to the present invention, by detecting the height of the washing liquid with the first liquid level detection assembly, the washing liquid can beprevented from flowing backward into the host machine and the auxiliary machine so as to ensure the normal operation of the host machine and the auxiliary machine.

Description

technical field [0001] The invention relates to the technical field of flue gas desulfurization, in particular to a flue gas desulfurization device. Background technique [0002] In order to reduce the impact of sulfur dioxide in ship flue gas on the atmospheric environment, it is necessary to control the content of sulfur dioxide in the discharged flue gas to meet the sulfur emission requirements. There are currently three measures to reduce the sulfur dioxide content in flue gas: use low-sulfur fuel oil, use clean fuels such as liquefied natural gas, and install flue gas desulfurization systems on ships. So far, the low-sulfur fuel oil available on the market is mainly obtained by blending methods. Considering the instability of low-sulfur fuel oil and the difference in performance of different batches of fuel oil, there are certain risks to the safe operation of the main engine. The initial investment of the liquefied natural gas solution is high, and the liquefied natur...

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Problems solved by technology

However, when the flue gas enters the tower body from the bottom, a small part of the washing liquid will also be poured into the exhaust pipe of the main engine and auxiliary equipment through the flue gas inlet at the bottom, thus affecting the safe operation of the main engine and auxiliary equipment.

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