Flue gas semi-dry desulfurization device and method

Abstract

The invention discloses a flue gas semi-dry desulfurization device and method. The device comprises a shell assembly, a desulfurization assembly, a dedusting assembly, a fan and a precipitation tank;the shell assembly comprises a shell, an air inlet pipe and an air outlet pipe; the air inlet pipe is fixedly connected with the shell and extends into the shell; the air outlet pipe is fixedly connected with the shell and away from the air inlet pipe. The desulfurization assembly comprises a desulfurizing agent box and a first spray head; the first spray head is fixedly connected with the desulfurizing agent box; the first spray head extends into the air inlet pipe, a fan and the shell are fixedly connected, and the first spray head penetrates through the air inlet pipe; the dedusting assembly comprises an induced draft pipe and an air pump; the induced draft pipe is fixedly connected with the shell, an air pump is fixedly connected with the induced draft pipe, a desulfurizing agent in the air inlet pipe is mixed with flue gas, then the mixture is blown out through the fan, generated solid particles move outwards due to centrifugal force and are downwards introduced into the precipitation tank through airflow of the air pump for precipitation, pure air is exhausted through the air outlet pipe, reheating is not needed, and thus the production cost is reduced.

Description

technical field [0001] The invention relates to the field of desulfurization equipment, in particular to a flue gas semi-dry desulfurization device and method. Background technique [0002] In the process of thermal power generation, burning coal will produce a large amount of sulfur oxides. These sulfur oxides are easily soluble in water. They coexist with water droplets and dust in the atmosphere. Due to the iron, manganese, etc. Catalyze oxidation to form sulfuric acid mist. In severe cases, soot-type smog events will occur, such as the London smog event, or acid rain. Therefore, the emission of sulfur oxides must be controlled. [0003] Among the technologies currently used, more than 90% of China's thermal power plants and steel mills use the wet lime / limestone-gypsum flue gas desulfurization process. Energy consumption, and frequent maintenance of energy supply equipment, increased production costs. Contents of the invention [0004] The object of the present inven...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a flue gas semi-dry desulfurization device and method, aiming to solve the problem of increased production cost caused by the low temperature of the treated gas in the prior art and the need for heating

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