Environmentally-friendly process with complete reaction in ammonia desulfurization device

Abstract

The invention discloses an environmentally-friendly process with a complete reaction in an ammonia desulfurization device. The process comprises the following steps: when the ammonia desulfurization device is used, boiler flue gas with a temperature of 120-150 DEG C is subjected to gas-solid separation by a first cyclone separator, a part of flue gas after gas-solid separation is subjected to desulfurization and oxidation treatment, after treatment is performed by a second cyclone separator, the treated gas flows into an evaporative dryer through a second circulation pump, the other part of the boiler flue gas with the temperature of 120-150 DEG C treated by the first cyclone separator is introduced into the evaporative dryer, the dried particulate matter obtained by the evaporative dryer enters an ammonium sulfate bin, and packaging treatment is performed by using an automatic packaging machine. According to the process provided by the invention, the first cyclone separator is arranged to separate dust in the boiler flue gas to prevent desulfurization efficiency for sulfur dioxide in the flue gas from being reduced, an ammonia concentration in ammonia water is controlled at 10%-20% to prevent the ammonia water concentration from being too high, if the ammonia water concentration is high, ammonia escapes, and if the ammonia water concentration is too low, desulfurization is incomplete, so that under the ammonia concentration condition, the desulfurization effect is good, and an ammonia escape phenomenon is inhibited; and the process has a novel structure and is convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of calciner flue gas desulfurization, and specifically relates to an environmentally friendly process with complete reaction in an ammonia desulfurization device. Background technique [0002] Flue gas is a mixture of gas and smoke, which is the main cause of air pollution in residential areas. The gaseous substance sulfur dioxide in the flue gas seriously pollutes the environment. With the rapid development of the level, the demand for high-temperature calciners is increasing. The flue gas discharged from the high-temperature calciner not only has a high concentration of sulfur dioxide, but also contains soot. The flue gas generated by the high-temperature calciner is directly discharged into the air, which is harmful to the environment. The pollution is serious, and the harm of sulfur dioxide and smoke to the human body is relatively large. [0003] In the existing ammonia desulfurization device, ammonia ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an environmentally friendly process with complete reaction in the ammonia desulfurization device, to solve the ammonia escape and aerosol phenomenon easily caused by the ammonia desulfurization proposed in the above background technology, and the temperature of the flue gas produced by the high-temperature calciner is not obtained. The question of fair use

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