Device for absorbing ammonia in chemical tail gas

Abstract

The invention discloses an ammonia gas absorption device in chemical tail gas, which comprises an ammonia gas distribution pipe, a gas uniform plate, a stirring blade, a heat exchange coil and an ammonia gas absorption tank. The inner bottom of the ammonia gas absorption tank is horizontally installed with A gas-distributing plate, the ammonia gas absorption tank below the gas-distributing plate is provided with an ammonia gas distribution pipe, and the ammonia gas distribution pipe is connected to the vertically arranged ammonia gas delivery pipe, and a sponge is arranged in the ammonia gas absorption tank above the gas-distributing plate block, the ammonia absorption tank above the sponge block is provided with stirring blades, and a heat exchange coil is installed in the ammonia absorption tank outside the stirring blades, the stirring blades are installed on the rotating shaft, and the upper end of the rotating shaft is connected with the The motor is connected on the top, and the exhaust pipe is installed on the top of the ammonia gas absorption tank. The ammonia gas absorption device in the chemical tail gas can make the ammonia gas fully contact with water and be absorbed, which enhances the efficiency and effect of ammonia gas absorption, and timely Heat exchange occurs, the absorption rate of ammonia gas is improved, and the use effect is good.

Description

technical field [0001] The invention relates to the technical field of gas absorption devices, in particular to an ammonia gas absorption device in chemical tail gas. Background technique [0002] Ammonia is an inorganic compound. It is a colorless gas with a pungent odor at room temperature. It is easily soluble in water. When ammonia gas dissolves in water, ammonia molecules combine with water molecules to form ammonia water, which can generate ammonia ions with a small amount of electricity. and hydroxide ions, so ammonia water is weakly alkaline and can turn phenolphthalein solution red. The main function of ammonia gas is to make ammonium salt and nitrogen fertilizer. In chemical industry and non-ferrous metal smelting industry desulfurization, denitrification, dechlorination and other fields. The waste gas emitted by chemical industry contains a large amount of ammonia gas, if it is not treated effectively, it will cause serious pollution to the environment. [0003...

AI Technical Summary

Problems solved by technology

The waste gas emitted by chemical industry contains a large amount of ammonia gas. If it is not treated effectively, it will cause serious pollution to the environment.

[0003] Most of the existing ammonia gas absorption devices use the tank body to put water into it, and the ammonia gas pipeline is directly inserted into it for absorption. Since ammonia gas dissolves in water, a large amount of heat will be released. After the temperature of the ammonia solution rises, the solubility of ammonia becomes smaller, and the resulting ammonia concentration is low. , can not be recycled, as sewage treatment is difficult, but also increases the production cost

[0004] Chinese patent (authorized announcement number: CN203123780U) discloses a

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