Flue gas cooling system and method

Abstract

The invention discloses a smoke cooling system, and relates to a smoke cooling system and method used for an activated carbon or active coke dry desulfurization adsorption tower, aiming at providing the smoke cooling system and method for being capable of controlling the temperature of smoke entering the adsorption tower and preventing activated carbon or activated coke from generating a partial hot point. The smoke cooling system provided by the invention comprises a smoke cooler, an external air cooler, first and second temperature sensors and a first smoke pipe, wherein one end of the first smoke pipe is fixedly arranged on an air inlet of the adsorption tower; the air inlet of the adsorption tower is provided with an air inlet baffle, the other end of the first smoke pipe is communicated with a smoke discharge port, both the external air cooler and the smoke cooler are arranged on the first smoke pipe, and the smoke cooler is arranged between the external air cooler and the adsorption tower; the first temperature sensor is arranged between the external air cooler and the smoke cooler, the second temperature sensor is arranged between the smoke cooler and the adsorption tower, and the external air cooler is provided with the baffle capable of regulating the air input.

Description

technical field [0001] The invention relates to the field of desulfurization equipment, in particular to a system and method for cooling flue gas of an activated carbon or activated coke dry method desulfurization adsorption tower. Background technique [0002] Activated coke or activated carbon flue gas desulfurization technology belongs to the dry recovery desulfurization process, relying on the adsorption and analysis of sulfur dioxide by activated coke or activated carbon to complete the flue gas desulfurization cycle. Due to the spectral adsorption of activated coke or activated carbon, this technology can remove many harmful substances at the same time. In the desulfurization process, basically no water is consumed, no waste water and waste residue are generated, and it has excellent environmental protection performance. The desulfurization product is high-concentration sulfur dioxide gas, which can produce sulfuric acid, sulfur, liquid sulfur dioxide, fertilizer and ...

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Problems solved by technology

[0003] When an adsorption tower with activated coke or activated carbon is used to purify the ironmaking and sintering process for the purpose of metal manufacturing in ironworks, the flue gas generated and discharged during the combustion of fossil fuels (coal) in thermal power generation equipment, coke or its compounds In, or in the flue gas discharged from industrial / domestic waste incinerators, when the pollution source contained in the flue gas itself has a relatively high temperature, and the flue gas is reheated after being adiabatically compressed by the fan, when it enters the adsorption When the temperature of the flue gas in the tower exceeds 150°C, local hot spots will be generated in the activated carbon or activated coke in the adsorption tower. Activated coke fails or even burns, resulting in damage to the adsorption tower

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