High-efficiency carbon-absorbing tower

Abstract

The invention discloses main equipment: a high-efficiency carbon-absorbing tower, for recovering low-content CO2 of flue gas of a cane sugar factory boiler to be applied to a modified sugar manufacturing process by a sulfurous acid method. The high-efficiency carbon-absorbing tower comprises a tower shell, a boiler flue gas extraction and discharge system, a filling system, a spraying absorption system device, a demister system device, a cleaning system device, a monitoring system and a material conveying system. The high-efficiency carbon-absorbing tower is a high-efficiency forced absorption reactor; the utilization ratio of carbon dioxide is increased more quickly when compared with that of the traditional natural saturation equipment; a structure in the tower is designed innovatively and optimally, so that the gas liquid mixing ratio and the retention time are reasonable, the low-content carbon dioxide is gathered by the high-efficiency carbon-absorbing tower and reacts with lime milk to form calcium carbonate solution, emission is reduced, and the carbon dioxide can be recovered to be applied to an improved traditional sugar manufacturing process by the sulfurous acid method. The high-efficiency carbon-absorbing tower is characterized in that the structure is simple; the mounting is convenient; airflow resistance is small; the carbon dioxide is easy to gather and absorb; is the maintance is convenient;, the operation is reliable; the cost is low; the recovery rate of the carbon dioxide is high.

Description

technical field [0001] The invention relates to a main equipment for an innovative process of recovering low-content carbon dioxide from boiler flue gas in a sugarcane sugar factory, in particular, it adopts an equipment for forced gas-liquid high-efficiency mixed absorption reaction, that is, a high-efficiency carbon absorption tower. Background technique [0002] The sugar cane sugar production process includes two processes: sulfurous acid method and carbonic acid method. Among them, in the sulfurous acid method, since the colloid, polyphenols, iron ions and other non-sugar impurities in the sugar juice are difficult to remove, the clarification efficiency is relatively low. Carbonated sugar process is low. Therefore, the quality of sugar products produced by the sulfite sugar production process is slightly worse than that of the carbonation sugar production process. [0003] At present, lime and sulfur dioxide are used as clarifiers in the sulfite sugar production proce...

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Problems solved by technology

[0005] In order to change the status quo of low-quality white granulated sugar produced by the sulfite sugar production process and the high production cost of white granulated sugar as soon as possible, the recovery of a large amount of carbon dioxide contained in the boiler flue gas of the sugar cane sugar factory is applied to the sulfite process sugar production process to replace part Sulfur, phosphoric acid and filling cane juice or syrup, using the current traditional natural filling equipment, the equipment investment is large, the utilization rate of carbon dioxide is not high, and the expected clarification effect cannot be achieved

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