Carbon dioxide recovery device and carbon dioxide recovery method
A carbon dioxide recovery device technology, applied in chemical instruments and methods, separation methods, inorganic chemistry, etc., can solve problems such as the decline of carbon dioxide absorption performance and the decline of carbon dioxide recovery rate
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no. 1 approach
[0070] First, use figure 1 The carbon dioxide recovery device and the carbon dioxide recovery method in the first embodiment of the present invention will be described.
[0071] Such as figure 1 As shown, the carbon dioxide recovery device 1 includes: an absorption tower 20 for absorbing the carbon dioxide contained in the waste gas 2 in the absorption liquid; to regenerate. The waste gas 2 obtained by absorbing carbon dioxide in the absorption liquid in the absorption tower 20 is discharged from the absorption tower 20 as a decarbonated waste gas 3 . Then, carbon dioxide is discharged from regeneration tower 30 as carbon dioxide-containing gas 7 (carbon dioxide-containing steam) together with steam. In addition, the exhaust gas 2 supplied to the absorption tower 20 is not particularly limited, and may be, for example, combustion exhaust gas or process exhaust gas of a thermal power plant boiler (not shown), and may be supplied to the absorption tower 20 after being cooled ...
no. 2 approach
[0118] Second, use figure 2 A carbon dioxide recovery device and a carbon dioxide recovery method in a second embodiment of the present invention will be described.
[0119] exist figure 2 In the second embodiment shown, the main difference is that the control unit adjusts the pressure in the first gas-liquid separator and the pressure in the second gas-liquid separator, and other structures are the same as figure 1 The first embodiment shown is substantially the same. In addition, in figure 2 in, right with figure 1 The parts that are the same as those in the first embodiment shown are given the same reference numerals, and detailed description thereof will be omitted.
[0120] Such as figure 2 As shown, the first condensed water 12 supplied from the first gas-liquid separator 41 and the second condensed water 14 supplied from the second gas-liquid separator 46 are recovered as adjustment liquid 16 and stored in the adjustment liquid tank 52 .
[0121] The carbon di...
no. 3 approach
[0134] Second, use image 3 A carbon dioxide recovery device and a carbon dioxide recovery method in a third embodiment of the present invention will be described.
[0135] exist image 3 In the third embodiment shown, the main difference is that the outlet temperature of the first cooler and the outlet temperature of the second cooler are adjusted based on the flow rate of the adjustment liquid recovered to the adjustment liquid tank and the flow rate of the adjustment liquid supplied to the absorption tower. The outlet temperature and the outlet temperature of the cooler for cleaning, other structures and figure 1 The first embodiment shown is substantially the same. In addition, in image 3 in, right with figure 1 The parts that are the same as those in the first embodiment shown are given the same reference numerals, and detailed description thereof will be omitted.
[0136] Such as image 3 As shown, the carbon dioxide recovery device 1 according to the present embo...
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