CARBON DIOXIDE RECOVERY SYSTEM AND CARBON DIOXIDE SEPARATION RECOVERY SYSTEM

• Main Authors: IWASAKI HIDEKAZU, OKUMURA YUJI, NISHIBE SHOHEI, YOSHIZAWA KATSUHIRO
• Format: Patent
• Language: English; Japanese
• Published: 10.08.2017
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

PROBLEM TO BE SOLVED: To suppress a decrease in concentration of carbon dioxide recovered by a carbon dioxide holder.SOLUTION: A carbon dioxide recovery system comprises: a desorption tank that processes to make an absorbent desorb carbon dioxide; a carbon dioxide holder connected to the desorption tank via a carbon dioxide recovery tube; a pump that feeds the gas in the desorption tank to the carbon dioxide holder through the carbon dioxide recovery tube; and at least one or more pressure switching devices, having a hopper of at least at one stage, an inlet valve that opens and closes the hopper inlet, an outlet valve that opens and closes the hopper outlet, an exhaust tube connected to the hopper and exhausting the gas from the hopper, an exhaust valve that opens and closes the exhaust tube, an air supply tube connected to the hopper and supplying carbon dioxide into the hopper, and an air supply valve that opens and closes the air supply tube. One of pressure switching devices is provided above the absorbent inlet of the desorption tank and makes the hopper outlet communicate with the desorption tank.SELECTED DRAWING: Figure 1 【課題】二酸化炭素ホルダに回収される二酸化炭素の濃度の低下を抑制する。【解決手段】二酸化炭素回収システムが、吸着剤から二酸化炭素を脱着させる処理を行う脱着槽と、脱着槽と二酸化炭素回収管を介して接続された二酸化炭素ホルダと、脱着槽の気体を二酸化炭素回収管を通じて二酸化炭素ホルダへ送り出すポンプと、少なくとも１段のホッパ、ホッパの入口を開閉する入口バルブ、ホッパの出口を開閉する出口バルブ、ホッパと接続されてホッパから排気する排気管、排気管を開閉する排気バルブ、ホッパと接続されてホッパへ二酸化炭素を供給する給気管、及び、給気管を開閉する給気バルブとを有する、少なくとも１つの圧力切替装置とを備える。圧力切替装置のうちの一つは、脱着槽の吸着剤の入口の上方に設けられ、ホッパの出口が脱着槽と連通されている。【選択図】図１