EXHAUST GAS TREATMENT APPARATUS AND EXHAUST GAS TREATMENT METHOD FOR EXHAUST GAS TREATMENT APPARATUS

    公开(公告)号:EP4112154A1

    公开(公告)日:2023-01-04

    申请号:EP21863988.8

    申请日:2021-07-28

    摘要: To enable side products and soot coagulating on a configuration such as a circulation pathway or the like for a closed loop operation to be prevented from remaining. A scrubber (10) that obtains, as drainage water (a3), exhaust gas washing water (a1) that has absorbed a sulfur oxide, a supply pathway (20) that supplies the exhaust gas washing water to the scrubber, an introduction pathway (50) into which the drainage water from the scrubber is introduced, a drainage water treatment device (60) that performs a predetermined treatment on the drainage water from the introduction pathway, a circulation pathway (70) that supplies, as circulated water (a2) the drainage water treated by the drainage water treatment device to a supply pipe, valves (31, 75) that performs switching between supply of the exhaust gas washing water from the water supply pathway (30) and supply of the circulated water from the circulation pathway for the supply pathway, and a bypass pathway (80) that is caused to communicate with a side further upstream than the valves in the circulation pathway and an upstream side of the introduction pathway are included. It is possible to form a closed pathway with the introduction pathway, the circulation pathway, and the like for the closed loop operation via the bypass pathway and to wash the closed pathway with circulated washing water (a4) during the open loop operation.

    EXHAUST GAS TREATMENT DEVICE
    16.
    发明公开

    公开(公告)号:EP4066920A1

    公开(公告)日:2022-10-05

    申请号:EP21846365.1

    申请日:2021-05-24

    发明人: ENAMI, Yoshiaki

    摘要: Provided is an exhaust gas treatment apparatus including: a reaction tower having an exhaust gas inlet port into which exhaust gas is introduced and an exhaust gas outlet port from which the exhaust gas is discharged and that is supplied with a liquid for treating the exhaust gas; and one or a plurality of swirl units that are provided inside the reaction tower and provided between the exhaust gas inlet port and the exhaust gas outlet port and configured to cause the exhaust gas to be swirled, in which the swirl unit has an outer cylinder, and a spiral plate that is provided in a cavity portion inside the outer cylinder, the spiral plate being obtained by twisting a flat plate, and a length of one side of the flat plate is equal to a width of the cavity portion in a direction intersecting an extension direction of the outer cylinder.

    CO2 CAPTURE PROCESS WITH ELECTROLYTIC REGENERATION

    公开(公告)号:EP3995204A1

    公开(公告)日:2022-05-11

    申请号:EP20206242.8

    申请日:2020-11-06

    申请人: Estech A/S

    IPC分类号: B01D53/62 B01D53/78 B01D53/96

    摘要: A method of scrubbing a gas, such as flue gas or exhaust gas, comprising carbon dioxide to deplete the gas of carbon dioxide (CO 2 ), the method comprising the steps of:
    - scrubbing the gas in a scrubber (210) with a first alkaline, aqueous scrubbing liquid to dissolve carbon dioxide (CO 2 ) as hydrogen carbonate (HCO 3 - ) and/or as carbonate (CO 3 2- ) in the first alkaline, aqueous scrubbing liquid, thereby providing a first spent aqueous scrubbing liquid comprising hydrogen carbonate (HCO 3 - ) and/or carbonate (CO 3 2- ), the first spent aqueous scrubbing liquid having a pH from about 7 to about 9;
    - feeding the first spent aqueous scrubbing liquid to an anode chamber of an electrolytic cell (310) comprising the anode chamber (313) and a cathode chamber (312) separated by a membrane (311);
    - regenerating the first spent aqueous scrubbing liquid in the electrolytic cell (310) by electrolysis, the electrolysis increasing the pH of the first spent aqueous scrubbing liquid in the cathode chamber (312), the electrolysis further depleting the first spent aqueous scrubbing liquid of hydrogen carbonate (HCO 3 - ) and of carbonate (CO 3 2- ) in the anode chamber (313) by decreasing the pH, the regeneration further comprising generating gaseous hydrogen in the cathode chamber (312) and a gaseous mixture of oxygen and carbon dioxide (CO 2 ) in the anode chamber (313) by electrolysis; and
    - withdrawing regenerated alkaline, aqueous scrubbing liquid from the cathode chamber (312) and re-circulating it to the scrubber (210);
    wherein:
    - the gaseous hydrogen is withdrawn from the cathode chamber (312); and
    - the gaseous mixture of oxygen and carbon dioxide is withdrawn from the anode chamber (313).

    ARRANGEMENT AND METHOD FOR TRANSFERRING HEAT FROM A WET SCRUBBER TO A DISTRICT HEATING NETWORK

    公开(公告)号:EP3875165A1

    公开(公告)日:2021-09-08

    申请号:EP21159459.3

    申请日:2021-02-26

    发明人: NUMMILA, Mika

    摘要: The present invention relates to an arrangement for transferring heat. The arrangement comprises a wet scrubber (101) configured to transfer heat from waste gas to scrubbing liquid, a first heat exchanger (104) having a first side coupled to the wet scrubber (101) and a second side coupled to a return side and a supply side of a district heating network, means for conveying scrubbing liquid from the wet scrubber (101) through the first side of the first heat exchanger (104) to the wet scrubber (101), a heat accumulator (107) containing heat storage liquid, and a second heat exchanger (108) having a first side coupled to a top part and a bottom part of the heat accumulator (107) and a second side coupled to the return side and the supply side of the district heating network. The invention also relates to a method for transferring heat.