High-gravity device and energy-optimized high-gravity decarbonization system

Patent metadata

Field	Value
Publication number	US-2025170588-A1
Application number	US-202418889750-A
Country	US
Kind code	A1
Filing date	Sep 19, 2024
Priority date	Nov 29, 2023
Publication date	May 29, 2025
Grant date	—

Abstract

The present invention provides a high-gravity device and an energy-optimized high-gravity decarbonization system, the high-gravity device comprises a housing, having a cavity therein; a solution inlet, a solution outlet, a gas inlet, and a gas outlet are provided on the housing; a rotating shaft, a packing, a packing lower clamping plate, and a packing upper clamping plate are provided in the cavity; wherein, the packing arranged between the two clamping plates is trapezoidal in section and is symmetrically placed on both sides of the rotating shaft; the packing upper clamping plate has a certain inclination angle, and an annular bulge is provided on the packing lower clamping plate; one end of the rotating shaft is arranged in the cavity, and another end extends out of the housing and is further connected to a driving mechanism; and, spray pipes are provided on both sides of the rotating shaft and are connected to the solution inlet.

First claim

1 . A high-gravity device, comprising:
a housing, having a cavity therein, wherein a rotating shaft, a packing, a packing lower clamping plate and a packing upper clamping plate are provided in the cavity; and, a solution inlet, a solution outlet, a gas inlet and a gas outlet are provided on the housing; wherein the packing upper clamping plate is provided with a certain inclination angle, the packing arranged between the packing upper clamping plate and the packing lower clamping plate is trapezoidal in section; and, an annular bulge is arranged on the packing lower clamping plate; one end of the rotating shaft is arranged in the cavity, and another end of the rotating shaft extends out of the housing and is connected with a driving mechanism; and the packing is symmetrically arranged on both sides of the rotating shaft, spray pipes are provided on the both sides of the rotating shaft, and the spray pipes are connected with the solution inlet.

2 . The high-gravity device according to claim 1 , wherein a static disk is symmetrically arranged on an inner wall of the housing, a movable disk is symmetrically arranged on the rotating shaft, the movable disk is arranged under the static disk, solution on the inner wall of the housing flows into an inner ring of the movable disk through an upper surface of the static disk under an action of gravity, then is thrown out from an outer ring of the movable disk under an action of centrifugal force, and then is finally led out from the solution outlet.

3 . The high-gravity device according to claim 1 , wherein an axial height of the packing is obtained by calculating an average residence time of the solution; wherein the axial height of the packing is the length of a short base of the trapezoid of the packing in section.

4 . The high-gravity device according to claim 3 , wherein the average residence time of the solution is derived from a solution holdup rate.

5 . The high-gravity device according to claim 1 , wherein the gas inlet is used for introducing gas to be purified, the gas to be purified enters the packing from an outer edge of the rotating shaft under an action of gas pressure, and contacts with the solution in countercurrent and transfers mass and heat, then a purified gas leaves the rotating shaft from a center of the rotating shaft and is finally led out from the gas outlet.

6 . The high-gravity device according to claim 1 , wherein a portion of the rotating shaft extending out of the housing is connected to the housing by a bearing seal.

7 . An energy-optimized high-gravity decarbonization system, comprising:
a first high-gravity device, a rich amine solution tank, a lean/rich solution heat exchanger, a steam-rich solution heat exchanger, a steam-cooling water heat exchanger, a lean amine solution-cooling water heat exchanger, a tubular falling-film reboiler, a gas-solution separator, a second high-gravity device, a lean amine solution tank, and a CO 2 -water separator; wherein, the first high-gravity device and the second high-gravity device both are the high-gravity device according to claim 1 ; wherein the first high-gravity device is connected to an uppermost end of an outer wall of the rich amine solution tank; a rich amine solution is outputted from a bottom of the rich amine solution tank and is delivered to the lean/rich solution heat exchanger; a rich solution outlet of the lean/rich solution heat exchanger is connected to a rich solution inlet of the steam-rich solution heat exchanger, and a rich solution outlet of the steam-rich solution heat exchanger is connected to a solution inlet of the tubular falling-film reboiler; a molecular sieve regeneration solid catalyst is added on a path through which a solution in the tubular falling-film reboiler flows; a material outlet of the tubular falling-film reboiler is connected to the gas-solution separator, a solution in the gas-solution separator is delivered to a solution inlet of the second high-gravity device, and a steam in the gas-solution separator is introduced into a gas inlet of the second high-gravity device; a mixed gas of CO 2 and steam is delivered from a gas outlet of the second high-gravity device into the steam-rich solution heat exchanger, and then is led into the steam-cooling water heat exchanger after heat exchange; and a condensed water output from a bottom of the CO 2 -water separator is delivered to the lean amine solution tank, a solution outlet of the second high-gravity device is connected to the lean amine solution tank, a lean solution collected in the lean amine solution tank from the second high-gravity device is delivered to the lean/rich solution heat exchanger for heat exchange, further is cooled via the lean amine solution-cooling water heat exchanger, and finally is delivered to the first high-gravity device as an absorption solution.

8 . The energy-optimized high-gravity decarbonization system according to claim 7 , wherein the lean solution heat exchanger, the steam-rich solution heat exchanger, the steam-cooling water heat exchanger, and the lean amine solution-cooling water heat exchanger are all printed circuit heat exchangers (PCHE).

9 . The energy-optimized high-gravity decarbonization system according to claim 7 , wherein an inlet of a rich amine solution pump is connected to a bottom of the rich amine solution tank and an outlet of the rich amine solution pump is connected to the lean/rich solution heat exchanger via a rich amine solution regulating valve.

10 . The energy-optimized high-gravity decarbonization system according to claim 7 , wherein a flue gas blower is connected to a gas inlet of the first high-gravity device.

11 . The energy-optimized high-gravity decarbonization system according to claim 7 , wherein a steam blower is connected to the gas outlet of the second high-gravity device, for delivering the mixed gas of CO 2 and steam into the steam-rich solution heat exchanger.

12 . The energy-optimized high-gravity decarbonization system according to claim 7 , wherein an inlet of a condensate pump is connected to a bottom of the CO 2 -water separator, to deliver the condensate water to the lean amine solution tank.

13 . The energy-optimized high-gravity decarbonization system according to claim 7 , wherein the lean solution is delivered to the lean solution heat exchanger by a lean solution pump for heat exchange.

Assignees

• Univ China Petroleum East China

Inventors

• Zhu Jianlu
• Li Yuxing
• Li Nan
• Hu Qihui
• Wang Wuchang
• Han Hui

Classifications

• B01D53/18

  Absorbing units; Liquid distributors therefor (B01D3/16, B01D3/26, B01D3/30 take precedence; packing elements B01J19/30, B01J19/32) · CPC title

• B01D53/1475 Primary

  Removing carbon dioxide · CPC title

• B04B15/02

  for cooling, heating, or heat insulating · CPC title

• B04B5/0442 Primary

  with means for adding or withdrawing liquid substances during the centrifugation, e.g. continuous centrifugation · CPC title