CN-122006427-A - Modularized quick-dismantling absorption tower and online maintenance method thereof

CN122006427ACN 122006427 ACN122006427 ACN 122006427ACN-122006427-A

Abstract

The invention discloses a modularized quick-dismantling absorption tower and an online maintenance method thereof, wherein the absorption tower comprises a tower body, at least one layer of drawer type flat membrane box unit arranged along the axial direction of the tower body, a membrane box supporting component for supporting each layer of drawer type flat membrane box unit, a liquid supply component arranged above each layer of drawer type flat membrane box unit, and a shutter type fluid regulation component arranged between the liquid supply component and the drawer type flat membrane box unit. The membrane box supporting component can regulate the airflow channel in the tower and eliminate the gas bypass effect. When the shutter type fluid regulating and controlling component operates normally, the blades are opened to assist in liquid distribution, closing to form a liquid interception barrier during maintenance and leading liquid to the side of the membrane tank. The device solves the problems of potential safety hazard and gas leakage in the process of online replacement of the module through mechanical isolation while retaining the advantages of low pressure drop and high flux mass transfer, and realizes online maintenance without shutdown.

Inventors

YANG QIANG
ZHANG GUANGYAO
HAN XIN
LIU ZIHAO
LI YU
LIU BO
WANG NING

Assignees

华东理工大学

Dates

Publication Date: 20260512
Application Date: 20260416

Claims (10)

1. The utility model provides a modularization quick detach absorption tower, its characterized in that, the absorption tower includes the tower body, follows the axial at least one deck drawer type dull and stereotyped membrane case unit of tower body setting, be used for supporting each deck drawer type dull and stereotyped membrane case unit's membrane case supporting component, the confession liquid subassembly of setting in every layer of drawer type dull and stereotyped membrane case unit top to and set up the tripe formula fluid regulation and control subassembly between confession liquid subassembly and the drawer type dull and stereotyped membrane case unit, wherein: The drawer type flat membrane box unit comprises a main body frame and a flat membrane component arranged in the main body frame, wherein the flat membrane component consists of a plurality of vertically arranged flat plates; the shutter type fluid regulating and controlling assembly is used for regulating and controlling the conduction or cutoff of the incoming fluid above and comprises a plurality of guide vanes and a wall penetrating driving mechanism used for driving the guide vanes to rotate; The membrane box supporting assembly comprises a plugging plate and rails matched with the walking assembly, through holes corresponding to the flat membrane assemblies are formed in the plugging plate, and the rails are arranged on two sides of the through holes; the side wall of the tower body is provided with a disassembly and assembly opening at a position corresponding to each layer of drawer type flat membrane box unit.
2. The modular quick release absorber of claim 1, wherein the guide vanes are V-shaped or arc-shaped structures, each comprising a first vane and a second vane; The guide vane comprises a plurality of axisymmetric guide vanes and a non-axisymmetric guide vane which is arranged close to the dismounting opening; the lengths of the first blade and the second blade of the axisymmetric guide blade are equal; The length of the second blade of the non-axisymmetric guide blade is 1/4-1/3 of the length of the first blade.
3. The modular quick release absorber of claim 2, wherein in an operational mode, the openings of the axisymmetric guide vanes face to the right in a side-by-side arrangement, and the openings of the non-axisymmetric guide vanes face downward to form a clear liquid flow path; In the maintenance mode, the openings of the axisymmetric guide vanes face downwards, the openings of the non-axisymmetric guide vanes face leftwards, the adjacent guide vanes are mutually abutted, and a continuous wave-shaped liquid-intercepting shielding layer is formed above the drawer type flat membrane box unit.
4. The modularized quick-release absorption tower according to claim 2, wherein the through-wall driving mechanism comprises a linkage connecting rod which is positioned in the tower body and used for connecting each guide vane, a sealing transmission shaft which penetrates through the side wall of the tower body, and a maintenance operation handle which is arranged on the outer wall of the tower body, wherein the inner end of the sealing transmission shaft is connected with the linkage connecting rod, and the outer end of the sealing transmission shaft is connected with the maintenance operation handle.
5. The modular quick release absorption tower according to claim 2, wherein the plugging plate is provided with a plurality of drain holes, and a one-way drain valve is arranged in each drain hole.
6. The modular quick-dismantling absorption tower according to claim 2, wherein a film box unit sealing assembly is arranged at the front end of the drawer type flat film box unit, and comprises a front end panel body, an operation handle arranged at the outer side of the front end panel body, a panel sealing gasket and a positioning guide wedge block arranged at the inner side of the front end panel body, wherein the positioning guide wedge block is arranged at the upper side and the lower side of the front end panel body; the tower body is provided with wedge-shaped matching grooves matched with the positioning guide wedge blocks at the upper side and the lower side of the disassembly opening, and quick locking buckles are arranged at the left side and the right side of the disassembly opening.
7. The modular quick release absorption tower of claim 1, further comprising an intelligent feedback control system comprising pressure detectors disposed on upper and lower sides of each drawer type flat membrane tank unit for monitoring pressure drop changes; the top of the tower body is provided with an air outlet, and the bottom of the tower body is provided with a liquid tank; The intelligent feedback control system also comprises a gas concentration detector arranged at the gas outlet and a liquid monitor arranged at the liquid tank.
8. The modular quick release absorber of claim 7, further comprising a fluid delivery and control system comprising a liquid supply manifold and a plurality of liquid supply branches, each liquid supply branch being provided with a corresponding spray control valve, the liquid supply manifold being in communication with the liquid tank, liquid supply branches, the liquid supply branches being in communication with a liquid supply assembly.
9. An on-line maintenance method using the modular quick-dismantling absorption tower as described in any one of claims 1 to 8, which comprises the steps of: s1, monitoring pressure drop change of each drawer type flat membrane box unit, and judging that a certain layer is a fault layer when the pressure drop of the certain layer is abnormal; S2, closing a liquid supply assembly corresponding to the drawer type flat membrane box unit of the fault layer, and then driving a guide vane above the fault layer to switch to an overhaul mode through a wall-penetrating driving mechanism, so that the guide vane is closed to cut off upper-layer falling liquid, and the liquid is guided to flow downwards from the side of the drawer type flat membrane box unit and falls into a plugging plate; S3, after residual liquid in the drawer type flat membrane box unit of the barrier layer is drained, horizontally moving the failed drawer type flat membrane box unit out of the tower body by using a traveling assembly; S4, resetting the shutter type fluid regulating and controlling component to an operation mode and restarting the liquid supply component.
10. The on-line maintenance method of a modular quick release absorber of claim 9, wherein in steps S2-S4, the spray flow rate of the remaining operation level liquid supply modules is adjusted to compensate for mass transfer efficiency losses due to a shut down of the barrier layer.

Description

Modularized quick-dismantling absorption tower and online maintenance method thereof Technical Field The invention belongs to the technical field of chemical gas-liquid mass transfer equipment, in particular relates to a gas-liquid contact device for acid gas purification, tail gas treatment and other processes, and particularly relates to a modularized quick-dismantling absorption tower and an online maintenance method thereof. Background The absorption tower is core equipment in the processes of natural gas desulfurization, flue gas decarburization and industrial tail gas purification. The internal components of the traditional absorption tower are usually fixed in the tower body by adopting welding, bolting and the like to form a rigid integral structure. In the long-term operation process, the structural form has obvious maintenance limitation that once the mass transfer component of the core of the tower is subjected to local scale deposition, blockage or corrosion damage, the whole tower is often required to be stopped, emptied, replaced and manually overhauled. This not only results in production interruption, with a great economic loss, but also limited space operation presents a safety risk. In the prior art, the installation and maintenance of the absorption tower are mainly focused on the rapid construction of the tower body or the hoisting and replacement of specific parts. The patent CN119550012A discloses a method for replacing a main spray pipe at the top layer of an absorption tower, which comprises the steps of arranging a movable trolley, a guide rail and a rotary tray, and moving the damaged main pipe out of the tower by utilizing the cooperative operation of a plurality of hoisting hoists. Although the method solves the difficult problem of replacing a specific large part to a certain extent, the method has the technical defects of complex construction process, long preparation period, necessity of stopping the whole tower, emptying and replacing, and the like. Patent CN106593065A discloses a method for quickly installing a tower body, which adopts a hydraulic lifting device and a flip-chip technology to realize synchronous and quick assembly of the tower body and a flue gas outlet pipeline. The technology solves the problems of large-scale construction and construction efficiency of the absorption tower in the construction stage, but does not improve the convenience of operation and maintenance after the tower is built and put into operation. Once the mass transfer component of the core in the tower is subjected to local scale deposit, blockage or breakage, the whole tower still needs to be shut down for maintenance due to an integral or semi-permanent fixed connection mode, the disassembly process is tedious and time-consuming, and the annual operation time and economic benefit of the device are seriously affected. In summary, the existing absorber technology has the technical problems that the replacement difficulty of internal components is high, the maintenance period is long, and local on-line maintenance cannot be realized. Therefore, developing an absorption tower device with standardized structure and rapid interface, and capable of independently replacing a fault unit while maintaining the operation of the tower body is a technical problem to be solved in the field. Disclosure of Invention Aiming at the technical problems that in the prior art, the maintenance of the internal components of the absorption tower requires the whole tower to stop, the potential safety hazard of online maintenance of liquid spraying exists in the traditional modularized design, and the like, the invention provides a modularized quick-dismantling absorption tower and an online maintenance method thereof. The device realizes on-line maintenance of local layers under the continuous operation working condition of the tower body by arranging a fluid regulating and controlling component and a membrane box supporting component which are mechanically linked between layers. In order to achieve the above purpose, the invention adopts the following technical scheme: In a first aspect, a modularized quick-dismantling absorption tower is provided, the absorption tower comprises a tower body, at least one layer of drawer type flat membrane box unit axially arranged along the tower body, a membrane box supporting component for supporting each layer of drawer type flat membrane box unit, a liquid supply component arranged above each layer of drawer type flat membrane box unit, and a shutter type fluid regulation component arranged between the liquid supply component and the drawer type flat membrane box unit, wherein: The drawer type flat membrane box unit comprises a main body frame and a flat membrane component arranged in the main body frame, wherein the flat membrane component consists of a plurality of vertically arranged flat plates; The shutter type fluid regulating and controlling assembly is used for regul