CN-121627147-B - Capacitor desalting device

CN121627147BCN 121627147 BCN121627147 BCN 121627147BCN-121627147-B

Abstract

The invention belongs to the field of industrial water treatment, and relates to a capacitor desalination device, which is characterized in that a cylindrical shell and an integral injection molding end plate are combined with a structural design of a carbon-based electrode assembly, a dispersion plate with controllable flow guide channels and uniformly staggered water guide holes are matched, so that uniform distribution and efficient water collection of water inlet are realized, a water flow path is optimized, the water flow path is ensured to fully flow through an electrode gap, ions in water are efficiently removed under the driving of an electric field, a chemical reagent is not needed in a regeneration process, the regeneration process can be completed only through electrode short circuit, secondary pollution is avoided, and the module has strong adaptability to high-salt-content raw water, and the operation stability, the energy efficiency ratio and the engineering applicability of a capacitor desalination system are remarkably improved.

Inventors

YANG BAOLIANG
SHI JUN
LANG LIMENG
GUO HONGFEI
XU XIAN
Mo Yunli
LI XIAOHAN

Assignees

浙江安耐杰科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260203

Claims (8)

1. A capacitive desalination device, characterized in that the capacitive desalination device comprises: The cylindrical shell (1) comprises a first hollow cylindrical shell and a second hollow cylindrical shell, wherein the second hollow cylindrical shell is sleeved in the first hollow cylindrical shell, and a cavity for accommodating the electrode assembly and a water guide channel are formed by the first hollow cylindrical shell and the second hollow cylindrical shell, and the water guide channel is internally provided with a water guide hole; The circular dispersing plate (3) is arranged on the end face of the cylindrical shell, a flow guide channel (9) connected with the water inlet is arranged in the dispersing plate, the flow guide channel is designed to radially extend from the center to the periphery and is used for uniformly distributing water into the water guide channel, two end sealing end plates (2, 21), one end sealing end plate is arranged on one side of the circular dispersing plate far away from the cylindrical shell and the other end sealing end plate is arranged on the other side of the cylindrical shell, an electrode head (5), the water inlet (4) or the water outlet (7) for powering on an electrode assembly, an internal carbon-based material component is arranged in the cavity and comprises a plurality of carbon-based electrode assemblies and supporting filling accessories which are concentrically arranged, the electrode assemblies are distributed in an annular array around the center pore canal, and an electrode gap for water to pass through is formed between the adjacent electrode plates, and the two end sealing end plates (2, 21) and the circular dispersing plate (3) are connected with the cylindrical shell (1) by adopting a connecting piece (6); the electrode assembly adopts a fixing structure with two ends positioned, an annular positioning groove is arranged on the inner side of the second hollow cylindrical shell, and the two ends of the electrode assembly are embedded into the positioning groove to realize axial positioning; a plurality of groups of water guide holes are uniformly formed in the side wall of the second hollow cylinder shell and distributed along the axial direction, and two adjacent groups of water guide holes are distributed in a staggered manner.
2. The capacitive desalination apparatus of claim 1 wherein the radius of said circular dispersion plate is r3, wherein r1> r3> r2.
3. The capacitive desalination apparatus of claim 1 wherein the flow-directing channels of the circular dispersion plate are a plurality of rectilinear flow channels.
4. The capacitive desalination apparatus of claim 1 wherein the flow-directing channels of the circular dispersion plate are curvilinear flow channels.
5. The capacitive desalination apparatus of claim 4 wherein said curvilinear flow path is a plurality of wheel, lotus, curve, chrysanthemum, ruler, and sunflower shapes to accommodate different water quality conditions.
6. The capacitive desalination device of claim 1, wherein the number of electrode heads (5) is two, and the electrode heads are mutually standby.
7. The capacitive desalination device of claim 1 wherein said first hollow cylindrical housing and said second hollow cylindrical housing are made of glass steel.
8. The capacitive desalination device of claim 1 wherein said two end seal end plates are disc-shaped integral injection molded pieces.

Description

Capacitor desalting device Technical Field The invention belongs to the field of industrial water treatment, and particularly relates to a capacitor desalting device. Background Capacitive desalination is a water treatment technique that achieves desalination by driving ions to migrate to a carbon electrode through an electrostatic field to form an electric double layer. The technology utilizes the carbon-based material electrode to adsorb salt in water, only needs to discharge without chemical reagent during regeneration, and avoids the problems of high energy consumption and secondary pollution of the traditional desalting method. The capacitive desalting technology is widely applied to the aspects of sea water desalination, industrial water treatment, agricultural water and domestic water purification and the like, and has the advantages of low energy consumption, high efficiency, no secondary pollution and the like. However, the existing capacitor desalting module generally has the problems of uneven water distribution, disturbed water flow distribution and the like, so that the electrode surface utilization rate is low, the desalting efficiency is limited, and meanwhile, under the high-salt water inlet condition, the ion migration path is unreasonable, so that local concentration polarization is easily caused, and the circulation stability and the desalting rate are influenced. In addition, the traditional module structure design lacks effective regulation and control on the flowing direction and speed of water inflow, and is difficult to consider high flux and Gao Tuoyan rate, so that popularization and application of the capacitor desalination system in a large-scale water treatment scene are restricted. Disclosure of Invention Based on the above background, in order to improve the effect of capacitor desalination, the present invention provides a capacitor desalination device, which includes: The cylindrical shell comprises a first hollow cylindrical shell and a second hollow cylindrical shell, the second hollow cylindrical shell is sleeved in the first hollow cylindrical shell, and the radius r 1 of the first hollow cylindrical shell is larger than the radius r 2 of the second hollow cylindrical shell; the electrode assembly comprises a first hollow cylindrical shell and a second hollow cylindrical shell, a cavity for accommodating the electrode assembly and a water guide channel, wherein a plurality of water guide holes are uniformly formed in the water guide channel. The circular dispersion plate is arranged on the end face of the cylindrical shell, a diversion flow passage connected with the water inlet is arranged in the dispersion plate, the diversion flow passage adopts a radial flow passage design, and the diversion flow passage radially extends from the center to the periphery and is used for uniformly distributing water into the water guide passage and guiding water flow to the electrode gap through a plurality of water guide holes in the water guide passage. The two-end sealing end plates are provided with electrode heads for powering on the electrode assembly, water inlet or water outlet; The inner carbon-based material component is positioned in the cavity and comprises a plurality of carbon-based electrode assemblies and supporting filling accessories which are concentrically arranged, the electrode assemblies are distributed in an annular array around the central pore canal, and electrode gaps for water to pass through are formed between adjacent polar plates; The two end sealing end plates and the round dispersing plate are connected with the cylindrical shell through connecting pieces, a plurality of bolt connecting mechanisms are arranged on the two end sealing end plates close to the extension part around the circumference, and the fastening connection is realized through high-strength stainless steel bolts, so that the structural stability is ensured. The water guide holes are uniformly distributed on the side wall of the second hollow cylinder shell and distributed along the axial direction, two adjacent groups of water guide holes are distributed in a staggered mode, the water guide holes adopt a round hole structure, and the aperture is set according to the flow rate of water, the number of the water guide holes and the water flow speed. The capacitance desalting device has the functions of uniform water distribution and water collection, the treated water enters an electrode gap after being guided by the dispersion plate, ion migration and adsorption are realized under the action of an electric field, and the deionized process is completed. The electrode assembly adopts a fixing structure with two ends positioned, an annular positioning groove is arranged on the inner side of the second hollow cylindrical shell, and the two ends of the electrode assembly are embedded into the positioning groove to realize axial positioning. All positive plates are connected in parallel to one