CN102276028A - High pressure electrostatic seawater desalination device based on ion inversion - Google Patents

Abstract

The invention discloses a high-voltage electrostatic seawater desalinator based on ion reversal, which includes a high-voltage positive plate, a high-voltage negative plate, a cylindrical ion inverter and an insulating ion collector; the high-voltage positive plate and the high-voltage negative plate are arranged in parallel, The ion inverter is rotatably arranged between the high-voltage positive plate and the high-voltage negative plate, and the axis is parallel to the plate surface of the high-voltage positive plate; On the axis of , the two sides are parallel to the high-voltage positive plate and the high-voltage negative plate respectively. The ion separation ability of this desalter is extremely strong, the two electrode plates are parallel and carry positive and negative high voltages, a strong high-voltage electrostatic field is formed between the plates, which enhances the separation ability of ions, so that salt ions are continuously transferred from low potential energy positions, reversed to the high potential position, and converge to the two sides of the insulating ion collector and be removed, so that the ions in the brine can be separated more fully, and the ion separation efficiency is greatly improved.

Description

High-voltage electrostatic seawater desalination device based on ion reversal

technical field

The invention relates to a seawater desalinator, in particular to a high-voltage electrostatic seawater desalinator based on ion reversal.

Background technique

The fresh water resources of human beings are getting less and less and the demand is increasing. Seawater desalination is an effective way to solve the shortage of water resources.

At present, there are patents showing that: when the water pipe is placed in a static strong magnetic field, when the brine flows at high speed in the pipe, the positive and negative ions in the brine are separated by the Lorentz force in the opposite direction, so that the water is desalinated. However, the flow velocity of the seawater in the pipeline is required to be high, so the required water pressure is high, the energy consumption is large, and the efficiency is low. When flowing at high speed, the Lorentz force that the ions bear has a short stress time, so the ion separation time is short, which further reduces the separation efficiency.

In addition, there is currently an electrodialytic seawater desalinator. The distance between the electrodes is very small, the voltage between the electrodes is very small, and the adsorption force for ions in seawater is very limited. Moreover, it is necessary to alternate positive and negative electrode voltages to release adsorbed ions and reduce electrode corrosion. After releasing the adsorbed ions, the brine concentration increases, and the concentrated brine should be discharged immediately. In this electrodialysis seawater desalinator, the change of electrode voltage polarity and the discharge of concentrated brine take up the ion separation time, which reduces the efficiency of seawater desalination; and the change of voltage polarity greatly increases energy consumption; the electrode has certain corrosion .

Contents of the invention

In order to overcome the existing deficiencies such as high water pressure, short separation time, low efficiency, and small adsorption concentration, the present invention provides a method that not only greatly reduces pipeline water pressure, reduces power consumption, but also greatly increases ion removal concentration. , a high-voltage electrostatic seawater desalinator based on ion reversal that makes the ion separation in brine more complete.

The high-voltage electrostatic seawater desalinator based on ion reversal provided by the present invention includes a high-voltage positive plate, a high-voltage negative plate, a cylindrical ion inverter and an insulated ion collector; the high-voltage positive plate and the high-voltage negative plate are arranged in parallel , the ion reverser is rotatably arranged between the high-voltage positive plate and the high-voltage negative plate, and the axis of the ion reverser is parallel to the plate surface of the high-voltage positive plate; the cross-section of the insulated ion collector is Rectangular structure, and set on the axis of the ion inverter, the two sides of the insulating ion collector are respectively parallel to the high-voltage positive plate and the high-voltage negative plate;

The inner circle of the ion reverser is equipped with a plurality of blades evenly distributed along the axial direction, the blades on the inner circle of the ion reverser are arranged obliquely in the clockwise direction, and the inner circle of the ion reverser is in the circumferential direction A plurality of arc-shaped partitions perpendicular to the blades are evenly distributed; the inner circle of the ion inverter is divided into a plurality of concave regions by the blades and the arc-shaped partitions;

The two sides of the insulating ion collector are respectively provided with transverse partitions and longitudinal partitions, and the two sides of the insulating ion collector are divided into a plurality of concave regions by the transverse partitions and the longitudinal partitions.

Compared with the prior art, the high-voltage electrostatic seawater desalinator based on ion reversal of the present invention has the following advantages:

(1) The ion separation ability of the present invention is extremely strong, the two electrode plates are parallel and carry positive and negative high voltages, a strong high-voltage electrostatic field is formed between the electrodes, and the separation ability for ions is enhanced.

(2) The present invention can continuously separate ions, using a rotating ion inverter and an insulating ion collector, so that salt ions are continuously transferred from a low potential energy position, reversed to a high potential position, and converged on both sides of the insulating ion collector on and removed.

(3) The electrode voltage does not need to be alternated, which reduces energy consumption to a certain extent.

(4) Using the mutual attraction characteristics of opposite ions can greatly increase the enrichment concentration of ions on the two side walls of the ion collection plate, make the ion separation in brine more sufficient, and greatly improve the ion separation efficiency.

Description of drawings

Figure 1 is a schematic structural diagram of a high-voltage electrostatic seawater desalinator based on ion inversion;

Fig. 2 is a schematic diagram of a partial structure of an ion inverter in a high-voltage electrostatic seawater desalinator based on ion inversion.

In the attached drawings: 1—high voltage positive plate; 2—high voltage negative plate; 3—ion inverter; 4—insulated ion collector; 5—blade; 6—arc partition; 7—transverse partition; 8—longitudinal Partition; 9—convex.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail. the

Fig. 1 is a schematic structural diagram of a high-voltage electrostatic seawater desalinator based on ion inversion, and Fig. 2 is a schematic diagram of a partial structure of an ion inverter in a high-voltage electrostatic seawater desalinator based on ion inversion, as shown in the figure. A high-voltage electrostatic seawater desalinator based on ion reversal includes a high-voltage positive plate 1 , a high-voltage negative plate 2 , a cylindrical ion reverser 3 and an insulated ion collector 4 . The high-voltage positive plate 1 and the high-voltage negative plate 2 are arranged in parallel, and the ion inverter 3 is arranged between the high-voltage positive plate 1 and the high-voltage negative plate 2 in a rotatable manner, and the axis of the ion inverter 3 is aligned with the high-voltage positive plate 1. The boards are parallel. The cross-section of the insulating ion collector 4 is a rectangular structure and is arranged on the axis of the ion inverter 3 . The two sides of the insulating ion collector 4 are parallel to the high-voltage positive plate 1 and the high-voltage negative plate 2 respectively. One end of the cylindrical ion inverter 3 is a brine water inlet, and the other end is a fresh water outlet, and the anions and cations are collected and discharged by the insulating ion collector 4 .

Wherein, the inner circle of the ion inverter 3 is evenly arranged with a plurality of blades 5 along the axial direction, and the inner circle of the ion inverter 3 is evenly arranged with a plurality of arc-shaped partitions 6 perpendicular to the blades in the circumferential direction, The number of blades 5 and arc-shaped partitions 6 can be determined according to actual conditions (for example, determined according to the size of the inner circle of the ion inverter 3 ). The inner circle of the ion inverter 3 is divided into a plurality of concave regions by blades 5 and arc-shaped partitions 6 . The blades on the inner circle of the ion reverser 3 are inclined clockwise. The two sides of the insulating ion collector 4 are respectively provided with a transverse partition 7 and a longitudinal partition 8 , and the two sides of the insulating ion collector 4 are divided into a plurality of concave regions by the transverse partition 7 and the longitudinal partition 8 . The recessed area and the concave area are used to store ions and prevent the water from taking away the ions when it flows in the axial direction.

In this embodiment, the inner circle of the ion reverser 3 and the two side walls of the blades 5 are provided with ribs 9 perpendicular to the axis to prevent the ions from being taken out of the ion reverser 3 by the water along with the flow of water, thereby reducing the desalination of seawater efficiency. The flow rate of the brine in the ion reverser 3 cannot be too fast, and the seawater needs to flow slowly in the ion reverser 3 to ensure the most ion reversal. Prevent the exchanged ions from being brought to the fresh water outlet by the flowing water.

The ion reverser 3 rotates, while the high-voltage positive plate 1 and the high-voltage negative plate 2 are stationary, and the brine flows in from the ion reverser 3 . When the high-voltage positive plate 1 and the high-voltage negative plate 2 are charged with high voltage, a strong electric field will be formed between the two electrodes, and the direction is from the high-voltage positive plate 1 to the high-voltage negative plate 2 . Anions always experience a leftward electric field force, while cations always experience a rightward electric field force. The anions in the brine in the ion inverter 3 move to the left under the action of the electric field force to the left, and the anion concentration on the left wall of the ion inverter 3 is relatively high; while the cations move to the right, and the left side of the ion inverter 3 Higher concentration of wall anions. When the ion inverter 3 rotates clockwise, the negative ions rotate from the low potential energy position to the high potential energy position with the rotation of the ion inverter 3 due to the restriction of the blade 5, and when the blade 5 is at a certain angle, the anions are attracted by the electric field force Take out, accelerate and move to the right side wall of the insulating ion collector 4, enrich and be discharged, cations are similar to anions. The seawater desalinator can efficiently desalinate seawater, brackish water and process some industrial waste water.

The electrostatic voltage between the high-voltage positive plate 1 and the high-voltage negative plate 2 is as large as possible under the condition of insulation permitting, while the distance is as small as possible, so as to increase the electric field strength and enhance the electric field force of ions, so that the concentration of ion collection is increased. The number of ribs 9 on the ion inverter 3 is as many as possible, and the walls of the ribs are as thin as possible, so that the inner wall of the ion inverter 3 is divided into a large number of recessed areas, increasing the ion concentration gradient and the inversion effect. The wall of the insulating ion collector 4 is as thin as possible to increase the attraction force between opposite ions on its two sides and increase the enrichment concentration of ions. The insulating ion collector 4 is provided with convex ribs, the amount of convex ribs is as large as possible, and the walls of the convex ribs are as thin as possible, so as to increase the ion concentration gradient and reverse effect.

Under the action of the electric field force, the ions at the corresponding two side walls in the ion inverter 3 are always bound in the concave region of the ion inverter 3 . When the ion reverser 3 rotates clockwise, the ions will be brought to the other side of the insulating ion collector 4 along with the rotation of the ion reverser 3 due to the joint limitation of the blade 5, the arc-shaped partition 6 and the rib 9 side. Under the action of a certain angle and electric field force, the ions are poured out of the recessed area, and finally gather in the inner recessed area on the side wall of the insulating ion collector 4 . The same ribs are also distributed on the side walls of the insulating ion collector 4 . The ion inverter 3 moves a large number of ions from a position of low potential energy to a position of high potential energy, and then gathers on both side walls of the insulating ion collector under the action of electric field force.

The present invention uses the electrostatic attraction of the high-voltage electrostatic field to forcibly separate anion and cation in seawater, and greatly increases the ion concentration on the insulating ion collector 4 . The two sidewalls of the insulating ion collector 4 gather opposite-sex ions, and their opposite-sex attraction characteristics further increase the ion concentration on the insulating ion collector 4. The above characteristics can significantly improve the separation efficiency of ions in seawater.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (1)

1. the high pressure static electricity type fresh-water generator based on ion inversion is characterized in that: the ion inversion device (3) and the insulation ion collector (4) that comprise high-voltage positive electrode plate (1), high voltage negative plate (2), round tube type; Described high-voltage positive electrode plate (1) be arranged in parallel with high voltage negative plate (2), described ion inversion device (3) rotatably is located between high-voltage positive electrode plate (1) and the high voltage negative plate (2), and the axis of ion inversion device (3) is parallel with the plate face of high-voltage positive electrode plate (1); The cross section of described insulation ion collector (4) is a rectangular configuration, and is located on the axis of ion inversion device (3), and the two sides of insulation ion collector (4) are parallel with high voltage negative plate (2) with high-voltage positive electrode plate (1) respectively;

Be laid with a plurality of blades (5) on the interior circle of described ion inversion device (3) vertically, the blade on the interior circle of described ion inversion device (3) is obliquely installed along clockwise direction; The interior circle of ion inversion device (3) is laid with a plurality of and the vertical circular arc dividing plate of blade (5) (6) in a circumferential direction; Be divided into a plurality of sunk areas by blade (5) and circular arc dividing plate (6) on the interior circle of described ion inversion device (3);

Be respectively equipped with lateral partitions (7) and wash plate (8) on the two sides of described insulation ion collector (4), the two sides of described insulation ion collector (4) are divided into a plurality of indents zone by lateral partitions (7) and wash plate (8).

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