High-utilization-rate yin-yang floating bed system

Abstract

According to the positive and negative floating bed system with the high utilization rate, a positive bed parallel pipeline is additionally arranged on at least two groups of original positive and negative floating bed systems, the positive bed parallel pipeline comprises a main pipeline and at least two branch pipelines, one end of each branch pipeline is sequentially connected with the water outlet end of a positive bed in each group of positive and negative floating beds, and the other end of each branch pipeline is connected with the water outlet end of a negative bed in each group of positive and negative floating beds. Two ends of the main pipeline are respectively connected with the two branch pipelines; and switching valves are arranged on each branch pipeline and the main pipeline between the adjacent branch pipelines. When the cation bed in a group of cation and anion beds breaks down, the cation bed with the fault can be independently cut out by controlling the switch valve on the parallel pipeline of the cation bed, and the series operation of a new group of cation bed and the original anion bed is realized, so that the service life of the anion bed is prolonged, the utilization rate of the anion bed is increased, and the operation cost of the whole desalting process is reduced.

Description

Technical Field

[0001] The utility model relates to the field of ion exchange systems, in particular to a yin-yang floating bed system with high utilization rate. Background Art

[0002] Usually, water treatment and condensate stations use ion exchange technology to desalinate pre-treated water. Ion exchange resins include anion bed resins and cation bed resins, which are OH - Type and H + Type exchange resin, OH in the resin - and H + and Cl in the incoming water - (HSiO3 - 、SO4 2- 、CO3 2- ) and Na + (Ca 2+ Mg 2+ ) ion replacement occurs, and the replaced OH- and H + It combines into H2O in water without generating other ionic impurities.

[0003] During the ion exchange desalination process, the cation exchange bed and anion exchange bed operate in series. Pretreated water first passes through the cation exchange bed to remove cations before entering the anion exchange bed to remove anions. The resins in the anion and cation exchange beds gradually lose effectiveness over time. However, the failure cycles of the cation and cation exchange beds differ; the anion exchange bed resin has a longer water production cycle than the cation exchange bed resin. After the cation exchange bed resin fails, the anion exchange bed resin has not yet failed. Because the cation and anion exchange bed resins operate in series, if both the cation and anion exchange beds fail and then are regenerated, the cation exchange bed resin will fail first. This high amount of cations will increase the load on the anion exchange bed, accelerating its failure. Furthermore, the resulting desalted water has a high cation concentration and does not meet boiler water standards.

[0004] In the existing technology, when a cation bed fails, it cannot be removed individually and must be replaced with a complete set of new beds. Generally, an ion exchange desalination process will have at least two sets of cation beds, each consisting of a cation bed and an anion bed operating in series. The water inlet of all cation beds is connected to the main water inlet pipe. When the first set of cation beds fails, the second set of cation beds is switched to operate. In special cases, when the first set of cation beds fails to operate normally and the second set of cation beds fails, it is necessary to switch to the third set of cation beds. Each set of devices operates independently and can only be switched between sets. Individual beds cannot be removed, which not only affects the service life of the anion bed resin and reduces the utilization rate of the anion bed, but also increases the operating cost of the entire desalination process. Utility Model Content

[0005] The purpose of the present invention is to address the problem that in the desalination process of the prior art ion exchange process, when a cation bed fails, the entire set of cation beds can only be replaced, and the cation bed cannot be cut out individually. The present invention provides a cation bed floating bed system with high utilization rate. On the basis of the original cation bed floating bed system, a cation bed parallel pipeline is added. The cation bed parallel pipeline includes a main line and at least two branch lines. One end of each branch line is connected to the water outlet end of the cation bed in each group of cation beds, and the other end is connected to the main line. A switch valve is provided on each branch line and on the main line between adjacent branch lines. By controlling the switch valve on the cation bed parallel pipeline, the cation bed with a fault can be cut out individually, thereby improving the service life and utilization rate of the cation bed and reducing the operating cost of the entire desalination process.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A high-utilization yin-yang floating bed system comprises at least two groups of yin-yang beds, each group of yin-yang beds comprising a yang bed and a yin bed operating in series; the water inlet ends of all yang beds are connected to a water inlet main pipe; and further comprises yang bed parallel pipelines, the yang bed parallel pipelines comprising a main pipeline and at least two branch pipelines, one end of all branch pipelines being connected in sequence to the water outlet ends of the yang beds in each group of yin-yang beds, and the other end being connected to the main pipeline, with both ends of the main line being connected to the two branch pipelines respectively; wherein, a switch valve is provided on each branch pipeline and on the main pipeline between adjacent branch pipelines.

[0008] The utility model provides a high-utilization yin-yang floating bed system. In addition to the existing system of at least two yin-yang beds, a yin-yang bed parallel pipeline is added. The yin-yang bed parallel pipeline comprises a main pipeline and at least two branch pipelines. One end of each branch pipeline is sequentially connected to the water outlet of the yin-yang bed in each group, and the other end is connected to the main pipeline. Each branch pipeline and the main pipeline between adjacent branch pipelines are provided with an on-off valve. When a yin-yang bed in a group fails, the on-off valve on the yin-yang bed parallel pipeline can be controlled to disconnect the failed yin bed, allowing the new group of yin-yang beds to operate in series with the original yin bed. This improves the service life and utilization of the yin beds and reduces the operating cost of the entire desalination process.

[0009] As a preferred solution of the present utility model, it includes 2 to 3 groups of yin and yang beds.

[0010] As a preferred solution of the present invention, each group of cation and anion beds includes a cation bed, a decarbonizer and a cathode bed running in series; the decarbonizer is used to remove carbon dioxide in water.

[0011] As a preferred solution of the present invention, the water outlets of all shade beds are connected to drainage pipes.

[0012] As a preferred solution of the present invention, the water inlet and outlet of the positive bed and the negative bed are both provided with switch valves.

[0013] As a preferred solution of the present invention, the switch valve at the water outlet end of the cathodic bed is arranged between the cathodic bed and the corresponding branch line.

[0014] As the preferred solution of the present invention, a Na + Analytical instrument. Separately monitor the water output index of the cationic bed, and timely switch out the failed cationic bed to ensure that the water output ions meet the standards.

[0015] As a preferred embodiment of the present invention, a cation exchange resin is provided in the cation bed for removing cations in the pretreated water; and an anion exchange resin is provided in the anion bed for removing anions in the pretreated water.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0017] The utility model provides a high-utilization yin-yang floating bed system. In addition to the existing system of at least two yin-yang beds, a yin-yang bed parallel pipeline is added. The yin-yang bed parallel pipeline comprises a main pipeline and at least two branch pipelines. One end of each branch pipeline is sequentially connected to the water outlet of the yin-yang bed in each group, and the other end is connected to the main pipeline. Each branch pipeline and the main pipeline between adjacent branch pipelines are provided with an on-off valve. When a yin-yang bed in a group fails, the on-off valve on the yin-yang bed parallel pipeline can be controlled to disconnect the failed yin bed, allowing the new group of yin-yang beds to operate in series with the original yin bed. This improves the service life and utilization of the yin beds and reduces the operating cost of the entire desalination process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the prior art yin-yang floating bed system.

[0019] Figure 2 This is a schematic structural diagram of the yin-yang floating bed system provided by the utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the yin-yang floating bed system provided in Example 2.

[0021] Icons: 1-cation bed; 11-cation bed; 12-anion bed; 13-decarbonizer; 2-water inlet main pipe; 21-drain pipe; 3-cation bed parallel pipeline; 31-main line; 311-on / off valve; 311a-on / off valve; 32-branch line; 321-Na + Analytical instruments. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings.

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] Example 1

[0025] The prior art provides a yin-yang floating bed system comprising at least two groups of yin-yang beds 1, such as Figure 1 As shown, the provided yin and yang beds include two groups A and B, as shown in the dotted box in the figure, each group of yin and yang beds 1 includes a cation bed 11 and a yin bed 12 running in series; the water inlet ends of all cation beds 11 are connected to the water inlet main pipe 2. When in use, the pretreated water of the water inlet main pipe enters the yin and yang beds of group A for desalination, and the yin and yang beds of group B are closed for standby. The pretreated water flows from the cation bed in group A to the yin bed in group A and then is discharged. When the cation bed in group A fails, the yin and yang beds of group B are opened, the yin and yang beds of group A are turned off, and the entire yin and yang beds are replaced. Because the yin bed stagnates after use, reuse will affect the service life of the anion bed resin. At the same time, the replacement of the entire group reduces the utilization rate of the anion bed and increases the operating cost of the entire desalination process.

[0026] like Figure 2 As shown, this embodiment Figure 1 The yin-yang floating bed system of the prior art has been improved. On the basis of the original yin-yang floating bed system, a cation bed parallel pipeline 3 has been added. The cation bed parallel pipeline 3 includes a main line 31 and two branch lines 32. One end of all branch lines 32 is connected to the water outlet end of the cation bed 11 in each group of yin-yang beds 1 in turn, and the other end is connected to the two ends of the main line 31; wherein, a switch valve 311 is provided on each branch line 32 and on the main line 31 between adjacent branch lines 32.

[0027] When a cation bed in a group of cation beds fails, the faulty cation bed can be cut out separately by controlling the switch valve on the parallel pipeline of the cation beds, so that a new group of cation beds and the original anion beds can be operated in series, thereby improving the service life and utilization rate of the anion beds and reducing the operating costs of the entire desalination process.

[0028] For example, if the cation bed in group A fails, the switch valves at the water inlet and outlet ends of the cation bed in group A are closed, and the pretreated water enters the cation bed in group B from the water inlet main pipe, and then passes through the cation bed parallel pipeline. At this time, the switch valves are all opened and flow into the yin bed in group A, realizing the separate cutting of the cation bed and improving the utilization rate and service life of the yin bed.

[0029] As a preferred solution of the present invention, each group of cation and cation beds 1 includes a cation bed 11, a decarbonizer 13 and a cathode bed 12 running in series; the decarbonizer 13 is used to remove carbon dioxide in water.

[0030] As a preferred solution of the present invention, the water outlets of all the shade beds 12 are connected to the drainage pipe 21 .

[0031] As a preferred solution of the present invention, the water inlet and outlet ends of the positive bed 11 and the negative bed 12 are both provided with switch valves 311a.

[0032] As a preferred solution of the present invention, the switch valve 311a at the water outlet end of the positive bed 11 is set between the positive bed 11 and the corresponding branch line 32.

[0033] As a preferred solution of the present invention, a Na is further provided between the switch valve 311a at the outlet of the positive bed 11 and the corresponding branch line 32. + Analytical instrument 321. Separately monitor the cation bed water output index, and switch the failed cation bed in time to ensure that the ion output water meets the standard.

[0034] As a preferred embodiment of the present invention, the cation bed 11 is provided with a cation exchange resin for removing cations in the pretreated water; the anion bed 12 is provided with an anion exchange resin for removing anions in the pretreated water.

[0035] Example 2

[0036] The yin-yang floating bed system provided by the prior art usually includes three groups of yin-yang beds 1 when the yin-yang bed failure rate is high. Figure 3 As shown, the provided yin-yang beds 1 include three groups A, B and C. As shown in the dotted box in the figure, each group of yin-yang beds 1 includes a yang bed 11 and a yin bed 12 running in series; the water inlet ends of all yang beds 11 are connected to the water inlet main pipe 2. When in use, the pretreated water of the water inlet main pipe enters the yin-yang bed of group A for desalination, and the yin-yang bed of group B is closed for standby. The pretreated water flows from the yang bed in group A to the yin bed in group A and then is discharged. When the yang bed in group A fails, the yin-yang bed of group B is turned on, the yin-yang bed of group A is turned off, and the yin-yang bed of the entire yin-yang bed is replaced. When the yin-yang bed of group A fails to operate normally and the yin-yang bed of group B fails, it is necessary to switch to the yin-yang bed of group C.

[0037] like Figure 3As shown, on the basis of the original yin-yang floating bed system, a cation bed parallel pipeline 3 is added, and the cation bed parallel pipeline 3 includes a main line 31 and three branch lines 32. One end of all branch lines 32 is connected to the water outlet end of the cation bed 11 in each group of yin-yang beds 1 in turn, and the other end is connected to the main line 31. The two ends of the main line 31 are respectively connected to the two branch lines 32; wherein, a switch valve 311 is provided on each branch line 32 and on the main line 31 between adjacent branch lines 32.

[0038] When a cation bed in a group of cation beds fails, the faulty cation bed can be cut out separately by controlling the switch valve on the parallel pipeline of the cation beds, so that a new group of cation beds and the original anion beds can be operated in series, thereby improving the service life and utilization rate of the anion beds and reducing the operating costs of the entire desalination process.

[0039] For example, during the initial operation, group A is in operation, groups B and C are in the closed state, and the cation bed in the yin-yang bed of group A fails, then the switch valves at the water inlet and outlet ends of the cation bed in the yin-yang bed of group A are closed, and the pretreated water enters the cation bed in the yin-yang bed of group B from the water inlet main pipe, and then passes through the cation bed parallel pipeline. At this time, the switch valves ac are both open, and the switch valve d and the switch valve e are closed, and flow into the yin bed in the yin-yang bed of group A, that is, the cation bed of group B and the yin bed of group A are in operation, realizing the separate cutting of the cation bed and improving the utilization rate and service life of the yin bed.

[0040] However, in actual operation, it may happen that the cation bed of group A has not yet restored to normal function and the cation bed of group B has also malfunctioned. In this case, it is necessary to open the switch valves at the water inlet and outlet ends of the cation bed of group C, and close the switch valves at the water inlet and outlet ends of the cation beds of groups A and B. The pretreated water enters the cation bed in the yin-yang bed of group C from the water inlet main pipe, and then passes through the cation bed parallel pipeline. If the yin bed of group A is used, open the switch valves abde in the cation bed parallel pipeline, close the switch valve c, and flow into the yin bed in the yin-yang bed of group A, that is, the cation bed of group C and the yin bed of group A are in operation; if open the switch valve cde in the cation bed parallel pipeline, close the switch valve ab, and flow into the yin bed in the yin-yang bed of group B, that is, the cation bed of group C and the yin bed of group B are in operation; the separate cutting of the cation bed is realized, which improves the utilization rate and service life of the yin bed.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-utilization yin-yang floating bed system, comprising at least two groups of yin-yang beds (1), each group of yin-yang beds (1) comprising a yang bed (11) and a yin bed (12) operating in series; The water inlet ends of all cathodic beds (11) are connected to the water inlet main pipe (2); It is characterized by: It also includes a cationic bed parallel pipeline (3), wherein the cationic bed parallel pipeline (3) includes a main pipeline (31) and at least two branch pipelines (32). One end of all branch lines (32) is connected to the water outlet of the yang bed (11) in each group of yin and yang beds (1) in sequence, and the other end is connected to the main line (31). The two ends of the main line (31) are respectively connected to two branch lines (32); Wherein, a switch valve (311) is provided on each branch line (32) and on the main line (31) between adjacent branch lines (32).

2. The high-utilization yin-yang floating bed system according to claim 1, characterized in that: It includes 2 to 3 sets of yin-yang beds (1).

3. The high-utilization yin-yang floating bed system according to claim 1, characterized in that: Each group of cation and cation beds (1) comprises a cation bed (11), a decarbonizer (13) and a cathode bed (12) which are sequentially operated in series; the decarbonizer (13) is used to remove carbon dioxide from water.

4. The high-utilization yin-yang floating bed system according to claim 1, characterized in that: The water outlets of all the negative beds (12) are connected to the drainage pipe (21).

5. The high-utilization yin-yang floating bed system according to claim 1, characterized in that: The water inlet and outlet ends of the positive bed (11) and the negative bed (12) are both provided with switch valves (311).

6. The high-utilization yin-yang floating bed system according to claim 5, characterized in that: The switch valve (311) at the water outlet end of the cathodic bed (11) is arranged between the cathodic bed (11) and the corresponding branch line (32).

7. The high-utilization yin-yang floating bed system according to claim 6, characterized in that: A Na is also provided between the switch valve (311) at the outlet end of the cathodic bed (11) and the corresponding branch line (32). + Analytical instruments.

8. The high-utilization yin-yang floating bed system according to any one of claims 1 to 7, characterized in that: The cation bed (11) is provided with a cation exchange resin for removing cations in the pretreated water; the anion bed (12) is provided with an anion exchange resin for removing anions in the pretreated water.

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