Structure capable of automatically adjusting dosing concentration for regeneration of condensate polishing mixed bed

Abstract

The utility model relates to the technical field of water treatment, in particular to a structure capable of automatically adjusting dosing concentration for regeneration of a condensate polishing mixed bed. The structure comprises a tap water conveying pipeline, a compressed air conveying pipeline, an automatic dosing system, a mixed bed body and a mixed ion exchanger, the automatic dosing system comprises an anion resin regeneration ejector, an anion resin adjusting pipeline, a cation resin regeneration ejector and a cation resin adjusting pipeline, a regenerated water inlet branch pipe adopts raw water as a regeneration medium, and a backwashing pipeline and a cation resin conveying pipeline are shared, so that the construction cost is saved; on the basis of an anion resin regeneration ejector and a cation resin regeneration ejector, an anion resin adjusting pipeline and a cation resin adjusting pipeline are additionally arranged, it is guaranteed that liquid medicine at the suction end is sufficient, and the maximum supply flow is larger than the flow needed by the target concentration, by means of the technical scheme, the regeneration quality of a mixed bed body can be improved, and the purpose of saving water is achieved; the water production cost per ton of the mixed bed body is reduced.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a structure for automatically adjusting the dosing concentration for mixed bed regeneration of condensate polishing. Background Technology

[0002] In condensate polishing systems, mixed-bed regeneration typically employs an ejector to mix the regeneration chemicals, with the chemical intake adjusted by regulating the raw water flow rate to maintain the chemical concentration in the mixed solution. However, in practical applications, ejectors often fail to achieve their theoretical performance, resulting in chemical concentrations in the mixed solution deviating from the required 4%-6% range. Too low a concentration prolongs the regeneration rinsing time, increasing water costs; conversely, too high a concentration similarly prolongs the rinsing time, further increasing water consumption.

[0003] In summary, the water consumption of the mixed bed regeneration process is too high in the existing condensate polishing system. Utility Model Content

[0004] The purpose of this invention is to provide a structure that can automatically adjust the dosing concentration for mixed bed regeneration in condensate polishing, thereby solving the problem of excessive water consumption during the regeneration process of the mixed bed in existing condensate polishing systems.

[0005] To achieve the above objectives, this utility model provides a structure for automatically adjusting the dosing concentration of a mixed bed for condensate polishing regeneration. The structure includes a tap water supply pipeline, a compressed air supply pipeline, an automatic dosing system, a mixed bed body, and a mixed ion exchanger. The tap water supply pipeline is used to supply tap water to the mixed bed body. An exhaust pipe is provided on the mixed bed body. The tap water supply pipeline has a backwash branch, and a backwash drain valve is provided on the backwash branch. The compressed air supply pipeline, the backwash branch, and the exhaust pipe are all connected to the mixed ion exchanger.

[0006] The automatic dosing system includes an anion resin regeneration injector, an anion resin regulating pipeline, a cation resin regeneration injector, and a cation resin regulating pipeline. A reclaimed water inlet branch pipe is also installed on the tap water delivery pipeline. An anion resin delivery pipeline and a cation resin delivery pipeline are installed on the reclaimed water inlet branch pipe. The anion resin delivery pipeline is used to deliver anion resin into the mixed bed body. The cation resin delivery pipeline is connected to the demineralized water tank. The anion resin regeneration injector is installed on the anion resin delivery pipeline, and the anion resin regulating pipeline is installed on the anion resin regeneration injector. The cation resin delivery pipeline also has a cation resin regeneration injector and a cation resin regulating pipeline.

[0007] The anion resin regulating pipeline is sequentially equipped with a NaOH regeneration / transfer pump, a first manual ball valve, an alkali inlet regulating valve, and a first check valve. The anion resin delivery pipeline is also equipped with an anion resin regeneration flow meter, which is located at the input end of the anion resin regeneration injector.

[0008] The cation resin regulating pipeline is sequentially equipped with an HCl regeneration / transfer pump, a second manual ball valve, an acid inlet regulating valve, and a second check valve. The cation resin delivery pipeline is also equipped with a cation resin regeneration flow meter, which is located at the input end of the cation resin regeneration injector.

[0009] The cation resin delivery pipeline is also equipped with an acid concentration detector, a cation resin regeneration valve, a product water valve, and a resin trap. The acid concentration detector, the cation resin regeneration valve, the product water valve, and the resin trap are sequentially arranged between the output end of the cation resin regeneration ejector and the demineralized water tank.

[0010] The anion resin delivery pipeline is also equipped with an alkali concentration detector and an anion resin regeneration valve, which are sequentially arranged between the output end of the anion resin regeneration injector and the mixed bed body.

[0011] The reclaimed water inlet branch pipe, which is not split into the anion resin delivery pipeline and the cation resin delivery pipeline, is equipped with a reclaimed water flow meter and a reclaimed water regulating valve in sequence.

[0012] The bottom of the mixed bed body is provided with a drainage pipe. The end of the drainage pipe away from the mixed bed body is connected to the cation resin delivery pipe and is located between the cation resin regeneration valve and the product water valve.

[0013] This invention relates to a structure for automatically adjusting the dosing concentration in mixed-bed regeneration of condensate polishing. The structure includes a tap water delivery pipeline, a compressed air delivery pipeline, an automatic dosing system, a mixed-bed body, and a mixed ion exchanger. The automatic dosing system comprises an anion resin regeneration injector, an anion resin regulating pipeline, a cation resin regeneration injector, and a cation resin regulating pipeline. The regenerated water inlet branch uses raw water as the regeneration medium and shares the same backwashing pipeline as the cation resin delivery pipeline, saving construction costs. To accurately control the chemical concentration, anion and cation resin regulating pipelines are added to the existing anion and cation resin regeneration injectors to ensure sufficient chemical solution at the suction end and that the maximum supply flow rate exceeds the flow rate required for the target concentration. This technical solution improves the quality of the mixed-bed body regeneration, ensures the regeneration effect, and simultaneously saves water, thereby reducing the cost per ton of water produced by the mixed-bed body. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure provided by this utility model for automatically adjusting the dosing concentration of chemicals in a mixed bed regeneration system for condensate polishing.

[0016] 101-Tap water delivery pipeline, 102-Compressed air delivery pipeline, 104-Mixed bed body, 105-Mixed ion exchanger, 106-Exhaust pipeline, 107-Backwash branch, 108-Backwash drain valve, 109-Anion resin regeneration ejector, 110-Anion resin regulating pipeline, 111-Cation resin regeneration ejector, 112-Cation resin regulating pipeline, 113-Reclaimed water inlet branch, 114-Anion resin delivery pipeline, 115-Cation resin delivery pipeline, 116-Demineralized water tank, 117-NaOH regeneration / transfer pump, 118- 119 - Manual ball valve; 120 - Alkali inlet regulating valve; 121 - First check valve; 122 - Anion resin regeneration flow meter; 123 - HCl regeneration / transfer pump; 124 - Second manual ball valve; 125 - Acid inlet regulating valve; 126 - Second check valve; 127 - Cation resin regeneration flow meter; 128 - Acid concentration detector; 129 - Cation resin regeneration valve; 130 - Product water valve; 131 - Resin trap; 132 - Alkali concentration detector; 133 - Anion resin regeneration valve; 134 - Regenerated water flow meter; 135 - Regenerated water regulating valve; 136 - Drainage pipeline. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0018] Please see Figure 1This utility model provides a structure for automatically adjusting the dosing concentration of a mixed bed for condensate polishing regeneration. The structure includes a tap water supply pipeline 101, a compressed air supply pipeline 102, an automatic dosing system, a mixed bed body 104, and a mixed ion exchanger 105. The tap water supply pipeline 101 is used to transport tap water into the mixed bed body 104. The mixed bed body 104 is provided with an exhaust pipeline 106. The tap water supply pipeline 101 is provided with a backwash branch 107. The backwash branch 107 is provided with a backwash drain valve 108. The compressed air supply pipeline 102, the backwash branch 107, and the exhaust pipeline 106 are all connected to the mixed ion exchanger 105.

[0019] The automatic dosing system includes anion resin regeneration injector 109, anion resin regulating pipeline 110, cation resin regeneration injector 111, and cation resin regulating pipeline 112. A reclaimed water inlet branch pipe 113 is also installed on the tap water delivery pipeline 101. Anion resin delivery pipeline 114 and cation resin delivery pipeline 115 are installed on the reclaimed water inlet branch pipe 113. The anion resin delivery pipeline 114 is used to deliver anion resin into the mixed bed body 104. The cation resin delivery pipeline 115 is connected to the demineralized water tank 116. The anion resin regeneration injector 109 is installed on the anion resin delivery pipeline 114. The anion resin regulating pipeline 110 is installed on the anion resin regeneration injector 109. The cation resin regeneration injector 111 is installed on the cation resin delivery pipeline 115. The cation resin regulating pipeline 112 is installed on the cation resin regeneration injector 111.

[0020] In this embodiment, the regenerated water inlet branch pipe 113 uses raw water as the regeneration medium, and the backwashing is shared with the cation resin delivery pipeline 115, saving construction costs. In order to accurately control the concentration of the chemical solution, an anion resin regulating pipeline 110 and a cation resin regulating pipeline 112 are added to the anion resin regeneration injector 109 and the cation resin regeneration injector 111 to ensure that the chemical solution at the suction end is sufficient and the maximum supply flow rate is greater than the flow rate required for the target concentration. By adopting this technical solution, the quality of regeneration of the mixed bed body 104 can be improved, the regeneration effect can be ensured, and water saving can be achieved at the same time, thereby reducing the cost per ton of water produced by the mixed bed body 104.

[0021] Furthermore, the anion resin regulating pipeline 110 is sequentially equipped with a NaOH regeneration / transfer pump 117, a first manual ball valve 118, an alkali inlet regulating valve 119, and a first check valve 120. The anion resin conveying pipeline 114 is also equipped with an anion resin regeneration flow meter 121, which is located at the input end of the anion resin regeneration injector 109.

[0022] Furthermore, the cation resin regulating pipeline 112 is sequentially equipped with an HCl regeneration / transfer pump 122, a second manual ball valve 123, an acid inlet regulating valve 124, and a second check valve 125. The cation resin delivery pipeline 115 is also equipped with a cation resin regeneration flow meter 126, which is located at the input end of the cation resin regeneration injector 111.

[0023] Furthermore, the cation resin delivery pipeline 115 is also equipped with an acid concentration detector 127, a cation resin regeneration valve 128, a product water valve 129, and a resin trap 130. The acid concentration detector 127, the cation resin regeneration valve 128, the product water valve 129, and the resin trap 130 are sequentially arranged between the output end of the cation resin regeneration injector 111 and the demineralized water tank 116.

[0024] Furthermore, the anion resin delivery pipeline 114 is also equipped with an alkali concentration detector 131 and anion resin regeneration valve 132, which are sequentially arranged between the output end of the anion resin regeneration injector 109 and the mixed bed body 104.

[0025] In this embodiment, by combining the alkali inlet regulating valve 119 and the acid inlet regulating valve 124, and cooperating with the acid concentration detector 127 and the alkali concentration detector 131, the concentration of the regenerated solution is precisely adjusted in proportion to ensure that the concentration of the solution is controlled within the required range during the regeneration process, thereby shortening the regeneration and rinsing time and ensuring the quality of regeneration.

[0026] Furthermore, a reclaimed water flow meter 133 and a reclaimed water regulating valve 134 are sequentially installed on the reclaimed water inlet branch pipe 113, which is not branched into the anion resin delivery pipe 114 and the cation resin delivery pipe 115.

[0027] Furthermore, a drainage pipe 135 is provided at the bottom of the mixed bed body 104. The end of the drainage pipe 135 away from the mixed bed body 104 is connected to the cation resin delivery pipe 115 and is located between the cation resin regeneration valve 128 and the product water valve 129.

[0028] In summary, this technical solution does not require a separate pipeline for backwashing. Instead, it uses the inlet of the cation regeneration valve 128 for backwashing. During the backwashing process, the regenerated water regulating valve 134, the cation regeneration valve 128, and the backwash drain valve 108 are simply opened. The regenerated water regulating valve 134 is controlled by the regenerated water flow meter 133 until the regenerated water flow meter 133 reaches the specified backwash flow rate.

[0029] The regeneration of cation and anion resins is carried out simultaneously. The regenerated water flow meter 133 is set to the sum of the specified flow rates of the cation and anion resins, thereby controlling the opening degree of the regenerated water regulating valve 134. Simultaneously, the cation resin regeneration valve 128 is controlled by the cation resin regeneration flow meter 126, and the anion resin regeneration valve 132 is controlled by the anion resin regeneration flow meter 121, both controlling the valve opening to the corresponding flow rate. At the same time, the acid inlet regulating valve 124 and the alkali inlet regulating valve 119 are opened, and the HCl regeneration / transfer pump 122 and the NaOH regeneration / transfer pump 117 are activated. The acid inlet regulating valve 124 and the alkali inlet regulating valve 119 are controlled by the corresponding acid concentration detector 127 and alkali concentration detector 131, respectively, maintaining the acid concentration at 5% and the alkali concentration at 4%. The opening degree of the acid inlet regulating valve 124 and the alkali inlet regulating valve 119 is controlled according to the concentration, ultimately achieving the purpose of this innovation.

[0030] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A structure for automatically adjusting the dosing concentration in mixed-bed regeneration of condensate polishing, characterized in that, The system includes a tap water supply pipeline, a compressed air supply pipeline, an automatic dosing system, a mixed bed body, and a mixed ion exchanger. The tap water supply pipeline is used to supply tap water to the mixed bed body. The mixed bed body is equipped with an exhaust pipeline. The tap water supply pipeline is equipped with a backwash branch. The backwash branch is equipped with a backwash drain valve. The compressed air supply pipeline, the backwash branch, and the exhaust pipeline are all connected to the mixed ion exchanger. The automatic dosing system includes an anion resin regeneration injector, an anion resin regulating pipeline, a cation resin regeneration injector, and a cation resin regulating pipeline. A reclaimed water inlet branch pipe is also installed on the tap water delivery pipeline. An anion resin delivery pipeline and a cation resin delivery pipeline are installed on the reclaimed water inlet branch pipe. The anion resin delivery pipeline is used to deliver anion resin into the mixed bed body. The cation resin delivery pipeline is connected to the demineralized water tank. The anion resin regeneration injector is installed on the anion resin delivery pipeline, and the anion resin regulating pipeline is installed on the anion resin regeneration injector. The cation resin delivery pipeline also has a cation resin regeneration injector and a cation resin regulating pipeline.

2. The structure for automatically adjusting the dosing concentration for mixed-bed regeneration of condensate polishing as described in claim 1, characterized in that, The anion resin regulating pipeline is sequentially equipped with a NaOH regeneration / transfer pump, a first manual ball valve, an alkali inlet regulating valve, and a first check valve. The anion resin delivery pipeline is also equipped with an anion resin regeneration flow meter, which is located at the input end of the anion resin regeneration injector.

3. The structure for automatically adjusting the dosing concentration for mixed-bed regeneration of condensate polishing as described in claim 2, characterized in that, The cation resin regulating pipeline is sequentially equipped with an HCl regeneration / transfer pump, a second manual ball valve, an acid inlet regulating valve, and a second check valve. The cation resin delivery pipeline is also equipped with a cation resin regeneration flow meter, which is located at the input end of the cation resin regeneration injector.

4. The structure for automatically adjusting the dosing concentration for mixed-bed regeneration of condensate polishing as described in claim 3, characterized in that, The cation resin delivery pipeline is also equipped with an acid concentration detector, a cation resin regeneration valve, a product water valve, and a resin trap. The acid concentration detector, the cation resin regeneration valve, the product water valve, and the resin trap are sequentially arranged between the output end of the cation resin regeneration ejector and the demineralized water tank.

5. The structure for automatically adjusting the dosing concentration for mixed-bed regeneration of condensate polishing as described in claim 4, characterized in that, The anion resin delivery pipeline is also equipped with an alkali concentration detector and an anion resin regeneration valve, which are sequentially arranged between the output end of the anion resin regeneration injector and the mixed bed body.

6. The structure for automatically adjusting the dosing concentration for mixed bed regeneration of condensate polishing as described in claim 5, characterized in that, A reclaimed water flow meter and a reclaimed water regulating valve are sequentially installed on the reclaimed water inlet branch pipe, which is not split into the anion resin delivery pipeline and the cation resin delivery pipeline.

7. The structure for automatically adjusting the dosing concentration for mixed-bed regeneration of condensate polishing as described in claim 6, characterized in that, A drainage pipe is provided at the bottom of the mixed bed body. The end of the drainage pipe away from the mixed bed body is connected to the cation resin delivery pipe and is located between the cation resin regeneration valve and the product water valve.

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