阅读说明：本技术 一种脱磷中试实验装置 (Dephosphorization pilot scale experimental apparatus ) 是由 王存明 于 2020-06-30 设计创作，主要内容包括：本发明提供一种脱磷中试实验装置,包括：若干并列的磷离子去除系统,磷离子去除系统包括第一阳离子树脂罐、阴离子树脂罐及第二阳离子树脂罐；双氧水输入管道,与第一阳离子树脂罐连接；去磷溶液共用管道,与第一阳离子树脂罐、阴离子树脂罐及第二阳离子树脂罐连接；酸性溶液输入管道、碱性溶液输入管道及中性溶液输入管道,均与去磷溶液共用管道连接；可通过树脂的吸附作用将双氧水中的磷离子去除,然后再通过向第一阳离子树脂罐、阴离子树脂罐及第二阳离子树脂罐三个树脂罐中均依次输入酸性溶液、碱性溶液及中性溶液,将三个树脂罐中的树脂表面吸附的磷离子去除,实现树脂再生的目的,从而本方案中的脱磷中试实验装置可继续重复利用。(The invention provides a dephosphorization pilot test experimental device, which comprises: the system comprises a plurality of parallel phosphorus ion removal systems, a plurality of parallel phosphorus ion removal systems and a plurality of control systems, wherein each phosphorus ion removal system comprises a first cation resin tank, an anion resin tank and a second cation resin tank; the hydrogen peroxide input pipeline is connected with the first cationic resin tank; the common pipeline of the dephosphorizing solution is connected with the first cationic resin tank, the anionic resin tank and the second cationic resin tank; the acid solution input pipeline, the alkaline solution input pipeline and the neutral solution input pipeline are all connected with the common pipeline of the phosphorus removal solution; the adsorption of accessible resin gets rid of the phosphorus ion in hydrogen peroxide solution, then all inputs acid solution, alkaline solution and neutral solution in proper order through in the three resin jar to first cationic resin jar, anionic resin jar and second cationic resin jar again, gets rid of the resin surface adsorption's in the three resin jar phosphorus ion, realizes the purpose of resin regeneration to dephosphorization pilot scale experimental apparatus in this scheme can continue reuse.)

1. The utility model provides a dephosphorization pilot scale experimental apparatus which characterized in that includes:

the system comprises a plurality of parallel phosphorus ion removal systems, a plurality of parallel phosphorus ion removal systems and a plurality of control systems, wherein each phosphorus ion removal system comprises a first cation resin tank, an anion resin tank connected with the first cation resin tank and a second cation resin tank connected with the anion resin tank;

further comprising:

the hydrogen peroxide input pipeline is connected with the first cationic resin tank; the hydrogen peroxide input by the hydrogen peroxide input pipeline contains phosphorus ions;

removing phosphorus ions in the hydrogen peroxide by adsorption of resins in the first cation resin tank, the anion resin tank and the second cation resin tank;

further comprising:

the common pipeline of the dephosphorizing solution is respectively connected with the first cationic resin tank, the anionic resin tank and the second cationic resin tank;

the acid solution input pipeline is connected with the common pipeline of the dephosphorizing solution and is used for inputting acid solutions to the first cationic resin tank, the anionic resin tank and the second cationic resin tank;

the alkaline solution input pipeline is connected with the common pipeline of the dephosphorizing solution and is used for inputting alkaline solution to the first cationic resin tank, the anionic resin tank and the second cationic resin tank;

the neutral solution input pipeline is connected with the common pipeline of the dephosphorizing solution and is used for inputting neutral solution to the first cationic resin tank, the anionic resin tank and the second cationic resin tank;

the acidic solution, the alkaline solution and the neutral solution are input into the first cation resin tank, the anion resin tank and the second cation resin tank, so that phosphorus ions on the surfaces of the resins in the first cation resin tank, the anion resin tank and the second cation resin tank are removed, and the resin regeneration is realized.

2. The dephosphorization pilot test experimental device according to claim 1, further comprising a cooler connected to the first cationic resin tank and the hydrogen peroxide input pipeline respectively for cooling the hydrogen peroxide input from the hydrogen peroxide input pipeline.

3. The pilot experimental plant of dephosphorization according to claim 2, further comprising:

the chilled water inlet pipeline is respectively connected with the cooler and the anion resin tank;

and the chilled water self-return pipeline is respectively connected with the cooler and the anion resin tank and is used for returning chilled water passing through the cooler and the anion resin tank.

4. The pilot experimental plant for dephosphorization according to claim 3, wherein a first valve is provided between said chilled water inlet pipe and the cooler for controlling whether the water of the chilled water from the inlet pipe flows into the cooler;

and a second valve is arranged between the chilled water self-return water pipeline and the cooler and used for controlling whether the chilled water flowing into the cooler flows out or not.

5. Dephosphorization pilot plant experimental apparatus according to claim 3,

a third valve is arranged between the chilled water self-inlet pipeline and the anion resin tank and is used for controlling whether the water of the chilled water self-inlet pipeline flows into the anion resin tank or not;

and a fourth valve is arranged between the chilled water self-return pipeline and the anion resin tank and is used for controlling whether the chilled water flowing into the anion resin tank flows out or not.

6. The pilot experimental plant of dephosphorization according to claim 3, further comprising:

the refrigerating unit is respectively connected with the chilled water from the water inlet pipeline and the chilled water from the water return pipeline and used for receiving and cooling the chilled water flowing back from the water return pipeline and providing the chilled water from the water inlet pipeline for the chilled water.

7. The pilot experimental installation of dephosphorization according to claim 1 or 2, further comprising: and the first filter is arranged on the common pipeline of the dephosphorizing solution and is used for filtering the input acidic solution, the alkaline solution or the neutral solution.

8. The pilot experimental plant of dephosphorization according to claim 1, further comprising a second filter for filtering the hydrogen peroxide solution discharged through the second cationic resin tank.

9. The experimental apparatus for dephosphorization pilot plant according to claim 1, wherein a blowdown line is provided on said first cationic resin tank, said anionic resin tank and said second cationic resin tank, and a corresponding blowdown valve is provided on each blowdown line, and the state of the blowdown line is controlled by controlling the opening and closing of the blowdown valves.

10. Dephosphorization pilot scale experimental facility according to claim 1,

a ninth valve is arranged between the first cationic resin tank and the anionic resin tank and is used for controlling whether hydrogen peroxide in the first cationic resin tank flows into the anionic resin tank or not;

a tenth valve is arranged between the anion resin tank and the second cation resin tank and is used for controlling whether hydrogen peroxide in the anion resin tank flows into the second cation resin tank or not;

and an eleventh valve is arranged on the liquid discharge pipe of the second cationic resin tank and is used for controlling the discharge of hydrogen peroxide in the second cationic resin tank.

Technical Field

The invention relates to the technical field of reaction kettle equipment, in particular to a dephosphorization pilot scale experiment device.

Background

After the ion exchange resin is used for a period of time, impurities adsorbed on the surface of the ion exchange resin are close to a saturated state, and in order to ensure the adsorption efficiency of the ion exchange resin, the ion exchange resin needs to be subjected to dephosphorization regeneration treatment.

However, the existing apparatus for dephosphorizing and regenerating ion exchange resin is complicated, and the yield and yield of the ion exchange resin obtained by dephosphorizing and regenerating are low, resulting in low efficiency of resin generation by ion exchange.

Disclosure of Invention

Aiming at the problems and the defects in the prior art, the embodiment of the invention provides a dephosphorization pilot-scale experiment device, so that the aims of improving the yield and the yield of the ion exchange resin obtained through dephosphorization and regeneration treatment and improving the resin generation efficiency through ion exchange are fulfilled.

According to the experimental device for dephosphorization pilot scale provided by the embodiment of the invention, the experimental device comprises:

the system comprises a plurality of parallel phosphorus ion removal systems, a plurality of parallel phosphorus ion removal systems and a plurality of control systems, wherein each phosphorus ion removal system comprises a first cation resin tank, an anion resin tank connected with the first cation resin tank and a second cation resin tank connected with the anion resin tank;

further comprising:

the hydrogen peroxide input pipeline is connected with the first cationic resin tank; the hydrogen peroxide input by the hydrogen peroxide input pipeline contains phosphorus ions;

removing phosphorus ions in the hydrogen peroxide by adsorption of resins in the first cation resin tank, the anion resin tank and the second cation resin tank;

further comprising:

the common pipeline of the dephosphorizing solution is respectively connected with the first cationic resin tank, the anionic resin tank and the second cationic resin tank;

the acid solution input pipeline is connected with the common pipeline of the dephosphorizing solution and is used for inputting acid solutions to the first cationic resin tank, the anionic resin tank and the second cationic resin tank;

the alkaline solution input pipeline is connected with the common pipeline of the dephosphorizing solution and is used for inputting alkaline solution to the first cationic resin tank, the anionic resin tank and the second cationic resin tank;

the neutral solution input pipeline is connected with the common pipeline of the dephosphorizing solution and is used for inputting neutral solution to the first cationic resin tank, the anionic resin tank and the second cationic resin tank;

the acidic solution, the alkaline solution and the neutral solution are input into the first cation resin tank, the anion resin tank and the second cation resin tank, so that phosphorus ions on the surfaces of the resins in the first cation resin tank, the anion resin tank and the second cation resin tank are removed, and the resin regeneration is realized.

In one embodiment, the device further comprises a cooler which is respectively connected with the first cationic resin tank and the hydrogen peroxide input pipeline and is used for cooling the hydrogen peroxide input by the hydrogen peroxide input pipeline.

In one embodiment, further comprising:

the chilled water inlet pipeline is respectively connected with the cooler and the anion resin tank;

and the chilled water self-return pipeline is respectively connected with the cooler and the anion resin tank and is used for returning chilled water passing through the cooler and the anion resin tank.

In one embodiment, a first valve is arranged between the chilled water inlet pipeline and the cooler and is used for controlling whether the water of the chilled water inlet pipeline flows into the cooler or not;

and a second valve is arranged between the chilled water self-return water pipeline and the cooler and used for controlling whether the chilled water flowing into the cooler flows out or not.

In one embodiment of the present invention,

a third valve is arranged between the chilled water self-inlet pipeline and the anion resin tank and is used for controlling whether the water of the chilled water self-inlet pipeline flows into the anion resin tank or not;

and a fourth valve is arranged between the chilled water self-return pipeline and the anion resin tank and is used for controlling whether the chilled water flowing into the anion resin tank flows out or not.

In one embodiment, further comprising:

the refrigerating unit is respectively connected with the chilled water from the water inlet pipeline and the chilled water from the water return pipeline and used for receiving and cooling the chilled water flowing back from the water return pipeline and providing the chilled water from the water inlet pipeline for the chilled water.

In one embodiment, further comprising:

and the first filter is arranged on the common pipeline of the dephosphorizing solution and is used for filtering the input acidic solution, the alkaline solution or the neutral solution.

In one embodiment, the system further comprises a second filter for filtering the hydrogen peroxide discharged from the second cation resin tank.

In one embodiment, a drain pipe is arranged on the first cation resin tank, the anion resin tank and the second cation resin tank, a corresponding drain valve is arranged on each drain pipe, and the state of the drain pipe is controlled by controlling the on-off of the drain valves.

In one embodiment of the present invention,

a ninth valve is arranged between the first cationic resin tank and the anionic resin tank and is used for controlling whether hydrogen peroxide in the first cationic resin tank flows into the anionic resin tank or not;

a tenth valve is arranged between the anion resin tank and the second cation resin tank and is used for controlling whether hydrogen peroxide in the anion resin tank flows into the second cation resin tank or not;

and an eleventh valve is arranged on the liquid discharge pipe of the second cationic resin tank and is used for controlling the discharge of hydrogen peroxide in the second cationic resin tank.

The experimental device for dephosphorization pilot scale provided by the embodiment of the invention at least has the following technical effects:

can get rid of the phosphorus ion in the hydrogen peroxide solution to the adsorption through resin, then all input acid solution, alkaline solution and neutral solution in proper order in through the three resin jar to first cationic resin jar, anionic resin jar and second cationic resin jar again to get rid of the phosphorus ion of resin surface adsorption in the three resin jar, realize the purpose of resin regeneration, thereby the dephosphorization pilot scale experimental apparatus in this scheme can continue reuse.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic structural diagram of a pilot plant experimental apparatus for dephosphorization provided by an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention is further illustrated by the following examples and figures. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

The embodiment of the invention discloses a pilot plant experimental device for dephosphorization, which is shown in figure 1 and comprises the following components:

the system comprises a plurality of parallel phosphorus ion removal systems, wherein each first phosphorus ion removal system comprises a first cation resin tank 11, a first anion resin tank 12 connected with the first cation resin tank 11 and a second cation resin tank 13 connected with the first anion resin tank 12; in the embodiment of the present invention, the number of the phosphorus ion removal systems is set to 2, and it is noted that other numbers of phosphorus ion removal systems may be provided, such as 3, 4, 5, 6, etc., and 2 is listed here for convenience of description only and is not a specific limitation on the number of the phosphorus ion removal systems. Meanwhile, in the embodiment of the present invention, the second phosphorus ion removal system includes a third cationic resin tank 14, a second anionic resin tank 15 and a fourth cationic resin tank 16, wherein the second phosphorus ion removal system and the first phosphorus ion removal system have the same structure and working principle, and both of them can run in parallel or backup each other.

Corresponding hydrogen peroxide liquid discharge ports are arranged in the first cationic resin tank 11, the first anionic resin tank 12 and the second cationic resin tank 13, as shown in the figure, a hydrogen peroxide liquid discharge port 111 is arranged on the first cationic resin tank 11, a hydrogen peroxide liquid discharge port 121 is arranged on the first anionic resin tank 12, and a hydrogen peroxide liquid discharge port 131 is arranged on the second cationic resin tank 13 so as to discharge hydrogen peroxide solution in the corresponding resin tanks; the hydrogen peroxide liquid outlet 111 of the first cationic resin tank 11 is connected with the hydrogen peroxide liquid inlet 122 of the first anionic resin tank, the hydrogen peroxide liquid outlet 121 of the first anionic resin tank is connected with the hydrogen peroxide liquid inlet 132 of the second cationic resin tank, and the hydrogen peroxide liquid outlet 131 of the second cationic resin tank 13 is connected with the outside so as to discharge hydrogen peroxide after phosphorus ions are removed by the phosphorus ion removal system. Similarly, a hydrogen peroxide liquid outlet 141 and a hydrogen peroxide liquid inlet 142 are formed in the third cationic resin tank 14, a hydrogen peroxide liquid outlet 151 and a hydrogen peroxide liquid inlet 152 are formed in the second anionic resin tank 15, a hydrogen peroxide liquid outlet 161 and a hydrogen peroxide liquid inlet 162 are formed in the fourth cationic resin tank 16, and the connection relationship between the hydrogen peroxide liquid inlet and the hydrogen peroxide liquid outlet in the second phosphorus ion removal system is the same as that in the first phosphorus ion removal system, which is not described herein again.

In the embodiment of the invention, the experimental device for dephosphorization pilot scale further comprises:

a hydrogen peroxide input pipe 171 connected to the hydrogen peroxide inlet 112 of the first cationic resin tank 11; a hydrogen peroxide solution containing phosphorus ions is input into the first cationic resin tank 11; removing phosphorus ions in the input hydrogen peroxide solution by adsorption of the resins in the first cation resin tank 11, the first anion resin tank 12 and the second cation resin tank 13; the valve 201 may be set on the hydrogen peroxide input pipe 171, so that whether the hydrogen peroxide input pipe 171 is conducted or not is controlled by opening and closing the valve 201.

A common pipe 172 for the dephosphorizing solution, which is connected to the first cation resin tank 11, the anion resin tank 12 and the second cation resin tank 13;

an acid solution input line 173 connected to the common line 172 for the dephosphorizing solution for inputting an acid solution to the first cationic resin tank 11, the first anionic resin tank 12 and the second cationic resin tank 13;

an alkaline solution supply line 175 connected to the common line 172 for supplying an alkaline solution to the first cationic resin tank 11, the first anionic resin tank 12, and the second cationic resin tank 13;

a neutral solution input pipe 174 connected to the common pipe 172 for the dephosphorizing solution, for inputting the neutral solution to the first cationic resin tank 11, the first anionic resin tank 12 and the second cationic resin tank 13;

removing phosphorus ions in the hydrogen peroxide through resin adsorption in a first cation resin tank 11, a first anion resin tank 12 and a second cation resin tank 13, and adsorbing the phosphorus ions on the surface of the resin; and then, acidic solution, alkaline solution and neutral solution are introduced into the first cation resin tank 11, the first anion resin tank 12 and the second cation resin tank 13, so that phosphorus ions adsorbed by the resin in the first cation resin tank 11, the first anion resin tank 12 and the second cation resin tank 13 are removed, and the purposes of resin regeneration and recycling are achieved.

The dephosphorization pilot test experimental device provided by the embodiment of the invention can remove phosphorus ions in hydrogen peroxide through the adsorption effect of resin, and then acid solution, alkaline solution and neutral solution are sequentially input into the first cationic resin tank, the anionic resin tank and the second cationic resin tank, so that the phosphorus ions adsorbed on the surfaces of the resin in the three resin tanks are removed, and the purpose of resin regeneration is realized, so that the dephosphorization pilot test experimental device in the scheme can be continuously recycled.

In an embodiment of the present invention, the apparatus further includes a cooler 18, which is respectively connected to the first cationic resin tank 11 and the hydrogen peroxide input pipeline 171, and is configured to cool the hydrogen peroxide containing the phosphorous ions input by the hydrogen peroxide input pipeline. In the embodiment of the invention, the input hydrogen peroxide raw material containing phosphorus ions is cooled by the cooler, so that the temperature of hydrogen peroxide entering the first cationic resin tank 11 is ensured, and the reaction rate of the first cationic resin tank is further ensured.

Further, the pilot experiment device for dephosphorization in the embodiment of the present invention further includes:

the chilled water inlet pipeline 176 is respectively connected with the cooler and the first anion resin tank;

and the chilled water self-return pipeline 177 is respectively connected with the cooler and the first anion resin tank and is used for returning chilled water passing through the cooler and the anion resin tank.

In the embodiment of the invention, the chilled water is connected with the cooler from the water inlet pipeline to achieve the purpose of inputting the chilled water into the cooler, and the chilled water self-return pipeline is connected with the cooler and used for enabling the chilled water flowing into the cooler to flow back, thereby achieving the technical effect of cooling the phosphorus-containing hydrogen peroxide raw material flowing through the cooler. In a similar way, the chilled water is fed from the water inlet pipeline and the chilled water is fed from the water return pipeline, so that the anion resin tank is cooled, and the reaction rate and the efficiency of the first anion resin tank and the second cation resin tank are further ensured.

Further, in the embodiment of the present invention, a first valve 191 is disposed between the chilled water inlet pipe 176 and the cooler 18, and is used for controlling whether the water of the chilled water inlet pipe flows into the cooler; a second valve 192 is provided between the chilled water self-returning pipe 177 and the cooler 18 to control whether the chilled water flowing into the cooler flows out. The first valve 191 and the second valve 192 control the outflow and inflow of the chilled water in the chiller 18.

Meanwhile, in the embodiment of the present invention, a third valve 193 is provided between the chilled water inlet pipe 176 and the first anion resin tank 12, for controlling whether the water of the chilled water from the inlet pipe 176 flows into the first anion resin tank 12; a fourth valve 194 is disposed between the chilled water self-return pipe 177 and the first anion resin tank 12, and is used for controlling whether the chilled water flowing into the first anion resin tank 12 flows out.

Meanwhile, the pilot experimental device for dephosphorization provided by the embodiment of the invention further comprises:

the refrigerating unit 21 is connected with the chilled water self-inlet pipeline 176 and the chilled water self-return pipeline 177 respectively, and is used for receiving and cooling chilled water returning from the return pipeline 177 and providing chilled water for the chilled water from the inlet pipeline 176.

In the embodiment of the present invention, the pilot plant experimental apparatus for dephosphorization further comprises:

and a first filter 22 disposed on the common pipe for the de-phosphorization solution for filtering the inputted acidic solution, alkaline solution or neutral solution.

In the embodiment of the present invention, the experimental apparatus for dephosphorization pilot plant further includes a second filter 23 for filtering the hydrogen peroxide discharged from the second cationic resin 13 tank. Therefore, the purity of the hydrogen peroxide discharged from the second cationic resin tank can be ensured, and the environmental pollution is avoided.

In the embodiment of the present invention, the first cation resin tank 11, the first anion resin tank 12 and the second cation resin tank 13 are all provided with a blowdown pipe, each blowdown pipe is provided with a corresponding blowdown valve, and the state of the blowdown pipe is controlled by controlling the on-off of the blowdown valves.

Referring to the drawings, in the first phosphorus ion removal system, a blowdown valve 113 is provided on the first cation resin tank 11, a blowdown valve 123 is provided on the first anion resin tank 12, and a blowdown valve 133 is provided on the second cation resin tank; similarly, in the second phosphorus ion removal system, a drain valve 143 is provided in the third cationic resin tank 14, a drain valve 153 is provided in the second anionic resin tank 15, and a drain valve 163 is provided in the fourth cationic resin tank 16.

In the embodiment of the present invention, it is,

a ninth valve 114 is arranged between the first cation resin tank 11 and the first anion resin tank 12 and is used for controlling whether hydrogen peroxide in the first cation resin tank 11 flows into the first anion resin tank 12 or not;

a tenth valve 124 is arranged between the first anion resin tank 12 and the second cation resin tank 13 and is used for controlling whether hydrogen peroxide in the first anion resin tank 12 flows into the second cation resin tank 13 or not;

an eleventh valve 134 is arranged on the liquid discharge pipe of the second cationic resin tank 13 and is used for controlling the discharge of hydrogen peroxide in the second cationic resin tank 13; similarly, the twelfth valve 144, the thirteenth valve 154 and the fourteenth valve 164 are also disposed in the second phosphorus ion removal system, and the connection relationship and the operation principle between the valves and the resin tank are similar to those in the first phosphorus ion removal system, which is not described herein again.

The method for removing the phosphorus ions in the hydrogen peroxide by using the pilot plant experimental device provided by the embodiment of the invention is illustrated as follows:

step S11, opening the first valve 191, the second valve 192, the third valve 193, the fourth valve 194, the fifth valve 195, the sixth valve 196, the seventh valve 197, and the eighth valve 198, and starting the refrigerating unit 21, thereby achieving the purpose of cooling the resin tanks (including the first cationic resin tank, the first anionic resin tank, and the second cationic resin tank) in each phosphorus ion removal system (including the first phosphorus ion removal system and the second phosphorus ion removal system);

step S12, continuing to open the ninth valve 114, the tenth valve 124 and the twenty-sixth valve 199, and inputting hydrogen peroxide containing phosphorus ions from the hydrogen peroxide input pipeline 171 to the cooler 18, wherein if the hydrogen peroxide is 50%, 50% of the hydrogen peroxide enters the cooler 18 for cooling, and the outlet temperature of the hydrogen peroxide of the cooler 18 can be 5 ℃ ± 3 ℃;

step S13, 50% of hydrogen peroxide enters the first cationic resin tank 11 from the cooler 18, and the input 50% of hydrogen peroxide is subjected to first-stage dephosphorization through the adsorption effect of the cationic resin in the first cationic resin tank 11;

step S14, allowing the primarily dephosphorized hydrogen peroxide to enter a first anion resin tank 12 from a first cation resin tank 11, and performing secondary dephosphorizing through the adsorption action of anion resin in the first anion resin tank 12, wherein heat is released in the process, so that the first anion resin tank 12 is connected with a refrigerating unit 21, chilled water is input into the first anion resin tank 12 from a water inlet pipeline through chilled water to cool the hydrogen peroxide in the first anion resin tank 12, and the outlet temperature of the hydrogen peroxide in the first anion resin tank 12 is 5 +/-3 ℃;

step S15, allowing the hydrogen peroxide subjected to secondary dephosphorization in the first anionic resin tank 12 to enter the second cationic resin tank 13 from the first anionic resin tank 12, and performing tertiary dephosphorization on the hydrogen peroxide subjected to secondary dephosphorization in the first anionic resin tank 12 through the adsorption effect of the cationic resin in the second cationic resin tank 13;

step S16, allowing the hydrogen peroxide subjected to three-stage dephosphorization in the second cationic resin tank 13 to enter the device boundary area from the eleventh valve 134 of the hydrogen peroxide liquid outlet 131 of the second cationic resin tank 13;

it is noted that the first phosphorus ion removal system and the second phosphorus ion removal system are two parallel phosphorus ion removal systems, and the working principle and the working process of the two phosphorus ion removal systems are similar, and the second phosphorus ion removal system is not described herein again.

In the embodiment of the present invention, after phosphorus ions in hydrogen peroxide are dephosphorized, the phosphorus ions are adsorbed by resin in a resin tank (including a first cation resin tank, an anion resin tank and a second cation resin tank) in a phosphorus ion removal system, so that the phosphorus ions are adsorbed on the surface of the resin, the resin cannot be reused, and if the resin is discarded, the resin is greatly wasted and causes great pollution to the environment, and thus, the apparatus provided by the embodiment of the present invention can be further used for resin regeneration, and the specific steps are as follows:

step S21, cleaning the resin in the first cation resin tank, the first anion resin tank and the second cation resin tank by using an acid solution;

the specific process is as follows:

1) controlling the first valve 191, the second valve 192, the third valve 193, the fourth valve 194, the fifth valve 195, the sixth valve 196, the seventh valve 197 and the eighth valve 198 to be in a closed state, and closing the refrigerating unit 21; and controlling the ninth valve 114, the tenth valve 124 and the twenty-sixth valve 199 to be in a closed state;

2) the sixteenth valve 221 is opened, the acid solution is input from the acid solution input pipe 173, the acid solution enters the first cationic resin tank 11 through the common pipe 172 for the de-phosphating solution, the volume of the acid entering the first cationic resin tank 11 is determined according to actual requirements, and when the volume of the injected acid solution reaches the required volume, the sixteenth valve 221 is closed. The acidic solution is immersed in the first cationic resin tank 11 for 45 to 60 minutes to replace all the phosphorus ions in the acidic solution, thereby regenerating the resin in the first cationic resin tank 11. Opening a drain valve 113 before a ninth valve 114 to discharge the acidic solution from the first cation resin tank 11 to corresponding equipment; if the concentration of the phosphorus ions is too high, the operation can be repeated for several times to completely replace the phosphorus ions;

5) the seventeenth valve 222 is opened, the acid solution is input from the acid solution input pipe 173, the acid solution enters the first anion resin tank 12 through the common pipe 172 for dephosphorizing solution, the volume of the acid entering the first anion resin tank 12 is determined according to actual requirements, and the seventeenth valve 222 is closed when the volume of the injected acid solution reaches the required volume. The acidic solution is immersed in the first anion resin tank 12 for 45 to 60 minutes to replace all the phosphorus ions in the acidic solution, thereby regenerating the resin in the first anion resin tank 12. Opening a blowdown valve 123 before the tenth valve 124 to discharge the acidic solution from the first anion resin tank 12 to a corresponding device; if the concentration of the phosphorus ions is too high, the operation can be repeated for several times to completely replace the phosphorus ions;

6) the eighteenth valve 223 is opened, the acid solution input pipeline 173 inputs the acid solution, the acid solution enters the second cationic resin tank 13 through the common dephosphorizing solution pipeline 172, the volume of the acid entering the second cationic resin tank 13 is determined according to actual requirements, and when the volume of the injected acid solution reaches the required volume, the eighteenth valve 223 is closed. The acidic solution is immersed in the second cationic resin tank 13 for 45 to 60 minutes to replace all the phosphorus ions in the acidic solution, thereby regenerating the resin in the second cationic resin tank 13. A blowdown valve 133 before an eleventh valve 134 is opened, so that the acidic solution is discharged from the second cationic resin tank 13 and can be discharged into corresponding equipment; if the concentration of the phosphorus ions is too high, the operation can be repeated for several times to completely replace the phosphorus ions;

it is noted that a nineteenth valve 202 may be disposed on the acidic solution input pipeline 173, and the nineteenth valve 202 controls the connection or disconnection of the acidic solution input pipeline 173, and thus controls whether to input the acidic solution.

In an embodiment of the present invention, the acidic solution may be a 20% hydrochloric acid solution.

Step S22, cleaning the resin in the first cation resin tank, the anion resin tank and the second cation resin tank by using an alkaline solution; the specific process can be as follows:

alkaline washing process

1) Controlling the first valve 191, the second valve 192, the third valve 193, the fourth valve 194, the fifth valve 195, the sixth valve 196, the seventh valve 197 and the eighth valve 198 to be in a closed state, and closing the refrigerating unit 21; and controlling the ninth valve 114, the tenth valve 124 and the twenty-sixth valve 199 to be in a closed state;

2) the sixteenth valve 221 is opened, the alkaline solution is input from the alkaline solution input pipe 175, the alkaline solution enters the first cationic resin tank 11 through the common dephosphorizing solution pipe 172, the volume of the alkaline solution entering the first cationic resin tank 11 is determined according to actual requirements, and when the volume of the injected alkaline solution reaches the required volume, the sixteenth valve 221 is closed. The alkaline solution is immersed in the first cationic resin tank 11 for 45 to 60 minutes to replace all the phosphorus ions in the alkaline solution, thereby regenerating the resin in the first cationic resin tank 11. A blowdown valve 113 before the ninth valve 114 is opened, so that a neutralized solution obtained by neutralizing the acid solution with the alkaline solution is discharged from the first cation resin tank 11 and can be discharged into corresponding equipment; if the concentration of the phosphorus ions is too high, the operation can be repeated for several times to completely replace the phosphorus ions;

5) the seventeenth valve 222 is opened, the alkaline solution is input from the alkaline solution input pipe 175, the alkaline solution enters the first anion resin tank 12 through the common dephosphorizing solution pipe 172, the volume of the alkaline solution entering the anion resin tank 12 is determined according to actual requirements, and the seventeenth valve 222 is closed when the volume of the injected alkaline solution reaches the required volume. The alkaline solution is immersed in the anion resin tank 12 for 45 to 60 minutes, so that all the phosphorus ions are replaced in the alkaline solution, and the resin in the anion resin tank 12 is regenerated. A blowdown valve 123 before the tenth valve 124 is opened, so that a neutralized solution obtained by neutralizing the acid solution with the alkaline solution is discharged from the first anion resin tank 12 and can be discharged into corresponding equipment; if the concentration of the phosphorus ions is too high, the operation can be repeated for several times to completely replace the phosphorus ions;

6) the eighteenth valve 223 is opened, the alkaline solution is input from the alkaline solution input pipe 175, the alkaline solution enters the second cationic resin tank 13 through the common dephosphorizing solution pipe 172, the volume of the alkaline solution entering the second cationic resin tank 13 is determined according to actual requirements, and when the volume of the injected alkaline solution reaches the required volume, the eighteenth valve 223 is closed. The alkaline solution is immersed in the second cationic resin tank 13 for 45 to 60 minutes to replace all the phosphorus ions in the alkaline solution, thereby regenerating the resin in the second cationic resin tank 13. A drain valve 133 before an eleventh valve 134 is opened, so that a neutralized solution obtained by neutralizing the acid solution with the alkaline solution is discharged from the second cationic resin tank 13 and can be discharged into corresponding equipment; if the concentration of the phosphorus ions is too high, the operation can be repeated for several times to completely replace the phosphorus ions;

it is noted that a twentieth valve 204 may be disposed on the alkaline solution input line 175, and the twentieth valve 204 controls the opening and closing of the alkaline solution input line 175, and thus controls whether to input the alkaline solution.

In the embodiment of the present invention, the volume of the alkaline solution to be supplied may be determined according to the PH of the solution in the resin tank.

In an embodiment of the present invention, the alkaline solution may be a 30% -40% strength sodium hydroxide solution.

Step S23, washing the resin in the first cation resin tank, the anion resin tank and the second cation resin tank by using a neutral solution;

1) controlling the first valve 191, the second valve 192, the third valve 193, the fourth valve 194, the fifth valve 195, the sixth valve 196, the seventh valve 197 and the eighth valve 198 to be in a closed state, and closing the refrigerating unit 21; and controlling the ninth valve 114, the tenth valve 124 and the twenty-sixth valve 199 to be in a closed state;

2) the sixteenth valve 221 is opened, the neutral solution is input from the neutral solution input pipe 174, the neutral solution enters the first cationic resin tank 11 through the common de-phosphorizing solution pipe 172, the volume of the neutral solution entering the first cationic resin tank 11 is determined according to actual requirements, and when the volume of the neutral solution to be injected reaches the required volume, the sixteenth valve 221 is closed. The neutral solution is soaked in the first cation resin tank 11 for 15-25 minutes, and the drain valve 113 before the ninth valve 114 is opened, so that the neutral solution is discharged from the drain valve 113 and can be discharged into corresponding equipment.

3) The seventeenth valve 222 is opened, the neutral solution is input from the neutral solution input pipe 174, the neutral solution enters the first anion resin tank 12 through the common dephosphorizing solution pipe 172, the volume of the neutral solution entering the first anion resin tank 12 is determined according to actual requirements, and when the volume of the neutral solution to be injected reaches the required volume, the seventeenth valve 222 is closed. The neutral solution is soaked in the first anion resin tank 12 for 15-25 minutes, and the drain valve 123 before the tenth valve 124 is opened, so that the neutral solution is discharged from the drain valve 123 and can be discharged into corresponding equipment.

4) And opening an eighteenth valve 223, inputting the neutral solution from the neutral solution input pipeline 174, enabling the neutral solution to enter the second cationic resin tank 13 through the dephosphorizing solution common pipeline 172, determining the volume of the neutral solution entering the second cationic resin tank 13 according to actual requirements, and closing the eighteenth valve 223 when the volume of the injected neutral solution reaches the required volume. The neutral solution is soaked in the second cation resin tank 13 for 15-25 minutes, and the drain valve 133 before the eleventh valve 134 is opened, so that the neutral solution is discharged from the drain valve 133 and can be discharged into corresponding equipment.

It is noted that a fifteenth valve 203 may be disposed on the neutral solution input pipe 174, and the neutral solution input pipe 174 is controlled to be opened or closed by the fifteenth valve 203, so as to control whether the neutral solution is input.

In an embodiment of the invention, the neutral solution may be water.

It is noted that the chemical reaction in the reaction vessel is a batch reaction, and after one chemical reaction is completed, the reaction vessel may be emptied and then the next chemical reaction may be performed using the reaction vessel.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.