A coolant purifying resin, a purifying resin column, and an application

Abstract

The present application relates to the technical field of cooling liquid purification, in particular to a cooling liquid purification resin, a purification resin column and application. The cooling liquid purification resin comprises oxygen removal resin, sterilization resin, salt removal resin and pH value adjustment resin; the volume ratio of the oxygen removal resin, the sterilization resin, the salt removal resin and the pH value adjustment resin is 20:0.5:79:0.5. The present application solves the problem that the electronic components are damaged due to the corrosion of pipelines and cold plates caused by dissolved oxygen, impurity ions and bacteria in the cooling liquid in the data center cold cutting system. The cooling liquid purification resin can remove the dissolved oxygen, bacteria and impurity ions in the supplemented new cooling liquid, and can also remove the trace impurity ions generated in the circulation heat transfer process of the cooling liquid, so as to reduce the electric conductivity of the cooling liquid, maintain the electric conductivity of the cooling liquid below 2 mu s / cm, and prevent the corrosion of the equipment pipeline and the damage of the electronic components caused by the conduction.

Description

Technical Field

[0001] This invention relates to the field of coolant purification technology, and in particular to a coolant purification resin, a purification resin column, and its application. Background Technology

[0002] With the development of information and communication technology, the power consumption per data center rack is gradually increasing. Traditional air-cooled air conditioners can cause different heat-generating components to become either "overcooled" or "overheated." This method, which cannot achieve precise cooling of heat-generating components, can only reduce the temperature of "overheated" components by increasing the cooling capacity of the server room air conditioner or lowering the supply air temperature, but this leads to excessive energy waste. Liquid cooling technology is gradually becoming a green, energy-saving, and low-carbon cooling technology for data centers. Liquid cooling technology directly cools the equipment with liquid, carrying away the heat generated by the heat-generating components directly.

[0003] Liquid cooling technologies include cold plate type, immersion type, and spray type. Cold plate type liquid cooling uses coolant flowing in a cold plate for non-contact heat dissipation. It requires minimal modification to existing server chip components and accessories, and is currently one of the earliest and most mature liquid cooling solutions.

[0004] The cold plate is a core component that contacts the chip for heat exchange. The coolant flows internally, carrying away heat from the chip. The coolant, having absorbed heat, enters the evaporator / condenser to release the heat. The cooled coolant then returns to the cold plate to absorb heat, and this process repeats. Cold plates are typically made of highly thermally conductive materials such as copper or aluminum. During circulation and replenishment, bacterial metabolic byproducts, including acidic substances and slime, cause the coolant to become slightly acidic, containing oxygen. This corrodes pipes and the cold plate, releasing metal ions. The recirculated coolant also produces solid particles that deposit and form scale, clogging pipes and the cold plate, reducing heat transfer efficiency. Furthermore, under-deposit corrosion can cause perforation of the cold plate, leading to coolant leakage and potentially short circuits and damage to electronic components.

[0005] To avoid this problem, the circulating coolant usually needs to be treated, such as by adding corrosion inhibitors and bactericides. However, this can lead to an increase in the conductivity of the coolant, which can cause adverse consequences. A mixed resin composed of hydrogen-form cation exchange resin and hydroxyl-form anion exchange resin is usually used to purify the coolant. The resin removes impurities in the coolant through ion exchange. The pH of the water treated by the mixed bed resin is 6.5~7. Under these weakly acidic conditions, pipes and cold plates may be at risk of corrosion.

[0006] Coolant is the heat transfer medium in the cooling system. Coolant contains dissolved oxygen, impurity ions, bacteria and other substances, which can corrode the circulating pipes and cold plates. Using hydrogen-form cation resin and hydrogen-oxygen anion resin to purify the coolant has certain problems in use.

[0007] 1. The purified coolant has a weakly acidic pH, which can cause corrosion to pipes and cold plates.

[0008] 2. Dissolved oxygen in the coolant cannot be removed, and dissolved oxygen in the coolant will lead to accelerated corrosion.

[0009] 3. Bacteria in the coolant cannot be removed. The metabolic products of bacteria contain various acids, which lower the pH of the coolant and cause corrosion of pipes and cold plates. In addition, bacterial communities form slime and scale, which clogs pipes and cold plates, resulting in a decrease in heat transfer efficiency. Summary of the Invention

[0010] To address the aforementioned issues, the coolant purification resin provided by this invention is a highly efficient and multifunctional resin that has the functions of deoxygenation, sterilization, reducing conductivity, and stabilizing pH, enabling the data center cooling system to operate safely and stably and greatly reducing the risk of data center failures.

[0011] To achieve the above objectives, the present invention provides the following technical solution:

[0012] This invention provides a coolant purification resin, comprising an oxygen-removing resin, a bactericidal resin, a desalination resin, and a pH-adjusting resin; the volume ratio of the oxygen-removing resin, bactericidal resin, desalination resin, and pH-adjusting resin is 20:0.5:79:0.5.

[0013] The desalination resin includes a hydrogen-form cation resin and a hydroxide-form anion resin, wherein the volume ratio of the hydrogen-form cation resin to the hydroxide-form anion resin is 1:1.

[0014] Preferably, the oxygen-scavenging resin contains sulfite ions;

[0015] The bactericidal resin contains silver and / or iodine elements;

[0016] The pH value resin mentioned includes sodium-type cation exchange resin.

[0017] Preferably, the method for preparing the oxygen-removing resin includes the following steps:

[0018] Styrene-based strong base anion resin is packed into a resin column. Sodium sulfite solution is passed through the resin layer from top to bottom at a flow rate of 2 times the volume of styrene-based strong base anion resin per hour. Water is then passed through the resin layer from top to bottom at a flow rate of 4 times the volume of styrene-based strong base anion resin per hour until the conductivity of the rinsing water is less than 5 µs / cm. The solution is then filtered dry to obtain the deoxygenating resin.

[0019] The concentration of the sodium sulfite solution is 1 mol / L;

[0020] The volume ratio of the styrene-based strong base anion exchange resin to sodium sulfite is 1:5.

[0021] Preferably, the method for preparing the bactericidal resin includes the following steps:

[0022] The resin is packed into a resin column. The bactericidal solution is passed through the resin layer from top to bottom at a flow rate of 2 times the resin volume per hour. Then, water is passed through the resin layer from top to bottom at a flow rate of 4 times the resin volume per hour until the conductivity of the rinsing water is less than 5µs / cm. The solution is then filtered dry to obtain the bactericidal resin.

[0023] The resin includes styrene-based strong base anion resin or styrene-based strong acid cation resin;

[0024] The bactericidal solution includes a potassium iodide solution or a silver nitrate solution, wherein the concentration of potassium iodide is 1 mol / L and the concentration of silver nitrate is 1 mol / L.

[0025] The volume ratio of the resin to the iodine sterilization solution is 1:5.

[0026] Preferably, the method for preparing the desalination resin includes the following steps:

[0027] 1) Styrene-based strong acid cation resin is packed into a resin column. Hydrochloric acid solution is passed through the resin layer from top to bottom at a flow rate of 2 times the resin volume per hour. Water is then passed through the resin layer from top to bottom at a flow rate of 4 times the resin volume per hour until the conductivity of the rinsing water is less than 2µs / cm. The solution is then filtered dry to obtain hydrogen-form cation resin.

[0028] The volume ratio of the styrene-based strong acid cation exchange resin to the hydrochloric acid solution is 1:5;

[0029] The concentration of the hydrochloric acid solution is 1 mol / L;

[0030] 2) Styrene-based strong base anion resin is packed into a resin column. Sodium hydroxide solution is passed through the resin layer from top to bottom at a flow rate of 2 times the resin volume per hour. Water is then passed through the resin layer from top to bottom at a flow rate of 4 times the resin volume per hour until the conductivity of the rinsing water is less than 2µs / cm. After filtration, hydroxyl anion resin is obtained.

[0031] The volume ratio of the styrene-based strong base anion exchange resin to the sodium hydroxide solution is 1:5;

[0032] The concentration of the sodium hydroxide solution is 1 mol / L;

[0033] 3) Mix the hydrogen-form cation resin obtained in step 1) and the hydroxide-form anion resin obtained in step 2) to obtain a desalination resin.

[0034] Preferably, the method for preparing the pH-adjusting resin includes the following steps:

[0035] A weak acid cation exchange resin is packed into a resin column. Sodium hydroxide solution is passed through the resin layer from top to bottom at a flow rate of 2 times the volume of the weak acid cation exchange resin per hour. Water is then passed through the resin layer from top to bottom at a flow rate of 4 times the volume of the weak acid cation exchange resin per hour until the pH of the rinsing water is ≤12. The solution is then filtered to obtain a pH-adjusting resin.

[0036] The weak acid cation resin includes acrylic weak acid cation resin or styrene weak acid cation resin.

[0037] The volume ratio of the weak acid cation exchange resin to the sodium hydroxide solution is 1:5;

[0038] The concentration of the sodium hydroxide solution is 1 mol / L.

[0039] The present invention also provides the application of the coolant purification resin described in the above technical solution in coolant purification.

[0040] This invention provides a purification resin column for coolant, wherein the purification resin column consists of pH-adjusting resin, desalination resin, bactericidal resin and deoxygenating resin arranged sequentially from bottom to top;

[0041] The volume ratio of the pH-adjusting resin to the desalination resin, bactericidal resin, and oxygen-removing resin is 0.5:79:0.5:20.

[0042] The present invention also provides the application of the purification resin column described in the above technical solution in coolant purification.

[0043] Preferably, the application includes the following steps: passing the coolant from bottom to top through a purification resin column at a flow rate of 500 L / h.

[0044] The beneficial effects of this invention are as follows:

[0045] This invention solves the problem of short-circuit damage to electronic components caused by corrosion of pipes and cold plates due to dissolved oxygen, impurity ions, and bacteria in the coolant of data center cooling systems. By using coolant purification resin, dissolved oxygen, bacteria, and impurity ions are first removed from the newly added cooling fluid. Additionally, trace impurity ions generated during the coolant's circulating heat transfer process are removed, reducing the cooling fluid's conductivity to below 2µs / cm. This prevents corrosion of equipment pipes and electrical conduction from damaging electronic components.

[0046] Applications of coolant purification resin:

[0047] In a cold plate liquid cooling system for data centers, the coolant flows through circulation pipes to carry away the heat from the chips. The coolant, having absorbed the heat, enters an evaporator-condenser to release the heat. The cooled coolant then returns to the cold plate to absorb heat, and this process repeats.

[0048] The purification process for coolant involves filling a resin column with purifying resin. As the coolant passes through the resin column, impurities are removed through adsorption and exchange, thus achieving purification.

[0049] The resin is filled into the resin column, and the resin column is cleaned with pure water. The pH-adjusting resin is filled at the bottom of the resin column, followed by the desalination resin. Then, the bactericidal resin is added on top of the desalination resin, and finally, the deoxygenating resin is filled on the top layer. Using one resin column, it can simultaneously perform the functions of deoxygenation, sterilization, desalination, and pH adjustment, thereby achieving the purpose of purifying the coolant.

[0050] The circulating coolant and the replenished fresh coolant pass through a resin column. First, they pass through a deoxygenating resin, where dissolved oxygen in the coolant reacts with sulfite ions on the deoxygenating resin in a redox reaction, converting sulfite ions into sulfate ions that remain bound to the resin. This process removes oxygen without introducing new impurities. Next, they pass through a bactericidal resin, where bacteria in the cooling fluid are killed by silver or iodine elements on the bactericidal resin. The dead bacteria are then adsorbed and retained by the desalination resin, preventing them from entering the circulation system. Finally, the coolant passes through a desalination resin, where chemical exchange removes impurity cations and anions from the cooling fluid onto the resin, producing water. This process does not introduce new impurities that could cause secondary pollution to the cooling fluid. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the embodiments will be briefly described below.

[0052] Figure 1 This is a schematic diagram of a data center circulating coolant purification system, where 1 is a makeup water tank for storing replenished coolant; 2 is a resin column for filling with purification resin; 3 is a precision filter for filtering suspended impurities; 4 is a coolant tank for storing circulating coolant; 5 is a heat exchanger for cooling the coolant; and 6 is a central processing unit (CPU) for cooling electronic components. Detailed Implementation

[0053] This invention provides a coolant purification resin, comprising an oxygen-removing resin, a bactericidal resin, a desalination resin, and a pH-adjusting resin; the volume ratio of the oxygen-removing resin, bactericidal resin, desalination resin, and pH-adjusting resin is 20:0.5:79:0.5; the desalination resin comprises a hydrogen-form cation resin and a hydroxide-form anion resin, the volume ratio of the hydrogen-form cation resin and the hydroxide-form anion resin being 1:1. In this invention, the oxygen-removing resin contains sulfite ions; the bactericidal resin contains silver and / or iodine elements; and the pH-adjusting resin comprises a sodium-form cation resin.

[0054] In this invention, the preferred method for preparing the deoxygenating resin includes the following steps: a styrene-based strong base anion resin is packed into a resin column; a sodium sulfite solution is passed through the resin layer from top to bottom at a flow rate twice the volumetric flow rate of the styrene-based strong base anion resin per hour; water is then passed through the resin layer from top to bottom at a flow rate four times the volumetric flow rate of the styrene-based strong base anion resin per hour until the conductivity of the rinsing water is less than 5 µS / cm; the solution is then filtered dry to obtain the deoxygenating resin. In this invention, the concentration of the sodium sulfite solution is preferably 1 mol / L. In this invention, the volume ratio of the styrene-based strong base anion resin to sodium sulfite is preferably 1:5. In this invention, the deoxygenating resin is a resin with reducing groups. By adding a sulfite solution (sodium sulfite, ammonium sulfite, potassium sulfite, etc.) to the anion resin (styrene-based or acrylic-based strong or weak base anion resin), the functional groups of the resin acquire sulfite reducing groups. When the coolant passes through the deoxygenating resin, the dissolved oxygen in the coolant undergoes a redox reaction with the sulfite ions, achieving the purpose of deoxygenation. In this invention, the styrene-based strong base anion resin is sourced from Ningbo Zhengguang Resin Co., Ltd., and its model number is 201X7.

[0055] In this invention, the preparation method of the bactericidal resin preferably includes the following steps: filling the resin into a resin column, passing the bactericidal solution through the resin layer from top to bottom at a flow rate of twice the resin volume per hour, then passing water through the resin layer from top to bottom at a flow rate of four times the resin volume per hour until the conductivity of the rinsing water is less than 5 µS / cm, filtering, and obtaining the bactericidal resin. In this invention, the resin preferably comprises a styrene-based strong base anion exchange resin or a styrene-based strong acid cation exchange resin. In this invention, the bactericidal solution preferably comprises a potassium iodide solution or a silver nitrate solution, wherein the concentration of potassium iodide is preferably 1 mol / L, and the concentration of silver nitrate is preferably 1 mol / L. In this invention, the volume ratio of the resin to the iodine bactericidal solution is preferably 1:5. In this invention, the bactericidal resin is a resin containing bactericidal elements. Silver nitrate solution is added to a cation exchange resin (styrene-based or acrylic-based strong acid or weak acid cation exchange resin), and the functional groups of the resin contain silver elements; or potassium iodide solution is added to an anion exchange resin (styrene-based or acrylic-based strong base anion exchange resin), and the functional groups of the resin contain iodine elements. The bactericidal resin is typically a silver-loaded or iodine-loaded resin. The bactericidal mechanism of the resin mainly exhibits the effect of silver or iodine. Silver or iodine elements can destroy the cell membrane structure and protein structure of pathogenic microorganisms, rendering them inactive. Silver or iodine elements directly halogenate proteins, producing precipitation, causing microbial death. Due to the continued penetration of silver or iodine, the bactericidal effect reaches the interior of the protein. Cooling liquid passes through the bactericidal resin, killing the bacteria within. In this invention, the styrene-based strong acid cation exchange resin is sourced from Ningbo Zhengguang Resin Co., Ltd., model number 201X7. The styrene-based strong acid cation exchange resin is also sourced from Ningbo Zhengguang Resin Co., Ltd., model number 001X7.

[0056] In this invention, the method for preparing the desalination resin preferably includes the following steps:

[0057] 1) Styrene-based strong acid cation resin is packed into a resin column. Hydrochloric acid solution is passed through the resin layer from top to bottom at a flow rate of 2 times the resin volume per hour. Water is then passed through the resin layer from top to bottom at a flow rate of 4 times the resin volume per hour until the conductivity of the rinsing water is less than 2µs / cm. The solution is then filtered dry to obtain hydrogen-form cation resin.

[0058] The volume ratio of the styrene-based strong acid cation exchange resin to the hydrochloric acid solution is 1:5;

[0059] The concentration of the hydrochloric acid solution is 1 mol / L;

[0060] 2) Styrene-based strong base anion resin is packed into a resin column. Sodium hydroxide solution is passed through the resin layer from top to bottom at a flow rate of 2 times the resin volume per hour. Water is then passed through the resin layer from top to bottom at a flow rate of 4 times the resin volume per hour until the conductivity of the rinsing water is less than 2µs / cm. After filtration, hydroxyl anion resin is obtained.

[0061] The volume ratio of the styrene-based strong base anion exchange resin to the sodium hydroxide solution is 1:5;

[0062] The concentration of the sodium hydroxide solution is 1 mol / L;

[0063] 3) Mix the hydrogen-form cation resin obtained in step 1) and the hydroxide-form anion resin obtained in step 2) to obtain a desalination resin.

[0064] In this invention, the desalination resin is formed by mixing a hydrogen-form cation exchange resin and a hydroxide-form anion exchange resin under nitrogen protection. The hydrogen-form cation exchange resin is a strong acid cation exchange resin (styrene-based or acrylic-based strong acid or weak acid cation exchange resin) and the hydroxide-form anion exchange resin is a strong base anion exchange resin (styrene-based or acrylic-based strong base or weak base cation exchange resin). Impurity cations in the coolant react with the hydrogen-form cation exchange resin to release hydrogen ions, and impurity anions in the coolant react with the hydroxide-form anion exchange resin to release hydroxide ions. The hydrogen ions and hydroxide ions neutralize each other to produce water, thus achieving the purpose of desalination.

[0065] In this invention, the preferred method for preparing the pH-adjusting resin includes the following steps: a weak acid cation exchange resin is packed into a resin column; sodium hydroxide solution is passed through the resin layer from top to bottom at a flow rate twice the volume of the weak acid cation exchange resin per hour; water is then passed through the resin layer from top to bottom at a flow rate four times the volume of the weak acid cation exchange resin per hour until the pH of the rinsing water is ≤12; the solution is then filtered dry to obtain the pH-adjusting resin. In this invention, the weak acid cation exchange resin preferably includes an acrylic-based weak acid cation exchange resin or a styrene-based weak acid cation exchange resin. In this invention, the volume ratio of the weak acid cation exchange resin to the sodium hydroxide solution is preferably 1:5. In this invention, the concentration of the sodium hydroxide solution is preferably 1 mol / L. In this invention, the pH-adjusting resin is a sodium-type cation exchange resin, which is a weak acid cation exchange resin (acrylic-based or styrene-based weak acid cation exchange resin). Under cooling water rinsing, the functional groups of the sodium-type cation exchange resin undergo hydrolysis, releasing trace amounts of sodium hydroxide, stabilizing the pH of the coolant at 8-9 while simultaneously reducing the conductivity of the coolant to below the control requirements, typically less than 2 µS / cm. In this invention, the acrylic-based weak acid cation exchange resin is sourced from Ningbo Zhengguang Resin Co., Ltd., and its model number is D113; the styrene-based weak acid cation exchange resin is sourced from Ningbo Zhengguang Resin Co., Ltd., and its model number is D851.

[0066] The present invention also provides the application of the coolant purification resin described in the above technical solution in coolant purification.

[0067] The present invention also provides a purification resin column for coolant, wherein the purification resin column comprises, from bottom to top, a pH-adjusting resin, a desalination resin, a bactericidal resin, and an oxygen-removing resin. In the present invention, the preferred volume ratio of the pH-adjusting resin to the desalination resin, bactericidal resin, and oxygen-removing resin is 0.5:79:0.5:20.

[0068] The present invention also provides the application of the purification resin column described in the above technical solution in coolant purification.

[0069] In this invention, the application preferably includes the following steps: passing the coolant from bottom to top through a purification resin column at a flow rate of 500 L / h.

[0070] To further illustrate the present invention, the following detailed description is provided in conjunction with embodiments, but these should not be construed as limiting the scope of protection of the present invention.

[0071] Example 1

[0072] Industrial acrylic weak acid cation exchange resin was packed into a resin column. Five times the resin volume of 1 mol / L sodium hydroxide solution was passed through the resin layer from top to bottom at a flow rate of twice the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of four times the resin volume per hour until the pH of the rinsing water was ≤12. The solution was then filtered dry to obtain sodium cation exchange resin.

[0073] Industrial styrene-based strong acid cation exchange resin was packed into a resin column. A 1 mol / L hydrochloric acid solution (5 times the resin volume) was passed through the resin layer from top to bottom at a flow rate of 2 times the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of 4 times the resin volume per hour until the conductivity of the leaching water was less than 2 μS / cm. The solution was then filtered dry to obtain the hydrogen-form cation exchange resin. Similarly, industrial styrene-based strong base anion exchange resin was packed into a resin column. A 1 mol / L sodium hydroxide solution (5 times the resin volume) was passed through the resin layer from top to bottom at a flow rate of 2 times the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of 4 times the resin volume per hour until the conductivity of the leaching water was less than 2 μS / cm. The solution was then filtered dry to obtain the hydroxide-form anion exchange resin.

[0074] Industrial styrene-based strong base anion exchange resin was packed into a resin column. Five times the resin volume of 1 mol / L potassium iodide solution was passed through the resin layer from top to bottom at a flow rate of twice the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of four times the resin volume per hour until the conductivity of the rinsing water was less than 5 μs / cm. The solution was then filtered dry to obtain iodine-loaded bactericidal resin.

[0075] Industrial styrene-based strong base anion exchange resin was packed into a resin column. Five times the resin volume of 1 mol / L sodium sulfite solution was passed through the resin layer from top to bottom at a flow rate of twice the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of four times the resin volume per hour until the conductivity of the rinsing water was less than 5 μs / cm. The solution was then filtered dry to obtain the deoxygenating resin.

[0076] 500 ml of sodium-form resin was laid flat at the bottom of a 400 mm diameter resin column. Then, 79 L of a 1:1 mixture of hydrogen-form cation and hydroxide-form anion resins was added to the column. 500 ml of iodine-loaded bactericidal resin was spread on top of the mixture, followed by 20 L of deoxygenating resin. The coolant was then passed through the resin column from top to bottom at a flow rate of 500 L / h. Dissolved oxygen, coliform count, conductivity, and pH of the influent and effluent were measured. The operational data are shown in Table 1.

[0077] Table 1. Results of dissolved oxygen, coliform bacteria, conductivity, and pH in influent and effluent.

[0078] Indicator Name Water ingress Out of water Dissolved oxygen, mg / L 8426 0.078 coliform bacteria, CFU / L 625 9 Electrical conductivity, μs / cm 20 1.4 pH 6.85 8.43

[0079] Dissolved oxygen was measured using a HACH POLYMETRON 9825 instrument. Coliform bacteria concentration was determined according to GB / T5750-2006 Standard Examination Methods for Drinking Water. Conductivity was measured according to GB / T6908-2018 Analysis Methods for Boiler Water and Cooling Water. pH was measured according to GB / T6904-2018 Analysis Methods for Boiler Water and Cooling Water. Operational data shows that after purification with the combined resin, dissolved oxygen, coliform bacteria, and conductivity in the coolant significantly decreased and were controlled at low levels. The pH remained stable in a slightly alkaline environment, which passively degraded the metal components of equipment and pipes, minimizing corrosion. The improved coolant quality after resin purification significantly enhances the safety of equipment and pipelines, reducing the risk of damage to electronic components in the data center.

[0080] Example 2

[0081] Industrial styrene-based weak acid cation exchange resin was packed into a resin column. Five times the resin volume of 1 mol / L sodium hydroxide solution was passed through the resin layer from top to bottom at a flow rate of twice the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of four times the resin volume per hour until the pH of the rinsing water was ≤12. The solution was then filtered dry to obtain sodium-type cation exchange resin.

[0082] Industrial styrene-based strong acid cation exchange resin was packed into a resin column. A 1 mol / L hydrochloric acid solution (5 times the resin volume) was passed through the resin layer from top to bottom at a flow rate of 2 times the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of 4 times the resin volume per hour until the conductivity of the leaching water was less than 2 μS / cm. The solution was then filtered dry to obtain the hydrogen-form cation exchange resin. Similarly, industrial styrene-based strong base anion exchange resin was packed into a resin column. A 1 mol / L sodium hydroxide solution (5 times the resin volume) was passed through the resin layer from top to bottom at a flow rate of 2 times the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of 4 times the resin volume per hour until the conductivity of the leaching water was less than 2 μS / cm. The solution was then filtered dry to obtain the hydroxide-form anion exchange resin.

[0083] Industrial styrene-based strong base anion exchange resin was packed into a resin column. Five times the resin volume of 1 mol / L potassium iodide solution was passed through the resin layer from top to bottom at a flow rate of twice the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of four times the resin volume per hour until the conductivity of the rinsing water was less than 5 μs / cm. The solution was then filtered dry to obtain iodine-loaded bactericidal resin.

[0084] Industrial-grade styrene-based strong base anion exchange resin is packed into a resin column. A 1 mol / L sodium sulfite solution with a flow rate of 5 times the resin volume is passed through the resin layer from top to bottom at a flow rate of 2 times the resin volume per hour. Then, pure water is passed through the resin layer from top to bottom at a flow rate of 4 times the resin volume per hour until the conductivity of the rinsing water is less than 5 μs / cm. The solution is then filtered dry to obtain the deoxygenating resin.

[0085] 500 ml of sodium-form resin was evenly packed at the bottom of a 400 mm diameter resin column. Then, 79 L of a 1:1 mixture of hydrogen-form cation and hydroxide-form anion resins was added to the column. 500 ml of iodine-loaded bactericidal resin was spread evenly on top of the mixture, followed by 20 L of deoxygenating resin. The coolant was then passed through the resin column from top to bottom at a flow rate of 500 L / h. Dissolved oxygen, coliform count, conductivity, and pH of the influent and effluent were measured. The operational data are shown in Table 2.

[0086] Table 2. Dissolved oxygen, coliform bacteria, conductivity, and pH of influent and effluent

[0087] Indicator Name Water ingress Out of water Dissolved oxygen, mg / L 8017 0.089 Escherichia coli, CFU / L 821 11 Electrical conductivity, μs / cm 18 1.3 pH 6.78 8.39

[0088] Dissolved oxygen was measured using a HACH POLYMETRON 9825 instrument. Coliform bacteria concentration was determined according to GB / T5750-2006 Standard Test Methods for Drinking Water. Conductivity was measured according to GB / T6908-2018 Analysis Methods for Boiler Water and Cooling Water. pH was measured according to GB / T6904-2018 Analysis Methods for Boiler Water and Cooling Water. By replacing the sodium-type cation exchange resin with a styrene-based cation exchange resin, the coolant underwent purification. Dissolved oxygen, coliform bacteria, and conductivity in the water significantly decreased, maintaining low levels. The pH remained stable in a slightly alkaline environment, which passively degraded the metal components of equipment and pipes, minimizing corrosion. The purified coolant exhibited superior water quality, significantly improving the safety of equipment and pipelines and reducing the risk of damage to electronic components in the data center.

[0089] Example 3

[0090] Industrial styrene-based weak acid cation exchange resin was packed into a resin column. Five times the resin volume of 1 mol / L sodium hydroxide solution was passed through the resin layer from top to bottom at a flow rate of twice the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of four times the resin volume per hour until the pH of the rinsing water was ≤12. The solution was then filtered dry to obtain sodium-type cation exchange resin.

[0091] Industrial styrene-based strong acid cation exchange resin was packed into a resin column. A 1 mol / L hydrochloric acid solution (5 times the resin volume) was passed through the resin layer from top to bottom at a flow rate of 2 times the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of 4 times the resin volume per hour until the conductivity of the leaching water was less than 2 μS / cm. The solution was then filtered dry to obtain the hydrogen-form cation exchange resin. Similarly, industrial styrene-based strong base anion exchange resin was packed into a resin column. A 1 mol / L sodium hydroxide solution (5 times the resin volume) was passed through the resin layer from top to bottom at a flow rate of 2 times the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of 4 times the resin volume per hour until the conductivity of the leaching water was less than 2 μS / cm. The solution was then filtered dry to obtain the hydroxide-form anion exchange resin.

[0092] Industrial styrene-based strong base anion exchange resin was packed into a resin column. Five times the resin volume of 1 mol / L potassium iodide solution was passed through the resin layer from top to bottom at a flow rate of twice the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of four times the resin volume per hour until the conductivity of the rinsing water was less than 5 μs / cm. The solution was then filtered dry to obtain iodine-loaded bactericidal resin.

[0093] Industrial styrene-based strong base anion exchange resin was packed into a resin column. Five times the resin volume of 1 mol / L sodium sulfite solution was passed through the resin layer from top to bottom at a flow rate of twice the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of four times the resin volume per hour until the conductivity of the rinsing water was less than 5 μs / cm. The solution was then filtered dry to obtain the deoxygenating resin.

[0094] 500 ml of sodium-form resin was laid flat at the bottom of a 400 mm diameter resin column. Then, 79 L of a 1:1 mixture of hydrogen-form cation and hydroxide-form anion resins was added to the column. 500 ml of iodine-loaded bactericidal resin was then spread on top of the mixture. Finally, 20 L of deoxygenating resin was added. Coolant was passed through the resin column from top to bottom at a controlled flow rate. Dissolved oxygen, coliform count, conductivity, and pH of the influent and effluent were measured. The operational data are shown in Table 3.

[0095] Table 2. Results of dissolved oxygen, coliform bacteria, conductivity, and pH in influent and effluent.

[0096] Indicator Name Water ingress Out of water Out of water Operating flow rate, resin volume per hour 2.5 10 Dissolved oxygen, mg / L 8120 0.037 0.068 Escherichia coli, CFU / L 619 7 10 Electrical conductivity, μs / cm 19 1.1 1.2 pH 6.80 8.47 8.36

[0097] Dissolved oxygen was measured using a HACH POLYMETRON 9825 instrument. Coliform bacteria concentration was determined according to GB / T5750-2006 Standard Test Methods for Drinking Water. Conductivity was measured according to GB / T6908-2018 Analysis Methods for Boiler Water and Cooling Water. pH was measured according to GB / T6904-2018 Analysis Methods for Boiler Water and Cooling Water. The coolant circulation data through the resin was reduced. After passing through a combination of purification resins, dissolved oxygen, coliform bacteria, and conductivity in the water were lowered and controlled to extremely low levels. The pH was stabilized in a slightly alkaline environment, which passively neutralized the metal parts of equipment and pipes, minimizing corrosion. The improved coolant quality after resin purification significantly enhanced the safety of equipment and pipelines, reducing the risk of damage to electronic components in the data center.

[0098] Example 4

[0099] Industrial styrene-based weak acid cation exchange resin was packed into a resin column. Five times the resin volume of 1 mol / L sodium hydroxide solution was passed through the resin layer from top to bottom at a flow rate of twice the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of four times the resin volume per hour until the pH of the rinsing water was ≤12. The solution was then filtered dry to obtain sodium-type cation exchange resin.

[0100] Industrial styrene-based strong acid cation exchange resin was packed into a resin column. A 1 mol / L hydrochloric acid solution (5 times the resin volume) was passed through the resin layer from top to bottom at a flow rate of 2 times the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of 4 times the resin volume per hour until the conductivity of the leaching water was less than 2 μS / cm. The solution was then filtered dry to obtain the hydrogen-form cation exchange resin. Similarly, industrial styrene-based strong base anion exchange resin was packed into a resin column. A 1 mol / L sodium hydroxide solution (5 times the resin volume) was passed through the resin layer from top to bottom at a flow rate of 2 times the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of 4 times the resin volume per hour until the conductivity of the leaching water was less than 2 μS / cm. The solution was then filtered dry to obtain the hydroxide-form anion exchange resin.

[0101] Industrial styrene-based strong base anion exchange resin was packed into a resin column. Five times the resin volume of 1 mol / L potassium iodide solution was passed through the resin layer from top to bottom at a flow rate of twice the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of four times the resin volume per hour until the conductivity of the rinsing water was less than 5 μs / cm. The solution was then filtered dry to obtain iodine-loaded bactericidal resin.

[0102] Industrial styrene-based strong base anion exchange resin was packed into a resin column. Five times the resin volume of 1 mol / L sodium sulfite solution was passed through the resin layer from top to bottom at a flow rate of twice the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of four times the resin volume per hour until the conductivity of the rinsing water was less than 5 μs / cm. The solution was then filtered dry to obtain the deoxygenating resin.

[0103] 500 ml of sodium-form resin was laid flat at the bottom of a 400 mm diameter resin column. Then, 79 L of a mixture of hydrogen-form cation and hydroxide-form anion resins in different volume ratios was added to the column. 500 ml of iodine-loaded bactericidal resin was spread evenly on top of the mixed resin, followed by 20 L of deoxygenating resin. Coolant was then passed through the resin column from top to bottom at a flow rate of 500 L / h. Dissolved oxygen, coliform bacteria count, conductivity, and pH of the influent and effluent were measured. The operational data are shown in Table 4.

[0104] Table 4. Dissolved oxygen, coliform bacteria, conductivity, and pH of influent and effluent

[0105] Indicator Name Water ingress Out of water Out of water Volume ratio of cation and anion resins 1:1.5 1:2 Dissolved oxygen, mg / L 8089 0.069 0.078 Escherichia coli, CFU / L 549 12 13 Electrical conductivity, μs / cm 21 1.5 1.4 pH 6.86 8.24 8.31

[0106] Dissolved oxygen was measured using a HACH POLYMETRON 9825 instrument. E. coli concentration was determined according to GB / T5750-2006 Standard Test Methods for Drinking Water. Conductivity was measured according to GB / T6908-2018 Analysis Methods for Boiler Water and Cooling Water. pH was measured according to GB / T6904-2018 Analysis Methods for Boiler Water and Cooling Water. By changing the volume ratio of cation and anion resins in the desalination process, the coolant, after passing through the combined purification resin, showed a significant decrease in dissolved oxygen, E. coli, and conductivity, maintaining them at low levels. The pH was stabilized in a slightly alkaline environment, which passively degraded the metal components of equipment and pipelines, minimizing corrosion. The purified coolant, with its superior water quality, significantly improved the safety of equipment and pipelines, reducing the risk of damage to electronic components in the data center.

[0107] Example 5

[0108] Industrial styrene-based weak acid cation exchange resin was packed into a resin column. Five times the resin volume of 1 mol / L sodium hydroxide solution was passed through the resin layer from top to bottom at a flow rate of twice the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of four times the resin volume per hour until the pH of the rinsing water was ≤12. The solution was then filtered dry to obtain sodium-type cation exchange resin.

[0109] Industrial styrene-based strong acid cation exchange resin was packed into a resin column. A 1 mol / L hydrochloric acid solution (5 times the resin volume) was passed through the resin layer from top to bottom at a flow rate of 2 times the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of 4 times the resin volume per hour until the conductivity of the leaching water was less than 2 μS / cm. The solution was then filtered dry to obtain the hydrogen-form cation exchange resin. Similarly, industrial styrene-based strong base anion exchange resin was packed into a resin column. A 1 mol / L sodium hydroxide solution (5 times the resin volume) was passed through the resin layer from top to bottom at a flow rate of 2 times the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of 4 times the resin volume per hour until the conductivity of the leaching water was less than 2 μS / cm. The solution was then filtered dry to obtain the hydroxide-form anion exchange resin.

[0110] Industrial styrene-based strong acid cation exchange resin was packed into a resin column. Five times the resin volume of 1 mol / L silver nitrate solution was passed through the resin layer from top to bottom at a flow rate of twice the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of four times the resin volume per hour until the conductivity of the rinsing water was less than 5 μs / cm. The solution was then filtered dry to obtain silver-loaded bactericidal resin.

[0111] Industrial styrene-based strong base anion exchange resin was packed into a resin column. Five times the resin volume of 1 mol / L sodium sulfite solution was passed through the resin layer from top to bottom at a flow rate of twice the resin volume per hour. Then, pure water was passed through the resin layer from top to bottom at a flow rate of four times the resin volume per hour until the conductivity of the rinsing water was less than 5 μs / cm. The solution was then filtered dry to obtain the deoxygenating resin.

[0112] 500 ml of sodium-form resin was evenly packed at the bottom of a 400 mm diameter resin column. Then, 79 L of a 1:1 mixture of hydrogen-form cation and hydroxide-form anion resins was added to the column. 500 ml of silver-loaded bactericidal resin was then evenly spread on top of the mixture. Finally, 20 L of deoxygenating resin was added. Coolant was passed through the resin column from top to bottom at a flow rate of 500 L / h. Dissolved oxygen, coliform count, conductivity, and pH of the influent and effluent were measured. The operational data are shown in Table 5.

[0113] Table 5. Dissolved oxygen, coliform bacteria, conductivity, and pH of influent and effluent.

[0114] Indicator Name Water ingress Out of water Dissolved oxygen, mg / L 8017 0.069 Escherichia coli, CFU / L 821 11 Electrical conductivity, μs / cm 18 1.3 pH 6.78 8.39

[0115] Dissolved oxygen was measured using a HACH POLYMETRON 9825 instrument. E. coli concentration was determined according to GB / T5750-2006 Standard Test Methods for Drinking Water. Conductivity was measured according to GB / T6908-2018 Analysis Methods for Boiler Water and Cooling Water. pH was measured according to GB / T6904-2018 Analysis Methods for Boiler Water and Cooling Water. The bactericidal resin was replaced with a silver-impregnated bactericidal resin. After the coolant underwent purification with this combined resin, dissolved oxygen, E. coli, and conductivity in the water were reduced to even lower levels. The pH was stabilized in a slightly alkaline environment, which passively degraded the metal components of equipment and pipes, minimizing corrosion. The purified coolant resulted in better water quality, significantly improving the safety of equipment and pipes and reducing the risk of damage to electronic components in the data center.

[0116] Although the above embodiments have provided a detailed description of the present invention, they are only some embodiments of the present invention, and not all embodiments. People can obtain other embodiments based on these embodiments without creative effort, and these embodiments all fall within the protection scope of the present invention.

Claims

1. A coolant purifying resin column, characterized by comprising: The purification resin column is sequentially laid from bottom to top with pH adjusting resin, desalination resin, sterilization resin and oxygen removal resin; The volume ratio of the pH adjusting resin to the desalination resin, the sterilization resin and the oxygen removal resin is 0.5:79:0.5:20; The desalination resin comprises hydrogen type cation resin and hydroxyl type anion resin, and the volume ratio of the hydrogen type cation resin to the hydroxyl type anion resin is 1:1; The oxygen removal resin carries sulfite radical; The sterilization resin carries silver element and / or iodine element; The pH adjusting resin comprises sodium type cation resin.

2. The purification resin column according to claim 1, characterized by The preparation method of the oxygen removal resin comprises the following steps: The styrene type strong base anion resin is loaded in a resin column, a sodium sulfite solution is passed through the resin layer from top to bottom at a flow rate of 2 times the volume of the styrene type strong base anion resin per hour, and then water is passed through the resin layer from top to bottom at a flow rate of 4 times the volume of the styrene type strong base anion resin per hour until the conductivity of the eluted water is less than 5 µs / cm, and the obtained product is filtered and dried to obtain the oxygen removal resin; The concentration of the sodium sulfite solution is 1 mol / L; The volume ratio of the styrene type strong base anion resin to sodium sulfite is 1:

5.

3. The purification resin column of claim 1, wherein, The preparation method of the sterilization resin comprises the following steps: The resin is loaded in a resin column, a sterilization solution is passed through the resin layer from top to bottom at a flow rate of 2 times the volume of the resin per hour, and then water is passed through the resin layer from top to bottom at a flow rate of 4 times the volume of the resin per hour until the conductivity of the eluted water is less than 5 µs / cm, and the obtained product is filtered and dried to obtain the sterilization resin; The resin comprises styrene type strong base anion resin or styrene type strong acid cation resin; The sterilization solution comprises potassium iodide solution or silver nitrate solution, the concentration of the potassium iodide is 1 mol / L, and the concentration of the silver nitrate is 1 mol / L; The volume ratio of the resin to the iodine sterilization solution is 1:

5.

4. The purification resin column of claim 1, wherein The preparation method of the desalination resin comprises the following steps: 1) The styrene type strong acid cation resin is loaded in a resin column, a hydrochloric acid solution is passed through the resin layer from top to bottom at a flow rate of 2 times the volume of the resin per hour, and then water is passed through the resin layer from top to bottom at a flow rate of 4 times the volume of the resin per hour until the conductivity of the eluted water is less than 2 µs / cm, and the obtained product is filtered and dried to obtain hydrogen type cation resin; The volume ratio of the styrene type strong acid cation resin to the hydrochloric acid solution is 1:5; The concentration of the hydrochloric acid solution is 1 mol / L; 2) The styrene type strong base anion resin is loaded in a resin column, a sodium hydroxide solution is passed through the resin layer from top to bottom at a flow rate of 2 times the volume of the resin per hour, and then water is passed through the resin layer from top to bottom at a flow rate of 4 times the volume of the resin per hour until the conductivity of the eluted water is less than 2 µs / cm, and the obtained product is filtered and dried to obtain hydroxyl type anion resin; The volume ratio of the styrene type strong base anion resin to the sodium hydroxide solution is 1:5; The concentration of the sodium hydroxide solution is 1 mol / L; 3) The hydrogen type cation resin obtained in step 1) and the hydroxyl type anion resin obtained in step 2) are mixed to obtain desalination resin.

5. The purification resin column of claim 1, wherein The preparation method of the pH adjusting resin comprises the following steps: The weak acid cation resin is loaded in a resin column, sodium hydroxide solution is passed through the resin layer from top to bottom at a flow rate of 2 times the volume of the weak acid cation resin per hour, then water is passed through the resin layer from top to bottom at a flow rate of 4 times the volume of the weak acid cation resin per hour until the pH of the eluted water is ≤12, and the resin is dried to obtain the pH-adjusted resin; The weak acid cation resin comprises an acrylic weak acid cation resin or a styrene weak acid cation resin; The volume ratio of the weak acid cation resin to the sodium hydroxide solution is 1:5; The concentration of the sodium hydroxide solution is 1 mol / L.

6. Use of the purification resin column according to any one of claims 1-5 in the purification of a coolant.

7. Use according to claim 6, characterized in that, The use comprises the following step: passing the coolant through the purification resin column from bottom to top at a flow rate of 500 L / h.

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