CN116294763A

CN116294763A - Heat exchanger scaling prevention and control method and device and heat exchanger scaling prevention and control system

Info

Publication number: CN116294763A
Application number: CN202310293112.XA
Authority: CN
Inventors: 苏志斌; 贺文晓; 闫凯玲; 刘爱明; 何瑞敏
Original assignee: Shendong Coal Branch of China Shenhua Energy Co Ltd; Guoneng Shendong Coal Group Co Ltd
Current assignee: Shendong Coal Branch of China Shenhua Energy Co Ltd; Guoneng Shendong Coal Group Co Ltd
Priority date: 2023-03-23
Filing date: 2023-03-23
Publication date: 2023-06-23

Abstract

The application provides a heat exchanger scaling prevention and treatment method and device and a heat exchanger scaling prevention and treatment system. The method comprises the following steps: acquiring first data, wherein the first data is obtained by analyzing the water quality of raw water by adopting a first preset method; and analyzing the first data by adopting a saturation index method and a stability index method, determining whether the raw water enters the heat exchanger to form scale, and softening the raw water under the condition that the raw water enters the heat exchanger to form scale. The method can analyze the water quality of raw water, so that first data of the raw water can be obtained, and then the first data is analyzed by adopting a saturation index method and a stability index method, and as the saturation index method and the stability index method can determine the scaling trend, whether the raw water enters the heat exchanger or not can be accurately determined, and further, the raw water is softened, so that most of substances which cause the scaling of the heat exchanger in the raw water can be filtered, and the scaling of the heat exchanger can be prevented in advance.

Description

Heat exchanger scaling prevention and control method and device and heat exchanger scaling prevention and control system

Technical Field

The application relates to the technical field of scale inhibition treatment, in particular to a heat exchanger scale prevention method, a heat exchanger scale prevention device, a computer readable storage medium and a heat exchanger scale inhibition prevention system.

Background

Along with the development of society, living conditions are improved, treatment of workers in factories is improved, after workers get off duty, bath is needed, bath water (water used when a user takes a bath) directly contacts with a human body, so that the bath water cannot be softened like heating water, otherwise, bath cream smeared on the surface of the body cannot be washed out by water, skin discomfort is caused for a long time, and the phenomenon of scaling on the surface of a heat exchanger tube bundle is commonly caused in each bath water heat exchange station.

Disclosure of Invention

The main object of the present application is to provide a method and an apparatus for preventing and controlling scale formation of a heat exchanger, a computer readable storage medium and a system for preventing and controlling scale formation of a heat exchanger, so as to at least solve the problem of scale formation on the surface of a tube bundle of the heat exchanger in the prior art.

In order to achieve the above object, according to one aspect of the present application, there is provided a method for controlling fouling of a heat exchanger, comprising: acquiring first data, wherein the first data is obtained by analyzing the water quality of raw water by a first preset method, the raw water is water which is not subjected to softened water treatment, and the first preset method comprises at least one of the following steps: ion chromatography, atomic absorption, and electrode methods, wherein the first data is a concentration parameter of a substance in the raw water, and the substance comprises at least one of the following: calcium ion, magnesium ion, barium ion, copper ion, iron ion, phenolphthalein alkalinity, and hydrogen ion; and analyzing the first data by adopting a saturation index method and a stability index method, determining whether the raw water enters the heat exchanger to form scale, and performing softened water treatment on the raw water under the condition that the raw water enters the heat exchanger to form scale.

Optionally, analyzing the first data by using a saturation index method and a stability index method to determine whether the raw water enters the heat exchanger and is scaled, including: using the first formula lsi=ph+t _F +C _F +A _F -TDS _F Calculating a first saturation index, wherein LSI represents a saturation index obtained by the saturation index method, pH represents a hydrogen ion concentration index, T _F Represents a temperature factor, C _F Expressed as calcium hardness factor, A _F Indicating total alkalinity factor, TDS _F Representing the total dissolved solids factor; determining that a first preliminary result is that the raw water enters the heat exchanger without scaling when the first saturation index is smaller than a saturation threshold value, and determining that the raw water enters the heat exchanger without scaling when the first saturation index is larger than or equal to the saturation threshold value; calculating a second saturation index by using a second formula PSI=2 pHs-pH, wherein PSI represents the saturation index obtained by using the stable index method, and pHs represents the saturated pH value; determining a second preliminary result that the raw water enters the heat exchanger without scaling when the second saturation index is within a preset range, and determining a second preliminary result that the raw water enters the heat exchanger without scaling when the second saturation index is not within the preset range; and determining that the raw water enters the heat exchanger and is not scaled under the condition that the first preliminary result and/or the second preliminary result represent that the raw water enters the heat exchanger and is scaled.

Optionally, after determining that the raw water enters the heat exchanger to scale, the method further comprises: obtaining a first relation, wherein the first relation is a mapping relation between the obtained filtering parameter and the turbidity of the filtered raw water by adopting a plurality of filtering parameters for filtering test, and the filtering parameter comprises at least one of the following components: flow rate, filter layer thickness, filter media and particle size of the filter media, the filter media comprising one or more of quartz sand, filter cotton, activated carbon; obtaining a second relation, wherein the second relation is a mapping relation between the filtering parameters and the turbidity of the filtered raw water, and the filtering parameters are adopted to carry out a back flushing test, the back flushing test is a test of the reverse flow of the raw water along a filtering direction, and the filtering direction is a direction from an inlet to an outlet of a filter; and determining a target parameter for the softened water treatment of the raw water according to the first relation and the second relation, wherein the target parameter is an optimal solution of the filtering parameter.

Optionally, after the raw water is treated with softened water, the method further includes: obtaining second data, wherein the second data is obtained by analyzing the composition of scale in a plurality of heat exchanger samples using a second predetermined method, the second data being used to characterize the composition of scale in the heat exchanger samples, the second predetermined method comprising at least one of: titration, gravimetric analysis, instrumental analysis, chromatographic analysis, the heat exchanger samples being heat exchangers in which scale is present, the thickness and volume of the scale being different in different heat exchanger samples.

Optionally, after the second data is acquired, the method further comprises: in the case where the second data includes calcium carbonate, removing the scale by a calcium carbonate deposition method, and using a third formula

Determination ofScale inhibition of removal of the scale using calcium ions, wherein η represents the scale inhibition, C ₁ Represents the concentration of the calcium ions after the water body test of the adding agent, C ₀ Representing the concentration of the calcium ions after the water body test without adding the medicament, C ₂ And the concentration of the calcium ions before the water body test is represented, wherein the water body test is carried out on water bodies corresponding to the calcium ions with different concentrations, different temperatures, different heating times and different concentrations by adopting the calcium carbonate deposition method.

Optionally, after the raw water is treated with softened water, the method further includes: acquiring third data, wherein the third data is whether corrosion phenomenon exists in a metal part of the heat exchanger; in the event that the third data characterizes the corrosion phenomenon in the metal component of the heat exchanger, it is determined that the metal component in the heat exchanger needs to be replaced.

Optionally, after determining that the metal component in the heat exchanger needs to be replaced, the method further comprises: the corrosion rate of a plurality of hanging pieces is obtained by adopting a rotary hanging piece method to carry out corrosion rate test calculation on the hanging pieces, wherein each hanging piece is a hanging piece of the metal part, and the metal type and the quality of each hanging piece are different; determining the hanger plate greater than a predetermined corrosion rate as an initial hanger plate; and determining the initial hanging piece with the minimum corrosion rate as a target hanging piece, wherein the metal type and the metal quality corresponding to the target hanging piece are used for providing a reference for replacing the metal part.

According to another aspect of the present application, there is provided a heat exchanger fouling prevention and control device comprising: a first obtaining unit configured to obtain first data, where the first data is obtained by analyzing water quality of raw water by a first predetermined method, where the raw water is water that has not undergone softening water treatment, and the first predetermined method includes at least one of: ion chromatography, atomic absorption, and electrode methods, wherein the first data is a concentration parameter of a substance in the raw water, and the substance comprises at least one of the following: calcium ion, magnesium ion, barium ion, copper ion, iron ion, phenolphthalein alkalinity, and hydrogen ion; the first treatment unit is used for analyzing the first data by adopting a saturation index method and a stability index method, determining whether the raw water enters the heat exchanger to be scaled or not, and carrying out softened water treatment on the raw water under the condition that the raw water enters the heat exchanger to be scaled.

According to still another aspect of the present application, there is provided a computer readable storage medium, where the computer readable storage medium includes a stored program, and when the program runs, the apparatus in which the computer readable storage medium is located is controlled to execute any one of the methods for preventing and controlling fouling of a heat exchanger.

According to yet another aspect of the present application, there is provided a heat exchanger scale control system comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including a control method for performing any one of the heat exchanger fouling.

By the technical scheme, the quality of raw water can be analyzed, so that first data of the raw water can be obtained, and then the first data are analyzed by adopting a saturation index method and a stability index method.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

FIG. 1 shows a block diagram of a hardware architecture of a mobile terminal performing a method of controlling heat exchanger fouling provided in accordance with an embodiment of the present application;

FIG. 2 illustrates a flow diagram of a method for controlling fouling of a heat exchanger provided in accordance with an embodiment of the present application;

fig. 3 shows a block diagram of a heat exchanger fouling prevention device provided according to an embodiment of the present application.

Wherein the above figures include the following reference numerals:

102. a processor; 104. a memory; 106. a transmission device; 108. and an input/output device.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Because of the general scaling phenomenon of the tube bundle surface of the heat exchanger in the bath water heat exchange station, the existence of scale can cause the following effects:

(1) The heat transfer efficiency of the heat exchange equipment (which can be a heat exchanger) is reduced, the heat conductivity coefficient of the scale is between one fiftieth and one thirty fiftieth of that of steel, the thermal resistance is very large, and according to the research, the heat exchange efficiency of the heat exchanger can be reduced by 10-30% when the scale is 0.5-1.0 mm each time, and the consumption of heat energy can be increased while the supply of bath water temperature is influenced;

(2) The scale can be deposited on the inner wall of the pipeline, so that the inner diameter and flow of the pipeline are reduced, the heat transfer effect of the heat exchanger is greatly reduced, meanwhile, the deposition of the scale can cause local electrochemical corrosion of equipment and the pipeline, the sectional area of water flow can be reduced, and the water flow resistance and the energy transmission are increased;

(3) The operation cost can be increased when the scale is cleaned, the heat transfer tube bundles can be inevitably corroded by the cleaning liquid, the service lives of equipment and pipelines are shortened, and the waste liquid generated after cleaning belongs to dangerous waste and has high treatment cost.

The raw water pipeline of the heat exchange station is DN150, two tubular heat exchangers are arranged in the station, the heat exchange area of a single heat exchanger is 35 square meters, and the heat exchanger adopts a steam-water heat exchange mode to heat raw water for bathing of workers. Because no perfect water treatment equipment is arranged on site, the hardness of raw water is high, tap water directly enters the heat exchanger for heat exchange without treatment, and the heat exchanger is seriously scaled and blocked. According to the investigation, the heat exchanger is basically cleaned and descaled once a month, so that not only is energy wasted, but also the bath time can be influenced. Clogging of the pipes can further reduce water delivery. Meanwhile, the heat exchanger is cleaned, so that the cost of water production is increased, and the cleaning solution can inevitably corrode equipment pipelines, so that the service lives of the equipment and the pipelines are shortened.

As described in the background art, in order to solve the above problems, embodiments of the present application provide a method, an apparatus, a computer readable storage medium, and a system for preventing and controlling fouling of a heat exchanger.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The method embodiments provided in the embodiments of the present application may be performed in a mobile terminal, a computer terminal or similar computing device. Taking the mobile terminal as an example, fig. 1 is a block diagram of a hardware structure of the mobile terminal of a method for preventing and controlling heat exchanger fouling according to an embodiment of the present invention. As shown in fig. 1, a mobile terminal may include one or more (only one is shown in fig. 1) processors 102 (the processor 102 may include, but is not limited to, a microprocessor MCU or a processing device such as a programmable logic device FPGA) and a memory 104 for storing data, wherein the mobile terminal may also include a transmission device 106 for communication functions and an input-output device 108. It will be appreciated by those skilled in the art that the structure shown in fig. 1 is merely illustrative and not limiting of the structure of the mobile terminal described above. For example, the mobile terminal may also include more or fewer components than shown in fig. 1, or have a different configuration than shown in fig. 1.

The memory 104 may be used to store a computer program, for example, a software program of application software and a module, such as a computer program corresponding to a display method of device information in an embodiment of the present invention, and the processor 102 executes the computer program stored in the memory 104 to perform various functional applications and data processing, that is, to implement the above-described method. Memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory remotely located relative to the processor 102, which may be connected to the mobile terminal via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or transmit data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, simply referred to as NIC) that can connect to other network devices through a base station to communicate with the internet. In one example, the transmission device 106 may be a Radio Frequency (RF) module, which is configured to communicate with the internet wirelessly.

In this embodiment, a method for controlling fouling of a heat exchanger operating on a mobile terminal, a computer terminal, or a similar computing device is provided, and it should be noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and that although a logical sequence is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in a different order than that illustrated herein.

Fig. 2 is a schematic flow diagram of a method for controlling fouling of a heat exchanger according to an embodiment of the present application. As shown in fig. 2, the method comprises the steps of:

step S201, acquiring first data, wherein the first data is obtained by analyzing the water quality of raw water by a first predetermined method, the raw water is water not treated by softened water, and the first predetermined method includes at least one of the following steps: ion chromatography, atomic absorption, and electrode methods, wherein the first data is a concentration parameter of a substance in the raw water, the substance including at least one of: calcium ion, magnesium ion, barium ion, copper ion, iron ion, phenolphthalein alkalinity, and hydrogen ion;

Specifically, the quality of raw water to be fed into the heat exchanger can be analyzed, and some substances in the raw water can cause the heat exchanger to generate scale, so that the quality of the raw water can be analyzed first to determine specific components in the raw water, and then the softened water can be treated (filtered) according to the components in the raw water.

And S202, analyzing the first data by adopting a saturation index method and a stability index method, determining whether the raw water enters the heat exchanger to form scale, and performing softened water treatment on the raw water under the condition that the raw water enters the heat exchanger to form scale.

Specifically, as the determination of the scaling tendency of water, the Langelier saturation index method (LSI) and the litz sodium Ryznar stability index method (PSI) are generally used, and both methods can be mutually related. Thus, whether the raw water enters the heat exchanger or not can be scaled can be accurately determined through the two index methods.

In addition, if it is determined whether the raw water enters the heat exchanger to be fouled or not according to the quality of the raw water, the raw water can be subjected to softening water treatment, namely, the raw water is subjected to filtering treatment, and the components which can cause the fouled in the raw water are filtered out, so that the raw water subjected to the softening water treatment enters the heat exchanger to be not fouled basically for a long time.

According to the embodiment, the water quality of raw water can be analyzed, so that first data of the raw water can be obtained, and then the first data are analyzed by adopting a saturation index method and a stability index method, and as the trend of scaling can be determined by the saturation index method and the stability index method, whether the raw water enters the heat exchanger or not can be accurately determined, and then the raw water is subjected to softened water treatment, so that most of substances which cause the scaling of the heat exchanger in the raw water can be filtered, and the scaling of the heat exchanger can be prevented in advance.

Specifically, the inventors of the present application measured the water quality of raw water in two regions (region A and region B), and obtained first data, and described the water quality of raw water in two regions in the form of a table, wherein the water quality table 1 for the region A at the first time, the water quality table 2 for the region B at the first time, the water quality table 3 for the region A at the second time, the water quality table 4 for the region B at the second time,

TABLE 1

TABLE 2

TABLE 3 Table 3

TABLE 4 Table 4

Langelier (Langelier) proposes an expression describing the equilibrium relationship between calcium carbonate solids and carbon dioxide-containing solutions according to the in-water carbonic acid dissolution equilibrium theory, and Langelier saturation index (rfld) is a method for determining whether water is corrosive or fouled, and the litz nano Ryznar stability index (PSI) is another common water quality discrimination method, and in a specific implementation process, the first data is analyzed by using a saturation index method and a stability index method, so as to determine whether the raw water enters the heat exchanger to be fouled, which can be achieved by the following steps: using the first formula lsi=ph+t _F +C _F +A _F -TDS _F Calculating a first saturation index, wherein LSI represents a saturation index obtained by the saturation index method, pH represents a hydrogen ion concentration index, and T _F Represents a temperature factor, C _F Expressed as calcium hardness factor, A _F Indicating total alkalinity factor, TDS _F Representing the total dissolved solids factor; determining that the first preliminary result is that the raw water enters the heat exchanger without scaling when the first saturation index is smaller than a saturation threshold value, and determining that the first preliminary result is that the raw water enters the heat exchanger without scaling when the first saturation index is greater than or equal to the saturation threshold value; calculating a second saturation index by adopting a second formula PSI=2 pHs-pH, wherein PSI represents the saturation index obtained by adopting the stable index method, and pHs represents the saturated pH value; in the case that the second saturation index is within a predetermined range, determining that the raw water enters the upper part as a second preliminary resultThe heat exchanger is not scaled, and the second preliminary result is determined to be that the raw water enters the heat exchanger to be scaled under the condition that the second saturation index is not in a preset range; and determining that the raw water enters the heat exchanger and is not scaled under the condition that the first preliminary result and/or the second preliminary result indicate that the raw water does not enter the heat exchanger.

In this case, the langerhans saturation index method may account for the first data change of the substances in the raw water, and it is determined that in addition to the temperature (heating) and hardness (softening) adjustment, other methods are used to prevent scaling, such as pH adjustment, total alkalinity adjustment or TDS control of the water _F The pH, T, is collected first according to the first formula of Langerhaner Saturation Index (LSI) and the second formula of Litznar Ryznar stability index (PSI) _F 、C _F 、A _F 、TDS _F And values such as pHs are substituted into a formula, so that the scaling trend of a subsequent heat exchanger caused by water quality is analyzed, and technical reference is provided for the research and development of subsequent medicaments and the preparation of a dosing system.

In order to further filter the raw water to ensure that the possibility of scaling after the filtered raw water enters the heat exchanger is small, the method further comprises the following steps after determining that the raw water enters the heat exchanger to scale: obtaining a first relation, wherein the first relation is a mapping relation between the obtained filtering parameter and the turbidity of the filtered raw water by adopting a plurality of filtering parameters for filtering test, and the filtering parameter comprises at least one of the following components: the flow rate, the thickness of the filter layer, the particle size of the filter medium and the particle size of the filter medium, wherein the filter medium comprises one or more of quartz sand, filter cotton and active carbon; obtaining a second relation, wherein the second relation is a mapping relation between the filtering parameters and the turbidity of the filtered raw water, and the filtering parameters are adopted to carry out a back flushing test, the back flushing test is a test of the reverse flow of the raw water along a filtering direction, and the filtering direction is a direction from an inlet to an outlet of the filter; and determining a target parameter for the softened water treatment of the raw water according to the first relation and the second relation, wherein the target parameter is an optimal solution of the filtering parameter.

In the scheme, a filtration test and a back flush test are carried out under different flow rates, filter layer thicknesses, particle sizes and raw water concentrations to obtain a first relationship and a second relationship. And comparing the water washing effect and the air-water back washing effect under different conditions through the influence of repeated back washing on the sewage interception capacity of the filter layer and the water quality of the effluent, and finding out a back washing filtering mode with high efficiency and water saving, namely obtaining an optimal solution of a filtering test and an optimal solution of the back washing test according to the first relation and the second relation.

The factors influencing the filtering effect of the filter comprise the particle size of the filter material, the thickness of the filter layer, the flow rate of filtered water, the water temperature and the like, and researches show that the smaller the particle size of the filter material is, the better the filtering effect is, the more stable the water quality of the discharged water is, but the filter layer is more likely to be blocked, and the frequency of back flushing can be increased, so that the water consumption is increased. The thickness of the filter layer is positively correlated with the quality of the effluent, but too thick filter layer increases the difficulty of back flushing, which increases the cost of the filter product, and therefore it is important to select appropriate design parameters.

In addition to analyzing the quality of raw water, the scale of the heat exchanger may be analyzed, and if the scale exists in the heat exchanger, the composition of the scale may be analyzed to obtain second data, and in a specific implementation manner, after the raw water is treated to soften water, the method further includes the following steps: obtaining second data, wherein the second data is obtained by analyzing the composition of scale in a plurality of heat exchanger samples using a second predetermined method, the second data being used to characterize the composition of the scale in the heat exchanger samples, the second predetermined method comprising at least one of: titration, gravimetric analysis, instrumental analysis, chromatographic analysis, wherein the heat exchanger sample is a heat exchanger in which scale is present, and wherein the thickness and volume of the scale in the different heat exchanger samples are different.

In the scheme, the components of the scale in the heat exchanger can be determined by acquiring the second data, and then the second data can be used for preparing and adding medicines to remove the scale in the heat exchanger, so that the problem of scale formation on the surface of the heat exchanger tube bundle is further solved.

In particular, the inventors of the present application have found through experiments that the main component of scale is calcium carbonate, a crystalline salt,

calcium carbonate belongs to slightly-soluble salts, the temperature of tap water is increased along with heat exchange of a heat exchanger medium, calcium bicarbonate in water is heated and decomposed into calcium carbonate, and the solubility of the calcium carbonate is reduced along with the temperature increase, so that the calcium carbonate is easy to crystallize and separate out in the heat exchange process. When the crystallization amount is gradually increased, calcium carbonate is deposited in the heat exchanger and gradually grows into calcium carbonate scale, thereby forming scale inside the heat exchanger.

In order to obtain an optimal configuration of the removal agent, in one embodiment of the present application, after the second data is acquired, the method further comprises the steps of: in the case where the second data includes calcium carbonate, removing the scale by a calcium carbonate deposition method, and using a third formula

Determining the scale inhibition rate of removing the scale by adopting calcium ions, wherein eta represents the scale inhibition rate and C ₁ Represents the concentration of the calcium ions after the water body test of the medicament ₀ Representing the concentration of the calcium ions after the water test without the agent, C ₂ The concentration of the calcium ions before the water body test is represented, and the water body test is a test performed on water bodies corresponding to the calcium ions with different concentrations, different temperatures, different heating times and different concentrations of hydrogen ions by adopting the calcium carbonate deposition method.

In the scheme, a calcium carbonate deposition method can be used for testing, so that the concentration of calcium ions in the medicament to be prepared is obtained, and the medicament can be prepared according to the determined concentration of the calcium ions, so that scale with different volumes and different thicknesses is removed.

Specifically, experimental operation and result evaluation refer to GB/T16632-2008 "determination of scale inhibition Property of Water treatment agent-calcium carbonate deposition method", and the inhibition of calcium carbonate and calcium sulfate crystallization process by copolymer LX-1000 (copolymer may include phosphorus oxide, calcium oxide and sodium oxide) prepared by the present study is examined. The national standard is referred to for the preparation and calibration of standard solutions used in the experimental process, and the analysis of steps and results.

The principle of the experimental method is as follows: the water body with certain hardness and alkalinity generates scale under the condition of heating. By measuring Ca in water without adding copolymer ²⁺ The scale inhibition performance of the functional polymer can be intuitively represented by the scale inhibition rate. Ca in water ²⁺ The higher the concentration of (2) is, the higher the scale inhibition rate is, and the better the scale inhibition effect of the medicament is.

(1) The experimental conditions of calcium carbonate scale inhibition are as follows: ca (Ca) ²⁺ 250mg/L，HCO ₃ ^- 732mg/L, temperature 80.+ -. 1 ℃ for 10 hours, pH 7.0.

(2) The experimental conditions for inhibiting calcium sulfate scale are as follows: ca (Ca) ²⁺ 6000mg/L，SO ₄ ^2- 7000mg/L, temperature 80.+ -. 1 ℃ for 10 hours, pH 7.0.

And further calculating the scale inhibition rate by a third formula.

Many factors influence the scale and corrosion inhibition performance of the copolymer (LX-1000), such as different proportions of monomer configuration can cause different proportions of molecular structures and characteristic functional groups in a macromolecular chain, and can also have great influence on the scale and corrosion inhibition performance of the copolymer.

Three main components in LX-1000 are selected as monomers for experiment, five factors four-level L16 (4 ⁵ ) Orthogonal experiments were performed and the experimental results are shown in table 5:

table 5: scale inhibition rate data table

Variable number

Component 1: component 2

Component 1: component 3

Time h

Molecular modulators

Initiator(s)

Scale inhibition rate

1

3:1

1:0.8

4

8％

88.20

2

3:1

1:1

5

10％

84.72

3

4:1

1:0.8

3.5

10％

9％

74.77

4

4:1

1:1

4.5

8％

7％

24.80

5

5:1

1:0.8

5

9％

7％

10.52

6

5:1

1:1

4

7％

9％

65.74

7

6:1

1:0.8

3.5

7％

10％

89.51

8

6:1

1:1

4.5

9％

8％

69.80

From the orthogonal experimental results, the optimal monomer ratio for LX-1000 synthesis is 6:1:0.8, the titration time is 2h, the heat preservation time is 2h, and the initiator and the molecular regulator respectively account for 10% of the total mass of the monomers.

As the initiator increases, the molecular weight decreases and the morphology of the copolymer changes from longer chain to shorter particulate. It is inferred that the copolymer can be more effectively adsorbed on the active growth points of the calcium scale embryo along with the reduction of the molecular weight, so that the growth speeds of crystal faces of the scale are different, and the effect of inhibiting scale is achieved.

Through scaling experiments of different components, the inventor of the application has researched a method for preparing Ca ²⁺ 、Mg ²⁺ The chelate ions with stable and high solubility are formed, the growth of calcium carbonate crystals can be deformed, and the firm structure of the calcium carbonate crystals is changed, so that the calcium ions in the bath water are dispersed, the purpose of preventing the scaling of heat exchange equipment is achieved, the scaling tendency of the bath water is slowed down, the scale layer strength is reduced, and the scaling period of the bath water system is prolonged. The agent ensures that the water quality of the treated bath water meets the requirements of the water quality standard of domestic drinking water (GB 5749-2006) and the water quality standard of public baths (CJ/T325-2010), and the pH value of the scale inhibitor meets the requirements of 6.5-7.5.

According to the scale removal scheme, the scale formed by the calcium carbonate crystals can be changed into soft scale which is easy to remove through the scale inhibitor, and finally the purpose of preventing the heat exchange equipment from scaling is achieved, so that the scaling tendency of bath water is slowed down, the crystal lattice of the formed carbonate precipitate is distorted, and the scale layer strength is reduced, so that the scaling period is prolonged.

In addition to analyzing the quality of raw water and proportioning agents, corrosion in heat exchangers can be prevented by other means, and in some embodiments, after softening the raw water, the method further comprises the steps of: acquiring third data, wherein the third data is whether corrosion phenomenon exists in the metal part of the heat exchanger; in the case where the third data characterizes the corrosion phenomenon in the metal component of the heat exchanger, it is determined that the metal component of the heat exchanger needs to be replaced.

In the scheme, the corrosion phenomenon of the metal part of the heat exchanger can be analyzed, and corresponding third data are obtained, so that whether the scale formation in the heat exchanger is caused by improper metal part or not can be determined, and then the heat exchanger can be replaced through the determined result.

Specifically, the inventors of the present application have studied and found that from the corrosion of a bath water heat exchange apparatus (heat exchanger), the heat exchanger corrosion is mainly under-scale corrosion and bacterial corrosion.

In the process of forming the scale, the scale becomes discontinuous and uneven due to the unbalanced action of water flow, so that gaps are formed at certain positions, and part of dissolved oxygen enters under the scale; in contrast, the dissolved oxygen content is relatively high in the area without the sediment, and the passivation oxide film is formed by reaction with the metal surface, compared with the situation that the scale metal without the passivation film is more active and acts as an anode, the area without the scale acts as a cathode, and the circulating water acts as an electrolyte, so that the corrosion primary cell is formed.

In order to select the most suitable metal component for the heat exchanger, and further ensure that the corrosion protection effect of the metal component in the heat exchanger is better, in some embodiments, after determining that the metal component in the heat exchanger needs to be replaced, the method further includes the following steps: the corrosion rate of a plurality of hanging pieces is obtained by adopting a rotary hanging piece method to carry out corrosion rate test calculation on the plurality of hanging pieces, wherein each hanging piece is a hanging piece of the metal part, and the metal types and the quality of each hanging piece are different; determining the hanger above greater than a predetermined corrosion rate as an initial hanger; and determining the initial hanging piece with the minimum corrosion rate as a target hanging piece, wherein the metal type and the metal quality corresponding to the target hanging piece are used for providing a reference for replacing the metal part.

In the scheme, the corrosion rates of the hanging pieces can be calculated through a rotary hanging piece method, and then the corrosion rates corresponding to different hanging pieces are obtained, so that the initial hanging piece with the minimum corrosion rate is determined to be the target hanging piece, and when the metal part of the heat exchanger is replaced subsequently, the determined corresponding information of the target hanging piece can be used for replacing the metal part of the heat exchanger, and therefore the corrosion prevention effect of the heat exchanger after the metal part is replaced is guaranteed to be good.

Specifically, the rotary hanging piece method uses a standard carbon steel hanging piece which is hung on a rotary hanging piece device, a motor is used for driving the device to rotate in water so as to simulate the flow rate, a corrosion inhibitor is added, after a period of time, the weight change is taken out and measured, the corrosion speed is calculated, the solution concentration of the scale inhibitor adopted in the corrosion speed test can be different, the weight of the hanging piece can be regarded as the weight of the hanging piece after the hanging piece is corroded in a narrow sense, and the quality can not only comprise the weight, but also comprise the manufacturing process and other elements (such as stainless steel).

Specifically, describing the rotary hanging piece method, the inventors of the present application have concluded through corrosion rate tests that:

firstly, measuring corrosion inhibition performance of a water treatment agent by using a rotary hanging piece method according to national standard (GB/T18175-2014), adding a proper amount of bath water into a reaction vessel, proportioning water treatment agents with different concentrations, and adding the water treatment agents into the reaction vessel; then placing the reaction vessel into a water bath tank of a rotary hanging piece experiment instrument, adjusting the water bath temperature, hanging the pretreated hanging piece into the experiment instrument after the water bath temperature and the experiment solution temperature reach 50 ℃, controlling the rotating speed at 75r/min, taking out the hanging piece after the experiment is finished for 72 hours, and processing the hanging piece according to the standard requirement;

A total of 6 hanger plates were tested, and the resulting corrosion rates are shown in Table 6,

table 6: corrosion rate meter

The quality of the No. 2 hanging piece after the experiment is not reduced, but is slightly increased, so that the average corrosion rate of the No. 2 hanging piece is negative. The reason is that the corrosion product on the surface of the No. 2 hanging piece is not wiped according to the specification after the test operation, so that the hanging piece quality is slightly increased, and errors are caused, so the data are discarded. The value of the sixth group in the remaining five groups of data is the smallest so that the corrosion inhibition preventing effect of the sixth group is the best. The data in the data processing in Table 2 are directly compared to obtain that the standard hanging piece in the No. 6 beaker has the minimum corrosion rate, the corrosion rate is only 0.002149mm/a, and the weight loss is 0.0004g, so that the standard hanging piece can be used for providing reference for replacing metal parts.

Through the research of the corrosion prevention technology, reasonable components (metal components corresponding to the hanging pieces for preventing corrosion, which are obtained according to experiments) can be added into the scale inhibitor, so that chemical reaction of dissolved oxygen in water and a metal example is isolated, ferrous hydroxide is prevented from continuously reacting to generate ferric hydroxide, and an amorphous protective film capable of automatically repairing is generated on the inner wall of a water pipe, thereby inhibiting the whole corrosion process.

It will be appreciated from the foregoing description of the present application that the scale treatment system may be designed in accordance with a variety of established parameters, with appropriate selection of materials of construction thereof, taking into consideration a combination of operating pressures and temperatures of the apparatus, corrosiveness of the media, processing properties of the materials, etc.

For example, in addition to original equipment such as a heat exchanger and a circulating pump, a filtering subsystem and a scale inhibition dosing subsystem can be designed in the scale treatment system, wherein the filtering subsystem is respectively communicated with the circulating pump and the water inlet pipe, the filtering subsystem is used for filtering water flowing from the water inlet pipe, the scale inhibition dosing subsystem is respectively communicated with the filtering subsystem and the circulating pump, the scale inhibition dosing subsystem is used for adding a medicament into water which is conveyed to the circulating pump by the filtering subsystem, and the medicament is used for removing scale in the heat exchanger.

The embodiment of the application also provides a device for preventing and controlling the heat exchanger from scaling, and it is noted that the device for preventing and controlling the heat exchanger from scaling in the embodiment of the application can be used for executing the method for preventing and controlling the heat exchanger from scaling provided in the embodiment of the application. The device is used for realizing the above embodiments and preferred embodiments, and is not described in detail. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.

The device for preventing and controlling the scaling of the heat exchanger provided by the embodiment of the application is described below.

Fig. 3 is a block diagram of a heat exchanger fouling prevention and control device according to an embodiment of the present application. As shown in fig. 3, the apparatus includes:

a first obtaining unit 10 for obtaining first data, wherein the first data is obtained by analyzing water quality of raw water by a first predetermined method, the raw water is water not treated by softened water, and the first predetermined method includes at least one of the following: ion chromatography, atomic absorption, and electrode methods, wherein the first data is a concentration parameter of a substance in the raw water, the substance including at least one of: calcium ion, magnesium ion, barium ion, copper ion, iron ion, phenolphthalein alkalinity, and hydrogen ion;

and a first treatment unit 20 for analyzing the first data by using a saturation index method and a stability index method, determining whether the raw water enters the heat exchanger to be scaled, and performing a softened water treatment on the raw water if it is determined that the raw water enters the heat exchanger to be scaled.

Langelier (Langelier) proposes an expression describing the equilibrium relationship between calcium carbonate solids and carbon dioxide-containing solutions according to the in-water carbonic acid dissolution equilibrium theory, langelier saturation index (lri) is a method for determining whether water is corrosive or fouled, and litz nano Ryznar stability index (PSI) is another common water quality discrimination method, and in particular implementation, the first processing unit includes a first calculation module for using a first formula lsi=ph+t _F +C _F +A _F -TDS _F Calculating a first saturation index, wherein LSI represents a saturation index obtained by the saturation index method, pH represents a hydrogen ion concentration index, and T _F Represents a temperature factor, C _F Expressed as calcium hardness factor, A _F Indicating total alkalinity factor, TDS _F Representing the total dissolved solids factor; the first determining module is used for determining that the first preliminary result is that the raw water enters the heat exchanger and cannot be scaled when the first saturation index is smaller than a saturation threshold value, and determining that the first preliminary result is that the raw water enters the heat exchanger and cannot be scaled when the first saturation index is larger than or equal to the saturation threshold value; the second calculation module is configured to calculate a second saturation index by using a second formula psi=2phs—ph, where PSI represents a saturation index obtained by using the above-mentioned stable index method, and pHs represents a saturated pH value; a second determining module for determining that the raw water enters the heat exchanger without scaling if the second saturation index is within a predetermined range, and determining that the second preliminary result is that the raw water does not scale if the second saturation index is not within the predetermined range Under the condition of the inside of the enclosure, determining the second preliminary result as that the raw water enters the heat exchanger to cause scaling; the third determining module is configured to determine that the raw water enters the heat exchanger to be scaled when the first preliminary result and/or the second preliminary result indicates that the raw water enters the heat exchanger to be scaled, and determine that the raw water enters the heat exchanger to be scaled when the first preliminary result and the second preliminary result indicate that the raw water does not enter the heat exchanger to be scaled.

In order to further filter raw water so as to ensure that the possibility of scaling after the filtered raw water enters the heat exchanger is small, the device further comprises a second acquisition unit, a third acquisition unit and a first determination unit, wherein the second acquisition unit is used for acquiring a first relationship after determining that the raw water enters the heat exchanger and scaling is caused, the first relationship is a mapping relationship between the obtained filtering parameters and the turbidity of the filtered raw water by adopting a plurality of filtering parameters for filtering experiments, and the filtering parameters comprise at least one of the following: the flow rate, the thickness of the filter layer, the particle size of the filter medium and the particle size of the filter medium, wherein the filter medium comprises one or more of quartz sand, filter cotton and active carbon; the third obtaining unit is used for obtaining a second relation, wherein the second relation is a mapping relation between the filtering parameters and the turbidity of the filtered raw water, and the filtering parameters are adopted to carry out a back flushing test, the back flushing test is a test of the reverse flow of the raw water along a filtering direction, and the filtering direction is a direction from an inlet to an outlet of the filter; the first determining unit is configured to determine a target parameter for performing the softened water treatment on the raw water according to the first relationship and the second relationship, where the target parameter is an optimal solution of the filtering parameter.

In addition to analyzing the quality of raw water, the scale of the heat exchanger may be analyzed, and if scale is present in the heat exchanger, the composition of the scale may be analyzed to obtain second data, and in a specific implementation, the apparatus further includes a fourth obtaining unit for obtaining second data after softening the raw water, wherein the second data is obtained by analyzing the composition of the scale in a plurality of heat exchanger samples using a second predetermined method, the second data is used to characterize the composition of the scale in the heat exchanger samples, and the second predetermined method includes at least one of: titration, gravimetric analysis, instrumental analysis, chromatographic analysis, wherein the heat exchanger sample is a heat exchanger in which scale is present, and wherein the thickness and volume of the scale in the different heat exchanger samples are different.

In order to obtain the optimal configuration of the removing agent, in one embodiment of the present application, the apparatus further includes a second processing unit for removing the scale by a calcium carbonate deposition method and using a third formula when the second data includes calcium carbonate after obtaining the second data

In addition to analyzing the quality of raw water and proportioning the chemicals, corrosion in the heat exchanger can be prevented by other means, and in some embodiments, the apparatus further includes a fifth obtaining unit and a second determining unit, wherein the fifth obtaining unit is configured to obtain third data after the raw water is softened, and the third data is whether a corrosion phenomenon exists in a metal component of the heat exchanger; the second determining unit is configured to determine that the metal part in the heat exchanger needs to be replaced in a case where the third data characterizes the corrosion phenomenon in the metal part of the heat exchanger.

In order to select a metal part most suitable for the heat exchanger and further ensure that the corrosion prevention effect of the metal part in the heat exchanger is better, in some embodiments, the device further comprises a sixth acquisition unit, a third determination unit and a fourth determination unit, wherein the sixth acquisition unit is used for acquiring the corrosion rates of a plurality of hanging pieces after determining that the metal part in the heat exchanger needs to be replaced, the corrosion rates are obtained by carrying out corrosion rate test calculation on the plurality of hanging pieces by adopting a rotary hanging piece method, each hanging piece is a hanging piece of the metal part, and the metal types and the quality of each hanging piece are different; the third determining unit is used for determining the hanging piece larger than the preset corrosion rate as an initial hanging piece; and a fourth determining unit for determining the initial hanging piece with the minimum corrosion rate as a target hanging piece, wherein the metal type and the quality corresponding to the target hanging piece are used for providing a reference for replacing the metal part.

The heat exchanger scaling prevention device comprises a processor and a memory, wherein the first acquisition unit, the first processing unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions. The modules are all located in the same processor; alternatively, the above modules may be located in different processors in any combination.

The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The inner core can be provided with one or more than one, and the problem of scaling phenomenon on the surface of the heat exchanger tube bundle in the prior art is solved by adjusting the parameters of the inner core.

The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.

The embodiment of the invention provides a computer readable storage medium, which comprises a stored program, wherein the program is used for controlling equipment where the computer readable storage medium is positioned to execute the method for preventing and controlling the heat exchanger from scaling.

Specifically, the method for preventing and controlling the scaling of the heat exchanger comprises the following steps:

The embodiment of the invention provides a processor, which is used for running a program, wherein the method for preventing and controlling the scaling of the heat exchanger is executed when the program runs.

The embodiment of the invention provides equipment, which comprises a processor, a memory and a program stored in the memory and capable of running on the processor, wherein the processor realizes at least the following steps when executing the program:

The device herein may be a server, PC, PAD, cell phone, etc.

The application also provides a heat exchanger scale inhibition control system comprising one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs comprise a control method for executing any of the heat exchanger scale inhibition control methods.

The present application also provides a computer program product adapted to perform a program initialized with at least the following method steps when executed on a data processing device:

It will be appreciated by those skilled in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may be implemented in program code executable by computing devices, so that they may be stored in a storage device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.

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 one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.

From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

1) According to the method for preventing and treating the scaling of the heat exchanger, the water quality of raw water can be analyzed, so that first data of the raw water can be obtained, and then the first data are analyzed by adopting the saturation index method and the stability index method.

2) According to the device for preventing and treating the scaling of the heat exchanger, the water quality of raw water can be analyzed, so that first data of the raw water can be obtained, and then the first data are analyzed by adopting the saturation index method and the stability index method.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for controlling fouling of a heat exchanger, comprising:

acquiring first data, wherein the first data is obtained by analyzing the water quality of raw water by a first preset method, the raw water is water which is not subjected to softened water treatment, and the first preset method comprises at least one of the following steps: ion chromatography, atomic absorption, and electrode methods, wherein the first data is a concentration parameter of a substance in the raw water, and the substance comprises at least one of the following: calcium ion, magnesium ion, barium ion, copper ion, iron ion, phenolphthalein alkalinity, and hydrogen ion;

and analyzing the first data by adopting a saturation index method and a stability index method, determining whether the raw water enters the heat exchanger to form scale, and performing softened water treatment on the raw water under the condition that the raw water enters the heat exchanger to form scale.

2. The method of claim 1, wherein analyzing the first data using a saturation index method and a stability index method to determine whether the raw water enters the heat exchanger to foul comprises:

using the first formula lsi=ph+t _F +C _F +A _F -TDS _F Calculating a first saturation index, wherein LSI represents a saturation index obtained by the saturation index method, pH represents a hydrogen ion concentration index, T _F Represents a temperature factor, C _F Expressed as calcium hardness factor, A _F Indicating total alkalinity factor, TDS _F Representing the total dissolved solids factor;

determining that a first preliminary result is that the raw water enters the heat exchanger without scaling when the first saturation index is smaller than a saturation threshold value, and determining that the raw water enters the heat exchanger without scaling when the first saturation index is larger than or equal to the saturation threshold value;

calculating a second saturation index by using a second formula PSI=2 pHs-pH, wherein PSI represents the saturation index obtained by using the stable index method, and pHs represents the saturated pH value;

determining a second preliminary result that the raw water enters the heat exchanger without scaling when the second saturation index is within a preset range, and determining a second preliminary result that the raw water enters the heat exchanger without scaling when the second saturation index is not within the preset range;

And determining that the raw water enters the heat exchanger and is not scaled under the condition that the first preliminary result and/or the second preliminary result represent that the raw water enters the heat exchanger and is scaled.

3. The method of claim 1, wherein after determining that the raw water entering the heat exchanger will scale, the method further comprises:

obtaining a first relation, wherein the first relation is a mapping relation between the obtained filtering parameter and the turbidity of the filtered raw water by adopting a plurality of filtering parameters for filtering test, and the filtering parameter comprises at least one of the following components: flow rate, filter layer thickness, filter media and particle size of the filter media, the filter media comprising one or more of quartz sand, filter cotton, activated carbon;

obtaining a second relation, wherein the second relation is a mapping relation between the filtering parameters and the turbidity of the filtered raw water, and the filtering parameters are adopted to carry out a back flushing test, the back flushing test is a test of the reverse flow of the raw water along a filtering direction, and the filtering direction is a direction from an inlet to an outlet of a filter;

And determining a target parameter for the softened water treatment of the raw water according to the first relation and the second relation, wherein the target parameter is an optimal solution of the filtering parameter.

4. The method according to claim 1, wherein after the raw water is subjected to the softened water treatment, the method further comprises:

obtaining second data, wherein the second data is obtained by analyzing the composition of scale in a plurality of heat exchanger samples using a second predetermined method, the second data being used to characterize the composition of scale in the heat exchanger samples, the second predetermined method comprising at least one of: titration, gravimetric analysis, instrumental analysis, chromatographic analysis, the heat exchanger samples being heat exchangers in which scale is present, the thickness and volume of the scale being different in different heat exchanger samples.

5. The method of claim 4, wherein after the second data is acquired, the method further comprises:

in the case where the second data includes calcium carbonate, removing the scale by a calcium carbonate deposition method, and using a third formula

Determining the scale inhibition rate of removing the scale by using calcium ions, wherein eta represents the scale inhibition rate and C ₁ Represents the concentration of the calcium ions after the water body test of the adding agent, C ₀ Representing the concentration of the calcium ions after the water body test without adding the medicament, C ₂ And the concentration of the calcium ions before the water body test is represented, wherein the water body test is carried out on water bodies corresponding to the calcium ions with different concentrations, different temperatures, different heating times and different concentrations by adopting the calcium carbonate deposition method.

6. The method according to claim 1, wherein after the raw water is subjected to the softened water treatment, the method further comprises:

acquiring third data, wherein the third data is whether corrosion phenomenon exists in a metal part of the heat exchanger;

in the event that the third data characterizes the corrosion phenomenon in the metal component of the heat exchanger, it is determined that the metal component in the heat exchanger needs to be replaced.

7. The method of claim 6, wherein after determining that the metal component in the heat exchanger needs to be replaced, the method further comprises:

the corrosion rate of a plurality of hanging pieces is obtained by adopting a rotary hanging piece method to carry out corrosion rate test calculation on the hanging pieces, wherein each hanging piece is a hanging piece of the metal part, and the metal type and the quality of each hanging piece are different;

Determining the hanger plate greater than a predetermined corrosion rate as an initial hanger plate;

and determining the initial hanging piece with the minimum corrosion rate as a target hanging piece, wherein the metal type and the metal quality corresponding to the target hanging piece are used for providing a reference for replacing the metal part.

8. A heat exchanger fouling control device, comprising:

a first obtaining unit configured to obtain first data, where the first data is obtained by analyzing water quality of raw water by a first predetermined method, where the raw water is water that has not undergone softening water treatment, and the first predetermined method includes at least one of: ion chromatography, atomic absorption, and electrode methods, wherein the first data is a concentration parameter of a substance in the raw water, and the substance comprises at least one of the following: calcium ion, magnesium ion, barium ion, copper ion, iron ion, phenolphthalein alkalinity, and hydrogen ion;

the first treatment unit is used for analyzing the first data by adopting a saturation index method and a stability index method, determining whether the raw water enters the heat exchanger to be scaled or not, and carrying out softened water treatment on the raw water under the condition that the raw water enters the heat exchanger to be scaled.

9. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a stored program, wherein the program, when run, controls a device in which the computer-readable storage medium is located to perform the method for controlling fouling of a heat exchanger according to any one of claims 1 to 7.

10. A heat exchanger scale control system comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing the method of controlling heat exchanger fouling of any of claims 1-7.