A method for online monitoring and processing of phosphate fire-resistant oil

Abstract

The present invention relates to the technical field of phosphate ester fire-resistant oil production, and specifically to an online monitoring and processing method for phosphate ester fire-resistant oil. The online monitoring and processing method for phosphate ester fire-resistant oil includes selecting raw oil that does not meet the standard threshold, analyzing the performance index parameters of the phosphate ester fire-resistant oil in each treatment process through online monitoring, and dynamically adjusting the control parameters of each treatment process, and performing micro-oxidation treatment, deep purification treatment and blending treatment on the raw oil to obtain high-quality finished oil. The present invention combines online monitoring with a variety of treatment processes for phosphate ester fire-resistant oil, and can dynamically adjust control parameters and treatment process routes to adapt to the treatment requirements of phosphate ester fire-resistant oil of different oil quality, significantly improve the service life and performance stability of fire-resistant oil, achieve the best treatment effect while improving production efficiency, reducing production costs, and ensuring the optimization of treatment effect.

Description

Technical Field

[0001] The invention relates to the technical field of phosphate fire-resistant oil production, in particular to an online monitoring and processing method for phosphate fire-resistant oil. Background Art

[0002] Phosphate ester fire-resistant oil is a fire-resistant hydraulic oil. With the rapid development of electric power, some large-scale thermal power plants, nuclear power plants, and large-capacity high-parameter steam turbine generator sets are also increasing. In order to meet the high-parameter requirements of the speed control systems of these units and avoid fire accidents caused by high-pressure oil leakage in the system, their speed control systems have generally adopted phosphate ester fire-resistant oil as hydraulic medium.

[0003] The main component of phosphate fire-resistant oil is triaryl phosphate. As the working medium of the hydraulic speed control system, the stability and reliability of the performance of phosphate fire-resistant oil is directly related to the operating efficiency and life of the speed control system. With the growing demand for fire-resistant oil in industries such as electricity and aviation, how to ensure that the quality of phosphate fire-resistant oil reaches the best state has become an urgent problem to be solved in the industry. Therefore, after the preparation of phosphate fire-resistant oil, it is often necessary to improve the quality of phosphate fire-resistant oil to improve the performance indicators of phosphate fire-resistant oil. However, the existing oil treatment methods are relatively simple, mostly the blending of oil and additives, and it is impossible to perform more functional deep treatments, so it is not suitable for the quality improvement of phosphate fire-resistant oil. At the same time, due to the lack of real-time monitoring function, the staff cannot timely understand the quality status of phosphate fire-resistant oil during the treatment process, and can only rely on regular test reports, so the treatment effect is unstable, and sometimes even causes over-treatment or under-treatment, increasing operating costs and potential risks. Summary of the invention

[0004] The object of the present invention is to provide an online monitoring and processing method for phosphate fire-resistant oil, so as to solve the problem in the prior art that the treatment effect of phosphate fire-resistant oil is limited and the treatment process is unstable due to the single oil treatment method.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] The present invention discloses an online monitoring and processing method for phosphate fire-resistant oil, comprising:

[0007] S1. According to the standard threshold of the performance index of the phosphate ester fire-resistant oil, select the feedstock oil that does not meet the standard threshold;

[0008] S2, analyzing the content of easily degradable substances in the crude oil through online monitoring, selecting a micro-oxidation process according to the analysis result and dynamically adjusting the control parameters of the micro-oxidation process, and processing the crude oil to obtain an intermediate oil;

[0009] S3, obtaining basic index parameters of the raw oil or the intermediate oil through online monitoring, selecting a deep purification process and dynamically adjusting control parameters of the deep purification process according to a comparison analysis between the basic index parameters and the standard threshold, and processing the raw oil or the intermediate oil to obtain a base oil;

[0010] S4. Obtain key indicator parameters of the base oil through online monitoring, select a blending process and dynamically adjust control parameters of the blending process based on a comparison analysis of the key indicator parameters and the standard threshold, and process the base oil to obtain finished oil.

[0011] Optionally, the method of selecting a micro-oxidation process to process the crude oil to obtain an intermediate oil according to the analysis result, and dynamically adjusting the control parameters of the micro-oxidation process includes:

[0012] Matching a catalyst according to the components of the easily degradable substances in the crude oil, and presetting an oxidation kettle containing the catalyst;

[0013] Injecting oxygen into the oxidation kettle until the preset oxygen concentration in the oxidation kettle is reached, and introducing the feedstock oil into the oxidation kettle;

[0014] The raw oil is heated, and after the raw oil is heated to a preset temperature, it is atomized and sprayed on the catalyst for micro-oxidation treatment to obtain the intermediate oil;

[0015] By online monitoring the change of the easily degradable substance content in the intermediate oil, the heating temperature, as well as the injection dosage and pressure of oxygen are dynamically adjusted until the online monitoring and analysis shows that the easily degradable substance content in the intermediate oil reaches a preset content.

[0016] Optionally, it also includes a method for determining the next level of processing technology of the crude oil:

[0017] The content of easily degradable substances in the crude oil is obtained through online monitoring, and when the content of easily degradable substances does not reach the preset standard content, the crude oil is introduced into step S2 for treatment;

[0018] The content of easily degradable substances in the crude oil is obtained through online monitoring, and when the content of easily degradable substances reaches the preset standard content through analysis, but the basic index parameter does not meet the standard threshold, the crude oil is introduced into step S3 for processing.

[0019] Optionally, when the analyzed content of the easily degradable substances does not reach the preset standard content, the method of introducing the raw oil into step S2 for treatment includes:

[0020] Presetting the processing time of the micro-oxidation process, and processing the crude oil whose content of easily degradable substances does not reach the preset standard content through step S2;

[0021] Obtaining the change of the easily degradable substance content of the crude oil through online monitoring, and if the easily degradable substance content of the crude oil still does not reach the preset standard content after the preset processing time, dynamically extending the processing time;

[0022] The changes in the content of easily degradable substances in the crude oil are continuously obtained through online monitoring. If the content of easily degradable substances in the crude oil still does not reach the preset standard content after the extended processing time, the processing time will continue to be dynamically extended until the content of easily degradable substances in the crude oil reaches the preset standard content.

[0023] Optionally, the method of selecting a deep purification process to process the feedstock oil or the intermediate oil to obtain the base oil, and dynamically adjusting the control parameters of the deep purification process includes:

[0024] Regenerating the raw oil or the intermediate oil for a preset time to obtain primary purified oil;

[0025] The raw oil, the intermediate oil or the primary purified oil is heated to a preset temperature and then dehydrated to obtain secondary purified oil;

[0026] The raw oil, the intermediate oil, the primary purified oil or the secondary purified oil is filtered for a preset time to obtain the base oil;

[0027] The basic index parameters of the base oil are obtained through online monitoring. According to the comparison and analysis between the basic index parameters of the base oil and the standard threshold, if the basic index parameters of the base oil do not meet the standard threshold, the base oil is returned to step S3 for further processing until the basic index parameters of the base oil meet the standard threshold.

[0028] Optionally, the method of heating the raw oil, the intermediate oil or the primary purified oil to a preset temperature and then performing a dehydration treatment to obtain the secondary purified oil comprises:

[0029] Obtaining the temperature parameters of the raw oil, the intermediate oil or the primary purified oil through online monitoring, and dynamically raising the temperature so that the oil reaches a preset temperature required for flash vaporization;

[0030] The raw oil, the intermediate oil or the primary purified oil heated to a preset temperature is atomized, and the water vaporized and separated during the atomization process is removed by condensation to obtain the secondary purified oil.

[0031] Optionally, it also includes a method for recovering and reusing oil during the online monitoring process of the phosphate fire-resistant oil:

[0032] Determine the oil circuit of the consumable device to be replaced, and introduce the phosphate fire-resistant oil in the oil circuit into a vacuum environment under negative pressure for recovery and filtration;

[0033] After the consumables are replaced, the recovered filtered phosphate fire-resistant oil is injected into the oil circuit before recovery at a preset pressure.

[0034] Optionally, the method of selecting a blending process to process the base oil to obtain a finished oil and dynamically adjusting the control parameters of the blending process includes:

[0035] Comparing and analyzing the key index parameters of the base oil with the standard threshold, and preparing an additive mother solution according to the key index parameters that do not meet the standard threshold;

[0036] Stirring and mixing the base oil and the additive mother solution at a preset temperature, and obtaining the finished oil after a preset time;

[0037] By online monitoring the changes in the key indicator parameters of the finished oil, the heating temperature and the injection dosage of the additive mother solution are dynamically adjusted until the key indicator parameters of the finished oil monitored online and analyzed meet the standard thresholds.

[0038] Optionally, a method for preparing an additive mother solution is also included:

[0039] Matching a number of corresponding types of additives according to the key indicator parameters that do not meet the standard threshold, and determining a ratio of dosage of the number of the additives;

[0040] A mother liquid base liquid is obtained by sampling the base oil, and the mother liquid base liquid and a plurality of the additives are stirred, mixed and heated according to the proportion of dosage until the mother liquid base liquid and the plurality of the additives are fully mixed to obtain the additive mother liquid.

[0041] Optionally, the method of matching a plurality of corresponding types of additives according to the key indicator parameters that do not meet the standard threshold and determining the proportion of the dosage of the plurality of additives includes:

[0042] Obtaining key index parameters of the base oil including foam characteristic parameters, oxidation stability parameters and hydrolysis stability parameters through online monitoring, and presetting the capacity of the mother liquid base liquid;

[0043] When it is analyzed that the foam characteristic parameter does not meet the standard threshold, the additive is matched as a defoaming agent, and the proportion dosage of the additive is calculated according to the preset capacity of the mother liquid base liquid;

[0044] When it is analyzed that the oxidation stability parameter does not meet the standard threshold, the additive is matched with an antioxidant, and the proportion dosage of the additive is calculated according to the preset capacity of the mother liquid base liquid;

[0045] When it is analyzed that the hydrolysis stability parameter does not meet the standard threshold, the additive is matched as an anti-hydrolysis agent, and the proportion dosage of the additive is calculated according to the preset capacity of the mother liquid base liquid.

[0046] Compared with the prior art, the online monitoring and processing method for phosphate fire-resistant oil provided by the embodiment of the present invention has the following beneficial effects:

[0047] By combining online monitoring and multiple treatment processes of phosphate fire-resistant oil, it is possible to monitor in real time the control parameters such as temperature and pressure of each treatment process, the basic index parameters such as particle contamination, resistivity, acid value, moisture of phosphate fire-resistant oil, and key index parameters such as foam characteristic parameters, oxidation stability parameters and hydrolysis stability parameters of each treatment process when phosphate fire-resistant oil is subjected to multiple treatment processes. By comparing and analyzing the various index parameters obtained by monitoring with the standard thresholds, the control parameters and treatment process routes of each treatment process are dynamically adjusted to meet the treatment requirements of phosphate fire-resistant oil of different oil quality, thereby significantly improving the service life and performance stability of phosphate fire-resistant oil, reducing process redundancy, and achieving the best treatment effect while improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0049] Figure 1 A schematic block diagram of the process flow of an online monitoring and processing method for phosphate fire-resistant oil provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0050] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, the preferred embodiments of the present invention are described in detail.

[0051] The present invention discloses an online monitoring and processing method for phosphate fire-resistant oil, comprising:

[0052] S1. According to the standard threshold of the performance index of phosphate ester fire-resistant oil, select the raw material oil that does not meet the standard threshold;

[0053] S2. Analyze the content of easily degradable substances in the crude oil through online monitoring, select a micro-oxidation process according to the analysis results, and dynamically adjust the control parameters of the micro-oxidation process to process the crude oil to obtain intermediate oil;

[0054] S3. Obtain basic index parameters of the raw oil or intermediate oil through online monitoring, select a deep purification process and dynamically adjust the control parameters of the deep purification process based on the comparison and analysis of the basic index parameters and the standard threshold value, and process the raw oil or intermediate oil to obtain the base oil;

[0055] S4. Obtain key indicator parameters of base oil through online monitoring, select blending process and dynamically adjust control parameters of blending process according to comparative analysis of key indicator parameters and standard thresholds, and process base oil to obtain finished oil.

[0056] Through the implementation of the above-mentioned online monitoring and treatment method for phosphate fire-resistant oil, combined with online monitoring and multiple treatment processes of phosphate fire-resistant oil, it is possible to monitor in real time the control parameters such as temperature and pressure of each treatment process when the phosphate fire-resistant oil undergoes multiple treatment processes, the basic index parameters such as particle contamination, resistivity, acid value, moisture of the phosphate fire-resistant oil, and key index parameters such as foam characteristic parameters, oxidation stability parameters and hydrolysis stability parameters. By comparing and analyzing the various index parameters obtained by monitoring with the standard thresholds, the control parameters and treatment process routes of each treatment process are dynamically adjusted to meet the treatment requirements of phosphate fire-resistant oil of different oil quality, thereby significantly improving the service life and performance stability of phosphate fire-resistant oil, reducing process redundancy, and achieving the best treatment effect while improving production efficiency.

[0057] As mentioned above, the standard thresholds of the performance indicators of phosphate ester fire-resistant oil are selected based on the new oil quality standards listed in DL / T 571 "Guidelines for Operation and Maintenance of Phosphate Ester Fire-Resistant Oil for Power Plants", as shown in Table 1, the standard thresholds of performance indicators:

[0058] Table 1 Standard threshold table

[0059]

[0060] As described in the standard threshold table, ISO VG32 is the internationally accepted way of expressing the viscosity of lubricating oils, which means that the kinematic viscosity at 40 degrees Celsius is approximately 32 mm² / s; ISO VG46 means that the kinematic viscosity at 40 degrees Celsius is approximately 46 mm² / s; SAE AS4059F grade is the particle contamination classification standard.

[0061] Further, the method of selecting a micro-oxidation process to process the crude oil to obtain an intermediate oil according to the analysis result and dynamically adjusting the control parameters of the micro-oxidation process includes:

[0062] The catalyst is matched according to the components of the easily degradable substances in the crude oil, and an oxidation kettle containing the catalyst is preset;

[0063] Injecting oxygen into the oxidation kettle until the preset oxygen concentration in the oxidation kettle is reached, and introducing the crude oil into the oxidation kettle;

[0064] The crude oil is heated, and after the crude oil is heated to a preset temperature, it is atomized and sprayed on a catalyst for micro-oxidation treatment to obtain an intermediate oil;

[0065] By online monitoring the changes in the content of easily degradable substances in the intermediate oil, the heating temperature, as well as the injection dosage and pressure of oxygen are dynamically adjusted until the content of easily degradable substances in the intermediate oil analyzed by online monitoring reaches the preset content.

[0066] Through the implementation of the above-mentioned phosphate fire-resistant oil online monitoring and treatment method, the raw oil is heated to a preset temperature, the oil temperature is controlled to be always kept below 60°C, and the heated raw oil is atomized and evenly sprayed on the catalyst. The catalyst is preferably a copper wire with a purity of 99.99% and a diameter of 1.26mm, so that the raw oil is fully in contact with oxygen under the action of the catalyst for micro-oxidation reaction, accelerating the oxidation rate of easily degradable substances in the raw oil and continuously reducing its content. By repeating the above steps, according to the change in the content of easily degradable substances in the online raw oil, the heating temperature, as well as the injection dose and pressure of oxygen are dynamically adjusted, so as to avoid excessive oxidation of the raw oil by precise control, until the content of easily degradable substances in the raw oil meets the standard, so as to efficiently reduce the content of easily degradable substances such as phenols in the raw oil, and improve the micro-oxidation treatment efficiency of the raw oil. Among them, the content of easily degradable substances in phosphate fire-resistant oil ≤ 0.1wt% is the preset standard content. The copper wire used in the catalyst has a purity of 99.99%, with an alternative range of 99.9%-99.999%. The diameter is 1.26mm, with an alternative range of 0.5-3mm. The material is copper, and the alternative material is nickel. The form is wire, and the alternative forms are powder, tube, rod, foil, plate, strip, belt, ball ring, etc.

[0067] Furthermore, it also includes a method for determining the next level of processing technology of the crude oil:

[0068] The content of easily degradable substances in the crude oil is obtained through online monitoring, and when the content of easily degradable substances does not reach the preset standard content, the crude oil is introduced into step S2 for treatment;

[0069] The content of easily degradable substances in the crude oil is obtained through online monitoring, and when the content of easily degradable substances reaches the preset standard content through analysis, but the basic index parameters do not meet the standard threshold, the crude oil is introduced into step S3 for processing.

[0070] Through the implementation of the above-mentioned online monitoring and processing method for phosphate fire-resistant oil, the next-level processing route of the crude oil can be dynamically adjusted according to the content of easily degradable substances in the crude oil to meet the processing needs of phosphate fire-resistant oil of different oil quality, thereby reducing process redundancy and significantly improving the processing efficiency of phosphate fire-resistant oil.

[0071] Furthermore, when the content of the easily degradable substances does not reach the preset standard content, the method of introducing the crude oil into step S2 for treatment includes:

[0072] The processing time of the micro-oxidation process is preset, and the crude oil whose content of easily degradable substances does not reach the preset standard content is processed through step S2;

[0073] Obtain the change of the content of easily degradable substances in the crude oil through online monitoring. If the content of easily degradable substances in the crude oil still does not reach the preset standard content after the preset processing time, dynamically extend the processing time;

[0074] The changes in the content of easily degradable substances in the crude oil are continuously obtained through online monitoring. If the content of easily degradable substances in the crude oil still does not reach the preset standard content after the extended processing time, the processing time will continue to be dynamically extended until the content of easily degradable substances in the crude oil reaches the preset standard content.

[0075] Through the implementation of the above-mentioned online monitoring and treatment method for phosphate fire-resistant oil, when the content of easily degradable substances in the crude oil has not yet reached the preset standard content, the processing time of the micro-oxidation process is dynamically adjusted by online monitoring of the change in the content of easily degradable substances in the crude oil to achieve precise control, reduce processing time and cost, and further improve the processing efficiency and stability of product quality. Among them, as shown in the comparison table of oxidation time and content of easily degradable substances before and after oxidation in Table 2:

[0076] Table 2 Comparison of oxidation time and content of easily degradable substances before and after oxidation

[0077]

[0078] Further, the method of selecting a deep purification process to process the raw oil or intermediate oil to obtain the base oil and dynamically adjusting the control parameters of the deep purification process includes:

[0079] Regenerating the raw oil or intermediate oil at a preset time to obtain primary purified oil;

[0080] The raw oil, the intermediate oil or the primary purified oil is heated to a preset temperature and then dehydrated to obtain the secondary purified oil;

[0081] The raw oil, the intermediate oil, the primary purified oil or the secondary purified oil is filtered for a preset time to obtain the base oil;

[0082] The basic index parameters of the base oil are obtained through online monitoring. Based on the comparison and analysis between the basic index parameters of the base oil and the standard threshold values, if the basic index parameters of the base oil do not meet the standard threshold values, the base oil is returned to step S3 for further processing until the basic index parameters of the base oil meet the standard threshold values.

[0083] Furthermore, the method of heating the raw oil, the intermediate oil or the primary purified oil to a preset temperature and then performing a dehydration treatment to obtain the secondary purified oil comprises:

[0084] The temperature parameters of the raw oil, intermediate oil or primary purified oil are obtained through online monitoring, and the temperature is dynamically increased to make the oil reach the preset temperature required for flash vaporization;

[0085] The raw oil, intermediate oil or primary purified oil heated to a preset temperature is atomized, and the water vaporized and separated during the atomization process is removed by condensation to obtain secondary purified oil.

[0086] Through the implementation of the above-mentioned online monitoring and treatment method for phosphate fire-resistant oil, the deep purification process mainly includes three functions: regeneration treatment, dehydration treatment and filtration treatment. The regeneration treatment is mainly aimed at the acid value and volume resistivity indicators. It uses molecular polar adsorbents and uses an oil pump to pressurize the intermediate oil. The intermediate oil is pressurized through a regenerator equipped with an adsorbent, and fully reacts with the adsorbent in the process to complete the regeneration of the intermediate oil, so as to reduce the acid value of the intermediate oil and improve the key performance indicators such as the resistivity of the intermediate oil; the dehydration treatment is mainly aimed at the moisture index, and a physical method of vacuum flash evaporation is used. By constructing a vacuum environment and using the flash evaporation principle to remove the moisture in the intermediate oil, the vaporized moisture is collected in the condenser and condensed and liquefied, and then removed to complete the dehydration of the intermediate oil, and atomization treatment is used to fully vaporize the moisture in the intermediate oil, accelerate the vaporization speed, and ensure the degree of dehydration; the filtration treatment is mainly aimed at the particle contamination index, and a two-stage series mechanical impurity removal is used to connect different high-precision filters in series, so that the intermediate oil passes through the two-stage filter under the pressure of the oil pump, and the filtration accuracy of the first-stage filter is 3 , the replacement range can be 3-10 ; The filtration accuracy of the secondary filter is 1 , the replacement range can be 1-3 The use of two-stage high-precision filters in series ensures that particulate impurities in the intermediate oil are fully removed. The above three processing functions can be operated separately or in conjunction, depending on the performance index parameters of the phosphate ester fire-resistant oil monitored in real time.

[0087] Furthermore, it also includes a method for recovering and reusing oil during the online monitoring process of phosphate fire-resistant oil:

[0088] Determine the oil circuit of the consumable device to be replaced, and introduce the phosphate fire-resistant oil in the oil circuit into a vacuum environment under negative pressure for recovery and filtration;

[0089] After the consumables are replaced, the recovered filtered phosphate fire-resistant oil is injected into the oil circuit before recovery at a preset pressure.

[0090] Through the implementation of the above-mentioned phosphate ester fire-resistant oil online monitoring and processing method, the oil circuit of the consumable device to be replaced is recycled and filtered. When it is necessary to replace consumables such as regenerators and filters, the phosphate ester fire-resistant oil in the oil circuit of the consumable device to be replaced is extracted through a vacuum negative pressure environment, and after the consumables are replaced, the phosphate ester fire-resistant oil is filtered through 1 After the high-precision filter removes particulate impurities, it is pressurized and returned to the oil circuit for further processing, thereby achieving resource conservation and green and environmentally friendly production.

[0091] Furthermore, the method of selecting a blending process to process the base oil to obtain a finished oil and dynamically adjusting the control parameters of the blending process includes:

[0092] Compare and analyze the key index parameters of the base oil with the standard threshold, and prepare the additive mother solution according to the key index parameters that do not meet the standard threshold;

[0093] The base oil and the additive mother solution are stirred and mixed at a preset temperature, and the finished oil is obtained after a preset time;

[0094] By online monitoring of changes in key indicator parameters of finished oil, the heating temperature and injection dosage of additive mother solution are dynamically adjusted until the key indicator parameters of finished oil monitored online meet the standard thresholds.

[0095] Furthermore, the invention also includes a method for preparing an additive mother solution:

[0096] Matching a number of corresponding types of additives according to key indicator parameters that do not meet standard thresholds, and determining the proportion of dosage of the several additives;

[0097] A mother liquid base liquid is obtained by sampling the base oil, and the mother liquid base liquid and a plurality of additives are stirred, mixed and heated according to a proportion and dosage until the mother liquid base liquid and the plurality of additives are fully mixed to obtain an additive mother liquid.

[0098] Furthermore, the method of matching several corresponding types of additives according to the key indicator parameters that do not meet the standard threshold and determining the proportion of the several additives includes:

[0099] The key index parameters of base oil including foam characteristic parameters, oxidation stability parameters and hydrolysis stability parameters are obtained through online monitoring, and the capacity of mother liquid base liquid is preset;

[0100] When it is analyzed that the foam characteristic parameters do not meet the standard threshold, the matching additive is a defoamer, and the proportion of the additive is calculated according to the preset capacity of the mother liquid base liquid;

[0101] When it is analyzed that the oxidation stability parameter does not meet the standard threshold, the matching additive is an antioxidant, and the proportion of the additive is calculated according to the preset capacity of the mother liquid base liquid;

[0102] When it is analyzed that the hydrolysis stability parameter does not meet the standard threshold, the matching additive is an anti-hydrolysis agent, and the proportion of the additive is calculated according to the preset capacity of the mother liquid base liquid.

[0103] Through the implementation of the above-mentioned online monitoring and processing method for phosphate fire-resistant oil, the specific preparation method of the additive mother liquid is to use online monitoring to obtain key index parameters such as the foam characteristic index, oxidation stability index and hydrolysis stability index of the base oil, and respectively match various additives such as defoamers, antioxidants, and anti-hydrolysis agents. First, the capacity of the mother liquid base liquid required for the preparation of the additive mother liquid is preset, and part of the base oil is drawn from the micro-oxidation treated base oil according to the preset capacity as the mother liquid base liquid, and through some pre-established formula models, the dosage of various additives is calculated according to the capacity of the mother liquid base liquid, so that various additives and the mother liquid base liquid are heated and stirred according to their respective determined doses to obtain the additive mother liquid. Then, the additive mother liquid is injected into the blending kettle and stirred and mixed with the micro-oxidation treated base oil, and heated to 60°C at the same time, so that the base oil and each additive are quickly and evenly blended in a certain proportion, and the finished oil is obtained. To ensure that the key index parameters of phosphate fire-resistant oil are stably improved, thereby improving the quality of phosphate fire-resistant oil after treatment.

[0104] As mentioned above, the stirring and mixing of the additive mother liquid and the base oil can be carried out by bipolar stirring, and the alternative range of the driving force is 1-5 levels, the form is not limited, and the number and shape of the blades are not limited. According to the online monitoring results, the compounding ratio of various additives such as defoamers, antioxidants, and anti-hydrolysis agents to the mother liquid base liquid is dynamically adjusted. For example, when the foam characteristic index exceeds the standard, the defoamer is added, and the defoamer is 0.005wt%-0.01wt% of the base oil capacity; when the oxidation stability index exceeds the standard, the antioxidant is added, and the antioxidant is 0.1wt%-0.5wt% of the base oil capacity. When the hydrolysis stability index exceeds the standard, the anti-hydrolysis agent is added, and the anti-hydrolysis agent is 0.05wt%-0.3wt% of the base oil capacity. Preferably, the defoamer is 0.005wt%, the antioxidant is 0.1wt%, and the anti-hydrolysis agent is 0.05wt%. In addition, the heating temperature of each treatment process is 60°C, and the replacement range can be 40-60°C.

[0105] The online monitoring and processing method for phosphate fire-resistant oil in the embodiment of the present invention combines online monitoring with multiple processing processes of phosphate fire-resistant oil to achieve real-time monitoring of control parameters of each processing process, basic index parameters and key index parameters of phosphate fire-resistant oil when phosphate fire-resistant oil is subjected to multiple processing processes, and can be dynamically adjusted to adapt to the processing requirements of phosphate fire-resistant oil of different oil quality, thereby achieving the best processing effect while improving production efficiency and ensuring the optimization of the processing effect.

[0106] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A method for online monitoring and processing of phosphate fire-resistant oil, characterized in that: The phosphate ester fire-resistant oil online monitoring and processing method comprises: S1. According to the standard threshold of the performance index of the phosphate ester fire-resistant oil, select the feedstock oil that does not meet the standard threshold; S2, analyzing the content of easily degradable substances in the crude oil through online monitoring, selecting a micro-oxidation process according to the analysis result and dynamically adjusting the control parameters of the micro-oxidation process, treating the crude oil to obtain an intermediate oil, wherein the micro-oxidation process sequentially comprises configuring an oxidation kettle containing a catalyst, injecting oxygen into the oxidation kettle, introducing the crude oil into the oxidation kettle for heating and then spraying it on the catalyst for reaction, and dynamically adjusting the heating temperature, as well as the injection dosage and pressure of the oxygen; S3, obtaining basic index parameters of the raw oil or the intermediate oil through online monitoring, selecting a deep purification process and dynamically adjusting control parameters of the deep purification process according to a comparison analysis of the basic index parameters and the standard threshold, treating the raw oil or the intermediate oil to obtain a base oil, wherein the deep purification process includes a regeneration process, a temperature increase dehydration process, and a filtration process, and dynamically adjusting a temperature parameter; S4. Obtain key indicator parameters of the base oil through online monitoring, select a blending process and dynamically adjust control parameters of the blending process based on a comparison analysis of the key indicator parameters and the standard threshold value, and process the base oil to obtain a finished oil. The blending process sequentially includes preparing an additive mother liquor, heating and mixing the base oil and the additive mother liquor, and dynamically adjusting the heating temperature, as well as the injection dosage of the additive mother liquor.

2. The method for online monitoring and processing of phosphate fire-resistant oil according to claim 1, characterized in that: The method of selecting a micro-oxidation process to process the crude oil to obtain an intermediate oil according to the analysis result and dynamically adjusting the control parameters of the micro-oxidation process comprises: Matching a catalyst according to the components of the easily degradable substances in the crude oil, and presetting an oxidation kettle containing the catalyst; Injecting oxygen into the oxidation kettle until the preset oxygen concentration in the oxidation kettle is reached, and introducing the feedstock oil into the oxidation kettle; The raw oil is heated, and after the raw oil is heated to a preset temperature, it is atomized and sprayed on the catalyst for micro-oxidation treatment to obtain the intermediate oil; By online monitoring the change of the easily degradable substance content in the intermediate oil, the heating temperature, as well as the injection dosage and pressure of oxygen are dynamically adjusted until the online monitoring and analysis shows that the easily degradable substance content in the intermediate oil reaches a preset content.

3. The method for online monitoring and processing of phosphate fire-resistant oil according to claim 2, characterized in that: Also included is a method for determining the next level of processing of the crude oil: The content of easily degradable substances in the crude oil is obtained through online monitoring, and when the content of easily degradable substances does not reach the preset standard content, the crude oil is introduced into step S2 for treatment; The content of easily degradable substances in the crude oil is obtained through online monitoring, and when the content of easily degradable substances reaches the preset standard content through analysis, but the basic index parameter does not meet the standard threshold, the crude oil is introduced into step S3 for processing.

4. The method for online monitoring and processing of phosphate fire-resistant oil according to claim 3, characterized in that: When the analyzed easily degradable substance content does not reach the preset standard content, the method of introducing the raw oil into step S2 for treatment includes: Presetting the processing time of the micro-oxidation process, and processing the crude oil whose content of easily degradable substances does not reach the preset standard content through step S2; Obtaining the change of the easily degradable substance content of the crude oil through online monitoring, and if the easily degradable substance content of the crude oil still does not reach the preset standard content after the preset processing time, dynamically extending the processing time; The changes in the content of easily degradable substances in the crude oil are continuously obtained through online monitoring. If the content of easily degradable substances in the crude oil still does not reach the preset standard content after the extended processing time, the processing time will continue to be dynamically extended until the content of easily degradable substances in the crude oil reaches the preset standard content.

5. The method for online monitoring and processing of phosphate fire-resistant oil according to claim 1, characterized in that: The method of selecting a deep purification process to process the feedstock oil or the intermediate oil to obtain a base oil and dynamically adjusting the control parameters of the deep purification process includes: Regenerating the raw oil or the intermediate oil for a preset time to obtain primary purified oil; The raw oil, the intermediate oil or the primary purified oil is heated to a preset temperature and then dehydrated to obtain secondary purified oil; The raw oil, the intermediate oil, the primary purified oil or the secondary purified oil is filtered for a preset time to obtain the base oil; The basic index parameters of the base oil are obtained through online monitoring. According to the comparison and analysis between the basic index parameters of the base oil and the standard threshold, if the basic index parameters of the base oil do not meet the standard threshold, the base oil is returned to step S3 for further processing until the basic index parameters of the base oil meet the standard threshold.

6. The method for online monitoring and processing of phosphate fire-resistant oil according to claim 5, characterized in that: The method of heating the raw oil, the intermediate oil or the primary purified oil to a preset temperature and then performing a dehydration treatment to obtain the secondary purified oil comprises: Obtaining the temperature parameters of the raw oil, the intermediate oil or the primary purified oil through online monitoring, and dynamically raising the temperature so that the oil reaches a preset temperature required for flash vaporization; The raw oil, the intermediate oil or the primary purified oil heated to a preset temperature is atomized, and the water vaporized and separated during the atomization process is removed by condensation to obtain the secondary purified oil.

7. The method for online monitoring and processing of phosphate fire-resistant oil according to claim 5 or 6, characterized in that: It also includes a method for recovering and reusing oil during the online monitoring process of the phosphate fire-resistant oil: Determine the oil circuit of the consumable device to be replaced, and introduce the phosphate fire-resistant oil in the oil circuit into a vacuum environment under negative pressure for recovery and filtration; After the consumables are replaced, the recovered filtered phosphate fire-resistant oil is injected into the oil circuit before recovery at a preset pressure.

8. The method for online monitoring and processing of phosphate fire-resistant oil according to claim 1, characterized in that: The method of selecting a blending process to process the base oil to obtain a finished oil and dynamically adjusting the control parameters of the blending process includes: Comparing and analyzing the key index parameters of the base oil with the standard threshold, and preparing an additive mother solution according to the key index parameters that do not meet the standard threshold; Stirring and mixing the base oil and the additive mother solution at a preset temperature, and obtaining the finished oil after a preset time; By online monitoring the changes in the key indicator parameters of the finished oil, the heating temperature and the injection dosage of the additive mother solution are dynamically adjusted until the key indicator parameters of the finished oil monitored online and analyzed meet the standard thresholds.

9. The method for online monitoring and processing of phosphate fire-resistant oil according to claim 8, characterized in that: Also included is a method for preparing an additive mother solution: Matching a number of corresponding types of additives according to the key indicator parameters that do not meet the standard threshold, and determining a ratio of dosage of the number of the additives; A mother liquid base liquid is obtained by sampling the base oil, and the mother liquid base liquid and a plurality of the additives are stirred, mixed and heated according to the proportion of dosage until the mother liquid base liquid and the plurality of the additives are fully mixed to obtain the additive mother liquid.

10. The method for online monitoring and processing of phosphate fire-resistant oil according to claim 9, characterized in that: The method of matching a plurality of corresponding types of additives according to the key indicator parameters that do not meet the standard threshold and determining the proportion of the dosage of the plurality of additives includes: Obtaining key index parameters of the base oil including foam characteristic parameters, oxidation stability parameters and hydrolysis stability parameters through online monitoring, and presetting the capacity of the mother liquid base liquid; When it is analyzed that the foam characteristic parameter does not meet the standard threshold, the additive is matched as a defoaming agent, and the proportion dosage of the additive is calculated according to the preset capacity of the mother liquid base liquid; When it is analyzed that the oxidation stability parameter does not meet the standard threshold, the additive is matched with an antioxidant, and the proportion dosage of the additive is calculated according to the preset capacity of the mother liquid base liquid; When it is analyzed that the hydrolysis stability parameter does not meet the standard threshold, the additive is matched as an anti-hydrolysis agent, and the proportion dosage of the additive is calculated according to the preset capacity of the mother liquid base liquid.

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