Composite phenol disinfectant and preparation method thereof

Abstract

The invention discloses a compound phenol disinfectant and a preparation method thereof. The compound phenol disinfectant comprises the following components: crude phenol, dodecylbenzene sulfonic acid, acetic acid, phosphoric acid and water, wherein the mass percent of the crude phenol is 40-50%, the mass percent of the dodecylbenzene sulfonic acid is 15-22%, the mass percent of the acetic acid is 22-26%, the mass percent of the phosphoric acid is 2-8%, and the balance is water. The dodecylbenzene sulfonic acid and the phosphoric acid are added into the compound phenol disinfectant, so that the stability, the dispersity and the water solubility of the compound phenol disinfectant can be effectively improved, the compound phenol disinfectant is not easy to oxidize and deteriorate, the storage time is prolonged, and the sterilization and disinfection strength and the broad-spectrum property of the disinfectant can be further improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of disinfectants, and more particularly relates to a composite phenol disinfectant and a preparation method. BACKGROUND

[0002] The composite phenol disinfectant is a disinfectant that can be used on the surface of an object, and the main components include phenolic compounds. It achieves the killing effect of bacteria, viruses, fungi and other pathogenic microorganisms mainly by destroying the cell membrane, protein, nucleic acid, metabolism interference or other specific effects of microorganisms. Due to its high-efficiency and broad-spectrum chemical disinfection performance, it is widely used for disinfection of the environment, utensils, and excrement in livestock and poultry breeding scenes.

[0003] However, the stability of conventional crude phenol is generally affected by multiple factors such as storage conditions, environmental factors (such as light, temperature, pH), etc. For example, crude phenol is easily oxidized to form benzoquinone in air. When a small amount of crude phenol is oxidized to benzoquinone, benzoquinone combines with crude phenol to form a complex red substance, causing the crude phenol to appear pink. It can also cause phenolic solubility and diffusion, increasing the contact area with oxygen, further increasing discoloration. The disinfection effect of the discolored composite phenol disinfectant will be greatly attenuated. Therefore, the stability and disinfection effect of the composite phenol disinfectant need to be improved. SUMMARY

[0004] To solve the above problems and overcome the shortcomings of the prior art, the present application provides a high-performance and stable composite phenol disinfectant and a preparation method. Furthermore, the water solubility of crude phenol is further improved, which facilitates the temporary preparation of subsequent actual disinfection sites, is convenient to use, and effectively solves the technical problems of low stability, disinfection effect attenuation, harsh storage conditions, and discoloration of existing composite phenol disinfectants.

[0005] The specific technical scheme of the present application is as follows: a composite phenol disinfectant comprises crude phenol, dodecylbenzenesulfonic acid, acetic acid, phosphoric acid, and the balance of water; wherein the mass percentage of crude phenol is 40-50%, the mass percentage of dodecylbenzenesulfonic acid is 15-22%, the mass percentage of acetic acid is 22-26%, the mass percentage of phosphoric acid is 2-8%, and the balance is water.

[0006] The preparation method of the composite phenol disinfectant comprises the following steps: S1. According to the proportion of raw materials, ice acetic acid, dodecylbenzenesulfonic acid, phosphoric acid (85 W / W%), crude phenol and water are weighed and mixed in a mixing container to obtain a mixed solution; S2. The mixed solution is mixed by a mixing device; S3. Filtering and outputting to obtain the composite phenol disinfectant.

[0007] The preparation method is particularly suitable for industrial-scale production.

[0008] Optionally, the raw materials are fed into the mixing container by the first conveying pump, and the raw materials are sequentially fed into the mixing container in the order of glacial acetic acid, dodecylbenzenesulfonic acid, phosphoric acid, crude phenol and water.

[0009] Optionally, the mixing device comprises a return pipeline and a second conveying pump, the return pipeline is connected to the upper and lower ends of the mixing container, and the mixed solution in the mixing container is circulated and mixed through the return pipeline.

[0010] Optionally, the return pipeline comprises a first end arranged at the bottom of the mixing container and a second end arranged at the top of the mixing container, and the bottom of the mixing container is inclined around the first end, wherein the first port is arranged at the lowest position.

[0011] Optionally, the mixing device comprises a stirring device, the stirring device comprises a stirring shaft, a stirring paddle and a driving motor, and the stirring device drives the stirring paddle to rotate through the driving motor.

[0012] Optionally, one end of the discharge pipeline is connected to the bottom or lower part of the mixing container, the other end is connected to the filling equipment of the composite phenol disinfectant through the filtering device, and the discharge pipeline is connected to the second conveying pump.

[0013] Optionally, the mixing container and the mixing container are composed of acid-resistant and corrosion-resistant materials.

[0014] Optionally, the discharge pipeline further comprises a cleaning pipeline.

[0015] The present application has the advantages of providing a composite phenol disinfectant with high water solubility and strong stability, and a preparation method. In the present application, the addition of dodecylbenzenesulfonic acid and phosphoric acid in the composite phenol disinfectant can effectively improve the stability, dispersibility and water solubility of the composite phenol disinfectant, and the composite phenol disinfectant is not easy to be oxidized and deteriorated, and the storage time is prolonged. Furthermore, the disinfectant can further improve the strength and broad spectrum of disinfection and sterilization, and can prevent the corrosion of crude phenol to mechanical metal equipment to some extent, and is convenient for practical disinfection operation in livestock and poultry breeding scenes. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the production equipment of the composite phenol disinfectant of the present application.

[0017] Figure 2 It is a schematic diagram of the mixing container of the present application.

[0018] Figure 3 It is another schematic diagram of the mixing container of the present application.

[0019] Figure 4 It is a schematic diagram of the stirring device of the present application.

[0020] Figure 5 It is a schematic diagram of the stirring paddle of the present application.

[0021] BRIEF DESCRIPTION OF DRAWINGS 1, ingredient container; 10, first delivery pump; 11, first ingredient container; 12, second ingredient container; 13, third ingredient container; 14, fourth ingredient container; 2, mixing container; 20, second delivery pump; 3, feeding pipeline; 31, first feeding pipeline; 32, second feeding pipeline; 33, third feeding pipeline; 34, fourth feeding pipeline; 300, feeding pipeline intermediate section; 310, first feeding pipeline intermediate section; 320, second feeding pipeline intermediate section; 330, third feeding pipeline intermediate section; 340, fourth feeding pipeline intermediate section; 4, return pipeline; 5, discharge pipeline; 6, stirring device; 61, stirring shaft; 62, stirring paddle; 621, avoidance zone. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0023] It should be noted that all the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0024] It should also be noted that when an element is referred to as being “fixed to” or “set on” another element, it can be directly on the other element or there can be a middle element. When an element is referred to as being “connected to” another element, it can be directly connected to the other element or there can be a middle element.

[0025] In addition, the descriptions of “first”, “second” and the like in the present application are only for descriptive purposes, and cannot be understood as indicating or implying the relative importance of the technical features indicated or implying the number of the technical features indicated. Therefore, the features defined as “first”, “second” can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.

[0026] The composite phenol disinfectant comprises crude phenol, dodecyl benzene sulfonic acid, acetic acid, phosphoric acid and the balance of water; wherein the mass percentage of the crude phenol is 40-50%, the mass percentage of the dodecyl benzene sulfonic acid is 15-22%, the mass percentage of the acetic acid is 22-26%, the mass percentage of the phosphoric acid is 2-8%, and the balance is water.

[0027] In the present application, the dodecyl benzene sulfonic acid and the phosphoric acid are added in the composite phenol disinfectant, and the mass percentages thereof are 15-22% and 2-8% respectively, so that the stability, dispersibility and water solubility of the composite phenol disinfectant can be effectively improved, the composite phenol disinfectant is not easy to be oxidized and deteriorated in the air, the storage time is prolonged, and the disinfecting strength and broad spectrum of the disinfectant can be further improved.

[0028] The preparation method of the composite phenol disinfectant comprises the following steps: according to the proportion of raw materials, ice acetic acid, dodecyl benzene sulfonic acid, phosphoric acid solution (85W / W%), crude phenol and water are weighed and placed in a mixing container, and the composite phenol disinfectant is obtained by mixing and filtering.

[0029] The beneficial effects of the composite phenol disinfectant in the present application are described below through embodiments.

[0030] I. Preparation of the composite phenol disinfectant 1. Composite phenol disinfectant sample 1 The composite phenol disinfectant comprises crude phenol, dodecyl benzene sulfonic acid, acetic acid, phosphoric acid and the balance of water; wherein the mass percentage of the crude phenol is 45%, the mass percentage of the dodecyl benzene sulfonic acid is 20%, the mass percentage of the acetic acid is 25%, the mass percentage of the phosphoric acid is 2%, and the balance is water.

[0031] 1) According to the proportion of raw materials, 450g of crude phenol, 250g of ice acetic acid, 200g of dodecyl benzene sulfonic acid, 23.5g of phosphoric acid solution (85W / W%) and the balance of water are weighed.

[0032] 2) The raw materials weighed in step 1) are transported to a mixing container to obtain a mixed solution, the mixed solution is uniformly mixed, and the composite phenol disinfectant is obtained by filtering, which is a deep red-brown viscous liquid.

[0033] 2. Composite phenol disinfectant sample 2 The composite phenol disinfectant comprises crude phenol, dodecyl benzene sulfonic acid, acetic acid, phosphoric acid and the balance of water; wherein the mass percentage of the crude phenol is 45%, the mass percentage of the dodecyl benzene sulfonic acid is 20%, the mass percentage of the acetic acid is 25%, the mass percentage of the phosphoric acid is 4%, and the balance is water.

[0034] The preparation method of the composite phenol disinfectant sample 2 is the same as that of the composite phenol disinfectant 1, and only the addition amount of the raw materials is different. Finally, the composite phenol disinfectant sample 2 is prepared, which is a deep red-brown viscous liquid.

[0035] 3. Compound phenolic disinfectant sample 3 A compound phenolic disinfectant comprises crude phenol, dodecylbenzenesulfonic acid, acetic acid, phosphoric acid, and the balance of water; wherein the mass percentage of crude phenol is 45%, the mass percentage of dodecylbenzenesulfonic acid is 20%, the mass percentage of acetic acid is 25%, the mass percentage of phosphoric acid is 6%, and the balance is water.

[0036] The preparation method of the compound phenolic disinfectant sample 3 is the same as that of the compound phenolic disinfectant 1, only the addition amount of raw materials is different. Finally, the compound phenolic disinfectant sample 3 is prepared, which presents a deep reddish-brown viscous liquid.

[0037] 4. Compound phenolic disinfectant sample 4 A compound phenolic disinfectant comprises crude phenol, dodecylbenzenesulfonic acid, acetic acid, phosphoric acid, and the balance of water; wherein the mass percentage of crude phenol is 45%, the mass percentage of dodecylbenzenesulfonic acid is 20%, the mass percentage of acetic acid is 25%, the mass percentage of phosphoric acid is 8%, and the balance is water.

[0038] The preparation method of the compound phenolic disinfectant sample 4 is the same as that of the compound phenolic disinfectant 1, only the addition amount of raw materials is different. Finally, the compound phenolic disinfectant sample 4 is prepared, which presents a deep reddish-brown viscous liquid.

[0039] 5. Compound phenolic disinfectant control sample 5 A compound phenolic disinfectant comprises crude phenol, dodecylbenzenesulfonic acid, acetic acid, phosphoric acid, and the balance of water; wherein the mass percentage of crude phenol is 45%, the mass percentage of dodecylbenzenesulfonic acid is 20%, the mass percentage of acetic acid is 25%, no phosphoric acid is added, and the balance is water.

[0040] The preparation method of the compound phenolic disinfectant control 1 is the same as that of the compound phenolic disinfectant 1, no phosphoric acid is added, and the amount of water is correspondingly increased. Finally, the compound phenolic disinfectant control sample 5 is prepared, which presents a deep reddish-brown viscous liquid.

[0041] 6. Compound phenolic disinfectant control sample 6 A compound phenolic disinfectant comprises crude phenol, dodecylbenzenesulfonic acid, acetic acid, phosphoric acid, and the balance of water; wherein the mass percentage of crude phenol is 45%, the mass percentage of dodecylbenzenesulfonic acid is 20%, the mass percentage of acetic acid is 25%, hydrochloric acid is used instead of phosphoric acid, the mass percentage of hydrochloric acid is 3.6%, and the balance is water.

[0042] The preparation method of the compound phenolic disinfectant control 2 is the same as that of the compound phenolic disinfectant 1, hydrochloric acid is used instead of phosphoric acid, and the amount of water is correspondingly reduced. Finally, the compound phenolic disinfectant control sample 6 is prepared, which presents a deep reddish-brown viscous liquid.

[0043] The composite phenolic disinfectant samples 1-4 and the composite phenolic disinfectant control samples 5-6 prepared according to the present application all present a deep reddish-brown viscous liquid, indicating that the preparation method used in the present application can effectively disperse various raw materials and can efficiently obtain a uniformly dispersed composite phenolic disinfectant.

[0044] II. Stability detection of the composite phenolic disinfectant The above composite phenolic disinfectant samples 1-4 and the composite phenolic disinfectant control samples 5-6 were subjected to stability testing, the content of effective components of each composite phenolic disinfectant sample after treatment was detected, and the composite phenolic disinfectant samples after treatment were subjected to bactericidal testing experiments. The specific testing method is as follows: 1. Stability testing: 100 ml of each of the above samples was accurately weighed and poured into a 500 mL sealed container, the container containing the disinfectant was placed in a constant temperature oven at 54°C, and after 14 days of placement, it was removed and the appearance of the disinfectant was observed and the content of the effective components therein was detected.

[0045] The component content results of each composite phenolic disinfectant sample are shown in Table 1.

[0046] Table 1 Stability detection results of different composite phenolic disinfectant samples Sample Sample appearance Crude phenol mass content (%) Crude phenol content reduction rate (%) Acetic acid mass content (%) Acetic acid content reduction rate (%) 1 Dark red-brown viscous liquid, no precipitate 42.0 6.7 23.4 6.4 2 Dark red-brown viscous liquid, no precipitate 42.6 5.3 23.5 6.0 3 Dark red-brown viscous liquid, no precipitate 42.9 4.7 23.7 5.2 4 Dark red-brown viscous liquid, no precipitate 43.0 4.4 23.7 5.2 5 Dark red-brown viscous liquid, no precipitate 41.2 8.4 23.0 8.0 6 Dark red-brown viscous liquid, no precipitate 41.0 8.9 23.2 7.2 The phosphoric acid content of the composite phenolic disinfectant samples 1-4 was 2.0%, 4.0%, 6.0%, and 8.0%, respectively, sample 5 was a composite phenolic disinfectant without phosphoric acid, and sample 6 was a composite phenolic disinfectant in which hydrochloric acid was used instead of phosphoric acid.

[0047] According to Table 1, the appearance of the composite phenolic disinfectant samples 1-6 was all viscous liquid, and no precipitate appeared. It can be seen that after treatment in the constant temperature oven, samples 1-6 did not show obvious changes, only samples 5 and 6 had slightly darker color, a small amount of oxidation occurred, but no precipitate appeared, indicating that the degree of oxidation was very slight. Combined with the fact that the decrease rate of crude phenol and acetic acid in the composite phenolic disinfectant samples 1-6 was all less than 10%, it is verified that there was no significant decrease in effective components. All of this indicates that the product prepared according to the present application has good stability.

[0048] Specifically, the decrease rates of crude phenol and acetic acid in the composite phenolic disinfectant sample 5 without phosphoric acid were 8.4% and 8%, respectively, which were significantly higher than those of the composite phenolic disinfectant samples 1-4 containing phosphoric acid components. It can be seen that the addition of phosphoric acid can effectively improve the stability of the composite phenolic disinfectant sample. By comparing the decrease rates of effective components of the composite phenolic disinfectant samples 1-4, it can be seen that with the increase of the content of phosphoric acid, the stability of the sample gradually increases, the decrease rate of crude phenol in sample 4 is only 4.4%, and the decrease rate of acetic acid is only 5.2%, showing very high stability.

[0049] For the composite phenolic disinfectant sample 6, compared with sample 5, the addition of hydrochloric acid component does not show obvious improvement of the stability of the composite phenolic disinfectant, but has a small amount of side effects. It can be seen that the addition of hydrochloric acid is not beneficial to the stability of the composite phenolic disinfectant.

[0050] 2. Take the composite phenolic disinfectants 1-5 after 14 days of the foregoing treatment for sterilization test experiment, and the specific experimental method is as follows: 1) Take the composite phenolic disinfectant sample and deionized water respectively according to the mass ratio of 1:200, stir uniformly to obtain diluted disinfectant samples 1-5.

[0051] 2) Take Staphylococcus aureus as the sterilization object, mix and stir the diluted composite phenolic disinfectant samples 1-5 with Staphylococcus aureus suspension for 10 min, and calculate the sterilization rate.

[0052] The experimental results show that the sterilization rates of the composite phenolic disinfectant samples 1-5 are all 100%. It can be seen that the composite phenolic disinfectant samples obtained by the preparation method of the application all have very high sterilization and disinfection performance.

[0053] According to the test results, it can be seen that the composite phenolic disinfectant prepared by the method of the application can well play the dispersion performance and improve the disinfection effect of the composite phenolic disinfectant, has excellent stability, and as the content of phosphoric acid increases, the stability of the composite phenolic disinfectant is improved.

[0054] The application also provides a preparation method of a composite phenolic disinfectant, comprising the following steps: S1. According to the raw material ratio, the glacial acetic acid, dodecyl benzene sulfonic acid, phosphoric acid (85 W / W%), crude phenol and water are weighed and mixed in a mixing container 2 to obtain a mixed solution; S2. The mixed solution is uniformly mixed by a mixing device, and the mixing time is T; S3. Filtering output, to obtain the composite phenolic disinfectant.

[0055] Specifically, referring to the accompanying drawings, Figure 1 The batching container 1 is provided, and the mixing container 2 is provided. The batching container 1 has a plurality of batching containers 1, and each batching container 1 and the mixing container 2 are connected through the feeding pipeline 3. The first conveying pump 10 is arranged on the feeding pipeline 3. The mixing container 2 is connected with the discharging pipeline 5. One end of the discharging pipeline 5 is connected with the bottom or lower part of the mixing container 2. The other end of the discharging pipeline 5 is connected with the production back end of the composite phenolic disinfectant through the filtering device, for example, the storage pool of the filling workshop, and the discharging pipeline 5 is connected with the second conveying pump 20. The mixed solution is input into the filling equipment after filtering. In the filling workshop, the prepared composite phenolic disinfectant solution is subjected to filling, packaging and other processes to obtain the final composite phenolic disinfectant product.

[0056] Specifically, different raw materials are respectively placed in the corresponding ingredient containers 1, the different raw materials are weighed and obtained from the ingredient containers 1, the raw materials are conveyed into the mixing container 2 by the first conveying pump 10, and the uniform mixing operation is performed for a time T. After the uniform mixing operation, the mixed solution passes through the filtering device on the discharge pipeline 5 and is output for packaging. In an embodiment, as shown in Figure 1 The production equipment of the composite phenolic disinfectant includes four ingredient containers 1: a first ingredient container 11, a second ingredient container 12, a third ingredient container 13, and a fourth ingredient container 14. Different kinds of raw materials are respectively placed in the ingredient containers 1. Each ingredient container 1 and the mixing container 2 are connected by the feeding pipeline 3. The four ingredient containers 1 are respectively connected by the corresponding feeding pipelines 3: a first feeding pipeline 31, a second feeding pipeline 32, a third feeding pipeline 33, and a fourth feeding pipeline 34. The first conveying pump 10 is arranged on each feeding pipeline 3 to provide power for conveying the raw materials into the mixing container 2, conveying the raw materials in the different ingredient containers 1 into the mixing container 2 to obtain a mixed solution, and uniformly mixing the mixed solution. This kind of mode can be well applied to industrial production. In the actual industrial production process, the production amount of the composite phenolic disinfectant can reach the ton level. Alternatively, a plurality of raw materials can be directly weighed and obtained and placed in the mixing container 2, and then subsequent uniform mixing operation, filtering and outputting are performed to obtain the composite phenolic disinfectant.

[0057] In an embodiment, the ingredient containers 1 and the mixing container 2 are at least partially composed of acid-resistant and corrosion-resistant materials. Further, in an embodiment, the ingredient containers 1 and the mixing container 2 are container tanks made of polyethylene materials, or are stainless steel containers or carbon steel containers with polytetrafluoroethylene lining, or can alternatively be containers with other common corrosion-resistant coatings and linings.

[0058] In an embodiment, the number of the ingredient containers 1 in the production equipment of the composite phenolic disinfectant can be as many as the types of raw materials, or can be less than the types of raw materials. In the case where the number of the ingredient containers 1 is equal to the types of raw materials, a plurality of raw materials are added to one mixing container, and then subsequent uniform mixing operation is performed.

[0059] In one embodiment, the order of the raw materials into the mixing container 2 is glacial acetic acid, dodecyl benzene sulfonic acid, phosphoric acid, crude phenol and water, so that the dodecyl benzene sulfonic acid can be dissolved in the glacial acetic acid, the phosphoric acid can also be better mixed downward because of the large density, and can be well soluble with the glacial acetic acid, so as to mix with the dodecyl benzene sulfonic acid, and then can better dissolve and disperse the crude phenol, solve the problem of poor solubility of water and crude phenol, and the density of water is relatively small compared with the crude phenol, so the water can be well kept on the crude phenol, that is, the top layer separates the oxygen in the mixing container 2, reduces the amount of dissolved oxygen, and prevents the crude phenol from being oxidized. During the mixing process, because the dodecyl benzene sulfonic acid has a large density and can be better dissolved in the glacial acetic acid by using its own gravity, the high density of the phosphoric acid can be well soluble with the glacial acetic acid so as to achieve uniform mixing state with the dodecyl benzene sulfonic acid, thereby improving the dispersion effect of the crude phenol in the solution and enhancing the stability of the crude phenol. The raw materials are further mixed under the action of the mixing device, the mixing time is shortened, and finally the high-quality composite phenol disinfectant is obtained. Compared with the existing disinfectant, the composite phenol of the present application effectively avoids oxidation, the composite phenol disinfectant prolongs the storage stability, and further improves the strength and broad spectrum of the disinfectant. This method is especially suitable for large-scale industrial production, and the amount of the composite phenol disinfectant mixed by various raw materials reaches 10 tons or more.

[0060] Further, in one embodiment, referring to Figure 2 , the mixing device includes a return pipe 4 and a second conveying pump 20 Figure 2 (not shown), specifically, the return pipe 4 is connected to the upper and lower ends of the mixing container 2, the return pipe 4 includes a first end arranged at the bottom of the mixing container 2 and a second end arranged at the top of the mixing container 2, the first end of the return pipe 4 is connected to the lower part or the bottom of the mixing container 2, and the second end of the return pipe 4 is connected to the upper part or the top of the mixing container 2. The second conveying pump 20 is arranged on the return pipe 4, and when the second conveying pump 20 is started, the mixed raw materials in the mixing container 2 are pumped out from the lower part or the bottom of the mixing container 2, pass through the first end of the return pipe 4, the second conveying pump 20 and the second end of the return pipe 4, and then return to the mixing container 2 from the upper part or the top of the mixing container 2. The mixed liquid is pumped out from the lower part or the bottom of the mixing container 2 and then injected from the upper part or the top of the mixing container 2 through the return pipe 4 and the second conveying pump 20 connected thereto, and the second conveying pump 20 on the return pipe 4 works continuously for a certain time T, 4H≤T≤6H, which can effectively realize uniform mixing of each component in the composite phenol disinfectant, improve the dispersion effect of each raw material component in the composite phenol disinfectant, make the liquid in the mixing container 2 uniformly mixed, and finally obtain the composite phenol disinfectant. Further, in one embodiment, the bottom of the mixing container 2 is inclined around the first end, for example, it can be an inclined rotating surface, wherein the first port is at the lowest position, so that the mixed liquid can be guided to the first end under the action of the inclined surface. Further, in one preferred embodiment, referring to Figure 3, the first end and the second end are not on the same axis, the diameter of the mixing container 2 is D, the horizontal distance between the first end and the second end is L, and 1 / 4D≤L≤1 / 2D, so as to form a certain degree of local eddy current acceleration mixing, shorten the mixing time, reduce the amount of dissolved oxygen, improve the mixing efficiency, prevent the possible oxidation of crude phenol, and improve the product quality.

[0061] In one embodiment, the upper end side of the return pipe 4 comprises a nozzle portion extending into the solution in the upper part of the mixing container 2, so as to facilitate the mixed liquid to enter the mixing container again through the nozzle portion, avoid direct contact with air during mixing of the returned material, prevent oxidation of crude phenol, and improve product performance.

[0062] In one embodiment, referring to Figure 4 , the mixing device comprises a stirring device 6, and the stirring device 6 in the mixing container 2 can realize uniform mixing of the mixed liquid to shorten the mixing time. Specifically, the stirring device 6 comprises a stirring shaft 61, a stirring paddle 62, and a driving motor (not shown), the stirring device 6 drives the stirring paddle 62 to rotate through the driving motor, and the stirring paddle 62 drives the liquid to rotate and move to realize uniform mixing of the solution. By starting the motor to drive the stirring device 6 to stir the various raw materials conveyed into the mixing container 2, the mixed liquid is uniformly mixed after a certain period of continuous stirring, and then filtered and output, thereby obtaining the composite phenol disinfectant.

[0063] In one embodiment, referring to Figure 5 , the stirring paddle 62 is in the shape of a flat plate, the width of the stirring paddle 62 gradually increases and then gradually decreases in the direction away from the stirring shaft 61, like a petal shape, which reduces the stirring resistance, facilitates manufacturing, improves the working strength and stability of the stirring paddle 62, and the number of stirring paddles 62 is multiple, the stirring paddles 62 guide the solution from the central area to the peripheral wall area obliquely upward, that is, the solution forms a circulating mixing from the central area to the peripheral wall area. Further, in one embodiment, the number of stirring paddles 62 is three, the stirring paddle 62 has a width W1 and a length L1, the upper edge of the stirring paddle 62 extends upward in the horizontal direction, and the stirring paddle 62 is installed vertically upward, specifically, the stirring paddle 62 has a plane P, the angle between the projection of the plane P of the stirring paddle 62 on the stirring shaft 61 and the stirring shaft 61 is α (not shown), and 20°≤α≤55°, so as to reduce the resistance of the solution to the stirring paddle 62, while reducing the shear force of the stirring paddle 62 on the mixed liquid during rotation, and maintaining flexible mixing of the mixed liquid. Preferably, 25°≤α≤45°, which can prevent strong impact of a small amount of precipitates in the mixed liquid on the stirring paddle 62 during rotation, while well disturbing the layered mixed liquid and the precipitates, and reducing the formation of the precipitates.

[0064] Further, in one preferred embodiment, referring to Figure 5, the stirring paddle 62 is provided with an avoidance area 621 in the middle and upper area, the avoidance area 621 has a minimum width W2, the distance from the center line of the stirring shaft 61 at the minimum width of the avoidance area 621 is L2, 1 / 2L1≤L2≤2 / 3L1, and W2≥1 / 2W1, so that, under the same rotating speed, when the stirring paddle 62 rotates while ensuring the strength, the solution will form a solution accumulation area near the stirring shaft 61, and then be released at the avoidance area 621, on the one hand, effectively controlling the large splashes generated by the rotation of the stirring shaft 61, guiding the mixed solution to form a two-area disturbance, effectively preventing the solution from splashing, reducing the amount of dissolved oxygen, and reducing the oxidation of crude phenol, on the other hand, the mixed solution generates new local disturbance at the avoidance area 621 of the stirring paddle 62, so that the avoidance area 621 can better form a uniform and stable system of dodecylbenzenesulfonic acid, avoid stratification and reduce precipitation, prevent oxidation while improving mixing efficiency and product quality.

[0065] In a preferred embodiment, the first conveying pump 10 can be shared, at least two feeding pipes converge into a total feeding pipe 3, and the opening of one feeding pipe 3 and the closing of another or multiple feeding pipes 3 are controlled by a valve. The first conveying pump 10 can be configured to transmit the liquid in the total feeding pipe to the mixing container 2. Thus, the first conveying pump 10 can effectively convey the materials in each feeding pipe, reduce the complexity of the pipe arrangement, and also facilitate regular maintenance by maintenance personnel, thereby improving production efficiency. In a preferred embodiment, the first conveying pump 10 is provided with at least one movable input port, and at least one raw material can be temporarily connected to the movable input port to complete the distribution of the raw material. The movable input port can also facilitate the preparation of special function solutions, increase the use scenarios, and improve work efficiency. Further, the first conveying pump 10 is also provided with two fixed input ports, and each two feeding pipes 3 converge into a total feeding pipe 3, and the two total feeding pipes 3 are connected to the fixed input ports to complete the distribution of four raw materials. For example, glacial acetic acid and benzenesulfonic acid share one fixed input port, and water and crude phenol share one fixed input port, so that the composite phenolic disinfectant can be efficiently distributed according to the amount, reducing the complexity of the pipe arrangement and also reducing the failure rate.

[0066] In an embodiment, the feeding pipe 3 has acid and corrosion resistance, uses acid and corrosion resistant materials, or uses a double-layer pipe with an inner layer composed of acid and corrosion resistant materials. In a preferred embodiment, the feeding pipe 3 is made of 316 stainless steel, which is hygienic, environmentally friendly, and corrosion resistant, and can prolong the service life.

[0067] In a preferred embodiment, the feeding pipeline 3 has a feeding pipeline intermediate section 300, which includes a first feeding pipeline intermediate section 310, a second feeding pipeline intermediate section 320, a third feeding pipeline intermediate section 330 and a fourth feeding pipeline intermediate section 340, and is arranged underground to reduce the pipeline length, prevent environmental influences such as sun and rain, improve raw material conveying efficiency, and release more operation space on the ground to facilitate personnel operation and inspection.

[0068] In a preferred embodiment, the discharging pipeline 5 further includes a cleaning pipeline, which is used to clean the mixing container 2 in time after the composite phenolic disinfectant solution is filled, and the waste water after cleaning can be discharged from the waste water pipeline by driving of the second conveying pump 20. The waste water can be stored in a container and then uniformly treated, which not only maintains environmental protection but also improves the treatment efficiency.

[0069] The composite phenolic disinfectant and the preparation method thereof provided by the application are suitable for industrial scale production, which can enhance the penetration and stability of the composite phenolic, prevent solution stratification and reduce precipitation, improve the disinfection effect, prevent the corrosion of crude phenol to mechanical metal equipment to a certain extent, facilitate the actual disinfection operation in livestock and poultry breeding scenes, prolong the storage time, improve the strength and broad spectrum of the composite phenolic disinfectant, and has a wide range of uses.

[0070] The above embodiments are only used to illustrate the technical solutions of the application, but not limit the application; although the application is described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A compound phenol disinfectant, comprising the following components: crude phenol, dodecylbenzene sulfonic acid, acetic acid, phosphoric acid, and water; characterized in that: The crude phenol content is 40-50% by mass, the dodecylbenzenesulfonic acid content is 15-22% by mass, the acetic acid content is 22-26% by mass, the phosphoric acid content is 2-8% by mass, and the balance is water.

2. The compound phenol disinfectant according to claim 1, characterized in that: The phosphoric acid has a mass percentage of 4-6%.

3. The preparation method of the compound phenol disinfectant according to claim 1 or 2, comprising the following steps: S1. Weigh glacial acetic acid, dodecylbenzene sulfonic acid, phosphoric acid (85 W / W%), crude phenol and water according to the raw material ratio and mix them in a mixing container to obtain a mixture. S2. The mixture is mixed using a mixing device; S3, filter output, to obtain compound phenol disinfectant.

4. The method for preparing the compound phenol disinfectant according to claim 3, characterized in that: The raw materials are transported to the mixing container by the first conveying pump. The order in which the raw materials are added to the mixing container is glacial acetic acid, dodecylbenzene sulfonic acid, phosphoric acid, crude phenol and water.

5. The method for preparing the compound phenol disinfectant according to claim 4, characterized in that: The mixing device includes a return pipeline and a second conveying pump. The return pipeline is connected to the upper and lower ends of the mixing container, and the mixture in the mixing container is circulated and mixed through the return pipeline.

6. The method for preparing the compound phenol disinfectant according to claim 5, characterized in that: The return pipeline includes a first end located at the bottom of the mixing container and a second end located at the top. The bottom of the mixing container is inclined around the first end, wherein the first port is at its lowest position.

7. The method for preparing the compound phenol disinfectant according to claim 4, characterized in that: The mixing device includes a stirring device, which includes a stirring shaft, a stirring paddle, and a drive motor. The stirring device drives the stirring paddle to rotate via the drive motor.

8. The method for preparing the compound phenol disinfectant according to claim 4, characterized in that: One end of the discharge pipeline is connected to the bottom or lower part of the mixing container, and the other end is connected to the filling equipment of the compound phenol disinfectant through a filter device. The discharge pipeline is connected to the second delivery pump.

9. The method for preparing the compound phenol disinfectant according to claim 3, characterized in that: The ingredient containers and mixing containers are made of acid- and corrosion-resistant materials.

10. The method for preparing the compound phenol disinfectant according to claim 3, characterized in that: The discharge pipeline also includes a cleaning pipeline.

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