Preparation method of coal chemical phenol ammonia water oil-water separation auxiliary agent

Abstract

The invention relates to the technical field of coal chemical industry, in particular to a preparation method of a phenol ammonia water oil-water separation auxiliary agent in the coal chemical industry. The method comprises the following steps: 1, preparing raw materials; step 2, mixing and stirring; step 3, standing and curing; step 4, quality detection; and step 5, packaging and storing. According to the preparation method of the coal chemical phenol ammonia water oil-water separation auxiliary agent, the surface tension of an oil-water interface is reduced, the stability of a coal tar ammonia water emulsion is destroyed and the working efficiency of oil-water separation is improved by adjusting the proportion of each component and a preparation process, and moreover, various components, such as sodium hexadecyl benzene sulfonate and sodium stearate, have a synergistic effect, and are easy to control. The ammonia water oil-water separation auxiliary agent has the advantages that the stability of emulsion is further collapsed, the demulsification speed is increased, the stability of the ammonia water oil-water separation auxiliary agent can be kept under different environmental conditions, the separation effect is not interfered by external factors, and the ammonia water oil-water separation auxiliary agent has good compatibility with ammonia water and can play a stable and efficient role in a complex coal chemical industry production environment.

Description

Technical Field

[0001] The invention relates to the technical field of coal chemical industry, in particular to a method for preparing a phenol-ammonia-water oil-water separation auxiliary agent for coal chemical industry. Background Art

[0002] In the field of modern coal chemical production, with the continuous development of the coal chemical industry and increasingly stringent environmental protection standards, the requirements for the treatment of phenol-ammonia water have increased. However, the traditional method of separating oil and water from phenol-ammonia water has many significant defects.

[0003] Since coal chemical phenol ammonia water contains a wide variety of complex chemical components, the emulsion therein has extremely high stability, which increases the difficulty of oil-water separation. In practical applications, the separation technologies and additives used in the past cannot effectively reduce the surface tension of the oil-water interface and it is difficult to break down the stable structure of the emulsion, which directly leads to unsatisfactory oil-water separation effect and slow speed. Furthermore, the existing separation additives show the weakness of poor stability when facing different environmental conditions. Factors such as temperature changes and pH fluctuations can easily interfere with them, making the separation effect fluctuate. At the same time, the compatibility of the additives with ammonia water is unsatisfactory, which may not only trigger unnecessary chemical reactions, but also seriously reduce the processing efficiency, thereby affecting the effect and speed of oil-water separation.

[0004] In view of this, there is an urgent need for a method for preparing a coal chemical phenol-ammonia-water oil-water separation aid that can improve the oil-water separation effect and speed to improve the deficiencies of the existing technology. Summary of the invention

[0005] The object of the present invention is to provide a method for preparing a coal chemical phenol-ammonia-water oil-water separation aid to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides a method for preparing a coal chemical phenol ammonia water oil-water separation aid, comprising the following steps:

[0007] S1.1. Prepare the raw materials: sodium hexadecylbenzene sulfonate; sodium stearate; hexadecyltrimethylammonium chloride; polyoxyethylene isooctyl alcohol ether; polyvinyl alcoholamine; ethylene-vinyl acetate copolymer; 1,2-propylene glycol;

[0008] S1.2, mixing and stirring: sodium cetylbenzene sulfonate, sodium stearate, cetyltrimethylammonium chloride, isooctyl alcohol polyoxyethylene ether, polyvinyl alcoholamine, ethylene-vinyl acetate copolymer and 1,2-propylene glycol are added to the reaction container in sequence, and stirred using a stirring device;

[0009] S1.3, standing and maturing: after the stirring is completed, let the mixed liquid stand in the container to mature;

[0010] S1.4, Quality inspection: Conduct quality inspection on the prepared ammonia water oil-water separation aid;

[0011] S1.5. Packaging and storage: The qualified ammonia oil-water separation aid shall be packaged according to the packaging specifications and stored in a cool, dry and well-ventilated environment for use.

[0012] As a further improvement of the technical solution, in S1.5, the use of the ammonia water oil-water separation aid comprises the following steps:

[0013] S2.1, 1000 mg / L sample preparation: weigh 1g of ammonia oil-water separation aid mixed evenly, dissolve it in 1L of water, stir and mix well to obtain a 1000 mg / L ammonia oil-water separation aid solution;

[0014] S2.2. Water sample treatment: Add ammonia oil-water separation aid solution to the water sample and stir. After stirring, let the water sample stand for 4-12 hours, then draw a water sample from the middle of the water sample to analyze the oil content and COD in the water.

[0015] As a further improvement of the present technical solution, in S1.1, the amount of sodium hexadecylbenzene sulfonate accounts for 5-10% of the total mass; the amount of sodium stearate accounts for 5-10% of the total mass; the amount of hexadecyltrimethylammonium chloride accounts for 5-8% of the total mass; the amount of isooctyl alcohol polyoxyethylene ether accounts for 40-50% of the total mass; the amount of polyvinyl alcoholamine accounts for 5-10% of the total mass; the amount of ethylene-vinyl acetate copolymer accounts for 5-10% of the total mass; and the amount of 1,2-propylene glycol accounts for 30-40% of the total mass.

[0016] As a further improvement of the present technical solution, in S1.2, the stirring speed is 360-520 r / min.

[0017] As a further improvement of the technical solution, in S1.2, the stirring time is 40-60 min.

[0018] As a further improvement of the technical solution, in S1.3, the standing aging time is 2-3 hours.

[0019] As a further improvement of the present technical solution, in S2.2, the water sample is one of Huitianli phenol ammonia water sample, hot ring ammonia water sample, cold ring ammonia water sample and Sanandro phenol ammonia water sample.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the preparation method of the coal chemical phenol ammonia water oil-water separation aid, the surface tension of the oil-water interface is reduced by adjusting the proportion of each component and the preparation process, the stability of the coal tar ammonia water emulsion is destroyed, and the working efficiency of oil-water separation is improved. In addition, the synergistic effect of multiple components, such as sodium hexadecylbenzene sulfonate, sodium stearate, etc., further decomposes the emulsion stability and greatly accelerates the demulsification speed. Moreover, under different environmental conditions, the ammonia water oil-water separation aid can maintain stability, ensuring that the separation effect is not interfered by external factors, and it also has good compatibility with ammonia water, and can play a stable and efficient role in a complex coal chemical production environment.

[0022] 2. In the preparation method of the coal chemical phenol ammonia water oil-water separation aid, the coal chemical phenol ammonia water oil-water separation aid effectively improves the efficiency and effect of oil-water separation. Through the ratio and unique effects of each component, such as isooctyl alcohol polyoxyethylene ether forming a stable film to prevent the oil phase and the water phase from remixing, polyvinyl alcoholamine enhancing hydrophilicity and separation performance, etc., the purity of the separated oil and water is significantly improved. At the same time, the preparation process includes the steps of mixing and stirring, static aging and quality inspection, which ensures the high quality and stability of the aid. In actual applications, it improves production efficiency and reduces processing costs, thereby improving economic benefits and environmental protection value. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a flowchart of the preparation method of the coal chemical industry phenol ammonia water oil-water separation auxiliary agent. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0025] according to Figure 1 As shown, the embodiment of the present invention also provides a preparation method for preparing the above-mentioned coal chemical phenol ammonia water oil-water separation auxiliary agent, and the specific steps are as follows:

[0026] Step 1, prepare raw materials: the amount of sodium hexadecylbenzene sulfonate is 5-10% of the total mass. The sodium hexadecylbenzene sulfonate surfactant significantly reduces the surface tension of the oil-water interface, thereby destroying the stability of the coal tar ammonia water emulsion and creating favorable conditions for oil-water separation; the amount of sodium stearate is 5-10% of the total mass, which further destabilizes the stability of the emulsion and improves the oil-water separation effect; the amount of hexadecyltrimethylammonium chloride is 5-8% of the total mass, which can quickly reduce the surface tension of the oil-water interface through surface activity and charge action, neutralize the charge on the tar surface, and make the tar droplets better combined together; isooctyl alcohol polyoxyethylene The amount of vinyl ether accounts for 40-50% of the total mass. It is a nonionic surfactant that can form a stable film on the oil-water interface to prevent the remixing of the oil phase and the water phase. The amount of polyvinyl alcoholamine accounts for 5-10% of the total mass. It has high hydrophilicity and affects the oil-water interface. At the same time, polyvinyl alcohol reacts with ammonia water to form polyvinyl alcoholamine, which further enhances the hydrophilicity of the demulsifier and the oil-water separation performance. The amount of ethylene-vinyl acetate copolymer accounts for 5-10% of the total mass. It acts as a thickener to increase the viscosity of the liquid and make the separation process easier. The amount of 1,2-propylene glycol accounts for 30-40% of the total mass.

[0027] Step 2, mixing and stirring: sodium hexadecylbenzene sulfonate, sodium stearate, hexadecyltrimethylammonium chloride, isooctyl polyoxyethylene ether, polyvinyl alcoholamine, ethylene-vinyl acetate copolymer and 1,2-propylene glycol are added to the reaction container in sequence, and stirred with a stirring device at a stirring speed of 360-520 r / min and a stirring time of 40-60 min to ensure that the ingredients are fully mixed;

[0028] Step 3: Standing and aging: After stirring, let the mixed liquid stand in the container for 2-3 hours to mature, so as to enhance the interaction between the components and the performance stability;

[0029] Step 4: Quality inspection: Conduct quality inspection on the prepared ammonia-water oil-water separation additive to ensure that these indicators are highly consistent with the pre-set expected requirements. The key inspection contents include the additive's ability to reduce the surface tension of the oil-water interface, the speed and effect of demulsification, the stability under different environmental conditions, and the compatibility when mixed with ammonia water;

[0030] Step 5. Packaging and storage: After the qualified ammonia oil-water separation aid is tested, it is packaged according to the packaging specifications and stored in a cool, dry and well-ventilated environment for use.

[0031] In order to further effectively apply and evaluate the coal chemical phenol ammonia water oil-water separation aid, realize the oil-water separation of phenol ammonia water, and improve the processing efficiency and effect, therefore, in step five, the use of the ammonia water oil-water separation aid includes the following steps:

[0032] (1) 1000 mg / L sample preparation: Weigh 1 g of ammonia oil-water separation aid mixed evenly, dissolve it in 1 L of water, stir and mix to obtain a 1000 mg / L ammonia oil-water separation aid solution;

[0033] (2) Water sample treatment: Add ammonia water oil-water separation aid solution to the water sample and stir it. The water sample is one of the following: Huitianli phenol ammonia water sample, hot ring ammonia water sample, cold ring ammonia water sample and santhanopamine ammonia water sample. After stirring, let the water sample stand for 4-12 hours, then extract the water sample from the middle of the water sample and analyze the oil content and COD in the water.

[0034] In the present invention, the coal chemical phenol ammonia water oil-water separation aid prepared first can not only significantly reduce the surface tension of the oil-water interface and destroy the stability of the coal tar ammonia water emulsion, thereby creating favorable conditions for oil-water separation, but also effectively improve the efficiency and effect of oil-water separation; for example, through the synergistic effect of multiple components, the demulsification speed is accelerated, the purity of the separated oil and water is improved, and it can maintain good stability under different environmental conditions, and the compatibility with ammonia water is also guaranteed, which can adapt to the phenol ammonia water treatment needs in complex coal chemical production.

[0035] By adjusting the proportion of each component and the preparation process, the surface tension of the oil-water interface is reduced, the stability of the coal tar ammonia emulsion is destroyed, and the efficiency of oil-water separation is improved. In addition, the synergistic effect of multiple ingredients, such as sodium hexadecylbenzene sulfonate and sodium stearate, further destabilizes the emulsion and greatly accelerates the demulsification speed. Moreover, under different environmental conditions, the ammonia oil-water separation aid can maintain stability to ensure that the separation effect is not interfered by external factors. It also has good compatibility with ammonia and can play a stable and efficient role in complex coal chemical production environments.

[0036] The coal chemical phenol ammonia water oil-water separation aid effectively improves the efficiency and effect of oil-water separation. Through the ratio and unique effects of each component, such as isooctyl alcohol polyoxyethylene ether forming a stable film to prevent the oil phase and the water phase from remixing, polyvinyl alcoholamine enhancing the hydrophilicity and separation performance, etc., the purity of the separated oil and water is significantly improved. At the same time, the preparation process includes steps such as mixing, standing aging and quality inspection, which ensures the high quality and stability of the additive. In actual application, it improves production efficiency and reduces processing costs, thereby improving economic benefits and environmental value.

[0037] In order to verify that the phenol-ammonia water oil-water separation aid prepared in the embodiment of the present invention has good oil-water separation effect and speed, the coal chemical phenol-ammonia water oil-water separation aid provided by the present invention is further illustrated by the following specific embodiments based on phenol-ammonia water samples from different sources.

[0038] Example 1

[0039] The water sample of Huitianli phenol-ammonia water was used;

[0040] Experimental preparation: Take three 500mL clean beakers and add 500mL of Huitianli phenol ammonia water to each beaker;

[0041] Add reagents: the first beaker is a blank sample; the second beaker is added with 25mL of JN888 demulsifier 1000mg / L sample, and the third beaker is added with 25mL of ammonia oil-water separation aid 1000mg / L sample;

[0042] Experimental conditions: Place in a 55℃ water bath and let stand for 4h;

[0043] Detection indicators: Take a water sample from the middle of the beaker to analyze the oil content and COD. The oil content is shown in Table 1, and the COD is shown in Table 2.

[0044] Example 2

[0045] Using hot ring ammonia water sample;

[0046] Experimental preparation: Take three 500mL clean beakers and add 500mL of hot cyclopentane solution to each beaker;

[0047] Add reagents: the first beaker is a blank sample; the second beaker is added with 25mL of JN888 demulsifier 1000mg / L sample, and the third beaker is added with 25mL of ammonia oil-water separation aid 1000mg / L sample;

[0048] Experimental conditions: Place in a 55℃ water bath and let stand for 4h;

[0049] Detection indicators: Take a water sample from the middle of the beaker to analyze the oil content and COD. The oil content is shown in Table 3, and the COD is shown in Table 4.

[0050] Example 3

[0051] Use cold ring ammonia water sample;

[0052] Experimental preparation: Take three 500mL clean beakers and add 500mL of cold cyclopentane solution to each beaker;

[0053] Add reagents: the first beaker is a blank sample; the second beaker is added with 25mL of JN888 demulsifier 1000mg / L sample; the third beaker is added with 25mL of ammonia oil-water separation aid 1000mg / L sample;

[0054] Experimental conditions: Place in a 55℃ water bath and let stand for 4h;

[0055] Detection indicators: Take a water sample from the middle of the beaker to analyze the oil content and COD. The oil content is shown in Table 5, and the COD is shown in Table 6.

[0056] Example 4

[0057] Using Mahandrophenol ammonia water sample;

[0058] Experimental preparation: Take 7 500mL clean beakers and add 500mL of santhomonas ammonia water to each beaker;

[0059] Add reagents: the first beaker is a blank sample; the second beaker, when the concentration is 30 mg / L, adds 15 mL of ammonia water oil-water separation aid 1000 mg / L sample; the third beaker, when the concentration is 50 mg / L, adds 25 mL of ammonia water oil-water separation aid 1000 mg / L sample; the fourth beaker, when the concentration is 60 mg / L, adds 30 mL of ammonia water oil-water separation aid 1000 mg / L sample; the fifth beaker, when the concentration is 30 mg / L, adds 15 mL of JN888 demulsifier 1000 mg / L sample; the sixth beaker, when the concentration is 50 mg / L, adds 25 mL of JN888 demulsifier 1000 mg / L sample; the seventh beaker, when the concentration is 60 mg / L, adds 30 mL of JN888 demulsifier 1000 mg / L sample;

[0060] Experimental conditions: Place in a 50℃ water bath and let stand for 12h;

[0061] Detection indicators: Take a water sample from the middle of the beaker to analyze the oil content and COD, see Table 7.

[0062] Table 1 Example 1 Water sample oil content

[0063]

[0064]

[0065] Table 2 Example 1 Water Sample COD

[0066]

[0067] Table 3 Example 2 Water Sample Oil Content

[0068]

[0069] Table 4 Example 2 Water Sample COD

[0070]

[0071]

[0072] Table 5 Example 3 Water Sample Oil Content

[0073]

[0074] Table 6 Example 3 Water Sample COD

[0075]

[0076] Table 7 Example 4 Water sample oil content and COD

[0077]

[0078]

[0079] As shown in Tables 1-7, through experiments on phenol-ammonia water samples from different sources, it can be seen that the ammonia water oil-water separation aid has an overall better performance in reducing oil content and COD; it far exceeds the effect of using JN888 demulsifier, which shows that the ammonia water oil-water separation aid has good adaptability and treatment effect on various types of phenol-ammonia water. In different water samples, whether it is Huitianli phenol-ammonia water, hot-cyclic ammonia water, cold-cyclic ammonia water or Saint-Gobain phenol-ammonia water, the ammonia water oil-water separation aid has shown relatively stable demulsification performance; thereby improving wastewater treatment efficiency and reducing treatment costs.

[0080] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for preparing a coal chemical phenol-ammonia water oil-water separation aid, characterized in that: The following steps are involved: S1.

1. Prepare the raw materials: sodium hexadecylbenzene sulfonate; sodium stearate; hexadecyltrimethylammonium chloride; polyoxyethylene isooctyl alcohol ether; polyvinyl alcoholamine; ethylene-vinyl acetate copolymer; 1,2-propylene glycol; S1.2, mixing and stirring: sodium cetylbenzene sulfonate, sodium stearate, cetyltrimethylammonium chloride, isooctyl alcohol polyoxyethylene ether, polyvinyl alcoholamine, ethylene-vinyl acetate copolymer and 1,2-propylene glycol are added to the reaction container in sequence, and stirred using a stirring device; S1.3, standing and maturing: after the stirring is completed, let the mixed liquid stand in the container to mature; S1.4, Quality inspection: Conduct quality inspection on the prepared ammonia water oil-water separation aid; S1.

5. Packaging and storage: The qualified ammonia oil-water separation aid shall be packaged according to the packaging specifications and stored in a cool, dry and well-ventilated environment for use.

2. The method for preparing the coal chemical phenol-ammonia water oil-water separation aid according to claim 1, characterized in that: In S1.5, the use of the ammonia water oil-water separation aid comprises the following steps: S2.1, 1000 mg / L sample preparation: weigh 1g of ammonia oil-water separation aid mixed evenly, dissolve it in 1L of water, stir and mix well to obtain a 1000 mg / L ammonia oil-water separation aid solution; S2.

2. Water sample treatment: Add ammonia oil-water separation aid solution to the water sample and stir. After stirring, let the water sample stand for 4-12 hours, then draw a water sample from the middle of the water sample to analyze the oil content and COD in the water.

3. The method for preparing the coal chemical industry phenol ammonia water oil-water separation aid according to claim 1, characterized in that: In S1.1, the amount of sodium hexadecylbenzene sulfonate accounts for 5-10% of the total mass; the amount of sodium stearate accounts for 5-10% of the total mass; the amount of hexadecyltrimethylammonium chloride accounts for 5-8% of the total mass; the amount of isooctyl alcohol polyoxyethylene ether accounts for 40-50% of the total mass; the amount of polyvinyl alcoholamine accounts for 5-10% of the total mass; the amount of ethylene-vinyl acetate copolymer accounts for 5-10% of the total mass; and the amount of 1,2-propylene glycol accounts for 30-40% of the total mass.

4. The method for preparing the coal chemical phenol-ammonia-water oil-water separation aid according to claim 1, characterized in that: In S1.2, the stirring speed is 360-520 r / min.

5. The method for preparing the coal chemical phenol-ammonia water oil-water separation aid according to claim 1, characterized in that: In S1.2, the stirring time is 40-60 min.

6. The method for preparing the coal chemical phenol-ammonia-water oil-water separation aid according to claim 1, characterized in that: In S1.3, the standing and aging time is 2-3 hours.

7. The method for preparing the coal chemical phenol-ammonia-water oil-water separation aid according to claim 2, characterized in that: In S2.2, the water sample is one of Huitianli phenol ammonia water sample, hot ring ammonia water sample, cold ring ammonia water sample and santhanopram ammonia water sample.

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