Organic waste gas treatment system and waste gas purification method

Abstract

The invention belongs to the technical field of waste gas treatment, and provides an organic waste gas treatment system and a waste gas purification method. The system comprises a plurality of supporting bottom columns, and one end of each supporting bottom column is detachably installed on the ground; the air inlet group pipe comprises an air inlet curved pipe and a connecting pipe; the air inlet curved pipe is mounted at the other end of the supporting bottom column; an inlet of the air inlet curved pipe is communicated with an organic waste gas source; an outlet of the air inlet curved pipe is communicated with the connecting pipe; the treatment group pipe comprises a treatment main pipe, a spraying pipe and a liquid discharging pipe; wherein the spraying pipe is communicated with external treatment liquid, and is used for spraying the external treatment liquid into the treatment main pipe and enabling the external treatment liquid to be in contact with the organic waste gas entering the treatment main pipe. The purification method comprises the following steps: step 1, mixing a spraying solution; step 2; the invention relates to an organic waste gas treatment system and a waste gas purification method, which are used for improving the treatment efficiency of organic waste gas.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and in particular to an organic waste gas treatment system and a waste gas purification method. Background Art

[0002] There are two common methods for treating organic waste gas. The first is solid particle filtration, which uses a mesh to intercept large particles of pollutants. The second is liquid washing, which uses gas-liquid contact to transfer the phase of pollutants. By taking advantage of the hydrophobicity of organic waste gas droplets, detergents containing surfactants, alkalis and other ingredients can be added to the washing water. After the detergent is evenly mixed with tap water, it is sprayed in an atomized state through a nozzle to fully contact with the organic waste gas, which can greatly improve the efficiency of organic waste gas purification.

[0003] Therefore, in order to achieve more efficient organic waste gas treatment efficiency, we propose a treatment device that can simultaneously implement a filtration method and a liquid washing method, and a treatment method thereof. Summary of the invention

[0004] In view of the defects in the prior art, the present invention provides an organic waste gas treatment system and a waste gas purification method to improve the treatment efficiency of organic waste gas.

[0005] In the first aspect, the present invention provides an organic waste gas treatment system, comprising: a supporting base column, the supporting base column is provided with multiple locations, and one end of the supporting base column can be detachably mounted on the ground; an air inlet pipe group, the air inlet pipe group includes an air inlet curved pipe and a connecting pipe; the air inlet curved pipe is installed on the other end of the supporting base column; the inlet curved pipe is communicated with an organic waste gas source at its inlet; the outlet of the air inlet curved pipe is communicated with the connecting pipe; a treatment pipe group, the treatment pipe group includes a treatment main pipe, a spray pipe and a drain pipe; one end of the treatment main pipe is communicated with the connecting pipe; the spray pipe is provided above the treatment main pipe and communicated with the treatment main pipe; the drain pipe is provided at the bottom of the treatment main pipe; a filter assembly, the filter assembly is installed at the air inlet pipe group and is used to treat organic waste gas; wherein the spray pipe is communicated with an external treatment liquid and is used to spray the external treatment liquid into the treatment main pipe and contact the organic waste gas entering the treatment main pipe.

[0006] Furthermore, the air inlet curved duct is provided with a mounting hole; the filter assembly is mounted at the mounting hole; the filter assembly includes a filter motor and an impeller; the filter motor is mounted outside the mounting hole, and the rotating shaft of the filter motor extends into the air inlet curved duct, and is detachably connected to the impeller, and drives the impeller to rotate.

[0007] Furthermore, the filter assembly also includes a guide cover, which is detachably installed in the air inlet curved pipe and covers the impeller.

[0008] Furthermore, the filter assembly also includes a collecting valve, and the air inlet curved pipe is also provided with a discharge cavity hole, and the discharge cavity hole is arranged below the mounting hole and close to the guide cover; the collecting valve is detachably mounted at the discharge cavity hole.

[0009] Furthermore, the air deflector is provided with a mounting groove.

[0010] Furthermore, the discharge cavity hole is conical.

[0011] Furthermore, the treatment group pipe also includes at least one spray shower head, and the treatment main pipe is also provided with a mounting top hole; the mounting top holes are provided in multiple locations and are evenly distributed on the treatment main pipe along the axial direction; the spray shower head is installed on the mounting top hole.

[0012] Furthermore, the spray pipe is provided with a plurality of spray branch pipes; the number of the spray branch pipes is the same as the number of the spray shower heads, and the spray branch pipes are communicated with the spray shower heads.

[0013] Furthermore, the processing main pipe is also provided with an outlet; the outlet is in an upward shape.

[0014] It can be seen from the above technical solution that the beneficial effects of the organic waste gas treatment system provided by the present invention are:

[0015] (1) In actual use, the support of the entire device is effectively achieved through the support base column; and the organic waste gas is communicated through the air inlet group pipe; at the same time, the air inlet curved pipe design in the air inlet group pipe effectively achieves the effect of pressurizing the curved pipe airflow;

[0016] (2) The overall filtration efficiency is effectively improved by washing and filtering with liquid through a spray pipe and filtering solid particles through a filter assembly.

[0017] In a second aspect, the present invention provides a method for purifying exhaust gas, comprising the following steps:

[0018] Step 1: Mixing a spray solution, mixing 5-10 parts by mass of sodium dodecylbenzene sulfonate, 2-8 parts by mass of nonylphenol polyoxyethylene ether, 1-5 parts by mass of isopropanol, 1-5 parts by mass of triethanolamine, 1-5 parts by mass of sodium silicate, 1-5 parts by mass of citric acid, 2-4 parts by mass of polyether modified silicone oil, and 40-50 parts by mass of water to form a mixed solution to be sprayed, and entering the installation main pipe through the spray pipe;

[0019] Step 2: Mix and install the filtered solid: 5-10 parts by mass of the modified kapok fiber and 1-3 parts by mass of nano-alumina are mixed into a solid and installed in the installation groove of the guide cover.

[0020] Among them, the mass ratio of modified kapok fiber and nano-alumina is 3:7.5:2;

[0021] The modified kapok fiber is obtained by treating the kapok fiber with 20% hydrogen peroxide for 30-60 minutes;

[0022] The kapok fibers are chopped kapok fibers with a length of less than 5 mm;

[0023] The average particle size of the nano-alumina is 20 nm;

[0024] The viscosity of the polyether modified silicone oil at 25° C. is 20-45 mPa.s; the surface tension of the exhaust gas purifier is 26 dynes / cm.

[0025] It can be seen from the above technical solution that the beneficial effects of the exhaust gas purification method provided by the present invention are:

[0026] (1) Modified kapok fiber is a hollow plant fiber with good oil absorption effect. Through modification, its surface has rich polar groups, which can interact with polyether modified silicone oil to improve its stability in the solution system and form a stable suspension. It can also act as an adsorption core to adsorb charged small oil droplets and gather them around itself, so that the oil droplets do not float on the water surface, thereby increasing the maximum oil adsorption capacity. At the same time, after absorbing enough oil droplets, it can settle to the bottom of the water.

[0027] (2) Polyether modified silicone oil is a soluble polymer molecule with dual hydrophilic and lipophilic active groups. Its molecular chain can interact with modified kapok fibers and nano-alumina particles to prevent their aggregation and sedimentation. At the same time, it has its own lipophilicity, which further aggregates oil droplets around the solid phase of modified kapok fibers and nano-alumina particles, thereby increasing the maximum oil adsorption capacity and adsorption rate.

[0028] (3) Nano-alumina has abundant hydrogen bonds, which form bridge bonds between polymer molecular chains, turning a part of the molecular chains into a three-dimensional structure, thereby increasing the ability to adsorb oil droplets. At the same time, its rich surface charge capacity can adsorb oil on its surface, thereby increasing the maximum oil adsorption capacity. After adsorbing the oil droplets, the charge is neutralized, so it can be easily aggregated, thereby achieving the goal of sinking the oil droplets to the bottom of the water.

[0029] (4) In the present invention, the oil droplets are adsorbed by the suspension system and then aggregated and settled to the bottom of the water, so that it is convenient to add modified kapok fiber, nano-alumina, and polyether modified silicone oil again after filtration for secondary use.

[0030] (5) In the present invention, the surface tension of the waste gas purifier is controlled within the range of 18-32 dynes / cm by adding various surfactants such as sodium dodecylbenzene sulfonate and nonylphenol polyoxyethylene ether, which can effectively improve the smoothness of gas passing through water, stabilize the suspension system, and increase the adsorption amount of the particle / emulsion composite phase. Adding too much surfactant will lead to insufficient absorption and insufficient sedimentation of oil droplets from the water body. Adding too little surfactant will lead to unstable solid phase suspension in water. In the present invention, polyether-modified silicone oil, modified kapok fiber, and nano-alumina play a synergistic role in the process of preparing the waste gas purification method, and synergistically improve the maximum oil adsorption amount and adsorption rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present invention, the following will briefly introduce the drawings required for the specific embodiments or the prior art description. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0032] Figure 1 A three-dimensional schematic diagram of an organic waste gas treatment system provided by an embodiment of the present invention;

[0033] Figure 2 A three-dimensional schematic diagram of another perspective of an organic waste gas treatment system provided by an embodiment of the present invention;

[0034] Figure 3 A schematic diagram of the structure of an organic waste gas treatment system provided by an embodiment of the present invention;

[0035] Figure 4 A partial schematic diagram of a filter assembly at an air inlet curved pipe in an organic waste gas treatment system provided by an embodiment of the present invention;

[0036] Figure 5 It is a schematic diagram of the three-dimensional installation structure of the filter motor, impeller and guide cover in the filter assembly of the present invention;

[0037] Figure 6 It is a schematic diagram of the internal installation structure of the filter motor, impeller and guide cover in the filter assembly of the present invention;

[0038] Figure 7 It is a working schematic diagram of a waste gas purification method in the present invention.

[0039] Reference numerals:

[0040] Support base column 1, air inlet group pipe 2, air inlet curved pipe 21, mounting hole 211, discharge cavity hole 212, connecting pipe 22, treatment group pipe 3, treatment main pipe 31, mounting top hole 311, outlet 312, spray pipe 32, spray branch pipe 321, drain pipe 33, spray shower head 34, filter assembly 4, filter motor 41, impeller 42, guide cover 43, mounting groove 431, and collecting valve 44.

[0041] Step 1, mixing the spray solution;

[0042] Step 2: Mix and install the filtered solids. DETAILED DESCRIPTION

[0043] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0044] The embodiment is basically as shown in the attached Figures 1 to 7 As shown:

[0045] like Figure 1 - Figure 7 As shown, an organic waste gas treatment system and a waste gas purification method provided in this embodiment can improve the treatment efficiency of organic waste gas.

[0046] In the first aspect, the present invention provides an organic waste gas treatment system, comprising: a supporting base column 1, the supporting base column 1 is provided with multiple positions, and one end of the supporting base column 1 can be detachably mounted on the ground; an air intake group pipe 2, the air intake group pipe 2 includes an air intake curved pipe 21 and a connecting pipe 22; the air intake curved pipe 21 is installed on the other end of the supporting base column 1; the inlet of the air intake curved pipe 21 is connected to the organic waste gas source; the outlet 312 of the air intake curved pipe 21 is connected to the connecting pipe 22; a treatment group pipe 3, the treatment group pipe 3 includes a treatment main pipe 31, a spray pipe 32 and drain pipe 33; one end of the treatment main pipe 31 is communicated with the connecting pipe 22; the spray pipe 32 is arranged above the treatment main pipe 31 and communicated with the treatment main pipe 31; the drain pipe 33 is arranged at the bottom of the treatment main pipe 31; the filter assembly 4, the filter assembly 4 is installed at the air inlet pipe group 2, and is used to treat organic waste gas; wherein the spray pipe 32 is communicated with the external treatment liquid, and is used to spray the external treatment liquid into the treatment main pipe 31, and contact with the organic waste gas entering the treatment main pipe 31. In actual use, the support of the overall device is effectively achieved through the supporting base column 1; and the organic waste gas is communicated through the air inlet pipe group 2; at the same time, the design of the air inlet curved pipe 21 in the air inlet pipe group 2 is adopted, which effectively achieves the effect of pressurizing the curved pipe airflow; and the solid particle filtration method is carried out through the liquid washing filtration through the spray pipe 32 and then through the filter assembly 4, which effectively improves the overall filtration efficiency.

[0047] In this embodiment, the air inlet curved duct 21 is provided with a mounting hole 211; the filter assembly 4 is installed at the mounting hole 211; the filter assembly 4 includes a filter motor 41 and an impeller 42; the filter motor 41 is installed outside the mounting hole 211, and the rotating shaft of the filter motor 41 extends into the air inlet curved duct 21, and is detachably connected to the impeller 42, and drives the impeller 42 to rotate.

[0048] In this embodiment, the filter assembly 4 further includes a guide cover 43 , which is detachably installed in the air inlet curved pipe 21 and covers the impeller 42 .

[0049] In this embodiment, the filter assembly 4 also includes a collecting valve 44, and the air inlet curved pipe 21 is also provided with a discharge cavity hole 212, and the discharge cavity hole 212 is arranged below the mounting hole 211 and close to the guide cover 43; the collecting valve 44 is detachably installed at the discharge cavity hole 212.

[0050] In this embodiment, the air guide cover 43 is provided with a mounting groove 431 .

[0051] In this embodiment, the discharge cavity hole 212 is conical.

[0052] In this embodiment, the processing group pipe 3 also includes at least one spray head 34, and the processing main pipe 31 is also provided with a mounting top hole 311; the mounting top holes 311 are provided in multiple locations and are evenly distributed on the processing main pipe 31 along the axial direction; the spray head 34 is installed on the mounting top hole 311.

[0053] In this embodiment, the spray pipe 32 is provided with a plurality of spray branch pipes 321 ; the number of the spray branch pipes 321 is the same as the number of the spray shower heads 34 , and the spray branch pipes 321 are communicated with the spray shower heads 34 .

[0054] In this embodiment, the processing main pipe 31 is further provided with an outlet 312; the outlet 312 is in an upward shape.

[0055] In a second aspect, the present invention provides a method for purifying exhaust gas, comprising the following steps:

[0056] Step 1: Mixing a spray solution, 5-10 parts by mass of sodium dodecylbenzene sulfonate, 2-8 parts by mass of nonylphenol polyoxyethylene ether, 1-5 parts by mass of isopropanol, 1-5 parts by mass of triethanolamine, 1-5 parts by mass of sodium silicate, 1-5 parts by mass of citric acid, 2-4 parts by mass of polyether modified silicone oil, and 40-50 parts by mass of water to form a mixed solution to be sprayed, and the mixed solution enters the installation main pipe through the spray pipe 32;

[0057] Step 2: Mix and install the filtered solid: Then 5-10 parts by mass of the modified kapok fiber and 1-3 parts by mass of nano-alumina are mixed into a solid and installed in the installation groove 431 of the guide cover 43.

[0058] Among them, the mass ratio of modified kapok fiber and nano-alumina is 3:7.5:2;

[0059] The modified kapok fiber is obtained by treating the kapok fiber with 20% hydrogen peroxide for 30-60 minutes;

[0060] The kapok fibers are chopped kapok fibers with a length of less than 5 mm;

[0061] The average particle size of the nano-alumina is 20 nm;

[0062] The viscosity of the polyether-modified silicone oil at 25°C is 20-45mPa.s; the surface tension of the exhaust gas purifier is 26 dynes / cm. In actual use, the modified kapok fiber is a hollow plant fiber with good oil absorption effect. Through modification, its surface has abundant polar groups, which can interact with the polyether-modified silicone oil, improve its stability in the solution system, form a stable suspension, and act as an adsorption core to adsorb charged small oil droplets, gather them around itself, so that the oil droplets do not float on the water surface, thereby increasing the maximum oil adsorption capacity. At the same time, after adsorbing enough oil droplets, it can settle to the bottom of the water. The polyether-modified silicone oil is a soluble polymer molecule with hydrophilic and lipophilic dual active groups. Its molecular chain can interact with the modified kapok fiber and nano-alumina particles to prevent their aggregation and sedimentation. At the same time, it has lipophilicity itself, further gathering the oil droplets around the solid phase of the modified kapok fiber and nano-alumina particles, thereby increasing the maximum oil adsorption capacity and adsorption rate. Nano-alumina has abundant hydrogen bonds, which form bridge bonds between polymer molecular chains, so that part of the molecular chains become three-dimensional structures, increasing the ability to adsorb oil droplets. At the same time, its surface has abundant electrical charge, which can adsorb oil on its surface, thereby increasing the maximum oil adsorption capacity. After the oil droplets are adsorbed, they can be easily aggregated due to charge neutralization, so that the oil droplets can be precipitated to the bottom of the water. In the present invention, the oil droplets are adsorbed by the suspension system, and then agglomerated and precipitated to the bottom of the water, so that it is convenient to filter and then add modified kapok fiber, nano-alumina, and polyether modified silicone oil for secondary use. In the present invention, the surface tension of the exhaust gas purifier is controlled within the range of 18-32 dynes / cm by adding multiple surfactants such as sodium dodecylbenzene sulfonate and nonylphenol polyoxyethylene ether, which can effectively improve the smoothness of gas passing through water, and make the suspension system stable, and the adsorption amount of the particle / emulsion composite phase is increased. Too much addition of surfactant will lead to insufficient absorption, and the oil droplets cannot be fully precipitated from the water body. Too little addition of surfactant will lead to unstable solid phase suspension in water. In the present invention, the polyether modified silicone oil, modified kapok fiber and nano-alumina play a synergistic role in the process of preparing the waste gas purification method, and synergistically improve the maximum oil adsorption amount and adsorption rate.

[0063] In summary, this organic waste gas treatment system and waste gas purification method can improve the treatment efficiency of organic waste gas; it is not only reasonably designed but also easy to operate, and can simultaneously realize the solid particle filtration method and liquid washing method of the treatment device; therefore, it is suitable for industry promotion.

[0064] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. An organic waste gas treatment system, characterized in that: include: A supporting base column, wherein the supporting base column is provided in multiple locations and one end of the supporting base column can be detachably mounted on the ground; An air intake pipe group, the air intake pipe group includes an air intake curved pipe and a connecting pipe; the air intake curved pipe is installed on the other end of the supporting base column; the inlet of the air intake curved pipe is communicated with the organic waste gas source; the outlet of the air intake curved pipe is communicated with the connecting pipe; A treatment pipe group, the treatment pipe group includes a treatment main pipe, a spray pipe and a drain pipe; one end of the treatment main pipe is communicated with the connecting pipe; the spray pipe is arranged above the treatment main pipe and communicated with the treatment main pipe; the drain pipe is arranged at the bottom of the treatment main pipe; A filter assembly, which is installed at the air inlet pipe and is used to treat organic waste gas; The spray pipe is in communication with the external treatment liquid and is used to spray the external treatment liquid into the main treatment pipe and contact the organic waste gas entering the main treatment pipe.

2. The organic waste gas treatment system according to claim 1, characterized in that: The air inlet curved pipe is provided with a mounting hole; the filter assembly is mounted at the mounting hole; the filter assembly comprises a filter motor and an impeller; the filter motor is mounted outside the mounting hole, and the rotating shaft of the filter motor extends into the air inlet curved pipe and is detachably connected to the impeller to drive the impeller to rotate.

3. The organic waste gas treatment system according to claim 2, characterized in that: The filter assembly also includes a guide cover, which is detachably installed in the air inlet curved pipe and covers the impeller.

4. The organic waste gas treatment system according to claim 3, characterized in that: The filter assembly also includes a collecting valve. The air inlet curved pipe is also provided with a discharge cavity hole, which is arranged below the mounting hole and close to the guide cover. The collecting valve is detachably mounted at the discharge cavity hole.

5. The organic waste gas treatment system according to claim 4, characterized in that: The air guide cover is provided with a mounting groove.

6. The organic waste gas treatment system according to claim 4, characterized in that: The discharge cavity hole is conical.

7. The organic waste gas treatment system according to claim 1, characterized in that: The treatment pipe group also includes at least one spray head, and the treatment main pipe is also provided with a mounting top hole; the mounting top holes are provided in multiple locations and are evenly distributed on the treatment main pipe along the axial direction; the spray head is installed on the mounting top hole.

8. The organic waste gas treatment system according to claim 7, characterized in that: The spray pipe is provided with a plurality of spray branch pipes; the number of the spray branch pipes is the same as the number of the spray shower heads, and the spray branch pipes are communicated with the spray shower heads.

9. The organic waste gas treatment system according to claim 1, characterized in that: The processing main pipe is also provided with an outlet; the outlet is in an upward shape.

10. A method for purifying waste gas, characterized in that: The steps include: Step 1: Mixing a spray solution, mixing 5-10 parts by mass of sodium dodecylbenzene sulfonate, 2-8 parts by mass of nonylphenol polyoxyethylene ether, 1-5 parts by mass of isopropanol, 1-5 parts by mass of triethanolamine, 1-5 parts by mass of sodium silicate, 1-5 parts by mass of citric acid, 2-4 parts by mass of polyether modified silicone oil, and 40-50 parts by mass of water to form a mixed solution to be sprayed, and entering the installation main pipe through the spray pipe; Step 2: Mix and install the filtered solid: 5-10 parts by mass of the modified kapok fiber and 1-3 parts by mass of nano-alumina are mixed into a solid and installed in the installation groove of the guide cover. Among them, the mass ratio of modified kapok fiber and nano-alumina is 3:7.5:2; The modified kapok fiber is obtained by treating the kapok fiber with 20% hydrogen peroxide for 30-60 minutes; The kapok fibers are chopped kapok fibers with a length of less than 5 mm; The average particle size of the nano-alumina is 20 nm; The viscosity of the polyether modified silicone oil at 25° C. is 20-45 mPa.s; the surface tension of the exhaust gas purifier is 26 dynes / cm.

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