CN110756006A - Quenching absorption tower for treating waste gas generated by recycling hazardous waste inorganic salt - Google Patents

Quenching absorption tower for treating waste gas generated by recycling hazardous waste inorganic salt Download PDF

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CN110756006A
CN110756006A CN201911075921.3A CN201911075921A CN110756006A CN 110756006 A CN110756006 A CN 110756006A CN 201911075921 A CN201911075921 A CN 201911075921A CN 110756006 A CN110756006 A CN 110756006A
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quenching
temperature
flue gas
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inorganic salt
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CN110756006B (en
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陈红利
苏文佳
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Inner Mongolia Zhongtai Huijin Environmental Protection Technology Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1493Selection of liquid materials for use as absorbents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2252/00Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/10Inorganic absorbents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases
    • B01D2258/0291Flue gases from waste incineration plants

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Abstract

The invention relates to the field of environmental protection treatment, in particular to a quenching absorption tower for treating waste gas generated by recycling hazardous waste inorganic salt, which is characterized by comprising main components, a quenching tower body, a quenching liquid spray gun and a flue gas inlet and outlet, wherein the quenching tower body is provided with a quenching tower inlet and a quenching tower outlet; the invention adopts the mode of directly cooling the calcium hydroxide spraying emulsion, so that the flue gas flowing through the tower can directly contact the sprayed liquid after atomization, the mass transfer speed and the heat transfer speed are very high, the sprayed liquid is quickly vaporized to take away a large amount of heat, and the temperature of the flue gas can be quickly reduced to about 200 ℃, thereby avoiding the regeneration of dioxin substances; and meanwhile, the acidic components in the smoke can be neutralized. Meanwhile, an anticorrosive high-temperature-resistant refractory material is used as a contact surface between the inside of the quench tower body and flue gas, so that the alkali liquor can be prevented from being adhered to the wall and equipment corrosion can be prevented, and the service life of the equipment is prolonged.

Description

Quenching absorption tower for treating waste gas generated by recycling hazardous waste inorganic salt
Technical Field
The invention relates to the field of environmental protection treatment, in particular to a quenching absorption tower for treating waste gas generated by recycling hazardous waste inorganic salt.
Background
After hazardous waste carries out incineration disposal, can produce a large amount of high temperature flue gas, the quench tower is used for carrying out rapid cooling to the high temperature flue gas, avoids the direct atmosphere of discharging into of high temperature flue gas, causes secondary pollution to the atmosphere.
Sugarcane is one of the main raw materials for sugar production. About 50% of the fiber of the bagasse, which remains after sugar pressing, can be used for paper making. The bagasse fibers are about 0.65-2.17 mm in length and 21-28 μm in width. Although the fiber form is inferior to wood and bamboo, the fiber form is better than rice and wheat straw fiber. The pulp can be mixed with part of wood pulp to make offset printing paper, cement bag paper, etc. The bagasse mainly comprises cellulose (35-45%), lignin (18-20%) and hemicellulose (20-35%), the microstructure of the bagasse takes cellulose crystalline microfibril as a framework, the lignin and the hemicellulose are used as a filler and a connecting agent among the crystalline microfibrils, the cellulose crystalline microfibril is a molecular chain formed by arranging about 30-100 cellulose molecules side by side, and hydrogen bonds exist in each cellulose molecule or among the cellulose molecules, and the structural formula is as follows.
Figure 871670DEST_PATH_IMAGE001
The principle of the piezoelectric effect is that if a pressure is applied to a piezoelectric material, it generates a potential difference (called a positive piezoelectric effect), whereas if a voltage is applied, a mechanical stress (called an inverse piezoelectric effect) is generated. If the pressure is a high frequency vibration, a high frequency current is generated. When high-frequency electric signals are applied to the piezoelectric ceramic, high-frequency acoustic signals (mechanical vibration) are generated, which are commonly known as ultrasonic signals, the piezoelectric material can generate an electric field due to mechanical deformation and can also generate mechanical deformation due to the action of the electric field, and the inherent electromechanical coupling effect enables the piezoelectric material to be widely applied to engineering.
CN205229846U discloses a system for controlling the pH of a quench tower, comprising: a quench tower configured to supply a quench tower effluent to a quench tower aftercooler, the quench tower aftercooler configured to provide a condensate; a pH sensor for monitoring the pH of condensate from the quench tower aftercooler; and a controller electrically connected to the pH sensor and the acid control valve, the acid control valve configured to control acid flow to the quench tower; wherein the controller is configured to increase or decrease the acid flow through the acid control valve.
CN203099873U discloses a quench tower apparatus. It includes a set of quench tower, quench section water jacket and stand pipe. Quench tower divide into quench zone and reaction section, and the quench zone adopts water jacket structure, and atomizer sets up in flue gas import department, is provided with the stand pipe in the middle of the quench tower, makes spiral downstream in the quench tower, and quench tower adopts carbon steel inside lining anticorrosive paint. The utility model discloses a guaranteed that the flue gas temperature reduces to 200 ℃ from 500 ℃ in one second, prevented the regeneration of dioxin, reduced equipment investment cost simultaneously.
CN206875444U a dangerous waste incineration system's quench tower, including quench tower body and flue gas cooling device, quench tower body below is fixed with the base, quench tower body bottom is equipped with the delivery port, quench tower body one side is equipped with the flue gas entry, the flue gas pipe sets up at quench tower body internally, the upper end of flue gas pipe links to each other with the flue gas entry, the lower extreme setting of flue gas pipe is in quench tower body bottom, the flue gas pipe links to each other with quench tower body inside through first support frame and second support frame, first support frame is located the second support frame top, quench tower body opposite side is equipped with the mouth that draws water, the suction pipe sets up at quench tower body internally, the upper end of suction pipe links to each other with the mouth that draws water, the lower extreme setting of suction pipe is in quench tower body bottom, it links to link to each other with quench tower body inside through the third support on the suction pipe, the water inlet of; the flue gas cooling device comprises a magnetic suspension liquid level meter, a temperature sensor, a DCS system, a quench pump and a water pump.
Because the inorganic salt dangers the useless composition, the source is complicated, and the produced waste gas of calcination method contains multiple acid gas such as hydrogen chloride, sulfur dioxide, and the condition that the acid-base liquid is stained with wall two and appears corroding very easily takes place in the quench tower, simultaneously, because equipment vibrations cause the noise, influences environmental safety.
Disclosure of Invention
In order to solve the problems, the invention provides a quenching absorption tower for treating waste gas generated by resource utilization of hazardous waste inorganic salt.
A rapid cooling absorption tower for treating waste gas generated by resource utilization of hazardous waste inorganic salt is characterized in that main components comprise a rapid cooling tower body, a rapid cooling liquid spray gun and a flue gas inlet and outlet; the quenching tower body comprises a cylindrical section and a conical section, the cylindrical section is arranged at the lower part, and the conical section is arranged at the upper part; the quenching tower body is of a double-layer structure, and the contact surface of the quenching tower body and the flue gas is made of an anticorrosive high-temperature-resistant refractory material; the spray head of the quenching liquid spray gun forms an included angle of 20 degrees with the axis of the quenching tower body, and the atomization of the absorbent slurry is completed by compressed air; the smoke inlet is arranged at the bottom of the cylindrical section and is provided with a temperature detector for monitoring the temperature of the smoke inlet, the smoke outlet is arranged at the top of the conical section, the outlet is provided with a piezoelectric noise removal coating for converting noise into current to be led out, and the temperature detector is arranged for monitoring the temperature of the smoke outlet.
The quenching liquid spray gun is of a double-layer jacket pipe structure, absorbent slurry flows through the inner pipe, compressed air flows through the outer pipe, and the slurry and the compressed air are strongly mixed at the nozzle head and then are sprayed out from the nozzle, so that the slurry is atomized into fine particles and is contacted with flue gas for absorption.
And a titanium steel composite plate is adopted outside the quenching tower.
The absorbent slurry adopts 5 to 15 percent of calcium hydroxide emulsion.
The anticorrosive high-temperature-resistant refractory material consists of a modified polyether sulfone resin layer and a refractory fiber layer, and the preparation method comprises the following steps:
adding 120-180 parts of polyethersulfone resin, 40-80 parts of polyarylsulfone, 30-40 parts of glass fiber, 0.1-0.5 part of 2, 6-tertiary butyl-4-methylphenol, 0.1-0.5 part of di (2-ethylhexyl) phthalate, 0.2-0.8 part of polyvinyl butyral and 0.05-0.4 part of dioctyltin into a torque rheometer mixing roll according to the mass parts, carrying out melt mixing at 290-350 ℃, and then carrying out extrusion granulation and injection molding by using a double-screw extruder according to an extrusion process to obtain a modified polyethersulfone resin layer with the thickness of 60-100 mm; then a refractory fiber layer with the thickness of 5-20mm is bonded on the surface of the modified polyether sulfone resin layer by a cerium-based binder, and the refractory fiber layer is dried at the temperature of 100-150 ℃ for 6-10h under the pressure of 3-10MPa and then heated to the temperature of 180-210 ℃ for heat treatment for 3-8h, thus obtaining the anticorrosive high-temperature-resistant refractory material.
The cerium-based binder is prepared according to the following scheme:
according to the mass portion, 20-40 portions of nano zirconia and 0.1-0.5 portion of 2-thio dodecanoic acid-1-methyl ester sodium are added into 40-60 portions of water, the water is sheared and stirred at a high speed of 800 plus 2000r/min for 30-40min, then 12-19 portions of cerium molybdate and 5-12 portions of nano potassium tripolyphosphate are added, the materials are transferred into a hovering vortex kettle, and the vortex is suspended for 5-10h, so that the cerium-based binder is obtained.
The piezoelectric noise-removing coating is prepared according to the following scheme:
according to the mass portion, 10-20 portions of montmorillonite and 5-15 portions of piezoelectric quartz powder are added into 500 portions of 200-plus distilled water to be stirred and mixed evenly, then 0.5-1.0 portion of sodium chloride and 0.1-0.8 portion of tetramethylammonium bromide, 0.1-1 portion of thiadiazole composite lanthanum borate and 0.01-1 portion of 2-diphenyl magnesium bromide are added into a reaction kettle to be stirred and reacted for 3-7h under the temperature controlled to be 90-105 ℃, then 1-5 portions of cerium-based binder and 5-10 portions of bagasse powder are added to be stirred and reacted for 1-5h under the temperature of 150-plus 180 ℃, filtered and then dried under the temperature of 80-100 ℃, and then put into a silicon oil tank to be polarized, the polarization electric field intensity is 2-3.5kV/mm, the polarization temperature is 130-plus 142 ℃, the polarization time is 10-60min, and filtering, and coating on the inner wall of the flue gas outlet to obtain the piezoelectric noise-removing coating.
According to the quenching absorption tower for treating the waste gas generated by recycling the hazardous waste inorganic salt, the calcium hydroxide emulsion spraying and direct cooling mode is adopted, so that the flue gas flowing through the tower can be directly contacted with the sprayed liquid after atomization, the mass transfer speed and the heat transfer speed are very high, the sprayed liquid is quickly vaporized to take away a large amount of heat, the temperature of the flue gas is quickly reduced to about 200 ℃, and the regeneration of dioxin-like substances is avoided; and meanwhile, the acidic components in the smoke can be neutralized. Meanwhile, an anticorrosive high-temperature-resistant refractory material is used as a contact surface between the inside of the quench tower body and flue gas, so that the alkali liquor can be prevented from being adhered to the wall and equipment corrosion can be prevented, and the service life of the equipment is prolonged.
The piezoelectric quartz is brittle and hard and is not extrusion-resistant, a cerium-based binder and bagasse powder are used to generate a piezoelectric noise removal coating, the piezoelectric noise removal coating prepared by the method has a fiber network microstructure and deformation resistance, the piezoelectric performance is improved by adding thiadiazole composite lanthanum borate and 2-diphenyl magnesium bromide, the piezoelectric noise removal coating can convert vibration and noise into electric energy and lead the electric energy out of equipment, noise pollution is reduced, and environmental protection is facilitated.
Drawings
FIG. 1 is a Fourier infrared spectrum of a sample of the corrosion and temperature resistant refractory prepared in example 3.
As can be seen from FIG. 1, 1607 and 1498cm-1An absorption peak of 1245cm is present near the benzene ring-1An absorption peak of ether exists nearby, which indicates that the polyether sulfone resin and polyarylsulfone participate in the reaction; 925cm-1An absorption peak of silicate ions exists nearby, which indicates that refractory fiber-aluminum silicate participates in the reaction; 1065 and 756cm-1The absorption peak of silica exists nearby, which indicates that the glass fiber participates in the reaction; 1735cm-1The carbonyl absorption peak of carboxyl exists nearby, 688cm-1An absorption peak of carbon chloride exists nearby, which indicates that the polyvinyl butyral participates in the reaction; 3295cm-1An absorption peak of the phenolic hydroxyl group exists in the vicinity.
Detailed Description
The invention is further illustrated by the following specific examples:
the impact strength of the sample prepared in this experiment was tested (touch screen type simply supported beam impact tester, model TCJ-4, jen huaxing experimental equipment limited): the impact strength of the cured resin is tested by referring to GB/T2567-2008, a test sample has no notch, and the influence of different components on the toughness of the material is analyzed. The heat resistance adopts the GB1735 standard and is 100 hours at 250 ℃; the acid resistance and the alkali resistance are tested by the GB1736 standard, and are treated for 30 days by 60 percent of sulfuric acid and 40 percent of sodium hydroxide.
According to national standard of the people's republic of China (GBJ 122-88), noise measurement specification of industrial enterprises and noise detection.
Example 1
A rapid cooling absorption tower for treating waste gas generated by resource utilization of hazardous waste inorganic salt is characterized in that main components comprise a rapid cooling tower body, a rapid cooling liquid spray gun and a flue gas inlet and outlet; the quenching tower body comprises a cylindrical section and a conical section, the cylindrical section is arranged at the lower part, and the conical section is arranged at the upper part; the quenching tower body is of a double-layer structure, and the contact surface of the quenching tower body and the flue gas is made of an anticorrosive high-temperature-resistant refractory material; the spray head of the quenching liquid spray gun forms an included angle of 20 degrees with the axis of the quenching tower body, and the atomization of the absorbent slurry is completed by compressed air; the flue gas inlet is arranged at the bottom of the cylindrical section and is provided with a temperature detector for monitoring the temperature of the flue gas inlet, and the flue gas outlet is arranged at the top of the conical section and is provided with a temperature detector for monitoring the temperature of the flue gas outlet.
The quenching liquid spray gun is of a double-layer jacket pipe structure, absorbent slurry flows through the inner pipe, compressed air flows through the outer pipe, and the slurry and the compressed air are strongly mixed at the nozzle head and then are sprayed out from the nozzle, so that the slurry is atomized into fine particles and is contacted with flue gas for absorption.
And a titanium steel composite plate is adopted outside the quenching tower.
The absorbent slurry adopts 5 percent calcium hydroxide emulsion.
The anticorrosive high-temperature-resistant refractory material consists of a modified polyether sulfone resin layer and a refractory fiber layer, and the preparation method comprises the following steps:
adding 120 parts of polyether sulfone resin, 40 parts of polyarylsulfone, 30 parts of glass fiber, 0.1 part of 2, 6-tertiary butyl-4-methylphenol, 0.1 part of di (2-ethylhexyl) phthalate, 0.2 part of polyvinyl butyral and 0.05 part of dioctyltin into a torque rheometer mixing roll according to the mass parts, carrying out melt mixing at 290 ℃, and then carrying out extrusion granulation and injection molding by using a double-screw extruder according to an extrusion process to obtain a modified polyether sulfone resin layer with the thickness of 60 mm; then, a refractory fiber layer with the thickness of 5mm is bonded on the surface of the modified polyether sulfone resin layer by a cerium-based binder, and the refractory fiber layer is dried at 100 ℃ for 6 hours under the pressure of 3MPa and then heated to 180 ℃ for heat treatment for 3 hours, thus obtaining the anticorrosive high-temperature-resistant refractory material.
The cerium-based binder is prepared according to the following scheme:
adding 20 parts of nano zirconia and 0.1 part of 2-thio-dodecanoic acid-1-methyl ester sodium into 40 parts of water according to the mass parts, shearing, stirring and dispersing at a high speed of 800-r/min for 30min, adding 12 parts of cerium molybdate and 5 parts of nano potassium tripolyphosphate, transferring the materials into a suspension vortex kettle, and suspending the vortex kettle for 5h to obtain the cerium-based binder.
According to the mass parts, 15 parts of montmorillonite and 10 parts of piezoelectric quartz powder are added into 260 parts of distilled water and stirred and mixed uniformly, then 0.7 part of sodium chloride, 0.3 part of tetramethylammonium bromide, 0.3 part of thiadiazole composite lanthanum borate and 0.2 part of 2-diphenyl magnesium bromide are added into a reaction kettle, the temperature is controlled at 97 ℃ and stirred and reacted for 4 hours, then 2 parts of cerium-based binder, 7 parts of bagasse powder are added, the mixture is stirred and reacted for 3 hours at 170 ℃, filtered, dried at 90 ℃, put into a silicon oil tank for polarization, the intensity of polarization electric field is 3kV/mm, the polarization temperature is 137 ℃, the polarization time is 30 minutes, and the mixture is filtered and coated on the inner wall of a smoke outlet, so that the piezoelectric noise removing coating is obtained.
The impact strength of the test specimen was 24.1KJ/m2The impact strength of the heat-treated material was 23.9 KJ/m2The impact strength of the acid-treated material was 23.4 KJ/m2The impact strength of the alkali-treated material was 22.9 KJ/m2The noise is 47dB (A).
Example 2
A rapid cooling absorption tower for treating waste gas generated by resource utilization of hazardous waste inorganic salt is characterized in that main components comprise a rapid cooling tower body, a rapid cooling liquid spray gun and a flue gas inlet and outlet; the quenching tower body comprises a cylindrical section and a conical section, the cylindrical section is arranged at the lower part, and the conical section is arranged at the upper part; the quenching tower body is of a double-layer structure, and the contact surface of the quenching tower body and the flue gas is made of an anticorrosive high-temperature-resistant refractory material; the spray head of the quenching liquid spray gun forms an included angle of 20 degrees with the axis of the quenching tower body, and the atomization of the absorbent slurry is completed by compressed air; the flue gas inlet is arranged at the bottom of the cylindrical section and is provided with a temperature detector for monitoring the temperature of the flue gas inlet, and the flue gas outlet is arranged at the top of the conical section and is provided with a temperature detector for monitoring the temperature of the flue gas outlet.
The quenching liquid spray gun is of a double-layer jacket pipe structure, absorbent slurry flows through the inner pipe, compressed air flows through the outer pipe, and the slurry and the compressed air are strongly mixed at the nozzle head and then are sprayed out from the nozzle, so that the slurry is atomized into fine particles and is contacted with flue gas for absorption.
And a titanium steel composite plate is adopted outside the quenching tower.
The absorbent slurry is 10% calcium hydroxide emulsion.
The anticorrosive high-temperature-resistant refractory material consists of a modified polyether sulfone resin layer and a refractory fiber layer, and the preparation method comprises the following steps:
adding 150 parts of polyether sulfone resin, 60 parts of polyarylsulfone, 35 parts of glass fiber, 0.3 part of 2, 6-tertiary butyl-4-methylphenol, 0.3 part of di (2-ethylhexyl) phthalate, 0.5 part of polyvinyl butyral and 0.2 part of dioctyltin into a torque rheometer mixing roll according to the mass parts, carrying out melt mixing at 310 ℃, and then carrying out extrusion granulation and injection molding by a double-screw extruder according to an extrusion process to obtain a modified polyether sulfone resin layer with the thickness of 80 mm; then a refractory fiber layer with the thickness of 10mm is bonded on the surface of the modified polyether sulfone resin layer by a cerium-based binder, dried at the temperature of 130 ℃ for 8 hours under the pressure of 6MPa, heated to 200 ℃ and thermally treated for 5 hours to obtain the anticorrosive high-temperature-resistant refractory material.
The cerium-based binder is prepared according to the following scheme:
adding 30 parts of nano zirconia and 0.3 part of 2-thio-dodecanoic acid-1-methyl ester sodium into 50 parts of water according to the mass parts, shearing and stirring at a high speed of 1500r/min for 35min, adding 16 parts of cerium molybdate and 9 parts of nano potassium tripolyphosphate, transferring the materials into a suspension vortex kettle, and suspending the vortex kettle for 8h to obtain the cerium-based binder.
According to the mass parts, 10 parts of montmorillonite and 5 parts of piezoelectric quartz powder are added into 200 parts of distilled water and stirred and mixed uniformly, then 0.5 part of sodium chloride, 0.1 part of tetramethylammonium bromide, 0.1 part of thiadiazole composite lanthanum borate and 0.01 part of 2-diphenyl magnesium bromide are added into a reaction kettle, the temperature is controlled at 90 ℃, stirring and reaction are carried out for 3 hours, then 1 part of cerium-based binder, 5 parts of bagasse powder are added, stirring and reaction are carried out for 1 hour at 150 ℃, filtering is carried out, drying is carried out at 80 ℃, then polarization is carried out in a silicon oil tank, the intensity of polarization electric field is 2kV/mm, the polarization temperature is 130 ℃, the polarization time is 10min, filtering is carried out, and the piezoelectric noise removing coating is coated on the inner wall of a flue gas outlet, thus obtaining the piezoelectric noise removing coating.
The impact strength of this test sample was 26.7KJ/m2The impact strength of the heat-treated material was 25.5 KJ/m2The impact strength of the acid-treated material was 25.2KJ/m2The impact strength of the alkali-treated material was 23.8 KJ/m2The noise is 51dB (A). .
Example 3
A rapid cooling absorption tower for treating waste gas generated by resource utilization of hazardous waste inorganic salt is characterized in that main components comprise a rapid cooling tower body, a rapid cooling liquid spray gun and a flue gas inlet and outlet; the quenching tower body comprises a cylindrical section and a conical section, the cylindrical section is arranged at the lower part, and the conical section is arranged at the upper part; the quenching tower body is of a double-layer structure, and the contact surface of the quenching tower body and the flue gas is made of an anticorrosive high-temperature-resistant refractory material; the spray head of the quenching liquid spray gun forms an included angle of 20 degrees with the axis of the quenching tower body, and the atomization of the absorbent slurry is completed by compressed air; the flue gas inlet is arranged at the bottom of the cylindrical section and is provided with a temperature detector for monitoring the temperature of the flue gas inlet, and the flue gas outlet is arranged at the top of the conical section and is provided with a temperature detector for monitoring the temperature of the flue gas outlet.
The quenching liquid spray gun is of a double-layer jacket pipe structure, absorbent slurry flows through the inner pipe, compressed air flows through the outer pipe, and the slurry and the compressed air are strongly mixed at the nozzle head and then are sprayed out from the nozzle, so that the slurry is atomized into fine particles and is contacted with flue gas for absorption.
And a titanium steel composite plate is adopted outside the quenching tower.
The absorbent slurry is 15% calcium hydroxide emulsion.
The anticorrosive high-temperature-resistant refractory material consists of a modified polyether sulfone resin layer and a refractory fiber layer, and the preparation method comprises the following steps:
adding 180 parts of polyether sulfone resin, 80 parts of polyarylsulfone, 40 parts of glass fiber, 0.5 part of 2, 6-tertiary butyl-4-methylphenol, 0.5 part of di (2-ethylhexyl) phthalate, 0.8 part of polyvinyl butyral and 0.4 part of dioctyltin into a torque rheometer mixing roll according to the mass parts, carrying out melt mixing at 350 ℃, and then carrying out extrusion granulation and injection molding by using a double-screw extruder according to an extrusion process to obtain a modified polyether sulfone resin layer with the thickness of 100 mm; and then bonding a refractory fiber layer with the thickness of 20mm to the surface of the modified polyether sulfone resin layer by using a cerium-based binder, drying at the temperature of 150 ℃ for 10 hours under the pressure of 10MPa, and then heating to 210 ℃ for heat treatment for 8 hours to obtain the anticorrosive high-temperature-resistant refractory material.
The cerium-based binder is prepared according to the following scheme:
adding 40 parts of nano zirconia and 0.5 part of 2-thio-dodecanoic acid-1-methyl ester sodium into 60 parts of water according to the mass parts, shearing and stirring at a high speed of 2000r/min for 40min, adding 19 parts of cerium molybdate and 12 parts of nano potassium tripolyphosphate, transferring the materials into a suspension vortex kettle, and suspending for 10h to obtain the cerium-based binder.
Adding 20 parts of montmorillonite and 15 parts of piezoelectric quartz powder into 500 parts of distilled water according to the mass parts, uniformly stirring and mixing, then adding 1.0 part of sodium chloride, 0.8 part of tetramethylammonium bromide, 1 part of thiadiazole composite lanthanum borate and 1 part of 2-diphenyl magnesium bromide into a reaction kettle, stirring and reacting for 7 hours at the temperature of 105 ℃, then adding 5 parts of cerium-based binder and 10 parts of bagasse powder, stirring and reacting for 5 hours at the temperature of 180 ℃, filtering, drying at the temperature of 100 ℃, then putting into a silicon oil tank for polarization, wherein the intensity of a polarized electric field is 3.5kV/mm, the polarization temperature is 142 ℃, the polarization time is 60 minutes, filtering, and coating on the inner wall of a flue gas outlet to obtain the piezoelectric noise removal coating.
The impact strength of this test sample was 27.5KJ/m2The impact strength of the material after heat treatment was 26.3 KJ/m2The impact strength of the acid-treated material was 25.8 KJ/m2The impact strength of the alkali-treated material was 24.1KJ/m2The noise is 42dB (A). .
Example 4
A rapid cooling absorption tower for treating waste gas generated by resource utilization of hazardous waste inorganic salt is characterized in that main components comprise a rapid cooling tower body, a rapid cooling liquid spray gun and a flue gas inlet and outlet; the quenching tower body comprises a cylindrical section and a conical section, the cylindrical section is arranged at the lower part, and the conical section is arranged at the upper part; the quenching tower body is of a double-layer structure, and the contact surface of the quenching tower body and the flue gas is made of an anticorrosive high-temperature-resistant refractory material; the spray head of the quenching liquid spray gun forms an included angle of 20 degrees with the axis of the quenching tower body, and the atomization of the absorbent slurry is completed by compressed air; the flue gas inlet is arranged at the bottom of the cylindrical section and is provided with a temperature detector for monitoring the temperature of the flue gas inlet, and the flue gas outlet is arranged at the top of the conical section and is provided with a temperature detector for monitoring the temperature of the flue gas outlet.
The quenching liquid spray gun is of a double-layer jacket pipe structure, absorbent slurry flows through the inner pipe, compressed air flows through the outer pipe, and the slurry and the compressed air are strongly mixed at the nozzle head and then are sprayed out from the nozzle, so that the slurry is atomized into fine particles and is contacted with flue gas for absorption.
And a titanium steel composite plate is adopted outside the quenching tower.
The absorbent slurry adopts 8% calcium hydroxide emulsion.
The anticorrosive high-temperature-resistant refractory material consists of a modified polyether sulfone resin layer and a refractory fiber layer, and the preparation method comprises the following steps:
adding 150 parts of polyether sulfone resin, 60 parts of polyarylsulfone, 35 parts of glass fiber, 0.3 part of 2, 6-tertiary butyl-4-methylphenol, 0.3 part of di (2-ethylhexyl) phthalate, 0.5 part of polyvinyl butyral and 0.2 part of dioctyltin into a torque rheometer mixing roll according to the mass parts, carrying out melt mixing at 310 ℃, and then carrying out extrusion granulation and injection molding by a double-screw extruder according to an extrusion process to obtain a modified polyether sulfone resin layer with the thickness of 80 mm; then a refractory fiber layer with the thickness of 10mm is bonded on the surface of the modified polyether sulfone resin layer by a cerium-based binder, dried at the temperature of 130 ℃ for 8 hours under the pressure of 6MPa, heated to 200 ℃ and thermally treated for 5 hours to obtain the anticorrosive high-temperature-resistant refractory material.
The cerium-based binder is prepared according to the following scheme:
adding 40 parts of nano zirconia and 0.5 part of 2-thio-dodecanoic acid-1-methyl ester sodium into 60 parts of water according to the mass parts, shearing and stirring at a high speed of 2000r/min for 40min, adding 19 parts of cerium molybdate and 12 parts of nano potassium tripolyphosphate, transferring the materials into a suspension vortex kettle, and suspending for 10h to obtain the cerium-based binder.
According to the mass parts, 10 parts of montmorillonite and 15 parts of piezoelectric quartz powder are added into 200 parts of distilled water and stirred and mixed uniformly, then 1.0 part of sodium chloride, 0.1 part of tetramethylammonium bromide, 1 part of thiadiazole composite lanthanum borate and 0.01 part of 2-diphenyl magnesium bromide are added into a reaction kettle, stirred and reacted for 3-7h at the temperature of 105 ℃, then 1 part of cerium-based binder and 10 parts of bagasse powder are added, stirred and reacted for 5h at the temperature of 150 ℃, filtered, dried at the temperature of 80 ℃, put into a silicon oil tank for polarization, the intensity of polarized electric field is 3.5kV/mm, the polarization temperature is 130 ℃, the polarization time is 60min, and the mixture is filtered and coated on the inner wall of a smoke outlet, so that the piezoelectric noise removing coating is obtained.
The impact strength of the test specimen was 25.2KJ/m2The impact strength of the material after heat treatment was 24.4 KJ/m2The impact strength of the acid-treated material was 24.2 KJ/m2The impact strength of the alkali-treated material was 23.6KJ/m2The noise is 45dB (A).
Comparative example 1
The procedure is as in example 1, except that no polyarylene sulfone is added.
Impact of the present test sampleThe strength was 18.6KJ/m2The impact strength of the heat-treated material was 18.1 KJ/m2The impact strength of the acid-treated material was 17.2 KJ/m2The impact strength of the alkali-treated material was 16.4 KJ/m2
Comparative example 2
The procedure of example 1 was repeated except that no glass fiber was added.
The impact strength of this test sample was 12.7KJ/m2The impact strength of the heat-treated material was 11.0KJ/m2The impact strength of the acid-treated material was 10.4KJ/m2The impact strength of the alkali-treated material was 10.1 KJ/m2
Comparative example 3
Example 1 was repeated except that dioctyltin was not added.
The impact strength of this test sample was 23.6KJ/m2The impact strength of the heat-treated material was 23.1 KJ/m2The impact strength of the acid-treated material was 22.4 KJ/m2The impact strength of the alkali-treated material was 21.5 KJ/m2
Comparative example 4
The procedure of example 1 was repeated except that cerium molybdate was not added.
The impact strength of the test sample was 23.3KJ/m2The impact strength of the material after heat treatment was 22.4 KJ/m2The impact strength of the acid-treated material was 20.1 KJ/m2The impact strength of the alkali-treated material was 19.5 KJ/m2
Comparative example 5
The same procedure as in example 1 was repeated except that the electric noise removing coating was not applied with pressure.
The noise is 86dB (A).
Comparative example 6
The procedure of example 1 was repeated except that the thiadiazole complex lanthanum borate was not added.
The noise is 71dB (A).
Comparative example 7
The procedure is as in example 1 except that 2-diphenylmagnesium bromide is not added.
The noise is 65dB (A).
Comparative example 8
The procedure of example 1 was repeated except that the bagasse powder was not added.
The noise is 58dB (A).

Claims (7)

1. A rapid cooling absorption tower for treating waste gas generated by resource utilization of hazardous waste inorganic salt is characterized in that main components comprise a rapid cooling tower body, a rapid cooling liquid spray gun and a flue gas inlet and outlet; the quenching tower body comprises a cylindrical section and a conical section, the cylindrical section is arranged at the lower part, and the conical section is arranged at the upper part; the quenching tower body is of a double-layer structure, and the contact surface of the quenching tower body and the flue gas is made of an anticorrosive high-temperature-resistant refractory material; the spray head of the quenching liquid spray gun forms an included angle of 20 degrees with the axis of the quenching tower body, and the atomization of the absorbent slurry is completed by compressed air; the smoke inlet is arranged at the bottom of the cylindrical section and is provided with a temperature detector for monitoring the temperature of the smoke inlet, the smoke outlet is arranged at the top of the conical section, the outlet is provided with a piezoelectric noise removal coating for converting noise into current to be led out, and the temperature detector is arranged for monitoring the temperature of the smoke outlet.
2. The quenching absorption tower for treating the waste gas generated by the reclamation of the hazardous waste inorganic salt as claimed in claim 1, is characterized in that: the quenching liquid spray gun is of a double-layer jacket pipe structure, absorbent slurry flows through the inner pipe, compressed air flows through the outer pipe, and the slurry and the compressed air are strongly mixed at the nozzle head and then are sprayed out from the nozzle, so that the slurry is atomized into fine particles and is contacted with flue gas for absorption.
3. The quenching absorption tower for treating the waste gas generated by the reclamation of the hazardous waste inorganic salt as claimed in claim 1, is characterized in that: and a titanium steel composite plate is adopted outside the quenching tower.
4. The quenching absorption tower for treating the waste gas generated by the reclamation of the hazardous waste inorganic salt as claimed in claim 1, is characterized in that: the absorbent slurry adopts 5 to 15 percent of calcium hydroxide emulsion.
5. The quenching absorption tower for treating the waste gas generated by the reclamation of the hazardous waste inorganic salt as claimed in claim 1, is characterized in that: the anticorrosive high-temperature-resistant refractory material consists of a modified polyether sulfone resin layer and a refractory fiber layer, and the preparation method comprises the following steps:
adding 120-180 parts of polyethersulfone resin, 40-80 parts of polyarylsulfone, 30-40 parts of glass fiber, 0.1-0.5 part of 2, 6-tertiary butyl-4-methylphenol, 0.1-0.5 part of di (2-ethylhexyl) phthalate, 0.2-0.8 part of polyvinyl butyral and 0.05-0.4 part of dioctyltin into a torque rheometer mixing roll according to the mass parts, carrying out melt mixing at 290-350 ℃, and then carrying out extrusion granulation and injection molding by using a double-screw extruder according to an extrusion process to obtain a modified polyethersulfone resin layer with the thickness of 60-100 mm; then a refractory fiber layer with the thickness of 5-20mm is bonded on the surface of the modified polyether sulfone resin layer by a cerium-based binder, and the refractory fiber layer is dried at the temperature of 100-150 ℃ for 6-10h under the pressure of 3-10MPa and then heated to the temperature of 180-210 ℃ for heat treatment for 3-8h, thus obtaining the anticorrosive high-temperature-resistant refractory material.
6. The quenching absorption tower for treating the waste gas generated by the reclamation of the hazardous waste inorganic salt as claimed in claim 5, is characterized in that: the cerium-based binder is prepared according to the following scheme:
adding 20-40 parts of nano zirconia and 0.1-0.5 part of 2-thio-dodecanoic acid-1-methyl ester sodium into 40-60 parts of water according to the mass parts, shearing, stirring and dispersing at a high speed of 800 plus 2000r/min for 30-40min, then adding 0.12-1.9 parts of cerium molybdate and 5-12 parts of nano potassium tripolyphosphate, transferring the materials into a hovering vortex kettle, and hovering the vortex for 5-10h to obtain the cerium-based binder.
7. The quenching absorption tower for treating the waste gas generated by the resource utilization of the hazardous waste inorganic salt as claimed in claim 1 or 5, which is characterized in that: the piezoelectric noise-removing coating is prepared according to the following scheme:
according to the mass portion, 10-20 portions of montmorillonite and 5-15 portions of piezoelectric quartz powder are added into 500 portions of 200-plus distilled water to be stirred and mixed evenly, then 0.5-1.0 portion of sodium chloride and 0.1-0.8 portion of tetramethylammonium bromide, 0.1-1 portion of thiadiazole composite lanthanum borate and 0.01-1 portion of 2-diphenyl magnesium bromide are added into a reaction kettle to be stirred and reacted for 3-7h under the temperature controlled to be 90-105 ℃, then 1-5 portions of cerium-based binder and 5-10 portions of bagasse powder are added to be stirred and reacted for 1-5h under the temperature of 150-plus 180 ℃, filtered and then dried under the temperature of 80-100 ℃, and then put into a silicon oil tank to be polarized, the polarization electric field intensity is 2-3.5kV/mm, the polarization temperature is 130-plus 142 ℃, the polarization time is 10-60min, and filtering, and coating on the inner wall of the flue gas outlet to obtain the piezoelectric noise-removing coating.
CN201911075921.3A 2019-07-10 2019-11-06 Quenching absorption tower for treating waste gas generated by recycling hazardous waste inorganic salt Active CN110756006B (en)

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