CN103212290A - Filter bag based on nano catalytic desulfurization technology and preparation method thereof - Google Patents
Filter bag based on nano catalytic desulfurization technology and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a filter bag based on nano catalytic desulfurization technology and a preparation method thereof. The filter bag comprises a filter bag body, wherein the filter bag body is prepared from a non-woven needled felt; the non-woven needled felt is in a three-layer structure; a base cloth is positioned at the middle layer; fiber layers with the function of nano catalytic desulfurization are positioned at the upper and lower layers; and nano catalyst coatings are arranged on the surfaces of the upper and lower fiber layers of the non-woven needled felt. The filter bag has the beneficial effects that the filter bag utilizes a nano catalyst with the function of desulfurization to catalyze sulfur dioxide in the smoke dust into sulfur trioxide solids, intercepts the sulfur trioxide solids on the surface of a dedusting and filtering cloth bag and removes the sulfur trioxide solids out of deduster equipment via a deashing procedure, thus achieving the effect of desulfurization; and sites are unnecessary to be additionally occupied to install the equipment for special desulfurization, and the desulfurization operation can be completed only by installing the filter bag in the dedusting equipment.
Description
Technical field
The present invention relates to a kind of filter bag and preparation method thereof, relate in particular to a kind of filter bag based on the nano-catalytic desulfur technology and preparation method thereof.
Background technology
Problem of environmental pollution has become the important restraining factors of sustainable development of China.According to State Environmental Protection Administration's measuring and calculating, the loss that China's problem of environmental pollution is caused accounts for 12% of gross national product, and pollution problem is very serious.At present, the domestic industry of atmosphere pollution that causes mainly contains metallurgy, steel-making, cement, thermoelectricity, chemical industry etc., and these industries are main production measure with fire coal still.This energy resource structure based on coal has determined that carbon dioxide that coal burning is produced, sulfur dioxide, flue dust, dust etc. are the key factors that causes China's atmosphere pollution.Sulfur dioxide is a kind of colourless gas with intense stimulus smell, easily is dissolved in blood and other stickiness liquid of human body.Sulfur dioxide in the atmosphere can cause respiratory inflammation, bronchitis, pulmonary emphysema, eye conjunctivitis etc.Also can be that teen-age immunity reduces simultaneously, resistance against diseases dies down.Sulfur dioxide can generate sulfate aerosol under the effect of oxidant, light, sulfate aerosol can make the people cause a disease, and increases the patient death rate.According to the research of OECD (OECD), when sulfate year concentration at 10 μ g/m
3During the left and right sides, the concentration of every minimizing 10% can make the death rate reduce by 0.5%.Sulfur dioxide can also stick with the floating dust in the atmosphere, sucks the floating dust that has sulfur dioxide when human body respiration, and the toxicity of sulfur dioxide is strengthened.Studies show that under the influence of the sulfur dioxide of high concentration, plant produces acute hazard, blade surface produces necrotic plaque, or makes directly that plant leaf blade is withered to come off; Under the influence of low-concentration sulfur dioxide, the GF of plant is affected, and causes output to descend, and quality degenerates.To with regard to the metal, particularly the corrosion to steel construction brings very big loss to national economy every year with regard to sulfur dioxide.According to estimates, the annual direct economic loss of bringing because of metal erosion of industrially developed country accounts for 2%～4% of total value of production in national economy.
Therefore, in the high pollution industry deduster items of equipments such as metallurgy, steel-making, cement, thermoelectricity, chemical industry desulphurization plant being installed.At present, in the industry for the major measure of the desulfurization work in the deduster items of equipment: be to adopt to increase to build the system engineering (desulfurizing tower) that a cover is specifically designed to desulfurization and finish desulfurization work at the deduster system front end.Its operation principle is to adopt liquid lime white or liquid strong basicity desulfurizing agent to spray on the reactor, sulfur dioxide in the flue dust can run into liquid lime white or liquid strong basicity desulfurizing agent during by reactor, after meeting, the two can be catalyzed into the solid of sulfur trioxide, sulfur trioxide in the flue dust will be trapped within and filter on the cloth bag at this moment, the sulfur trioxide solid will be removed away in deduster when taking deashing work, thereby be utilized this road program to play desulfurized effect along with deduster.Yet the method for this increase desulphurization plant system has just increased the cost of the investment operation of enterprise virtually.Setting up a complete desulphurization plant system not only needs the place of certain scale, also needs special technical staff's monitoring.The investment of equipment, personnel's investment adds the wasting of resources of occupied ground, is all increasing the investment operation cost of enterprise.
Summary of the invention
Be to solve problems of the prior art, the object of the present invention is to provide a kind of filter bag based on the nano-catalytic desulfur technology and preparation method thereof.Utilize nanocatalyst that the sulfur dioxide catalysis in the flue dust is become the sulfur trioxide solid, and be trapped on the surface of dust removal and filtration cloth bag, the sulfur trioxide solid is cleared out of deduster equipment, thereby play the effect of desulfurization by the deashing operation.The present invention need not the equipment that other occupied ground is set up special desulfurization, only filter bag need be installed in the cleaner and can finish desulfurization work.
The technical solution adopted in the present invention:
A kind of filter bag based on the nano-catalytic desulfur technology comprises the filter bag body, and the filter bag body adopts the nonwoven Nomex to make; The nonwoven Nomex is a three-decker, and its intermediate layer is a base cloth, and upper and lower layer is for having the fibrage of nano-catalytic desulfurizing function; The upper and lower fibrolaminar surface of nonwoven Nomex all scribbles nano-catalyst coating.
Fibrage accounts for the 71-76% of nonwoven Nomex unit are gross mass, and surplus is a base cloth.
Fibrage and base cloth are made into by the fiber with nano-catalytic desulfurizing function.
Fiber with nano-catalytic desulfurizing function is made up of Nano titanium nitride powder, nano cerium oxide powder and nanometer platinum rhodium palladium powder and base-material, wherein the mass percent of Nano titanium nitride powder, nano cerium oxide powder and nanometer platinum rhodium palladium powder is 0.5-5%, and surplus is a base-material.
Base-material is polyphenylene sulfide or polyimides or polytetrafluoroethylene (PTFE).
Nano-catalyst coating is by Nano titanium nitride powder, nano cerium oxide powder, nanometer platinum rhodium palladium powder, water and measure the tetrafluoro emulsion admittedly and make, wherein the mass percent of Nano titanium nitride powder, nano cerium oxide powder and nanometer platinum rhodium palladium powder is 0.5-5%, admittedly measuring the mass percent of tetrafluoro emulsion is 60%, surplus is a water.
Preparation method based on the filter bag of nano-catalytic desulfur technology may further comprise the steps:
(1) with after Nano titanium nitride powder, nano cerium oxide powder and nanometer platinum rhodium palladium powder and the base-material also abundant stirring of proportioning by mass percentage, is woven into fibrage by spinning-drawing machine with nano-catalytic desulfurizing function;
(2) Nano titanium nitride powder, nano cerium oxide powder and three kinds of powders of nanometer platinum rhodium palladium powder and base-material are fully stirred by mass percentage after, be woven into 20 monofilament by the weaving machine of melting and spraying, synthesize 2-3 thigh silk again after, be made into base cloth by loom;
(3) fibrage and the base cloth that will have a nano-catalytic desulfurizing function is made into the nonwoven Nomex by non-woven fabrics needle machine;
(4), make the nanocatalyst slurry with Nano titanium nitride powder, nano cerium oxide powder, nanometer platinum rhodium palladium powder, water and measure the tetrafluoro emulsion admittedly and fully stir with dispersator;
(5) with nanocatalyst slurry coated on the upper and lower surface of nonwoven Nomex, be shaped into nanocatalyst nonwoven Nomex through heat setting machine;
(6) nanocatalyst nonwoven Nomex is made the desulfurization filter bag that contains nanocatalyst that mechanism makes the different size size through filter bag.
Fiber size in the step (1) is (1-3D) * (38-76mm).
Base cloth quality in the step (2) is 100-300g/m
2
Heat setting temperature in the step (5) is 100-300 ℃.
Beneficial effect of the present invention:
The desulfurization filter bag that contains nanocatalyst of the present invention, adopt base cloth and fiber to make the nonwoven Nomex with nano-catalytic desulfurizing function, it is base-material that base cloth all adopts polyphenylene sulfide, polyimides or polytetrafluoroethylene (PTFE) with the fiber with nano-catalytic desulfurizing function, and added the nano-powder that is combined into by Nano titanium nitride powder, nano cerium oxide powder and nanometer platinum rhodium palladium powder, can effectively improve base-material anti-strong acid and strong base, anti-hydrolysis, anti-oxidant, the function of high temperature resistant and desulfurization.On the nonwoven Nomex, be coated with the nano-powder that is combined into by Nano titanium nitride powder, nano cerium oxide powder and nanometer platinum rhodium palladium powder, utilizing nanocatalyst that the sulfur dioxide catalysis that contains in the flue dust is become the sulfur trioxide solid is trapped on the surface of dust removal and filtration cloth bag afterwards, by the deashing operation of deduster equipment the sulfur trioxide solid is removed again, thereby play the effect of desulfurization, can be directly installed on the cleaner, need not the equipment that other occupied ground is set up a special desulfurization.
Description of drawings
Fig. 1 is a desulfurization filter bag of the present invention
Among the figure: 1 is base cloth, and 2 for having the fibrage of nano-catalytic desulfurizing function, and 3 is nano-catalyst coating.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail.
Embodiment one
(1) the polyphenylene sulfide base-material of the Nano titanium nitride powder of mass percent 5%, 5% nano cerium oxide powder, 5% nanometer platinum rhodium palladium powder and 85% is fully stirred after, be woven into the fibrage with nano-catalytic desulfurizing function 2 of 1D * 38mm by spinning-drawing machine;
(2) the polyphenylene sulfide base-material of the Nano titanium nitride powder of mass percent 0.5%, 0.5% nano cerium oxide powder, 0.5% nanometer platinum rhodium palladium powder and 98.5% is fully stirred after, be woven into 20 monofilament by the weaving machine of melting and spraying, after synthesizing 2 strands of silks again, be made into 100g base cloth 1 by loom;
(3) fibrage with nano-catalytic desulfurizing function 2 of mass percent 71% and 29% base cloth 1 are made into the nonwoven Nomex by non-woven fabrics needle machine;
(4) the Nano titanium nitride powder of mass percent 1%, 2% nano cerium oxide powder, 1% nanometer platinum rhodium palladium powder, 35% water and 60% solid amount tetrafluoro emulsion are fully stirred with dispersator, make nano-catalytic desulfurizing agent slurry;
(5) with nano-catalytic desulfurizing agent slurry coated on the upper and lower surface of nonwoven Nomex, be shaped into nano-catalytic desulfurizing agent nonwoven Nomex through 100 ℃ of heat setting machines;
(6) nano-catalytic desulfurizing agent nonwoven Nomex is made the filter bag based on the nano-catalytic desulfur technology that mechanism is made the different size size through filter bag.
Embodiment two
(1) the polyimides base-material of the Nano titanium nitride powder of mass percent 0.5%, 0.5% nano cerium oxide powder, 0.5% nanometer platinum rhodium palladium powder and 98.5% is fully stirred after, be woven into the fibrage with nano-catalytic desulfurizing function 2 of 3D * 76mm by spinning-drawing machine;
(2) the polyimides base-material of the Nano titanium nitride powder of mass percent 5%, 5% nano cerium oxide powder, 5% nanometer platinum rhodium palladium powder and 85% is fully stirred after, be woven into 20 monofilament by the weaving machine of melting and spraying, after synthesizing 3 strands of silks again, be made into 200g base cloth 1 by loom;
(3) fibrage with nano-catalytic desulfurizing function 2 of mass percent 72% and 28% base cloth 1 are made into the nonwoven Nomex by non-woven fabrics needle machine;
(4) the Nano titanium nitride powder of mass percent 4%, 3% nano cerium oxide powder, 1% nanometer platinum rhodium palladium powder, 32% water and 60% solid amount tetrafluoro emulsion are fully stirred with dispersator, make nano-catalytic desulfurizing agent slurry;
(5) with nano-catalytic desulfurizing agent slurry coated on the upper and lower surface of nonwoven Nomex, be shaped into nano-catalytic desulfurizing agent nonwoven Nomex through 200 ℃ of heat setting machines;
(6) nano-catalytic desulfurizing agent nonwoven Nomex is made the filter bag based on the nano-catalytic desulfur technology that mechanism makes the different size size through filter bag.
Embodiment three
(1) the polytetrafluoroethylene (PTFE) base-material of the Nano titanium nitride powder of mass percent 5%, 5% nano cerium oxide powder, 3% nanometer platinum rhodium palladium powder and 87% is fully stirred after, be woven into the fibrage with nano-catalytic desulfurizing function 2 of 2D * 50mm by spinning-drawing machine;
(2) the polytetrafluoroethylene (PTFE) base-material of the Nano titanium nitride powder of mass percent 5%, 5% nano cerium oxide powder, 2% nanometer platinum rhodium palladium powder and 88% is fully stirred after, be woven into 20 monofilament by the weaving machine of melting and spraying, after synthesizing 2 strands of silks again, be made into 300g base cloth 1 by loom;
(3) fibrage with nano-catalytic desulfurizing function 2 of mass percent 73% and 27% base cloth 1 are made into the nonwoven Nomex by non-woven fabrics needle machine;
(4) the Nano titanium nitride powder of mass percent 4%, 1% nano cerium oxide powder, 3% nanometer platinum rhodium palladium powder, 32% water and 60% solid amount tetrafluoro emulsion are fully stirred with dispersator, make nano-catalytic desulfurizing agent slurry;
(5) with nano-catalytic desulfurizing agent slurry coated on the upper and lower surface of nonwoven Nomex, be shaped into nano-catalytic desulfurizing agent nonwoven Nomex through 300 ℃ of heat setting machines;
(6) nano-catalytic desulfurizing agent nonwoven Nomex is made the filter bag based on the nano-catalytic desulfur technology that mechanism makes the different size size through filter bag.
Embodiment four
(1) the polyphenylene sulfide base-material of the Nano titanium nitride powder of mass percent 3%, 3% nano cerium oxide powder, 3% nanometer platinum rhodium palladium powder and 91% is fully stirred after, be woven into the fibrage with nano-catalytic desulfurizing function 2 of 1D * 38mm by spinning-drawing machine;
(2) the polyphenylene sulfide base-material of the Nano titanium nitride powder of mass percent 3%, 3% nano cerium oxide powder, 3% nanometer platinum rhodium palladium powder and 91% is fully stirred after, be woven into 20 monofilament by the weaving machine of melting and spraying, after synthesizing 3 strands of silks again, be made into 150g base cloth 1 by loom;
(3) fibrage with nano-catalytic desulfurizing function 2 of mass percent 74% and 26% base cloth 1 are made into the nonwoven Nomex by non-woven fabrics needle machine;
(4) the Nano titanium nitride powder of mass percent 1%, 3% nano cerium oxide powder, 4% nanometer platinum rhodium palladium powder, 32% water and 60% solid amount tetrafluoro emulsion are fully stirred with dispersator, make nano-catalytic desulfurizing agent slurry;
(5) with nano-catalytic desulfurizing agent slurry coated on the upper and lower surface of nonwoven Nomex, be shaped into nano-catalytic desulfurizing agent nonwoven Nomex through 150 ℃ of heat setting machines;
(6) nano-catalytic desulfurizing agent nonwoven Nomex is made the filter bag based on the nano-catalytic desulfur technology that mechanism makes the different size size through filter bag.
Embodiment five
(1) the polyimides base-material of the Nano titanium nitride powder of mass percent 2%, 2% nano cerium oxide powder, 2% nanometer platinum rhodium palladium powder and 94% is fully stirred after, be woven into the fibrage with nano-catalytic desulfurizing function 2 of 1D * 38mm by spinning-drawing machine;
(2) the polytetrafluoroethylene (PTFE) base-material of the Nano titanium nitride powder of mass percent 2%, 2% nano cerium oxide powder, 2% nanometer platinum rhodium palladium powder and 96% is fully stirred after, be woven into 20 monofilament by the weaving machine of melting and spraying, after synthesizing 3 strands of silks again, be made into 250g base cloth 1 by loom;
(3) fibrage with nano-catalytic desulfurizing function 2 and 25% base cloth 1 with mass percent 75% is made into the nonwoven Nomex by non-woven fabrics needle machine;
(4) the Nano titanium nitride powder of mass percent 0.5%, 0.5% nano cerium oxide powder, 0.5% nanometer platinum rhodium palladium powder, 38.5% water and 60% solid amount tetrafluoro emulsion are fully stirred with dispersator, make nano-catalytic desulfurizing agent slurry;
(5) with nano-catalytic desulfurizing agent slurry coated on the upper and lower surface of nonwoven Nomex, be shaped into nano-catalytic desulfurizing agent nonwoven Nomex through 250 ℃ of heat setting machines;
(6) nano-catalytic desulfurizing agent nonwoven Nomex is made the filter bag based on the nano-catalytic desulfur technology that mechanism makes the different size size through filter bag.
Embodiment six
(1) the polyphenylene sulfide base-material of the Nano titanium nitride powder of mass percent 4%, 4% nano cerium oxide powder, 4% nanometer platinum rhodium palladium powder and 88% is fully stirred after, be woven into the fibrage with nano-catalytic desulfurizing function 2 of 1D * 38mm by spinning-drawing machine;
(2) the polyimides base-material of the Nano titanium nitride powder of mass percent 4%, 4% nano cerium oxide powder, 4% nanometer platinum rhodium palladium powder and 88% is fully stirred after, be woven into 20 monofilament by the weaving machine of melting and spraying, after synthesizing 2 strands of silks again, be made into 200g base cloth 1 by loom;
(3) fibrage with nano-catalytic desulfurizing function 2 of mass percent 76% and 24% base cloth 1 are made into the nonwoven Nomex by non-woven fabrics needle machine;
(4) the Nano titanium nitride powder of mass percent 5%, 5% nano cerium oxide powder, 5% nanometer platinum rhodium palladium powder, 25% water and 60% solid amount tetrafluoro emulsion are fully stirred with dispersator, make nano-catalytic desulfurizing agent slurry;
(5) with nano-catalytic desulfurizing agent slurry coated on the upper and lower surface of nonwoven Nomex, be shaped into nano-catalytic desulfurizing agent nonwoven Nomex through 300 ℃ of heat setting machines;
(6) nano-catalytic desulfurizing agent nonwoven Nomex is made the filter bag based on the nano-catalytic desulfur technology that mechanism makes the different size size through filter bag.
Claims (10)
1. the filter bag based on the nano-catalytic desulfur technology comprises the filter bag body, it is characterized in that: described filter bag body adopts the nonwoven Nomex to make; Described nonwoven Nomex is a three-decker, and its intermediate layer is a base cloth, and upper and lower layer is for having the fibrage of nano-catalytic desulfurizing function.
2. desulfurization filter bag according to claim 1 is characterized in that: the upper and lower fibrolaminar surface of described nonwoven Nomex all scribbles nano-catalyst coating.
3. desulfurization filter bag according to claim 1 is characterized in that: described fibrage and described base cloth are made into by the fiber with nano-catalytic desulfurizing function; Described fibrage accounts for the 71-76% of nonwoven Nomex unit are gross mass, and surplus is a base cloth.
4. desulfurization filter bag according to claim 1, it is characterized in that: described fiber with nano-catalytic desulfurizing function is made up of Nano titanium nitride powder, nano cerium oxide powder and nanometer platinum rhodium palladium powder and base-material, wherein the mass percent of Nano titanium nitride powder, nano cerium oxide powder and nanometer platinum rhodium palladium powder is 0.5-5%, and surplus is a base-material.
5. desulfurization filter bag according to claim 4 is characterized in that: described base-material is polyphenylene sulfide or polyimides or polytetrafluoroethylene (PTFE).
6. desulfurization filter bag according to claim 1, it is characterized in that: described nano-catalyst coating is by Nano titanium nitride powder, nano cerium oxide powder, nanometer platinum rhodium palladium powder, water and measure the tetrafluoro emulsion admittedly and make, wherein the mass percent of Nano titanium nitride powder, nano cerium oxide powder and nanometer platinum rhodium palladium powder is 0.5-5%, admittedly measuring the mass percent of tetrafluoro emulsion is 60%, surplus is a water.
7. according to the preparation method of each described filter bag based on the nano-catalytic desulfur technology of claim 1-6, it is characterized in that: may further comprise the steps:
(1) with after Nano titanium nitride powder, nano cerium oxide powder and nanometer platinum rhodium palladium powder and the base-material also abundant stirring of proportioning by mass percentage, is woven into fibrage by spinning-drawing machine with nano-catalytic desulfurizing function;
(2) Nano titanium nitride powder, nano cerium oxide powder and three kinds of powders of nanometer platinum rhodium palladium powder and base-material are fully stirred by mass percentage after, be woven into 20 monofilament by the weaving machine of melting and spraying, synthesize 2-3 thigh silk again after, be made into base cloth by loom;
(3) fibrage and the base cloth that will have a nano-catalytic desulfurizing function is made into the nonwoven Nomex by non-woven fabrics needle machine;
(4), make the nanocatalyst slurry with Nano titanium nitride powder, nano cerium oxide powder, nanometer platinum rhodium palladium powder, water and measure the tetrafluoro emulsion admittedly and fully stir with dispersator;
(5) with nanocatalyst slurry coated on the upper and lower surface of nonwoven Nomex, be shaped into nanocatalyst nonwoven Nomex through heat setting machine;
(6) nanocatalyst nonwoven Nomex is made the desulfurization filter bag that contains nanocatalyst that mechanism is made the different size size through filter bag.
8. the preparation method of desulfurization filter bag according to claim 7 is characterized in that: the fiber size in the step (1) is (1-3D) * (38-76mm).
9. the preparation method of desulfurization filter bag according to claim 7 is characterized in that: the base cloth quality in the step (2) is 100-300g/m
2
10. the preparation method of desulfurization filter bag according to claim 7 is characterized in that: the heat setting temperature in the step (5) is 100-300 ℃.
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| CN109107320A (en) * | 2018-09-21 | 2019-01-01 | 胡新军 | A kind of desulfurizing industrial fume tower and method |
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