CN109289330A - A kind of sheet stock and its manufacturing method integrating dust removal by filtration and catalytic denitration - Google Patents
A kind of sheet stock and its manufacturing method integrating dust removal by filtration and catalytic denitration Download PDFInfo
- Publication number
- CN109289330A CN109289330A CN201811355252.0A CN201811355252A CN109289330A CN 109289330 A CN109289330 A CN 109289330A CN 201811355252 A CN201811355252 A CN 201811355252A CN 109289330 A CN109289330 A CN 109289330A
- Authority
- CN
- China
- Prior art keywords
- filter
- substrate
- flue gas
- fiber
- manganese
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0001—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0407—Additives and treatments of the filtering material comprising particulate additives, e.g. adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/2073—Manganese
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a kind of sheet stocks and its manufacturing method for integrating dust removal by filtration and catalytic denitration.The sheet stock includes the substrate that may filter that flue gas, and the catalyst for denitration is attached on the substrate that may filter that flue gas.Steps are as follows for the manufacturing method: carrying out polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber to be mixed to prepare substrate first；Secondly sticky filtrate is made in partial substrate；Sticky filtrate is prepared into nm-class catalyst powder with containing elements such as Mn, Ce, Zr, Ti, Fe, Cu by third step；4th step, by the elements lotion such as the powder being prepared into and manganese-base oxide；5th step dips the substrate into manganese-base oxide lotion and sheet stock is made.In sheet stock merging bag filter of the invention, catalytic denitration processing is carried out to industrial smoke again while cigarette ash in filtering industrial smoke, moreover, avoiding land occupation problem, investment is less, is conducive to the popularization and application of bag-type dust.
Description
Technical field
The present invention relates to products and its manufacturing method that a kind of pair of industrial smoke carries out denitration and dedusting, more particularly to collect
Filtering dust collecting and catalytic denitration are in the sheet stock and its manufacturing method of one.
Background technique
Nitrogen oxides (NOx) and fine particle are Air Pollutant Discharges.NOx be to be formed acid rain, photochemical fog and
The main reason for greenhouse effects, and PM10 fine particle below is poisonous and harmful to human body, nitrogen oxides and dust fine grained
It is also the important predecessor of haze.Cement plant is the important emission source of nitrogen oxides, dust, smoke pollution problem increasingly by
To attention.Existing nitrogen oxides Treatment process mainly has low nitrogen burning, SNCR, SCR etc..Wherein mature efficient denitration technology
Mainly (selective catalytic reduction) SCR technology, denitrification rate height (> 90%), technology maturation, but need to meet 270-320
DEG C temperature window, mainly there is the arrangements such as high temperature high ash, low temperature low ash, and cement kiln high-temperature high ash arrangement temperature range is suitable
It closes, usual dust concentration is high, it is affected to service life, the activity etc. of SCR catalyst, catalyst higher cost.Low temperature low ash side
Formula is mounted on deduster rear end, and dust concentration is low, but flue-gas temperature is low, needs to reheat, and operating cost is high.Treating flour dust skill
Art is mainly electric precipitation, bag-type dust and electric bag dust, and wherein sack cleaner is in industrial furnace using more and mature, temperature
Degree is suitable for dust emission requirement at this stage at 160-200 DEG C.At present suitable for cement kiln SCR catalysis material be mostly with
TiO2 is carrier, due to TiO2 carrier higher cost, leads to the expensive of catalysis material product, in addition, in cement kiln tail gas
Also contain a large amount of dust, the processing of dust and NOx usually independently carry out, and realize dedusting-denitration integration, will save
The overall cost and investment of pollutant removing, are of great significance to the energy-saving and emission-reduction of cement industry.
Existing patent, technical research are substantially compound, a newly-built device, such as invention for denitration, the single technique of dedusting
Patent CN204469519U, CN204208445U, CN101983755A, CN1698933A etc.；Other patent is with metal
Material is carrier supported catalyst, as patent of invention CN104190399A, 201010291794.3, CN105315000A,
CN104524886A, CN205699844U etc..These material substrates are difficult to adapt to acid, alkali, oxidation, moisture, blowback, wear-resisting, more
Change equal functional requirements.Service life is shorter, and operating cost is higher.
It is administered with national atmosphere and requires to improve, existing standard and technology do not adapt to new environmental protection policy.If
Individually construction SCR faces land occupation for existing enterprise, influences the problems such as production run, investment.And with other flue gases
The control of the pollutant factor is discharged, and the land occupation problem of environmental protection facility will be protruded more.Therefore, base is transform as with bag filter
Plinth, the exploitation for carrying out dust removal integrated filtrate of low temperature etc. implement minimum discharge for industrial furnace and are of great significance.
Summary of the invention
The invention solves first technical problem be to provide a kind of piece for integrating dust removal by filtration and catalytic denitration
Material, the sheet stock are placed in bag filter, carry out catalytic denitration to industrial smoke again while cigarette ash in filtering industrial smoke
Processing, moreover, avoiding land occupation problem, investment is less, is conducive to the popularization and application of bag-type dust.
The invention solves second technical problem be to provide a kind of piece for integrating dust removal by filtration and catalytic denitration
Expect manufacturing method, is placed in bag filter with the sheet stock that this method manufactures, it is again right while cigarette ash in filtering industrial smoke
Industrial smoke carries out catalytic denitration processing, moreover, avoiding land occupation problem, investment is less, and the popularization for being conducive to bag-type dust is answered
With.
For product, in order to solve above-mentioned first technical problem, the present invention provides a kind of collection dust removal by filtration and urge
Change denitration is densely covered with dust filtering air hole in the sheet stock of one, the substrate including may filter that flue gas, the substrate that may filter that flue gas,
The catalyst for denitration is attached on the substrate that may filter that flue gas.
The substrate that may filter that flue gas is woven fabric or looped fabric or non-woven cloth；
The non-woven cloth is to mix fiber by shredding, combing networking, cross lapping, pre-needling, spun lacing, dry and roll up
Around, calendering, singe, be made after thermal finalization and may filter that the non-woven fabrics of flue gas；
The woven fabric is that fiber is made up to the woven fabric that may filter that flue gas of shredding, combing, spinning, woven fabric；
The looped fabric is that fiber is made up to the looped fabric that may filter that flue gas of shredding, combing, spinning, twisting, knitting；
The substrate with a thickness of 1mm-3mm；
The substrate with a thickness of 1.5mm-2mm；
The fiber includes polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber；
The proportion of polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber is 60~70:40~30；
The proportion of polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber is 65:35；
The catalyst is manganese based composite catalyst；
The manganese based composite catalyst is that manganese-base oxide is mixed with nm-class catalyst powder；
The nm-class catalyst powder contains the elements such as cohesive material, manganese Mn, cerium Ce, zirconium Zr, titanium Ti, iron Fe, copper Cu；
The cohesive material is organic silicon modified polyurethane.
Integrate dust removal by filtration and the sheet stock of catalytic denitration of the invention has below compared with prior art beneficial to effect
Fruit.
1, the technical program is described to may filter that due to may filter that the substrate of flue gas is densely covered with dust filtering air hole using described
The technological means of the catalyst for denitration is attached on the substrate of flue gas, so, which is placed in bag filter, in mistake
Catalytic denitration processing is carried out to industrial smoke again while filtering cigarette ash in industrial smoke, moreover, avoid land occupation problem, investment compared with
It is few, be conducive to the popularization and application of bag-type dust.The sheet stock can be directly used for the filter of the bag filters such as conventional garbage burning, cement kiln
On bag.It does not need individually to build SCR denitration device.The different numbers of plies can be installed in bag filter according to actual needs.
2, the technical program is due to may filter that the substrate of flue gas is woven fabric or looped fabric or non-woven cloth using described
Technological means, so, be conducive to the dust removal by filtration to flue gas.
3, the technical program is that fiber is passed through shredding mixing, combing networking, intersection due to using the non-woven cloth
Lapping, spun lacing, drying winding, calendering, singes, the technological means that may filter that the non-woven fabrics of flue gas is made after thermal finalization at pre-needling,
So manufacturing cost can be substantially reduced.
4, the technical program is that fiber is made up of shredding, combing, spinning, woven fabric can due to using the woven fabric
The technological means of the woven fabric of flue gas is filtered, so, intensity is high, is conducive to extend service life.
5, the technical program is that fiber is passed through shredding, combing, spinning, twisting, knitting due to using the looped fabric
The technological means that may filter that the looped fabric of flue gas is made, so, elasticity is good, is advantageous to the dust removal by filtration of flue gas；
6, technological means with a thickness of 1mm-3mm of the technical program due to using the substrate, so, not only favorably
In the dust removal by filtration to flue gas, moreover, also helping the service life for extending substrate.
7, technological means with a thickness of 1.5mm-2mm of the technical program due to using the substrate, so, to flue gas
Dust removal by filtration and the service life of substrate all have preferable effect.
8, the technical program includes polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) due to using the fiber
Fiber people's technological means, so, be conducive to the intensity, the corrosion resistance that improve substrate, extend the service life of substrate.The applicant
The preparation process and the denitration dust collecting performance after load of primary study polyphenylene sulfide (PPS) dedusting filtrate supported catalyst.It is first
Filter cloth is first impregnated by the PTFE emulsion containing active component using simplest direct dipping process, discusses preparation technology parameter,
It is best that the catalyst fines of 200 mesh of PTFE concentration lotion and particle size of mass concentration 4% prepare sample；Secondly the applicant
Also successfully using PTFE intumescent coating be prepared for simultaneously dedusting denitration filter cloth, choose non-ionic APG be foaming agent, and use just
Hand over test that the best preparation method of intumescent coating method has been determined: the concentration 8g/L of APG foaming agent, PTFE emulsion are mixed with foaming agent
Than being 2: 1, the concentration dosage of thickening stabilizing agent is HEC15g/L, HPMC0.5g/L, PVA5g/L, and foaming mixing time is
15min.Optimal foaming temperature is 30 DEG C, and the best baking mode of intumescent coating is preliminary drying 2min at a temperature of 80 DEG C, later 140
It carries out baking 5min at a temperature of DEG C.Finally, having investigated reaction temperature, filtering wind based on the filtrate of direct dipping process preparation
Speed, NH3/ NO and oxygen content, load capacity and SO2Influence to its denitration performance compared blank sample and finished product performance in all respects
The variation of index.The result shows that: load capacity 255g/m2When, the equal > of catalytic activity in 100 DEG C~200 DEG C temperature ranges
80%, and up to 91.2%.At 160 DEG C, it is individually passed through 300ppmSO2, activity is minimum to drop to 81% respectively.Filtrate preparation
Indices detection is qualified afterwards.
9, the technical program is due to using the polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber
Proportion be 60~70:40~30 technological means, so, can further improve intensity, the corrosion resistance of substrate, further prolong
The service life of long substrate.
10, the technical program is fine due to using the polyphenylene sulfide (PPS) fiber and the poly- four Buddhists ethylene (PTFE)
The proportion of dimension is the technological means of 65:35, so, intensity, the corrosion resistance of substrate can be further improved, is further extended
The service life of substrate.
11, the technical program is manganese based composite catalyst due to using the catalyst；The manganese based composite catalyst
It is that manganese-base oxide is mixed with nm-class catalyst powder；The nm-class catalyst powder contain cohesive material, manganese Mn,
The technological means of the elements such as cerium Ce, zirconium Zr, titanium Ti, iron Fe, copper Cu, so, it is greatly improved denitration efficiency.The applicant's investment
A large amount of human and material resources, financial resources, have carried out long-term practice, finally, are with Mn-Ce-Ox composite oxides denitrating catalyst
Basis mixes different one-component elements (carbon monoxide Co, iron Fe, lanthanum La, copper Cu, nickel, zirconium Zr), and it is more excellent to choose denitration activity
La, two kinds of metallic elements of Ni mix Mn-Ce-Ox simultaneously, have investigated the denitration performance and anti-SO of catalyst2Poisoning capability, and
It conducts in-depth analysis in conjunction with X-ray diffraction (XRD) to sample, result of study shows that when proportion be manganese Mn2.5-La2.5- cerium
When Ce-Ni-Ox, the incorporation of denitration activity ratio La, Ni one-component is high；It is passed through SO2After 4 hours, denitration efficiency keep 80% with
On, stop logical SO2After 2 hours, denitration efficiency restores to 90% or more；For a long time under the conditions of 140 DEG C, nitrogen oxidation after 91 days
Object removal efficiency still maintains 96% or more.
12, the technical program due to use the cohesive material be organic silicon modified polyurethane technological means, so,
It is greatly improved adhesive ability of the catalyst on substrate.
For method, in order to solve above-mentioned second technical problem, the present invention provides a kind of sheet stocks as previously described
Manufacturing method, steps are as follows:
First by polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber according to weight ratio 60~70:40~30
It is mixed, by shredding mixing, combing networking, cross lapping, pre-needling, spun lacing, drying winding, calendering, is singed, thermal finalization
The non-woven fabrics that may filter that flue gas is made afterwards；Alternatively, polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber are pressed first
It is mixed according to weight ratio 60~70:40~30, the woven fabric that may filter that flue gas is made up of shredding, combing, spinning, woven fabric；
Alternatively, polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber are carried out according to 60~70:40 of weight ratio~30 first
Mixing, the looped fabric that may filter that flue gas is made up of shredding, combing, spinning, twisting, knitting；
It may filter that the woven fabric of flue gas, the looped fabric that may filter that flue gas, may filter that the non-woven fabrics of flue gas is referred to as substrate；
Secondly the substrate partially prepared is immersed in the modified polyurethane solution containing 10-15% silicone content, is led to
Cross 20-30min dipping, through draining with 90-120 DEG C of drying 20-30min, sticky filtrate is made；
Third step, sticky filtrate and the salting liquid containing the elements different mol ratio such as Mn, Ce, Zr, Ti, Fe, Cu is washed,
Filtering, drying, grinding are prepared into nm-class catalyst powder；
The powder being prepared into, is stirred with water that be prepared into 0.04g/ml-0.1g/ml manganese-base oxide etc. first by the 4th step
Plain lotion；
5th step dips the substrate into manganese-base oxide lotion, and 10-20min is impregnated under the conditions of ultrasonic wave added, takes out base
Piece drains, and dries 2 hours at 90-110 DEG C, dries 20 hours at 180-200 DEG C, is made and is attached with manganese based composite catalyst
Integrate the sheet stock of dust removal by filtration and catalytic denitration.
The proportion of polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber is 65:35；
The substrate 1 with a thickness of 1mm-3mm；
The substrate 1 with a thickness of 1.5mm-2mm；
The solid content of the polyurethane solutions is 10%-18%；
Concentration of salt solution containing the elements different mol ratio such as Mn, Ce, Zr, Ti, Fe, Cu is 15%-25% concentration.
The manufacturing method of present invention sheet stock as previously described has the advantages that compared with prior art.
1, the technical program is due to using
First by polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber according to weight ratio 60~70:40~30
It is mixed, by shredding mixing, combing networking, cross lapping, pre-needling, spun lacing, drying winding, calendering, is singed, thermal finalization
The non-woven fabrics that may filter that flue gas is made afterwards；Alternatively, polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber are pressed first
It is mixed according to weight ratio 60~70:40~30, the woven fabric that may filter that flue gas is made up of shredding, combing, spinning, woven fabric；
Alternatively, polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber are carried out according to 60~70:40 of weight ratio~30 first
Mixing, the looped fabric that may filter that flue gas is made up of shredding, combing, spinning, twisting, knitting；
It may filter that the woven fabric of flue gas, the looped fabric that may filter that flue gas, may filter that the non-woven fabrics of flue gas is referred to as substrate；
Secondly the substrate partially prepared is immersed and contains the modified polyurethane solution containing 10-15% silicone content
In, impregnated by 20-30min, through draining with 90-120 DEG C of drying 20-30min, sticky filtrate is made；
Third step, sticky filtrate and the salting liquid containing the elements different mol ratio such as Mn, Ce, Zr, Ti, Fe, Cu is washed,
Filtering, drying, grinding are prepared into nm-class catalyst powder；
The powder being prepared into, is stirred with water that be prepared into 0.04g/ml-0.1g/ml manganese-base oxide etc. first by the 4th step
Plain lotion；
5th step dips the substrate into manganese-base oxide lotion, and 10-20min is impregnated under the conditions of ultrasonic wave added, takes out base
Piece drains, and dries 2 hours at 90-110 DEG C, dries 20 hours at 180-200 DEG C, is made and is attached with manganese based composite catalyst
Integrate the technological means of the sheet stock of dust removal by filtration and catalytic denitration, so, the sheet stock merging cloth bag manufactured with this method removes
In dirt device, catalytic denitration processing is carried out to industrial smoke again while cigarette ash in filtering industrial smoke, moreover, avoiding land occupation
Problem, investment is less, is conducive to the popularization and application of bag-type dust.
The applicant has put into a large amount of human and material resources, financial resources, has carried out long-term practice, finally, multiple with Mn-Ce-Ox
Based on closing oxide denitrating catalyst, different one-component element (carbon monoxide Co, iron Fe, lanthanum La, copper Cu, nickels, zirconium are mixed
Zr), denitration activity preferably La is chosen, two kinds of metallic elements of Ni mix Mn-Ce-Ox simultaneously, investigated the denitration of catalyst
It can be with anti-SO2Poisoning capability, and being conducted in-depth analysis to sample in conjunction with X-ray diffraction (XRD), result of study show when matching
When than for manganese Mn2.5-La2.5- cerium Ce-Ni-Ox, the incorporation of denitration activity ratio La, Ni one-component is high；It is passed through SO2After 4 hours,
Denitration efficiency keeps 80% or more, stops logical SO2After 2 hours, denitration efficiency restores to 90% or more；For a long time at 140 DEG C
Under the conditions of, removal of nitrogen oxide efficiency still maintains 96% or more after 91 days.
After the applicant's primary study preparation process and load of polyphenylene sulfide (PPS) dedusting filtrate supported catalyst
Denitration dust collecting performance.Filter cloth is impregnated by the PTFE emulsion containing active component using simplest direct dipping process first, is discussed
Preparation technology parameter, the catalyst fines of 200 mesh of PTFE concentration lotion and particle size of mass concentration 4% prepare sample most
It is good；Secondly the applicant is also successfully prepared for while dedusting denitration filter cloth using PTFE intumescent coating, and choosing non-ionic APG is
Foaming agent, and the best preparation method of intumescent coating method: the concentration 8g/L, PTFE of APG foaming agent has been determined using orthogonal test
Lotion and foaming agent mixing ratio are 2: 1, and the concentration dosage of thickening stabilizing agent is HEC15g/L, HPMC0.5g/L, PVA5g/L, hair
Bubble mixing time is 15min.Optimal foaming temperature is 30 DEG C, and the best baking mode of intumescent coating is preliminary drying at a temperature of 80 DEG C
2min carries out baking 5min later at a temperature of 140 DEG C.Finally, having been investigated anti-based on the filtrate of direct dipping process preparation
Answer temperature, filtration velocity, NH3/ NO and oxygen content, load capacity and SO2Influence to its denitration performance, compared blank sample at
The variation of product performance indicator in all respects.The result shows that: load capacity 255g/m2When, in 100 DEG C~200 DEG C temperature ranges
The equal > 80% of catalytic activity, and up to 91.2%.At 160 DEG C, it is individually passed through 300ppmSO2, activity is minimum to be dropped to respectively
81%.Indices detection is qualified after filtrate preparation.
2, the technical program is due to using the polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber
Proportion be 65:35 technological means, so, can further improve intensity, the corrosion resistance of substrate, further extension base
The service life of piece.
3, technological means with a thickness of 1mm-3mm of the technical program due to using the substrate 1, so, not only have
Conducive to the dust removal by filtration to flue gas, moreover, also helping the service life for extending substrate.
4, technological means with a thickness of 1.5mm-2mm of the technical program due to using the substrate 1, so, to cigarette
The dust removal by filtration of gas and the service life of substrate all have preferable effect.
5, the technical program is due to using the solid content of the polyurethane solutions as 10%-18%；Containing Mn, Ce, Zr,
The concentration of salt solution of the elements different mol ratio such as Ti, Fe, Cu is the technological means of 15%-25% concentration, so, it is greatly improved
The denitration efficiency of sheet stock.
Detailed description of the invention
With reference to the accompanying drawings and detailed description to the sheet stock for integrating dust removal by filtration and catalytic denitration of the invention
And its manufacturing method is described in further detail.
Fig. 1 is the structural schematic diagram for the sheet stock that the present invention integrates dust removal by filtration and catalytic denitration.
The reference numerals are as follows.
1, substrate；
2, catalyst；
3, dust filtering air hole.
Specific embodiment
As shown in Figure 1, present embodiments provide for a kind of sheet stocks for integrating dust removal by filtration and catalytic denitration, including can
The substrate 1 of flue gas is filtered, the substrate 1 that may filter that flue gas is densely covered with dust filtering air hole 3, the substrate 1 that may filter that flue gas
On be attached with catalyst 2 for denitration.
Present embodiment is described to may filter that cigarette due to may filter that the substrate of flue gas is densely covered with dust filtering air hole using described
The technological means of the catalyst for denitration is attached on the substrate of gas, so, which is placed in bag filter, is filtering
Catalytic denitration processing is carried out to industrial smoke again while cigarette ash in industrial smoke, moreover, avoid land occupation problem, investment compared with
It is few, be conducive to the popularization and application of bag-type dust.The sheet stock can be directly used for the filter of the bag filters such as conventional garbage burning, cement kiln
On bag.It does not need individually to build SCR denitration device.The different numbers of plies can be installed in bag filter according to actual needs.
As the various improvement of present embodiment, details are as follows.
As shown in Figure 1, the substrate 1 that may filter that flue gas is woven fabric or looped fabric or non-woven cloth.
Present embodiment is due to may filter that the substrate of flue gas is woven fabric or looped fabric or non-woven cloth using described
Technological means, so, be conducive to the dust removal by filtration to flue gas.
As shown in Figure 1, the non-woven cloth be by fiber by shredding mix, combing networking, cross lapping, pre-needling,
Spun lacing, calendering, singes, the non-woven fabrics that may filter that flue gas is made after thermal finalization at drying winding.
Present embodiment is to spread fiber by shredding mixing, combing networking, intersection due to using the non-woven cloth
Net, spun lacing, drying winding, calendering, singes, the technological means that may filter that the non-woven fabrics of flue gas, institute is made after thermal finalization at pre-needling
Manufacturing cost can be substantially reduced.
As shown in Figure 1, the woven fabric is that fiber is made up to the machine that may filter that flue gas of shredding, combing, spinning, woven fabric
Woven fabric.
Present embodiment is that fiber is made up of shredding, combing, spinning, woven fabric can mistake due to using the woven fabric
The technological means of the woven fabric of flue gas is filtered, so, intensity is high, is conducive to extend service life.
As shown in Figure 1, the looped fabric is that fiber is made up to may filter that cigarette of shredding, combing, spinning, twisting, knitting
The looped fabric of gas.
Present embodiment is that fiber is passed through shredding, combing, spinning, twisting, knitting system due to using the looped fabric
At the technological means for the looped fabric that may filter that flue gas, so, elasticity is good, is advantageous to the dust removal by filtration of flue gas；
As shown in Figure 1, the substrate 1 with a thickness of 1mm-3mm.
Technological means with a thickness of 1mm-3mm of the present embodiment due to using the substrate, so, it is not only advantageous to
To the dust removal by filtration of flue gas, moreover, also helping the service life for extending substrate.
As shown in Figure 1, the substrate 1 with a thickness of 1.5mm-2mm.
Technological means with a thickness of 1.5mm-2mm of the present embodiment due to using the substrate, so, to flue gas
Dust removal by filtration and the service life of substrate all have preferable effect.
As shown in Figure 1, the fiber includes polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber.
Present embodiment includes that polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) are fine due to using the fiber
People's technological means is tieed up, so, be conducive to the intensity, the corrosion resistance that improve substrate, extend the service life of substrate.The applicant's weight
The preparation process and the denitration dust collecting performance after load that point has studied polyphenylene sulfide (PPS) dedusting filtrate supported catalyst.First
Filter cloth is impregnated by the PTFE emulsion containing active component using simplest direct dipping process, discusses preparation technology parameter, matter
It is best that the catalyst fines of 200 mesh of PTFE concentration lotion and particle size of amount concentration 4% prepare sample；Secondly the applicant goes back
Success is prepared for using PTFE intumescent coating while dedusting denitration filter cloth, and choosing non-ionic APG is foaming agent, and using orthogonal
Test has determined the best preparation method of intumescent coating method: the concentration 8g/L of APG foaming agent, PTFE emulsion and foaming agent mixing ratio
It is 2: 1, the concentration dosage of thickening stabilizing agent is HEC15g/L, HPMC0.5g/L, PVA5g/L, and foaming mixing time is 15min.
Optimal foaming temperature is 30 DEG C, and the best baking mode of intumescent coating is preliminary drying 2min at a temperature of 80 DEG C, later in 140 DEG C of temperature
Under carry out baking 5min.Finally, having investigated reaction temperature, filtration velocity, NH based on the filtrate of direct dipping process preparation3/
NO and oxygen content, load capacity and SO2Influence to its denitration performance compared blank sample and finished product performance indicator in all respects
Variation.The result shows that: load capacity 255g/m2When, the equal > 80% of catalytic activity in 100 DEG C~200 DEG C temperature ranges, and most
A height of 91.2%.At 160 DEG C, it is individually passed through 300ppmSO2, activity is minimum to drop to 81% respectively.Items refer to after filtrate preparation
Mark detection is qualified.
As shown in Figure 1, the proportion of polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber be 60~
70:40~30.
Present embodiment is due to using the polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber
Proportion is the technological means of 60~70:40~30, so, it can further improve intensity, the corrosion resistance of substrate, further extend
The service life of substrate.
As shown in Figure 1, the proportion of polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber is 65:
35。
Present embodiment is due to using the polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber
Proportion is the technological means of 65:35, so, intensity, the corrosion resistance of substrate can be further improved, further extension substrate
Service life.
As shown in Figure 1, the catalyst 2 is manganese based composite catalyst.
The manganese based composite catalyst is that manganese-base oxide is mixed with nm-class catalyst powder.
The nm-class catalyst powder contains the elements such as cohesive material, manganese Mn, cerium Ce, zirconium Zr, titanium Ti, iron Fe, copper Cu.
Present embodiment is manganese based composite catalyst due to using the catalyst；The manganese based composite catalyst is manganese
Base oxide is mixed with nm-class catalyst powder；The nm-class catalyst powder contains cohesive material, manganese Mn, cerium
The technological means of the elements such as Ce, zirconium Zr, titanium Ti, iron Fe, copper Cu, so, it is greatly improved denitration efficiency.The applicant puts into
A large amount of human and material resources, financial resources, have carried out long-term practice, finally, using Mn-Ce-Ox composite oxides denitrating catalyst as base
Plinth mixes different one-component elements (carbon monoxide Co, iron Fe, lanthanum La, copper Cu, nickel, zirconium Zr), chooses denitration activity preferably
Two kinds of metallic elements of La, Ni mix Mn-Ce-Ox simultaneously, have investigated the denitration performance and anti-SO of catalyst2Poisoning capability, and tie
It closes X-ray diffraction (XRD) to conduct in-depth analysis to sample, result of study shows that when proportion be manganese Mn2.5-La2.5- cerium Ce-
When Ni-Ox, the incorporation of denitration activity ratio La, Ni one-component is high；It is passed through SO2After 4 hours, denitration efficiency keeps 80% or more,
Stop logical SO2After 2 hours, denitration efficiency restores to 90% or more；For a long time under the conditions of 140 DEG C, nitrogen oxides after 91 days
Removal efficiency still maintains 96% or more.
As shown in Figure 1, the cohesive material is organic silicon modified polyurethane.
Present embodiment due to use the cohesive material be organic silicon modified polyurethane technological means, so, can
Greatly improve adhesive ability of the catalyst on substrate.
As shown in Figure 1, steps are as follows present embodiments provide for a kind of manufacturing method of sheet stock as previously described:
First by polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber according to weight ratio 60~70:40~30
It is mixed, by shredding mixing, combing networking, cross lapping, pre-needling, spun lacing, drying winding, calendering, is singed, thermal finalization
The non-woven fabrics that may filter that flue gas is made afterwards；Alternatively, polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber are pressed first
It is mixed according to weight ratio 60~70:40~30, the woven fabric that may filter that flue gas is made up of shredding, combing, spinning, woven fabric；
Alternatively, polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber are carried out according to 60~70:40 of weight ratio~30 first
Mixing, the looped fabric that may filter that flue gas is made up of shredding, combing, spinning, twisting, knitting；
It may filter that the woven fabric of flue gas, the looped fabric that may filter that flue gas, may filter that the non-woven fabrics of flue gas is referred to as substrate 1；
Secondly the substrate 1 partially prepared is immersed and contains the modified polyurethane solution containing 10-15% silicone content
In, impregnated by 20-30min, through draining with 90-120 DEG C of drying 20-30min, sticky filtrate is made；
Third step, sticky filtrate and the salting liquid containing the elements different mol ratio such as Mn, Ce, Zr, Ti, Fe, Cu is washed,
Filtering, drying, grinding are prepared into nm-class catalyst powder；
The powder being prepared into, is stirred with water that be prepared into 0.04g/ml-0.1g/ml manganese-base oxide etc. first by the 4th step
Plain lotion；
Substrate 1 is immersed manganese-base oxide lotion, 10-20min is impregnated under the conditions of ultrasonic wave added, takes out base by the 5th step
Piece 1, drains, and dries 2 hours at 90-110 DEG C, dries 20 hours at 180-200 DEG C, is made and is attached with manganese based composite catalyst
Integrate the sheet stock of dust removal by filtration and catalytic denitration.
Present embodiment is due to using
First by polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber according to weight ratio 60~70:40~30
It is mixed, by shredding mixing, combing networking, cross lapping, pre-needling, spun lacing, drying winding, calendering, is singed, thermal finalization
The non-woven fabrics that may filter that flue gas is made afterwards；Alternatively, polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber are pressed first
It is mixed according to weight ratio 60~70:40~30, the woven fabric that may filter that flue gas is made up of shredding, combing, spinning, woven fabric；
Alternatively, polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber are carried out according to 60~70:40 of weight ratio~30 first
Mixing, the looped fabric that may filter that flue gas is made up of shredding, combing, spinning, twisting, knitting；
It may filter that the woven fabric of flue gas, the looped fabric that may filter that flue gas, may filter that the non-woven fabrics of flue gas is referred to as substrate；
Secondly the substrate partially prepared is immersed in the modified polyurethane solution containing 10-15% silicone content, is led to
Cross 20-30min dipping, through draining with 90-120 DEG C of drying 20-30min, sticky filtrate is made；
Third step, sticky filtrate and the salting liquid containing the elements different mol ratio such as Mn, Ce, Zr, Ti, Fe, Cu is washed,
Filtering, drying, grinding are prepared into nm-class catalyst powder；
The powder being prepared into, is stirred with water that be prepared into 0.04g/ml-0.1g/ml manganese-base oxide etc. first by the 4th step
Plain lotion；
5th step dips the substrate into manganese-base oxide lotion, and 10-20min is impregnated under the conditions of ultrasonic wave added, takes out base
Piece drains, and dries 2 hours at 90-110 DEG C, dries 20 hours at 180-200 DEG C, is made and is attached with manganese based composite catalyst
Integrate the technological means of the sheet stock of dust removal by filtration and catalytic denitration, so, the sheet stock merging cloth bag manufactured with this method removes
In dirt device, catalytic denitration processing is carried out to industrial smoke again while cigarette ash in filtering industrial smoke, moreover, avoiding land occupation
Problem, investment is less, is conducive to the popularization and application of bag-type dust.
The applicant has put into a large amount of human and material resources, financial resources, has carried out long-term practice, finally, multiple with Mn-Ce-Ox
Based on closing oxide denitrating catalyst, different one-component element (carbon monoxide Co, iron Fe, lanthanum La, copper Cu, nickels, zirconium are mixed
Zr), denitration activity preferably La is chosen, two kinds of metallic elements of Ni mix Mn-Ce-Ox simultaneously, investigated the denitration of catalyst
It can be with anti-SO2Poisoning capability, and being conducted in-depth analysis to sample in conjunction with X-ray diffraction (XRD), result of study show when matching
When than for manganese Mn2.5-La2.5- cerium Ce-Ni-Ox, the incorporation of denitration activity ratio La, Ni one-component is high；It is passed through SO2After 4 hours,
Denitration efficiency keeps 80% or more, stops logical SO2After 2 hours, denitration efficiency restores to 90% or more；For a long time at 140 DEG C
Under the conditions of, removal of nitrogen oxide efficiency still maintains 96% or more after 91 days.
After the applicant's primary study preparation process and load of polyphenylene sulfide (PPS) dedusting filtrate supported catalyst
Denitration dust collecting performance.Filter cloth is impregnated by the PTFE emulsion containing active component using simplest direct dipping process first, is discussed
Preparation technology parameter, the catalyst fines of 200 mesh of PTFE concentration lotion and particle size of mass concentration 4% prepare sample most
It is good；Secondly the applicant is also successfully prepared for while dedusting denitration filter cloth using PTFE intumescent coating, and choosing non-ionic APG is
Foaming agent, and the best preparation method of intumescent coating method: the concentration 8g/L, PTFE of APG foaming agent has been determined using orthogonal test
Lotion and foaming agent mixing ratio are 2: 1, and the concentration dosage of thickening stabilizing agent is HEC15g/L, HPMC0.5g/L, PVA5g/L, hair
Bubble mixing time is 15min.Optimal foaming temperature is 30 DEG C, and the best baking mode of intumescent coating is preliminary drying at a temperature of 80 DEG C
2min carries out baking 5min later at a temperature of 140 DEG C.Finally, having been investigated anti-based on the filtrate of direct dipping process preparation
Answer temperature, filtration velocity, NH3/ NO and oxygen content, load capacity and SO2Influence to its denitration performance, compared blank sample at
The variation of product performance indicator in all respects.The result shows that: load capacity 255g/m2When, in 100 DEG C~200 DEG C temperature ranges
The equal > 80% of catalytic activity, and up to 91.2%.At 160 DEG C, it is individually passed through 300ppmSO2, activity is minimum to be dropped to respectively
81%.Indices detection is qualified after filtrate preparation.
As the various improvement of present embodiment, details are as follows.
As shown in Figure 1, the proportion of polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber is 65:
35。
Present embodiment is due to using the polyphenylene sulfide (PPS) fiber and poly- four Buddhists ethylene (PTFE) fiber
Proportion is the technological means of 65:35, so, intensity, the corrosion resistance of substrate can be further improved, further extension substrate
Service life.
As shown in Figure 1, the substrate 1 with a thickness of 1mm-3mm.
Technological means with a thickness of 1mm-3mm of the present embodiment due to using the substrate 1, so, not only favorably
In the dust removal by filtration to flue gas, moreover, also helping the service life for extending substrate.
As shown in Figure 1, the substrate 1 with a thickness of 1.5mm-2mm.
Technological means with a thickness of 1.5mm-2mm of the present embodiment due to using the substrate 1, so, to flue gas
Dust removal by filtration and the service life of substrate all have preferable effect.
As shown in Figure 1, the solid content of the polyurethane solutions is 10%-18%.
Concentration of salt solution containing the elements different mol ratio such as Mn, Ce, Zr, Ti, Fe, Cu is 15%-25% concentration.
Present embodiment is due to using the solid content of the polyurethane solutions as 10%-18%；Containing Mn, Ce, Zr, Ti,
The concentration of salt solution of the elements different mol ratio such as Fe, Cu is the technological means of 15%-25% concentration, so, it is greatly improved piece
The denitration efficiency of material.
Claims (4)
1. a kind of sheet stock for integrating dust removal by filtration and catalytic denitration, it is characterised in that: the substrate including may filter that flue gas
(1), the substrate (1) that may filter that flue gas is densely covered with dust filtering air hole (3), is adhered on the substrate (1) that may filter that flue gas
There is the catalyst (2) for denitration.
2. integrating the sheet stock of dust removal by filtration and catalytic denitration according to claim 1, it is characterised in that:
The substrate (1) that may filter that flue gas is woven fabric or looped fabric or non-woven cloth；
The non-woven cloth be by fiber by shredding mix, combing networking, cross lapping, pre-needling, spun lacing, drying winding,
Calendering singes, the non-woven fabrics that may filter that flue gas is made after thermal finalization；
The woven fabric is that fiber is made up to the woven fabric that may filter that flue gas of shredding, combing, spinning, woven fabric；
The looped fabric is that fiber is made up to the looped fabric that may filter that flue gas of shredding, combing, spinning, twisting, knitting；
The substrate (1) with a thickness of 1mm-3mm；
The fiber includes polyphenylene sulfide fibre and poly- four Buddhists vinyl fiber；
The proportion of the polyphenylene sulfide fibre and the poly- four Buddhists vinyl fiber is 60~70:40~30；
The catalyst (2) is manganese based composite catalyst；
The manganese based composite catalyst is that manganese-base oxide is mixed with nm-class catalyst powder；
The nm-class catalyst powder contains cohesive material, manganese, cerium, zirconium, titanium, iron, copper；
The cohesive material is organic silicon modified polyurethane.
3. a kind of manufacturing method of sheet stock as claimed in claim 1 or 2, it is characterised in that:
Polyphenylene sulfide fibre and poly- four Buddhists vinyl fiber are mixed according to weight ratio 60~70:40~30 first, by opening
Pine mixing, cross lapping, pre-needling, spun lacing, drying winding, calendering, singes, is made after thermal finalization and may filter that cigarette at combing networking
The non-woven fabrics of gas；Alternatively, polyphenylene sulfide fibre and poly- four Buddhists vinyl fiber are carried out according to 60~70:40 of weight ratio~30 first
Mixing, the woven fabric that may filter that flue gas is made up of shredding, combing, spinning, woven fabric；Alternatively, first by polyphenylene sulfide fibre and
Poly- four Buddhists vinyl fiber is mixed according to weight ratio 60~70:40~30, is made by shredding, combing, spinning, twisting, knitting
At the looped fabric that may filter that flue gas；
It may filter that the woven fabric of flue gas, the looped fabric that may filter that flue gas, may filter that the non-woven fabrics of flue gas is referred to as substrate (1)；
Secondly the substrate partially prepared (1) is immersed and is contained in the modified polyurethane solution containing 10-15% silicone content,
Impregnated by 20-30min, through draining with 90-120 DEG C of drying 20-30min, sticky filtrate is made；
Third step, by sticky filtrate with containing manganese, cerium, zirconium, titanium, iron, the salting liquid of copper different mol ratio be washed, filtering,
Drying, grinding are prepared into nm-class catalyst powder；
The powder being prepared into and water are stirred and are prepared into 0.04g/ml-0.1g/ml manganese-base oxide element cream by the 4th step
Liquid；
Substrate (1) is immersed manganese-base oxide lotion, 10-20min is impregnated under the conditions of ultrasonic wave added, take out substrate by the 5th step
(1), it drains, is dried 2 hours at 90-110 DEG C, dried 20 hours at 180-200 DEG C, be made and be attached with manganese based composite catalyst
Integrate the sheet stock of dust removal by filtration and catalytic denitration.
4. the manufacturing method of sheet stock according to claim 3, it is characterised in that:
The proportion of the polyphenylene sulfide fibre and the poly- four Buddhists vinyl fiber is 65:35；
The substrate (1) with a thickness of 1mm-3mm；
The solid content of the polyurethane solutions is 10%-18%；
Concentration of salt solution containing manganese, cerium, zirconium, titanium, iron, copper different mol ratio is 15%-25% concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811355252.0A CN109289330B (en) | 2018-11-14 | 2018-11-14 | Sheet material integrating filtering, dust removal and catalytic denitration and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811355252.0A CN109289330B (en) | 2018-11-14 | 2018-11-14 | Sheet material integrating filtering, dust removal and catalytic denitration and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109289330A true CN109289330A (en) | 2019-02-01 |
| CN109289330B CN109289330B (en) | 2021-05-04 |
Family
ID=65144045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811355252.0A Active CN109289330B (en) | 2018-11-14 | 2018-11-14 | Sheet material integrating filtering, dust removal and catalytic denitration and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109289330B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110898829A (en) * | 2019-07-24 | 2020-03-24 | 南京工业大学 | Composite filter material with synergistic removal function of nitrogen oxides and dioxins and preparation method thereof |
| CN113042101A (en) * | 2021-03-25 | 2021-06-29 | 福州大学 | Modified filter material with low-temperature SCR activity and preparation method thereof |
| CN114471104A (en) * | 2022-03-09 | 2022-05-13 | 清源创新实验室 | Flue gas full-working-condition dry desulfurization and catalytic filter bag dust removal-SCR denitration system and method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020139746A1 (en) * | 1998-08-27 | 2002-10-03 | Evan E. Koslow | Composite filter medium and fluid filters containing same |
| WO2005009589A1 (en) * | 2003-07-18 | 2005-02-03 | Koslow Technologies Corporation | Carbon or activated carbon nanofibers |
| US20080053922A1 (en) * | 2006-09-01 | 2008-03-06 | Honsinger Charles P Jr | Nanostructured materials comprising support fibers coated with metal containing compounds and methods of using the same |
| CN101862567A (en) * | 2010-07-01 | 2010-10-20 | 张延青 | High-temperature resistant fiber layer composite filter material and method for preparing same |
| CN103127930A (en) * | 2013-03-13 | 2013-06-05 | 国电环境保护研究院 | High-activity nano-grade flue gas denitrification catalyst and low-temperature liquid-phase preparation method thereof |
| CN103816918A (en) * | 2014-03-21 | 2014-05-28 | 中国科学院上海硅酸盐研究所 | Weak-crystallization nanometer manganese oxide base adsorbing/catalyzing agent and preparation method thereof |
| CN104941319A (en) * | 2015-06-19 | 2015-09-30 | 合肥工业大学 | Method for preparing manganese-base dedusting and denitration integration function filter material |
| CN105521659A (en) * | 2016-03-11 | 2016-04-27 | 安徽省元琛环保科技有限公司 | Modified filter material with low-and-medium-temperature SCR denitration activity and preparation method thereof |
| US20160296911A1 (en) * | 2013-12-09 | 2016-10-13 | BLüCHER GMBH | Catalyst system based on spherical activated carbon as a carrier and use thereof |
-
2018
- 2018-11-14 CN CN201811355252.0A patent/CN109289330B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020139746A1 (en) * | 1998-08-27 | 2002-10-03 | Evan E. Koslow | Composite filter medium and fluid filters containing same |
| WO2005009589A1 (en) * | 2003-07-18 | 2005-02-03 | Koslow Technologies Corporation | Carbon or activated carbon nanofibers |
| US20080053922A1 (en) * | 2006-09-01 | 2008-03-06 | Honsinger Charles P Jr | Nanostructured materials comprising support fibers coated with metal containing compounds and methods of using the same |
| CN101862567A (en) * | 2010-07-01 | 2010-10-20 | 张延青 | High-temperature resistant fiber layer composite filter material and method for preparing same |
| CN103127930A (en) * | 2013-03-13 | 2013-06-05 | 国电环境保护研究院 | High-activity nano-grade flue gas denitrification catalyst and low-temperature liquid-phase preparation method thereof |
| US20160296911A1 (en) * | 2013-12-09 | 2016-10-13 | BLüCHER GMBH | Catalyst system based on spherical activated carbon as a carrier and use thereof |
| CN103816918A (en) * | 2014-03-21 | 2014-05-28 | 中国科学院上海硅酸盐研究所 | Weak-crystallization nanometer manganese oxide base adsorbing/catalyzing agent and preparation method thereof |
| CN104941319A (en) * | 2015-06-19 | 2015-09-30 | 合肥工业大学 | Method for preparing manganese-base dedusting and denitration integration function filter material |
| CN105521659A (en) * | 2016-03-11 | 2016-04-27 | 安徽省元琛环保科技有限公司 | Modified filter material with low-and-medium-temperature SCR denitration activity and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110898829A (en) * | 2019-07-24 | 2020-03-24 | 南京工业大学 | Composite filter material with synergistic removal function of nitrogen oxides and dioxins and preparation method thereof |
| CN113042101A (en) * | 2021-03-25 | 2021-06-29 | 福州大学 | Modified filter material with low-temperature SCR activity and preparation method thereof |
| CN114471104A (en) * | 2022-03-09 | 2022-05-13 | 清源创新实验室 | Flue gas full-working-condition dry desulfurization and catalytic filter bag dust removal-SCR denitration system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109289330B (en) | 2021-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109289330A (en) | A kind of sheet stock and its manufacturing method integrating dust removal by filtration and catalytic denitration | |
| CN105056923B (en) | A kind of water resistant sulfur resistive type denitrating catalyst, preparation method and its usage | |
| CN102764645B (en) | SCR (selective catalytic reduction) nitrogen oxide catalyst, and preparation method and application thereof | |
| CN109513438A (en) | Environment-friendly high-temperature denitration catalyst and preparation method thereof | |
| WO2008150462A2 (en) | Catalyst for selective reduction of nitrogen oxides, method for making same and use thereof | |
| CN103801154B (en) | Catalytic filtering material with TiO2 thin film protective layer and preparation method for catalytic filtering material | |
| CN112742413A (en) | Low-temperature SCR denitration catalyst and preparation method and application thereof | |
| CN105597817A (en) | Low-temperature SCR (selective catalytic reduction) flue gas denitrification catalyst containing MnOx/SAPO-11 as well as preparation method and application of catalyst | |
| CN102000585A (en) | Denitration catalyst and preparation method thereof | |
| CN108187661A (en) | A kind of high temperature SCR denitration with anti-high concentration K poisoning performances and preparation method thereof | |
| CN102512950B (en) | Method for simultaneously removing submicron particles and nitrogen oxides (NOx) in coal-fired flue gas | |
| CN102698740A (en) | Bag-type NOx removal catalyst and preparation method thereof | |
| CN107930619B (en) | A kind of porous spongy CrMnOXThe preparation of/aluminosilicate fiber cotton low-temperature denitration of flue gas catalyst | |
| CN113385188B (en) | Integral cDPF composite material for diesel vehicle and preparation method thereof | |
| CN106925034B (en) | A kind of preparation method of denitration function polyphenylene sulfide composite filtering material | |
| CN104226296A (en) | Vanadium-loaded middle-temperature SCR catalyst and preparation method thereof | |
| JP4582475B2 (en) | Felt manufacturing method | |
| CN107308969A (en) | Reduce SO2Oxidation rate honeycomb type vanadium-free denitration catalyst and preparation method thereof | |
| CN107175121A (en) | Reduce SO2Oxidation rate abrasion-resistant honeycomb type denitration catalyst and preparation method thereof | |
| CN107321344B (en) | Honeycomb denitration catalyst with improved specific surface area and preparation method thereof | |
| JP2002331212A (en) | Dedusting deodorizing filter | |
| CN107913695B (en) | Heavy metal deposition-resistant denitration catalyst and preparation method thereof | |
| CN109731568A (en) | Ceria-based denitration catalyst and preparation method thereof, application | |
| CN107321343A (en) | Vanadium-free denitration catalyst and preparation method thereof | |
| CN114130118A (en) | Preparation method and application of three-in-one filtering material for denitration, dioxin removal and dust removal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |