CN107890706A - A kind of composite filtering material for loading hollow structure denitration sulfur resistant catalyst and preparation method thereof - Google Patents

A kind of composite filtering material for loading hollow structure denitration sulfur resistant catalyst and preparation method thereof Download PDF

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CN107890706A
CN107890706A CN201711164422.2A CN201711164422A CN107890706A CN 107890706 A CN107890706 A CN 107890706A CN 201711164422 A CN201711164422 A CN 201711164422A CN 107890706 A CN107890706 A CN 107890706A
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hollow structure
filtering material
resistant catalyst
composite filtering
sulfur resistant
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郑玉婴
付彬彬
朱建风
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Fuzhou University
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    • 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
    • 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
    • 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
    • B01D53/88—Handling or mounting catalysts
    • 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
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1291—Other parameters
    • 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
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20746—Cobalt

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

The invention discloses a kind of composite filtering material for loading hollow structure denitration sulfur resistant catalyst and preparation method thereof, it is specially：Using PPS Nomexs as filtrate, surface preparation is first carried out to acupuncture lacing felt filter material using sodium lignin sulfonate, filter media fibre surface is coated on by the pi-conjugated mechanism of action of π, add afterwards and remove hollow structure denitration sulfur resistant catalyst prepared by template, adsorbed by lignin electrostatic interaction, the composite filtering material with NO_x Reduction by Effective sulfur resistive function is made.The method has that preparation technology is simple, environment-friendly, low production cost；The hollow structure catalyst low-temperature activity of preparation is excellent, and lignin provides various active group, the stable and firm adsorption catalyst of energy, obtained function and service filtrate has excellent denitration effect to the nitrogen oxides in flue gas, also there is very strong sulfur resistive function simultaneously, can solve the shortcomings of complicated and high cost of afterbody cleaning system in the prior art.

Description

A kind of composite filtering material for loading hollow structure denitration sulfur resistant catalyst and preparation method thereof
Technical field
The invention belongs to feature composite filtering material technical field, and in particular to be urged to one kind load hollow structure denitration sulfur resistive Composite filtering material of agent and preparation method thereof.
Background technology
China is in the rapid economic development stage, and demand for energy is very big, and especially the demand to electric power is even more to have increasing Nothing subtracts.And the energy resource structure that China is the theme with coal, China's electric power is determined based on firepower thermoelectricity, and power plant is largely combustion Coal-fired plant.Coal-burning power plant can produce substantial amounts of pollutant in addition to ensureing rapid economic development, as dust, sulfur dioxide and NOxToxic gas etc..Nitrogen oxides（NOx）As main atmosphere pollution, it can cause haze, photochemical fog, ozone layer Destruction and a series of human health problems.The improvement industrial source NO that current application is most extensive, technology is most ripexTechnology be with ammonia Gas NH3For the selective catalytic reduction (SCR) of reducing agent.SCR technology removes NOxCore be catalyst, current commercial vanadium titanium Catalyst V2O5/TiO2Superior in middle-temperature section (300 ~ 400 DEG C) catalytic performance, the temperature section is that denitration device is placed in into desulfurization to remove Before dirt device, therefore the catalyst is in high ash quantity and high SO2Easily inactivated under environment；Preferable denitrating technique is to take off SCR Nitre equipment is placed in after desulphurization plant and dust arrester, but flue-gas temperature now can be reduced to less than 200 DEG C, in order to avoid Middle temperature catalyst needs to reheat flue gas waste energy consumption, and exploitation is efficient and adapts to urging for low temperature active window (80 ~ 200 DEG C) Agent has very important significance.
At present, it is industrial mainly using a large amount of dust and micro particle caused by bag dust collector control coal-fired power station boiler Thing, its core are filtrates.Wherein, polyphenyl thioether filter material is because it is with stable chemical constitution, acid-alkali-corrosive-resisting, hydrolytic resistance And the advantages that dimensional stability, turn into the preferred material on coal-burning power plant's filter bag.
Sodium lignin sulfonate is a kind of natural polymerses, anionic surfactant.Disperse with very strong Ability, suitable for solid is dispersed in aqueous medium.There is different degrees of dispersiveness due to the difference of molecular weight and functional group, It can adsorb on the surface of various solid particles, metal ion exchanged effect can be carried out, also because existing in its institutional framework each Kind active group, thus condensation can be produced or hydrogen bond action occurs with other compounds.Industrially, sodium lignin sulfonate is wide It is used as dispersant and wetting agent generally.
Discharge of the bag dust collector to the nitrogen oxides in industrial tail gas, also without effective control method.Therefore, study A kind of complex function filtrate that can be provided simultaneously with dedusting and denitration sulfur resistive function, have become the heat of numerous researcher's concerns Point.Hollow structure denitration sulfur resistant catalyst is loaded by lignin Electrostatic Absorption in filter material surface, there is simple to operate, denitration rate The advantages that height, resistance to SO_2 are good, catalyst Load Balanced, thus have broad application prospects.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of load hollow structure denitration sulfur resistant catalyst Composite filtering material and preparation method thereof.The present invention is by the way that efficient hollow structure denitration sulfur resistant catalyst is led to polyphenyl thioether filter material The mode for crossing lignin Electrostatic Absorption is combined, and hollow structure denitration sulfur resistant catalyst is uniform and is supported on polyphenylene sulfide securely Ether filter material surface, and there are various active groups in lignin, can cooperate with increase filter material surface activity in itself.
To achieve the above object, the technical solution adopted by the present invention is：
The present invention basic ideas be：Using PPS Nomexs as filtrate, table is first carried out to acupuncture lacing felt filter material using sodium lignin sulfonate Face is pre-processed, and filter media fibre surface is coated on by π-πconjugation mechanism, adds remove hollow knot made from template afterwards Structure denitration sulfur resistant catalyst, is adsorbed by lignin electrostatic interaction, and the composite filtering material with NO_x Reduction by Effective sulfur resistive function is made.Wood The processing of quality sodium sulfonate, the bond strength of catalyst and filtrate is on the one hand enhanced, make filtrate that there is good denitration effect； On the other hand, the addition of sodium lignin sulfonate will also increase the surface-active of filtrate, and such as anti-to a series of performances of filtrate Tensile strength, corrosion-resistant, to molecule strainability etc. are also improved.
Specifically, a kind of composite filtering material for loading hollow structure denitration sulfur resistant catalyst, is using polyphenyl thioether filter material as load Body, after sodium lignin sulfonate is handled, obtain modified support；Then hollow structure denitration sulfur resistant catalyst is passed through into sulfomethylated lignin The composite filtering material with denitration sulfur resistive function is made on modified support in sour sodium electrostatic interaction absorption carriage.
Described hollow structure denitration sulfur resistant catalyst, is using polystyrene microsphere as template, passes through surfactant pair Polystyrene microsphere is modified, and manganese cobalt/cobalt oxide is generated on polystyrene microsphere using coprecipitation, then by high temperature or Person's dissolution method removes polyethylene template and obtains denitration sulfur resistant catalyst.
The molecular weight of described sodium lignin sulfonate is 10000-30000, can be adsorbed on the surface of various solid particles, And various active groups in its institutional framework be present, increase filter material surface activity；It is and strong to a series of performances such as tension of filtrate Degree, corrosion-resistant, to molecule strainability etc. are also improved.
Described polyphenyl thioether filter material is using polyphenylene sulfide fibre as raw material, through shredding, compound batch mixing, combing, lapping, pin Thorn, thermal finalization and press polish of singing are prepared, and average pore size is 37 μm.
A kind of method for the composite filtering material for preparing load hollow structure denitration sulfur resistant catalyst as described above, including it is following Step：
1）0.1g sodium lignin sulfonates are added to stirring and dissolving in 50mL deionized waters, are made into lignin sulfonic acid sodium solution；
2）0.6g polyphenyl thioether filter materials are added in gained lignin sulfonic acid sodium solution, 2h is ultrasonically treated, makes lignin sulfonic acid Sodium is fully coated on filter media fibre surface by π-πconjugation mechanism；
3）The hollow structure denitration sulfur resistant catalyst that 0.2g is removed to template preparation adds ultrasonic dissolution in ethanol, is made into suspension Liquid；
4）By step 2）The filtrate of pretreatment gained, which takes out, is put into step 3）In gained suspension, filtrate just submerges, ultrasound Processing, lignin Electrostatic Absorption 2 ~ 6 hours；
5）Reaction takes out polyphenyl thioether filter material after terminating, with deionized water and ethanol that its surface clean is clean, then at 105 DEG C 8 ~ 12h is dried in baking oven, that is, area load, which is made, the composite filtering material of hollow structure denitration sulfur resistant catalyst.
Compared with prior art, the beneficial effects of the present invention are：
1）The present invention is modified processing to filtrate using sodium lignin sulfonate, and the Electrostatic Absorption of lignin enables catalyst steady It is fixed to be firmly carried on filter material surface, the bond strength of catalyst and filtrate is enhanced, makes filtrate that there is good denitration effect；Separately On the one hand, the addition of sodium lignin sulfonate will also increase the surface-active of filtrate, and to a series of performances such as tension of filtrate Intensity, corrosion-resistant, to molecule strainability etc. are also improved；
2）Co addition can significantly improve the sulfur resistive activity of catalyst in catalyst, and Co elements can suppress oxide component Vulcanization, the low-temperature SCR activity of catalyst is improved, makes function and service filtrate while has efficient denitration and sulfur resistance concurrently；
3）There is excellent denitration activity and preferable resistance to SO_2 in the range of 140 ~ 180 DEG C of the filtrate of the present invention；As ultrasonic 4h With very high denitration rate, while it is passed through SO2Its denitration rate can also be stablized more than 50% after a period of time.
Brief description of the drawings
Fig. 1 is the Experimental equipment of denitration performance test；
Fig. 2 is the FESEM figures of the composite filtering material for the lignin Electrostatic Absorption supported catalyst that embodiment 3 provides；
Fig. 3 is Mn, Co element XPS spectrum figure of the composite filtering material for the load hollow structure catalyst that embodiment 3 provides；
Fig. 4 is H2O and SO2Composite filtering material SCR activity to loading efficient hollow structure denitration sulfur resistant catalyst
Influence.
Fig. 5 is the lignin modification filtrate of the offer of example 3 compared with other surfaces activating agent modified filter material bond strength.
Embodiment
It is several specific embodiments of the present invention below, further illustrates the present invention, but the present invention is not limited only to this.
PPS acupuncture lacing felt filter materials in the following example are prepared as follows to obtain：Using polyphenylene sulfide fibre as raw material, warp Acupuncture lacing felt filter material is prepared in shredding, compound batch mixing, combing, lapping, acupuncture, thermal finalization and press polish of singing.
Embodiment 1
1）First prepare hollow structure catalyst：50 ml St (styrene) are weighed, (are configured with NaOH solution with 20g NaOH solids Into 200mL solution) washing 3 times, wash away the polymerization inhibitor in St, then with distilling water washing 2 times；Weigh 0.7g AIBN (azos Bis-isobutyronitrile) add washing after St, magnetic agitation dissolving.5.4g polyvinylpyrrolidones PVP (K-30) and 180g is weighed again Ethanol solution magnetic agitation dissolving, the St solution previously dissolved with AIBN is transferred to full of N in 500mL there-necked flasks2Three Mechanical agitation in mouth bottle, after emptying, electric jacket is heated to 80 DEG C, and is maintained at N2Atmosphere in react 20 hours, reaction terminates After cool the temperature to less than 35 DEG C.Product centrifuge washing three times, is positioned in 100 DEG C of baking ovens and dries 2h, be dried for standby.It is accurate to claim The polystyrene microsphere product that 0.5g is dried is measured, is dissolved in 50mL distilled water, ultrasonic dissolution 1h.0.0273g dodecanes are weighed again Base benzene sulfonic acid sodium salt adds above-mentioned system, ultrasonic 2h.0.3388g cobalt chloride hexahydrates are added into above-mentioned solution, ultrasound absorption afterwards 1h, it is set fully to be adsorbed in microsphere surface.Quality 0.15g potassium permanganate is dissolved in 50ml deionized waters again, is slowly added into Solution above.80 C water bath 3h, centrifugal drying obtain catalyst with core-casing structure.Finally by catalyst with core-casing structure by forging Burn solution and remove organic matter inside ball, obtain hollow structure catalyst.
A kind of preparation method for the composite filtering material for loading hollow structure denitration sulfur resistant catalyst, is concretely comprised the following steps：
1）0.1g sodium lignin sulfonates are added to stirring and dissolving in 50mL deionized waters, are made into lignin sulfonic acid sodium solution；
2）0.6g polyphenyl thioether filter materials are added in gained lignin sulfonic acid sodium solution, 2h is ultrasonically treated, makes lignin sulfonic acid Sodium is fully coated on filter media fibre surface by π-πconjugation mechanism；
3）The above-mentioned hollow structure denitration sulfur resistant catalysts prepared of 0.2g are added in the small beaker for be placed with ethanol ultrasonic Dissolving, is made into suspension；
4）By step 2）The filtrate of pretreatment gained, which takes out, is put into step 3）In gained suspension, filtrate just submerges, ultrasound Processing, lignin Electrostatic Absorption 2h；
5）Reaction takes out polyphenyl thioether filter material after terminating, with deionized water and ethanol that its surface clean is clean, then at 105 DEG C 10h is dried in baking oven, that is, area load, which is made, the composite filtering material of hollow structure denitration sulfur resistant catalyst, is urged on the composite filtering material The load capacity of agent is 48g/m2。
The denitration sulfur resistance of gained composite filtering material is in self-control tubular type SCR reactors（Its structure such as Fig. 1）Middle progress.NO and NH3Volume fraction is 0.05%, O2Volume fraction is 5%, and remaining is N2, gas flow rate 700mLmin-1, temperature setting is 180 DEG C, denitration rate is measured as 74% with Britain's KM940 flue gas analyzers；SO is passed through at 180 DEG C2, interval 30min tests, finally Denitration rate is basicly stable in 32%.
Embodiment 2
A kind of preparation method for the composite filtering material for loading hollow structure denitration sulfur resistant catalyst, is concretely comprised the following steps：
1）0.1g sodium lignin sulfonates are added to stirring and dissolving in 50mL deionized waters, are made into lignin sulfonic acid sodium solution；
2）0.6g polyphenyl thioether filter materials are added in gained lignin sulfonic acid sodium solution, 2h is ultrasonically treated, makes lignin sulfonic acid Sodium is fully coated on filter media fibre surface by π-πconjugation mechanism；
3）The above-mentioned hollow structure denitration sulfur resistant catalysts prepared of 0.2g are added in the small beaker for be placed with ethanol ultrasonic Dissolving, is made into suspension；
4）By step 2）The filtrate of pretreatment gained, which takes out, is put into step 3）In gained suspension, filtrate just submerges, ultrasound Processing, lignin Electrostatic Absorption 3h；
5）Reaction takes out polyphenyl thioether filter material after terminating, with deionized water and ethanol that its surface clean is clean, then at 105 DEG C 8h is dried in baking oven, that is, area load, which is made, the composite filtering material of hollow structure denitration sulfur resistant catalyst, is urged on the composite filtering material The load capacity of agent is 53g/m2。
The denitration sulfur resistance of gained composite filtering material is in self-control tubular type SCR reactors（Its structure such as Fig. 1）Middle progress.NO and NH3Volume fraction is 0.05%, O2Volume fraction is 5%, and remaining is N2, gas flow rate 700mLmin-1, temperature setting is 180 DEG C, denitration rate is measured as 83% with Britain's KM940 flue gas analyzers；SO is passed through at 180 DEG C2, interval 30min tests, finally Denitration rate is basicly stable in 41%.
Embodiment 3
A kind of preparation method for the composite filtering material for loading hollow structure denitration sulfur resistant catalyst, is concretely comprised the following steps：
1）0.1g sodium lignin sulfonates are added to stirring and dissolving in 50mL deionized waters, are made into lignin sulfonic acid sodium solution；
2）0.6g polyphenyl thioether filter materials are added in gained lignin sulfonic acid sodium solution, 2h is ultrasonically treated, makes lignin sulfonic acid Sodium is fully coated on filter media fibre surface by π-πconjugation mechanism；
3）The above-mentioned hollow structure denitration sulfur resistant catalysts prepared of 0.2g are added in the small beaker for be placed with ethanol ultrasonic Dissolving, is made into suspension；
4）By step 2）The filtrate of pretreatment gained, which takes out, is put into step 3）In gained suspension, filtrate just submerges, ultrasound Processing, lignin Electrostatic Absorption 4h；
5）Reaction takes out polyphenyl thioether filter material after terminating, with deionized water and ethanol that its surface clean is clean, then at 105 DEG C 12h is dried in baking oven, that is, area load, which is made, the composite filtering material of hollow structure denitration sulfur resistant catalyst, is urged on the composite filtering material The load capacity of agent is 60g/m2。
The denitration sulfur resistance of gained composite filtering material is in self-control tubular type SCR reactors（Its structure such as Fig. 1）Middle progress.NO and NH3Volume fraction is 0.05%, O2Volume fraction is 5%, and remaining is N2, gas flow rate 700mLmin-1, temperature setting is 180 DEG C, denitration rate is measured as 97% with Britain's KM940 flue gas analyzers；SO is passed through at 180 DEG C2, interval 30min tests, finally Denitration rate is basicly stable in 50%.
Embodiment 4
A kind of preparation method for the composite filtering material for loading hollow structure denitration sulfur resistant catalyst, is concretely comprised the following steps：
1）0.1g sodium lignin sulfonates are added to stirring and dissolving in 50mL deionized waters, are made into lignin sulfonic acid sodium solution；
2）0.6g polyphenyl thioether filter materials are added in gained lignin sulfonic acid sodium solution, 2h is ultrasonically treated, makes lignin sulfonic acid Sodium is fully coated on filter media fibre surface by π-πconjugation mechanism；
3）The above-mentioned hollow structure denitration sulfur resistant catalysts prepared of 0.2g are added in the small beaker for be placed with ethanol ultrasonic Dissolving, is made into suspension；
4）By step 2）The filtrate of pretreatment gained, which takes out, is put into step 3）In gained suspension, filtrate just submerges, ultrasound Processing, lignin Electrostatic Absorption 5h；
5）Reaction takes out polyphenyl thioether filter material after terminating, with deionized water and ethanol that its surface clean is clean, then at 105 DEG C 11h is dried in baking oven, that is, area load, which is made, the composite filtering material of hollow structure denitration sulfur resistant catalyst, is urged on the composite filtering material The load capacity of agent is 58g/m2。
The denitration sulfur resistance of gained composite filtering material is in self-control tubular type SCR reactors（Its structure such as Fig. 1）Middle progress.NO and NH3Volume fraction is 0.05%, O2Volume fraction is 5%, and remaining is N2, gas flow rate 700mLmin-1, temperature setting is 180 DEG C, denitration rate is measured as 94% with Britain's KM940 flue gas analyzers；SO is passed through at 180 DEG C2, interval 30min tests, finally Denitration rate is basicly stable in 48%.
Embodiment 5
A kind of preparation method for the composite filtering material for loading hollow structure denitration sulfur resistant catalyst, is concretely comprised the following steps：
1）0.1g sodium lignin sulfonates are added to stirring and dissolving in 50mL deionized waters, are made into lignin sulfonic acid sodium solution；
2）0.6g polyphenyl thioether filter materials are added in gained lignin sulfonic acid sodium solution, 2h is ultrasonically treated, makes lignin sulfonic acid Sodium is fully coated on filter media fibre surface by π-πconjugation mechanism；
3）The above-mentioned hollow structure denitration sulfur resistant catalysts prepared of 0.2g are added in the small beaker for be placed with ethanol ultrasonic Dissolving, is made into suspension；
4）By step 2）The filtrate of pretreatment gained, which takes out, is put into step 3）In gained suspension, filtrate just submerges, ultrasound Processing, lignin Electrostatic Absorption 4h；
5）Reaction takes out polyphenyl thioether filter material after terminating, with deionized water and ethanol that its surface clean is clean, then at 105 DEG C 9h is dried in baking oven, that is, area load, which is made, the composite filtering material of hollow structure denitration sulfur resistant catalyst, is urged on the composite filtering material The load capacity of agent is 57g/m2。
The denitration sulfur resistance of gained composite filtering material is in self-control tubular type SCR reactors（Its structure such as Fig. 1）Middle progress.NO and NH3Volume fraction is 0.05%, O2Volume fraction is 5%, and remaining is N2, gas flow rate 700mLmin-1, temperature setting is 180 DEG C, denitration rate is measured as 93% with Britain's KM940 flue gas analyzers；SO is passed through at 180 DEG C2, interval 30min tests, finally Denitration rate is basicly stable in 45%.
Fig. 5 is two kinds of different surfaces activating agent modified filter materials, in example 3, sodium lignin sulfonate modified filter material, and catalyst Load capacity can reach 60 g m-2, in 2000mL min-1Stream of nitrogen gas under purge, change over time, load capacity occur Perhaps weight is reduced, and there was only 40g m with neopelex modified filter material, catalyst loadings-2, and in stream of nitrogen gas Under purging, catalyst loadings decline quickly.Illustrate lignin modification filtrate can steady load catalyst, increase catalyst with Filtrate bond strength, improve filtrate denitration activity.

Claims (5)

  1. A kind of 1. composite filtering material for loading hollow structure denitration sulfur resistant catalyst, it is characterised in that：Using polyphenyl thioether filter material as load Body, after sodium lignin sulfonate is handled, obtain modified support；Then hollow structure denitration sulfur resistant catalyst is passed through into sulfomethylated lignin The composite filtering material with denitration sulfur resistive function is made on modified support in sour sodium electrostatic interaction absorption carriage.
  2. 2. the composite filtering material of load hollow structure denitration sulfur resistant catalyst according to claim 1, it is characterised in that：It is described The preparation method of hollow structure denitration sulfur resistant catalyst be：Using polystyrene microsphere as template, by surfactant to poly- Phenylethylene micro ball is modified, and manganese cobalt/cobalt oxide is then generated on polystyrene microsphere using coprecipitation, then pass through high temperature Or dissolution method goes removing template to obtain hollow structure denitration sulfur resistant catalyst.
  3. 3. the composite filtering material of load hollow structure denitration sulfur resistant catalyst according to claim 1, it is characterised in that：It is described The molecular weight of sodium lignin sulfonate be 10000-30000.
  4. 4. the composite filtering material of load hollow structure denitration sulfur resistant catalyst according to claim 1, it is characterised in that：It is described Polyphenyl thioether filter material be using polyphenylene sulfide fibre as raw material, through shredding, compound batch mixing, combing, lapping, acupuncture, thermal finalization and Press polish of singing is prepared, and average pore size is 37 μm.
  5. 5. a kind of method for the composite filtering material for preparing load hollow structure denitration sulfur resistant catalyst as claimed in claim 1, its It is characterised by：Comprise the following steps：
    1）0.1g sodium lignin sulfonates are added to stirring and dissolving in 50mL deionized waters, are made into lignin sulfonic acid sodium solution；
    2）0.6g polyphenyl thioether filter materials are added in gained lignin sulfonic acid sodium solution, 2h is ultrasonically treated, makes lignin sulfonic acid Sodium is fully coated on filter media fibre surface by π-πconjugation mechanism；
    3）0.2g hollow structure denitrations sulfur resistant catalyst is added into ultrasonic dissolution in ethanol, is made into suspension；
    4）By step 2）The filtrate of pretreatment gained, which takes out, is put into step 3）In gained suspension, filtrate just submerges, ultrasound Processing, adsorb 2 ~ 6 hours；
    5）Reaction takes out polyphenyl thioether filter material after terminating, with deionized water and ethanol that its surface clean is clean, then at 105 DEG C 8 ~ 12h is dried in baking oven, that is, area load, which is made, the composite filtering material of hollow structure denitration sulfur resistant catalyst.
CN201711164422.2A 2017-11-21 2017-11-21 A kind of composite filtering material for loading hollow structure denitration sulfur resistant catalyst and preparation method thereof Withdrawn CN107890706A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109847580A (en) * 2019-03-21 2019-06-07 青岛大学 Denitration filtrate and preparation method thereof based on plasma pre-treatment and infusion process
CN113058645A (en) * 2021-03-25 2021-07-02 福州大学 Graphene aromatic polyamide composite functional filter material prepared by conjugation method

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Application publication date: 20180410