CN104611780B - A kind of RP-CHOP denitrating catalyst fiber and the catalyst of preparation thereof - Google Patents
A kind of RP-CHOP denitrating catalyst fiber and the catalyst of preparation thereof Download PDFInfo
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- CN104611780B CN104611780B CN201510043079.0A CN201510043079A CN104611780B CN 104611780 B CN104611780 B CN 104611780B CN 201510043079 A CN201510043079 A CN 201510043079A CN 104611780 B CN104611780 B CN 104611780B
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Abstract
The invention discloses a kind of RP CHOP denitrating catalyst fiber, this fiber is added the nucleator of 12 weight portions by the polypropylene of 100 weight portions, by being processed into RP CHOP denitrating catalyst fiber by integer after the surface conditioning agent of filament surface mixing interpolation 20 40 weight portions is processed at 90 DEG C after making cellosilk by smelting furnace spinning technique, RP CHOP denitrating catalyst fiber and the mixing of 100 weight portion SCR denitration raw materials is prepared again by 59 weight portions, agitated, extrude, be dried, calcine prepared denitrating catalyst.SCR denitration produces during RP CHOP denitrating catalyst fiber of the present invention 400 DEG C of calcinings in process of production hundreds of millions gas ports make SCR denitration not modification, do not crack and increase the denitration specific surface area of SCR denitration and postpone denitrating catalyst intoxicating phenomenon and make its SCR denitration longer for service life, and the SCR denitration that can make super-thin makes cost reduce by 40%.
Description
Technical field
The present invention relates to a kind of RP-CHOP denitrating catalyst fiber and the SCR denitration of preparation thereof.
Background technology
Along with the discharge capacity of the development nitrogen oxides N0x of China's power industry grows with each passing day, coal fired power generation machine
Group be required to install SCR catalyst for denitrating flue gas N0x control treatment technology, SCR denitrating flue gas be one relatively
For ripe commercial technology, SCR denitration reduction reaction can only achieve 75%, SCR the most often occurs
Denitrating catalyst deactivation mechanism and intoxicating phenomenon and service life is the longest.Its main cause is N2And H2O reacts
Specific surface area is little. at high temperature SCR catalyst for denitrating flue gas thermal sintering deactivation mechanism, and the thermal sintering of catalyst
Process is irreversible sintering, and causing catalyst activity to reduce can not recover by the way of catalyst regenerates,
This is one of the major reason of catalysqt deactivation.Typically when flue-gas temperature is higher than 400 degree, sintering begins to send out
Raw, 450 degree of catalyst lifes will be greatly reduced in the short period of time, and the most commercial SCR denitrating flue gas is urged
Agent mostly is V2O5-WO3-TiO2Catalyst, wherein V2O5For active component, WO3For stable elements, TiO2For carrying
Body material, for the TiO of SCR catalyst for denitrating flue gas2Crystal formation be anatase titanium dioxide, gold can be changed into after being sintered
Red stone-type, thus cause crystal particle diameter to increase exponentially and SCR denitration inactivation and coal ash sinter.
Summary of the invention
In order to solve the problems referred to above, the present invention proposes the denitration of RP-CHOP denitrating catalyst fiber and preparation thereof and urges
Agent, adds RP-CHOP denitrating catalyst fiber, in process of production in SCR denitration raw material
SCR denitration produces during 400 DEG C of calcinings hundreds of millions gas ports, makes SCR denitration not modification, no
Crack and add the denitration specific surface area of SCR denitration and postpone denitrating catalyst intoxicating phenomenon
Make its SCR denitration longer for service life, and the SCR denitration that can make super-thin makes cost drop
Low by 40%.
The present invention realizes particular by techniques below scheme:
A kind of RP-CHOP denitrating catalyst fiber, it is characterised in that this fiber is by the polypropylene of 100 weight portions
Add the nucleator of 1-2 weight portion, cross logical to fiber after making cellosilk by smelting furnace spinning technique at 90 DEG C
The surface conditioning agent of silk surface mixing interpolation 20-40 weight portion is processed into by integer after processing
RP-CHOP denitrating catalyst fiber.
Further, a length of 0.8-1.2mm of RP-CHOP denitrating catalyst fiber is prepared.
Further, the tensile strength preparing RP-CHOP denitrating catalyst fiber is 400-600MPa, and fracture is stretched
Long rate 10-100%, surface conditioning agent content is 20-40%, and elastic modelling quantity is 2000-3500MPa, equivalent diameter
For 10-40 μm.
Further, described polyacrylic molecular weight is 1800-2000 ten thousand.
Further, described nucleator is high molecular polymer.
Denitrating catalyst prepared by a kind of RP-CHOP denitrating catalyst fiber, by the 5-9 weight portion of above-mentioned system
RP-CHOP denitrating catalyst fiber and 100 weight portion SCR denitration raw materials mixing, agitated, extruding,
Be dried, calcining prepares.
What the present invention produced has the beneficial effect that this RP-CHOP denitrating catalyst fiber is by macromolecule polypropylene warp
Crossing interpolation nucleator, micromodification becomes original properties of materials, by smelting furnace spinning process spinning, fiber formed after
Being completed by list processing agent post-treatment outside adding, the product completed adds SCR denitration to
After (4NH3+4NO+O2 → 4N2+6H2O), make during producing SCR denitration, due to this denitration
Catalyst fiber every cubic metre contains 23.08 hundred million to 34.62 hundred million fibre single threads, and this fiber dispersion is extremely strong also
Good bond stress is had with SCR denitration base material, after being sufficiently stirred for SCR denitration base material,
These monofilament form uniform, fine and close random distribution support system in the base, are producing SCR denitration
During produce hundreds of millions gas ports, make SCR denitration not modification, do not crack and add SCR
The denitration specific surface area of denitrating catalyst and postponement denitrating catalyst intoxicating phenomenon make its SCR denitration make
Longer with the life-span, and the SCR denitration that super-thin can be made make cost reduce by 40%.
Surface conditioning agent is when being processed into RP-CHOP denitrating catalyst fiber by integer for 90 DEG C simultaneously, due to
Fiber is in the limit state before thawing, but does not melt, and surface conditioning agent can well be attached to fibre
Dimension table face the mouth that partly splits with fiber surface are combined formation one, play anti-quiet when producing SCR denitration
Electric, smooth, anti-SCR denitration base material comes off, and the energy when producing SCR denitration 400 DEG C calcining
It is to produce diversion stomatal in carbon dioxide makes SCR denitration to prevent SCR denitration to be catalyzed along speed catalysis fibre
Agent bursts, it is most important that the denitration specific surface area increasing catalyst makes denitration effect more preferably.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly and completely
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole enforcement
Example.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, broadly falls into the scope of protection of the invention.
Embodiment 1:
SCR denitration uses Jiangsu Longyuan Catalyst Co., Ltd. to produce, wherein TiO270～90 parts, WO3
3～10 parts, V2O52～4 parts, metal-oxide 0～10 parts, glass fibre 3～15 parts, through mixing, squeeze
SCR denitration is prepared after going out drying and calcining.
Embodiment 2:
Chongqing Yuanda Catalyst Manufacturing Co., Ltd. uses the SCR denitration of embodiment 1 same recipe, and
Adding the RP-CHOP denitrating catalyst fiber of the 5-9% of SCR denitration weight in formula, RP-CHOP takes off
Denox catalyst fiber use the proportioning of the scheme of the application, parameter implement manufacture, through same steps mixing,
SCR denitration is prepared after extrusion drying and calcining.
The SCR denitration that above two embodiment prepares is tested, reaction condition: dustiness
45g/Nm3, air speed 4000h-1, NO content 400ppm, NH3Content 324ppm, SO2Content 500ppm, H2O
Content 10%, N2For Balance Air, test result takes its average and is compared as follows:
| Test event | Embodiment 1 | Embodiment 2 |
| 380 DEG C of denitration efficiencies (%) | 79 | 97 |
| Minimum wall thickness (MINI W.) (mm) | 1.1 | 0.6 |
| Long life (h) | 24000 | 26000 |
| Row yielding (%) | 78 | 97 |
As seen from the above table: the catalyst denitration effect that the present invention prepares after adding RP-CHOP denitrating catalyst fiber
Fruit promotes about 20%, and main cause is RP-CHOP denitrating catalyst fiber anticracking during SCR denitration agent
Stricture of vagina, indeformable, produce when hot conditions every cubic metre containing 23.08 hundred million to 34.62 hundred million fibre single threads,
Form gas port, increase SCR denitration specific surface area about 20%. and then increase denitration effect and postpone denitrating catalyst
Intoxicating phenomenon.
This fiber dispersion is extremely strong and has good bond stress with SCR denitration base material, through taking off with SCR
After denox catalyst base material is sufficiently stirred for, these monofilament form uniform, fine and close random distribution in the base and support
System, improves product row yielding, reduces catalyst wall thickness, increase SCR denitration effect.RP-CHOP denitration is urged
The a length of 0.8-1.2mm of agent fiber, equivalent diameter is 10-40 μm, for SCR denitration matrix
There are good parcel, fineness, SCR denitration can play good pod apertures and increase catalysis
The specific surface area of agent makes it increase SCR denitration catalytic effect.And surface conditioning agent is producing SCR denitration
Time play antistatic, smooth, anti-SCR denitration base material comes off and is producing SCR denitration 400 DEG C
Can be to produce diversion stomatal in carbon dioxide makes SCR denitration to prevent along speed catalysis fibre during calcining
SCR denitration bursts, and increases SCR denitration specific surface area.
The tensile strength of RP-CHOP denitrating catalyst fiber is 400-600MPa, elongation at break 10-100%,
Oil content is 20-40%, elastic modelling quantity be 2000-3500Mpa be RP-CHOP denitrating catalyst fiber composition
Key technology data, play vital effect: produce SCR denitration and urge in producing SCR denitration
Agent be use high pressure extrusion apparatus shape, crushing strength be 300MPa, extrusion speed be 1 meter per minute,
RP-CHOP denitrating catalyst fiber adds in SCR denitration base material, and is well wrapped in base material
Require together and again to have good flatness, stand the impact of high-voltage high-speed, produce SCR denitration
Middle raising row yielding is indeformable not to ftracture, and the technical characteristic of this RP-CHOP denitrating catalyst fiber can well
Meet.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within bright spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in this
Within bright protection domain.
Claims (6)
1. a RP-CHOP denitrating catalyst fiber, it is characterised in that this fiber gathering by 100 weight portions
Propylene adds the nucleator of 1-2 weight portion, passes through after making cellosilk by smelting furnace spinning technique at 90 DEG C
To filament surface mixing add 20-40 weight portion surface conditioning agent process after by integer processing system
Become RP-CHOP denitrating catalyst fiber.
2. RP-CHOP denitrating catalyst fiber as claimed in claim 1, it is characterised in that prepare RP-CHOP
The a length of 0.8-1.2mm of denitrating catalyst fiber.
3. RP-CHOP denitrating catalyst fiber as claimed in claim 1 or 2, it is characterised in that prepare
The tensile strength of RP-CHOP denitrating catalyst fiber is 400-600MPa, elongation at break 10-100%, oil preparation
Content is 20-40%, and elastic modelling quantity is 2000-3500MPa, and equivalent diameter is 10-40 μm.
4. RP-CHOP denitrating catalyst fiber as claimed in claim 1, it is characterised in that described poly-third
The molecular weight of alkene is 1800-2000 ten thousand.
5. RP-CHOP denitrating catalyst fiber as claimed in claim 1, it is characterised in that described nucleation
Agent is high molecular polymer.
6. the SCR denitration that prepared by the RP-CHOP denitrating catalyst fiber as described in any one of claim 1-5
Catalyst, it is characterised in that prepared RP-CHOP denitrating catalyst fiber and 100 weight by 5-9 weight portion
The mixing of part SCR denitration raw material, agitated, extrude, be dried, calcine prepared.
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| CN107321348B (en) * | 2016-08-31 | 2021-04-27 | 湖南循安环境资源技术有限公司 | Catalytic fiber capable of catalytically removing organic gaseous pollutants, preparation method thereof, catalytic filter bag and bag-type dust collector |
| CN106622370B (en) * | 2016-12-20 | 2021-04-27 | 武汉科丝力纤维制造有限公司 | Low-temperature denitration catalyst fiber sodium ion removal auxiliary agent and preparation method thereof |
| CN111185173B (en) * | 2020-01-09 | 2021-08-06 | 山东大学 | Molded red mud catalyst and preparation method and application thereof |
| CN113509924B (en) * | 2021-05-22 | 2022-05-03 | 山东博霖环保科技发展有限公司 | Denitration catalyst and production process thereof |
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| CN103877970A (en) * | 2014-03-24 | 2014-06-25 | 中安庆华河北节能环保工程技术有限公司 | Honeycombed waste gas denitrification catalyst |
| CN104226300A (en) * | 2014-08-08 | 2014-12-24 | 江苏宇达环保科技股份有限公司 | SCR (Selective Catalytic Reduction) catalyst and preparation method thereof |
| CN104226301A (en) * | 2014-09-16 | 2014-12-24 | 东营信拓汽车消声器有限公司 | Preparation method of rare-earth-based composite multi-component denitrification and dioxin removal catalyst |
| CN104258856A (en) * | 2014-09-16 | 2015-01-07 | 东营信拓汽车消声器有限公司 | Preparation method of porous honeycomb ceramic catalyst with high specific surface area |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103877970A (en) * | 2014-03-24 | 2014-06-25 | 中安庆华河北节能环保工程技术有限公司 | Honeycombed waste gas denitrification catalyst |
| CN104226300A (en) * | 2014-08-08 | 2014-12-24 | 江苏宇达环保科技股份有限公司 | SCR (Selective Catalytic Reduction) catalyst and preparation method thereof |
| CN104226301A (en) * | 2014-09-16 | 2014-12-24 | 东营信拓汽车消声器有限公司 | Preparation method of rare-earth-based composite multi-component denitrification and dioxin removal catalyst |
| CN104258856A (en) * | 2014-09-16 | 2015-01-07 | 东营信拓汽车消声器有限公司 | Preparation method of porous honeycomb ceramic catalyst with high specific surface area |
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