CN109201099A - It can reduce composition of CO and NOx emission and its preparation method and application and fluidized catalytic cracking method - Google Patents
It can reduce composition of CO and NOx emission and its preparation method and application and fluidized catalytic cracking method Download PDFInfo
- Publication number
- CN109201099A CN109201099A CN201710543245.2A CN201710543245A CN109201099A CN 109201099 A CN109201099 A CN 109201099A CN 201710543245 A CN201710543245 A CN 201710543245A CN 109201099 A CN109201099 A CN 109201099A
- Authority
- CN
- China
- Prior art keywords
- composition
- nox emission
- weight
- reduce
- presoma
- 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
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/20—Carbon compounds
- B01J27/22—Carbides
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
-
- 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
- B01D53/864—Removing carbon monoxide or hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0063—Granulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/082—Decomposition and pyrolysis
- B01J37/088—Decomposition of a metal salt
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G11/00—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
- C10G11/02—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils characterised by the catalyst used
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Catalysts (AREA)
Abstract
The present invention relates to catalytic cracking fields, disclose composition that can reduce CO and NOx emission and its preparation method and application and fluidized catalytic cracking method, the composition provided by the invention that can reduce CO and NOx emission, the composition is made of inorganic oxide carrier and the Fe and Co that load on an inorganic, on the basis of the total amount of composition, the content of the inorganic oxide carrier is 60-95 weight %, and in terms of oxide, the total content of Fe and Co are 5-40 weight %.Composition Fe and Co provided by the invention is used cooperatively collectively as main metallic element can keep composition hydrothermal stability with higher, and reduction regenerated gas CO with higher and NOx emission activity.
Description
Technical field
The present invention relates to catalytic cracking fields, and in particular to can reduce the composition of CO and NOx emission, can reduce CO
With the preparation method and the composition obtained by this method that can reduce CO and NOx emission, above-mentioned energy of the composition of NOx emission
Enough reduce application and the fluidized catalytic cracking method of the composition of CO and NOx emission.
Background technique
The constantly soaring processing cost for having increased considerably refinery of crude oil price, on the one hand refinery passes through buys low price
Poor oil reduces cost;On the other hand economic well-being of workers and staff is increased by deep processing mink cell focus.Catalytic cracking is as refinery's weight
The important means of oil processing, there is very important status in refinery, is not only oil plant heavy oil balance, production clean fuel
Main means, the even more focus of the energy efficiency of oil plant.Catalytic cracking is a kind of quickly urging for rapid catalyst deactivation
Change reaction system, solves the problems, such as the main line of catalyst regeneration always catalytic cracking development.
During fluid catalytic cracking (FCC), feedstock oil and regenerated catalyst are catalyzed in riser Rapid contact
Cracking reaction reacts and causes its inactivation in the coke laydown to catalyst of generation, and the catalyst of green coke inactivation enters after stripping
Regenerator, the regeneration air entered with regenerator bottoms or the air rich in oxygen, which contact, carries out coke burning regeneration.Urging after regeneration
Agent is recycled back to reactor and participates in catalytic cracking reaction again.According to the height of flue gas Excess oxygen content in regenerative process or CO oxygen
Catalytic cracking unit can be divided into regeneration completely and incomplete regen-eration operation by the abundant degree changed.
In complete regenerative process, the nitrogenous compound in coke and coke generates CO under the action of regeneration air2And N2,
The pollutants such as CO and NOx can be also generated simultaneously.It the use of catalyst aid is the important technique measure for controlling CO and NOx emission pollution.
Auxiliary agent for reducing regenerated gas CO discharge is commonly referred to as CO combustion adjuvant, such as CN1022843C discloses one kind
Noble metals load-carbon oxide accelerator, active component are 1-1000ppm platinum or 50-1000ppm palladium, and carrier is by (1)
The microsphere particle of 99.5~50% Cracking catalyst or its matrix and (2) 0.5-50%Al2O3, 0-20%RE2O3And 0-15%
ZrO2Composition, (2) are the external coatings of (1) particle.
Auxiliary agent for controlling flue gas NOx discharge commonly referred to as reduces NOx emission auxiliary agent or NOx reduction auxiliary agent, such as
CN102371150A discloses a kind of base metal composition for reducing regeneration fume from catalytic cracking NOx emission, and described group
The heap ratio for closing object is no more than 0.65 grams per milliliter, on the basis of the weight of the composition, containing in terms of oxide: (1) 50-99
The one or more selected from IIA, IIB, IVB and group vib of the inorganic oxide carrier of weight %, (2) 0.5-40 weight % are non-
Precious metal element, and the rare earth element of (3) 0.5-30 weight %.The composition is used for fluid catalytic cracking, can significantly drop
Low regenerated flue gas NOx emission.
There are also one kind can reduce the auxiliary agent of regenerated gas CO and NOx emission simultaneously, and it is combustion-supporting and reduce NOx row can to take into account CO
Put, it is increasingly strict with environmental regulation, this analog assistant using more prevalent.For example, CN1688508A discloses a kind of drop
The composition and its application, the composition of low fluid catalytic cracking flue gas NOx and CO discharge include copper and/or cobalt and load
Body, the carrier are selected from hydrotalcite-based compound, spinelle, aluminium oxide, zinc titanate, zinc aluminate, zinc titanate/zinc aluminate.
CN102371165A disclose it is a kind of for reducing FCC regenerated gas CO and the low heap of NOx emission than composition, the composition contains
There are rare earth element and one or more of non-noble metal j elements, preferably base metal is carried on y-type zeolite.US6165933 is public
Opened it is a kind of reduce catalytic cracking process NOx emission the combustion-supporting composition of CO (auxiliary agent), the composition includes: (i) substantially
Acidic metal oxide not zeolite-containing;(ii) alkali metal, alkaline-earth metal or their mixture;(iii) oxygen storage components and
(iv) palladium, the preferred silica-alumina of inorganic oxide carrier, the storage oxygen transition metal oxide preferably aoxidize
Cerium.US7045056 disclose it is a kind of for and meanwhile reduce the composition of catalytic cracking process flue gas CO and NOx emission, described group
It closes object to contain: a kind of (i) inorganic oxide carrier;(ii) oxide of cerium;(iii) a kind of lanthanide oxide except cerium,
Wherein the weight ratio of (ii) and (iii) is at least 1.66:1;(iv) optionally a kind of IB and Group IIB transition metal oxide, with
And (v) at least one precious metal element.CN105363444A discloses one kind for reducing FCC regenerated gas CO and NOx emission
Composition and preparation method thereof, the composition contains in terms of oxide: (1) rare earth element of 0.5-30 weight %, (2)
The precious metal element of 0.01-0.15 weight %, and the inorganic oxide for being substantially free of alkali and alkaline earth metal ions of (3) surplus carry
Body;In preparation method, the composition after introducing noble metal is handled before dry and/or roasting through alkaline solution, disclosed in
Composition can be controlled effectively caused by capable of effectively avoiding because of regenerated gas CO excessive concentration " after-burning " for fluid catalytic cracking
The concentration of emission of CO and NOx in preparation, regeneration flue gas significantly reduces flue gas NOx discharge, and it is unfavorable not cause substantially to FCC product distribution
It influences.
During incomplete regen-eration, since Excess oxygen content is low in flue gas, CO concentration is high, NOx in regenerator outlet flue gas
Concentration is very low, and reduction-state nitride such as NH3, HCN isoconcentration it is higher.These reduction-state nitride are downstream flowed with flue gas
It is dynamic, in the CO boiler for recovering energy, if being substantially oxidized, generate NOx;If not being substantially oxidized, remaining NH3
Etc. easily causing downstream scrubber effluent ammonia nitrogen exceeded, or with the SO in flue gasxReaction generate ammonium salt precipitation cause remaining pot or its
Its flue gas equipment for after-treatment (such as SCR) salt crust, influences device long-term operation.Thus, incomplete regen-eration process is helped using catalysis
Agent catalyzed conversion NH in a regenerator3Equal substances, can reduce NOx emission in flue gas, extend the device cycle of operation.
US5021144 discloses NH in a kind of reduction incomplete regen-eration FCC apparatus flue gas3The method of discharge, this method are
Excessive CO combustion adjuvant is added in a regenerator, additional amount is 2-3 times of the minimum additional amount that can prevent dilute phase bed tail from firing.It should
Although method can reduce NH in incomplete regen-eration FCC apparatus flue gas3Discharge, but the usage amount of CO is larger, and it is higher that there are energy consumptions
Defect, and be unfavorable for environmental protection.
US4755282 discloses NH in a kind of reduction partial regeneration or incomplete regen-eration FCC apparatus flue gas3The side of discharge
Method.This method makes it maintain one in dilute phase bed by the way that ammonia decomposition catalyzer of the granularity at 10-40 μm is added into regenerator
Fixed concentration, by NH3It is converted into N2And water.The active component of the ammonia decomposition catalyzer can be dispersed in inorganic oxide load
Noble metal on body.
CN101024179A discloses the composition that NOx is restored used in a kind of FCC process, and the composition contains (i) base
Acidic metal oxide, (ii) alkali metal, alkaline-earth metal and their mixture and (iii) storage oxygen group not zeolite-containing in sheet
Point.The composition prepared with precious metal impregnation, to convert the vapour phase reduction nitrogen class in incomplete regen-eration catalytic cracking unit flue gas
Substance reduces flue gas NOx discharge.
Currently, for controlling incomplete regen-eration device flue gas NH3With the auxiliary agent technical research and application report phase of NOx emission
It is existing to be suitable for regeneration dress completely due to incomplete regen-eration device flue gas composition and complete regenerating unit significant difference to less
The catalyst aid set, the application effect on incomplete regen-eration device are undesirable.Though assistant composition disclosed in above-mentioned technology
It so being capable of NH in catalyzed conversion flue gas to a certain extent3Equal reduction-states nitride, but to NH in flue gas3Equal reduction-states nitride
Catalyzed conversion activity it is still to be improved, to slow down NH3Deng the influence that deposition salt crust runs equipment, thus needs to develop and be applicable in
In the flue gas pollutant emission reduction auxiliary agent of incomplete regen-eration device, flue gas NOx discharge is further decreased.
Summary of the invention
For in prior art regenerative process, NH3The lower defect of catalyzed conversion activity of equal reduction-states nitride, this hair
The preparation side of the bright composition that the new composition that can reduce CO and NOx emission of one kind is provided, can reduce CO and NOx emission
Method and the composition obtained by this method that can reduce CO and NOx emission, the above-mentioned composition that can reduce CO and NOx emission
Application and a kind of fluidized catalytic cracking method in fume treatment.CO and the NOx emission provided by the invention of can reduce
Composition is high to the catalyzed conversion activity of reduction-state nitride, and preparation method is simple, is used in fluid catalytic cracking process, can
It is effectively reduced CO and NOx emission in regeneration fume from catalytic cracking, the combination provided by the invention that can reduce CO and NOx emission
Object is especially suitable for incomplete regen-eration fume treatment process.
The present inventor has found in the course of the research, using inorganic oxide as carrier, using Fe and Co as active group
Divide and be used cooperatively, CO and NOx emission in regeneration fume from catalytic cracking can be effectively reduced.Speculate its reason can be due to:
Fe and Co forms the combination that can reduce CO and NOx emission with certain content and inorganic oxide collectively as main metallic element
Object advantageously reduces the generation of oxidation state nitrogenous compound, and can promote the decomposition of reduction-state nitrogenous compound.
Through further research, it has been found that in the preferred case, after spray drying, the solids that will be obtained after spray drying
Matter high-temperature process under carbon-containing atmosphere can more efficiently reduce regeneration fume from catalytic cracking CO and NOx emission.Above-mentioned excellent
In the case of choosing, further modulation and stabilization processes are carried out to the structure for the composition that can reduce CO and NOx emission, are made it possible to
The composition of CO and NOx emission is enough reduced to NH3The catalyzed conversion activity of equal reduction-states nitride significantly improves, and has more preferable
Hydrothermal stability, meet requirement of the regenerator thermal and hydric environment to the composition that can reduce CO and NOx emission.
Based on this, according to the first aspect of the invention, a kind of composition that can reduce CO and NOx emission, the group are provided
It closes object to be made of inorganic oxide carrier and the Fe and Co that load on an inorganic, using the total amount of composition as base
The content of standard, the inorganic oxide carrier is 60-95 weight %, and in terms of oxide, the total content of Fe and Co are 5-40 weight
Measure %.
According to the second aspect of the invention, a kind of preparation method of composition can reduce CO and NOx emission is provided, it should
Method includes:
The presoma of inorganic oxide carrier, the presoma of Fe, the presoma of Co and water are mixed with beating, slurries are obtained,
The slurries are spray-dried, are then roasted;
Wherein, the dosage of the presoma of the presoma of inorganic oxide carrier, the presoma of Fe and Co makes, with composition
Total amount on the basis of, the content of the inorganic oxide carrier is 60-95 weight %, in terms of oxide, the total content of Fe and Co
For 5-40 weight %.
According to the third aspect of the invention we, providing one kind can reduce CO and NOx emission as made from above-mentioned preparation method
Composition.
According to the fourth aspect of the invention, the above-mentioned composition that can reduce CO and NOx emission is provided in fume treatment
Application.
According to the fifth aspect of the invention, provide the above-mentioned composition that can reduce CO and NOx emission catalytic cracking again
Application in raw fume treatment.
According to the sixth aspect of the invention, a kind of fluidized catalytic cracking method is provided, this method comprises: by hydrocarbon ils and catalysis
Then agent haptoreaction regenerates the catalyst after haptoreaction, the catalyst includes catalytic cracking catalyst and energy
The composition of CO and NOx emission are enough reduced, the composition that can reduce CO and NOx emission can reduce for the present invention is above-mentioned
The composition of CO and NOx emission.
The composition provided by the invention that can reduce CO and NOx emission, can be in regenerator as assistant for calalytic cracking
Higher hydrothermal stability, reduction regenerated gas CO with higher and NOx emission activity are kept in thermal and hydric environment.In addition, this
The preparation method of the composition that can reduce CO and NOx emission provided, easy to operate, lower production costs are provided.With use
Existing reduction CO is compared with the FCC method of NOx emission auxiliary agent, uses the group provided by the invention that can reduce CO and NOx emission
The FCC method of object is closed, the composition dosage that can reduce CO and NOx emission is low, and reduction CO and NOx emission activity are higher.
For example, the composition that can reduce CO and NOx emission that the embodiment of the present invention 3 provides, by accounting for total catalyst weight
After ratio and FCC major catalyst (Cat-A) blending uniformly of 0.8 weight %, through aging 12 under 800 DEG C, 100% water vapour atmosphere
The evaluation of catalytic cracking reaction-regeneration is carried out after hour, with the prior art using active component saturation dipping method preparation can
CO is reduced to compare with the composition D-3 of NOx emission, when using the composition provided by the invention that can reduce CO and NOx emission,
The concentration of emission of NOx is down to 57ppm by 109ppm in incomplete regen-eration flue gas under aerobic conditions.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the XRD spectrum that can reduce the composition of CO and NOx emission made from embodiment 1 and embodiment 5.
Specific embodiment
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
The present invention provides a kind of compositions that can reduce CO and NOx emission, and the composition is by inorganic oxide carrier
And the Fe and Co composition of load on an inorganic, on the basis of the total amount of composition, the inorganic oxide is carried
The content of body is 60-95 weight %, and in terms of oxide, the total content of Fe and Co are 5-40 weight %.
For the present invention in the composition, the range of choice of the content of Fe and Co is wider, it is preferable that with the total amount of composition
On the basis of, the content of the inorganic oxide carrier is 75-92 weight %, and in terms of oxide, the total content of the Fe and Co are
8-25 weight %;It is further preferred that the content of the inorganic oxide carrier is 84-90 weight %, it is described in terms of oxide
The total content of Fe and Co is 10-16 weight %.
The present invention is used cooperatively by the Fe and Co of specific total amount as metallic element, and metallic element dosage is few, and with it is existing
Having technology to compare enables to reduction CO and NOx emission activity higher.
In the present invention, as long as using Fe and Co to be used cooperatively as metallic element can be improved composition to NH3Deng reduction
The catalyzed conversion activity of state nitride, in order to further play the synergistic effect of Fe and Co, it is preferable that in terms of oxide, Fe
Weight ratio with Co is 1:(0.1-10), further preferably 1:(0.3-3), it is still more preferably 1:(0.4-2).The present invention
Inventor find that Fe and Co can generate better synergistic effect at a specific ratio, be more advantageous to the property for promoting composition
Energy.
In the present invention, in the case of no specified otherwise, Fe refers to Fe with Fe in terms of oxide2O3Meter, Co are in terms of oxide
Refer to Co with Co2O3Meter.
A preferred embodiment of the invention, the Fe in the composition are at least partly deposited in the form of cementite
, it is preferable that the cementite is Fe3C and/or Fe7C3.There is no particular limitation for existing amount of the present invention to cementite, only
The performance that can reduce the composition of CO and NOx emission can be effectively improved by partially carbonized iron occur.
A preferred embodiment of the invention, the Co in the composition are at least partly deposited in the form of simple substance cobalt
?.There is no particular limitation for existing amount of the present invention to simple substance cobalt, as long as occurring that part simple substance cobalt can effectively improve can
Reduce the performance of the composition of CO and NOx emission.
It should be noted that metallic element is mostly with oxidation state in composition in the existing composition for reducing CO and NOx emission
Form exists.Composition of the present invention during the preparation process, is preferably roasted under carbon-containing atmosphere, so that part FeO turns
Cementite is turned to, part CoO is converted into simple substance cobalt.
The presence of cementite and/or simple substance cobalt can make composition preferably promote the decomposition of reduction-state nitrogenous compound,
The generation of nitrogen oxides is reduced, and nitrogen oxides can be promoted to be reduced to a certain extent.
The composition provided according to the present invention, it is preferable that be 42.6 °, 44.2 ° in 2 θ in the XRD spectrum of the composition
With 44.9 ° at have diffraction maximum.
Specifically, the diffraction maximum of 2 θ to be at 42.6 ° and 44.9 ° be cementite;2 θ are at 44.2 ° be simple substance cobalt diffraction
Peak.
A preferred embodiment of the invention, in the XRD spectrum of composition provided by the invention, 2 θ are 44.9 °
It is the diffraction maximum at 42.6 ° that the diffraction maximum at place, which is better than 2 θ,.
The composition provided according to the present invention, the inorganic oxide carrier can be various nothings commonly used in the art
Machine oxide carrier, for example, selected from aluminium oxide, silica-alumina, zeolite, spinelle, kaolin, diatomite, perlite and
At least one of perovskite.In the present invention, the spinelle can be common various spinelles, such as can be magnalium point
At least one of spar, gahnite and titanium aluminate.
A preferred embodiment of the invention, the inorganic oxide carrier are selected from aluminium oxide, spinelle and calcium
At least one of titanium ore, further preferably aluminium oxide.
In the present invention, the aluminium oxide can be selected from gama-alumina, δ-aluminium oxide, η-aluminium oxide, ρ-aluminium oxide, κ-oxygen
Change at least one of aluminium and χ-aluminium oxide, there is no particular limitation to this by the present invention.
The aluminium oxide can be originated from the various colloidal sols or gel or aluminium hydroxide of aluminium.The aluminium hydroxide can select
From at least one of gibbsite, surge aluminium stone, promise diaspore, diaspore, boehmite and boehmite.It is preferred that described
Alumina source is from boehmite.
Above-mentioned inorganic oxide carrier is commercially available, and can also be prepared using existing method.
A kind of most preferred embodiment according to the present invention, is used cooperatively using certain content Fe, Co as metallic element,
The composition that can reduce CO and NOx emission can be increased substantially to NH3The catalyzed conversion activity of equal reduction-states nitride, and make
The composition that CO and NOx emission must be can reduce has more excellent hydrothermally stable performance.
A kind of specific embodiment according to the present invention, the composition by aluminium oxide and load Fe on alumina and
Co composition, in terms of oxide, the weight ratio of Fe and Co are 1:(0.4-2), on the basis of the total amount of composition, the aluminium oxide
Content is 84-90 weight %, and in terms of oxide, the total content of the Fe and Co are 10-16 weight %.
In the present invention, it can reduce each component content in CO and the composition of NOx emission and be all made of X-ray fluorescence spectra point
Analysis method (petrochemical analysis method (RIPP experimental method), Yang Cui is surely equal to be compiled, and Science Press's nineteen ninety publishes) measures.
The present invention also provides a kind of preparation methods of composition that can reduce CO and NOx emission, this method comprises:
The presoma of inorganic oxide carrier, the presoma of Fe, the presoma of Co and water are mixed with beating, slurries are obtained,
The slurries are spray-dried, are then roasted;
Wherein, the dosage of the presoma of the presoma of inorganic oxide carrier, the presoma of Fe and Co makes, with composition
Total amount on the basis of, the content of the inorganic oxide carrier is 60-95 weight %, in terms of oxide, the total content of Fe and Co
For 5-40 weight %.
In the present invention, the presoma of the inorganic oxide carrier includes that can obtain inorganic oxygen by subsequent calcination process
The various substances of compound carrier, there is no particular limitation to this by the present invention.
The preparation method provided according to the present invention, the selection of the inorganic oxide carrier is as described above, no longer superfluous herein
It states.
In the present invention, the presoma of aluminium oxide can various colloidal sols selected from aluminium or gel or aluminium hydroxide.The hydrogen
Aluminium oxide can be in gibbsite, surge aluminium stone, promise diaspore, diaspore, boehmite and boehmite at least
It is a kind of.The presoma of the most preferably described aluminium oxide is boehmite.
The preparation method provided according to the present invention, it is preferable that before being mixed with beating, acid is carried out to the presoma of aluminium oxide
Change peptization processing, the acidification peptization processing can be carried out according to conventional technical means in the art, it is further preferred that the acid
Changing the acid that peptization processing uses is hydrochloric acid.
The present invention is wider to the range of choice of the condition of the acidification peptization processing, it is preferable that the acidification peptization processing
Condition include: acid-aluminum ratio be 0.12-0.22:1, time 20-40min.
In the present invention, in the case of no specified otherwise, the acid-aluminum ratio refers to the hydrochloric acid in terms of the concentrated hydrochloric acid of 36 weight %
With the mass ratio of the presoma of the aluminium oxide in terms of butt.
The specific embodiment of the acidification peptization processing can be with are as follows: boehmite is added to the water mashing dispersion, so
Hydrochloric acid is added afterwards and is acidified 30min, acid-aluminum ratio 0.18.
According to the present invention, the presoma of the Fe and the presoma of Co are respectively selected from the water soluble salt of Fe and Co, such as nitric acid
Salt, chloride, chlorate or sulfate etc., there is no particular limitation to this by the present invention.
Preparation method according to the present invention, the range of choice of the dosage of the presoma of presoma and Co to the Fe
It is wider, it is preferable that the dosage of the presoma of the presoma of the inorganic oxide carrier, the presoma of Fe and Co makes, with group
On the basis of the total amount for closing object, the content of the inorganic oxide carrier is 75-92 weight %, in terms of oxide, the Fe and Co
Total content be 8-25 weight %;It is further preferred that the content of the inorganic oxide carrier is 84-90 weight %, with oxygen
The total content of compound meter, the Fe and Co are 10-16 weight %.
The preparation method of the composition provided by the invention that can reduce CO and NOx emission, it is preferable that
Before inorganic oxide carrier by the presoma of the presoma of the Fe of elemental metal and Co and in terms of oxide
Drive body dosage mass ratio is 5-40:60-95;It can also be 10- further it is possible to further be 8-25:75-92
16:84-90.
The dosage of a preferred embodiment of the invention, the presoma of the presoma and Co of Fe makes, obtained
In composition, in terms of oxide, the weight ratio of Fe and Co are preferably 1:(0.1-10), further preferably 1:(0.3-3), more into
One step is preferably 1:(0.4-2).Using the proportion of currently preferred Fe and Co, Fe and Co is enabled preferably to play collaboration
Effect is more advantageous to the catalyzed conversion activity for improving composition to ortho states nitride.
, according to the invention it is preferred to which the solid content of the slurries is 8-30 weight %.
According to the present invention, the presoma of inorganic oxide carrier, the presoma of Fe, the presoma of Co and water are mixed to described
Close mashing mode there is no particular limitation, to the presoma of inorganic oxide carrier, the presoma of Fe, Co presoma and water
There is no particular limitation for hybrid mode, obtains slurries as long as three is mixed then to be beaten.
In the present invention, the spray drying can be carried out according to conventional technical means in the art, and the present invention does not have this
Special to limit, the average grain diameter for the particle that the condition of preferably spray drying obtains spray drying is 60-75 μm, partial size point
Cloth range is mainly at 20-100 μm, it is further preferred that the condition of spray drying to be spray-dried in obtained particle, partial size
50% or more is accounted for for 40-80 μm of particle.
According to the present invention, the roasting can be effectively improved using conventional technical means in the art can reduce CO and NOx
The composition of discharge is to NH3The catalyzed conversion activity of equal reduction-states nitride, but in order to further improve can reduce CO and
The composition of NOx emission is to NH3The catalyzed conversion activity and hydrothermal stability of equal reduction-states nitride, the preferably described roasting are containing
It is carried out under carbon atmosphere.The present inventor is found surprisingly that in the course of the research, and the roasting is carried out under carbon-containing atmosphere,
It can enable to reduce the composition of CO and NOx emission to NH3The catalyzed conversion activity and hydro-thermal of equal reduction-states nitride are steady
It is qualitative to significantly improve.Active raising is converted into carbide by oxide with active component and reduction-state is related, and hydro-thermal
The improvement of stability may further promote the bonding of each active component in composition with high-temperature process, merge and be crosslinked with
It closes.It can be seen that, occurs the peak type of apparent cementite peak type and simple substance cobalt after processing from XRD comparison spectrogram.Specifically
, as shown in Figure 1, having Al at 45.5 ° in the XRD spectra of the composition S-5 handled without carbon-containing atmosphere2O3And
Co2AlO4Diffraction maximum, and pass through carbon-containing atmosphere processing composition S-1 XRD spectra in, not only have at 45.5 ° or so
Al2O3And Co2AlO4Diffraction maximum, and there are obvious diffraction maximums in 42.6 ° or so places and 45.0 ° or so places, be attributed to by
The composition S-1 of carbon-containing atmosphere processing is FeC (Fe occur at 42.6 °, 44.9 ° in 2 θ3C and Fe7C3) diffraction maximum.In addition,
It is compared with composition S-5, diffraction maximum occurs at 44.2 ° in composition S-1, and 2 θ are that the diffraction maximum at 44.2 ° is spreading out for simple substance cobalt
Penetrate peak.
It should be noted that Fig. 1 only lists the XRD spectra within the scope of 41 ° -50 °, be mainly used for illustrating in composition Fe and
The existence form of Co.Outside 41 ° of -50 ° of ranges, there is also other diffraction maximums, for example, FeO (2 θ are at 37 °, 65 ° and 59 °)
With the diffraction maximum of CoO (2 θ are at 37 °, 65 ° and 31 °), the present invention is not further explained this.
A preferred embodiment of the invention, the condition of the roasting include: to carry out under carbon-containing atmosphere, temperature
It is 400-1000 DEG C, preferably 450-650 DEG C, further preferably 500-650 DEG C, time 0.1-10h, preferably 1-3h.
There is no particular limitation for pressure of the present invention to the roasting, can carry out under normal pressure.Such as it can be in 0.01-
(absolute pressure) is carried out under 1Mpa.
In the present invention, the carbon-containing atmosphere is provided by the gas containing carbon elements, and the gas of the carbon elements is excellent
Gas of the choosing selected from the carbon elements with reproducibility, at least one of further preferably CO, methane and ethane are optimal
It is selected as CO.
According to the present invention, part inert gas, the indifferent gas can also be contained in the gas containing carbon elements
Body can be various inert gases commonly used in the art, and the preferably described inert gas is in nitrogen, argon gas and helium
At least one, further preferably nitrogen.
A preferred embodiment of the invention, the carbon-containing atmosphere are mentioned by the mixed gas containing CO and nitrogen
For, and the volumetric concentration of CO is preferably 1-20% in carbon-containing atmosphere, further preferably 4-10%.Using preferred reality of the invention
Mode is applied, processing requirement can be not only better met, additionally it is possible to guarantee the safety of operator.
In the present invention, the roasting can carry out in roaster, the roaster can be catalytic cracking catalyst and
Rotary roaster used in auxiliary agent production.The gas of carbon elements is inverse with the solid material in roaster in roaster
Stream contact.
The present invention also provides the compositions that can reduce CO and NOx emission as made from above-mentioned preparation method.
It can reduce as made from above-mentioned preparation method in CO and the composition of NOx emission and make containing Fe and Co, Fe and Co
It is used cooperatively for metallic element, makes it possible to reduce the composition of CO and NOx emission to NH3The catalysis of equal reduction-states nitride turns
Change activity to significantly improve, and the composition for making it possible to reduce CO and NOx emission has preferable hydrothermal stability.
The present invention also provides application of the above-mentioned composition that can reduce CO and NOx emission in fume treatment.This hair
The composition of bright offer can be used for handling any required flue gas for reducing CO and NOx emission.
The present invention also provides the above-mentioned compositions that can reduce CO and NOx emission in regeneration fume from catalytic cracking processing
Application.The above-mentioned composition that can reduce CO and NOx emission is especially suitable for reducing complete regenerated flue gas and incomplete regen-eration
The discharge of CO and NOx in flue gas, the composition provided by the invention that can reduce CO and NOx emission are more applicable for reducing endless
The discharge of CO and NOx in full regenerated flue gas.Therefore, the present invention provides the above-mentioned compositions that can reduce CO and NOx emission to exist
Application in catalytic cracking incomplete regen-eration fume treatment.
The present invention also provides a kind of fluidized catalytic cracking methods, this method comprises: by hydrocarbon ils and catalyst haptoreaction,
Then the catalyst after haptoreaction is regenerated, the catalyst include catalytic cracking catalyst and can reduce CO and
The composition of NOx emission, the composition that can reduce CO and NOx emission can reduce CO and NOx row for the present invention is above-mentioned
The composition put.
The fluidized catalytic cracking method provided according to the present invention, it is preferable that on the basis of the total amount of catalyst, it is described can
Reduce the content of the composition of CO and NOx emission for 0.05-5 weight %, further preferably 0.1-3 weight %, further
Preferably 0.5-2.5 weight %.
The fluidized catalytic cracking method provided according to the present invention, it is preferable that by hydrocarbon ils and catalyst haptoreaction, then will
Catalyst after haptoreaction carries out incomplete regen-eration, it is further preferred that oxygen in the flue gas that the incomplete regen-eration generates
Concentration be not more than 0.5 volume %.
There is no particular limitation to the hydrocarbon ils by the present invention, can be the processed conventionally various hydrocarbon ils in catalytic cracking field,
Such as vacuum gas oil (VGO), reduced crude, decompression residuum, deasphalted oil, wax tailings or hydrotreating oil.
There is no particular limitation to the catalytic cracking catalyst by the present invention, can be in existing catalytic cracking catalyst
One or more, can be commercially available or prepare according to existing method.
It is provided by the invention to can reduce CO and the composition of NOx emission can be a kind of independent particle, it is also possible to
As catalyst cracking particles part of the whole.It is preferred that the combination provided by the invention that can reduce CO and NOx emission
Object is used cooperatively as a kind of independent particle with catalyst cracking particles.
In the present invention, in the case of no specified otherwise, the ppm refers to volumetric concentration.
In fluidized catalytic cracking method of the present invention, the method for the catalyst regeneration does not have compared with existing regeneration method
There are particular/special requirement, including partial regeneration, incomplete regen-eration and complete regenerative operation mode.The regeneration method can be found in Chen Junwu
Chief editor, Sinopec publishing house page 1234 page -1343 of " catalytic cracking process and the engineering " published in 2005.It is preferred that regeneration temperature
Degree is 650 DEG C -730 DEG C.
Below by way of the specific embodiment implementation process that the present invention will be described in detail and generated beneficial effect, it is intended to help
Where reader more clearly understands Spirit Essence of the invention, but any restriction cannot be constituted to practical range of the invention.
It can reduce constituent content in CO and the composition of NOx emission in following embodiment and be all made of X-ray fluorescence spectra
(XRF) method measures, and referring specifically to petrochemical analysis method (RIPP experimental method), Yang Cui is waited surely and compiled, Science Press 1990
Year publishes.The composition of CO and NOx emission be can reduce in embodiment using X-ray diffractometer (Siemens company D5005 type)
XRD spectra is obtained, structure determination, Cu target, K α radiation, solid probe, tube voltage 40kV, tube current 40mA are carried out.
It is raw materials used in embodiment and comparative example: cobalt nitrate [Co (NO3)2·6H2O] it is to analyze pure, ferric nitrate [Fe
(NO3)3·9H2O] it is that analysis is pure, it is produced by Sinopharm Chemical Reagent Co., Ltd.;Boehmite is technical grade product,
64 weight % of alumina content, pore volume are 0.31 ml/g, Shandong Aluminium Industrial Corp's production;Hydrochloric acid, concentration are 36.5 weights
% is measured, pure, Beijing Chemical Plant's production is analyzed;Carbon monoxide, concentration are 10 volume %, and nitrogen does Balance Air, and Beijing helium Pu Bei divides
The production of gas industry Co., Ltd;Catalytic cracking catalyst industrial products (Cat-A, catalyst trade mark CGP-1), Na2O content
0.24 weight %, RE2O3Content 3.2 weight %, Al2O348.0 weight % of content, 67 microns of average grain diameter, Sinopec is catalyzed
The production of agent Co., Ltd.
Embodiment 1
(1) 2.62kg boehmite is added to be beaten in 14.2kg deionized water and is dispersed, 238mL hydrochloric acid is then added
It is acidified 15min, aluminium stone colloid is obtained, by the ferric nitrate in terms of metal oxide (with Fe2O3Meter, similarly hereinafter) 100g, cobalt nitrate (with
Co2O3Meter, similarly hereinafter) 100g is added stirring in 3500mL water and is added thereto aluminium stone colloid to abundant dissolution, stirs 20min, obtain
To slurries, the slurries are spray-dried, (average grain diameter is 65 μm to the particle 100g for taking spray drying to obtain, and partial size is
40-80 μm of particle accounts for 60%, similarly hereinafter) it is transferred in tube furnace, CO concentration is passed through as 10 volume % with the flow of 100mL/min
CO/N2Mixed gas handles 1.5h at 600 DEG C, obtains composition S-1.
Each component assay result is listed in table 1 in composition S-1.
XRD analysis is carried out to composition S-1, XRD spectra as shown in Figure 1, as can be seen from Figure 1,
There is Al at 45.5 ° in the XRD spectra of the composition S-5 handled without carbon-containing atmosphere2O3And Co2AlO4's
Diffraction maximum, and pass through in the XRD spectra of the composition S-1 of carbon-containing atmosphere processing, not only there is Al at 45.5 ° or so2O3And
Co2AlO4Diffraction maximum, and there are obvious diffraction maximums in 42.6 ° or so places and 45.0 ° or so places, are attributed to by carbon-containing atmosphere
The composition S-1 of processing is FeC (Fe occur at 42.6 °, 44.9 ° in 2 θ3C and Fe7C3) diffraction maximum.In addition, and composition
S-5 is compared, and diffraction maximum occurs at 44.2 ° in composition S-1, and 2 θ are the diffraction maximum that diffraction maximum at 44.2 ° is simple substance cobalt.
It should be noted that Fig. 1 only lists the XRD spectra within the scope of 41 ° -50 °, be mainly used for illustrating in composition Fe and
The existence form of Co.Outside 41 ° of -50 ° of ranges, there is also other diffraction maximums, for example, FeO (2 θ are at 37 °, 65 ° and 59 °)
With the diffraction maximum of CoO (2 θ be 37 °, 65 ° and 31 ° place), the diffraction maximum of diffraction maximum and FeC and simple substance Co outside 41 ° of -50 ° of ranges
Unrelated, the present invention does not do further spectrum elucidation to this.
Embodiment 2
(1) 2.56kg boehmite is added to be beaten in 13.9kg deionized water and is dispersed, 232mL hydrochloric acid is then added
It is acidified 15min, obtains aluminium stone colloid, ferric nitrate 140g, the cobalt nitrate 60g in terms of metal oxide are added in 3500mL water and stirred
It mixes to abundant dissolution, aluminium stone colloid is added thereto, stir 20min, obtain slurries, the slurries are spray-dried, are taken
It is spray-dried obtained particle 100g to be transferred in tube furnace, being passed through CO concentration with the flow of 100mL/min is 10 volume %'s
CO/N2Mixed gas handles 3h at 500 DEG C, obtains composition S-2.
Each component assay result is listed in table 1 in composition S-2.The XRD analysis result and embodiment 1 of composition S-2
It is similar.In the XRD spectra of composition S-2 by carbon-containing atmosphere processing, not only there is Al at 45.5 ° or so2O3And Co2AlO4
Diffraction maximum, and there are obvious diffraction maximums in 42.6 ° or so places and 45.0 ° or so places, are attributed to handle by carbon-containing atmosphere
Composition S-2 is FeC (Fe occur at 42.6 °, 44.9 ° in 2 θ3C and Fe7C3) diffraction maximum.In addition, with composition S-5 phase
Occurs diffraction maximum at 44.2 ° than, composition S-2,2 θ are the diffraction maximum that diffraction maximum at 44.2 ° is simple substance cobalt.
Embodiment 3
(1) 2.34kg boehmite is added to be beaten in 12.7kg deionized water and is dispersed, 212mL hydrochloric acid is then added
It is acidified 15min, obtains aluminium stone colloid, ferric nitrate 100g, the cobalt nitrate 200g in terms of metal oxide are added in 4000mL water
Aluminium stone colloid is added thereto to abundant dissolution, after stirring 20min, obtains slurries, the slurries are done by spraying by stirring
Dry, the particle 100g for taking spray drying to obtain is transferred in tube furnace, is passed through CO concentration with the flow of 100mL/min as 10 bodies
The CO/N of product %2Mixed gas handles 1h at 650 DEG C, obtains composition S-3.
Each component assay result is listed in table 1 in composition S-3.The XRD analysis result and embodiment 1 of composition S-3
It is similar.In the XRD spectra of composition S-3 by carbon-containing atmosphere processing, not only there is Al at 45.5 ° or so2O3And Co2AlO4
Diffraction maximum, and there are obvious diffraction maximums in 42.6 ° or so places and 45.0 ° or so places, are attributed to handle by carbon-containing atmosphere
Composition S-3 is FeC (Fe occur at 42.6 °, 44.9 ° in 2 θ3C and Fe7C3) diffraction maximum.In addition, with composition S-5 phase
Occurs diffraction maximum at 44.2 ° than, composition S-3,2 θ are the diffraction maximum that diffraction maximum at 44.2 ° is simple substance cobalt.
Embodiment 4
(1) 2.25kg boehmite is added to be beaten in 12.2kg deionized water and is dispersed, 204mL hydrochloric acid is then added
It is acidified 15min, obtains aluminium stone colloid, ferric nitrate 200g, the cobalt nitrate 120g in terms of metal oxide are added in 3500mL water
Aluminium stone colloid is added thereto to abundant dissolution, after stirring 20min, obtains slurries, the slurries are done by spraying by stirring
Dry, the particle 100g for taking spray drying to obtain is transferred in tube furnace, and being passed through CO concentration with the flow of 100mL/min is 10%
CO/N2Mixed gas handles 1.5h at 600 DEG C, obtains composition S-4.
Each component assay result is listed in table 1 in composition S-4.The XRD analysis result and embodiment 1 of composition S-4
It is similar.In the XRD spectra of composition S-4 by carbon-containing atmosphere processing, not only there is Al at 45.5 ° or so2O3And Co2AlO4
Diffraction maximum, and there are obvious diffraction maximums in 42.6 ° or so places and 45.0 ° or so places, are attributed to handle by carbon-containing atmosphere
Composition S-4 is FeC (Fe occur at 42.6 °, 44.9 ° in 2 θ3C and Fe7C3) diffraction maximum.In addition, with composition S-5 phase
Occurs diffraction maximum at 44.2 ° than, composition S-4,2 θ are the diffraction maximum that diffraction maximum at 44.2 ° is simple substance cobalt.
Embodiment 5
According to the method for embodiment 1, unlike, the CO/N for being 10 volume % by CO concentration2Mixed gas replaces with sky
Gas obtains composition S-5.
Each component assay result is listed in table 1 in composition S-5.XRD analysis is carried out to composition S-5, from XRD spectra
(as shown in Figure 1) can be seen that, 2 θ be 42.6 °, 44.2 ° and 44.9 ° at without obvious diffraction maximum, it was demonstrated that in composition S-5 Fe and
Co exists in the form of an oxide.
Embodiment 6
According to the method for embodiment 1, unlike, the dosage of the ferric nitrate in terms of metal oxide is 50g, cobalt nitrate
Dosage is 150g, obtains composition S-6.
Each component assay result is listed in table 1 in composition S-6.The XRD analysis result and embodiment 1 of composition S-6
It is similar.In the XRD spectra of composition S-6 by carbon-containing atmosphere processing, not only there is Al at 45.5 ° or so2O3And Co2AlO4
Diffraction maximum, and there are obvious diffraction maximums in 42.6 ° or so places and 45.0 ° or so places, are attributed to handle by carbon-containing atmosphere
Composition S-6 is FeC (Fe occur at 42.6 °, 44.9 ° in 2 θ3C and Fe7C3) diffraction maximum.In addition, with composition S-5 phase
Occurs diffraction maximum at 44.2 ° than, composition S-6,2 θ are the diffraction maximum that diffraction maximum at 44.2 ° is simple substance cobalt.
Embodiment 7
According to the method for embodiment 1, unlike, the dosage of the ferric nitrate in terms of metal oxide is 150g, cobalt nitrate
Dosage be 50g, obtain composition S-7.
Each component assay result is listed in table 1 in composition S-7.The XRD analysis result and embodiment 1 of composition S-7
It is similar.In the XRD spectra of composition S-7 by carbon-containing atmosphere processing, not only there is Al at 45.5 ° or so2O3And Co2AlO4
Diffraction maximum, and there are obvious diffraction maximums in 42.6 ° or so places and 45.0 ° or so places, are attributed to handle by carbon-containing atmosphere
Composition S-7 is FeC (Fe occur at 42.6 °, 44.9 ° in 2 θ3C and Fe7C3) diffraction maximum.In addition, with composition S-5 phase
Occurs diffraction maximum at 44.2 ° than, composition S-7,2 θ are the diffraction maximum that diffraction maximum at 44.2 ° is simple substance cobalt.
Embodiment 8
According to the method for embodiment 1, unlike, the ethane/nitrogen mixed gas replacement for being 10% with ethane concentration is dense
The CO/N that degree is 10%2Mixed gas obtains composition S-8.
Each component assay result is listed in table 1 in composition S-8.The XRD analysis result and embodiment 1 of composition S-8
It is similar.In the XRD spectra of composition S-8 by carbon-containing atmosphere processing, not only there is Al at 45.5 ° or so2O3And Co2AlO4
Diffraction maximum, and there are obvious diffraction maximums in 42.6 ° or so places and 45.0 ° or so places, are attributed to handle by carbon-containing atmosphere
Composition S-8 is FeC (Fe occur at 42.6 °, 44.9 ° in 2 θ3C and Fe7C3) diffraction maximum.In addition, with composition S-5 phase
Occurs diffraction maximum at 44.2 ° than, composition S-8,2 θ are the diffraction maximum that diffraction maximum at 44.2 ° is simple substance cobalt.
Comparative example 1
According to the method for embodiment 1, unlike, in terms of metal oxide, nitric acid is replaced with the ferric nitrate of phase homogenous quantities
Cobalt obtains composition D-1.
Each component assay result is listed in table 1 in composition D-1.
Comparative example 2
According to the method for embodiment 1, unlike, in terms of metal oxide, nitric acid is replaced with the cobalt nitrate of phase homogenous quantities
Iron obtains composition D-2.
Each component assay result is listed in table 1 in composition D-2.
Comparative example 3
Comparative composition is prepared referring to US6800586 the method.The gama-alumina microsphere carrier of 34.4 grams of drying is taken,
The solution oxide impregnation aluminium microballoon being made into 10.09g cerous nitrate, 2.13g lanthanum nitrate and 18mL water, after dipping through 120 DEG C of drying,
After 600 DEG C roast 1 hour, then the solution dipping being made into 2.7g copper nitrate and 18mL water, through 120 DEG C of drying, 600 DEG C of roastings 1
Hour obtains composition D-3.In composition D-3, on the basis of composition D-3 total amount, in terms of oxide, RE2O3Content be 12
The content of weight %, CuO are 2.3 weight % (RE represents lanthanide element).
Table 1
Note: for each component content in terms of oxide, unit is weight %.
Test example 1
This test example is used to reduce the composition that can reduce CO and NOx emission that above-described embodiment and comparative example provide
Under aerobic conditions in incomplete regen-eration flue gas CO and NOx emission effect.
The composition and above-mentioned catalytic cracking catalyst (Cat-A) blending that CO and NOx emission will be reduced uniformly (can
The composition for reducing CO and NOx emission accounts for the 2.2 of the composition and catalytic cracking catalyst total amount that can reduce CO and NOx emission
Weight %) catalytic cracking reaction-regeneration evaluation is carried out after aging 12h under 800 DEG C, 100% water vapour atmosphere.
The catalytic cracking reaction-regeneration evaluation carries out on small fixed simulated flue gas drop NOx device, through aging
Loaded catalyst is 10g, and reaction temperature is 650 DEG C, and feed gas volume flow is 1500mL/min.Unstripped gas contains 3.7 bodies
The CO of product %, the oxygen of 0.5 volume %, the NH of 800ppm3, surplus N2.Gaseous product is analyzed by online infrared spectrum analyser,
NH after being reacted3, NOx and CO concentration, be as a result listed in table 2.
Table 2
As can be seen from Table 2, using the composition provided by the invention that can reduce CO and NOx emission for being catalyzed
Cracking process incomplete regen-eration process (aerobic conditions), the composition tool that can reduce CO and NOx emission provided compared with comparative example
Having preferably reduces CO, NH3It and is that can reduce CO and NOx after aging used in evaluation procedure with NOx emission performance
The composition of discharge, composition removing CO, NH that can reduce CO and NOx emission after aging3It is still higher with NOx activity, because
This, the CO and the composition of NOx emission provided by the invention of can reduce has preferable hydrothermal stability.
Test example 2
This test example is used to reduce the composition that can reduce CO and NOx emission that above-described embodiment and comparative example provide
Under oxygen free condition in incomplete regen-eration flue gas CO and NOx emission effect.
According to the method for test example 1, the difference is that, unstripped gas contains the CO of 3.7 volume %, the NH of 800ppm3, surplus is
N2.NH after being reacted3, NOx and CO concentration, be as a result listed in table 3.
Table 3
From table 3 it can be seen that even if handling incomplete regen-eration flue gas under anaerobic, it is provided by the invention to can reduce
CO and the composition of NOx emission have compared with the composition that can reduce CO and NOx emission that comparative example provides and preferably reduce CO
And NH3Emission performance, and be the composition that can reduce CO and NOx emission after aging, aging used in evaluation procedure
The composition removing CO and NH that can reduce CO and NOx emission afterwards3Activity is still higher, therefore, provided by the invention to drop
Low CO and the composition of NOx emission have preferable hydrothermal stability.
It can be seen that the composition provided by the invention that can reduce CO and NOx emission from table 2 and 3 data of table to be suitable for
Incomplete regen-eration under aerobic and oxygen free condition has preferable regenerated flue gas processing capacity.Particularly, from embodiment 1 and in fact
The comparison of example 5 is applied as can be seen that carrying out under carbon-containing atmosphere using currently preferred roasting, makes it possible to reduce CO and NOx row
The composition properties put further increase;From embodiment 1 with embodiment 6, the comparison of embodiment 7 as can be seen that excellent using the present invention
Fe and the Co mass ratio of choosing, the composition properties for making it possible to reduce CO and NOx emission further increase;From embodiment 1 and in fact
The comparison of example 8 is applied as can be seen that being handled using the present invention preferably carbon-containing atmosphere, makes it possible to reduce the group of CO and NOx emission
Closing physical property can be further improved;From embodiment 1 and comparative example 1-3 comparison as can be seen that the present invention is by making Fe and Co cooperation
With the composition properties for making it possible to reduce CO and NOx emission increase substantially.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, this
A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (17)
1. a kind of composition that can reduce CO and NOx emission, which is characterized in that the composition by inorganic oxide carrier and
The Fe and Co composition of load on an inorganic, on the basis of the total amount of composition, the inorganic oxide carrier
Content is 60-95 weight %, and in terms of oxide, the total content of Fe and Co are 5-40 weight %.
2. composition according to claim 1, wherein on the basis of the total amount of composition, the inorganic oxide carrier
Content be 75-92 weight %, in terms of oxide, the total content of the Fe and Co is 8-25 weight %;
Preferably, the content of the inorganic oxide carrier is 84-90 weight %, and in terms of oxide, the Fe and Co's always contains
Amount is 10-16 weight %.
3. composition according to claim 1 or 2, wherein in terms of oxide, the weight ratio of Fe and Co are 1:(0.1-
10), preferably 1:(0.3-3), further preferably 1:(0.4-2).
4. composition described in any one of -3 according to claim 1, wherein the Fe in the composition is at least partly with carbon
The form for changing iron exists;Co in the composition exists at least partly in the form of simple substance cobalt.
5. composition according to claim 4, wherein be 42.6 °, 44.2 ° in 2 θ in the XRD spectrum of the composition
With 44.9 ° at have diffraction maximum.
6. composition described in any one of -5 according to claim 1, wherein the inorganic oxide carrier is selected from oxidation
At least one of aluminium, silica-alumina, zeolite, spinelle, kaolin, diatomite, perlite and perovskite;
Preferably, the inorganic oxide carrier is selected from least one of aluminium oxide, spinelle and perovskite, further preferably
For aluminium oxide.
7. a kind of preparation method for the composition that can reduce CO and NOx emission, which is characterized in that this method comprises:
The presoma of inorganic oxide carrier, the presoma of Fe, the presoma of Co and water are mixed with beating, slurries are obtained, by institute
It states slurries to be spray-dried, then be roasted;
Wherein, the dosage of the presoma of the presoma of inorganic oxide carrier, the presoma of Fe and Co makes, with the total of composition
On the basis of amount, the content of the inorganic oxide carrier is 60-95 weight %, and in terms of oxide, the total content of Fe and Co are 5-
40 weight %.
8. preparation method according to claim 7, wherein the condition of the roasting includes: to carry out under carbon-containing atmosphere, temperature
Degree be 400-1000 DEG C, preferably 450-650 DEG C, time 0.1-10h, preferably 1-3h;
Preferably, the carbon-containing atmosphere is provided by the gas containing carbon elements, and the gas of the carbon elements is selected from CO, methane
At least one of with ethane, preferably CO;
Preferably, the volumetric concentration of CO is 1-20%, preferably 4-10% in carbon-containing atmosphere.
9. preparation method according to claim 7 or 8, wherein the presoma of inorganic oxide carrier, the presoma of Fe and
The dosage of the presoma of Co makes, and on the basis of the total amount of composition, the content of the inorganic oxide carrier is 75-92 weight
% is measured, in terms of oxide, the total content of the Fe and Co are 8-25 weight %;
Preferably, the content of the inorganic oxide carrier is 84-90 weight %, and in terms of oxide, the Fe and Co's always contains
Amount is 10-16 weight %.
10. the preparation method according to any one of claim 7-9, wherein the presoma of the presoma and Co of Fe
Dosage makes, and in composition obtained, in terms of oxide, the weight ratio of Fe and Co are 1:(0.1-10), preferably 1:(0.3-
3), further preferably 1:(0.4-2).
11. preparation method according to any one of claims of claim 7-10, wherein the inorganic oxide carrier is selected from oxygen
Change at least one of aluminium, silica-alumina, zeolite, spinelle, kaolin, diatomite, perlite and perovskite;It is preferred that
Ground, the inorganic oxide carrier are selected from least one of aluminium oxide, spinelle and perovskite, further preferably aoxidize
Aluminium;
Preferably, before being mixed with beating, acidification peptization processing is carried out to the presoma of aluminium oxide, it is further preferred that described
The acid that acidification peptization processing uses is hydrochloric acid, and the condition of the acidification peptization processing includes: acid-aluminum ratio 0.12-0.22:1, time
For 20-40min.
12. the preparation method according to any one of claim 7-11, wherein the presoma of the Fe and the forerunner of Co
Body is respectively selected from the water soluble salt of Fe and Co.
13. can reduce the combination of CO and NOx emission made from the preparation method as described in any one of claim 7-12
Object.
14. can reduce the composition of CO and NOx emission described in any one of claim 1-6 and 13 in fume treatment
Application.
15. can reduce described in any one of claim 1-6 and 13 composition of CO and NOx emission catalytic cracking again
Application in raw fume treatment.
16. a kind of fluidized catalytic cracking method, this method comprises: by hydrocarbon ils and catalyst haptoreaction, then by haptoreaction
Catalyst afterwards is regenerated, and the catalyst includes catalytic cracking catalyst and the composition that can reduce CO and NOx emission,
It is characterized in that, the CO and the composition of NOx emission of can reduce is energy described in any one of claim 1-6 and 14
Enough reduce the composition of CO and NOx emission.
17. fluidized catalytic cracking method according to claim 16, wherein on the basis of the total amount of catalyst, the energy
The content for enough reducing the composition of CO and NOx emission is 0.05-5 weight %, preferably 0.1-3 weight %.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710543245.2A CN109201099B (en) | 2017-07-05 | 2017-07-05 | Composition capable of reducing CO and NOx emission, preparation method and application thereof, and fluidized catalytic cracking method |
US16/626,742 US11529612B2 (en) | 2017-07-05 | 2018-07-05 | Composition capable of reducing CO and NOx emissions, preparation method therefor and use thereof, and fluid catalytic cracking method |
PCT/CN2018/094584 WO2019007381A1 (en) | 2017-07-05 | 2018-07-05 | Composition capable of reducing co and nox emissions, preparation method therefor and use thereof, and fluid catalytic cracking method |
AU2018298192A AU2018298192B2 (en) | 2017-07-05 | 2018-07-05 | Composition capable of reducing CO and NOx emissions, preparation method therefor and use thereof, and fluid catalytic cracking method |
JP2020500124A JP7114688B2 (en) | 2017-07-05 | 2018-07-05 | COMPOSITION CAPABLE OF REDUCING CO AND NOx EMISSIONS, PRODUCTION METHOD AND USE THEREOF, AND FLUID CATALYTIC Cracking Process |
RU2020104054A RU2772281C2 (en) | 2017-07-05 | 2018-07-05 | Composition capable of reducing co and nox emissions, its production method and use, and method for catalytic cracking in fluidized layer |
TW107123246A TWI786147B (en) | 2017-07-05 | 2018-07-05 | Composition capable of reducing CO and NOx emissions, its preparation method and application, and fluidized catalytic cracking method |
EP18827377.5A EP3693085A4 (en) | 2017-07-05 | 2018-07-05 | Composition capable of reducing co and nox emissions, preparation method therefor and use thereof, and fluid catalytic cracking method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710543245.2A CN109201099B (en) | 2017-07-05 | 2017-07-05 | Composition capable of reducing CO and NOx emission, preparation method and application thereof, and fluidized catalytic cracking method |
Publications (2)
Publication Number | Publication Date |
---|---|
CN109201099A true CN109201099A (en) | 2019-01-15 |
CN109201099B CN109201099B (en) | 2020-06-16 |
Family
ID=64992697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710543245.2A Active CN109201099B (en) | 2017-07-05 | 2017-07-05 | Composition capable of reducing CO and NOx emission, preparation method and application thereof, and fluidized catalytic cracking method |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN109201099B (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102371165A (en) * | 2010-08-26 | 2012-03-14 | 中国石油化工股份有限公司 | Low-bulk-density composition for reducing discharge of regenerated flue gases CO and NOx during FCC (Fluid Catalytic Cracking) |
CN104302392A (en) * | 2012-08-27 | 2015-01-21 | 三井金属矿业株式会社 | Exhaust gas purifying catalyst |
-
2017
- 2017-07-05 CN CN201710543245.2A patent/CN109201099B/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102371165A (en) * | 2010-08-26 | 2012-03-14 | 中国石油化工股份有限公司 | Low-bulk-density composition for reducing discharge of regenerated flue gases CO and NOx during FCC (Fluid Catalytic Cracking) |
CN104302392A (en) * | 2012-08-27 | 2015-01-21 | 三井金属矿业株式会社 | Exhaust gas purifying catalyst |
Also Published As
Publication number | Publication date |
---|---|
CN109201099B (en) | 2020-06-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101311248A (en) | Composition for reducing discharge of NOx in FCC stack gas | |
CN111346657B (en) | Regular structure catalyst, preparation method and application thereof, and treatment method of incomplete regenerated flue gas | |
CN109201079A (en) | It can reduce CO and NOxComposition of discharge and its preparation method and application and fluidized catalytic cracking method | |
CN105562031A (en) | Catalyst for reducing content of NOx in FCC smoke | |
TWI786147B (en) | Composition capable of reducing CO and NOx emissions, its preparation method and application, and fluidized catalytic cracking method | |
CN109201080B (en) | Composition capable of reducing CO and NOx emission, preparation method and application thereof, and fluidized catalytic cracking method | |
CN109201097A (en) | It can reduce CO and NOxComposition of discharge and its preparation method and application and fluidized catalytic cracking method | |
CN106925295A (en) | A kind of co-catalyst of reduction FCC regenerated flue gas pollutant emissions and its application | |
CN109201058A (en) | It can reduce CO and NOxComposition of discharge and its preparation method and application and fluidized catalytic cracking method | |
CN106925289A (en) | Reduce NO in FCC flue gasesXCatalyst of content and preparation method thereof | |
CN109201099A (en) | It can reduce composition of CO and NOx emission and its preparation method and application and fluidized catalytic cracking method | |
CN111346647B (en) | Regular structure catalyst, preparation method and application thereof, and treatment method of incomplete regenerated flue gas | |
CN109201076A (en) | It can reduce composition of CO and NOx emission and its preparation method and application and fluidized catalytic cracking method | |
CN109201075A (en) | It can reduce CO and NOxComposition of discharge and its preparation method and application and fluidized catalytic cracking method | |
CN109201078A (en) | It can reduce CO and NOxComposition of discharge and its preparation method and application and fluidized catalytic cracking method | |
CN109201098A (en) | It can reduce CO and NOxComposition of discharge and its preparation method and application and fluidized catalytic cracking method | |
CN111346656B (en) | Regular structure catalyst, preparation method and application thereof, and treatment method of incomplete regenerated flue gas | |
CN111346655B (en) | Regular structure catalyst, preparation method and application thereof, and treatment method of incomplete regenerated flue gas | |
CN106807372A (en) | A kind of catalyst for reducing regeneration fume from catalytic cracking pollutant emission and its application |
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 |