CN106955733A - Desulphurization denitration catalyst of CuFeNiCo/ZSM 5 and preparation method thereof - Google Patents

Desulphurization denitration catalyst of CuFeNiCo/ZSM 5 and preparation method thereof Download PDF

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CN106955733A
CN106955733A CN201710121793.6A CN201710121793A CN106955733A CN 106955733 A CN106955733 A CN 106955733A CN 201710121793 A CN201710121793 A CN 201710121793A CN 106955733 A CN106955733 A CN 106955733A
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zsm
catalyst
cufenico
desulphurization
gross weight
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CN201710121793.6A
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李启云
吴杰豪
周曙
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湖南云平环保科技有限公司
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Priority to CN201710121793.6A priority Critical patent/CN106955733A/en
Publication of CN106955733A publication Critical patent/CN106955733A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8637Simultaneously removing sulfur oxides and nitrogen oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J29/00Catalysts comprising molecular sieves
    • B01J29/04Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/40Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively
    • B01J29/42Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively containing iron group metals, noble metals or copper
    • B01J29/46Iron group metals or copper
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2229/00Aspects of molecular sieve catalysts not covered by B01J29/00
    • B01J2229/10After treatment, characterised by the effect to be obtained
    • B01J2229/18After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself
    • B01J2229/186After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself not in framework positions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2229/00Aspects of molecular sieve catalysts not covered by B01J29/00
    • B01J2229/30After treatment, characterised by the means used
    • B01J2229/40Special temperature treatment, i.e. other than just for template removal

Abstract

The present invention discloses a kind of desulphurization denitration catalyst of CuFeNiCo/ZSM 5.The desulphurization denitration catalyst of CuFeNiCo/ZSM 5 includes active component, co-catalyst and carrier, and by percentage to the quality, the carrier is the ZSM 5 for accounting for gross weight 80 85%;The active component includes accounting for the CuO of gross weight 5 10% and accounts for the FeO of gross weight 5 10%;The co-catalyst includes accounting for the NiO of gross weight 1 3% and accounts for the CoO of gross weight 1 3%.The desulphurization denitration catalyst of CuFeNiCo/ZSM 5 that the present invention is provided, denitrification efficiency is high.The present invention also provides a kind of preparation method of the desulphurization denitration catalyst of CuFeNiCo/ZSM 5.

Description

CuFeNiCo/ZSM-5 desulphurization denitration catalyst and preparation method thereof

【Technical field】

The present invention relates to filed of flue gas purification, and in particular to a kind of CuFeNiCo/ZSM-5 desulphurization denitrations catalyst and its system Preparation Method.

【Background technology】

Main pollutant is SO in the flue gas that combustion of fossil fuel is discharged2And NOx, serious is caused to air Pollution.With the fast development of Chinese national economy, SO2And NOxDischarge capacity be continuously increased, environmental problem turn into influence me The key issue of state's national economy sustainable development.Therefore, SO2And NOxEffective purification by extensive concern.

Dedusting, desulphurization and denitration are often respectively completed in multiple autonomous systems in domestic and international existing flue gases purification, Not only floor space is big, and investment, operating cost height, and with the popularization of flue gas desulfurization, NO_x in Air Environment harm Shared ratio will be increasing.Therefore, simultaneous SO_2 and NO removal technology is increasingly subject to the attention of various countries.

In correlation technique, desulphurization denitration catalyst can realize removing SO simultaneously2And NOx, with preferable application prospect.So And, the desulfurization off sulfide effect of current desulphurization denitration catalyst is not good, also fails to realize large-scale industrialization application so far.

Therefore, a kind of new desulphurization denitration catalyst solution above-mentioned technical problem is developed significant.

【The content of the invention】

The purpose of the present invention is to overcome above-mentioned technical problem there is provided a kind of high CuFeNiCo/ZSM-5 of denitrification efficiency Desulphurization denitration catalyst and preparation method thereof.

The technical scheme is that:

A kind of CuFeNiCo/ZSM-5 desulphurization denitrations catalyst, including active component, co-catalyst and carrier, with quality hundred Divide than meter, the carrier is the ZSM-5 for accounting for gross weight 80-85%;The active component include account for gross weight 5-10% CuO and Account for gross weight 5-10% FeO;The co-catalyst includes accounting for gross weight 1-3% NiO and accounts for gross weight 1-3% CoO.

It is preferred that, described CuO, FeO, NiO and CoO are decomposed by corresponding nitrate produce respectively.

It is preferred that, the reaction temperature of the CuFeNiCo/ZSM-5 desulphurization denitrations catalyst is 300-400 DEG C.

It is preferred that, the reaction temperature of the CuFeNiCo/ZSM-5 desulphurization denitrations catalyst is 400 DEG C.

The present invention also provides a kind of preparation method of CuFeNiCo/ZSM-5 desulphurization denitrations catalyst.The CuFeNiCo/ The preparation method of ZSM-5 desulphurization denitration catalyst, comprises the following steps:

Step S1:Cooled down after the ZSM-5 carriers are calcined 3-6 hours under the conditions of 500-600 DEG C standby;

Step S2:Calculated by the amount of the active component and the co-catalyst and weigh corresponding preposition raw material, by before Put raw material to dissolve in deionized water, add the ZSM-5 carriers that step S1 processing obtains and mixed;

Step S3:Step S2 mixture progress vacuum is rotated to moisture and is evaporated, the presoma of catalyst is obtained;

Step S4:The obtained presomas of step S3 are placed in drying box and the freeze-day with constant temperature under the conditions of 100-120 DEG C, and In drying process, with N2As protective gas, make to be in anaerobic state in the drying box;

Step S5:The obtained products of step S4 are placed in Muffle furnace, are calcined under the conditions of 580-650 DEG C, obtain described CuFeNiCo/ZSM-5 desulphurization denitration catalyst.

It is preferred that, also including step S6:Compressing tablet is carried out with 20-30MPa pressure, then sieved standby.

It is preferred that, the step S5 also includes being passed through N all the time2As protective gas, make to be in anaerobic in Muffle furnace all the time State, stops being passed through N after Muffle furnace is cooled to normal temperature2

It is preferred that, in the step S2, deionized water is 10 with the weight ratio of ZSM-5 carriers:1-20:1.

It is preferred that, the step S2 also includes mixture being stirred in 60-80 DEG C of water bath with thermostatic control.

Compared with correlation technique, the CuFeNiCo/ZSM-5 desulphurization denitration catalyst that the present invention is provided, with following beneficial Effect:

The CuFeNiCo/ZSM-5 desulphurization denitration catalyst that the present invention is provided, desulfurization off sulfide effect is good.It is applied to cigarette In gas purification technique, when catalyst reaction temperatures are 400 DEG C, SO2Removal efficiency be more than 90%, NOxRemoval efficiency be more than 98%.

【Embodiment】

Below will the invention will be further described by embodiment.

Embodiment one

A kind of preparation method of CuFeNiCo/ZSM-5 desulphurization denitrations catalyst, comprises the following steps:

Step S1:Cooled down after 80.5gZSM-5 carriers are calcined 3 hours under the conditions of 500 DEG C standby;

Step S2:Calculated by the amount of active component, co-catalyst and weigh its preposition raw material, by preposition raw material in deionization Dissolved in water, add the ZSM-5 carriers that step S1 processing obtains and mixed;

Specifically, the active component includes being 8gCuO and 8gFeO, co-catalyst includes 2gNiO and 1.5gCoO;Correspondence Ground, the preposition raw material by CuO of copper nitrate, weighs 18.8g copper nitrates;Preposition raw material by FeO of ferrous nitrate, weighs 20g Ferrous nitrate;With Ni (NO3)2·6H2O is NiO preposition raw material, weighs 7.8gNi (NO3)2·6H2O;With Co (NO3)2·6H2O For CoO preposition raw material, 2.6gCoO is weighed;And by the copper nitrate weighed, ferrous nitrate, Ni (NO3)2·6H2O、Co(NO3)2· 6H2O is dissolved in deionized water, and the 80.5gZSM-5 carriers added after step S1 processing;Then in 60-80 DEG C of thermostatted water Stirred 4 hours in bath, be sufficiently mixed it, and be sufficiently impregnated;Wherein deionized water and the weight ratio of ZSM-5 carriers are 20:1;

Step S3:Step S2 mixture progress vacuum is rotated to moisture and is evaporated, the presoma of catalyst is obtained;

Specifically, first step S2 mixture is exposed 48 hours in atmosphere, then at 80 DEG C in rotary evaporator Under the conditions of vacuum rotate to moisture and be evaporated, obtain the presoma of catalyst;

Step S4:The obtained presomas of step S3 are placed in drying box and freeze-day with constant temperature 2 hours under the conditions of 120 DEG C, And in drying process, with N2As protective gas, make to be in anaerobic state in the drying box;

Step S5:The obtained products of step S4 are placed in Muffle furnace, is calcined 4 hours under the conditions of 580 DEG C, makes nitrate Fully decompose, obtain the CuFeNiCo/ZSM-5 desulphurization denitrations catalyst;, it is necessary to which section is not passed through into Muffle furnace in the step N2As protective gas, make to be in anaerobic state in Muffle furnace all the time, stop being passed through N after Muffle furnace is cooled to normal temperature2

Step S6:Compressing tablet is carried out with 20-30MPa pressure, then sieved standby.

By the preparation method of the CuFeNiCo/ZSM-5 desulphurization denitrations catalyst, the CuFeNiCo/ prepared ZSM-5 desulphurization denitration catalyst, including active component, co-catalyst and carrier, by percentage to the quality, the carrier are total to account for The ZSM-5 of weight 80.5%;The active component includes accounting for the CuO of gross weight 8% and accounts for the FeO of gross weight 8%;Described help is urged Agent includes accounting for the NiO of gross weight 2% and accounts for the CoO of gross weight 1.5%.

The CuFeNiCo/ZSM-5 desulphurization denitrations catalyst is subjected to gas cleaning application test, it is specific as follows:

The application test is carried out in fixed bed reactors, the CuFeNiCo/ZSM-5 desulphurization denitration catalyst prepared It is fixed in the middle part of quartz tube reactor, utilizes the N in steel cylinder2、NO、SO2、O2、NH3The simulated flue gas necessarily matched is mixed into, By being reacted in quartz tube reactor, detect that sign is urged by the concentration to each dusty gas before and after reactor The desulphurization denitration performance of agent.

The reaction temperature of simulated flue gas in the catalyst is arranged on 300~400 DEG C, and this temperature is existing coal-burning boiler SCR In reaction temperature is interval.CuFeNiCo/ZSM-5 desulphurization denitrations catalyst prepared by above-described embodiment is in experiment is characterized, reaction Gas is constituted:750ppmNO, 900ppmNH3, 5%O2, 750ppmSO2, N2As Balance Air, gas flow is 1.5L/min.

The desulphurization denitration performance of the CuFeNiCo/ZSM-5 desulphurization denitrations catalyst is detected that testing result is such as Under:

(1) when catalyst reaction temperatures are 300 DEG C, SO2Removal efficiency be 80.5%, NOxRemoval efficiency be 85.2%.

(2) when catalyst reaction temperatures are 350 DEG C, SO2Removal efficiency be 88.2%, NOxRemoval efficiency be 95.3%.

(3) when catalyst reaction temperatures are 400 DEG C, SO2Removal efficiency be 90.7%, NOxRemoval efficiency be 98.6%.

Embodiment two

A kind of preparation method of CuFeNiCo/ZSM-5 desulphurization denitrations catalyst, comprises the following steps:

Step S1:Cooled down after 81gZSM-5 carriers are calcined 6 hours under the conditions of 500 DEG C standby;

Step S2:Calculated by the amount of active component, co-catalyst and weigh its preposition raw material, by preposition raw material in deionization Dissolved in water, add the ZSM-5 carriers that step S1 processing obtains and mixed;

Specifically, the active component includes being 5gCuO and 10gFeO, co-catalyst includes 1gNiO and 3gCoO;Correspondence Ground, the preposition raw material by CuO of copper nitrate, weighs 11.8g copper nitrates;Preposition raw material by FeO of ferrous nitrate, weighs 25g Ferrous nitrate;With Ni (NO3)2·6H2O is NiO preposition raw material, weighs 3.9gNi (NO3)2·6H2O;With Co (NO3)2·6H2O For CoO preposition raw material, 5.3gCoO is weighed;And by the copper nitrate weighed, ferrous nitrate, Ni (NO3)2·6H2O、Co(NO3)2· 6H2O is dissolved in deionized water, and the 81gZSM-5 carriers added after step S1 processing;Then in 60-80 DEG C of water bath with thermostatic control Middle stirring 4 hours, is sufficiently mixed it, and be sufficiently impregnated;Wherein deionized water and the weight ratio of ZSM-5 carriers are 15:1;

Step S3:Step S2 mixture progress vacuum is rotated to moisture and is evaporated, the presoma of catalyst is obtained;

Specifically, first step S2 mixture is exposed 48 hours in atmosphere, then at 80 DEG C in rotary evaporator Under the conditions of vacuum rotate to moisture and be evaporated, obtain the presoma of catalyst;

Step S4:The obtained presomas of step S3 are placed in drying box and freeze-day with constant temperature 2 hours under the conditions of 100 DEG C, And in drying process, with N2As protective gas, make to be in anaerobic state in the drying box;

Step S5:The obtained products of step S4 are placed in Muffle furnace, is calcined 4 hours under the conditions of 650 DEG C, makes nitrate Fully decompose, obtain the CuFeNiCo/ZSM-5 desulphurization denitrations catalyst;, it is necessary to which section is not passed through into Muffle furnace in the step N2As protective gas, make to be in anaerobic state in Muffle furnace all the time, stop being passed through N after Muffle furnace is cooled to normal temperature2

Step S6:Compressing tablet is carried out with 20-30MPa pressure, then sieved standby.

By the preparation method of the CuFeNiCo/ZSM-5 desulphurization denitrations catalyst, the CuFeNiCo/ prepared ZSM-5 desulphurization denitration catalyst, including active component, co-catalyst and carrier, by percentage to the quality, the carrier are total to account for The ZSM-5 of weight 81%;The active component includes accounting for the CuO of gross weight 5% and accounts for the FeO of gross weight 10%;Described help is urged Agent includes accounting for the NiO of gross weight 1% and accounts for the CoO of gross weight 3%.

The CuFeNiCo/ZSM-5 desulphurization denitrations catalyst is subjected to gas cleaning application test, it is specific as follows:

The application test is carried out in fixed bed reactors, the CuFeNiCo/ZSM-5 desulphurization denitration catalyst prepared It is fixed in the middle part of quartz tube reactor, utilizes the N in steel cylinder2、NO、SO2、O2、NH3The simulated flue gas necessarily matched is mixed into, By being reacted in quartz tube reactor, detect that sign is urged by the concentration to each dusty gas before and after reactor The desulphurization denitration performance of agent.

The reaction temperature of simulated flue gas in the catalyst is arranged on 300~400 DEG C, and this temperature is existing coal-burning boiler SCR In reaction temperature is interval.CuFeNiCo/ZSM-5 desulphurization denitrations catalyst prepared by above-described embodiment is in experiment is characterized, reaction Gas is constituted:750ppmNO, 900ppmNH3, 5%O2, 750ppmSO2, N2As Balance Air, gas flow is 1.5L/min.

The desulphurization denitration performance of the CuFeNiCo/ZSM-5 desulphurization denitrations catalyst is detected that testing result is such as Under:

(1) when catalyst reaction temperatures are 300 DEG C, SO2Removal efficiency be 80.2%, NOxRemoval efficiency be 84.8%.

(2) when catalyst reaction temperatures are 350 DEG C, SO2Removal efficiency be 87.8%, NOxRemoval efficiency be 94.9%.

(3) when catalyst reaction temperatures are 400 DEG C, SO2Removal efficiency be 90.3%, NOxRemoval efficiency be 98.4%.

Embodiment three

The CuFeNiCo/ZSM-5 desulphurization denitrations catalyst, including active component, co-catalyst and carrier, with quality hundred Divide than meter, the carrier is the ZSM-5 for accounting for gross weight 81%;The active component includes accounting for the CuO of gross weight 10% and accounts for total The FeO of weight 5%;The co-catalyst includes accounting for the NiO of gross weight 3% and accounts for the CoO of gross weight 1%.

In the present embodiment, the preparation method of the CuFeNiCo/ZSM-5 desulphurization denitrations catalyst is identical with implementing one, This is not repeated.

The CuFeNiCo/ZSM-5 desulphurization denitrations catalyst of the present embodiment is subjected to gas cleaning application test, experiment Method and condition are identical with embodiment one, and detect that testing result is as follows to the desulphurization denitration performance under equal conditions:

(1) when catalyst reaction temperatures are 300 DEG C, SO2Removal efficiency be 79.6%, NOxRemoval efficiency be 84.5%.

(2) when catalyst reaction temperatures are 350 DEG C, SO2Removal efficiency be 87.4%, NOxRemoval efficiency be 94.2%.

(3) when catalyst reaction temperatures are 400 DEG C, SO2Removal efficiency be 90.1%, NOxRemoval efficiency be 98.2%.

Example IV

The CuFeNiCo/ZSM-5 desulphurization denitrations catalyst, including active component, co-catalyst and carrier, with quality hundred Divide than meter, the carrier is the ZSM-5 for accounting for gross weight 85%;The active component includes accounting for the CuO of gross weight 6% and accounts for gross weight The FeO of amount 6%;The co-catalyst includes accounting for the NiO of gross weight 1.5% and accounts for the CoO of gross weight 1.5%.

In the present embodiment, the preparation method of the CuFeNiCo/ZSM-5 desulphurization denitrations catalyst is identical with implementing one, This is not repeated.

The CuFeNiCo/ZSM-5 desulphurization denitrations catalyst of the present embodiment is subjected to gas cleaning application test, experiment Method and condition are identical with embodiment one, and detect that testing result is as follows to the desulphurization denitration performance under equal conditions:

(1) when catalyst reaction temperatures are 300 DEG C, SO2Removal efficiency be 80.3%, NOxRemoval efficiency be 85%.

(2) when catalyst reaction temperatures are 350 DEG C, SO2Removal efficiency be 88%, NOxRemoval efficiency be 95.2%.

(3) when catalyst reaction temperatures are 400 DEG C, SO2Removal efficiency be 90.5%, NOxRemoval efficiency be 98.4%.

Embodiment five

The CuFeNiCo/ZSM-5 desulphurization denitrations catalyst, including active component, co-catalyst and carrier, with quality hundred Divide than meter, the carrier is the ZSM-5 for accounting for gross weight 83%;The active component includes accounting for the CuO of gross weight 7% and accounts for gross weight The FeO of amount 6%;The co-catalyst includes accounting for the NiO of gross weight 2% and accounts for the CoO of gross weight 2%.

In the present embodiment, the preparation method of the CuFeNiCo/ZSM-5 desulphurization denitrations catalyst is identical with implementing one, This is not repeated.

The CuFeNiCo/ZSM-5 desulphurization denitrations catalyst of the present embodiment is subjected to gas cleaning application test, experiment Method and condition are identical with embodiment one, and detect that testing result is as follows to the desulphurization denitration performance under equal conditions:

(1) when catalyst reaction temperatures are 300 DEG C, SO2Removal efficiency be 80.8%, NOxRemoval efficiency be 86.6%.

(2) when catalyst reaction temperatures are 350 DEG C, SO2Removal efficiency be 88.7%, NOxRemoval efficiency be 95.9%.

(3) when catalyst reaction temperatures are 400 DEG C, SO2Removal efficiency be 91.2%, NOxRemoval efficiency be 98.9%.

Compared with correlation technique, the CuFeNiCo/ZSM-5 desulphurization denitration catalyst that the present invention is provided, with following beneficial Effect:

The CuFeNiCo/ZSM-5 desulphurization denitration catalyst that the present invention is provided, desulfurization off sulfide effect is good.It is applied to cigarette In gas purification technique, when catalyst reaction temperatures are 400 DEG C, SO2Removal efficiency be more than 90%, NOxRemoval efficiency be more than 98%.

Above-described is only embodiments of the present invention, it should be noted here that for one of ordinary skill in the art For, without departing from the concept of the premise of the invention, improvement can also be made, but these belong to the protection model of the present invention Enclose.

Claims (9)

1. a kind of CuFeNiCo/ZSM-5 desulphurization denitrations catalyst, it is characterised in that including active component, co-catalyst and load Body, by percentage to the quality, the carrier are the ZSM-5 for accounting for gross weight 80-85%;The active component includes accounting for gross weight 5- The 10% CuO and FeO for accounting for gross weight 5-10%;The co-catalyst includes accounting for gross weight 1-3% NiO and accounts for gross weight 1- 3% CoO.
2. CuFeNiCo/ZSM-5 desulphurization denitrations catalyst according to claim 1, it is characterised in that the CuO, FeO, NiO and CoO are decomposed by corresponding nitrate produce respectively.
3. CuFeNiCo/ZSM-5 desulphurization denitrations catalyst according to claim 1 or 2, it is characterised in that described The reaction temperature of CuFeNiCo/ZSM-5 desulphurization denitration catalyst is 300-400 DEG C.
4. CuFeNiCo/ZSM-5 desulphurization denitrations catalyst according to claim 3, it is characterised in that described The reaction temperature of CuFeNiCo/ZSM-5 desulphurization denitration catalyst is 400 DEG C.
5. a kind of preparation method of CuFeNiCo/ZSM-5 desulphurization denitrations catalyst as claimed in claim 1, it is characterised in that bag Include following steps:
Step S1:Cooled down after the ZSM-5 carriers are calcined 3-6 hours under the conditions of 500-600 DEG C standby;
Step S2:Calculated by the amount of the active component and the co-catalyst and weigh corresponding preposition raw material, by preposition original Material dissolves in deionized water, adds the ZSM-5 carriers that step S1 processing obtains and is mixed;
Step S3:Step S2 mixture progress vacuum is rotated to moisture and is evaporated, the presoma of catalyst is obtained;
Step S4:The obtained presomas of step S3 are placed in drying box and the freeze-day with constant temperature under the conditions of 100-120 DEG C, and dried During, with N2As protective gas, make to be in anaerobic state in the drying box;
Step S5:The obtained products of step S4 are placed in Muffle furnace, are calcined under the conditions of 580-650 DEG C, obtain described CuFeNiCo/ZSM-5 desulphurization denitration catalyst.
6. preparation method according to claim 5, it is characterised in that also including step S6:Entered with 20-30MPa pressure Row compressing tablet, is then sieved standby.
7. preparation method according to claim 5, it is characterised in that the step S5 also includes being passed through N all the time2It is used as guarantor Gas is protected, makes to be in anaerobic state in Muffle furnace all the time, stops being passed through N after Muffle furnace is cooled to normal temperature2
8. preparation method according to claim 5, it is characterised in that in the step S2, deionized water and ZSM-5 carriers Weight ratio be 10:1-20:1.
9. preparation method according to claim 8, it is characterised in that the step S2 also includes mixture in 60-80 DEG C water bath with thermostatic control in be stirred.
CN201710121793.6A 2017-03-02 2017-03-02 Desulphurization denitration catalyst of CuFeNiCo/ZSM 5 and preparation method thereof CN106955733A (en)

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Application publication date: 20170718