CN107519945A - A kind of handling process of wide temperature range denitrating catalyst raw material - Google Patents
A kind of handling process of wide temperature range denitrating catalyst raw material Download PDFInfo
- Publication number
- CN107519945A CN107519945A CN201710427779.9A CN201710427779A CN107519945A CN 107519945 A CN107519945 A CN 107519945A CN 201710427779 A CN201710427779 A CN 201710427779A CN 107519945 A CN107519945 A CN 107519945A
- Authority
- CN
- China
- Prior art keywords
- reactor
- handling process
- raw material
- denitrating catalyst
- temperature range
- 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.)
- Pending
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- 239000003054 catalyst Substances 0.000 title claims abstract description 34
- 239000002994 raw material Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000008569 process Effects 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 45
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 230000018044 dehydration Effects 0.000 claims abstract description 5
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 12
- 239000002245 particle Substances 0.000 abstract description 5
- 230000003197 catalytic effect Effects 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 9
- 239000003245 coal Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000012190 activator Substances 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000002389 environmental scanning electron microscopy Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011020 pilot scale process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 description 1
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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/04—Mixing
-
- 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
-
- B01J35/51—
-
- 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
-
- 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
Abstract
The invention discloses the present invention relates to new material handling process, specifically related to a kind of handling process of wide temperature range denitrating catalyst raw material, the handling process includes agitator, reactor and filter press, denitrating catalyst raw material is after being uniformly mixed of agitator, into in reactor, reactor is incubated after the temperature that heating reaches certain is carried out to material, material enters filter press after fully being reacted in reactor, filter press carries out forced dehydration drying to material, is packed after the moisture of material reaches requirement.Near-spherical, overall good dispersion is presented in the obtained catalyst individual particle that the present invention is handled, and the catalytic effect of catalyst is obvious, and the content of nitrogen oxides in effluent substantially reduces.
Description
Technical field
The present invention relates to new material handling process, and in particular to a kind of wide temperature range denitrating catalyst raw material
Handling process.
Background technology
Nitrogen oxides can cause acid rain, photochemical fog etc. to influence the pollutant of environment, and it is also current atmospheric environment
The emphasis and difficult point of protection.According to incompletely statistics, the NOx for having more than 90% in the atmosphere pollution in China comes from coal, stone
The combustion process of oil, natural gas etc., wherein most derives from burning of coal, and thermoelectricity and various kilns account for the whole nation absolutely with coal
Several coal consumption greatly, therefore NOx pollutant sources mostly come from thermal power plant and various Industrial Stoves.Environmental protection in 2011
National quality supervisory detection quarantine general bureau of portion issues《Fossil-fuel power plant atmospheric pollutant emission standard》Secondary exposure draft, and
And thermal power plant's discharged nitrous oxides are required to have increased significantly with formal implementation from 2012.1.1 days, standard, therefore control
The emission request of thermal power plant's nitrogen oxides processed is more and more urgent.It has developed many gas denitrifying technologies, wherein ammonia
Gas SCR (NH3-SCR) technology is technology the most ripe so far, and this technology denitration efficiency is high, does not almost have
There is secondary pollution, be close to 100% denitration rate in theory, general vanadium titanium SCR catalyst and its denitration device be very in the world
The suitable power plant of China of hardly possible and the flue gas condition of industrial coal equipment.Implementing denitrating flue gas requirement in China can be in 250 DEG C or so height
Imitate the low-temperature denitration catalyst of work.So the SCR technology that exploitation wide temperature range denitrating catalyst adapts to China seems particularly
It is important.
And the handling process for the activator raw material applied to wide temperature range denitration directly influences wide temperature range and taken off
The service efficiency of denox catalyst, it is therefore desirable to have a kind of place for the activator raw material efficiently applied to wide temperature range denitration
Science and engineering skill.
The content of the invention
The invention aims to solve the problems, such as in background technology, there is provided a kind of wide temperature range denitrating catalyst is former
The handling process of material.
To achieve these goals, technical scheme is as follows：A kind of wide temperature range denitrating catalyst raw material
Handling process, the handling process includes agitator, reactor and filter press, and denitrating catalyst raw material passes through the stirring of agitator
After well mixed, into reactor, reactor is incubated after the temperature that heating reaches certain is carried out to material, and material is anti-
Answer and filter press is entered after fully being reacted in kettle, filter press carries out forced dehydration drying to material, when the moisture of material reaches
Packed to after requiring.
Preferably, described reactor is divided into inside and outside two layers, and outer layer is that conduction material internal layer is material, to outer layer heat conduction thing
Matter is heated, and by the transmission of heat, realizes the heating to internal layer material.
Preferably, the heat temperature raising to reactor outer layer conduction material, slowly at the uniform velocity raising for keeping temperature is answered,
And when temperature is increased to 90 DEG C -100 DEG C heating stopped to reactor outer layer conduction material.
Preferably, described reactor is incubated to material, and the temperature of through reactor outer wall is down to 55 DEG C -70 DEG C.
Preferably, described agitator, reactor are mutually interconnected with filter press by slurry feeding pump and slurries conveyance conduit
Connect.
The present invention has advantages below compared with prior art：Catalyst individual particle produced by the present invention present near-spherical,
Overall good dispersion, the catalytic effect of catalyst is obvious, and the content of nitrogen oxides in effluent substantially reduces.
Brief description of the drawings
Fig. 1 is a kind of processing technological flow figure of wide temperature range denitrating catalyst raw material of the present invention；
Fig. 2 is obtains the ESEM of catalyst after a kind of processing of wide temperature range denitrating catalyst raw material of the present invention
Analysis；
Fig. 3 is obtains the projection Electronic Speculum of catalyst after a kind of processing of wide temperature range denitrating catalyst raw material of the present invention
Analysis.
Embodiment
Below in conjunction with drawings and examples, the technical scheme in the present invention is clearly and completely described.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
Embodiment 1
As shown in figure 1, denitrating catalyst raw material includes solid powder and liquid slurry, the stirring of agitator is first passed around,
It is sufficiently mixed, its active material is evenly distributed, suitably stir certain time, untill compound is into thick slurry.
Whipping process pays attention to material temperature rise, and material temperature rise is after the stir speed (S.S.) for soon reducing agitator；By the raw material of stirring, in the pump housing
In the presence of, the thick slurry in agitator is sent into the reactor with insulation effect, reactor point is inside and outside two layers, sticky
For the material of shape in internal layer, outer layer is conduction material, and such as conduction oil is heated, by the heat transfer process of conduction oil, to dividing
Cloth carries out heating and thermal insulation in the thick material of internal layer, until temperature is increased to 95 DEG C, held for some time.On temperature rise is uniform
Rise, making sure to keep in mind temperature can not be too high, and temperature rise should not be too fast, controls the temperature of conduction oil.Insulation is dropped until reactor outside wall temperature
Untill 70 DEG C or so；Raw material material after reactor is incubated, water content are of a relatively high.In the effect of the pump housing and pipeline
Under, the material in reactor is pumped to force drying dehydration equipment, carry out it is compulsory dehydrates, moisture content is set along being distributed in
The pipeline nature following current on standby both sides recycles.After material moisture content content reaches sets requirement, discharging is automatically begun to, packs, treats
With.
Embodiment 2
As shown in figure 1, denitrating catalyst raw material includes solid powder and liquid slurry, the stirring of agitator is first passed around,
It is sufficiently mixed, its active material is evenly distributed, suitably stir certain time, untill compound is into thick slurry.
Whipping process pays attention to material temperature rise, and material temperature rise is after the stir speed (S.S.) for soon reducing agitator；By the raw material of stirring, in the pump housing
In the presence of, the thick slurry in agitator is sent into the reactor with insulation effect, reactor point is inside and outside two layers, sticky
For the material of shape in internal layer, outer layer is conduction material, and as conduction oil heats to conduction oil, the heat transfer for passing through conduction oil is made
With, heating and thermal insulation is carried out to the thick material for being distributed in internal layer, until temperature is increased to 100 DEG C, held for some time.Temperature
Rise and uniformly rise, making sure to keep in mind temperature can not be too high, and temperature rise should not be too fast, controls the temperature of conduction oil.Insulation is until outside reactor
Untill wall temperature is down to 75 DEG C or so；Raw material material after reactor is incubated, water content are of a relatively high.In the pump housing and pipeline
In the presence of, the material in reactor is pumped to force drying dehydration equipment, carry out it is compulsory dehydrates, moisture content along point
Pipeline nature following current of the cloth on equipment both sides recycles.After material moisture content content reaches sets requirement, discharging is automatically begun to, is filled
Bag, it is stand-by.
It is obtained to urge by the handling process of the wide temperature range denitrating catalyst raw material in embodiment 1, embodiment 2
Agent, in order to which the microscopic appearance to catalyst and thing phase composition have part understanding, we have carried out ESEM, projection electricity to it
Mirror respectively obtains Fig. 2, Fig. 3.It can be seen that sheet knot is presented in the catalyst W/Ti powder prepared from Fig. 2 scanning electron microscope (SEM) photographs
Structure, primary particle size is at 0.1 μm or so.As can be seen that near-spherical, overall dispersiveness is presented in individual particle from Fig. 3 TEM collection of illustrative plates
Good, for particle diameter substep at 0.1 μm or so, particle diameter is concentrated mainly on this region, consistent with SEM spectrum analysis.
And obtain table one and utilize catalyst made from preparation technology of the present invention for certain coal chemical industry Co., Ltd of electrit group, it is burnt
Stove fume desulfuring and denitrifying integration pilot scale parameter, the as can be seen from the table high catalytic efficiency of catalyst, the nitrogen oxidation measured
The content of thing substantially reduces.
Table one
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
For personnel it should be appreciated that the present invention is not limited to the above embodiments, that described in above-described embodiment and specification is the present invention
Principle, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these change and
Improvement is both fallen within the range of claimed invention.The protection domain of application claims by appended claims and its
Equivalent defines.
Claims (5)
- A kind of 1. handling process of wide temperature range denitrating catalyst raw material, it is characterised in that：The handling process includes stirring Device, reactor and filter press, denitrating catalyst raw material is after being uniformly mixed of agitator, into reactor, reaction Kettle is incubated after the temperature that heating reaches certain is carried out to material, and material enters press filtration after fully being reacted in reactor Machine, filter press carry out forced dehydration drying to material, packed after the moisture of material reaches requirement.
- A kind of 2. handling process of wide temperature range denitrating catalyst raw material according to claim 1, it is characterised in that： Described reactor is divided into inside and outside two layers, and outer layer is that conduction material internal layer is material, and outer layer conduction material is heated, passed through The transmission of heat, realize the heating to internal layer material.
- A kind of 3. handling process of wide temperature range denitrating catalyst raw material according to claim 2, it is characterised in that： The described heat temperature raising to reactor outer layer conduction material, slowly at the uniform velocity raising for keeping temperature is answered, and when temperature is increased to 90 DEG C -100 DEG C heating stopped to reactor outer layer conduction material.
- A kind of 4. handling process of wide temperature range denitrating catalyst raw material according to claim 1, it is characterised in that： Described reactor is incubated to material, when the temperature of through reactor outer wall is down to 65 DEG C -75 DEG C, stops insulation, material Enter filter press.
- A kind of 5. handling process of wide temperature range denitrating catalyst raw material according to claim 1, it is characterised in that： Described agitator, reactor and filter press is connected with each other by slurry feeding pump and slurries conveyance conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710427779.9A CN107519945A (en) | 2017-06-08 | 2017-06-08 | A kind of handling process of wide temperature range denitrating catalyst raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710427779.9A CN107519945A (en) | 2017-06-08 | 2017-06-08 | A kind of handling process of wide temperature range denitrating catalyst raw material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107519945A true CN107519945A (en) | 2017-12-29 |
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| CN201710427779.9A Pending CN107519945A (en) | 2017-06-08 | 2017-06-08 | A kind of handling process of wide temperature range denitrating catalyst raw material |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764662A (en) * | 2012-07-13 | 2012-11-07 | 重庆普源化工工业有限公司 | Preparation method of special titanium-tungsten powder for SCR (selective catalytic reduction) denitrification catalyst |
| CN102962074A (en) * | 2012-11-19 | 2013-03-13 | 北京化工大学 | Denitration catalyst of wide activity temperature window as well as preparation method and application thereof |
| CN103586017A (en) * | 2013-11-22 | 2014-02-19 | 西南化工研究设计院有限公司 | Preparation method of titanium and tungsten powder for flue gas denitration catalyst and product prepared through preparation method |
| CN204265820U (en) * | 2014-11-24 | 2015-04-15 | 清华大学 | A kind of retrieving arrangement of useless vanadium tungsten titanium catalyst |
| CN106521160A (en) * | 2016-10-24 | 2017-03-22 | 中电恒德（北京）环保投资有限公司 | Method for extraction of vanadium from waste SCR catalyst and preparation of activated titanium silicon tungsten powder |
| CN106732653A (en) * | 2016-12-30 | 2017-05-31 | 雷笑天 | A kind of preparation method of low-temperature denitration catalyst |
-
2017
- 2017-06-08 CN CN201710427779.9A patent/CN107519945A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764662A (en) * | 2012-07-13 | 2012-11-07 | 重庆普源化工工业有限公司 | Preparation method of special titanium-tungsten powder for SCR (selective catalytic reduction) denitrification catalyst |
| CN102962074A (en) * | 2012-11-19 | 2013-03-13 | 北京化工大学 | Denitration catalyst of wide activity temperature window as well as preparation method and application thereof |
| CN103586017A (en) * | 2013-11-22 | 2014-02-19 | 西南化工研究设计院有限公司 | Preparation method of titanium and tungsten powder for flue gas denitration catalyst and product prepared through preparation method |
| CN204265820U (en) * | 2014-11-24 | 2015-04-15 | 清华大学 | A kind of retrieving arrangement of useless vanadium tungsten titanium catalyst |
| CN106521160A (en) * | 2016-10-24 | 2017-03-22 | 中电恒德（北京）环保投资有限公司 | Method for extraction of vanadium from waste SCR catalyst and preparation of activated titanium silicon tungsten powder |
| CN106732653A (en) * | 2016-12-30 | 2017-05-31 | 雷笑天 | A kind of preparation method of low-temperature denitration catalyst |
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Application publication date: 20171229 |
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