CN100500282C - Use of nano zinc oxide tube - Google Patents
Use of nano zinc oxide tube Download PDFInfo
- Publication number
- CN100500282C CN100500282C CNB2003101125913A CN200310112591A CN100500282C CN 100500282 C CN100500282 C CN 100500282C CN B2003101125913 A CNB2003101125913 A CN B2003101125913A CN 200310112591 A CN200310112591 A CN 200310112591A CN 100500282 C CN100500282 C CN 100500282C
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- catalyst
- nano oxidized
- oxidized zinc
- zinc oxide
- pipe
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
A catalyst for purifying the petroleum features that it contains nanotubes of zinc oxide. An absorption tower using said catalyst is also disclosed. Its advantage is high desulfurizing effect.
Description
[technical field]
The present invention relates to a kind of application of nano oxidized zinc pipe, relate in particular to a kind of nano oxidized zinc pipe as oil purifying Application of Catalyst.
[background technology]
The corrosivity harmful substance mainly is the sulfur dioxide sulfides in the liquefied petroleum, because the preparation technology of oil plant has nothing in common with each other, what cause sulfide in the liquefied petroleum exists form also comparatively complicated, and compare with fuel such as natural gases, its sulfide content is higher, therefore adopts conventional processing method to be difficult to the sulfide Ex-all.When above-mentioned oil is used as the fuel of equipment such as automobile, described sulfide is after the burning of the engine place of equipment such as automobile, a part forms oxysulfide and enters contaminated air in the atmosphere, a part then generates residue such as sulphur and stagnates and be stored in the evaporimeter, diaphragm and supply air line to evaporimeter cause corrosion, and a large amount of sulphur can produce serious corrosion and destruction to the air supply system and the combustion system of engine of vehicle, and directly threatens traffic safety.
The zinc oxide that adopt in the prior art more, materials such as titanium oxide as catalyst with the sulfur dioxide sulfides of absorption in the liquefied petroleum, for improving the desulfurization effect of catalyst, then must be with zinc oxide, catalyst material nanometers such as titanium oxide, see also document ＂ how the rice Preparation of catalysts with use ＂, how rice technology monograph, P.134～139 (2001), disclose sulfur dioxide sulfides in the adsorbable liquefied petroleum of Zinc oxide particles in the document, if it is with the Nano-class zinc oxide be catalyst when adsorbing, then strong than conventional oxidation zinc particle adsorption efficiency height and heat endurance.But after with above-mentioned Zinc oxide catalytic material nanoization, it is piled up bad and produces the channel phenomenon at absorption tower Nei Yiyin, real contact area is reduced, so often catalyst material is adsorbed on other porous carrier, this carrier can be alundum (Al, silica, zeolite etc.Contain the adsorbent of zinc oxide as disclosing a kind of gas desulfurization in No. the 95103489.8th, the Chinese patent application with durability, this adsorbent is to be catalyst with zinc oxide, and titanium dioxide is diluent, and high surface area silica gel is made carrier and adhesive.
As above-mentioned catalyst is adsorbed on the porous carrier, its effective catalysis area is subject to the accumulation situation of this catalyst in the porous carrier surface, can't guarantee effective catalysis area, and cause processing procedure complexity, cost to improve because of increasing extra carrier, after Zinc oxide catalytic poisons, its purifying cost also can be because of itself and the relative raising of separable programming between porous carrier.
In view of this, provide a kind of low cost, catalyst that effectively the catalysis area is high and use that the absorption tower of this catalyst is real to be necessity.
[summary of the invention]
Hang down and expensive problem with the effective catalysis area of catalyst for solving oil purifying of the prior art, the object of the present invention is to provide a kind of low cost, effective high catalyst of catalysis area.
For realizing purpose of the present invention, the invention provides a kind of application of nano oxidized zinc pipe, it is characterized in that the effective oil purifying catalyst of doing of a plurality of nano zine oxides.
Compared with prior art, the present invention selects for use nano oxidized zinc pipe as oil purifying catalyst, because the hollow structure of this nano oxidized zinc pipe self, just can prevent because of piling up the bad channel phenomenon that produces, and can improve effective catalysis area of this catalyst, thereby strengthen catalytic desulfurization greatly liquefied petroleum; Omit indispensable catalyst carrier in the prior art, processing procedure is simple, reduces cost; In addition, even Zinc oxide catalytic is poisoned, need not carry out the separating step between catalyst and carrier in the prior art, the also corresponding reduction of its purifying cost.
[description of drawings]
Fig. 1 is the schematic diagram on the absorption tower of the embodiment of the invention.
Fig. 2 is the schematic diagram that the nano oxidized zinc pipe of the embodiment of the invention is arranged with dispersing morphology on dividing plate.
Fig. 3 is the nano oxidized zinc pipe of the embodiment of the invention schematic diagram with array format on dividing plate.
[specific embodiment]
See also Fig. 1, employed oil purifying comprises with absorption tower 1 in the preferred embodiment of the present invention: tower body 8, inlet 2 and liquid outlet 3 lay respectively at above and below one side of the non-desulfurization zone of tower body 8, and are oppositely arranged; Air inlet 4 and gas outlet 5 lay respectively at the bottom and the top of tower body 8; A plurality of desulfurization units 9 are arranged at intervals at the desulfurization zone 16 in the tower body 8, and each desulfurization unit 9 contacts with tower body 8 inner wall sealings respectively.
See also Fig. 2 and Fig. 3, desulfurization unit 9 comprises catalyst layer 6 and dividing plate 7, catalyst layer 6 comprises a plurality of nano oxidized zinc pipes 10, this nano oxidized zinc pipe 10 is that cross section is the zinc oxide tube of hexagonal crystal system, its pipe thickness and interior caliber are nanoscale, dividing plate 7 has a plurality of micropores, and the internal diameter of these a plurality of micropores prevents that all less than the external diameter of nano oxidized zinc pipe 10 the nano oxidized zinc pipe 10 on it from spilling dividing plate 7.The preparation method of desulfurization unit 9 is: the nano oxidized zinc pipe 10 that magnetron sputtering method or chemical vapour deposition technique are made directly is deposited in and forms (with reference to Fig. 2) on the dividing plate 7, because the cannulated structure of nano oxidized zinc pipe 10 self can be guaranteed the runner when catalyst layer 6 carries out the liquefied petroleum desulfurization; Or mat magnetron sputtering method or chemical vapour deposition technique directly are deposited on nano oxidized zinc pipe 10 arrays and form (with reference to Fig. 3) on the dividing plate 7, because the runner the when hollow structure of regularly arranged nano oxidized zinc pipe 10 self also can be guaranteed the liquefied petroleum desulfurization is avoided the generation of abnormal stacking phenomenon.
When above-mentioned desulfurization unit 9 is arranged at the desulfurization zone 16 on absorption tower 1, the liquefied petroleum of required desulfurization just can flow along the tube wall medial and lateral of nano oxidized zinc pipe 10, and desulfurization by catalytic action of zinc oxide, prevent the channel phenomenon that produces because of catalyst buildup is bad in the prior art, and guarantee to improve the practical sulphur removal effect on absorption tower 1 by the actual contact response area.
When desulfurization work is carried out on absorption tower 1, feed liquefied petroleum by inlet 2, liquefied petroleum is owing to the effect of self gravitation flows downward; At desulfurization zone 16, the sulfur dioxide (SO in the liquefied petroleum
2) zinc oxide (ZnO) reaction in sulfides and the catalyst layer 6 and desulfurization, catalyst cures; Liquefied petroleum after the desulfurization flow to liquid outlet 3 places and flows out absorption tower 1.As follows at the desulphurization reaction that desulfurization zone 16 carries out:
ZnO+SO
2＝ZnSO
3
ZnO+SO
3＝ZnSO
4
In desulfurization, can carry out regenerative operation to catalyst layer 6, promptly feed hydrogen to air inlet 4, this hydrogen is because its density is mobile to 1 top, absorption tower less than air, at desulfurization zone 16 places the catalyst of sulfuration (figure does not show) is reduced into zinc oxide, the hydrogen sulfide (H that reaction generates
2S) also because its density flows 1 top, absorption tower with hydrogen stream one in the same way less than air, flow out absorption tower 1 by gas outlet 5 again.The regenerative response that catalyst layer 6 takes place is as follows:
ZnSO
4+H
2＝ZnSO
3+H
2O
ZnSO
3+3H
2＝ZnO+H
2S↑+2H
2O
ZnSO
4+4H
2＝ZnO+H
2S↑+3H
2O
The desulfurization work on above-mentioned absorption tower 1 and the regenerative operation of catalyst also can feed hydrogen to air inlet 4 again, or after air inlet 4 feeds hydrogen, feed liquefied petroleum to inlet 2 again except that carrying out simultaneously after inlet 2 feeds liquefied petroleum.Thereby finish the regenerative sulfur binding work on absorption tower 1.
Claims (4)
1. the application of a nano oxidized zinc pipe is characterized in that the effective oil purifying catalyst of doing of a plurality of nano zine oxides.
2. the application of nano oxidized zinc pipe as claimed in claim 1 is characterized in that: the pipe thickness of described nano oxidized zinc pipe and interior caliber are nanoscale.
3. the application of nano oxidized zinc pipe as claimed in claim 1 is characterized in that: described a plurality of nano oxidized zinc pipe dispersed arrangement.
4. the application of nano oxidized zinc pipe as claimed in claim 1 is characterized in that: described a plurality of nano oxidized zinc pipes are regularly arranged array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101125913A CN100500282C (en) | 2003-12-11 | 2003-12-11 | Use of nano zinc oxide tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101125913A CN100500282C (en) | 2003-12-11 | 2003-12-11 | Use of nano zinc oxide tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1626624A CN1626624A (en) | 2005-06-15 |
| CN100500282C true CN100500282C (en) | 2009-06-17 |
Family
ID=34759835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101125913A Expired - Fee Related CN100500282C (en) | 2003-12-11 | 2003-12-11 | Use of nano zinc oxide tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100500282C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111558400A (en) * | 2020-05-07 | 2020-08-21 | 朱岳军 | Catalyst porous ceramic carrier with high surface area |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1111602A (en) * | 1994-03-23 | 1995-11-15 | 美国政府能源部 | Durable zinc oxide-containing sorbents for coal gas desulfurization |
| CN1129146A (en) * | 1995-02-17 | 1996-08-21 | 段忠善 | Catalyst for purifying waste industrial gas and exhausted gas of automobile |
-
2003
- 2003-12-11 CN CNB2003101125913A patent/CN100500282C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1111602A (en) * | 1994-03-23 | 1995-11-15 | 美国政府能源部 | Durable zinc oxide-containing sorbents for coal gas desulfurization |
| CN1129146A (en) * | 1995-02-17 | 1996-08-21 | 段忠善 | Catalyst for purifying waste industrial gas and exhausted gas of automobile |
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| Publication number | Publication date |
|---|---|
| CN1626624A (en) | 2005-06-15 |
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Granted publication date: 20090617 Termination date: 20141211 |
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