CN1428191A - Catalyst activity protecting agent - Google Patents
Catalyst activity protecting agent Download PDFInfo
- Publication number
- CN1428191A CN1428191A CN01131647.0A CN01131647A CN1428191A CN 1428191 A CN1428191 A CN 1428191A CN 01131647 A CN01131647 A CN 01131647A CN 1428191 A CN1428191 A CN 1428191A
- Authority
- CN
- China
- Prior art keywords
- protecting agent
- catalyst
- activity
- catalyst activity
- activity protecting
- 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 44
- 239000003223 protective agent Substances 0.000 title claims abstract description 31
- 230000000694 effects Effects 0.000 title claims abstract description 25
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 25
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 18
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 9
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims description 6
- 229910001950 potassium oxide Inorganic materials 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims 1
- 230000003197 catalytic effect Effects 0.000 abstract description 11
- 239000000919 ceramic Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 238000006555 catalytic reaction Methods 0.000 abstract description 7
- 229910052759 nickel Inorganic materials 0.000 abstract description 7
- 239000000376 reactant Substances 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 3
- 239000000571 coke Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 238000004939 coking Methods 0.000 description 5
- 239000011733 molybdenum Substances 0.000 description 5
- 229910052750 molybdenum Inorganic materials 0.000 description 5
- 231100000572 poisoning Toxicity 0.000 description 5
- 230000000607 poisoning effect Effects 0.000 description 5
- 229910052573 porcelain Inorganic materials 0.000 description 5
- 238000001354 calcination Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 239000000969 carrier Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000005078 molybdenum compound Substances 0.000 description 1
- 150000002752 molybdenum compounds Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The catalyst activity protecting agent is characterized by that a certain quantity of nickel and molybdenum metal compound with high selectivity and good stability is more loaded on the ceramic carrier made up by using inert alumina and silicon dioxide, etc., and said activity-protecting agent is formed by adopting die dry-pressing process, and its apperance form is made into double-cone form, and on the curved surface of two cones are respectively distributed several L-shaped grooves, so that it not only has the functions of stable industrial inert carrier property, high mechanical strength and reducing catalytic bed layer resistance for supporting and protecting main catalyst, but also can make the reactant with high activity react on the protecting agent and can make the main catalyst do not easily coke and be poisoned, so that it can greatly prolong service life of the main catalyst and can raise its catalytic reaction efficiency.
Description
The present invention relates to the catalyst active carrier that a kind of chemical industry is used, especially a kind of existing support protective effect participates in the catalyst activity protecting agent of catalytic reaction again.
At present; petrochemical industry; Coal Chemical Industry; device such as the various reactors of fine chemistry industry and fractionation uses the porcelain carrier of plurality of specifications; these carriers are that basis is formed by inertia aluminium oxide and silica mostly; pulverize by adopting; batching; mold pressing; the ceramic production technology method such as burning till makes; these porcelain carriers less or substantially not with catalyst generation side reaction; and have high temperature resistant; measuring body characteristic; satisfied the abominable basic demand of industrial inertia carrier environment for use; this shows; these inertia porcelain carriers only play the support protective effect to catalyst; when highly active reactant process catalytic bed, only react with catalyst; therefore might cause and react concentrated and make catalyst be easy to coking and poisoning; thereby reduced the catalytic efficiency of reactor; lowered the service life of catalyst; the pressure that has improved the reactor catalysis bed falls, and has correspondingly increased the production cost of enterprise.
The objective of the invention is to develop a kind of catalyst activity protecting agent; make it not only to have the support defencive function of catalyst inert carrier; and have identical with the major catalyst effect but more weak catalytic activity is arranged, thereby the protection major catalyst is difficult for coking and poisoning, improves catalytic reaction efficient.
Technology contents of the present invention mainly is prescription and the appearance structure problem that solves activity protecting agent.Make full use of the good catalytic performance of materials such as nickel, molybdenum and the inertia support performance of ceramic material.At first select for use materials such as inertia aluminium oxide, silica and potassium oxide to make this activity protecting agent external form ceramic carrier; next is will possess the nickel powder of catalytic activity and molybdenum powder to carry and be attached on the ceramic carrier in making the process of ceramic carrier; activity protecting agent is in the inertia support protective effect of playing catalyst like this; highly active reactant is reacted on this protective agent; make major catalyst be difficult for coking; be difficult for poisoning, thereby protected major catalyst effectively and improved catalytic reaction efficient.
The object of the present invention is achieved like this: nickel powder and molybdenum powder are joined in the porcelain making materials such as aluminium oxide and silica; make particular geometric shapes by adopting special dies and technology; then through calcining; make nickel; catalysis materials such as molybdenum and protective agent ceramic carrier are closely linked; this protectant specific surface and porosity had so both been improved; do not reduce protectant mechanical strength again; can improve simultaneously the flow regime of fluid on this protective agent again; help reducing the resistance drop of catalytic bed; improve gas; the distribution of liquid, and the ability of certain holding solid particle is arranged.
The catalyst activity protecting agent chemical weight percentage composition of filling a prescription is:
Inertia aluminium oxide: 30～60%; Silica 25～60%.
Nickel powder and molybdenum powder mixture: 1～20%; Potassium oxide: 1～5%.
Preparation process of the present invention is as follows:
1. the inertia aluminium oxide, silica and the potassium oxide that take by weighing above-mentioned prescription by weight percentage carry out fragmentation, screening, powder process;
2. take by weighing by weight percentage to add and have chemically active nickel powder and molybdenum powder mixture;
3. add an amount of forming adhesive and old after the batch mixes again;
4. select for use mould to carry out compression molding with special geometry;
5. the activity protecting agent base substrate of forming is sent in the calcining kiln and calcined;
6. cool off back deashing, check, packing, warehouse-in.
Wherein key is to select firing atmosphere and firing temperature, and molybdenum, nickel crystallite can not excessively be grown up, and makes the ceramic carrier can not tight burning again, and the surface is micropore.
Ceramic carrier adopts bipyramid bodily form structural design; promptly on the two ends conical surface of a bipyramid bodily form porcelain body, evenly open several L type grooves; like this; the specific surface and the porosity of protective agent body had both been improved; can when the loading catalyst bed, be difficult to produce the through hole that runs through bed again, thereby both avoid major catalyst to be scattered, reduce the resistance drop of beds again; improve the distribution of gas, liquid, improve catalytic efficiency.
Be applicable to that various need such as petrochemical industry, metal smelt, fine chemistry industry, nuclear industry avoid the occasion of vigorous reaction.
Compared with the prior art, the present invention has following characteristics:
1. because this protectant main part is the inertia ceramic carrier, have high temperature resistant, measuring body characteristic, can under adverse circumstances, use.
2. because this protective agent is uploaded the active metallic compound with a certain amount of selectivity height, good stability; it has the activity identical but more weak with major catalyst; the reactant of high activity is reacted on this protective agent; thereby make major catalyst be difficult for coking and poisoning, protected major catalyst effectively.Improve catalytic efficiency, prolonged the service life of major catalyst.
3. owing to adopt the biconial structure, and at the opening L-shaped groove of awl cambered surface, protectant specific surface is higher, and catalytic bed is difficult to form through hole, and is better to the protection effect of major catalyst, simultaneously, more helps carrying out the material migration thereon.
Fig. 1 is a catalyst activity protecting agent profile front view of the present invention;
Fig. 2 is a catalyst activity protecting agent profile vertical view of the present invention;
Fig. 3 is a catalyst activity protecting agent profile I-I cutaway view of the present invention.
Below in conjunction with drawings and Examples the present invention is described in further detail.
As shown in the figure, on the cambered surface of two circular cones of bicone 1, open 4 L type grooves 2 equably, because L type groove 2 do not run through bicone 1, therefore it is put arbitrarily also and can not form the through hole that runs through catalytic bed, make major catalyst implantation and not being scattered thereon very safely.
Embodiment: the percentage composition of catalyst activity protecting agent prescription chemistry weight is: inertia aluminium oxide 48%; Silica 42%; Nickel, molybdenum micro mist mixture 8%; Potassium oxide 2%.
Preparation process is as follows:
1. take by weighing inertia aluminium oxide, silica, potassium oxide fragmentation, screening, powder process by above-mentioned prescription;
2. take by weighing nickel, the molybdenum micro mist mixture of above-mentioned prescription again, join in the above-mentioned powder that processes and mix, and add the suitable amount of adhesive placement more than 24 hours;
3. select the biconial mould of opening L-shaped groove to carry out dry-pressing formed;
4. the activity protecting agent base substrate after the moulding is packed into and put into the calcining kiln calcining in the saggar;
The cooling after with product deashing, check, packing, warehouse-in.
Technology controlling and process: adopt neutrality or reducing atmosphere to burn till, burn till and end fiery temperature: 1300 ℃.
Operation principle is as follows: the first carrier layer that is made of the bipyramid bodily form protective agent of different size of filling one deck in reaction unit; add the major catalyst layer then thereon; on the major catalyst layer, cover the carrier layer of forming by the bipyramid bodily form protective agent of different size again; because the groove 2 on the bicone is the L type; therefore can not produce the through hole that runs through bed and major catalyst is scattered; adopt this structure; when inertia is propped up the overfill protection major catalyst; carrier specific surface and porosity have been increased; reduced and passed through gas; the pressure loss of liquid stream and improved the material transport efficiency promotes catalytic reaction.Simultaneously owing to have a certain amount of selectivity height, the active nickel of good stability, molybdenum compound on the protective agent; it has the activity identical but more weak with major catalyst; can make highly active being reflected at that more weak reaction relatively takes place on this protective agent; thereby make major catalyst be difficult for coking and poisoning, prolonged the service life of major catalyst.
Claims (2)
1. catalyst activity protecting agent, it is characterized in that: catalyst activity protecting agent composition and weight proportion are:
Raw material: proportioning (Wt%)
Inertia aluminium oxide: 30-60%
Silica: 25-60%
Potassium oxide: 1-5%
Nickel powder and molybdenum powder mixture: 1-20%
2. catalyst activity protecting agent according to claim 1 is characterized in that: this catalyst activity protecting agent profile adopts bipyramid body structure, promptly evenly has several L type grooves (2) on the cambered surface of two circular cones of bicone (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01131647.0A CN1428191A (en) | 2001-12-28 | 2001-12-28 | Catalyst activity protecting agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01131647.0A CN1428191A (en) | 2001-12-28 | 2001-12-28 | Catalyst activity protecting agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1428191A true CN1428191A (en) | 2003-07-09 |
Family
ID=4670760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01131647.0A Pending CN1428191A (en) | 2001-12-28 | 2001-12-28 | Catalyst activity protecting agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1428191A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134166B (en) * | 2006-10-26 | 2010-07-14 | 湖南省醴陵市鑫荷化工填料有限公司 | Hydrogenation catalysts composite protective agent and manufacturing method thereof |
| CN108745266A (en) * | 2018-04-18 | 2018-11-06 | 萍乡市环新工业有限公司 | Efficient protective agent, preparation method, efficient protective agent structure |
-
2001
- 2001-12-28 CN CN01131647.0A patent/CN1428191A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134166B (en) * | 2006-10-26 | 2010-07-14 | 湖南省醴陵市鑫荷化工填料有限公司 | Hydrogenation catalysts composite protective agent and manufacturing method thereof |
| CN108745266A (en) * | 2018-04-18 | 2018-11-06 | 萍乡市环新工业有限公司 | Efficient protective agent, preparation method, efficient protective agent structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |