CN1253985A - Mixed solution containing silicon and boron and its preparation - Google Patents
Mixed solution containing silicon and boron and its preparation Download PDFInfo
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- CN1253985A CN1253985A CN 98114492 CN98114492A CN1253985A CN 1253985 A CN1253985 A CN 1253985A CN 98114492 CN98114492 CN 98114492 CN 98114492 A CN98114492 A CN 98114492A CN 1253985 A CN1253985 A CN 1253985A
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- mixing solutions
- solution
- boric acid
- add
- ammoniacal liquor
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The present invention relates to a mixed solution containing Si and B for preparing petroleum fraction hydrogenation treatment catalyst and its preparation method. Said solution contains converted SiO2 (10-130 g/l) and B2O3 (10-130 g/l). This solution is mainly characterized by that it contains no alkali metal and alkaline earth metal ions, and its stability is good. Said solution can be used for preparing petroleum fraction hydrogenation treatment catalyst in petroleum refining industry, and the Si and B are used as composite adjuvant of said catalyst.
Description
The present invention relates to the technology of preparing of petroleum fractions hydrotreating catalyst, adjuvant used solution and preparation thereof when particularly preparing the petroleum fractions hydrotreating catalyst.
The petroleum fractions hydrotreating catalyst is carrier usually with the aluminum oxide, is active ingredient with W (or Mo) and Ni (or Co), and often adds Si and B as auxiliary agent.For example in Chinese invention patent ZL89109140.8 and ZL92112511.9, all add Si and B simultaneously as auxiliary agent.Last piece of writing patent about Si and B carrying method is: add water glass (water glass) in preparation pseudo-boehmite process, remove sodium ion by washing then, the load of boron realizes by Mo-B mixing solutions dipping, the one piece of patent in back is identical with the former about the carrying method of B, but the load of its Si is reached by add silicon sol in the dried glue kneading process of pseudo-boehmite.
Before proposing, the present invention do not see report as yet about the Si-B mixing solutions, so when requiring catalyzer to contain Si and B simultaneously, they can only add step by step, because alumina surface is uneven, the various active center is arranged, and stronger interaction (Catal.Rev.-Sci.Eng.17 (1978) 31) can both take place with aluminum oxide in silicon and boron, when Si contacts with carrier earlier, its interaction must be better than B and carrier interactions, influences giving full play to of Si-B synergistic effect thus.Therefore best load target should be to make Si and B load simultaneously and be evenly distributed on the carrier micropore surface.This target can only rely on Si-B mixing solutions single-steeping to realize.
Purpose of the present invention just provides a kind of Si-B mixing solutions and compound method thereof that is used to prepare the petroleum fractions hydrotreating catalyst.
Because the petroleum fractions hydrotreating catalyst has strict restriction to the alkalies and alkaline earth constituent content, preferably alkali-free metal and alkali earth metal, particularly can not contain sodium (Na) element, can not contain the alkalies and alkaline earth ion so be used for the Si-B mixing solutions of above-mentioned target, so unavailable water dissolubility and the good water glass of cosolvency are preparation of raw material Si-B mixing solutions.In the present invention, selecting silicon sol and solid boric acid cheap and easy to get and that do not contain sodium ion for use is raw material, in order to be made into the higher Si-B mixed stability solution of concentration with these two kinds of raw materials, must solve following two technical problems: the one, increase boric acid solubleness (under the room temperature) in water, the 2nd, avoid silicon sol and silicon boron mixing solutions coagulation.
In order to solve first technical problem, having adopted with ammoniacal liquor is the technical measures of solvent, and ammoniacal liquor can carry out complex reaction with boric acid, interrupts the intermolecular hydrogen bond of boric acid, thereby improves the solubleness of boric acid in water under the room temperature.In order to solve second technical problem, the major measure that is adopted is the pH value of the way of contact, system of control silicon sol and boric acid-ammonia soln and temperature etc., more particularly, the way of contact of control silicon sol and boric acid-ammonia soln refers to and makes silicon sol be dispersed in boric acid-ammonia soln quickly and evenly, with the pH value of the ammoniacal liquor hierarchy of control between 6～8, mixed solution system is more stable, and hierarchy of control temperature just is unlikely to make the solution coagulation between room temperature to 45 ℃.
In order to obtain the silicon boron mixed stability solution of greater concn, adopted two kinds of stablizers to come stabilizing solution.Except ammoniacal liquor, also adopt polynary organic alcohol, such as N.F,USP MANNITOL, glycerol, polyvinyl alcohol and polyoxyethylene glycol etc., be the best wherein with N.F,USP MANNITOL, glycerol.Polynary organic alcohol and boric acid carry out complex reaction; strengthen the acidity and the solvability of boric acid; thereby the solubleness of boric acid in water under the raising room temperature; a certain amount of polynary organic alcohol; can on each micelle surface, all form tectum; prevented between the micelle or micelle and electrolyte ion between direct the contact, play effect stable and protection silicon boron mixing solutions, make it not occur flocculation and coagulation phenomenon.Adopt the bistable agent to come the silicon boron mixing solutions of stable high concentrations, wherein the consumption of stablizer and feed way are crucial technology, and its technical key point is the aqueous solution that is mixed with polynary organic alcohol earlier, adds required boric acid then at a certain temperature; And another kind of stablizer ammoniacal liquor adds earlier in the silicon sol, then the silicon sol that contains ammoniacal liquor is dispersed in the above-mentioned boric acid aqueous solution that contains polynary organic alcohol quickly and evenly.The pH value of the hierarchy of control is between 6～8 in the operating process, and mixed solution system is more stable, and the temperature of the hierarchy of control just is unlikely to make the solution coagulation between room temperature to 45 ℃.
The scope that solution chemistry of the present invention is formed is: SiO
2: 10～130g/l; B
2O
3: 10～130g/l; NH
3: 0～14g/l; Polynary organic alcohol: 0～100g/l, all the other are water.Wherein the concentration of ammoniacal liquor is mainly used in and regulates pH value and dissolving boric acid, because of the composition variation of solution greatly; And polynary organic alcohol can not add when silicon B solution concentration is low.
The concrete preparation process of solution of the present invention is as follows:
Add boric acid in ammonia soln in the temperature range of room temperature to 45 ℃, make the boric acid solution that contains ammoniacal liquor, dropwise add silicon sol then under stirring condition, the ammoniacal liquor add-on is that hierarchy of control pH value is between 6～8.
Or under the temperature of room temperature to 45 ℃, in polynary organic alcohol solution, add boric acid while stirring, and with silicon sol and ammoniacal liquor mixing solutions, under agitation condition, dropwise add in the above-mentioned boric acid solution, make desired silicon boron mixing solutions.
Advantage of the present invention is:
(1) provides a kind of brand-new silicon and boron mixing solutions, this solution alkali-free metal and alkaline earth gold of containing
Belong to ion, concentration is higher, good stability.
(2) the selected raw material of obtain solution is cheap and easy to get, helps industrial implementation.
(3) solution manufacturing method is easy is easy to get, and equipment is not had particular requirement.
When (4) utilizing the formulations prepared from solutions petroleum fractions hydrotreating catalyst invented, can make composite assistant silicon and
Boron loads on the alumina supporter simultaneously in the solution impregnation mode, and it is evenly distributed, and can fully send out
Wave the synergy between silicon-boron-aluminium three.
Further set forth the present invention with embodiment below.
Embodiment 1:
Get distilled water 370ml, add the ammonia soln 20ml of 7.76mol/l, constant temperature adds 48.3g technical grade boric acid in 30 ℃, makes the boric acid solution that contains ammoniacal liquor; (the new light remover in Shenyang City factory produces, and the pH value is 9.3, contains SiO to get the 76.0ml silicon sol
2: 30.0m%), under stirring condition, dropwise silicon sol is added in the above-mentioned solution, make the silicon boron mixing solutions of 500ml at last.The pH value of system is 6.75, and it consists of: SiO
2: 54.3g/l; B
2O
3: 54.2g/l; NH
3: 5.27g/l.
This solution is placed 30 days outward appearances does not have considerable change.
Embodiment 2:
Get distilled water 250ml, add 9.2g technical grade N.F,USP MANNITOL, at 40 ℃ of constant temperature, treat that N.F,USP MANNITOL dissolves fully after, under agitation condition, add technical grade boric acid 103g, boric acid can not dissolve fully.Get the 160ml silicon sol, add the ammonia soln 40ml of 7.76mol/l, after mixing, under agitation condition, dropwise add in the above-mentioned boric acid solution this silicon sol that contains ammoniacal liquor, continue to stir 60 minutes after adding silicon sol, make desired silicon boron mixing solutions 500ml.The pH value of system is 7.25, and it consists of: SiO
2: 115g/l; B
2O
3: 116g/l; NH
3: 7.92g/l; N.F,USP MANNITOL: 18.4g/l.
This solution is placed 30 days outward appearances does not have considerable change
Embodiment 3:
Get the solution 162ml among formed alumina carrier 200g and the embodiment 2 respectively, adopt the method load silicon and the boron of saturated dipping (spraying), through 120 ℃, after 3 hours dryings, be 500 ℃ in temperature, roasting is 3 hours under the blowing air condition, make the carrier that contains composite assistant, it consists of: Al
2O
3: 84.3m%; SiO
2: 7.76m%; B
2O
3: 7.82m%.Just become the petroleum fractions hydrotreating catalyst behind this carrier loaded active metal component.
Claims (5)
1. a Si-B mixing solutions that is used to prepare the petroleum fractions hydrotreating catalyst is characterized in that the chemical constitution of solution is: SiO
210～130g/l; B
2O
310～130g/l; NH
30～14g/l; Polynary organic pure 0～100g/l, all the other are water.
2. method of preparing the described Si-B mixing solutions of claim 1, it is characterized in that: in the temperature range of room temperature to 45 ℃, in ammonia soln, add boric acid, make the boric acid solution that contains ammoniacal liquor, dropwise add silicon sol then under stirring condition, the ammoniacal liquor add-on is that hierarchy of control pH value is between 6～8.
3. method of preparing the described Si-B mixing solutions of claim 1, it is characterized in that: under the temperature of room temperature to 45 ℃, in polynary organic alcohol solution, add boric acid while stirring, and with silicon sol and ammoniacal liquor mixing solutions, under agitation condition, dropwise add in the above-mentioned boric acid solution, make desired silicon boron mixing solutions.
4. according to the preparation method of the described Si-B mixing solutions of claim 3, it is characterized in that said polynary organic alcohol is N.F,USP MANNITOL, glycerol, polyvinyl alcohol and polyoxyethylene glycol.
5. the application of Si-B mixing solutions as claimed in claim 1 in PetroChina Company Limited. of preparation petroleum refining industry cut fraction hydrogenation processing catalyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98114492A CN1075546C (en) | 1998-11-18 | 1998-11-18 | Mixed solution containing silicon and boron and its preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98114492A CN1075546C (en) | 1998-11-18 | 1998-11-18 | Mixed solution containing silicon and boron and its preparation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1253985A true CN1253985A (en) | 2000-05-24 |
| CN1075546C CN1075546C (en) | 2001-11-28 |
Family
ID=5224151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98114492A Expired - Lifetime CN1075546C (en) | 1998-11-18 | 1998-11-18 | Mixed solution containing silicon and boron and its preparation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1075546C (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1019502B (en) * | 1989-12-11 | 1992-12-16 | 中国石油化工总公司抚顺石油化工研究院 | Hydrofined catalyst and preparing process thereof |
| CN1030395C (en) * | 1992-11-05 | 1995-11-29 | 中国石油化工总公司抚顺石油化工研究院 | Catalyzer for heavy oil hydrogenation and denitrification |
| FR2752568B1 (en) * | 1996-08-23 | 1998-09-25 | Inst Francais Du Petrole | DESALUMINATED ZEOLITHE OF NES STRUCTURAL TYPE, AND ITS USE IN DISMUTATION AND / OR TRANSALKYLATION OF ALKYLAROMATIC HYDROCARBONS |
-
1998
- 1998-11-18 CN CN98114492A patent/CN1075546C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1075546C (en) | 2001-11-28 |
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Granted publication date: 20011128 |
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