专利摘要:
A process for converting hydrocarbon oils into products of lower average molecular weight and lower average boiling point comprising contacting a hydrocarbon oil at elevated temperature and pressure in the presence of hydrogen with a catalyst comprising a modified Y zeolite having a unit cell size below 24.45 Å, a degree of crystallinity which is at least retained at increasing SiO₂/Al₂O₃ molar ratios, a water adsorption capacity (at 25 °C and a p/po value of 0.2) of at least 8% by weight of modified zeolite and a pore volume of at least 0.25 ml/g wherein between 10% and 60% of the total pore volume is made up of pores having a diameter of at least 8 nm, an amorphous cracking component, a binder and at least one hydrogenation component of a Group VI metal and/or at least one hydrogenation component of a Group VIII metal. The invention also relates to catalyst compositions suitable for use in said process.
公开号:SU1722232A3
申请号:SU874202687
申请日:1987-05-27
公开日:1992-03-23
发明作者:Хук Аренд;Хейзинга Том;Эрнест Максвелл Ян
申请人:Шелл Интернэшнл Рисчерч Маатсхаппий, Б.В. (Фирма);
IPC主号:
专利说明:

Bonnot press on the stamp plate, giving a squeeze of 1.5 mm. The husks are dried at 120 ° C for 2 hours and finally annealed for 2 hours at 500 ° C. The obtained marc has a pore water content of 0.83 ml / g.
A solution of nickel and tungsten containing 107 g of nickel nitrate solution (14 wt.% Nickel), 76 g of water and 68 g of ammonium metavolphramate (69.5 wt.% Of tungsten) is prepared. 25.2 g of a nickel-tungsten solution is dissolved in water to 42 ml and 50 g of the said extract is used for impregnation. The impregnated squeeze is dried at 120 ° C for 4 hours and annealed for 1 hour at 500 ° C. The resulting product contains 2.6 wt.% Nickel (3.3% N10) and 8.2 wt.% Tungsten (10.3% WOa). The finished catalyst contains, wt%: modified zeolite 10.6; amorphous cracking additive 68.5; binder on a dried basis of 20.9.
Hydrocracking Experiment. The catalyst obtained is subjected to testing in the process of hydrocracking of heavy vacuum gas oil having the following properties:
Content, wt.%: G86.1
H13.9
S400
Wfppm) 9
d204 0.8277
Pour point, ° С 36 (A S TM D-97)
th.kip., ° С205
Boils away, vol.% At ° C: 10360
20399
30427
40447
50465
60482
70500
80521
90544
Final b.p., ° C 620 The catalyst is preliminarily subjected to sulfide treatment with slow heating in an atmosphere of hydrogen sulfide / hydrogen (% by volume 10) at 370 ° С. The catalyst was tested at a dilution equal to 1: 1 (volume), SiC particles of 0.2 mm in size under the following conditions: raw material feed rate 1.45 kg, H2S partial pressure 1.2 bar, total pressure 118 bar, gas / ratio raw material 1500 nlh. The experiment was carried out in one stage. When the raw material is cracked, the action of the catalyst is in the 50% by weight conversion of the fraction having so-called bales. 320 ° C after the release of the catalyst at a stable mode.
Required temperature 50 May. % conversion of the fraction boiling away at a temperature above 320 ° C (320 ° C) 351 ° C. You get the products, wt.%:
C1-C46
0 Cs-140 ° C40
140-320 ° C54
Hydrogen consumption 0.7% by weight. PRI mme R 2. Preparation of the catalyst.
5,295 g of a modified Voceolite having cells of 24.37A in size, the capacity for absorbing moisture (at 25 ° C and a ratio, 2) of 11.8 wt.%, The volume of carbon pores 0.28 ml / g, where 21% of the total
0 pore volume is occupied by pores with a diameter of more than 8 nm, loss on annealing (550 ° C) is 6.8 wt.%, Mixed with 337 g of an amorphous mixture — 75 wt.% Silicon dioxide and 25 wt.% Alumina with a loss of burning
5 18.4 wt.%. To this powder mixture is added a mixture of 500 g of water and 175 g of hydrated alumina, having a firing loss of 21.4% by weight, and 6.8 g of acetic acid. After stirring the mixture obtained,
0 is squeezed out in a Bonnot press onto a stamp plate giving a squeeze of 1.5 mm. The squeeze is dried at 120 ° C for 2 hours and subjected to final annealing for 2 hours at 500 ° C. The obtained marc
5 contain pores with water in the amount of 0.73 ml / g.
Prepare a nickel-tungsten solution containing 107.2 g of nickel nitrate solution (14% by weight nickel), 76 g of water and 68.4 g
0 Ammonium metatungstate (69.5 wt.% Tungsten) 25.2 g of a solution of nickel with tungsten is diluted with water to 36.5 ml and it is impregnated with 50 g of the specified extracts. After homogenization of the impregnated product
5 for 1 h with the use of a rolling squeeze device, dried for 1 h at 120 ° C and annealed for 1 h at 500 ° C. They contain 2.6 wt.% Nickel (3.3% NiO) and 8.2 wt.% Tungsten (10.3%
0 LYuZ). The finished catalyst contains 36.6 May. % modified V zeolite, 41.8% by weight of an amorphous cracking additive, and 21.6% by weight of a binding additive on a dry basis. Cracking experiment.
5 The resulting catalyst is subjected to the sulfide treatment of Example 1 and then tested under the same conditions to convert a 50 wt.% Fraction to 320 ° C +.
A transformation temperature of 324 ° C is required.
At the same time receive products, May.%:
Ci-C49
Sat-140 ° C41
140-320 ° C49
Hydrogen consumption 0.9 mas.%.
Example Preparation of the catalyst.
An ultra stable ammonium V zeolite having a cell of 24.57 A, with a sodium content of 0.12 wt.% With a ratio of SiO2 / A20 of about 6, is subjected to ion exchange treatment in a solution of 0.2 M ammonium sulfate under reverse current conditions. After that, the resulting material is subjected to annealing in a stream for 1 h at 700 ° C.
The resulting annealed material has a cell size of 24.30 A and a molar ratio of SiO2 / A1203 of 6.85.
The resulting material is further subjected to ion exchange treatment in aluminum sulphate of 0.16 M for 1 hour in countercurrent, and then treated under the same conditions in 1M ammonium nitrate. This treatment is repeated once. The obtained modified V zeolite has a cell size of 24.32A and a molar ratio of SO2 / A1203 of 10.2
317 g of modified V zeolite, having cells of size 24.32 A, molar ratio SiO2 / A120C 10.2, ability to absorb moisture (at 25 ° С and, 2) 10.6 wt.%, Volume of nitrogen pores 0 , 47 ml / g, where 27% of the total pore volume occupies pores with a diameter of more than 8 nm, and the annealing loss is 21 wt.% (At 550 ° C), mixed with 356 g of an amorphous additive 75 wt.% Of silicon dioxide and 25 wt.% Alumina with annealing losses of 30 May,% and 168 g of hydrated alumina, which has annealing losses of 25.8 wt.%. To this mixture is added a solution of 18.8 g of acetic acid and 342 g of water. After mixing, the resulting mixture is extruded in a Bonnot press onto a die plate, thereby producing a squeeze of 1.5 mm. The squeeze is dried for 2 hours at 120 ° C and annealed for 2 hours at 500 ° C. The resulting squeeze has a water pore volume of 0.71 ml / g.
A solution of nickel and tungsten is prepared, containing 214 g of nickel nitrate solution (14 wt.% Nickel), 150 g of water and 136.7 g of ammonium metatungstate (69.5 wt.% Of tungsten), 65.7 g of nickel and tungsten solution. diluted with water to 93 ml and used for impregnation 131 g of the said extract. After homogenization of the impregnated squeeze for 1 hour using a rolling device, the squeeze is dried for 2 hours at 120 ° C and finally annealed for 1 hour at 500 ° C. The product contains 2.6 wt.% Nickel (3.3% NiO) and 8.2 wt.% Tungsten (10.3% Moz). The finished catalyst contains 37.7% by weight of modified V zeolite, 42.3% by weight of an amorphous cracking component, and 20.0% by weight of a binder on a dry basis.
Cracking experiment.
The catalyst obtained is subjected to the preliminary sulfide treatment of Example 1 and then tested under the conditions of Example 2 to convert 50% by weight, to a fraction of 320 ° C +.
A temperature of 50% by weight of a conversion of 330 ° C is required,
You get the products, wt.%:
C1-C4 7
C5-140 ° C40
140-320 ° C, 53
The consumption of hydrogen 0.8 wt.% ..
PRI me R 4 (comparative). Preparation of the catalyst.
113.8 g of an ultrastable V zeolite having 24.56 A cells, a degree of moisture absorption (at 25 ° C and a P / Po ratio of 0.2) 24 wt.% And a carbon pore volume of 0.38 ml / g, in which 8% of the total pore volume is occupied by pores having a diameter of more than 8 nm, and annealing losses (550 ° C) 21% by weight, mixed with 626 g of amorphous silica-alumina having annealing losses (550 ° C) 18, 5 wt.%. With this powder mixture, a solution of 500 g of water and 191 g of hydrated alumina, having annealing loss of 22% by weight, and 7.5 g of acetic acid, is added. After stirring the resulting mixture, it is passed through a Bonnot press to the plate, thereby producing a squeeze in mm. The squeeze is dried for 2 hours at 120 ° C and finally annealed for 2 hours at 500 ° C. The resulting squeeze has a water pore volume of 0.80 ml / g. A solution of nickel with tungsten containing 107.3 g of nickel nitrate (14 wt.% Nickel), 76% water and 68.4 g of ammonium metatungstate (69.5 wt.% Tungsten) is prepared. The resulting 50 g of the specified marc is impregnated with 40 ml of a solution containing water and 25.2 g of a solution of nickel with tungsten. After homogenization of the impregnated marc for 1 h with the use of a rolling mill, the marc is dried for 2 h at 120 ° C and annealed for 1 h at 500 ° C. The resulting product contains 2.6 wt.% (3.3% N10) nickel and 8.2 wt.% Tungsten (10.3% WOs). The finished catalyst contains 12.2% by weight of zeolite, 67.3% by weight of ammonium cracking component and 20.5% by weight of binder on a dry basis.
Cracking experiments.
The catalyst obtained is subjected to the preliminary sulfide treatment of Example 1 and then subjected to the test under the conditions of Example 1 to convert a 50 wt.% Fraction to 320 ° C +.
The required temperature is 50 wt.% - conversion of the fraction 320 ° C + 361 ° C.
You get the products, wt.%:
C1-C49
C5-140 ° C56
140-320 ° C35
Hydrogen consumption 1.0 wt.%.
PRI me R 5 (comparative). Preparation of the catalyst.
379.3 g of an ultrastable V zeolite with 24.56 A cells, a degree of moisture absorption (at 25 ° C and a P / Po ratio of 0.2) 24 wt.%, And the volume of carbon pores is 0.38 ml / g, in which 8% of the total pore volume is occupied by pores having a diameter of more than 8 nm, and annealing losses (550 ° C) 21% by weight, mixed with 368 g of amorphous silicon dioxide and aluminum oxide having annealing losses (550 ° C) 18, May 5 % To this powder mixture is added a solution containing 191.1 g of hydrated alumina, 500 g of water and 7.5 g of acetic acid. After stirring, the mixture is passed through a Bonnot press to a plate, thereby producing a squeeze of 1.5 mm. The squeeze is dried for 2 hours at 120 ° C and finally annealed at 500 ° C for 2 hours. The resulting squeeze has an aqueous pore volume of 0.71 ml / g.
50 g of the marc thus obtained are impregnated with 36 ml of a solution containing water and 25.2 g of a solution consisting of 107.2 g of nickel nitrate (14% by weight of nickel), 76 g of water and 68.3 g of ammonium meta-tungstate (69, 5 wt.% Tungsten). After homogenization of the impregnated marc for 1 h using a rolling device, the impregnated marc is dried for 2 h at 120 ° C and annealed for 1 h at 500 ° C. They contain 2.6 wt.% Nickel (3.3% NiO) and 8.2 wt.% Tungsten (10.3% L / Oz). The finished catalyst contains 40.4% by weight of a zeolite, 39.2% by weight of an amorphous cracking component and 20.4% by weight of a binder on a dry basis.
Cracking experiments.
The described catalyst is subjected to a preliminary sulfide treatment according to Example 1 and then subjected to the test under the conditions of Example 1 and for a 50 wt.% Conversion of the fraction to 320 ° C +.
A transformation temperature of 338 ° C is required.
You get the products, wt.%:
C1-C422
C5-140 ° C58
140-320 ° C20
The consumption of hydrogen is 1.2 wt.%. Example 6. Preparing other catalysts using modified type V zeolite from Example 3. Compositions are prepared by impregnation and co-milling. The resulting compositions of the catalysts are given in Table. one.
Experiments on hydrocracking. The described catalysts are tested in a hydrocracking process using gas oil with the following properties:
Content, wt.%: C86.2
H13,8
d7040,826
Viscosity at 100 ° C
cSt4,87 (A5TMD-445)
RCT, wt.% 0.05 (A5TMD-542)
Initial t. Kip., ° С 205 Boils away, vol.%, At a temperature, ° С 10-20332-370
30-40392-410
50-60428-448
70-80467-492
90525
Finite m. Bale, C598
The catalysts are pre-asserted in example 1, then they are tested at a dilution of 1: 1 (volume) with 0.2 mm SiC particles under the following conditions: volume velocity 1.1 kg / ls, partial pressure 1, 4 bar, total pressure 130 bar, gas / feed ratio 1000 nl / kg. The temperature is maintained at a level at which 70% by weight conversion of the 300 ° C + fraction is provided.
The results are shown in Table. 2. EXAMPLE 7. The described catalysts are tested in a hydrocracking experiment using vacuum gas oil having the following characteristics: below 180 ° C boils out 0.1 wt.%, At 180-30 ° C 30.7 wt. .%, above 370 ° С 69.2 wt.%. The catalysts are subjected to preliminary osnification, then tested at a volume dilution of 1: 1 with SiC particles of 0.1 mm in size under the following conditions: total pressure 60 bar, Ratio / feed 240 nl / kg, Per / feed ratio 30 nl / kg, NL / raw material ratio 1.9 nl / kg, volumetric rate 1.8 kg / lh. The hydrogen partial pressure is 53 bar / Temperature is maintained in order to achieve the same conversion of the fraction of 370 ° C +, i.e. one in which 48.4 wt.%
fractions 370 ° C + are not converted.
The results are shown in Table. 3
PRI me R 8. The catalyst (presulphurized) according to example 1 is tested in the hydrocracking process of a distillate in the vapor phase obtained after preliminary catalytic hydrocracking having the following characteristics:
Initial boiling point, ° С 259 Boils away, vol.%, At temperature ° С: 2-10287-353
30-30384-407
40-50426-444
60-70460-481
80-90505-539
Final boiling point, ° С598
The catalyst is tested when diluted with particles of 0.2 mm in size under the following conditions: bulk velocity 0.75 kg / lh, partial pressure H2 2 bar, total pressure 130 bar, gas / feed ratio 1500 nl / kg.
Temperature 56 wt.% - conversion of the fraction 300 ° C + 334 ° C.
You get the products, wt.%: Ci-C43
C5-130 ° SZ35
130-300 ° C62
Thus, the proposed method allows to increase the yield of gas oil from 36.9 to 40.7 wt.%
权利要求:
Claims (3)
[1]
Claim 1. Method of hydrocracking heavy hydrocarbon oils by contacting the feedstock in the presence of hydrogen at elevated temperature and pressure with a pre-sulphurized catalyst containing modified type V zeolite, cracking additive — a mixture of amorphous silica and alumina, hydrogenating component — nickel oxide, molybdenum oxide or tungsten oxide, binder - alumina, to obtain the desired products having a lower average molecular weight and a lower average bilge point Not characterized in that, in order to increase the yield of the target gas oil, a catalyst is used which contains, as a modified type V zeolite, a zeolite having
cell size is 24.32-24.37 A, with a degree of crystallinity that is preserved with increasing molar ratios SI02 / AI203, which has the ability to absorb moisture at 25 ° C and the value, 2, where P is the partial pressure of water vapor, MPa;
Ro is the water saturation pressure at 25 ° С, MPa, equal to 10.6-11.8 wt.%, With a pore volume of 0.28-0.47 mg / r, and 21-27% of the total pore volume was There are pores with a diameter of more than 8 nm, in the following ratio of components, wt.%:
Nickel oxide 3.3-6.4
Molybdenum oxide
or tungsten oxide 6.4-20.2
Modified
zeolittip / 8,1-36,1
Cracking additive 27,1-59,2 Oxide of aluminum Else
[2]
2, the method according to claim 1, from l and which is consistent with the fact that the hydrocracking is carried out at a hydrogen pressure of 60-130 bar, the volumetric feed rate of the raw material is 1.1-1.8 kg / l. h,
temperature 325-365 ° C
[3]
3. Catalyst for hydrocracking of heavy hydrocarbon oils containing modified type V zeolite, cracking additive — mixture of amorphous dioxide
silicon and alumina, binder - alumina and hydrogenating component - nickel oxide and molybdenum oxide or tungsten oxide, characterized in that, in order to increase the selectivity of the catalyst and the mash, it contains a zeolite with a cell size of 24.32 as a modified zeolite -24.37 A with a degree of crystallinity remaining constant with increasing molar ratios
ЗЮ2 / А120з, having the ability to absorb moisture at 25 ° C and a value of 2, where P is the partial pressure of water vapor, MPa. Ro is the water saturation pressure at 25 ° C, MPa, equal to 10.6-11.8 wt.% with a pore volume of 0.28-0.47 ml / g, with 21-27% of the total pore volume constituting pores with a diameter of more than 8 nm, with the following content of components, wt.%: Modified
type V8,1-36,1 zeolite
Nickel oxide 3.3-6.4
Molybdenum oxide or tungsten oxide 6.4-20.2 Cracking additive 27.1-59.2
Alumina Rest
Table 1
table 2
Table 3
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法律状态:
优先权:
申请号 | 申请日 | 专利标题
GB868613131A|GB8613131D0|1986-05-30|1986-05-30|Hydrocarbon conversion|
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