Hydrocatalyst and its preparing process

A hydrogenation catalyst and catalyst technology, applied in the fields of refined hydrocarbon oil, petroleum industry, reforming naphtha, etc., can solve the problems of octane number reduction, gasoline octane number reduction, cumbersome process, etc., and achieve strong isomerization Activity and aromatization ability, effect of good hydrodesulfurization activity

Inactive Publication Date: 2002-07-03
LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when conventional hydrorefining catalysts are used to treat catalytic gasoline, while reducing the content of sulfur, olefins and aromatics in gasoline, improving the color and stability of catalytic gasoline, it reduces the octane number of gasoline, and the octane number loss is the largest Up to a dozen units
For example, US Patent No. 6,042,719 introduced a new process for deep desulfurization of catalytic gasoline. Although the refined product has achieved the desulfurization effect, the octane number has declined, and the octane number loss of the motor method can reach 5%. The octane number of the research method Loss up to 10%
Introduced in U.S. Patent US5041208 a kind of high SiO 2 / Al 2 o 3 Compared with the faujasite precious metal platinum hydrogenation catalyst, it can effectively reduce the sulfur content in catalytic gasoline and increase its octane number. The final boiling point of the oil does not exceed 177°C, and the process is relatively cumbersome. During the processing, the raw oil needs to be pre-fractionated to separate the light fraction below 82°C. After the other fractions are hydrogenated and upgraded, the light fraction is reconciled to The final product is obtained from the upgraded gasoline

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 100g of industrial hydrated titanium oxide, 60g of SB aluminum hydroxide powder, 80g of ZSM-5 molecular sieve modified by zinc nitrate, wherein zinc nitrate accounts for 5% of the modified ZSM-5 molecular sieve, after mixing evenly, add 8g of squash powder, 24g of polyethylene glycol, 5g of citric acid, 30ml of 65% nitric acid and appropriate amount of deionized water, kneaded and extruded into Φ1.6mm strips, dried at 110°C for 4h, and then roasted at 550°C for 4h to make carrier a , and its physical and chemical properties are listed in Table 1.

[0018] The physicochemical property of table 1 carrier

[0019] No. Pore volume, ml / g Specific surface area, m 2 / g crushing strength, N / cm

[0020] a 0.45 280 230

[0021] b 0.39 265 250

[0022] c 0.43 275 226

[0023] d 0.40 270 221

[0024] Add ammonium molybdate and cobalt nitrate to deionized water, and the solution composition is 50g ammonium molybdate / 100ml, 35g cobalt nitrate / 100ml. Imm...

Embodiment 2

[0026] 100g of industrial hydrated titanium oxide, 60g of SB aluminum hydroxide powder, 50g of ZSM-5 molecular sieve modified by zinc nitrate, wherein zinc nitrate accounts for 5% of the modified ZSM-5 molecular sieve, after mixing evenly, add 7g of squash powder, 21g of polyethylene glycol, 4g of citric acid, 25ml of 65% nitric acid and appropriate amount of deionized water, kneaded and extruded into Φ1.6mm strips, dried at 110°C for 4h, and then roasted at 550°C for 4h to make carrier b , and its physical and chemical properties are listed in Table 1

[0027] Add ammonium molybdate and nickel nitrate into deionized water, and the solution composition is 50g ammonium molybdate / 100ml, 36.6g nickel nitrate / 100ml. Saturated spray impregnation was performed on 100 g of carrier b. Stand at room temperature for 10 hours, dry at 110°C for 4 hours, and then calcinate at 500°C for 4 hours to prepare Catalyst B, whose physical and chemical properties are shown in Table 2.

Embodiment 3

[0029] Industrial hydrated titanium oxide 100g, SB aluminum hydroxide powder 60g, 80g of ZSM-5 molecular sieve modified through ammonium dihydrogen phosphate, wherein ammonium dihydrogen phosphate accounts for 3.5% of the ZSM-5 molecular sieve after modification, according to the method of embodiment 1 Carrier C was made, and the properties of the carrier were shown in Table 1; then catalyst C was made according to the method of Example 1, and its properties were shown in Table 2.

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PUM

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Abstract

A hydrocatalyst for decreasing S and olefine contents in poor gasoline and increasing its octane value is prepared from the metallic active component which is two or three of MoOe, CoO and NiO and the carrier prepared from TiO2, modified ZSM-5 molecular sieve and adhesive.

Description

technical field [0001] The invention relates to a catalyst used in the hydrogenation process of hydrocarbons, more specifically to a hydrogenation upgrading catalyst for inferior gasoline, and also relates to a preparation method of the hydrogenation catalyst. Background technique [0002] With the increasingly stringent environmental regulations around the world, people have higher and higher requirements on the quality of fuel oil, and the production of clean fuel is becoming more and more important. In the "World Fuel Charter", grade II gasoline requires an octane number (RON) of not less than 91, a sulfur content of not more than 200 μg / g, aromatics not higher than 40%, and olefins not higher than 20%. The purpose of limiting the content of olefins, aromatics and sulfur in gasoline is to reduce harmful substances in vehicle exhaust emissions and reduce air pollution. Since the finished gasoline in my country is mainly composed of catalytic cracking gasoline, the sulfur ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G35/095C10G45/12
Inventor 孙殿成王更新霍宏敏赵晓青胡永慧朱豫飞王国良王龙延魏宜谦
Owner LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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