Method for preparing naphtha isomerization catalyst

A catalyst and isomerization technology, applied in physical/chemical process catalysts, reformed naphtha, molecular sieve catalysts, etc., can solve problems such as environmental pollution, octane number needs to be improved, and isomerization selectivity is not ideal

Active Publication Date: 2016-04-27
SINOPEC DALIAN RES INST OF PETROLEUM & PETROCHEM +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These two types of catalysts have problems such as polluting the environment and corroding equipment. The halogen-containing solid acid catalyst is easy to lose halogen, so there is strict control on the water in the raw material, and frequent halogen supplementation is required.
SO 4 2- / ZrO 2 Solid superacid catalysts have the advantages of high activity, good selectivity, easy phase separation from reactants and products, environmental friendliness, no corrosion of equipment, and regeneration. And has a high activity, is considered to be a promising isomerization catalyst, but there are shortcomings such as easy deactivation of the catalyst
[0004] CN1229368A discloses a solid acid catalyst and a preparation method thereof. The catalyst introduces alumina through a kneading method, which stabilizes tetragonal zirconia, but when it is used for alkane isomerization, the produced C 1 ~C 4 There are many low-carbon alkanes, and the isomerization selectivity is still not ideal
The above-mentioned catalyst still has problems such as high reaction temperature and octane number to be improved

Method used

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  • Method for preparing naphtha isomerization catalyst
  • Method for preparing naphtha isomerization catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Dissolve chloroplatinic acid containing 0.3 grams of platinum in 6 grams of water, fully mix 10 grams of 200-mesh cellulose with the above solution, and dry the mixture at 80°C for 6 hours to obtain platinum-loaded cellulose.

[0027] (2) Fully knead 45 grams of mordenite, 72 grams of aluminum hydroxide dry rubber powder (SB produced by Condean, Germany, 76% on a dry basis), platinum-loaded cellulose, 50ml of 0.2M nitric acid solution and 30ml of water , making it into a paste-like plastic, forming a cylindrical strip with a diameter of 1.5mm on an extruder, drying the cylindrical strip at 110° C. for 8 hours, and then roasting at 650° C. for 4 hours in an air atmosphere to obtain a catalyst product. The pore volume of the catalyst with a pore diameter of 1-10nm accounts for 5.9% of the total pore volume, and the pore volume of 100-1000nm accounts for 55.3% of the total pore volume. The catalyst composition is shown in Table 1, and the evaluation results are shown in...

Embodiment 2~8

[0029] The same as Example 1, the difference is that the types and amounts of various substances in each step have been adjusted, and the composition of the catalyst is different. The catalyst numbers of each embodiment are E-2~E-8, and the pore-forming catalysts used in each embodiment are The dosage and catalyst composition are shown in Table 1, and the evaluation results are shown in Table 2.

Embodiment 9

[0035]E1~E8 and C1~C2 were evaluated for catalyst performance. The evaluation conditions were as follows: take hydrorefined naphtha (RON=53) as raw material, take 20ml of catalyst, dilute it with 10ml of quartz sand and fill it into a fixed-bed micro-continuous Catalytic activity evaluation was carried out in the reactor. Before the evaluation, under the conditions of pressure 2MPa and temperature 200°C, pure hydrogen was passed in at a rate of 800 gas volume ratio (the volume ratio of the entering gas to the loading volume of the catalyst), and after 2 hours, the temperature was raised to 290°C and kept The time is 4 hours for catalyst activation; then the pressure and temperature are constant, the hydrogen hydrocarbon molar ratio is adjusted to 4, and the volume space velocity is 2.0h -1 Enter the raw material, at 290°C, 2.0MPa, volume space velocity 2.0h -1 , Under the condition that the molar ratio of hydrogen to hydrocarbon is 4.0, the reaction is a constant every 8 hour...

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Abstract

The invention discloses a method for preparing a naphtha isomerization catalyst. The method comprises the following steps: 1) active ingredients are loaded to a macropore pore-forming agent, then drying the active ingredients to obtain a modified pore-forming agent; and 2) a molecular sieve, a refractory oxide, the modified pore-forming agent, a peptizing agent and water are mixed, a mixture is shaped, striped, dried, and calcinated to obtain the catalyst product. The method has the advantages of simple process flow and low cost, and the catalyst product used in a naphtha isomerization reaction has the characteristics of high target product yield and high octane number.

Description

Technical field [0001] The present invention involves a method of preparation of an heterogeneous catalyst. Background technique [0002] Petroleum is the blood of modern industries. Petrochemical is a very important basic chemical industry. The alphabet (that is, petroleum) alleane (RON) produced by the constant decomposition process is generally between 45 ~ 60.Rehabilitation, alkylated or heterogeneous response changes the molecular structure, increasing the content of isanane and aromatics, and reducing the content of the direct chain hydrocarbon to achieve the purpose of improving the deleane value.However, clean gasoline now puts forward strict restrictions on the aromatics content, and the alkylization process will produce severe environmental pollution, which will greatly restrict the production of its scale.Economic and efficient technical routes of octane gasoline reconciliation components. [0003] The acid catalyst plays an important role in the petrochemical industry...

Claims

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Application Information

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IPC IPC(8): B01J29/18C10G35/095
Inventor 刘全杰徐会青贾立明王伟
Owner SINOPEC DALIAN RES INST OF PETROLEUM & PETROCHEM
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