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A kind of preparation method of hydroisomerization/cracking catalyst and catalyst

A cracking catalyst, hydroisomerization technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc. The effect of increasing diesel content and lube base oil content, excellent isomerization performance, and good cracking performance

Active Publication Date: 2018-08-24
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, excessive cracking will also cause a sharp increase in light products, and the yield of target products (diesel or lubricating oil) will decrease, which not only reduces the performance of the product, but also reduces the yield, affecting economic benefits

Method used

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  • A kind of preparation method of hydroisomerization/cracking catalyst and catalyst
  • A kind of preparation method of hydroisomerization/cracking catalyst and catalyst
  • A kind of preparation method of hydroisomerization/cracking catalyst and catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Take 100 g of sodium-type ZSM-23 molecular sieve containing isopropylamine template agent, put it in 3 L of NaOH solution with a concentration of 0.2 mol / L, at 80 ° C, treat for 180 min, filter, wash until the eluent is neutral, dry and The template agent was removed by roasting; the resulting product was placed in 2 L of 0.5 mol / L NH 4 NO 3 In the solution, at 60°C, exchange for 180min, filter, wash with deionized water until the eluent becomes neutral, continuously exchange (repeat the above operation) twice, after drying at 120°C, calcinate at 550°C for 24h to obtain Hydrogen ZSM-23 molecular sieve (H-ZSM-23). Take 30g of alumina (γ-Al 2 O 3 ) mixed evenly with it, add 80g 5wt.% HNO 3 The solution was kneaded at room temperature for 2 hours, extruded at room temperature by an automatic extruder, dried naturally, dried at 120 °C for 4 hours, and calcined at 550 °C for 8 hours to obtain the molecular sieve carrier H-ZSM-23 carrier). Use 10 mL of platinum (Pt) 0.05...

Embodiment 2

[0031] Take 100 g of sodium-type ZSM-23 molecular sieve containing isopropylamine template agent, put it in 3 L of NaOH solution with a concentration of 0.4 mol / L, at 80 ° C, treat for 180 min, filter, wash until the eluent is neutral, dry and The template agent was removed by roasting; the resulting product was placed in 2 L of 0.5 mol / L NH 4 NO 3In the solution, at 60°C, exchange for 180min, filter, wash with deionized water until the eluent becomes neutral, continuously exchange (repeat the above operation) twice, after drying at 120°C, calcinate at 550°C for 24h to obtain Hydrogen ZSM-23 molecular sieve (H-ZSM-23). Take 30g of alumina (γ-Al 2 O 3 ) mixed evenly with it, add 80g 5wt.% HNO 3 The solution was kneaded at room temperature for 2 hours, extruded at room temperature by an automatic extruder, dried naturally, dried at 120 °C for 4 hours, and calcined at 550 °C for 8 hours to obtain the molecular sieve carrier H-ZSM-23 carrier). Use 10 mL of platinum (Pt) 0.05 ...

Embodiment 3

[0033] Take 100 g of sodium-type ZSM-23 molecular sieve containing isopropylamine template agent, put it in 3 L of NaOH solution with a concentration of 0.6 mol / L, at 80 ° C, treat for 180 min, filter, wash until the eluent is neutral, dry and The template agent was removed by roasting; the resulting product was placed in 2 L of 0.5 mol / L NH 4 NO 3 In the solution, at 60°C, exchange for 180min, filter, wash with deionized water until the eluent becomes neutral, continuously exchange (repeat the above operation) twice, after drying at 120°C, calcinate at 550°C for 24h to obtain Hydrogen ZSM-23 molecular sieve (H-ZSM-23). Take 30g of alumina (γ-Al 2 O 3 ) mixed evenly with it, add 80g 5wt.% HNO 3 The solution was kneaded at room temperature for 2 hours, extruded at room temperature by an automatic extruder, dried naturally, dried at 120 °C for 4 hours, and calcined at 550 °C for 8 hours to obtain the molecular sieve carrier H-ZSM-23 carrier). Use 10 mL of platinum (Pt) 0.05...

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Abstract

The invention relates to a preparation method of a hydroisomerization / cracking catalyst. The specific steps are as follows: the sodium-type ZSM-23 molecular sieve containing the template is treated with a certain concentration of alkali solution; the obtained product is washed with deionized water, dried and roasted to remove the template; then exchanged with ammonium nitrate solution, filtered, and washed with deionized water, dried and roasted to make hydrogen ZSM‑23 molecular sieve; kneading, molding and roasting hydrogen ZSM‑23 molecular sieve with amorphous oxide and acid solution to make carrier; impregnating the carrier in soluble salt in an aqueous solution, and then dried and calcined to obtain the catalyst. Compared with the catalysts used in the prior art, the catalyst provided by the invention has better catalytic activity and target product selectivity when used in the conversion process of Fischer-Tropsch synthesis wax.

Description

technical field [0001] The invention belongs to the field of molecular sieve catalysts, in particular to a preparation method of a ZSM-23 molecular sieve-based hydroisomerization / cracking catalyst. Background technique [0002] Fischer-Tropsch synthesis is abbreviated as FT reaction, which is based on synthesis gas (CO and H 2 ) as the raw material in the process of synthesizing liquid fuels based on paraffin hydrocarbons under catalysts (such as iron series, cobalt series, etc.) and appropriate reaction conditions. The traditional Fischer-Tropsch synthesis is characterized by wide distillation range distribution, high content of heavy hydrocarbons, and all of them are straight chain hydrocarbons. Such heavy alkanes have high freezing point and are not suitable for direct use as diesel oil or lubricating oil. Therefore, their freezing point must be reduced. The most important means of reducing the freezing point of n-paraffins is hydroisomerization and cracking. The long-c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/74C10G45/64C10G47/18
Inventor 王从新田志坚曲炜马怀军徐仁顺王炳春潘振栋王冬娥李鹏
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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