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Isobutane dehydrogenation catalyst, preparation method and dehydrogenation technology of isobutane dehydrogenation catalyst

A dehydrogenation catalyst, isobutane technology, applied in catalyst activation/preparation, catalyst, carbon compound catalyst, etc., can solve the problems of short service cycle, low catalyst stability, affecting production efficiency, etc., achieve high conversion rate, improve Activity and selectivity, the effect of a simple method

Inactive Publication Date: 2017-10-24
NANJING CHEM CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned catalyst and preparation method effectively improve the catalyst activity and isobutane conversion rate, but the service life is short and the catalyst stability is low, which affects the production efficiency

Method used

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  • Isobutane dehydrogenation catalyst, preparation method and dehydrogenation technology of isobutane dehydrogenation catalyst
  • Isobutane dehydrogenation catalyst, preparation method and dehydrogenation technology of isobutane dehydrogenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Take a certain amount of formed alumina carrier and put it into the impregnation equipment;

[0030] (2) Take a certain amount of chloroplatinic acid H 2 PtCl 6 (calculated as 0.15% Pt), dissolved with an appropriate amount of dilute hydrochloric acid, added to the carrier, impregnated under negative pressure -0.07MPa for 1 hour, then dried at 110°C for 10 hours, and calcined at 500°C for 4 hours in air atmosphere ;

[0031] (3) Weigh an appropriate amount of tin tetrachloride SnCl 4 (calculated as 0.35% Sn), after dissolving with an appropriate amount of deionized water, add the carrier obtained in step (2), dip for 1 hour under negative pressure -0.07MPa, then dry at 110°C for 10 hours, Baking at 500°C for 4 hours;

[0032] (4) Weigh an appropriate amount of potassium chloride (in terms of 0.5% K), dissolve it with an appropriate amount of deionized water, add the carrier obtained in step (3), and immerse it for 1 hour under a negative pressure of -0.07MPa, th...

Embodiment 2

[0036] (1) Take a certain amount of formed alumina carrier and put it into the impregnation equipment;

[0037] (2) Take a certain amount of chloroplatinic acid H 2 PtCl 6 (calculated as 0.08% Pt), dissolved with an appropriate amount of dilute hydrochloric acid, added to the carrier, impregnated under negative pressure -0.04MPa for 1 hour, then dried at 110°C for 10 hours, and calcined at 500°C for 2 hours in air atmosphere ;

[0038] (3) Weigh an appropriate amount of tin tetrachloride SnCl 4 (calculated as 0.3% Sn), after dissolving with an appropriate amount of deionized water, add the carrier obtained in step (2), soak for 1 hour under negative pressure -0.04MPa, then dry at 110°C for 10 hours, and Baking at 500°C for 2 hours;

[0039](4) Weigh an appropriate amount of potassium chloride (in terms of 0.3% K), dissolve it with an appropriate amount of deionized water, add the carrier obtained in step (3), and immerse it for 1 hour under a negative pressure of -0.04MPa,...

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Abstract

The invention relates to the technical field of catalytic dehydrogenation, in particular to an isobutane dehydrogenation catalyst, and a preparation method and a dehydrogenation technology of the isobutane dehydrogenation catalyst. The preparation method comprises the following steps of: step I, preparing an appropriate amount of platinum metal dipping solution, adding into a carrier, performing dipping at negative pressure, drying and roasting the dipped carrier, step II, preparing an appropriate amount of first assistant dipping solution, adding into the carrier treated in step I, performing the dipping at the negative pressure, drying and roasting the dipped carrier, step III, preparing an appropriate amount of second assistant dipping solution, adding into the carrier treated in step II, performing the dipping at the negative pressure, drying and roasting the dipped carrier, and step IV, repeating step I to step III for many times, and obtaining the isobutane dehydrogenation catalyst. An active component is loaded onto the catalyst stepwise for many times by a dipping method, so that the active component can be distributed on the catalyst more uniformly, and the activity of the catalyst is higher and more stable.

Description

technical field [0001] The invention relates to the technical field of catalytic dehydrogenation, in particular to an isobutane dehydrogenation catalyst and a preparation method thereof, and a dehydrogenation process for preparing isobutene from isobutane dehydrogenation using the catalyst. Background technique [0002] Liquefied petroleum gas (LPG) is a by-product of catalytic cracking units and steam cracking units. At present, the vast majority of liquefied petroleum gas is used as low-cost civilian liquefied petroleum gas, the comprehensive utilization rate is low, and the value has not been reasonably developed. With the implementation of the "West-to-East Gas Pipeline" and civil natural gas pipeline projects, clean, efficient and high-heat utilization natural gas will inevitably replace the fuel market of liquefied gas, which will cause a further backlog of liquefied gas in refineries and lead to excess. Therefore, using C4 olefins and isobutane in liquefied petroleum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/135C07C5/333C07C11/09B01J37/08B01J37/02B01J37/18B01J27/32B01J38/02
CPCB01J27/135B01J27/32B01J37/0205B01J37/082B01J37/18B01J38/02C07C5/333C07C2527/135C07C11/09Y02P20/584
Inventor 陈鉴
Owner NANJING CHEM CHEM TECH CO LTD
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