Catalytic dewaxing catalyst and its preparation thereof
A catalytic dewaxing and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of low liquid yield and poor activity, and achieve lower pour point and cloud point, and dewaxing selection. Sex-enhancing effect
Active Publication Date: 2010-08-25
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
The selectivity of the catalyst has been improved, but the activity is poor and the liquid yield is low
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Abstract
The catalyst for catalyzing dewaxing process contains one carrier containing ZSM-5 molecular sieve and matrix, and one metal component with hydrogenating activity in the effective amount supported on the carrier. The preparation process of the catalyst includes one step of contacting the carrier containing ZSM-5 molecular sieve and matrix with mixed medium comprising water solution of organic amine and air, and one step of introducing metal component with hydrogenating activity to the carrier. The water solution of organic amine has organic amine content of 0.1-5 wt%, the ratio between the water solution and the carrier is 0.1-5 g / g.hr, and the ratio between the air and the carrier is 0.5-5 l / g.hr. The catalyst is especially suitable for catalyzing dewaxing process of lubricating oil fraction.
Description
technical field The invention relates to a distillate oil catalytic dewaxing catalyst and a preparation method thereof. Background technique Dewaxing is necessary to produce products with good fluidity at low temperature from waxy raw materials, such as lubricating oil, jet fuel, low freezing point diesel, etc. The wax mentioned therein refers to long-chain normal alkanes or long-chain hydrocarbon compounds with a small amount of short side chains, including long-chain alkanes with a small amount of short side chains, long-chain alkyl aromatics and long-chain alkyl cycloalkanes . The traditional dewaxing method uses the solvent dewaxing process, the main disadvantages of which are high operating costs, high energy consumption, and limited freezing point depression. Another dewaxing method is catalytic dewaxing, which uses the unique pores and appropriate acidity of molecular sieve catalysts to select the wax components in the raw oil at a certain temperature and hydrogen p...
Claims
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IPC IPC(8): B01J29/42C10G73/02
Inventor 黄卫国康小洪刘广元夏国富聂红石亚华李大东
Owner CHINA PETROLEUM & CHEM CORP