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Cracking gas deoxidation catalyst as well as preparation method and application thereof
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A gas deoxidation catalyst and gas cracking technology, applied in the field of olefin purification, can solve the problems of frequent regeneration of deoxidizers, etc.
Pending Publication Date: 2021-09-14
SHANDONG JINGBO PETROCHEM +1
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The deoxidizer is suitable for the removal of 100-200ppm oxygen in the refinerydry gas, and the increase of the oxygen content of the raw material will inevitably lead to frequent regeneration of the deoxidizer
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[0034] The present invention also provides a method for preparing the cracked gas deoxygenation catalyst described in the above technical solution, comprising the following steps:
[0035] a) mixing the precursor of metal MO, acid and water to obtain a metal salt solution;
[0036] b) Mn 3 o 4 The precursor and the binder are mixed evenly, and then the metal salt solution obtained in step a) is put in, and after molding, it is dried, dried and roasted in sequence to obtain a cracked gas deoxidation catalyst.
[0037] In the present invention, firstly, the metal MO precursor, acid and water are mixed to obtain a metal salt solution. In the present invention, the precursor of the metal MO is preferably any of the soluble nitrate, chloride, acetate, basic carbonate or oxalate of the metal MO, and the present invention relates to its type and source There are no special restrictions. It can be seen from the description that the metal MO is NiO and / or CuO, the precursor of the ...
Embodiment 1
[0059] Weigh 39.90g deionized water, dissolve 0.40g 65wt% concentrated nitric acid, 1.77g nickelnitrate, and 7.14g coppernitrate in deionized water, stir evenly, and the solution appears transparent; then weigh 76.12g manganesecarbonate, 59.85g pseudo thin After diaspore, 6.65g of high aluminacement, and solidpowder are mixed evenly, put the prepared impregnating solution into it, knead evenly, extrude into a 2mm cylindrical shape, dry at room temperature for 8 hours, dry at 120°C for 6 hours, and in air atmosphere at 500°C Calcined for 4h to obtain catalyst C-1.
Embodiment 2
[0061] Weigh 42.00g of deionized water, dissolve 0.42g of 65wt% concentrated nitric acid, 3.93g of nickel nitrate, and 11.91g of copper nitrate in deionized water, stir evenly, and the solution appears transparent; then weigh 68.50g of manganesecarbonate, 63.00g of pseudo thin After diaspore, 7.00g of high aluminacement, and solidpowder are mixed evenly, put the prepared impregnating solution into it, knead evenly, extrude into a 2mm cylindrical shape, dry at room temperature for 6 hours, dry at 110°C for 8 hours, and air at 450°C Calcined for 4h to obtain catalyst C-2.
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Abstract
The invention provides a cracking gas deoxidation catalyst as well as a preparation method and application thereof. The cracking gas deoxidation catalyst is prepared by mixing a metalactive component and a binder; the metalactive component is a composite oxide of Mn3O4 and metal MO; the metal MO is NiO and / or CuO; and the mass ratio of the Mn3O4 to the metal MO is 1:(0.05-0.15). Compared with the prior art, the cracking gas deoxidation catalyst provided by the invention adopts components with specific content, so that relatively good overall interaction is realized; and the cracking gas deoxidation catalyst is mild in application condition, high in deoxidation precision and capacity, suitable for purification and deoxidation of olefin raw materials containing hydrogen, and especially suitable for removal of oxygen with the catalytic cracking gas content being 0.1% or below.
Description
technical field [0001] The invention relates to the technical field of olefin purification, and more specifically relates to a cracked gas deoxygenation catalyst and its preparation method and application. Background technique [0002] Ethylene and propylene are important basic raw materials for downstream polyolefin materials, and trace oxygen impurities will seriously affect the performance of polymerization catalysts and synthetic materials. Usually, the trace oxygen content in ethylene and propylene is required to be less than 1ppm in the polymerization process. In the petrochemical industry, the advanced catalytic cracking process replaces steam cracking to increase the production of ethylene and propylene. It is generally necessary to deoxidize the cracked gas before the ethylene and propylene separation unit. The cracked gas contains high content of hydrogen, olefins, and less than 0.1% oxygen. Therefore, it is necessary to develop a deoxygenation catalyst that can me...
Claims
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Application Information
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