Catalyst for hydrodechlorination of high chlorine-containing oil products and preparation method thereof
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A technology for catalysts and oil products, applied in the field of catalysts and their preparation, can solve the problems of harsh preparation conditions and high price, and achieve the effects of simple preparation process, high hydrodechlorination performance, and increased specific surface area
Active Publication Date: 2016-03-02
WUHAN KELIN FINE CHEM
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Although the reaction conditions of the above-mentioned renewable adsorbent and reducing agent are mild, the price is relatively expensive and the preparation conditions are harsh.
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Embodiment 1
[0020] Take 115g of pseudo-boehmite, 10g of Hβ (Si / Al is 50) powder, 30g of MgAl2O4 powder, add 4.65g of scallop powder, 7.7g of phosphoric acid, 2% nitric acid aqueous solution, mix evenly, extrude into strips, and put them in an oven at 120 ℃ drying for 6h, and calcining in a muffle furnace at 650℃ for 4h to obtain a composite oxide support, in which P 2 o 5 The content is 4%, molecular sieve, MgAl 2 o 4 、Al 2 o 3 The mass ratio of is 1:3:8, which is the carrier A.
Embodiment 2
[0022] Take 115g of pseudo-boehmite, 20g of HY (Si / Al is 30) powder, MgAl 2 o 4 20g powder, add 4.65g safflower powder, 5.8g phosphoric acid, 2% nitric acid aqueous solution, mix evenly, extrude into strips, dry in an oven at 120°C for 6h, and roast in a muffle furnace at 600°C for 5h to obtain a composite oxide carrier , where P 2 o 5 The content is 3%, molecular sieve, MgAl 2 o 4 、Al 2 o 3 The mass ratio of 1:1:4 is carrier B.
Embodiment 3
[0024] Take 115g of pseudo-boehmite, 25g of HZSM-5 (Si / Al is 5) powder, MgAl 2 o 4 25g powder, add 4.95g scallop powder, 5.77g diammonium hydrogen phosphate, 2% nitric acid aqueous solution, mix evenly, extrude into strips, dry in an oven at 120°C for 6h, and roast in a muffle furnace at 550°C for 6h to obtain a composite oxide carrier, where P 2 o 5 The content is 2%, molecular sieve, MgAl 2 o 4 、Al 2 o 3 The mass ratio of 2.5:2.5:8 is carrier C.
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Abstract
The invention relates to high-chlorine-content oil hydrogenation dechloridation catalyst and a preparation method thereof. The method comprises the steps of first preparing a molecule sieve-MgAl2O4-Al2O3 composite carrier containing an assistant P, impregnating the carrier with the water-soluble compound of an active component Ni or Co and Mo, W and the assistant Ce, drying and roasting the carrier, and preparing the hydrogenation dechloridation catalyst. The content of each component of the catalyst is as follows in percentage by weight: 2 to 5 percent of NiO or CoO, 5 to 10 percent of MoO3, 4 to 10 percent of WO3, 2 to 4 percent of assistant P2O5, 1 to 2 percent of CeO2, and the balance of composite carrier. The catalyst is good in activity and stability, the organic chloride in the oil can be removed under a mild condition, and the removing rate is more than 99 percent.
Description
technical field [0001] The invention relates to a catalyst for removing organic chlorides in oil products such as high chlorine-containing naphtha or diesel oil and a preparation method thereof. It belongs to the field of oil refining. Background technique [0002] Generally, the chloride content in crude oil is relatively low, so hydrodechlorination is rarely considered in petroleum refining technology. However, in the later stages of oilfield exploitation, in order to increase the output of oilfields, many oilfields use some additives containing organic chlorides to increase oil recovery, so that the chloride content in crude oil increases, and this part of chlorine is mostly in crude oil It is concentrated in the naphtha fraction, which increases the chlorine content in naphtha. Chlorides in naphtha are mainly chlorinated alkanes, such as chloroform, dichloroethane, trichloroethane, etc., and some refineries The chlorine content in naphtha is as high as 2400ppm. The cu...
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