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Porous propping agent combination and preparation method thereof

A technology of proppant and composition, which is applied in the field of porous proppant composition and its preparation in the hydroprocessing process, can solve the problems of large temperature rise of the catalyst bed and difficult control of the catalyst activation process, and achieve shortened start-up time, suitable Suitable for large-scale use and low production cost

Active Publication Date: 2009-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The heat released during the activation process of the external presulfurized catalyst mainly comes from two parts, one part of the heat is from the reaction of sulfidation agent and hydrogen to form hydrogen sulfide, and the other part of the heat is from the reaction of active metal oxides and hydrogen sulfide to form metal sulfide The heat will cause a large temperature rise in the catalyst bed, which makes the activation process of the catalyst more difficult to control

Method used

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  • Porous propping agent combination and preparation method thereof

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Effect test

Embodiment 1

[0037] The preparation process of porous proppant composition CA1 is as follows:

[0038] The molten elemental sulfur is introduced into the alumina porous proppant SA1, and the amount of elemental sulfur introduced is 180% of the weight of the porous proppant. Then tetrabutylthiuram disulfide (TBTD) is mixed with heavy diesel oil, and this mixture is introduced in the catalyst containing elemental sulfur by impregnation method, and the TBTD consumption is 3% of porous proppant weight, and heavy diesel oil consumption is porous proppant 20% by weight. Finally, the porous proppant composition CA1 was obtained by treating at 160° C. for 5 hours in a normal-pressure, non-flowing air atmosphere.

Embodiment 2

[0040] The preparation process of porous proppant composition CA2 is as follows:

[0041] Disperse tetramethylthiuram disulfide (TMTD) in an organic solvent (a mixture of peanut oil and heavy diesel oil at a weight ratio of 4:1), disperse elemental sulfur in the above mixture, and introduce the mixture into the porous proppant SA2 by impregnation Among them, the introduction amount of elemental sulfur is 60% of the weight of the porous proppant, the amount of TMTD is 2% of the weight of the porous proppant, and the amount of organic solvent is 15% of the weight of the porous proppant. Finally, the porous proppant composition CA2 was obtained by treating at 160° C. for 5 hours in a normal-pressure, non-flowing air atmosphere.

Embodiment 3

[0043] The preparation process of porous proppant composition CA3 is as follows:

[0044] The molten elemental sulfur is introduced into the alumina porous proppant SA3 by impregnation, and the amount of elemental sulfur introduced is 270% of the weight of the porous proppant. Then tetramethylthiuram disulfide (TMTD) is dissolved in benzene, and the mixture is introduced into the catalyst containing elemental sulfur by impregnation method, and the amount of TMTD is 5% of the weight of the porous proppant. Finally, the porous proppant composition CA3 was obtained by treating at 120° C. for 5 hours under normal pressure, in an atmosphere with a volume ratio of water vapor and air of 5:1.

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Abstract

The invention discloses a porous propping agent combination and a preparation method thereof; the propping combination comprises a porous propping agent, sulfur which occupies 20-300 percent of the weight of the porous propping agent, organic solvent which occupies 0-50 percent of the weight of the porous propping agent and auxiliary agent which occupies 0-25.0 percent of the weight of the porous propping agent. The propping agent combination is suitable for hydrogenation disposal process. The porous propping agent combination provides vulcanizing agent for the oxidated hydrogenation catalyst, shortens the commencement time of the device, improves the production efficiency, overcomes the defects of pre-vulcanization in the device, and can solve the problem of concentrative heat discharge of pre-vulcanized catalyst outside the device. Furthermore, the sulfur introduced in the porous propping agent is mainly arranged in holes of the propping agent, increases no volume of the propping agent, thus affecting no disposal quantity of the device further.

Description

technical field [0001] The invention relates to a porous proppant composition and a preparation method thereof, in particular to a porous proppant composition used in a hydrogenation process and a preparation method thereof. Background technique [0002] Hydrogenation catalysts used in industry are generally supported by refractory oxides such as alumina, silica-alumina, and molecular sieves, and one of Group VIB metals (such as molybdenum, tungsten) and Group VIII metals (such as cobalt, nickel) One or several are active metal components, and these active metal components are dispersed on the carrier in an oxidized state, and during the hydrogenation reaction, the active metal components of the catalyst are in a sulfide state (the metal exists in the form of sulfide: co 9 S 8 、MoS 2 、Ni 3 S 2 、WS 2 etc.) have higher activity and stability. Therefore, presulfidation is required to convert the active metal from an oxidized state to a sulfided state before the catalyst ...

Claims

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Application Information

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IPC IPC(8): B01J37/20B01J32/00
Inventor 李永泰孟祥兰王志武王欣高鹏
Owner CHINA PETROLEUM & CHEM CORP
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