Hydrogen-rich heavy oil raw material production device

Abstract

The utility model relates to the technical field of heavy oil hydrogenation, in particular to a hydrogen-rich heavy oil raw material production device. Comprising an oil slurry pipe and a catalyst feeding pipe, the oil slurry pipe and the catalyst feeding pipe are respectively connected with a mixing tank, the mixing tank and a high-pressure hydrogen pipe are jointly connected with one end of a feeding pipe through a mixture conveying pipe, the other end of the feeding pipe is connected with a feeding port of a suspended bed reactor, and a discharging port of the suspended bed reactor is connected with a top inlet of a cold high-pressure separator through a condenser. A cold high-pressure separator bottom outlet is connected with a cold low-pressure separator top inlet, and a cold low-pressure separator bottom solid outlet is connected with a catalyst feeding pipe through a catalyst circulating pipe. Catalytic cracking oil slurry and catalytic cracking oil slurry are used as raw materials, a hydrogenated aromatic hydrocarbon hydrogen-rich product is obtained through a suspended bed hydrogenation reaction, the hydrogenated aromatic hydrocarbon hydrogen-rich product can be used as a hydrogen supply raw material for production processes such as kerosene co-processing and heavy oil lightening, and a catalyst can be recycled, so that the cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heavy oil hydrogenation technical field, concretely relates to hydrogen-rich heavy oil raw material production device. BACKGROUND

[0002] The coal oil co-refining, heavy oil lightening and other technologies are important technical means to solve the insufficient oil supply rate in China. The technical features are that, through hydrogenation and free radical thermal cracking reaction, light oil products are obtained while avoiding a large amount of coking in the reactor. The hydrogen free radicals consumed in hydrogenation can be generated by the reaction of catalysts (such as molybdenum disulfide, tungsten disulfide, etc.) with hydrogen, or can be provided by saturated naphthenes in hydrogenated aromatic hydrocarbons. In the coal oil co-refining, heavy oil lightening and other reaction processes, the catalysts are one-time through, and the catalyst cost is high. CONTENT OF THE UTILITY MODEL

[0003] The technical problem to be solved by the utility model is to provide a hydrogen-rich heavy oil raw material production device, which uses catalytic cracking slurry and catalytic cracking slurry as raw materials, obtains hydrogenated aromatic hydrocarbon hydrogen-rich products through a suspended bed hydrogenation reaction, can be used as hydrogen supply raw materials for coal oil co-refining, heavy oil lightening and other production processes, and the catalysts can be recycled, saving costs.

[0004] The hydrogen-rich heavy oil raw material production device, which comprises an oil slurry pipe and a catalyst feeding pipe, and the oil slurry pipe and the catalyst feeding pipe are respectively connected to a mixing tank, the mixing tank is connected to one end of a feed pipe through a mixed material conveying pipe and a high-pressure hydrogen pipe, the other end of the feed pipe is connected to a feed inlet of a suspended bed reactor, a condenser is connected to a top inlet of a cold high-efficiency separator through a discharge outlet of the suspended bed reactor, a bottom outlet of the cold high-efficiency separator is connected to a top inlet of a cold low-efficiency separator, and a catalyst circulation pipe is connected to the catalyst feeding pipe through a solid outlet of the cold low-efficiency separator.

[0005] Preferably, the mixing tank is provided with a stirring device.

[0006] Preferably, the mixing tank is provided with a jacket.

[0007] Preferably, a tail gas pipe is connected to a top gas outlet of the cold high-efficiency separator.

[0008] Preferably, a hydrogen-rich product pipe is connected to a liquid outlet of the cold low-efficiency separator.

[0009] Preferably, a material discharging pump is arranged on the mixed material conveying pipe.

[0010] Valves can be arranged on the pipes according to the control needs, and the opening and closing of the valves can conveniently control the on-off of the materials in the corresponding pipes and adjust the flow of the materials.

[0011] The utility model principle: catalytic cracking oil slurry or catalytic cracking oil slurry is catalytic cracking device outside fling tail oil, and its composition features are containing a large number of condensed ring aromatics (mostly 3 to 5 rings) with short side chain. In the suspended bed hydrocracking system, by controlling reaction temperature and hydrogen pressure, the condensed ring aromatics can be partially hydrogenated to obtain hydrogenated aromatics. A large number of studies have shown that the naphthenic ring in hydrogenated aromatics has good hydrogen transfer ability, which can play the role of hydrodesulfurization, hydrodenitrogenation and hydrogenation inhibition in kerosene co-refining and heavy oil lightening, and can replace hydrogenation catalyst. Therefore, the utility model device can use catalytic cracking oil slurry or catalytic cracking oil slurry as raw material, control reaction temperature and reaction pressure under the action of hydrogenation catalyst, and make oil slurry condensed ring aromatics partially hydrogenated to obtain hydrogen-rich products, which are used as hydrogen supply raw materials for kerosene co-refining, heavy oil lightening and other production processes, thereby reducing the amount of catalyst used in subsequent light oil production and reducing production cost.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The utility model can use catalytic cracking oil slurry or catalytic cracking oil slurry and other polycyclic aromatic hydrocarbons as raw material, control reaction temperature and reaction pressure under the action of hydrogenation catalyst, and make oil slurry condensed ring aromatics partially hydrogenated to obtain hydrogen-rich products, which are used as hydrogen supply raw materials for kerosene co-refining, heavy oil lightening and other production processes;

[0014] During the catalytic hydrogenation reaction of catalytic cracking oil slurry and catalytic cracking oil slurry, almost no thermal shrinkage and coke formation occurs, so that the hydrogenation catalyst remains active after reaction, and can be recycled after separation, thereby saving cost. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the hydrogen-rich heavy oil raw material production device structure schematic view of the utility model;

[0016] In the drawing: 1, oil slurry pipe; 2, catalyst feeding pipe; 3, mixing tank; 4, high-pressure hydrogen pipe; 5, feed pipe; 6, suspended bed reactor; 7, condenser; 8, cold high separation; 9, cold low separation; 10, catalyst circulation pipe; 11, stirring device; 12, tail gas pipe; 13, hydrogen-rich product pipe; 14, material pumping pump; 15, mixed material conveying pipe. DETAILED DESCRIPTION

[0017] The utility model will be described clearly and completely in combination with the drawings.

[0018] For example, Figure 1As shown, the hydrogen-rich heavy oil raw material production device comprises an oil slurry pipe 1 and a catalyst supply pipe 2, the oil slurry pipe 1 and the catalyst supply pipe 2 are respectively connected to a mixing tank 3, the mixing tank 3 is connected to one end of a feed pipe 5 through a mixed material conveying pipe 15 and a high-pressure hydrogen pipe 4, the other end of the feed pipe 5 is connected to a feed inlet of a slurry bed reactor 6, a feed outlet of the slurry bed reactor 6 is connected to a top inlet of a cold high-speed separator 8 through a condenser 7, a bottom outlet of the cold high-speed separator 8 is connected to a top inlet of a cold low-speed separator 9, and a solid outlet at the bottom of the cold low-speed separator 9 is connected to the catalyst supply pipe 2 through a catalyst circulation pipe 10.

[0019] The mixing tank 3 is provided with a stirring device 11.

[0020] The mixing tank 3 is provided with a jacket.

[0021] The top gas outlet of the cold high-speed separator 8 is connected to a tail gas pipe 12.

[0022] The liquid outlet of the cold low-speed separator 9 is connected to a hydrogen-rich product pipe 13.

[0023] The mixed material conveying pipe 15 is provided with a material pumping device 14.

[0024] The working process is as follows: the catalytic cracking oil slurry or catalytic cracking oil slurry (i.e. heavy oil) in the oil slurry pipe 1 and the hydrogenation catalyst are mixed and stirred uniformly in the mixing tank 3 through the stirring device 11, so that the hydrogenation catalyst is uniformly dispersed in the heavy oil to obtain mixed material, the mixed material is mixed with hydrogen in the feed pipe 5 through the mixed material conveying pipe 15 and the hydrogen in the high-pressure hydrogen pipe 4, and then enters the slurry bed reactor 6, the primary product obtained after the heavy oil is reacted in the slurry bed reactor 6 is condensed through the condenser 7 and then enters the cold high-speed separator 8, the product at the top of the cold high-speed separator 8 is treated as tail gas and enters the tail gas pipe 12, the product at the bottom of the cold high-speed separator 8 is subjected to pressure reduction and then enters the cold low-speed separator 9, the solid-liquid separation is carried out in the cold low-speed separator 9, the solid hydrogenation catalyst is returned to the mixing tank 3 through the catalyst circulation pipe 10 for recycling, and the liquid obtained in the cold low-speed separator 9 is the hydrogen-rich product and enters the hydrogen-rich product pipe 13, which can be used as a hydrogen supply raw material for subsequent production processes such as kerosene co-refining and heavy oil lightening.

[0025] In the process of recycling the hydrogenation catalyst, if the hydrogenation catalyst is lost, fresh hydrogenation catalyst can be supplemented through the catalyst supply pipe 2.

Claims

1. A device for producing hydrogen-rich heavy oil feedstock, characterized in that, The invention relates to a slurry oil pipe (1) and a catalyst supply pipe (2) connected to a mixing tank (3), the mixing tank (3) is connected to a high-pressure hydrogen pipe (4) through a mixed material delivery pipe (15) and is connected to one end of a feed pipe (5), the other end of the feed pipe (5) is connected to a feed inlet of a slurry bed reactor (6), a condenser (7) is connected to a top inlet of a cold high-speed separator (8) through a material outlet of the slurry bed reactor (6), a bottom outlet of the cold high-speed separator (8) is connected to a top inlet of a cold low-speed separator (9), and a catalyst circulation pipe (10) is connected to the catalyst supply pipe (2) through a bottom solid outlet of the cold low-speed separator (9).

2. The hydrogen-rich heavy oil feedstock production apparatus according to claim 1, characterized by, A stirring device (11) is arranged in the mixing tank (3).

3. The hydrogen-rich heavy oil feedstock production apparatus according to claim 1, characterized by, A jacket is arranged outside the mixing tank (3).

4. The hydrogen-rich heavy oil feedstock production apparatus according to claim 1, characterized by, A tail gas pipe (12) is connected to a gas outlet at the top of the cold high-speed separator (8).

5. The hydrogen-rich heavy oil feedstock production apparatus according to claim 1, characterized by, A hydrogen-rich product pipe (13) is connected to a liquid outlet of the cold low-speed separator (9).

6. The hydrogen-rich heavy oil feedstock production apparatus according to claim 1, characterized by, A material discharging pump (14) is arranged on the mixed material delivery pipe (15).

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