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Omnipotent bed hydrogenation technology

A process, hydrogen technology, applied in the field of omnipotent bed processing) hydrogenation process, can solve the problems of increased device operation risk, complex mixing equipment, limited mixing uniformity, etc., achieve less air pollution and solid waste generation, and high resource utilization Efficiency, less air and less solid waste

Inactive Publication Date: 2017-08-18
CATECH TECH
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Problems solved by technology

These two technologies have also encountered restrictive problems in the application: in order to maintain the yield of light oil and the stability of product properties, the catalyst of the ebullating bed hydrogenation process must be continuously updated, so all ebullating bed devices need to be equipped with a catalyst loading and unloading system. Larger; the operation is complicated, which increases the cost of raw material processing; when the spent catalyst is unloaded, some light oil will be carried out, resulting in waste
The solid catalyst and raw oil are heterogeneous, and the mixing equipment is complex and the mixing uniformity is limited; the catalyst will wear key equipment such as pumps and valves during operation, shorten the operation period of the device, and may increase the risk of the operation of the device. When the catalyst leaves the device, it will carry some light oil, reduce light oil yield
Due to the limited activity of this catalyst, the reaction temperature and reaction pressure are often high, which increases the device investment and operating costs

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0033] In this example, the omnipotent bed hydrogenation process using an empty cylinder structure reactor is used to process vacuum residue. For the process flow, see figure 1 , the processing raw material 2 is vacuum residue, and the properties of vacuum residue are shown in Table 1. Catalyst 3 is a Mo-Ni oil-soluble catalyst, and the addition amount accounts for 0.08wt% of the feed amount of residue. / Catalyst mixing equipment 1 performs mixing, the mixing temperature is 200° C., and the mixing time is 90 minutes, so that the concentration of the catalyst in the reaction material reaches a uniform state. The system also includes a raw material oil delivery pump 4, a circulating hydrogen compressor 5, a residual oil heating furnace 7, a hydrogen heating furnace 8, and transports mixed raw materials and fresh hydrogen 6 according to the connection shown in the figure, the primary reactor 11 and the secondary reactor 11. The catalyst concentration in the stage reactor 12 is 1...

Embodiment 2

[0040] In this embodiment, the omnipotent bed hydrogenation process of the internal circulation structure reactor is used to process the vacuum residue, and a reverse circulation pump 23 and a secondary reverse circulation pump 24 are added to the reactor. The process flow chart is shown in figure 2 , the processing raw material properties are the same as in Example 1. The catalyst is a Mo-Ni oil-soluble catalyst, the addition amount is 0.08wt%, the catalyst is mixed with the raw material oil, the mixing temperature is 200°C, and the mixing time is 90 minutes, so that the concentration of the catalyst in the reaction material reaches a uniform state and keeps the reaction The concentration of the catalyst in the vessel is 1000-1200ppm, the reaction temperature is 370°C, the reaction pressure is 16MPa, and the space velocity is 0.5h -1 , the hydrogen-to-oil ratio is 650, the vulcanizing agent is liquid sulfur, and the addition amount is 0.5%. The method of vulcanization while ...

Embodiment 3

[0043] Example 3: An example of residual oil fluidized bed hydrogenation process (comparative example).

[0044] Adopt ebullated bed hydrogenation process to process the raw material of embodiment 2, the operating temperature of ebullated bed, pressure, space velocity, reactor ten-ring ratio are the same as embodiment 2, the catalyst is a solid high-efficiency catalyst, and the catalyst volume in the reactor accounts for 50% of the reaction space %. The reaction products are dry gas, liquefied petroleum gas, naphtha, kerosene, diesel oil and wax oil fractions, wherein the yield of dry gas is 2.35%, and the yield of liquefied gas is 2.62%. The properties of oil phase products are summarized in Table 4.

[0045] Table 4 Summary of oil phase properties

[0046] project data C, wt% 92.91 H, wt% 5.71 S, wt% 0.42 N, wt% 0.86 Carbon residue, wt% 15.84 Asphaltenes, wt% 4.93 Toluene insoluble matter, wt% 1.79 Simulated distill...

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Abstract

The invention provides an omnipotent bed hydrogenation technology. Raw materials comprise atmospheric pressure residual oil, vacuum residual oil, catalytic slurry oil, deoiled asphalt, coal tar or distillate oil, and can further comprise coal dust, firstly, the raw material oil and an oil soluble catalyst are mixed in a raw material / catalyst mixing system, the mixing temperature is 60-350 DEG C, and the mixing time is 20-200 minutes; the vulcanization process is completed in a reactor; the omnipotent bed is a cylindrical reactor excluding a fixed bed layer; the oil soluble catalyst is the combination of one or more of active components of Mo, Ni, Co, W, Fe. According to the omnipotent bed hydrogenation technology, firstly, the oil soluble catalyst and the raw material oil are mutually mixed (after an oil-coal joint hydrogenation technology, coal dust is added to prepare coal-oil slurry, and swelling is conducted), hydrogen is added, the temperature is raised, the pressure is raised, a reaction is conducted, separation is conducted, and fractional distillation is conducted. The omnipotent bed hydrogenation technology has the advantages of being high in raw material adaptability, high in light oil yield, less in atmospheric and solid waste and low in temperature and pressure.

Description

technical field [0001] The invention relates to an all-bed (All-Bed for oil (plus coal) processing) hydrogenation process, which belongs to the fields of oil refining chemical industry and coal chemical industry. Background technique [0002] Since the development of oil refining technology, a processing flow with catalytic cracking, coking and hydrogenation as the core has been formed. With the continuous reduction of conventional crude oil reserves, the trend of inferior crude oil is becoming more and more serious, and processing is becoming more and more difficult; traditional crude oil processing is mainly based on catalytic cracking and coking, and the air pollution in the process of these two processes is relatively serious. The yield of light oil is low. [0003] In this realistic environment, the hydrogenation technology of heavy oil and distillate oil is getting more and more attention. For the heavy oil hydrogenation process, ebullating bed and slurry bed (suspen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/08C10G47/02C10G49/04C10G67/02
CPCC10G45/08C10G47/02C10G49/04C10G67/02
Inventor 李苏安王坤朋邓清宇
Owner CATECH TECH
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