Vulcanization startup method of hydrocracking device

A technology of hydrocracking and hydrogen sulfide, which is applied in the fields of hydrotreating process, petroleum industry, and hydrocarbon oil treatment, etc. It can solve the problem that the heat of reaction is not fully utilized, so as to reduce the duration of sulfidation, reduce energy consumption, and reduce loss Effect

Active Publication Date: 2013-04-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] There are some shortcomings in the above patents, that is, the nitrogen content of the starting oil injected during the vulcanization process must be strictly controlled and the heat of reaction has not been fully utilized.

Method used

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  • Vulcanization startup method of hydrocracking device

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Embodiment 1

[0038] use figure 1 In the process flow shown, the catalysts used are FF-46 hydrocracking pre-refining catalyst and FC-32 hydrocracking catalyst developed by Fushun Petrochemical Research Institute. Catalyst properties are listed in Table 1. After the airtightness is completed, the system pressure is adjusted to 12.0MPa, and the circulating hydrogen compressor is started. The hydrogen circulation route is the first reverse (refining reactor)-high fractionation-second reverse (cracking reactor)-first reverse. When the inlet temperature of the first reverse bed rises to 120°C, the process oil starts to enter. The properties of the process oil are shown in Table 2. The start-up oil circulation circuit is one reverse-high score-one reverse. Volumetric space velocity 1.0h -1 , Hydrogen oil ratio 700:1. After the catalyst is fully wetted, raise the bed inlet temperature to 150°C and start injecting C 2 S. Slowly raise the temperature of the first and second reactor beds, and a...

Embodiment 2

[0041] use figure 1 Shown technological process, catalyzer is with embodiment 1. After the airtightness is completed, the system pressure is adjusted to 12.0MPa, and the circulating hydrogen compressor is started. The hydrogen circulation route is the first reverse (refining reactor)-high fractionation-second reverse (cracking reactor)-first reverse. When the inlet temperature of the first reverse bed rises to 120°C, the process oil starts to enter. The properties of the process oil are shown in Table 2. The start-up oil circulation circuit is one reverse-high score-one reverse. Volumetric space velocity 1.0h -1 , Hydrogen oil ratio 700:1. After the catalyst is fully wetted, raise the bed inlet temperature to 150°C and start injecting C 2 S. Raise the temperature of the first and second reaction beds slowly. After the hydrogen sulfide penetrates the entire bed, raise the inlet temperature of the first reaction bed to 230°C, and keep the constant temperature vulcanization ...

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Abstract

The invention discloses a vulcanization startup method of a hydrocracking device. The method comprises: injecting startup vulcanization oil and a vulcanizing agent into a refining reactor, and conducting vulcanization on a refining catalyst in a wet process; subjecting the refining reactor effluent to gas-liquid separation to obtain a hydrogen sulfide-containing gas, carrying out heat exchange on the gas, then passing it through a hydrocracking reactor, performing vulcanization on a cracking catalyst in a dry process, and cycling the obtained refined oil back into a startup oil buffer tank; and at the end of a low temperature vulcanization constant temperature section, supplementing a certain proportion of inferior diesel oil to the vulcanization startup oil, and making use of the temperature rise generated by heat release of an inferior diesel oil hydrogenation reaction to assist a heating furnace to perform temperature raising operations till the end of vulcanization. The method provided in the invention can produce a part of hydrofined products on the basis of guaranteeing the vulcanization effect, and also can reduce the heating furnace energy consumption and the vulcanizing agent dosage.

Description

technical field [0001] The invention relates to a sulfuration start-up method of a hydrocracking unit. Background technique [0002] In recent years, the heavy and inferior quality of crude oil has become increasingly serious around the world, environmental protection regulations have become increasingly stringent, and the demand for light, clean fuels has continued to increase. Hydrocracking technology is an effective means to lighten heavy oil products and produce clean fuel oil, and is a key technology to solve the above contradictions. The hydrogenation catalysts currently produced in the domestic industry are basically oxidation-type. New catalysts or regenerated catalysts produced in industry contain active metal components (Mo, Ni, Co, W) in the oxidation state (MoO 3 , NiO, CoO, WO 3 ) exists in the form of Basic research and industrial application practice have shown that most of the active metal components of hydrogenation catalysts have higher hydrogenation ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/00
Inventor 孙士可刘继华刘涛黄新露张学辉彭冲
Owner CHINA PETROLEUM & CHEM CORP
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