A hydrocracking method for increasing product liquid yield
A technology for hydrocracking and products, which is applied in hydrotreating process, petroleum industry, processing hydrocarbon oil, etc. It can solve the problem that light components cannot be exported out of the reactor in time, reduce the amount of hydrocracking liquid, and gasify the hydrocracking reactor. It can reduce the secondary or multiple cracking reactions, increase the conversion depth, and improve the yield of liquid products.
Active Publication Date: 2016-08-17
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
[0007] The gasification rate in the hydrocracking reactor is relatively high, especially in the lower catalyst bed of the cracking reactor, many light components that are cracked once cannot be exported to the reactor in time, and undergo secondary or multiple cracking to generate C 1 ~C 4 products, reducing the hydrocracking liquid yield
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Embodiment 1
[0030] One-stage serial one-pass process flow is adopted, two catalyst beds are arranged in the hydrocracking reactor, and a gas phase extraction pipeline is arranged between the catalyst beds. The properties of raw materials are shown in Table 1, and the catalysts, process conditions and results are shown in Table 2. Catalyst FF-26 is a commercial hydrorefining catalyst developed and produced by Fushun Petrochemical Research Institute, and FC-24 is a commercial hydrocracking catalyst developed and produced by Fushun Petrochemical Research Institute.
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Abstract
The invention provides a hydrocracking method increasing liquid yield of products. A gas-phase lead-out pipeline is disposed in a catalyst bed layer of a hydrocracking reactor. A gas-phase material flow in a reactor is leaded-out to a high-pressure separator through the gas-phase lead-out pipeline in the catalyst bed layer, while a liquid phase is counter-current contacted with hydrogen fed from the bottom of the reactor through a lower catalyst bed layer to perform a hydrocracking reaction. The hydrocracked gas-phase light fraction is directly fed into the high-pressure separator so that secondary or multiple cracking reactions are reduced. The hydrocracking method can increase the liquid yield of the products, can reduce the consumption of hydrogen and can prolong the service life of a catalyst.
Description
technical field [0001] The invention relates to a hydrocracking method for increasing product liquid yield, which belongs to the field of petrochemical industry. Background technique [0002] Hydrocracking is one of the main processes for the deep processing of heavy distillates. It is not only an important means for the production of light oil products in the oil refining industry, but also has become a key technology for petrochemical enterprises, playing an irreplaceable role in other processes. [0003] C in hydrocracking products 1 ~C 4 The economic value of the product is low and the hydrogen consumption is large, so the technicians will try to reduce the gas yield and increase the liquid yield on the premise of ensuring stable operation and product quality. [0004] The gas yield of the hydrocracking process is usually 4% to 6% (based on the quality of raw oil). Depending on the nature of raw materials, the desired target product and process conditions, the gas yie...
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IPC IPC(8): C10G65/12
CPCC10G65/12
Inventor 王喜彬郭蓉曾榕辉蒋立敬
Owner CHINA PETROLEUM & CHEM CORP
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