Treatment system and treatment method for improving hydrogen partial pressure of hydrogenation device
A technology for processing systems and hydrogenation devices, which is applied in separation methods, treatment with hydrogen-generating compounds, and hydrocarbon oil treatment, and can solve problems such as rapid aging of devices and high energy consumption
Active Publication Date: 2020-07-07
CHINA PETROLEUM & CHEM CORP +1
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[0005] Patent CN103421566A provides a method for natural gas desulfurization and recovery of elemental sulfur, which is characterized by the use of hollow fiber membrane modules as the contact interface between solvent and natural gas, which is still essentially a method for ammonia solvent to absorb acid gas. The main problems it faces come from Higher energy consumption required for solvent regeneration, and rapid unit aging due to high membrane wear rates
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Embodiment 1
[0048] In this example, the hydrogenation system uses residual oil as raw material, and the properties of the raw material are shown in Table 1. The reaction conditions of the hydrogenation system are as follows: the reaction temperature is 400°C, the operating pressure is 15MPa, and the space velocity is 0.3h -1 , the volume ratio of hydrogen to oil is 300, and the hydrogenation system cancels the existing circulating hydrogen system. The hydrogen production system adopts the hydrogen production process of natural gas steam reforming. The properties of the natural gas raw material are shown in Table 1; %Pd, 0.9wt%Ir, 0.9wt%Pt, the catalyst carrier is γ alumina), the reforming reaction temperature is 926~1012℃, and the gas hourly space velocity is 40000h -1 ; Water gas shift reaction temperature is 454 ℃. The reaction results are shown in Table 1.
[0049] In this example, polyimide (PI) was used as the hydrogen separation membrane material, polyethylene oxide block polymer...
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The invention discloses a treatment system and a treatment method for improving hydrogen partial pressure of a hydrogenation device. The treatment system comprises a hydrogenation system, a hydrogen production system and a membrane separation gas comprehensive treatment system; the hydrogenation system is used for receiving hydrogen and raw oil for hydrogenation reaction; the reaction outflow is separated to obtain high separation gas, low separation gas, stripping gas and hydrogenated product oil; the hydrogen production system is used for receiving water vapor and purifying hydrogen production raw material gas for reforming hydrogen production reaction; a hydrogen crude product is obtained after the reaction; and the membrane separation gas comprehensive treatment system is used for receiving the hydrogen production raw material gas, the hydrogen crude product from the hydrogen production system and the high-pressure separation gas, the low-pressure separation gas and the stripping gas which are separated from the hydrogenation system; finally, treatment is carried out to obtain purified hydrogen production raw material gas, carbon dioxide, hydrogen sulfide, hydrogen, fuel gas and light hydrocarbon. According to the treatment system and method, the hydrogen partial pressure of the hydrogenation device can be increased, and the operation cost of the hydrogenation device is reduced.
Description
technical field [0001] The invention belongs to the field of oil refining and chemical industry, and in particular relates to a treatment system and method for increasing the partial pressure of hydrogen in a hydrogenation unit. Background technique [0002] With the deepening of crude oil and the increasingly stringent requirements for environmental protection of oil products, refineries generally rely on hydrogenation technology to process gasoline, diesel, distillate oil and residual oil, etc., in order to increase the yield of light oil and optimize products The purpose of molecular structure, reducing the sulfur content of oil products, and increasing the added value of products. The hydrogenation unit has a large scale and complex process, and various gases are produced by-products in the process, such as hydrogen sulfide and ammonia produced by depurification, and light hydrocarbons and liquefied gas produced by hydrocracking. These gases with complex composition, va...
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IPC IPC(8): C10G49/00C10G49/18C10G49/22C10G49/26B01D53/22C01B3/02
CPCB01D53/226B01D53/228B01D2256/16B01D2257/304B01D2257/504B01D2257/702C01B3/02C10G49/00C10G49/18C10G49/22C10G49/26Y02P20/151Y02C20/40
Inventor 陈博孟兆会葛海龙杨涛蒋立敬
Owner CHINA PETROLEUM & CHEM CORP
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