Process for recovering heat energy of reaction product of hydrogenation device
A technology for reaction products and hydrogenation devices, which is applied in the petroleum industry, refined hydrocarbon oil, etc., can solve the problems of non-recovery of heat energy and high energy consumption of the device, and achieve the effect of fully recovering heat energy, reducing energy consumption of the device, and rationally using energy.
Inactive Publication Date: 2011-03-30
SHANDONG SUNWAY PETROCHEMICAL ENGINEERING CO LTD
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[0003] The traditional heat energy recovery process consists of the following steps in sequence: heating hydrogenation raw materials, heating reaction to generate oil, through the above steps, only the heat energy contained in the reaction product above 90°C is recovered, a large amount of heat energy cannot be recovered, and it enters the subsequent air-cooling and water-cooling processes, lead to higher power consumption of the device
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[0014] A process for recovering heat energy of a reaction product of a hydrogenation unit, specifically consisting of the following steps:
[0015] 1) Generation of low-pressure steam: the reaction product enters the low-pressure steam generator 1 to generate 1.0 MPa steam, recovers the heat energy of the reaction product, reduces the temperature of the reaction product, and the cooled reaction product enters the reaction product / raw material heat exchanger 2;
[0016] 2) Heating the raw material for hydrogenation: the reaction product enters the reaction product / raw material heat exchanger 2, and exchanges heat with the hydrogenation raw material. The reaction product enters the reaction product / generated oil heat exchanger 3;
[0017] 3) Heating reaction to generate oil: the reaction product enters the reaction product / generated oil heat exchanger 3, and exchanges heat with the generated oil. The reaction product enters the subsequent air cooling, water cooling and other pr...
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The invention discloses a process for recovering heat energy of a reaction product of a hydrogenation device, and belongs to the technical field of oil refining. The process is characterized by comprising the following steps in turn: 1) generating low pressure steam: generating steam of 1.0MPa by feeding the reaction product into a low pressure steam generator, recovering the heat energy of the reaction product, cooling the reaction product, and feeding the cooled reaction product into a reaction product / raw material heat exchanger; 2) heating the hydrogenation raw materials: feeding the reaction product into the reaction product / raw material heat exchanger, exchanging heat with the hydrogenation raw materials, feeding heated raw materials into a reactor feed furnace, recovering the heat energy of the reaction product, cooling the reaction product and feeding the cooled reaction product into a reaction product / generated oil heat exchanger; and 3) heating the oil generated by the reaction: feeding the reaction product into the reaction product / generated oil heat exchanger, exchanging heat with the generated oil, feeding the heated generated oil into a stripping tower for stripping, recovering the heat energy of the reaction product, cooling the reaction product and allowing the cooled reaction product to enter a subsequent air cooling and water cooling process. By the three steps, the heat energy contained by the reaction product of over 80 DEG C is basically recovered. Compared with the prior art, the process has the advantages that: the heat energy is fully recovered, the energy consumption of the device is obviously reduced and the process has prominent economic benefit.
Description
technical field [0001] The invention belongs to the technical field of oil refining, and in particular relates to a process for recovering heat energy of a reaction product of a hydrogenation unit. The invention is especially suitable for the hydrogenation unit of the oil refinery. Background technique [0002] The hydrogenation process is an important process for oil refineries to increase the yield of light oil and improve product quality. The hydrogenation reaction product needs to be cooled in the rear system until the circulating hydrogen separated from the reaction product reaches the feed temperature required by the circulating hydrogen compressor, so as to ensure that no light hydrocarbon gas enters the circulating hydrogen compressor system, and then in the circulating hydrogen When the temperature is lowered, condensate is produced and damages the compressor. Therefore, fully recovering the heat energy contained in the reaction product in the hydrogenation proces...
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IPC IPC(8): C10G45/00
Inventor 林彩虹马晓霞金珍荆举祥张伟姜俊晓徐华李学翔
Owner SHANDONG SUNWAY PETROCHEMICAL ENGINEERING CO LTD