A kind of regeneration system and regeneration method of cracking C5 separation device solvent
A separation device and regeneration system technology, applied in the separation/purification, fractionation, flash evaporation of carboxylic acid amides, etc., can solve the problems of high operating cost and labor intensity, poor heat transfer effect of solvent regeneration kettle, etc. Possibilities, increased labor intensity and occupational hazards, effects of reducing emissions
Active Publication Date: 2015-08-12
CHINA PETROCHEMICAL CORP +1
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Problems solved by technology
[0009] In order to solve the problems of poor heat transfer effect, frequent switching and cleaning, high operating cost and labor intensity in the solvent regeneration kettle in the prior art
Method used
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Embodiment
[0047] Such as figure 2 Shown is a cyclic solvent regeneration system for a cracked carbon five separation device.
[0048] Including: a crude solvent tank 7, a solvent refining tower 9 and a reflux tank 12. The bottom outlet of the crude solvent tank 7 is connected to a solvent refining tower 9, and the top of the solvent refining tower 9 is connected to a reflux tank 12 and then returned to the solvent refining tower,
[0049] A flash tank 3 and a reboiler 2 are arranged in front of the crude solvent tank 7, and a stirrer 4 is arranged in the flash tank; the reboiler 2 is connected to the flash tank 3, and the top of the flash tank 3 is connected to the crude solvent tank 7. The bottom of flash tank 3 is connected to waste residue tank 5.
[0050] A solvent oil pipeline is connected to the top of the flash tank.
[0051] A heating coil is provided outside the flash tank 3.
[0052] The bottom of the reboiler 2 is higher than the feed inlet of the flash tank.
[0053] a) The solvent ...
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The invention discloses a regeneration system and a regeneration method for the solvent of a cracked C5 separation device. The system comprises a crude solvent tank, a solvent refining tower and a reflux tank, wherein an outlet in the bottom of the crude solvent tank is connected with the solvent refining tower, the top of the solvent refining tower is connected with the reflux tank and then returns to the solvent refining tower, and a flash tank and a reboiler are arranged in front of the crude solvent tank; the reboiler is connected with the flash tank, the top of the flash tank is connected with the crude solvent tank, and the bottom of the flash tank is connected with a waste residue tank; and a solvent oil pipeline is arranged at the top of the flash tank. The method comprises the following steps that: a circulating solvent enters in the flash tank after being heated by the reboiler, materials extracted from the top of the flash tank enter in the solvent refining tower to be refined after being condensed, and a pure solvent is obtained in the tower kettle of the solvent refining tower; and a material flow at the bottom of the flash tank is intermittently extracted to the waste residue tank. According to the system and the method disclosed by the invention, the solvent can be separated from tar better, meanwhile, the possibility of tar accumulation is reduced, the economic benefits of the device are improved, and the operation strength is reduced.
Description
Technical field [0001] The present invention relates to the field of carbon five, and more specifically, to a regeneration system and a regeneration method of a solvent in a cracking carbon five separation device. Background technique [0002] In the process of ethylene production from petroleum cracking, a considerable amount of carbon five fraction is produced by-product, which is rich in diene such as isoprene, piperylene and cyclopentadiene. These diolefins are chemically active and are important chemical raw materials. The difference in the raw materials, cracking depth and separation degree of the cracking of petroleum hydrocarbons, the content of diolefins in the C5 fraction is different, but the total amount is in the middle of 40-60%. Therefore, the separation and utilization of C5 fractions has far-reaching significance for improving the economic benefits of ethylene plants and comprehensive utilization of petroleum resources. [0003] The pyrolysis C5 fraction is compo...
Claims
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IPC IPC(8): B01D3/06B01D3/14C07C233/03C07C231/24
Inventor 马立国高耸王鑫泉利梅
Owner CHINA PETROCHEMICAL CORP