Anti-coking oil collecting tank for passing vaporized oil

A technology of super-vaporized oil and oil collecting tank, which is applied in fractionation, vacuum distillation, etc., can solve the problems of coking of super-vaporized oil in the vacuum tower, and achieve the effects of solving high-temperature coking, reducing residence time and improving collection speed.

CN104623923AActive Publication Date: 2015-05-20PETROCHINA CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-05-20

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Abstract

The invention relates to an anti-coking oil collecting tank for passing vaporized oil. Each liquid collecting tank is composed of one or more members with a square tank structure; one end of the liquid collecting tank close to the tower wall is overlapped on a support ring, the other end is overlapped on the edge of a liquid collecting channel, the end overlapped on the support ring is higher than the end overlapped on the liquid collecting channel, and thus the liquid collecting tank is inclined to the liquid collecting channel. The liquid collecting tank in the middle part uplifts, the two ends of the middle liquid collecting tank are respectively overlapped on two neighbored liquid collecting channels, and the middle liquid collecting tank is inclined to the second liquid colleting channel. A liquid baffle plate is in a square tank shape or a triangular tank shape and is fixed above a gap between the liquid collecting tanks through a rib plate or a support plate so as to form a gas channel. The liquid collecting channel has a square tank shape structure, the oil collecting tank comprises one or more liquid collecting channels, one end of the liquid collecting channel is overlapped on a withdrawal hopper, and the bottom plate is inclined to the withdrawal hopper. The number of withdrawal hopper is one or two, and the bottom plate of the withdrawal hopper is inclined to the withdrawal opening. The provided oil collecting tank can reduce the stay time of liquid in the oil collecting tank, reduces the flow resistance, prevents the happening of coking, and guarantees the normal operation of towers at a high temperature.
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Description

technical field

[0001] The invention relates to an internal part of a chemical tower, in particular to an over-vaporized oil collecting tank of a decompression tower used for liquid collection and gas distribution in a chemical tower. Background technique

[0002] The basic structure of the traditional disc-type oil collection tank is that there are multiple circular or rectangular air risers on the bottom plate, and a liquid baffle is set above the air riser. The liquid from the top of the oil collection tank is collected to form a certain liquid level on the bottom plate. The liquid is pumped out through the suction port; the gas rises through the gas riser to obtain a certain distribution. Under this structure, the residence time of the liquid is long, and the fluidity is poor, and the risk of coking is great when the operating temperature is high.

[0003] With the continuous development of atmospheric and vacuum technology, the column internals technology suitable for ...

Examples

Embodiment Construction

[0015] An anti-coking overvaporized oil collection tank according to the present invention is composed of a liquid collection tank 1, a liquid baffle plate 2, a liquid collection channel 3 and an extraction bucket 4; the liquid collection tank is composed of one or more components of a square groove structure One end of the liquid collecting tank close to the tower wall on both sides is lapped on the support ring, and the other end is lapped on the edge of the liquid collecting channel, forming a high lap at the end of the supporting ring and a low lap at the edge of the liquid collecting channel. The liquid collection channel is inclined; the middle part of the liquid collection channel in the middle is raised upwards, and the two ends are respectively lapped on the two adjacent liquid collection channels and inclined towards the two liquid collection channels; the liquid baffle is square or triangular The trough-shaped structure is fixed above the gap between the collecting t...