CN210302466U

CN210302466U - Fractionating tower bottom stirring device

Info

Publication number: CN210302466U
Application number: CN201920924698.4U
Authority: CN
Inventors: 张炳辰; 张高博; 蔡峥伟
Original assignee: SHANGHAI HUIDE ENERGY INTEGRATION TECHNOLOGY CO LTD
Current assignee: SHANGHAI HUIDE ENERGY INTEGRATION TECHNOLOGY CO LTD
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-04-14
Anticipated expiration: 2029-06-19

Abstract

The utility model relates to a fractionating tower bottom of tower agitating unit, including the fractionating tower, the stirring distributing device, material backflow conveyer pipe at bottom of steam conveying pipe and the tower, the stirring distributing device sets up inside the fractionating tower bottom of the tower, material backflow conveyer pipe at the bottom of tower and fractionating tower bottom of the tower discharging pipe intercommunication, still include tee bend mixer flow controller, two feed ends of tee bend mixer communicate with material backflow conveyer pipe at the bottom of steam conveying pipe and the tower respectively, discharge end and stirring distributing device intercommunication, the flow of material backflow conveyer pipe at the bottom of steam conveying pipe and the tower is controlled through flow controller. The utility model discloses can realize that the independent switching of fractionating tower bottom steam stirring and slurry oil stirring uses or mutual compensation uses, and the unable exclusive use's of slurry oil stirring problem at the bottom of the tower among the solution prior art is favorable to improving energy-conserving effect and economic benefits.

Description

Fractionating tower bottom stirring device

Technical Field

The utility model belongs to the technical field of the fractionating tower stirring, especially, relate to a stirring device at bottom of fractionating tower.

Background

The temperature of the bottom material of the fractionating tower is high, and the bottom material is easy to decompose or coke after being remained for a long time, so the bottom material needs to be continuously stirred. A distribution coil is generally disposed in the tower bottom near the outlet of the tower bottom, and a plurality of nozzles are disposed on the distribution coil for spraying the stirring medium from the nozzles into the liquid at the tower bottom to achieve the stirring effect. The stirring medium used may be either a gaseous medium or a liquid medium. The gas is generally selected from steam and is connected to the bottom coil pipe of the tower from a steam pipe network through a pipeline, and the steam stirring energy consumption is large and the cost is high. The liquid medium is generally liquid material at the bottom of the tower, and a path of material is led out from the outlet of a pump at the bottom of the tower and returned to a coil pipe at the bottom of the tower, so that the energy consumption and the cost are much lower than those of steam stirring.

As shown in figure 1, the structure of the steam stirring at the bottom of the fractionating tower is a schematic diagram, and the stirring device can only use steam for stirring, so that the energy consumption is high and the cost is high.

As shown in fig. 2, a schematic structural diagram of dual stirring of steam and slurry at the bottom of a fractionating tower is shown, wherein in the existing normal production process, the material at the bottom of the fractionating tower is generally adopted, and in the start-up and shutdown process or special working conditions, the steam is generally used as a stirring medium. However, because both the two coils are arranged in the tower, when the liquid material at the bottom of the tower is used, steam needs to be introduced into the steam coil, otherwise the steam coil is coked and blocked, and a plurality of plants stop using the stirring system for the liquid material at the bottom of the tower and use the steam all the time, thereby increasing the energy consumption and the cost.

Disclosure of Invention

The utility model aims to solve the technical problem that a fractionating tower bottom agitating unit is provided, realize that the independent switch of fractionating tower bottom steam stirring and slurry oil stirring uses or mutual compensation uses, and the unable exclusive use's of slurry oil stirring problem at the bottom of the tower among the solution prior art is favorable to improving energy-conserving effect and economic benefits.

The utility model provides a technical scheme that its technical problem adopted provides a fractionating tower bottom of tower agitating unit, including fractionating tower, stirring distributing device, steam conveying pipe and tower bottom material backward flow conveyer pipe, the stirring distributing device sets up inside at the bottom of the fractionating tower, discharging pipe intercommunication at the bottom of tower bottom material backward flow conveyer pipe and the fractionating tower still includes tee bend mixer flow controller, two feed ends of tee bend mixer communicate with steam conveying pipe and tower bottom material backward flow conveyer pipe, discharge end and stirring distributing device intercommunication respectively, the flow of steam conveying pipe and tower bottom material backward flow conveyer pipe is controlled through flow controller.

Steam flow meter and steam flow control valve are installed to the delivery pipe, material flow meter and material flow control valve are installed to material backward flow conveyer pipe at the bottom of the tower, steam flow meter, material flow meter, steam flow control valve and material flow control valve are connected with flow controller respectively and are formed detection feedback control.

The stirring distributing device is of a coil structure, and nozzles are distributed on the coil at intervals.

And a discharge pump is arranged on a tower bottom discharge pipe of the fractionating tower.

Advantageous effects

The utility model discloses in, steam delivery pipe and tower bottom material backward flow conveyer pipe communicate with same stirring distributing device through the tee bend blender respectively to realize the control to steam and tower bottom slurry oil material transport flow through flow controller, can realize that fractionating tower bottom steam stirring and slurry oil stirring carry out independent switching as required and use or mutual compensation use, solve the unable exclusive use's of tower bottom stirring slurry oil problem among the prior art, be favorable to improving energy-conserving effect and economic benefits.

Drawings

Fig. 1 is a schematic structural diagram of a conventional fractionation tower bottom steam stirring device.

Fig. 2 is a schematic structural diagram of a conventional double stirring device for tower bottom steam and slurry oil materials of a fractionating tower.

Fig. 3 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

The fractionating tower bottom stirring device shown in fig. 3 comprises a steam flow meter 1, a material flow meter 2, a steam flow regulating valve 3, a material flow regulating valve 4, a three-way mixer 5, a flow controller 6, a stirring distributor 7, a fractionating tower 8, a discharge pump 9, a steam conveying pipe 10 and a tower bottom material reflux conveying pipe 11.

Stirring distributing device 7 sets up inside 8 tower bottoms of fractionating tower, and stirring distributing device 7 is the coil pipe structure, and interval distribution has the nozzle on the coil pipe for to 8 tower bottoms of fractionating tower steam injection or slurry oil material realize the stirring effect to the material at the bottom of the tower. The tower bottom of the fractionating tower 8 is connected with a discharge pipe, and a discharge pump 9 is arranged on the discharge pipe at the tower bottom.

The discharge end of the three-way mixer 5 is communicated with the stirring distributor 7. One end of a tower bottom material reflux conveying pipe 11 is communicated with a tower bottom discharge pipe of the fractionating tower 8, and the other end of the tower bottom material reflux conveying pipe is communicated with a feed end of the three-way mixer 5. One end of the steam conveying pipe 10 is communicated with a steam pipe network, and the other end of the steam conveying pipe is connected to the other feeding end of the three-way mixer 5.

The steam conveying pipe 10 is provided with a steam flowmeter 1 and a steam flow regulating valve 3, the tower bottom material backflow conveying pipe 11 is provided with a material flowmeter 2 and a material flow regulating valve 4, and the steam flowmeter 1, the material flowmeter 2, the steam flow regulating valve 3 and the material flow regulating valve 4 are respectively connected with the flow controller 6. The steam flow meter 1 and the material flow meter 2 are used for respectively detecting the steam conveying flow and the oil slurry material conveying flow and feeding back signals to the flow controller 6, and the flow controller 6 is used for controlling the steam flow regulating valve 3 and the material flow regulating valve 4 to realize the regulation of the steam flow of the steam conveying pipe 10 and the oil slurry flow of the tower bottom material backflow conveying pipe 11.

Claims

1. The utility model provides a fractionating tower bottom of tower agitating unit, includes fractionating tower (8), stirring distributing device (7), steam conveying pipe (10) and tower bottom material backflow conveying pipe (11), stirring distributing device (7) set up inside at fractionating tower (8) tower bottom, tower bottom material backflow conveying pipe (11) and fractionating tower (8) tower bottom discharging pipe intercommunication, its characterized in that: still include tee bend blender (5) and flow controller (6), two feed ends of tee bend blender (5) communicate with delivery pipe (10) and tower bottom material backward flow conveyer pipe (11) respectively, discharge end and stirring distributing device (7) intercommunication, the flow of delivery pipe (10) and tower bottom material backward flow conveyer pipe (11) is controlled through flow controller (6).

2. The fractionating tower bottom stirring apparatus according to claim 1, wherein: the system is characterized in that a steam flow meter (1) and a steam flow regulating valve (3) are installed on the steam conveying pipe (10), a material flow meter (2) and a material flow regulating valve (4) are installed on the tower bottom material backflow conveying pipe (11), and the steam flow meter (1), the material flow meter (2), the steam flow regulating valve (3) and the material flow regulating valve (4) are respectively connected with a flow controller (6) to form detection feedback control.

3. The fractionating tower bottom stirring apparatus according to claim 1, wherein: the stirring distributor (7) is of a coil structure, and nozzles are distributed on the coil at intervals.

4. The fractionating tower bottom stirring apparatus according to claim 1, wherein: and a discharge pump (9) is arranged on a tower bottom discharge pipe of the fractionating tower (8).