Fractionating tower bottom oil emptying device with dredging function

Abstract

The fractionating tower bottom oil emptying device with the dredging function comprises a tee joint, one end of two openings in the upper portion of the tee joint is connected with a discharge outlet in the bottom of a fractionating tower, and a dredging mechanism is arranged at the other end of the tee joint. A lower opening of the tee joint is connected with a discharge pipeline; the dredging mechanism comprises a flange matched with the tee joint, a dredging rod is arranged in the middle of the flange in a penetrating mode, and a dredging head is arranged at the front end of the dredging rod. A supporting frame is further arranged on the outer side of the flange, and a supporting table is arranged on the upper side of the supporting frame. A rod body of the dredging rod is in sliding connection fit with the through hole in the middle of the flange, and a thread is arranged at the rear end of the dredging rod and matched with the threaded hole in the supporting frame; the rotating handle is fixed at the tail end of the dredging rod. The oil slurry discharging device is simple in structure and convenient to operate, can safely discharge oil slurry at the bottom of the fractionating tower while reducing the working intensity, and effectively solves the problems that the oil slurry at the bottom of the fractionating tower is difficult to dredge during shutdown maintenance and line sweeping, and the safety of personnel cannot be ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment structure, in particular to a distillation tower bottom oil venting device with a dredging function. Background Art

[0002] During the maintenance and line sweeping period of the fractionator T4201 in the CPP catalytic thermal cracking unit, the bottom oil needs to be drained, but the bottom oil has a high temperature and viscosity, and may also contain impurities, which often cause pipeline blockage and cannot be effectively discharged. The existing treatment method is to close the bottom extraction valve of the fractionator during the shutdown and line sweeping period, disassemble the rear side of the second manual valve of the bottom discharge valve of the tower, open the first valve, and manually dredge it with tools such as bamboo blanks and steel chisels. The moment after dredging, immediately pull out the steel chisel, close the valve and install the previously disassembled structure, then open the valve to complete the dredging process.

[0003] In the existing operation process, during the shutdown and line sweeping period, the bottom extraction valve of the distillation tower is closed and the bottom discharge valve is opened. Once the valve is unblocked during venting and pressure relief, if the valve is not closed in time, a large amount of high-temperature oil slurry will flow to the ground in an unorganized manner, and even splash onto personnel, causing burns to personnel and environmental pollution, posing a safety hazard; at the same time, the labor intensity of the operators is increased, and the loading and unloading pipelines also affect the operating efficiency. Utility Model Content

[0004] The utility model aims to provide a distillation tower bottom oil venting device with a dredging function to solve the problems in the prior art.

[0005] The utility model is realized by the following technical scheme: a distillation tower bottom oil venting device with dredging function, characterized in that: it comprises a T-shaped tee, one end of the two upper openings of the tee is connected to the discharge port at the bottom of the distillation tower, and the other end is provided with a dredging mechanism; the lower opening of the tee is connected to the discharge pipeline;

[0006] The dredging mechanism includes a flange that matches with the tee, a dredging rod is arranged through the middle part of the flange, and a dredging head is arranged at the front end of the dredging rod; a support frame is also arranged on the outside of the flange, and a support platform is arranged on the upper side of the support frame; the rod body of the dredging rod is slidably matched with the through hole in the middle part of the flange, and the rear end of the dredging rod is provided with a thread that matches with the threaded hole on the support frame; the rotating handle is fixed at the tail end of the dredging rod.

[0007] Further: the dredging head is welded on the dredging rod.

[0008] Furthermore: the dredging head is conical or frustum-shaped, and grooves are provided on both sides of the dredging head.

[0009] The beneficial effects of the utility model are as follows: the utility model has a simple structure, is easy to operate, reduces work intensity, and can safely drain the oil slurry at the bottom of the tower, effectively solving the problem of difficulty in clearing the oil slurry at the bottom of the distillation tower during shutdown, maintenance and line sweeping, and the inability to ensure personnel safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described below in conjunction with the accompanying drawings.

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a partial structural schematic diagram of the dredging mechanism of the utility model;

[0013] Figure 3 It is a schematic diagram of the coordinated structure of the utility model and a fractionating tower.

[0014] Explanation of the serial numbers in the figure: 1 is a tee, 2 is a discharge port, 3 is a dredging mechanism, and 4 is a discharge pipeline;

[0015] 31 is a flange, 32 is a dredging rod, 33 is a dredging head, 34 is a supporting frame, 35 is a supporting platform, and 36 is a rotating handle. DETAILED DESCRIPTION

[0016] like Figure 1-3 The utility model is shown as a device for emptying the bottom oil of a fractionating tower with a dredging function. The device is used to empty the bottom oil in the fractionating tower 100. A bottom extraction pipeline 2 is arranged at the bottom of the fractionating tower, an extraction valve 21 is arranged on the bottom extraction pipeline, and an emptying branch is arranged horizontally above the extraction valve. The emptying device of this scheme is arranged on the emptying branch, which includes a T-shaped tee 1, the two openings of the upper part of the tee (i.e., the upper horizontal side of the T-shape) are in the horizontal direction, and the lower opening is in the vertical downward direction. The left opening is connected to the bottom of the distillation tower, and the right opening is connected to a dredging mechanism 3, so that the dredging mechanism is facing the discharge port on the left, that is, the position prone to blockage, to facilitate dredging; the lower opening of the tee is connected to the discharge pipeline 4 to discharge the bottom oil; the dredging mechanism 3 includes a flange 31, the flange is connected to the tee bolt, and a through hole matched with the dredging rod 32 is provided in the middle of the flange, and a sealing ring is provided in the through hole to improve the sealing performance; a dredging rod 32 is provided through the middle of the flange, and a dredging head 33 is provided at the front end of the dredging rod; a support frame 34 is also provided on the right side of the flange, and a support platform 35 is provided on the right side of the support frame; the front end of the dredging rod is a smooth rod, which is slidably matched with the through hole in the middle of the flange, and the rear end of the dredging rod is a threaded rod, which is threadedly matched with the threaded hole on the support platform, and the rear end of the dredging rod is fixedly connected with a rotating handle 36. Rotate the handle to drive the dredging rod to rotate. With the cooperation of the thread, the rotation of the dredging rod also drives the dredging rod forward or backward.

[0017] Preferably: the unclogging head is sleeved or welded on the front end of the unclogging rod; the unclogging head is conical or frustum-shaped, and grooves are provided on both sides of the unclogging head, and the two opposite grooves make the unclogging head form an I-shape or an approximate T-shape, thereby improving the unclogging effect.

[0018] Preferably: an observation valve is arranged on the side wall of the tee close to the lower opening.

[0019] Preferably: a high temperature resistant sealing pad or sealing ring is provided at each connection position.

[0020] The working process of the structure of the utility model is as follows: when the bottom oil cannot be discharged during the discharge process, the dredging mechanism is started, and the handle is rotated to drive the dredging head to extend into the solidified bottom oil or the blocked position, and it is repeated many times, and the dredging head is used to force dredge it, and the dredging effect is monitored through the observation valve. If oil flows out, the dredging is completed and the dredging head can be returned to its position.

[0021] The utility model has a simple structure and is easy to operate. It can reduce the work intensity and safely drain the oil slurry at the bottom of the tower, effectively solving the problem that the oil slurry at the bottom of the distillation tower is difficult to clear during shutdown for maintenance and line sweeping, and the safety of personnel cannot be guaranteed.

Claims

1. A distillation tower bottom oil venting device with dredging function, characterized in that: It includes a T-shaped tee, one end of the two upper openings of the tee is connected to the discharge port at the bottom of the fractionation tower, and the other end is provided with a dredging mechanism; the lower opening of the tee is connected to the discharge pipeline; The dredging mechanism includes a flange that matches with the tee, a dredging rod is arranged through the middle part of the flange, and a dredging head is arranged at the front end of the dredging rod; a support frame is also arranged on the outside of the flange, and a support platform is arranged on the upper side of the support frame; the rod body of the dredging rod is slidably matched with the through hole in the middle part of the flange, and the rear end of the dredging rod is provided with a thread that matches with the threaded hole on the support frame; the rotating handle is fixed at the tail end of the dredging rod.

2. The fractionation tower bottom oil venting device with dredging function according to claim 1, characterized in that: The dredging head is welded on the dredging rod.

3. The fractionation tower bottom oil venting device with dredging function according to claim 1 or 2, characterized in that: The dredging head is in a cone or a frustum shape, and grooves are provided on both sides of the dredging head.

Images