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Liquid phase heat exchange fluidized bed heat exchanger

A technology of heat exchanger and liquid phase, which is applied in the field of fluidized bed heat exchanger for liquid phase heat exchange, and can solve the problems of decreased heat exchange effect and easy fouling of heat exchanger

Active Publication Date: 2017-04-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the heat exchanger in the prior art is easy to foul, and the heat exchange effect is obviously reduced after long-term use. It provides a liquid-phase heat exchange fluidized bed heat exchanger

Method used

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  • Liquid phase heat exchange fluidized bed heat exchanger
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  • Liquid phase heat exchange fluidized bed heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] use figure 1The liquid-phase heat-exchanging fluidized-bed heat exchanger shown is applied to a constant-top heat exchanger of a refinery's atmospheric and decompression device. The liquid-phase heat-exchanging fluidized-bed heat exchanger is equipped with 442 heat exchanger tubes. The length of each tube is 5000mm, the diameter of the tube is Φ22×1.5mm, and the tubes are arranged in an equilateral triangle. The solid particles are glass beads with an average particle diameter of 5 mm, and the average volume solid content of the solid particles in the liquid-phase heat exchange fluidized bed heat exchanger is 3%. The liquid phase is crude oil, and the flow velocity is 1.5m / s. The distribution bin is figure 2 Conical shape shown. Distribution box height 500mm. There are 1768 thin tubes with a diameter of 6mm and a length of 8mm. The diameter of the lower casing is 12mm, and the arrangement is as follows: one in the middle, with a length of 15mm, no bevel and no hol...

Embodiment 2

[0030] The same liquid-phase heat exchange fluidized bed heat exchanger as in Example 1 is applied to the constant top heat exchanger of a refinery's atmospheric and vacuum device. The solid particles are made of glass beads with an average particle diameter of 2mm. The average volume solid content in the heat fluidized bed heat exchanger is 8%. The liquid phase is crude oil, and the flow velocity is 4m / s. The distribution bin is figure 2 Trumpet shown. Distribution box height 1500mm. There are 1768 thin tubes with a diameter of 6mm and a length of 15mm. The diameter of the casing along the lower edge is 7.5mm, and the arrangement is as follows: one in the middle, length 20mm, no groove, no opening; 183 casings in the middle 7 layers, length 30mm, groove 30 degrees, one hole, aperture 3mm, a total of 258 pieces in the outer 4 layers, the length is 50mm, the bevel is 15 degrees, and two holes are opened with a diameter of 2.5mm. The distribution plate is Figure 4 As sho...

Embodiment 3

[0032] The same liquid-phase heat exchange fluidized bed heat exchanger as in Example 1 is applied to a constant top heat exchanger of a refinery atmospheric and decompression device, and the solid particles are alumina beads with an average particle diameter of 5 mm. The average volume solid content in the phase-exchange fluidized bed heat exchanger is 3%. The liquid phase is crude oil, and the flow velocity is 1.5m / s. The distribution bin is figure 2 Conical shape shown. Distribution box height 500mm. There are 1326 thin tubes distributed, with a diameter of 6mm and a length of 8mm. The diameter of the casing along the lower edge is 12mm, and the arrangement is as follows: one in the middle, length 15mm, no groove, no opening; 183 casings in the middle 7 layers, length 20mm, groove 60 degrees, and a hole with a diameter of 6mm , a total of 258 pieces in the outer 4 layers, the length is 30mm, the bevel is 30 degrees, and a hole is opened with a diameter of 6mm. The dis...

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Abstract

The invention relates to a liquid phase heat exchange fluidized bed heat exchanger, and is mainly used for solving the technical problem that in the traditional technology, the tube side of an overhead heat exchanger of an atmospheric and vacuum distillation unit is prone to scale formation, and after long-period usage, the heat exchange effect is obviously reduced. The liquid phase heat exchange fluidized bed heat exchanger comprises a lower tubular box 1, heat exchanger column tubes 2, an upper tubular box 3, a solid-liquid separator 4, a downcomer 5, a solid particle tank 6, a liquid storage tank 7, a liquid circulating pump 8, a distribution box 9, lower edge casing pipes 10, a distribution plate 11, a distribution disc 12 and thin tubes 13. The outlet of the distribution box 9 is connected with the thin tubes 13, the heat exchanger column tubes 2 are connected with the upper tubular box 3, the upper tubular box 3 is connected with the solid-liquid separator 4, solid particles enter the solid particle tank 6 through the downcomer 5, and then return to the lower tubular box 1, and liquid enters the liquid storage tank 7, and is sent to the lower tubular box 1 through the liquid circulating pump 8. By employing the above technical scheme, the above technical problem is well solved, and the operation period of the overhead heat exchanger of the atmospheric and vacuum distillation unit can be prolonged.

Description

technical field [0001] The invention belongs to the field of chemical industry, specifically, belongs to the field of long-period operation of chemical heat exchange equipment, and relates to a liquid-phase heat exchange fluidized bed heat exchanger, which is widely used to solve the problem of liquid phase leakage in the tube side, and the tube side is prone to knots. Long-term operation of scale-clogged shell-and-tube heat exchangers. Background technique [0002] Heat exchangers are widely used in petroleum, chemical, energy and other industries. However, as the use time increases, the heat exchanger will inevitably have dirt adhesion, which will lead to a decrease in the heat exchange efficiency of the heat exchanger and an increase in resistance, which will affect the normal operation of the heat exchanger. [0003] The development of liquid-phase heat exchange fluidized bed heat exchangers to replace traditional heat exchangers can improve the heat exchange effect of ...

Claims

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Application Information

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IPC IPC(8): F28D7/16F28F19/00F28G1/12
CPCF28D7/16F28F19/00F28G1/12
Inventor 田立达顾军民张斌
Owner CHINA PETROLEUM & CHEM CORP
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