Anti-scaling fluidized bed heat exchanger

A fluidized bed heat exchanger, heat exchanger technology, used in indirect heat exchangers, heat exchanger types, damage protection, etc.

Active Publication Date: 2018-09-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prior art fails to solve this problem well.

Method used

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  • Anti-scaling fluidized bed heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] use figure 1 The anti-scaling fluidized bed heat exchanger shown is applied to the lye cooler of the decarburization system of a synthetic ammonia plant. The anti-scaling fluidized bed heat exchanger is equipped with 442 heat exchanger tubes, and each tube is 4800mm long. The pipe diameter is Φ22×1.5mm, and the pipes 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 anti-scaling fluidized bed heat exchanger is 3%. The liquid phase is water, and the flow velocity is 1.5m / s. The distribution bin is figure 2 Conical shape shown. The height of the distribution box is 480mm. There are 1768 thin tubes distributed, 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 hole; a total of 183 in the middle 7 layers, a...

Embodiment 2

[0035] The same anti-scaling fluidized bed heat exchanger as in Example 1 is applied to the lye cooler of the decarburization system of an ammonia plant, and the solid particles are made of glass beads with an average particle diameter of 2mm, and the solid particles are heat-exchanged in the anti-scaling fluidized bed The average volume solids rate in the container is 8%. The liquid phase is water, and the flow velocity is 4m / s. The distribution bin is figure 2 Trumpet shown. The distribution box height is 1440mm. There are 1768 thin tubes distributed, 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. ...

Embodiment 3

[0037] The same anti-scaling fluidized bed heat exchanger as in Example 1 is applied to the lye cooler of the decarburization system of a synthetic ammonia plant. The solid particles are made of alumina beads with an average particle diameter of 5 mm. The solid particles are exchanged in the anti-scaling fluidized bed. The average volumetric solids content in the heater was 3%. The liquid phase is water, and the flow velocity is 1.5m / s. The distribution bin is figure 2 Conical shape shown. The height of the distribution box is 480mm. 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, with a length of 15mm, no bevel, and no hole; the middle layer 7 has a total of 183 pieces, a length of 20mm, a bevel of 60 degrees, and one hole is opened. 6mm, a total of 258 pieces in the outer 4 layers, a length of 30mm, a bevel of 30 degrees, and ...

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Abstract

The invention relates to an anti-scaling and de-scaling heat exchanger for a fluidized bed. The anti-scaling and de-scaling heat exchanger is aimed at solving the technical problem in the prior art. Therefore, tube passes of a decarburized lye cooler of a synthetic ammonia device are not easily scaled. After long-term use, the heat exchange effect is still good. The anti-scaling and de-scaling heat exchanger is composed of a lower tube box 1, a heat exchanger tube array 2, an upper tube box 3, a liquid-solid separator 4, a descending tube 5, a solid particle groove 6, a liquid storage tank 7, a liquid circulating pump 8, a distribution box 9, a spherical plug 10, a baffle plate 11, a distribution disc 12, a distribution plate 13, slim tubes 14 and a lower-edge sleeve tube 15. An outlet of the distribution box 9 is connected with the slim tubes 14. The heat exchanger tube array 2 is connected with the upper tube box 3 connected with the liquid-solid separator 4. Solid phase enters the solid particle groove 6 through the descending tube 5. Liquid phase enters the liquid storage tank 7. The solid phase and liquid phase circulate to return the lower tube box 1. The anti-scaling and de-scaling heat exchanger for the fluidized bed has following beneficial effects: by adoption of the technical scheme, the above technical problem is solved; and the anti-scaling and de-scaling heat exchanger can be used for prolonging running cycle of the decarburized lye cooler of the synthetic ammonia device.

Description

technical field [0001] The invention belongs to the field of chemical industry, in particular, belongs to the field of long-term operation of chemical heat exchange equipment, and relates to an anti-scaling 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 fouling and blockage Long-term operation problems of 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. The development of an anti-scaling fluidized bed heat exchanger to replace the traditional heat exchanger can improve the heat transfer effect of the heat exchanger and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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