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Condensation system at the top of the solvent regeneration tower and the plate and shell heat exchanger used

A technology of condensing system and regeneration tower, which is applied in the field of heat transfer device and heat transfer, can solve the problems of complex process layout of forced reflux method, reduce the production capacity of the device, and increase equipment maintenance costs, so as to reduce installation costs and maintenance costs, prevent The effect of backflow and reduction of replacement frequency

Active Publication Date: 2016-06-22
ZHEJIANG JIANYE CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are two deficiencies in the above-mentioned existing regenerative tower top condenser: (1) the forced reflux mode process layout is complicated
(2) The top condenser is severely corroded
The internal corrosion of the heat exchanger is serious, the service life is short, and frequent shutdowns are required for maintenance and replacement, which greatly reduces the production capacity of the device and increases the maintenance cost of the equipment

Method used

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  • Condensation system at the top of the solvent regeneration tower and the plate and shell heat exchanger used
  • Condensation system at the top of the solvent regeneration tower and the plate and shell heat exchanger used
  • Condensation system at the top of the solvent regeneration tower and the plate and shell heat exchanger used

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1, a kind of plate and shell heat exchanger, such as Figure 4 As shown, it includes cylindrical shell 1, plate core group 2, guide block 3, plate side inlet nozzle 4, plate side outlet nozzle 5, shell side inlet nozzle 6, shell side outlet nozzle 7, pressure Tight plate 8, plate core flange surface 9, shell flange surface 10.

[0050] The front end of the cylindrical housing 1 is provided with a housing flange surface 10, and the rear end of the cylindrical housing 1 is a sealing end.

[0051] details as follows:

[0052] Plate 11 such as Figure 5 , Figure 6 and Figure 7 As shown, the plate 11 is a corrugated plate (a corrugated plate made of titanium is preferred), the depth h of the corrugation is set at 2.5 mm to 4 mm, and the width L of the corrugation is set at 10 mm to 15 mm; 11 is provided with a circular medium inlet 13 and a circular medium outlet 14 respectively. The connecting line between the centers of the medium inlet 13 and the medium...

Embodiment 2

[0063] Embodiment 2, the solvent regeneration tower overhead condensing system prepared by utilizing the plate and shell heat exchanger described in embodiment 1, such as image 3 As shown: the solvent regeneration tower overhead condensing system includes a plate-and-shell heat exchanger 100 and a liquid separator tank 200 installed sequentially from top to bottom (installation can be realized by conventional reinforcement supports) at the top of the regeneration tower 300; A gas outlet 50 is provided on the side wall of the regeneration tower 300 near the top of the tower.

[0064] The side wall of the liquid separation tank 200 is respectively provided with an exhaust port 20 and a return liquid nozzle 30 from top to bottom, and a liquid seal device 40 (belonging to conventional technology) with an overflow pipe is arranged at the bottom of the liquid separation tank 200 . At the same time, a liquid seal with a certain height (generally set at 400-600mm in the present inven...

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Abstract

The invention discloses a plate-shell heat exchanger, which comprises a cylindrical shell, a plate core group, a diversion block, a plate-side inlet nozzle, a plate-side outlet nozzle, a shell-side inlet nozzle, and a shell-side outlet pipe Nozzle, compression plate, plate core flange surface and shell flange surface, etc. The present invention also provides a solvent regeneration tower top condensation system prepared by using the above-mentioned plate and shell heat exchanger. The solvent regeneration tower top condensation system includes plate and shell heat exchangers installed at the top of the regeneration tower Heater and liquid separation tank; the heat medium in the regeneration tower enters the inlet nozzle of the shell side from the gas outlet; the heat medium is condensed after passing through the flow channel of the shell side, and the condensed two-phase fluid flows out of the outlet nozzle of the shell side and passes through the return liquid pipe The nozzle flows into the liquid separation tank; the cooling water enters the plate side flow channel from the plate side inlet nozzle through the medium inlet pipe, and the heated cooling water finally flows out from the plate side outlet nozzle after passing through the medium outlet pipe.

Description

technical field [0001] The invention belongs to the technical field of heat transfer, relates to an arrangement method of a condensation system at the top of a solvent regeneration tower and a plate-and-shell heat exchanger used, and belongs to the technical field of heat transfer devices. Background technique [0002] The solvent regeneration tower (abbreviated as the regeneration tower) is a rectification tower with a partial condenser and full reflux of the liquid phase. Most of the acid gas contained in the liquid in the solvent regeneration tower is decomposed in the tower, and then enters the reboiler at the bottom of the regeneration tower to be further heated and desorbed, and the solvent liquid is fully regenerated; at the same time, a large amount of gas phase medium at the top of the tower is in the top condenser Cooled to the liquid phase by refrigerant, and then by natural reflux (such as figure 1 ) or forced reflow (such as figure 2 ) Two forms return the co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D9/00
Inventor 栾辉宝郑伟业迟浩淼王崧孙超钱晔张建明张磊
Owner ZHEJIANG JIANYE CHEM