Plate type air preheater

An air preheater and plate-type technology, applied in lighting and heating equipment, combustion methods, indirect carbon dioxide emission reduction, etc., can solve the problems of heat transfer efficiency and pressure drop, easy dust accumulation, long-term operating cost, heat transfer Low efficiency and other problems, to achieve the effect of solving the problem of equipment dust accumulation, long-term reliable operation, and reducing equipment weight

Active Publication Date: 2006-12-27
GANSU LANPEC TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the air preheaters in the prior art are heat pipe, shell and tube, heat storage and plate-fin air preheaters, which generally have low heat transfer efficiency, air leakage, large volume, easy dust accumulation and high long-term operating cost

Method used

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  • Plate type air preheater
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  • Plate type air preheater

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1: One-layer plate-bundle plate-bundle assembly of plate air preheater.

[0033] Structure like figure 1 As shown, it includes: a box body 1, heat exchange components, and air and flue gas inlet and outlet pipe boxes. The plate heat exchange components are arranged in the box body 1. The plate heat exchange components are composed of a layer of plate bundle modules 4 combined into a plate The upper end of the plate bundle assembly 7 communicates with the flue gas inlet pipe box 3 and the air outlet pipe box 2, and the lower end of the plate bundle assembly communicates with the flue gas outlet pipe box 6 and the air inlet pipe box 5. The plate bundle The module 4 is composed of corrugated plates, and the air and flue gas passages in the plate bundle module 4 are closed passages with opposite directions.

[0034] The shape of the corrugated plate is a hexagon, and it is provided with triangular distribution diversion areas 401 and 403 on the upper and lower sides, r...

Example Embodiment

[0040] Example 2: Plate air preheater of two-layer plate bundle assembly

[0041] Such as figure 2 Shown: including: box 1, heat exchange components and air and flue gas inlet and outlet pipe box, said box 1 is provided with plate heat exchange components, the plate heat exchange components are composed of upper and lower two-layer plate bundle modules 4 Combined into plate bundle components I and II, the upper end of the plate bundle component I communicates with the flue gas inlet pipe box 3 and the air outlet pipe box 2, and the lower end of the plate bundle component II communicates with the flue gas outlet pipe box 6 and the air inlet pipe box 5 The board bundle module 4 is formed by stacking corrugated plates, and the air and flue gas passages in the board bundle module 4 are closed passages with opposite directions.

[0042]The shape of the corrugated plate is a hexagon, and it is provided with triangular distribution diversion areas 401 and 403 on the upper and lower side...

Example Embodiment

[0049] Example 3: Air preheater of three-layer plate bundle assembly.

[0050] Such as image 3 Shown: the box 1 is provided with three upper, middle and lower plate bundle module layers, the upper layer is the high temperature section plate bundle module layer I, the middle is the middle temperature section plate bundle module layer II, and the lower layer is the low temperature section plate bundle module layer. Layer III, the structure and arrangement of the plate bundle module 4 are the same as those in Embodiments 1 and 2 and will not be repeated. The materials used: the upper plate bundle module I adopts high temperature resistant 354 alloy material, which is suitable for medium heat exchange above 1000℃; the middle temperature section plate bundle module 4 adopts 304 alloy steel, which is suitable for medium heat exchange around 700℃; the low temperature section plate bundle module 4 adopts Under 170-180℃, when there is a low temperature dew point, the use of corrosion-resi...

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Abstract

The invention relates to a sheet air preheating device, which comprises: a box, a heat exchange element, and an air-smoke entrance tubular box, wherein said box is arranged with sheet heat exchange element formed by sheet beam with at least one layer of one sheet beam module; the upper end of sheet beam is through to the smoke inlet tubular box and the air outlet tubular box, while the lower end is through to the smoke outlet tubular box and the air inlet tubular box; the sheet beam module is formed by layered ripple sheets; the air-smoke channels of sheet beam module are sealed channels with reversed direction. The invention uses reverse flow to exchange heat, with high efficiency, small volume, light weight and low cost.

Description

technical field [0001] The invention relates to a plate type air preheater used for heat exchange between high-temperature flue gas of boilers, heating furnaces and waste gas catalytic incinerators and cold air used for combustion for waste heat recovery. Background technique [0002] At present, heat exchange equipment using corrugated plates as heat transfer elements represents the mainstream development direction of heat exchange equipment, and more and more tube heat exchange equipment has been or will be replaced by plate heat exchange equipment. [0003] Most of the air preheaters in the prior art are heat pipe, shell and tube, heat storage and plate-fin air preheaters, which generally have low heat transfer efficiency, air leakage, large volume, easy dust accumulation and high long-term operating costs. shortcoming. Moreover, most of the existing air preheaters using corrugated plates as heat transfer elements are staggered channels, which have low heat transfer effi...

Claims

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Application Information

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IPC IPC(8): F23L15/00
CPCY02E20/34
Inventor 张延丰宋秉棠
Owner GANSU LANPEC TECH
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