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Integrating apparatus fo magnesium oxide with desulfurizing, dust-collecting and energy-saving functions and its production

A bag filter and waste heat recovery device technology, applied in chemical instruments and methods, separation methods, energy-saving heating/cooling, etc., can solve the problems of high exhaust gas temperature and boiler efficiency, and achieve great advantages, high economic value, The effect of improving dust removal efficiency

Inactive Publication Date: 2007-11-21
童裳慧
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the impact of the current high boiler exhaust gas temperature on the boiler efficiency, dust collector and desulfurization process, the present invention provides an integrated solution that combines flue gas waste heat recovery with desulfurization and environmental protection

Method used

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  • Integrating apparatus fo magnesium oxide with desulfurizing, dust-collecting and energy-saving functions and its production
  • Integrating apparatus fo magnesium oxide with desulfurizing, dust-collecting and energy-saving functions and its production

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Experimental program
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specific Embodiment approach

[0023] In Fig. 2, the boiler (2) provides hot water or steam to the heat user or steam user (1), the flue gas damper 1 (3), the flue gas damper 2 (4) are closed, and the flue gas damper 3 (5 ), the flue gas baffle plate 4 (10) is opened, the flue gas from the boiler (2) enters the ultra-speed superconducting heat pipe waste heat recovery device (6) to exchange heat with cold water, and the hot water after heat exchange is provided to the hot water user (7) for use. The heated flue gas enters the bag filter (8) for dedusting, the dedusted flue gas enters the magnesium oxide desulfurization tower (9) for desulfurization, and the desulfurized flue gas is discharged to the atmosphere.

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Abstract

The invention is concerned with the afterheat reclamation device when the smoke evacuation of the 170 to 240 centigrade boiler enters the speedy superconducting pipe, it is: the smoke exchanges heat with other medium such as the feedwater of the boiler, the filling water of the boiler, the heating back water of the user, or the heat source water of the heat pump system, which can not only reduce the temperature of the smoke but also increase the temperature of the circle medium; the smoke enters the bag-style dedusting equipment directly after the smoke passes the afterheat reclamation device of the speedy superconducting pipe, the wastage of the bag decreases a lot because the improvement of the dedust; the smoke enters the decarbolizing tower to process desulfurize by magnesia after dedust, the desulfurize substance is magnesite or magnesia powder, the desulfurize byproduct are MgSO3, MgSO4.7H2O or MgSO4.1H2O that is with high economy value.

Description

technical field [0001] The invention relates to a comprehensive treatment method for boiler flue gas, in particular to a flue gas treatment method combining deep utilization of residual heat of boiler flue gas with desulfurization and environmental protection. Background technique [0002] At present, industrial boilers discharge a large amount of flue gas at 170-240°C during operation. Due to the waste heat of low-temperature flue gas and low grade, there are very few recovery methods at present, and a large amount of low-temperature waste heat is wasted, which reduces the efficiency of the boiler; at the same time , in the dust removal and desulfurization process, because the temperature of the flue gas enters the dust collector with a temperature of 170-240 ° C, the bag cost of the bag filter rises sharply, the operating cost increases, and the service life is shortened, resulting in a decrease in dust removal efficiency, which in turn decreases The desulfurization tower ...

Claims

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Application Information

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IPC IPC(8): B01D53/81B01D53/50F23J15/00
CPCY02B30/52Y02B30/123
Inventor 童裳慧何家驹刘景明吴晓光
Owner 童裳慧
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