Residual-heat used type electric dust separator and its application system

A technology of electrostatic precipitator and waste heat recovery system, applied in the field of electrostatic precipitator, can solve the problems of large metal consumption, single function, high price, etc., and achieve the effect of large heat exchange area, high return rate and small investment

Inactive Publication Date: 2005-06-08
XI AN JIAOTONG UNIV
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Problems solved by technology

However, it is bulky and consumes a lot of metal in the manufacturing process. It has been called the fourth largest equipment in thermal power plants, and it has a single function, which can only remove dust and is expensive, which is its fatal shortcoming.
[0003] On the other hand, the flue gas discharged from the tail flue of the boiler in a thermal power plant has a temperature of 120°C to 140°C, and some of them can reach a temperature of 160°C to 200°C, which wastes a lot of energy.

Method used

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  • Residual-heat used type electric dust separator and its application system
  • Residual-heat used type electric dust separator and its application system

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Embodiment Construction

[0014] The waste heat utilization type electrostatic precipitator of the present invention includes a plurality of finned tube heat exchange elements composed of the metal anode plate 1 of the electrostatic precipitator. The header 2 and the outlet header 4 are connected in parallel to form a plate heat exchanger, and a vibrator 3 is also arranged in the plate heat exchanger; the structure is as follows figure 1 shown.

[0015] The metal anode plate 1 of the electrostatic precipitator is welded to the condensation water pipe 5 and connected in series to form a finned tube heat exchange element. A plurality of such finned tube heat exchange elements are connected in parallel through the inlet header 2 and the outlet header 4, and are connected with a vibrator 3 to form a plate heat exchanger.

[0016] The condensed water of the thermal system enters the plate heat exchanger from the inlet header 2, and conducts heat exchange with the flue gas in a countercurrent manner, and th...

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Abstract

A afterheat utilization type electric dust separator for the steam electric power plant is disclosed. It is installed between the smoke outlet of boiler and chimney and features that it has an afterheat exchanger instead of conventional metallic plate anode for absorbing the afterheat of fume to heat the water needed by production procedure. Its advantages are low cost and high energy saving effect.

Description

technical field [0001] The invention belongs to the technical field of electric dust removal, relates to a method for recovering and utilizing waste heat, in particular to a waste heat utilization type electric dust collector used at the tail of a boiler flue and an application system thereof. Background technique [0002] Due to the high dust removal efficiency of electrostatic precipitators and the ability to meet high-level environmental protection requirements, it is an indisputable reality that they are widely used in modern large-scale thermal power plants and cement plants. However, it is bulky and consumes a lot of metal in the manufacturing process. It has been called the fourth largest equipment in thermal power plants. It has a single function, which can only remove dust and is expensive, which is its fatal shortcoming. [0003] On the other hand, the flue gas discharged from the tail flue of the boiler in a thermal power plant has a temperature of 120°C to 140°C,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C3/04B03C3/40B03C3/76F23J15/00F27D17/00F28C3/06
CPCY02P10/25
Inventor 林万超陈国慧邢秦安
Owner XI AN JIAOTONG UNIV
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