Flue gas recovering water-saving system

A technology of water-saving system and flue gas recovery, which is applied in the field of electric power and can solve problems such as lower thermal efficiency

Inactive Publication Date: 2018-09-21
CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, the present invention aims to overcome the defect of lower actual thermal efficiency of the overall combined cycle of the flue gas recovery and water-saving system in the prior art, and provides a flue gas recovery and water-saving system

Method used

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  • Flue gas recovering water-saving system
  • Flue gas recovering water-saving system

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Effect test

Embodiment 1

[0022] Such as figure 1 The shown flue gas recovery and water-saving system includes: a waste heat boiler 10, a gas turbine unit 20 connected to the waste heat boiler 10, a steam turbine unit 30 and a heat exchange unit 40, and the heat exchange unit 40 includes a heat exchange unit 40 connected to the waste heat boiler 10 The heat exchanger 41 connected, the water tank 42 that is located at the bottom of the heat exchanger 41 and communicates with the heat exchanger 41, the drainage branch 43 connected with the water tank 42, the drainage valve 44 that is located on the drainage branch 43, and the The chimney 45 to which the heater 41 is connected.

[0023] In this embodiment, the gas turbine unit 20 includes a compressor 21, a combustion chamber 22, and a turbine 23 connected in sequence. When the flue gas recovery and water-saving system is in operation, air enters the compressor 21 for compression, and the compressed air then enters The combustion chamber 22 burns togethe...

Embodiment 2

[0036] Such as figure 2 As shown, the structure and working principle of this embodiment are similar to those of Embodiment 1, the difference is that the waste heat boiler 10 of this embodiment connects with the air inlet 411 of the heat exchanger 41 through the first branch 111 The gas outlet 411 of the heat exchanger 41 is connected to the smoke inlet of the chimney 45; the waste heat boiler 10 is connected to the chimney through the second branch 112, and the second branch 112 is provided with There is a third regulating valve 53 . This embodiment adopts a conventional chimney instead of the sectional chimney as described in Embodiment 1, and only has one smoke inlet and one smoke outlet, and replaces the baffle plate 451 located inside the chimney in Embodiment 1 with the second chimney. The third regulating valve 53 on the branch 112. When the gas turbine unit 20 is in normal high-load operation and the whole set of flue gas recovery and water-saving system is put into...

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Abstract

The invention discloses a flue gas recovering water-saving system. The flue gas recovering water-saving system comprises a waste heat boiler, and a gas turbine unit, a steam turbine unit and a heat exchange unit connected to the waste heat boiler, separately, wherein the heat exchange unit comprises heat exchangers connected to the waste heat boiler, a water tank arranged in the bottom of the heatexchangers and communicating to the heat exchangers, a drainage branch connected to the water tank, a drainage valve arranged on the drainage branch and a chimney connected to the heat exchangers. According to the embodiment, the heat exchange efficiency is high while condensation water is collected. Flue gas, the temperature of which is smaller than the temperature of a water dew point, is discharged then, so that the temperature of the discharged flue gas is lower while the utilization ratio of waste heat is improved. The flue gas recovering water-saving system is more environment-friendly,and is high in integral combined circular actual heat efficiency.

Description

technical field [0001] The invention relates to the field of electric power technology, and more specifically, to a flue gas recovery and water-saving system. Background technique [0002] The traditional flue gas recovery and water-saving system is to set the flue gas discharge chimney as a device integrating the spray tower and the chimney. The spray water is used in the front spray tower to mix and exchange heat with the tail flue gas entering after the boiler burns, reducing the Flue gas temperature recovers latent heat of vaporization of water vapor and water medium. Since the traditional flue gas recovery and water-saving system is a mixed heat exchange between flue gas and water, the heat transfer resistance on the flue gas side is very large. The working ability and efficiency of the system make it impossible for the tail flue gas to be discharged from the chimney, or even to flow and exchange heat smoothly from bottom to top in the spray tower, resulting in the ina...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F02C6/18F01K23/10
CPCF01K23/10F02C6/18
Inventor郑赟印佳敏施海云蔡春荣王路郭子暄黄剑眉
OwnerCHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD