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Washing condensing smoke triple recovery device

A recovery device and flue gas recovery technology, which is applied to the separation of dispersed particles, chemical instruments and methods, separation methods, etc., can solve the problems of single recovery function and material, heat energy moisture, and low recovery rate of sulfur and nitrogen compounds, so as to avoid smoke and dust Deposition and corrosion, effect of reducing flue gas temperature

Active Publication Date: 2015-04-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems of current flue gas treatment technology and equipment with single recovery function and material, low recovery rate of heat energy in flue gas, moisture in flue gas, and sulfur and nitrogen compounds, the present invention further provides a water-washing and condensing type flue gas three-recycling device

Method used

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  • Washing condensing smoke triple recovery device
  • Washing condensing smoke triple recovery device
  • Washing condensing smoke triple recovery device

Examples

Experimental program
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specific Embodiment approach 1

[0012] Specific implementation mode one: combine figure 1 To illustrate, the water-washing and condensing flue gas three-recovery device of this embodiment includes a water-washing spray tower 1, a gas-water condensation preheater 2, a first water-water heat exchanger 3, a sulfur and nitrogen recovery water processor 4, a first spray Drenching pump 5, first water treatment pump 6, first air outlet pipe 7, desulfurization water pipe 8, condensation water pipe 9, first spray water pipe 10 and heat carrying circulating water pipe 11; Gas-water separation packing 1-1, the middle part of the water washing spray tower 1 is equipped with a first nozzle 1-2, the spraying direction of the first nozzle 1-2 is set downward, and the lower part of the water washing spray tower 1 is provided with a second nozzle. A spray filler 1-3, the lower end of the water washing spray tower 1 is provided with a first water receiving tray 1-4, and the side wall of the lower end of the water washing spra...

specific Embodiment approach 2

[0019] Specific implementation mode two: combination figure 2Note that the water-washing and condensing flue gas three-recovery device of this embodiment also includes a flue gas water superheater 12, which is connected between the first air intake pipe 1-5 and the water-washing spray tower 1, and carries heat The circulating water pipe 11 communicates with the flue gas water superheater 12 after passing through the first water and water heat exchanger 3 .

[0020] Flue gas water superheater 12: It is used to heat the heat-carrying circulating water to above 100°C. In this superheater, due to high-temperature heat exchange, condensation is impossible, thus reducing the impact of sulfur, nitrogen and other compounds on the boiler tube wall. of corrosion.

[0021] With this design, the high-temperature flue gas first transfers part of the sensible heat to the heat-carrying circulating water in the heat-carrying circulating water pipe 11 through convective heat exchange in the ...

specific Embodiment approach 3

[0022] Specific implementation mode three: combination image 3 Note that the water-washing and condensing flue gas three-recovery device of this embodiment also includes a spray water superheater 13, which is arranged in the first spray packing 1-3, and the first spray water pipes 10 are sequentially connected to the spray water The shower superheater 13 and the first water and water heat exchanger 3 are connected with the first spray head 1-2.

[0023] In such a design, the spray water extracted from the first water receiving tray 1-4 is first heated by the spray water superheater 13, and then enters the first water and water heat exchanger 3 after further heating, so that the heat carrying circulating water pipe 11 The heat-carrying circulating water gets a higher temperature. Other components and connections are the same as those in the first embodiment.

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Abstract

The invention discloses a washing condensing smoke triple recovery device, relates to a triple recovery device of smoke heat, moisture and sulphur nitrogen, and aims to solve the problem that the current smoke recovery device is single in recovery function and materials, and the recovery rate and the utilization rate of heat energy in smoke and moisture in smoke are low. A first gas inlet tube is arranged on the side wall at the lower end of a washing spray tower. The upper end of the washing spray tower is communicated with one end of a first gas outlet tube which is fixedly connected with a gas-water condensing preheater. The first gas outlet tube and the gas-water condensing preheater are communicated with each other. The water outlet end of a desulfuration water tube is communicated with the side wall at the lower end of the washing spray tower. The water outlet end of a first spray header passes through a first water to water heat exchanger and is communicated with a first nozzle. A heat carrying circulating water tube is sequentially communicated with the gas-water condensing preheater and the first water to water heat exchanger from top to bottom. The washing condensing smoke triple recovery device is used to recover heat energy, moisture in smoke and sulphur nitrogen compounds in smoke.

Description

technical field [0001] The invention relates to a three-recovery device for heat, moisture and sulfur and nitrogen compounds of flue gas. Background technique [0002] my country's energy structure is dominated by coal-burning, and coal-fired flue gas causes a large amount of energy waste and serious environmental pollution. At present, there are about 550,000 coal-fired industrial boilers and kilns in China, and the coal consumption accounts for about the total annual coal consumption in the country. 1 / 3 of. Problems such as high exhaust gas temperature and high concentration of smoke and dust lead to low boiler operation efficiency and insufficient output. Generally speaking, the design thermal efficiency of chain boilers in my country is about 72% to 80%, but the average thermal efficiency in actual operation is only about 60% to 65%, and the thermal efficiency of some boilers is even lower than 50%. How to solve the problem of thermal efficiency directly affects the Ener...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78
CPCY02P70/10
Inventor 张承虎孙德兴严艳秋曾令杰
Owner HARBIN INST OF TECH