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Flue gas comprehensive treatment device and method

A comprehensive treatment and pretreatment device technology, which is applied in the direction of combustion method, combustion product treatment, feed water heater, etc., can solve the problems of increasing steam consumption and energy loss, so as to reduce energy consumption, improve stability and water production , the effect of energy saving utilization

Pending Publication Date: 2018-12-21
浙江巨化热电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve a suitable raw water temperature, the conventional heating method mainly uses auxiliary steam for heating the raw water, which increases steam consumption and energy loss

Method used

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  • Flue gas comprehensive treatment device and method
  • Flue gas comprehensive treatment device and method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0035] A flue gas comprehensive treatment device, including a boiler 1, a tail flue 2, a dust collector 3, an induced draft fan 4, a desulfurization absorption tower 5, a phase-change coalescer 6 and a chimney 7, and the phase-change coalescer 6 is a shell-and-tube structure, It includes a set of U-shaped tube bundle heat exchange tubes 12, a tube sheet 13 and a water collection device 14. The material of the heat exchange tubes 12 is PTFE, and the specification is The center distance of the tube bundle is 30mm. The heat exchange tube 12 is connected with the tube plate 13 by welding technology. The tube plate 13 is sealed with the external metal tube box. The heat exchange tube 12 is arranged on the tube plate 13. 2, the outlet of the tail flue 2 is connected to the inlet of the dust collector 3, the outlet of the dust collector 3 is connected to the inlet of the induced draft fan 4, the outlet of the induced draft fan 4 is connected to the gas phase inlet of the desulfurizat...

Embodiment 2

[0039] A flue gas comprehensive treatment device, including a boiler 1, a tail flue 2, a dust collector 3, an induced draft fan 4, a desulfurization absorption tower 5, a phase-change coalescer 6 and a chimney 7, and the phase-change coalescer 6 is a shell-and-tube structure, It includes two sets of U-shaped tube bundle heat exchange tubes 12, tube sheets 13 and water collection device 14. The material of heat exchange tubes 12 is PTFE, and the specification is The heat exchange tube 12 is connected with the tube plate 13 by welding technology, the tube plate 13 is sealed with the external metal tube box, two sets of U-shaped tube bundle heat exchange tubes are arranged in a row, the center distance of the tube bundle is 28 mm, and the two sets of U-shaped tube bundle heat exchange tubes 12 Both are arranged on the tube plate 13, the flue gas outlet of the boiler 1 is connected to the inlet of the tail flue 2, the outlet of the tail flue 2 is connected to the inlet of the dust...

Embodiment 3

[0043] A flue gas comprehensive treatment device, including a boiler 1, a tail flue 2, a dust collector 3, an induced draft fan 4, a desulfurization absorption tower 5, a phase-change coalescer 6 and a chimney 7, and the phase-change coalescer 6 is a shell-and-tube structure, It includes three sets of U-shaped tube bundle heat exchange tubes 12, tube sheets 13 and water collection device 14. The material of heat exchange tubes 12 is PTFE, and the specification is The heat exchange tube 12 is connected with the tube plate 13 by welding technology, the tube plate 13 is sealed with the external metal tube box, three sets of U-shaped tube bundle heat exchange tubes are arranged in a staggered arrangement, the center distance of the tube bundles is 25mm, and the three sets of U-shaped tube bundle heat exchange tubes 12 are all arranged on the tube plate 13, the flue gas outlet of the boiler 1 is connected with the inlet of the tail flue 2, the outlet of the tail flue 2 is connected...

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Abstract

The invention discloses a flue gas comprehensive treatment device which comprises a boiler, a tail flue, a dust remover, an induced draught fan, a desulfurizing absorption tower, a phase change coagulator and a chimney. The phase change coagulator is provided with a raw water inlet and a raw water outlet. The raw water inlet is connected with a raw water primary treatment device, and the raw wateroutlet is connected with a raw water pretreatment device. A water outlet of the raw water pretreatment device is connected with a water inlet of a demineralized water preparing device, and a water outlet of the demineralized water preparing device is connected with an inlet of a demineralized water tank. The invention further discloses a method for treating flue gas through the comprehensive treatment device. By means of the flue gas comprehensive treatment device and method, the problem that micro particles cannot be removed during electric dust removing is solved, meanwhile, boiler flue gasis utilized more efficiently with more energy saved, the dust removing environment protection effect is achieved, in addition, a low-temperature heat source obtained during flue gas dust removing issecondarily used, raw water of a water treatment device is heated, efficiency of the water treatment device is improved, the energy utilization rate is greatly increased, energy consumption is reduced, flue gas waste heat is cyclically used, and the economic efficiency of a unit is comprehensively improved.

Description

technical field [0001] The invention relates to the technical field of energy saving and environmental protection of coal-fired power stations, in particular to a flue gas comprehensive treatment device and a method thereof. Background technique [0002] At this stage, coal-fired power plants are fully implementing ultra-low emission and energy-saving renovations, greatly reducing coal consumption and pollution emissions for power generation, so as to achieve clean, efficient and information-based development of the power industry, and greatly reduce flue gas pollutant emissions. Domestic dust removal technologies mainly include electric dust removal, bag dust removal, tube-bundle dust collectors, etc., and electric dust collectors have high efficiency, low energy consumption, can handle high-temperature flue gas with a large amount of flue gas, are durable, have low maintenance pressure, and have no Secondary pollution and other advantages have been recognized international...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J15/00F23J15/02F22D1/00
CPCF22D1/00F23J15/006F23J15/022F23J2215/20
Inventor 毛双华姜小栋王浩添
Owner 浙江巨化热电有限公司
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