Boiler smoke waste heat utilization and white smoke removal integrated system

A boiler flue gas and flue gas waste heat technology, which is applied to lighting and heating equipment, indirect carbon dioxide emission reduction, steam engine installations, etc., can solve the problem of high energy consumption for boiler exhaust smoke removal, and achieve reduced investment, system investment, and system simple effect

Inactive Publication Date: 2019-05-24
DATANG BEIJING ENERGY MANAGEMENT +2
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  • Abstract
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  • Application Information

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Problems solved by technology

The existing flue gas dewhitening and waste heat utilization systems are independen

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  • Boiler smoke waste heat utilization and white smoke removal integrated system

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[0017] Attached below figure 1 To further describe the present invention, it should be understood that the content described here is only used to illustrate and explain the present invention, not to limit the present invention.

[0018] The present invention is based on the basic principle of "temperature matching and cascade utilization", coupling the flue gas de-whitening system with the flue gas waste heat utilization system, and realizes the cascade utilization of energy through the coupling of material flow and energy flow between the systems. Matching the temperature difference effectively reduces the system investment, thus realizing the coordinated work of system energy saving and whitening.

[0019] A coal-fired power station boiler flue gas waste heat utilization and de-whitening integrated system, which includes a conventional coal-fired power generation system. The conventional coal-fired power generation system consists of a boiler (1), an air preheater (2), and a dust...

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Abstract

The invention provides a boiler smoke waste heat utilization and white smoke removal integrated system. The boiler smoke waste heat utilization and white smoke removal integrated system comprises a smoke waste heat absorbing unit which is mounted on a smoke passageway and provided with a plurality of subunits; the multiple subunits are arranged on the smoke passageway in sequence, smoke waste heatis exchanged and recovered in a cascade mode through the multiple subunits, and heat energy of the waste heat at different temperatures is obtained; and a smoke waste heat utilization unit and the smoke waste heat absorbing unit are connected through a heat circulation pipeline, the smoke waste heat utilization unit is provided with a plurality of subunits, and the different subunits utilize theheat energy of the waste heat at the different temperatures to heat water, air and discharged smoke in a power station water system, an air system and a smoke system. Cascade utilization of the energyis achieved, and energy saving, water saving and white smoke removal can be simultaneously achieved.

Description

Technical field [0001] The invention belongs to the energy-saving field of waste heat recovery of waste steam in power plants, and specifically relates to an integrated system for waste heat utilization and de-whitening of flue gas from coal-fired power plant boilers. Background technique [0002] Many regions in my country have issued relevant regulations on flue gas bleaching, and it is imperative to bleach the exhaust gas of coal-fired boilers. Realizing the flue gas bleaching of coal-fired power stations and the energy-saving of flue gas waste heat recovery are the key to urgent solutions in my country’s power industry problem. [0003] The main technologies of flue gas de-whitening include: flue gas heating and de-whitening, flue gas condensation and de-whitening, and flue gas cooling and reheating. The existing flue gas de-whitening technology is mostly flue gas temperature-rising and de-whitening technology. The flue gas temperature is heated to 90-100°C, causing a lot of en...

Claims

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Application Information

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IPC IPC(8): F23L15/00F23J15/02F23J15/06F23J15/08F01K11/02F01K27/00
CPCY02E20/34
Inventor 张国柱张钧泰李本锋张晓明江澄宇刘忠秋刘明
Owner DATANG BEIJING ENERGY MANAGEMENT
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