Flue gas heat exchange mist eliminators for oxy-fuel combustion systems
A flue gas heat exchange and oxygen-enriched combustion technology, which is applied in the direction of combustion technology mitigation, greenhouse gas reduction, climate sustainability, etc., can solve problems such as flue gas pipeline corrosion and impact on equipment service life
Active Publication Date: 2022-07-29
CHINA SHENHUA ENERGY CO LTD +1
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Problems solved by technology
[0003] However, since pulverized coal combustion usually produces a large amount of moisture, the recirculated flue gas in the oxy-fuel combustion system will also be continuously enriched during the circulation process, which may cause corrosion to the flue gas pipeline and affect the use of equipment life
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[0025] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0026] The technical solutions provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.
[0027] As mentioned above, since the combustion of pulverized coal usually produces a large amount of moisture, the recirculated flue gas in the oxy-fuel combustion ...
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The present application discloses a flue gas heat exchange mist eliminator for use in an oxy-fuel combustion system. The flue gas heat exchange mist eliminator includes: a flue gas cooler, a mist eliminator and a flue gas heater, wherein: the flue gas cooler includes a high temperature flue gas inlet; the flue gas outlet of the flue gas cooler is connected to The smoke inlet of the mist eliminator is connected; the smoke outlet of the mist eliminator is connected with the smoke inlet of the smoke heater. After the high temperature flue gas is cooled by the flue gas cooler, the mist eliminator in the flue gas heat exchange mist eliminator can be used to remove the water mist, and then the flue gas after removing the water mist can be reheated by the flue gas heater. Therefore, when used in an oxygen-enriched combustion system, the flue gas heat exchange mist eliminator can be used to remove moisture in the recirculated flue gas, thereby solving the problems in the prior art.
Description
technical field [0001] The present application relates to the technical field of coal combustion, and in particular, to a flue gas heat exchange mist eliminator used in an oxygen-enriched combustion system. Background technique [0002] Oxygen-enriched combustion system as a new pulverized coal combustion and CO 2 Capture technology that produces high concentrations of oxygen through an air separation oxygen generator combined with recirculated flue gas (containing CO 2 ) to replace air to promote combustion, resulting in a high concentration of CO in the final flue gas 2 gas to facilitate CO 2 recycling. [0003] However, since the combustion of pulverized coal usually produces a large amount of moisture, the recirculated flue gas in the oxy-fuel combustion system will also be continuously enriched with the circulation process, which may cause corrosion to the flue gas pipes, etc., affecting the use of the equipment. life. SUMMARY OF THE INVENTION [0004] The flue g...
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IPC IPC(8): F23J15/06F23J15/08B01D53/26
CPCF23J15/06F23J15/08B01D53/26F23J2900/15081Y02E20/30
Inventor 刘毅叶云云肖海平李易炜刘秋生
Owner CHINA SHENHUA ENERGY CO LTD