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Boiler feed water deoxidizing system and method
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A boiler feed water and deaerator technology, applied in separation methods, feed water heaters, chemical instruments and methods, etc., can solve the problems of unstable effect, poor deaeration effect, damage to boilers and steam pipelines, etc., and achieve increased power generation. , the effect of saving water costs and saving chemical costs
Pending Publication Date: 2020-03-20
CHINA GREAT WALL ENVIRONMENT IMPROVING CO LTD
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[0005] In order to solve the poor deoxygenation effect of the deaerator used alone in the above-mentioned prior art, and the addition of chemical assisted deaeration agent residues for vacuum deaeration plus chemical assisted deaeration has certain harm to steam turbines, boilers and steam pipelines, and the effect is not good. Stability problem, the present invention provides a boiler feed water deaeration system and method
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[0036] Such as figure 1 and 2As shown, a boiler feed water deaeration system includes a deaerator and a desalinated water tank 6. The deaerator is in an inverted "T" shape, and the upper part of the deaerator is a deaeration tower 1, and the internal structure of the deaeration tower 1 is In the prior art, the lower part of the deaerator is a deaeration water tank 2 and a deaeration water jet tank 3, the deaeration water tank 2 and a deaeration water jet tank 2 are separated by a partition 4, and the deaeration tower 1 communicates with the deaeration water tank 2, The lower part of the deaeration water tank is provided with a deaeration water outlet 201; the top of the deaeration tower 1 is provided with an exhaust port I 101, the body of the deaeration tower 1 is provided with a water inlet 102 to be deaerated, and the top of the deaeration jet tank 3 is provided with a water return port 301 and Deoxygenation jet water inlet 302, deoxygenation jet water outlet 303 is provid...
experiment example 1
[0045] A method for deoxidizing boiler feed water based on the above-mentioned deaeration system, comprising the following steps:
[0046] (1) Heat the temperature of the deaeration water tank to 40°C;
[0047] (2) Turn on the water pump I and the water injector, vacuumize the deaeration water tank, and set the vacuum degree to -80Pa;
[0048] (3) Turn on the water pump Ⅱ, and the water pump Ⅱ pumps the desalted water in the desalinated water tank into the deoxygenated water jet tank, mixes it with the high-temperature water in the deoxygenated water jet tank, reduces the water temperature of the deoxygenated water jet tank, and the deoxygenated water jet tank keeps draining water To the desalinated water tank, adjust until the water level is balanced, and continue to circulate.
experiment example 2
[0050] A method for deoxidizing boiler feed water based on the above-mentioned deaeration system, comprising the following steps:
[0051] (1) Heat the temperature of the deaeration water tank to 45°C;
[0052] (2) Turn on the water pump I and the water injector, vacuumize the deaeration water tank, and set the vacuum degree to -80Pa;
[0053] (3) Turn on the water pump Ⅱ, and the water pump Ⅱ pumps the desalted water in the desalinated water tank into the deoxygenated water jet tank, mixes it with the high-temperature water in the deoxygenated water jet tank, reduces the water temperature of the deoxygenated water jet tank, and the deoxygenated water jet tank keeps draining water To the desalinated water tank, adjust until the water level is balanced, and continue to circulate.
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Abstract
The invention discloses a boiler feed water deoxidizing system and method. The system comprises a deaerator and a desalted water tank, wherein a deoxidizing tower is arranged at the upper part of thedeaerator; a deoxidizing water tank and a deoxidizing water jetting tank are arranged at the lower part of the deaerator; the deoxidizing tower is communicated with the deoxidizing water tank; an exhaust port I is formed in the top of the deoxidizing tower; a deoxidizing water jetting inlet is formed in the top of the deoxidizing water jetting tank; a deoxidizing water jetting outlet is formed inthe bottom of the deoxidizing water jetting tank; an overflow port is formed in the middle of the deoxidizing water jetting tank; a water ejector is arranged above the deoxidizing water jetting tank;the exhaust port I is connected with the air inlet of the water ejector; the desalted water tank is provided with a desalted water inlet and a desalted water outlet; the desalted water inlet is connected with the overflow port in the deoxidizing water jetting tank through a pipeline; and the desalted water outlet is connected with the deoxidizing water jetting inlet through a pipeline. A chemicalauxiliary deoxidizing system is omitted, the circulating water tank of the desalted water tank is additionally arranged, corrosion of chemical auxiliary deoxidizing added agents to equipment is avoided, and maintenance of the equipment is facilitated.
Description
technical field [0001] The invention belongs to the field of boiler feed water treatment, and in particular relates to a boiler feed water deoxygenation system and method. Background technique [0002] In the boiler feed water treatment process, oxygen removal is a very critical link. Oxygen is the main corrosive substance in the water supply system and the boiler. Oxygen in the water supply should be removed quickly, otherwise it will corrode the water supply system and components of the boiler, and the corrosion product iron oxide will enter the pot, deposit or adhere to the boiler tube wall and heat On the surface, iron scale that is insoluble and poor in heat transfer is formed, and corrosion will cause pits on the inner wall of the pipeline, and the resistance coefficient will increase. When the pipeline corrosion is serious, even pipeline explosion accidents may occur. The state stipulates that steam boilers with an evaporation capacity greater than or equal to 2 ton...
Claims
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): F22D1/50C02F1/20C02F1/02C02F103/02
CPCF22D1/50C02F1/20C02F1/02C02F2103/02
Inventor 彭红林
Owner CHINA GREAT WALL ENVIRONMENT IMPROVING CO LTD
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