Flue gas desulfurization absorption system and process

An absorption system and flue gas technology, applied in the field of desulfurization, can solve the problems of lowering temperature, reducing energy consumption for analysis, and high concentration of sulfur dioxide emission at the flue gas outlet

Pending Publication Date: 2021-05-04
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The Chinese patent document with the patent number CN104587820A discloses a desulfurization solution negative pressure desorption process. The negative pressure desorption process uses a decompression device to evacuate the desorption tower into a negative pressure, so as to realize the negative pressure analysis of the rich liquid and reduce the temperature for the analysis of the rich liquid. , so as to reduce the energy consumption of desorption, and reduce the escape loss caused by the acid gas entrainment of the desulfurization solution during the regeneration desorption process, but the process brings the disadvantage of high sulfur dioxide emission concentration at the flue gas outlet

Method used

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  • Flue gas desulfurization absorption system and process

Examples

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Effect test

Embodiment 1

[0065] The sintering flue gas of an iron and steel enterprise, the flue gas volume is 50×10 4 m 3 / h, flue gas inlet SO 2 The concentration is 5200mg / m 3 , the flue gas temperature is 120°C, and the dust content is 20mg / m 3 , the flue gas humidity is 8%, the flue gas temperature after the flue gas is washed by washing water is 49°C, the temperature of the desulfurizer entering the desulfurization tower is 47°C, and the circulation volume of the desulfurizer is 252m 3 / h of flue gas desulfurizer reverse contact reaction, after reacting with flue gas desulfurizer, the flue gas temperature is 55°C, the opening degree of the flue gas rotating acceleration device is 60%, the flue gas velocity is 7m / s, and the flue gas enters the flue gas cooling The flue gas humidity in the section is 13.8%, and the flue gas desulfurizer content in the flue gas humidity is 0.002%. After the flue gas is cooled by the flue gas cooling section, the flue gas temperature is 46°C, and the flue gas hum...

Embodiment 2

[0067] The sintering flue gas of an iron and steel enterprise, the flue gas volume is 50×10 4 m 3 / h, flue gas inlet SO 2 The concentration is 5200mg / m 3 , the flue gas temperature is 120°C, and the dust content is 20mg / m 3 , the flue gas humidity is 10.5%, the flue gas temperature after the flue gas is washed with washing water is 49°C, the temperature of the desulfurizer entering the desulfurization tower is 47°C, and the circulation volume of the desulfurizer is 252m 3 / h flue gas desulfurizer reverse contact reaction, after reacting with flue gas desulfurizer, the flue gas temperature is 55°C, the flue gas rotation acceleration device opening is 50%, the flue gas velocity is 8m / s, and the flue gas enters the flue gas cooling The flue gas humidity in the section is 13.8%, and the flue gas desulfurizer content in the flue gas humidity is 0.001%. After the flue gas is cooled by the flue gas cooling section, the flue gas temperature is 46°C, and the flue gas humidity is 8.4...

Embodiment 3

[0069] The sintering flue gas of an iron and steel enterprise, the flue gas volume is 50×10 4 m 3 / h, flue gas inlet SO 2 The concentration is 5200mg / m 3 , the flue gas temperature is 120°C, and the dust content is 20mg / m 3, the flue gas humidity is 10.5%, the flue gas temperature after the flue gas is washed by washing water is 49°C, the temperature of the desulfurizer entering the desulfurization tower is 47°C, and the circulation volume of the desulfurizer is 252m 3 / h flue gas desulfurizer reverse contact reaction, after reacting with flue gas desulfurizer, the temperature of the flue gas is 55°C, the opening of the flue gas rotating acceleration device is 85%, the speed of the flue gas is 5m / s, and the flue gas enters the flue gas cooling The flue gas humidity in the section is 13.8%, and the flue gas desulfurizer content in the flue gas humidity is 0.021%. After the flue gas is cooled by the flue gas cooling section, the flue gas temperature is 46°C, and the flue gas ...

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Abstract

The invention provides a flue gas desulfurization absorption system and process. The system comprises a desulfurization tower, the desulfurization tower comprises a flue gas washing section, a flue gas desulfurization section, a desulfurization liquid trapping section, a flue gas cooling section, a demisting section and a flue gas heating section which are arranged in sequence from bottom to top; the desulfurization liquid trapping section comprises a silk screen filler layer, a liquid breaking disc, a gas rising cap, a flue gas rotation accelerating device, a high-pressure spraying device and a baffle plate which are sequentially arranged from bottom to top; a gas lifting hole is formed in the flue gas rotation accelerating device, and flue gas is accelerated after passing through the gas lifting hole; and the opening degree of the gas rising hole is larger than or equal to 25% and smaller than 100%. According to the invention, the desulfurization liquid trapping section is arranged, so that a desulfurization agent entrained in the flue gas can be effectively trapped and recovered, and the escape of the desulfurization solution and the secondary pollution caused by the escape are reduced.

Description

technical field [0001] The invention belongs to the technical field of desulfurization, and in particular relates to a flue gas desulfurization absorption system and a process thereof. Background technique [0002] Organic amine flue gas desulfurization technology is a relatively common desulfurization technology currently used. It uses organic amines as desulfurizers to absorb SO in the flue gas in a circular manner. 2 And it is made into sulfuric acid, which is a truly efficient and green flue gas desulfurization technology. This process technology has engineering applications in the fields of sintering flue gas desulfurization, non-ferrous smelting flue gas desulfurization, and sulfuric acid tail gas. [0003] The traditional organic amine method or ionic liquid flue gas desulfurization technology mainly includes flue gas washing system, desulfurization absorption system, desulfurization solution regeneration system, and solution purification and impurity removal system. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/18B01D53/14F28C1/02F28F25/02F28F25/08
CPCB01D53/1425B01D53/1481B01D53/1493B01D53/18B01D2258/0283F28C1/02F28F25/02F28F25/08F28F2025/005
Inventor 邱正秋张小龙王建山刘鹏举
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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