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Desulfurization device and desulfurization method for cooperatively treating boiler flue gas and sulfuric acid tail gas

A technology for sulfuric acid tail gas and boiler flue gas, applied in the field of desulfurization, can solve the problems of poor economic benefit and high cost of sulfuric acid products

Pending Publication Date: 2020-08-14
江西心连心化学工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a desulfurization device and desulfurization method for synergistically treating boiler flue gas and sulfuric acid tail gas, which solves the problem of environmental protection if the sulfuric acid tail gas is not treated, and the high cost of treatment causes the economic benefits of sulfuric acid products bad question

Method used

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  • Desulfurization device and desulfurization method for cooperatively treating boiler flue gas and sulfuric acid tail gas
  • Desulfurization device and desulfurization method for cooperatively treating boiler flue gas and sulfuric acid tail gas

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Embodiment 1

[0055] A desulfurization device for co-processing boiler flue gas and sulfuric acid tail gas, the device includes: at least one set of boiler tail gas system and a desulfurization system for boiler tail gas desulfurization; at least one set for H 2 A sulfuric acid production device for preparing sulfuric acid from S gas; the boiler tail gas system includes a boiler 1, and the tail gas pipeline of the boiler 1 is connected with the first pressure gauge 4; Gas port, the top gas outlet of the desulfurization tower 5 is provided with a first online analyzer 18, the inner upper part of the desulfurization tower 5 is provided with a first packing layer 48, and the first pressure layer 48 is provided between the upper and lower sides of the first packing layer 48. Difference table 28, the first upper flushing water spraying device 41 and the first lower flushing water spraying device 43, the bottom of the first lower flushing water spraying device 43 is provided with a first flushing ...

Embodiment 2

[0065] A desulfurization device for co-processing boiler flue gas and sulfuric acid tail gas, the device includes: at least one set of boiler tail gas system and a desulfurization system for boiler tail gas desulfurization; at least one set for H 2 A sulfuric acid production device for preparing sulfuric acid from S gas; the boiler tail gas system includes a boiler 1, and the tail gas pipeline of the boiler 1 is connected with the first pressure gauge 4; Gas port, the top gas outlet of the desulfurization tower 5 is provided with a first online analyzer 18, the inner upper part of the desulfurization tower 5 is provided with a first packing layer 48, and the first pressure layer 48 is provided between the upper and lower sides of the first packing layer 48. Difference table 28, the first upper flushing water spraying device 41 and the first lower flushing water spraying device 43, the bottom of the first lower flushing water spraying device 43 is provided with a first flushing ...

Embodiment 3

[0075] A desulfurization device for co-processing boiler flue gas and sulfuric acid tail gas, the device includes: at least one set of boiler tail gas system and a desulfurization system for boiler tail gas desulfurization; at least one set for H 2 A sulfuric acid production device for preparing sulfuric acid from S gas; the boiler tail gas system includes a boiler 1, and the tail gas pipeline of the boiler 1 is connected with the first pressure gauge 4; Gas port, the top gas outlet of the desulfurization tower 5 is provided with a first online analyzer 18, the inner upper part of the desulfurization tower 5 is provided with a first packing layer 48, and the first pressure layer 48 is provided between the upper and lower sides of the first packing layer 48. Difference table 28, the first upper flushing water spraying device 41 and the first lower flushing water spraying device 43, the bottom of the first lower flushing water spraying device 43 is provided with a first flushing ...

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Abstract

The invention belongs to a desulfurization device and a desulfurization method for cooperatively treating boiler flue gas and sulfuric acid tail gas. The device comprises a boiler tail gas system, a desulfurization system and a sulfuric acid production device, wherein the boiler tail gas system comprises a boiler; a tail gas pipeline of the boiler is connected with a first pressure gauge; the desulfurization system comprises a gas inlet in the middle lower part of a desulfurization tower; a first online analyzer is arranged at a top gas outlet of the desulfurization tower; a first packing layer is arranged at the upper part in the desulfurization tower; a first differential pressure gauge, a first upper flushing water spraying device and a first lower flushing water spraying device are arranged between the upper side and the lower side of the first packing layer; and a first flushing water recovery device is arranged at the bottom of the first lower flushing water spraying device; an outlet of an acid mist catcher of the sulfuric acid production device is connected with the gas inlet in the middle lower part of the desulfurization tower through a sulfuric acid tail gas pressure gauge, a pollutant detector and a first sulfuric acid tail gas supply valve. The desulfurization device and the desulfurization method have the characteristics of reasonable process design, low early investment, low power energy consumption, high desulfurization efficiency, good desulfurization effect and environmental friendliness.

Description

technical field [0001] The invention belongs to the technical field of desulfurization, in particular to a desulfurization device and a desulfurization method for co-processing boiler flue gas and sulfuric acid tail gas. Background technique [0002] In the field of coal chemical industry, the sulfuric acid plant burns the low-temperature methanol-washed acid gas, and the H in the gas 2 S reacts to generate sulfuric acid product, but the device produces SO in the tail gas 2 The concentration is about 700mg / m³, which is much higher than the SO in GB31570-2015 "Petroleum Refining Industry Pollutant Discharge Standard". 2 ≤100mg / m³, it is necessary to set up or install a desulfurization device to reduce the SO in the tail gas 2 Removal is carried out to meet the requirements of emission standards and reduce the impact on the surrounding environment. If a tail gas treatment system is added to the sulfuric acid plant alone, a large amount of desulfurization equipment purchase ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/50C01B17/80F23J15/02
CPCB01D53/50B01D2258/0283C01B17/80F23J15/02
Inventor 刘欣林其聪郭科伟刘磊王长胜杨国洞刘伟崔玉彪付梦琳龚普勤
Owner 江西心连心化学工业有限公司