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Joint detection method and detection system for contents of various components of carbon black tail gas

A joint detection and carbon black technology, which is applied in the direction of measuring devices, analyzing materials, and material analysis through optical means, can solve the problems of poisoning of working electrodes, insufficient versatility of carbon black tail gas, and unfavorable and accurate grasp of carbon black tail gas, etc., to achieve The effect of stable joint detection

Inactive Publication Date: 2019-04-09
SUZHOU BAOHUA CARBON BLACK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 2. Portable instruments for detecting gas content based on the principle of electrochemical methods are not versatile enough for carbon black tail gas (especially CO content exceeding 5%), because the CO content is too high, which has a strong poisoning effect on its working electrode, and the working electrode produces Irreversible change, reducing the life of such equipment;
[0007] 3. The portable instrument for detecting gas content based on the principle of non-dispersive infrared absorption method is suitable for carbon black tail gas with high content of various gas components, but its detection stability is not enough (stable time is less than 3min), during the detection process The content of gas components gradually decreases with time, which is not conducive to accurately grasping the content of each component of carbon black tail gas

Method used

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  • Joint detection method and detection system for contents of various components of carbon black tail gas
  • Joint detection method and detection system for contents of various components of carbon black tail gas

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Effect test

Embodiment 1

[0062] The flue gas absorption module adopts the form of 4 sets of 10% sodium hydroxide absorption liquid connected in series. After absorbing the gas impurities in the carbon black tail gas, the absorbed carbon black tail gas is connected to the flue gas analyzer for analysis. Infrared absorption method was used to detect the components and content of carbon black tail gas.

[0063] Record the data of each component in the carbon black tail gas as follows: O 2 (dry basis, 1.3%), SO 2 (dry basis, 1938mg / Nm 3 ), NOx (dry basis, 1446mg / Nm 3 ), H 2 S (dry basis, 869mg / Nm 3 ), CO 2 (dry basis, 5.9%), CO (dry basis, 12.7%).

Embodiment 2

[0065] The flue gas absorption module adopts the form of two sets of 10% sodium hydroxide absorption liquid connected in series. After absorbing the gas impurities in the carbon black tail gas, the absorbed carbon black tail gas is connected to the flue gas analyzer for analysis. Non-dispersive Infrared absorption method was used to detect the components and content of carbon black tail gas.

[0066] Record the data of each component in the carbon black tail gas as follows: O 2 (dry basis, 0.6%), SO 2 (dry basis, 1183mg / Nm 3 ), NOx (dry basis, 1340mg / Nm 3 ), H 2 S (dry basis, 738mg / Nm 3 ), CO 2 (dry basis, 4.3%), CO (dry basis, 9.7%).

Embodiment 3

[0068] The flue gas absorption module adopts the form of 1 group of 10% sulfuric acid absorption liquid connected in series. After absorbing the gas impurities in the carbon black tail gas, the absorbed carbon black tail gas is connected to the flue gas analyzer for analysis. Non-dispersive infrared absorption The method is used to detect the components and content of carbon black tail gas.

[0069] Record the data of each component in the carbon black tail gas as follows: O 2 (dry basis, 1.4%), SO 2 (dry basis, 1020mg / Nm 3 ), NOx (dry basis, 1035mg / Nm 3 ), H 2 S (dry basis, 760mg / Nm 3 ), CO 2 (dry basis, 6.3%), CO (dry basis, 11.2%).

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Abstract

The invention discloses a joint detection method for the contents of various components of carbon black tail gas. The joint detection method comprises the steps that the carbon black tail gas absorbsgas impurities in the carbon black tail gas through impurity absorption liquid; and the carbon black tail gas absorbing the gas impurities is introduced into a flue gas analyzer, and the components inthe carbon black tail gas and the contents are detected by adopting a non-dispersive infrared absorption method. The invention further discloses a joint detection system for the contents of the various components of the carbon black tail gas. The joint detection system comprises a flue gas absorption module which is used for absorbing the gas impurities in the carbon black tail gas and the flue gas analyzer which is communicated with the flue gas absorption module and used for detecting the components in the carbon black tail gas and the contents by adopting the non-dispersive infrared absorption method. According to the joint detection method and system, quick and stable joint detection on the contents of the various components of the carbon black tai gas can be achieved, the accurate contents of the various gas components in the carbon black tail gas are provided, a data support is provided for a control process for boiler or tail gas furnace pollutant standard emission, atmosphericpollution is prevented and controlled, and then the atmospheric pollution prevention and control requirements made by the State Environmental Protection Administration are met.

Description

technical field [0001] The invention relates to the field of detection of carbon black tail gas, in particular to a joint detection method and detection system for the content of each component of carbon black tail gas. Background technique [0002] Carbon black tail gas is a by-product of the carbon black production process. It is a gaseous by-product obtained from raw material hydrocarbons (liquid hydrocarbons, gaseous hydrocarbons or their mixtures) through incomplete combustion or thermal decomposition. It contains various hydrocarbons. Organic mixture. After dust removal by the bag filter, most of the carbon black tail gas is sent to the incineration boiler for incineration, which is converted into steam and electric energy, and the other small part is sent to the drying drum tail gas combustion furnace for burning for drying carbon black. The waste gas after the above-mentioned production process is discharged to atmosphere. Both boiler flue gas and dry waste gas con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3504
CPCG01N21/3504
Inventor 陈平平毛卫良
Owner SUZHOU BAOHUA CARBON BLACK