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Iron complex desulfurizer suitable for super-gravity desulfurization

A technology for complexing iron and desulfurizing agent, applied in the separation of dispersed particles, chemical instruments and methods, separation methods, etc., can solve the problems of low saturated sulfur capacity, poor desulfurization liquid stability, and high operating costs, and achieve high saturated sulfur capacity, Reduced operating costs and easy recycling

Active Publication Date: 2010-11-03
ZHONGBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a complex iron desulfurizer suitable for supergravity desulfurization in order to solve the deficiencies of low saturated sulfur capacity, poor stability of desulfurization liquid and high operating cost in the desulfurization agent in the existing desulfurization process.

Method used

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  • Iron complex desulfurizer suitable for super-gravity desulfurization

Examples

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Effect test

Embodiment 1

[0055] Use the desulfurization liquid of the present invention to treat sulfide containing 1.0-1.5g / m 3 of industrial waste gas (of which, H 2 S content > 96%, others are organic sulfur CS 2 , COS, etc.).

[0056] (1) Composition of desulfurization liquid:

[0057] Total iron: 0.5g / L, of which Fe 3+ The mass ratio to total iron is 0.95

[0058] Sulfosalicylic acid: 1.0g / L

[0059] Tartaric acid: 0.5g / L

[0060] Sodium carbonate: 10g / L

[0061] Diethanolamine: 0.80g / L

[0062] Mixture of sodium p-toluenesulfonate, sodium bisulfite, sucrose and 2,4-dichlorophenol in equal mass ratio: 0.4g / L

[0063] Sodium 2,7-anthraquinone disulfonate: 0.02g / L

[0064] Example e of sulfur particle sedimentation agent: 0.04g / L

[0065] Corrosion inhibitor example d: 0.3g / L

[0066] Adjust the pH value of the desulfurization solution: 8~9

[0067] Rest: water

[0068] The specific configuration method of the desulfurization solution: use water as the solvent, first add soluble iron s...

Embodiment 2

[0078] Use the desulfurization solution of the present invention to treat 2.5-3.0 g / m of sulfide 3 of industrial waste gas (of which, H 2 S content > 91%, others are organic sulfur CS 2 , COS, etc.).

[0079] (1) Composition of desulfurization liquid:

[0080] Total iron: 2.0g / L, of which Fe 3+ The mass ratio to total iron is 0.85

[0081] Lactic acid: 1.0g / L

[0082] Sodium tartrate: 1.5g / L

[0083] Salicylic acid: 1.5g / L

[0084] Sodium carbonate: 20g / L

[0085] Triethanolamine: 0.1g / L

[0086] Mixture of sodium p-toluene disulfonate, disodium hydrogen phosphate, maltose and 2,4-dichlorophenol in equal mass ratio: 1.6g / L

[0087] Sodium 2,6-anthraquinone disulfonate: 0.06g / L

[0088] Sulfur particle sedimentation agent example b: 0.42g / L

[0089] Corrosion inhibitor example c: 1.7g / L

[0090] pH value of desulfurization solution: 8~9

[0091] Rest: water

[0092] The specific configuration method of desulfurization liquid is as mentioned above.

[0093] (2) Th...

Embodiment 3

[0102] Use the desulfurization liquid of the present invention to treat 6.5-7.0 g / m of sulfide 3 of industrial waste gas (of which, H 2 S content > 88%, others are organic sulfur CS 2 , COS, etc.).

[0103] (1) Composition of desulfurization liquid:

[0104] Total iron: 5.5g / L, of which Fe 3+ The mass ratio to total iron is 0.8

[0105] Sulfosalicylic acid: 3.5g / L

[0106] Citric acid: 2.5g / L

[0107] Sodium tartrate: 2.5g / L

[0108] Sodium carbonate: 38g / L

[0109] Triethanolamine: 0.40g / L

[0110] Mixture of sodium p-toluene disulfonate, sodium dihydrogen phosphate, sucrose and 2,4,6-trichlorophenol in equal mass ratio: 2.9g / L

[0111] Sodium 2,7-anthraquinone disulfonate: 0.09g / L

[0112] Sulfur particle sedimentation agent example c: 0.93g / L

[0113] Corrosion inhibitor example b: 2.9g / L

[0114] pH value of desulfurization solution: 8~9

[0115] Rest: water

[0116] The specific configuration method of desulfurization liquid is as mentioned above.

[0117] ...

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Abstract

The invention belongs to the technical field of gas purification, and in particular relates to an iron complex desulfurizer suitable for super-gravity desulfurization. The active ingredients of the iron complex desulfurizer are the following components: a soluble iron salt, an iron salt complexing agent, hydrosulfide absorbants comprising alkaline matters and alcamines, and additives comprising astabilizing agent, a synergist, a sulfur granule settling agent and a corrosion inhibitor. The iron complex desulfurizer has the advantages of large accumulative saturation sulfur capacity (reaching 0.60g / L), high absorption speed, high efficiency, stable solution performance without degradation, easy recovery of sulfur, less side reactions, low running cost and the like; and the accumulative saturation sulfur capacity and the absorption speed are obviously improved, so the iron complex desulfurizer is suitable for the characteristics of small liquid circulating volume and short retention time of the super-gravity desulfurization, fully takes the obvious advantages of the super-gravity technology in the wet desulphurization, and is a high-efficiency, economic, practical and environment-friendly iron complex desulfurizer.

Description

technical field [0001] The invention belongs to the technical field of gas purification, and in particular relates to a complex iron desulfurizer suitable for supergravity desulfurization, which is suitable for the removal of sulfide-containing gases such as natural gas, refinery gas, synthesis gas and industrial waste gas. Background technique [0002] Research on complex iron desulfurizers in the prior art: [0003] 1. The LO-CAT, LO-CAT II complex iron desulfurization process developed by American Air Resources Corporation, and the SulFerox complex iron desulfurization process jointly developed by American Shell Oil and Dow Chemical Company, both of which belong to the EDTA complex iron desulfurization process , this type of process has the advantages of high desulfurization efficiency and less desulfurization liquid circulation, but its desulfurization operation cost is high, and the saturated sulfur capacity of desulfurization liquid is low, only 0.212g / L Conference ma...

Claims

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Application Information

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IPC IPC(8): B01D53/48B01D53/52
Inventor 刘有智于永焦纬洲尚海茹
Owner ZHONGBEI UNIV
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