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Agent and method for treating hydrogen sulfide in coal mine water

A technology of mine water and hydrogen sulfide, applied in the field of coal mine safety

Inactive Publication Date: 2011-12-14
四川省煤炭产业集团有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, domestic and foreign scholars' research on hydrogen sulfide treatment technology mainly focuses on flue gas desulfurization, while the treatment of hydrogen sulfide gas in coal mine water is blank.

Method used

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  • Agent and method for treating hydrogen sulfide in coal mine water
  • Agent and method for treating hydrogen sulfide in coal mine water
  • Agent and method for treating hydrogen sulfide in coal mine water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Prepare an aqueous solution with a hydrogen sulfide concentration of 2600mg / L, and add Fenton's reagent (0.33g / LFeSO 4 ·7H 2 O+0.33mL / LH 2 o 2 ), followed by the addition of fly ash (10g / L) for dosing, using a shaker speed of 160r / min to simulate the disturbance of underground mine water, the test shows that the reaction reaches equilibrium after 6 minutes, and the residual hydrogen sulfide concentration in the water is determined to be 130mg / L L, calculated hydrogen sulfide removal rate reached 95%.

[0017] As a contrast, the hydrogen sulfide aqueous solution configured in the same way was used to measure its concentration, and Fenton's reagent (0.33g / LFeSO 4 ·7H 2 O+0. 33mL / LH 2 o 2 ) and fly ash (10g / L), reacted at a shaking table speed of 160r / min, the test showed that the reaction of Fenton’s reagent reached equilibrium after 6 minutes, and the maximum removal rate of hydrogen sulfide was calculated to be 90%; fly ash The adsorption saturation time is 3 hou...

Embodiment 2

[0019] Embodiment 2: preparation hydrogen sulfide concentration is the aqueous solution of 10000mg / L, according to first adding Fenton's reagent (0.67g / LFeSO 4 ·7H 2 O+0.67mL / LH 2 o 2 ), followed by the addition of fly ash (15g / L) for dosing. A shaker with a rotating speed of 160r / min was used to simulate the disturbance of underground mine water. The test showed that the reaction reached equilibrium after 8 minutes, and the residual hydrogen sulfide concentration in the water was determined to be 125mg / L L, calculated hydrogen sulfide removal rate reached 99%.

[0020] As a contrast, the hydrogen sulfide aqueous solution configured in the same way was used to measure its concentration, and Fenton's reagent (0.67g / LFeSO 4 ·7H 2 O+0.67mL / LH 2 o 2 ) and fly ash (15g / L), reacted at a shaking table speed of 160r / min, the test showed that the Fenton reagent reaction reached equilibrium after 8 minutes, and the maximum removal rate of hydrogen sulfide was calculated to be 92%;...

Embodiment 3

[0022] Embodiment 3: Composite agent treats the effect of hydrogen sulfide in water

[0023] To prepare an aqueous solution with a hydrogen sulfide concentration of 140000 mg / L, add Fenton's reagent (0.67g / LFeSO 4 ·7H 2 O+0.67mL / LH 2 o 2 ), followed by the addition of fly ash (20g / L) for dosing. A shaker with a rotating speed of 160r / min was used to simulate the disturbance of underground mine water. The test showed that the reaction reached equilibrium after 10 minutes, and the residual hydrogen sulfide concentration in the water was determined to be 136mg / L L, calculated hydrogen sulfide removal rate reached 99.9%.

[0024] As a control, use the hydrogen sulfide aqueous solution configured in the same way to measure its concentration, and add Fenton's reagent (1g / LFeSO 4 ·7H 2 O+1mL / LH 2 o 2 ) and fly ash (20g / L), reacted at a shaking table speed of 160r / min, the test showed that the reaction of Fenton’s reagent reached equilibrium after 10 minutes, and the maximum re...

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Abstract

The invention relates to a compound agent for treating hydrogen sulfide gas in high-sulfur coal mine water, belonging to the field of coal mine safety. The compound agent is composed of two agents, type A and type B, wherein the agent of type A is Fenton’s reagent, and the agent of type B is fly ash. Each treatment 1m3 contains hydrogen sulfide 2g / m3~140g / m3 of water, and the addition of type A agent The dosage is 0.33kg / m3~1kg / m3FeSO4·7H2O+0.33L / m3~1L / m3H2O2, and the dosage of Type B agent is 10kg / m3~20kg / m3, which can effectively control the escape of hydrogen sulfide gas in mine water. The escape concentration is within the range of 6.6ppm, the safety standard stipulated by the state, that is, the concentration of hydrogen sulfide in the water is controlled below 136.6mg / L. The medicament selected by the invention has the characteristics of environmental protection, low treatment cost, obvious effect, and the characteristics of simplicity, quickness and high efficiency.

Description

technical field [0001] The invention belongs to the field of coal mine safety, and relates to a medicament capable of treating hydrogen sulfide in water and its application in high-sulfur coal mine water treatment, so as to ensure safe production in coal mines. Background technique [0002] During the mining of coal mines, especially high-sulfur coal mines, a large amount of hydrogen sulfide (H 2 S) gas, H 2 S is a highly toxic flammable gas, colorless, with the smell of rotten eggs, its density is 1.19 times that of air, it is easily soluble in water to form hydrogen sulfuric acid, and its solubility in water is CO 2 2.7 times of CH 4 93 times more. Hydrogen sulfide is an irritating gas, an asphyxiating gas, and a corrosive gas. When the concentration of hydrogen sulfide is 0.4 mg / m3, people can clearly smell the odor of hydrogen sulfide; when the concentration is 70-150 mg / m3, olfactory fatigue will occur within a few minutes after inhalation, and the odor will not be...

Claims

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Application Information

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IPC IPC(8): C02F1/72C02F1/28
Inventor 林海王亚楠陈月芳韦威王寿全余玉江
Owner 四川省煤炭产业集团有限责任公司
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