Method and device for removing hydrogen sulfide through steel slag

A technology of hydrogen sulfide and steel slag, which is applied in the field of hydrogen sulfide removal and hydrogen sulfide removal by using steel slag, which can solve the problems of complexity, pollution of the environment, and many device control units, and achieve the effects of high annual output, uniform contact, and complete reaction

Inactive Publication Date: 2013-11-06
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there is following shortcoming in this patent: there are too many device control units, comparatively complicated
A large amount of steel slag discharged during the steelmaking process not only occupies a large amount of land resources, but also pollutes the environment. In order to adapt to the rapid development of the steel industry, the comprehensive utilization of steel slag has also been developed accordingly. At present, steel slag is mainly used in metallurgical industry, road construction, In terms of building materials, agricultural fertilizers and acidic soil improvers, the utilization rate is only 10%, which is far below the level of developed countries. In recent years, the environmental protection value of steel slag has been paid more and more attention. There is no report in the related technical field

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  • Method and device for removing hydrogen sulfide through steel slag
  • Method and device for removing hydrogen sulfide through steel slag

Examples

Experimental program
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Effect test

Embodiment 1

[0046] A device for removing hydrogen sulfide from steel slag, the structure of which is as follows figure 1 As shown, it includes a nitrogen storage tank, a gas storage tank 2 to be treated, a reaction bed, a flue gas analyzer 8 and a mixed gas temporary storage tank 6, and hydrogen sulfide gas or gas containing hydrogen sulfide is housed in the gas storage tank to be treated. The nitrogen storage tank 1 and the gas storage tank 2 to be treated are all communicated with the mixed gas temporary storage tank 6 through pipelines, and the mixed gas temporary storage tank 6 is communicated with the reaction bed through the connecting pipe 10, and the reaction bed is sand The core funnel 7, the connecting pipe 10 is connected to the bottom of the sand core funnel 7, the bottom of the sand core funnel 7 is provided with a water bath for heating the sand core funnel 7, and the top of the sand core funnel 7 is provided with a seal for sealing the sand core funnel Rubber plug, a connec...

Embodiment 2

[0049] Utilize the device described in embodiment 1 to carry out the method for removing hydrogen sulfide, comprise steps as follows:

[0050] 1. Dry the steel slag so that the water content of the steel slag is controlled at 0wt%, then pulverize and pass through a 20-mesh sieve to make steel slag powder. Take 0.5g of steel slag powder and place it evenly on the sand core filter plate of the sand core funnel. The steel slag powder The tile thickness is 2cm;

[0051] 2. Heat the reaction bed to 30°C in a water bath and keep it at a constant temperature;

[0052] 3. At the same time, open the control valve between the nitrogen storage tank and the mixed gas temporary storage tank and the control valve between the gas storage tank to be treated and the mixed gas temporary storage tank to control the gas flow rate, observe the flow display instrument, adjust the flow rate, hydrogen sulfide The gas and nitrogen are passed into the mixed gas temporary storage tank 6, and mixed even...

Embodiment 3

[0059] Utilize the device described in embodiment 1 to carry out the method for removing hydrogen sulfide, comprise steps as follows:

[0060] 1. The steel slag is dried so that the water content of the steel slag is controlled at 5wt%, then pulverized and passed through a 40-mesh sieve to make a steel slag powder. Take 1g of the steel slag powder and place it evenly on the sand core filter plate of the sand core funnel. The paving thickness is 3cm;

[0061] 2. Heat the reaction bed to 40°C in a water bath and keep it at a constant temperature;

[0062] 3. At the same time, open the control valve between the nitrogen storage tank and the mixed gas temporary storage tank and the control valve between the gas storage tank to be treated and the mixed gas temporary storage tank to control the gas flow rate, observe the flow display instrument, adjust the flow rate, hydrogen sulfide The gas and nitrogen are passed into the mixed gas temporary storage tank 6, and mixed evenly in th...

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Abstract

The invention relates to a method for removing hydrogen sulfide through steel slag. The method includes that steel slag is dried and crushed and then is filled in a reaction bed, the reaction bed is heated to be at 30-50 DEG C and then is kept at constant temperature; mixed gases are filled from the bottom of the reaction bed at 80-100 SCCM constant speed, tail gases generated after reaction are discharged from the top of the reaction bed and filled into a flue gas analyzer; when the flue gas analyzer detects that the tail gases contain hydrogen sulfide, the tail gases discharged from a gas outlet of the flue gas analyzer are filled into alkaline liquor, and when the flue gas analyzer detects that concentration of hydrogen sulfide reaches 10-20mg/m<3>, filling of mixed gases is stopped. According to the method, waste steel slag serves as treating agents, the two reactants are wide in sources and large in harm, and reactions of the two reactants can remove stink and solve the problem of environment pollution caused by steel slag; the hydrogen sulfide removing efficiency is high, the industrial wastes, namely steel slag, can be recycled, and the bidirectional effect of using waste to treat waste is achieved; the treated steel slag can be used as building materials and ecological risks and secondary pollution are avoided.

Description

technical field [0001] The invention relates to a method for removing hydrogen sulfide, in particular to a method for removing hydrogen sulfide by using steel slag, and belongs to the technical field of environmental protection. Background technique [0002] Hydrogen sulfide is a colorless gas. Low concentration hydrogen sulfide has a strong odor of rotten eggs. Hydrogen sulfide will be produced in natural gas purification, petroleum refining, coal chemical industry, municipal sewage treatment projects and sludge treatment and disposal. Gas (H 2 S), its content is relatively high compared with other components, its toxicity is strong, its odor threshold is low, and its pollutant discharge standard index value is low. The malodorous gas produced by it has caused a lot of secondary pollution and seriously affected the surrounding atmospheric environment. Malodorous gas not only strongly stimulates the sense of smell and makes people uncomfortable; it also has a certain degre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/81B01D53/52
Inventor 岳敏林聪孙艳秋杨文心岳钦艳徐世平
Owner SHANDONG UNIV
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