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Desulfurizing agent for steelmaking and production process thereof

A desulfurizer and condition technology, applied in other chemical processes, gas treatment, membrane technology, etc., can solve the problems that carbon monoxide cannot be well solved, the desulfurizer cannot be reused, the desulfurizer effect is reduced, etc., to increase its own conductivity. , Increase the number of electrons, the effect of good desulfurization effect

Active Publication Date: 2020-11-03
ZHEJIANG CHENGYU ENVIRONMENTAL PROTECTION NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006]Existing desulfurizers for steelmaking can only remove part of the sulfide in the waste gas during use, and there are still a large amount of sulfide in the waste gas. Moreover, the carbon monoxide in the exhaust gas cannot be well resolved, which makes the exhaust gas treatment effect poor, and the effect of the desulfurization agent is greatly reduced after repeated use, making the desulfurization agent unable to be reused, thereby increasing the cost of desulfurization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A desulfurizer for steelmaking, made of the following raw materials in parts by weight: 20 parts of component A, 10 parts of component B; 1 part of sodium dodecylbenzenesulfonate; 50 parts of deionized water;

[0030] The desulfurizer is made by the following steps:

[0031] Step S1: Add component B, sodium dodecylbenzenesulfonate, and deionized water into the reaction kettle, and stir for 30 minutes at a rotation speed of 300 r / min to obtain a mixed solution;

[0032] Step S2: Add component A to the mixed solution prepared in step S1, stir at a speed of 150r / min for 20min, and perform ultrasonic treatment for 1h at a frequency of 8kHz, then filter to remove the filtrate. The filter cake was roasted for 2 hours at a temperature of 300°C to obtain a desulfurizer.

[0033] Described component A is made by following steps:

[0034] Step A1: Add calcium hydroxide and ethanol to the reaction kettle, stir at a rotation speed of 500r / min and a temperature of 30°C until evenl...

Embodiment 2

[0043] A desulfurizer for steelmaking, made of the following raw materials in parts by weight: 25 parts of component A, 13 parts of component B; 2 parts of sodium dodecylbenzenesulfonate; 60 parts of deionized water;

[0044] The desulfurizer is made by the following steps:

[0045] Step S1: add component B, sodium dodecylbenzenesulfonate, and deionized water into the reaction kettle, and stir for 35 minutes at a rotation speed of 400 r / min to obtain a mixed solution;

[0046] Step S2: Add component A to the mixed solution prepared in step S1, stir at a speed of 180r / min for 25min, and perform ultrasonic treatment for 2h at a frequency of 9kHz, then filter to remove the filtrate. The filter cake was roasted for 3 hours at a temperature of 350°C to obtain a desulfurizer.

[0047] Described component A is made by following steps:

[0048] Step A1: Add calcium hydroxide and ethanol to the reaction kettle, stir at a speed of 600r / min and a temperature of 35°C until they are even...

Embodiment 3

[0057] A desulfurizer for steelmaking, made of the following raw materials in parts by weight: 30 parts of component A, 15 parts of component B; 3 parts of sodium dodecylbenzenesulfonate; 80 parts of deionized water;

[0058] The desulfurizer is made by the following steps:

[0059] Step S1: Add component B, sodium dodecylbenzenesulfonate, and deionized water into the reaction kettle, and stir for 40 minutes at a rotation speed of 500 r / min to obtain a mixed solution;

[0060] Step S2: Add component A to the mixed solution prepared in step S1, stir for 30 minutes at a rotating speed of 200 r / min, and perform ultrasonic treatment for 3 hours at a frequency of 10 kHz, then filter to remove the filtrate, The filter cake was roasted for 3 hours at a temperature of 400°C to obtain a desulfurizer.

[0061] Described component A is made by following steps:

[0062]Step A1: Add calcium hydroxide and ethanol into the reaction kettle, stir at a speed of 800r / min and a temperature of 4...

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Abstract

The invention discloses a desulfurizing agent for steelmaking and a production process thereof. The desulfurizing agent is prepared from the following raw materials in parts by weight: 20-30 parts ofa component A, 10-15 parts of a component B, 1-3 parts of sodium dodecyl benzene sulfonate, and 50-80 parts of deionized water; herein, the component A increases the number of electrons in a ferric ion conduction band on the surface of the component A and increases the conductivity of the component A, so that the surface alkalinity of the component A is enhanced, the adsorption capacity of the component A to sulfide is further improved, and a large amount of cuprous chloride and ferric oxide are dispersed on the surface of the component B, so that the component B can well absorb carbon monoxide generated by steelmaking; therefore, the desulfurizing agent prepared by mixing and roasting the component A and the component B has a good desulfurizing effect and a carbon monoxide removing effect, can be used for multiple times, and greatly reduces the steelmaking waste gas treatment cost.

Description

technical field [0001] The invention belongs to the technical field of metal smelting, and in particular relates to a desulfurizer for steelmaking and a production process thereof. Background technique [0002] With the rapid development of the iron and steel industry, the total amount of converter steelmaking dust as solid waste in the steelmaking process has also increased sharply, which is likely to cause environmental pollution and occupy production space. Therefore, how to recycle and comprehensively utilize waste has become a hot issue in current research. At present, most iron and steel enterprises adopt three main ways to deal with steelmaking dust and ash: adding to sintering material, selling to the outside world and landfilling. However, due to the composition and physical and chemical properties of the dust removal ash, it cannot be well utilized as a resource, and it may even have some adverse effects on the production process. Therefore, it is necessary to fi...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30B01D53/02
CPCB01J20/22B01J20/0244B01J20/0229B01J20/0296B01J20/262B01J20/0222B01J20/04B01J20/10B01J20/20B01J20/0237B01D53/02B01D2257/30B01D2257/502Y02P10/20
Inventor 楼晓刚何国良
Owner ZHEJIANG CHENGYU ENVIRONMENTAL PROTECTION NEW MATERIAL CO LTD
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