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Coal gas purification treatment method of smelting silicomanganese alloy in closed submerged arc furnace and purification system

A silicon-manganese alloy, purification treatment technology, applied in the direction of combustible gas purification, combustible gas purification/transformation, combustion method, etc., can solve the problem of burning out bags, reduce energy loss, increase oxidation rate, and ensure continuity The effect of operation

Inactive Publication Date: 2019-01-25
无锡市华易环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After entering the cloth bag, K and Zn will ignite spontaneously in contact with the air, thus burning the cloth bag. Therefore, a new solution needs to be designed to solve the problem.

Method used

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  • Coal gas purification treatment method of smelting silicomanganese alloy in closed submerged arc furnace and purification system
  • Coal gas purification treatment method of smelting silicomanganese alloy in closed submerged arc furnace and purification system
  • Coal gas purification treatment method of smelting silicomanganese alloy in closed submerged arc furnace and purification system

Examples

Experimental program
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Effect test

Embodiment 1

[0044] A gas purification system for smelting silicon-manganese alloys in a closed submerged arc furnace, as attached figure 2 As shown, it includes a closed submerged arc furnace 1, a high-temperature filter group, a heat exchanger 3, a spray tower 4, a blower 5 and a combustion furnace 6. Wherein the gas outlet of the airtight submerged arc furnace 1 communicates with the high-temperature filtering device group, the heat exchanger 3 , the spray tower 4 , the air blower 5 and the combustion furnace 6 in sequence. And here the high-temperature filtering device group is combined by high-temperature filtering device 1 2a and high-temperature filtering device 2 2b in parallel, so that the mutual switching between the two high-temperature filtering devices can be realized, thereby ensuring the purification of the system as a whole At the same time, it is also convenient for the staff to clean the high-temperature filter device. Here, the number of high-temperature filtering devi...

Embodiment 2

[0050] as attached figure 1 As shown, on the basis of Example 1, the gas purification treatment method for smelting silicon-manganese alloy in a closed submerged arc furnace mainly includes the following steps: Step 1: the gas produced by the closed submerged arc furnace 1 will be collected and entered into the high-temperature filter unit group In the high-temperature filter device-2a, the gas flows along the baffle plate 2b1, and then passes through the filtration of the powder metallurgy porous material 2b2 for many times;

[0051] Step 2: passing the filtered gas into the heat exchanger 3, and exchanging heat with the cooling water, so that the heat of the gas can be recovered by the cooling water;

[0052] Step 3: the heat-exchanged gas will be transported to the spray tower 4, and the gas will be sprayed with lye, and the gas will be irradiated with ultraviolet light at the same time;

[0053] Step 4: After Step 3 is completed, the coal gas is sent into the combustion f...

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Abstract

The invention discloses a coal gas purification treatment method of smelting a silicomanganese alloy in a closed submerged arc furnace, and relates to the field of the gas purification. The method comprises the following steps: S1, recovering a coal gas generated by the closed submerged arc furnace, and filtering by a powder metallurgy porous material; S2, recovering waste heat from the filtered coal gas; S3, spraying the coal gas after waste heat recovery by using alkali liquor; and S4, performing catalytic combustion on the coal gas after spraying. Herein, a cloth bag is replaced by the powder metallurgy porous material, efficiency of coal gas purification is effectively improved, and energy consumption is also reduced. A purification system provided by the invention mainly comprises theclosed submerged arc furnace, and a high-temperature filtering device group, a heat exchanger, a spraying tower, an air blower and a combustion furnace which are successively communicated. The wholestructure is simpler and suitable for popularization and application.

Description

technical field [0001] The invention relates to the field of gas purification, in particular to a gas purification treatment method and a purification system for smelting silicon-manganese alloys in a closed submerged arc furnace. Background technique [0002] The history of bag filtering smelting dust has passed for nearly a hundred years. In order to meet the requirements of high-temperature flue gas, human beings have developed various materials, such as cloth, hemp, glass fiber, etc. And today, the long-term operating temperature of bag filter materials can only be below 250°C, and the instantaneous temperature should not be higher than 300°C. [0003] During the smelting process of the submerged arc furnace, materials will be continuously added, and occasionally there will be a phenomenon of material collapse and fire, which will easily lead to unstable furnace temperature. Moreover, the outlet temperature of the flue gas from the closed furnace often fluctuates betwee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/00C10K1/02C10K1/12F23G7/07
CPCC10K1/003C10K1/024C10K1/12C10K1/124F23G7/07F23G2209/14Y02P20/10Y02P20/129
Inventor 赵志成钱斌
Owner 无锡市华易环境科技有限公司