CN213113235U - Organic sulfur removing equipment for blast furnace gas - Google Patents
Organic sulfur removing equipment for blast furnace gas Download PDFInfo
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- CN213113235U CN213113235U CN202021330235.4U CN202021330235U CN213113235U CN 213113235 U CN213113235 U CN 213113235U CN 202021330235 U CN202021330235 U CN 202021330235U CN 213113235 U CN213113235 U CN 213113235U
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Abstract
The utility model provides a be used for gaseous organic sulphur equipment of deviating from of blast furnace gas, its characterized in that: the catalytic decomposition tower is provided with an air inlet, the spray tower is provided with an air outlet, the catalytic decomposition tower and the spray tower are communicated through an air conveying pipe, a packing layer is arranged in the catalytic decomposition tower, and a spray layer is arranged in the spray tower. Blast furnace gas enters a catalytic decomposition tower through an air inlet, is subjected to low-temperature catalytic decomposition by a filler in the catalytic decomposition tower, organic sulfur insoluble in water is decomposed into inorganic sulfur in the gas, enters a spray tower along with flue gas through a gas conveying pipe, a spray layer sprays alkaline solution to the gas to achieve the purpose of removing the inorganic sulfur, finally, the desulfurized blast furnace gas flows into a combustion device through an air outlet to be combusted, the combusted gas does not contain sulfur dioxide, and the gas is directly discharged. The blast furnace gas does not generate sulfur dioxide in the combustion process, and the atmospheric pollution is reduced by treating at the source.
Description
Technical Field
The utility model relates to a sweetener technical field.
In particular to an organic sulfur removing device for blast furnace gas.
Background
Blast furnace gas is a byproduct combustible gas in the blast furnace ironmaking production process. Its composition is mainly composed of carbon dioxide 6-12%, carbon monoxide 28-33%, hydrogen 1-4%, nitrogen 55-60%, hydrocarbon 0.2-0.5% and small quantity of organic sulfur. Organic sulfur is a sulfur-containing compound, which is stably combined with heavy metal ions through sulfur group and undergoes chemical reaction to form a stable organic metal compound which is not easy to dissolve, and sulfur dioxide and sulfur trioxide can be generated in the combustion process to pollute the environment.
The conventional process for removing the organic sulfur in the blast furnace gas does not comprise a removal process, only sulfur dioxide is generated after the blast furnace gas is combusted, the sulfur dioxide is removed by a wet desulphurization process, the volume of the gas is increased due to the participation of oxygen in the air in the combustion process, large desulphurization equipment needs to be constructed in the desulphurization process, and high investment and high operating cost are caused due to large type selection of various equipment.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the weak point of above-mentioned conventional art, to the not enough of prior art, provide a be used for gaseous organic sulphur equipment that deviates from of blast furnace gas.
The purpose of the utility model is achieved through the following technical measures: an organic sulfur removing device for blast furnace gas is characterized in that: the catalytic decomposition tower is provided with an air inlet, the spray tower is provided with an air outlet, the catalytic decomposition tower and the spray tower are communicated through an air conveying pipe, a packing layer is arranged in the catalytic decomposition tower, and a spray layer is arranged in the spray tower.
Blast furnace gas enters a catalytic decomposition tower through an air inlet, is subjected to low-temperature catalytic decomposition by a filler in the catalytic decomposition tower, organic sulfur insoluble in water is decomposed into inorganic sulfur in the gas, enters a spray tower along with flue gas through a gas conveying pipe, a spray layer sprays alkaline solution to the gas to achieve the purpose of removing the inorganic sulfur, finally, the desulfurized blast furnace gas flows into a combustion device through an air outlet to be combusted, the combusted gas does not contain sulfur dioxide, and the gas is directly discharged. The blast furnace gas does not generate sulfur dioxide in the combustion process, and the atmospheric pollution is reduced by treating at the source.
As an improvement of the technical scheme: the filler layer is alumina, and the thickness of the filler layer is 3 m.
As an improvement of the technical scheme: the spraying layer comprises a spraying pipe, and calcium hydroxide slurry is arranged in the spraying pipe.
As an improvement of the technical scheme: the gas inlet is arranged at the upper end of the catalytic decomposition tower, and the communicating part of the gas pipe and the catalytic decomposition tower is positioned at the lower end of the catalytic decomposition tower.
As an improvement of the technical scheme: the gas outlet is positioned at the upper end of the spray tower, and the communicating part of the gas pipe and the spray tower is positioned at the lower end of the spray tower.
As an improvement of the technical scheme: the packing layer is arranged between the air inlet and the air conveying pipe, and the spraying layer is arranged between the air conveying pipe and the air outlet.
As an improvement of the technical scheme: the spraying layer is provided with a plurality of layers which are communicated with a spraying pipeline, and one end of the spraying pipeline, which is far away from the spraying layer, is communicated with a pulp tank.
As an improvement of the technical scheme: the slurry pool is arranged at the bottom of the spray tower, and the communication part of the gas pipe and the spray tower is positioned between the spray layer and the slurry pool.
As an improvement of the technical scheme: and a demister is also arranged between the air outlet and the spraying layer.
Owing to adopted above-mentioned technical scheme, compare with prior art, the utility model has the advantages that: the utility model provides a deviate from organic sulphur equipment for blast furnace gas is gaseous, through with blast furnace gas in the air inlet gets into catalytic decomposition tower, through the inside filler low temperature catalytic decomposition of catalytic decomposition tower, organic sulphur that will not be dissolved in water is decomposed into inorganic sulphur in gaseous, get into in the spray column along with the flue gas through the gas-supply pipe, the spray level sprays alkaline solution to gas, reach the purpose of desorption inorganic sulphur, the blast furnace gas of final desorption sulphur flows into combustion apparatus through the gas outlet and burns, the gas after the burning does not contain sulfur dioxide, direct emission can, can make blast furnace gas not produce sulfur dioxide in the combustion process, administer at the source, reduce the atmosphere pollution; the blast furnace gas is catalytically decomposed and sprayed and washed with water to remove organic sulfur before combustion, so that the construction of a desulfurization system in the flue gas of the blast furnace gas after combustion is not needed.
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an organic sulfur removal device for blast furnace gas of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Example (b): as shown in the attached figure 1, the organic sulfur removing equipment for blast furnace gas comprises a catalytic decomposition tower 1 and a spray tower 2, wherein the catalytic decomposition tower 1 is provided with a gas inlet 3, the spray tower 2 is provided with a gas outlet 4, the catalytic decomposition tower 1 is communicated with the spray tower 2 through a gas pipe 5, a packing layer is arranged in the catalytic decomposition tower 1, and a spray layer 6 is arranged in the spray tower 2.
Blast furnace gas enters the catalytic decomposition tower 1 through the gas inlet 3, is subjected to low-temperature catalytic decomposition by the filler in the catalytic decomposition tower 1, decomposes organic sulfur insoluble in water in the gas into inorganic sulfur, enters the spray tower 2 along with flue gas through the gas conveying pipe 5, sprays alkaline solution to the gas through the spray layer 6 to achieve the purpose of removing the inorganic sulfur, finally, the desulfurized blast furnace gas flows into the combustion device through the gas outlet 4 to be combusted, the combusted gas does not contain sulfur dioxide, and the method is implemented by directly discharging. The blast furnace gas does not generate sulfur dioxide in the combustion process, and the atmospheric pollution is reduced by treating at the source.
The blast furnace gas is catalytically decomposed and sprayed and washed with water to remove organic sulfur before combustion, so that the construction of a desulfurization system in the flue gas of the blast furnace gas after combustion is not needed.
In the utility model, the packing layer is alumina, the thickness of packing layer is 3 m. Alumina as catalystThe filler layer with the thickness of 3m is filled with a reagent, and blast furnace gas can be decomposed into sulfur dioxide and hydrogen sulfide when passing through the catalyst crystal at the temperature of 80 ℃, so that organic sulfur is converted into inorganic sulfur. Organic sulfur (microcrystalline filler) → H2S+SO2。
The spraying layer 6 comprises a spraying pipe 7, and calcium hydroxide slurry is arranged in the spraying pipe 7. The calcium hydroxide slurry is alkaline, so that inorganic sulfur in the spray tower 2 is washed by alkali to form water-soluble ions for removal, and H2S+SO2+4OH-→S2-+SO3 2-+4H2O。
As shown in figure 1, the air inlet 3 is arranged at the upper end of the catalytic decomposition tower 1, and the communicating part of the air delivery pipe 5 and the catalytic decomposition tower 1 is positioned at the lower end of the catalytic decomposition tower 1. The blast furnace gas can completely pass through the packing layer from top to bottom through the gas inlet 3 and react with the packing in the packing layer to change organic sulfur into gas inorganic sulfur. The gas outlet 4 is positioned at the upper end of the spray tower 2, and the communicating part of the gas pipe 5 and the spray tower 2 is positioned at the lower end of the spray tower 2. The spraying layer 6 sprays alkaline solution downwards, contacts with gas from the upstream in the descending process in the spraying tower 2 and absorbs sulfur dioxide and hydrogen sulfide therein, and the absorbed sulfur dioxide and hydrogen sulfide react with hydroxide ions in calcium hydroxide at the tower bottom of the spraying tower 2 to form sulfate ions and sulfur ions dissolved in water, so that the sulfur dioxide and the hydrogen sulfide in the gas are removed, the blast furnace gas discharged into the combustion device is free of sulfur, the combusted gas is free of sulfur dioxide, and the combusted gas is directly discharged.
As shown in figure 1, the packing layer is arranged between the air inlet 3 and the air conveying pipe 5, and the spraying layer 6 is arranged between the air conveying pipe 5 and the air outlet 4. In this embodiment, the spraying layer 6 is provided with a plurality of layers, the plurality of layers of spraying layers 6 are all communicated with a spraying pipeline 8, one end of the spraying pipeline 8 far away from the spraying layer 6 is communicated with a slurry tank 9, an alkaline solution of calcium hydroxide is filled in the slurry tank 9, flows into the spraying layer 6 through the spraying pipeline 8, and is sprayed out in the spraying tower 2 for sulfur removal. In this embodiment, the spraying layer 6 has three layers, and the three spraying layers 6 are all provided with spraying heads facing to the lower part, so that the sprayed calcium hydroxide solution is uniformly filled in the lower part of the spraying tower 2.
As shown in fig. 1, the slurry tank 9 is arranged at the bottom of the spray tower 2, and the communication part of the gas pipe 5 and the spray tower 2 is positioned between the spray layer 6 and the slurry tank 9. A demister 10 is arranged between the air outlet 4 and the spraying layer 6. The demister 10 is used for demisting, and the mist contains not only moisture, but also sulfuric acid, sulfate, etc., which also causes contamination and severe corrosion of the fan, heat exchanger and flue, and therefore, the wet desulfurization process requires demisting of the absorption equipment, and the purified gas is demisted before leaving the absorption tower.
The utility model discloses the structure of well defroster and thick liquid pond is the same with prior art, need not be repeated.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. An organic sulfur removing device for blast furnace gas is characterized in that: the catalytic decomposition tower is provided with an air inlet, the spray tower is provided with an air outlet, the catalytic decomposition tower and the spray tower are communicated through an air conveying pipe, a packing layer is arranged in the catalytic decomposition tower, and a spray layer is arranged in the spray tower.
2. The organic sulfur removal apparatus for blast furnace gas according to claim 1, wherein: the filler layer is alumina, and the thickness of the filler layer is 3 m.
3. The organic sulfur removal apparatus for blast furnace gas according to claim 1, wherein: the spraying layer comprises a spraying pipe, and calcium hydroxide slurry is arranged in the spraying pipe.
4. The organic sulfur removal apparatus for blast furnace gas according to claim 1, wherein: the gas inlet is arranged at the upper end of the catalytic decomposition tower, and the communicating part of the gas pipe and the catalytic decomposition tower is positioned at the lower end of the catalytic decomposition tower.
5. The organic sulfur removal apparatus for blast furnace gas according to claim 1, wherein: the gas outlet is positioned at the upper end of the spray tower, and the communicating part of the gas pipe and the spray tower is positioned at the lower end of the spray tower.
6. The organic sulfur removal apparatus for blast furnace gas according to claim 1, wherein: the packing layer is arranged between the air inlet and the air conveying pipe, and the spraying layer is arranged between the air conveying pipe and the air outlet.
7. The organic sulfur removal apparatus for blast furnace gas according to any one of claims 1 to 6, wherein: the spraying layer is provided with a plurality of layers which are communicated with a spraying pipeline, and one end of the spraying pipeline, which is far away from the spraying layer, is communicated with a pulp tank.
8. The organic sulfur removal apparatus for blast furnace gas according to claim 7, wherein: the slurry pool is arranged at the bottom of the spray tower, and the communication part of the gas pipe and the spray tower is positioned between the spray layer and the slurry pool.
9. The organic sulfur removal apparatus for blast furnace gas according to claim 8, wherein: and a demister is also arranged between the air outlet and the spraying layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021330235.4U CN213113235U (en) | 2020-07-08 | 2020-07-08 | Organic sulfur removing equipment for blast furnace gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021330235.4U CN213113235U (en) | 2020-07-08 | 2020-07-08 | Organic sulfur removing equipment for blast furnace gas |
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| CN213113235U true CN213113235U (en) | 2021-05-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323093A (en) * | 2021-12-06 | 2022-11-11 | 张伟 | Method and device for auxiliary self-reforming and purification of reducing gas |
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2020
- 2020-07-08 CN CN202021330235.4U patent/CN213113235U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323093A (en) * | 2021-12-06 | 2022-11-11 | 张伟 | Method and device for auxiliary self-reforming and purification of reducing gas |
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