KR101742735B1 - Method for removing hydrogen sulfide, and device for the same - Google Patents
Method for removing hydrogen sulfide, and device for the same Download PDFInfo
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- KR101742735B1 KR101742735B1 KR1020150190142A KR20150190142A KR101742735B1 KR 101742735 B1 KR101742735 B1 KR 101742735B1 KR 1020150190142 A KR1020150190142 A KR 1020150190142A KR 20150190142 A KR20150190142 A KR 20150190142A KR 101742735 B1 KR101742735 B1 KR 101742735B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B27/00—Arrangements for withdrawal of the distillation gases
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
- C10B41/08—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke for the withdrawal of the distillation gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/304—Hydrogen sulfide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/025—Other waste gases from metallurgy plants
Abstract
The present invention relates to a method and apparatus for removing hydrogen sulphide.
One embodiment of the present invention is a process for purifying coke oven gas comprising purifying coke gas; Neutralizing the H 2 S compound with an X 2 S compound in the form of an aerosol particle by adding a neutralizing agent to the purified gas; (-) charge to the neutralized X 2 S compound and removing it by using an electric dust collector; The hydrogen sulfide removal method comprising the steps of:
Description
One embodiment of the present invention relates to a method and apparatus for removing hydrogen sulphide.
The COG (Cokes Oven Gas) generated from the coke oven of the steelworks contains a large amount of impurities such as tar and other impurities such as hydrogen sulfide (H 2 S), ammonia (NH 3 ) and hydrogen cyanide (HCN) It can not be used right away and it will be purified through various processes. This refined coke gas is used as a heat source in various processes in the steelworks, and the remaining amount is transferred to a by-product gas combined cycle power plant and used as fuel for power generation. The coke gas transferred to the by-product gas combined power plant is mixed with residual blast furnace gas (BFG) used in the steel mill, and the dust and other dust components are further removed from the electrostatic precipitator (EP) (Gas Compressor) to the gas turbine.
In addition, refined coke oven gas at the steelworks is a good fit for use as a process heat source in steel mills. However, it still contains dust components such as tar and hydrogen sulfide gas. Thus, if coke gas containing hydrogen sulfide gas is used as the gas turbine fuel for the by-product gas combined power generation plant, it may cause damage to the equipment due to corrosion. Therefore, coke gas refined at a steel mill is still inadequate for immediate use. Therefore, most of the by-product gas combined power plants are cleaned through the electrostatic precipitator once again to remove tar components such as tar. On the other hand, most of the hydrogen sulfide (H 2 S) gas is used without any purification process. Hydrogen sulfide (H 2 S) is a typical corrosive gas, which causes corrosion of main parts of a power plant, shortening the life span of equipment parts, and requiring periodic maintenance. In order to solve such a problem, the present invention proposes a method of effectively removing hydrogen sulfide (H 2 S) gas at a stage before a coke gas is burned in a gas turbine at a by-product gas combined cycle power plant.
A method for removing hydrogen sulfide, and a device therefor.
A hydrogen sulfide removing method, which is an embodiment of the present invention, includes the steps of: purifying coke gas; Neutralizing the H 2 S compound with an X 2 S compound in the form of an aerosol particle by adding a neutralizing agent to the purified gas; (-) charge to the neutralized X 2 S compound and removing it by using an electric dust collector; . ≪ / RTI >
However, X may be Na or K.
Neutralizing the H 2 S compound with an X 2 S compound in the form of an aerosol particle by adding a neutralizing agent to the purified gas, wherein the neutralizing agent is selected from the group consisting of sodium hydroxide (NaOH), potassium hydroxide (KOH) And the neutralizing agent may be added by a spraying method. However, the present invention is not limited thereto. The reaction for neutralizing the H 2 S compound with the X 2 S compound is represented by the following relational formula 1.
[Relation 1]
H 2 S (g) + 2XOH (1)? X 2 S (s) + 2H 2 O (1)
Provided that X is Na or K.
The neutralized X 2 in the S compound (-) was given a charge this step of removing by using the electric dust collector; in the (-) X 2 S compound the charge is assigned the (+) of the electric dust collector electrode And can be removed.
Purifying the coke oven gas; by, the purified coke oven gas may include hydrogen sulfide (H 2 S) gas, the concentration of the refined coke oven gas in a hydrogen sulfide (H 2 S) gas is 0.5 to 1.5g / Nm < 3 >.
A hydrogen sulfide removing device according to another embodiment of the present invention includes: a coke gas supply device for supplying a coke gas; A blast furnace gas supplier for supplying blast furnace gas; A gas mixer for receiving a coke oven gas from the coke oven gas supply unit, receiving blast furnace gas from the blast furnace gas supply unit and mixing the blast furnace gas; A neutralizer atomizer for adding a neutralizer to the coke gas before the coke gas is delivered to the gas mixer; And an electrostatic precipitator that receives the mixed gas in the gas mixer and collects impurities in the gas.
At this time, the neutralizer atomizer may be connected to the coke gas feeder, and the neutralizer atomizer may be connected to a feed pipe through which the coke gas is delivered from the coke gas feeder to the gas mixer.
A neutralizer atomizer for adding a neutralizer to the coke gas before the coke gas is delivered to the gas mixer; (NaOH), potassium hydroxide (KOH), or a combination thereof. Further, with the additive, the hydrogen sulfide compound in the coke gas can be neutralized with an X 2 S compound in the form of an aerosol particle.
More specifically, the reaction of neutralizing with the X 2 S compound is represented by the following relational formula 1.
[Relation 1]
H 2 S (g) + 2XOH (1)? X 2 S (s) + 2H 2 O (1)
Provided that X is Na or K.
A neutralization reaction may be further generated by a coke gas supplied from the coke gas supplier and a gas mixture supplied from the blast furnace gas supplier to blend the blast furnace gas.
An electrostatic precipitator for receiving the mixed gas in the gas mixer and collecting impurities in the gas; Can be removed by applying a (-) charge to the X 2 S compound in the mixed gas.
The electrostatic precipitator includes a plurality of opposed collecting poles; And a discharge electrode positioned between the dust collecting electrodes, wherein the dust collecting electrode is a (+) electrode, the discharge electrode is a (-) electrode, and the mixed gas may be supplied between the opposed collecting electrodes.
An electrostatic precipitator for receiving the mixed gas in the gas mixer and collecting impurities in the gas; And a gas compressor for receiving the gas from which the impurities have been removed by the electrostatic precipitator and compressing the gas.
The compressed gas can be fed to the gas cooler and then supplied to the electrostatic precipitator by the gas compressor which receives the gas from which the impurities have been removed by the electrostatic precipitator and compresses the gas, May be delivered to the gas turbine.
Another hydrogen sulfide removal device according to another embodiment of the present invention includes: a coke gas supply device for supplying a coke gas; A blast furnace gas supplier for supplying blast furnace gas; A gas mixer for receiving a coke oven gas from the coke oven gas supply unit, receiving blast furnace gas from the blast furnace gas supply unit and mixing the blast furnace gas; An electrostatic precipitator for receiving the mixed gas in the gas mixer and collecting impurities in the gas; And a neutralizer atomizer for adding a neutralizer to the mixed gas before the mixed gas is transferred to the electrostatic precipitator; . ≪ / RTI >
A neutralizer atomizer for adding a neutralizer to the mixed gas before the mixed gas is delivered to the electrostatic precipitator; (NaOH), potassium hydroxide (KOH), or a combination thereof. Further, with the above additive, the hydrogen sulfide compound in the mixed gas can be neutralized with an X 2 S compound in the form of an aerosol particle. At this time, the reaction for neutralizing the X 2 S compound is represented by the following relational formula 1.
[Relation 1]
H 2 S (g) + 2XOH (1)? X 2 S (s) + 2H 2 O (1)
Provided that X is Na or K.
An electrostatic precipitator for receiving the mixed gas in the gas mixer and collecting impurities in the gas; (-) charge can be given to the X 2 S compound in the gas to be removed.
An electrostatic precipitator for receiving the mixed gas in the gas mixer and collecting impurities in the gas; And a gas compressor for receiving the gas from which the impurities have been removed by the electrostatic precipitator and compressing the gas.
The compressed gas can be fed to the gas cooler and then supplied to the electrostatic precipitator by the gas compressor which receives the gas from which the impurities have been removed by the electrostatic precipitator and compresses the gas, May be transferred to the gas turbine.
According to one embodiment of the present invention, by removing the hydrogen sulfide gas contained in the coke gas, problems caused by corrosion can be reduced. This can prolong the life of the part and reduce the maintenance cost associated with corrosion.
Fig. 1 schematically shows a reaction of neutralizing a hydrogen sulfide (H 2 S) compound with an X 2 S compound.
FIG. 2 is a diagram illustrating a step of applying a (-) charge to an X 2 S compound and then removing it using an electrostatic precipitator.
FIG. 3A is a schematic view of an apparatus in which a neutralizer atomizer in a hydrogen sulfide removing apparatus according to an embodiment of the present invention is connected to a coke gas feeder. FIG.
FIG. 3B is a schematic view of a device in which a neutralizer atomizer in a hydrogen sulfide removal device, which is an embodiment of the present invention, is connected to a transfer pipe for coke gas.
4 is a schematic view of a hydrogen sulfide removal apparatus according to another embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. However, it is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It is intended that the disclosure of the present invention be limited only by the terms of the appended claims. Like reference numerals refer to like elements throughout the specification.
Thus, in some embodiments, well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention. Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Whenever a component is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements, not the exclusion of any other element, unless the context clearly dictates otherwise. Also, singular forms include plural forms unless the context clearly dictates otherwise.
A hydrogen sulfide removing method, which is an embodiment of the present invention, includes the steps of: purifying coke gas; Neutralizing the H 2 S compound with an X 2 S compound in the form of an aerosol particle by adding a neutralizing agent to the purified gas; (-) charge to the neutralized X 2 S compound and removing it by using an electric dust collector; . ≪ / RTI >
Wherein X is Na or K.
First, the coke gas can be purified and prepared.
In addition, the purified coke oven gas may include hydrogen sulfide (H 2 S) gas, the concentration of hydrogen sulfide, the purified coke oven gas (H 2 S) gas may be from 0.5 to 1.5g / Nm 3.
Thereafter, a neutralizing agent may be added to the purified gas to neutralize the H 2 S compound into an X 2 S compound in the form of an aerosol particle.
At this time, the neutralizing agent may be sodium hydroxide (NaOH), potassium hydroxide (KOH), or a combination thereof, and the neutralizing agent may be added by a spraying method. However, the present invention is not limited thereto, and any method of spraying a neutralizing agent may be used.
More specifically, by adding such a neutralizing agent as described above, the hydrogen sulfide gas in the coke gas can be neutralized. The reaction of neutralizing the hydrogen sulfide (H 2 S) compound with an X 2 S compound is as shown in the following relational equation (1).
[Relation 1]
H 2 S (g) + 2XOH (1)? X 2 S (s) + 2H 2 O (1)
Provided that X is Na or K.
In addition, the reaction as in the above formula 1 is also disclosed in Fig.
Fig. 1 schematically shows a reaction of neutralizing a hydrogen sulfide (H 2 S) compound with an X 2 S compound.
Thereafter, a step of applying (-) charge to the neutralized X 2 S compound and removing it by using an electric dust collector.
More specifically, the hydrogen sulfide gas in the above relational expression 1 was neutralized with an X 2 S compound in the form of an aerosol particle. After the (-) charge is applied to the neutralized X 2 S compound, the neutralized X 2 S compound can be removed and moved to the (+) electrode of the electrostatic precipitator.
This process can be seen in more detail in FIG.
FIG. 2 is a diagram illustrating a step of applying a (-) charge to an X 2 S compound and removing it using an electrostatic precipitator.
More specifically, a negative charge can be given to an X 2 S compound precipitated in the form of an aerosol in a solid state, and then transferred to the (+) electrode to be removed using an electric dust collector.
A hydrogen sulfide removing device according to another embodiment of the present invention includes: a coke gas supply device for supplying a coke gas; A blast furnace gas supplier for supplying blast furnace gas; A gas mixer for receiving a coke oven gas from the coke oven gas supply unit, receiving blast furnace gas from the blast furnace gas supply unit and mixing the blast furnace gas; A neutralizer atomizer for adding a neutralizer to the coke gas before the coke gas is delivered to the gas mixer; And an electrostatic precipitator that receives the mixed gas in the gas mixer and collects impurities in the gas.
First, a coke gas supplier for supplying coke gas; May include hydrogen sulfide gas. More specifically, the hydrogen sulfide removing apparatus according to an embodiment of the present invention can be applied when the concentration of hydrogen sulfide gas in the coke gas is relatively small.
Further, it may include a blast furnace gas supplier for supplying blast furnace gas.
And a gas mixer that receives the coke gas from the coke gas supplier and receives the blast furnace gas from the blast furnace gas supplier and mixes the mixed gas.
And a neutralizer atomizer for adding a neutralizer to the coke gas before the coke gas is delivered to the gas mixer.
More specifically, the neutralizer atomizer may be connected to the coke gas feeder. Also, the neutralizer atomizer may be connected to a transport pipe through which the coke gas is delivered from the coke gas feeder to the gas mixer.
In addition, a neutralizer, such as sodium hydroxide (NaOH), potassium hydroxide (KOH), or a combination thereof, may be added to the coke gas by the neutralizer atomizer.
The hydrogen sulfide compound in the coke gas can be neutralized with an X 2 S compound in the form of an aerosol particle by the neutralizing agent.
More specifically, a neutralization reaction such as the following formula 1 may be generated.
[Relation 1]
H 2 S (g) + 2XOH (1)? X 2 S (s) + 2H 2 O (1)
Provided that X is Na or K.
Thereafter, a gas mixture supplied from the coke gas supplier and supplied with the blast furnace gas from the blast furnace gas supplier and mixed therewith, the hydrogen sulfide gas which has not yet been fully neutralized by the neutralizer atomizer described above, Mixing can result in further neutralization reactions.
Thereafter, (-) charge is applied to the X 2 S compound in the mixed gas by an electrostatic precipitator which receives the mixed gas in the gas mixer and collects the impurities in the gas.
More specifically, the X 2 S compound in the mixed gas produced by the above-mentioned neutralization reaction can be given a (-) charge and can be transferred to the (+) electrode. Then, the hydrogen sulfide gas can be removed by removing the X 2 S compound from the (+) electrode.
More specifically, the electrostatic precipitator comprises: a plurality of opposed collecting poles; And
And a discharge electrode positioned between the dust collecting electrodes, wherein the dust collecting electrode is a (+) electrode, the discharge electrode is a (-) electrode, and the mixed gas is supplied between a plurality of opposed collecting electrodes have.
In the specification of the present invention, the term "discharging electrode" refers to an electrode that charges a fine material such as dust or mist in the electrostatic precipitator, and may be a (-) electrode in the present invention.
In the specification of the present invention, collecting electrode refers to one side of the electrode in the electrostatic precipitator, and may be a (+) electrode in the present invention. More specifically, by adhering a fine material such as dust or mist charged by the discharge electrode to the dust collecting pole, the material can be collected and removed. This is also disclosed in FIG. 2 herein.
An electrostatic precipitator for receiving the mixed gas in the gas mixer and collecting impurities in the gas; And a gas compressor for receiving the gas from which the impurities have been removed by the electrostatic precipitator and compressing the gas.
Further, the compressed gas can be fed to the gas cooler by the gas compressor which receives the gas from which the impurities have been removed by the electric dust collector and compresses the gas, and then can be fed back to the electrostatic precipitator. Further, the compressed gas can be transferred to the gas turbine.
The hydrogen sulfide removing apparatus described above is as described in Figs. 3A and 3B.
FIG. 3A is a schematic view of an apparatus in which a neutralizer atomizer in a hydrogen sulfide removing apparatus according to an embodiment of the present invention is connected to a coke gas feeder. FIG.
FIG. 3B is a schematic view of a device in which a neutralizer atomizer in a hydrogen sulfide removal device, which is an embodiment of the present invention, is connected to a transfer pipe for coke gas.
Another hydrogen sulfide removal device according to another embodiment of the present invention includes: a coke gas supply device for supplying a coke gas; A blast furnace gas supplier for supplying blast furnace gas; A gas mixer for receiving a coke oven gas from the coke oven gas supply unit, receiving blast furnace gas from the blast furnace gas supply unit and mixing the blast furnace gas; An electrostatic precipitator for receiving the mixed gas in the gas mixer and collecting impurities in the gas; And a neutralizer atomizer for adding a neutralizer to the mixed gas before the mixed gas is transferred to the electrostatic precipitator; . ≪ / RTI >
First, a hydrogen sulfide removal device according to another embodiment of the present invention includes a coke gas supply device for supplying the coke gas; And a blast furnace gas supplier for supplying the blast furnace gas.
And a gas mixer for receiving the coke oven gas from the coke oven gas supply unit, receiving the blast furnace gas from the blast furnace gas supply unit, and mixing the blast furnace gas.
In addition, an electrostatic precipitator that receives the mixed gas in the gas mixer and collects impurities in the gas may be included. However, before the mixed gas is transferred to the electrostatic precipitator, the neutralizing agent May be further included.
At this time, a coke gas supplier for supplying coke gas; May include hydrogen sulfide gas.
Also, a gas mixer that receives the coke gas from the coke gas supplier, receives the blast furnace gas from the blast furnace gas supplier, and mixes the blast furnace gas may also include hydrogen sulfide gas.
More specifically, since the total flow rate of the gas is increased by mixing the coke gas and the blast furnace gas, the concentration of the hydrogen sulfide gas in the mixed gas can be lowered before mixing.
Therefore, the hydrogen sulfide removal device can be applied when the concentration of hydrogen sulfide gas in the coke gas is relatively high.
A neutralizer atomizer for adding a neutralizer to the mixed gas before the mixed gas is transferred to the electrostatic precipitator; A neutralizing agent which is sodium hydroxide (NaOH), potassium hydroxide (KOH), or a combination thereof may be added to the mixed gas.
The hydrogen sulfide compound in the mixed gas can be neutralized with an X 2 S compound in the form of an aerosol particle by the neutralizing agent.
More specifically, a neutralization reaction such as the following formula 1 may be generated.
[Relation 1]
H 2 S (g) + 2XOH (1)? X 2 S (s) + 2H 2 O (1)
Provided that X is Na or K.
Thereafter, (-) charge can be given to and removed from the X 2 S compound in the gas by an electrostatic precipitator which receives the mixed gas in the gas mixer and collects impurities in the gas.
More specifically, the X 2 S compound in the gas neutralized by the above-described neutralization reaction can be given a (-) charge and can be transferred to the (+) electrode. Then, the hydrogen sulfide gas can be removed by removing the X 2 S compound from the (+) electrode.
More specifically, the electrostatic precipitator comprises: a plurality of opposed collecting poles; And
And a discharge electrode positioned between the dust collecting electrodes, wherein the dust collecting electrode is a (+) electrode, the discharge electrode is a (-) electrode, and the mixed gas is supplied between a plurality of opposed collecting electrodes have.
Hereinafter, a detailed description related to the electrostatic precipitator will be omitted since it is as described above.
An electrostatic precipitator for receiving the mixed gas in the gas mixer and collecting impurities in the gas; And a gas compressor for receiving the gas from which the impurities have been removed by the electrostatic precipitator and compressing the gas.
Further, the compressed gas can be fed to the gas cooler by the gas compressor which receives the gas from which the impurities have been removed by the electric dust collector and compresses the gas, and then can be fed back to the electrostatic precipitator. Further, the compressed gas can be transferred to the gas turbine.
The aforementioned hydrogen sulfide removal device is as described in Fig. 4 herein.
4 is a schematic view of a hydrogen sulfide removal apparatus according to another embodiment of the present invention.
While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand.
It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be interpreted as being included in the scope of the present invention .
A: Coke gas feeder
B: Blast furnace gas feeder
C: Gas Mixer
D: neutralizer atomizer
E: Electrostatic precipitator
F: Gas compressor
Claims (28)
Preparing a blast furnace gas;
Neutralizing the H 2 S compound with an X 2 S compound in the form of an aerosol particle by adding a neutralizing agent to the purified coke gas; And
Mixing the neutralized coke gas and the blast furnace gas with a gas mixer to produce a mixed gas; And
Removing an impurity in the mixed gas by using an electrostatic precipitator,
Removing impurities in the mixed gas using an electrostatic precipitator,
(-) charge is given to the X 2 S compound and then removed.
(Provided that X is Na or K).
Adding a neutralizing agent to the purified gas to neutralize the H 2 S compound into an X 2 S compound in the form of an aerosol particle,
Wherein the neutralizing agent is sodium hydroxide (NaOH), potassium hydroxide (KOH), or a combination thereof.
Adding a neutralizing agent to the purified gas to neutralize the H 2 S compound into an X 2 S compound in the form of an aerosol particle,
Wherein the neutralizing agent is added by spray spraying.
Adding a neutralizing agent to the purified gas to neutralize the H 2 S compound into an X 2 S compound in the form of an aerosol particle,
Wherein the reaction of neutralizing the H 2 S compound with an X 2 S compound is represented by the following relational formula 1:
[Relation 1]
H 2 S (g) + 2XOH (1)? X 2 S (s) + 2H 2 O (1)
(Provided that X is Na or K).
(-) charge to the neutralized X 2 S compound and removing it by using an electric dust collector,
Wherein the (-) charged X 2 S compound is transferred to the (+) electrode of the electrostatic precipitator and removed.
By purifying the coke gas,
Wherein the purified coke gas comprises hydrogen sulfide (H 2 S) gas.
By purifying the coke gas,
Wherein the concentration of the hydrogen sulfide (H 2 S) gas in the purified coke gas is 0.5 to 1.5 g / Nm 3 .
A blast furnace gas supplier for supplying blast furnace gas;
A gas mixer for receiving a coke oven gas from the coke oven gas supply unit, receiving blast furnace gas from the blast furnace gas supply unit and mixing the blast furnace gas;
A neutralizer atomizer for adding a neutralizer to the coke gas before the coke gas is delivered to the gas mixer; And
And an electrostatic precipitator for receiving the mixed gas in the gas mixer and collecting impurities in the gas,
And a neutralizer atomizer for adding a neutralizer to the coke gas before the coke gas is delivered to the gas mixer,
The hydrogen sulfide compound in the coke gas is neutralized with an X 2 S compound in the form of an aerosol particle,
An electrostatic precipitator for receiving the mixed gas in the gas mixer and collecting impurities in the gas,
(-) charge is applied to the X 2 S compound in the mixed gas to remove the hydrogen sulfide.
Wherein the neutralizer atomizer is connected to the coke gas feeder.
Wherein the neutralizer atomizer is connected to a transport pipe through which the coke gas is delivered from the coke gas feeder to the gas mixer.
A neutralizer atomizer for adding a neutralizer to the coke gas before the coke gas is delivered to the gas mixer; By this,
Wherein the neutralizing agent is sodium hydroxide (NaOH), potassium hydroxide (KOH), or a combination thereof.
Wherein the neutralization agent is added to the coke gas before the coke gas is transferred to the gas mixer.
[Relation 1]
H 2 S (g) + 2XOH (1)? X 2 S (s) + 2H 2 O (1)
(Provided that X is Na or K).
And a gas mixer for receiving the coke oven gas from the coke oven gas supply unit and supplying the blast furnace gas from the blast furnace gas supply unit,
And a neutralization reaction is further generated.
The electrostatic precipitator includes:
A plurality of dust collecting poles facing each other; And
And a discharge electrode positioned between the dust collecting electrodes,
Wherein the dust collecting electrode is a (+) electrode, the discharging electrode is a (-) electrode,
Wherein the mixed gas is supplied to a space between the plurality of opposed collecting electrodes.
An electrostatic precipitator for receiving the mixed gas in the gas mixer and collecting impurities in the gas; Since the,
And a gas compressor for receiving the gas from which the impurities have been removed by the electric dust collector and compressing the gas.
And a gas compressor which receives the gas from which the impurities have been removed by the electric dust collector and compresses the gas,
Wherein the compressed gas is transferred to a gas cooler and then re-supplied to the electrostatic precipitator.
And a gas compressor which receives the gas from which the impurities have been removed by the electric dust collector and compresses the gas,
Wherein the compressed gas is delivered to a gas turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150190142A KR101742735B1 (en) | 2015-12-30 | 2015-12-30 | Method for removing hydrogen sulfide, and device for the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150190142A KR101742735B1 (en) | 2015-12-30 | 2015-12-30 | Method for removing hydrogen sulfide, and device for the same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101974564B1 (en) | 2017-12-13 | 2019-05-02 | 주식회사 포스코 | Apparatus for gas processing and method thereof |
| KR20190128299A (en) | 2018-05-08 | 2019-11-18 | 주식회사 포스코 | Gas treating method and gas treating apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101290660B1 (en) | 2012-05-15 | 2013-07-30 | 인하대학교 산학협력단 | The eliminating method of hydrogen sulfide gas by electric precipitator |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101290660B1 (en) | 2012-05-15 | 2013-07-30 | 인하대학교 산학협력단 | The eliminating method of hydrogen sulfide gas by electric precipitator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101974564B1 (en) | 2017-12-13 | 2019-05-02 | 주식회사 포스코 | Apparatus for gas processing and method thereof |
| KR20190128299A (en) | 2018-05-08 | 2019-11-18 | 주식회사 포스코 | Gas treating method and gas treating apparatus |
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