CN215855942U - System for removing organic sulfur from blast furnace gas - Google Patents
System for removing organic sulfur from blast furnace gas Download PDFInfo
- Publication number
- CN215855942U CN215855942U CN202121542702.4U CN202121542702U CN215855942U CN 215855942 U CN215855942 U CN 215855942U CN 202121542702 U CN202121542702 U CN 202121542702U CN 215855942 U CN215855942 U CN 215855942U
- Authority
- CN
- China
- Prior art keywords
- reactor
- alkali
- outlet
- inlet
- stage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a system for removing organic sulfur from blast furnace gas, relates to the technical field of gas desulfurization equipment, and solves the problem of low removal rate of organic sulfur in the blast furnace gas at present. The system comprises a hydrolysis catalytic reactor, a first-stage alkali spraying reactor and a second-stage alkali spraying reactor which are all provided with an inlet and an outlet, wherein: the inlet of the hydrolysis catalytic reactor is used for introducing coal gas, the outlet of the hydrolysis catalytic reactor is communicated with the inlet of the primary alkali spraying reactor, the outlet of the primary alkali spraying reactor is communicated with the inlet of the secondary alkali spraying reactor, and the outlet of the secondary alkali spraying reactor is used for leading out the coal gas; the inlet and the outlet of the first-stage alkali spraying reactor are respectively positioned at the horizontal two ends of the first-stage alkali spraying reactor; the inlet of the second-stage alkali spraying reactor is arranged at the bottom of one side of the second-stage alkali spraying reactor in the horizontal direction, and the outlet of the second-stage alkali spraying reactor is arranged at the top of the second-stage alkali spraying reactor. The utility model can effectively improve the removal rate of organic sulfur in the furnace gas.
Description
Technical Field
The utility model relates to the technical field of coal gas desulfurization equipment, in particular to a system for removing organic sulfur from blast furnace gas.
Background
Blast furnace gas is the main secondary energy of steel plant, because the gas component contains a certain amount of organic sulfur harmful gas component, make blast furnace gas can't be used as the environmental protection energy, the organic sulfur in the blast furnace gas is removed at present, there is the problem that the removal rate is not high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a system for removing organic sulfur from blast furnace gas, which solves the problem of low removal rate of organic sulfur in blast furnace gas in the background art.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a blast furnace gas organosulfur removal system comprising a hydrolysis catalytic reactor, a primary alkali-blasting reactor, and a secondary alkali-blasting reactor, each having an inlet and an outlet, wherein: the inlet of the hydrolysis catalytic reactor is used for introducing coal gas, the outlet of the hydrolysis catalytic reactor is communicated with the inlet of the primary alkali spraying reactor, the outlet of the primary alkali spraying reactor is communicated with the inlet of the secondary alkali spraying reactor, and the outlet of the secondary alkali spraying reactor is used for leading out desulfurized coal gas;
the inlet and the outlet of the primary alkali spraying reactor are respectively positioned at the horizontal two ends of the primary alkali spraying reactor; the inlet of the second-stage alkali spraying reactor is arranged at the bottom of one side of the second-stage alkali spraying reactor in the horizontal direction, and the outlet of the second-stage alkali spraying reactor is arranged at the top of the second-stage alkali spraying reactor.
Preferably, the system further comprises a dehydrator, wherein the dehydrator is provided with an inlet and an outlet, and the inlet of the dehydrator is communicated with the outlet of the secondary alkali spraying reactor.
Preferably, the dehydrator is a spiral-flow plate dehydrator.
Preferably, the system further comprises a bypass valve, the bypass valve is connected with the hydrolysis catalytic reactor in parallel, the bypass valve is provided with an inlet and an outlet, the inlet of the bypass valve is used for introducing coal gas, and the outlet of the bypass valve is communicated with the inlet of the secondary alkali spraying reactor.
Preferably, each inlet is connected with the corresponding outlet in a welding mode.
Preferably, the outer wall of the first-stage alkali spraying reactor is cylindrical, the axis of the first-stage alkali spraying reactor is horizontal, and the length of the first-stage alkali spraying reactor is more than twice the diameter of the first-stage alkali spraying reactor.
Preferably, the primary alkali spraying reactor comprises a first alkali spraying mechanism, the first alkali spraying mechanism comprises a first spray head, and the liquid outlet direction of the first spray head is parallel to the axis of the primary alkali spraying reactor and faces to the outlet of the primary alkali spraying reactor.
Preferably, the outer wall of the secondary alkali spraying reactor is cylindrical, the axis of the secondary alkali spraying reactor is vertical, and the height of the secondary alkali spraying reactor is more than twice the diameter of the secondary alkali spraying reactor.
Preferably, the secondary alkali spraying reactor comprises a second alkali spraying mechanism, the second alkali spraying mechanism comprises a second spray head, and the liquid outlet direction of the second spray head is parallel to the axis of the secondary alkali spraying reactor.
Preferably, the bottom of the first-stage alkali spraying reactor and the bottom of the second-stage alkali spraying reactor are both provided with pipelines for discharging alkali liquor.
The utility model has the beneficial effects that:
according to the technical scheme, the organic sulfur removal system for the blast furnace gas disclosed by the utility model has the advantages that the hydrolysis catalytic reactor, the primary alkali spraying reactor and the secondary alkali spraying reactor are sequentially arranged, organic sulfur is converted into hydrogen sulfide by the hydrolysis catalytic reactor, alkali liquor in the primary alkali spraying reactor and alkali liquor in the secondary alkali spraying reactor react with hydrogen sulfide in the gas, the gas is discharged from the primary alkali spraying reactor and then enters the secondary alkali spraying reactor, and the residual hydrogen sulfide in the gas further reacts with the alkali liquor in the secondary alkali spraying reactor to improve the removal rate of sulfides in the gas;
in the technical scheme, the normal line of the gas outlet of the first-stage alkali spraying reactor is horizontal, and the normal line of the gas outlet of the second-stage alkali spraying reactor is vertical, so that the flowing direction of the gas in the first-stage alkali spraying reactor is different from the flowing direction of the gas in the second-stage alkali spraying reactor through the guidance of each reactor in the flowing process of the gas in the device, and the trend of hydrogen sulfide at different positions in the gas is changed, so that the blast furnace gas has kinetic energy different from the axial direction of the first-stage alkali spraying reactor and the axial direction of the second-stage alkali spraying reactor, the contact probability of the hydrogen sulfide and alkali liquor is increased, the treatment capacity of the second-stage alkali spraying reactor on residual hydrogen sulfide is further improved, and the treatment rate of organic sulfur by the device is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
The labels in the figure are: 1-hydrolysis catalytic reactor, 2-first stage alkali spraying reactor, 3-second stage alkali spraying reactor, 4-dehydrator, 5-bypass valve, 201-first alkali spraying mechanism.
Detailed Description
The technical solutions in the present embodiments will be clearly and completely described below with reference to the accompanying drawings in the present embodiments, which, however, should not be construed as limiting the utility model to specific embodiments, but are for explanation and understanding only:
the embodiment provides a blast furnace gas organic sulfur removal system, referring to fig. 1, the system comprises an inlet of a hydrolysis catalytic reactor 1 for introducing gas, an outlet of the hydrolysis catalytic reactor 1 is communicated with an inlet of a first-stage alkali spraying reactor 2, an outlet of the first-stage alkali spraying reactor 2 is communicated with an inlet of a second-stage alkali spraying reactor 3, and an outlet of the second-stage alkali spraying reactor 3 is used for leading out desulfurized gas.
When in use, the blast furnace gas containing organic sulfur is input from an upstream process along a pipeline and then sequentially passes through the hydrolysis catalytic reactor 1, the primary alkali spraying reactor 2 and the secondary alkali spraying reactor 3 so as to realize the high-efficiency desulfurization of the gas. Specifically, the coal gas is subjected to hydrolysis catalytic desulfurization in the hydrolysis catalytic reactor 1, a hydrolysis catalyst is arranged in the hydrolysis catalytic reactor 1, organic sulfur in the blast furnace coal gas is converted into hydrogen sulfide under the action of the hydrolysis catalyst, and the filling amount of the catalyst can be determined according to the content of the organic sulfur in the blast furnace coal gas and needs to be replaced regularly. The coal gas is discharged from the hydrolysis catalytic reactor 1 and then enters the primary alkali spraying reactor 2, hydrogen sulfide in the coal gas reacts with alkali liquor in the primary alkali spraying reactor 2, salt and water are generated by utilizing an acid-base neutralization principle, the coal gas is desulfurized and purified, the coal gas is discharged from the primary alkali spraying reactor 2 and then enters the secondary alkali spraying reactor 3, and residual hydrogen sulfide in the coal gas further reacts with the alkali liquor in the secondary alkali spraying reactor 3, so that the removal rate of sulfide in the coal gas is improved, and the product obtained after the combustion of the blast furnace coal gas can reach the national ultra-low emission environmental protection index.
The inlet and the outlet of the primary alkali spraying reactor 2 are respectively positioned at the horizontal two ends of the primary alkali spraying reactor 2; the inlet of the second-stage alkali spraying reactor 3 is arranged at the bottom of one side of the second-stage alkali spraying reactor 3 in the horizontal direction, the outlet of the second-stage alkali spraying reactor 3 is arranged at the top of the second-stage alkali spraying reactor 3, so that in the flowing process of the coal gas in the device, the flowing direction of the coal gas in the first-stage alkali spraying reactor 2 is different from that of the coal gas in the second-stage alkali spraying reactor 3 through the guide of each reactor, and the trend of the hydrogen sulfide at different positions in the coal gas is changed, so that the kinetic energy of the coal gas is different from the axial direction of the first-stage alkali spraying reactor 2 and the axial direction of the second-stage alkali spraying reactor 3, the contact probability of the hydrogen sulfide and alkali liquor is increased, the treatment capacity of the second-stage alkali spraying reactor 3 on the residual hydrogen sulfide is further improved, and the treatment rate of the device on organic sulfur is improved.
In this embodiment, the specific structure of the apparatus is as follows:
the hydrolysis catalytic reactor 1 is a tubular filler reactor, a hydrolysis catalyst capable of catalyzing organic sulfur into hydrogen sulfide is filled in the hydrolysis catalytic reactor 1, and an operator can select a proper hydrolysis catalyst according to the obtained convenience.
The first-stage alkali spraying reactor 2 is a pipeline type reactor, the second-stage alkali spraying reactor 3 is a tower type reactor, and each reactor comprises structures such as corrosion-resistant layers and the like which are required by the acid-base neutralization reactor.
The system also comprises a dehydrator 4, wherein the dehydrator 4 is provided with an inlet and an outlet, the inlet of the dehydrator 4 is communicated with the outlet of the secondary alkali spraying reactor 3, and the dehydrator 4 is a spiral-flow plate dehydrator 4 and is used for removing water carried in the blast furnace gas and reducing the moisture content in the blast furnace gas so as to ensure that the blast furnace gas reaches the technical conditions required by the blast furnace gas as fuel gas.
The system further comprises a bypass valve 5, the bypass valve 5 is connected with the hydrolysis catalytic reactor 1 in parallel, specifically, the bypass valve 5 is connected with the hydrolysis catalytic reactor 1 in parallel, the bypass valve 5 is provided with an inlet and an outlet, the inlet of the bypass valve 5 is used for introducing coal gas, and the outlet of the bypass valve 5 is communicated with the inlet of the second-stage alkali spraying reactor 3. The bypass valve 5 is normally closed and is only put into use when there is a change in the upstream process or a change in the load of the hydrolysis catalytic reactor 1.
In this embodiment, the inlet and the corresponding outlet of each device are all welded.
The outer wall of the primary alkali spraying reactor 2 is cylindrical, the inner diameter of the primary alkali spraying reactor 2 can be selected according to the gas flow rate of the blast furnace, and when the flow rate is high, the inner diameter of the primary alkali spraying reactor 2 is large so as to slow down the gas flow rate, increase the contact time of the gas and alkali liquor and improve the treatment capacity of the alkali liquor on hydrogen sulfide; when the gas flow rate is slow, the inner diameter of the first-stage alkali spraying reactor 2 can be correspondingly reduced, and the floor area of the first-stage alkali spraying reactor 2 is reduced under the condition of ensuring the treatment efficiency. The axial line of the first-stage alkali spraying reactor 2 is horizontal, and the length of the first-stage alkali spraying reactor 2 is more than twice of the diameter of the first-stage alkali spraying reactor 2, so that the first-stage alkali spraying reactor 2 is ensured to have larger volume space to accommodate coal gas in reaction with alkali liquor.
The first-stage alkali spraying reactor 2 comprises a first alkali spraying mechanism 201, the first alkali spraying mechanism 201 comprises a first spray head, alkali liquor sprayed by the first spray head is in a fog shape, the area covered by spraying is large, the processing capacity of the alkali liquor on hydrogen sulfide is improved, the liquid outlet direction of the first spray head is parallel to the axis of the first-stage alkali spraying reactor 2 and faces to the outlet of the first-stage alkali spraying reactor 2, so that the alkali liquor can flow along with the kinetic energy of gas flow, and the contact time of the alkali liquor and the hydrogen sulfide in the gas is prolonged.
The outer wall that the alkali reactor 3 was spouted to the second grade is cylindricly, the axis that the alkali reactor 3 was spouted to the second grade is vertical, the height that the alkali reactor 3 was spouted to the second grade is greater than the twice of the diameter that the alkali reactor 3 was spouted to the second grade, the alkali reactor 3 is spouted to the second grade promptly, the axis mutually perpendicular of alkali reactor 2 and the alkali reactor 3 is spouted to the second grade is spouted to the one-level, the trend of coal gas has the change in the messenger system, coal gas gets into when the alkali reactor 3 is spouted to the second grade and spouts the lateral wall contact of alkali reactor 3 and the flow of aggravation coal gas, with further make coal gas can contact more completely with alkali lye, promote alkali lye to the clearance rate of remaining hydrogen sulfide in the coal gas. In addition, the tower-shaped secondary alkali spraying reactor 3 occupies small area and can be adapted to plant areas with different sizes.
The second-stage alkali spraying reactor 3 comprises a second alkali spraying mechanism, the second alkali spraying mechanism comprises a second spray head, the liquid outlet direction of the second spray head is parallel to the axis of the second-stage alkali spraying reactor 3, in the embodiment, the second spray head is positioned at the middle upper part in the second-stage alkali spraying reactor 3, and the direction of the second spray head spraying alkali liquor faces downwards, so that the space which can be covered by the increased alkali liquor is increased, the tower-shaped second-stage alkali spraying reactor 3 is higher, and the alkali liquor is not easy to enter the subsequent flow under the influence of dead weight.
The bottom of the first-stage alkali spraying reactor 2 and the bottom of the second-stage alkali spraying reactor 3 are both provided with pipelines for discharging alkali liquor so as to avoid accumulation of alkali liquor in each reactor.
It is to be understood that the above examples are merely illustrative for clarity of description and are not limiting on the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the utility model.
Claims (10)
1. The blast furnace gas organic sulfur removing system is characterized by comprising a hydrolysis catalytic reactor, a first-stage alkali spraying reactor and a second-stage alkali spraying reactor, wherein the hydrolysis catalytic reactor, the first-stage alkali spraying reactor and the second-stage alkali spraying reactor are respectively provided with an inlet and an outlet, and the first-stage alkali spraying reactor and the second-stage alkali spraying reactor are respectively provided with an inlet and an outlet, wherein: the inlet of the hydrolysis catalytic reactor is used for introducing coal gas, the outlet of the hydrolysis catalytic reactor is communicated with the inlet of the primary alkali spraying reactor, the outlet of the primary alkali spraying reactor is communicated with the inlet of the secondary alkali spraying reactor, and the outlet of the secondary alkali spraying reactor is used for leading out desulfurized coal gas;
the inlet and the outlet of the primary alkali spraying reactor are respectively positioned at the horizontal two ends of the primary alkali spraying reactor; the inlet of the second-stage alkali spraying reactor is arranged at the bottom of one side of the second-stage alkali spraying reactor in the horizontal direction, and the outlet of the second-stage alkali spraying reactor is arranged at the top of the second-stage alkali spraying reactor.
2. The blast furnace gas organosulfur removal system of claim 1, further comprising a dehydrator having an inlet and an outlet, the inlet of the dehydrator being in communication with the outlet of the secondary alkali-spraying reactor, the outlet of the dehydrator being for the export of gas.
3. The blast furnace gas organosulfur removal system of claim 2, wherein the dehydrator is a swirl plate dehydrator.
4. The blast furnace gas organosulfur removal system of claim 1, further comprising a bypass valve connected in parallel with the hydrolysis catalytic reactor, the bypass valve having an inlet for introduction of gas and an outlet, the outlet of the bypass valve being in communication with the inlet of the secondary alkali injection reactor.
5. The blast furnace gas organosulfur removal system of claim 2 or 4, wherein each of the inlets is welded to the corresponding outlet.
6. The blast furnace gas organosulfur removal system of claim 1, wherein the outer wall of the primary alkali-blasting reactor is cylindrical, the axis of the primary alkali-blasting reactor is horizontal, and the length of the primary alkali-blasting reactor is greater than twice the diameter of the primary alkali-blasting reactor.
7. The blast furnace gas organosulfur removal system of claim 6, wherein the primary alkali-blasting reactor comprises a first alkali-blasting mechanism comprising a first nozzle, the outlet of the first nozzle being parallel to the axis of the primary alkali-blasting reactor and facing the outlet of the primary alkali-blasting reactor.
8. The blast furnace gas organosulfur removal system of claim 7, wherein the outer wall of the secondary alkali-blasting reactor is cylindrical, the axis of the secondary alkali-blasting reactor is vertical, and the height of the secondary alkali-blasting reactor is greater than twice the diameter of the secondary alkali-blasting reactor.
9. The blast furnace gas organosulfur removal system of claim 8, wherein the secondary alkali-blasting reactor comprises a secondary alkali-blasting mechanism comprising a secondary nozzle, the exit direction of the secondary nozzle being parallel to the axis of the secondary alkali-blasting reactor.
10. The blast furnace gas organosulfur removal system of claim 9, wherein the bottom of the primary alkali-spraying reactor and the bottom of the secondary alkali-spraying reactor are each provided with a pipe for discharging alkali liquor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121542702.4U CN215855942U (en) | 2021-07-07 | 2021-07-07 | System for removing organic sulfur from blast furnace gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121542702.4U CN215855942U (en) | 2021-07-07 | 2021-07-07 | System for removing organic sulfur from blast furnace gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215855942U true CN215855942U (en) | 2022-02-18 |
Family
ID=80333209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121542702.4U Active CN215855942U (en) | 2021-07-07 | 2021-07-07 | System for removing organic sulfur from blast furnace gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215855942U (en) |
-
2021
- 2021-07-07 CN CN202121542702.4U patent/CN215855942U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101934192B (en) | Double-tower ammonia-method desulfurization process | |
| CN204799086U (en) | Glass kiln flue gas desulfurization denitration processing system | |
| CN203108418U (en) | Wet process flue gas desulfurization and denitrification integrated device | |
| CN103771353A (en) | Regeneration method for alkylated waste sulfuric acid | |
| CN204710082U (en) | A kind of low-temperature denitration of flue gas system | |
| CN101254392B (en) | Energy-saving type sodium sulphite circulation desulfurizing device and method | |
| CN105664693A (en) | Sulfuric acid tail gas desulphurization apparatus by oxidation process and usage method thereof | |
| CN215855942U (en) | System for removing organic sulfur from blast furnace gas | |
| CN204111709U (en) | Methane bio-desulfurization system | |
| CN208436648U (en) | A kind of spray equipment of fume desulfurizing tower | |
| CN207822775U (en) | A kind of efficient flue gas desulfurization and denitrification device | |
| CN111004653A (en) | Blast furnace gas purification method and system | |
| CN214486355U (en) | Fluorine-containing tail gas treatment device | |
| CN201244442Y (en) | Spraying tube | |
| CN212713388U (en) | Wet purification device for total sulfur removal of blast furnace gas | |
| CN212999229U (en) | Multistage sulfur recovery system | |
| CN209475967U (en) | Ultra-low temperature denitration device combined with dual-alkali desulfurization process | |
| CN112852504A (en) | System and process for prolonging service life of blast furnace gas fine desulfurization reactant | |
| CN209237691U (en) | Tail gas and subsequent acidic water treatment facilities when a kind of damage | |
| CN207755980U (en) | Hydrogen sulfide absorption tower | |
| CN202460457U (en) | Viscose desulfurized hydrogen adsorption device | |
| CN112500893A (en) | Pipeline spraying system and method for removing organic sulfur or inorganic sulfur from blast furnace gas | |
| CN106853320A (en) | A kind of coal-burning boiler for flue gas desulfurization, denitration mechanism and method | |
| CN201618513U (en) | Flue gas desulfurization and waste liquor treatment system for boilers | |
| CN107485985A (en) | A kind of desulfuring and denitrifying apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |