CN212246922U - Novel blast furnace gas desulfurization system - Google Patents
Novel blast furnace gas desulfurization system Download PDFInfo
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- CN212246922U CN212246922U CN202022007326.0U CN202022007326U CN212246922U CN 212246922 U CN212246922 U CN 212246922U CN 202022007326 U CN202022007326 U CN 202022007326U CN 212246922 U CN212246922 U CN 212246922U
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Abstract
The utility model discloses a novel blast furnace gas desulfurization system belongs to blast furnace gas desulfurization technical field. The utility model discloses a vertical tower body, vertical tower body include dust intercepting device and dry dechlorination device, vertical tower body's output is connected with the tower of hydrolysising, the output of tower of hydrolysising is provided with the desulfurizing tower, the output of desulfurizing tower is connected with supplementary desulfurization dewatering device. The utility model discloses a dust intercepting device can intercept partial dust, through chloride ion in the dry process dechlorination device desorption blast furnace gas, reduce chloride ion, dust to the influence of blast furnace gas hydrolysis catalyst, improve hydrolysis catalyst's life, sweep pipe transport nitrogen gas through nitrogen gas, regularly clear stifled, dredge the ash to the filter screen, reduce the resistance loss that the dust blockked up the production, by desulfurizing tower desorption most sulphur composition again, can produce excellent desulfurization effect, create and considerable economic benefits thereof.
Description
Technical Field
The utility model relates to a blast furnace gas desulfurization technical field, more specifically say, relate to a novel blast furnace gas desulfurization system.
Background
Aiming at the problem that SO2 exceeds the standard after the byproduct of blast furnace gas in iron and steel enterprises is combusted, a tail end treatment mode is adopted in the past, namely, flue gas after the blast furnace gas is combusted is subjected to desulfurization treatment. With the adjustment of national industrial policies, the emission requirement on SO2 is greatly improved, and the tail end treatment cannot meet the emission requirement, SO that the iron and steel enterprises are required to realize the fine desulfurization of blast furnace gas from the source.
As for the blast furnace gas source fine desulfurization technology, no mature and accepted technical route exists at present. The sulfur in blast furnace gas is complex, and the blast furnace gas contains chloride ions and dust, which seriously affects the service life of the hydrolysis catalyst.
In this patent, a new type of blast furnace gas desulfurization system is designed, the blast furnace gas is first pre-treated by a dust interception and dry dechlorination device. The treated coal gas passes through a hydrolysis tower or a bypass, a desulfurizing tower can remove most of sulfur components, and finally passes through an auxiliary desulfurizing and dehydrating device.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
The defect and not enough to prior art exist, the utility model provides a novel blast furnace gas desulfurization system, the utility model discloses a dust intercepting device can intercept partial dust, through chloridion in the dry process dechlorination device desorption blast furnace gas, reduces chloridion, dust to the influence of blast furnace gas hydrolysis catalyst, improves the life of hydrolysis catalyst, by desulfurizing tower desorption most sulphur composition again, can produce excellent desulfurization effect, creates and considerable economic benefits.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model discloses a novel blast furnace gas desulfurization system, including vertical tower body, vertical tower body include dust intercepting device and dry dechlorination device, vertical tower body's output is connected with the tower of hydrolysising, the output of the tower of hydrolysising is provided with the desulfurizing tower, the output of desulfurizing tower is connected with supplementary desulfurization dewatering device.
Furthermore, the vertical tower body is divided into an upper tower section and a lower tower section, the lower section is a dust intercepting device, the upper section is a dry dechlorinating device, a filter screen is arranged inside the dust intercepting device, the dust intercepting device is externally connected with a nitrogen purging pipe, and the output end of the nitrogen purging pipe points to the filter screen.
Furthermore, an atomizing spray head is arranged inside the dry dechlorination device.
Furthermore, the front end of the hydrolysis tower is provided with a bypass pipeline, the input end of the bypass pipeline is communicated with the vertical tower body, and the output end of the bypass pipeline is communicated with the desulfurization tower.
Furthermore, the desulfurization tower adopts a dry adsorption method, coal gas passes through a dust intercepting device, a dry dechlorinating device and a hydrolysis tower, organic sulfur is hydrolyzed into inorganic sulfur by the hydrolysis tower, and the inorganic sulfur is removed by the desulfurization tower.
And further, the coal gas passes through a dust intercepting device and a dry dechlorinating device and is conveyed into a desulfurizing tower through a bypass pipeline, and the desulfurizing tower simultaneously removes organic sulfur and inorganic sulfur.
Furthermore, the auxiliary desulfurization and dehydration device is divided into an upper tower section and a lower tower section, wherein the upper section is an auxiliary desulfurization section, the lower section is a dehydration section, a nozzle is arranged in the auxiliary desulfurization section, and when the outlet H of the desulfurization tower is connected2And when the S content is still higher after detection, opening a nozzle in the auxiliary desulfurization section to further desulfurize the coal gas, and finally enabling the coal gas to enter a dehydration section to remove mechanical water and then enter a pipe network system.
Further, a TRT or pressure regulating valve bank is arranged between the desulfurizing tower and the hydrolysis tower.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
the utility model discloses in the blast furnace gas desulfurization work of specifically being applied to iron and steel enterprise factory, a new thinking is provided for metallurgical mill blast furnace gas desulfurization, can intercept partial dust through dust intercepting device, chloride ion in through dry process dechlorination device desorption blast furnace gas, reduce chloride ion, the dust is to the influence of blast furnace gas hydrolysis catalyst, improve hydrolysis catalyst's life, sweep pipe conveying nitrogen gas through nitrogen gas, regularly clear stifled to the filter screen, dredge the ash, reduce the loss of resistance that the dust blockked up the production, coal gas after the processing is through hydrolysis tower or bypass pipeline, again by most sulphur composition of desulfurizing tower desorption, can produce excellent desulfurization effect, create and considerable economic benefits.
Drawings
Fig. 1 is an overall flow chart of the present invention.
In the figure: 1. a vertical tower body; 11. a dust intercepting device; 12. a dry dechlorination device; 111. filtering with a screen; 112. a nitrogen purge tube; 2. a hydrolysis tower; 3. a desulfurizing tower; 4. a bypass line; 5. an auxiliary desulfurization dehydration device; 51. an auxiliary desulfurization section; 52. and (5) a dewatering section.
Detailed Description
The invention is further described with reference to the following figures and examples:
example 1
As can be seen from fig. 1, the novel blast furnace gas desulfurization system of this embodiment includes a vertical tower body 1, the vertical tower body 1 includes a dust intercepting device 11 and a dry dechlorinating device 12, the output end of the vertical tower body 1 is connected with a hydrolysis tower 2, the output end of the hydrolysis tower 2 is provided with a desulfurization tower 3, and the output end of the desulfurization tower 3 is connected with an auxiliary desulfurization and dehydration device 5.
The vertical tower body 1 is divided into an upper tower section and a lower tower section, the lower tower section is a dust intercepting device 11, the upper tower section is a dry-method dechlorinating device 12, a filter screen 111 is arranged inside the dust intercepting device 11, the dust intercepting device 11 is externally connected with a nitrogen purging pipe 112, the output end of the nitrogen purging pipe 112 points to the filter screen 111, the dust intercepting device 11 can intercept part of dust, the influence of the dust on a blast furnace gas hydrolysis catalyst is reduced, the intercepted dust is attached to the filter screen 111, the nitrogen purging pipe 112 conveys nitrogen, the filter screen 111 is periodically cleared and dredged, the resistance loss caused by dust blockage is reduced, an atomizing nozzle is arranged inside the dry-method dechlorinating device 12, and the dry-method dechlorinating device 12 is used for.
The hydrolysis tower 2 is a conventional hydrolysis tower and is used for converting organic sulfur into inorganic sulfur, a bypass pipeline 4 is arranged at the front end of the hydrolysis tower 2, the input end of the bypass pipeline 4 is communicated with the vertical tower body 1, the output end of the bypass pipeline 4 is communicated with the desulfurization tower 3, and under special conditions, coal gas can directly enter a back-end system without passing through the hydrolysis tower 2.
The desulfurization tower 3 adopts a dry adsorption method, the desulfurization tower 3 is used for removing inorganic sulfur, under normal conditions, coal gas passes through a dust intercepting device 11, a dry dechlorination device 12 and a hydrolysis tower 2, organic sulfur is hydrolyzed into inorganic sulfur by the hydrolysis tower 2, and the desulfurization tower 3 removes the inorganic sulfur; under special conditions, the coal gas passes through the dust intercepting device 11 and the dry-method dechlorinating device 12 and is conveyed into the desulfurizing tower 3 through the bypass pipeline 4, the coal gas does not pass through the hydrolysis tower 2, and organic sulfur and inorganic sulfur are simultaneously removed from the desulfurizing tower 3.
The auxiliary desulfurization and dehydration device 5 is divided into an upper tower section and a lower tower section, wherein the upper tower section is an auxiliary desulfurization section 51, the lower tower section is a dehydration section 52, and the auxiliary desulfurization section51 built-in nozzle, as outlet H of desulfurizing tower2When the S content is detected to be still higher, the nozzles in the auxiliary desulfurization section 51 are opened to further desulfurize the coal gas, and the coal gas finally enters the dehydration section 52 to remove mechanical water and then enters the pipe network system.
A TRT or pressure regulating valve bank is arranged between the desulfurizing tower 3 and the hydrolysis tower 2.
The utility model discloses in the blast furnace gas desulfurization work of specifically being applied to iron and steel enterprise factory, a new thinking is provided for metallurgical mill blast furnace gas desulfurization, but intercept partial dust through dust intercepting device 11, chloride ion in through dry process dechlorination device 12 desorption blast furnace gas, reduce chloride ion, the dust is to the influence of blast furnace gas hydrolysis catalyst, improve the life of hydrolysis catalyst, blow pipe 112 transport nitrogen gas through nitrogen gas, regularly clear stifled to filter screen 111, dredge the ash, reduce the resistance loss that the dust blockked up the production, coal gas after the processing is through hydrolysis tower 2 or bypass line 4, again by 3 desorption most sulphur components of desulfurizing tower, can produce excellent desulfurization effect, create and considerable economic benefits thereof.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (8)
1. The utility model provides a novel blast furnace gas desulfurization system, includes vertical tower body (1), its characterized in that: the vertical tower body (1) include dust intercepting device (11) and dry dechlorination device (12), the output of vertical tower body (1) is connected with hydrolysis tower (2), the output of hydrolysis tower (2) is provided with desulfurizing tower (3), the output of desulfurizing tower (3) is connected with supplementary desulfurization dewatering device (5).
2. The novel blast furnace gas desulfurization system according to claim 1, characterized in that: vertical tower body (1) divide into two upper and lower tower sections, the hypomere is dust intercepting device (11), the upper segment is dry dechlorination device (12), dust intercepting device (11) inside is equipped with filter screen (111), dust intercepting device (11) external nitrogen gas sweeps pipe (112), the directional filter screen (111) of output of nitrogen gas sweep pipe (112).
3. The novel blast furnace gas desulfurization system according to claim 1, characterized in that: an atomizing spray head is arranged in the dry dechlorinating device (12).
4. The novel blast furnace gas desulfurization system according to claim 1, characterized in that: the front end of the hydrolysis tower (2) is provided with a bypass pipeline (4), the input end of the bypass pipeline (4) is communicated with the vertical tower body (1), and the output end of the bypass pipeline (4) is communicated with the desulfurization tower (3).
5. The novel blast furnace gas desulfurization system according to claim 4, characterized in that: the desulfurization tower (3) adopts a dry adsorption method, coal gas passes through a dust intercepting device (11), a dry dechlorinating device (12) and a hydrolysis tower (2), organic sulfur is hydrolyzed into inorganic sulfur by the hydrolysis tower (2), and the inorganic sulfur is removed by the desulfurization tower (3).
6. The novel blast furnace gas desulfurization system according to claim 5, characterized in that: the coal gas passes through a dust intercepting device (11) and a dry-method dechlorinating device (12) and is conveyed into a desulfurizing tower (3) through a bypass pipeline (4), and organic sulfur and inorganic sulfur are simultaneously removed from the desulfurizing tower (3).
7. The novel blast furnace gas desulfurization system according to claim 1, characterized in that: the auxiliary desulfurization and dehydration device (5) is divided into an upper tower section and a lower tower section, the upper section is an auxiliary desulfurization section (51), the lower section is a dehydration section (52), a nozzle is arranged in the auxiliary desulfurization section (51), and when the outlet H of the desulfurization tower is connected2When the S content is detected to be still higher, the nozzle in the auxiliary desulfurization section (51) is opened to further desulfurize the coal gas, and the coal gas finally enters the dehydration section (5)2) And (4) removing the mechanical water and then entering a pipe network system.
8. The novel blast furnace gas desulfurization system according to claim 1, characterized in that: a TRT or pressure regulating valve bank is arranged between the desulfurizing tower (3) and the hydrolysis tower (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022007326.0U CN212246922U (en) | 2020-09-15 | 2020-09-15 | Novel blast furnace gas desulfurization system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022007326.0U CN212246922U (en) | 2020-09-15 | 2020-09-15 | Novel blast furnace gas desulfurization system |
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| CN212246922U true CN212246922U (en) | 2020-12-29 |
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| CN202022007326.0U Active CN212246922U (en) | 2020-09-15 | 2020-09-15 | Novel blast furnace gas desulfurization system |
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