CN203096010U - Dry-method purifying device of blast furnace gas - Google Patents
Dry-method purifying device of blast furnace gas Download PDFInfo
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- CN203096010U CN203096010U CN 201320037923 CN201320037923U CN203096010U CN 203096010 U CN203096010 U CN 203096010U CN 201320037923 CN201320037923 CN 201320037923 CN 201320037923 U CN201320037923 U CN 201320037923U CN 203096010 U CN203096010 U CN 203096010U
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- blast furnace
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Abstract
The utility model discloses a dry-method purifying device of blast furnace gas. The dry-method purifying device comprises a rough dry-method dedusting device, a fine dry-method dedusting device, a dry-method deacidification adsorption tower, a regeneration carrier gas heating device and a waste acid collecting device, wherein the fine dry-method dedusting device is communicated with the dry-method deacidification adsorption tower, and the regeneration carrier gas heating device is communicated with the dry-method deacidification adsorption tower; the dry-method deacidification adsorption tower provided by the utility model is used for completely removing harmful substances having corrosivity on pipelines and equipment in the coal gas, such as, chlorine, sulfur and ammonia, and is used for completely solving the problems of corrosion and salification of the blast furnace gas pipeline and equipment after dry-method dust removal; and when the adsorbent of the dry-method deacidification adsorption tower provided by the utility model realizes saturation adsorption, acidic materials and dust, and the like, in the adsorbent are separated out through a high temperature carrier gas to regenerate the dry adsorbent, thereby improving the utilization rate of the adsorbent, reducing the operation and maintenance costs of the purifying device and avoiding secondary environmental pollution caused by discarding or burying the dry adsorbent.
Description
Technical field
The utility model relates to flue gas purifying equipment, particularly a kind of blast furnace gas dry treating plant.
Background technology
For responding the policy requirements of national energy-conserving and environment-protective, domestic blast furnace adopts dry dedusting technology in a large number, and this technology is ripe relatively and produced energy-saving benefit preferably; But in actual production, can not effectively remove corrosive mediums such as chlorine, sulphur because of dry dedusting technology, cause purification system gas line and auxiliary facility the fast new problem of corrosion speed to occur, this has also seriously hindered the use and the development of dry dedusting technology.
Industry adopts the more method that removes acid attack media such as chlorine, sulphur that wet scrubbing, dry type adsorbents adsorb are arranged at present.Compare with wet scrubbing, dry type adsorbents adsorb purification techniques has the advantage of not spraying water, do not lower the temperature, do not produce new environmental protection and energy saving aspects such as source of pollution; But dry type adsorbents adsorb finite capacity can lose efficacy behind the operation certain hour, as abandons or landfill inefficacy sorbent material, change novel sorbents, can cause secondary pollution to environment, and can significantly improve the refining plant operation expense.
The utility model content
In view of this, the purpose of this utility model provides a kind of blast furnace gas dry refining plant, it can remove dust and acid attack material in the blast furnace gas, avoid the quick corrosion of coal gas system pipeline and auxiliary facility, and after being regenerated in adsorption tower, the dry type sorbent material reuses, can reduce the operation expense of refining plant, to solve the defective that existing blast furnace gas dry dusting device exists.
The utility model blast furnace gas dry refining plant, comprise the smart cleaning apparatus of thick cleaning apparatus of dry method and dry method, also comprise dry method deacidification adsorption tower, regeneration carrier gas heating unit and spent acid collection device, the blast furnace gas import of the blast furnace gas outlet of the smart cleaning apparatus of described dry method and dry method deacidification adsorption tower is communicated with, described regeneration is communicated with the carrier gas outlet of carrier gas heating unit and the carrier gas inlet of dry method deacidification adsorption tower, and the sewage draining exit and the spent acid collection device of described dry method deacidification adsorption tower are communicated with.
Further, described dry method deacidification adsorption tower is two groups, every group of dry method deacidification adsorption tower comprises at least one dry method deacidification adsorption tower, the blast furnace gas outlet of the smart cleaning apparatus of described dry method is communicated with respectively by the blast furnace gas import of bye-pass and every dry method deacidification adsorption tower, and described regeneration is communicated with respectively by the deacidify carrier gas inlet of adsorption tower of bye-pass and every dry method with the carrier gas outlet of carrier gas heating unit;
Further, also comprise on the blast furnace gas inlet ductwork that is arranged on dry method deacidification adsorption tower or the blast furnace gas export pipeline of dry method deacidification adsorption tower on the reducing valve group and the power generation assembly that is arranged in parallel with the reducing valve group;
Further, also comprise the cooled dehydrated tower, containing of sour carrier gas outlet and the cooled dehydrated tower sour carrier gas inlet of containing of described dry method deacidification adsorption tower is communicated with, the wastewater outlet of described cooled dehydrated tower and spent acid collection device are communicated with, and also are provided with the high altitude discharge pipe or/and gas recovery pipe on the described cooled dehydrated tower;
Further, be provided with spray equipment and the dewatering unit that is positioned at the spray equipment top in the described cooled dehydrated tower;
Further, described regeneration is electric heater, interchanger, boiler or hotblast stove with the carrier gas heating unit;
Further, the sorbent material that is provided with in the described dry method deacidification adsorption tower is porous support or the gac that contains alkaline active ingredient and catalyzer;
Further, the smart cleaning apparatus of described dry method is sack cleaner, electric precipitator, metal dusting device or the north plate fly-ash separator that burns;
Further, described spent acid collection device is the pond.
The beneficial effects of the utility model:
1, the utility model blast furnace gas dry refining plant, thoroughly remove chlorine in the coal gas, sulphur, ammonia etc. to pipeline and the mordant objectionable impurities of equipment by dry method deacidification adsorption tower, the blast furnace gas condensate water pH value can be controlled at 6 ~ 8 interior, chloride ion content＜300mg/L, fundamentally solve the burn into salification problem of blast furnace gas pipeline behind the dry method dust, equipment, make subsequent user pipeline and equipment need not to take again anti-corrosion measure.
2, the utility model blast furnace gas dry refining plant, after the dry type adsorbents adsorb of dry method deacidification adsorption tower is saturated, 100 ℃ ~ 500 ℃ superheated vapours or 300 ℃ ~ 700 ℃ high-temperature flue gas/coal gas that produce with the carrier gas heating unit feed in the dry method deacidification adsorption tower as the high temperature carrier gas by regenerating, the high temperature carrier gas can separate out with dust etc. with the acidic substance in the dry type sorbent material, make dry type adsorbent reactivation and repeated use, improved the utilising efficiency of sorbent material, reduced the operation expense of refining plant, and avoided abandoning or landfill dry type sorbent material to second environmental pollution.
3, the utility model blast furnace gas dry refining plant is recycled to pipe network with containing of non-steam class behind the sour carrier gas cooling and purifying by the cooled dehydrated tower, has avoided high temperature to contain the direct exhaust emission atmosphere of sour carrier gas; Focus on spent acid waste water by the spent acid collection device, avoided the exhaust emission of waste water, spent acid.
Description of drawings
Fig. 1 is first kind of embodiment structural representation of the utility model blast furnace gas dry refining plant;
Fig. 2 is second kind of embodiment structural representation of the utility model blast furnace gas dry refining plant;
Fig. 3 is the third embodiment structural representation of the utility model blast furnace gas dry refining plant;
Fig. 4 is the 4th a kind of embodiment structural representation of the utility model blast furnace gas dry refining plant.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1, present embodiment blast furnace gas dry refining plant, comprise the smart cleaning apparatus 2 of thick cleaning apparatus 1 of dry method and dry method, also comprise dry method deacidification adsorption tower 3, regeneration carrier gas heating unit 4 and spent acid collection device 5, the blast furnace gas import of the blast furnace gas outlet of the smart cleaning apparatus 2 of described dry method and dry method deacidification adsorption tower 3 is communicated with, described regeneration is communicated with the carrier gas outlet of carrier gas heating unit 4 and the carrier gas inlet of dry method deacidification adsorption tower 3, and the sewage draining exit and the spent acid collection device 5 of described dry method deacidification adsorption tower 3 are communicated with.
In present embodiment blast furnace gas dry refining plant when work,, the blast furnace gas of discharging from blast furnace 6 furnace roofs enters earlier the thick cleaning apparatus 1 of dry method successively and the smart cleaning apparatus 2 of dry method carries out dust removal process; Blast furnace gas enters dry method deacidification adsorption tower 3 then, and the chlorine in the blast furnace gas, sulphur, ammonia etc. are deviate from pipeline and the mordant objectionable impurities of equipment; Entering gaspipe network 7 supply users through dry method deacidification adsorption tower 3 except that the blast furnace gas after the acid treatment.The utility model blast furnace gas dry refining plant, thoroughly remove chlorine in the coal gas, sulphur, ammonia etc. to pipeline and the mordant objectionable impurities of equipment by dry method deacidification adsorption tower, the blast furnace gas condensate water pH value can be controlled at 6 ~ 8 interior, chloride ion content＜300mg/L, fundamentally solve the burn into salification problem of blast furnace gas pipeline behind the dry method dust, equipment, make subsequent user pipeline and equipment need not to take again anti-corrosion measure.
The utility model blast furnace gas dry refining plant, after the dry type adsorbents adsorb of dry method deacidification adsorption tower 3 is saturated, 100 ℃ ~ 500 ℃ superheated vapours or 300 ℃ ~ 700 ℃ high-temperature flue gas/coal gas high-temperature carrier gas that produce with carrier gas heating unit 4 feed in the dry method deacidification adsorption tower 3 by regenerating, the high temperature carrier gas can separate out with dust etc. with the acidic substance in the dry type sorbent material, make dry type adsorbent reactivation and repeated use, improved the utilising efficiency of sorbent material, reduced the operation expense of refining plant, and avoided abandoning or landfill dry type sorbent material exists to second environmental pollution.
As improvement to present embodiment, described dry method deacidification adsorption tower 3 is two groups, every group of dry method deacidification adsorption tower comprises at least one dry method deacidification adsorption tower 3, the blast furnace gas outlet of the smart cleaning apparatus 2 of described dry method is communicated with respectively by the blast furnace gas import of bye-pass and every dry method deacidification adsorption tower 3, and described regeneration is communicated with respectively by the deacidify carrier gas inlet of adsorption tower 3 of bye-pass and every dry method with the carrier gas outlet of carrier gas heating unit 4; In the present embodiment, two groups of dry method deacidification adsorption tower 3 can take 1 group of operation, 1 group standby, or 1 group of operation, 1 group of regenerated mode of operation, can guarantee the continuous operation of refining plant, and working efficiency is higher.
As the improvement to present embodiment, as depicted in figs. 1 and 2, this blast furnace gas dry refining plant also comprises reducing valve group 8 on the blast furnace gas export pipeline that is arranged on dry method deacidification adsorption tower 3 and the power generation assembly 9 that is arranged in parallel with reducing valve group 8; The blast furnace gas of discharging from dry method deacidification adsorption tower 3 has higher air pressure and heat energy, by power generation assembly the pressure energy and the heat energy of blast furnace gas are recycled, can play effect in energy saving and environmental protection, described power generation assembly can adopt decompressor to add the form of generator.In concrete enforcement, when power generation assembly 9 operations are broken down, can close rotor machine early gate 10 and power generation assembly late gate 11, and open reducing valve group 8, blast furnace gas enters gaspipe network 7 after 8 step-downs of reducing valve group, can not exert an influence to subsequent user.
In the present embodiment, power generation assembly 9 is arranged at the rear of dry method deacidification adsorption tower 3, and blast furnace gas enters power generation assembly 9 after deacidification, can not produce corrosion harmfulness to power generation assembly 9.Certainly in different embodiments, as shown in Figure 3 and Figure 4, also can take on the blast furnace gas inlet ductwork of dry method deacidification adsorption tower 3, to be provided with reducing valve group 8 and with reducing valve group 8 power generation assemblys 9 in parallel, can play equally reclaim blast furnace gas heat energy and pressure can effect.
As improvement to present embodiment, as Fig. 2 and shown in Figure 4, this blast furnace gas dry refining plant also comprises cooled dehydrated tower 12, containing of sour carrier gas outlet and the cooled dehydrated tower 12 sour carrier gas inlet of containing of described dry method deacidification adsorption tower 3 is communicated with, the wastewater outlet of described cooled dehydrated tower 12 and spent acid collection device 5 are communicated with, and also are provided with high altitude discharge pipe 13 and gas recovery pipe 14 on the described cooled dehydrated tower 12.In concrete enforcement, regeneration can be superheated vapour or coal gas of high temperature/flue gas with the high temperature carrier gas that carrier gas heating unit 4 produces; When the high temperature carrier gas is superheated vapour, superheated vapour on deviating from the dry type sorbent material acidic substance and dust after can directly enter in the spent acid collection device 5; When the high temperature carrier gas is coal gas of high temperature/flue gas, coal gas of high temperature/flue gas is behind the acidic substance and dust deviate from the dry type sorbent material, need enter that cooled dehydrated tower 12 purifies, cooling and processed, and then process high altitude discharge pipe 13 is discharged into the high-altitude or process gas recovery pipe 14 enters into gaspipe network 7 recyclings, causes topsoil to avoid coal gas of high temperature/flue gas directly to discharge.Certainly in different embodiments, also high altitude discharge pipe 13 or gas recovery pipe 14 can only be set on the described cooled dehydrated tower 12.
As improvement to present embodiment, 12 li dewatering units 16 that are provided with spray equipment 15 and are positioned at spray equipment 15 tops of described cooled dehydrated tower, by the molten acidic solution of spray equipment 15 sprays, can effectively deviate to contain the acidic substance that carry in sour coal gas of high temperature/flue gas, slough the moisture that carries in coal gas/flue gas by dewatering unit 16, can avoid follow-up pipeline, equipment are caused corrosion.
As the improvement to present embodiment, described regeneration is electric heater with carrier gas heating unit 4, and certainly in different embodiments, described regeneration also can be interchanger, boiler or hotblast stove etc. with carrier gas heating unit 4.
As the improvement to present embodiment, the sorbent material 17 that is provided with in the described dry method deacidification adsorption tower 3 is porous support or the gac that contains alkaline active ingredient and catalyzer,, adsorptivity is strong, good purification such as deacidification; Certainly in different embodiments, described sorbent material also can be gac.
As the improvement to this enforcement, the smart cleaning apparatus 2 of described dry method is a sack cleaner, good dedusting effect, and equipment cost is low; Certainly in different embodiments, the smart cleaning apparatus 2 of described dry method also can be electric precipitator, metal dusting device or the north plate fly-ash separator etc. that burns.
As the improvement to this enforcement, described spent acid collection device 5 is the pond, and mode of construction is simple, implements easily, and cost is low.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (8)
1. blast furnace gas dry refining plant, comprise the smart cleaning apparatus of thick cleaning apparatus of dry method and dry method, it is characterized in that: also comprise dry method deacidification adsorption tower, regeneration carrier gas heating unit and spent acid collection device, the blast furnace gas import of the blast furnace gas outlet of the smart cleaning apparatus of described dry method and dry method deacidification adsorption tower is communicated with, described regeneration is communicated with the carrier gas outlet of carrier gas heating unit and the carrier gas inlet of dry method deacidification adsorption tower, and the sewage draining exit and the spent acid collection device of described dry method deacidification adsorption tower are communicated with.
2. according to the described blast furnace gas dry refining plant of claim 1, it is characterized in that: described dry method deacidification adsorption tower is two groups, every group of dry method deacidification adsorption tower comprises at least one dry method deacidification adsorption tower, the blast furnace gas outlet of the smart cleaning apparatus of described dry method is communicated with respectively by the blast furnace gas import of bye-pass and every dry method deacidification adsorption tower, and described regeneration is communicated with respectively by the deacidify carrier gas inlet of adsorption tower of bye-pass and every dry method with the carrier gas outlet of carrier gas heating unit.
3. according to the described blast furnace gas dry refining plant of claim 1, it is characterized in that: also comprise on the blast furnace gas inlet ductwork that is arranged on dry method deacidification adsorption tower or the blast furnace gas export pipeline of dry method deacidification adsorption tower on the reducing valve group and the power generation assembly that is arranged in parallel with the reducing valve group.
4. according to arbitrary described blast furnace gas dry refining plant among the claim 1-3, it is characterized in that: also comprise the cooled dehydrated tower, containing of sour carrier gas outlet and the cooled dehydrated tower sour carrier gas inlet of containing of described dry method deacidification adsorption tower is communicated with, the wastewater outlet of described cooled dehydrated tower and spent acid collection device are communicated with, and also are provided with the high altitude discharge pipe or/and gas recovery pipe on the described cooled dehydrated tower.
5. according to the described blast furnace gas dry refining plant of claim 4, it is characterized in that: be provided with spray equipment and the dewatering unit that is positioned at the spray equipment top in the described cooled dehydrated tower.
6. according to the described blast furnace gas dry refining plant of claim 1, it is characterized in that: described regeneration is electric heater, interchanger, boiler or hotblast stove with the carrier gas heating unit.
7. according to the described blast furnace gas dry refining plant of claim 1, it is characterized in that: the smart cleaning apparatus of described dry method is sack cleaner, electric precipitator, metal dusting device or the north plate fly-ash separator that burns.
8. according to the described blast furnace gas dry refining plant of claim 1, it is characterized in that: described spent acid collection device is the pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320037923 CN203096010U (en) | 2013-01-24 | 2013-01-24 | Dry-method purifying device of blast furnace gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320037923 CN203096010U (en) | 2013-01-24 | 2013-01-24 | Dry-method purifying device of blast furnace gas |
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| CN203096010U true CN203096010U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320037923 Expired - Lifetime CN203096010U (en) | 2013-01-24 | 2013-01-24 | Dry-method purifying device of blast furnace gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103060015A (en) * | 2013-01-24 | 2013-04-24 | 中冶赛迪工程技术股份有限公司 | Blast-furnace gas dry purification device |
| CN107083465A (en) * | 2017-04-26 | 2017-08-22 | 中冶南方工程技术有限公司 | Hot-blast stove fume waste heat is used for the process system of air blow for removing moisture |
-
2013
- 2013-01-24 CN CN 201320037923 patent/CN203096010U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103060015A (en) * | 2013-01-24 | 2013-04-24 | 中冶赛迪工程技术股份有限公司 | Blast-furnace gas dry purification device |
| CN107083465A (en) * | 2017-04-26 | 2017-08-22 | 中冶南方工程技术有限公司 | Hot-blast stove fume waste heat is used for the process system of air blow for removing moisture |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |