CN114225693B - Blast furnace gas purifying treatment device - Google Patents
Blast furnace gas purifying treatment device Download PDFInfo
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- CN114225693B CN114225693B CN202111642119.5A CN202111642119A CN114225693B CN 114225693 B CN114225693 B CN 114225693B CN 202111642119 A CN202111642119 A CN 202111642119A CN 114225693 B CN114225693 B CN 114225693B
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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
- B01D53/86—Catalytic processes
- B01D53/8603—Removing sulfur compounds
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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
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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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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/22—Dust arresters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a blast furnace gas purifying treatment device, which relates to blast furnace gas treatment equipment, and has the technical scheme that: comprises a blast furnace, a cyclone dust collector, a catalytic filter dust collector, a TRT residual pressure recovery turbine power generation device, a pressure reducing valve group and an alkali spraying tower; the catalytic filter dust remover comprises a plurality of treatment towers which are connected in parallel, wherein the lower end of the treatment tower is provided with an air inlet pipe connected with a blast furnace, and the upper end of the treatment tower is provided with an air outlet pipe connected with a TRT residual pressure recovery turbine power generation device and a pressure reducing valve group; the catalytic filter layer and the supplementary catalytic layer are arranged in the treatment tower, so that dust in blast furnace gas can be filtered and organic sulfur in the blast furnace gas can be hydrolyzed and catalyzed; the alkali spraying tower removes inorganic sulfur and other acidic pollutants in the gas by spraying alkali liquor. The invention can treat sulfur-containing pollutants, dust and other pollutants in the blast furnace gas at the same time, improves the cleaning degree of the blast furnace gas, can greatly reduce the pollution in the use process of the rear end user, and reduces the environmental protection equipment investment of the rear end user.
Description
Technical Field
The invention relates to blast furnace gas treatment equipment, in particular to a blast furnace gas purifying treatment device.
Background
Blast furnace gas is a byproduct produced in the iron-making process, is low-heat-value combustible gas, and is mainly applied to hot blast stoves, steel rolling, coking and the like at present. The composition and calorific value of the blast furnace gas are related to the fuel used in the blast furnace, the kind of pig iron produced and the smelting process, but are basically allContains part of organic sulfur and inorganic sulfur, the organic sulfur is COS and CS 2 Mainly, inorganic sulfur is H 2 S is the main component.
However, the treatment process of the blast furnace gas at the present stage only removes dust and dechlorides, and cannot treat sulfur-containing pollutants in the blast furnace gas, SO that SO is generated after the blast furnace gas is combusted 2 And is discharged into the atmosphere along with the flue gas. Because the blast furnace gas has more application occasions, if desulfurization facilities are arranged at the downstream user terminal, the equipment investment is large, and the centralized management is not facilitated.
There is therefore a need to propose a new solution to this problem.
Disclosure of Invention
The invention aims to solve the problems and provide the blast furnace gas purifying treatment device which can treat sulfur-containing pollutants and other pollutants in blast furnace gas, improve the cleaning degree of the blast furnace gas, greatly reduce the pollution in the use process of a rear end user and reduce the investment of environment-friendly equipment of the rear end user.
The technical aim of the invention is realized by the following technical scheme: the blast furnace gas purifying treatment device is characterized by comprising a blast furnace, a cyclone dust collector, a catalytic filter dust collector, a TRT residual pressure recovery turbine power generation device, a pressure reducing valve group and an alkali spraying tower; the catalytic filter dust remover comprises a treatment tower, wherein the lower end of the treatment tower is provided with an air inlet pipe connected with a blast furnace, and the upper end of the treatment tower is provided with an air outlet pipe connected with a TRT residual pressure recovery turbine power generation device and a pressure reducing valve group; the treatment tower is internally provided with a catalytic filter layer, the catalytic filter layer comprises a plurality of catalytic filter pipes, a supplementary catalytic layer is arranged above the catalytic filter layer, the supplementary catalytic layer comprises a plurality of supplementary catalytic pipes fixed through a supporting frame, the catalytic filter layer is used for filtering dust in blast furnace gas and hydrolyzing organic sulfur in catalytic gas, and the supplementary catalytic layer is used for further hydrolyzing residual organic sulfur in catalytic gas; the alkali spraying tower is used for washing and removing inorganic sulfur and acid pollutants in the gas by spraying alkali liquor.
The invention further provides that the catalytic filter pipes are arranged through a second sealing isolation frame, the upper side and the lower side of the second sealing isolation frame are sealed, and the catalytic filter pipes are internally provided with ceramic fibers for supporting a catalyst.
The invention is further characterized in that a cloth-equalizing layer is arranged between the supplementary catalytic layer and the catalytic filter layer, and a plurality of uniformly distributed cloth-equalizing holes are formed in the cloth-equalizing layer.
The invention further provides that the pipe wall of the supplementary catalytic pipe is made of ceramic fibers, and the pipe wall is internally loaded with a catalyst.
The invention further provides that the catalyst is an aluminium-based catalyst or a titanium-based catalyst or a mixture of the two.
The invention is further characterized in that a layer of guide plate for uniformly dispersing air flow is arranged above the air inlet pipe, and a plurality of steam spray pipes are arranged on the lower side of the guide plate.
The invention is further characterized in that a first sealing isolation frame is arranged at the lower end of the supplementary catalytic tube, the upper side and the lower side of the first sealing isolation frame are sealed and isolated, the lower end of the supplementary catalytic tube extends downwards to the lower side of the first sealing isolation frame, and a treatment cavity with the upper end closed and the lower end open is arranged in the supplementary catalytic tube.
The invention is further characterized in that a water distribution pipe is arranged in the treatment cavity of the supplementary catalytic pipe, a plurality of groups of water distribution parts are arranged on the water distribution pipe along the length direction, the water distribution parts are used for supplementing water into the treatment cavity, and the water supplemented by the water distribution pipe is contacted with high-temperature blast furnace gas in the treatment cavity to be evaporated to form steam.
The invention is further characterized in that two groups of water distribution hole groups are arranged on the water distribution part, and the pore channels of the two groups of water distribution hole groups are in an inclined state of expanding or converging towards the outer sides in opposite directions.
The invention is further arranged that the water distribution pipe is provided with water distribution brush groups corresponding to the upper side and the lower side of the water distribution part, and the water distribution brush groups are provided with a plurality of bristles for receiving water scattered by the water distribution part and improving the contact area with blast furnace gas.
The water distribution part is further provided with a conical necking pipe for transition, the water distribution part and the water distribution pipe are arranged between each water distribution part and each water distribution pipe, the water distribution hole groups are arranged on the outer sides of the necking pipes, water blocking sleeves are sleeved on the outer sides of the two necking pipes, the inner periphery of each water blocking sleeve is provided with a conical surface matched with the corresponding necking pipe, and the conical surfaces are used for covering the water distribution hole groups; the water blocking sleeve can slide relatively and is used for opening the water blocking hole group; a buffer spring is elastically pressed between the two water-blocking sleeves.
The invention is further arranged that the lower end of the water distribution pipe extends out of the supplementary catalytic pipe and is supported by a lifting frame capable of lifting, a plurality of lifting rods are fixed at the lower part of the treatment tower, and the lifting ends of the lifting rods extend into the treatment tower and are fixedly connected with the lifting frame; the lower extreme of crane sets up the delivery pipe, the delivery pipe is connected with the water distribution pipe respectively through the water supply joint, the delivery pipe passes through the hose and is connected with external water source.
The invention is further characterized in that the water distribution pipe is arranged on the lifting frame through the guide cylinder, the periphery of the guide cylinder is fixedly connected with the lifting frame, a guide cavity for the water distribution pipe to pass through is arranged in the guide cylinder, two guide limiting blocks are arranged at the edges of two ends of the guide cavity, an annular stop block is fixed on the periphery of the water distribution pipe between the two guide limiting blocks, and a supporting spring is elastically pressed between the stop block and the lower guide limiting block.
The invention is further characterized in that the inner side of the upper guide limiting block is fixedly provided with a guide lug, the position of the water distribution pipe corresponding to the guide lug is provided with a spiral groove for accommodating the guide lug, the spiral groove is mutually matched with the guide lug and used for rotationally guiding the water distribution pipe, and the lower end of the water distribution pipe is connected with a water supply pipe through a rotatable water supply joint.
The invention is further arranged that the water distribution hole group comprises a plurality of water distribution holes I and water distribution holes II, the water distribution holes I are annularly distributed on one side of the necking pipe close to the middle of the water distribution part, and the water resistance sleeve can completely cover the water distribution holes I; the water distribution holes II are annularly distributed at the position of the necking pipe, which is close to the outer side of the water distribution part, and the water resistance sleeve can partially cover the water distribution holes II downwards.
The invention is further provided that one ends of the two water-blocking sleeves, which are opposite, are provided with flaring conical surfaces, the water distribution hole group also comprises supplementary water distribution holes positioned in the middle of the water distribution part, and the supplementary water distribution holes are annularly distributed on the periphery in the middle of the water distribution part; the outside of the water resistance sleeve is provided with a supporting ring, and the buffer spring is sleeved on and propped against the supporting ring.
The invention is further arranged that the water distribution brush group comprises an outer water distribution brush and an inner water distribution brush, wherein the outer water distribution brush and the inner water distribution brush are uniformly distributed in an annular array, the outer water distribution brush is fixedly connected to the periphery of one side of the large diameter of the necking pipe, and the inner water distribution brush is fixedly connected to the periphery of the corresponding water resistance sleeve and can move up and down along with the water resistance sleeve.
The invention is further arranged that the end parts of the outer water distribution brushes are propped against the inner wall of the supplementary catalytic tube, the number and the positions of the inner water distribution brushes on the two water resistance sleeves are up and down corresponding, and the outer ends of the inner water distribution brushes at the up and down corresponding positions are mutually connected; when the two water-blocking sleeves are mutually closed, the outer end of the inner water-distributing brush is propped against the inner wall of the supplementary catalytic tube.
The invention is further provided that the inner water distribution brushes at the upper and lower corresponding positions are mutually sleeved through the elastic connecting sleeve, and the end parts of the inner water distribution brushes are bent towards the opposite sides to form fork shapes.
The invention is further characterized in that the lower side of the water distribution part is provided with a plurality of layers of water distribution discs which are in a cone-shaped structure with the middle recessed downwards, and the middle of the water distribution discs is fixed with the water distribution pipe; the water distribution plate is provided with a plurality of through holes.
The invention is further characterized in that a water spraying head is arranged at the upper end of the water distribution pipe, and a plurality of water spraying holes are formed in the periphery of the water spraying head.
The invention is further characterized in that a diaphragm for axially separating the water spraying holes is arranged in the water spraying holes, the length of the diaphragm is longer than that of the water spraying holes, and the diaphragm is a flexible sheet body with elasticity.
The invention is further characterized in that an eccentric device is arranged at the lower side of the water distribution pipe close to the water spraying head, an impeller driven by water flow in the water distribution pipe is arranged in the eccentric device, and the gravity center of the impeller is deviated from the rotation axis.
In summary, the invention has the following beneficial effects:
through adopting catalytic filter dust remover and spouting alkali tower, compound desulfurization's function in the dust removal function can eliminate organic sulfur pollutant in the blast furnace gas treatment process, avoids blast furnace gas downstream customer's desulfurization facility to build repeatedly, alleviates blast furnace gas pipeline's corruption simultaneously, reduces pipeline fortune dimension and replacement cost.
Through combining the cyclone dust collector, can handle the dust impurity of very big majority in the blast furnace gas, reduce the filtration pressure of catalytic filtration dust remover, be applicable to the blast furnace gas that contains dirt concentration height and use, have better suitability.
Through adopting multichannel multilayer catalytic filtration's structure, can filter the dust in the coal gas to carry out hydrolysis catalytic reaction to the organosulfur in the coal gas, convert the organosulfur into inorganic sulfur, remove with other acid pollutant in spouting the alkali tower together, can further promote the treatment effect of organosulfur.
The hydrolysis catalyst is loaded on the internal structure of the catalytic filter pipe, dust in the coal gas is intercepted on the outer surface of the filter pipe, the dust content of the filtered coal gas is very small, and organic sulfur in the coal gas can fully contact with catalyst particles in the filter pipe when passing through the catalytic filter pipe, so that hydrolysis reaction is generated. The catalytic filter tube is made of ceramic fibers, and the surface of one side of the catalytic filter tube is of a microporous structure so as to remove fine particle dust; and the porous supporting structure layer is arranged at the inner side, the hard ceramic fibers are crisscrossed, and catalyst particles are loaded on the porous supporting structure layer, so that a rich surface area is provided for the catalytic hydrolysis of organic sulfur.
Drawings
FIG. 1 is a schematic structural view of a blast furnace gas treatment apparatus according to the prior art;
FIG. 2 is a schematic diagram of a blast furnace gas purifying apparatus according to the present invention;
FIG. 3 is a schematic diagram of a blast furnace gas purifying device according to the present invention;
FIG. 4 is a schematic view of a catalytic filter dust collector according to the present invention;
FIG. 5 is a schematic illustration of the structure of the supplemental catalytic layer of the present invention;
FIG. 6 is a schematic view of the structure of the supplemental catalytic tube of the present invention;
FIG. 7 is a schematic diagram of a water distribution portion according to the present invention;
FIG. 8 is a schematic diagram of a water distribution portion according to the present invention;
FIG. 9 is a schematic diagram III of a water distribution portion according to the present invention;
FIG. 10 is a schematic view of the structure of the water distribution pipe, the guide sleeve and the lifting frame of the present invention;
FIG. 11 is a schematic view of the structure of the water jet hole of the sprinkler head according to the present invention.
Reference numerals: 1. a blast furnace; 2. a cyclone dust collector; 3. a gas heat exchanger; 4. a bag-type dust collector; 5. TRT residual pressure recovery turbine power generation device; 6. a pressure reducing valve group; 7. spraying alkali tower; 8. a catalytic filter dust collector; 10. a treatment tower; 11. an air inlet pipe; 12. an air outlet pipe; 13. a deflector; 131. a steam nozzle; 14. supplementing the catalytic layer; 141. supplementing a catalytic tube; 142. a support frame; 143. sealing the first isolation frame; 144. a processing chamber; 15. a cloth equalizing layer; 151. holes are uniformly distributed; 16. a catalytic filter layer; 161. a catalytic filter tube; 162. sealing the second isolation frame; 17. a water distribution pipe; 171. a water distribution part; 1711. a necking pipe; 1712. a water blocking sleeve; 1713. a conical surface; 1714. a buffer spring; 1715. a support ring; 1716. a flaring conical surface; 172. a water distribution hole group; 1721. a water distribution hole II; 1722. a water distribution hole I; 1723. supplementing water distribution holes; 173. a water distribution brush group; 1731. an outer water distribution brush; 1732. the inner cloth is brushed; 1733. a water distribution gap; 1734. an elastic connecting sleeve; 1735. water distribution flanging; 174. a water distribution plate; 175. a through hole; 176. a water spray head; 1761. a water spraying hole; 1762. a membrane; 177. an eccentric device; 18. a lifting frame; 181. a lifting rod; 182. a lifting end; 183. a guide cylinder; 1831. a guide chamber; 1832. a stop block; 1833. a support spring; 1834. a guide spiral groove; 1835. a guide projection; 1836. a guide limiting block; 19. a water supply pipe; 191. a water supply joint; 192. and (3) a hose.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The embodiment discloses a blast furnace gas purifying treatment device, which is shown by referring to figures 2-4 and comprises a blast furnace 1, a catalytic filter dust remover 8, a TRT residual pressure recovery turbine power generation device 5, a pressure reducing valve group 6 and an alkali spraying tower 7; the catalytic filter dust remover 8 comprises a treatment tower 10, wherein the lower end of the treatment tower 10 is connected with an air inlet pipe 11, the upper end of the treatment tower is connected with an air outlet pipe 12, and the treatment tower is connected with the blast furnace 1 through the air inlet pipe 11; the upper end of the treatment tower 10 is connected with an air outlet pipe 12, a TRT residual pressure recovery turbine power generation device 5 and a pressure reducing valve group 6 are connected in parallel on the air outlet pipe 12, and then an alkali spraying tower 7 is connected to remove acid pollutants so as to realize the treatment of blast furnace gas.
The catalytic filter dust remover is internally provided with a catalytic tube loaded with a hydrolysis catalyst, and has the functions of hydrolyzing organic sulfur and filtering dust removal, and the hydrolysis catalyst can hydrolyze the organic sulfur into inorganic sulfur. The hydrolysis catalyst can be aluminum-based, titanium-based or a mixture thereof, can be used in a wide temperature range, has an organic sulfur conversion rate of more than 90%, and the components of the specific hydrolysis catalyst are disclosed in the prior art, and are not described herein.
The hydrolysis catalyst is supported on the catalytic filter pipe 161, and because dust is intercepted and filtered on the outer layer, organic sulfur in the coal gas can fully contact with catalyst particles in the filter pipe when passing through the catalytic filter pipe 161, so that hydrolysis reaction is generated. The catalytic filter tube 161 can be made of ceramic fiber, and one side surface of the catalytic filter tube is of a microporous structure so as to remove fine particle dust; and the porous supporting structure layer is arranged at the inner side, the hard ceramic fibers are crisscrossed, and catalyst particles are loaded on the porous supporting structure layer, so that a rich surface area is provided for the catalytic hydrolysis of organic sulfur.
The multi-layer catalytic structure can be arranged in the catalytic filter dust remover, and the organic sulfur can be repeatedly catalyzed after dust is filtered, so that the full hydrolysis of the organic sulfur is ensured, and the integral treatment effect of the equipment is greatly improved; and the original gas heat exchanger 3 in the system can be directly canceled, so that the equipment investment is reduced, and the operation energy consumption is reduced.
Adding H in the alkali spraying tower 7 2 S removing function, can remove chloride ion and H simultaneously 2 S and other acidic substances, and the corrosion of downstream equipment is relieved. The alkaline washing tower adopts countercurrent spraying, a 2-4-layer spraying device is arranged according to the emission reduction requirement of acidic pollutants, and a 2-3-layer high-efficiency demister is arranged at the outlet; the spray liquid can be NaOH solution or Na solution 2 CO 3 Solutions, and the like.
In order to improve the distribution uniformity of the gas, a layer of guide plate 13 is arranged between the catalytic filter layer 16 and the air inlet pipe 11, and the guide plate 13 can uniformly guide the gas so as to ensure that the gas can uniformly pass through the filtering and catalytic area.
For part of blast furnace gas, the steam content in the gas is low, the direct catalysis can not meet the requirement of catalytic hydrolysis, and the catalytic reaction effect is poor; therefore, for this kind of blast furnace gas, water needs to be replenished into the gas, and a plurality of steam spray pipes 131 can be directly installed at the inlet flue of the dust collector to replenish water into the gas. Or liquid water can be sprayed into the treatment tower 10, after the water contacts with the blast furnace gas and is heated, the water automatically evaporates to form steam, water can be supplemented into the blast furnace gas, and part of heat can be taken away by the liquid water in the evaporation process, so that the temperature of the blast furnace gas is slightly reduced, the temperature is kept in a proper reaction range, and the high-temperature pressure of the excessive temperature to equipment in the treatment tower 10 can be reduced.
In order to improve the treatment effect of the blast furnace gas, when the dust concentration of the blast furnace gas is higher than 30g/Nm3, a cyclone dust collector 2 is connected between the blast furnace 1 and a catalytic filter dust collector 8, dust particles in the blast furnace gas are pre-dedusted through the cyclone dust collector 2, the pressure of subsequent dust removal is reduced, and the blockage of the dust to a catalytic filter pipe is reduced so as to keep the stable catalytic efficiency of a catalyst.
Example two
The present embodiment discloses a blast furnace gas purifying treatment apparatus, and on the basis of the first embodiment, description will be made with reference to fig. 4;
a catalytic filter layer 16 is arranged in the treatment tower 10, and the gas passing through the catalytic filter layer 16 is filtered and subjected to catalytic reaction treatment; wherein the catalytic filter layer 16 comprises a plurality of catalytic filter tubes 161; the catalytic filter tube 161 has a structure of a vertically arranged test tube, and is internally provided with ceramic fibers for supporting a catalyst, so that organic sulfur in coal gas can be catalyzed and hydrolyzed.
The catalytic filter pipes 161 on the same layer are installed through the second sealing isolation frame 162, the structure of the second sealing isolation frame 162 is similar to that of the first sealing isolation frame 143, and sealing structures are formed on the upper side and the lower side of the separation position, so that the gas can circulate only from the catalytic filter pipes 161, and the treatment of the gas through the catalytic filter pipes 161 is ensured.
Example III
The present embodiment discloses a blast furnace gas purifying treatment apparatus, and on the basis of the first embodiment, a catalytic filter dust collector 8 in the apparatus will be described.
The supplementary catalytic layer 14 is arranged at the upper side of the middle of the treatment tower 10, the supplementary catalytic layer 14 comprises a plurality of supplementary catalytic tubes 141 fixed by a supporting frame 142, and the supplementary catalytic tubes 141 are vertically and uniformly arranged in parallel; the first sealing and isolating frame 143 is installed at the lower end of the supplementary catalytic tube 141, the first sealing and isolating frame 143 takes a partition plate as a main body, an opening corresponding to the supplementary catalytic tube 141 is formed on the plate, the opening and the edge of the supplementary catalytic tube 141 are sealed by sealing elements, and the upper side and the lower side of the first sealing and isolating frame 143 are sealed and isolated, so that air flow can only pass through the supplementary catalytic tube 141.
The lower end of the supplementary catalytic tube 141 extends downwards to the lower side of the first sealing isolation frame 143, a treatment cavity 144 with the upper end closed and the lower end open is arranged in the supplementary catalytic tube 141 to form an inverted test tube structure, and organic sulfur in catalytic gas can be hydrolyzed through the supplementary catalytic tube 141; the pipe wall of the supplementary catalytic pipe 141 is made of ceramic fiber, and the inside of the pipe wall of the supplementary catalytic pipe 141 is loaded with catalyst to perform catalytic reaction on organic sulfur in the coal gas.
The uniform distribution layer 15 can be arranged between the supplementary catalytic layer 14 and the catalytic filtration layer 16, uniformly distributed uniform distribution holes 151 are formed on the uniform distribution layer 15, and the air flow can be kept to rise more stably through the uniform distribution holes 151, so that the uniformity of the air in the supplementary catalytic filtration contact process is improved.
Example IV
The present embodiment discloses a blast furnace gas purifying treatment device, and based on the above embodiments, the water replenishing scheme in the catalytic filter dust collector 8 will be described in detail with reference to fig. 5 to 9.
In the supplementary catalytic layer 14, a water distribution pipe 17 is installed in the treatment cavity 144 of each supplementary catalytic pipe 141, three to four groups of water distribution parts 171 are formed on the water distribution pipe 17 along the length direction, water, mainly liquid water, can be supplemented into the treatment cavity 144 through the water distribution parts 171, small liquid drops are formed after the water is sprayed through the water distribution pipe 17, and the water supplemented through the water distribution pipe 17 is contacted with high-temperature blast furnace gas in the treatment cavity 144 to be evaporated to form steam, so that the water content in the gas is supplemented;
the water supplemented by the water supplementing pipe is re-evaporated and then is subjected to subsequent pollutant treatment along with the blast furnace gas, so that the water used for the water supplementing pipe can be cooling water in the production process or washing water with acidic pollutants and the like, and the treatment of the wastewater can be relieved to a certain degree; or part of sewage generated by the subsequent alkali spraying tower 7 in the equipment can be directly supplied through pipeline drainage.
As shown in fig. 6, two water distribution hole groups 172 are formed on the water distribution portion 171 of the water distribution pipe 17, water is sprayed out of the water distribution control groups through the water pressure in the water supplementing pipe and is dispersed into the water supplementing catalytic pipe 141, the sprayed water can wash the inner wall of the water supplementing catalytic pipe 141 to play a certain dust cleaning effect, and sewage formed after washing flows to the bottom of the treatment tower 10 to be discharged again; in order to increase the heat exchange area of the water, water distribution brush groups 173 are arranged on the upper side and the lower side of the water distribution pipe 17 corresponding to the water distribution part 171, the water distribution brush groups 173 are provided with a plurality of bristles, the water scattered by the water distribution part 171 can be received through the fine bristles, the contact area with the blast furnace gas is increased, and the evaporation efficiency of the water on the bristles can be increased after the blast furnace gas flows through; and due to the existence of the water distribution brush group 173, the residence time of water drops in the inner cavity of the supplementary catalytic tube 141 can be prolonged, and the water drops can be fully evaporated or mostly evaporated due to the long enough time for heat exchange evaporation.
For the water distribution hole group 172 and the water distribution brush group 173, various structures can be arranged, for example, as shown in fig. 5, a pore canal can be directly processed on the side wall of the water distribution pipe 17 or a nozzle structure is arranged in the pore canal to form a structure capable of spraying water, and in order to improve the adhesion quantity between sprayed water and the water distribution brush group 173, the pore canals of the two water distribution hole groups 172 can be in an inclined state of expanding or converging towards the outer side in opposite directions, so that part of sprayed water can be adhered to bristles to form a larger evaporation area, and the evaporation efficiency of the water is improved; the water distribution brush groups 173 may be arranged in a single layer structure, and are arranged only on the upper and lower sides of each water distribution portion 171;
or as shown in fig. 7, the structure of the water distribution portion 171 can be further optimized, the pipe diameter at the position of the water distribution portion 171 is thinner than that at other positions of the water distribution pipe 17, the water distribution portion 171 and the water distribution pipe 17 are in transitional connection through a conical necking pipe 1711, and the water distribution hole group 172 is arranged at the outer side position of the necking pipe 1711. The outside of two necking pipes 1711 is respectively sleeved with a water blocking sleeve 1712, the inner circumference of the water blocking sleeve 1712 is a conical surface 1713, and the water blocking sleeve is matched with the corresponding necking pipe 1711, after the water jacket is sleeved outside the necking pipe 1711, the conical surface 1713 on the inner side can cover and block the water distribution hole group 172, so that the water flow is limited. The water-blocking sleeves 1712 are movable and can slide relatively in the length direction of the pipeline, a buffer spring 1714 is elastically pressed between the two water-blocking sleeves 1712, the water-blocking sleeves 1712 are pressed on the necking pipe 1711 through the buffer spring 1714, and the water distribution hole group 172 is sealed by keeping a certain pressure; when the water pressure in the pipeline increases, the water sprayed from the water distribution hole group 172 pushes the conical surface 1713 at the inner side of the water distribution hole group, so that the water distribution hole group 1712 is opened against the pressure of the buffer spring 1714 to distribute water.
The water distribution brush groups 173 outside the water distribution portion 171 may be configured as a multi-layer structure, each water distribution brush group 173 includes an outer water distribution brush 1731 and an inner water distribution brush 1732, and the outer water distribution brush 1731 and the inner water distribution brush 1732 are supported by an inner elastic and hard framework, and bristles are fixed outside. Each outer water distribution brush 1731 and each inner water distribution brush 1732 are uniformly distributed in an annular array, and form a circumferential structure. The outer water distribution brush 1731 is fixedly connected to the outer periphery of one large diameter side of the necking pipe 1711, the inner water distribution brush 1732 is fixedly connected to the outer periphery of the corresponding water blocking sleeve 1712, when the water blocking sleeve 1712 moves up and down under the pushing of water pressure, the water blocking sleeve 1712 can move up and down, and when the water blocking sleeve moves, the carding can clean the inner wall of the supplementary catalytic pipe 141, so that certain dust is eliminated.
The structure of the water distribution portion 171 can be further optimized based on fig. 6, and referring to fig. 7, for the water distribution brush group 173, the end portion of the outer water distribution brush 1731 can be abutted against the inner wall of the supplementary catalytic tube 141, so that the two are kept in an abutting state all the time, and the bristles with fine front ends are mainly kept in abutting pressure; the number and the positions of the inner water distribution brushes 1732 on the two water blocking sleeves 1712 are up and down corresponding, and the outer ends of the inner water distribution brushes 1732 at the upper and lower corresponding positions are connected with each other and incline towards the opposite side; when the two water-blocking sleeves 1712 are mutually closed, the space between the inner ends of the inner water-distributing brushes 1732 is shortened, and the outer ends are slightly longer than the inner wall of the supplementary catalytic tube 141, so that the inner water-distributing brushes 1732 and the inner wall of the supplementary catalytic tube 141 can form certain propping pressure for cleaning.
Or, the structures of the inner water distribution brushes 1732 can also be connected according to the structure of fig. 7, the inner water distribution brushes 1732 at the upper and lower corresponding positions are mutually sleeved through elastic connecting sleeves 1734, the elastic connecting sleeves 1734 limit and keep certain activity at the same time, the outward end parts of the inner water distribution brushes 1732 are bent to the opposite sides to form forked shapes, the contact area between the end parts of the inner water distribution brushes 1732 and the inner wall of the supplementary catalytic tube 141 can be increased through the forked structure, and the cleaning effect on the inner tube wall is improved; and because the movable elastic connecting sleeve 1734 is adopted between the two inner water distribution brushes 1732 for limiting, when the two inner water distribution brushes 1732 are close to each other, the bending parts of the inner water distribution brushes 1732 are propped against each other, the outer ends of the inner water distribution brushes 1732 continue to outwards form a certain distance expansion, the size of forked fork openings is increased, the contact surface of the complementary catalytic tube 141 is improved, and the cleaning effect is improved.
On the basis of fig. 6, the structure of the water distribution portion 171 can be further optimized with reference to fig. 7 and 8, for the water distribution hole groups 172, the water distribution hole groups 172 can be arranged into multiple composite structures, each group of water distribution hole groups 172 comprises a plurality of water distribution holes one 1722 and two 1721, wherein the water distribution holes one 1722 are annularly distributed on one side of the necking tube 1711, which is close to the middle of the water distribution portion 171, the water blocking sleeve 1712 can completely cover the water distribution holes one 1722 after being sleeved, and the water distribution sleeve can be flushed for water distribution only after the water pressure has a certain magnitude; the second water distribution holes 1721 are annularly distributed at the position of the necking pipe 1711 close to the outer side of the water distribution part 171, the water blocking sleeve 1712 is under the action of the buffer spring 1714 and is completely sleeved on the necking pipe 1711, the water blocking sleeve 1712 only can partially cover the second water distribution holes 1721 downwards, and the second water distribution holes 1721 are in a long-open state, so that certain water can be always dispersed, and the water distribution brush group 173 can be dispersed, so that the micro water distribution effect can be maintained, the water consumption can be reduced, and different water distribution effects can be achieved under different water pressures. Because the second water distribution hole 1721 is located closer to the outer water distribution brush 1731 at the outer side, and the second water distribution hole 1721 can be inclined towards one side of the corresponding outer water distribution brush 1731, when a small amount of water is distributed, the scattered water can be more adhered to the water distribution brush hair, and a better water supplementing effect can be achieved.
On the basis of the water distribution hole group 172, the structure of the water distribution hole group 172 of the water distribution portion 171 may be further optimized, and other structures of the water distribution portion 171 may be adaptively optimized. The opposite ends of the two water-blocking sleeves 1712 are processed to form flaring conical surfaces 1716 which are in a horn mouth state; the water distribution hole group 172 further comprises a supplementary water distribution hole 1723, wherein the supplementary water distribution hole 1723 is positioned in the middle of the water distribution part 171, and the supplementary water distribution hole 1723 is annularly distributed at the periphery of the middle of the water distribution part 171; on one hand, the supplementary water distribution holes 1723 can be in a basically normally open state, the pore diameter of the water distribution holes is smaller, and fine water drops which are close to atomization can be stably sprayed out for water distribution; on the other hand, when the water pressure of the water distribution pipe 17 increases, the water distribution pipes are compressed to generate larger contraction, the water distribution pipes are mutually close towards the position of the water distribution supplementing hole 1723, water sprayed by the water distribution supplementing hole 1723 can push the position of the flaring conical surface 1716 on the water distribution pipe to play a role in supplementing and supporting, and then the water distribution supplementing hole is matched with the role of the buffer spring 1714 to form a certain floating and supporting effect, and the opening and closing conditions of holes in the water distribution hole group 172 can be dynamically switched through the floating water distribution pipe to form a more diffuse water distribution effect, so that the water distribution is fully and uniformly improved. And the outside of the water-blocking sleeve 1712 is fixed with a supporting ring 1715, and the buffer spring 1714 is sleeved and limited by the supporting ring 1715, so as to keep the stability of the buffer spring 1714.
Example five
The present embodiment discloses a blast furnace gas purifying treatment apparatus, and based on the above embodiments, the water replenishing scheme in the catalytic filter dust collector 8 will be described in detail with reference to fig. 5 and 11.
Two to three water distribution plates 174 are arranged at the lower side of each group of water distribution parts 171 on the water distribution pipe 17, and excessive water scattered by the water distribution pipes 17 is temporarily received through the water distribution plates 174; the water distribution plate 174 is in a tapered thin-wall structure with a middle part recessed downwards, and is fixed with the water distribution pipe 17 at the middle position. And a plurality of through holes 175 are formed in the water distribution plate 174, water received on the water distribution plate 174 can be uniformly and downwardly dripped and dispersed through the through holes 175, so that the dripping time of the water drops is prolonged, the contact time with hot gas is prolonged, and the water steaming efficiency is improved.
In order to increase the water distribution amount of the water distribution pipe 17, a water spraying head 176 is arranged at the uppermost end of the water distribution pipe 17, and a plurality of uniformly distributed water spraying holes 1761 are formed in the periphery of the water spraying head 176. The water spray hole 1761 can be an atomizing nozzle, so that atomized liquid drops can be sprayed, and the fineness of the water drops is improved; or the water spraying hole 1761 can be internally provided with the membrane 1762, the water spraying hole 1761 is axially separated by the membrane 1762, the length of the membrane 1762 is larger than that of the shifting piece membrane 1762 between the water spraying holes 1761, a bending state is formed in the water spraying hole 1761, the membrane 1762 is a flexible sheet body with elasticity, when the water spraying holes 1761 spray water, the membrane 1762 vibrates due to different pressure differences generated on two sides, the shaking effect is achieved on sprayed water, and the water distribution dispersity is improved to a certain extent.
An eccentric device 177 can be arranged at the lower side of the water distribution pipe 17 close to the water spraying head 176, the inner cavity of the eccentric device 177 is communicated with the water distribution pipe 17, and water flow in the water distribution pipe 17 flows through the inner cavity of the eccentric device 177; the impeller is arranged in the inner cavity of the eccentric device 177, the rotating shaft of the impeller is coaxial with the water distribution pipe 17, and the impeller can be driven to rotate by water flow when the water flow flows through the impeller. And the center of gravity of the impeller is deviated from the rotation axis, namely, the blade on one side of the impeller is heavier or lighter, eccentric oscillation is generated when the impeller rotates, and the whole water distribution pipe 17 can be driven to generate eccentric oscillation through the eccentric oscillation, so that the friction and the pressure between the periphery of the water distribution brush group 173 and the pipe wall of the supplementary catalytic pipe 141 are changed, and the pipe wall of the supplementary catalytic pipe 141 is more fully cleaned between the resisting and separating changes.
Example six
The present embodiment discloses a blast furnace gas purifying treatment device, and based on the above embodiments, the water replenishing scheme in the catalytic filter dust collector 8 will be described in detail with reference to fig. 4 to 6.
In the supplementary catalytic tube 141, the water distribution tube 17 may be installed in a liftable form, and the lower end of the water distribution tube 17 extends out of the supplementary catalytic tube 141 and is installed and supported by a liftable lifting frame 18. A plurality of lifting rods 181 are fixed at the lower part of the treatment cylinder, and lifting ends 182 of the lifting rods 181 extend into the treatment tower 10 and are fixedly connected with the lifting frames 18, and the lifting frames 18 and the water distribution pipes 17 on the lifting frames 18 can be driven to lift by driving of the lifting rods 181. The water distribution part 171 outside the water distribution pipe 17 can be driven to distribute water on the inner walls of the supplementary catalytic pipes 141 at different positions through the water distribution pipe 17 which can be lifted and lowered movably, and the supplementary catalytic pipes 141 are cleaned and dedusted through the water distribution brush group 173, so that the cleaning of the whole pipe is almost realized.
A water supply pipe 19 is arranged at the lower end of the lifting frame 18, water is supplied to each water distribution pipe 17 through the water supply pipe 19, and the water supply pipes 19 are respectively connected with the water distribution pipes 17 through water supply joints 191; the water supply pipe 19 is connected with an external water source through a hose 192 to supply water, and the water is supplied through a relatively flexible pipeline, so that stable water supply of the water distribution pipe 17 can be maintained.
The water distribution pipes 17 and the lifting frames 18 are connected through guide barrels 183, the guide barrels 183 are arranged at positions, corresponding to the water distribution pipes 17, on the lifting frames 18 one by one, the peripheries of the guide barrels 183 are fixedly connected to the lifting frames 18, guide cavities 1831 through which the water distribution pipes 17 penetrate are formed in the guide barrels 183, two guide limiting blocks 1836 are fixed at the edges of two ends of the guide cavities 1831, annular stop blocks 1832 are fixed on the peripheries of the water distribution pipes 17 between the two guide limiting blocks 1836, and the lifting amplitude of the water distribution pipes 17 relative to the lifting frames 18 is limited through the guide limiting blocks 1836 and the annular stop blocks 1832; and a supporting spring 1833 is elastically pressed between the stop block 1832 and the lower guide limiting block 1836, and the water distribution pipe 17 is supported to a certain extent by the supporting spring 1833, so that the water distribution pipe 17 forms an elastic floating structure, certain floating adjustment is performed according to the magnitude of the friction force in the lifting process, and the damage of the lifting amplitude to the uppermost pipe wall of the supplementary catalytic pipe 141 due to the overhigh lifting amplitude is avoided.
The water distribution pipe 17 can float and simultaneously can rotate the water distribution pipe 17 to a certain extent; a guiding protruding block 1835 is fixed on the inner side of the guiding limiting block 1836 at the upper side, a spiral groove is formed at the position of the water distribution pipe 17 corresponding to the guiding protruding block 1835, the guiding protruding block 1835 is accommodated by the spiral groove, and a mutually guiding adaptive structure is formed between the spiral groove and the guiding protruding block 1835 for rotationally guiding the floating action of the water distribution pipe 17. The lower end of the water distribution pipe 17 is connected with the water supply pipe 19 through a rotatable water supply joint 191, so that stable connection water supply can be maintained when the water distribution pipe 17 is rotatably regulated to a certain degree.
When the lifting frame 18 drives the water distribution pipe 17 to stably ascend, the supporting spring 1833 in the guide cylinder 183 stably supports the water distribution pipe 17, and the water distribution pipe 17 keeps a stable state; when the lifting speed of the lifting frame 18 is changed or the frictional resistance on the outer side of the water distribution pipe 17 is increased, the compression degree of the supporting spring 1833 is changed, the water distribution pipe 17 moves relatively to the guide cylinder 183 in production lifting, and at the moment, the water distribution pipe 17 is driven to rotate in a certain floating mode under the spiral guiding action between the spiral groove and the guide convex block 1835. By lifting and rotating the water distribution pipe 17, the water distribution position on the water distribution pipe 17 and the movement of the water distribution brush group 173 are driven, so that the water distribution uniformity in the supplementary catalytic pipe 141 is improved and the cleaning effect on the supplementary catalytic pipe 141 is improved. Moreover, if the eccentric device 177 is arranged on the water distribution pipe 17 of the device, the eccentric device 177 generates oscillation, so that the eccentric oscillation of the water distribution pipe 17 is driven to generate pressure and friction force changes with the pipe wall, and the water distribution pipe 17 generates stable and uniform change motions by matching with the supporting spring 1833 and the rotary guide structure. The cleaning and moisturizing effect on the supplementary catalytic tube 141 is maintained.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (9)
1. The blast furnace gas purifying treatment device is characterized by comprising a blast furnace (1), a cyclone dust collector (2), a catalytic filter dust collector (8), a TRT residual pressure recovery turbine power generation device (5), a pressure reducing valve group (6) and an alkali spraying tower (7); the catalytic filter dust remover comprises a treatment tower (10), wherein the lower end of the treatment tower (10) is provided with an air inlet pipe (11) connected with a blast furnace (1), and the upper end of the treatment tower is provided with an air outlet pipe (12) connected with a TRT residual pressure recovery turbine power generation device (5) and a pressure reducing valve group (6); a catalytic filter layer (16) is arranged in the treatment tower (10), the catalytic filter layer (16) comprises a plurality of catalytic filter pipes (161), a supplementary catalytic layer (14) is arranged above the catalytic filter layer (16), the supplementary catalytic layer (14) comprises a plurality of supplementary catalytic pipes (141) fixed through a supporting frame (142), the catalytic filter layer (16) is used for filtering dust in blast furnace gas and hydrolyzing organic sulfur in catalytic gas, and the supplementary catalytic layer (14) is used for further hydrolyzing residual organic sulfur in catalytic gas; the alkali spraying tower (7) is used for washing and removing inorganic sulfur and acid pollutants in the gas by spraying alkali liquor;
a water distribution pipe (17) is arranged in a treatment cavity (144) of the supplementing catalytic pipe (141), a plurality of groups of water distribution parts (171) are arranged on the water distribution pipe (17) along the length direction, the water distribution parts (171) are used for supplementing water into the treatment cavity (144), and the water supplemented by the water distribution pipe (17) is contacted with high-temperature blast furnace gas in the treatment cavity (144) to be evaporated to form steam;
two groups of water distribution hole groups (172) are formed in the water distribution part (171) of the water distribution pipe (17), water is sprayed out of the water distribution control groups through water pressure in the water supplementing pipe and is dispersed into the water supplementing catalytic pipe (141), and the sprayed water can wash and act on the inner wall of the water supplementing catalytic pipe (141); the water distribution pipe (17) is provided with a water distribution brush group (173) corresponding to the upper side and the lower side of the water distribution part (171), and the water distribution brush group (173) is provided with a plurality of bristles;
the side wall of the water distribution pipe (17) is provided with a pore canal, and a nozzle structure is arranged in the pore canal to form a structure capable of spraying water; the pore passages of the two water distribution hole groups (172) are in an inclined state of expanding or converging towards the outer sides in opposite directions, and the sprayed water can be attached to the brush hair;
the pipe diameter at the position of the water distribution part (171) is thinner than that at other positions of the water distribution pipe (17), the water distribution part (171) and the water distribution pipe (17) are in transitional connection through a conical necking pipe (1711), and the water distribution hole group (172) is arranged at the outer side position of the necking pipe (1711); the water blocking sleeves (1712) are sleeved on the outer sides of the two necking pipes (1711), the inner circumferences of the water blocking sleeves (1712) are conical surfaces (1713) and are matched with the corresponding necking pipes (1711), and after the water blocking sleeves (1712) are sleeved outside the necking pipes (1711), the conical surfaces (1713) on the inner sides of the water blocking sleeves can cover the water distribution hole groups (172) to limit the water flow from being sprayed out; the water-blocking sleeves slide relatively in the length direction of the pipeline, a buffer spring (1714) is elastically pressed between the two water-blocking sleeves (1712), the water-blocking sleeves (1712) are pressed on the necking pipe (1711) through the buffer spring (1714), and the water distribution hole group (172) is sealed by keeping a certain pressure; when the water pressure in the pipeline is increased, water sprayed from the water distribution hole group (172) pushes the conical surface (1713) on the inner side of the water blocking sleeve (1712), so that the water blocking sleeve (1712) is displaced inwards, the water blocking sleeve (1712) is opened against the pressure of the buffer spring (1714), and water distribution is realized;
the water distribution brush groups (173) at the outer side of the water distribution part (171) are arranged into a multi-layer structure, each water distribution brush group (173) comprises an outer water distribution brush (1731) and an inner water distribution brush (1732), and the outer water distribution brush (1731) and the inner water distribution brush (1732) are formed by taking an inner elastic and hard framework as a support and fixing bristles at the outer side.
2. The blast furnace gas purification treatment device according to claim 1, wherein the catalytic filter pipes (161) are installed through a second sealing isolation frame (162), the upper side and the lower side of the second sealing isolation frame (162) are sealed, and the catalytic filter pipes (161) are internally provided with ceramic fibers for supporting catalysts.
3. The blast furnace gas purifying treatment device according to claim 1, wherein a uniform distribution layer (15) is arranged between the supplementary catalytic layer (14) and the catalytic filter layer (16), and a plurality of uniformly distributed uniform distribution holes (151) are formed in the uniform distribution layer (15).
4. The blast furnace gas purifying treatment device according to claim 1, wherein the tube wall of the supplementary catalytic tube (141) is made of ceramic fiber, and a catalyst is supported in the tube wall.
5. The blast furnace gas cleaning apparatus according to claim 4, wherein the catalyst is an aluminum-based catalyst or a titanium-based catalyst or a mixture of both.
6. A blast furnace gas cleaning device according to claim 1, characterized in that a layer of guide plate (13) for uniformly spreading the gas flow is arranged above the gas inlet pipe (11), and a plurality of steam spray pipes (131) are arranged on the lower side of the guide plate (13).
7. The blast furnace gas purifying treatment device according to claim 1, wherein a first sealing and isolating frame (143) is arranged at the lower end of the supplementary catalytic tube (141), the upper side and the lower side of the first sealing and isolating frame (143) are sealed and isolated, the lower end of the supplementary catalytic tube (141) extends downwards to the lower side of the first sealing and isolating frame (143), and a treatment cavity (144) with a closed upper end and an open lower end is arranged in the supplementary catalytic tube (141).
8. A blast furnace gas purifying treatment device according to claim 1, wherein the lower end of the water distribution pipe (17) extends out of the supplementary catalytic pipe (141) and is supported by a lifting frame (18) capable of lifting, a plurality of lifting rods (181) are fixed at the lower part of the treatment tower, and the lifting ends (182) of the lifting rods (181) extend into the treatment tower (10) and are fixedly connected with the lifting frame (18); the lower end of the lifting frame (18) is provided with a water supply pipe (19), the water supply pipe (19) is respectively connected with the water distribution pipe (17) through a water supply joint (191), and the water supply pipe (19) is connected with an external water source through a hose (192).
9. The blast furnace gas purifying treatment device according to claim 8, wherein the water distribution pipe (17) is installed on the lifting frame (18) through a guide cylinder (183), the periphery of the guide cylinder (183) is fixedly connected with the lifting frame (18), a guide cavity (1831) for the water distribution pipe (17) to pass through is arranged in the guide cylinder (183), two guide limiting blocks (1836) are arranged at the edges of two ends of the guide cavity (1831), an annular stop block (1832) is fixed on the periphery of the water distribution pipe (17) between the two guide limiting blocks (1836), and a supporting spring (1833) is elastically pressed between the stop block (1832) and the lower guide limiting block (1836); the inside of the guide limiting block (1836) at the upper side is fixedly provided with a guide lug (1835), the position of the water distribution pipe (17) corresponding to the guide lug (1835) is provided with a spiral groove for accommodating the guide lug (1835), the spiral groove is mutually matched with the guide lug (1835) and used for rotationally guiding the water distribution pipe (17), and the lower end of the water distribution pipe (17) is connected with a water supply pipe (19) through a rotatable water supply joint (191).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110643395A (en) * | 2019-10-15 | 2020-01-03 | 北京北科环境工程有限公司 | Blast furnace gas fine desulfurization process |
| CN111659249A (en) * | 2020-07-06 | 2020-09-15 | 江苏集萃托普索清洁能源研发有限公司 | Low ammonia escape desulfurization denitration dust collector |
| CN112195043A (en) * | 2020-09-28 | 2021-01-08 | 武汉钢铁有限公司 | Blast furnace gas desulfurization method and device |
| CN113046138A (en) * | 2021-03-25 | 2021-06-29 | 武汉轻工大学 | High-efficiency desulfurization device and method for blast furnace gas |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110643395A (en) * | 2019-10-15 | 2020-01-03 | 北京北科环境工程有限公司 | Blast furnace gas fine desulfurization process |
| CN111659249A (en) * | 2020-07-06 | 2020-09-15 | 江苏集萃托普索清洁能源研发有限公司 | Low ammonia escape desulfurization denitration dust collector |
| CN112195043A (en) * | 2020-09-28 | 2021-01-08 | 武汉钢铁有限公司 | Blast furnace gas desulfurization method and device |
| CN113046138A (en) * | 2021-03-25 | 2021-06-29 | 武汉轻工大学 | High-efficiency desulfurization device and method for blast furnace gas |
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