CN218665930U - Treatment device for dechlorination and hydrolysis desulfurization of blast furnace gas - Google Patents
Treatment device for dechlorination and hydrolysis desulfurization of blast furnace gas Download PDFInfo
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- CN218665930U CN218665930U CN202223469272.5U CN202223469272U CN218665930U CN 218665930 U CN218665930 U CN 218665930U CN 202223469272 U CN202223469272 U CN 202223469272U CN 218665930 U CN218665930 U CN 218665930U
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Abstract
The application discloses a processing device for dechlorination and hydrolysis desulfurization of blast furnace gas, which comprises a dechlorination tower, a hydrolysis adsorption tower, a heat collector, a temperature rising device and a circulating pool, wherein the dechlorination tower is connected with the hydrolysis adsorption tower through a pipeline; the dechlorination tower comprises a dechlorination inlet, a dechlorination outlet, a dechlorination circulating inlet and a liquid outlet; the hydrolysis adsorption tower comprises a hydrolysis adsorption inlet and a hydrolysis adsorption outlet; the heat collector is provided with a heat collecting cavity, the heat collecting cavity is provided with a coal gas inlet and a coal gas outlet, and a first heat exchange pipeline is arranged in the heat collecting cavity; the temperature rising device is provided with a heat exchange cavity, a gas input port and a temperature rising gas output port are arranged on the heat exchange cavity, a second heat exchange pipeline is arranged in the heat exchange cavity, and the first heat exchange pipeline is communicated with the second heat exchange pipeline for heat exchange; the coal gas outlet is connected with the dechlorination inlet, the dechlorination outlet is connected with the coal gas inlet, and the heating coal gas outlet is connected with the hydrolysis adsorption inlet. The treatment device provided by the application recovers and exchanges heat of the blast furnace gas at the front end of treatment, and reduces the treatment cost and energy consumption of gas heating.
Description
Technical Field
The application relates to the technical field of blast furnace gas treatment equipment, in particular to a treatment device for dechlorination and hydrolytic desulfurization of blast furnace gas.
Background
The blast furnace is an important and indispensable processing link in the process of smelting iron ores, cokes and the like into steel in a steel plant. Along with the smelting process of the blast furnace, a combustible gas with high dust content, namely blast furnace gas, is produced as a byproduct, and the main components of the blast furnace gas except the dust are CO and CO 2 、N 2 Small amount of sulfide and CL - And the like. The blast furnace gas is used as a byproduct combustible gas in the blast furnace ironmaking production process, has large yield and wide application, and can be used as a fuel for a power plant boiler, an iron-making plant hot blast stove and a steel-making plant heating furnace.
Because blast furnace gas generated in the blast furnace ironmaking process is directly used as fuel of a power plant boiler, an iron-making plant hot blast stove and a steel-making plant heating furnace after being subjected to dry dedusting and purification treatment, SO in the flue gas emission of the power plant boiler, the iron-making plant hot blast stove and the steel-making plant heating furnace is caused 2 The content of SO in the flue gas can not meet the national ultra-clean emission requirement, and the SO in the flue gas is generally discharged 2 The content is more than 50mg/m 3 Some production plants discharge SO in flue gas 2 Even up to 250mg/m 3 The above. Therefore, there is a strong demand for desulfurization treatment of blast furnace gas. And the blast furnace gas which is not subjected to desulfurization and dechlorination treatment can cause serious corrosion to gas conveying pipelines and equipment, and great harm is brought to the equipment maintenance and production safety of pipelines and gas users. In order to realize the dechlorination of the blast furnace gas, a dechlorinating tower is used for dechlorinating the blast furnace gas in the prior art.
In order to achieve the standard emission of the exhaust gas before and after the combustion of the blast furnace gas, steel enterprises construct different types of dedusting, hydrolyzing and desulfurizing systems with great cost. Firstly, the dust in the blast furnace gas is physically filtered by a pulse bag dust removal system, then the blast furnace gas enters a dechlorination tower for dechlorination, then the blast furnace gas enters a hydrolysis system for organic sulfur (COS) in the gasHydrolyzing to Convert Organic Sulfur (COS) which is not easy to be removed into inorganic sulfur-hydrogen sulfide (H) 2 S), the blast furnace gas after dust removal and hydrolysis enters a desulfurization system to remove hydrogen sulfide (H) 2 S) removing.
The sulfur in the blast furnace gas mainly comprises COS and H 2 S takes up a small part. The existing desulfurization system can perform desulfurization treatment on sulfide in Blast Furnace Gas through hydrolysis and adsorption, but the existing desulfurization system is connected with a Blast Furnace Gas Top pressure Turbine power generation device (TRT for short) and is positioned at the downstream of a dechlorination tower, the temperature of the Gas can be reduced to below 60 ℃ after passing through the dechlorination tower, so that the desulfurization system is positioned in a low-temperature area, and the temperature range cannot meet the requirement of carbonyl sulfide (COS) hydrolysis (COS + H) 2 O→H 2 S+CO 2 ) The requirements of (1). Therefore, the temperature of the gas entering the desulfurization system needs to be raised to promote the reaction. At present, the heating of the coal gas entering the desulfurization system needs to be additionally carried out by adopting high-temperature steam (generally about 160 ℃) to heat the coal gas, which undoubtedly increases the treatment cost of the blast furnace coal gas desulfurization system.
Therefore, it is necessary to provide a new technical solution to solve the problems in the prior art.
SUMMERY OF THE UTILITY MODEL
The application provides a processing apparatus for blast furnace gas dechlorination and hydrolysis desulfurization to solve the problem that the processing cost is high for realizing that gas heating promotes hydrolysis in the blast furnace gas desulfurization system at present.
In order to achieve the above purpose, the present application provides the following technical solutions:
the application provides a processing device for dechlorination and hydrolysis desulfurization of blast furnace gas, which comprises a dechlorination tower, a hydrolysis adsorption tower, a heat collector, a temperature rising device and a circulating tank, wherein the dechlorination tower is connected with the hydrolysis adsorption tower through a pipeline;
the dechlorination tower comprises a dechlorination inlet, a dechlorination outlet, a dechlorination circulating inlet and a liquid outlet;
the hydrolysis adsorption tower comprises a hydrolysis adsorption inlet and a hydrolysis adsorption outlet, and is used for performing hydrolysis adsorption on sulfur in blast furnace gas entering the hydrolysis adsorption tower;
the heat collector is provided with a heat collecting cavity, a coal gas inlet and a coal gas outlet are arranged on the heat collecting cavity, a first heat exchange pipeline is arranged in the heat collecting cavity, and two ends of the first heat exchange pipeline respectively extend out of the heat collecting cavity to form a heat sending port and a recovery port; the temperature rising device is provided with a heat exchange cavity, a coal gas input port and a temperature rising coal gas output port are arranged on the heat exchange cavity, a second heat exchange pipeline is arranged in the heat exchange cavity, and two ends of the second heat exchange pipeline respectively extend out of the heat exchange cavity to form a heat exchange inlet and a heat exchange outlet; the heat supply port is connected with the heat exchange inlet through a heat source circulating pump, and the recovery port is connected with the heat exchange outlet;
the gas-liquid separation device is characterized in that a pressure regulating valve group and/or a turbine set are arranged between the gas outlet and the dechlorination inlet, the dechlorination outlet is connected with the gas inlet, the heating gas outlet is connected with the hydrolysis adsorption inlet, the dechlorination circulation inlet is connected with the circulation tank through a dechlorination circulation pump, and dechlorination circulation liquid is filled in the circulation tank.
In the technical scheme, a pressure regulating valve bank and a turbine set are connected between a coal gas outlet of the heat collector and a dechlorination inlet of the dechlorination tower; the pressure regulating valve group is provided with an input end and an output end, the turbine unit is provided with an inlet end and an outlet end, the input end and the inlet end are respectively connected with a coal gas outlet of the heat collector, and the output end and the outlet end are respectively connected with a dechlorinating inlet of the dechlorinating tower.
Furthermore, the hydrolysis adsorption outlet is connected with the dechlorination inlet through a bypass pipeline, a coal gas bypass device is arranged on the bypass pipeline, and the coal gas bypass device comprises a valve.
Further, the dechlorination tower is provided with a dechlorination cavity, and a coal gas inlet conduit, a liquid atomizer and a demister are sequentially arranged in the dechlorination cavity from bottom to top; the coal gas inlet conduit is communicated with a dechlorination inlet, and the dechlorination outlet is arranged at the top of the dechlorination cavity; the liquid atomizer with dechlorination circulation import links to each other, dechlorination circulation liquid in the circulation pond passes through dechlorination circulation import gets into in the liquid atomizer, the liquid atomizer is used for atomizing the dechlorination circulation liquid that gets into it.
Furthermore, the bottom of the dechlorination cavity is of a cone structure, the liquid outlet is formed in the cone top, and the liquid outlet is connected with the circulation tank through a liquid external discharger.
Furthermore, the circulating pool is provided with a liquid inlet, a liquid outlet, a circulating outlet and a circulating inlet; the liquid inlet is connected with an external liquid storage device through a delivery pump; the liquid discharge port is close to the bottom of the circulating pool, a liquid discharge pipeline is installed at the liquid discharge port, and a wastewater discharge pump is installed on the liquid discharge pipeline; the circulating outlet is close to the bottom of the circulating pool and is connected with the dechlorination circulating inlet through the dechlorination circulating pump; the circulation inlet is connected with the liquid discharge port.
Furthermore, the hydrolysis adsorption tower is provided with a water desorption cavity, the top and the bottom of the water desorption cavity are both in a cone structure, the hydrolysis adsorption inlet is arranged at the bottom of the water desorption cavity, and the hydrolysis adsorption outlet is arranged at the top of the water desorption cavity.
Furthermore, two coal gas uniform distribution plates are oppositely arranged in the hydrolysis adsorption cavity, and the plate surfaces of the coal gas uniform distribution plates are vertical to the central axis of the hydrolysis adsorption cavity; a hydrolytic agent is arranged between the two coal gas uniform distribution plates, and an adsorbent is arranged above the coal gas uniform distribution plate close to the top of the hydrolytic adsorption tower.
Furthermore, a plurality of through holes are uniformly formed in the coal gas uniform distribution plate.
Furthermore, a medium input port is arranged on the first heat exchange pipeline, the medium input port is connected with an external medium storage device pipeline, a valve is arranged on the pipeline for connecting the medium input port with the external medium storage device, the external medium storage device is used for conveying a medium into the first heat exchange pipeline, and the medium is a fluid.
Further, the first heat exchange pipeline is communicated with the second heat exchange pipeline, and the heat collector performs heat exchange and temperature rise on a medium in the first heat exchange pipeline through blast furnace gas entering the heat collector; and the temperature rising device carries out heat exchange and temperature rising on blast furnace gas entering the temperature rising device through the medium in the second heat exchange pipeline.
Further, the medium is water.
Compared with the prior art, the method has the following beneficial effects:
the utility model provides a processing apparatus for blast furnace gas dechlorination and hydrolysis desulfurization has set up heat collector and intensifier among this application, and the heat collector is used for getting out the heat replacement in the blast furnace gas that gets into it to export to the intensifier in, the intensifier heats up the blast furnace gas that gets into it through this heat, and the blast furnace gas after the intensification is being carried to the absorption tower that hydrolysises. The treatment device provided by the application realizes the recycling of heat of high-temperature coal gas (detected, the temperature of the high-temperature coal gas in front of the pressure regulating valve bank or the turbine unit can reach 140-250 ℃) in front of the pressure regulating valve bank or the turbine unit through the arrangement of the heat collector and the temperature rising device. Compare and adopt extra high-temperature steam to heat up the coal gas that gets into desulfurization system among the prior art, the processing apparatus that this application provided retrieves the self heat of the blast furnace gas of handling the front end, has realized the intensification to the coal gas that gets into desulfurization system through the heat transfer, has reduced the cost and the energy consumption of the high-temperature steam of extra input.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. It should be understood that the specific shapes, configurations and illustrations in the drawings are not to be construed as limiting, in general, the practice of the present application; for example, it is within the ability of those skilled in the art to make routine adjustments or further optimizations based on the technical concepts disclosed in the present application and the exemplary drawings, for the increase/decrease/attribution of certain units (components), specific shapes, positional relationships, connection manners, dimensional ratios, and the like.
Fig. 1 is a schematic structural diagram of a processing apparatus for dechlorinating and hydrolyzing desulfurization of blast furnace gas according to an embodiment of the present disclosure.
Description of reference numerals:
1. a dechlorination tower; 2. a hydrolysis adsorption tower; 3. a heat collector; 4. a temperature rising device; 5. a heat source circulating pump; 6. a dechlorination inlet; 7. a dechlorination outlet; 8. a hydrolysis adsorption inlet; 9. a hydrolysis adsorption outlet; 10. a gas bypass device; 11. a delivery pump; 12. a circulation tank; 13. dechlorination circulating liquid; 14. a dechlorination circulating pump; 15. a wastewater discharge pump; 16. a liquid drainer; 17. a dechlorination circulating inlet; 18. a liquid atomizer; 19. a demister; 20. a hydrolyzing agent; 21. an adsorbent; 22. a gas uniform distribution plate; 23. a pressure regulating valve bank; 24. a turbine unit;
A. blast furnace gas input direction; B. the discharge direction of blast furnace gas; C. the wastewater discharge direction of the circulating tank; D. the input direction of dechlorination liquid; E. the medium flowing direction in the first heat exchange pipeline in the heat collector.
Detailed Description
The present application will be described in further detail below with reference to specific embodiments thereof, with reference to the accompanying drawings.
In the description of the present application: "plurality" means two or more unless otherwise specified. The terms "first", "second", "third", and the like in this application are intended to distinguish one referenced item from another without having a special meaning in technical connotation (e.g., should not be construed as emphasizing a degree or order of importance, etc.). The terms "comprising," "including," "having," and the like, are intended to be inclusive and mean "not limited to" (some elements, components, materials, steps, etc.).
In the present application, terms such as "upper", "lower", "left", "right", "middle", and the like are usually used for the purpose of visual understanding with reference to the drawings, and are not intended to be an absolute limitation of the positional relationship in an actual product. Changes in these relative positional relationships are also considered to be within the scope of the present disclosure without departing from the technical concepts disclosed in the present disclosure.
In order to solve the problems existing in the prior art, the application provides a processing device for dechlorinating and hydrolysis and desulfurization of blast furnace gas, so that the cost of investment for realizing heating and promoting hydrolysis of the gas in the prior art is reduced, and the energy consumption is reduced. The structure and principle of the processing apparatus will be described with reference to fig. 1.
Referring to fig. 1, the present application provides a processing apparatus for blast furnace gas dechlorination and hydrolysis desulphurization, which comprises a dechlorination tower 1, a hydrolysis adsorption tower 2, a heat collector 3, a temperature increasing device 4 and a circulation tank 12. Wherein: the dechlorination tower 1 comprises a dechlorination inlet 6, a dechlorination outlet 7, a dechlorination circulating inlet 17 and a liquid outlet, and the dechlorination tower 1 is used for removing chlorine in blast furnace gas entering the dechlorination tower. The hydrolysis adsorption tower 2 comprises a hydrolysis adsorption inlet 8 and a hydrolysis adsorption outlet 9, and the hydrolysis adsorption tower 2 is used for performing hydrolysis adsorption on sulfur in blast furnace gas entering the hydrolysis adsorption tower. The treatment device provided by the application realizes the integrated treatment of dechlorination, hydrolysis and desulfurization of blast furnace gas through the dechlorination tower 1 and the hydrolysis adsorption tower 2, and is mainly used for removing harmful substances such as chloride ions and sulfides (sulfides are mainly COS) in the blast furnace gas of a steel mill. The alkali liquor (NaOH) atomized in the dechlorinating tower 1 and chloride ions are subjected to chemical reaction and absorbed into the dechlorinating solution, and meanwhile, dust in coal gas can be removed, so that the adverse effects of the chloride ions and the dust in the coal gas on downstream equipment and the hydrolytic agent 20 are relieved. The sulfide (mainly COS) is not easy to remove, and needs to be hydrolyzed into hydrogen sulfide (COS + H) by a hydrolyzing agent 20 2 O→H 2 S+CO 2 ) Then, the hydrogen sulfide is absorbed by the adsorbent 21, thereby removing the sulfide. Since the temperature of the blast furnace gas after passing through the dechlorinating tower 1 is reduced to 60 ℃ or lower, and the temperature of the gas cannot meet the requirement of carbonyl sulfide (COS) hydrolysis, the temperature of the blast furnace gas entering the water desorption tower 2 needs to be increased.
In order to increase the temperature of blast furnace gas entering the water desorption tower 2, promote hydrolysis and ensure desulfurization effect, the treatment device provided by the application is provided with the heat collector 3 and the temperature rising device 4, mainly recovers the heat of high-temperature gas (140-250 ℃) in front of a pressure regulating valve group or a turbine set, realizes the reutilization of recovered heat in a heat exchange mode, and reduces the cost for realizing the temperature rise of the blast furnace gas entering the water desorption tower 2 and promoting hydrolysis of the gas while effectively increasing the temperature of the blast furnace gas. After all, in the prior art, high-temperature steam (generally about 160 ℃) needs to be additionally adopted to heat and raise the temperature of the coal gas, for example, a steam heat exchanger, and after the steam heat exchanger is put into use, the steam generation cost of the steam heat exchanger, the manufacturing or outsourcing of the steam heat exchanger, the subsequent installation, maintenance and other use costs are additional costs of the blast furnace gas desulfurization treatment.
Referring to fig. 1, a heat collector 3 of the processing apparatus provided by the present application has a heat collecting cavity, a gas inlet and a gas outlet are provided on the heat collecting cavity, a first heat exchange pipeline is provided in the heat collecting cavity, and two ends of the first heat exchange pipeline respectively extend out of the heat collecting cavity to form a heat feeding port and a heat recovery port. The first heat exchange pipeline is provided with a medium inlet, the medium inlet is connected with a pipeline of an external medium storage device, a valve is arranged on the pipeline for connecting the medium inlet and the external medium storage device, the external medium storage device is used for conveying a medium into the first heat exchange pipeline, and the medium is a fluid.
The temperature rising device 4 of the treatment device provided by the application is provided with a heat exchange cavity, a gas input port and a temperature rising gas output port are arranged on the heat exchange cavity, a second heat exchange pipeline is arranged in the heat exchange cavity, and two ends of the second heat exchange pipeline respectively extend out of the heat exchange cavity to form a heat exchange inlet and a heat exchange outlet; the heat supply port is connected with the heat exchange inlet through a heat source circulating pump 5, and the recovery port is connected with the heat exchange outlet.
The heat collector 3 of the treatment device provided by the application carries out heat exchange and temperature rise on the medium in the first heat exchange pipeline through blast furnace gas entering the heat collector; the temperature rising device 4 carries out heat exchange and temperature rising on blast furnace gas entering the temperature rising device through the medium in the second heat exchange pipeline.
In one embodiment, the medium in the first and second heat exchange tubes may be water.
The application provides a processing apparatus carries out the heat transfer through getting high temperature coal gas before heat exchanger 3 to pressure regulating valves or turbo set, through the medium in the high temperature coal gas heating heat transfer pipeline, then sends the medium to intensification ware 4 with heat source circulating pump 5, and the medium after being heated heaies up the coal gas of low temperature section again. Through the internal test of the applicant, the treatment device provided by the application can heat the blast furnace gas entering the water desorption tower 2 to a temperature range (T is more than or equal to 80 ℃ and less than or equal to 100 ℃) which can be hydrolyzed. Referring to fig. 1, the medium cooled down after heat exchange in the temperature rising device 4 circulates to the heat collector 3 for heat exchange, and then goes to the temperature rising device 4 for temperature rising of the coal gas, so as to realize circulating operation.
In one embodiment, a pressure regulating valve bank and/or a turbine set are arranged between the gas outlet of the heat collector 3 and the dechlorination inlet 6; the dechlorination outlet 7 is connected with a coal gas inlet of the temperature rising device 4; the heating gas output port is connected with the hydrolysis adsorption inlet 8; the dechlorination circulating inlet 17 is connected with the circulating tank 12 through a dechlorination circulating pump 14, and dechlorination circulating liquid 13 is filled in the circulating tank 12.
In one embodiment, referring to fig. 1, a pressure regulating valve bank and a turbine set are connected between a coal gas outlet of the heat collector 3 and a dechlorination inlet 6 of the dechlorination tower 1; the pressure regulating valve group is provided with an input end and an output end, the turbine unit is provided with an inlet end and an outlet end, the input end and the inlet end are respectively connected with a coal gas outlet of the heat collector 3, and the output end and the outlet end are respectively connected with a dechlorination inlet 6 of the dechlorination tower 1. The pressure regulating valve bank and the turbine set are all existing production facilities in a steel mill.
In one embodiment, the hydrolysis adsorption outlet 9 and the dechlorination inlet 6 are connected by a bypass pipeline, a gas bypass device 10 is arranged on the bypass pipeline, and the gas bypass device 10 comprises a valve. The arrangement of the bypass pipeline can facilitate the maintenance of the whole device.
In one embodiment, referring to fig. 1, the dechlorination tower 1 has a dechlorination chamber, in which a gas inlet conduit, a liquid atomizer 18 and a demister 19 are arranged from bottom to top; the coal gas inlet conduit is communicated with a dechlorination inlet 6, and a dechlorination outlet 7 is arranged at the top of the dechlorination cavity; the liquid atomizer 18 is connected with the dechlorination circulating inlet 17, dechlorination circulating liquid 13 in the circulating pool 12 enters the liquid atomizer 18 through the dechlorination circulating inlet 17, and the liquid atomizer 18 is used for atomizing the dechlorination circulating liquid 13 entering the liquid atomizer 18. The bottom of the dechlorination cavity is of a cone structure, a liquid outlet is formed in the top of the cone, the liquid outlet is connected with the circulation tank 12 through a liquid discharger 16, dechlorination circulation liquid 13 which is atomized and condensed in the dechlorination tower 1 and flows out is discharged to the circulation tank 12 from the liquid discharger 16, and the cyclic use of the dechlorination circulation liquid 13 is realized.
In one embodiment, referring to FIG. 1, the circulation tank 12 has a liquid inlet, a liquid outlet, a circulation outlet, and a circulation inlet; the liquid inlet is connected with an external liquid storage device through a delivery pump 11; the liquid discharge port is close to the bottom of the circulating pool 12, a liquid discharge pipeline is arranged at the liquid discharge port, and a wastewater discharge pump 15 is arranged on the liquid discharge pipeline; the circulating outlet is close to the bottom of the circulating tank 12 and is connected with a dechlorination circulating inlet 17 through a dechlorination circulating pump 14; the circulation inlet is connected to the liquid discharge outlet.
In one embodiment, referring to fig. 1, the hydrolysis adsorption tower 2 has a water desorption cavity, the top and the bottom of the water desorption cavity are both in a cone-shaped structure, the hydrolysis adsorption inlet 8 is arranged at the bottom of the water desorption cavity, and the hydrolysis adsorption outlet 9 is arranged at the top of the water desorption cavity. Two coal gas uniform distribution plates 22 are oppositely arranged in the hydrolysis adsorption cavity, the plate surfaces of the coal gas uniform distribution plates 22 are vertical to the central axis of the water desorption cavity, and a plurality of through holes are uniformly formed in the coal gas uniform distribution plates 22; a hydrolytic agent 20 is arranged between the two coal gas uniform distribution plates 22, and an adsorbent 21 is arranged above the coal gas uniform distribution plate 22 close to the top of the hydrolytic adsorption tower 2.
The utility model provides a processing apparatus for blast furnace gas dechlorination and hydrolysis desulfurization has set up heat collector and intensifiers in this application, and the heat collector is used for getting out the heat replacement in the blast furnace gas that gets into it to export to the intensifiers, and the intensifiers heats up the blast furnace gas that gets into it through this heat, and the blast furnace gas after the intensification is being carried to the hydrolysis adsorption tower. The treatment device provided by the application realizes the recycling of heat of high-temperature coal gas (detected, the temperature of the high-temperature coal gas in front of the pressure regulating valve bank or the turbine unit can reach 140-250 ℃) in front of the pressure regulating valve bank or the turbine unit through the arrangement of the heat collector and the temperature rising device. Compare and adopt extra high-temperature steam to heat up the coal gas that gets into desulfurization system among the prior art, the processing apparatus that this application provided retrieves the self heat of the blast furnace gas of handling the front end, has realized the intensification to the coal gas that gets into desulfurization system through the heat transfer, has reduced the cost and the energy consumption of the high-temperature steam of extra input. Further, the treatment device provided by the application can be realized by corresponding modification of the existing blast furnace gas treatment device.
All the technical features of the above embodiments can be arbitrarily combined (as long as there is no contradiction between the combinations of the technical features), and for brevity of description, all the possible combinations of the technical features in the above embodiments are not described; these examples, which are not explicitly described, should be considered to be within the scope of the present description.
The present application has been described in considerable detail with reference to certain embodiments and examples thereof. It should be understood that several conventional adaptations or further innovations of these specific embodiments may also be made based on the technical idea of the present application; however, such conventional modifications and further innovations may also fall within the scope of the claims of the present application as long as they do not depart from the technical idea of the present application.
Claims (8)
1. A processing device for dechlorination and hydrolysis desulphurization of blast furnace gas is characterized by comprising a dechlorination tower, a hydrolysis adsorption tower, a heat collector, a temperature rising device and a circulating pool;
the dechlorination tower comprises a dechlorination inlet, a dechlorination outlet, a dechlorination circulating inlet and a liquid outlet;
the hydrolysis adsorption tower comprises a hydrolysis adsorption inlet and a hydrolysis adsorption outlet, and is used for performing hydrolysis adsorption on sulfur in blast furnace gas entering the hydrolysis adsorption tower;
the heat collector is provided with a heat collecting cavity, a coal gas inlet and a coal gas outlet are arranged on the heat collecting cavity, a first heat exchange pipeline is arranged in the heat collecting cavity, and two ends of the first heat exchange pipeline respectively extend out of the heat collecting cavity to form a heat sending port and a recovery port; the temperature rising device is provided with a heat exchange cavity, a coal gas input port and a temperature rising coal gas output port are arranged on the heat exchange cavity, a second heat exchange pipeline is arranged in the heat exchange cavity, and two ends of the second heat exchange pipeline respectively extend out of the heat exchange cavity to form a heat exchange inlet and a heat exchange outlet; the heat supply port is connected with the heat exchange inlet through a heat source circulating pump, and the recovery port is connected with the heat exchange outlet;
the gas-liquid separation device is characterized in that a pressure regulating valve group and/or a turbine set are arranged between the gas outlet and the dechlorination inlet, the dechlorination outlet is connected with the gas inlet, the heating gas outlet is connected with the hydrolysis adsorption inlet, the dechlorination circulation inlet is connected with the circulation tank through a dechlorination circulation pump, and dechlorination circulation liquid is filled in the circulation tank.
2. The processing device for dechlorination and hydrolysis desulfurization of blast furnace gas according to claim 1, wherein a pressure regulating valve bank and a turbine set are connected between the gas outlet of the heat collector and the dechlorination inlet of the dechlorination tower; the pressure regulating valve group is provided with an input end and an output end, the turbine unit is provided with an inlet end and an outlet end, the input end and the inlet end are respectively connected with a coal gas outlet of the heat collector, and the output end and the outlet end are respectively connected with a dechlorinating inlet of the dechlorinating tower.
3. The apparatus of claim 1, wherein the hydrolysis adsorption outlet and the dechlorination inlet are connected via a bypass pipeline, and a gas bypass device is disposed on the bypass pipeline and comprises a valve.
4. The processing device for dechlorination and hydrolytic desulfurization of blast furnace gas according to claim 1, wherein the dechlorination tower is provided with a dechlorination chamber, and the dechlorination chamber is internally provided with a gas inlet conduit, a liquid atomizer and a demister in sequence from bottom to top; the coal gas inlet conduit is communicated with a dechlorination inlet, and the dechlorination outlet is arranged at the top of the dechlorination cavity; the liquid atomizer is connected with the dechlorination circulating inlet, dechlorination circulating liquid in the circulating tank enters the liquid atomizer through the dechlorination circulating inlet, and the liquid atomizer is used for atomizing the dechlorination circulating liquid entering the liquid atomizer;
the bottom of the dechlorination cavity is of a cone structure, the liquid outlet is formed in the top of the cone, and the liquid outlet is connected with the circulation tank through a liquid external discharger.
5. The processing plant for dechlorination and hydrolytic desulfurization of blast furnace gas according to claim 1, characterized in that the circulation tank has a liquid inlet, a liquid outlet, a circulation outlet and a circulation inlet; the liquid inlet is connected with an external liquid storage device through a delivery pump; the liquid discharge port is close to the bottom of the circulating pool, a liquid discharge pipeline is installed at the liquid discharge port, and a wastewater discharge pump is installed on the liquid discharge pipeline; the circulating outlet is close to the bottom of the circulating pool and is connected with the dechlorination circulating inlet through the dechlorination circulating pump; the circulation inlet is connected with the liquid discharge port.
6. The processing apparatus for dechlorination and hydrolysis desulfurization of blast furnace gas according to claim 1, wherein the hydrolysis adsorption tower has a water desorption chamber, the top and the bottom of the water desorption chamber are both in a cone-shaped structure, the hydrolysis adsorption inlet is arranged at the bottom of the water desorption chamber, and the hydrolysis adsorption outlet is arranged at the top of the water desorption chamber;
two coal gas uniform distribution plates are oppositely arranged in the hydrolysis adsorption cavity, and the plate surfaces of the coal gas uniform distribution plates are vertical to the central axis of the hydrolysis adsorption cavity; a hydrolytic agent is arranged between the two coal gas uniform distribution plates, and an adsorbent is arranged above the coal gas uniform distribution plate close to the top of the hydrolytic adsorption tower;
a plurality of through holes are uniformly arranged on the coal gas uniform distribution plate.
7. The processing apparatus for dechlorination and hydrolysis desulfurization of blast furnace gas according to claim 1, wherein the first heat exchange pipeline is provided with a medium inlet, the medium inlet is connected with an external medium storage device pipeline, a valve is arranged on a pipeline for connecting the medium inlet and the external medium storage device, the external medium storage device is used for conveying a medium into the first heat exchange pipeline, and the medium is a fluid;
the first heat exchange pipeline is communicated with the second heat exchange pipeline, and the heat collector carries out heat exchange and temperature rise on media in the first heat exchange pipeline through blast furnace gas entering the heat collector; and the temperature rising device carries out heat exchange and temperature rising on blast furnace gas entering the temperature rising device through the medium in the second heat exchange pipeline.
8. The process plant for the dechlorination and hydrolytic desulfurization of blast furnace gas according to claim 7, characterized in that the medium is water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223469272.5U CN218665930U (en) | 2022-12-23 | 2022-12-23 | Treatment device for dechlorination and hydrolysis desulfurization of blast furnace gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223469272.5U CN218665930U (en) | 2022-12-23 | 2022-12-23 | Treatment device for dechlorination and hydrolysis desulfurization of blast furnace gas |
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| CN218665930U true CN218665930U (en) | 2023-03-21 |
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| CN202223469272.5U Active CN218665930U (en) | 2022-12-23 | 2022-12-23 | Treatment device for dechlorination and hydrolysis desulfurization of blast furnace gas |
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| Country | Link |
|---|---|
| CN (1) | CN218665930U (en) |
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2022
- 2022-12-23 CN CN202223469272.5U patent/CN218665930U/en active Active
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