CN220485633U - Blast furnace gas desulfurization device - Google Patents
Blast furnace gas desulfurization device Download PDFInfo
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- CN220485633U CN220485633U CN202321482462.2U CN202321482462U CN220485633U CN 220485633 U CN220485633 U CN 220485633U CN 202321482462 U CN202321482462 U CN 202321482462U CN 220485633 U CN220485633 U CN 220485633U
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 55
- 230000023556 desulfurization Effects 0.000 title claims abstract description 55
- 238000006243 chemical reaction Methods 0.000 claims abstract description 106
- 239000000945 filler Substances 0.000 claims abstract description 41
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 34
- 230000007062 hydrolysis Effects 0.000 claims abstract description 32
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 239000003463 adsorbent Substances 0.000 claims abstract description 17
- 238000005192 partition Methods 0.000 claims description 22
- 238000012856 packing Methods 0.000 claims description 12
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 238000007689 inspection Methods 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 2
- 230000004308 accommodation Effects 0.000 claims 4
- 230000003301 hydrolyzing effect Effects 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 13
- 239000007789 gas Substances 0.000 description 116
- 239000003054 catalyst Substances 0.000 description 15
- 239000000428 dust Substances 0.000 description 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 229910052717 sulfur Inorganic materials 0.000 description 8
- 239000011593 sulfur Substances 0.000 description 8
- 239000003034 coal gas Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 239000012535 impurity Substances 0.000 description 6
- 125000001741 organic sulfur group Chemical group 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 239000012495 reaction gas Substances 0.000 description 5
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 4
- JJWKPURADFRFRB-UHFFFAOYSA-N carbonyl sulfide Chemical compound O=C=S JJWKPURADFRFRB-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007327 hydrogenolysis reaction Methods 0.000 description 1
- -1 hydrolytic reaction Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000013080 microcrystalline material Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The utility model discloses a blast furnace gas desulfurization device. The device comprises a tower body, wherein two sets of reaction components are sequentially arranged in the tower body along the axial direction, and a cooling device is arranged between the two sets of reaction components; the reaction assembly is internally provided with a reaction cavity or is divided into a plurality of reaction cavities which are sequentially arranged along the same radial direction and are not communicated with each other; the reaction cavity is divided into two gas channels and a filler accommodating cavity, gas enters the corresponding filler accommodating cavity through corresponding side vent holes after entering the corresponding gas channels, enters the corresponding gas channels through the other side vent holes after reacting with the hydrolytic agent or the adsorbent in the filler accommodating cavity, enters the shell body through the corresponding gas channels, and is discharged through the gas outlet after being cooled and being adsorbed in another reaction component. The hydrolysis area and the desulfurization area are arranged in the blast furnace gas hydrolysis and desulfurization tower, so that all the technological processes in the gas dry desulfurization process are realized in one tower, the number of process equipment is reduced, the cost is reduced, and the occupied area is saved.
Description
Technical Field
The utility model relates to a gas desulfurization device, in particular to a blast furnace gas desulfurization device.
Background
The total sulfur content of the blast furnace gas is between 100 and 200mg/Nm3, wherein the organic sulfur is mainly carbonyl sulfide (COS) and accounts for about 80 percent, and the prior art generally converts the organic sulfur into H2S through hydrolysis or hydrogenolysis and then removes the H2S; the inorganic sulfur is mainly hydrogen sulfide (H2S) and accounts for about 20 percent, and the desulfurizing agent can be used for directly removing the hydrogen sulfide.
The existing blast furnace gas fine desulfurization technology mainly comprises a dry desulfurization process, wherein the blast furnace gas is firstly subjected to dust removal and water removal, then subjected to hydrolysis conversion of organic sulfur, and finally subjected to inorganic sulfur removal. Because the fine desulfurization device is generally arranged after TRT or BPRT, the fluctuation of the temperature range of the gas is larger, and the hydrolysis temperature of organic sulfur is generally different from the removal temperature of inorganic sulfur, the common dry-method fine desulfurization device needs a plurality of modules such as dust removal, temperature control, hydrolysis, desulfurization and the like, which results in large investment cost, large occupied area and large system resistance in the earlier stage.
Disclosure of Invention
Aiming at the defects or shortcomings of the prior art, the utility model provides a blast furnace gas desulfurization device.
The blast furnace gas desulfurization device comprises a tower body, wherein a gas inlet is formed in the bottom of the tower body along the axial direction, a gas outlet is formed in the top of the tower body, two sets of reaction components are sequentially arranged in the tower body along the axial direction, and a cooling device is arranged between the two sets of reaction components;
each set of reaction assembly is internally provided with a reaction cavity or is divided into a plurality of reaction cavities which are sequentially arranged along the same radial direction and are not communicated with each other;
each reaction cavity is sequentially divided into three cavities along the same radial direction, namely a first gas channel, a filler accommodating cavity and a second gas channel, wherein a plurality of vent holes are formed in a first partition plate between the first gas channel and the filler accommodating cavity and in a second partition plate between the second gas channel and the filler accommodating cavity;
the axial bottom of the first gas channel is provided with a first vent, and the axial top of the second gas channel is provided with a second vent;
the hydrolysis agent is filled in each filler accommodating cavity of the reaction assembly close to the gas inlet; the inside of each filler accommodating cavity of the reaction assembly close to the gas outlet is filled with an adsorbent;
the gas entering from the gas inlet enters the corresponding first gas channel through each first vent hole and then enters the corresponding filler accommodating cavity through the corresponding side vent hole, after the filler accommodating cavity reacts with the hydrolytic agent, the gas enters the corresponding second gas channel through the vent hole at the other side, then is discharged from the reaction cavity through the second vent hole into the tower body, and is subsequently absorbed through the cooling device and the other reaction component in sequence and then is discharged from the gas outlet.
Alternatively, the two sets of reaction modules may be radially identical or interdigitated when separated.
The alternative scheme is that a temperature control device is arranged between the gas inlet and the lower reaction assembly and is used for heating or cooling the entering gas to the temperature at which hydrolysis occurs; the gas entering from the gas inlet is regulated by the temperature control device, the regulated gas enters the corresponding first gas channel through each first vent hole, enters the corresponding filler accommodating cavity through the corresponding side vent hole, reacts with the hydrolytic agent in the filler accommodating cavity, enters the corresponding second gas channel through the vent hole at the other side, is discharged from the reaction cavity through the second vent hole into the tower body, is adsorbed by the other reaction component, and is discharged from the gas outlet.
Alternatively, the radial dimension of the second gas passage is greater than the radial dimension of the first gas passage.
The optional scheme is that a charging port is formed in the side wall of the tower body, the charging port is communicated with the filler accommodating cavity, and the charging port is positioned at the axial top of the corresponding filler accommodating cavity;
the tower body side wall is provided with a first discharge opening, the axial bottom of the filler accommodating cavity is provided with a second discharge opening, and the first discharge opening is communicated with the second discharge opening.
Alternatively, the bottom of the packing containing cavity is of an inverted cone structure or a concave structure.
Optionally, a spiral unloading device, a scraper unloading device or a pneumatic conveying unloading device is arranged at the axial bottom of the filler accommodating cavity.
Optionally, a detachable top cover is arranged at the top of the particle material accommodating cavity.
Alternatively, the side wall of the tower body is provided with a plurality of inspection holes, and each inspection hole is respectively positioned on the side wall of each filler accommodating cavity or/and the upper part of the reaction component.
Optionally, the first vent is provided with a first sealing door; the second ventilation opening is provided with a second sealing door.
Alternatively, a baffle is installed at the axial bottom of the reaction cavity, and the baffle is located beside the first air vent.
Alternatively, the vent hole distribution area on the first partition board is spaced from the side edge of the first partition board; and the vent hole distribution area on the second partition board is spaced from the side edge of the second partition board.
Optionally, the first gas channel, the second gas channel and the filler accommodating cavity are provided with flushing nozzles.
The tower body is formed by assembling a lower sealing head, a cylinder body and an upper sealing head, and the two sets of reaction components and the cooling device are positioned in the cylinder body.
The hydrolysis area and the desulfurization area are arranged in the blast furnace gas hydrolysis and desulfurization tower, so that all the technological processes of temperature control, dust removal, hydrolysis and desulfurization in the gas dry desulfurization process are realized in one tower, the number of process equipment is reduced, the cost is reduced, and the occupied area is saved;
through reasonable intra-tower partition in each reactor, a box type reaction zone is adopted, the internal part structure is simple, the assembly requirement is low, the processing and the manufacturing are convenient, the contact area of the catalyst and the coal gas is enlarged, the reaction efficiency of the coal gas and the catalyst is improved, and the resistance in the tower is small.
Further, by integrating devices such as temperature control, dust removal and demisting, the total resistance of the fine desulfurization system is reduced, the system integration level is improved, the overhaul difficulty is reduced, and the standardization and modularization of the fine desulfurization system are facilitated.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus according to an embodiment of the present utility model.
FIG. 2 is a side view of a hydrolysis chamber and desulfurization chamber in accordance with an embodiment of the present utility model.
FIG. 3 is a top view of a hydrolysis chamber and desulfurization chamber in accordance with an embodiment of the present utility model.
Detailed Description
Unless specifically stated otherwise, scientific and technical terms herein have been understood based on the knowledge of one of ordinary skill in the relevant art.
The terms of axial, radial, upper, lower, vertical, longitudinal, horizontal and other directions or orientations described herein are consistent with the corresponding directions or orientations in the drawings of the specification, and it is to be understood that the specific directions or orientations in the drawings of the specification are intended to explain the present utility model, and all alternatives, such as exchanges, rotations, etc., made by those skilled in the art on the basis of the present disclosure are within the scope of the present utility model.
Example 1:
referring to fig. 1-3, the blast furnace gas desulfurization device of the utility model comprises a tower body 12, a reaction gas inlet 2 is arranged at the bottom of the tower body along the axial direction of the tower body, a gas outlet 11 is arranged at the top of the tower body, two sets of reaction components (in a specific scheme, the two sets of reaction components can be arranged in the tower body through supporting components (702,902) such as supporting frames and the like, the supporting components are of simple schematic structures in fig. 1), the two sets of reaction components are respectively an upper reaction component 9 (close to the gas outlet) and a lower reaction component 7 (close to the gas inlet), and a cooling device 8 is arranged between the two sets of reaction components;
each set of reaction assembly body is internally provided with a reaction cavity or a plurality of reaction cavities are arranged in each set of reaction assembly body, when the reaction cavities are in a plurality of reaction cavities, the reaction cavities are sequentially distributed along the same radial direction A (vertical to the axial direction), and the reaction cavities are mutually independent and are not communicated; for a single reaction chamber (a reaction chamber when one reaction chamber is formed, or any one reaction chamber among a plurality of reaction chambers), the interior of the single reaction chamber is divided into three chambers along the same radial direction A, a first gas channel (709, 909), a filler accommodating chamber (708, 908) and a second gas channel (710, 910) are arranged in sequence, and a plurality of vent holes are formed in the partition plates (a first partition plate 704/904 and a second partition plate 705/905) between the adjacent chambers; in addition, the bottom of one side of the gas channel (the first gas channel) is provided with a vent (the first vent) for air inlet, and the top of the other side of the gas channel (the second gas channel) is provided with a vent (the second vent) for air outlet; when a plurality of reaction chambers are arranged, the radial arrangement sequence of the air inlet vents, the filler accommodating chambers and the air outlet vents in each reaction chamber is the same or different, or the distribution mode in the tower body is a mirror image (namely, one radial side in the tower body is the arrangement sequence of the air inlet vents, the filler accommodating chambers and the air outlet vents, and the other radial side is the reverse order);
when a plurality of reaction chambers are formed, the reaction components can be isolated in a mode of an integral baffle plate (711,911) to form a plurality of vertical/longitudinal box-shaped reaction chambers which are independent respectively, each reaction chamber is divided into independent chambers, a hydrolytic agent (or an adsorbent) is placed in the middle chamber to be used as a filling material accommodating chamber, and the two radial sides are provided with an air inlet channel and an air outlet channel;
the hydrolysis agent is filled in each filler accommodating cavity of the lower reaction assembly; the filler accommodating cavity of the upper reaction component is filled with an adsorbent; when the gas-liquid separator is used, gas at 60-90 ℃ enters the tower body through the bottom reaction gas inlet, moves upwards along the axial direction, enters the gas channel of the corresponding reaction cavity through the bottom vent after reaching the lower reaction component (when a plurality of reaction cavities are formed, the reaction gas is split), then enters the filler accommodating cavity along the radial direction through the vent holes on the partition plate, reacts with the hydrolysis agent in the filler accommodating cavity, then passes through the vent holes on the partition plate on the other side along the radial direction, enters the side gas channel, is discharged into the tower body through the top vent hole, moves to the cooling component along the axial direction, is cooled to 40-50 ℃, then moves into the upper reaction component, is adsorbed by the adsorbent in the filler accommodating cavity according to the principle, enters the tower body, and is discharged through the gas outlet after passing through the top. The hydrolytic agent, hydrolytic reaction, adsorbent and adsorption reaction involved in the process are substances and reactions which can realize the hydrolysis and desulfurization adsorption of the blast furnace gas, such as related substances and reactions in the prior art.
When a plurality of reaction chambers are arranged in the reaction component, the gas entering from the bottom is split and horizontally (radially) passes through the hydrolytic agent (or the adsorbent), so that the stability of a medium flow field in the equipment is ensured; compared with the conventional axial desulfurization equipment, the contact area of the hydrolytic agent (or the adsorbent) and the coal gas is enlarged, the reaction efficiency of the gas and the hydrolytic agent (or the adsorbent) is improved, the integral volume of the equipment can be reduced, and the integral volume is 1/2-2/3 of that of the conventional axial equipment when the hydrolytic agent (or the adsorbent) and the coal gas are equal; the radial width of the reaction cavity is small, the height of the reaction cavity is not influenced by factors of gas treatment capacity and catalyst characteristics, the running resistance in the equipment is small, and the running resistance of a system is reduced; compared with radial desulfurization equipment with a plurality of concentric sleeves with holes, the radial desulfurization equipment has the advantages of simple structure, convenient manufacture and easy integration.
In the specific scheme, the two sets of reaction components are identical or mutually intersected along the radial direction when being separated (the included angle between the two radial directions is 80-100 degrees). The reaction efficiency can be improved.
In order to avoid short-circuiting of the gas at the upper part of the chamber, the filling height exceeds the open area of the separators at both sides when filling the hydrolyzer (or adsorbent). For example, at least 200mm above the open area, preferably not less than 0.5 times the radial width of the corresponding cavity.
In the specific scheme, the open pore shapes of the first baffle plate and the second baffle plate can be round holes, square holes, oblong holes or other holes, and the vent hole opening ratio is 10% -80%; by adjusting the diameters of vent holes and the opening ratios of the effective opening areas below and above the partition plate (such as the upper, middle and lower areas are divided from bottom to top and the opening ratios of the three areas are gradually increased from bottom to top), the gas uniformly enters and passes through the hydrolysis agent (or adsorbent) layer in the effective reaction area of the hydrolysis agent (or adsorbent), the good mass transfer and absorption performance of the hydrolysis agent (or adsorbent) layer is ensured, and the short circuit of the gas in each reaction cavity is avoided. In some embodiments, to prevent leakage of the hydrolyzing agent (or adsorbent), the first and second separators are each provided with a mesh, such as a steel mesh, on the side of the particle-containing chamber.
It should be noted that, in the above description, the gas inlet and outlet on the tower body are not limited to be opened at the bottom and the top, but may be opened at the top and the bottom, and the positions of the gas inlet and outlet vents on the upper and lower reaction components are exchanged correspondingly. In addition, the shape of the tower body depends on practical application situations, such as a cylinder shape or a cube shape, and for the cylindrical tower body, when the reaction cavity is separated along a radial direction, partial areas are reserved on two radial sides, and in a specific scheme, the areas can be blocked by arranging sealing plates (706, 906) so as to prevent gas from escaping to a subsequent process link without treatment.
In the specific scheme, the width of the gas channel at the gas inlet and outlet sides is determined according to the gas flow rate, the flow field in the equipment and the characteristics of the hydrolytic agent (or the adsorbent), so that the working flow rate required by the gas entering the reaction cavity and the flow field stability of the front and back (or left and right) of the filler accommodating cavity are ensured. That is, in order to ensure that the gas is stable and smooth in the gas flow reaction module, it is considered that a sufficient gas flow space is given to the gas on the gas outlet side, and in a preferred embodiment, the radial dimension or width of the gas channel on the gas outlet side (the second gas channel) is larger than the radial dimension or width of the gas channel on the gas inlet side (the first gas channel). By way of example, the radial width of the inlet-side channels is at least 100mm, the radial width of the outlet-side channels is at least 250mm, and the flow rate of the gas in the channels is preferably 2-15 m/s.
For facilitating the online replacement of the packing, referring to fig. 2, charging ports (712, 912) are arranged at the positions on the tower body corresponding to the packing accommodating cavities, and each charging port is positioned at the axial top of the corresponding packing accommodating cavity; simultaneously, the bottom of each packing containing cavity is provided with a discharge opening (second discharge opening), and the corresponding part of the side wall of the tower body is also provided with a discharge opening (713,913) (first discharge opening), and the two discharge openings are communicated through a pipeline. In a further preferred embodiment, to avoid blockage of the discharge, the bottom of each packing receiving chamber is of an inverted conical or fluted configuration (703,903), and the support assembly is correspondingly provided with a recess for receiving the bottom structure. In some schemes, in order to further increase the efficiency of replacing the filler, the bottom of each filler accommodating cavity is provided with a forced discharging device 6 along the length direction vertical to the axial direction, so that the discharging is more efficient and convenient, the structure type of the discharging device 6 can select spiral type, scraping plate type, pneumatic conveying and the like, flexible materials such as rubber, plastic and the like are lined in the discharging device 6 component contacted with the filler, and the damage of the catalyst in the discharging process is avoided.
In some schemes, the equipment is convenient to install and overhaul, and a plurality of inspection holes 13 are formed in the side wall of the tower body; alternatively/and, the top of each packing containing cavity is provided with a detachable top cover (707,907). In some schemes, an overhaul hanging column 10 is also arranged on the outer wall of the tower body.
In other schemes, in order to ensure stable air flow in the tower body, a guide plate (701,901) is arranged below each reaction cavity; and each deflector is positioned beside the air inlet. In the specific scheme, the deflection angle of each deflector is determined according to the processing capacity of the reaction gas, the inner diameter of the tower body and the specification and the size of the deflector, so that the gas quantity in each reaction cavity is matched with the effective area of each cavity and the volume of the filler, and the deflection angle can be selected to be 0-30 degrees. The gas enters the reaction zone from the lower part of the device, rises to be shunted to the air inlet channel by the guide plate, then uniformly passes through the front partition plate horizontally and fully reacts with the filler in the filler accommodating cavity, then passes through the rear partition plate and enters the air outlet side channel, and the gas flows out of the reaction component from the corresponding air vent. In a further scheme, the back air side of the guide plates is provided with flat steel or angle steel reinforcement in the longitudinal direction and the transverse direction, so that the guide plates are ensured to have enough rigidity, strength and stability.
In the preferred scheme, in order to ensure that the periphery of the partition plate has enough connection strength; the open areas on the first and second baffles are spaced from their peripheral side edges by a reasonable gap. If the upper end edge is 200-600 mm provided with a non-perforated area, the lower end edge is 150-200 mm provided with a non-perforated area, and the two side edges connected with the tower body 1 are at least 100mm provided with non-perforated areas.
In a specific scheme, the cooling device can be a heat exchange device, such as a plate heat exchanger or a tube heat exchanger, and the cooling device can be specifically installed in the tower body through a cooling device supporting component 801 such as a supporting bracket. To avoid vibration damage to the cooling device by the air flow, a damper assembly 802 is provided between the cooling device and its support assembly 801. The damping component is arranged and fixed above the corresponding component supporting component, and is used as a limiting guide rail for the expansion and sliding of the component besides ensuring the stable operation of the component; a rubber gasket of reasonable thickness (e.g., at least 30 mm) is disposed between the shock absorbing assembly and the component support assembly.
In some schemes, sealing doors (not shown in the figure) are respectively arranged at the air vent of the air inlet side air channel and the air vent of the air outlet side air channel, so that reaction gas in the equipment is isolated from the closed reaction cavity, and therefore, a single reaction cavity is independent from a system, overhauling, filling changing and the like of the single reaction cavity in the running state of the equipment are realized, and the running of the system is not influenced. The sealing door structure is preferably a double louvered flapper door.
In a further scheme, the flushing nozzles are arranged in each gas channel and the filling material accommodating cavity, the flushing device in the channel is vertical to the cavity wall plate, so that the flushing liquid can be enabled to be soaked in the whole reaction cavity, and easily soluble impurities on the surface of the cavity are dissolved and discharged out of the equipment.
Example 2:
the device of this embodiment is based on the embodiment 1 scheme, and a temperature control device 3 is arranged in the tower body between the gas inlet and the reaction component below, and the temperature control device can be specifically installed in the tower body through a temperature control device supporting component 301 such as a supporting bracket. The temperature control device is used for adjusting the temperature of the gas entering the tower to the proper temperature (60-90 ℃) for the hydrolysis agent reaction, and the temperature control device 3 controls and adjusts the temperature of the gas in real time according to the temperature of the gas entering the tower and the high-efficiency absorption temperature range of the hydrolysis agent.
For the gas with the inlet gas temperature lower than the proper temperature for the hydrolysis agent reaction, the temperature control device adopts a heating device, particularly adopts a plate heat exchanger or a tubular heat exchanger, and the side wall of the corresponding tower body is provided with a heat exchange medium inlet 4. And a dust removing device is arranged below the temperature control device to reduce the impurity content in the gas.
For the gas with the inlet gas temperature higher than the proper temperature for the hydrolysis reaction, the temperature control device consists of a set of cooling device and a set of heating device, and the heating device is positioned above the cooling device and is used for cooling and heating the gas temperature higher than the reasonable reaction temperature of the hydrolysis zone. And a dust removing device is arranged below the temperature control device, or a dust removing device is arranged between the cooling device and the heating device so as to reduce the impurity content in the coal gas.
When the device provided with the temperature control device works, blast furnace gas enters the tower from the gas inlet 2, and the gas passes through the temperature control region and is regulated to the proper temperature of the hydrolysis catalyst by the temperature control device 3; the temperature control device 3 controls and adjusts the temperature of the gas in real time according to the temperature of the gas entering the tower and the hydrolysis temperature interval, and simultaneously further reduces the impurity content in the gas to the environmental protection emission standard, the gas rises and shunts to the gas inlet channel 709 of the hydrolysis zone, and then horizontally and uniformly passes through the hydrolysis catalyst layer to convert organic sulfur into inorganic sulfur; the hydrolyzed coal gas is subjected to temperature adjustment to a proper temperature for adsorbing a desulfurization catalyst through a heat exchanger 8, the coal gas rises and shunts to an air inlet channel 909 of a desulfurization zone, and then horizontally and uniformly passes through a desulfurization catalyst layer 908, and inorganic sulfur is removed by the desulfurization catalyst; the purified gas is conveyed to the outside of the tower through a gas outlet 11.
To process 120000Nm 3 (h) blast furnace gas at a temperature of 40-100 ℃ as an example; the inner diameter of the tower body of the embodiment is 6m, and the total height is 40m; the thickness of the hydrolytic agent layer is 800mm, and the filling height is 12m; the thickness of the desulfurization catalyst layer is 1000mm, and the filling height is 12m; the gas is firstly passed through a temperature control device, the temperature is regulated to the proper temperature for hydrolysis reaction, and is shunted to the air inlet channel 709 of the hydrolysis zone through the guide plate 701 of the hydrolysis zone, and then horizontally and uniformly passes through the waterThe catalyst decomposing layer 708 converts organic sulfur into inorganic sulfur, the hydrolyzed gas is passed through a heat exchanger 8 to regulate the gas temperature to proper temperature of desulfurization catalyst, and the desulfurization catalyst can be Fe 2 O 3 ZnO, activated carbon, molecular sieve, microcrystalline material and the like, gas is shunted to a desulfurization zone air inlet channel 909 through a desulfurization zone deflector 901, then horizontally and uniformly passes through a desulfurization catalyst layer 908, inorganic sulfur is removed by the desulfurization catalyst, and purified gas is discharged out of the device through a gas outlet 11.
In order to avoid vibration damage to the temperature control device caused by air flow, a damping component 302 is arranged between the temperature control device and the supporting component 301 thereof. The damping component is arranged and fixed above the corresponding component supporting component, and is used as a limiting guide rail for the expansion and sliding of the component besides ensuring the stable operation of the component; a rubber gasket of reasonable thickness (e.g., at least 30 mm) is disposed between the shock absorbing assembly and the component support assembly.
In a further scheme, a flushing spray assembly 5 is arranged between the temperature control device and the reaction assembly below and used for flushing impurities on the heat exchange device, and accordingly, a liquid outlet 102 is arranged at the bottom of the tower body, dust, chloride, soluble impurities and the like on the surface of the temperature control device 3 are flushed by the flushing spray assembly 5, flushing sewage is discharged to the outside of the tower through the liquid outlet 102, dust and chlorine in blast furnace gas are effectively removed, and corrosion of subsequent pipelines and equipment of the blast furnace gas is reduced.
Example 3:
in some other solutions, based on the above embodiment, in order to facilitate the installation of each component in the tower, the tower body is formed by assembling an upper seal head 1201, a cylinder 1202 and a lower seal head 1203, a gas outlet is disposed on the upper seal head, a gas inlet is disposed at the bottom of the cylinder, and two sets of cooling devices (and temperature control devices) for the reaction components are disposed in the cylinder. In a further solution, the tower body is fixed to the ground or the working surface by means of anchor bolts 101 and skirt 1. When a liquid outlet is needed to be arranged at the bottom of the tower top, the liquid outlet is arranged on the lower seal head 1203, and the liquid outlet 102 is provided with a pipeline to be led out of the skirt.
In a further scheme, the cylinder body can be formed by assembling the cylinder bodies (the lower reaction component cylinder body, the upper reaction component cylinder body, the temperature control device cylinder body and the heating device cylinder body) of the corresponding functional units through flanges, and the functional units (the lower reaction component, the upper reaction component, the temperature control device and the heating device) in the embodiment are installed in the corresponding cylinder bodies. According to the gas working condition and specific process characteristics, the lower reaction component cylinder (hydrolysis zone) and the lower reaction component cylinder (desulfurization zone) can be provided with different inner diameters and axial dimensions (selected by gas components and desulfurization effects), and the hydrolysis zone and the desulfurization zone are connected through the reinforced reducing section, so that the equipment cost is further reduced.
Claims (13)
1. The blast furnace gas desulfurization device comprises a tower body, wherein a gas inlet is formed in the bottom of the tower body along the axial direction, and a gas outlet is formed in the top of the tower body;
each set of reaction assembly is internally provided with a reaction cavity or is divided into a plurality of reaction cavities which are sequentially arranged along the same radial direction and are not communicated with each other;
each reaction cavity is sequentially divided into three cavities along the same radial direction, namely a first gas channel, a filler accommodating cavity and a second gas channel, wherein a plurality of vent holes are formed in a first partition plate between the first gas channel and the filler accommodating cavity and in a second partition plate between the second gas channel and the filler accommodating cavity;
the axial bottom of the first gas channel is provided with a first vent, and the axial top of the second gas channel is provided with a second vent;
the hydrolysis agent is filled in each filler accommodating cavity of the reaction assembly close to the gas inlet; each packing accommodation chamber of the reaction assembly near the gas outlet is filled with an adsorbent.
2. The blast furnace gas desulfurization apparatus according to claim 1, wherein a temperature control device is provided between the gas inlet and the lower reaction module.
3. The blast furnace gas desulfurization apparatus according to claim 1, wherein the radial dimension of the second gas passage is larger than the radial dimension of the first gas passage.
4. The blast furnace gas desulfurization apparatus according to claim 1, wherein a charging port is provided on a side wall of the tower body, the charging port is communicated with the filler accommodating cavity, and the charging port is positioned at an axial top of the corresponding filler accommodating cavity;
the tower body side wall is provided with a first discharge opening, the axial bottom of the filler accommodating cavity is provided with a second discharge opening, and the first discharge opening is communicated with the second discharge opening.
5. The blast furnace gas desulfurization apparatus according to claim 1, wherein the bottom of the packing housing chamber is of an inverted cone-shaped structure or a concave structure.
6. The blast furnace gas desulfurization apparatus according to claim 1, wherein the filler-containing chamber is provided with a screw discharge device, a scraper discharge device or a pneumatic conveying discharge device at an axial bottom thereof.
7. The blast furnace gas desulfurization apparatus according to claim 1, wherein a detachable top cover is provided at a top of the packing accommodation chamber.
8. The blast furnace gas desulfurization apparatus according to claim 1, wherein the side wall of the tower body is provided with a plurality of inspection holes, each inspection hole being located above the side wall of each packing accommodation chamber or/and the reaction module, respectively.
9. The blast furnace gas desulfurization apparatus according to claim 1, wherein the first vent is provided with a first sealing door; the second ventilation opening is provided with a second sealing door.
10. The blast furnace gas desulfurization apparatus according to claim 1, wherein a baffle is installed at an axial bottom of the reaction chamber, and the baffle is located beside the first vent.
11. The blast furnace gas desulfurization apparatus according to claim 1, wherein the vent distribution area on the first partition is spaced from the first partition side edge; and the vent hole distribution area on the second partition board is spaced from the side edge of the second partition board.
12. The blast furnace gas desulfurization apparatus according to claim 1, wherein the first gas passage, the second gas passage and the packing accommodation chamber are each provided with a flushing nozzle.
13. The blast furnace gas desulfurization apparatus according to claim 1, wherein the tower body is assembled by a lower end enclosure, a cylinder body and an upper end enclosure, and the two sets of reaction components and the cooling device are positioned in the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321482462.2U CN220485633U (en) | 2023-06-12 | 2023-06-12 | Blast furnace gas desulfurization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321482462.2U CN220485633U (en) | 2023-06-12 | 2023-06-12 | Blast furnace gas desulfurization device |
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| Publication Number | Publication Date |
|---|---|
| CN220485633U true CN220485633U (en) | 2024-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321482462.2U Active CN220485633U (en) | 2023-06-12 | 2023-06-12 | Blast furnace gas desulfurization device |
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| Country | Link |
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| CN (1) | CN220485633U (en) |
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2023
- 2023-06-12 CN CN202321482462.2U patent/CN220485633U/en active Active
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