Bfog gas dewatering and desulfurization reactor

Abstract

The utility model provides a kind of blast furnace gas dehydration desulfurization reactor, it is related to gas treatment equipment technical field, including tower shell, exhaust pipe, spiral air deflector and turbulence structure, tower shell includes by upper to lower setting desulfurization section and dehydration section, desulfurization section is equipped with gas outlet, dehydration section is equipped with gas inlet;The outlet of exhaust pipe is communicated desulfurization section, the inlet of exhaust pipe is inserted and is set in dehydration section, annular gap is formed between exhaust pipe and dehydration section;Spiral air deflector is set in annular gap, spiral air deflector is formed spiral dehydration channel by gas inlet downward extension setting;Turbulence structure is set in spiral dehydration channel.The utility model is by spiral air deflector and turbulence structure cooperation constitutes the dehydration mechanism of "cyclone centrifugal+inertial collision", significantly improves the removal ability to water body, to be able to efficiently, stably and low energy consumption realizes front dehydration to comprehensively improve the reliability and operating efficiency of blast furnace gas fine desulfurization.

Description

Technical Field

[0001] This utility model relates to the technical field of coal gas treatment equipment, and in particular to a blast furnace gas dehydration and desulfurization reactor. Background Technology

[0002] As a pillar industry of the economy, the steel industry is facing increasingly severe environmental challenges, among which the treatment of sulfide emissions from blast furnace gas is a key link in achieving green transformation. To meet ultra-low emission standards, blast furnace gas fine desulfurization technology has become a core direction for the industry's clean development, and its stable and efficient operation is directly related to the environmental compliance and sustainable development of enterprises. In the fine desulfurization process, front-end dehydration is a key pretreatment unit to ensure the effectiveness of subsequent deep desulfurization. Blast furnace gas typically carries a large amount of saturated water vapor and free liquid water droplets into the desulfurization system. This moisture seriously interferes with the desulfurization process: on the one hand, water vapor and liquid water can damage the active microporous structure of the desulfurizing agent, cover the reactive sites, leading to a decrease in the sulfur capacity of the adsorbent and a significant reduction in desulfurization efficiency; on the other hand, in a water-containing gas environment, it is easy to induce the crystallization and precipitation of sulfates or sulfites, causing blockage of the packing layer and accumulation of reaction channels, thereby shortening the operating cycle of the unit and exacerbating the risk of equipment corrosion. However, existing dehydration technologies, such as gravity settling, traditional wire mesh demisters, or hydrocyclones, generally suffer from insufficient dehydration precision, incomplete gas-liquid separation, high equipment pressure loss, and susceptibility to clogging when dealing with the complex operating conditions of blast furnace gas with large flow rates, strong fluctuations, and high dust and water entrainment. These issues make it difficult to continuously and stably provide dry gas that meets the requirements of fine desulfurization. Therefore, how to achieve efficient, stable, and low-energy-consumption front-end dehydration to comprehensively improve the reliability and operational efficiency of blast furnace gas fine desulfurization has become an urgent technical problem to be solved. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a blast furnace gas dehydration and desulfurization reactor for efficient, stable and low-energy-consumption front-end dehydration to comprehensively improve the reliability and operational efficiency of blast furnace gas fine desulfurization.

[0004] The above-mentioned objective of this utility model can be achieved by the following technical solution: This utility model provides a blast furnace gas dehydration and desulfurization reactor, comprising: The tower shell includes a desulfurization section and a dehydration section arranged from top to bottom. The desulfurization section is provided with a gas outlet, and the dehydration section is provided with a gas inlet. An exhaust pipe, the outlet of which is connected to the desulfurization section, and the inlet of which is inserted into the dehydration section, with an annular gap formed between the exhaust pipe and the dehydration section; A spiral air guide plate is disposed in the annular gap, and the spiral air guide plate extends downward from the gas inlet to form a spiral dehydration channel; A turbulence-disrupting structure is disposed within the spiral dehydration channel.

[0005] In a preferred embodiment of the present invention, the exhaust pipe includes a conical section and a cylindrical section. The large end of the conical section is connected to the tower shell and divides the tower shell into the desulfurization section and the dehydration section. The lower end of the conical section is connected to the cylindrical section.

[0006] In a preferred embodiment of the present invention, the blast furnace gas dehydration and desulfurization reactor further includes an airflow distributor disposed within the conical section.

[0007] In a preferred embodiment of the present invention, the turbulence structure includes multiple risers, which extend along the axial direction of the tower shell within the dewatering section and penetrate the spiral air guide plate. The multiple risers are arranged in an alternating array to form a riser array.

[0008] In a preferred embodiment of the present invention, multiple riser arrays are provided, and the multiple riser arrays are arranged in a ring around the exhaust pipe at intervals.

[0009] In a preferred embodiment of the present invention, the blast furnace gas dehydration and desulfurization reactor further includes a flushing water pipe, the top end of the riser is closed, the bottom end of the riser is connected to the flushing water pipe, and at least one spray hole is provided on the side wall of the riser.

[0010] In a preferred embodiment of this utility model, the spray holes are arranged opposite to the airflow conveying direction of the spiral dehydration channel.

[0011] In a preferred embodiment of the present invention, the turbulence structure further includes a water-blocking cover correspondingly disposed on each of the spray holes.

[0012] In a preferred embodiment of the present invention, the tower shell further includes a drain outlet disposed at the bottom of the dehydration section.

[0013] In a preferred embodiment of this utility model, the gas inlet is arranged tangentially along the sidewall of the dehydration section.

[0014] The technical solution of this utility model has the following significant beneficial effects: The blast furnace gas dehydration and desulfurization reactor of this invention integrates a spiral guide plate into the gas inlet of the tower shell, thus forming an integrated blast furnace gas dehydration and desulfurization reactor in conjunction with the desulfurization section. This eliminates the need for a separate dehydration tower and its connecting pipelines as in existing technologies, significantly reducing equipment footprint and construction investment, and improving the reactor's compact layout. Specifically, the coaxial integration of the dehydration and desulfurization sections enables a modular layout, facilitating installation and expansion, and is particularly suitable for steel enterprise technical upgrade projects with limited space. Furthermore, the dehydration section can be maintained synchronously with the desulfurization section in the reactor, eliminating the need for separate shutdowns and ensuring continuous operation of the reactor. The spiral guide plate creates a highly efficient centrifugal separation field, generating a strong swirling flow in the annular gap of the water-containing gas, achieving rapid removal of large droplets and particulate matter. The turbulence structure further enhances the efficiency of airflow disturbance and droplet collision and capture. The combination of spiral guide vanes and turbulence structure forms a "cyclone centrifugal force + inertial collision" composite dehydration mechanism, which significantly improves the removal capacity of tiny droplets and entrained dust. This provides efficient and reliable front-end dehydration for blast furnace gas desulfurization, ensuring deep dehydration while taking into account low energy consumption, long-term stable operation and convenient maintenance. Thus, it can achieve efficient, stable and low-energy front-end dehydration to comprehensively improve the reliability and operational efficiency of blast furnace gas desulfurization. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0017] Figure 1 This is a schematic diagram of the structure of one embodiment of the blast furnace gas dehydration and desulfurization reactor of this utility model; Figure 2 This is a top view schematic diagram of one embodiment of the gas inlet described in this utility model; Figure 3 This is a side view of one embodiment of the riser described in this utility model.

[0018] The reference numerals in the above figures are as follows: 100. Tower shell; 110. Desulfurization section; 111. Gas outlet; 120. Dehydration section; 121. Gas inlet; 122. Drainage outlet; 200. Exhaust pipe; 210. Conical section; 220. Cylindrical section; 300. Spiral air guide plate; 400. Turbation structure; 410. Riser; 411. Spray hole; 412. Water baffle; 500. Airflow distributor; 600. Rinse the water pipe. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please refer to the following: Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of this utility model provides a blast furnace gas dehydration and desulfurization reactor. The blast furnace gas dehydration and desulfurization reactor includes a tower shell 100, an exhaust pipe 200, a spiral guide plate 300, and a turbulence structure 400. The tower shell 100 includes a desulfurization section 110 and a dehydration section 120 arranged from top to bottom. The desulfurization section 110 is provided with a gas outlet 111, and the dehydration section 120 is provided with a gas inlet 121. The outlet of the exhaust pipe 200 is connected to the desulfurization section 110, and the inlet of the exhaust pipe 200 is inserted into the dehydration section 120. An annular gap is formed between the exhaust pipe 200 and the dehydration section 120. The spiral guide plate 300 is disposed in the annular gap and extends downward from the gas inlet 121 to form a spiral dehydration channel. The turbulence structure 400 is disposed in the spiral dehydration channel.

[0021] Overall, this blast furnace gas dehydration and desulfurization reactor integrates the spiral guide plate 300 into the gas inlet 121 of the tower shell 100, thus forming an integrated blast furnace gas dehydration and desulfurization reactor in conjunction with the desulfurization section 110. This eliminates the need for a separate dehydration tower and its connecting pipelines found in existing technologies, significantly reducing equipment footprint and construction investment, and improving the reactor's compact layout. The coaxial integration of the dehydration section 120 and the desulfurization section 110 facilitates installation and expansion, making it particularly suitable for steel enterprise upgrade projects with limited space. Furthermore, the dehydration section can be maintained simultaneously with the desulfurization section 110 within the reactor, eliminating the need for separate shutdowns and ensuring continuous reactor operation.

[0022] Furthermore, the spiral guide plate 300 forms a highly efficient centrifugal separation field, causing strong swirling flow in the annular gap of the water-containing gas, achieving rapid removal of large droplets and particulate matter. The turbulence structure 400 further enhances the efficiency of airflow disturbance and droplet collision and capture. The combination of the spiral guide plate 300 and the turbulence structure 400 constitutes a "cyclone centrifugal force + inertial collision" composite dehydration mechanism, significantly improving the removal capacity of small droplets and entrained dust. This provides efficient and reliable front-end dehydration for blast furnace gas desulfurization, ensuring deep dehydration while also considering low energy consumption, long-term stable operation, and ease of maintenance. This enables efficient, stable, and low-energy front-end dehydration, comprehensively improving the reliability and operational efficiency of blast furnace gas desulfurization.

[0023] In the embodiments of this utility model, such as Figure 1 In the embodiment shown, the exhaust pipe 200 includes a conical section 210 and a cylindrical section 220. The large end of the conical section 210 is connected to the tower shell 100 and divides the tower shell 100 into a desulfurization section 110 and a dehydration section 120. The lower end of the conical section 210 is connected to the cylindrical section 220.

[0024] The cylindrical section 220 provides a stable and uniform airflow channel, ensuring conveying efficiency. Furthermore, the conical section 210 enables functional zoning of the dehydration and desulfurization spaces. The expanded diameter design of the conical section 210 helps reduce the inlet airflow velocity, optimizes airflow distribution, reduces turbulence and eddy current losses, and improves flow stability.

[0025] Furthermore, such as Figure 1 The embodiment shown further includes an airflow distributor 500 disposed within the conical section 210 of the blast furnace gas dehydration and desulfurization reactor. The airflow distributor 500 effectively eliminates local airflow deviation, vortices, and uneven velocity, ensuring uniform gas distribution upon entering the desulfurization section 110.

[0026] Designers can adjust the specific type of airflow distributor 500 according to usage requirements, and no specific limitations are imposed here. For example, in one feasible embodiment, the airflow distributor 500 is a perforated plate structure. In another feasible embodiment, the airflow distributor 500 is a blade structure.

[0027] In the embodiments of this utility model, such as Figure 1 and Figure 2 In the embodiment shown, the turbulence structure 400 includes multiple risers 410. The risers 410 extend along the axial direction of the tower shell 100 within the dewatering section 120 and pass through the spiral air guide plate 300. The multiple risers 410 are arranged in an alternating array to form a riser array.

[0028] By arranging multiple risers 410 in an alternating array, a riser array is formed. When the gas, after being preliminarily dehydrated by centrifugation, passes through the riser array, the gas flow path is repeatedly divided and recombined. Residual fine droplets and dust-laden water mist continuously collide with the surface of the riser 410 during the flow process and coalesce into large droplets, effectively enhancing the gas flow disturbance and inertial collision effect. Finally, under the action of gravity and gas flow shear, the gas smoothly settles and is discharged, increasing the gas-liquid contact area and residence time, and significantly improving the collection efficiency of micron-sized droplets.

[0029] Preferred, such as Figure 2 In the illustrated embodiment, multiple riser arrays are arranged in a ring around the exhaust pipe 200 at intervals. For example, two riser arrays are arranged approximately symmetrically about the exhaust pipe 200. By arranging multiple riser arrays, a synergistic effect is achieved, further enhancing airflow disturbance and inertial collision effects, and improving liquid capture efficiency.

[0030] In the embodiments of this utility model, such as Figure 1 The embodiment shown further includes a flushing water pipe 600 in the blast furnace gas dehydration and desulfurization reactor. The top end of the riser 410 is closed, and the bottom end of the riser 410 is connected to the flushing water pipe 600. At least one spray hole 411 is provided on the side wall of the riser 410.

[0031] An online flushing system is formed by the flushing water pipe 600 and the riser 410, allowing the riser 410 to be flushed from bottom to top. When dust or dirt accumulates on the inner wall of the riser 410 or the spiral guide plate 300 during reactor operation, clean water can be introduced through the flushing water pipe 600. Under pressure, the water flows through the inner cavity of the riser 410 and is sprayed directionally from the spray holes 411, achieving reverse flushing of the surrounding area. This effectively removes blockages and deposited impurities, ensuring the long-term efficient operation of the reactor.

[0032] Designers can adjust the specific number and arrangement of the spray nozzles 411 according to usage needs; no specific restrictions are imposed here. Preferably, such as Figure 2 and Figure 3 In the embodiment shown, the spray hole 411 is positioned opposite to the airflow delivery direction of the spiral dehydration channel.

[0033] By positioning the spray nozzles 411 away from the airflow direction of the spiral dehydration channel, it is ensured that the spray nozzles 411 are not blocked by the frontal airflow, preventing the spray water from being secondary-entrained by the high-speed gas. This ensures that the spray water can act directionally on the pipe wall or the spiral guide plate 300, thereby improving the flushing and cleaning effect on attached contaminants. The spray water can be industrial water or purified gas condensate; no specific restrictions are imposed here.

[0034] More preferably, such as Figure 2 and Figure 3In the illustrated embodiment, the turbulence structure 400 also includes a water-blocking cover 412 correspondingly disposed on each spray hole 411. By disposing the water-blocking cover 412 on the spray path of the spray hole 411, the sprayed water can form a directional water curtain or a continuous water flow, thereby better covering the surface of the riser 410 and the adjacent spiral air guide plate 300 area in space, significantly improving the flushing coverage and cleaning intensity.

[0035] In the embodiments of this utility model, such as Figure 1 In the embodiment shown, the tower shell 100 also includes a drain outlet 122 disposed at the bottom of the dehydration section 120.

[0036] By installing a drain outlet 122 at the bottom of the dewatering section 120, the dust-laden wastewater separated by the turbulence structure 400 and the cleaning wastewater generated during the rinsing process can be discharged in a timely and smooth manner. This prevents liquid from accumulating at the bottom of the dewatering section 120, which could lead to secondary water carryover or internal wall corrosion, thus ensuring the safe operation of the reactor. Furthermore, the drain outlet 122 can be connected to an external wastewater treatment system to achieve continuous discharge and centralized treatment of wastewater.

[0037] In the embodiments of this utility model, such as Figure 2 In the embodiment shown, the gas inlet 121 is arranged tangentially along the sidewall of the dehydration section 120.

[0038] By setting the gas inlet 121 along the tangential direction of the side wall of the dehydration section 120, the blast furnace gas enters the spiral guide plate 300 of the dehydration section 120 in a tangential swirling manner. In coordination with the subsequent spiral guide plate 300 and the turbulence riser 410, the centrifugal force is used to achieve the initial separation of droplets and particulate matter in the gas flow, thereby improving the dehydration efficiency.

[0039] Furthermore, the tangential inlet structure can induce airflow rotation without the need for additional guide vanes, simplifying the equipment structure, reducing flow resistance, reducing pressure drop loss, and improving system energy efficiency. In addition, the tangential inlet structure effectively reduces the direct impact of airflow on the internal components of the tower, reduces the risk of wear, and extends the service life of the reactor.

[0040] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified element, component, part, or step, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute “may” include is optional. Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The disclosure of “a” or “an” used to describe an element, component, part, or step does not imply exclusion of other elements, components, parts, or steps.

[0041] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A blast furnace gas dehydration and desulfurization reactor, characterized in that, include: The tower shell includes a desulfurization section and a dehydration section arranged from top to bottom. The desulfurization section is provided with a gas outlet, and the dehydration section is provided with a gas inlet. An exhaust pipe, the outlet of which is connected to the desulfurization section, and the inlet of which is inserted into the dehydration section, with an annular gap formed between the exhaust pipe and the dehydration section; A spiral air guide plate is disposed in the annular gap, and the spiral air guide plate extends downward from the gas inlet to form a spiral dehydration channel; A turbulence-disrupting structure is disposed within the spiral dehydration channel.

2. The blast furnace gas dehydration and desulfurization reactor as described in claim 1, characterized in that, The exhaust pipe includes a conical section and a cylindrical section. The large end of the conical section is connected to the tower shell and divides the tower shell into the desulfurization section and the dehydration section. The lower end of the conical section is connected to the cylindrical section.

3. The blast furnace gas dehydration and desulfurization reactor as described in claim 2, characterized in that, The blast furnace gas dehydration and desulfurization reactor also includes an airflow distributor disposed within the conical section.

4. The blast furnace gas dehydration and desulfurization reactor as described in claim 1, characterized in that, The turbulence structure includes multiple risers that extend along the axial direction of the tower shell within the dewatering section and penetrate the spiral air guide plate. The multiple risers are arranged in an alternating array to form a riser array.

5. The blast furnace gas dehydration and desulfurization reactor as described in claim 4, characterized in that, The riser array is provided in multiple ways, and the multiple riser arrays are arranged in a ring around the exhaust pipe at intervals.

6. The blast furnace gas dehydration and desulfurization reactor as described in claim 4, characterized in that, The blast furnace gas dehydration and desulfurization reactor also includes a flushing water pipe. The top end of the riser is closed, and the bottom end of the riser is connected to the flushing water pipe. At least one spray hole is provided on the side wall of the riser.

7. The blast furnace gas dehydration and desulfurization reactor as described in claim 6, characterized in that, The spray holes are positioned opposite to the airflow delivery direction of the spiral dehydration channel.

8. The blast furnace gas dehydration and desulfurization reactor as described in claim 6, characterized in that, The turbulence structure also includes water-blocking covers correspondingly disposed on each of the spray holes.

9. The blast furnace gas dehydration and desulfurization reactor as described in claim 1, characterized in that, The tower shell also includes a drain outlet located at the bottom of the dehydration section.

10. The blast furnace gas dehydration and desulfurization reactor as described in claim 1, characterized in that, The gas inlet is located tangentially along the sidewall of the dehydration section.

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