Steam-water separation device for steam spraying dust suppression of dry coal shed and spraying dust suppression system

Abstract

The utility model belongs to the technical field of steam-water separation devices, and particularly relates to a steam-water separation device for steam spraying dust suppression of a dry coal shed and a spraying dust suppression system. The steam-water separation device for dry coal shed steam spraying dust suppression comprises a sealed shell, an air inlet and an air outlet are formed in the two side walls of the top of the shell respectively, and a water outlet is formed in the bottom of the shell; a plurality of partition plates arranged at intervals are arranged in the shell and comprise the first partition plate, the second partition plate,..., and the Nth partition plate which are sequentially arranged from the air inlet end to the air outlet end, and N is an odd number larger than or equal to 3. The tops of the first partition plates, the third partition plates and the like at the odd number positions are fixedly connected with the upper wall face of the shell, and the corresponding partition plates are hung upside down. The bottoms of the second partition plates in the even number positions are fixedly connected with the lower wall face of the shell, vertical arrangement of the corresponding partition plates is achieved, and a wavy channel is formed in the shell. The steam-water separation device adopts the design of alternate partition plates, so that the steam-water separation efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of steam-water separation devices, and particularly relates to a steam-water separation device and a spray dust suppression system for steam spraying dust suppression in dry coal sheds. Background Technology

[0002] In the alumina production process, the gasifier is the core of the roasting process, and its gas production efficiency and calorific value have stringent requirements on the quality of lump coal. The dry coal shed bears the heavy responsibility of storing and transporting lump coal. To control coal dust and meet environmental protection requirements, steam spray dust suppression technology is widely used. This technology works by using atomized steam to adsorb coal dust particles, promoting dust settling.

[0003] However, the current steam spray dust suppression technology for dry coal sheds has revealed many thorny problems in practical application. For example, during the transportation of self-generated steam, a large amount of condensate will be generated due to temperature fluctuations or heat dissipation from the pipeline, resulting in excessive water content in the steam. After the wet steam enters the dry coal shed through the spray pipes, the condensate is sprayed with the steam, forming localized dripping and causing water accumulation on the ground of the coal shed. The accumulation of water mixes with the lump coal, leading to a series of serious consequences: the quality of the lump coal deteriorates, with a typical water absorption rate of over 8%, and the calorific value of combustion decreases by 10%-15%, greatly affecting the gasification stability and calorific value of the gasifier; the risk of equipment operation increases, as the accumulated water seeps into the lump coal conveying system, causing equipment corrosion, belt slippage, and even shutdown failures; environmental and safety hazards are aggravated, as the water accumulation on the ground causes coal dust to caking, increasing cleaning costs and increasing the risk of personnel slipping and falling.

[0004] Based on this, the present invention provides a novel steam-water separation device and a spray dust suppression system for steam spraying dust suppression in dry coal sheds, in order to overcome the above-mentioned defects. Utility Model Content

[0005] One objective of this invention is to provide a steam-water separation device for steam spraying dust suppression in dry coal sheds. By alternating the arrangement of inverted and vertical baffles, a wave-shaped channel is constructed, which not only extends the flow path of steam in the device but also significantly increases the probability of water droplets colliding with the baffles, thereby effectively improving the efficiency of steam-water separation and providing a reliable guarantee for steam spraying dust suppression in dry coal sheds.

[0006] The present invention adopts the following technical solution: a steam-water separation device for steam spraying dust suppression in dry coal sheds, the steam-water separation device includes a sealed shell, an air inlet and an air outlet are respectively opened on the two side walls at the top of the shell, and a drain outlet is opened at the bottom of the shell.

[0007] The housing contains multiple spaced partitions, including a first partition, a second partition, ..., an Nth partition arranged sequentially from the air inlet to the air outlet, where N is an odd number ≥ 3.

[0008] In this configuration, the tops of the first partition, the third partition, etc., at odd-numbered positions are fixedly connected to the upper wall of the housing, thus achieving an inverted arrangement of the corresponding partitions; the bottoms of the second partition, etc., at even-numbered positions are fixedly connected to the lower wall of the housing, thus achieving a vertical arrangement of the corresponding partitions, thereby forming a wave-shaped channel within the housing.

[0009] Furthermore, a manhole for inspection and observation is provided on the housing.

[0010] Furthermore, N is 3, and the lengths of the first and second partitions are two-thirds of the height of the shell, while the length of the third partition is one-half of the height of the shell.

[0011] Furthermore, the air inlet is provided with an air inlet pipe, and the air outlet is provided with an air outlet pipe; one end of the air inlet pipe and the air outlet pipe are welded to the shell, and the other end is provided with a first flange, and an annular sealing groove or annular protrusion is formed on the outer end face of the first flange;

[0012] The end of the external pipe is provided with a second flange, which is bolted to the first flange to connect the external pipe with the inlet pipe and the outlet pipe; and an annular protrusion or annular sealing groove matching the annular sealing groove or annular protrusion is formed on the outer end face of the second flange, and the annular protrusion is placed in the annular sealing groove.

[0013] Furthermore, a metal spiral wound gasket is provided inside the annular sealing groove.

[0014] Furthermore, an O-ring is also provided inside the annular sealing groove.

[0015] Furthermore, multiple annular sealing grooves are provided.

[0016] Furthermore, the air inlet and air outlet are located at the same height position of the housing.

[0017] Furthermore, the bottom of the partition at even-numbered positions has a through hole.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] In this utility model, a steam-water separation device for steam spraying dust suppression in dry coal sheds has external pipes connected to both the air inlet and the air outlet. The air inlet is connected to a steam source pipe for transporting wet steam, while the air outlet is connected to a spray pipe for transporting the dried steam after steam-water separation into the dry coal shed to achieve the function of steam spraying dust suppression.

[0020] When the device is operating, wet steam enters the casing through the inlet. Upon entry, the wet steam first encounters an inverted first baffle, forcing it to flow downwards. Next, the steam impacts a vertical second baffle, changing its flow direction upwards. Subsequently, the steam encounters an inverted third baffle, thus forming a continuous "wave-shaped" flow path. During this process, the flow velocity fluctuates due to the continuous changes in the steam channel direction. Due to inertia, denser water droplets gradually separate from the steam. The water droplets continuously impact the baffle surfaces during these multiple flow changes, coalescing into a liquid film. Especially on the inverted baffles, the liquid film settles under gravity, eventually flowing to the bottom of the casing and being discharged through the drain. The separated dry steam then smoothly enters the spray pipe from the outlet and is ultimately transported to the dry coal shed, achieving effective dust suppression under low humidity conditions.

[0021] The steam-water separation device of this utility model constructs a wave-shaped channel by alternating inverted and vertical baffles. This not only extends the flow path of steam in the device but also significantly increases the probability of water droplets colliding with the baffles, thereby effectively improving the efficiency of steam-water separation and providing a reliable guarantee for steam spraying dust suppression in dry coal sheds.

[0022] Another objective of this utility model is to provide a steam spray dust suppression system for dry coal sheds, which includes the aforementioned steam-water separation device for steam spray dust suppression in dry coal sheds. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0024] Figure 1 This is a schematic diagram of the steam-water separation device for steam spraying dust suppression in a dry coal shed, as described in a specific embodiment of this utility model.

[0025] The components include: shell 1, air inlet 10, air outlet 11, drain outlet 12; partition 2, first partition 20, second partition 21, third partition 22; external pipe 3; air inlet pipe 4; air outlet pipe 5; first flange 6, annular sealing groove 60; second flange 7, annular protrusion 70. Detailed Implementation

[0026] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] The following is in conjunction with the appendix Figure 1 The present invention will be described in detail with reference to specific embodiments:

[0028] like Figure 1 As shown, this utility model provides a steam-water separation device for steam spraying dust suppression in dry coal sheds. The steam-water separation device includes a sealed shell 1, with an air inlet 10 and an air outlet 11 respectively opened on the two side walls of the top of the shell 1, and a drain outlet 12 opened at the bottom of the shell 1. In this embodiment, the air inlet 10 and the air outlet 11 are located at the same height position of the shell 1.

[0029] Multiple spaced baffles 2 are provided inside the housing 1. The baffles 2 include a first baffle 20, a second baffle 21, ..., an Nth baffle arranged sequentially from the air inlet to the air outlet, where N is an odd number ≥ 3. In this embodiment, N is 3, and the lengths of the first baffle 20 and the second baffle 21 are two-thirds of the height of the housing 1, while the length of the third baffle 22 is half the height of the housing 1. The first baffle 20 guides steam downwards to the bottom of the housing 1, prolonging the contact time between the steam and the baffle 2 and enhancing the inertial collision of water droplets. Water droplets flow along the surface of the long baffle due to gravity, reducing secondary entrainment. The second baffle 21 forms an upward deflection, using steam power to lift lighter dry steam, while heavier droplets impact the surface of the baffle 2 due to inertia, further separating them. The third baffle 22 shortens the path, allowing dry steam to pass quickly, reducing pressure drop, while intercepting residual water droplets to ensure the final steam dryness.

[0030] In this configuration, the tops of the first partition 20, the third partition 22, etc. at odd-numbered positions are fixedly connected to the upper wall of the housing 1, thereby achieving an inverted arrangement of the corresponding partition 2; the bottoms of the second partition 21, etc. at even-numbered positions are fixedly connected to the lower wall of the housing 1, thereby achieving a vertical arrangement of the corresponding partition 2, so as to form a wave-shaped channel within the housing 1.

[0031] In this utility model, the steam-water separation device for steam spraying dust suppression in dry coal sheds has an external pipe 3 connected to both the air inlet 10 and the air outlet 11. The air inlet 10 is connected to a steam source pipe for transporting wet steam, while the air outlet 11 is connected to a spray pipe for transporting the dry steam after steam-water separation into the dry coal shed to achieve the function of steam spraying dust suppression.

[0032] When the device is operating, wet steam enters the casing 1 through the inlet 10. Upon entry, the wet steam first encounters the inverted first baffle 20, forcing it to flow downwards. Next, the steam impacts the vertical second baffle 21, changing its flow direction upwards. Subsequently, the steam encounters the inverted third baffle 22, thus forming a continuous "wave-shaped" flow path. During this process, the flow velocity fluctuates due to the continuous changes in the direction of the steam channel. Due to inertia, denser water droplets gradually separate from the steam. The water droplets continuously impact the baffle surfaces during these multiple flow changes, coalescing into a liquid film. Especially on the inverted baffle 2, the liquid film settles under gravity, eventually flowing to the bottom of the casing and being discharged through the drain 12. The separated dry steam smoothly enters the spray pipe from the outlet 11 and is ultimately transported to the dry coal shed, achieving effective dust suppression under low humidity conditions.

[0033] This utility model's steam-water separation device, through the alternating arrangement of inverted and vertical baffles, constructs a wave-shaped channel. This not only extends the steam flow path within the device but also significantly increases the probability of water droplets colliding with the baffles, thereby effectively improving the efficiency of steam-water separation and providing a reliable guarantee for steam spraying dust suppression in dry coal sheds. Specifically, the steam-water separation device separates steam condensate from steam, improving the steam spraying effect while reducing the amount of water carried by the steam, decreasing surface water in the coal shed, improving the internal environment of the dry coal shed, improving the quality of lump coal, effectively ensuring the stable operation of the generator, increasing the calorific value of the fuel gas, improving the roasting effect in the roasting workshop, and enhancing the quality of alumina.

[0034] Furthermore, a manhole (not shown in the figure) is provided on the housing 1 for maintenance and observation. The manhole usually allows personnel to directly enter the housing 1 to clean scale on the surface of the partition 2 (such as sulfide deposits in coal-fired steam), repair weld cracks in the partition 2 (fatigue damage easily caused by long-term impact of high-temperature steam), and adjust the spacing between adjacent partitions 2, etc.

[0035] It should be noted that the installation position of the partition 2 within the housing 1 is adjustable, such as by adjusting the spacing to different intervals to achieve different separation efficiencies for steam with varying humidity. There are various methods to achieve this adjustable installation, which are not specifically limited in this invention. Those skilled in the art can choose according to the actual situation, and all such methods fall within the protection scope of this invention.

[0036] Furthermore, the air inlet 10 is provided with an air inlet pipe 4, and the air outlet 11 is provided with an air outlet pipe 5; one end of the air inlet pipe 4 and the air outlet pipe 5 are welded to the housing 1, and the other end is welded with a first flange 6, and an annular sealing groove 60 or an annular protrusion 70 is formed on the outer end face of the first flange 6.

[0037] A second flange 7 is welded to the end of the external pipe 3. The second flange 7 is bolted to the first flange 6 to connect the external pipe 3 with the air inlet pipe 4 and the air outlet pipe 5. An annular protrusion 70 or an annular sealing groove 60 that matches the annular sealing groove 60 or annular protrusion 70 is formed on the outer end face of the second flange 7. The annular protrusion 70 is placed in the annular sealing groove 60.

[0038] During the installation of the external pipe 3, the annular protrusion 70 embeds into the annular sealing groove 60, and then bolts are used to tightly connect the second flange 7 to the first flange 6. The interplay between the annular protrusion 70 and the annular sealing groove 60 offers several advantages. First, they create a multi-layered sealing structure, effectively preventing leakage at the flange connection for gases, liquids, and other media, significantly improving system reliability and safety. Second, this fit increases the contact area between the flanges, enhancing both connection strength and stability. Even under external forces or system vibration, the flange connection is less prone to loosening or deformation, and misalignment of the flanges during installation and use is effectively prevented.

[0039] In addition, the second flange 7 and the first flange 6 are connected by bolts. This connection method is extremely simple, making the disassembly and assembly of the external pipe 3 convenient and facilitating later maintenance and repair.

[0040] Specifically, a metal spiral wound gasket is provided within the annular sealing groove 60. By compressing the metal spiral wound gasket between the second flange 7 and the first flange 6 through bolt pre-tightening force, a radial + axial double sealing interface is formed, which enhances the sealing performance for the harsh operating conditions (high-temperature steam, coal dust erosion, vibration and impact) of the dry coal shed steam-water separation device.

[0041] More specifically, an O-ring is also provided within the annular sealing groove 60. The O-ring, in conjunction with the spiral wound gasket, further enhances the sealing effect. The O-ring possesses good elasticity and flexibility, allowing it to fit tightly within the annular sealing groove 60 and into the gaps between the spiral wound gasket and the groove wall under the pre-tightening force of the bolts. While the spiral wound gasket itself has good sealing performance, it may have some minor gaps or unevenness. The O-ring can effectively fill these gaps, preventing fluid leakage from these weak points, thereby improving the overall sealing performance.

[0042] Furthermore, during equipment operation, flange connections may deform to some extent due to factors such as temperature changes and pressure fluctuations. O-rings, with their elasticity, can effectively adapt to these deformations, maintaining pressure on the spiral wound gasket and ensuring a tight seal against the sealing surface, thus guaranteeing reliable sealing. Even if the spiral wound gasket experiences a decrease in sealing performance due to deformation, the O-ring can still provide some compensation, maintaining the sealing effect.

[0043] Furthermore, multiple annular sealing grooves 60 are provided, and these multiple annular sealing grooves 60 are arranged concentrically on the outer end face of the first flange 6. The diameters of these sealing grooves increase or decrease sequentially, nested like concentric circles. The multiple nested annular sealing grooves 60 can construct a multi-layered sealing defense, enhancing the sealing effect.

[0044] Furthermore, the bottom of the partition 2 at even-numbered positions is provided with a through hole, which facilitates the liquid to be directly collected at the drain outlet 12, shortening the drainage path and improving drainage efficiency.

[0045] Based on the aforementioned steam-water separation device for steam spray dust suppression in dry coal sheds, this utility model further provides a steam spray dust suppression system for dry coal sheds, which includes the aforementioned steam-water separation device. This steam spray dust suppression system for dry coal sheds incorporates all the technical solutions of the aforementioned steam-water separation device and possesses at least all the advantages of the aforementioned steam-water separation device for steam spray dust suppression in dry coal sheds, which will not be elaborated upon here.

[0046] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A steam-water separation device for steam spray dust suppression in dry coal sheds, characterized in that: The gas-water separator includes a sealed housing, with an air inlet and an air outlet respectively opened on the two side walls at the top of the housing, and a drain outlet opened at the bottom of the housing. The housing contains multiple spaced partitions, including a first partition, a second partition, ..., an Nth partition arranged sequentially from the air inlet to the air outlet, where N is an odd number ≥ 3. In this configuration, the tops of the first partition, the third partition, etc., at odd-numbered positions are fixedly connected to the upper wall of the housing, thus achieving an inverted arrangement of the corresponding partitions; the bottoms of the second partition, etc., at even-numbered positions are fixedly connected to the lower wall of the housing, thus achieving a vertical arrangement of the corresponding partitions, thereby forming a wave-shaped channel within the housing.

2. The steam-water separation device for steam spray dust suppression in dry coal sheds according to claim 1, characterized in that: The shell has manholes for inspection and observation.

3. The steam-water separation device for steam spray dust suppression in dry coal sheds according to claim 1, characterized in that: N is 3, and the lengths of the first and second partitions are two-thirds of the height of the shell, while the length of the third partition is one-half of the height of the shell.

4. The steam-water separation device for steam spray dust suppression in dry coal sheds according to claim 1, characterized in that: The air inlet is provided with an air inlet pipe, and the air outlet is provided with an air outlet pipe; one end of the air inlet pipe and the air outlet pipe are welded to the shell, and the other end is provided with a first flange, and an annular sealing groove or annular protrusion is formed on the outer end face of the first flange; The end of the external pipe is provided with a second flange, which is bolted to the first flange to connect the external pipe with the inlet pipe and the outlet pipe; and an annular protrusion or annular sealing groove matching the annular sealing groove or annular protrusion is formed on the outer end face of the second flange, and the annular protrusion is placed in the annular sealing groove.

5. The steam-water separation device for steam spray dust suppression in dry coal sheds according to claim 4, characterized in that: The annular sealing groove is equipped with a metal spiral wound gasket.

6. The steam-water separation device for steam spray dust suppression in dry coal sheds according to claim 5, characterized in that: The annular sealing groove is also equipped with an O-ring.

7. The steam-water separation device for steam spray dust suppression in dry coal sheds according to claim 4, characterized in that: Multiple annular sealing grooves are provided.

8. The steam-water separation device for steam spray dust suppression in dry coal sheds according to claim 1, characterized in that: The air inlet and air outlet are located at the same height position of the housing.

9. The steam-water separation device for steam spray dust suppression in dry coal sheds according to claim 1, characterized in that: A through hole is provided at the bottom of the partition at even-numbered positions.

10. A steam spray dust suppression system for dry coal sheds, characterized in that: Includes the steam-water separation device for steam spray dust suppression in dry coal sheds as described in any one of claims 1 to 9.

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