Water seal and dechlorination integrated device
By integrating the water seal function in the gas desulfurization tower, the problem of large equipment and cumbersome maintenance in the blast furnace gas dechlorination system is solved, and smoother gas transportation and efficient dechlorination effect are achieved.
Patent Information
- Application Number
- CN202422499801.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-10-15
AI Technical Summary
In the existing blast furnace gas dechlorination system, the equipment covers a large area, excessive system resistance and cumbersome maintenance, especially the external configuration of the water seal structure and switching equipment, resulting in complex system.
The water seal function is integrated into the gas desulfurization tower, and the water seal cutting function is realized through the U-cavity and water seal pipeline system. Combined with chlorine water spray and mechanical water removal layer, reducing the setting of cutting valves and independent water seals.
It achieves smoother gas transmission, reduces system resistance, reduces equipment maintenance workload, improves dechlorination efficiency and reduces water consumption.
Smart Images
Figure CN223292498U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of blast furnace gas transmission and distribution systems, in particular to a water seal dechlorination integrated device. Background Art
[0002] The raw gas produced during blast furnace smelting contains dust and harmful substances such as chlorine, sulfur, and ammonia. Therefore, blast furnace gas needs to be dusted before discharge, that is, chlorine, sulfur, ammonia and other harmful substances are removed.
[0003] Currently, blast furnace gas dechlorination is primarily achieved through dry and wet methods. Wet dechlorination typically involves spraying alkali solution through pipelines. Existing systems typically utilize a gas pipeline system, butterfly valve, water seal / slide valve, and gas scrubber. The water seal / slide valve serves as a switching device between the gas pipeline system and the scrubber. The external placement of this switching device occupies a large footprint, and the excessive number of devices leads to excessive system resistance and cumbersome maintenance. Utility Model Content
[0004] In response to the above-mentioned defects of the existing technology, a water seal dechlorination integrated device is provided, which integrates the water seal function in the gas desulfurization tower, making the gas transportation smoother, reducing the layout of the cut-off valve, effectively reducing the system resistance, and reducing the workload of subsequent equipment maintenance.
[0005] The technical solution adopted by the present invention to solve the above technical problems is:
[0006] The water seal dechlorination integrated device includes a gas inlet system, a gas outlet system, and a chlorine water spray pipe system; it is characterized in that it also includes a gas desulfurization tower and a water seal pipeline system.
[0007] The coal gas desulfurization tower includes a tower body supported on the ground by columns. The tower body is provided with a U-shaped cavity. An air inlet is provided on one side of the U-shaped cavity and is connected to the coal gas intake system. An exhaust port is provided on the other side of the U-shaped cavity and is connected to the coal gas outlet system. The U-shaped cavity is divided into an air intake vertical section, an air outlet vertical section, and a horizontal section. The chlorine water spray pipe system is provided on the side wall of the air intake vertical section and is higher than the highest point of the horizontal section.
[0008] The water seal piping system includes an inlet pipe assembly and a drainage pipe assembly. The inlet pipe assembly is connected to the side wall of the inlet vertical section or the drainage vertical section, and the connection point between the inlet pipe assembly and the tower body is higher than the highest point of the horizontal section; the drainage pipe assembly is connected to the bottom of the horizontal section.
[0009] According to the above technical solution, the water inlet pipe assembly includes a water inlet pipe and a water inlet valve provided on the air inlet pipe. The middle part of the water inlet pipe is vertically bent to form a water seal for the water inlet pipe, and the connection point between the water inlet pipe and the vertical water inlet section is higher than the apex of the bend.
[0010] The drainage pipeline assembly includes a drainage pipe and a drainage valve arranged on the drainage pipe. The top of the drainage pipe is connected to the bottom of the transverse section, and the bottom of the drainage pipe is connected to the external water collection ditch.
[0011] According to the above technical solution, the drainage pipeline assembly also includes a leak-proof gas drainer, which is installed on the drainage pipe and located between the tower body and the external water collection ditch; a water supply pipe is provided between the water inlet pipe and the leak-proof drainer, and a water supply valve is provided on the pipe.
[0012] According to the above technical solution, an overflow pipe is provided on the anti-leakage gas drainer. The middle part of the overflow pipe is vertically bent to form an overflow pipeline water seal. A cut-off valve is provided on the overflow pipe; a discharge pipe is provided at the top of the overflow pipe, and the bottom end of the overflow pipe is connected to the external water collection ditch.
[0013] According to the above technical solution, the chlorine water spray pipe system includes multiple layers of alkali solution spray layers and spray water supply pipelines. The multiple layers of alkali solution spray layers are arranged at intervals in the vertical direction of the tower body's air inlet vertical section, and spray guns are installed in the alkali solution spray layers; the spray water supply pipeline adopts the existing structure and is connected to the spray gun of each layer of alkali solution spray layer, and a regulating valve is installed in the spray water supply pipeline.
[0014] According to the above technical solution, each spray layer contains multiple spray guns, which are arranged circumferentially on the side wall of the tower body's air inlet vertical section, and the spray guns of each spray layer are located on the same horizontal plane; each spray gun is connected to the spray water supply pipeline.
[0015] According to the above technical solution, each spray layer contains three spray guns, and the angle between the axes of two adjacent spray guns is 120°.
[0016] According to the above technical solution, a mechanical water removal layer is also included. The mechanical water removal layer is arranged on the inner wall of the tower body exhaust vertical section, and the bottom height of the mechanical water removal layer is greater than the height of the overflow pipe at the connection point of the vent pipe.
[0017] According to the above technical solution, the tower body is coated with glass flakes and the side wall of the tower body is also equipped with a liquid level gauge, which is connected to the water seal piping system. The mechanical water removal layer adopts a stainless steel orifice plate corrugated structure.
[0018] According to the above technical solution,
[0019] The utility model has the following beneficial effects:
[0020] 1. Water is injected into the U-shaped cavity of the tower body through the side wall of the air inlet vertical section or the exhaust vertical section of the U-shaped cavity of the tower body through the water inlet pipeline assembly. The water overflows the horizontal section of the U-shaped cavity, thereby forming a U-shaped water seal in the U-shaped cavity. In this way, the tower body can realize the water seal cut-off function; when the gas system maintenance is completed, open the valve of the drainage pipeline assembly at the bottom, and after the water in the tower body is emptied, the tower body is used as a gas dechlorination tower. Based on the above measures, this blast furnace gas dechlorination tower has both water seal cut-off function and water washing and dechlorination function, which not only makes the gas transportation smoother and reduces the layout of the cut-off butterfly valve; it also reduces the setting of independent water seals, effectively reduces system resistance, and reduces the workload of later equipment maintenance.
[0021] 2. Install a leak-proof gas drainer within the drainage pipe assembly to create a water seal within the drainage pipe. This prevents gas from leaking from the drainage pipe assembly during normal tower operation while also collecting wastewater generated during normal tower operation through the drain pipe, achieving both water seal drainage and tower drainage functions.
[0022] 3. A spray gun is installed in the tower body to spray and clean chloride ions. The dechlorination efficiency can reach more than 95% with low water consumption. In addition, a dehydration filler layer is set on the upper part of the alkali solution spray layer to further remove chloride ions in the coal gas.
[0023] 4. A mechanical water removal layer is set on the gas outlet vertical section, using stainless steel perforated plate corrugated filler, which has the characteristics of not easy to clog, large flow rate, small resistance, and low pressure drop. It can effectively intercept the droplets entrained by the gas and reduce the impact of the water on the service life of the hydrolyzer.
[0024] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the following is a detailed description of the preferred embodiments of the present invention with the accompanying drawings. The specific implementation methods of the present invention are given in detail in the following embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.
[0026] Figure 1 This is a schematic diagram of the structure of the embodiment provided by the utility model Figure 1 ;
[0027] Figure 2 This is a schematic diagram of the structure of the embodiment provided by the utility model under the water injection state Figure 2 ;
[0028] Figure 3 This is a schematic diagram of the principle of an embodiment provided by the utility model;
[0029] In the figure, 1. Gas intake system; 2. Gas outlet system; 3. Chlorine water spray pipe system; 3-1. Multi-layer alkali spray layer; 3-11. Spray gun; 3-2. Spray water supply pipeline; 4. Gas desulfurization tower; 4-1. Tower body; 4-11. Air inlet; 4-12. Exhaust port; 4-2. U-shaped cavity; 4-21. Air intake vertical section; 4-22. Air outlet vertical section; 4-23. Horizontal section; 5. Water seal piping system; 5-1. Inlet Water pipeline assembly; 5-11, water inlet pipe; 5-12, water inlet valve; 5-13, water inlet pipeline water seal; 5-2, drainage pipeline assembly; 5-21, drainage pipe; 5-22, drainage valve; 6, column; 7, ground; 8, external water collection ditch; 9, anti-leakage gas drainer; 10, water supply pipeline; 10-1, water supply valve; 11, vent pipe; 11-1, shut-off valve; 12, overflow pipe; 13, mechanical water removal layer. DETAILED DESCRIPTION
[0030] The following is combined with Figure 1-3 The principles and features of the present invention are described, and the examples provided are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.
[0031] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0033] Reference Figures 1 to 3As shown, the utility model provides a water seal dechlorination integrated device.
[0034] Example 1
[0035] It includes a gas inlet system 1, a gas outlet system 2, and a chlorine water spray pipe system 3; it also includes a gas desulfurization tower 4 and a water seal pipeline system 5.
[0036] The coal gas desulfurization tower includes a tower body 4-1, which is supported on the ground 7 by columns 6. A U-shaped cavity 4-2 is provided within the tower body. An air inlet 4-11 is provided on one side of the U-shaped cavity, connected to the coal gas intake system, and an exhaust port 4-12 is provided on the other side of the U-shaped cavity, connected to the coal gas exhaust system. The U-shaped cavity is divided into an air inlet vertical section 4-21, an air outlet vertical section 4-22, and a transverse section 4-23. A chlorine water spray pipe system is provided on the side wall of the air inlet vertical section and is higher than the highest point of the transverse section.
[0037] The water seal piping system includes an inlet pipe assembly 5-1 and a drainage pipe assembly 5-2. The inlet pipe assembly is connected to the side wall of the inlet vertical section or the drainage vertical section, and the connection point between the inlet pipe assembly and the tower body is higher than the highest point of the horizontal section; the drainage pipe assembly is connected to the bottom of the horizontal section.
[0038] In this embodiment, water is injected into the U-shaped cavity of the tower body through the side wall of the air intake vertical section or the exhaust vertical section of the U-shaped cavity of the tower body through the water inlet pipeline assembly. The water overflows the horizontal section of the U-shaped cavity, thereby forming a U-shaped water seal in the U-shaped cavity. In this way, the tower body can realize the water seal cut-off function; when the gas system maintenance is completed, the valve of the drainage pipeline assembly at the bottom is opened, and after the water in the tower body is emptied, the tower body is used as a gas dechlorination tower. Based on the above measures, the blast furnace gas dechlorination tower has both water seal cut-off function and water washing and dechlorination function, which can not only make the gas transportation smoother and reduce the layout of the cut-off butterfly valve; it can also reduce the setting of independent water seals, effectively reduce system resistance, and reduce the workload of later equipment maintenance.
[0039] The water inlet pipe assembly includes a water inlet pipe 5-11 and a water inlet valve 5-12 provided on the air inlet pipe. The middle part of the water inlet pipe is vertically bent to form a water seal 5-13 for the water inlet pipe, and the connection point between the water inlet pipe and the water inlet vertical section is higher than the top of the bend.
[0040] The drainage pipeline assembly includes a drainage pipe 5-21 and a drainage valve 5-22 arranged on the drainage pipeline. The top of the drainage pipe is connected to the bottom of the transverse section, and the bottom of the drainage pipe is connected to the external water collection ditch 8.
[0041] Example 2
[0042] The structure and principle of Example 2 are similar to those of Example 1, except that: since the tower body is supported on the ground by columns, the bottom of the tower body is suspended in the air, in order to prevent gas from leaking from the drainage pipe assembly at the bottom of the tower body; the drainage pipe assembly also includes a leak-proof gas drainer 9, which is arranged on the drainage pipe and is located between the tower body and the external water collection ditch. The drainage pipe is connected between the tower body and the leak-proof gas drainer, and between the leak-proof gas drainer and the external water collection ditch; a water supply pipe 10 is provided between the water inlet pipe and the leak-proof drainer, and a water supply valve 10-1 is provided on the pipe.
[0043] In this embodiment, a leak-proof gas drainer is installed in the drainage pipe assembly, which forms a water seal in the drainage pipe. This prevents gas in the tower from leaking through the drainage pipe assembly while collecting wastewater generated during normal tower operation through the drainage pipe.
[0044] In Example 3, in order to drain the gas in the leak-proof gas drainer when a water seal is formed on the tower body, an overflow pipe 12 is provided on the leak-proof gas drainer. The middle part of the overflow pipe is vertically bent to form an overflow pipeline water seal. A shut-off valve 12-1 is provided on the overflow pipe; a vent pipe 11 is provided at the top of the overflow pipe, and the bottom end of the overflow pipe is connected to an external water collection ditch.
[0045] In this embodiment, during normal operation of the tower, the shutoff valve is closed to cut off the connection between the leak-proof gas drainer and the outside world and the overflow pipe. After a water seal is formed within the tower, the shutoff valve is opened to discharge the gas entering the leak-proof gas drainer into the atmosphere.
[0046] Example 3
[0047] The structure and principle of Example 3 are similar to those of Example 1 or 2, except that: the chlorine water spray pipe system includes a multi-layer alkali solution spray layer 3-1 and a spray water supply pipeline 3-2, the multi-layer alkali solution spray layer is arranged at intervals in the vertical direction of the tower body air inlet vertical section, and a spray gun is provided in the alkali solution spray layer; the spray water supply pipeline adopts the existing structure and is connected to the spray gun of each layer of the alkali solution spray layer, and a regulating valve is provided in the spray water supply pipeline.
[0048] Each spray layer contains multiple spray guns 3-11, which are arranged circumferentially on the side wall of the tower body's air inlet vertical section, and the spray guns of each spray layer are located on the same horizontal plane; each spray gun is connected to the spray water supply pipeline.
[0049] Preferably, each spray layer contains three spray guns, and the angle between the axes of two adjacent spray guns is 120°; it can be adjusted according to the diameter of the tower body to ensure full coverage of the spray range.
[0050] Example 4
[0051] The structure and principle of Example 4 are similar to those of Example 1 or 2, except that it also includes a mechanical water removal layer 13, which is arranged on the inner wall of the vertical exhaust section of the tower body, and the bottom height of the mechanical water removal layer is greater than the height of the overflow pipe at the connection point of the vent pipe.
[0052] In Examples 1-3, the mechanical water removal layer utilizes a corrugated stainless steel perforated plate structure. Water in the gas condenses on the stainless steel perforated plates and collects in the transverse section of the tower body, ultimately flowing into the leak-proof gas drainer. This layer is characterized by high flow rate, low resistance, and low pressure drop, effectively preventing the impact of mechanical water on the gas system.
[0053] In Examples 1-3, glass flakes are coated inside the tower, effectively reducing chloride corrosion and extending the service life of the equipment. A liquid level gauge 14 is also provided on the sidewall of the tower. The gauge is connected to the water seal piping system and regulates the liquid level within the tower through the gauge and the water seal piping system.
[0054] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.
Claims
1. The integrated water seal dechlorination device includes a gas inlet system, a gas outlet system, and a chlorine water spray pipe system; its characteristics are: It also includes a gas desulfurization tower and a water seal piping system; The coal gas desulfurization tower includes a tower body supported on the ground by columns. The tower body is provided with a U-shaped cavity. An air inlet is provided on one side of the U-shaped cavity and is connected to the coal gas intake system. An exhaust port is provided on the other side of the U-shaped cavity and is connected to the coal gas outlet system. The U-shaped cavity is divided into an air intake vertical section, an air outlet vertical section, and a horizontal section. The chlorine water spray pipe system is provided on the side wall of the air intake vertical section and is higher than the highest point of the horizontal section. The water seal piping system includes an inlet pipe assembly and a drainage pipe assembly. The inlet pipe assembly is connected to the side wall of the inlet vertical section or the drainage vertical section, and the connection point between the inlet pipe assembly and the tower body is higher than the highest point of the horizontal section; the drainage pipe assembly is connected to the bottom of the horizontal section.
2. The integrated water seal and dechlorination device according to claim 1, characterized in that: The water inlet pipe assembly includes a water inlet pipe and a water inlet valve provided on the air inlet pipe. The middle part of the water inlet pipe is vertically bent to form a water seal for the water inlet pipe, and the connection point between the water inlet pipe and the vertical water inlet section is higher than the apex of the bend. The drainage pipeline assembly includes a drainage pipe and a drainage valve arranged on the drainage pipe. The top of the drainage pipe is connected to the bottom of the transverse section, and the bottom of the drainage pipe is connected to the external water collection ditch.
3. The integrated water seal and dechlorination device according to claim 2, characterized in that: The drainage pipeline assembly also includes a leak-proof gas drainer, which is installed on the drainage pipe and located between the tower body and the external water collection ditch; a water supply pipe is connected between the water inlet pipe and the leak-proof drainer, and a water supply valve is provided on the pipe.
4. The integrated water seal and dechlorination device according to claim 3, characterized in that: An overflow pipe is provided on the anti-leakage gas drainer. The middle part of the overflow pipe is vertically bent to form an overflow pipeline water seal. A cut-off valve is provided on the overflow pipe. A discharge pipe is provided at the top of the overflow pipe, and the bottom end of the overflow pipe is connected to the external water collection ditch.
5. The integrated water seal and dechlorination device according to claim 1, characterized in that: The chlorine water spray pipe system includes multiple layers of alkali solution spray layers and spray water supply pipelines. The multiple layers of alkali solution spray layers are arranged at intervals in the vertical direction of the tower body's air inlet vertical section, and spray guns are installed in the alkali solution spray layers; the spray water supply pipeline adopts the existing structure and is connected to the spray gun of each layer of alkali solution spray layer, and a regulating valve is installed in the spray water supply pipeline.
6. The integrated water seal and dechlorination device according to claim 5, characterized in that: Each spray layer contains multiple spray guns, which are arranged at intervals on the side walls of the tower body's air inlet vertical section, and the spray guns of each spray layer are located on the same horizontal plane; each spray gun is connected to the spray water supply pipeline.
7. The integrated water seal and dechlorination device according to claim 1, characterized in that: Each spray layer contains three spray guns, and the angle between the axes of two adjacent spray guns is 120°.
8. The integrated water seal and dechlorination device according to claim 1, characterized in that: It also includes a mechanical water removal layer, which is arranged on the inner wall of the exhaust vertical section of the tower body, and the bottom height of the mechanical water removal layer is greater than the height of the overflow pipe at the connection point of the discharge pipe.
9. The integrated water seal and dechlorination device according to claim 1, characterized in that: The mechanical water removal layer adopts a stainless steel perforated plate corrugated structure.
10. The integrated water seal and dechlorination device according to claim 1, characterized in that: Glass flakes are coated on the tower body; a liquid level gauge is also provided on the side wall of the tower body, and the liquid level gauge is connected to the water seal pipeline system.