Dry quenching boiler fixed-connection discharged steam recycling method

Abstract

The invention relates to the technical field of blow-off of dry quenching boilers, in particular to a dry quenching boiler constant-connection discharged steam recycling method which comprises a supporting table, a quenching boiler drum is fixedly connected to the middle of the bottom of the supporting table, and material passing pipelines are fixedly connected to the top of the quenching boiler drum in an annular array mode. Pollution discharge expanders are fixedly connected to multiple sides of the top of the supporting table, the ends, away from the quenching boiler drum, of the multiple material passing pipelines extend to the top of the supporting table and are fixedly connected to the bottoms of the multiple pollution discharge expanders, and an exhaust mechanism is fixedly connected to the front side of the top of the supporting table; by arranging the supporting table, the coke quenching boiler drum, the material passing pipeline, the sewage discharging expander, the steam compressors and the exhaust mechanism, intelligent management and efficient utilization of discharged and dispersed steam are achieved, the steam passing pipeline is automatically switched, the steam discharging efficiency is improved, and the energy consumption is reduced. And the continuous and stable working state of the steam compressor is ensured.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology for dry quenching coke boilers, and more specifically, to a method for recovering and utilizing the diffused steam emitted from a dry quenching coke boiler. Background Technology

[0002] Boiler blowdown systems are divided into continuous blowdown systems and periodic blowdown systems. The continuous blowdown system continuously discharges high-salinity boiler water from the boiler drum to the continuous blowdown expander. The periodic blowdown expander periodically blows the boiler, removing impurities from the steam and water pipes. Currently, in dry-quenched coke boilers, the continuous blowdown water enters the continuous blowdown expander for flash evaporation, and the resulting secondary steam is used for deaeration in the deaerator. The remaining saturated water then enters the periodic blowdown expander, where the flash evaporation steam is directly released into the atmosphere. Similarly, the boiler's periodic blowdown water is directly discharged into the periodic blowdown expander, and the steam generated after flash evaporation is also directly released into the atmosphere. The remaining continuous blowdown water after flash evaporation in the periodic blowdown expander, along with the remaining periodic blowdown water, is discharged into the blowdown well.

[0003] According to patent document CN113122290B, a method for treating commonly used vent gas from dry quenching coke ovens is disclosed. This method involves introducing a portion of the flue gas into the flue gas outlet duct of the dry quenching coke oven through a flue gas pipeline. Using negative pressure suction before the dry quenching circulating fan, the hot flue gas in its pre-storage section, under zero pressure, is naturally drawn under negative pressure to the dry quenching coke oven outlet (i.e., the boiler inlet). Upon contact with the air introduced at this location, it rapidly combusts and transforms into heat, which is then recycled into the dry quenching coke boiler system. This achieves the source collection and recycling of commonly used vent gas from dry quenching coke ovens. This invention addresses the defects and shortcomings of existing dry quenching coke oven vent gas purification methods. It not only eliminates the source of pollutant emissions—commonly used vent gas from the pre-storage section of the dry quenching coke oven—but also increases the steam generation rate of the combustible gas from the combustion of the recycled gas, making it both environmentally friendly and economical.

[0004] In the current dry quenching coke boiler blowdown system, the steam generated by the periodic flash evaporation of the expander is directly discharged into the atmosphere, which is a huge waste of resources. Because dry quenching coke boilers have a large evaporation capacity and usually multiple boilers operate simultaneously, this waste becomes even more serious. Specifically, dry quenching coke boilers generate a large amount of steam during operation. This steam, after being flashed through the expander, should have some utilization value, but the current practice is to directly discharge it into the atmosphere without effective recovery and reuse. This practice not only wastes energy but also causes potential pollution to the environment. Summary of the Invention

[0005] To overcome the aforementioned deficiencies of the prior art, this invention provides a method for recovering and utilizing the diffused steam emitted from a dry quenching coke boiler. The technical problem this invention aims to solve is that, due to the large evaporation capacity of dry quenching coke boilers and the fact that multiple boilers typically operate simultaneously, this waste becomes even more severe. Specifically, dry quenching coke boilers generate a large amount of steam during operation. This steam, after flash evaporation through the expander, should have some utilization value, but the current practice is to directly discharge it into the atmosphere without effective recovery and reuse. This practice not only wastes energy but also poses a potential pollution risk to the environment.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A method for recovering and utilizing the diffused steam emitted from a dry quenching coke boiler includes the following steps:

[0008] Step 1: Through a dedicated pipeline system, the steam generated by the dry quenching boiler during the continuous discharge process is collected to ensure that the steam is not directly released into the atmosphere, thereby reducing energy waste and environmental pollution;

[0009] Step 2: The collected steam is introduced into a purification device to remove impurities and particulate matter, ensuring the purity of the steam and providing a high-quality steam source for subsequent use.

[0010] Step 3: The purified steam is pressurized by a booster pump to increase its pressure level to meet the pressure requirements of subsequent use. The pressurized steam is then transported to the designated use location through pipelines.

[0011] Step 4: The delivered steam is introduced into the heat recovery device to utilize the heat energy of the steam for power generation, heating or other heat energy utilization processes, thereby realizing the heat energy recovery and utilization of the steam and improving energy utilization efficiency.

[0012] Step 5: Throughout the recycling process, a monitoring device is installed to monitor parameters such as steam flow rate, temperature, and pressure in real time. Based on the monitoring results, the system is controlled and adjusted to ensure stable operation and efficient utilization.

[0013] A method for recovering and utilizing the diffused steam from a dry quenching boiler is disclosed. A device for recovering and utilizing the diffused steam from a dry quenching boiler is further proposed as a further embodiment of the invention: It includes a support platform, with a quenching boiler drum fixedly connected to the bottom center of the support platform. A feeding pipe is fixedly connected in a circular array to the top of the quenching boiler drum. Multiple blowdown expanders are fixedly connected to the top of the support platform on several sides. The ends of the feeding pipes away from the quenching boiler drum extend to the top of the support platform and are fixedly connected to the bottom of the multiple blowdown expanders. An exhaust mechanism is fixedly connected to the front of the top of the support platform, and steam compressors are fixedly connected to the left and right sides of the front of the support platform.

[0014] As a further aspect of the present invention: the exhaust mechanism includes a main exhaust box, and a ventilation component is fixedly connected to the front side of the main exhaust box.

[0015] As a further aspect of the present invention: the ventilation assembly includes two air path changing control components. A connecting frame is fixedly connected to the outer side of each of the two air path changing control components. The rear bottom of each of the two connecting frames is fixedly connected to the left and right sides of the front side of the top of the support platform. An air vent is provided on the inner side of each of the two air path changing control components. A double-pass pipe is fixedly connected to the front side of each of the two air path changing control components. The end of the double-pass pipe away from the two air path changing control components is fixedly connected to the rear side of the left steam compressor. The two sides of the rear end of the double-pass pipe are fixedly connected to the left and right sides of the front side of the main exhaust box.

[0016] As a further embodiment of the present invention: both of the air path changing control components include an air box, and baffles are slidably connected to the front sides of the top and bottom of the two air boxes. The inner sides of the left and right sets of baffles extend to the inner walls of the two air boxes. Multiple springs are fixedly connected to the top of the rear sides of the left and right sets of baffles. One end of each set of springs is fixedly connected to multiple sides of the top and bottom of the two air boxes. Side plates are fixedly connected to the left and right sides of the rear sides of the two air boxes.

[0017] As a further aspect of the present invention: racks are fixedly connected to the top and bottom of the outer sides of both sets of side plates; both sets of side plates have a hollow design on both sides of the inner sides of the racks; push-pull plates and sliders are slidably connected to the four inner sides of both sets of side plates; push-pull plates are fixedly connected to the inner sides of the push-pull plates and sliders; columnar horizontal rotating rods are rotatably connected to the top and bottom inner walls of the middle of both sets of push-pull plates; the inner ends of the columnar horizontal rotating rods extend to the inner sides of the two sets of push-pull plates and are fixedly connected to swing rods; the columnar horizontal rotating rods... The outer ends of all the swing rods extend to the outer sides of the left and right side plates and are fixedly connected to gears. The outer walls of the multiple sets of gears mesh with the outer walls of the multiple sets of racks. The outer walls of the multiple sets of swing rods are slidably connected to swing rod trajectory guide blocks. The outer sides of the multiple sets of swing rod trajectory guide blocks are fixedly connected to trajectory guide block rotating rods. The outer ends of the multiple sets of trajectory guide block rotating rods are rotatably connected to the top and bottom of the middle of the inner side of the left and right side plates. The side of the multiple sets of swing rods away from the columnar horizontal rotating rod is rotatably connected to a moving plate. The front side of the inner side of the left and right moving plates is fixedly connected to a stop plate.

[0018] As a further embodiment of the present invention: rectangular connecting plates are fixedly connected to the top and bottom center of the left and right sets of side plates; the inner side of the rectangular connecting plates away from the side plates is in contact with the outer wall of the left and right sets of movable plates; bottom push-pull side plates are fixedly connected to the rear side of the left and right sets of push-pull plates; top push-pull horizontal plates are fixedly connected to the outer side of the left and right sets of bottom push-pull side plates; vertical push-pull side plates are fixedly connected to the top of the left and right sets of top push-pull horizontal plates; and convex push-pull plates are fixedly connected to the inner top of the two inner vertical push-pull side plates.

[0019] As a further embodiment of the present invention: the inner sides of the two rectangular connecting plates at the top inner side are fixedly connected to connecting side plates, and the inner sides of the two connecting side plates are fixedly connected to hydraulic push rod connecting plates, the rear end of the hydraulic push rod connecting plates being fixedly connected to the front middle of the convex push-pull plate.

[0020] As a further aspect of the present invention: the vent pipe includes a vent pipe body, the front end of the vent pipe body is fixedly connected to a vent pipe gas delivery pipe, the end of the vent pipe gas delivery pipe away from the vent pipe body is fixedly connected to the rear side of the right steam compressor, and the rear end of the vent pipe body is fixedly connected to the middle part of the front side of the main exhaust box.

[0021] As a further embodiment of the present invention: a sliding groove plate is fixedly connected to the rear side of the outer wall of the ventilator body. The outer wall of the sliding groove plate is provided with guide grooves in an annular array. The inner walls of the multiple guide grooves provided by the sliding groove plate are slidably connected with expansion and contraction blocks. The rear sides of the multiple expansion and contraction blocks are fixedly connected with expansion and contraction connecting blocks. The inner sides of the multiple expansion and contraction connecting blocks are fixedly connected with columnar expansion and contraction rods. The inner sides of the multiple columnar expansion and contraction rods are fixedly connected with fan-shaped closing blocks. The outer wall of the ventilator body is provided with the same through hole on the side aligned with the multiple fan-shaped closing blocks. The outer walls of the multiple fan-shaped closing blocks are slidably connected to the inner wall of the ventilator body in an annular array. The top of the multiple expansion and contraction blocks is rotatably connected with a rotating inclined rod. The side of the multiple rotating inclined rod away from the expansion and contraction blocks is rotatably connected with a collar. The inner wall of the collar is slidably connected to the outer wall of the ventilator body. The left and right sides of the front side of the collar are fixedly connected with L-shaped push-pull plates. The outer sides of the two L-shaped push-pull plates are fixedly connected to the inner sides of the two inner vertical push-pull side plates.

[0022] The beneficial effects of this invention are as follows:

[0023] This invention, by incorporating a support platform, a coke quenching boiler drum, a feed pipe, a blowdown expander, a steam compressor, and an exhaust mechanism, achieves intelligent management and efficient utilization of exhaust steam. Through automatic switching of the venting pipes, it ensures the continuous and stable operation of the steam compressor, avoiding overall efficiency decline due to a single steam compressor pressure drop. It can automatically adjust the switching timing of the venting pipes based on the real-time pressure of the steam compressor, thereby maximizing the utilization of exhaust steam. Furthermore, the implementation of this method not only reduces energy waste but also effectively reduces environmental pollution, providing strong technical support for energy conservation and emission reduction in dry quenching boilers. Therefore, this invention has broad application prospects and market value, and is of great significance for promoting green industrial development. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the three-dimensional separation structure of the main body of the present invention;

[0026] Figure 3 This is a three-dimensional structural diagram of the main body of the present invention;

[0027] Figure 4 This is a three-dimensional structural diagram of the exhaust mechanism of the present invention;

[0028] Figure 5 This is a schematic diagram of the three-dimensional separation structure of the ventilation component of the present invention;

[0029] Figure 6This is a three-dimensional structural diagram of the gas path alteration control component and the dual-channel pipeline of the present invention;

[0030] Figure 7 This is a three-dimensional structural diagram of the gas path alteration control component of the present invention;

[0031] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle;

[0032] Figure 9 This is a three-dimensional structural diagram of the ventilation component of the present invention;

[0033] Figure 10 This is a schematic diagram of the three-dimensional separation structure of the ventilation component of the present invention.

[0034] In the diagram: 1. Support platform; 2. Quenching boiler drum; 3. Feed pipe; 4. Blowout expander; 5. Steam compressor; 6. Exhaust mechanism; 61. Main exhaust box; 62. Ventilation assembly; 621. Gas path change control assembly; 6211. Ventilation box; 6212. Baffle; 6213. Spring; 6214. Side plate; 6215. Rack; 6216. Rectangular connecting plate; 6218. Push-pull plate slider; 6219. Push-pull plate; 62110. Columnar horizontal rotating rod; 62111. Swing rod; 62112. Swing rod trajectory guide block; 62113. Trajectory guide block rotating rod; 62114. Moving plate; 62115. Gear; 62116. Engagement Side plate; 62117, Hydraulic push rod connecting plate; 62118, Hydraulic push rod; 62119, Convex push-pull plate; 62120, Vertical push-pull side plate; 62121, Top push-pull horizontal plate; 62122, Bottom push-pull side plate; 62123, Support plate; 622, Vent pipe; 6221, Vent pipe body; 6222, Vent pipe air supply pipe; 6223, Sliding groove plate; 6224, Collar; 6225, L-shaped push-pull plate; 6226, Rotating diagonal bar; 6227, Guide groove; 6228, Expanding block; 6229, Expanding connecting block; 62210, Columnar expanding rod; 62211, Fan-shaped closing block; 623, Connecting frame; 624, Double-pass pipe. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] A method for recovering and utilizing the diffused steam emitted from a dry quenching coke boiler includes the following steps:

[0037] Step 1: Through a dedicated pipeline system, the steam generated by the dry quenching boiler during the continuous discharge process is collected to ensure that the steam is not directly released into the atmosphere, thereby reducing energy waste and environmental pollution;

[0038] Step 2: The collected steam is introduced into a purification device to remove impurities and particulate matter, ensuring the purity of the steam and providing a high-quality steam source for subsequent use.

[0039] Step 3: The purified steam is pressurized by a booster pump to increase its pressure level to meet the pressure requirements of subsequent use. The pressurized steam is then transported to the designated use location through pipelines.

[0040] Step 4: The delivered steam is introduced into the heat recovery device to utilize the heat energy of the steam for power generation, heating or other heat energy utilization processes, thereby realizing the heat energy recovery and utilization of the steam and improving energy utilization efficiency.

[0041] Step 5: Throughout the recycling process, monitoring devices are installed to monitor parameters such as steam flow rate, temperature, and pressure in real time. Based on the monitoring results, the system is controlled and adjusted to ensure stable operation and efficient utilization.

[0042] like Figure 1-10As shown, this invention provides a method for recovering and utilizing the diffused steam from a dry quenching boiler. The method includes a support platform 1, with a quenching boiler drum 2 fixedly connected to the bottom center of the support platform 1. A series of feed pipes 3 are fixedly connected to the top of the quenching boiler drum 2 in a ring array. Multiple blowdown expanders 4 are fixedly connected to the top of the support platform 1 on several sides. The ends of the feed pipes 3 away from the quenching boiler drum 2 extend to the top of the support platform 1 and are fixedly connected to the bottom of the multiple blowdown expanders 4. An exhaust mechanism 6 is fixedly connected to the front of the top of the support platform 1. Steam compressors 5 are fixedly connected to the left and right sides of the front of the support platform 1. The exhaust mechanism 6 includes a main exhaust box 61, and a ventilation assembly 62 is fixedly connected to the front of the main exhaust box 61. The ventilation assembly 62 includes two... Two gas path changing control components 621 are provided. Connecting brackets 623 are fixedly connected to the outer sides of each gas path changing control component 621. The rear bottom of each connecting bracket 623 is fixedly connected to the left and right sides of the front top of the support platform 1. Ventilation pipes 622 are provided inside each gas path changing control component 621. A double-pass pipe 624 is fixedly connected to the front of each gas path changing control component 621. The end of the double-pass pipe 624 away from the two gas path changing control components 621 is fixedly connected to the rear of the left steam compressor 5. The two rear ends of the double-pass pipe 624 are fixedly connected to the left and right sides of the front of the main exhaust box 61. Each gas path changing control component 621 includes a vent box 6211. The top and bottom of each vent box 6211 are connected to the front... Each side is slidably connected to a baffle 6212. The inner sides of both sets of baffles 6212 extend to the inner walls of the two ventilation boxes 6211. Multiple springs 6213 are fixedly connected to the top of the rear side of each set of baffles 6212. One end of each set of springs 6213 is fixedly connected to multiple sides of the top and bottom of the two ventilation boxes 6211. Side plates 6214 are fixedly connected to the left and right sides of the rear side of the two ventilation boxes 6211. Racks 6215 are fixedly connected to the top and bottom of the outer sides of each set of side plates 6214. Both sides of the inner sides of each set of side plates 6214 have a hollow design. Push-pull sliders 6218 are slidably connected to the four sides of the inner side of each set of side plates 6214. Each side is fixedly connected to a push-pull plate 6219. The top and bottom inner walls of the middle sections of both push-pull plates 6219 are rotatably connected to columnar horizontal rotating rods 62110. The inner ends of multiple columnar horizontal rotating rods 62110 extend to the inner sides of the two push-pull plates 6219 and are fixedly connected to swing rods 62111. The outer ends of multiple columnar horizontal rotating rods 62110 extend to the outer sides of the two side plates 6214 and are fixedly connected to gears 62115. The outer walls of multiple gears 62115 mesh with the outer walls of multiple racks 6215. The outer walls of multiple swing rods 62111 are slidably connected to swing rod trajectory guide blocks 62112. The outer sides of multiple swing rod trajectory guide blocks 62112 are fixedly connected to trajectory guide block rotating rods 62113.The outer ends of multiple sets of trajectory guide block rotating rods 62113 are rotatably connected to the top and bottom of the inner middle of the left and right side plates 6214. Multiple sets of swing rods 62111 are rotatably connected to a moving plate 62114 on the side away from the columnar horizontal rotating rod 62110. A stop plate 62123 is fixedly connected to the front side of the inner side of the left and right moving plates 62114. Rectangular connecting plates 6216 are fixedly connected to the top and bottom middle of the left and right side plates 6214. The inner side of the multiple sets of rectangular connecting plates 6216 away from the side plate 6214 is in contact with the outer wall of the left and right moving plates 62114. Bottom push-pull side plates 62122 are fixedly connected to the rear side of the left and right push-pull side plates 62122. The outer sides are all fixedly connected to top push-pull horizontal plates 62121. The tops of the left and right sets of top push-pull horizontal plates 62121 are all fixedly connected to vertical push-pull side plates 62120. The inner tops of the two inner vertical push-pull side plates 62120 are fixedly connected to convex push-pull plates 62119. The inner tops of the two inner rectangular connecting plates 6216 are all fixedly connected to connecting side plates 62116. The inner sides of the two connecting side plates 62116 are fixedly connected to hydraulic push rod connecting plates 62117. The rear end of the hydraulic push rod connecting plate 62117 is fixedly connected to the front center of the convex push-pull plate 62119. The vent pipe 622 includes a vent pipe body 6221. The front end of the vent pipe body 6221 is fixedly connected to a vent pipe air supply pipe 6222. One end of the gas supply pipe 6222, away from the main body of the vent pipe 6221, is fixedly connected to the rear side of the right-side steam compressor 5. The rear end of the main body of the vent pipe 6221 is fixedly connected to the middle of the front side of the main exhaust box 61. A sliding plate 6223 is fixedly connected to the rear side of the outer wall of the main body of the vent pipe 6221. Guide grooves 6227 are arranged in a ring array on the outer wall of the sliding plate 6223. The inner walls of the multiple guide grooves 6227 of the sliding plate 6223 are slidably connected to expansion blocks 6228. Expansion connecting blocks 6229 are fixedly connected to the rear side of the multiple expansion blocks 6228. Columnar expansion rods 62210 are fixedly connected to the inner side of the multiple expansion connecting blocks 6229. Fan-shaped closing elements are fixedly connected to the inner side of the multiple columnar expansion rods 62210. The ventilator body 62211 has an identical through hole on one side of its outer wall aligned with multiple fan-shaped closing blocks 62211. The outer walls of the multiple fan-shaped closing blocks 62211 are slidably connected in a ring array to the inner wall of the ventilator body 6221. The tops of multiple expanding and contracting blocks 6228 are rotatably connected to rotating inclined rods 6226. A collar 6224 is rotatably connected to the side of the rotating inclined rods 6226 away from the expanding and contracting blocks 6228. The inner wall of the collar 6224 is slidably connected to the outer wall of the ventilator body 6221. L-shaped push-pull plates 6225 are fixedly connected to the left and right sides of the front side of the collar 6224. The outer sides of the two L-shaped push-pull plates 6225 are fixedly connected to the inner sides of the two inner vertical push-pull side plates 62120.

[0043] When blowdown is required, the wastewater is first heated by flowing into the inner wall of the quenching boiler drum 2. The heated wastewater then flows through multiple feed pipes 3 to the inner wall of the blowdown expander 4, where it undergoes flash deoxygenation. After deoxygenation, the hot gas from the quenching boiler drum 2 and the blowdown expander 4 is discharged through the exhaust mechanism 6 to the inner wall of one of the steam compressors 5 for compression. During exhaust, the gas is discharged through the main exhaust box 61 into the double-pass pipe 624, and then through the double-pass pipe 624 into one of the steam compressors 5. When the pressure of the steam compressor 5 connected to the double-pass pipe 624 drops to the interlock value, the hydraulic push rod 62118 is activated. The hydraulic push rod 62118 pulls the convex push-pull plate 62119 to the rear. 2119 moves backward, thereby causing the two vertical push-pull side plates 62120 to move backward. The two vertical push-pull side plates 62120 move backward, thereby causing the two top push-pull horizontal plates 62121 and the two outer vertical push-pull side plates 62120 to push the bottom push-pull side plates 62122 to move backward. The two sets of bottom push-pull side plates 62122 move backward, thereby pushing the two sets of push-pull plates 6219 to move backward. At the same time as the two sets of push-pull plates 6219 move backward, the gears 62115 and racks 6215 at the outer ends of the columnar horizontal rotating rods 62110 on the inner wall of the middle of the two sets of push-pull plates 6219 mesh, thereby causing the two sets of columnar horizontal rotating rods 62110 to rotate, thereby causing the two sets of swing rods 62111 to swing. The two sets of swing rods 62111 swing simultaneously through... The swing rod trajectory guide block 62112 guides the trajectory. While the two sets of swing rods 62111 swing, they simultaneously drive the two moving plates 62114 to move relative to each other. This relative movement of the two moving plates 62114 also drives the two abutment plates 62123 to move relative to each other. The relative movement of the two abutment plates 62123 then pushes the two baffles 6212 inwards, closing the two vent boxes 6211. Simultaneously, the convex push-pull plate 62119 moves backwards, driving the two L-shaped push-pull plates 6225 backwards. The two L-shaped push-pull plates 6225 then move the collar 6224 backwards, which, through the rotation of multiple outer rotating inclined rods 6226, pushes multiple expanding and contracting blocks 6228 onto the sliding groove plate 6. The inner walls of the multiple guide grooves 6227 opened in 223 move, thereby driving multiple expansion and contraction connecting blocks 6229 to pull multiple columnar expansion and contraction rods 62210 and fan-shaped closing blocks 62211 to move outward. This causes the multiple fan-shaped closing blocks 62211 to no longer adhere to the inner wall of the vent pipe body 6221, allowing the vent pipe body 6221 to begin venting. At this time, the gas delivered from the main exhaust box 61 is discharged through the vent pipe body 6221 to the inner wall of another steam compressor 5 for compression. When the pressure inside the steam compressor 5 also drops to the interlock value, the above mechanism is activated in reverse, using the opposite action principle, causing the vent pipe 622 to switch back to the steam compressor 5 that was originally connected to the dual-pass pipe 624. This process achieves continuous and effective gas compression.It improves energy efficiency;

[0044] In addition, the flash deoxygenation process of the sewage expander 4 effectively removes oxygen from the sewage, reduces the corrosion risk of the boiler system, and extends the service life of the equipment. At the same time, the entire recycling method is compact and has a reasonable structure, which not only improves space utilization but also facilitates later maintenance and repair work.

[0045] In summary, the method for recovering and utilizing the exhaust steam from a dry quenching coke boiler provided by this invention, through a series of ingenious designs, achieves effective recovery and utilization of exhaust steam, improves energy efficiency, reduces environmental pollution, and has significant economic and environmental benefits.

[0046] Working principle of this invention: When sewage discharge is required, the sewage is first discharged into the inner wall of the quenching boiler drum 2 for heating. The heated sewage is then discharged through multiple feed pipes 3 to the inner wall of the sewage discharge expander 4 for flash deoxygenation. After deoxygenation, the hot gas in the quenching boiler drum 2 and the sewage discharge expander 4 is discharged through the exhaust mechanism 6 to the inner wall of one of the steam compressors 5 for compression. During exhaust, the gas is discharged through the main exhaust box 61 into the double-pass pipe 624, and then through the double-pass pipe 624 into one of the steam compressors 5. When the pressure of the steam compressor 5 connected to the double-pass pipe 624 drops to the interlock value, the hydraulic push rod 62118 is activated. The hydraulic push rod 62118 pulls the convex push-pull plate 62119 towards... The rearward movement causes the convex push-pull plate 62119 to move rearward, which in turn drives the two vertical push-pull side plates 62120 to move rearward. The two vertical push-pull side plates 62120 then move rearward, which in turn drives the two top push-pull horizontal plates 62121 and the two outer vertical push-pull side plates 62120 to push the bottom push-pull side plates 62122 to move rearward. The two sets of bottom push-pull side plates 62122 then move rearward, which in turn pushes the two sets of push-pull plates 6219 to move rearward. Simultaneously, as the two sets of push-pull plates 6219 move rearward, the gears 62115 and racks 6215 at the outer ends of the columnar horizontal rotating rods 62110 on the inner wall of the middle of the two sets of push-pull plates 6219 mesh, causing the two sets of columnar horizontal rotating rods 62110 to rotate, which in turn drives the two sets of swing rods 62111 to swing. As the lever 62111 swings, it is guided by the swing lever trajectory guide block 62112. Simultaneously, the two sets of swing levers 62111 swing, causing the two moving plates 62114 to move relative to each other. This relative movement of the two moving plates 62114, in turn, causes the two abutment plates 62123 to move relative to each other. This relative movement of the two abutment plates 62123 then pushes the two baffles 6212 inwards, closing the two vent boxes 6211. At the same time, the convex push-pull plate 62119 moves backwards, causing the two L-shaped push-pull plates 6225 to move backwards. This movement of the two L-shaped push-pull plates 6225 in turn causes the collar 6224 to move backwards, which in turn rotates and pushes the collar through the multiple rotating inclined rods 6226 on the outer side. Multiple expansion and contraction blocks 6228 move along the inner wall of multiple guide grooves 6227 opened in the sliding plate 6223, thereby driving multiple expansion and contraction connecting blocks 6229 to pull multiple columnar expansion and contraction rods 62210 and fan-shaped closing blocks 62211 to move outward, so that the multiple fan-shaped closing blocks 62211 are no longer attached to the inner wall of the vent pipe body 6221, and the vent pipe body 6221 begins to ventilate. At this time, the gas sent out by the total exhaust box 61 is discharged through the vent pipe body 6221 to the inner wall of another steam compressor 5 for compression. When the pressure in the steam compressor 5 also drops to the interlock value, the above mechanism is activated in reverse, and the vent pipe 622 is switched back to the steam compressor 5 that was originally connected to the double-pass pipe 624 by the opposite action principle.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A method for recycling exhaust steam during constant discharge of a dry quenching boiler, characterized by comprising the following steps: Step 1: Collect the steam generated during the constant discharge of the dry quenching boiler through a special pipeline system to ensure that the steam is not directly discharged into the atmosphere, reducing energy waste and environmental pollution; Step 2: Direct the collected steam into a purification device to remove impurities and particulate matter, ensuring the purity of the steam and providing a high-quality steam source for subsequent use; Step 3: After purification, the steam is pressurized by a pressure pump to increase its pressure level to meet the pressure requirements of subsequent use, and then the pressurized steam is transported to the designated use location through a pipeline; Step 4: Direct the transported steam into a heat recovery device to generate electricity, provide heating, or utilize other heat energy processes using the heat energy of the steam, achieving heat energy recycling of the steam and improving energy utilization efficiency; Step 5: During the entire recycling process, monitoring devices are installed to monitor the flow, temperature, pressure, and other parameters of the steam in real time, and the system is controlled and adjusted according to the monitoring results to ensure stable operation and efficient use of the system. A support table (1) is provided, and a quenching boiler drum (2) is fixedly connected to the middle of the bottom of the support table (1). A material conveying pipeline (3) is fixedly connected to the top of the quenching boiler drum (2) in an annular array. A blowdown expander (4) is fixedly connected to the top of the support table (1) on multiple sides. The ends of multiple material conveying pipelines (3) away from the quenching boiler drum (2) extend to the top of the support table (1) and are fixedly connected to the bottoms of multiple blowdown expanders (4). An exhaust mechanism (6) is fixedly connected to the front side of the top of the support table (1). A steam compressor (5) is fixedly connected to the left and right sides of the front side of the support table (1).

2. The method for recovering and utilizing the exhaust steam of the dry quenching coke oven boiler according to claim 1, and the device for recovering and utilizing the exhaust steam of the dry quenching coke oven boiler is proposed, characterized in that: The exhaust mechanism (6) includes a total exhaust tank (61), and the front side of the total exhaust tank (61) is fixedly connected with an air passage assembly (62).

3. A dry quenching boiler constant discharge steam vent recovery device according to claim 1, characterized in that: The air passage assembly (62) includes two air passage change control assemblies (621), and the outer sides of the two air passage change control assemblies (621) are fixedly connected with connecting frames (623). The rear sides and bottoms of the two connecting frames (623) are fixedly connected to the left and right sides of the front side of the top of the support table (1). The inner sides of the two air passage change control assemblies (621) are provided with air passage pipes (622), and the front sides of the two air passage change control assemblies (621) are fixedly connected with double-pass pipelines (624). The ends of the double-pass pipelines (624) away from the two air passage change control assemblies (621) are fixedly connected to the rear side of the left steam compressor (5), and the left and right sides of the rear end of the double-pass pipelines (624) are fixedly connected to the left and right sides of the front side of the total exhaust tank (61).

4. A dry quenching boiler constant discharge steam vent recovery device according to claim 2, characterized in that: ​ 5. A dry quenching boiler constant discharge steam vent recovery device according to claim 1, characterized in that: Both the air path change control assemblies (621) comprise air tanks (6211), the front sides of the top and bottom of both the air tanks (6211) are slidably connected with baffles (6212), the inner sides of the left and right groups of baffles (6212) extend to the inner walls of the two air tanks (6211), the top of the rear side of the left and right groups of baffles (6212) are fixedly connected with a plurality of springs (6213), one end of the plurality of groups of springs (6213) are fixedly connected to the multiple sides of the top and bottom of the two air tanks (6211), the left and right sides of the rear side of the two air tanks (6211) are fixedly connected with side plates (6214).

6. A dry quenching boiler constant discharge steam vent recovery device according to claim 5, characterized in that: The top and bottom of the outer sides of the left and right groups of side plates (6214) are fixedly connected with racks (6215), the left and right sides of the inner sides of the left and right groups of side plates (6214) are designed as hollow, the inner sides of the left and right groups of side plates (6214) are slidably connected with push-pull plate sliders (6218), the inner sides of the plurality of groups of push-pull plate sliders (6218) are fixedly connected with push-pull plates (6219), the top and bottom inner walls of the middle parts of the left and right groups of push-pull plates (6219) are rotatably connected with columnar horizontal rotating rods (62110), the inner ends of the plurality of groups of columnar horizontal rotating rods (62110) extend to the inner sides of the two groups of push-pull plates (6219) and are fixedly connected with swing rods (62111), the outer ends of the plurality of groups of columnar horizontal rotating rods (62110) extend to the outer sides of the left and right groups of side plates (6214) and are fixedly connected with gears (62115), the outer walls of the plurality of groups of gears (62115) are engaged with the outer walls of the plurality of groups of racks (6215), the outer walls of the plurality of groups of swing rods (62111) are slidably connected with swing rod track guide blocks (62112), the outer sides of the plurality of groups of swing rod track guide blocks (62112) are fixedly connected with track guide block rotating rods (62113), the outer ends of the plurality of groups of track guide block rotating rods (62113) are rotatably connected to the top and bottom of the middle parts of the inner sides of the left and right groups of side plates (6214), the sides away from the columnar horizontal rotating rods (62110) of the plurality of groups of swing rods (62111) are rotatably connected with moving plates (62114), the front sides of the inner sides of the left and right groups of moving plates (62114) are fixedly connected with abutting plates (62123).

7. A dry quenching boiler constant discharge steam vent recovery device according to claim 6, characterized in that: The top and the middle part of the bottom of the left and right groups of side plates (6214) are fixedly connected with rectangular connecting plates (6216), the inner side of the rectangular connecting plates (6216) away from the side plates (6214) is attached to the outer wall of the left and right groups of moving plates (62114), the rear side of the left and right groups of push-pull plates (6219) is fixedly connected with bottom push-pull side plates (62122), the outer side of the left and right groups of bottom push-pull side plates (62122) is fixedly connected with top push-pull horizontal plates (62121), the top of the left and right groups of top push-pull horizontal plates (62121) is fixedly connected with vertical push-pull side plates (62120), the inner side top of the inner side two vertical push-pull side plates (62120) is fixedly connected with convex push-pull plates (62119).

8. A dry quenching boiler constant discharge steam vent recovery device according to claim 7, characterized in that: The inner side of the inner side top of the two rectangular connecting plates (6216) is fixedly connected with connecting side plates (62116), the inner side of the two connecting side plates (62116) is fixedly connected with hydraulic push rod connecting plates (62117), the rear end of the hydraulic push rod connecting plate (62117) is fixedly connected to the front side middle part of the convex push-pull plate (62119).

9. A dry quenching boiler constant discharge steam vent recovery device according to claim 4, characterized in that: The air pipe (622) comprises an air pipe main body (6221), the front end of the air pipe main body (6221) is fixedly connected with an air pipe gas conveying pipe (6222), the end of the air pipe gas conveying pipe (6222) away from the air pipe main body (6221) is fixedly connected to the rear side of the right steam compressor (5), and the rear end of the air pipe main body (6221) is fixedly connected to the middle part of the front side of the total exhaust tank (61).

10. A dry quenching boiler constant discharge steam vent recovery device according to claim 9, characterized in that: The outer wall rear side of the ventilation pipe body (6221) is fixedly connected with a sliding groove disc (6223), an annular array of guide grooves (6227) is opened in the outer wall of the sliding groove disc (6223), the inner wall of the plurality of guide grooves (6227) opened by the sliding groove disc (6223) is slidably connected with a contraction-expansion block (6228), the rear side of the plurality of contraction-expansion blocks (6228) is fixedly connected with a contraction-expansion connecting block (6229), the inner side of the plurality of contraction-expansion connecting blocks (6229) is fixedly connected with a columnar contraction-expansion rod (62210), the inner side of the plurality of columnar contraction-expansion rods (62210) is fixedly connected with a fan-shaped closing block (62211), the side of the outer wall of the ventilation pipe body (6221) aligned with the plurality of fan-shaped closing blocks (62211) is opened with the same through hole, the outer wall of the plurality of fan-shaped closing blocks (62211) is slidably connected in an annular array on the inner wall of the ventilation pipe body (6221), the top of the plurality of contraction-expansion blocks (6228) is rotatably connected with a rotating inclined rod (6226), the side of the plurality of rotating inclined rods (6226) away from the contraction-expansion block (6228) is rotatably connected with a sleeve ring (6224), the inner wall of the sleeve ring (6224) is slidably connected on the outer wall of the ventilation pipe body (6221), the left and right sides of the front side of the sleeve ring (6224) are fixedly connected with an L-shaped push-pull plate (6225), the outer sides of the two L-shaped push-pull plates (6225) are fixedly connected on the inner sides of the two inner side vertical push-pull side plates (62120).

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