Waste steel heat energy recovery structure

Abstract

The utility model relates to the technical field of steelmaking, and discloses a scrap steel heat energy recovery structure which comprises a steel shell outer layer and a processing assembly, the processing assembly is located in the steel shell outer layer and comprises a refractory brick middle layer, and the refractory brick middle layer is fixedly installed at the inner end of the steel shell outer layer. And a slag flowing-in channel is fixedly arranged at the rear end of the interior of the steel shell outer layer, a waste steel layer is fixedly installed at the right end of the steel shell outer layer, and a refractory material pouring layer is fixedly installed at the inner end of the refractory brick middle layer. According to the waste steel heat energy recovery structure, the heat generated by the blast furnace can be stored for a long time by installing the treatment assembly and the heat generated by the blast furnace and matching parts such as a refractory brick middle layer, a waste steel layer and an air blower, and the situation that in the treatment process, the heat is slowly dissipated from a high-temperature slag storage pit, and consequently the waste steel heat energy recovery effect is reduced is avoided; therefore, heat energy utilization of the device is influenced, and the heat energy utilization efficiency of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steelmaking, in particular to a scrap steel heat energy recovery structure. Background Art

[0002] The slag produced by blast furnace smelting flows out from the iron mouth, passes through the main ditch for slag and iron separation, then passes through the slag ditch, and is mixed with slag flushing water to achieve water extraction. The temperature of the liquid blast furnace slag passing through the slag ditch is as high as 1400℃ or even higher. The thermal energy of the slag is enormous.

[0003] At present, most of the high-temperature slag is the by-product water slag formed after water extraction. A large amount of water is consumed in the water extraction process, and a large amount of water vapor is generated and floats in the air and enters the atmospheric circulation. A small number of high-temperature slags adopt the dry slag process. The slag enters the dry slag pit for natural cooling or is sprayed with water for cooling and solidification. The diffusion of heat energy in the air is not well utilized. In the northern regions with lower temperatures, the steam generated in the water slag process of some blast furnaces is recycled for heating, realizing the utilization value of part of the thermal energy of the high-temperature slag. The heat energy caused by the increase in the temperature of the slag flushing water during the water extraction process still cannot be well utilized. In the southern region, there are few cases of collecting and utilizing the steam in the slag flushing process. Most of the steam generated is directly discharged into the atmosphere.

[0004] Under existing technical conditions, the industry has also developed a variety of heat recovery technologies for blast furnace slag heat energy, but the application effects of most technologies are not ideal and the investment is large, so there is no heat energy utilization technology that is suitable for blast furnace sites. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The utility model aims to provide a scrap steel heat energy recovery structure to solve the problem of maximizing the utilization of slag heat energy proposed in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a scrap steel heat energy recovery structure, comprising a steel shell outer layer and a processing component, wherein the processing component is located inside the steel shell outer layer, and the processing component comprises a refractory brick middle layer, wherein the refractory brick middle layer is fixedly installed on the inner end of the steel shell outer layer, a slag inflow channel is fixedly arranged at the rear end of the steel shell outer layer, a scrap steel layer is fixedly installed on the right end of the steel shell outer layer, a refractory material casting layer is fixedly installed on the inner end of the refractory brick middle layer, and a notch is fixedly arranged in the middle of the front end of the steel shell outer layer.

[0009] Preferably, a pipe is fixedly installed inside the groove, and the pipe is connected to the inner part of the outer layer of the steel shell. An air duct is fixedly installed at the rear end of the pipe, and a blower valve is fixedly installed in the middle part of the upper end of the pipe. By installing a recovery component, in use, through the cooperation between the slag channel and other components, the diverted high-temperature slag can pass through the slag channel and flow into the high-temperature slag storage pit, thereby increasing the slag flow rate and reducing adhesion, and preventing the slag from adhering to the inner wall of the slag channel when the high-temperature slag flows to the high-temperature slag storage pit, resulting in a decrease in the slag flow rate and possible blockage in the slag channel, which is beneficial to increasing the slag flow rate.

[0010] Preferably, a blower is fixedly installed at the front end of the pipeline, an air inlet is fixedly provided in the middle of the upper end of the pipeline, and a recovery component is provided behind the outer layer of the steel shell. By installing the processing component, during use, the blower and other components cooperate to allow the air with heat to quickly enter the interior of the steel outer layer, thereby avoiding heat loss in the process of entering the steel outer layer, thereby affecting the heat recovery effect of the device, which is beneficial to improving the efficiency of heat energy utilization.

[0011] Preferably, the recovery component includes a diverter slag channel, which is fixedly connected to the middle of the rear end of the outer layer of the steel shell, the diverter slag channel is fixedly installed inside the slag flow channel, and the rear end of the diverter slag channel is fixedly installed with a blister mud filling area.

[0012] Preferably, a shut-off valve is fixedly installed at the front end of the blister mud filling area, a slag diversion port is fixedly provided at the rear end of the diversion slag channel, and a slag ditch is fixedly connected to the rear end of the diversion slag channel.

[0013] Preferably, the left end of the slag ditch is fixedly connected to a water-slag flushing device, the right end of the slag ditch is fixedly provided with a slag outlet, and the right end of the slag ditch is fixedly connected to a main ditch.

[0014] Preferably, a dragon ditch is fixedly provided in the middle of the front end of the main ditch, a slag skimmer is fixedly installed at the front end inside the main ditch, an iron mouth is fixedly provided at the rear end of the main ditch, and the rear end of the main ditch is fixedly connected to a blast furnace.

[0015] Preferably, a base is fixedly installed at the lower end of the blast furnace, a fixing frame is fixedly installed at the upper end of the base, and a diverter pipe is fixedly connected to the left end of the lower end of the blast furnace. By installing a recovery component, during use, the diverted high-temperature slag can be flowed into the high-temperature slag storage pit through the slag channel through the cooperation between components such as the slag channel, thereby increasing the slag flow rate and reducing adhesion, and preventing the high-temperature slag from adhering to the inner wall of the slag channel when flowing to the high-temperature slag storage pit, resulting in a decrease in the slag flow rate and possible blockage inside the slag channel, which is beneficial to increasing the slag flow rate.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The scrap steel heat recovery structure, by installing the processing components, can preserve the heat generated by the blast furnace for a long time through the cooperation between the refractory brick middle layer, the scrap steel layer and the blower and other components, so as to avoid the heat slowly dissipating from the high-temperature slag storage pit during the processing, resulting in a reduction in the effect of scrap steel heat recovery, thereby affecting the heat energy utilization of the device, which is conducive to improving the efficiency of heat energy utilization of the device;

[0018] 2. The scrap steel heat energy recovery structure, by installing the recovery assembly, can, in use, cooperate with the slag channel and other components to allow the diverted high-temperature slag to flow through the slag channel into the high-temperature slag storage pit, thereby increasing the slag flow rate and reducing adhesion, and preventing the high-temperature slag from adhering to the inner wall of the slag channel when the high-temperature slag flows to the high-temperature slag storage pit, resulting in a decrease in the slag flow rate and possible blockage inside the slag channel, which is conducive to increasing the slag flow rate;

[0019] 3. The scrap steel heat recovery structure, by installing the processing components, during use, through the cooperation between the blower and other components, allows the hot air to quickly enter the interior of the steel outer layer, avoiding the heat loss in the process of entering the steel outer layer, thereby affecting the heat recovery effect of the device, which is beneficial to improving the efficiency of heat energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 It is a partial enlarged structural schematic diagram of the cross section of the processing component of the utility model;

[0022] Figure 3 It is a schematic diagram of the three-dimensional partial structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the partial structure of the recycling component of the utility model;

[0024] Figure 5 This is a three-dimensional partial enlarged structural diagram of the recycling component of the utility model;

[0025] Figure 6 It is a partially enlarged structural schematic diagram of the cross-section of the processing component of the utility model.

[0026] In the figure: 1. steel shell outer layer; 2. processing component; 201. refractory brick middle layer; 202. slag inflow channel; 203. scrap steel layer; 204. refractory material casting layer; 205. notch; 206. pipeline; 207. air duct; 208. blast valve; 209. blower; 210. air inlet; 3. recovery component; 301. slag diversion channel; 302. blister mud filling area; 303. shut-off valve; 304. slag diversion port; 305. slag ditch; 306. slag flushing device; 307. slag mouth; 308. main ditch; 309. dragon ditch; 310. slag skimming; 311. iron mouth; 312. blast furnace; 313. base; 314. fixing frame; 315. diversion pipe. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-Figure 6The utility model provides a technical method: a scrap steel heat energy recovery structure, including a steel shell outer layer 1 and a processing component 2, the processing component 2 is located inside the steel shell outer layer 1, the processing component 2 includes a refractory brick middle layer 201, the refractory brick middle layer 201 is fixedly installed on the inner end of the steel shell outer layer 1, a slag inflow channel 202 is fixedly arranged at the rear end of the steel shell outer layer 1, a scrap steel layer 203 is fixedly installed at the right end of the steel shell outer layer 1, a refractory material casting layer 204 is fixedly installed at the inner end of the refractory brick middle layer 201, a notch 205 is fixedly arranged in the middle of the front end of the steel shell outer layer 1, a pipe 206 is fixedly installed inside the notch 205, the pipe 206 is connected with the inside of the steel shell outer layer 1, an air duct 207 is fixedly installed at the rear end of the pipe 206, a blast valve 208 is fixedly installed in the middle of the upper end of the pipe 206, and a blast valve 208 is fixedly installed at the front end of the pipe 206. The blower 209 is started, and an air inlet 210 is fixedly provided in the middle of the upper end of the pipeline 206. A recovery component 3 is provided at the rear of the steel shell outer layer 1. Then, by starting the blower 209, the air inside the pipeline 206 is quickly extracted from the inside of the steel shell outer layer 1. Since the air pressure inside the steel shell outer layer 1 is lower than the air pressure inside the diversion slag channel 301, the gas containing heat inside the slag ditch 305 flows into the diversion slag channel 301 through the shut-off valve 303, and then flows to the inside of the steel shell outer layer 1 through the diversion slag channel 301. The refractory casting layer 204 can resist the erosion of the steel shell outer layer 1 by heat, and then the scrap steel residue is stored in it through the scrap steel layer 203. The heat enters the pipeline 206 through the air duct 207, and then passes through the start-up blast valve 208 to make the gas with heat move in the direction of the blower 209.

[0029] The recovery component 3 includes a slag diversion channel 301, which is fixedly connected to the middle of the rear end of the steel shell outer layer 1, and the slag flows into the tunnel 202. The interior of the slag diversion channel 301 is fixedly installed, and the rear end of the interior of the slag diversion channel 301 is fixedly installed with a water bubble mud filling area 302, and the front end of the water bubble mud filling area 302 is fixedly installed with a shut-off valve 303. The rear end of the slag diversion channel 301 is fixedly provided with a slag diversion port 304, and the rear end of the slag diversion channel 301 is fixedly connected with a slag groove 305, and the left end of the slag groove 305 is fixedly connected with a water slag flushing device 306, and the right end of the slag groove 305 is fixedly provided with a slag port 307, and the right end of the slag groove 305 is fixedly connected with a main groove 308. A dragon ditch 309 is fixedly provided in the middle of the front end of 308, a slag skimmer 310 is fixedly installed at the front end of the main ditch 308, an iron mouth 311 is fixedly provided at the rear end of the main ditch 308, a blast furnace 312 is fixedly connected to the rear end of the main ditch 308, a base 313 is fixedly installed at the lower end of the blast furnace 312, a fixing frame 314 is fixedly installed at the upper end of the base 313, and a diversion pipe 315 is fixedly connected to the left end of the lower end of the blast furnace 312. When needed, the high-temperature slag produced by the blast furnace 312 flows from the iron mouth 311 into the main ditch 308, and then flows into the slag ditch 305 through the slag mouth 307. When the high-temperature slag passes through the slag diversion port 304, the high-temperature water slag is brought into contact with water through the water slag flushing device 306.

[0030] Working principle: When it is needed, the high-temperature slag produced by the blast furnace 312 flows from the iron mouth 311 into the main groove 308, and then flows into the slag groove 305 through the slag mouth 307. When the high-temperature slag passes through the slag diversion port 304, the high-temperature slag is contacted with water through the water slag flushing device 306, and then the blower 209 is started. The start of the blower 209 causes the air inside the pipe 206 to be quickly drawn out from the inside of the steel shell outer layer 1. Since the internal air pressure of the steel shell outer layer 1 is lower than that of the diversion slag channel 301, the high-temperature slag is discharged from the main groove 308 through the slag diversion port 307. The air pressure inside the slag groove 305 causes the hot gas inside to flow into the diversion slag channel 301 through the shut-off valve 303, and then flows to the inside of the diversion slag channel 301 to the inside of the steel shell outer layer 1, and then passes through the refractory casting layer 204 to resist the erosion of the steel shell outer layer 1 by heat, and then passes through the scrap steel layer 203 to store the scrap steel residue therein, and the heat enters the pipeline 206 through the air duct 207, and then passes through the start-up blast valve 208 to make the hot gas move in the direction of the blower 209.

[0031] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A scrap steel heat recovery structure, comprising a steel shell outer layer (1) and a processing component (2), characterized in that: The processing component (2) is located inside the steel shell outer layer (1), and the processing component (2) comprises a refractory brick middle layer (201), the refractory brick middle layer (201) is fixedly installed at the inner end of the steel shell outer layer (1), a slag inflow channel (202) is fixedly arranged at the rear end inside the steel shell outer layer (1), a scrap steel layer (203) is fixedly installed at the right end of the steel shell outer layer (1), a refractory material casting layer (204) is fixedly installed at the inner end of the refractory brick middle layer (201), and a notch (205) is fixedly arranged in the middle of the front end of the steel shell outer layer (1).

2. The scrap steel heat recovery structure according to claim 1, characterized in that: A pipe (206) is fixedly installed inside the notch (205), and the pipe (206) is connected to the inside of the outer layer (1) of the steel shell. An air duct (207) is fixedly installed at the rear end of the pipe (206), and a blower valve (208) is fixedly installed in the middle of the upper end of the pipe (206).

3. A scrap steel heat recovery structure according to claim 2, characterized in that: A blower (209) is fixedly installed at the front end of the pipeline (206), an air inlet (210) is fixedly arranged in the middle of the upper end of the pipeline (206), and a recovery component (3) is arranged behind the outer layer (1) of the steel shell.

4. The scrap steel heat recovery structure according to claim 3, characterized in that: The recovery component (3) comprises a slag diversion channel (301), the slag diversion channel (301) is fixedly connected to the middle part of the rear end of the steel shell outer layer (1), the slag inflow channel (202) is fixedly installed with the slag diversion channel (301) inside, and the rear end of the inside of the slag diversion channel (301) is fixedly installed with a blister mud filling area (302).

5. The scrap steel heat recovery structure according to claim 4, characterized in that: A shutoff valve (303) is fixedly installed at the front end of the blister mud filling area (302), a slag diversion port (304) is fixedly provided at the rear end of the diversion slag channel (301), and a slag ditch (305) is fixedly connected to the rear end of the diversion slag channel (301).

6. The scrap steel heat recovery structure according to claim 5, characterized in that: The left end of the slag ditch (305) is fixedly connected to a water-slag flushing device (306), the right end of the slag ditch (305) is fixedly provided with a slag opening (307), and the right end of the slag ditch (305) is fixedly connected to a main ditch (308).

7. The scrap steel heat recovery structure according to claim 6, characterized in that: A dragon groove (309) is fixedly arranged in the middle of the front end of the main groove (308), a slag skimmer (310) is fixedly installed at the front end inside the main groove (308), an iron mouth (311) is fixedly arranged at the rear end of the main groove (308), and the rear end of the main groove (308) is fixedly connected to a blast furnace (312).

8. The scrap steel heat recovery structure according to claim 7, characterized in that: A base (313) is fixedly installed at the lower end of the blast furnace (312), a fixing frame (314) is fixedly installed at the upper end of the base (313), and a shunt pipe (315) is fixedly connected to the left end of the lower end of the blast furnace (312).

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