Waste gas treatment device for metallurgical equipment

Abstract

The invention discloses a waste gas treatment device for metallurgical equipment, and relates to the technical field of waste gas treatment devices.The waste gas treatment device comprises a base plate used for bearing waste gas treatment equipment; the waste gas purification box is fixedly mounted at the top of the base plate; the waste gas purification assembly is arranged in the waste gas purification box and is used for purifying the waste gas; the waste gas dust removal box is fixedly installed at the top of the base plate, and a dust removal assembly used for removing dust in waste gas is arranged in the waste gas dust removal box; the water supply tank is fixedly installed at the top of the base plate, and the water supply tank is connected with a water supply assembly used for injecting cooling water into the waste gas dust removal box. The waste gas dust removal effect can be achieved, the content of dust in waste gas is reduced, agent loss during follow-up agent spraying purification is reduced, the actual effect of agents can be fully exerted, and the service life of the agents is prolonged. And the operation cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment devices, and in particular to a waste gas treatment device for metallurgical equipment. Background Art

[0002] Metallurgy is the process and technology of extracting metals or metal compounds from ores and using various processing methods to make metal materials with certain properties. Metallurgical technologies mainly include pyrometallurgy, hydrometallurgy and electrometallurgy. At the same time, metallurgy has a long history of development in my country, from the Stone Age to the subsequent Bronze Age, and then to the large-scale development of modern steel smelting. The metallurgical equipment manufacturing industry is a capital, technology and labor-intensive industry. Most of the products are single-piece small-batch manufacturing, with a long manufacturing cycle and a large amount of capital occupied, which has formed a pattern dominated by large enterprises in the metallurgical equipment manufacturing industry.

[0003] During the production process, a lot of waste gas will be generated in the metallurgical furnace. If these waste gases are directly discharged into the air, they will pollute the environment. In addition, the waste gas carries a large amount of heat, which can be reasonably utilized to save resources.

[0004] The existing patent (Announcement No.: CN212320435U) proposes a waste gas treatment device for metallurgical equipment, including a bottom plate, a support leg fixedly installed on the upper surface of the bottom plate, and a metallurgical furnace fixedly installed on the top of the support leg. The waste gas treatment device for metallurgical equipment, through the coordinated use of a heat recovery box, a cold water inlet pipe, a first gas pipeline, a loop pipe, a first water pump and a hot water outlet pipe, allows the cold water entering from the cold water inlet pipe to exchange heat with the waste gas inside the loop pipe, so that the water temperature is increased, and is provided for people to use, and the heat resources in the waste gas are reasonably utilized, which is energy-saving and environmentally friendly. Through the coordinated use of a second gas pipeline, an outlet pipeline, a second water pump, a circulation pipeline, a water spray pipe and a spray head, the waste gas enters the interior of the waste gas treatment box, and can be sprayed to treat pollutants in the waste gas. Through the coordination of the smoke exhaust pipe and the activated carbon layer, the pollution to the environment is reduced.

[0005] The existing patent (publication number: CN212701320U) proposes a waste gas treatment device for metallurgical equipment, including a primary treatment box, a secondary treatment box is arranged on the right side of the primary treatment box, a sealing cover is fixedly installed on the upper side of the primary treatment box, an induced draft fan is fixedly installed on the left side of the primary treatment box, a first air duct is fixedly installed on one side of the induced draft fan, and a second air duct is fixedly installed on the other end of the induced draft fan. A pad is fixedly installed inside the primary treatment box, and a filtering device is arranged inside the primary treatment box, wherein the filter screen in the filtering device can remove fine particles such as dust in the waste gas, and then the harmful gas in the waste gas is neutralized and removed by the treatment liquid in the secondary treatment box, wherein the motor drives the rotating shaft to rotate, and the rotating shaft drives the fan blades to rotate, and the through holes opened on the surface of the fan blades are used to break up the introduced gas into smaller bubbles, thereby increasing the contact area between the harmful gas and the treatment liquid, and improving the removal efficiency of the harmful gas.

[0006] The above-mentioned waste gas treatment device has the following disadvantages when in use: the dust in the waste gas cannot be treated well during waste gas treatment, and the waste gas containing dust will cause excessive loss of reagents during the subsequent application of reagent spray purification, and the actual efficacy of the reagents will be insufficient, resulting in increased operating costs. For this reason, we propose a waste gas treatment device for metallurgical equipment to solve the above problems. Summary of the invention

[0007] The present invention provides a waste gas treatment device for metallurgical equipment, which solves the technical problems that dust in the waste gas cannot be treated well during waste gas treatment, waste gas with dust causes excessive loss of reagents during subsequent purification by reagent spraying, and the actual efficacy of the reagents is insufficient, resulting in increased operating costs.

[0008] In order to solve the above technical problems, the present invention provides a waste gas treatment device for metallurgical equipment, comprising:

[0009] A base plate for carrying the exhaust gas treatment equipment;

[0010] The exhaust gas purification box is fixedly installed on the top of the base plate;

[0011] An exhaust gas purification component is arranged inside the exhaust gas purification box and is used to purify the exhaust gas;

[0012] It also includes: an exhaust gas dust removal box fixedly mounted on the top of the base plate, wherein a dust removal assembly for removing dust in the exhaust gas is arranged inside the exhaust gas dust removal box;

[0013] A water supply box is fixedly mounted on the top of the base plate, and a water supply assembly is connected to the water supply box for injecting cooling water into the exhaust gas dust removal box.

[0014] Preferably, the exhaust gas purification component includes a first mesh plate, a second mesh plate, a filter material inlet, a spray main pipe, a spray branch pipe, a water pump, a drug delivery pipe, a drug extraction pipe and a connecting air pipe. The first mesh plate and the second mesh plate are fixedly installed in the exhaust gas purification box at intervals. The filter material inlet is opened through the side wall of the exhaust gas purification box. The spray main pipe is fixedly installed at the bottom end of the first mesh plate. The spray branch pipes are arranged in a circular array at the bottom end of the spray main pipe. The water pump is fixedly installed on the side wall of the spray main pipe. The drug delivery pipe and the drug extraction pipe are both fixedly connected to the water pump. The end of the drug delivery pipe away from the water pump is fixedly connected to the spray main pipe. The end of the drug extraction pipe away from the water pump extends to the interior of the exhaust gas purification box. The connecting air pipe is fixedly installed on the lower side wall of the exhaust gas purification box.

[0015] Preferably, one end of the connecting air pipe extending to the interior of the exhaust gas purification box is fixedly connected to a gas distribution tube, and the gas distribution tube is provided with a plurality of diversion grooves communicating with its inner cavity.

[0016] Preferably, the water supply assembly includes a mounting seat, a piston cylinder, a piston plate, a water diversion pipe, a first one-way valve, a first water supply pipe, a second one-way valve, a second water supply pipe and a third one-way valve; the mounting seat is fixedly mounted on the top surface of the base plate, the piston cylinder is fixedly mounted on the mounting seat, the piston plate is slidably arranged inside the piston cylinder, the water diversion pipe is fixedly mounted on the top wall of the piston cylinder, the top end of the water diversion pipe is fixedly connected to a water supply tank, the first one-way valve is fixedly mounted on the water diversion pipe, the first water supply pipe is fixedly mounted on the outer wall on one side of the piston cylinder, the second one-way valve is fixedly mounted on the first water supply pipe, the second water supply pipe is fixedly mounted on the outer wall on the other side of the piston cylinder, and the third one-way valve is fixedly mounted on the second water supply pipe.

[0017] Preferably, the dust removal assembly includes an exhaust gas inlet, an exhaust gas filter pipe, an air intake pipe, an exhaust gas filter screen, a first baffle, a second baffle, an exhaust outlet, an exhaust gas delivery pipe and an air opening, the exhaust gas inlet is opened on the left side wall of the exhaust gas dust removal box, the exhaust gas filter pipe is fixedly installed on the outside of the exhaust gas inlet, the air intake pipe is fixedly installed on the left side wall of the exhaust gas filter pipe, the exhaust gas filter screen is slidably plugged into the inside of the exhaust gas filter pipe, the first baffle is fixedly installed on the inner bottom wall of the exhaust gas dust removal box, the first baffle is connected to the exhaust gas dust removal box, and the exhaust gas filter screen is connected to the exhaust gas dust removal box. There is a gap between the inner top walls of the exhaust gas dust removal box, the second baffle is fixedly installed on the inner top wall of the exhaust gas dust removal box, the second baffle is an "L"-shaped plate, the side of the second baffle away from the inner top wall of the exhaust gas dust removal box is fixedly connected to the inner side wall of the exhaust gas dust removal box, the air outlet is arranged on the inner top wall of the exhaust gas dust removal box, the exhaust gas conveying pipe is fixedly installed at the port of the air outlet, the end of the exhaust gas conveying pipe away from the air outlet is fixedly connected to the outer end of the connecting air pipe, and the air opening is opened through the cross surface of the second baffle.

[0018] Preferably, the dust removal assembly also includes a steam generating pipe, a sliding plate, a piston rod and a return spring, the steam generating pipe being fixedly mounted on the inner wall of the exhaust gas dust removal box, the steam generating pipe being located on the left side of the first baffle, one end of the steam generating pipe extending to the outside of the exhaust gas dust removal box and being fixedly connected with the first water pipe, an end away from the piston cylinder, the sliding plate being slidably arranged inside the exhaust gas dust removal box, the top wall of the sliding plate being fitted with the bottom surface of the second baffle, the remaining outer peripheral wall of the second baffle being fitted with the inner peripheral wall of the exhaust gas dust removal box, the piston rod being slidably arranged on the right side wall of the exhaust gas dust removal box, the return spring being sleeved on the outside of the piston rod, one end of the return spring being fixedly connected to the side wall of the sliding plate, and the other end of the return spring being fixedly connected to the right inner wall of the exhaust gas dust removal box.

[0019] Preferably, the interior of the exhaust gas dust collection box is also provided with a waste heat recovery component for recovering heat in the high-temperature exhaust gas, the waste heat recovery component includes a water inlet pipe, a heat exchange pipe, a water outlet pipe, a drain pipe and a first water supply pipe, the water inlet pipe is fixedly installed on the inner wall of the exhaust gas dust collection box, and the water inlet pipe is provided with a plurality of them, the water outlet pipe is fixedly installed on the inner wall of the exhaust gas dust collection box, the water outlet pipe and the water inlet pipe are arranged opposite to each other, and the number of the water outlet pipe and the water inlet pipe is the same, a plurality of heat exchange pipes are fixedly connected between the water inlet pipe and the water outlet pipe, the water inlet pipe, the heat exchange pipe and the water outlet pipe are all arranged between the second baffle and the inner top wall of the exhaust gas dust collection box, the end of the water inlet pipe extending to the outside of the exhaust gas dust collection box is fixedly connected to the first water supply pipe, the end of the water outlet pipe extending to the outside of the exhaust gas dust collection box is fixedly connected to the drain pipe, and the end of the first water supply pipe away from the water inlet pipe is fixedly connected to the end of the second water supply pipe away from the piston cylinder.

[0020] Preferably, the interior of the exhaust gas dust removal box is also provided with a sewage discharge component for discharging sewage generated during the dust reduction process, and the sewage discharge component includes a wastewater storage chamber, a water inlet, a sealing plug, a slide, a slide rod, a tension spring, an annular ring, a contact sensor, a sewage pipe and a solenoid valve. The wastewater storage chamber is opened on the inner bottom wall of the exhaust gas dust removal box, and the water inlet is opened on the bottom wall of the exhaust gas dust removal box. The wastewater storage chamber is connected with the inner cavity of the exhaust gas dust removal box through the water inlet, and the slide is opened on the inner bottom wall of the wastewater storage chamber. The slide rod is slidably arranged inside the slide rod, and the tension spring is sleeved on the outside of the slide rod. The sealing plug is fixedly mounted on the top of the sliding rod, and the sealing plug is connected to the inside of the water inlet, the bottom end of the tension spring is fixedly connected to the inner bottom wall of the slide groove, the top of the tension spring is fixedly connected to the bottom surface of the sealing plug, the annular ring is fixedly mounted on the outer peripheral wall of the lower part of the sealing plug, the contact sensor is fixedly mounted on the inner top wall of the wastewater storage chamber, and there is a distance between the annular ring and the contact sensor, the drain pipe is fixedly mounted on the outer wall of the exhaust dust removal box, and the drain pipe is connected to the wastewater storage chamber, the solenoid valve is fixedly mounted on the drain pipe, and the solenoid valve is electrically connected to the contact sensor.

[0021] Preferably, the steam generating pipe includes a water storage pipe and a steam spray pipe, the water storage pipe is fixedly connected to the inner wall of the exhaust gas dust removal box, there are multiple steam spray pipes, and the multiple steam spray pipes are fixedly installed on the water storage pipe at equal intervals, each of the steam spray pipes is provided with multiple steam spray holes, and the multiple steam spray holes are distributed in a circular array on the steam spray pipe.

[0022] Preferably, a plurality of heat absorbing plates are fixedly installed at equal distances on the outer wall of the water storage pipe, the heat absorbing plates are arranged at the lower part of the steam injection hole, and the material of the heat absorbing plates is aluminum.

[0023] Compared with the related art, the waste gas treatment device for metallurgical equipment provided by the present invention has the following beneficial effects:

[0024] In the present invention, the cold water transported to the steam generating pipe through the first water delivery pipe can heat the water in the water storage pipe to boil by the waste heat of the high-temperature waste entering the exhaust gas dust removal box, and the boiled water generates pressurized steam, and water vapor with a certain pressure is sprayed out from the steam spray pipe and the steam spray hole. The water vapor is liquefied into small water droplets, which can directly combine with the dust particles in the metallurgical waste gas to achieve a spraying effect, so that the water vapor and the dust particles in the metallurgical waste gas form a combination and fall down, which can greatly eliminate the dust particles in the metallurgical waste gas, and will not generate much waste water, and there is no need to add an additional heat source, which is energy-saving and environmentally friendly.

[0025] In the present invention, the pressure change when the exhaust gas enters the exhaust dust removal box is utilized to realize the reciprocating sliding of the sliding plate to the left and right, and at the same time, the sliding plate can drive the piston rod and the piston plate to move synchronously. During the reciprocating movement of the piston plate in the piston cylinder, the cooling water stored in the water supply tank can be pumped out through the water guide pipe, and a part of the water in the piston cylinder can be transported to the steam generating pipe through the first water guide pipe, and a part of the water in the piston cylinder can be transported to the first water supply pipe through the second water guide pipe. The water transported to the first water supply pipe can enter the inside of the water inlet pipe, and the water in the water in the water inlet pipe can flow through the heat exchange pipe and be collected in the water outlet pipe, and then be discharged from the drain pipe. The water entering the inside of the water inlet pipe is cold water. When the exhaust gas enters the space on the upper part of the second baffle through the air opening, the high-temperature exhaust gas can exchange heat with the water in the heat exchange pipe to achieve the effect of heating the water. The heated high-temperature water enters the water outlet pipe and is then discharged from the drain pipe, thereby achieving the effect of recovering the waste heat of the high-temperature exhaust gas.

[0026] In the present invention, the filter material inlet is used to facilitate filling the filter material onto the first mesh plate and the second mesh plate, and then the harmful gas in the exhaust gas can be filtered and purified through the filter material. The medicine liquid at the bottom of the exhaust gas purification box can be extracted through the cooperation of the spray main pipe, the spray branch pipe, the water pump, the medicine delivery pipe and the medicine extraction pipe. The exhaust gas entering the exhaust gas purification box can be sprayed and purified by spraying the medicine liquid. The exhaust gas entering the exhaust gas purification box is fully mixed and purified with the exhaust gas purification medicine liquid injected at the bottom of the exhaust gas purification box through the cooperation of the gas distribution cylinder, the diversion trough and the connecting air pipe. The exhaust gas after purification can be discharged through the filter material inlet, ensuring that the medicine liquid entering the exhaust gas purification box can be fully purified. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of a waste gas treatment device for metallurgical equipment;

[0028] Figure 2 It is a three-dimensional structural schematic diagram of a waste gas treatment device for metallurgical equipment;

[0029] Figure 3 It is a three-dimensional structural schematic diagram of a waste gas treatment device for metallurgical equipment;

[0030] Figure 4 It is a three-dimensional structural schematic diagram of a waste gas treatment device for metallurgical equipment;

[0031] Figure 5 It is a schematic diagram of the cross-sectional structure of a waste gas treatment device for metallurgical equipment;

[0032] Figure 6 It is a schematic diagram of the structure of a steam generating tube in a waste gas treatment device for metallurgical equipment;

[0033] Figure 7It is a structural schematic diagram of an exhaust gas purification box in an exhaust gas treatment device for metallurgical equipment;

[0034] Figure 8 It is a schematic diagram of the cross-sectional structure of an exhaust gas purification box in an exhaust gas treatment device for metallurgical equipment;

[0035] Fig. 9 This is a schematic diagram of the structure of a gas distribution tube in a waste gas treatment device for metallurgical equipment;

[0036] Fig.10 for Figure 5 A magnified view of the structure at center.

[0037] Numbers in the figure: 1, substrate; 2, exhaust gas dust removal box; 201, exhaust gas inlet; 202, exhaust gas filter pipe; 203, air inlet pipe; 204, exhaust gas filter; 205, first baffle; 206, second baffle; 207, steam generating pipe; 208, water inlet pipe; 209, heat exchange pipe; 210, water outlet pipe; 211, air outlet; 212, exhaust gas conveying pipe; 213, drain pipe; 214, first water supply pipe; 215, sliding plate; 216, piston rod; 217, return spring; 218, wastewater storage chamber; 219, water inlet; 220, sealing plug; 221, slide groove; 222, slide rod; 223, tension spring; 224, annular ring; 225, contact sensor; 226, sewage pipe; 227, solenoid valve; 228, air opening; 2071, water storage pipe; 2072, steam injection pipe; 2073, heat absorption plate; 2074, steam injection hole; 3, water supply tank; 301, mounting seat; 302, piston cylinder; 303, piston plate; 304, water diversion pipe; 305, first non-return valve; 306, first water delivery pipe; 307, second non-return valve; 308, second water delivery pipe; 309, third non-return valve; 4, exhaust gas purification box; 401, first mesh plate; 402, second mesh plate; 403, filter material inlet; 404, spray main pipe; 405, spray branch pipe; 406, water pump; 407, drug delivery pipe; 408, drug extraction pipe; 409, gas distribution tube; 410, diversion trough; 411, connecting air pipe. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are involved, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Depend on Figure 1-10 A waste gas treatment device for metallurgical equipment is provided, comprising a base plate 1 for carrying the waste gas treatment equipment; a waste gas purification box 4 fixedly mounted on the top of the base plate 1; a waste gas purification component arranged inside the waste gas purification box 4 for purifying the waste gas; and also comprising: a waste gas dust removal box 2 fixedly mounted on the top of the base plate 1, a dust removal component for removing dust from the waste gas being arranged inside the waste gas dust removal box 2; a water supply box 3 fixedly mounted on the top of the base plate 1, a water supply component for injecting cooling water into the waste gas dust removal box 2 being connected to the water supply box 3.

[0042] The exhaust gas purification component includes a first mesh plate 401, a second mesh plate 402, a filter material inlet 403, a spray main pipe 404, a spray branch pipe 405, a water pump 406, a drug delivery pipe 407, a drug extraction pipe 408 and a connecting air pipe 411. The first mesh plate 401 and the second mesh plate 402 are fixedly installed in the exhaust gas purification box 4 at intervals, the filter material inlet 403 is opened on the side wall of the exhaust gas purification box 4, the spray main pipe 404 is fixedly installed at the bottom of the first mesh plate 401, and the spray branch pipe 405 is arranged at the bottom of the spray main pipe 404 in a circumferential array. The water pump 40 6 is fixedly installed on the side wall of the spray main pipe 404, the drug delivery pipe 407 and the drug extraction pipe 408 are both fixedly connected to the water pump 406, the end of the drug delivery pipe 407 away from the water pump 406 is fixedly connected to the spray main pipe 404, the end of the drug extraction pipe 408 away from the water pump 406 extends to the inside of the exhaust gas purification box 4, the connecting air pipe 411 is fixedly installed on the lower side wall of the exhaust gas purification box 4, and the end of the connecting air pipe 411 extending to the inside of the exhaust gas purification box 4 is fixedly connected to the gas distribution tube 409, and the gas distribution tube 409 is provided with a plurality of diversion grooves 410 connected to its inner cavity;

[0043] During specific implementation, the filter material inlet 403 is used to facilitate filling the filter material onto the first mesh plate 401 and the second mesh plate 402, and then the harmful gas in the exhaust gas can be filtered and purified through the filter material. The cooperation of the spray main pipe 404, the spray branch pipe 405, the water pump 406, the drug delivery pipe 407 and the drug extraction pipe 408 can extract the medicine liquid at the bottom of the exhaust gas purification box 4, and the exhaust gas entering the exhaust gas purification box 4 can be sprayed and purified by spraying the medicine liquid. The cooperation of the gas distribution tube 409, the diversion groove 410 and the connecting air pipe 411 can make the exhaust gas entering the exhaust gas purification box 4 and the exhaust gas purification medicine liquid injected into the bottom of the exhaust gas purification box 4 be fully mixed and purified. The exhaust gas after purification can be discharged through the filter material inlet 403, ensuring that the medicine liquid entering the exhaust gas purification box 4 can be fully purified.

[0044] The water supply assembly includes a mounting seat 301, a piston cylinder 302, a piston plate 303, a water diversion pipe 304, a first one-way valve 305, a first water delivery pipe 306, a second one-way valve 307, a second water delivery pipe 308 and a third one-way valve 309. The mounting seat 301 is fixedly mounted on the top surface of the substrate 1, the piston cylinder 302 is fixedly mounted on the mounting seat 301, the piston plate 303 is slidably arranged inside the piston cylinder 302, the water diversion pipe 304 is fixedly mounted on the top wall of the piston cylinder 302, the top of the water diversion pipe 304 is fixedly connected to the water supply tank 3, the first one-way valve 305 is fixedly mounted on the water diversion pipe 304, the first water delivery pipe 306 is fixedly mounted on the outer wall on one side of the piston cylinder 302, the second one-way valve 307 is fixedly mounted on the first water delivery pipe 306, the second water delivery pipe 308 is fixedly mounted on the outer wall on the other side of the piston cylinder 302, and the third one-way valve 309 is fixedly mounted on the second water delivery pipe 308.

[0045] The dust removal assembly includes an exhaust gas inlet 201, an exhaust gas filter tube 202, an air intake pipe 203, an exhaust gas filter screen 204, a first baffle 205, a second baffle 206, an exhaust outlet 211, an exhaust gas delivery pipe 212 and an air opening 228. The exhaust gas inlet 201 is opened on the left side wall of the exhaust gas dust removal box 2, the exhaust gas filter tube 202 is fixedly installed on the outside of the exhaust gas inlet 201, the air intake pipe 203 is fixedly installed on the left side wall of the exhaust gas filter tube 202, the exhaust gas filter screen 204 is slidably plugged into the inside of the exhaust gas filter tube 202, the first baffle 205 is fixedly installed on the inner bottom wall of the exhaust gas dust removal box 2, and the first There is a gap between the baffle 205 and the inner top wall of the exhaust dust collection box 2. The second baffle 206 is fixedly installed on the inner top wall of the exhaust dust collection box 2. The second baffle 206 is an "L"-shaped plate. The side of the second baffle 206 away from the inner top wall of the exhaust dust collection box 2 is fixedly connected to the inner wall of the exhaust dust collection box 2. The air outlet 211 is arranged on the inner top wall of the exhaust dust collection box 2. The exhaust gas conveying pipe 212 is fixedly installed at the port of the air outlet 211. The end of the exhaust gas conveying pipe 212 away from the air outlet 211 is fixedly connected to the outer end of the connecting air pipe 411, and the air opening 228 is opened through the horizontal surface of the second baffle 206.

[0046] The dust removal assembly also includes a steam generating pipe 207, a sliding plate 215, a piston rod 216 and a return spring 217. The steam generating pipe 207 is fixedly installed on the inner wall of the exhaust dust removal box 2. The steam generating pipe 207 is located on the left side of the first baffle plate 205. One end of the steam generating pipe 207 extends to the outside of the exhaust dust removal box 2 and is fixedly connected to the first water pipe 306, and the end away from the piston cylinder 302. The sliding plate 215 is slidably arranged inside the exhaust dust removal box 2, the top wall of the sliding plate 215 is in contact with the bottom surface of the second baffle plate 206, and the remaining outer peripheral wall of the second baffle plate 206 is in contact with the inner peripheral wall of the exhaust dust removal box 2. The piston rod 216 is slidably arranged on the right side wall of the exhaust dust removal box 2, and the return spring 217 is sleeved on the outside of the piston rod 216. One end of the return spring 217 is fixedly connected to the side wall of the sliding plate 215, and the other end of the return spring 217 is fixedly connected to the right inner wall of the exhaust dust removal box 2.

[0047] The exhaust gas dust removal box 2 is also provided with a waste heat recovery component for recovering heat from the high-temperature exhaust gas. The waste heat recovery component includes an inlet pipe 208, a heat exchange pipe 209, a water outlet pipe 210, a drain pipe 213 and a first water supply pipe 214. The inlet pipe 208 is fixedly installed on the inner wall of the exhaust gas dust removal box 2, and a plurality of inlet pipes 208 are provided. The outlet pipe 210 is fixedly installed on the inner wall of the exhaust gas dust removal box 2. The outlet pipe 210 is arranged opposite to the inlet pipe 208, and the number of the outlet pipe 210 and the inlet pipe 208 is the same. The inlet pipe 2 A plurality of heat exchange pipes 209 are fixedly connected between the water inlet pipe 208 and the water outlet pipe 210. The water inlet pipe 208, the heat exchange pipe 209 and the water outlet pipe 210 are all arranged between the second baffle 206 and the inner top wall of the exhaust gas dust removal box 2. The end of the water inlet pipe 208 extending to the outside of the exhaust gas dust removal box 2 is fixedly connected to the first water supply pipe 214, and the end of the water outlet pipe 210 extending to the outside of the exhaust gas dust removal box 2 is fixedly connected to the drain pipe 213. The end of the first water supply pipe 214 away from the water inlet pipe 208 is fixedly connected to the end of the second water pipe 308 away from the piston cylinder 302.

[0048] The interior of the exhaust dust removal box 2 is also provided with a sewage discharge component for discharging sewage generated during the dust reduction process, and the sewage discharge component includes a wastewater storage chamber 218, a water inlet 219, a sealing plug 220, a slide 221, a slide rod 222, a tension spring 223, an annular ring 224, a contact sensor 225, a sewage pipe 226 and a solenoid valve 227. The wastewater storage chamber 218 is provided on the inner bottom wall of the exhaust dust removal box 2, the water inlet 219 is provided on the bottom wall of the exhaust dust removal box 2, the wastewater storage chamber 218 is connected with the inner cavity of the exhaust dust removal box 2 through the water inlet 219, the slide 221 is provided on the inner bottom wall of the wastewater storage chamber 218, the slide rod 222 is slidably provided inside the slide 221, and the tension spring 223 is sleeved on the outside of the slide rod 222. The sealing plug 220 is fixedly mounted on the top of the sliding rod 222, and the sealing plug 220 is plugged into the inside of the water inlet 219, the bottom end of the tension spring 223 is fixedly connected to the inner bottom wall of the slide groove 221, the top of the tension spring 223 is fixedly connected to the bottom surface of the sealing plug 220, the annular ring 224 is fixedly mounted on the outer peripheral wall of the lower part of the sealing plug 220, the contact sensor 225 is fixedly mounted on the inner top wall of the wastewater storage chamber 218, and there is a gap between the annular ring 224 and the contact sensor 225, the drain pipe 226 is fixedly mounted on the outer wall of the exhaust dust removal box 2, and the drain pipe 226 is connected to the wastewater storage chamber 218, the solenoid valve 227 is fixedly mounted on the drain pipe 226, and the solenoid valve 227 is electrically connected to the contact sensor 225.

[0049] The steam generating pipe 207 includes a water storage pipe 2071 and a steam injection pipe 2072. The water storage pipe 2071 is fixedly connected to the inner wall of the exhaust gas dust removal box 2. There are multiple steam injection pipes 2072, which are fixedly installed on the water storage pipe 2071 at equal intervals. Each steam injection pipe 2072 is provided with multiple steam injection holes 2074, which are distributed in a circular array on the steam injection pipe 2072.

[0050] In specific implementation, it utilizes the waste heat of metallurgical waste gas to heat the water in the water storage pipe 2071 to boil, and sprays it out from the steam spray hole 2074. The water vapor with a certain pressure is liquefied into small water droplets, which can directly combine with the dust particles in the metallurgical waste gas to achieve a spraying effect. The water vapor and the dust particles in the metallurgical waste gas form a combination and fall down, which can greatly eliminate the dust particles in the metallurgical waste gas without generating much waste water and without adding additional heat sources, thus saving energy and being environmentally friendly.

[0051] A plurality of heat absorbing plates 2073 are fixedly installed at equal distances on the outer wall of the water storage pipe 2071. The heat absorbing plates 2073 are arranged at the lower part of the steam injection hole 2074. The heat absorbing plates 2073 are made of aluminum.

[0052] In a specific implementation, the high-temperature exhaust gas entering the exhaust dust removal box 2 can contact the heat absorbing plate 2073. After contacting the exhaust gas, the heat absorbing plate 2073 absorbs part of the heat in the exhaust gas and transfers the heat to the water storage pipe 2071, so that the water entering the water storage pipe 2071 can be quickly heated and evaporated.

[0053] Working principle:

[0054] The metallurgical waste gas enters the waste gas filter tube 202 through the air inlet 203. The waste gas filter 204 arranged inside the waste gas filter tube 202 can achieve the effect of filtering and removing dust from the waste gas. The waste gas filtered by the waste gas filter 204 enters the waste gas dust removal box 2 through the waste gas inlet 201. As the waste gas entering the waste gas dust removal box 2 increases, the internal pressure of the waste gas dust removal box 2 increases, and the waste gas can push the sliding plate 215 to slide to the right. The sliding plate 215 is compressed during the sliding process. When the sliding plate 215 slides, the return spring 217 is compressed. When the moving path of plate 215 passes over the air opening 228, the exhaust gas enters the space above the second baffle 206 through the air opening 228, and is then discharged into the exhaust gas conveying pipe 212 through the water outlet pipe 210. The exhaust gas enters the exhaust gas purification box 4 under the conveyance of the exhaust gas conveying pipe 212. As the exhaust gas is discharged, the air pressure in the exhaust gas dust removal box 2 decreases, and the sliding plate 215 can be reset under the push of the reset spring 217, so that the sliding plate 215 can slide back and forth left and right by utilizing the pressure change when the exhaust gas enters the exhaust gas dust removal box 2.

[0055] The filter material inlet 403 facilitates filling filter material onto the first mesh plate 401 and the second mesh plate 402, and then the harmful gas in the exhaust gas can be filtered and purified through the filter material. The cooperation of the spray main pipe 404, the spray branch pipe 405, the water pump 406, the drug delivery pipe 407 and the drug extraction pipe 408 can extract the medicine liquid at the bottom of the exhaust gas purification box 4, and the exhaust gas entering the exhaust gas purification box 4 can be sprayed and purified by spraying the medicine liquid. The cooperation of the gas distribution tube 409, the diversion groove 410 and the connecting air pipe 411 can make the exhaust gas entering the exhaust gas purification box 4 and the exhaust gas purification medicine liquid injected into the bottom of the exhaust gas purification box 4 be fully mixed and purified. The exhaust gas after purification can be discharged through the filter material inlet 403, ensuring that the medicine liquid entering the exhaust gas purification box 4 can be fully purified.

[0056] The sliding plate 215 is slid back and forth by utilizing the pressure change when the exhaust gas enters the exhaust dust removal box 2. At the same time, the sliding plate 215 can drive the piston rod 216 and the piston plate 303 to move synchronously. During the reciprocating movement of the piston plate 303 in the piston cylinder 302, the cooling water stored in the water supply box 3 can be pumped out through the water guide pipe 304, and a part of the water in the piston cylinder 302 can be transported to the steam generating pipe 207 through the first water delivery pipe 306, and a part of the water in the piston cylinder 302 can be transported to the first water supply pipe 214 through the second water delivery pipe 308. The water transported to the first water supply pipe 214 can enter the water inlet pipe 208, and the water in the water inlet pipe 208 can flow through the heat exchange pipe 209 and collect in the water outlet pipe 210, and then be discharged from the drain pipe 213. The water entering the water inlet pipe 208 is cold water. When the exhaust gas enters the space above the second baffle 206 through the air opening 228, the high-temperature exhaust gas can exchange heat with the water in the heat exchange pipe 209 to achieve the effect of heating the water. The heated high-temperature water enters the water outlet pipe 210 and is then discharged from the drain pipe 213, achieving the effect of recovering the waste heat of the high-temperature exhaust gas.

[0057] The cold water transported to the steam generating pipe 207 through the first water delivery pipe 306 can heat the water in the water storage pipe 2071 to boil by the waste heat of the high-temperature waste entering the exhaust gas dust removal box 2, and the heated boiling water generates steam with pressure, and water vapor with a certain pressure is sprayed out from the steam spray pipe 2072 and the steam spray hole 2074. The water vapor is liquefied into small water droplets, which can directly combine with the dust particles in the metallurgical waste gas to achieve a spraying effect, so that the water vapor and the dust particles in the metallurgical waste gas form a combination and fall down, which can greatly eliminate the dust particles in the metallurgical waste gas, and will not generate a lot of waste water, and no additional heat source needs to be added, which is energy-saving and environmentally friendly;

[0058] The wastewater generated during the spraying and dust reduction process can fall into the exhaust gas dust removal box 2. Under the pressure of the exhaust gas entering the exhaust gas dust removal box 2, the sealing plug 220 can be pushed to move downward. At this time, the water inlet 219 is in an open state, so that the wastewater generated during the spraying and dust reduction process can fall from the water inlet 219 into the wastewater storage chamber 218. As the amount of wastewater increases, the buoyancy of water can be used to push the sealing plug 220 to move upward, so that the sealing plug 220 blocks the water inlet 219, and the annular ring 224 of the sealing plug 220 contacts the contact sensor 225 during the upward movement. After the contact sensor 225 is contacted, the solenoid valve 227 can be controlled to open, so that the wastewater in the wastewater storage chamber 218 can be discharged through the drain pipe 226.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste gas treatment device for metallurgical equipment, comprising: A base plate (1) for carrying an exhaust gas treatment device; An exhaust gas purification box (4) is fixedly mounted on the top of the base plate (1); An exhaust gas purification component is arranged inside the exhaust gas purification box (4) and is used to purify the exhaust gas; It is characterized by further comprising: An exhaust gas dust removal box (2) is fixedly mounted on the top of the base plate (1), wherein a dust removal component for removing dust from the exhaust gas is arranged inside the exhaust gas dust removal box (2); A water supply box (3) is fixedly mounted on the top of the base plate (1), and a water supply component for injecting cooling water into the exhaust gas dust removal box (2) is connected to the water supply box (3).

2. The waste gas treatment device for metallurgical equipment according to claim 1, characterized in that: The exhaust gas purification component comprises a first mesh plate (401), a second mesh plate (402), a filter material inlet (403), a spray main pipe (404), a spray branch pipe (405), a water pump (406), a drug delivery pipe (407), a drug extraction pipe (408) and a connecting air pipe (411), wherein the first mesh plate (401) and the second mesh plate (402) are fixedly installed inside the exhaust gas purification box (4) at intervals, the filter material inlet (403) is opened through the side wall of the exhaust gas purification box (4), the spray main pipe (404) is fixedly installed at the bottom end of the first mesh plate (401), and the The spray branch pipes (405) are arranged in a circular array at the bottom of the spray main pipe (404); the water pump (406) is fixedly installed on the side wall of the spray main pipe (404); the drug delivery pipe (407) and the drug extraction pipe (408) are both fixedly connected to the water pump (406); one end of the drug delivery pipe (407) away from the water pump (406) is fixedly connected to the spray main pipe (404); one end of the drug extraction pipe (408) away from the water pump (406) extends to the interior of the exhaust gas purification box (4); and the connecting air pipe (411) is fixedly installed on the lower side wall of the exhaust gas purification box (4).

3. The waste gas treatment device for metallurgical equipment according to claim 2, characterized in that: One end of the connecting air pipe (411) extending into the interior of the exhaust gas purification box (4) is fixedly connected to a gas distribution tube (409), and the gas distribution tube (409) is provided with a plurality of diversion grooves (410) communicating with its inner cavity.

4. The waste gas treatment device for metallurgical equipment according to claim 1, characterized in that: The water supply assembly comprises a mounting seat (301), a piston cylinder (302), a piston plate (303), a water diversion pipe (304), a first one-way valve (305), a first water delivery pipe (306), a second one-way valve (307), a second water delivery pipe (308) and a third one-way valve (309), wherein the mounting seat (301) is fixedly mounted on the top surface of the base plate (1), the piston cylinder (302) is fixedly mounted on the mounting seat (301), the piston plate (303) is slidably arranged inside the piston cylinder (302), and the water diversion pipe (304) is fixedly mounted On the top wall of the piston cylinder (302), the top end of the water diversion pipe (304) is fixedly connected to the water supply tank (3), the first one-way valve (305) is fixedly installed on the water diversion pipe (304), the first water delivery pipe (306) is fixedly installed on the outer wall of one side of the piston cylinder (302), the second one-way valve (307) is fixedly installed on the first water delivery pipe (306), the second water delivery pipe (308) is fixedly installed on the outer wall of the other side of the piston cylinder (302), and the third one-way valve (309) is fixedly installed on the second water delivery pipe (308).

5. The waste gas treatment device for metallurgical equipment according to claim 2, characterized in that: The dust removal component comprises an exhaust gas inlet (201), an exhaust gas filter pipe (202), an air intake pipe (203), an exhaust gas filter screen (204), a first baffle (205), a second baffle (206), an air outlet (211), an exhaust gas delivery pipe (212) and an air passage opening (228); the exhaust gas inlet (201) is opened on the left side wall of the exhaust gas dust removal box (2); the exhaust gas filter pipe (202) is fixedly installed on the outside of the exhaust gas inlet (201); the air intake pipe (203) is fixedly installed on the left side wall of the exhaust gas filter pipe (202); the exhaust gas filter screen (204) is slidably inserted into the interior of the exhaust gas filter pipe (202); the first baffle (205) is fixedly installed on the inner bottom wall of the exhaust gas dust removal box (2); There is a gap between the first baffle plate (205) and the inner top wall of the exhaust gas dust removal box (2); the second baffle plate (206) is fixedly mounted on the inner top wall of the exhaust gas dust removal box (2); the second baffle plate (206) is an "L"-shaped plate; the side of the second baffle plate (206) away from the inner top wall of the exhaust gas dust removal box (2) is fixedly connected to the inner side wall of the exhaust gas dust removal box (2); the air outlet (211) is arranged on the inner top wall of the exhaust gas dust removal box (2); the exhaust gas conveying pipe (212) is fixedly mounted at the port of the air outlet (211); the end of the exhaust gas conveying pipe (212) away from the air outlet (211) is fixedly connected to the outer end of the connecting air pipe (411); and the air passage opening (228) is opened through the horizontal surface of the second baffle plate (206).

6. The waste gas treatment device for metallurgical equipment according to claim 5, characterized in that: The dust removal assembly further comprises a steam generating pipe (207), a sliding plate (215), a piston rod (216) and a return spring (217); the steam generating pipe (207) is fixedly mounted on the inner wall of the exhaust dust removal box (2); the steam generating pipe (207) is located on the left side of the first baffle (205); one end of the steam generating pipe (207) extends to the outside of the exhaust dust removal box (2) and is fixedly connected to the first water pipe (306) and one end away from the piston cylinder (302); the sliding plate (215) is slidably arranged on the exhaust dust removal box (2), the top wall of the sliding plate (215) is fitted with the bottom surface of the second baffle (206), the remaining outer peripheral wall of the second baffle (206) is fitted with the inner peripheral wall of the exhaust gas dust removal box (2), the piston rod (216) is slidably set on the right side wall of the exhaust gas dust removal box (2), the return spring (217) is sleeved on the outside of the piston rod (216), one end of the return spring (217) is fixedly connected to the side wall of the sliding plate (215), and the other end of the return spring (217) is fixedly connected to the right inner wall of the exhaust gas dust removal box (2).

7. The waste gas treatment device for metallurgical equipment according to claim 6, characterized in that: The waste gas dust removal box (2) is also provided with a waste heat recovery component for recovering heat from the high-temperature waste gas. The waste heat recovery component includes a water inlet pipe (208), a heat exchange pipe (209), a water outlet pipe (210), a drain pipe (213) and a first water supply pipe (214). The water inlet pipe (208) is fixedly mounted on the inner wall of the waste gas dust removal box (2), and a plurality of water inlet pipes (208) are provided. The water outlet pipe (210) is fixedly mounted on the inner wall of the waste gas dust removal box (2). The water outlet pipe (210) is arranged opposite to the water inlet pipe (208), and the number of the water outlet pipes (210) and the water inlet pipe (208) is the same. A plurality of heat exchange pipes (209) are fixedly connected between the water inlet pipe (208) and the water outlet pipe (210); the water inlet pipe (208), the heat exchange pipe (209) and the water outlet pipe (210) are all arranged between the second baffle (206) and the inner top wall of the exhaust gas dust removal box (2); the end of the water inlet pipe (208) extending to the outside of the exhaust gas dust removal box (2) is fixedly connected to a first water supply pipe (214); the end of the water outlet pipe (210) extending to the outside of the exhaust gas dust removal box (2) is fixedly connected to a drain pipe (213); the end of the first water supply pipe (214) away from the water inlet pipe (208) is fixedly connected to the end of the second water supply pipe (308) away from the piston cylinder (302).

8. The waste gas treatment device for metallurgical equipment according to claim 5, characterized in that: The waste gas dust removal box (2) is also provided with a sewage discharge assembly for discharging sewage generated during the dust reduction process, the sewage discharge assembly comprising a waste water storage chamber (218), a water inlet (219), a sealing plug (220), a chute (221), a slide rod (222), a tension spring (223), an annular ring (224), a contact sensor (225), a sewage discharge pipe (226) and a solenoid valve (227). The waste water storage chamber (218) is provided at the waste gas dust removal box (2). The waste gas dust removal box (2) is provided with a water inlet (219) on the bottom wall of the waste gas dust removal box (2), the waste water storage chamber (218) is connected with the inner cavity of the waste gas dust removal box (2) through the water inlet (219), the slide groove (221) is provided on the inner bottom wall of the waste water storage chamber (218), the slide rod (222) is slidably arranged inside the slide groove (221), and the tension spring (223) is sleeved outside the slide rod (222). The sealing plug (220) is fixedly mounted on the top of the slide rod (222), and the sealing plug (220) is plugged into the inside of the water inlet (219), the bottom end of the tension spring (223) is fixedly connected to the inner bottom wall of the slide groove (221), the top end of the tension spring (223) is fixedly connected to the bottom surface of the sealing plug (220), the annular ring (224) is fixedly mounted on the outer peripheral wall of the lower part of the sealing plug (220), and the contact sensor (22 5) is fixedly mounted on the inner top wall of the wastewater storage chamber (218), there is a distance between the annular ring (224) and the contact sensor (225), the sewage pipe (226) is fixedly mounted on the outer wall of the exhaust gas dust removal box (2), and the sewage pipe (226) is connected to the wastewater storage chamber (218), the solenoid valve (227) is fixedly mounted on the sewage pipe (226), and the solenoid valve (227) is electrically connected to the contact sensor (225).

9. The waste gas treatment device for metallurgical equipment according to claim 6, characterized in that: The steam generating pipe (207) comprises a water storage pipe (2071) and a steam spray pipe (2072); the water storage pipe (2071) is fixedly connected to the inner wall of the exhaust gas dust removal box (2); there are a plurality of steam spray pipes (2072); the plurality of steam spray pipes (2072) are fixedly installed on the water storage pipe (2071) at equal intervals; each of the steam spray pipes (2072) is provided with a plurality of steam spray holes (2074); the plurality of steam spray holes (2074) are distributed in a circular array on the steam spray pipe (2072).

10. The waste gas treatment device for metallurgical equipment according to claim 9, characterized in that: A plurality of heat absorbing plates (2073) are also fixedly installed at equal distances on the outer wall of the water storage pipe (2071); the heat absorbing plates (2073) are arranged at the lower part of the steam injection hole (2074); and the material of the heat absorbing plates (2073) is aluminum.

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