CN209386317U - A high-efficiency environment-friendly steelmaking smoke and dust waste gas treatment device - Google Patents

Abstract

The utility model discloses a high-efficiency environment-friendly steelmaking smoke and dust waste gas treatment device, which includes an air inlet pipe and an air duct. An electric heating wire is installed on one side of the air inlet pipe, and one side of the electric heating wire is located in the middle of the air inlet pipe. A heat exchange tube is fixed, and an air duct is connected above the surface of one side of the air inlet tube. In the utility model, an electric heating wire is provided at the inner port of the air inlet pipe, which can re-burn the harmful gas that is not fully burned in the smoke and dust exhaust gas, so that the exhaust gas can be completely burned, and the emission of harmful gas can be reduced, which is beneficial to subsequent treatment. There are two layers of branch water pipes on the upper and lower sides of the channel, and a number of water mist nozzles are evenly distributed on the surface of the branch water pipes. The acidic liquid sprayed by the water mist nozzles can neutralize the SO2 gas contained in the exhaust gas on the one hand, and remove the SO2 gas contained in the exhaust gas on the other hand. Carrying a large amount of solid particles, the exhaust gas after secondary purification enters the dust collector under the action of the exhaust fan for final purification treatment.

Description

A high-efficiency environment-friendly steelmaking smoke and dust waste gas treatment device

technical field

The utility model relates to the technical field of industrial equipment, in particular to an efficient and environment-friendly steelmaking fume and waste gas treatment device.

Background technique

With the development of my country's urbanization process and the improvement of industrial level, the emission of soot and waste gas is also increasing. How to properly deal with these smoke dust and waste gas to achieve harmlessness, reduction and energy saving has become a major problem in today's society. The smoke dust and waste gas in the atmosphere not only pollute the environment very seriously, but also have a great impact on human health. threat. At present, the traditional steelmaking plants are the ones that emit more smoke and dust and exhaust gas in the industry. The exhaust gas and various dusts discharged in the industry seriously pollute the environment. The main sources of exhaust gas in the steel plant include the transportation, loading and unloading and processing of raw materials and fuels. A large amount of dust-containing waste gas; various furnaces in steel plants will produce a large amount of dust-containing and harmful gas waste gas during the reproduction process; waste gas discharged from chemical reactions in the production process.

Although the current steel plants generally have waste gas treatment devices, a large amount of water resources will be wasted in the treatment of waste gas. The existing soot treatment devices generally do not treat or treat the small amount of sulfur dioxide and incompletely burned carbon monoxide contained in the soot. The result is not ideal, it is easy to form acid rain, which endangers people's health, and there is no detection of the discharged gas, so the effect of no pollution cannot be achieved.

Utility model content

The purpose of the utility model is to solve the shortcomings in the prior art, and propose an efficient and environment-friendly steelmaking smoke and dust waste gas treatment device.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an efficient and environmentally friendly steelmaking smoke and dust waste gas treatment device, including an air inlet pipe and an air duct, and an electric heating wire is installed on one side of the air inlet pipe, and the electric heating wire A heat exchange tube is fixed on one side in the middle of the air inlet pipe, and an air duct is connected above the surface of one side of the air inlet pipe, and a branch water pipe is fixed inside the air duct, and a plurality of water mist nozzles are evenly distributed on the surface of the branch water pipe A dust collector is connected to the surface of one side of the air duct, and a cloth bag is connected to one end inside the dust collector, and the inside of the cloth bag is supported by a support frame.

Preferably, a water tank is connected below the air duct, and the interior of the water tank is separated by a filter plate, a collection port is provided at the lower end of the air duct, and the collection port is located above the interior of the water tank, and the upper side of the water tank is connected to the main water pipe There is a water pump, and the side above the water pump is connected to the surface on one side of the air duct through the main water pipe.

Preferably, the branch water pipes are vertically distributed inside the air duct in two layers up and down, and the branch water pipes have a "day"-shaped structure, and a PVC dehydrator is installed obliquely above the branch water pipes inside the air duct, and the air duct is additionally One side surface is connected with a return air duct.

Preferably, the heat exchange tube is a "U"-shaped structure, and the exhaust gas detector is installed on the surface directly below the heat exchange tube below the air inlet pipe. There are two exhaust gas detectors, and the two exhaust gas detectors are They are respectively installed on the surface of the air inlet pipe and the air duct.

Preferably, an observation window is inlaid on the front surface of the dust collector, and an exhaust fan is connected to one end of the dust collector.

Preferably, the exhaust gas detector is electrically connected to the water pump and the heating wire respectively through a controller.

Preferably, an interlayer is provided inside the filter plate, and the interlayer is filled with activated carbon.

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

1. In this utility model, a heating wire is provided at the inner port of the air inlet pipe, which can re-burn the harmful gas that is not fully burned in the smoke and dust exhaust gas, so that the exhaust gas can be completely burned, and the emission of harmful gas can be reduced, which is beneficial to the subsequent treatment. There are two layers of branch water pipes on the upper and lower sides of the air duct, and multiple water mist nozzles are evenly distributed on the surface of the branch water pipes. The acidic liquid sprayed by the water mist nozzles can neutralize the SO2 gas contained in the exhaust gas on the one hand, and remove it on the other hand. A large number of solid particles carried in the exhaust gas, the exhaust gas after secondary purification enters the dust collector under the action of the exhaust fan for final purification treatment, and some small solid particles carried in the exhaust gas are filtered out by the cloth bag in the dust collector. The multiple purification treatment methods not only improve the purification efficiency of the exhaust gas treatment device, but also realize the harmlessness of the smoke and dust, ensuring the safety of the emission.

2. In the utility model, a U-shaped heat exchange tube is arranged inside the air inlet pipe, and the heat in the exhaust gas is converted to the water in the heat exchange tube by using the principle of heat exchange, so as to realize the recovery and utilization of heat and reduce the loss of flue gas at the same time. temperature, which is convenient for subsequent purification. At the same time, the waste water generated by the water mist nozzle is recycled into the water tank through the collection port, and filtered through the filter plate separated in the water tank, so that the water in the water tank can be recycled again, avoiding the waste of water resources. By setting PVC The dehydrator is convenient to filter out the moisture in the exhaust gas, which is beneficial to the final purification treatment of the dust collector. The device has a good exhaust gas purification effect, a simple structure, and can also realize heat recovery, which has high practicability. Exhaust gas detectors are installed on the air duct surface respectively, which can detect the content of SO2 and CO gas in the exhaust gas. When the content of SO2 and CO gas exceeds the standard, the controller controls the temperature of the heating wire and the water spraying amount of the water mist nozzle. On the one hand, it can ensure the effect of flue gas treatment, on the other hand, it can effectively save the energy consumption of the exhaust gas device, which not only greatly improves the use functionality of the exhaust gas and dust purification treatment device, but also ensures its use effect and benefit, and is suitable for wide promotion.

Description of drawings

Fig. 1 is the structural schematic diagram of a kind of highly efficient environment-friendly steelmaking flue dust exhaust gas treatment device proposed by the utility model;

Fig. 2 is a schematic diagram of the internal structure of the dust collector of a high-efficiency environment-friendly steelmaking smoke and dust waste gas treatment device proposed by the utility model;

Fig. 3 is a schematic diagram of the branch water pipe structure of an efficient environment-friendly steelmaking smoke and dust waste gas treatment device proposed by the utility model.

illustration:

1-water tank, 2-filter plate, 3-collection port, 4-heat exchange tube, 5-exhaust gas detector, 6-air inlet pipe, 7-heating wire, 8-water pump, 9-air duct, 10-dust collector , 11-exhaust fan, 12-PVC dehydrator, 13-support frame, 14-cloth bag, 15-return air pipe, 16-water mist nozzle, 17-branch water pipe.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific Therefore, it cannot be construed as a limitation on the present invention; the terms "first", "second" and "third" are only used for descriptive purposes, and cannot be interpreted as indicating or implying relative importance; in addition, Unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be a direct connection, or an indirect connection through an intermediary, or an internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

Please refer to Figure 1-3, a high-efficiency environment-friendly steelmaking smoke and dust waste gas treatment device, including an air inlet pipe 6 and an air duct 9, an electric heating wire 7 is installed on one side of the air inlet pipe 6, and one side of the electric heating wire 7 is located at the inlet A heat exchange tube 4 is fixed in the middle of the air duct 6, an air duct 9 is connected above the surface of the air inlet duct 6, and a branch water pipe 17 is fixed inside the air duct 9, and a plurality of water mist is evenly distributed on the surface of the branch water pipe 17 The spray head 16 is connected with a dust collector 10 on one side surface of the air duct 9 , and a cloth bag 14 is connected to one end inside the dust collector 10 , and the inside of the cloth bag 14 is supported by a support frame 13 .

The water tank 1 is connected under the air duct 9, and the inside of the water tank 1 is separated by the filter plate 2. The lower end of the air duct 9 is provided with a collection port 3, and the collection port 3 is located above the interior of the water tank 1, and the upper side of the water tank 1 is connected by a main water pipe. There is a water pump 8, and the upper side of the water pump 8 is connected to the surface of one side of the air duct 9 through the main water pipe, and the branch water pipes 17 are vertically distributed in the air duct 9 in two upper and lower layers, and the branch water pipes 17 have a "day"-shaped structure, A PVC dehydrator 12 is installed obliquely above the branch water pipe 17 inside the air duct 9, which can filter out the moisture contained in the exhaust gas, and the other side of the air duct 9 is connected with a return air pipe 15, which can recycle unqualified gas and replace it. The heat pipe 4 is a "U"-shaped structure, and the exhaust gas detector 5 is installed on the surface directly below the heat exchange tube 4 below the air inlet pipe 6. There are two exhaust gas detectors 5, and the two exhaust gas detectors 5 are installed separately. On the surface of the air inlet pipe 6 and the air duct 9, an observation window is inlaid on the front surface of the dust collector 10, and an exhaust fan 11 is connected to one end of the dust collector 10, and the exhaust gas detector 5 is electrically connected to the water pump 8 and the heating wire 7 respectively through the controller. An interlayer is provided inside the filter plate 2, and the interlayer is filled with activated carbon, which can filter the waste liquid in the water tank 1 and is convenient for recycling.

Working principle: The steelmaking smoke and dust exhaust gas treatment device is equipped with a heating wire 7 at the inner port of the air inlet pipe 6, which can burn the harmful gas that is not fully burned in the smoke and dust exhaust gas, so that the exhaust gas can be completely burned, and the emission of harmful gases can be reduced. To facilitate subsequent processing, two layers of branch water pipes 17 are arranged up and down inside the air duct 9, and a plurality of water mist nozzles 16 are evenly distributed on the surface of the branch water pipes 17. The acidic liquid sprayed by the water mist nozzles 16 can neutralize the waste gas The contained SO2 gas, on the other hand, can remove a large amount of solid particles carried in the exhaust gas, and the exhaust gas after secondary purification enters the dust collector 10 under the action of the exhaust fan 11 for final purification treatment, and passes through the bag in the dust collector 10 14 Filter out some small solid particles carried in the exhaust gas. This multiple purification treatment method not only improves the purification efficiency of the exhaust gas treatment device, but also realizes the harmlessness of the smoke and dust, ensuring the safety of the discharge. 6. There is also a U-shaped heat exchange tube 4 inside. Using the principle of heat exchange, the heat in the exhaust gas is transferred to the water in the heat exchange tube 4 to realize heat recovery and utilization, and at the same time reduce the temperature of the flue gas to facilitate subsequent purification. At the same time, the waste water produced by the water mist nozzle 16 is recycled into the water tank 1 through the collection port 3, and filtered through the filter plate 2 separated in the water tank 1, so that the water in the water tank 1 can be recycled again, avoiding the waste of water resources. The dehydrator 12 is convenient to filter out the moisture in the exhaust gas, which is beneficial to the final purification treatment of the dust collector 10. This device has a good exhaust gas purification effect, a simple structure, and can also realize heat recovery, which has high practicability. Exhaust gas detectors 5 are respectively installed on the surface of air duct 6 and air duct 9, which can detect the content of SO2 and CO gas in the exhaust gas. When the content of SO2 and CO gas exceeds the standard, the controller controls to adjust the temperature of the heating wire 7 and the water mist nozzle respectively The water spray volume of 16, on the one hand, can ensure the effect of flue gas treatment, and on the other hand, can effectively save the energy consumption of the exhaust gas device, which not only greatly improves the functionality of the exhaust gas and dust purification treatment device, but also ensures its use effect and The use benefit is suitable for wide promotion.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (7)

1. A high-efficiency environment-friendly steelmaking smoke and dust waste gas treatment device, comprising an air inlet pipe (6) and an air duct (9), characterized in that a heating wire (7) is installed on one side of the air inlet pipe (6) , and one side of the heating wire (7) is located in the middle of the air inlet pipe (6) and a heat exchange pipe (4) is fixed, and an air duct (9) is connected above the surface of the air inlet pipe (6), and the air A branch water pipe (17) is fixed inside the road (9), and a plurality of water mist nozzles (16) are evenly distributed on the surface of the branch water pipe (17), and a dust collector (10) is connected to the surface of one side of the air duct (9). And a cloth bag (14) is connected to one end inside the dust remover (10), and the inside of the cloth bag (14) is supported by a support frame (13). 2. A high-efficiency environment-friendly steelmaking smoke and dust waste gas treatment device according to claim 1, characterized in that, a water tank (1) is connected below the air duct (9), and the inside of the water tank (1) passes through a filter plate (2) Separated, the lower end of the air duct (9) is provided with a collection port (3), and the collection port (3) is located above the inside of the water tank (1), and the upper side of the water tank (1) is connected by a main water pipe A water pump (8) is arranged, and the upper side of the water pump (8) is connected to the surface of one side of the air duct (9) through a main water pipe. 3. A high-efficiency environment-friendly steelmaking smoke and dust waste gas treatment device according to claim 1 or 2, characterized in that, the branch water pipes (17) are vertically distributed in the air duct (9) in two upper and lower layers, And the branch water pipe (17) is a "day"-shaped structure, and the upper side of the branch water pipe (17) is located inside the air duct (9) and a PVC dehydrator (12) is installed obliquely, and the other side surface of the air duct (9) is connected to Return air duct (15) is arranged. 4. A high-efficiency environment-friendly steelmaking smoke and dust waste gas treatment device according to claim 1, characterized in that, the heat exchange tube (4) is a "U"-shaped structure, and the heat exchange tube (4) is directly below An exhaust gas detector (5) is installed on the surface below the air inlet pipe (6). There are two exhaust gas detectors (5) in total, and the two exhaust gas detectors (5) are installed on the air inlet pipe (6) respectively. and air duct (9) surface. 5. A high-efficiency environment-friendly steelmaking smoke and dust waste gas treatment device according to claim 1, characterized in that, the front end surface of the dust collector (10) is inlaid with an observation window, and one end of the dust collector (10) is connected with a draft machine (11). 6. A kind of high-efficiency environment-friendly steelmaking smoke and dust exhaust gas treatment device according to claim 4, characterized in that, the exhaust gas detector (5) is electrically connected to the water pump (8) and the heating wire (7) respectively through the controller. sexual connection. 7. An efficient environment-friendly steelmaking smoke and dust waste gas treatment device according to claim 2, characterized in that an interlayer is provided inside the filter plate (2), and the interlayer is filled with activated carbon.