Converter capable of realizing low-cost alloying structure smelting

Abstract

The utility model relates to the technical field of iron and steel smelting, and discloses a converter capable of realizing low-cost alloying structure smelting, which comprises a converter body, a flue gas port is arranged on one side of the upper end of the converter body, a gas guide pipe is fixedly connected outside the flue gas port, and the tail end of the gas guide pipe is fixedly connected with an evaporative cooling pipeline assembly. The rear end of the evaporative cooling pipeline assembly is connected with an evaporative cooler through a first conveying pipe, the tail end of the evaporative cooler is connected with an electrostatic dust collector through a second conveying pipe, the tail end of the electrostatic dust collector is connected with a hydraulic cup valve pipe through a third conveying pipe, the rear end of the hydraulic cup valve pipe is connected with an ignition pipe, and the bottom face of the hydraulic cup valve pipe is connected with a recovery pipe. And a gas component analyzer is arranged on the third conveying pipe. By arranging the evaporative cooling pipeline assembly, the electrostatic dust collector, the hydraulic cup valve pipe and the gas component analyzer, waste heat recovery, metal dust recovery and carbon monoxide recovery can be carried out on flue gas, additional benefits are provided for steel smelting, and the purposes of reducing cost and improving economic benefits are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of steel smelting, in particular to a converter with low-cost alloying structure smelting. BACKGROUND

[0002] The converter is a kind of smelting furnace, impurity elements in molten iron are oxidized by blowing oxygen (or air) to smelt steel, it is a kind of oxygen blowing smelting container that can be inclined and cylindrical, the furnace body is cylindrical, is supported on a horizontal shaft frame and can rotate.In steel smelting, the converter can effectively melt pig iron, scrap steel and other iron alloy materials, and control the impurity content in steel by controlling the supply of oxygen and the bottom blowing system of the furnace bottom, so as to obtain the required steel product.

[0003] The patent with the current announcement number CN219490063U discloses a smelting converter, which comprises a furnace body, a smoke exhaust hood is installed on the top of the furnace body, a smoke exhaust pipe is arranged on the top of the smoke exhaust hood, a feeding pipe is arranged on the side of the smoke exhaust hood, a support is installed outside the furnace body, a sliding rail is installed on the support, a raw material conveying belt mechanism is installed on the sliding rail, a first oil cylinder is installed on the support, the first oil cylinder drives the raw material conveying belt mechanism to move on the sliding rail, an air inlet pipe is connected to the side wall of the feeding pipe, a heat exchange coil is arranged on the inner side wall of the smoke exhaust pipe, one end of the heat exchange coil is connected with an oxygen supply pipe, the other end of the heat exchange coil is connected with the air inlet pipe, a baffle is installed on the outer end of the feeding pipe, a baffle plate is fixed on the top of the inner end of the feeding pipe, the baffle plate is composed of a horizontal plate and a vertical plate, the vertical plate is fixed on the lower edge of the outer side edge of the horizontal plate, a plurality of through holes are formed in the horizontal plate.The improved prior art avoids the overflow of smoke gas during the feeding of the converter, and reduces the interference of the feeding process on the smelting environment in the furnace body.

[0004] The above-mentioned device avoids the overflow of smoke gas during the feeding of the converter, but still has the following shortcomings:

[0005] In the process of steel smelting, the smoke gas generated can carry a large amount of energy, such as latent heat and sensible heat, which can be recycled, at the same time, the dust in the smoke gas can contain more than 50% of total iron, which can be collected as raw material for steelmaking or used in other processes, in addition, the content of carbon monoxide in the converter smoke gas is very high, which can be as high as more than 80%.If these resources can be recycled, additional benefits can be provided for the smelting of steel, the purpose of reducing cost and improving economic benefit can be achieved. UTILITY MODEL CONTENTS

[0006] In view of the shortcomings of the prior art, the utility model provides a converter with low-cost alloying structure smelting, which can recover heat energy, recover iron powder and treat carbon monoxide from the smoke gas generated in steel smelting, so as to improve economic benefit and reduce cost.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a converter of low -cost alloying structure smelting, including converter body, the side of converter body upper end is equipped with flue, the outside fixed connection of flue has the gas duct, the tail fixed connection of gas duct has the vaporization cooling pipeline subassembly, the back end of vaporization cooling pipeline subassembly is connected with evaporative cooler through transport pipe no.

[0008] Further, the vaporization cooling pipeline subassembly is provided with three, and the vaporization cooling pipeline subassembly is connected through flange.

[0009] Further, the vaporization cooling pipeline subassembly includes vaporization pipeline, and the outside of vaporization pipeline is provided with the flow ring connected with cooling pipeline water pipe, the flow ring is provided with two, and the top surface of the flow ring of front end is provided with water inlet pipe, and the bottom surface of the flow ring of rear end is provided with steam output pipe.

[0010] Further, the flue is fixedly connected with the gas duct through flange.

[0011] Further, the gas analyzer is provided with two groups along the transport pipe three axial interval.

[0012] Further, the hydraulic cup valve pipe is provided with electric control valve.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] By setting the flue gas port on the converter body, the flue gas can be directly guided, so that the flue gas does not need to be collected and discharged through the exhaust hood, and the flue gas will not overflow to reduce the influence on the working environment; by setting the vaporization cooling pipeline assembly, not only can the flue gas be collected, cooled and transported, but also steam can be produced for other production projects, fully utilizing the waste heat resources in the flue gas; by setting the evaporative cooler, the flue gas can be further cooled and treated, and the flue gas can be conditioned to change the specific resistance characteristics of the dust, which is beneficial to the efficient capture of the subsequent electrostatic precipitator; by setting the electrostatic precipitator, the dust in the flue gas can be captured, and the metal dust such as total iron contained in the dust can be recycled as a raw material for steelmaking or used in other processes; by setting the hydraulic cup valve pipe and the gas component analyzer, the gas components of the purified flue gas can be detected, if the coal gas recovery conditions (such as carbon monoxide content, oxygen content, etc. meet the specified standards), the flue gas is guided into the recovery pipe through the switching of the hydraulic cup valve pipe for the next step of recovery, improving the resource utilization rate; if the coal gas recovery conditions are not met, the flue gas is guided into the ignition pipe through the switching of the hydraulic cup valve pipe and is delivered to the chimney for ignition and dispersion to reduce the harm and pollution. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole three-dimensional structure schematic view of the utility model;

[0016] Figure 2 It is a three-dimensional structure schematic view of the vaporization cooling pipeline assembly of the utility model.

[0017] In the figure: 1, converter body; 101, flue gas port; 2, gas guide pipe; 3, vaporization cooling pipeline assembly; 301, vaporization pipeline; 302, communication pipe; 303, flow ring; 304, water inlet pipe; 305, steam output pipe; 4, transport pipe one; 5, evaporative cooler; 6, transport pipe two; 7, electrostatic precipitator; 8, transport pipe three; 9, hydraulic cup valve pipe; 10, ignition pipe; 11, recovery pipe; 12, gas component analyzer; 13, electric control valve. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0019] As Figures 1 to 2As shown, a converter that can be low-cost alloying structure smelting includes converter body 1, the upper end of converter body 1 is provided with flue gas port 101, flue gas port 101 is fixedly connected with gas guide pipe 2, the tail end of gas guide pipe 2 is fixedly connected with vaporization cooling pipeline assembly 3, the rear end of vaporization cooling pipeline assembly 3 is connected with evaporative cooler 5 through transport pipe one 4, the tail end of evaporative cooler 5 is connected with electrostatic precipitator 7 through transport pipe two 6, the tail end of electrostatic precipitator 7 is connected with hydraulic cup valve pipe 9 through transport pipe three 8, the rear end of hydraulic cup valve pipe 9 is connected with combustion pipe 10, the bottom surface of hydraulic cup valve pipe 9 is connected with recovery pipe 11, gas composition analyzer 12 is arranged on transport pipe three 8.

[0020] As Figure 1 shown, the converter that can be low-cost alloying structure smelting in the utility model is similar with the existing converter structure, for example, the patent with the announcement number CN219490063U discloses a smelting converter, the main improvement point of the utility model is that the flue gas generated in the smelting of steel can be heat energy recovery, iron powder recovery and carbon monoxide processing, Figures 1 to 2As shown, the low-cost alloying structure smelting converter in the utility model, in the using process, first through the water inlet pipe 304 into the cooling water into the flow ring 303, then through the communication pipe 302 into the vaporization pipeline 301, and let the evaporative cooler 5 also complete water, complete the preparation work;Subsequently, the flue gas is guided through the flue gas port 101, so that the flue gas enters the vaporization cooling pipeline assembly 3 through the air guide pipe 2, at this time the cooling water is flowing in the serpentine water pipeline in the vaporization pipeline 301, and the flowing process will absorb the heat in the flue gas, because the temperature of the flue gas is much higher than the boiling point of water, the cooling water will be vaporized into water vapor, and under the action of fluid pressure, the water vapor will flow along the vaporization pipeline 301 to the steam outlet pipe 305, and finally be output to the place where the heat energy is needed, for other production projects;The flue gas through the vaporization cooling pipeline assembly 3 will enter the evaporative cooler 5, the evaporative cooler 5 will further cool the flue gas, prevent the flue gas temperature from being too high, and also can carry out the conditioning treatment to the flue gas, change the specific resistance characteristic of dust, be favorable for the efficient capture of the subsequent electrostatic precipitator 7;Subsequently, the flue gas will enter the electrostatic precipitator 7 through the conveying pipe two 6, the electrostatic precipitator 7 will use the potential difference generated by the high-voltage static power source to make the dust-containing gas ionize and charge, and the charged dust particles are attracted to the deposition electrode and discharged to settle, thereby realizing the dust removal effect, wherein the dust includes iron powder and other metal powders, the metal dust can be recycled and used as raw material for steelmaking or in other processes;Finally, the flue gas will enter the hydraulic cup valve pipe 9 under the communication of the conveying pipe three 8, at this time the gas composition analyzer 12 arranged on the conveying pipe three 8 will detect the gas composition of the purified flue gas, if it meets the coal gas recovery conditions (such as carbon monoxide content, oxygen content, etc. meet the specified standard), then remotely control the electric control valve 13, and guide the flue gas into the recovery pipe 11 through the switching of the hydraulic cup valve pipe 9 to carry out the next step of recovery, thereby improving the resource utilization rate;If it does not meet the coal gas recovery conditions, the flue gas will be guided into the ignition pipe 10 and transmitted to the chimney to be ignited and dispersed, so as to reduce the harm and pollution.

[0021] As Figure 2 shown, the vaporization cooling pipeline assembly 3 is provided with three, and the vaporization cooling pipeline assemblies 3 are connected through flanges.

[0022] Specifically, by arranging a plurality of vaporization cooling pipeline assemblies 3 for cooling, the latent heat, sensible heat and other heat carried by the flue gas can be better absorbed, and the resource utilization rate is improved.

[0023] As Figure 2As shown, the vaporization cooling pipeline assembly 3 comprises a vaporization pipeline 301, and outside the vaporization pipeline 301, two flow rings 303 are arranged and connected with the vaporization pipeline 301 through a communication pipe 302, the top surface of the front flow ring 303 is provided with a water inlet pipe 304, and the bottom surface of the rear flow ring 303 is provided with a steam outlet pipe 305.

[0024] Specifically, the cooling water enters the flow ring 303 through the water inlet pipe 304, and then enters the vaporization pipeline 301 through the communication pipe 302, and the cooling water will flow in the serpentine water pipeline in the vaporization pipeline 301, and the flowing process will absorb the heat in the flue gas, at this time, because the temperature of the flue gas is much higher than the boiling point of water, the cooling water will be vaporized into water vapor, under the action of fluid pressure, the water vapor will flow along the vaporization pipeline 301 to the steam outlet pipe 305, and finally be output to the place where the heat energy is needed through the steam outlet pipe 305, for other production projects, and the waste heat resource in the flue gas is fully utilized.

[0025] As shown in the figure, Figure 1 The flue gas port 101 is fixedly connected with the gas guide pipe 2 through a flange.

[0026] Specifically, by using the flange connection, the pipeline leakage can be effectively prevented by virtue of the excellent sealing performance, and the safe and stable operation of the pipeline and equipment is ensured, especially in the exposed pipeline with high temperature and high pressure, easy corrosion, large pipe diameter, etc., the necessity of flange connection is more prominent.

[0027] As shown in the figure, Figure 1 The gas analyzer 12 is axially spaced apart and provided with two groups.

[0028] Specifically, by arranging two gas component analyzers 12, comparison can be made, so that the data of gas detection is more accurate.

[0029] As shown in the figure, Figure 1 The hydraulic cup valve pipe 9 is provided with an electric control valve 13.

[0030] Specifically, the rotation of the hydraulic cup valve pipe 9 is controlled through the electric control valve 13, so that the hydraulic cup valve pipe 9 can be remotely controlled, and the staff does not need to operate at the valve, which simplifies the operation steps and improves the work efficiency.

[0031] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A converter for low-cost alloying of a structural melt, comprising a converter body (1), characterized in that The converter body (1) upper end one side is provided with flue gas port (101), the flue gas port (101) outside fixedly connected with gas guide pipe (2), the gas guide pipe (2) tail end fixedly connected with vaporization cooling pipeline assembly (3), the vaporization cooling pipeline assembly (3) rear end is connected with evaporative cooler (5) through transport pipe one (4), the evaporative cooler (5) tail end is connected with electrostatic precipitator (7) through transport pipe two (6), the electrostatic precipitator (7) tail end is connected with hydraulic cup valve pipe (9) through transport pipe three (8), the hydraulic cup valve pipe (9) rear end is connected with combustible pipe (10), and the hydraulic cup valve pipe (9) bottom surface is connected with recovery pipe (11), and transport pipe three (8) is provided with gas component analyzer (12).

2. A low cost alloyable structural metallurgically refined converter according to claim 1 characterised in that, The vaporization cooling pipeline assembly (3) is provided with three, and the vaporization cooling pipeline assembly (3) is connected through flange between the vaporization cooling pipeline assembly (3).

3. A low-cost alloyable structural metallurgically refined converter according to claim 2, characterised in that, The vaporization cooling pipeline assembly (3) includes vaporization pipeline (301), the vaporization pipeline (301) outside is provided with the flow circulation ring (303) connected with vaporization pipeline (301) through communication pipe (302), the flow circulation ring (303) is provided with two, and the top surface of the front end flow circulation ring (303) is provided with water inlet pipe (304), and the bottom surface of the rear end flow circulation ring (303) is provided with steam output pipe (305).

4. A low-cost alloyable structural metallurgically refined converter according to claim 2 or 3, characterised in that, The flue gas port (101) is fixedly connected with the gas guide pipe (2) through the flange.

5. A low-cost alloyable structural metallurgically refined converter according to claim 1, 2 or 3, characterised in that, The gas analyzer (12) is provided with two groups along the transport pipe three (8) axial interval.

6. A low cost alloyable structural metallurgically refined converter according to claim 4, characterised in that, The hydraulic cup valve pipe (9) is provided with electric control valve (13).

7. A low cost alloyable structural metallurgically refined converter according to claim 5, characterised in that, The hydraulic cup valve pipe (9) is provided with electric control valve (13).

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