Device for reducing humidity of compressed air in carbon black production

Abstract

The utility model discloses a device for reducing the humidity of compressed air in carbon black production. The device comprises a preliminary dehumidification device, the preliminary dehumidification device is connected with a premixing device, the premixing device is connected with an air compression device, and the air compression device is connected with a liquid-gas cyclone separation device; the preliminary dehumidification device comprises an electric control gate valve, the electric control gate valve is connected with an air pump, the air pump is connected with a U-shaped bent pipe, a silica gel adsorption layer is arranged at the rear end of the U-shaped bent pipe and connected with a one-way valve, and the one-way valve is connected with an inlet of the premixing device; a first tail gas heat pipe is arranged at the front end of the U-shaped bent pipe, a first condenser is arranged at an inlet of the U-shaped bent pipe, a second condenser is arranged below the first condenser, and a first floating ball type liquid-gas separation device is arranged at the bottom of the U-shaped bent pipe. According to the device, preliminary dehumidification work is carried out before air compression, it is ensured that the humidity and temperature of compressed air are within a controllable range, heat of tail gas in the carbon black production process is reasonably utilized for heat preservation and air heating, and energy can be saved.

Description

Technical Field

[0001] This utility model relates to the field of air drying, and more particularly to a device for reducing the humidity of compressed air in carbon black production. Background Technology

[0002] Compressed air is an important power energy product for modern large enterprises. It is generated primarily through two methods: positive displacement compressors, such as piston, screw, and vane compressors, which increase air pressure by changing volume; and velocity compressors, such as centrifugal compressors, which increase air pressure by increasing air velocity and then decreasing it to diffuse the pressure. It consumes a large amount of electrical or steam energy to compress air, and its main applications include: raw material gas for gas products, fuel combustion, power transmission, material mixing, mine ventilation, and instrument control.

[0003] The air compressor used is a screw air compressor. This type of air compressor compresses air by rotating the screw inside the main unit. During the compression process, the air releases a large amount of heat. At the same time, the moisture in the air will heat up and vaporize, entering the downstream system of the air compressor station together with the air. This causes the moisture content data of the compressed air processed by the downstream drying system to fail to meet the production requirements, ultimately resulting in the compressed air moisture content data of the production unit not meeting the standards, causing irreversible damage to the instruments and equipment. Utility Model Content

[0004] The purpose of this utility model is to address the above-mentioned problems. This utility model aims to provide a device for reducing the humidity of compressed air in carbon black production, including a preliminary dehumidification device, which is connected to a premixing device, which is connected to an air compression device, and the air compression device is connected to a liquid-gas cyclone separator.

[0005] The preliminary dehumidification device includes an electrically controlled gate valve connected to an air pump, which is connected to a U-shaped bend. A silica gel adsorption layer is installed at the rear end of the U-shaped bend, and the silica gel adsorption layer is connected to a one-way valve, which is connected to the inlet of a premixing device. A first exhaust gas heat pipe is installed at the front end of the U-shaped bend, a first condenser is installed at the inlet of the U-shaped bend, a second condenser is installed below the first condenser, and a first float-type liquid-gas separator is installed at the bottom of the U-shaped bend.

[0006] Preferably, a mesh filter is provided at the inlet of the premixing device, and a second float-type liquid-gas separator is provided at the lower part of the mesh filter; the premixing device is wrapped in a water circulation insulated box, a second exhaust gas heat pipe is provided in the water circulation insulated box, and a thermometer and a hygrometer are provided in the premixing device.

[0007] Preferably, one end of the second exhaust gas heat pipe is connected to the first flow regulating valve, and the other end is connected to a three-way valve. The three-way valve is connected to a three-way valve and a second flow regulating valve. The second flow regulating valve is connected to the first exhaust gas heat pipe, and the first exhaust gas heat pipe is connected to the three-way valve.

[0008] Preferably, the liquid-gas cyclone separator has a cylindrical body at the top, a conical body at the bottom, a third float-type liquid-gas separator at the bottom, an air outlet at the top, and an air inlet on the side of the cylindrical body connected to the outlet of an air compressor.

[0009] Preferably, two sets of water-cooled heat exchangers are installed on the outside of the cylindrical body, with the cold water inlets of the two sets of water-cooled heat exchangers arranged opposite each other.

[0010] Preferably, the first float-type liquid-gas separator includes a liquid collection pipe, a valve is directly installed between the liquid collection pipe and the liquid discharge pipe, a float is installed in the liquid discharge pipe, and a limiting plate is installed in the liquid collection pipe; the limiting plate is connected to the float.

[0011] This utility model has the following beneficial effects:

[0012] Preliminary dehumidification was performed before air compression to ensure that the humidity and temperature of the compressed air were within a controllable range.

[0013] The air pump and electrically controlled gate valve of the preliminary dehumidification unit work together to ensure that no more water is mixed in after the air is heated.

[0014] The heat from the exhaust gas during the carbon black production process is utilized for heat preservation and air heating, which saves energy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the preliminary dehumidification device of this utility model.

[0017] Figure 3 This is a schematic diagram of the exhaust gas heat delivery structure of this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] Preliminary dehumidification device 100, premixing device 200, air compression device 300, liquid-gas cyclone separator 400, electrically controlled gate valve 11, air pump 12, first tail gas heat pipe 13, first float-type liquid-gas separator 14, one-way valve 15, U-shaped bend 16, first condenser 17, second condenser 18, silica gel adsorption layer 19, mesh filter 21, second float-type liquid-gas separator 22, water circulation insulated box 23, second tail gas heat pipe 24, first flow regulator;

[0020] Cylindrical body 41, conical body 42, third float-type liquid-gas separator 43, air outlet 44, water-cooled heat exchanger 45. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "an," and similar terms, do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] like Figure 1-3 This embodiment provides an apparatus for reducing the humidity of compressed air in carbon black production, including a preliminary dehumidification device 100, four preliminary dehumidification devices 100 connected to a premixing device 200, the premixing device 200 connected to an air compression device 300, and the air compression device 300 connected to a liquid-gas cyclone separator 400.

[0025] The preliminary dehumidification device 100 includes an electrically controlled gate valve 11, which is connected to an air pump 12. The air pump 12 is connected to a U-shaped bend 16. A silica gel adsorption layer 19 is installed at the rear end of the U-shaped bend 16, and the silica gel adsorption layer 19 is connected to a one-way valve 15, which is connected to the inlet of the premixing device 200. A first exhaust gas heat pipe 13 is installed at the front end of the U-shaped bend 16, a first condenser 17 is installed at the inlet of the U-shaped bend 16, a second condenser 18 is installed below the first condenser 17, and a first float-type liquid-gas separator 14 is installed at the bottom of the U-shaped bend 16. The silica gel adsorption layer 19 can adsorb water in the air after condensation treatment, and the silica gel adsorption layer 19 can be disassembled and replaced, which can also reflect the effect of preliminary dehumidification.

[0026] The condensing device is similar to an air conditioner structure. The condensing device is connected in sequence to the first condenser 17 and the second condenser 18. In this way, the temperature of the second condenser 18 is lower than that of the first condenser 17, which can further condense water from the air, and then discharge it through the first float-type liquid-gas separator 14.

[0027] A mesh filter 21 is installed at the inlet of the premixing device 200, and a second float-type liquid-gas separator 22 is installed at the bottom of the mesh filter 21. The premixing device 200 is enclosed in a water circulation insulated box 23, and a second exhaust gas heat pipe 24 is installed in the water circulation insulated box 23. The premixing device 200 is equipped with a thermometer and a hygrometer to check whether the temperature and humidity meet the requirements.

[0028] When multiple preliminary dehumidification devices 100 enter the premixing device 200, there will be a temperature difference between the heat-insulating gas in the premixing device 200 and the gas that has just entered. Heat is exchanged at the mesh filter 21, causing condensation into water, which is then discharged from the second float-type liquid-gas separator 22.

[0029] One end of the second exhaust gas heat pipe 24 is connected to the first flow regulating valve 51, and the other end is connected to the three-way valve 52. The three-way valve 52 is connected to the three-way valve 53 and the second flow regulating valve 54 respectively. The second flow regulating valve 54 is connected to the first exhaust gas heat pipe 13, and the first exhaust gas heat pipe 13 is connected to the three-way valve 53.

[0030] The high-temperature exhaust gas is regulated by the first flow regulating valve 51 and then introduced into the second exhaust gas heat pipe 24 to exchange heat with the circulating water, so that the water temperature remains constant. If the outdoor temperature is very low, the exhaust gas can be introduced into the first exhaust gas heat pipe 13 to heat the air supplied by the air pump 12, so that the condenser can remove water from the air more efficiently.

[0031] The liquid-gas cyclone separator 400 has a cylindrical body 41 at the top, a conical body 42 at the bottom, a third float-type liquid-gas separator 43 at the bottom, and an air outlet 44 at the top. The air inlet on the side of the cylindrical body 41 is connected to the outlet of the air compressor 300. Two sets of water-cooled heat exchangers 45 are installed outside the cylindrical body 41, with the cold water inlets of the two sets of water-cooled heat exchangers 45 facing each other, which can make the cooling more even. The air compressor 300 obtains air from the premixing device 200. The air humidity and temperature are within a controllable range. After being compressed and heated by the air compressor 300, the gas enters the air inlet pipe of the cyclone separator 400 tangentially. Constrained by the wall of the device, it forms a rotational motion. The separated clean gas forms an upward internal vortex near the central axis and is discharged through the exhaust pipe at the top. After heat exchange in the water-cooled heat exchanger 45, it condenses into water, falls into the third float-type liquid-gas separator 43, and is discharged. The treated air is sent out from the air outlet 44.

[0032] The first float-type liquid-gas separator 14 includes a liquid collection pipe 141, a valve 145 directly connected to the liquid collection pipe 141 and the liquid discharge pipe 142, a float 143 installed in the liquid discharge pipe 142, and a limiting plate 144 installed in the liquid collection pipe 141; the limiting plate 144 is connected to the float 143; when the float 143 floats to a designated height, the valve 145 is opened, discharging all the liquid. The third float-type liquid-gas separator 43 and the second float-type liquid-gas separator 22 have the same structure.

[0033] The above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions also fall within the scope of the present utility model, and the protection scope of the present utility model should be defined by the claims.

Claims

1. An apparatus for reducing the humidity of compressed air in carbon black production, characterized in that, It includes a preliminary dehumidification device, which is connected to a premixing device, which is connected to an air compressor, and the air compressor is connected to a liquid-gas cyclone separator. The preliminary dehumidification device includes an electrically controlled gate valve connected to an air pump, which is connected to a U-shaped bend. A silica gel adsorption layer is installed at the rear end of the U-shaped bend, and the silica gel adsorption layer is connected to a one-way valve, which is connected to the inlet of a premixing device. A first exhaust gas heat pipe is installed at the front end of the U-shaped bend, a first condenser is installed at the inlet of the U-shaped bend, a second condenser is installed below the first condenser, and a first float-type liquid-gas separator is installed at the bottom of the U-shaped bend.

2. The apparatus for reducing the humidity of compressed air in carbon black production according to claim 1, characterized in that, A mesh filter is installed at the inlet of the premixing device, and a second float-type liquid-gas separator is installed at the bottom of the mesh filter. The premixing device is wrapped in a water circulation insulated box, and a second exhaust gas heat pipe is installed in the water circulation insulated box. The premixing device is equipped with a thermometer and a hygrometer.

3. The apparatus for reducing the humidity of compressed air in carbon black production according to claim 2, characterized in that, One end of the second exhaust gas heat pipe is connected to the first flow regulating valve, and the other end is connected to a three-way valve. The three-way valve is connected to a three-way valve and a second flow regulating valve. The second flow regulating valve is connected to the first exhaust gas heat pipe, and the first exhaust gas heat pipe is connected to the three-way valve.

4. The apparatus for reducing the humidity of compressed air in carbon black production according to claim 1, characterized in that, The liquid-gas cyclone separator has a cylindrical body at the top, a conical body at the bottom, a third float-type liquid-gas separator at the bottom, an air outlet at the top, and an air inlet on the side of the cylindrical body connected to the outlet of an air compressor.

5. The apparatus for reducing the humidity of compressed air in carbon black production according to claim 4, characterized in that, Two sets of water-cooled heat exchangers are installed on the outside of the cylindrical body, with the cold water inlets of the two sets of water-cooled heat exchangers positioned opposite each other.

6. The apparatus for reducing the humidity of compressed air in carbon black production according to claim 1, characterized in that, The first float-type liquid-gas separator includes a liquid collection pipe, a valve is directly installed between the liquid collection pipe and the liquid discharge pipe, a float is installed in the liquid discharge pipe, and a limiting plate is installed in the liquid collection pipe; the limiting plate is connected to the float.

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