Treatment device for CO2-rich industrial waste gas

Abstract

The utility model discloses a CO2-rich industrial waste gas treatment device which comprises a bottom plate, a plurality of treatment tanks are fixedly mounted at the top of the bottom plate, industrial waste gas inlet pipes are fixedly communicated with the left sides of the treatment tanks, a PLC (programmable logic controller) is fixedly mounted at the left side of the top of the bottom plate, and a plurality of indicator lamps are fixedly and electrically connected to the top of the PLC. By arranging a series of structures, carbon dioxide in industrial waste gas can be conveniently and sequentially subjected to spraying purification and activated carbon adsorption purification, the concentration of the carbon dioxide in the purified gas can be detected, the gas is directly discharged when being qualified, the next treatment tank is automatically started for continuous purification when being unqualified, and the like until the gas is qualified; the whole process is intelligent and automatic, purification treatment is ensured to reach the required standard by using all starting at different times, meanwhile, a relatively high energy-saving effect is achieved, the phenomenon of direct emission when the carbon dioxide retention is still relatively high is reduced, and the environment-friendly requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas purification, in particular to a disposal device for CO2-rich industrial waste gas. Background Technique

[0002] CO2-rich industrial waste gas refers to industrial waste gas with a relatively high carbon dioxide content, which is mainly generated in the gas produced by high-temperature combustion treatment in industry. Many industrial production processes require high-temperature combustion treatment, which will generate a large amount of waste gas. For example, in a coal-fired power plant, coal combustion will produce a large amount of harmful gases such as carbon dioxide. If the waste gas is directly discharged without treatment, it will greatly affect the environment and harm people.

[0003] For the existing treatment of CO2-rich industrial waste gas, the general purification method is to purify it by simply spraying lime water or using an activated carbon filter plate. The following problems need to be faced in the existing treatment process: 1. There is still a relatively high amount of carbon dioxide in the gas after spraying purification, and it is difficult to ensure that the purification treatment meets the required standards before external discharge, which cannot meet the environmental protection requirements. In view of this, this application proposes a disposal device for CO2-rich industrial waste gas to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a disposal device for CO2-rich industrial waste gas to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A disposal device for CO2-rich industrial waste gas, including a bottom plate. A plurality of treatment tanks are fixedly installed on the top of the bottom plate. An industrial waste gas inlet pipe is fixedly connected and communicated on the left side of the treatment tank. A PLC controller is fixedly installed on the left side of the top of the bottom plate. A plurality of warning lights are fixedly installed and electrically connected to the top of the PLC controller. The plurality of warning lights are arranged in one-to-one correspondence with the plurality of treatment tanks. The industrial waste gas inlet pipe located on the leftmost side is used to be connected to the waste gas discharge pipeline of external industrial equipment to supply waste gas into the leftmost treatment tank.

[0006] The treatment tank is filled with lime water. A gas guiding and spraying treatment component is fixedly installed in the treatment tank and is matched with the corresponding industrial waste gas inlet pipe. A water pump electrically connected to the PLC controller is fixedly installed at the bottom of the treatment tank. The water inlet and outlet of the water pump both extend into the corresponding treatment tank. The water outlet of the water pump is fixedly connected and communicated with the bottom end of the gas guiding and spraying treatment component. The gas guiding and spraying treatment component is used to guide and disperse the incoming waste gas to the periphery and spray lime water on the industrial waste gas when the water pump is started, and use the uniformly sprayed lime water to carry out the reaction absorption and purification treatment work on the carbon dioxide in the industrial waste gas.

[0007] An activated carbon filter plate is fixedly installed inside the treatment tank. At the top right of the treatment tank, a CO2 detection and exhaust switching component located above the corresponding activated carbon filter plate is connected and fixed. The CO2 detection and exhaust switching component is electrically connected to the PLC controller. Multiple industrial waste gas inlet pipes except the one at the leftmost side are respectively connected and fixed to the corresponding CO2 detection and exhaust switching components. The provided activated carbon filter plate is used for re-adsorbing and purifying carbon dioxide in the purified gas. The CO2 detection and exhaust switching component is used to detect the carbon dioxide concentration of the purified gas on both sides, transmit the concentration value to the PLC controller, and is controlled by the PLC controller to automatically discharge when the concentration value is lower than the preset value, and switch to passing into the next treatment tank for treatment when the concentration value is higher than the preset value. The PLC controller controls the water pump and the corresponding indicator light on the next treatment tank to turn on when the received carbon dioxide concentration value is higher than the preset value, and so on, which is convenient for purifying and detecting carbon dioxide in industrial waste gas, and using the next treatment tank for continuous purification work when the concentration is unqualified until it is qualified.

[0008] Preferably, the air guiding and spraying treatment component includes a conical cover fixedly sleeved inside the treatment tank. The conical cover is located above the corresponding industrial waste gas inlet pipe. An arc-shaped plate is arranged inside the conical cover. A shunt box is arranged above the arc-shaped plate. Spray heads inclined downward are respectively connected and fixed to the four sides of the shunt box. A vertical pipe is connected and fixed to the bottom of the shunt box. The bottom end of the vertical pipe penetrates through the corresponding conical cover and is connected and fixed to the water outlet of the water pump. The arc-shaped plate is fixedly sleeved on the corresponding vertical pipe.

[0009] Preferably, the CO2 detection and exhaust switching component includes a horizontal pipe connected and fixed to the top right of the corresponding treatment tank. The right end of the horizontal pipe is set as a sealing structure. A CO2 sensor is fixedly installed on the left side of the top of the horizontal pipe. The detection end of the CO2 sensor extends into the corresponding horizontal pipe. A first electromagnetic valve is connected and fixed to the right side of the top of the horizontal pipe. The top end of the first electromagnetic valve is connected and fixed to an exhaust connection pipe. A second electromagnetic valve is connected and fixed to the bottom of the horizontal pipe. The bottom end of the second electromagnetic valve is connected and fixed to an L-shaped conduit. The right end of the L-shaped conduit is connected and fixed to the left end of the corresponding industrial waste gas inlet pipe. The CO2 sensor, the first electromagnetic valve, and the second electromagnetic valve are all electrically connected to the PLC controller.

[0010] Preferably, a storage battery is fixedly installed on the top left of the bottom plate. The PLC controller is fixed and electrically connected to the top of the storage battery. Multiple water pumps, the first electromagnetic valve, and the second electromagnetic valve are all electrically connected to the storage battery.

[0011] Preferably, a manual water filling valve and a drain valve are connected and fixed to the right side of the treatment tank.

[0012] Preferably, the shunt box is located below the corresponding activated carbon filter plate.

[0013] Preferably, the liquid level height of the lime water is lower than the height of the right end of the corresponding industrial waste gas inlet pipe.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. By the cooperation of the industrial waste gas inlet pipe, multiple treatment tanks, water pumps, PLC controllers, air guiding and spraying treatment components, activated carbon filter plates and CO2 detection and exhaust switching components, it is possible to sequentially perform spraying purification and activated carbon adsorption purification on carbon dioxide in industrial waste gas, detect the carbon dioxide concentration of the purified gas, directly discharge when qualified, and automatically activate the next treatment tank to continue purification when unqualified, and so on until qualified. By using the method of connecting multiple treatment tanks in series and automatically activating the next treatment tank when the previous purification is unqualified, the whole process is intelligent and automatic. By not enabling all at the same time, it ensures that the purification treatment meets the required standards while having a high energy-saving effect, reduces the phenomenon of direct discharge when the carbon dioxide retention is still high, and meets the environmental protection requirements;

[0016] 2. By the cooperation of the PLC controller and the indicator lights, it is possible to turn on the indicator lights corresponding to the treatment tanks controlled and enabled during the purification work, which is convenient for personnel to visually judge which treatment tanks are in use and which are not, and is convenient for personnel to accurately understand and control.

[0017] The present utility model is provided with a series of structures, which is convenient for sequentially performing spraying purification and activated carbon adsorption purification on carbon dioxide in industrial waste gas, detecting the carbon dioxide concentration of the purified gas, directly discharging when qualified, and automatically activating the next treatment tank to continue purification when unqualified, and so on until qualified. The whole process is intelligent and automatic. By not enabling all at the same time, it ensures that the purification treatment meets the required standards while having a high energy-saving effect, reduces the phenomenon of direct discharge when the carbon dioxide retention is still high, and meets the environmental protection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a device for disposing of CO2-rich industrial waste gas proposed by the present utility model;

[0019] Figure 2 is a schematic cross-sectional structural diagram of a device for disposing of CO2-rich industrial waste gas proposed by the present utility model;

[0020] Figure 3 is Figure 2 an enlarged structural diagram of part A in

[0021] In the figure: 1, bottom plate; 2, PLC controller; 3, warning lamp; 4, treatment tank; 5, industrial waste gas inlet pipe; 6, water pump; 7, vertical pipe; 8, conical cover; 9, arc plate; 10, shunt box; 11, spray head; 12, activated carbon filter plate; 13, horizontal pipe; 14, first solenoid valve; 15, CO2 sensor; 16, second solenoid valve; 17, L-shaped conduit; 18, drain valve. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] As Figures 1 to 3 shown, a disposal device for CO2-rich industrial waste gas proposed in this embodiment includes a bottom plate 1, and the bottom plate 1 is used for fixed installation at a specified position. A plurality of treatment tanks 4 are fixedly installed on the top of the bottom plate 1. The left side of the treatment tank 4 is fixedly connected and communicated with an industrial waste gas inlet pipe 5. A PLC controller 2 is fixedly installed on the left side of the top of the bottom plate 1. A plurality of warning lamps 3 are fixedly installed and electrically connected to the top of the PLC controller 2. The plurality of warning lamps 3 are arranged in one-to-one correspondence with the plurality of treatment tanks 4. The industrial waste gas inlet pipe 5 located on the leftmost side is used to be connected to the waste gas discharge pipe of an external industrial equipment to supply waste gas into the leftmost treatment tank 4;

[0024] The treatment tank 4 is filled with lime water, and the liquid level height of the lime water is lower than the height of the right end of the corresponding industrial waste gas inlet pipe 5. A manual water addition valve and a drain valve 18 are fixedly connected and communicated with the right side of the treatment tank 4 for subsequent personnel to add or discharge lime water for water replacement work. A gas guiding and spraying treatment assembly matching with the corresponding industrial waste gas inlet pipe 5 is fixedly installed in the treatment tank 4. A water pump 6 electrically connected to the PLC controller 2 is fixedly installed at the bottom of the treatment tank 4. The water inlet and outlet of the water pump 6 both extend into the corresponding treatment tank 4. The water outlet of the water pump 6 is fixedly connected and communicated with the bottom end of the gas guiding and spraying treatment assembly. The gas guiding and spraying treatment assembly is used to guide and disperse the incoming waste gas to the periphery and spray lime water on the industrial waste gas when the water pump 6 is started, and use the uniformly sprayed lime water to react and absorb and purify the carbon dioxide in the industrial waste gas;

[0025] An activated carbon filter plate 12 is fixedly installed inside the treatment tank 4. A CO2 detection and exhaust switching assembly located above the corresponding activated carbon filter plate 12 is fixedly connected and communicated to the right top of the treatment tank 4. The CO2 detection and exhaust switching assembly is electrically connected to the PLC controller 2. Multiple industrial waste gas inlet pipes 5 other than the one located on the far left are respectively fixedly connected and communicated to the corresponding CO2 detection and exhaust switching assembly. The provided activated carbon filter plate 12 is used for the secondary adsorption and purification of carbon dioxide in the purified gas. The CO2 detection and exhaust switching assembly is used to detect the carbon dioxide concentration of the purified gas on both sides, transmit the concentration value to the PLC controller 2, and is controlled by the PLC controller 2 to perform automatic emission work when the concentration value is lower than the preset value, and change to introduce it into the next treatment tank 4 for treatment work when the concentration value is higher than the preset value. The PLC controller 2 controls the water pump 6 and the corresponding warning light 3 on the next treatment tank 4 to turn on when the received carbon dioxide concentration value is higher than the preset value, and so on, facilitating the purification and detection of carbon dioxide in industrial waste gas, and using the next treatment tank 4 to continue the purification work when the concentration is unqualified until it is qualified.

[0026] Specifically, the air guiding and spraying treatment assembly includes a conical cover 8 fixedly sleeved inside the treatment tank 4. The conical cover 8 is located above the corresponding industrial waste gas inlet pipe 5. An arc-shaped plate 9 is arranged inside the conical cover 8. A shunt box 10 is arranged above the arc-shaped plate 9. The shunt box 10 is located below the corresponding activated carbon filter plate 12. Spray heads 11 inclined downward are fixedly connected and communicated to the four sides of the shunt box 10. A vertical pipe 7 is fixedly connected and communicated to the bottom of the shunt box 10. The bottom end of the vertical pipe 7 penetrates through the corresponding conical cover 8 and is fixedly connected and communicated to the water outlet of the water pump 6. The arc-shaped plate 9 is fixedly sleeved on the corresponding vertical pipe 7. A set hole fixedly connected to the outer side of the corresponding vertical pipe 7 is opened at the top of the arc-shaped plate 9. The provided conical cover 8, arc-shaped plate 9, shunt box 10, spray heads 11 and vertical pipe 7 cooperate. When the water pump 6 is started, the lime water in the corresponding treatment tank 4 is pumped through the vertical pipe 7 to the shunt box 10 and then sprayed obliquely downward around through multiple spray heads 11. When the industrial waste gas enters, it floats upward and enters the corresponding conical cover 8, and is dispersed to the periphery under the blocking action of the arc-shaped plate 9. By dispersing the industrial waste gas and spraying lime water, the uniform purification treatment of carbon dioxide in the industrial waste gas is realized.

[0027] Further, the CO2 detection exhaust gas switching component includes a horizontal pipe 13 fixedly connected to the right top of the corresponding treatment tank 4. The right end of the horizontal pipe 13 is set as a sealing structure. A CO2 sensor 15 is fixedly installed on the left side of the top of the horizontal pipe 13. The detection end of the CO2 sensor 15 extends into the corresponding horizontal pipe 13. A first solenoid valve 14 is fixedly connected to the right side of the top of the horizontal pipe 13. The top end of the first solenoid valve 14 is fixedly connected to an exhaust connecting pipe. A second solenoid valve 16 is fixedly connected to the bottom of the horizontal pipe 13. The bottom end of the second solenoid valve 16 is fixedly connected to an L-shaped conduit 17. The right end of the L-shaped conduit 17 is fixedly connected to the left end of the corresponding industrial waste gas inlet pipe 5. The CO2 sensor 15, the first solenoid valve 14, and the second solenoid valve 16 are all electrically connected to the PLC controller 2. A storage battery is fixedly installed on the left side of the top of the bottom plate 1. The PLC controller 2 is fixedly installed and electrically connected to the top of the storage battery. Multiple water pumps 6, the first solenoid valve 14, and the second solenoid valve 16 are all electrically connected to the storage battery, which has the effect of supplying power to the multiple water pumps 6, the first solenoid valve 14, and the second solenoid valve 16; the horizontal pipe 13, the CO2 sensor 15, the first solenoid valve 14, the second solenoid valve 16, and the L-shaped conduit 17 are configured to cooperate. The purified gas enters the corresponding horizontal pipe 13. The CO2 sensor 15 detects the carbon dioxide concentration in the corresponding horizontal pipe 13 and transmits the concentration value to the PLC controller 2. When the concentration value is lower than the preset value, the PLC controller 2 controls the first solenoid valve 14 on the corresponding horizontal pipe 13 to open for gas discharge. When the concentration value is higher than the preset value, the PLC controller 2 controls the second solenoid valve 16 on the corresponding horizontal pipe 13 to open, and controls the water pump 6 on the next treatment tank 4 and the corresponding warning light 3 to turn on, so that the gas sequentially passes through the corresponding second solenoid valve 16, the L-shaped conduit 17, and the industrial waste gas inlet pipe 5 and enters the next treatment tank 4 for continuous purification work, and so on until it is qualified. When it is qualified, the next treatment tank 4 is not enabled. The whole process is intelligent and automatic. By not enabling all at the same time, it ensures that the treatment standard meets the requirements while having a high energy-saving effect.

[0028] The method of using the present embodiment is as follows: when in use, the industrial waste gas inlet pipe 5 on the far left is connected to the waste gas discharge pipe of the external industrial equipment to allow the waste gas to pass into the treatment tank 4 on the far left. The PLC controller 2 is pre-set in advance according to the discharge requirements to control the opening concentration value range of the first solenoid valve 14 and the second solenoid valve 16 respectively. The opening concentration value range of the second solenoid valve 16 is larger than the opening concentration value range of the first solenoid valve 14. It is pre-set to synchronously control the opening and closing of the water pump 6 and the corresponding prompt light 3 on the next treatment tank 4 when controlling the opening and closing of the second solenoid valve 16. When initially used, the water pump 6 on the far left is first turned on to extract the lime water in the corresponding treatment tank 4 and pump it into the diverter box 10 through the vertical pipe 7, and then spray it obliquely downward around the multiple nozzles 11. When the industrial waste gas enters, it floats up and passes into the corresponding conical cover 8, and is dispersed to the surrounding side under the shielding effect of the arc plate 9. The industrial waste gas is dispersed and sprayed with lime water to achieve uniform purification of carbon dioxide in the industrial waste gas. The gas floats up and passes through the activated carbon filter plate 12, and the activated carbon filter plate 12 is used to adsorb and purify the carbon dioxide in the gas again;

[0029] The gas after two purifications enters the corresponding transverse pipe 13, and the CO2 sensor 15 detects the carbon dioxide concentration in the corresponding transverse pipe 13 and transmits the concentration value to the PLC controller 2. When the concentration value is lower than the preset value, that is, it is in a smaller concentration range, the PLC controller 2 controls the first solenoid valve 14 on the corresponding transverse pipe 13 to open and directly discharge the gas. When the concentration value is higher than the preset value, the PLC controller 2 controls the second solenoid valve 16 on the corresponding transverse pipe 13 to open, and controls the water pump 6 on the next processing tank 4 and the corresponding prompt light 3 to open, so that the gas passes through the corresponding second solenoid valve 16, the L-shaped conduit 17 and the corresponding warning light 3 in sequence. The industrial waste gas inlet pipe 5 is passed into the next treatment tank 4 for continued purification, and so on, until it is qualified. By purifying and detecting the carbon dioxide in the industrial waste gas, and using the next treatment tank 4 to continue purification when it is unqualified and not activating the next treatment tank 4 when it is qualified, the whole process is intelligent and automatic. By not activating all of them at the same time, it is ensured that the purification treatment meets the required standards while having a high energy-saving effect, reducing the phenomenon of direct emissions when the carbon dioxide retention is still high, and meeting environmental protection needs; by turning on the prompt light 3, it is convenient for personnel to intuitively judge which treatment tanks 4 are used and which are not used, so that personnel can accurately understand and control.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A disposal device for CO₂-rich industrial waste gas, comprising a bottom plate (1), characterized in that: A plurality of treatment tanks (4) are fixedly installed on the top of the bottom plate (1). The left side of the treatment tank (4) is fixedly connected and communicated with an industrial waste gas inlet pipe (5). A PLC controller (2) is fixedly installed on the left side of the top of the bottom plate (1). A plurality of warning lights (3) are fixedly installed on the top of the PLC controller (2) and electrically connected thereto. The plurality of warning lights (3) are arranged in one-to-one correspondence with the plurality of treatment tanks (4); Lime water is filled in the treatment tank (4). An air guiding and spraying treatment component matching with the corresponding industrial waste gas inlet pipe (5) is fixedly installed in the treatment tank (4). A water pump (6) electrically connected to the PLC controller (2) is fixedly installed at the bottom of the treatment tank (4). The water inlet and outlet of the water pump (6) both extend into the corresponding treatment tank (4), and the water outlet of the water pump (6) is fixedly connected and communicated with the bottom end of the air guiding and spraying treatment component; An activated carbon filter plate (12) is fixedly installed in the treatment tank (4). A CO2 detection and exhaust switching component located above the corresponding activated carbon filter plate (12) is fixedly connected and communicated with the right side top of the treatment tank (4). The CO2 detection and exhaust switching component is electrically connected to the PLC controller (2). Except for the industrial waste gas inlet pipe (5) located at the leftmost side, the other plurality of industrial waste gas inlet pipes (5) are respectively fixedly connected and communicated with the corresponding CO2 detection and exhaust switching components.

2. The disposal device for rich CO2 industrial waste gas according to claim 1, characterized in that: The air guiding and spraying treatment component includes a conical cover (8) fixedly sleeved in the treatment tank (4). The conical cover (8) is located above the corresponding industrial waste gas inlet pipe (5). An arc-shaped plate (9) is arranged in the conical cover (8). A flow dividing box (10) is arranged above the arc-shaped plate (9). Nozzles (11) inclined downward are fixedly connected and communicated with the four sides of the flow dividing box (10). A vertical pipe (7) is fixedly connected and communicated with the bottom of the flow dividing box (10). The bottom end of the vertical pipe (7) penetrates through the corresponding conical cover (8) and is fixedly connected and communicated with the water outlet of the water pump (6). The arc-shaped plate (9) is fixedly sleeved on the corresponding vertical pipe (7).

3. The disposal device for rich CO2 industrial waste gas according to claim 1, wherein: The CO2 detection and exhaust switching component includes a horizontal pipe (13) fixedly connected and communicated with the right side top of the corresponding treatment tank (4). The right end of the horizontal pipe (13) is provided with a plugging structure. A CO2 sensor (15) is fixedly installed on the left side of the top of the horizontal pipe (13). The detection end of the CO2 sensor (15) extends into the corresponding horizontal pipe (13). A first electromagnetic valve (14) is fixedly connected and communicated with the right side top of the horizontal pipe (13). The top end of the first electromagnetic valve (14) is fixedly connected and communicated with an exhaust connection pipe. A second electromagnetic valve (16) is fixedly connected and communicated with the bottom of the horizontal pipe (13). The bottom end of the second electromagnetic valve (16) is fixedly connected and communicated with an L-shaped conduit (17). The right end of the L-shaped conduit (17) is fixedly connected and communicated with the left end of the corresponding industrial waste gas inlet pipe (5). The CO2 sensor (15), the first electromagnetic valve (14) and the second electromagnetic valve (16) are all electrically connected to the PLC controller (2).

4. The disposal device for rich CO2 industrial waste gas according to claim 3, characterized in that: A storage battery is fixedly installed on the left side of the top of the bottom plate (1). The PLC controller (2) is fixedly installed on the top of the storage battery and electrically connected thereto. The plurality of water pumps (6), the first electromagnetic valve (14) and the second electromagnetic valve (16) are all electrically connected to the storage battery.

5. The disposal device for rich CO2 industrial waste gas according to claim 1, characterized in that: A manual water adding valve and a drain valve (18) are fixedly connected and communicated on the right side of the treatment tank (4).

6. The disposal device for rich CO2 industrial waste gas according to claim 2, characterized in that: The shunt box (10) is located below the corresponding activated carbon filter plate (12).

7. The disposal device for rich CO2 industrial waste gas according to claim 1, characterized in that: The liquid level height of the lime water is lower than the height of the right end of the corresponding industrial waste gas inlet pipe (5).

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