Low-carbon treatment device for environmental protection engineering construction

Abstract

The invention belongs to the technical field of waste gas separation, and particularly relates to a low-carbon treatment device for environmental protection engineering construction, which comprises an absorption tower and a control cabinet arranged on one side of the absorption tower, the absorption tower is provided with a spraying absorption mechanism, the top of the absorption tower is provided with a discharge hole, and the low-carbon treatment device further comprises a gas inlet unit and a gas outlet unit, the gas inlet unit is arranged on one side of the absorption tower, a high-temperature hollow plate, a medium-temperature hollow plate and a low-temperature hollow plate are arranged below the gas inlet unit, and the distances between the high-temperature hollow plate, the medium-temperature hollow plate and the low-temperature hollow plate and the absorption tower are from far to near. Carbon dioxide in tail gas can be absorbed and removed, environment-friendly and low-carbon construction can be assisted, high-temperature tail gas can be fully cooled, the heat dissipation and cooling efficiency is improved, it is prevented that high temperature disturbs the efficiency of an absorbent and causes volatilization of the absorbent, meanwhile, air with low-concentration carbon dioxide can be exhausted in advance, and the environment-friendly and energy-saving effects are achieved. The carbon dioxide concentration and the absorbent utilization rate in the absorption tower are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of waste gas separation, and in particular relates to a low-carbon treatment device for environmental protection engineering construction. Background Art

[0002] With the acceleration of industrialization, factories generate a large amount of high-temperature exhaust gas during the production process. After a series of treatments, the exhaust gas contains a large amount of carbon dioxide. In order to avoid carbon dioxide aggravating the greenhouse effect and causing waste of resources, it is necessary to treat the carbon dioxide in the exhaust gas to help promote environmental protection and low-carbon construction.

[0003] Currently, there are many methods for treating carbon dioxide in high-temperature tail gas. The most common methods are to spray a special absorbent through an absorption tower to adsorb carbon dioxide to remove carbon dioxide, or to contact the tail gas with a special absorbent to absorb carbon dioxide, such as a low-carbon treatment device for environmental protection engineering construction disclosed in patent announcement number CN217829520U; In the high-temperature exhaust gas treatment process, high-temperature exhaust gas carries a large amount of heat. When high-temperature exhaust gas is continuously input into the exhaust gas treatment system, the heat exchange and cooling capacity of the exhaust gas transmission pipeline and each exhaust gas treatment unit is limited, resulting in the final exhaust gas temperature still being high. In such a high-temperature environment, taking common absorbents such as monoethanolamine as an example, its molecular thermal motion intensifies and the volatilization rate is greatly increased. On the one hand, the number of effective absorbents participating in the carbon dioxide absorption reaction is reduced, directly reducing the absorption efficiency of carbon dioxide. On the other hand, the absorbent volatilized into the atmosphere may cause secondary pollution to surrounding air, soil and other environmental elements. Summary of the invention

[0004] The purpose of the present invention is to provide a low-carbon treatment device for environmental protection engineering construction in view of the above problems.

[0005] To achieve the above object, the present invention adopts the following technical scheme: a low-carbon treatment device for environmental protection engineering construction, comprising an absorption tower and a control cabinet arranged on one side of the absorption tower, the absorption tower is equipped with a spray absorption mechanism, the top of the absorption tower is provided with a discharge hole, and further comprising: An air intake unit is arranged on one side of the absorption tower, and a high-temperature hollow plate, a medium-temperature hollow plate and a low-temperature hollow plate are arranged below the air intake unit, and the distances between the high-temperature hollow plate, the medium-temperature hollow plate and the low-temperature hollow plate and the absorption tower are from far to near; A microporous diversion unit is installed at the bottom of the air intake unit, and the air intake unit is connected with the high-temperature hollow plate, the medium-temperature hollow plate and the low-temperature hollow plate through the microporous diversion unit. The microporous diversion unit diverts the exhaust gas to the high-temperature hollow plate, the medium-temperature hollow plate and the low-temperature hollow plate based on the temperature; Three heat dissipation hollow plates are arranged below the low-temperature hollow plate, and the high-temperature hollow plate, the medium-temperature hollow plate and the low-temperature hollow plate are fixedly connected with the corresponding heat dissipation hollow plates through a square tube; Three heat dissipation units are all arranged at three heat dissipation hollow plates, and the three heat dissipation hollow plates are connected through the heat dissipation units; A plurality of detection and diversion units are all connected to the heat dissipation unit on the same side, and one of the gas outlet ends of each detection and diversion unit is connected to the absorption tower.

[0006] Preferably, the spray absorption mechanism includes a liquid storage tank arranged on one side of the absorption tower, a pumping assembly is arranged between the liquid storage tank and the lower end of the side wall of the absorption tower, a packing layer and a spray assembly are installed inside the absorption tower, a delivery pump is fixedly installed on the side wall of the liquid storage tank, a liquid inlet pipe is installed at the liquid inlet end of the spray assembly, a metering and early warning assembly is arranged between the delivery pump and the liquid inlet pipe, the control cabinet controls the operation of the metering and early warning assembly according to the electrical signals output by each detection and diversion unit, and the pumping assembly and the delivery pump are electrically connected to the control cabinet.

[0007] Preferably, the air intake unit comprises an air intake hollow plate arranged on one side of the absorption tower, and a high-temperature exhaust gas inlet pipe is fixedly connected to the end surface of the air intake hollow plate.

[0008] Preferably, the microporous diversion unit includes a plurality of microporous tubes fixedly plugged into the bottom of the air inlet hollow plate, and a temperature detection probe is installed on the tube wall of each microporous tube, and the detection end of each temperature detection probe is arranged on the inner side of the microporous tube on the same side, and each microporous tube is fixedly connected to a diversion hollow block, and a high-temperature air outlet pipe, a medium-temperature air outlet pipe and a low-temperature air outlet pipe are fixedly plugged into the bottom of each diversion hollow block, and an air outlet electric-controlled valve is installed inside the high-temperature air outlet pipe, the medium-temperature air outlet pipe and the low-temperature air outlet pipe, the high-temperature air outlet pipe is connected to the high-temperature hollow plate, the medium-temperature air outlet pipe is connected to the medium-temperature hollow plate, and the low-temperature air outlet pipe is connected to the low-temperature hollow plate, and the control cabinet controls the operation of the corresponding air outlet electric-controlled valve according to the strength of the electrical signal output by the temperature detection probe.

[0009] Preferably, each of the heat dissipation units includes a frame plate, and the frame plate is fixedly connected to the side wall of the heat dissipation hollow plate on the same side, a plurality of heat exchange tubes are arranged on the inner side of the frame plate, and each of the heat exchange tubes is communicated with the heat dissipation hollow plate on the same side, a mounting cover is fixedly installed on the top of the frame plate, and a fixing sleeve is installed on the top of the mounting cover, a hot air blower is installed inside the fixing sleeve, a plurality of evenly distributed holes connected to the mounting cover are opened on the top of the frame plate, a plurality of heat dissipation tubes are fixedly plugged into the bottom of the frame plate, and the hot air blower is electrically connected to the control cabinet.

[0010] Preferably, each of the detection and diversion units includes an end plate, which is fixedly connected to the end of the frame plate on the same side, and a detection hollow block is fixedly inserted on the side wall of the end plate, and each detection hollow block is connected to the heat exchange tube on the same side, an infrared emitter is fixedly installed on the inner top of each detection hollow block, and a light probe is fixedly installed on the inner wall of each detection hollow block on the side opposite to the infrared emitter on the same side, an air supply pipe is fixedly inserted at the end of each detection hollow block away from the heat exchange tube on the same side, and a normally open diversion solenoid valve is installed inside the air supply pipe, a diversion discharge pipe is fixedly inserted at a position of the pipe wall of the air supply pipe between the normally open diversion solenoid valve and the detection hollow block on the same side, and a normally closed diversion solenoid valve is installed inside the diversion discharge pipe, each of the air supply pipes is connected to the interior of the absorption tower, the infrared emitter is electrically connected to the control cabinet, and the control cabinet controls the operation of the corresponding normally open diversion solenoid valve and the normally closed diversion solenoid valve according to the electrical signal output by the light probe.

[0011] Preferably, the metering warning component includes a hollow column fixedly connected to the liquid outlet end of the delivery pump, and a liquid flow meter is installed on the side wall of the hollow column, the detection end of the liquid flow meter is arranged inside the hollow column, a normally open proportional solenoid valve is installed inside the liquid outlet end of the delivery pump, a U-shaped tube is fixedly inserted at a position of the tube wall of the liquid outlet end of the delivery pump below the normally open proportional solenoid valve, and the U-shaped tube is connected to the liquid inlet pipe, the liquid inlet pipe is connected to the interior of the hollow column, a normally closed proportional solenoid valve is installed inside the U-shaped tube, the liquid flow meter is electrically connected to the control cabinet, and each of the light probes is electrically connected to the normally closed proportional solenoid valve and the normally open proportional solenoid valve through the control cabinet.

[0012] Preferably, a heat accumulator is provided on one side of the absorption tower, the lower end of each of the heat dissipation pipes is fixedly connected to a transverse pipe, and the two ends of each transverse pipe penetrate the side wall of the heat accumulator.

[0013] Compared with the existing technology, the advantages of a low-carbon treatment device for environmental protection engineering construction are: Through the cooperation of the set absorption tower, control cabinet, spray absorption mechanism and discharge hole, the carbon dioxide in the exhaust gas entering the absorption tower can be absorbed and removed, so as to avoid the direct discharge of carbon dioxide in the exhaust gas to affect the environment, and contribute to environmental protection and low-carbon construction. Through the cooperation of the set air intake unit, high-temperature hollow plate, medium-temperature hollow plate, low-temperature hollow plate, microporous diversion unit, three heat dissipation hollow plates and three heat dissipation units, the high-temperature exhaust gas is microporously diverted, and based on the temperature of each diverted exhaust gas, the exhaust gas of different temperatures is automatically distributed and regulated to ensure that the high-temperature exhaust gas can be fully cooled. The heat dissipation and cooling efficiency can be improved, and the temperature of the exhaust gas entering the absorption tower can be kept at a good stability, thereby avoiding the high temperature affecting the absorption effect of the absorbent on carbon dioxide and causing the absorbent to volatilize.

[0014] By setting up a detection and diversion unit, the exhaust gas after cooling can be diverted and detected, and the air with low carbon dioxide concentration can be discharged in advance, thereby increasing the carbon dioxide concentration entering the absorption tower, improving the utilization rate of the absorbent, and facilitating the full removal of carbon dioxide.

[0015] By setting up the metering and early warning component, the personnel can be automatically and promptly reminded to replace the absorbent based on the detection results of the detection and diversion unit, so as to avoid the absorbent's poor absorption performance affecting the removal rate of carbon dioxide and ensure the low-carbon treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a low-carbon treatment device for environmental protection engineering construction provided by the present invention; Figure 2 This is a schematic diagram of the internal structure of an absorption tower of a low-carbon treatment device for environmental protection engineering construction provided by the present invention; Figure 3 It is a structural schematic diagram of a heat dissipation unit of a low-carbon treatment device for environmental protection engineering construction provided by the present invention; Figure 4 This is a structural schematic diagram of a microporous flow diversion unit of a low-carbon treatment device for environmental protection engineering construction provided by the present invention; Figure 5 The present invention provides a low-carbon treatment device for environmental protection engineering construction. Figure 3 A magnified view of the structure of part A; Figure 6 It is a structural schematic diagram of a metering and early warning component of a low-carbon treatment device for environmental protection engineering construction provided by the present invention.

[0017] In the figure: 1 absorption tower, 2 control cabinet, 3 spray absorption mechanism, 31 liquid storage tank, 32 pumping assembly, 33 packing layer, 34 spray assembly, 35 delivery pump, 36 liquid inlet pipe, 4 discharge hole, 5 air intake unit, 51 air intake hollow plate, 52 high temperature tail gas inlet pipe, 6 high temperature hollow plate, 7 medium temperature hollow plate, 8 low temperature hollow plate, 9 microporous diversion unit, 91 microporous tube, 92 temperature detection probe, 93 diversion hollow block, 94 high temperature outlet pipe, 95 medium temperature outlet pipe, 96 low temperature outlet pipe, 97 outlet electric control valve, 10 heat dissipation hollow plate, 11 square tube, 12 heat dissipation unit, 121 frame plate, 122 heat exchange tube, 123 installation cover, 124 fixing sleeve, 125 hot air blower, 126 equal distribution hole, 127 heat dissipation pipe, 13 detection shunt unit, 131 end plate, 132 detection hollow block, 133 infrared emitter, 134 light probe, 135 air supply pipe, 136 normally open shunt solenoid valve, 137 shunt discharge pipe, 138 normally closed shunt solenoid valve, 14 metering warning component, 141 hollow column, 142 liquid flow meter, 143 normally open proportional solenoid valve, 144 U-shaped pipe, 145 normally closed proportional solenoid valve, 15 heat accumulator, 16 cross pipe. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] like Figure 1-Figure 6 As shown, a low-carbon treatment device for environmental protection engineering construction includes an absorption tower 1 and a control cabinet 2 arranged on one side of the absorption tower 1, the absorption tower 1 is equipped with a spray absorption mechanism 3, and a discharge hole 4 is opened on the top of the absorption tower 1. The spray absorption mechanism 3 includes a liquid storage tank 31 arranged on one side of the absorption tower 1, a pumping assembly 32 is arranged between the liquid storage tank 31 and the lower end of the side wall of the absorption tower 1, a packing layer 33 and a spray assembly 34 are installed inside the absorption tower 1, a delivery pump 35 is fixedly installed on the side wall of the liquid storage tank 31, a liquid inlet pipe 36 is installed at the liquid inlet end of the spray assembly 34, and the delivery pump 35 and the liquid inlet pipe 36 are connected. A metering and early warning component 14 is arranged between them. The control cabinet 2 controls the metering and early warning component 14 to work according to the electrical signals output by each detection and diversion unit 13. The pumping component 32 and the delivery pump 35 are both electrically connected to the control cabinet 2. The pumping component 32 includes components such as a liquid pump and a pumping pipe, which can pump the absorbent generated by spraying on the lower side of the absorption tower 1 back into the liquid storage tank 31. The liquid storage tank 31 is provided with a liquid adding pipe, which can replenish the absorbent into the liquid storage tank 31. The liquid storage tank 31 is also provided with a drain pipe, which is convenient for desorption and regeneration of the absorbent. The carbon dioxide generated by desorption and regeneration can be collected and reused.

[0020] The air intake unit 5 is arranged on one side of the absorption tower 1, and a high-temperature hollow plate 6, a medium-temperature hollow plate 7 and a low-temperature hollow plate 8 are arranged below the air intake unit 5, and the distances between the high-temperature hollow plate 6, the medium-temperature hollow plate 7 and the low-temperature hollow plate 8 and the absorption tower 1 are from far to near. The air intake unit 5 includes an air intake hollow plate 51 arranged on one side of the absorption tower 1, and a high-temperature exhaust gas inlet pipe 52 is fixedly inserted on the end face of the air intake hollow plate 51.

[0021] The microporous shunt unit 9 is installed at the bottom of the air intake unit 5. The air intake unit 5 is connected with the high-temperature hollow plate 6, the medium-temperature hollow plate 7 and the low-temperature hollow plate 8 through the microporous shunt unit 9. The microporous shunt unit 9 shunts the exhaust gas to the high-temperature hollow plate 6, the medium-temperature hollow plate 7 and the low-temperature hollow plate 8 based on the temperature. The microporous shunt unit 9 includes a plurality of microporous tubes 91 fixedly plugged into the bottom of the air intake hollow plate 51, and a temperature detection probe 92 is installed on the tube wall of each microporous tube 91. The detection end of each temperature detection probe 92 is arranged on the inner side of the microporous tube 91 on the same side. Each microporous tube 91 is fixedly connected with a shunt hollow block 93. Each shunt hollow block 93 has a A high-temperature air outlet pipe 94, a medium-temperature air outlet pipe 95 and a low-temperature air outlet pipe 96 are fixedly connected at the bottom. An air outlet electric control valve 97 is installed inside the high-temperature air outlet pipe 94, the medium-temperature air outlet pipe 95 and the low-temperature air outlet pipe 96. The high-temperature air outlet pipe 94 is connected to the high-temperature hollow plate 6, the medium-temperature air outlet pipe 95 is connected to the medium-temperature hollow plate 7, and the low-temperature air outlet pipe 96 is connected to the low-temperature hollow plate 8. The control cabinet 2 controls the corresponding air outlet electric control valve 97 to work according to the strength of the electrical signal output by the temperature detection probe 92. Within a certain temperature range, the thermistor element of the temperature detection probe 92 has its own resistance reduced synchronously as the temperature increases, and the output electrical signal strength increases synchronously.

[0022] The three heat dissipation hollow plates 10 are all arranged below the low-temperature hollow plate 8. The high-temperature hollow plate 6, the medium-temperature hollow plate 7 and the low-temperature hollow plate 8 are all fixedly connected to the corresponding heat dissipation hollow plate 10 by a square tube 11. The three heat dissipation units 12 are all arranged at the three heat dissipation hollow plates 10, and the three heat dissipation hollow plates 10 are connected through the heat dissipation units 12. Each heat dissipation unit 12 includes a frame plate 121, and the frame plate 121 is fixedly connected to the side wall of the heat dissipation hollow plate 10 on the same side. A plurality of heat exchange tubes 122 are arranged on the inner side of the frame plate 121, and each heat dissipation unit 121 is connected to the heat dissipation hollow plate 10 on the same side. Each heat exchange tube 122 is connected to the heat dissipation hollow plate 10 on the same side, a mounting cover 123 is fixedly installed on the top of the frame plate 121, and a fixing sleeve 124 is installed on the top of the mounting cover 123, a hot air blower 125 is installed inside the fixing sleeve 124, a plurality of evenly distributed holes 126 connected to the mounting cover 123 are opened on the top of the frame plate 121, a plurality of heat dissipation tubes 127 are fixedly plugged at the bottom of the frame plate 121, the hot air blower 125 is electrically connected to the control cabinet 2, and the heating temperature of the hot air blower 125 can be adjusted and set through the control cabinet 2.

[0023] A heat accumulator 15 is provided on one side of the absorption tower 1. The lower end of each heat dissipation pipe 127 is fixedly connected to a transverse pipe 16, and the two ends of each transverse pipe 16 penetrate the side wall of the heat accumulator 15. The heat accumulator 15 can accumulate heat through a special heat storage medium for the convenience of reusing the heat.

[0024] A plurality of detection flow diversion units 13 are all connected to the heat dissipation unit 12 on the same side, and one of the air outlet ends of each detection flow diversion unit 13 is connected to the absorption tower 1, each detection flow diversion unit 13 includes an end plate 131, the end plate 131 is fixedly connected to the end of the frame plate 121 on the same side, a detection hollow block 132 is fixedly plugged into the side wall of the end plate 131, and each detection hollow block 132 is connected to the heat exchange tube 122 on the same side, an infrared emitter 133 is fixedly installed on the inner top of each detection hollow block 132, and a light probe 134 is fixedly installed on the inner wall of each detection hollow block 132 on the side opposite to the infrared emitter 133 on the same side, and an air supply probe 134 is fixedly plugged into the end of each detection hollow block 132 away from the heat exchange tube 122 on the same side Tube 135, and a normally open shunt solenoid valve 136 is installed inside the air supply pipe 135, a shunt discharge pipe 137 is fixedly inserted at a position between the normally open shunt solenoid valve 136 and the detection hollow block 132 on the same side on the pipe wall of the air supply pipe 135, and a normally closed shunt solenoid valve 138 is installed inside the shunt discharge pipe 137, each air supply pipe 135 is connected to the interior of the absorption tower 1, the infrared transmitter 133 is electrically connected to the control cabinet 2, the control cabinet 2 controls the corresponding normally open shunt solenoid valve 136 and the normally closed shunt solenoid valve 138 to work according to the electrical signal output by the light probe 134, the light probe 134 can receive the infrared rays emitted by the infrared transmitter 133, and based on the change in the intensity of the infrared rays, its own resistance also changes synchronously.

[0025] The metering warning component 14 includes a hollow column 141 fixedly connected to the liquid outlet end of the delivery pump 35, and a liquid flow meter 142 is installed on the side wall of the hollow column 141, and the detection end of the liquid flow meter 142 is arranged inside the hollow column 141, and a normally open proportional solenoid valve 143 is installed inside the liquid outlet end of the delivery pump 35. A U-shaped tube 144 is fixedly inserted at a position below the normally open proportional solenoid valve 143 on the tube wall of the liquid outlet end of the delivery pump 35, and the U-shaped tube 144 is connected to the liquid inlet pipe 36, and the liquid inlet pipe 36 is connected to the interior of the hollow column 141, and a normally closed proportional solenoid valve 145 is installed inside the U-shaped tube 144. The liquid flow meter 142 is electrically connected to the control cabinet 2, and each light probe 134 is electrically connected to the normally closed proportional solenoid valve 145 and the normally open proportional solenoid valve 143 through the control cabinet 2. The liquid flow meter 142 can detect that the liquid flow reaches the set value and then feedback an electrical signal to the control cabinet 2.

[0026] The operating principle of the present invention is now explained as follows: the tail gas pipe of the high-temperature exhaust gas treatment system is connected to the high-temperature exhaust gas inlet pipe 52. The high-temperature exhaust gas generated after the high-temperature exhaust gas is treated by the exhaust gas treatment system will enter the interior of the air intake hollow plate 51 through the high-temperature exhaust gas inlet pipe 52, and be diverted and discharged through each microporous tube 91. The microporous tube 91 can divide the high-temperature exhaust gas into multiple airflows. After each airflow enters the corresponding diversion hollow block 93, the temperature detection probe 92 in each microporous tube 91 will detect the temperature of the airflow. When the airflow temperature is below 80°C, the electrical signal strength fed back by the temperature detection probe 92 to the control cabinet 2 is less than 10 mA. At this time, the control cabinet 2 will control the low-temperature outlet The outlet electric control valve 97 inside the air pipe 96 is powered on and opened, and then the airflow will enter the low-temperature hollow plate 8 through the diverter hollow block 93 and the low-temperature outlet pipe 96. When the airflow temperature is in the range of 80°C to 170°C, the electrical signal fed back by the temperature detection probe 92 to the control cabinet 2 is in the range of 10 mA to 15 mA. At this time, the control cabinet 2 will control the outlet electric control valve 97 in the medium-temperature outlet pipe 95 to be powered on and opened, and the airflow will enter the medium-temperature hollow plate 7. When the airflow temperature is higher than 170°C, the electrical signal strength fed back by the temperature detection probe 92 to the control cabinet 2 is greater than 15 mA. At this time, the outlet electric control valve 97 in the high-temperature outlet pipe 94 is powered on and opened, and the airflow enters the high-temperature hollow plate 6. The airflow entering the high-temperature hollow plate 6, the medium-temperature hollow plate 7 and the low-temperature hollow plate 8 will enter the corresponding heat dissipation hollow plate 10 through the corresponding square tube 11, and flow out through each heat exchange tube 122. Since the high-temperature hollow plate 6 is farthest from the absorption tower 1, the high-temperature exhaust gas discharged through the high-temperature hollow plate 6 needs to pass through the three heat dissipation hollow plates 10 and each heat exchange tube 122 in sequence, so its flow distance is the longest, the flow distance of the airflow discharged from the medium-temperature hollow plate 7 is second, and the flow distance of the airflow discharged from the low-temperature hollow plate 8 is the shortest. When the exhaust gas is processed, the control cabinet 2 will control the three hot air blowers 125 to work (the heating temperature of the hot air blower 125 is determined according to the temperature of the exhaust gas). The absorbent used is required to be set. Taking monoethanolamine absorbent as an example, the heating temperature is 40℃±2℃). The hot air blower 125 will deliver airflow to the inside of the same side frame plate 121. After the airflow contacts the heat exchange tube 122 inside the frame plate 121, it can exchange heat with the high-temperature exhaust gas flowing through the heat exchange tube 122, so that the high-temperature exhaust gas gradually cools down, thereby avoiding the exhaust gas entering the absorption tower 1 being too high to cause the absorbent to volatilize, affecting the absorption effect of carbon dioxide. Secondly, since the airflows of different temperatures are cooled in different zones, it can ensure that the airflows with high temperatures are fully cooled, thereby improving the accuracy of exhaust gas temperature control; When the airflow is discharged through the heat exchange tube 122 on the side closest to the absorption tower 1, it will enter the corresponding detection hollow block 132, and the infrared emitter 133 inside each detection hollow block 132 will emit infrared rays of a specific wavelength, and carbon dioxide will absorb infrared rays. When the concentration of carbon dioxide is higher, more infrared rays are absorbed, and the light intensity received by the light probe 134 is lower at this time. At this time, the photosensitive element inside the light probe 134 cannot obtain sufficient light intensity, so the resistance of the photosensitive element is relatively large. At this time, the connection loop resistance between the measurement circuit of the control cabinet 2 and the photosensitive element of the light probe 134 is relatively large, and the measurement circuit of the control cabinet 2 measures that the current intensity of the connection loop is less than 18 mA. When the concentration of carbon dioxide is lower than 0.05%, since less infrared rays are absorbed, the photosensitive element of the light probe 134 can obtain sufficient light intensity. At this time, the measurement circuit of the control cabinet 2 measures that the current intensity of the connection loop with the photosensitive element of the light probe 134 is greater than 18 mA. When the current intensity of the connection loop of the photosensitive element of the light probe 134 is greater than 1 When the voltage is 8 mA, the control cabinet 2 will control the normally closed shunt solenoid valve 138 and the normally open shunt solenoid valve 136 to be energized. At this time, the airflow will be directly discharged through the detection hollow block 132, the air supply pipe 135 and the shunt discharge pipe 137. Since the carbon dioxide in the airflow and the carbon dioxide in the air (generally 0.04%) are slightly different at this time, the direct discharge of this part of the airflow will not affect the atmospheric environment. When the carbon dioxide concentration is higher than 0.05%, the carbon dioxide-containing airflow directly enters the absorption tower 1 through the air supply pipe 135 (wherein, since each heat exchange tube 122 can separate the airflow into multiple tiny airflows, and affected by the production process, airflow flow, etc., the carbon dioxide in the exhaust gas is not evenly distributed in the airflow, so there will be a part of the airflow with a low carbon dioxide concentration in the multiple tiny airflows that are separated. At this time, if this part is still passed into the absorption tower 1, the carbon dioxide concentration will be diluted, hindering the absorption of carbon dioxide by the absorbent. Therefore, by directly discharging this part of the airflow in advance, the concentration of carbon dioxide entering the absorption tower 1 is indirectly increased, and the utilization rate of the absorbent is improved); The delivery pump 35 can extract the absorbent (such as monoethanolamine) in the liquid storage tank 31, and deliver the absorbent to the inside of the hollow column 141 through the liquid outlet, and spray the absorbent from the spray assembly 34 through the liquid inlet pipe 36 (the spray assembly 34 includes a spray plate and a plurality of spray heads and other components, the spray plate is hollow inside, the spray head is installed at the bottom of the spray plate, and the spray plate is connected to the liquid inlet pipe 36), so as to cooperate with the packing layer 33 in the absorption tower 1 to absorb the carbon dioxide entering the absorption tower 1, and the absorbed and purified gas is discharged through the discharge hole 4 at the top of the absorption tower 1; Among them, when the concentration of carbon dioxide is higher, the light intensity received by the photosensitive elements of each light probe 134 becomes lower as a whole. At this time, the connection loop resistance of the photosensitive elements of each light probe 134 and the normally closed proportional solenoid valve 145 and the normally open proportional solenoid valve 143 becomes larger, so the current intensity passed into the normally open proportional solenoid valve 143 and the normally closed proportional solenoid valve 145 is reduced, and the greater the current passed into the normally open proportional solenoid valve 143, the greater the distance that the internal electromagnetic component attracts its own valve core to move, resulting in a smaller degree of opening of the valve hole, and the greater the current passed into the normally closed proportional solenoid valve 145, the greater the distance that the internal electromagnetic component attracts its own valve core to move, resulting in a larger degree of opening of the valve hole. Therefore, when the concentration of carbon dioxide inside each detection hollow block 132 is higher, the current intensity passed into the normally open proportional solenoid valve 143 and the normally closed proportional solenoid valve 145 is smaller. At this time, the normally open proportional solenoid valve 14 3 is opened more, and the normally closed proportional solenoid valve 145 is opened less, so more absorbent will pass through the hollow column 141, so that more absorbent passes through the detection end of the liquid flow meter 142, and the metering speed of the liquid flow meter 142 is accelerated. Since the higher the carbon dioxide concentration, the faster the absorbent is consumed, and at this time the metering speed of the liquid flow meter 142 will also be accelerated synchronously, so the metering value of the liquid flow meter 142 can reflect the degree of absorbent consumption. When the flow measured by the liquid flow meter 142 reaches the threshold value (the threshold value can be set according to the type of absorbent used, the storage capacity of the liquid storage tank 31, etc.), the liquid flow meter 142 will feedback an electrical signal to the control cabinet 2. At this time, the control cabinet 2 will remind relevant personnel through its own alarm module (for example, sending alarm information by wireless communication, etc.), and the relevant personnel should desorb and regenerate the absorbent in time; Among them, the high-temperature airflow delivered by each hot air blower 125 after heat exchange with the high-temperature exhaust gas will enter the inside of the cross pipe 16 through the heat dissipation pipe 127 and be discharged through the cross pipe 16. When the high-temperature airflow passes through the inside of the cross pipe 16, it will exchange heat with the heat storage medium inside the heat accumulator 15 (the heat accumulator 15 stores water storage media such as water liquid for storing heat), so that heat can be accumulated. People can reuse the heat through the heat accumulator 15. For example, when the absorbent is desorbed and regenerated, the heat of the heat accumulator 15 can be used to heat the absorbent (the medium with accumulated heat is extracted by a pump, and heat is exchanged with the absorbent through a special pipeline, so that the absorbent can be heated, assisting the regeneration of the absorbent and reducing the waste of heat energy).

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-carbon treatment device for environmental protection engineering construction, comprising an absorption tower (1) and a control cabinet (2) arranged on one side of the absorption tower (1), the absorption tower (1) being equipped with a spray absorption mechanism (3), and a discharge hole (4) being provided at the top of the absorption tower (1), characterized in that: Also includes: An air intake unit (5) is arranged on one side of the absorption tower (1), and a high-temperature hollow plate (6), a medium-temperature hollow plate (7) and a low-temperature hollow plate (8) are arranged below the air intake unit (5), and the distances between the high-temperature hollow plate (6), the medium-temperature hollow plate (7) and the low-temperature hollow plate (8) and the absorption tower (1) are from far to near; A microporous flow diversion unit (9) is installed at the bottom of the air intake unit (5); the air intake unit (5) is connected to the high-temperature hollow plate (6), the medium-temperature hollow plate (7) and the low-temperature hollow plate (8) through the microporous flow diversion unit (9); the microporous flow diversion unit (9) diverts the exhaust gas to the high-temperature hollow plate (6), the medium-temperature hollow plate (7) and the low-temperature hollow plate (8) based on the temperature; The three heat dissipation hollow plates (10) are all arranged below the low-temperature hollow plate (8); the high-temperature hollow plate (6), the medium-temperature hollow plate (7) and the low-temperature hollow plate (8) are all fixedly connected to the corresponding heat dissipation hollow plate (10) via a square tube (11); Three heat dissipation units (12) are each arranged at three heat dissipation hollow plates (10), and the three heat dissipation hollow plates (10) are connected via the heat dissipation units (12); The plurality of detection flow diversion units (13) are all connected to the heat dissipation unit (12) on the same side, and one of the gas outlet ends of each detection flow diversion unit (13) is connected to the absorption tower (1).

2. A low-carbon treatment device for environmental protection engineering construction according to claim 1, characterized in that: The spray absorption mechanism (3) comprises a liquid storage tank (31) arranged on one side of the absorption tower (1); a pumping assembly (32) is arranged between the liquid storage tank (31) and the lower end of the side wall of the absorption tower (1); a packing layer (33) and a spraying assembly (34) are installed inside the absorption tower (1); a delivery pump (35) is fixedly installed on the side wall of the liquid storage tank (31); a liquid inlet pipe (36) is installed at the liquid inlet end of the spraying assembly (34); a metering and early warning assembly (14) is arranged between the delivery pump (35) and the liquid inlet pipe (36); the control cabinet (2) controls the metering and early warning assembly (14) to work according to the electrical signals output by each detection and diversion unit (13); and the pumping assembly (32) and the delivery pump (35) are both electrically connected to the control cabinet (2).

3. A low-carbon treatment device for environmental protection engineering construction according to claim 1, characterized in that: The air intake unit (5) comprises an air intake hollow plate (51) arranged on one side of the absorption tower (1), and a high-temperature exhaust gas inlet pipe (52) is fixedly plugged into the end surface of the air intake hollow plate (51).

4. A low-carbon treatment device for environmental protection engineering construction according to claim 3, characterized in that: The microporous flow diversion unit (9) comprises a plurality of microporous tubes (91) fixedly plugged into the bottom of the air inlet hollow plate (51), and a temperature detection probe (92) is installed on the tube wall of each microporous tube (91), and the detection end of each temperature detection probe (92) is arranged on the inner side of the microporous tube (91) on the same side, and each microporous tube (91) is fixedly connected to a diversion hollow block (93), and the bottom of each diversion hollow block (93) is fixedly plugged with a high-temperature outlet pipe (94), a medium-temperature outlet pipe (95) and a low-temperature outlet pipe (96). The high-temperature gas outlet pipe (96) is provided with a gas outlet electric control valve (97) installed inside the high-temperature gas outlet pipe (94), the medium-temperature gas outlet pipe (95) and the low-temperature gas outlet pipe (96). The high-temperature gas outlet pipe (94) is connected to the high-temperature hollow plate (6), the medium-temperature gas outlet pipe (95) is connected to the medium-temperature hollow plate (7), and the low-temperature gas outlet pipe (96) is connected to the low-temperature hollow plate (8). The control cabinet (2) controls the operation of the corresponding gas outlet electric control valve (97) according to the strength of the electrical signal output by the temperature detection probe (92).

5. A low-carbon treatment device for environmental protection engineering construction according to claim 2, characterized in that: Each of the heat dissipation units (12) comprises a frame plate (121), and the frame plate (121) is fixedly connected to the side wall of the heat dissipation hollow plate (10) on the same side; a plurality of heat exchange tubes (122) are arranged on the inner side of the frame plate (121), and each heat exchange tube (122) is connected to the heat dissipation hollow plate (10) on the same side; a mounting cover (123) is fixedly installed on the top of the frame plate (121), and a fixing sleeve (124) is installed on the top of the mounting cover (123); a hot air blower (125) is installed inside the fixing sleeve (124); a plurality of equally distributed holes (126) connected to the mounting cover (123) are opened on the top of the frame plate (121); a plurality of heat dissipation tubes (127) are fixedly plugged on the bottom of the frame plate (121); and the hot air blower (125) is electrically connected to the control cabinet (2).

6. A low-carbon treatment device for environmental protection engineering construction according to claim 5, characterized in that: Each of the detection flow diversion units (13) comprises an end plate (131), the end plate (131) being fixedly connected to an end of the frame plate (121) on the same side, a detection hollow block (132) being fixedly plugged into a side wall of the end plate (131), and each of the detection hollow blocks (132) being connected to the heat exchange tube (122) on the same side, an infrared emitter (133) being fixedly mounted on the inner top of each of the detection hollow blocks (132), and a light probe (134) being fixedly mounted on the inner wall of each of the detection hollow blocks (132) on a side opposite to the infrared emitter (133) on the same side, and an air supply pipe (134) being fixedly plugged into an end of each of the detection hollow blocks (132) away from the heat exchange tube (122) on the same side. 35), and a normally open shunt solenoid valve (136) is installed inside the air supply pipe (135), a shunt discharge pipe (137) is fixedly inserted into the pipe wall of the air supply pipe (135) at a position between the normally open shunt solenoid valve (136) and the detection hollow block (132) on the same side, and a normally closed shunt solenoid valve (138) is installed inside the shunt discharge pipe (137), each of the air supply pipes (135) is connected to the inside of the absorption tower (1), the infrared emitter (133) is electrically connected to the control cabinet (2), and the control cabinet (2) controls the corresponding normally open shunt solenoid valve (136) and the normally closed shunt solenoid valve (138) to work according to the electrical signal output by the light probe (134).

7. A low-carbon treatment device for environmental protection engineering construction according to claim 6, characterized in that: The metering warning component (14) comprises a hollow column (141) fixedly connected to the liquid outlet of the delivery pump (35), and a liquid flow meter (142) is installed on the side wall of the hollow column (141), and the detection end of the liquid flow meter (142) is arranged inside the hollow column (141), and a normally open proportional solenoid valve (143) is installed inside the liquid outlet of the delivery pump (35), and a pipe wall of the liquid outlet of the delivery pump (35) is located below the normally open proportional solenoid valve (143) and is fixedly inserted into the liquid outlet of the delivery pump (35). A U-shaped tube (144) is connected, and the U-shaped tube (144) is connected to the liquid inlet tube (36), the liquid inlet tube (36) is connected to the interior of the hollow column (141), a normally closed proportional solenoid valve (145) is installed inside the U-shaped tube (144), the liquid flow meter (142) is electrically connected to the control cabinet (2), and each of the light probes (134) is electrically connected to the normally closed proportional solenoid valve (145) and the normally open proportional solenoid valve (143) through the control cabinet (2).

8. A low-carbon treatment device for environmental protection engineering construction according to claim 5, characterized in that: A heat accumulator (15) is provided on one side of the absorption tower (1), the lower end of each of the heat dissipation pipes (127) is fixedly connected to a transverse pipe (16), and both ends of each transverse pipe (16) penetrate the side wall of the heat accumulator (15).

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