A low-carbon treatment device for environmental protection engineering construction

Abstract

The present 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, including 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, and a discharge hole is opened at the top of the absorption tower. It further includes: an intake unit, which is arranged on one side of the absorption tower. Below the intake unit, there are a high-temperature hollow plate, a medium-temperature hollow plate, and a low-temperature hollow plate, 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. The present invention can absorb and remove carbon dioxide in the tail gas, contribute to environmental protection and low-carbon construction, can fully cool the high-temperature tail gas, improve the heat dissipation and cooling efficiency, prevent high temperature from interfering with the efficacy of the absorbent and causing the volatilization of the absorbent, and at the same time can discharge the air with low-concentration carbon dioxide in advance, improving the carbon dioxide concentration and absorbent utilization rate in the absorption tower.

Description

Technical Field

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

[0002] Currently, there are various methods for treating carbon dioxide in high-temperature tail gas. The common method is to spray a special absorbent through an absorption tower to carry out an adsorption reaction on carbon dioxide to remove carbon dioxide, or to contact a special absorbent material with the tail gas to absorb carbon dioxide. For example, a low-carbon treatment device for environmental protection engineering construction disclosed in the patent publication number CN217829520U;

[0003] In the high-temperature waste gas treatment process, the high-temperature waste gas carries a large amount of heat. When continuously inputting high-temperature waste gas into the waste gas treatment system, the heat exchange and cooling capabilities of the waste gas transmission pipeline and each waste gas treatment unit are limited, resulting in the temperature of the finally discharged tail gas still being relatively high. In such a high-temperature environment, taking a common absorbent such as monoethanolamine as an example, its molecular thermal motion intensifies and the volatilization speed increases significantly. On the one hand, the number of effective absorbents participating in the carbon dioxide absorption reaction decreases, directly reducing the absorption efficiency of carbon dioxide. On the other hand, the absorbents volatilized into the atmosphere may cause secondary pollution to environmental elements such as the surrounding air and soil. Summary of the Invention

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

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A low-carbon treatment device for environmental protection engineering construction includes 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, and a discharge hole is opened at the top of the absorption tower. It further includes:

[0006] An air intake unit, arranged on one side of the absorption tower. Below the air intake unit, there are a high-temperature hollow plate, a medium-temperature hollow plate, and a low-temperature hollow plate, 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;

[0007] A microporous shunt unit, installed at the bottom of the air intake unit. The air intake unit is connected to the high-temperature hollow plate, the medium-temperature hollow plate, and the low-temperature hollow plate through the microporous shunt unit, and the microporous shunt unit shunts the tail gas into the high-temperature hollow plate, the medium-temperature hollow plate, and the low-temperature hollow plate based on the temperature;

[0008] Three heat dissipation hollow plates, all arranged below the low-temperature hollow plate. The high-temperature hollow plate, the medium-temperature hollow plate, and the low-temperature hollow plate are fixedly connected and communicated with the corresponding heat dissipation hollow plates by square pipes;

[0009] Three heat dissipation units are all arranged at three heat dissipation hollow plates, and the three heat dissipation hollow plates are connected and communicated through the heat dissipation units;

[0010] Multiple detection and shunt units are all connected and communicated with the heat dissipation units on the same side, and one of the air outlet ends of each detection and shunt unit is connected and communicated with the absorption tower.

[0011] Preferably, the spray absorption mechanism includes a liquid storage tank arranged on one side of the absorption tower. A pump extraction 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 warning assembly is arranged between the delivery pump and the liquid inlet pipe. The control cabinet controls the operation of the metering and warning assembly according to the electrical signals output by each detection and shunt unit. The pump extraction assembly and the delivery pump are both electrically connected to the control cabinet.

[0012] Preferably, the air inlet unit includes an air inlet hollow plate arranged on one side of the absorption tower, and a high-temperature tail gas inlet pipe is fixedly inserted into the end face of the air inlet hollow plate.

[0013] Preferably, the micro-hole shunt unit includes a plurality of micro-hole pipes fixedly inserted at the bottom of the air inlet hollow plate. Temperature detection probes are installed on the pipe walls of each micro-hole pipe, and the detection ends of each temperature detection probe are arranged inside the micro-hole pipe on the same side. Each micro-hole pipe is fixedly communicated with a shunt hollow block. High-temperature air outlet pipes, medium-temperature air outlet pipes and low-temperature air outlet pipes are fixedly inserted at the bottom of each shunt hollow block. Air outlet electric control valves are 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 and communicated with the high-temperature hollow plate. The medium-temperature air outlet pipe is connected and communicated with the medium-temperature hollow plate. The low-temperature air outlet pipe is connected and communicated with the low-temperature hollow plate. The control cabinet controls the operation of the corresponding air outlet electric control valve according to the intensity of the electrical signals output by the temperature detection probes.

[0014] Preferably, each heat dissipation unit 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 pipes are arranged inside the frame plate, and each heat exchange pipe is connected and communicated with the heat dissipation hollow plate on the same side. An installation cover is fixedly installed on the top of the frame plate, and a fixed sleeve is installed on the top of the installation cover. A hot air blower is installed inside the fixed sleeve. A plurality of equalizing holes communicating with the installation cover are opened on the top of the frame plate. A plurality of heat dissipation pipes are fixedly inserted at the bottom of the frame plate. The hot air blower is electrically connected to the control cabinet.

[0015] Preferably, each of the detection and shunt units includes an end plate, the end plate is fixedly connected to the end of the frame plate on the same side, a detection hollow block is fixedly inserted into the side wall of the end plate, and each detection hollow block communicates with 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. A gas supply pipe is fixedly inserted into one end of each detection hollow block away from the heat exchange tube on the same side, and a normally open shunt solenoid valve is installed inside the gas supply pipe. A shunt discharge pipe is fixedly inserted into the pipe wall of the gas supply pipe at a position between the normally open shunt solenoid valve and the detection hollow block on the same side, and a normally closed shunt solenoid valve is installed inside the shunt discharge pipe. Each gas supply pipe communicates with the inside of the absorption tower. The infrared emitter is electrically connected to the control cabinet, and the control cabinet controls the corresponding normally open shunt solenoid valve and normally closed shunt solenoid valve to work according to the electrical signal output by the light probe.

[0016] Preferably, the metering and warning component includes a hollow column fixedly communicated with the liquid outlet end of the delivery pump, a liquid flow meter is installed on the side wall of the hollow column, and 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 pipe is fixedly inserted into the pipe wall of the liquid outlet end of the delivery pump at a position below the normally open proportional solenoid valve, and the U-shaped pipe communicates with the liquid inlet pipe. The liquid inlet pipe communicates with the inside of the hollow column. A normally closed proportional solenoid valve is installed inside the U-shaped pipe. The liquid flow meter is electrically connected to the control cabinet, and each light probe is electrically connected to the normally closed proportional solenoid valve and the normally open proportional solenoid valve through the control cabinet.

[0017] Preferably, a heat accumulator is arranged on one side of the absorption tower. The lower ends of the heat dissipation pipes are fixedly communicated with transverse pipes, and both pipe ends of each transverse pipe penetrate through the side wall of the heat accumulator.

[0018] Compared with the existing technology, the advantages of a low-carbon treatment device for environmental protection project construction are as follows:

[0019] Through the mutual cooperation of the absorption tower, the control cabinet, the spray absorption mechanism and the discharge holes, the carbon dioxide in the tail gas entering the absorption tower can be absorbed and removed, so as to avoid the direct discharge of carbon dioxide in the tail gas affecting the environment and contribute to environmental protection and low-carbon construction. And through the mutual cooperation of the air inlet unit, the high-temperature hollow plate, the medium-temperature hollow plate, the low-temperature hollow plate, the micro-hole shunt unit, the three heat dissipation hollow plates and the three heat dissipation units, by micro-hole shunting the high-temperature tail gas and automatically regulating the distribution of the tail gas at different temperatures based on the temperature of each shunted tail gas, it is ensured that the high-temperature tail gas can be fully cooled, and the heat dissipation and cooling efficiency can be improved, so that the temperature of the tail gas entering the absorption tower can maintain good stability, thereby avoiding the high temperature affecting the absorption effect of the absorbent on carbon dioxide and causing the volatilization of the absorbent.

[0020] Through the provided detection and diversion unit, the tail gas after cooling can be diverted and detected, and the air with a 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.

[0021] Through the provided metering and warning component, based on the detection result of the detection and diversion unit, it can automatically and timely remind the personnel to replace the absorbent, avoid the influence on the carbon dioxide removal rate due to the poor absorption performance of the absorbent, and ensure the low-carbon treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a low-carbon treatment device for environmental protection engineering construction provided by the present invention;

[0023] Figure 2 is a schematic internal structural diagram of the absorption tower of a low-carbon treatment device for environmental protection engineering construction provided by the present invention;

[0024] Figure 3 is a schematic structural diagram of the heat dissipation unit of a low-carbon treatment device for environmental protection engineering construction provided by the present invention;

[0025] Figure 4 is a schematic structural diagram of the microporous diversion unit of a low-carbon treatment device for environmental protection engineering construction provided by the present invention;

[0026] Figure 5 is a low-carbon treatment device for environmental protection engineering construction provided by the present invention Figure 3 partial enlarged view of structure A therein;

[0027] Figure 6 is a schematic structural diagram of the metering and warning component of a low-carbon treatment device for environmental protection engineering construction provided by the present invention.

[0028] In the figure: 1 absorption tower, 2 control cabinet, 3 spray absorption mechanism, 31 liquid storage tank, 32 pump extraction assembly, 33 packing layer, 34 spray assembly, 35 delivery pump, 36 liquid inlet pipe, 4 discharge hole, 5 intake unit, 51 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 micro-hole shunt unit, 91 micro-hole pipe, 92 temperature detection probe, 93 shunt hollow block, 94 high-temperature gas outlet pipe, 95 medium-temperature gas outlet pipe, 96 low-temperature gas outlet pipe, 97 gas outlet electric control valve, 10 heat dissipation hollow plate, 11 square pipe, 12 heat dissipation unit, 121 frame plate, 122 heat exchange pipe, 123 installation cover, 124 fixing sleeve, 125 hot air blower, 126 equalizing hole, 127 heat dissipation pipe, 13 detection and shunt unit, 131 end plate, 132 detection hollow block, 133 infrared emitter, 134 light probe, 135 air delivery pipe, 136 normally open shunt solenoid valve, 137 shunt discharge pipe, 138 normally closed shunt solenoid valve, 14 metering and warning assembly, 141 hollow column, 142 liquid flowmeter, 143 normally open proportional solenoid valve, 144 U-shaped pipe, 145 normally closed proportional solenoid valve, 15 heat accumulator, 16 horizontal pipe. Detailed implementation manner

[0029] 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.

[0030] As Figures 1-6 shown, an environmental protection engineering construction low-carbon treatment device includes an absorption tower 1 and a control cabinet 2 provided on one side of the absorption tower 1. The absorption tower 1 is equipped with a spray absorption mechanism 3. A discharge hole 4 is opened at the top of the absorption tower 1. The spray absorption mechanism 3 includes a liquid storage tank 31 provided on one side of the absorption tower 1. A pump extraction assembly 32 is provided 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. A metering and warning assembly 14 is provided between the delivery pump 35 and the liquid inlet pipe 36. The control cabinet 2 controls the operation of the metering and warning assembly 14 according to the electrical signals output by each detection and shunt unit 13. The pump extraction assembly 32 and the delivery pump 35 are both electrically connected to the control cabinet 2. The pump extraction assembly 32 includes components such as a liquid extraction pump and a pumping pipe, and can pump the absorbent generated by spraying at the lower side inside the absorption tower 1 back to the liquid storage tank 31. The liquid storage tank 31 is provided with a liquid addition pipe, through which absorbent can be supplemented into the liquid storage tank 31. The liquid storage tank 31 is also provided with a liquid discharge pipe, which is convenient for desorbing and regenerating the absorbent. The carbon dioxide generated by desorption and regeneration can be collected and reused.

[0031] The intake unit 5 is arranged on one side of the absorption tower 1. Below the intake unit 5, there are a high-temperature hollow plate 6, a medium-temperature hollow plate 7, and a low-temperature hollow plate 8. 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 intake unit 5 includes an intake hollow plate 51 arranged on one side of the absorption tower 1, and a high-temperature tail gas inlet pipe 52 is fixedly inserted into the end face of the intake hollow plate 51.

[0032] The microporous shunt unit 9 is installed at the bottom of the intake unit 5. The 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 shunt unit 9. The microporous shunt unit 9 shunts the tail gas into 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 inserted at the bottom of the intake hollow plate 51. Temperature detection probes 92 are installed on the tube walls of each microporous tube 91. The detection ends of each temperature detection probe 92 are arranged inside the microporous tube 91 on the same side. Each microporous tube 91 is fixedly connected to a shunt hollow block 93. At the bottom of each shunt hollow block 93, a high-temperature gas outlet pipe 94, a medium-temperature gas outlet pipe 95, and a low-temperature gas outlet pipe 96 are fixedly inserted. Gas outlet electric control valves 97 are 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 corresponding gas outlet electric control valve 97 to work according to the intensity of the electric signal output by the temperature detection probe 92. In a certain temperature range, as the temperature increases, the resistance of the thermosensitive element of the temperature detection probe 92 decreases synchronously, and the intensity of the output electric signal increases synchronously.

[0033] 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 fixedly connected to the corresponding heat dissipation hollow plates 10 through square tubes 11. 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 inside the frame plate 121, and each heat exchange tube 122 is connected to the heat dissipation hollow plate 10 on the same side. An installation cover 123 is fixedly installed on the top of the frame plate 121, and a fixed sleeve 124 is installed on the top of the installation cover 123. A hot air blower 125 is installed inside the fixed sleeve 124. A plurality of equalizing holes 126 communicating with the installation cover 123 are opened on the top of the frame plate 121. A plurality of heat dissipation tubes 127 are fixedly inserted 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.

[0034] On one side of the absorption tower 1, there is a heat accumulator 15. The lower ends of the respective heat dissipation tubes 127 are fixedly communicated with a horizontal tube 16, and both ends of each horizontal tube 16 penetrate through the side wall of the heat accumulator 15. The heat accumulator 15 can accumulate heat through a special heat storage medium for the reuse of heat.

[0035] A plurality of detection and shunt units 13 are all communicated with the heat dissipation unit 12 on the same side, and one of the air outlet ends of each detection and shunt unit 13 is communicated with the absorption tower 1. Each detection and shunt unit 13 includes an end plate 131, and 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 inserted into the side wall of the end plate 131, and each detection hollow block 132 is communicated with 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. One end of each detection hollow block 132 far from the heat exchange tube 122 on the same side is fixedly inserted with an air supply pipe 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 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 air supply pipe 135 is communicated with 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 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 emitter 133, and based on the change in the intensity of the infrared rays, its own resistance also changes synchronously.

[0036] The metering and warning assembly 14 includes a hollow column 141 fixedly communicated with the liquid outlet end of the delivery pump 35, and a liquid flowmeter 142 is installed on the side wall of the hollow column 141. The detection end of the liquid flowmeter 142 is arranged inside the hollow column 141. A normally open proportional solenoid valve 143 is installed inside the liquid outlet end of the delivery pump 35. A U-shaped pipe 144 is fixedly inserted into the pipe wall of the liquid outlet end of the delivery pump 35 at a position below the normally open proportional solenoid valve 143, and the U-shaped pipe 144 is communicated with the liquid inlet pipe 36. The liquid inlet pipe 36 is communicated with the inside of the hollow column 141. A normally closed proportional solenoid valve 145 is installed inside the U-shaped pipe 144. The liquid flowmeter 142 is electrically connected to the control cabinet 2. 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 flowmeter 142 can detect that the liquid flow reaches the set value and then feeds back an electrical signal to the control cabinet 2.

[0037] The operating principle of the present invention is described as follows: The tail gas pipe of the high-temperature waste gas treatment system is connected to the high-temperature tail gas inlet pipe 52. The high-temperature tail gas generated after the high-temperature waste gas is treated by the waste gas treatment system will enter the interior of the intake hollow plate 51 through the high-temperature tail gas inlet pipe 52 and be discharged through each microporous pipe 91 by shunting. The microporous pipe 91 can divide the high-temperature waste gas into multiple airflows. After each airflow enters the corresponding shunting hollow block 93, the temperature detection probe 92 in each microporous pipe 91 will detect the temperature of this airflow. When the airflow temperature is below 80°C, the intensity of the electrical signal fed back by the temperature detection probe 92 to the control cabinet 2 is less than 10 milliamperes. At this time, the control cabinet 2 will control the air outlet electric control valve 97 in the low-temperature outlet pipe 96 to be energized and opened. Subsequently, this airflow will enter the low-temperature hollow plate 8 through the shunting 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 milliamperes to 15 milliamperes. At this time, the control cabinet 2 will control the air outlet electric control valve 97 in the medium-temperature outlet pipe 95 to be energized and opened, and the airflow will enter the medium-temperature hollow plate 7. When the airflow temperature is higher than 170°C, the intensity of the electrical signal fed back by the temperature detection probe 92 to the control cabinet 2 is greater than 15 milliamperes. At this time, the air outlet electric control valve 97 in the high-temperature outlet pipe 94 is energized and opened, and the airflow enters the high-temperature hollow plate 6;

[0038] The airflows entering the interiors of 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 pipes 11 and flow out through each heat exchange tube 122. Since the high-temperature hollow plate 6 is the farthest from the absorption tower 1, the high-temperature tail gas discharged through the high-temperature hollow plate 6 needs to pass through three heat dissipation hollow plates 10 and each heat exchange tube 122 in sequence, so its flow path is the longest. The flow path of the airflow discharged from the medium-temperature hollow plate 7 is the second longest, and the flow path of the airflow discharged from the low-temperature hollow plate 8 is the shortest. When treating the tail gas, the control cabinet 2 will control the three hot air blowers 125 to operate (the heating temperature of the hot air blowers 125 is set according to the requirements of the absorbent used. Taking monoethanolamine absorbent as an example, the heating temperature is 40°C ± 2°C). The hot air blowers 125 will convey airflows into the interior of the same-side frame plate 121. After the airflows come into contact with the heat exchange tubes 122 inside the frame plate 121, they can exchange heat with the high-temperature tail gas flowing through the inside of the heat exchange tubes 122, causing the high-temperature tail gas to gradually cool down, thereby avoiding the excessive temperature of the tail gas entering the absorption tower 1 from causing the volatilization of the absorbent and affecting the absorption effect of carbon dioxide. Secondly, since the airflows at different temperatures are cooled in zones, it is possible to ensure that the airflows with relatively high temperatures are cooled sufficiently and improve the accuracy of tail gas temperature control;

[0039] When the air flow is discharged through the heat exchange tubes 122 closest to the side of the absorption tower 1, it will enter the corresponding detection hollow block 132. Inside each detection hollow block 132, an infrared emitter 133 will emit infrared rays of a specific wavelength. Carbon dioxide will absorb the infrared rays. When the concentration of carbon dioxide is higher, more infrared rays are absorbed. At this time, the light intensity received by the light detection probe 134 is lower. At this time, the photosensitive element inside the light detection probe 134 has a large resistance because it cannot obtain sufficient light intensity. At this time, the resistance of the connection circuit between the measurement circuit of the control cabinet 2 and the photosensitive element of the light detection probe 134 is large, and the measurement circuit of the control cabinet 2 measures that the current intensity of this connection circuit is lower than 18 milliamperes. When the concentration of carbon dioxide is lower than 0.05%, since less infrared rays are absorbed, the photosensitive element of the light detection probe 134 can obtain sufficient light intensity at this time. At this time, the measurement circuit of the control cabinet 2 measures that the current intensity of the connection circuit with the photosensitive element of the light detection probe 134 is greater than 18 milliamperes. When the current intensity of the connection circuit of the photosensitive element of the light detection probe 134 is greater than 18 milliamperes, 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 air flow will be directly discharged through the detection hollow block 132, the air supply pipe 135 and the shunt discharge pipe 137. Since the proportion of carbon dioxide in the air flow and the carbon dioxide in the air (generally 0.04%) is relatively small at this time, the direct discharge of this part of the air flow will not affect the atmospheric environment. When the concentration of carbon dioxide is higher than 0.05%, the carbon dioxide-containing air flow will directly enter the absorption tower 1 through the air supply pipe 135. (Among them, since each heat exchange tube 122 can separate the air flow into multiple tiny air flows, and due to production processes, air flow movement, etc., the carbon dioxide in the waste gas is not evenly distributed in the air flow. Therefore, there will be some air flows with a relatively low carbon dioxide concentration among the separated multiple tiny air flows. If this part is still introduced into the absorption tower 1 at this time, it will dilute the carbon dioxide concentration and hinder the absorption of carbon dioxide by the absorbent. Therefore, by directly discharging this part of the air flow in advance, the carbon dioxide concentration entering the absorption tower 1 is indirectly increased, and the utilization rate of the absorbent is improved);

[0040] The transfer pump 35 can pump out the absorbent (such as monoethanolamine) inside the liquid storage tank 31, transport the absorbent to the inside of the hollow column 141 through the liquid outlet end, and spray the absorbent from the spray component 34 through the liquid inlet pipe 36 (the spray component 34 includes components such as a spray plate and multiple spray heads. The inside of the spray plate is hollow, the spray heads are installed at the bottom of the spray plate, and the spray plate is communicated with the liquid inlet pipe 36). Thus, in cooperation with the packing layer 33 inside the absorption tower 1, the carbon dioxide entering the absorption tower 1 can be absorbed, and the gas purified by absorption is discharged through the discharge hole 4 at the top of the absorption tower 1;

[0041] Among them, when the concentration of carbon dioxide is higher, the overall illumination intensity received by the photosensitive elements of each light sensor 134 becomes lower. At this time, the resistance of the connection circuit between the photosensitive elements of each light sensor 134 and the normally closed proportional solenoid valve 145 and the normally open proportional solenoid valve 143 becomes larger. Therefore, the current intensity flowing into the normally open proportional solenoid valve 143 and the normally closed proportional solenoid valve 145 decreases. The greater the current flowing 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 opening degree of the valve hole. The greater the current flowing 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 opening degree of the valve hole. Therefore, when the carbon dioxide concentration in each detection hollow block 132 is higher, the current intensity flowing into the normally open proportional solenoid valve 143 and the normally closed proportional solenoid valve 145 is smaller. At this time, the opening degree of the normally open proportional solenoid valve 143 is larger, while the opening degree of the normally closed proportional solenoid valve 145 is smaller. Therefore, more absorbent will pass through the hollow column 141, so that more absorbent will pass through the detection end of the liquid flowmeter 142, and the measurement speed of the liquid flowmeter 142 will increase. Since the higher the carbon dioxide concentration, the faster the consumption degree of the absorbent, and at this time the measurement speed of the liquid flowmeter 142 will also increase synchronously. Therefore, the consumption degree of the absorbent can be reflected by the measurement value of the liquid flowmeter 142. When the flow rate measured by the liquid flowmeter 142 reaches the threshold value (this threshold value can be set according to the type of absorbent used, the storage capacity of the liquid storage tank 31, etc.), the liquid flowmeter 142 will send an electrical signal to the control cabinet 2. At this time, the control cabinet 2 will remind relevant personnel through its own alarm module (such as sending alarm information through wireless communication, etc.), and the relevant personnel should promptly carry out desorption and regeneration treatment on the absorbent;

[0042] Among them, the high-temperature air flow after heat exchange with the high-temperature exhaust gas delivered by each hot air blower 125 will enter the horizontal pipe 16 through the heat dissipation pipe 127 and be discharged through the horizontal pipe 16. When the high-temperature air flow passes through the inside of the horizontal pipe 16, it will exchange heat with the heat storage medium inside the heat accumulator 15 (the heat accumulator 15 stores water-based heat storage media such as water for storing heat), so that heat can be accumulated. Personnel can reuse the heat through the heat accumulator 15. For example, when carrying out desorption and regeneration treatment on the absorbent, the heat of the heat accumulator 15 can be used to heat the absorbent (by pumping out the medium that has accumulated heat through a pump and exchanging heat with the absorbent through a dedicated pipeline, so that the absorbent can be heated, assisting the regeneration treatment of the absorbent and reducing the waste of heat energy).

[0043] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall 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); 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 gas outlet ends of each detection flow diversion unit (13) is connected to the absorption tower (1); 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); 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); 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 at a position between the normally open shunt solenoid valve (136) and the detection hollow block (132) on the same side of 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 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); 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).

2. 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).

3. A low-carbon treatment device for environmental protection engineering construction according to claim 1, 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).

4. A low-carbon treatment device for environmental protection engineering construction according to claim 1, 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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