Purification treatment device for high-temperature waste gas heat energy recovery waste heat boiler

Abstract

The purification treatment device comprises the waste heat boiler, a water storage tank and an air inlet are arranged on the two sides of the waste heat boiler respectively, a water storage cavity is formed in the waste heat boiler, heat exchange pieces are arranged in the water storage cavity, one side of each heat exchange piece is connected with an air inlet pipeline, and the other side of each heat exchange piece is connected with an air outlet pipeline. The tail ends of the heat exchange pieces extend to the outer side of the waste heat boiler through pipelines and are in pipeline connection with the waste gas treatment assembly. According to the waste heat recovery device, the heat exchange pieces are arranged, heat of gas is transmitted to cold water through the heat exchange pieces, meanwhile, the guide plates are arranged in the heat exchange pieces, the contact area of waste gas and the heat exchange pieces is increased, and the heat is better recovered; waste gas is filtered through the filtering assemblies on the supporting cylinder I and the supporting cylinder II, the filtering assemblies make better contact with the waste gas through rotation of the supporting cylinder I and the supporting cylinder II, and the overall filtering effect of the filtering net is better utilized.

Description

Technical Field

[0001] The utility model belongs to the technical field of comprehensive utilization and treatment of high-temperature waste gas, and in particular relates to a purification treatment device for a waste heat boiler used to recover heat energy from high-temperature waste gas. Background Art

[0002] The comprehensive utilization of high-temperature exhaust gas mainly includes cooling treatment, pre-dust removal, deep purification and other steps. These steps are aimed at ensuring that the exhaust gas can be discharged safely after treatment and that the energy therein is recovered and utilized as much as possible.

[0003] After searching, a boiler heat recovery device with a publication number of CN117968086A in the prior art can perform preliminary filtration of smoke dust using an activated carbon filter inside the installation box, so that it is ejected through the second output port, and then complete the secondary filtration work through the second partition, and use the first output port to release the smoke dust. The design purpose of the above patent is to speed up the exhaust gas treatment speed. However, during the first preliminary filtration of activated carbon, there are more impurities in the smoke dust, which will cause the first activated carbon filter to be exposed to too much impurities, and the rear-end activated carbon plate is not fully utilized. The activated carbon filter plate cannot be used simultaneously for the two filtration operations. The first filter plate has a large workload and is quickly clogged by impurities.

[0004] After searching, it was found that in the prior art there is an exhaust gas combustion waste heat boiler system with announcement number CN219014355U. When the motor is working, the brush plate will brush the bottom of the filter plate, thereby causing the filter plate to vibrate, thereby preventing blockage. The purpose of the above document is to prevent the filter plate from being easily blocked and reduce the frequency of filter plate replacement. However, in a high-intensity working environment, the impurities filtered by the filter plate are vibrated, but the impurities will also fall between the lower exhaust gas inlet pipe and the filter plate. When the air is taken in by the intake pipe, some impurities will be driven to filter the gas. At the same time, the filter plate is connected to the vibration plate, the second spring and the guide rod. When the filter plate is replaced later, the filter plate, the second spring and the guide rod need to be disassembled, which increases the difficulty of replacement. Summary of the Invention

[0005] The purpose of the present utility model is to overcome the deficiencies in the prior art and provide a purification and treatment device for high-temperature exhaust gas heat energy recovery waste heat boiler, wherein exhaust gas treatment filter screens are arranged on both sides of the dual-axis motor to accelerate exhaust gas treatment, and at the same time, two layers of filter screens are arranged inside the treatment shell, which are respectively arranged on the support cylinder I and the support cylinder II, and finally the filtered gas is discharged through the exhaust pipe to reduce impurities in the exhaust gas, and at the same time, the exhaust gas first enters the treatment shell, and the exhaust gas surrounds the filter screen of the support cylinder I and the chamber between the treatment shell. As the amount of exhaust gas increases, the internal pressure becomes greater, so that the exhaust gas enters the second layer of the filter screen of the support cylinder II from the surface of the support cylinder I and contacts it, and surrounds the inside of the chamber between the support cylinder I and the support cylinder II again, and then enters the interior of the support cylinder II through the filter screen of the support cylinder II, and is finally discharged, so that the exhaust gas contacts the filter screen more evenly and the overall filtering effect of the filter screen is better utilized.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A purification treatment device for a waste heat boiler for recovering heat energy from high-temperature exhaust gas comprises a waste heat boiler, a water storage tank and an air inlet being provided on both sides of the waste heat boiler, a water storage chamber being provided inside the waste heat boiler, a heat exchanger being provided inside the water storage chamber, one side of the heat exchanger being connected to an air inlet pipe, and a rear end of the heat exchanger extending through a pipe to the outside of the waste heat boiler and connected to a waste gas treatment component pipe;

[0008] The exhaust gas treatment component includes a dual-axis motor, which is installed on a support frame. A treatment shell is provided on both sides of the support frame. The treatment shell is provided with a bearing seat near the dual-axis motor. The treatment shell is respectively provided with a support cylinder I and a support cylinder II. Support cylinder I and support cylinder II are provided with clamping rings of different diameters on both sides. Support cylinder I and support cylinder II are provided with a cross near the bearing seat. A circular plate is provided in the middle of the cross. A shaft connection groove is provided on the circular plate. The shaft connection groove is slidably connected with the rotating shaft on the corresponding side of the dual-axis motor. A cross is also provided on the side of support cylinder II away from the dual-axis motor. Filter components are provided around the outside of support cylinder I and support cylinder II. The rotating shaft on the side of the treatment shell away from the dual-axis motor is connected with a movable sealing door. An exhaust pipe is provided in the middle of the movable sealing door. The treatment shells are connected to the connecting pipe.

[0009] A water inlet is provided at the upper end of the water storage tank, and a water pump II is also provided inside the water storage tank, and a water outlet of the water pump II is connected to a water storage chamber pipeline.

[0010] The water storage chamber and the water tank are both connected to liquid level monitoring components, and the monitoring probes on the two liquid level monitoring components are used to monitor the liquid levels inside the water outlet chamber and the water tank respectively.

[0011] The heat exchange plate is wavy in shape, and a guide plate arranged in an eight-shaped shape is provided inside the heat exchange plate. The upper opening of the eight-shaped guide plate cooperates with the air inlet end to facilitate more uniform distribution.

[0012] Preferably, the water storage chamber pipe at the lower end of the waste heat boiler is connected to an insulation pipe assembly, a main switch valve is provided at the upper end of the insulation pipe assembly, a pipe connected to the water blowing chamber is provided on one side of the insulation pipe assembly, an electronic temperature control valve assembly is provided on the pipe, and a temperature sensing probe provided on the electronic temperature control valve assembly is arranged inside the water storage chamber pipe. The connecting pipes of the electronic temperature control valve assembly and the insulation pipe assembly are connected through a tee pipe, and a main switch valve is provided between the tee pipes.

[0013] Preferably, the movable sealing door is provided with a groove that cooperates with the snap rings on the support tube I and the support tube II, and the groove is in contact with the snap ring.

[0014] Preferably, a pressure relief valve is provided at the upper end of the water storage chamber.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) The heat in the exhaust gas is recovered into the liquid through the heat exchanger inside the waste heat boiler to complete the heat energy recovery. At the same time, the heat exchanger is equipped with an eight-shaped guide plate that matches the air intake direction, so that the exhaust gas contacts the heat exchanger more evenly, thereby increasing the heat recovery speed;

[0017] 2) An exhaust gas treatment component is provided, and a treatment shell is provided on both sides of the dual-axis motor of the exhaust gas treatment component. A support cylinder I and a support cylinder II are provided in the treatment shell. A filter is provided on each support cylinder I and support cylinder II to increase the exhaust gas treatment filter. At the same time, the exhaust gas enters the cavity between the treatment shell and the support cylinder I and moves around the side of the filter. The exhaust gas continuously enters and is pressurized. The exhaust gas enters the inner side through the filter on the support cylinder I, and then enters the chamber between the support cylinder I and the support cylinder II. Then, through pressurization, the filter on the support cylinder II is filtered again.

[0018] 3) At the same time, the diameter of support cylinder I is larger than that of support cylinder II, so that the filter area on support cylinder I is larger and the exhaust gas treatment capacity is increased. In this way, the replacement time of the outer filter of support cylinder I and the inner filter of support cylinder II are close, which is convenient for simultaneous replacement, reducing the situation where the outer filter is severely worn while the inner filter is not fully utilized, and opening the movable sealing door for replacement is synchronized, reducing the situation of frequent maintenance of the internal filter;

[0019] 4) An axis connection groove is provided in the middle of the cross on the support tube I and the support tube II, and the axis connection groove is slidably plugged into the output shaft on the dual-axis motor to facilitate the removal of the support tube I and the support tube II. A groove is provided on the movable sealing door to cooperate with the clamping ring on the support tube I and the support tube II. The groove contacts the clamping ring to facilitate the limiting and rotation direction guidance of the support tube I and the support tube II after closing the sealing door. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Attachment Figure 1This is a half-cutaway structural diagram of the utility model;

[0021] Attachment Figure 2 This is a schematic diagram of the explosion structure of the waste gas treatment component of the utility model;

[0022] Attachment Figure 3 This is a schematic diagram of the three-dimensional structure of a purification treatment device for high-temperature exhaust gas heat recovery waste heat boiler of the utility model;

[0023] Attachment Figure 4 This utility model Figure 2 The structure diagram of the provided A view;

[0024] Attachment Figure 5 This is a schematic diagram of the structure of the internal guide plate of the heat exchange plate provided by the utility model;

[0025] In the figure: 1. Water storage tank; 101. Water inlet; 102. Water pump II; 2. Waste heat boiler; 21. Water storage chamber; 23. Heat exchange fin; 231. Guide plate; 3. Air inlet; 4. Insulation pipe assembly; 5. Electronic temperature control valve assembly; 6. Exhaust gas treatment assembly; 61. Treatment shell; 62. Support cylinder I; 63. Support cylinder II; 64. Cross; 65. Snap ring; 66. Movable sealing door; 67. Connecting pipe; 68. Dual-axis motor; 7. Liquid level monitoring assembly. DETAILED DESCRIPTION

[0026] The present disclosure is described in detail below with reference to the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present disclosure, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in this field based on these embodiments are all within the scope of protection of the present disclosure.

[0027] To facilitate understanding by those skilled in the art, Figure 1-5 , the technical solution of the utility model is further described in detail.

[0028] A purification treatment device for a waste heat boiler for recovering heat energy from high-temperature exhaust gas, comprising a waste heat boiler 2, an insulation layer being provided on the outside of the waste heat boiler 2 to prevent heat loss, a water storage tank 1 and an air inlet 3 being provided on either side of the waste heat boiler 2, a water storage chamber 21 being provided inside the waste heat boiler 2, a heat exchange fin 23 being provided inside the water storage chamber 21, one side of the heat exchange fin 23 being connected to a pipe at the air inlet 3, the tail end of the heat exchange fin 23 extending through a pipe to the outside of the waste heat boiler 2 and being connected to a pipe at an exhaust gas treatment component 6;

[0029] See Figure 1 、 Figure 2 and Figure 4As shown, the exhaust gas treatment component 6 includes a dual-axis motor 68, and the dual-axis motor 68 model is a double-output shaft three-phase asynchronous motor of YZR225M-8. The dual-axis motor 68 is installed on a support frame, and a treatment shell 61 is provided on both sides of the support frame. The treatment shell 61 is provided with a bearing seat near the dual-axis motor 68, and a bearing is provided in the bearing seat. The treatment shell 61 is respectively provided with a support cylinder I 62 and a support cylinder II 63, and both sides of the support cylinder I 62 and the support cylinder II 63 are provided with a clamping ring 65 of different diameters. The support cylinder I 62 and the support cylinder II 63 are both provided with a cross 64 near the bearing seat. A circular plate is provided in the middle of 64, and an axis connection groove is provided on the circular plate. The axis connection groove is slidably connected with the rotating shaft on the corresponding side of the dual-axis motor 68. A cross 64 is also provided on the side of the support cylinder II 63 away from the dual-axis motor 68. The outer sides of the support cylinder I 62 and the support cylinder II 63 are surrounded by a filter assembly (filter mesh). The rotating shaft on the side of the annular processing shell 61 away from the dual-axis motor 68 is connected to a movable sealing door 66. An exhaust pipe is provided in the middle of the movable sealing door 66, and a locking assembly is provided on the movable sealing door 66 to prevent the movable sealing door 66 and the processing shell 61 from opening, affecting the internal filtering effect. The processing shell 61 is connected to the connecting pipe 67.

[0030] An air outlet is provided on the circular plate of the cross 64 on the side of the support cylinder II 63 close to the movable sealing door 66, and the air outlet cooperates with the exhaust pipe on the movable sealing door 66. A cross groove is provided on the circular plate of the cross 64 on the side of the support cylinder I 62 and the support cylinder II 63 away from the movable sealing door 66. The cross groove is slidably connected to the rotating shaft on the corresponding side of the cross extending from the dual-axis motor 68 to the inside of the processing shell 61.

[0031] See Figure 1 As shown, a water inlet 101 is provided at the upper end of the water tank 1 , and a water pump II 102 is further provided inside the water tank 1 . The water pump II 102 is selected as a centrifugal pump, and the water outlet of the water pump II 102 is connected to the water storage chamber 21 through a pipeline.

[0032] Further, combined Figure 1 and Figure 2 As shown, the water storage chamber 21 is connected to a liquid level monitoring component 7. The model of the liquid level monitoring component 7 is a static pressure immersion type liquid level transmitter. The sensor part of the immersion type static pressure liquid level transmitter, the monitoring probe, can be directly immersed in the liquid. The liquid level monitoring component 7 is electrically connected to the water pump II 102 and is used to control the start and stop of the water pump II 102.

[0033] Combine Figure 1 and Figure 5 As shown, the heat exchange plate 23 is wavy, and an eight-shaped guide plate 231 is provided inside the heat exchange plate 23. The upper end opening of the eight-shaped guide plate 231 cooperates with the air inlet end to facilitate more uniform distribution.

[0034] See Figure 1As shown, the water storage chamber 21 at the lower end of the waste heat boiler 2 is connected to the insulation pipe assembly 4, the upper end of the insulation pipe assembly 4 is provided with a main switch valve, and one side of the insulation pipe assembly 4 is provided with a pipe connected to the water blowing chamber, and an electronic temperature control valve assembly 5 is provided on the pipe. The model of the electronic temperature control valve assembly 5 is ZSLP electric temperature control valve. The connecting pipes of the electronic temperature control valve assembly 5 and the insulation pipe assembly 4 are connected through a three-way pipe, and a main switch valve is provided between the three-way pipes.

[0035] A pressure relief valve is provided at the upper end of the water storage chamber 21 .

[0036] The working principle of a purification treatment device for high-temperature exhaust gas heat recovery waste heat boiler is as follows:

[0037] When the boiler heat recovery device is in use, the air inlet 3 is connected to the exhaust pipe, and the external water supply device (not shown) is connected to the water inlet 101 pipe. Cold water is injected into the water storage tank 1, and the cold water enters the water storage chamber 21 through the water pump II 102. At the same time, the liquid level monitoring component 7 monitors the water level in the water storage chamber 21 through the monitoring probe. When cold water is injected into the water storage chamber 21, the liquid level monitoring component 7 detects that there is no water source in the water storage tank 1. The liquid level monitoring component 7 controls the external water supply device (external water pump) to supply water to the water storage tank 1 through the liquid level monitoring component 7, and the amount of water added to the internal source is sensed through the monitoring probe.

[0038] After the cold water enters the water storage chamber 21, the exhaust gas is transported to the heat exchange plate 23 through the air inlet 3. The gas passes through the heat exchange plate 23 to transfer heat to the cold water, and the heat is stored by the cold water. At the same time, when the exhaust gas enters the heat exchange plate 23, the exhaust gas is more evenly contacted with the heat exchange plate 23 over a large area through the internal guide plate 231, which better cooperates with the heat exchange plate 23 to transfer heat to the cold water. When the cold water is heated to a certain stability, it is monitored by the electronic temperature control valve assembly 5 to realize water discharge and transfer the hot water to the designated position. At the same time, the upper end liquid level monitoring assembly 7 monitors the internal water source to determine the start and stop of the water pump. At the same time, when the cold water in the water storage chamber 21 is heated to a certain temperature, gas will be generated, which will increase the internal pressure to prevent safety accidents. A pressure relief valve is provided at the upper end to reduce the risk of high-pressure explosion of the waste heat boiler 2.

[0039] After passing through the heat exchange plate 23, the exhaust gas is transported to the connecting pipe 67 through the air outlet. After being filtered by the exhaust gas treatment component 6, the exhaust gas is discharged to protect the environment. The working principle of the exhaust gas treatment component 6 is as follows: the dual-axis motor 68 is started, and the output shafts on both sides cooperate with the bearing seat of the processing shell 61, and the output shaft extends to the inside of the processing shell 61 and is clamped with the shaft connection groove on the cross 64 provided on the support cylinder I 62 and the support cylinder II 63, driving the two support cylinders to rotate, so that the filter components provided on the surfaces of the two support cylinders are in more uniform contact with the exhaust gas, thereby increasing the utilization rate of the filter components. After passing through the support cylinder, the exhaust gas enters the middle of the support cylinder and is discharged through the pipe provided on the movable sealing door 66;

[0040] When the filter assembly (activated carbon layer, etc.) needs to be replaced, open the movable sealing door 66, manually pull out the support cylinder I 62 and the support cylinder II 63, remove the filter assembly arranged on the outside of the support cylinder I 62 and the support cylinder II 63, cooperate with the staff to clean the internal chamber of the processing shell 61 to increase the filtering effect of the equipment, and install the new filter assembly to the outer annular surface of the support cylinder I 62 and the support cylinder II 63.

[0041] To sum up, electronic or electrical components such as, but not limited to, water pumps, electronic temperature control valve assemblies, dual-axis motors and liquid level monitoring assemblies are components in the prior art, obtained through private customization or purchase, and the electrical connections between the components are conventional electrical connections in the prior art and are not within the scope of protection of this utility model.

[0042] The above content is merely an example and explanation of the structure of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the scope of protection of the present invention.

Claims

1. A purification treatment device for a waste heat boiler for recovering heat energy from high-temperature exhaust gas, comprising a waste heat boiler, a water storage chamber disposed within the waste heat boiler, a heat exchanger disposed within the water storage chamber, one side of the heat exchanger connected to an air inlet pipe disposed on one side of the waste heat boiler, and characterized in that: The tail end of the heat exchanger is connected to the exhaust gas treatment component pipe through a pipe, and a water storage tank is provided on one side of the waste heat boiler; The water tank is provided with a water inlet at the upper end, and a water pump II is also provided inside the water tank, and the water outlet of the water pump II is connected to the water storage chamber pipeline; the water storage chamber is provided with a liquid level monitoring component, and the liquid level monitoring component is provided with a monitoring probe, which is installed inside the water storage chamber, and the liquid level monitoring component is electrically connected to the water pump II; the heat exchange plate is wavy, and a guide plate arranged in an eight-shaped shape is provided inside the heat exchange plate, and the upper end opening of the eight-shaped guide plate cooperates with the air inlet end; The exhaust gas treatment component includes a dual-axis motor, which is installed on a support frame, and a treatment shell is provided on both sides of the support frame, and the treatment shell is provided with a bearing seat near the dual-axis motor side, and the treatment shell is respectively provided with a support cylinder I and a support cylinder II, and support cylinder I and support cylinder II are provided with clamping rings of different diameters on both sides, and support cylinder I and support cylinder II are provided with a cross near the bearing seat side, a circular plate is provided in the middle of the cross, and a shaft connection groove is provided on the circular plate, and the shaft connection groove is slidably connected with the rotating shaft on the corresponding side of the dual-axis motor, and a cross is also provided on the side of support cylinder II away from the dual-axis motor, and a filter assembly is provided around the outside of support cylinder I and support cylinder II, and a movable sealing door is connected to the rotating shaft on the side of the treatment shell away from the dual-axis motor, and a groove is provided on the movable sealing door to cooperate with the clamping rings on support cylinder I and support cylinder II, and the groove is in contact with the clamping ring; an exhaust pipe is provided in the middle of the movable sealing door, and the treatment shells are connected to the connecting pipe; The exhaust gas first enters the treatment shell, and then surrounds the filter screen of support tube I and the chamber between the treatment shell. As the amount of exhaust gas increases, the internal pressure increases, causing the exhaust gas to enter the second layer of support tube II from the surface of support tube I and contact the filter screen, and then surround the inside of the chamber between support tube I and support tube II again, and then pass through the filter screen of support tube II into the interior of support tube II, and finally be discharged through the exhaust pipe provided in the middle of the movable sealing door.

2. The purification treatment device for high-temperature exhaust gas heat recovery waste heat boiler according to claim 1, characterized in that: The water storage chamber pipe at the lower end of the waste heat boiler is connected to an insulation pipe assembly, a main switch valve is provided at the upper end of the insulation pipe assembly, a pipe connected to the water blowing chamber is provided on one side of the insulation pipe assembly, an electronic temperature control valve assembly is provided on the pipe, and a temperature sensing probe provided on the electronic temperature control valve assembly is arranged inside the water storage chamber pipe. The connecting pipes provided with the electronic temperature control valve assembly and the insulation pipe assembly are connected by a tee pipe, and a main switch valve is provided between the tee pipes.

3. The purification treatment device for high-temperature exhaust gas heat recovery waste heat boiler according to claim 1, characterized in that: A pressure relief valve is provided at the upper end of the water storage chamber.

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