A 14-chamber rotary valve oxidation device

Abstract

This utility model discloses a 14-chamber rotary valve oxidation device, including an oxidation chamber assembly, a heat storage chamber assembly, an inlet / outlet chamber switching valve assembly, and a centrifugal fan. The oxidation chamber assembly is installed on top of the heat storage chamber assembly, and the inlet / outlet chamber switching valve assembly is installed below the heat storage chamber assembly. An operating platform and steps are installed on the outer surface of the heat storage chamber assembly, and heat storage chamber support legs are installed on the lower plane of the heat storage chamber assembly. An inlet chamber connection channel is installed on one side of the inlet / outlet switching valve assembly, and the input end of the inlet chamber connection channel is connected to the centrifugal fan. This utility model, by setting up a separate exhaust chamber switching valve assembly with 14 individual chambers inside, and the heat storage chamber having 14 individual chamber spaces, combined with the continuous rotation and switching of the exhaust chamber switching valve assembly, can effectively solve the problems of low utilization rate and uneven temperature field in the heat storage chamber, thereby improving the stability and safety of the equipment.

Description

Technical Field

[0001] This utility model belongs to the field of gas oxidation technology, and specifically relates to a 14-chamber rotary valve oxidation device. Background Technology

[0002] Coal mine gas, also known as coalbed methane, refers to unconventional natural gas (mainly composed of methane) stored in coal seams. When the gas concentration reaches 5%-16%, it will explode upon contact with an open flame, which is the root cause of coal mine gas explosion accidents. The greenhouse effect of coal mine gas released into the atmosphere is 21 times that of carbon dioxide, making it one of the major industrial greenhouse gas emissions. In modern coal mining production processes, gas concentrations above 30% are considered high-concentration gas, most of which is directly utilized. Gas concentrations of 3% to 30% are considered low-concentration gas, and direct utilization is more difficult. After the domestic low-concentration methane power generation technology matured, internal combustion engine methane power generation technology was mostly used for methane concentrations of 9% to 30%. For mine ventilation methane (also known as "exhaust methane") with a concentration of less than 0.8%, these low-concentration methanes could not be utilized for a long time and were all discharged into the atmosphere. However, although the concentration of mine ventilation methane is low, the total amount is particularly huge. The methane contained therein accounts for about 81% of the total methane in coal mine methane. Such a huge amount of methane emissions not only means huge greenhouse gas pollution, but also contains huge potential energy.

[0003] As is well known, the utilization of coal mine gas is the main way to reduce methane emissions from coal mines and plays a positive role in promoting the achievement of carbon peak and carbon neutrality goals. At present, the coal mine low-concentration gas and ventilation gas utilization project is to destroy coal mine gas and ventilation gas with a methane volume concentration of no more than 8% through flameless oxidation decomposition. The heat generated by the decomposition is used for power generation or other purposes (such as heating) to avoid direct methane emissions.

[0004] Gas regenerative oxidation devices are the core technology and equipment for gas regenerative oxidation utilization. Currently, fixed chamber structures are widely used in coal mines. However, existing fixed chamber gas regenerative oxidation devices suffer from low oxidation utilization and uneven temperature field in the regenerative chamber, which affects the stability and safety of coal mine gas oxidation devices. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a 14-chamber rotary valve oxidation device. By setting a separate exhaust chamber switching valve assembly, which has 14 separate chambers inside, and the heat storage chamber has 14 separate chamber spaces, the continuous rotation and switching of the exhaust chamber switching valve assembly can effectively solve the problems of low utilization rate and uneven temperature field in the heat storage chamber, thereby improving the stability and safety of the equipment.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A 14-chamber rotary valve oxidation device includes an oxidation chamber assembly, a heat storage chamber assembly, an inlet / outlet chamber switching valve assembly, and a centrifugal fan. The oxidation chamber assembly is installed on top of the heat storage chamber assembly, and the inlet / outlet chamber switching valve assembly is installed below the heat storage chamber assembly. An operating platform and a ladder are installed on the outer surface of the heat storage chamber assembly, and heat storage chamber support legs are installed on the lower plane of the heat storage chamber assembly. An inlet chamber connection channel is installed on one side of the inlet / outlet chamber switching valve assembly, and the input end of the inlet chamber connection channel is connected to the centrifugal fan.

[0008] The oxidation chamber assembly includes an oxidation chamber manhole and a combustion device. Both the oxidation chamber manhole and the combustion device are installed on the outside of the oxidation chamber assembly. A high-temperature flue gas outlet is provided at the top of the oxidation chamber manhole. The heat storage chamber assembly has 14 heat storage chamber connection ports, which are evenly distributed at the bottom of the heat storage chamber assembly.

[0009] The internal structure of the heat storage chamber assembly is divided into 14 separate sector-shaped cavities by multiple heat storage chamber cavity partition plates. The outer surface of the heat storage chamber cavity partition plates is equipped with a partition plate heat insulation layer. The inside of each sector-shaped cavity is equipped with a sector-shaped grate support and a heat storage ceramic body. The inner surfaces of both the oxidation chamber assembly and the heat storage chamber assembly are equipped with heat insulation layers.

[0010] The intake and exhaust chamber switching valve assembly includes an intake chamber cavity, an exhaust chamber cavity, a multi-stage reducer motor, a rotary valve stator, and a rotary valve rotor. The intake chamber cavity includes an intake chamber cavity connection port, intake chamber cavity partition plates, and an intake chamber cavity inlet. There are 14 intake chamber cavity connection ports evenly distributed on the outer side of the intake chamber cavity. Multiple intake chamber cavity partition plates are installed inside the intake chamber cavity and connected to both the intake chamber cavity and the rotary valve stator. The number of intake chamber cavity partition plates corresponds one-to-one with the number of partition plates in the heat storage chamber cavity. The intake chamber cavity inlet is located on the outer side of the intake chamber cavity and below the intake chamber cavity connection port. The exhaust chamber cavity includes an exhaust chamber cavity. The exhaust chamber includes a manhole and cover, an exhaust port, and a backflush connection port. The manhole and cover and the exhaust port are located on the outside of the exhaust chamber. One end of the backflush connection port is located on the outside of the exhaust chamber, and the other end is located inside the exhaust chamber. The rotary valve stator is connected to the intake chamber and installed inside the intake chamber. The exhaust chamber is connected to the rotary valve stator and is located below the rotary valve stator. The rotary valve rotor is installed inside the rotary valve stator and connected to the motor of the multi-stage reducer at the bottom. The heat storage chamber connection port in the heat storage chamber assembly is connected to the intake chamber connection port in the intake / exhaust switching valve assembly through the intake / exhaust chamber and heat storage chamber connecting pipe.

[0011] The beneficial effects of this utility model are:

[0012] (1) By setting up a separate exhaust chamber switching valve assembly, which has 14 separate chambers inside, and the heat storage chamber has 14 separate chamber spaces, the continuous rotation and switching of the exhaust chamber switching valve assembly can effectively solve the problems of low utilization rate and uneven temperature field in the heat storage chamber, thereby improving the stability and safety of the equipment.

[0013] (2) The 14 heat storage chambers and 14 air intake chambers work together to distribute the airflow evenly and achieve high purification efficiency. Under the action of the rotary valve stator and rotary valve rotor, the intake and exhaust are continuous, the pipeline pressure fluctuates little, the exhaust gas does not backflow, the odor in the production workshop is reduced, and it is beneficial to the physical and mental health of the staff. Attached Figure Description

[0014] Appendix Figure 1 This is a front view of a 14-chamber rotary valve oxidation device according to this utility model.

[0015] Appendix Figure 2 This is a left view of a 14-chamber rotary valve oxidation device according to this utility model.

[0016] Appendix Figure 3 This is a top view of a 14-chamber rotary valve oxidation device according to this utility model.

[0017] Appendix Figure 4 It is attached Figure 1 Sectional view along the AA direction.

[0018] Appendix Figure 5 This is an isometric view of the intake and exhaust chamber switching valve assembly in a 14-chamber rotary valve oxidation device according to this utility model.

[0019] Appendix Figure 6 It is attached Figure 5 Sectional view along the BB direction.

[0020] In the diagram: 1. Oxidation chamber assembly; 101. Oxidation chamber manhole; 102. Combustion device; 103. High-temperature flue gas outlet; 2. Heat storage chamber assembly; 201. Heat storage chamber connection port; 3. Intake and exhaust switching valve assembly; 301. Intake chamber cavity; 301-1. Intake chamber cavity connection port; 301-2. Intake chamber cavity partition plate; 301-3. Intake chamber cavity air inlet; 302. Exhaust chamber cavity; 302-1. Exhaust chamber cavity manhole and... 302-2. Exhaust port of exhaust chamber; 302-3. Backflush connection port; 303. Multi-stage reducer motor; 304. Rotary valve stator; 305. Rotary valve rotor; 4. Connecting pipe between inlet / outlet chamber and heat storage chamber; 5. Operating platform and steps; 6. Heat storage chamber support legs; 7. Inlet chamber connecting channel; 8. Centrifugal fan device; 9. Heat storage chamber partition plate; 10. Partition plate insulation layer; 11. Heat insulation layer; 12. Heat storage ceramic body. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-6 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] A 14-chamber rotary valve oxidation device includes an oxidation chamber assembly 1, a heat storage chamber assembly 2, an inlet / outlet switching valve assembly, and a centrifugal fan device 8. The oxidation chamber assembly 1 is installed on top of the heat storage chamber assembly 2, and the inlet / outlet switching valve assembly is installed below the heat storage chamber assembly 2. An operating platform and a ladder 5 are installed on the outer surface of the heat storage chamber assembly 2, and heat storage chamber support legs 6 are installed on the lower plane of the heat storage chamber assembly 2. An air inlet connecting channel 7 is installed on one side of the inlet / outlet switching valve assembly 3, and the input end of the air inlet connecting channel 7 is connected to the centrifugal fan device 8.

[0024] The oxidation chamber assembly 1 includes an oxidation chamber manhole 101 and a combustion device 102. Both the oxidation chamber manhole 101 and the combustion device 102 are installed on the outside of the oxidation chamber assembly 1. A high-temperature flue gas outlet 103 is provided at the top of the oxidation chamber manhole 101. The heat storage chamber assembly 2 is provided with heat storage chamber connection ports 201. There are 14 heat storage chamber connection ports 201, which are evenly distributed at the bottom of the heat storage chamber assembly 2.

[0025] The interior of the heat storage chamber assembly 2 is divided into 14 separate sector-shaped cavities by multiple heat storage chamber cavity partition plates 9. The outer surface of the heat storage chamber cavity partition plates 9 is equipped with a partition plate heat insulation layer 10. The interior of each sector-shaped cavity is equipped with a sector-shaped grate support and a heat storage ceramic body 12. The inner surfaces of both the oxidation chamber assembly 1 and the heat storage chamber assembly 2 are equipped with a heat insulation layer 11.

[0026] The intake and exhaust chamber switching valve assembly includes an intake chamber cavity 301, an exhaust chamber cavity 302, a multi-stage reducer motor 303, a rotary valve stator 304, and a rotary valve rotor 305. The intake chamber cavity 301 includes an intake chamber cavity connection port 301-1, an intake chamber cavity partition plate 301-2, and an intake chamber cavity air inlet 301-3. There are 14 intake chamber cavity connection ports 301-1, which are evenly distributed on the outside of the intake chamber cavity 301. Multiple intake chamber partition plates 301-2 are installed inside the intake chamber 301 and are respectively connected to the intake chamber 301 and the rotary valve stator 304. The number of intake chamber partition plates 301-2 corresponds one-to-one with the number of heat storage chamber partition plates 9. The air inlet of the intake chamber 301-3 is located on the outside of the intake chamber 301 and is located below the intake chamber connection port 301-1. The exhaust chamber 302 includes an exhaust chamber cavity. The exhaust chamber 302 includes a manhole and cover plate 302-1, an exhaust port 302-2, and a backflush connection port 302-3. The manhole and cover plate 302-1 and the exhaust port 302-2 are both located on the outside of the exhaust chamber 302. One end of the backflush connection port 302-3 is located on the outside of the exhaust chamber 302, and the other end is located inside the exhaust chamber 302. The rotary valve stator 304 is connected to the intake chamber 301 and installed on... Inside the intake chamber 301, the exhaust chamber 302 is connected to the rotary valve stator 304. The exhaust chamber 302 is located below the rotary valve stator 304. The rotary valve rotor 305 is installed inside the rotary valve stator 304 and connected to the multi-stage reducer motor 303 at the bottom. The heat storage chamber connection port 201 in the heat storage chamber assembly 2 is connected to the intake chamber connection port 301-1 in the intake and exhaust switching valve assembly 3 through the intake and exhaust chamber and heat storage chamber connecting pipe 4.

[0027] A 14-chamber rotary valve oxidation device operates as follows: Upon initial operation, the multi-stage reducer motor 303 is started, followed by the activation of the combustion device 102, raising the internal temperature of the oxidation chamber assembly 1 to 900°C. After the high-temperature zone of the heat storage ceramic body in the heat storage chamber assembly 2 reaches 450°C, gas is slowly introduced through the inlet port 301-3 into the inlet chamber 301, then along the connecting pipe 4 between the inlet / outlet chamber and the heat storage chamber into the heat storage chamber assembly 2. As the multi-stage reducer motor 303 drives the rotary valve rotor 305 to rotate continuously... The gas continuously switches between the high-temperature heat storage zone of the heat storage chamber component 2 and the oxidation chamber component 1 to complete the oxidation reaction and release heat. Finally, part of the oxidized high-temperature flue gas flows to the waste heat utilization equipment through the high-temperature flue gas outlet 103 at the top of the oxidation chamber component 1, and part flows to the heat storage chamber component 2 below the oxidation chamber component, transferring heat to the heat storage ceramic body of the heat storage chamber component 2. At the same time, a very small amount of low-temperature gas is discharged along the exhaust port 302-2 of the exhaust chamber cavity 302. The above work is repeated in sequence, so that a 14-chamber rotary valve oxidation device can achieve self-sustaining operation.

[0028] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A 14-chamber rotary valve oxidation device characterized by, The device includes an oxidation chamber assembly, a heat storage chamber assembly, an inlet / outlet chamber switching valve assembly, and a centrifugal fan. The oxidation chamber assembly is installed on top of the heat storage chamber assembly, and the inlet / outlet chamber switching valve assembly is installed below the heat storage chamber assembly. An operating platform and steps are installed on the outer surface of the heat storage chamber assembly, and heat storage chamber support legs are installed on the lower plane of the heat storage chamber assembly. An inlet chamber connection channel is installed on one side of the inlet / outlet chamber switching valve assembly, and the input end of the inlet chamber connection channel is connected to the centrifugal fan. The interior of the heat storage chamber assembly is divided into 14 separate sector-shaped cavities by multiple heat storage chamber cavity partition plates. A partition plate heat insulation layer is installed on the outer surface of the heat storage chamber cavity partition plates, and a sector-shaped grate support and a heat storage ceramic body are installed inside each sector-shaped cavity.

2. A 14-chamber rotary valve oxidation device according to claim 1, characterized in that, The oxidation chamber assembly includes an oxidation chamber manhole and a combustion device. Both the oxidation chamber manhole and the combustion device are installed on the outside of the oxidation chamber assembly. A high-temperature flue gas outlet is provided at the top of the oxidation chamber manhole.

3. A 14-chamber rotary valve oxidation device according to claim 1, characterized in that, The heat storage chamber assembly has 14 heat storage chamber connection ports, which are evenly distributed at the bottom of the heat storage chamber assembly.

4. A 14-chamber rotary valve oxidation device according to claim 1, characterized in that, Both the oxidation chamber assembly and the heat storage chamber assembly have heat insulation layers installed on their inner surfaces.

5. A 14-chamber rotary valve oxidation device according to claim 1, characterized in that, The intake and exhaust chamber switching valve assembly includes an intake chamber cavity, an exhaust chamber cavity, a multi-stage reducer motor, a rotary valve stator, and a rotary valve rotor. The intake chamber cavity includes an intake chamber cavity connection port, intake chamber cavity partition plates, and an intake chamber cavity inlet. There are 14 intake chamber cavity connection ports evenly distributed on the outer side of the intake chamber cavity. Multiple intake chamber cavity partition plates are installed inside the intake chamber cavity and connected to both the intake chamber cavity and the rotary valve stator. The number of intake chamber cavity partition plates corresponds one-to-one with the number of partition plates in the heat storage chamber cavity. The intake chamber cavity inlet is located on the outer side of the intake chamber cavity and below the intake chamber cavity connection port. The exhaust chamber cavity includes an exhaust chamber cavity. The exhaust chamber includes a manhole and cover, an exhaust port, and a backflush connection port. The manhole and cover and the exhaust port are located on the outside of the exhaust chamber. One end of the backflush connection port is located on the outside of the exhaust chamber, and the other end is located inside the exhaust chamber. The rotary valve stator is connected to the intake chamber and installed inside the intake chamber. The exhaust chamber is connected to the rotary valve stator and is located below the rotary valve stator. The rotary valve rotor is installed inside the rotary valve stator and connected to the motor of the multi-stage reducer at the bottom. The heat storage chamber connection port in the heat storage chamber assembly is connected to the intake chamber connection port in the intake and exhaust chamber switching valve assembly through the intake and exhaust chamber and heat storage chamber connecting pipe.

Images