CN217410347U

CN217410347U - RCO catalyst activity control device

Info

Publication number: CN217410347U
Application number: CN202123178535.2U
Authority: CN
Inventors: 康记; 彭冬友; 李刚
Original assignee: Dongguan Huake Environmental Technology Co ltd
Current assignee: Dongguan Huake Environmental Technology Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-09-13
Anticipated expiration: 2031-12-17

Abstract

The utility model discloses a RCO catalyst activity controlling means, relate to exhaust-gas treatment technical field, including the spray column, the oxidation furnace, stock solution bucket and benefit air-cooler, the transfer line is connected jointly to the inside of stock solution bucket and the bottom inner chamber of spray column, the interlude of transfer line has concatenated the transfer pump, through starting the transfer pump, make the inside alkali lye of stock solution bucket get into the bottom inner chamber of spray column through the transfer line, add alkali lye to the high liquid level and can stop carrying in the bottom inner chamber of spray column, start the circulating liquid pump, make the alkali lye of spray column bottom inner chamber pass through the liquid suction pipe, check valve and drain pipe, thereby spout by a plurality of groups of shower nozzles, with VCO waste gas leading-in to the bottom inner chamber of spray column through the waste gas admission pipe, make VCO waste gas and alkali lye contact, lead in the VCO waste gas, the metallic compound of zinc carries out the preliminary treatment, and make VCO waste gas rise, by a plurality of groups shower nozzle blowout alkali lye to lead in the VCO waste gas, And performing secondary degradation treatment on the metal compound of the zinc.

Description

RCO catalyst activity control device

Technical Field

The utility model relates to a waste gas treatment technical field specifically is a RCO catalyst activity control device.

Background

The principle of VOC treatment by an RCO heat accumulating type catalytic combustion method is as follows: the first step is the adsorption of the catalyst to VOC molecules to increase the concentration of reactants, and the second step is the catalytic oxidation stage to reduce the activation energy of the reaction and increase the reaction rate. The organic waste gas can be subjected to anaerobic combustion at a lower ignition temperature by virtue of the catalyst, and decomposed into CO2 and H2O to release a large amount of heat, compared with direct combustion, the catalyst has the characteristics of low ignition temperature and low energy consumption, external heat supply is not required after the ignition temperature is reached under certain conditions, and the reaction temperature is between 250 ℃ and 400 ℃. The key to determining whether the RCO system performs well is the catalyst, which is generally a metal supported and ceramic supported catalyst, with the noble metal or transition metal catalyst usually supported on saddle or honeycomb ceramics. The activity of the catalyst can be divided into three stages of induction activation, stabilization and aging inactivation, and the catalyst can be poisoned and lose activity in the using process. Substances causing catalyst poisoning are generally inorganic compounds such as phosphorus, arsenic, lead, zinc, and the like in the VOC adhered in a large amount. In addition, the surface of the catalyst may be deposited with carbon after a period of use to affect the activity. The existing RCO regenerative thermal oxidizer devices usually have no special treatment measures for the above two factors influencing the catalyst activity, and therefore, an RCO catalyst activity control device is proposed.

SUMMERY OF THE UTILITY MODEL

To prior art not enough, the utility model provides a RCO catalyst activity controlling means has solved the problem of proposing in the above-mentioned background art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides an RCO catalyst activity controlling means, includes spray column, oxidation furnace, stock solution bucket and benefit air-cooler, the transfer line is connected jointly to the inside of stock solution bucket and the bottom inner chamber of spray column, the interlude of transfer line has concatenated the transfer pump, the air-out end of benefit air-cooler is connected with the air supplement pipe jointly with the top of oxidation furnace, the inside of oxidation furnace is equipped with the catalyst.

As a further technical scheme of the utility model, the bottom of spray column is connected with the liquid suction pipe, the free end of liquid suction pipe is connected with the circulating liquid pump, the interlude of liquid suction pipe has concatenated the check valve, the exit end of circulating liquid pump is connected with the drain pipe, the top inner chamber of spray column is equipped with a plurality of shower nozzles of organizing, the free end and a plurality of shower nozzles of drain pipe link to each other.

As a further technical scheme of the utility model, the bottom of spray column is connected with the waste gas admission pipe, the top of spray column is connected with the waste gas conveyer pipe, dry-type filter and waste gas fan have concatenated in proper order to the interlude of waste gas conveyer pipe.

As a further technical scheme of the utility model, the bottom of oxidation furnace is connected and is equipped with two sets of connecting pipes, every group the free end of connecting pipe all is connected with the switching-over valve.

As a further technical scheme of the utility model, the exit end of exhaust gas conveying pipe links to each other with the inlet end of two sets of switching-over valves respectively, the top exit end of oxidation furnace and the exit end of every group switching-over valve are connected with exhaust gas discharge pipe jointly.

As a further technical scheme of the utility model, the top of oxidation furnace is equipped with PLC and temperature sensor, temperature sensor's probe end passes the top of oxidation furnace, and extends to the inner chamber of oxidation furnace.

Advantageous effects

The utility model provides a RCO catalyst activity controlling means. Compared with the prior art, the method has the following beneficial effects:

1. the utility model provides a RCO catalyst activity controlling means, through starting the transfer pump, make the inside alkali lye of stock solution bucket get into the bottom inner chamber of spray column through the transfer line, bottom inner chamber at the spray column adds alkali lye to high liquid level and can stop conveying, start the circulating liquid pump, make the alkali lye of spray column bottom inner chamber pass through the liquid suction pipe, check valve and drain pipe, thereby spout by a plurality of groups shower nozzle, with VCO waste gas through the leading-in bottom inner chamber to the spray column of waste gas admission pipe, make VCO waste gas and alkali lye contact, lead in the VCO waste gas, the metallic compound of zinc carries out the preliminary treatment, and make VCO waste gas when the spray column is inside to rise, lead in the VCO waste gas is spouted alkali lye by a plurality of groups shower nozzle, the metallic compound of zinc carries out secondary degradation processing.

2. The utility model provides a RCO catalyst activity control device, VCO waste gas after making the processing gets into the waste gas conveyer pipe through the waste gas fan, and the inner chamber that gets into the oxidation furnace through dry filter, thereby VCO waste gas takes place anaerobic combustion with the catalyst, decompose into CO2 and H2O and emit a large amount of heats, obvious carbon deposit appears on the catalyst surface in the oxidation furnace inside, then start the benefit air-cooler, thereby supply new trend to the catalyst surface through the moisturizing pipe, and then carbon deposit on catalyst surface is sintered through the aerobic combustion reaction, and in the normal operating of oxidation furnace, carry out real-time supervision to the inside temperature of oxidation furnace by temperature sensor, when the inside temperature of oxidation furnace is too high, supply the wind cooling to the oxidation furnace by PLC control benefit air-cooler, until the temperature resumes normally in the oxidation furnace.

Drawings

Fig. 1 is a schematic structural view of an apparatus for controlling the activity of an RCO catalyst.

In the figure: 1. a spray tower; 2. an oxidation furnace; 3. a liquid storage barrel; 4. supplementing a cold air blower; 5. a spray head; 6. a liquid outlet pipe; 7. a liquid pumping pipe; 8. a circulating liquid pump; 9. a one-way valve; 10. an infusion pump; 11. a transfusion tube; 12. air supplementing pipes; 13. an exhaust gas inlet pipe; 14. an exhaust gas delivery pipe; 15. a dry filter; 16. a waste gas fan; 17. a catalyst; 18. a connecting pipe; 19. a diverter valve; 20. an exhaust gas discharge pipe; 21. a PLC; 22. a temperature sensor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution of an RCO catalyst activity control device: an RCO catalyst activity control device comprises a spray tower 1, an oxidation furnace 2, a liquid storage barrel 3 and a supplementary cooling air blower 4, wherein the interior of the liquid storage barrel 3 and the bottom inner cavity of the spray tower 1 are jointly connected with a liquid conveying pipe 11, the middle section of the liquid conveying pipe 11 is connected with a liquid conveying pump 10 in series, the air outlet end of the supplementary cooling air blower 4 and the top of the oxidation furnace 2 are jointly connected with a supplementary air pipe 12, a catalyst 17 is arranged inside the oxidation furnace 2, the bottom of the spray tower 1 is connected with a liquid pumping pipe 7, the free end of the liquid pumping pipe 7 is connected with a circulating liquid pump 8, the middle section of the liquid pumping pipe 7 is connected with a one-way valve 9 in series, the outlet end of the circulating liquid pump 8 is connected with a liquid outlet pipe 6, the top inner cavity of the spray tower 1 is provided with a plurality of groups of nozzles 5, the free end of the liquid outlet pipe 6 is connected with the plurality of groups of nozzles 5, the bottom of the spray tower 1 is connected with a waste gas inlet pipe 13, the top of the spray tower 1 is connected with a waste gas conveying pipe 14, the middle section of the waste gas conveying pipe 14 is sequentially connected with a dry filter 15 and a waste gas blower 16 in series, the bottom of oxidation furnace 2 is connected and is equipped with two sets of connecting pipes 18, the free end of every group connecting pipe 18 all is connected with switching-over valve 19, the exit end of exhaust gas conveying pipe 14 links to each other with the inlet end of two sets of switching-over valves 19 respectively, the top outlet end of oxidation furnace 2 and the exit end of every group switching-over valve 19 are connected with waste gas discharge pipe 20 jointly, the top of oxidation furnace 2 is equipped with PLC21 and temperature sensor 22, the probe end of temperature sensor 22 passes the top of oxidation furnace 2, and extend to the inner chamber of oxidation furnace 2.

The utility model discloses a theory of operation: when the system is used, the infusion pump 10 is started, so that the alkali liquor in the liquid storage barrel 3 enters the inner cavity at the bottom of the spray tower 1 through the infusion pipe 11, the conveying can be stopped by adding the alkali liquor to a high liquid level in the inner cavity at the bottom of the spray tower 1, the circulating liquid pump 8 is started, the alkali liquor in the inner cavity at the bottom of the spray tower 1 passes through the liquid extraction pipe 7, the one-way valve 9 and the liquid outlet pipe 6, and is sprayed out by the groups of spray heads 5, the VCO waste gas is guided into the inner cavity at the bottom of the spray tower 1 through the waste gas inlet pipe 13, the VCO waste gas is contacted with the alkali liquor, metal compounds of lead and zinc in the VCO waste gas are pretreated, and when the VCO waste gas rises in the spray tower 1, the alkali liquor sprayed out by the groups of spray heads 5 is used for secondary degradation treatment of the metal compounds of lead and zinc in the VCO waste gas;

and then, the processed VCO waste gas enters a waste gas conveying pipe 14 through a waste gas fan 16 and enters an inner cavity of the oxidation furnace 2 through a dry filter 15, so that the VCO waste gas and a catalyst 17 are subjected to anaerobic combustion and decomposed into CO2 and H2O to release a large amount of heat, if obvious carbon deposition occurs on the surface of the catalyst 17 in the oxidation furnace 2, the air supplementing fan 4 is started, fresh air is supplemented on the surface of the catalyst 17 through an air supplementing pipe 12, the carbon deposition on the surface of the catalyst is sintered through an aerobic combustion reaction, and in the normal operation of the oxidation furnace 2, the temperature in the oxidation furnace 2 is monitored in real time through a temperature sensor 22, and when the temperature in the oxidation furnace 2 is too high, the PLC21 controls the air supplementing fan 4 to supplement and reduce the temperature of the oxidation furnace 2 until the temperature in the oxidation furnace 2 returns to normal.

Claims

1. The utility model provides a RCO catalyst activity controlling means, includes spray column (1), oxidation furnace (2), stock solution bucket (3) and benefit air-cooler (4), its characterized in that, transfer line (11) are connected jointly to the inside of stock solution bucket (3) and the bottom inner chamber of spray column (1), the interlude of transfer line (11) has concatenated transfer pump (10), the air-out end of benefit air-cooler (4) is connected with benefit tuber pipe (12) jointly with the top of oxidation furnace (2), the inside of oxidation furnace (2) is equipped with catalyst (17).

2. The RCO catalyst activity control device according to claim 1, wherein the bottom of the spray tower (1) is connected with a liquid extraction pipe (7), the free end of the liquid extraction pipe (7) is connected with a circulating liquid pump (8), the middle section of the liquid extraction pipe (7) is connected with a one-way valve (9) in series, the outlet end of the circulating liquid pump (8) is connected with a liquid outlet pipe (6), the top inner cavity of the spray tower (1) is provided with a plurality of groups of spray heads (5), and the free end of the liquid outlet pipe (6) is connected with the plurality of groups of spray heads (5).

3. The RCO catalyst activity control device according to claim 2, wherein the bottom of the spray tower (1) is connected with an exhaust gas inlet pipe (13), the top of the spray tower (1) is connected with an exhaust gas delivery pipe (14), and the middle section of the exhaust gas delivery pipe (14) is connected with a dry filter (15) and an exhaust gas fan (16) in series.

4. An RCO catalyst activity control device according to claim 3, characterized in that the bottom of the oxidation furnace (2) is connected with two sets of connecting pipes (18), and the free end of each set of connecting pipes (18) is connected with a reversing valve (19).

5. An RCO catalyst activity control device according to claim 4, characterized in that the outlet ends of the exhaust gas delivery pipe (14) are respectively connected with the gas inlet ends of two sets of reversing valves (19), and the top outlet end of the oxidation furnace (2) and the outlet end of each set of reversing valves (19) are commonly connected with an exhaust gas discharge pipe (20).

6. The RCO catalyst activity control device according to claim 4, characterized in that the top end of the oxidation furnace (2) is provided with a PLC (21) and a temperature sensor (22), and the probe end of the temperature sensor (22) passes through the top of the oxidation furnace (2) and extends to the inner cavity of the oxidation furnace (2).