CN212222462U - System for treating waste catalyst and residual liquid in refrigerant production - Google Patents
System for treating waste catalyst and residual liquid in refrigerant production Download PDFInfo
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- CN212222462U CN212222462U CN202020223990.6U CN202020223990U CN212222462U CN 212222462 U CN212222462 U CN 212222462U CN 202020223990 U CN202020223990 U CN 202020223990U CN 212222462 U CN212222462 U CN 212222462U
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Abstract
The utility model discloses a belong to waste liquid treatment technical field, specifically be a processing system of useless catalyst and raffinate in refrigerant production, it includes: reaction raffinate metering tank, natural gas line, pyrolysis furnace, exhaust-heat boiler, cooling tower, water absorbing device, alkali absorbing device, electrostatic precipitator tower and emission tower, reaction raffinate metering tank with the equal fixed connection of natural gas line the pyrolysis furnace, pyrolysis furnace fixed connection exhaust-heat boiler, exhaust-heat boiler fixed connection the cooling tower, cooling tower fixed connection water absorbing device, water absorbing device includes one-level water absorption tower and second grade water absorption tower, cooling tower fixed connection one-level water absorption tower. The system for treating the waste catalyst and the residual liquid in the production of the refrigerant can basically remove the acidic substances in the waste catalyst and the reaction residual liquid, and cannot cause secondary pollution to the environment.
Description
Technical Field
The utility model relates to a waste liquid treatment technical field specifically is a processing system of spent catalyst and raffinate in refrigerant production.
Background
At present, the waste catalyst and reaction residual liquid are treated by hydrolysis, neutralization and landfill. However, this processing method is the most primitive processing method and has many problems. First, a large amount of honeycomb-shaped acidic solid matters are generated in the treatment process, and although the honeycomb-shaped acidic solid matters are soaked in alkali liquor for a long time, the contained acidic substances such as hydrogen fluoride and sulfuric acid are difficult to completely eliminate. The solid waste is taken to be landfilled, so that not only is a large amount of solid waste landfilling cost required, but also secondary pollution to the environment is possible. In addition, a large amount of lime slurry water is needed in the hydrolysis and neutralization processes, and the treatment amount of waste liquid and the treatment amount of solid waste such as lime sludge are increased.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above and/or other problems occurring in the prior art processing devices.
Therefore, the utility model aims at providing a system for treating spent catalyst and raffinate in refrigerant production can basically detach the acidic material in spent catalyst and reaction raffinate, can not cause secondary pollution to the environment.
For solving the technical problem, according to the utility model discloses an aspect, the utility model provides a following technical scheme:
a system for treating spent catalyst and raffinate from refrigerant production comprising: reaction raffinate metering tank, natural gas pipeline, pyrolysis furnace, exhaust-heat boiler, cooling tower, water absorbing device, alkali absorbing device, electrostatic precipitator tower and emission tower, reaction raffinate metering tank with the equal fixed connection of natural gas pipeline the pyrolysis furnace, pyrolysis furnace fixed connection the exhaust-heat boiler, exhaust-heat boiler fixed connection the cooling tower, cooling tower fixed connection the water absorbing device, water absorbing device includes one-level water absorbing tower and second grade water absorbing tower, cooling tower fixed connection the one-level water absorbing tower, the one-level water absorbing tower fixed connection the second grade water absorbing tower, the second grade water absorbing tower fixed connection the alkali absorbing device, alkali absorbing device includes one-level alkali absorbing tower and second grade alkali absorbing tower, second grade water absorbing tower fixed connection the one-level alkali absorbing tower, the first-level alkali absorption tower is fixedly connected with the second-level alkali absorption tower, the second-level alkali absorption tower is fixedly connected with the electrostatic precipitation tower, and the electrostatic precipitation tower is fixedly connected with the discharge tower.
As the utility model discloses a system for treating spent catalyst and raffinate in refrigerant production a preferred scheme, wherein: and a liquid level sensor is fixedly arranged in the reaction residual liquid metering tank.
As the utility model discloses a system for treating spent catalyst and raffinate in refrigerant production a preferred scheme, wherein: and a check valve is fixedly arranged at the joint of the natural gas pipeline and the high-temperature cracking furnace.
As the utility model discloses a system for treating spent catalyst and raffinate in refrigerant production a preferred scheme, wherein: the heat-insulating layers in the pyrolysis furnace and the waste heat boiler are both made of asbestos plates and hydrofluoric acid anticorrosive paint coated on the surfaces of the asbestos plates.
As the utility model discloses a system for treating spent catalyst and raffinate in refrigerant production a preferred scheme, wherein: the temperature of the high-temperature cracking furnace is 1200 ℃.
Compared with the prior art: waste catalyst and reaction residual liquid generated in the production process of a refrigerant are introduced into a reaction residual liquid metering tank, then the reaction residual liquid in the reaction residual liquid metering tank and natural gas in a natural gas pipeline are introduced into a high-temperature cracking furnace together, the high-temperature cracking furnace enables the fluorosulfonic acid waste catalyst to be decomposed into hydrogen fluoride and sulfuric acid under the high-temperature condition, polymer residual liquid generates CO2, water vapor and a small amount of HF through a waste heat boiler, the high-temperature cracked gas is cooled through a refrigerating tower and then is absorbed by water through a water absorption device to become mixed acid containing HF and H2SO4, tail gas is further absorbed by alkali liquor of an alkali absorption device to remove trace acid substances carried by the tail gas, then the tail gas is dedusted through an electrostatic precipitator, and then the tail gas is discharged at high altitude through a discharge tower, the waste catalyst and residual liquid treatment system in the production of the refrigerant can basically remove the acid substances in the, no secondary pollution to the environment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor. Wherein:
fig. 1 is a flow chart of the present invention.
In the figure: 100 reaction raffinate metering tanks, 110 liquid level sensors, 200 natural gas pipelines, 210 one-way valves, 300 high-temperature cracking furnaces, 400 waste heat boilers, 500 cooling towers, 600 water absorption devices, 610 first-stage water absorption towers, 620 second-stage water absorption towers, 700 alkali absorption devices, 710 first-stage alkali absorption towers, 720 second-stage alkali absorption towers, 800 electrostatic dust removal towers and 900 discharge towers.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways than those specifically described herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of explanation, the sectional view showing the device structure will not be partially enlarged according to the general scale, and the schematic drawings are only examples, and should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The utility model provides a processing system of spent catalyst and raffinate in refrigerant production can detach the acidic material in spent catalyst and the reaction raffinate basically, can not cause secondary pollution to the environment, please refer to figure 1, include: a reaction raffinate metering tank 100, a natural gas pipeline 200, a pyrolysis furnace 300, a waste heat boiler 400, a refrigeration tower 500, a water absorption device 600, an alkali absorption device 700, an electrostatic precipitation tower 800 and a discharge tower 900;
referring again to FIG. 1, a reaction residue metering tank 100 is used to store the reaction residue to be purified;
referring again to fig. 1, the natural gas pipeline 200 is used to introduce natural gas into the pyrolysis furnace 300;
referring to fig. 1 again, the reaction raffinate metering tank 100 and the natural gas pipeline 200 are both fixedly connected to the pyrolysis furnace 300, specifically, the reaction raffinate metering tank 100 and the natural gas pipeline 200 are both communicated with the pyrolysis furnace 300 through pipelines, and the pyrolysis furnace 300 is used for decomposing the fluorosulfonic acid waste catalyst into hydrogen fluoride and sulfuric acid under a high temperature condition;
referring to fig. 1 again, the pyrolysis furnace 300 is fixedly connected to a waste heat boiler 400, specifically, the pyrolysis furnace 300 is communicated with the waste heat boiler 400 through a pipeline, and the waste heat boiler 400 is used for utilizing waste heat to enable decomposition reaction to be more sufficient;
referring to fig. 1 again, the exhaust-heat boiler 400 is fixedly connected to the cooling tower 500, specifically, the exhaust-heat boiler 400 is communicated with the cooling tower 500 through a pipeline, and the cooling tower 500 is used for cooling the high-temperature cracked gas;
referring to fig. 1 again, the refrigeration tower 500 is fixedly connected to the water absorption device 600, the water absorption device 600 includes a primary water absorption tower 610 and a secondary water absorption tower 620, the refrigeration tower 500 is fixedly connected to the primary water absorption tower 610, the primary water absorption tower 610 is fixedly connected to the secondary water absorption tower 620, specifically, the refrigeration tower 500 is fixedly connected to the water absorption device 600, the water absorption device 600 includes a primary water absorption tower 610 and a secondary water absorption tower 620, the refrigeration tower 500 is communicated with the primary water absorption tower 610 through a pipeline, the primary water absorption tower 610 is communicated with the secondary water absorption tower 620 through a pipeline, both the primary water absorption tower 610 and the secondary water absorption tower 620 are used for absorbing the high-temperature cracked gas into mixed acid containing HF and H2SO4 through water;
referring to fig. 1 again, the secondary water absorption tower 620 is fixedly connected to the alkali absorption device 700, the alkali absorption device 700 includes a primary alkali absorption tower 710 and a secondary alkali absorption tower 720, the secondary water absorption tower 620 is fixedly connected to the primary alkali absorption tower 710, the primary alkali absorption tower 710 is fixedly connected to the secondary alkali absorption tower 720, specifically, the secondary water absorption tower 620 is fixedly connected to the alkali absorption device 700, the alkali absorption device 700 includes the primary alkali absorption tower 710 and the secondary alkali absorption tower 720, the secondary water absorption tower 620 is communicated with the primary alkali absorption tower 710 through a pipeline, the primary alkali absorption tower 710 is communicated with the secondary alkali absorption tower 720 through a pipeline, and both the primary alkali absorption tower 710 and the secondary alkali absorption tower 720 are used for further absorbing the tail gas with the alkaline solution to remove the trace acid substances carried in the tail gas;
referring to fig. 1 again, the secondary alkali absorption tower 720 is fixedly connected to the electrostatic precipitator 800, specifically, the secondary alkali absorption tower 720 is connected to the electrostatic precipitator 800 through a pipeline, and the electrostatic precipitator 800 is used for removing dust through static electricity;
referring to fig. 1 again, the electrostatic precipitator tower 800 is fixedly connected to the exhaust tower 900, specifically, the electrostatic precipitator tower 800 is communicated with the exhaust tower 900 through a pipeline, and the exhaust tower 900 is used for exhausting tail gas;
when the device is used specifically, the waste catalyst and the reaction residual liquid generated in the production process of the refrigerant are introduced into a reaction residual liquid metering tank 100, then the reaction residual liquid in the reaction residual liquid metering tank 100 and the natural gas in a natural gas pipeline 200 are introduced into a high-temperature cracking furnace 300 together, the high-temperature cracking furnace 300 enables the fluorosulfonic acid waste catalyst to be decomposed into hydrogen fluoride and sulfuric acid at the temperature of 1100-1300 ℃ under the high-temperature condition, the polymer residual liquid generates CO2, water vapor and a small amount of HF through a waste heat boiler 400, the high-temperature cracked gas is cooled through a refrigeration tower 500, then is absorbed by water through a water absorption device 600 to become mixed acid containing HF and H2SO4, the tail gas is further absorbed by alkali liquor of an alkali absorption device 700, the trace acid substances carried by the tail gas are removed, then the dust is removed through an electrostatic dust removal tower 800, and then.
Referring to fig. 1 again, a liquid level sensor 110 is fixedly installed in the reaction residual liquid metering tank 100, specifically, the reaction residual liquid metering tank 100 is connected with the liquid level sensor 110 through a bolt and a thread, and the liquid level sensor 110 is used for sensing the liquid level height in the reaction residual liquid metering tank 100.
Referring to fig. 1 again, a check valve 210 is fixedly installed at a connection portion of the natural gas pipeline 200 and the pyrolysis furnace 300, specifically, the check valve 210 is embedded and connected at the connection portion of the natural gas pipeline 200 and the pyrolysis furnace 300, and the check valve 210 is used for preventing natural gas from flowing back.
Referring to fig. 1 again, in order to increase the service life of the pyrolysis furnace 300 and the exhaust-heat boiler 400, the insulating layers inside the pyrolysis furnace 300 and the exhaust-heat boiler 400 are both made of asbestos plates coated with hydrofluoric acid anticorrosive paint.
Referring again to fig. 1, in order for the pyrolysis furnace 300 to crack the spent catalyst and the reaction residue, the temperature of the pyrolysis furnace 300 is 1200 ℃.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the non-exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. A system for treating spent catalyst and raffinate from refrigerant production, comprising: reaction raffinate metering tank (100), natural gas pipeline (200), pyrolysis furnace (300), exhaust-heat boiler (400), cooling tower (500), water absorbing device (600), alkali absorbing device (700), electrostatic precipitator tower (800) and exhaust tower (900), reaction raffinate metering tank (100) with natural gas pipeline (200) equal fixed connection pyrolysis furnace (300), pyrolysis furnace (300) fixed connection exhaust-heat boiler (400), exhaust-heat boiler (400) fixed connection cooling tower (500), cooling tower (500) fixed connection water absorbing device (600), water absorbing device (600) includes one-level water absorbing tower (610) and second grade water absorbing tower (620), cooling tower (500) fixed connection one-level water absorbing tower (610), one-level water absorbing tower (610) fixed connection second grade water absorbing tower (620), second grade water absorption tower (620) fixed connection alkali absorbing device (700), alkali absorbing device (700) include one-level alkali absorption tower (710) and second grade alkali absorption tower (720), second grade water absorption tower (620) fixed connection one-level alkali absorption tower (710), one-level alkali absorption tower (710) fixed connection second grade alkali absorption tower (720), second grade alkali absorption tower (720) fixed connection electrostatic precipitator tower (800), electrostatic precipitator tower (800) fixed connection exhaust tower (900).
2. The system for treating spent catalyst and raffinate in refrigerant production as set forth in claim 1, wherein a level sensor (110) is fixedly installed in said reaction raffinate metering tank (100).
3. The system for treating spent catalyst and raffinate in refrigerant production as set forth in claim 1, wherein a check valve (210) is fixedly installed at a connection of said natural gas pipe (200) and said pyrolysis furnace (300).
4. The system for treating the waste catalyst and the residual liquid in the refrigerant production as claimed in claim 1, wherein the heat insulating layers inside the pyrolysis furnace (300) and the waste heat boiler (400) are both made of asbestos plate surface coated with hydrofluoric acid anticorrosive paint.
5. The system for treating spent catalyst and raffinate in refrigerant production as set forth in claim 1, wherein said pyrolysis furnace (300) is at a temperature of 1200 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020223990.6U CN212222462U (en) | 2020-02-28 | 2020-02-28 | System for treating waste catalyst and residual liquid in refrigerant production |
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| CN202020223990.6U CN212222462U (en) | 2020-02-28 | 2020-02-28 | System for treating waste catalyst and residual liquid in refrigerant production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116920319A (en) * | 2022-04-11 | 2023-10-24 | 中昊晨光化工研究院有限公司 | Method for treating byproducts in F142b production process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116920319A (en) * | 2022-04-11 | 2023-10-24 | 中昊晨光化工研究院有限公司 | Method for treating byproducts in F142b production process |
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