CN217962016U - Safety system for continuously absorbing light oil cracking gas - Google Patents
Safety system for continuously absorbing light oil cracking gas Download PDFInfo
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- CN217962016U CN217962016U CN202222296627.9U CN202222296627U CN217962016U CN 217962016 U CN217962016 U CN 217962016U CN 202222296627 U CN202222296627 U CN 202222296627U CN 217962016 U CN217962016 U CN 217962016U
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Abstract
The utility model provides a safety coefficient for absorb light oil pyrolysis gas in succession, including hydrogen cyanide production unit, raw materials supply unit, reaction unit, deamination unit, finished product storage unit and tail gas absorption unit. The hydrogen cyanide production unit is used for providing hydrogen cyanide gas; the raw material supply unit is used for providing a sodium hydroxide solution; the reaction unit is used for reacting the hydrogen cyanide gas provided by the hydrogen cyanide production unit with the sodium hydroxide solution provided by the raw material supply unit to generate sodium cyanide; the deamination unit is used for removing pseudo ammonia mixed in reaction products in the reaction unit; the finished product storage unit is used for storing the sodium cyanide subjected to deamination treatment by the deamination unit; the tail gas absorption unit is used for absorbing the gas generated by the reaction unit. The utility model provides a safety coefficient for continuous absorption light oil pyrolysis gas can solve among the prior art light oil cracking technology production sodium cyanide and the sodium cyanide quality that obtains can't obtain the problem of guarantee.
Description
Technical Field
The utility model belongs to the technical field of sodium cyanide production reaction unit, concretely relates to a safety coefficient for absorb light oil pyrolysis gas in succession.
Background
The sodium cyanide is prepared by cracking light oil and ammonia gas as main raw materials in a cracking furnace to generate cracked gas containing hydrogen cyanide, hydrogen, ammonia gas and other components, removing dust and cooling, and then absorbing with caustic soda. The process of absorbing and converting hydrogen cyanide gas produced by the light oil cracking process into sodium cyanide by sodium hydroxide is that a bubbling type intermittent production device is mostly adopted at present.
In the prior art, CN208260734U discloses a continuous absorption device for determining an absorption end point of sodium cyanide by using a pH meter, CN216458745U discloses a continuous absorption system for liquid sodium cyanide, and the technical solutions adopted in both publications can bring certain interference to the judgment of the monitoring result of the absorption end point (the absorption end point refers to a solution which enables the contents of sodium hydroxide and sodium cyanide to reach an appropriate ratio after sodium hydroxide solution absorbs sufficient hydrogen cyanide gas) due to high-concentration "pseudo ammonia" in sodium cyanide produced by a light oil cracking process (combining a molecule of water to be converted into ammonia water and then ionized to release hydroxyl ions), thereby further causing that the quality of sodium cyanide cannot be ensured, and the continuous production system has poor stability and poor practicability.
SUMMERY OF THE UTILITY MODEL
The utility model provides a safety coefficient for continuous absorption light oil pyrolysis gas aims at solving among the prior art light oil cracking technology production sodium cyanide and the sodium cyanide quality that obtains can't obtain the problem of guarantee.
In order to achieve the above object, the utility model adopts the following technical scheme: provided is a safety system for continuously absorbing light oil pyrolysis gas, comprising:
a hydrogen cyanide production unit having a first gas outlet for providing hydrogen cyanide gas;
a raw material supply unit having a first liquid outlet for providing a sodium hydroxide solution;
the reaction unit is communicated with the first gas outlet and the first liquid outlet and is used for allowing hydrogen cyanide gas provided by the hydrogen cyanide production unit to react with sodium hydroxide solution provided by the raw material supply unit to generate sodium cyanide;
the deamination unit is connected with a discharge hole of the reaction unit and is used for removing pseudo ammonia mixed in reaction products in the reaction unit;
the finished product storage unit is communicated with a discharge hole of the deamination unit and is used for storing the sodium cyanide subjected to deamination treatment by the deamination unit;
and the tail gas absorption unit is communicated with the gas outlet of the reaction unit and is used for absorbing the gas generated by the reaction unit.
In one possible implementation, the reaction unit includes a first reaction structure and a second reaction structure; the first reaction structure is provided with a first air inlet, a first liquid inlet, a second air outlet and a second liquid outlet, the first air inlet is communicated with the first air outlet, the first liquid inlet is communicated with the first liquid outlet, and the first reaction structure is used for carrying out primary reaction on hydrogen cyanide gas provided by the hydrogen cyanide production unit and sodium hydroxide solution provided by the raw material supply unit; the second reaction structure is provided with a second air inlet and a second liquid inlet, the second air inlet is communicated with the second air outlet and the first air outlet, the second liquid inlet is communicated with the second liquid outlet and the first liquid outlet, and the second reaction structure is used for carrying out secondary reaction on unreacted hydrogen cyanide gas led in by the first reaction structure.
In one possible implementation, the second reaction structure has a third gas outlet and a third liquid outlet; the deamination unit comprises a first deamination structure and a second deamination structure, wherein the first deamination structure is communicated with the second liquid outlet and is used for removing pseudo ammonia mixed in a reaction product in the first reaction structure; and the second deamination structure is communicated with the third liquid outlet and is used for removing pseudo ammonia mixed in reaction products in the second reaction structure.
In one possible implementation, the first reaction structure includes a first falling film absorber and a first reaction vessel; the first falling film absorber has a third gas inlet and a fourth gas outlet; the third gas inlet is communicated with the first gas outlet and is used for introducing hydrogen cyanide gas provided by the hydrogen cyanide production unit into the first reaction kettle; the first reaction kettle is communicated with the fourth gas outlet and the first liquid outlet, and the first reaction kettle is used for allowing hydrogen cyanide gas provided by the hydrogen cyanide production unit to react with sodium hydroxide solution provided by the raw material supply unit.
In one possible implementation, the first reaction structure further includes a first thermometer and a first liquid level meter; the first thermometer is arranged at the bottom of the first reaction kettle and used for monitoring the temperature of the materials in the first reaction kettle; the first liquid level meter is arranged at the top of the first reaction kettle and used for monitoring the material liquid level in the first reaction kettle.
In one possible implementation, the second reaction structure includes a second falling film absorber and a second reaction kettle; the second falling film absorber is provided with a fourth air inlet and a fifth air outlet, the fourth air inlet is communicated with the first reaction kettle and is used for guiding unreacted hydrogen cyanide gas in the first reaction kettle into the second reaction kettle; the second reaction kettle is communicated with the fifth gas outlet and the first liquid outlet and is used for supplying unreacted hydrogen cyanide gas led in the first reaction kettle to react.
In one possible implementation, the second reaction structure further includes a second thermometer and a second level gauge; the second thermometer is arranged at the bottom of the second reaction kettle and used for monitoring the temperature of the materials in the second reaction kettle; and the second liquid level meter is arranged at the top of the second reaction kettle and is used for monitoring the material liquid level in the second reaction kettle.
In one possible implementation manner, the safety system for continuously absorbing light oil pyrolysis gas further comprises a control unit, and the control unit is electrically connected with the hydrogen cyanide production unit, the raw material supply unit and the reaction unit.
The utility model provides a safety coefficient for absorb light oil pyrolysis gas in succession's beneficial effect lies in: compared with the prior art, the hydrogen cyanide gas is provided for the reaction unit through the hydrogen cyanide production unit, and the sodium hydroxide solution is provided for the reaction unit through the raw material supply unit, so that the hydrogen cyanide gas and the sodium hydroxide solution react in the reaction unit to produce sodium cyanide. Meanwhile, a discharge port of the reaction unit is connected with the deamination unit, and the deamination unit removes pseudo ammonia mixed in reaction products in the reaction unit, so that the phenomenon that the high-concentration pseudo ammonia in the sodium cyanide absorption liquid exists to influence the judgment of the absorption degree result is avoided. And the tail gas absorption unit is connected with the reaction unit and is used for absorbing gas generated by the reaction unit and residual hydrogen cyanide gas, so that the environmental pollution caused by directly discharging the gas into the air is avoided. And finally, the reaction product treated by the deamination unit is stored in a finished product storage unit, so that the later purification and retreatment process of sodium cyanide is omitted, the cost is saved, the operation is convenient and fast, and the practicability is good.
Drawings
Fig. 1 is a schematic structural diagram of a safety system for continuously absorbing light oil cracked gas according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a first reaction structure of a safety system for continuously absorbing light oil cracked gas according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a second reaction structure of the safety system for continuously absorbing light oil cracked gas according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a deamination unit of a safety system for continuously absorbing light oil cracked gas according to an embodiment of the present invention.
Description of reference numerals:
10. a hydrogen cyanide production unit; 20. a raw material supply unit; 30. a reaction unit; 31. a first reaction structure; 311. a first falling film absorber; 312. a first reaction kettle; 3121. a first cooling device; 313. a first thermometer; 314. a first liquid level meter; 32. a second reaction structure; 321. a second falling film absorber; 322. a second reaction kettle; 3221. a second cooling device; 323. a second thermometer; 324. a second level gauge; 40. a deamination unit; 41. a sulfuric acid desorbent circulation tank; 42. a gaseous deamination membrane module; 50. a finished product storage unit; 60. and a tail gas absorption unit.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that the terms "length," "width," "height," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," "tail," and the like, are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Further, "plurality" or "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 to 4, a safety system for continuously absorbing cracked gas of light oil according to the present invention will now be described. The safety system for continuously absorbing light oil pyrolysis gas comprises a hydrogen cyanide production unit 10, a raw material supply unit 20, a reaction unit 30, a deamination unit 40, a finished product storage unit 50 and a tail gas absorption unit 60. The hydrogen cyanide production unit 10 has a first gas outlet for supplying hydrogen cyanide gas. The raw material supply unit 20 has a first liquid outlet for supplying a sodium hydroxide solution. The reaction unit 30 is communicated with the first gas outlet and the first liquid outlet. The reaction unit 30 is used for reacting the hydrogen cyanide gas supplied from the hydrogen cyanide production unit 10 with the sodium hydroxide solution supplied from the raw material supply unit 20 to produce sodium cyanide. The deammoniation unit 40 is connected with the discharge port of the reaction unit 30 and is used for removing pseudo ammonia mixed in the reaction product in the reaction unit 30. The finished product storage unit 50 is communicated with a discharge hole of the deamination unit 40 and is used for storing the sodium cyanide subjected to deamination by the deamination unit 40. The tail gas absorption unit 60 is communicated with the gas outlet of the reaction unit 30, and is used for absorbing the gas generated by the reaction unit 30.
The embodiment of the utility model provides a safety coefficient for continuously absorbing light oil pyrolysis gas compares with prior art, provides hydrogen cyanide gas for reaction unit 30 through hydrogen cyanide production unit 10, and raw materials supply unit 20 provides sodium hydroxide solution for reaction unit 30 to make hydrogen cyanide gas and sodium hydroxide solution react in reaction unit 30 and produce sodium cyanide. Meanwhile, the discharge port of the reaction unit 30 is connected with the deamination unit 40, and the deamination unit 40 removes the pseudo ammonia mixed in the reaction product in the reaction unit 30, so that the phenomenon that the judgment of the absorption degree result is influenced by the existence of high-concentration pseudo ammonia in the sodium cyanide absorption liquid is avoided. And the tail gas absorption unit 60 is connected with the reaction unit 30, and the tail gas absorption unit 60 is used for absorbing the gas generated by the reaction unit 30 and the residual hydrogen cyanide gas, so as to avoid directly discharging the gas into the air to cause environmental pollution. And finally, the reaction product treated by the deamination unit 40 is stored in the finished product storage unit 50, so that the later purification and retreatment process of sodium cyanide is omitted, the cost is saved, the operation is convenient and fast, and the practicability is good.
In some embodiments, the hydrogen cyanide production unit 10 is in communication with the reaction unit 30 via a pipeline, and the pipeline is provided with a switch valve for controlling the on-off of the pipeline and a regulating valve for controlling the flow rate of the gas in the pipeline. The switch valve and the regulating valve are matched for use, so that the control and the operation are convenient, the reaction unit 30 can be freely switched between the intermittent absorption and the continuous absorption, and the condition that the reaction unit 30 breaks down in the operation process and needs to be stopped to overhaul to influence the stable operation of the safety system for continuously absorbing the light oil pyrolysis gas is avoided.
In some embodiments, referring to fig. 1, the reaction cell 30 includes a first reaction structure 31 and a second reaction structure 32. The first reaction structure 31 has a first air inlet, a first liquid inlet, a second air outlet and a second liquid outlet. The first air inlet is communicated with the first air outlet, and the first liquid inlet is communicated with the first liquid outlet. The first reaction structure 31 is used for performing a primary reaction between the hydrogen cyanide gas supplied from the hydrogen cyanide production unit 10 and the sodium hydroxide solution supplied from the raw material supply unit 20. The second reaction structure 32 has a second gas inlet and a second liquid inlet. The second gas inlet is communicated with the first gas outlet and the second gas outlet, the second liquid inlet is communicated with the first liquid outlet and the second liquid outlet, and the second reaction structure 32 is used for carrying out secondary reaction on unreacted hydrogen cyanide gas in the first reaction structure 31. In this embodiment, the hydrogen cyanide gas and the sodium hydroxide are subjected to a first reaction in the first reaction structure 31, and then the unreacted hydrogen cyanide gas in the first reaction structure 31 enters the second reaction structure 32 through the second gas inlet to undergo a second reaction, and meanwhile, the second gas inlet is communicated with the first gas outlet, and the second liquid inlet is communicated with the first liquid outlet, so that the hydrogen cyanide gas can be provided for the second reaction in the second reaction structure 32 through the hydrogen cyanide production unit 10.
It should be noted that, the reaction unit includes a first reaction structure 31 and a second reaction structure 32, when the material in the first reaction structure 31 is subjected to a first reaction and then introduced into the second reaction structure 32 for a second reaction, and then the product after the second reaction is introduced into the finished product storage unit 50 for storage, this process is a continuous absorption process. Close second air inlet and second inlet, open first inlet and first air inlet, utilize first reaction structure 31 to react, after the reaction reaches the terminal point, close first inlet and first air inlet, second air inlet and second inlet are opened, react through second reaction structure 32, after the reaction in second reaction structure 32 reaches the terminal point, close second air inlet and second inlet, open first inlet and first air inlet again, first reaction structure 31 and second reaction structure 32 take turns and react in turn, this process is intermittent absorption process. The connecting pipelines of the hydrogen cyanide production unit 10, the raw material supply unit 20 and the reaction unit 30 are all provided with control valves, when the hydrogen cyanide production unit 10 breaks down, the reaction unit 30 can be switched between two reaction states of intermittent absorption and continuous absorption through the control valves, so that the problem of sodium cyanide red material caused by misoperation or poor system stability is avoided, and further, the basic condition is laid for ensuring the production quality of sodium cyanide.
In some embodiments, referring to fig. 1, the second reaction structure 32 has a third gas outlet and a third liquid outlet. Deamination unit 40 includes a first deamination structure and a second deamination structure. The first deamination structure is communicated with the second liquid outlet and is used for removing pseudo ammonia mixed in the reaction product in the first reaction structure 31. The second deamination structure is communicated with the third liquid outlet and is used for removing pseudo ammonia mixed in the reaction product in the second reaction structure 32. In this embodiment, the first deamination structure and the second deamination structure respectively absorb the pseudo ammonia in the first reaction structure 31 and the second reaction structure 32, so as to ensure the quality of the sodium cyanide generated by the reaction.
In the above embodiment, the first deamination structure includes a gaseous deamination membrane module 42 and a sulfuric acid desorbent recycle tank 41. Pseudo ammonia mixed in reaction products generated in the primary reaction is absorbed through the gaseous deamination membrane component 42 and the sulfuric acid desorbent circulating tank 41, so that interference of the pseudo ammonia on the primary reaction is avoided. The second deamination structure is the same as the first deamination structure, and is used for removing the pseudo ammonia mixed in the reaction product in the second reaction structure 32, and the finally obtained sodium cyanide finished product enters the finished product storage unit 50 for storage, so that the subsequent sodium cyanide finished product treatment process can be omitted, and the subsequent sodium cyanide treatment cost is greatly reduced.
In some embodiments, referring to fig. 1 and 2, the first reaction structure 31 includes a first falling film absorber 311 and a first reaction vessel 312. The first falling film absorber 311 has a third gas inlet and a fourth gas outlet, and the third gas inlet is communicated with the first gas outlet and is used for introducing the hydrogen cyanide gas provided by the hydrogen cyanide production unit 10 into the first reaction kettle 312. The first reaction vessel 312 is communicated with the fourth gas outlet and the first liquid outlet, and the first reaction vessel 312 is used for allowing the hydrogen cyanide gas provided by the hydrogen cyanide production unit 10 to react with the sodium hydroxide solution provided by the raw material supply unit 20. In this embodiment, hydrogen cyanide gas is introduced into the first reaction vessel 312 through the first falling film absorber 311, so that the hydrogen cyanide gas reacts with the sodium hydroxide solution to produce sodium cyanide.
In some embodiments, referring to FIG. 2, the first reaction structure 31 further comprises a first thermometer 313 and a first liquid level gauge 314. A first thermometer 313 is disposed at the bottom of the first reaction vessel 312 for monitoring the temperature of the contents of the first reaction vessel 312. A first level gauge 314 is disposed at the top of first reactor 312 for monitoring the level of material in first reactor 312. In this embodiment, through the material temperature in first reation kettle 312 of first thermometer 313 monitoring, be convenient for in time adjust the material temperature in first reation kettle 312 to the too high decomposition problem appears in leading to sodium cyanide and intermediate material of resulting in of temperature, the temperature crosses lowly and leads to the solubility grow of ammonia, causes the pseudo ammonia concentration in sodium cyanide and the intermediate material too high, influences the steady operation of the follow-up processing system of sodium cyanide. Through setting up first level gauge 314 in first reation kettle 312, first level gauge 314 is the digital display level gauge, is located the top of first reation kettle 312 for carry out real-time supervision to the material liquid level in first reation kettle 312, through the demonstration numerical value of digital display level gauge, the normal clear of reaction among the real time control first reation kettle 312.
In some embodiments, referring to fig. 3, the second reaction vessel 322 includes a second falling film absorber 321 and a second reaction vessel 322. The second falling film absorber 321 has a fourth gas inlet and a fifth gas outlet, and the fourth gas inlet is communicated with the first reaction kettle 312 and is used for introducing the unreacted hydrogen cyanide gas in the first reaction kettle 312 into the second reaction kettle 322. The second reaction kettle 322 is communicated with the fifth gas outlet and the first liquid outlet, and the second reaction kettle 322 is used for allowing unreacted hydrogen cyanide gas introduced into the first reaction kettle 312 to react. In this embodiment, the unreacted hydrogen cyanide gas in the first reactor is introduced into the second reactor through the second falling film absorber, and reacts with the sodium hydroxide to generate sodium cyanide, so that the hydrogen cyanide gas is more sufficiently absorbed, and the practicability is good.
In some embodiments, referring to FIG. 3, the second reaction structure 32 further comprises a second temperature gauge 323 and a second liquid level gauge 324. A second thermometer 323 is disposed at the bottom of the second reaction vessel 322 for monitoring the temperature of the contents of the second reaction vessel 322. A second level meter 324 is disposed at the top of the second reaction vessel 322 for monitoring the material level in the second reaction vessel 322. In this embodiment, the material temperature in the second reaction kettle 322 is monitored by the second thermometer 323, so that the material temperature in the second reaction kettle 322 can be adjusted in time, the problem of decomposition of sodium cyanide and intermediate materials caused by overhigh temperature can be avoided, the solubility of ammonia caused by overlow temperature can be increased, the concentration of pseudo ammonia in sodium cyanide and intermediate materials is overhigh, and the stable operation of a subsequent sodium cyanide treatment system can be influenced. Through setting up second level gauge 324 in second reation kettle 322, second level gauge 324 is the digital display level gauge, is located second reation kettle 322's top for carry out real-time supervision to the material liquid level in second reation kettle 322, through the demonstration numerical value of digital display level gauge, the normal clear of reaction among the real time control second reation kettle 322.
In some embodiments, the safety system for continuously absorbing light oil cracked gas provided by the embodiments of the present invention further includes a control unit. The control unit is electrically connected with the hydrogen cyanide production unit 10, the raw material supply unit 20 and the reaction unit 30 respectively to realize the automation of the reaction process, the stability is strong, and the quality of the sodium cyanide product can be ensured.
In some embodiments, a first temperature reduction device 3121 is disposed in the first reaction vessel 312, and a second temperature reduction device 3221 is disposed in the second reaction vessel 322. Circulating water with the temperature of 28-33 ℃ is filled in the first temperature reducing device 3121 and the second temperature reducing device 3221. Sodium hydroxide in first reation kettle 312 and the second reation kettle 322 can emit certain heat at the in-process of absorbing hydrogen cyanide, is equipped with first heat sink 3121 in first reation kettle 312, is equipped with second heat sink 3221 in the second reation kettle 322 to make the heat of emitting in first reation kettle 312 and the second reation kettle 322 in time shift, and then make the continuous operation of reaction unit 30 stable.
In some embodiments, a third coil cooling device is disposed in the finished product storage unit 50, and a condensing medium of 7 ℃ is introduced into the third coil cooling device, so that the finished sodium cyanide product can be always stored at a low temperature, thereby preventing the storage temperature of sodium cyanide from being too high, accelerating the decomposition of the finished sodium cyanide product, and converting the decomposed sodium cyanide product into sodium formate and ammonia, thereby affecting the quality of the finished sodium cyanide product.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A safety system for continuous absorption of light oil cracked gas, characterized by comprising:
a hydrogen cyanide production unit having a first gas outlet for providing hydrogen cyanide gas;
a raw material supply unit having a first liquid outlet for providing a sodium hydroxide solution;
the reaction unit is communicated with the first gas outlet and the first liquid outlet and is used for allowing hydrogen cyanide gas provided by the hydrogen cyanide production unit to react with the sodium hydroxide solution provided by the raw material supply unit to generate sodium cyanide;
the deamination unit is connected with a discharge hole of the reaction unit and is used for removing pseudo ammonia mixed in reaction products in the reaction unit;
the finished product storage unit is communicated with a discharge hole of the deamination unit and is used for storing the sodium cyanide subjected to deamination treatment by the deamination unit;
and the tail gas absorption unit is communicated with the gas outlet of the reaction unit and is used for absorbing the gas generated by the reaction unit.
2. The safety system for continuously absorbing a light oil cracked gas according to claim 1, wherein the reaction unit includes a first reaction structure and a second reaction structure; the first reaction structure is provided with a first air inlet, a first liquid inlet, a second air outlet and a second liquid outlet, the first air inlet is communicated with the first air outlet, the first liquid inlet is communicated with the first liquid outlet, and the first reaction structure is used for carrying out primary reaction on hydrogen cyanide gas provided by the hydrogen cyanide production unit and sodium hydroxide solution provided by the raw material supply unit; the second reaction structure is provided with a second air inlet and a second liquid inlet, the second air inlet is communicated with the second air outlet and the first air outlet, the second liquid inlet is communicated with the second liquid outlet and the first liquid outlet, and the second reaction structure is used for carrying out secondary reaction on unreacted hydrogen cyanide gas led in by the first reaction structure.
3. The safety system for continuously absorbing a light oil cracked gas as claimed in claim 2, wherein the second reaction structure has a third gas outlet and a third liquid outlet; the deamination unit comprises a first deamination structure and a second deamination structure, and the first deamination structure is communicated with the second liquid outlet and is used for removing pseudo ammonia mixed in reaction products in the first reaction structure; and the second deamination structure is communicated with the third liquid outlet and is used for removing pseudo ammonia mixed in reaction products in the second reaction structure.
4. The safety system for continuously absorbing light oil pyrolysis gas according to claim 2, wherein the first reaction structure comprises a first falling film absorber and a first reaction kettle; the first falling film absorber has a third gas inlet and a fourth gas outlet; the third gas inlet is communicated with the first gas outlet and is used for introducing hydrogen cyanide gas provided by the hydrogen cyanide production unit into the first reaction kettle; the first reaction kettle is communicated with the fourth gas outlet and the first liquid outlet, and the first reaction kettle is used for allowing hydrogen cyanide gas provided by the hydrogen cyanide production unit to react with sodium hydroxide solution provided by the raw material supply unit.
5. The safety system for continuously absorbing a light oil cracked gas according to claim 4, wherein the first reaction structure further comprises a first thermometer and a first liquid level meter; the first thermometer is arranged at the bottom of the first reaction kettle and used for monitoring the temperature of materials in the first reaction kettle; the first liquid level meter is arranged at the top of the first reaction kettle and used for monitoring the material liquid level in the first reaction kettle.
6. The safety system for continuously absorbing light oil pyrolysis gas according to claim 4, wherein the second reaction structure comprises a second falling film absorber and a second reaction kettle; the second falling film absorber is provided with a fourth gas inlet and a fifth gas outlet, the fourth gas inlet is communicated with the first reaction kettle and is used for guiding unreacted hydrogen cyanide gas in the first reaction kettle into the second reaction kettle; the second reaction kettle is communicated with the fifth gas outlet and the second liquid outlet, and the second reaction kettle is used for allowing unreacted hydrogen cyanide gas introduced into the first reaction kettle to react.
7. The safety system for continuously absorbing a light oil cracked gas according to claim 6, wherein the second reaction structure further comprises a second thermometer and a second liquid level meter; the second thermometer is arranged at the bottom of the second reaction kettle and used for monitoring the temperature of the materials in the second reaction kettle; and the second liquid level meter is arranged at the top of the second reaction kettle and is used for monitoring the material liquid level in the second reaction kettle.
8. The safety system for continuously absorbing a light oil cracked gas according to claim 1, further comprising a control unit electrically connected to the hydrogen cyanide production unit, the raw material supply unit, and the reaction unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222296627.9U CN217962016U (en) | 2022-08-30 | 2022-08-30 | Safety system for continuously absorbing light oil cracking gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222296627.9U CN217962016U (en) | 2022-08-30 | 2022-08-30 | Safety system for continuously absorbing light oil cracking gas |
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| CN217962016U true CN217962016U (en) | 2022-12-06 |
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