CN114405257A - Propellant waste gas treatment device and method based on multistage pressure-stabilizing vacuum homogenization technology - Google Patents
Propellant waste gas treatment device and method based on multistage pressure-stabilizing vacuum homogenization technology Download PDFInfo
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- CN114405257A CN114405257A CN202111590296.3A CN202111590296A CN114405257A CN 114405257 A CN114405257 A CN 114405257A CN 202111590296 A CN202111590296 A CN 202111590296A CN 114405257 A CN114405257 A CN 114405257A
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Abstract
The invention relates to a propellant waste gas treatment device and method based on a multi-stage pressure-stabilizing vacuum homogenization technology, and aims to solve the technical problem that the existing single-stage treatment of propellant waste gas cannot meet the waste gas treatment requirement. The device comprises a reaction chamber, a reaction chamber and a reaction chamber, wherein the reaction chamber is divided into a first-stage reaction chamber and a second-stage reaction chamber along the direction of a central axis; the first-stage reaction chamber, the first-stage cache tank, the first-stage ejector pump and the at least one first-stage ejector are used for carrying out first-stage treatment on waste gas; the secondary reaction chamber, the secondary cache tank, the secondary ejector pump and at least one secondary ejector are used for carrying out secondary treatment on the waste gas after the primary treatment. The method comprises the following steps: 1. filling absorption liquid medicine into the reaction chamber; 2. injecting waste gas into the first-level cache tank; 3. a first gas-liquid mixed flow is formed in the first-stage ejector and enters the first-stage reaction chamber for reaction, and then enters the second-stage cache tank; 5. and a second gas-liquid mixed flow is formed in the secondary ejector, enters the secondary reaction chamber, reacts and is discharged.
Description
Technical Field
The invention relates to a propellant waste gas treatment device, in particular to a propellant waste gas treatment device and method based on a multi-stage pressure-stabilizing vacuum homogenization technology.
Background
The existing conventional rocket propellant waste gas treatment equipment is generally single-stage treatment, the treatment capacity and the treatment efficiency of the conventional rocket propellant waste gas treatment equipment cannot meet the treatment requirements of the existing rocket propellant waste gas, and the automation and the advancement degree are not high. Therefore, the prior conventional rocket propellant waste gas treatment equipment needs to be optimized and improved.
Disclosure of Invention
The invention aims to solve the technical problem that the single-stage treatment of the waste gas of the existing propellant cannot meet the requirement of waste gas treatment, and provides a propellant waste gas treatment device and method based on a multi-stage pressure-stabilizing vacuum homogenization technology.
The technical scheme of the invention is as follows:
a propellant waste gas treatment device based on a multistage pressure-stabilizing vacuum homogenization technology is characterized in that: the device comprises a reaction chamber, a first-level cache tank, a first-level ejector pump, at least one first-level ejector, a second-level cache tank, a second-level ejector pump and at least one second-level ejector;
the reaction chamber is divided into a first-stage reaction chamber and a second-stage reaction chamber by a partition plate along the direction of a central axis;
the first-stage reaction chamber comprises a first gas-liquid inlet, a first exhaust port and a first medicine feeding port which are arranged at the top, and a first liquid outlet and a first exhaust port which are arranged at the bottom; the first-level cache tank comprises a first air inlet and a first air outlet, and the first air inlet of the first-level cache tank is used for receiving a waste gas discharge port to be treated; the liquid inlet of the primary injection pump is connected with the first liquid outlet of the primary reaction chamber, and the liquid outlet of the primary injection pump is connected with the liquid inlet of the primary injector; the gas inlet of the first-level ejector is connected with the first gas outlet of the first-level cache tank, and the gas-liquid outlet of the first-level ejector is connected with the first gas-liquid inlet of the first-level reaction chamber;
the second-stage reaction chamber comprises a second gas-liquid inlet, a second exhaust port, a second medicine adding port, a second liquid outlet and a second emptying port, wherein the second gas-liquid inlet, the second exhaust port and the second medicine adding port are arranged at the top of the second-stage reaction chamber; the second-level cache tank comprises a second air inlet and a second air outlet, and the second air inlet of the second-level cache tank is connected with the first air outlet of the first-level reaction chamber; a liquid inlet of the secondary ejector pump is connected with a second liquid outlet of the secondary reaction chamber, and a liquid outlet of the secondary ejector pump is connected with a liquid inlet of the secondary ejector; and the gas inlet of the secondary ejector is connected with the second gas outlet of the secondary cache tank, and the gas-liquid outlet of the secondary ejector is connected with the second gas-liquid inlet of the secondary reaction chamber.
The reaction chamber further comprises a first-stage auxiliary liquid tank and a second-stage auxiliary liquid tank, wherein the first-stage auxiliary liquid tank and the second-stage auxiliary liquid tank are arranged below two sides of the reaction chamber;
the upper end of the first-stage auxiliary liquid tank is communicated with the upper end of the first-stage reaction chamber through at least one first pressure stabilizing pipeline, the bottom end of the first-stage auxiliary liquid tank is communicated with the bottom end of the first-stage reaction chamber through the first auxiliary pipeline, the upper end of the second-stage auxiliary liquid tank is communicated with the upper end of the second-stage reaction chamber through at least one second pressure stabilizing pipeline, and the bottom end of the second-stage auxiliary liquid tank is communicated with the bottom end of the second-stage reaction chamber through the second auxiliary pipeline.
Further, the primary reaction chamber is divided into a primary first sub-reaction chamber, a primary second sub-reaction chamber and a primary third sub-reaction chamber by a first baffle plate and a second baffle plate which are vertical to the central axis direction;
the first baffle plate divides the first-stage first sub-reaction chamber and the second-stage second sub-reaction chamber, and a first channel is arranged at the bottom end of the first baffle plate; the second baffle plate divides the first-stage second sub-reaction chamber and the first-stage third sub-reaction chamber, a second channel is arranged at the upper end of the second baffle plate, and a fifth channel is arranged at the lower end of the second baffle plate; the first channel and the fifth channel form a through channel for absorbing liquid medicine in the primary reaction chamber, and the second channel is a gas channel after gas-liquid separation in the primary reaction chamber;
the second-stage reaction chamber is divided into a second-stage first sub-reaction chamber, a second-stage second sub-reaction chamber and a second-stage third sub-reaction chamber by a third baffle plate and a fourth baffle plate which are vertical to the central axis direction;
the third baffle plate divides the second-stage first sub-reaction chamber and the second-stage second sub-reaction chamber, and a third channel is arranged at the bottom end of the third baffle plate; the fourth baffle plate divides the second-stage second sub-reaction chamber and the second-stage third sub-reaction chamber, a fourth channel is arranged at the upper end of the fourth baffle plate, and a sixth channel is arranged at the lower end of the fourth baffle plate; the third channel and the sixth channel form a liquid medicine absorption through channel in the secondary reaction chamber, and the fourth channel is a gas channel after gas-liquid separation in the secondary reaction chamber;
the first gas-liquid inlet is arranged in the first sub-reaction chamber of the first stage, and the first exhaust port is arranged in the third sub-reaction chamber of the first stage;
the second gas-liquid inlet is arranged in the second-stage first sub-reaction chamber, and the second exhaust port is arranged in the second-stage third sub-reaction chamber.
Further, a first rotating wheel assembly is arranged in the first-stage first sub-reaction chamber;
the first rotating wheel assembly comprises a first support frame fixed in the first-stage first sub-reaction chamber and a plurality of first rotating wheels arranged on the first support frame;
the first rotating wheels are arranged on the first support frame in multiple layers, multiple rows are arranged on each layer, and the rotating directions of the rotating wheels on two adjacent layers are different;
under the working state, the first rotating wheel component is immersed in the absorption liquid medicine.
Further, the second-stage first sub-reaction chamber is provided with a second rotating wheel assembly;
the second rotating wheel assembly comprises a second supporting frame fixed in the second-stage first sub-reaction chamber and a plurality of second rotating wheels arranged on the second supporting frame;
the second rotating wheels are arranged on the second supporting frame in multiple layers, multiple rows are arranged on each layer, and the rotating directions of the rotating wheels on two adjacent layers are different;
under the working state, the second rotating wheel assembly is immersed in the absorption liquid medicine.
Further, the device also comprises a primary reflux valve and a secondary reflux valve;
the first-stage reaction chamber also comprises a first backflow port arranged at the top of the first-stage third sub-reaction chamber, the first backflow port is connected with the air inlet of the first-stage ejector through a first backflow pipeline, and the first-stage backflow valve is arranged on the first backflow pipeline;
the second-stage reaction chamber also comprises a second backflow port arranged at the top of the second-stage third sub-reaction chamber, the second backflow port is connected with the air inlet of the second-stage ejector through a second backflow pipeline, and the second-stage backflow valve is arranged on the second backflow pipeline;
the first return pipeline is communicated with the second return pipeline, and an adjustable communicating valve is arranged between the first return pipeline and the second return pipeline.
The device further comprises a primary flow cell and a secondary flow cell, wherein a primary liquid level meter is arranged at one end of the outer side of the primary reaction chamber and is connected with the reaction chamber through a primary liquid level monitoring pipeline; a second-stage liquid level meter is arranged at one end of the outer side of the second-stage reaction chamber and is connected with the reaction chamber through a second-stage liquid level monitoring pipeline;
the liquid outlet of the primary ejector pump is also connected with one end of a primary flow cell, and the other end of the primary flow cell is connected with a primary liquid level monitoring pipeline; and the liquid outlet of the secondary ejector pump is also connected with one end of a secondary flow cell, and the other end of the secondary flow cell is connected with a secondary liquid level monitoring pipeline.
Further, the device also comprises a first-stage pH meter and a second-stage pH meter;
the first-stage pH meter is arranged in the first-stage flow cell and used for monitoring the pH value of the absorption liquid medicine in the first-stage reaction chamber, and the second-stage pH meter is arranged in the second-stage flow cell and used for monitoring the pH value of the absorption liquid medicine in the second-stage reaction chamber.
The invention also provides a propellant waste gas treatment method based on the multistage voltage-stabilizing vacuum homogenization technology, which is characterized in that the propellant waste gas treatment device based on the multistage voltage-stabilizing vacuum homogenization technology comprises the following steps:
s1, adding an absorption liquid medicine for absorbing the waste gas into the primary reaction chamber and the secondary reaction chamber;
s2, introducing the waste gas into a first-level cache tank for caching;
s3, under the action of a primary ejector pump, absorbing liquid medicine in the primary reaction chamber enters a primary ejector, meanwhile, ejecting waste gas enters the primary ejector, and a first gas-liquid mixed flow is formed in the primary ejector;
s4, enabling the first gas-liquid mixed flow to enter a first-stage reaction chamber to perform gas-liquid reaction and gas-liquid separation to form first-stage processed gas, and enabling the first-stage processed gas to enter a second-stage cache tank through a first exhaust port to be cached;
s5, under the action of a secondary ejector pump, enabling the absorption liquid medicine in the secondary reaction chamber to enter a secondary ejector, enabling the primary treated gas in the secondary buffer tank to enter the secondary ejector, and forming a second gas-liquid mixed flow in the secondary ejector;
and S6, enabling the second gas-liquid mixed flow to enter the secondary reaction chamber for gas-liquid reaction and gas-liquid separation, so that pollutants in the gas are absorbed to form secondary treated gas, discharging the secondary treated gas from a second exhaust port of the secondary reaction chamber, and finishing waste gas treatment.
Further, a part of the gas after the primary treatment in the step S4 enters the primary ejector through the primary reflux valve, is mixed with the first gas-liquid mixed flow, and then is repeatedly subjected to a gas-liquid reaction and a gas-liquid separation process in the primary reaction chamber;
and S6, allowing a part of the gas after the secondary treatment to enter the secondary ejector through the secondary return valve, mixing the part of the gas with the second gas-liquid mixed flow, and repeating the gas-liquid reaction and gas-liquid separation process in the secondary reaction chamber.
The invention has the beneficial effects that:
1. the invention adopts the two-stage waste gas treatment device to treat the waste gas generated by the propellant, the waste gas treatment efficiency is increased, the air pressure buffering effect of the buffer tank is realized, the device is suitable for large-flow air inlet, the single-time operation time is long, and the replacement frequency of the absorbed liquid medicine is reduced.
2. The reaction chamber is axially divided into the first-stage reaction chamber and the second-stage reaction chamber, so that on one hand, the integration degree is increased, the device has a compact structure, and the waste gas treatment effect is better; on the other hand, the first-stage reaction chamber and the second-stage reaction chamber are both axially extended reaction chambers, so that the residence time of gas-liquid reaction is increased, and the gas-liquid reaction is more sufficient.
3. The invention increases the stability and reliability of the system operation through the auxiliary pipeline arranged at the auxiliary liquid tank and communicated with the bottom end of the reaction chamber and the pressure stabilizing pipeline arranged at the auxiliary liquid tank and communicated with the upper end of the reaction chamber.
Drawings
FIG. 1 is a schematic structural diagram of a propellant waste gas treatment device based on a multistage pressure-stabilizing vacuum homogenization technology according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a propellant waste gas treatment device based on a multistage pressure-stabilizing vacuum homogenization technology according to an embodiment of the present invention;
FIG. 3 is an end view of a propellant waste gas treatment device based on a multistage pressure-stabilizing vacuum homogenization technique according to an embodiment of the present invention;
FIG. 4 is a side view of a propellant waste gas treatment device based on a multistage pressure-stabilizing vacuum homogenization technology according to an embodiment of the present invention;
FIG. 5 is a top view of a propellant waste gas treatment device based on a multi-stage pressure-stabilizing vacuum homogenization technique according to an embodiment of the present invention;
FIG. 6 is a perspective view of a wheel assembly according to an embodiment of the present invention;
FIG. 7 is a side view of a wheel assembly in an embodiment of the present invention;
fig. 8 is a top view of a wheel assembly in an embodiment of the present invention.
The reference numbers are as follows:
1-an exhaust gas source, 2-an air inlet control valve, 3-a first-stage cache tank, 4-a first-stage ejector, 5-a first-stage return valve, 6-a communication valve, 7-a second-stage return valve, 8-a second-stage ejector, 9-a second-stage cache tank, 10-a first-stage pH meter, 11-a second-stage pH meter, 13-a first-stage ejector pump, 14-a reaction chamber, 141-a first-stage reaction chamber, 142-a second-stage reaction chamber, 15-a second-stage ejector pump, 16-a first-stage auxiliary liquid tank, 17-a second-stage auxiliary liquid tank, 18-a second pressure stabilizing pipeline, 19-a first air inlet, 22-a second air outlet, 23-a first support frame and 24-a first rotating wheel.
Detailed Description
The embodiment provides a propellant exhaust treatment device based on multistage steady voltage vacuum homogenization technique, the device includes the reaction chamber 14, set up one-level buffer tank 3 and second grade buffer tank 9 in reaction chamber 14 upper end both sides, set up two one-level ejectors 4 and two second grade ejectors 8 in reaction chamber 14 upper end, one-level ejector pump 13 and second grade ejector pump 15 that connect with one-level ejector 4 and second grade ejector 8 respectively, and set up and assist liquid case 16 and second grade and assist liquid case 17 reaction chamber 14 and be separated into one-level reaction chamber 141 and second grade reaction chamber 142 along the central axis direction at the one-level of reaction chamber 14 lower extreme both sides by the division board.
The first-stage reaction chamber 141 is divided into a first-stage first sub-reaction chamber, a first-stage second sub-reaction chamber and a first-stage third sub-reaction chamber by a first baffle plate and a second baffle plate which are vertical to the central axis direction; the first baffle plate divides the first-stage first sub-reaction chamber and the second-stage second sub-reaction chamber, and a first gas channel is arranged at the bottom end of the first baffle plate; the first baffle plate divides the first-stage first sub-reaction chamber and the first-stage second sub-reaction chamber, a first channel is arranged at the upper end of the first baffle plate, and a second channel is arranged at the lower end of the first baffle plate; wherein, the first channel and the fifth channel form a through channel for absorbing the liquid medicine in the primary reaction chamber 141, so that the absorbed liquid medicine in each sub-reaction chamber in the primary reaction chamber 141 is communicated; the second channel is a gas channel after gas-liquid separation in the first-stage reaction chamber 141, and the gas after the first-stage treatment enters the first-stage third sub-reaction chamber through the second channel and then enters the second-stage cache tank 9 through the first exhaust port.
A first rotating wheel component is arranged in the first-stage first sub-reaction chamber; the first rotating wheel assembly comprises a first support frame 23 fixed in the first-stage first sub-reaction chamber and a plurality of first rotating wheels 24 arranged on the first support frame 23; in this embodiment, the first rotating wheel 24 is provided with four layers on the first support frame 23, each layer is provided with a plurality of rows of rotating wheels, and in the working state, the first rotating wheel assembly is immersed in the absorbed liquid medicine.
The secondary reaction chamber 142 is divided into a secondary first sub-reaction chamber, a secondary second sub-reaction chamber and a secondary third sub-reaction chamber by a third baffle plate and a fourth baffle plate which are vertical to the central axis direction; the third baffle plate divides the second-stage first sub-reaction chamber and the second-stage second sub-reaction chamber, and a third gas channel is arranged at the bottom end of the third baffle plate; the fourth baffle plate divides the second-stage second sub-reaction chamber and the second-stage third sub-reaction chamber, a fourth channel is arranged at the upper end of the fourth baffle plate, and a sixth channel is arranged at the lower end of the fourth baffle plate; the third channel and the sixth channel form a through channel for absorbing the liquid medicine in the secondary reaction chamber 142, so that the absorbed liquid medicine in each sub-reaction chamber in the secondary reaction chamber 142 is communicated; the fourth channel is a gas channel after gas-liquid separation in the secondary reaction chamber 142, and the gas after secondary treatment enters the secondary third sub-reaction chamber through the fourth channel and is discharged through the second exhaust port.
It is understood that a second rotating wheel assembly can be arranged in the second-stage first sub-reaction chamber; the second rotating wheel assembly comprises a second supporting frame fixed in the second-stage first sub-reaction chamber and a plurality of second rotating wheels arranged on the second supporting frame; in this embodiment, the second rotating wheel is also provided with four layers on the second support frame, each layer is provided with a plurality of rows of rotating wheels, and in the working state, the second rotating wheel assembly is immersed in the absorption liquid medicine to fully mix gas and liquid, so as to increase the chemical reaction between pollutants in the waste gas and the absorption liquid medicine.
The first-stage reaction chamber 141 comprises a first medicine feeding port at the top, a first gas-liquid inlet arranged at the top of the first-stage first sub-reaction chamber, a first exhaust port and a first backflow port arranged at the top of the first-stage third sub-reaction chamber, a first liquid outlet and a first exhaust port arranged at the bottom; the first-level cache tank 3 comprises a first air inlet 19 and a first air outlet, and the first air inlet 19 of the first-level cache tank 3 is used for receiving waste gas to be treated; a liquid inlet of the primary injection pump 13 is connected with a first liquid outlet of the primary reaction chamber 141, and a liquid outlet of the primary injection pump 13 is connected with a liquid inlet of the primary injector 4; the air inlet of the first-level ejector 4 is connected with the first air outlet of the first-level cache tank 3, and the gas-liquid outlet of the first-level ejector 4 is connected with the first gas-liquid inlet of the first-level reaction chamber 141.
The first reflux port of the first-stage reaction chamber 141 is connected with the air inlet of the second-stage ejector 8 through a first reflux pipeline, and the first-stage reflux valve 5 is arranged on the first reflux pipeline.
The second-stage reaction chamber 142 comprises a second medicine feeding port at the top, a second gas-liquid inlet arranged at the top of the second-stage first sub-reaction chamber, a second exhaust port 22 and a second return port arranged at the top of the second-stage third sub-reaction chamber, and a second liquid outlet and a second emptying port arranged at the bottom; the second-level cache tank 9 comprises a second air inlet and a second air outlet, and the second air inlet of the second-level cache tank 9 is connected with the first air outlet of the first-level reaction chamber 141; a liquid inlet of the secondary ejector pump 15 is connected with a second liquid outlet of the secondary reaction chamber 142, and a liquid outlet of the secondary ejector pump 15 is connected with a liquid inlet of the secondary ejector 8; the air inlet of the second-level ejector 8 is connected with the second air outlet of the second-level cache tank 9, and the gas-liquid outlet of the second-level ejector 8 is connected with the second gas-liquid inlet of the second-level reaction chamber 142.
The second return port of the second-stage reaction chamber 142 is connected with the air inlet of the second-stage ejector 8 through a second return pipeline, the second-stage return valve 7 is arranged on the second return pipeline, the first return pipeline is communicated with the second return pipeline, and an adjustable communicating valve 6 is arranged between the first-stage return valve 5 and the second-stage return valve 7.
The upper end of the first-stage auxiliary liquid tank 16 is communicated with the upper end of the first-stage reaction chamber 141 through five first pressure-stabilizing pipelines, the bottom end of the first-stage auxiliary liquid tank 16 is communicated with the bottom end of the first-stage reaction chamber 141 through a first auxiliary pipeline, the upper end of the second-stage auxiliary liquid tank 17 is communicated with the upper end of the second-stage reaction chamber 142 through five second pressure-stabilizing pipelines 18, and the bottom end of the second-stage auxiliary liquid tank 17 is communicated with the bottom end of the second-stage reaction chamber 142 through a second auxiliary pipeline.
A primary liquid level meter is arranged at one end of the outer side of the primary reaction chamber 141 and is connected with the primary reaction chamber 141 through a primary liquid level monitoring pipeline; a secondary liquid level meter is arranged at one end of the outer side of the secondary reaction chamber 142 and is connected with the secondary reaction chamber through a secondary liquid level monitoring pipeline; the liquid outlet end of the primary ejector pump 13 is communicated with a primary flow cell, and the other end of the primary flow cell is connected with a primary liquid level monitoring pipeline; the liquid outlet end of the secondary ejector pump 15 is communicated with a secondary flow cell, and the other end of the secondary flow cell is connected with a secondary liquid level monitoring pipeline.
The first-stage pH meter 10 is arranged in the first-stage flow cell, and monitors the pH value of the absorption liquid medicine in the first-stage reaction chamber 141 by monitoring the pH value of the absorption liquid medicine in the first-stage flow cell; the second-level pH meter 11 can be provided with a second-level flow cell, the pH value of the liquid medicine absorbed by the second-level reaction chamber 142 is monitored by monitoring the pH value of the liquid medicine absorbed in the flow cell, and the setting of the pH meter facilitates monitoring the propellant waste gas treatment process and the use efficiency of the absorbed liquid medicine. According to the monitoring results of the first-stage pH meter 10 and the second-stage pH meter 11, when the absorption liquid medicine in the reaction chamber can not be used for reacting with the waste gas continuously, the absorption liquid medicine is discharged through the first emptying port and the second emptying port, and new absorption liquid medicine is added according to the requirement.
Based on above-mentioned propellant exhaust treatment device, its specific work flow includes:
s1, adding an absorption liquid medicine for absorbing the waste gas into the first-stage reaction chamber 141, the second-stage reaction chamber 142, the first-stage auxiliary liquid tank 16 and the second-stage auxiliary liquid tank 17 through the first medicine adding port and the second medicine adding port, respectively;
s2, introducing the waste gas source 1 into the first-level cache tank 3 for caching through the gas inlet control valve 2;
s3, under the action of the primary ejector pump 13, the absorption liquid medicine in the primary reaction chamber 141 enters the primary ejector 4, meanwhile, the ejection waste gas enters the primary ejector 4, and a first gas-liquid mixed flow is formed in the primary ejector 4;
s4, enabling the first gas-liquid mixed flow to enter the first-stage reaction chamber 141 for gas-liquid reaction and gas-liquid separation to form first-stage treated gas, enabling a part of the first-stage treated gas to enter the second-stage buffer tank 9 through the first exhaust port for buffer storage, enabling the other part of the first-stage treated gas to enter the first-stage ejector 4 through the first-stage return valve 5, mixing with the first gas-liquid mixed flow, and repeating the processes of gas-liquid reaction and gas-liquid separation in the first-stage reaction chamber 141;
s5, under the action of the secondary ejector pump 15, the absorption liquid medicine in the secondary reaction chamber 142 enters the secondary ejector 8, meanwhile, the primary treated gas in the secondary cache tank 9 enters the secondary ejector 8, and a second gas-liquid mixed flow is formed in the secondary ejector 8;
and S6, enabling the second gas-liquid mixed flow to enter the secondary reaction chamber 142 for gas-liquid reaction and gas-liquid separation, enabling pollutants in the gas to be absorbed to form secondary treated gas, discharging one part of the secondary treated gas from the second exhaust port 22 of the secondary reaction chamber 142, enabling the other part of the secondary treated gas to enter the secondary ejector 8 through the secondary return valve 7, mixing the other part of the secondary treated gas with the second gas-liquid mixed flow, and repeating the gas-liquid reaction and gas-liquid separation processes in the secondary reaction chamber 142, so that the waste gas treatment is completed.
Claims (10)
1. The utility model provides a propellant exhaust treatment device based on multistage steady voltage vacuum homogeneity technique which characterized in that: the device comprises a reaction chamber (14), a first-level cache tank (3), a first-level ejector pump (13), at least one first-level ejector (4), a second-level cache tank (9), a second-level ejector pump (15) and at least one second-level ejector (8);
the reaction chamber (14) is divided into a first-stage reaction chamber (141) and a second-stage reaction chamber (142) by a partition plate along the direction of a central axis;
the primary reaction chamber (141) comprises a first gas-liquid inlet, a first exhaust port and a first medicine feeding port which are arranged at the top, and a first liquid outlet and a first exhaust port which are arranged at the bottom; the first-level cache tank (3) comprises a first air inlet (19) and a first air outlet, and the first air inlet (19) of the first-level cache tank (3) is used for receiving a waste gas discharge port to be treated; a liquid inlet of the primary ejector pump (13) is connected with a first liquid outlet of the primary reaction chamber (141), and a liquid outlet of the primary ejector pump (13) is connected with a liquid inlet of the primary ejector (4); the gas inlet of the first-level ejector (4) is connected with the first gas outlet of the first-level cache tank (3), and the gas-liquid outlet of the first-level ejector (4) is connected with the first gas-liquid inlet of the first-level reaction chamber (141);
the secondary reaction chamber (142) comprises a second gas-liquid inlet, a second exhaust port (22) and a second medicine adding port which are arranged at the top, and a second liquid outlet and a second emptying port which are arranged at the bottom; the second-level cache tank (9) comprises a second air inlet and a second air outlet, and the second air inlet of the second-level cache tank (9) is connected with the first air outlet of the first-level reaction chamber (141); a liquid inlet of the secondary ejector pump (15) is connected with a second liquid outlet of the secondary reaction chamber (142), and a liquid outlet of the secondary ejector pump (15) is connected with a liquid inlet of the secondary ejector (8); and the gas inlet of the secondary ejector (8) is connected with the second gas outlet of the secondary cache tank (9), and the gas-liquid outlet of the secondary ejector (8) is connected with the second gas-liquid inlet of the secondary reaction chamber (142).
2. The propellant waste gas treatment device based on the multistage pressure-stabilizing vacuum homogenization technology as claimed in claim 1, wherein:
the device also comprises a primary auxiliary liquid tank (16) and a secondary auxiliary liquid tank (17), wherein the primary auxiliary liquid tank (16) and the secondary auxiliary liquid tank (17) are arranged below two sides of the reaction chamber (14);
the upper end of the first-stage auxiliary liquid tank (16) is communicated with the upper end of the first-stage reaction chamber (141) through at least one first pressure stabilizing pipeline, the bottom end of the first-stage auxiliary liquid tank (16) is communicated with the bottom end of the first-stage reaction chamber (141) through a first auxiliary pipeline, the upper end of the second-stage auxiliary liquid tank (17) is communicated with the upper end of the second-stage reaction chamber (142) through at least one second pressure stabilizing pipeline (18), and the bottom end of the second-stage auxiliary liquid tank (17) is communicated with the bottom end of the second-stage reaction chamber (142) through a second auxiliary pipeline.
3. The propellant waste gas treatment device based on the multistage pressure-stabilizing vacuum homogenization technology as claimed in claim 1 or 2, wherein:
the first-stage reaction chamber (141) is divided into a first-stage first sub-reaction chamber, a first-stage second sub-reaction chamber and a first-stage third sub-reaction chamber by a first baffle plate and a second baffle plate which are vertical to the central axis direction;
the first baffle plate divides the first-stage first sub-reaction chamber and the second-stage second sub-reaction chamber, and a first channel is arranged at the bottom end of the first baffle plate; the second baffle plate divides the first-stage second sub-reaction chamber and the first-stage third sub-reaction chamber, a second channel is arranged at the upper end of the second baffle plate, and a fifth channel is arranged at the lower end of the second baffle plate;
the secondary reaction chamber (142) is divided into a secondary first sub-reaction chamber, a secondary second sub-reaction chamber and a secondary third sub-reaction chamber by a third baffle plate and a fourth baffle plate which are vertical to the central axis direction;
the third baffle plate divides the second-stage first sub-reaction chamber and the second-stage second sub-reaction chamber, and a third channel is arranged at the bottom end of the third baffle plate; the fourth baffle plate divides the second-stage second sub-reaction chamber and the second-stage third sub-reaction chamber, a fourth channel is arranged at the upper end of the fourth baffle plate, and a sixth channel is arranged at the lower end of the fourth baffle plate;
the first gas-liquid inlet is arranged in the first sub-reaction chamber of the first stage, and the first exhaust port is arranged in the third sub-reaction chamber of the first stage;
the second gas-liquid inlet is arranged in the second-stage first sub-reaction chamber, and the second exhaust port (22) is arranged in the second-stage third sub-reaction chamber.
4. The propellant waste gas treatment device based on the multistage pressure-stabilizing vacuum homogenization technology as claimed in claim 3, wherein:
a first rotating wheel component is arranged in the first-stage first sub-reaction chamber;
the first rotating wheel assembly comprises a first support frame (23) fixed in the first-stage first sub-reaction chamber and a plurality of first rotating wheels (24) arranged on the first support frame (23);
the first rotating wheels (24) are arranged on the first support frame (23) in multiple layers, multiple rows are arranged on each layer, and the rotating directions of the rotating wheels on two adjacent layers are different;
under the working state, the first rotating wheel component is immersed in the absorption liquid medicine.
5. The propellant waste gas treatment device based on the multistage pressure-stabilizing vacuum homogenization technology as claimed in claim 4, wherein:
the second-stage first sub-reaction chamber is provided with a second rotating wheel component;
the second rotating wheel assembly comprises a second supporting frame fixed in the second-stage first sub-reaction chamber and a plurality of second rotating wheels arranged on the second supporting frame;
the second rotating wheels are arranged on the second supporting frame in multiple layers, multiple rows are arranged on each layer, and the rotating directions of the rotating wheels on two adjacent layers are different;
under the working state, the second rotating wheel assembly is immersed in the absorption liquid medicine.
6. The propellant waste gas treatment device based on the multistage pressure-stabilizing vacuum homogenization technology as claimed in claim 5, wherein: the device also comprises a primary reflux valve (5) and a secondary reflux valve (7);
the primary reaction chamber (141) further comprises a first backflow port arranged at the upper end of the primary third sub-reaction chamber, the first backflow port is connected with the air inlet of the primary ejector (4) through a first backflow pipeline, and the primary backflow valve (5) is arranged on the first backflow pipeline;
the secondary reaction chamber (142) further comprises a second return port arranged at the upper end of the secondary third sub-reaction chamber, the second return port is connected with the air inlet of the secondary ejector (8) through a second return pipeline, and the secondary return valve (7) is arranged on the second return pipeline;
the first return pipeline is communicated with the second return pipeline, and an adjustable communicating valve (6) is arranged between the first return pipeline and the second return pipeline.
7. The propellant waste gas treatment device based on the multistage pressure-stabilizing vacuum homogenization technology as claimed in claim 6, wherein: the device also comprises a primary flow cell and a secondary flow cell;
a primary liquid level meter is arranged at one end of the outer side of the primary reaction chamber (141), and the primary liquid level meter is connected with the primary reaction chamber (141) through a primary liquid level monitoring pipeline; a secondary liquid level meter is arranged at one end of the outer side of the secondary reaction chamber (142), and the secondary liquid level meter is connected with the secondary reaction chamber (142) through a secondary liquid level monitoring pipeline;
the liquid outlet of the primary ejector pump (13) is also connected with one end of a primary flow cell, and the other end of the primary flow cell is connected with a primary liquid level monitoring pipeline; and the liquid outlet of the secondary ejector pump (15) is also connected with one end of a secondary flow cell, and the other end of the secondary flow cell is connected with a secondary liquid level monitoring pipeline.
8. The propellant waste gas treatment device based on the multistage pressure-stabilizing vacuum homogenization technology as claimed in claim 7, wherein: the device also comprises a first-stage pH meter (10) and a second-stage pH meter (11);
the first-stage pH meter (10) is arranged on the first-stage flow cell and used for monitoring the pH value of the absorption liquid medicine in the first-stage reaction chamber (141), and the second-stage pH meter (11) is arranged on the second-stage flow cell and used for monitoring the pH value of the absorption liquid medicine in the second-stage reaction chamber (142).
9. A propellant waste gas treatment method based on a multistage pressure-stabilizing vacuum homogenization technology, which is characterized in that the propellant waste gas treatment device based on the multistage pressure-stabilizing vacuum homogenization technology as claimed in any one of claims 1 to 8 comprises the following steps:
s1, adding an absorption liquid medicine for absorbing the waste gas into the first-stage reaction chamber (141) and the second-stage reaction chamber (142);
s2, introducing the waste gas into the first-level buffer tank (3) for buffering;
s3, under the action of the primary ejector pump (13), absorbing liquid medicine in the primary reaction chamber (141) enters the primary ejector (4), meanwhile, ejecting waste gas enters the primary ejector (4), and a first gas-liquid mixed flow is formed in the primary ejector (4);
s4, enabling the first gas-liquid mixed flow to enter a first-stage reaction chamber (141) for gas-liquid reaction and gas-liquid separation to form first-stage processed gas, and enabling the first-stage processed gas to enter a second-stage buffer tank (9) through a first exhaust port for buffering;
s5, under the action of a secondary ejector pump (15), absorbing liquid medicine in a secondary reaction chamber (142) enters a secondary ejector (8), meanwhile, primary treated gas in a secondary buffer tank (9) enters the secondary ejector (8), and a second gas-liquid mixed flow is formed in the secondary ejector (8);
and S6, enabling the second gas-liquid mixed flow to enter the secondary reaction chamber (142) for gas-liquid reaction and gas-liquid separation, so that pollutants in the gas are absorbed to form secondary treated gas, discharging the secondary treated gas from a second exhaust port (22) of the secondary reaction chamber (142), and finishing waste gas treatment.
10. The propellant waste gas treatment method based on the multistage pressure-stabilizing vacuum homogenization technology as claimed in claim 9, wherein the method comprises the following steps:
in the step S4, a part of the gas after the primary treatment enters a primary ejector (4) through a primary return valve (5), is mixed with the first gas-liquid mixed flow and then is repeatedly subjected to gas-liquid reaction and gas-liquid separation in a primary reaction chamber (141);
in step S6, a part of the gas after the secondary treatment enters the secondary ejector (8) through the secondary reflux valve (7), and is mixed with the second gas-liquid mixed flow to repeatedly perform the gas-liquid reaction and the gas-liquid separation process in the secondary reaction chamber (142).
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