CN113042020A - Desorption device for RDE detection, desorption method and screening method thereof - Google Patents
Desorption device for RDE detection, desorption method and screening method thereof Download PDFInfo
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- CN113042020A CN113042020A CN202110358706.5A CN202110358706A CN113042020A CN 113042020 A CN113042020 A CN 113042020A CN 202110358706 A CN202110358706 A CN 202110358706A CN 113042020 A CN113042020 A CN 113042020A
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
- B01J20/3458—Regenerating or reactivating using a particular desorbing compound or mixture in the gas phase
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention provides a desorption device for RDE detection, and relates to the technical field of motor vehicle pollutant emission detection. The desorption device for RDE detection comprises an air compressor, an air filtering heater and an air storage tank; the outlet of the air compressor is communicated with the inlet of the air filtering heater, the outlet of the air filtering heater is communicated with the inlet of the air storage tank, the air storage tank is provided with a plurality of output pipelines, and the output pipelines are used for being connected with a filtering dryer. According to the desorption device for RDE detection, the gas storage tank and the plurality of filter dryers are added, so that the regeneration parts can be desorbed simultaneously through multiple channels, and the desorption efficiency is improved. On the basis, the invention also provides a desorption method and a screening method.
Description
Technical Field
The invention relates to the technical field of motor vehicle pollutant emission detection, in particular to a desorption device for RDE detection and a desorption method and a screening method thereof.
Background
In 2016, related departments jointly release GB18352.6-2016 (limit for light vehicle pollutant Emission) and measurement method (sixth stage in China), which is newly added with Real Drive Emission (RDE) detection. The testing requirements have led to an important step in the movement of automotive emissions testing from laboratory testing to actual road emissions testing.
Currently, no equipment exists on the market which specially processes the regeneration parts (air filter and air dryer) of the RDE detection equipment, and the desorption of the regeneration parts of the RDE detection equipment is carried out by a self-made simple device. Fig. 1 is a schematic structural diagram of a desorption device of a conventional RDE detection apparatus, and as shown in fig. 1, a detection mechanism is generally connected with a filter dryer 4 to be desorbed by an air compressor 1, an air filter element 15 and a pressure regulating valve 13, and a filter cotton 14 is disposed upstream of the air compressor 1. The interface of the desorption device is only one, and because the desorption needs a long time, the desorption efficiency is low, which directly influences the schedule of the RDE test.
Disclosure of Invention
The invention aims to provide a desorption device, a desorption method and a screening method for RDE detection, which are helpful for solving the technical problems.
The invention is realized by the following steps:
a desorption device for RDE detection comprises an air compressor, an air filtering heater and an air storage tank; the outlet of the air compressor is communicated with the inlet of the air filtering heater, the outlet of the air filtering heater is communicated with the inlet of the air storage tank, the air storage tank is provided with a plurality of output pipelines, and the output pipelines are used for being connected with a filtering dryer.
Above-mentioned RDE detects uses desorption apparatus has not only increased gas holder and a plurality of filter dryer, utilizes leading gas holder to provide sufficient compressed air source and installation space for a plurality of filter dryers, can realize that the multichannel carries out desorption simultaneously to regeneration part (filter dryer promptly), has improved desorption efficiency. In addition, because the air filtering heater is arranged at the upstream of the air storage tank, the compressed air is preheated and filtered, and the desorption efficiency of the filter dryer can be further accelerated.
Further, the system also comprises a control terminal, a first valve and a pressure sensor; the first valve is arranged at the inlet end of the air storage tank, and the pressure sensor is arranged in the air storage tank; the first valve and the pressure sensor are electrically connected with the control terminal. The technical effects are as follows: the pressure sensor is used for measuring air pressure in the air storage tank, and the control terminal is used for acquiring the air pressure data and controlling the opening size of the first valve, so that the air storage tank is inflated at a certain flow rate to ensure that the air storage tank has constant air pressure, such as 50 kilopascals.
Further, the device also comprises a second valve and a differential pressure sensor; the second valve is arranged on the output pipeline, the differential pressure sensor is arranged on the filter dryer and used for measuring the pressure change value of the gas flowing through the filter dryer; the second valve and the differential pressure sensor are electrically connected with the control terminal. The technical effects are as follows: the pressure difference sensor is used for measuring the air pressure of the inlet and the outlet of each filter dryer to obtain the air pressure difference value after the air flows through the filter dryer, and the control terminal obtains the air pressure difference value and closes the second valve at the upstream of the filter dryer when the air pressure difference value reaches a certain amount. At this point, closing the second valve indicates that the filter dryer has completed the desorption process.
Further, the device also comprises an electric heating jacket; the electric heating sleeve is arranged on the filtering dryer; the electric heating jacket is electrically connected with the control terminal. The technical effects are as follows: the electric heating jacket is used for preheating the filter dryer. Before desorption, the proper temperature can enable the water in the filter dryer to form an evaporation state, so that the desorption process can be fast, and the desorption time is shortened.
Further, the temperature measuring device also comprises a first temperature detector; the first temperature detector is arranged on the electric heating sleeve; the first temperature detector is electrically connected with the control terminal. The technical effects are as follows: the first temperature detector is used to monitor the temperature of the electric heating jacket and maintain the electric heating jacket at a proper temperature, such as 50 degrees celsius, through the control terminal.
Further, the temperature-measuring device also comprises a second temperature detector and a pressure regulating valve; the second temperature detector is arranged on the air filter heater, and the pressure regulating valve is arranged at the inlet end of the air filter heater; the second temperature detector and the pressure regulating valve are electrically connected with the control terminal. The technical effects are as follows: the second temperature detector is used for monitoring the temperature of the air filter heater and maintaining the air filter heater at a proper temperature, such as 50 ℃, through the control terminal, wherein the temperature can further accelerate the desorption efficiency of the filter dryer. The pressure regulating valve is used for changing the pressure of the compressed air entering the air filtering heater so as to ensure that the air pressure in the air storage tank is maintained at a required value, for example, the pressure of the pressure regulating valve is set at 100 kilopascals, and then the air pressure of the air storage tank is ensured to be 50 kilopascals by adjusting the first valve.
A desorption method using the desorption device for RDE detection comprises the following steps:
step one, presetting a pressure value P0 of the air storage tank and a numerical value E0 of the differential pressure sensor on the control terminal; step two, starting the air compressor and the air filtering heater, and adjusting the size of the first valve by the control terminal according to the data of the pressure sensor to maintain the air pressure of the air storage tank at P0; and step three, when the data of the differential pressure sensor on any one filter dryer gradually decreases to E0, the control terminal controls to close the second valve at the inlet end of the filter dryer until all the second valves are closed.
Further, before the second step, the control terminal controls the electric heating jacket to preheat the filter dryer, and the control terminal controls the temperature of the electric heating jacket to be at a preset temperature value according to the data of the first temperature detector.
Further, before the second step, the control terminal controls the air filter heater to preheat, and the control terminal controls the temperature of the air filter heater at a preset temperature value according to the data of the second temperature detector.
A screening method using the desorption device for RDE detection comprises the following steps:
firstly, presetting a pressure value P of the gas storage tank on the control terminal0Value E of the differential pressure sensor0Desorption time T0And desorption limit R0(ii) a Secondly, the air compressor and the air filtering heater are started, and the control terminal adjusts the size of the first valve according to the data of the pressure sensor so as to maintain the air pressure of the air storage tank at P0(ii) a Thirdly, the operation exceeds the desorption time T0Then, the control terminal obtains the real pressure difference value E of the filter dryer through the pressure difference sensor1(ii) a If (P)0-E1)/(P0-E0)<R0If so, the control terminal judges that the filter dryer is unqualified; if (P)0-E1)/(P0-E0)≥R0And if so, the control terminal judges that the filter dryer is qualified.
The invention has the beneficial effects that:
the desorption device for RDE detection provided by the invention not only adds the air storage tank and the plurality of filter dryers, but also provides enough compressed air source and installation space for the plurality of filter dryers by utilizing the preposed air storage tank, so that the regeneration parts (namely the filter dryers) can be desorbed simultaneously through multiple channels, and the desorption efficiency is improved. In addition, because the air filtering heater is arranged at the upstream of the air storage tank, the compressed air is preheated and filtered, and the desorption efficiency of the filter dryer can be further accelerated.
According to the desorption method of the desorption device for RDE detection, on the premise of improving the desorption efficiency, a complete automatic detection and control closed loop is formed by the control terminal, the pressure sensor, the first valve, the differential pressure sensor and the second valve, so that the control efficiency of the desorption device is improved.
The screening method of the desorption device for RDE detection can independently perform performance test on any one filter dryer on the premise of improving the desorption efficiency and the device control efficiency, judge the degradation degree of the filter dryer according to the desorption time and the desorption degree of each treatment of the filter dryer, and screen the degraded filter dryer.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a desorption device of a conventional RDE detection apparatus;
fig. 2 is a schematic structural diagram of a desorption device for RDE detection according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a desorption device for RDE detection according to a second embodiment of the present invention;
fig. 4 is a schematic view of a desorption method of a desorption device for RDE detection according to a third embodiment of the present invention;
fig. 5 is a schematic view of a screening method of a desorption apparatus for RDE detection according to a fourth embodiment of the present invention.
Icon: 1-an air compressor; 2-air filtration heater; 3-a gas storage tank; 4-a filter dryer; 5-controlling the terminal; 6-a first valve; 7-a pressure sensor; 8-a second valve; 9-differential pressure sensor; 10-an electric heating jacket; 11-a first temperature detector; 12-a second temperature detector; 13-a pressure regulating valve; 14-filter cotton; 15-an air filter element; 16-signal converter.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention that are generally described and illustrated in the figures can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
The first embodiment:
fig. 2 is a schematic structural diagram of a desorption device for RDE detection according to a first embodiment of the present invention. Referring to fig. 2, the present embodiment provides a desorption apparatus for RDE detection, which includes an air compressor 1, an air filter heater 2, and an air storage tank 3. Wherein, the export of air compressor 1 and the entry intercommunication of air filter heater 2, the export of air filter heater 2 and the entry intercommunication of gas holder 3, gas holder 3 is provided with a plurality of output pipeline, and output pipeline is used for connecting filtering drying ware 4.
As shown in fig. 2, a filter cotton 14 is further disposed at the inlet end of the air compressor 1 to preliminarily filter impurities contained in the air introduced into the air compressor 1. The air filter heater 2 filters and dries the air source delivered by the air compressor 1 for the second time, and heats the compressed air to a set temperature to accelerate the desorption speed of the filter dryer 4.
The operation principle and the operation method of the desorption device for RDE detection in the embodiment are as follows:
the RDE of this embodiment detects uses desorption device, has increased gas holder 3 and a plurality of filter drier 4 in air filtering heater 2's low reaches, utilizes leading gas holder 3 to provide sufficient compressed air source and installation space for a plurality of filter drier 4, can realize that the multichannel carries out desorption simultaneously to regeneration part (filter drier 4 promptly), has improved desorption efficiency. In addition, the air filter heater 2 is provided upstream of the air tank 3, and the compressed air is preheated and filtered, thereby further increasing the desorption efficiency of the filter dryer 4.
Second embodiment:
fig. 3 is a schematic structural diagram of a desorption device for RDE detection according to a second embodiment of the present invention. Referring to fig. 3, the present embodiment provides a desorption device for RDE detection, which is substantially the same as the desorption device for RDE detection of the first embodiment, and the difference between the two is that the desorption device for RDE detection of the present embodiment further includes a control terminal 5, a first valve 6 and a pressure sensor 7; the first valve 6 is arranged at the inlet end of the air storage tank 3, and the pressure sensor 7 is arranged in the air storage tank 3; the first valve 6 and the pressure sensor 7 are both electrically connected with the control terminal 5.
On the basis of the above structure, optionally, as shown in fig. 3, a second valve 8 and a differential pressure sensor 9 are further included; the second valve 8 is arranged on the output pipeline, the differential pressure sensor 9 is arranged on the filter dryer 4, and the differential pressure sensor 9 is used for measuring the pressure change value of the gas flowing through the filter dryer 4; the second valve 8 and the differential pressure sensor 9 are both electrically connected with the control terminal 5.
On the basis of the above structure, optionally, as shown in fig. 3, an electric heating jacket 10 is further included; the electric heating jacket 10 is used for being arranged on the filtering dryer 4; the electric heating jacket 10 is electrically connected with the control terminal 5.
On the basis of the above structure, optionally, as shown in fig. 3, a first temperature detector 11 is further included; the first temperature detector 11 is arranged on the electric heating jacket 10; the first temperature detector 11 is electrically connected with the control terminal 5.
In addition to the above structure, optionally, as shown in fig. 3, a second temperature detector 12 and a pressure regulating valve 13 are further included; the second temperature detector 12 is arranged on the air filter heater 2, and the pressure regulating valve 13 is arranged at the inlet end of the air filter heater 2; the second temperature detector 12 and the pressure regulating valve 13 are both electrically connected with the control terminal 5.
Any one of the above electrically connected devices is connected to the control terminal 5 through a signal converter 16, and the signal converter 16 is used for converting analog signals such as pressure, temperature and the like into digital signals. In addition, the control terminal 5 may further be provided with a display screen for displaying the working conditions of the electric appliances and the desorption performance of the filter dryer 4 in real time.
In addition, the first valve 6 and the second valve 8 are preferably solenoid valves.
The third embodiment:
fig. 4 is a schematic view of a desorption method of a desorption apparatus for RDE detection according to a third embodiment of the present invention. Referring to fig. 4, the present embodiment provides a desorption method of a desorption apparatus for RDE detection, including the following steps:
step one, presetting a pressure value P of the gas storage tank 3 on a control terminal 50And the value E of the differential pressure sensor 90。
Step two, starting the air compressor 1 and the air filter heater 2, and adjusting the size of the first valve 6 by the control terminal 5 according to the data of the pressure sensor 7 to maintain the air pressure of the air storage tank 3 at P0。
Step three, when the data of the differential pressure sensor 9 on any one filter dryer 4 gradually decreases to E0In this case, the control terminal 5 controls the closing of the second valve 8 at the inlet end of the filter-dryer 4 until all the second valves 8 are closed.
On the basis of the method, optionally, before the second step, the control terminal 5 controls the electric heating jacket 10 to preheat the filter dryer 4, and the control terminal 5 controls the temperature of the electric heating jacket 10 to be at a preset temperature value according to the data of the first temperature detector 11. Alternatively, the preset temperature value is assumed to be 50 degrees celsius.
On the basis of the method, optionally, before the second step, the control terminal 5 controls the air filter heater 2 to perform preheating, and the control terminal 5 controls the temperature of the air filter heater 2 to be at a preset temperature value according to the data of the second temperature detector 12. Alternatively, the preset temperature value is assumed to be 50 degrees celsius.
The desorption method is exemplified as follows:
firstly, the pressure value P of the air storage tank 3 is preset on the control terminal 50Is 50kp and the value E of the differential pressure sensor 90Is 8 kp. Then, the air compressor 1 and the air filter heater 2 are started, and the control terminal 5 adjusts the size of the first valve 6 according to the data of the pressure sensor 7 to maintain the air pressure in the air tank 3 at P0I.e. 50kp, and then the actual value of the differential pressure sensor 9 is continuously monitored. Immediately before the filter drier 4 at start-upThe pressure difference value is larger, along with the promotion of desorption treatment, the atmospheric pressure of the outlet end of the filter dryer 4 is gradually increased, the numerical value of the differential pressure sensor 9 is gradually reduced, and when the data of the differential pressure sensor 9 on a certain filter dryer 4 is gradually reduced to E0I.e. 8kp (in this case, the air pressure upstream of the filter-drier 4 is 50kp, and the air pressure downstream of the filter-drier 4 is 42kp), the control terminal 5 controls to close the second valve 8 at the inlet end of the filter-drier 4. Finally, the other filter-dryers 4 continue the same process until all of the second valves 8 are closed.
It should be noted that, in order to ensure that the pressure value of the air reservoir 3 is a constant 50kp, the value of the upstream pressure regulating valve 13 should preferably be preset at 100 kp.
The fourth embodiment:
fig. 5 is a schematic view of a screening method of a desorption apparatus for RDE detection according to a fourth embodiment of the present invention. Referring to fig. 5, the present embodiment provides a method for screening a desorption apparatus for RDE detection, including the following steps:
firstly, presetting a pressure value P of the gas storage tank 3 on a control terminal 50The value E of the differential pressure sensor 90Desorption time T0And desorption limit R0。
Secondly, the air compressor 1 and the air filter heater 2 are started, and the control terminal 5 adjusts the size of the first valve 6 according to the data of the pressure sensor 7, so that the air pressure of the air storage tank 3 is maintained at P0。
Thirdly, the operation exceeds the desorption time T0Then, the control terminal 5 obtains the real pressure difference value E of the filter dryer 4 through the pressure difference sensor 91(ii) a If (P)0-E1)/(P0-E0)<R0If so, the control terminal 5 judges that the filter dryer 4 is unqualified; if (P)0-E1)/(P0-E0)≥R0The control terminal 5 determines that the filter dryer 4 is qualified.
Examples of screening methods are as follows:
firstly, the pressure value P of the air storage tank 3 is preset on the control terminal 5050kp, value E of differential pressure sensor 90At 8kp, desorptionTime T0At 5 hours, desorption limit R0The content was 60%. Then, the air compressor 1 and the air filter heater 2 are started, and the control terminal 5 adjusts the size of the first valve 6 according to the data of the pressure sensor 7 to maintain the air pressure in the air tank 3 at P0I.e. 50kp, and then run for 5 hours. Subsequently, the control terminal 5 obtains the true differential pressure value E of any one of the filter dryers 41If the E is1Is 15kp, then (P)0-E1)/(P0-E0) Equal to (50-15)/(50-8) ≥ 83% ≥ R0When 60%, the filter dryer 4 is qualified. If the E is1Is 28kp, then (P)0-E1)/(P0-E0) Equal to (50-28)/(50-8) 52%<R0If 60%, the filter dryer 4 is not qualified.
Compared with the prior art that the filter dryers 4 are desorbed manually by experience, the invention realizes automation and visualization of the whole desorption process, improves the desorption efficiency, can visually monitor the desorption state of each filter dryer 4, can automatically close the pipeline for completing desorption after the desorption is completed, and can display the desorption state in the control system. The method can also monitor the degradation degree (function degradation degree) of the regeneration component, and can timely screen and reject the degraded regeneration component, so that the regeneration component with a good state is applied to the RDE test, and the accuracy of the RDE test result is ensured.
The invention heats the desorption air in the previous stage and heats the regeneration part by the heating sleeve to enable the regeneration part to form an evaporation state in the regeneration part before desorption, and the two heating modes greatly promote the desorption efficiency of the regeneration part, which is different from other inventions which only adopt one heating mode for desorption. The invention can realize that regeneration parts are desorbed simultaneously in multiple channels (such as 4 channels, 6 channels, 8 channels or even more), but different from other inventions, the invention can independently monitor and control the desorption state, the degradation degree, the temperature of the heating jacket and the like of each regeneration part, when the desorption of a certain regeneration part is finished, the electromagnetic valve of the channel is automatically closed, the desorption state displayed by the system is 100%, and other channels can continue to desorb without being influenced, namely, the invention can realize the automatic control and monitoring of each channel independently. The terminal control system realizes the setting and monitoring of parameters such as temperature, pressure, desorption state and the like, avoids errors caused by manual adjustment of parameters such as pressure, temperature and the like, can be visualized, and has the characteristics of convenience and easiness in use for users.
The invention can be used for desorption of the RDE regeneration component (the filter dryer 4), has the characteristics of settability of desorption pressure, temperature and other parameters, real-time monitoring of desorption state and the like in the control system, can be expanded to other industries similar regeneration components needing desorption, and has wider applicability.
Optionally, the signal transmission line in the technical solution of the present invention may be replaced by a wireless bluetooth mode, so as to implement wireless signal transmission of the device.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A desorption device for RDE detection is characterized by comprising an air compressor (1), an air filtering heater (2) and an air storage tank (3); the air filter is characterized in that an outlet of the air compressor (1) is communicated with an inlet of the air filtering heater (2), an outlet of the air filtering heater (2) is communicated with an inlet of the air storage tank (3), the air storage tank (3) is provided with a plurality of output pipelines, and the output pipelines are used for being connected with the filtering dryer (4).
2. The desorption device for RDE detection as claimed in claim 1, further comprising a control terminal (5), a first valve (6) and a pressure sensor (7); the first valve (6) is arranged at the inlet end of the air storage tank (3), and the pressure sensor (7) is arranged in the air storage tank (3); the first valve (6) and the pressure sensor (7) are electrically connected with the control terminal (5).
3. The desorption device for RDE detection as claimed in claim 2, further comprising a second valve (8) and a differential pressure sensor (9); the second valve (8) is arranged on the output pipeline; the differential pressure sensor (9) is arranged on the filter dryer (4), and the differential pressure sensor (9) is used for measuring the pressure change value of the gas flowing through the filter dryer (4); the second valve (8) and the differential pressure sensor (9) are electrically connected with the control terminal (5).
4. The desorption apparatus for RDE detection as claimed in claim 3, further comprising an electrically heated jacket (10); the electric heating jacket (10) is used for being arranged on the filtering dryer (4); the electric heating jacket (10) is electrically connected with the control terminal (5).
5. The desorption apparatus for RDE detection as claimed in claim 4, further comprising a first temperature detector (11); the first temperature detector (11) is arranged on the electric heating jacket (10); the first temperature detector (11) is electrically connected with the control terminal (5).
6. The desorption apparatus for RDE detection as claimed in claim 5, further comprising a second temperature detector (12) and a pressure regulating valve (13); the second temperature detector (12) is arranged on the air filter heater (2), and the pressure regulating valve (13) is arranged at the inlet end of the air filter heater (2); the second temperature detector (12) and the pressure regulating valve (13) are electrically connected with the control terminal (5).
7. A desorption method using the desorption apparatus for RDE detection according to claim 6, which comprises the steps of:
step one, presetting a pressure value P of the gas storage tank (3) on the control terminal (5)0And the value E of the differential pressure sensor (9)0；
Step two, starting the air compressor (1) and the air filtering heater (2), and adjusting the size of the first valve (6) by the control terminal (5) according to the data of the pressure sensor (7) to maintain the air pressure of the air storage tank (3) at P0；
Step three, when the data of the differential pressure sensor (9) on any one of the filter dryers (4) gradually become smaller to E0And the control terminal (5) controls to close the second valve (8) at the inlet end of the filter dryer (4) until all the second valves (8) are closed.
8. The desorption method of the desorption device for RDE detection as claimed in claim 7, wherein before the step two, the control terminal (5) controls the electric heating jacket (10) to preheat the filter dryer (4), and the control terminal (5) controls the temperature of the electric heating jacket (10) to be at a preset temperature value according to the data of the first temperature detector (11).
9. The desorption method for the desorption device used for the RDE detection as claimed in claim 7, wherein before the step two, the control terminal (5) controls the air filter heater (2) to preheat, and the control terminal (5) controls the temperature of the air filter heater (2) to be at a preset temperature value according to the data of the second temperature detector (12).
10. A screening method using the desorption apparatus for RDE detection according to claim 6, which comprises the following steps:
firstly, presetting a pressure value P of the gas storage tank (3) on the control terminal (5)0The value E of the differential pressure sensor (9)0Desorption time T0And desorption limit R0；
Secondly, starting the air compressor (1) and the air filtering heater (2), and adjusting the size of the first valve (6) by the control terminal (5) according to the data of the pressure sensor (7) to ensure that the storage tank is enabled to storeThe gas pressure of the gas tank (3) is maintained at P0；
Thirdly, the operation exceeds the desorption time T0Then, the control terminal (5) obtains the real pressure difference value E of the filter dryer (4) through the pressure difference sensor (9)1(ii) a If (P)0-E1)/(P0-E0)<R0If so, the control terminal (5) judges that the filter dryer (4) is unqualified; if (P)0-E1)/(P0-E0)≥R0If so, the control terminal (5) judges that the filter dryer (4) is qualified.
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| CN202110358706.5A CN113042020B (en) | 2021-04-01 | 2021-04-01 | Desorption device for RDE detection, desorption method and screening method thereof |
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| CN202110358706.5A CN113042020B (en) | 2021-04-01 | 2021-04-01 | Desorption device for RDE detection, desorption method and screening method thereof |
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| CN113042020A true CN113042020A (en) | 2021-06-29 |
| CN113042020B CN113042020B (en) | 2023-08-15 |
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| CN206867936U (en) * | 2017-03-17 | 2018-01-12 | 北京盛新环保科技有限公司 | Exhaust gas adsorption device and adsorption desorption system |
| US20200009533A1 (en) * | 2018-07-09 | 2020-01-09 | The Boeing Company | Systems, devices and methods for regeneration of a sorbent |
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| JP2001327813A (en) * | 2000-05-22 | 2001-11-27 | Japan Organo Co Ltd | Regeneration equipment of filtering desalting device |
| JP2004036447A (en) * | 2002-07-02 | 2004-02-05 | Mitsubishi Heavy Ind Ltd | Device and method for regeneration of filter |
| CN204973599U (en) * | 2015-09-09 | 2016-01-20 | 北京方信立华科技有限公司 | Online recycle and regeneration device of SCR reactor |
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| CN113042020B (en) | 2023-08-15 |
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