Tail gas treatment system, method and device, electronic equipment and storage medium

Abstract

The invention discloses a tail gas treatment method and device, electronic equipment and a storage medium, and relates to the technical field of vehicles. The system comprises a turbocharger, an ammonia gas ejector, an air cylinder and a controller. The controller is used for controlling the ammonia gas injector to inject ammonia gas into a pipeline corresponding to the air input end, so that the ammonia gas enters the turbocharger after being mixed with air in the pipeline; and the turbocharger is used for pressurizing the mixed gas of the ammonia gas and the air and then inputting the pressurized mixed gas into the air cylinder for combustion. As the ammonia gas is an effective reducing agent and can react with the nitrogen oxide to convert the nitrogen oxide into harmless nitrogen and water, before the combustion process of the diesel engine, the ammonia gas is doped into the air according to a certain proportion, the emission of the nitrogen oxide can be effectively reduced, and the content of the nitrogen oxide in tail gas emission is reduced.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to exhaust gas treatment systems, methods, devices, electronic devices and storage media. Background Art

[0003] When diesel burns in the cylinders of a vehicle, it produces a large amount of NOx (nitrogen oxides). If it is not restricted, it will not meet the vehicle's exhaust emission requirements.

[0004] In the related technologies, there are two ways to reduce the nitrogen oxide content in exhaust gas, one is post-treatment selective catalytic reduction (SCR), and the other is exhaust gas recirculation (EGR). Among them, the first way requires the post-treatment SCR to reach a certain temperature so that the nitrogen oxides in the exhaust gas can react with urea at a high efficiency, and the treatment efficiency of nitrogen oxides is limited; the second way is that the exhaust gas re-enters the cylinder for combustion, which will affect another diesel emission - particulate matter (PM).

[0005] Therefore, there is an urgent need for an exhaust gas treatment method that does not require post-processing SCR and can reduce the nitrogen oxide content in the exhaust gas while preventing the increase of PM in the exhaust gas. Summary of the invention

[0007] In view of this, the present application provides an exhaust gas treatment system, method, device, electronic device and storage medium, which can reduce the nitrogen oxide content in the exhaust gas and prevent the increase of PM in the exhaust gas without the need for post-processing SCR.

[0008] On the one hand, an embodiment of the present application provides an exhaust gas treatment system, including a turbocharger, an ammonia injector, a cylinder, and a controller; wherein the controller is connected to the ammonia injector, the ammonia injector is installed at the air input end of the turbocharger, and the cylinder is connected to the air output end of the turbocharger; the controller is used to control the ammonia injector to spray ammonia into a pipe corresponding to the air input end, so that the ammonia is mixed with the air in the pipe and then enters the turbocharger; the turbocharger is used to pressurize the mixed gas of ammonia and air and input it into the cylinder; the cylinder is used to discharge the mixed gas after combustion, wherein the ammonia in the mixed gas can oxidize and reduce the nitrogen oxides generated during the combustion process into nitrogen and water.

[0009] In a possible embodiment, the exhaust gas treatment system further includes an air filter; the air filter is connected to the air input end of the turbocharger to purify the air and then input it into the turbocharger.

[0010] In a possible embodiment, the exhaust gas treatment system further includes an intercooler; the intercooler is installed in the communication pipeline between the turbocharger and the cylinder, and is used to cool the mixed gas output by the turbocharger before inputting it into the cylinder.

[0011] In a possible embodiment, the ammonia injector includes an ammonia nozzle and an ammonia flow control module; wherein the ammonia nozzle is installed at the air input end of the turbocharger, and is used to inject ammonia into a pipeline corresponding to the air input end; the ammonia flow control module is connected to the ammonia nozzle and a controller; the controller adjusts the ammonia injection amount of the ammonia nozzle by controlling the ammonia flow control module.

[0012] In a possible embodiment, the exhaust gas treatment system also includes a nitrogen oxide sensor; the nitrogen oxide sensor is connected to the controller and installed at the exhaust gas output end of the cylinder, and is used to monitor the content of nitrogen oxides in the exhaust gas and feed the content back to the controller so that the controller controls the ammonia injection amount of the ammonia injector according to the content.

[0013] On the one hand, an embodiment of the present application provides an exhaust gas treatment method based on any of the above-mentioned exhaust gas treatment systems, the method comprising: determining the proportion of ammonia doped in the air input end of the turbocharger based on theoretical and experimental results; calculating the ammonia injection amount of the ammonia injector based on the proportion and the amount of air in the air input end; controlling the ammonia injector to spray ammonia into the air input end according to the ammonia injection amount, so that the air input to the turbocharger has a mixed proportion of ammonia, and thereby the nitrogen oxides generated during combustion in the cylinder are oxidized and reduced by ammonia to nitrogen and water.

[0014] In a possible embodiment, the exhaust gas treatment method further includes: obtaining the nitrogen oxide content in the exhaust gas output end of the cylinder based on the nitrogen oxide sensor; and adjusting the ammonia injection amount based on the nitrogen oxide content.

[0015] On the one hand, an embodiment of the present application also provides an exhaust gas treatment device, based on any of the above-mentioned exhaust gas treatment systems, including: a determination module, used to determine the proportion of ammonia doped in the air input end of the turbocharger based on theoretical and experimental results; a calculation module, used to calculate the ammonia injection amount of the ammonia injector based on the proportion and the amount of air in the air input end; a control module, used to control the ammonia injector to spray ammonia into the air input end according to the ammonia injection amount, so that the air input to the turbocharger has a mixed proportion of ammonia, and then the nitrogen oxides generated during combustion in the cylinder are oxidized and reduced by ammonia to nitrogen and water.

[0016] In a possible embodiment, the exhaust gas treatment device further includes: an adjustment module, which is used to obtain the nitrogen oxide content in the exhaust gas output end of the cylinder based on the nitrogen oxide sensor; and adjust the ammonia injection amount based on the nitrogen oxide content.

[0017] On the one hand, an embodiment of the present application provides an electronic device, which includes a processor and a memory, wherein the memory stores program code, and when the program code is executed by the processor, the processor executes any one of the above-mentioned exhaust gas treatment methods.

[0018] On the one hand, the present application provides a computer-readable storage medium, which includes a program code. When the storage medium is run on an electronic device, the program code is used to enable the electronic device to execute any of the above-mentioned exhaust gas treatment methods.

[0019] The beneficial effects of this application are as follows: The embodiment of the present application provides an exhaust gas treatment system, method, device, electronic device and storage medium, wherein the system includes a turbocharger, an ammonia injector, a cylinder, and a controller; the controller is used to control the ammonia injector to spray ammonia into the pipeline corresponding to the air input end, so that the ammonia is mixed with the air in the pipeline and enters the turbocharger; the turbocharger is used to pressurize the mixed gas of ammonia and air and input it into the cylinder for combustion. Since ammonia is an effective reducing agent, it can react with nitrogen oxides and convert them into harmless nitrogen and water. Therefore, before the combustion process of the diesel engine, adding ammonia to the air in a certain proportion can effectively reduce nitrogen oxide emissions, thereby reducing the nitrogen oxide content in the exhaust gas emissions.

[0020] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 This is one of the structural schematic diagrams of an exhaust gas treatment system in an embodiment of the present application; Figure 2 This is a second structural schematic diagram of an exhaust gas treatment system in an embodiment of the present application; Figure 3 This is a third structural diagram of an exhaust gas treatment system in an embodiment of the present application; Figure 4 This is a fourth structural schematic diagram of an exhaust gas treatment system in an embodiment of the present application; Figure 5 This is a fifth structural diagram of an exhaust gas treatment system in an embodiment of the present application; Figure 6 This is an example diagram of an exhaust gas treatment system in an embodiment of the present application; Figure 7 This is a flow chart of an implementation method of an exhaust gas treatment method in an embodiment of the present application; Figure 8 This is a schematic diagram of the structure of an exhaust gas treatment device in an embodiment of the present application; Fig. 9 A schematic diagram of the hardware structure of an electronic device in an embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the drawings in the embodiment of the present application. Obviously, the described embodiment is only a part of the embodiment of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily. In addition, although the logical order is shown in the flow chart, in some cases, the steps shown or described can be performed in an order different from that here.

[0025] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0026] The following is a brief introduction to the design concept of the embodiment of the present application: At present, there are two ways to reduce the nitrogen oxide content in exhaust gas. One is post-treatment selective catalytic reduction (SCR), and the other is exhaust gas recirculation (EGR). Among them, the first way requires the post-treatment SCR to reach a certain temperature so that the nitrogen oxides in the exhaust gas can react with urea at a high efficiency, and the treatment efficiency of nitrogen oxides is limited; the second way is that the exhaust gas re-enters the cylinder for combustion, which will affect the increase of another diesel emission - particulate matter (PM). Therefore, a new exhaust treatment method is urgently needed.

[0027] In view of this, the embodiments of the present application provide an exhaust gas treatment system, method, device, electronic device and storage medium, wherein the system includes a turbocharger, an ammonia injector, a cylinder, and a controller; the controller is used to control the ammonia injector to spray ammonia into the pipeline corresponding to the air input end, so that the ammonia is mixed with the air in the pipeline and enters the turbocharger; the turbocharger is used to pressurize the mixed gas of ammonia and air and input it into the cylinder for combustion. Since ammonia is an effective reducing agent, it can react with nitrogen oxides and convert them into harmless nitrogen and water. Therefore, before the combustion process of the diesel engine, adding ammonia to the air in a certain proportion can effectively reduce nitrogen oxide emissions, thereby reducing the nitrogen oxide content in the exhaust gas emissions.

[0028] The preferred embodiments of the present application are described below in conjunction with the drawings in the specification. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In addition, the embodiments and features in the embodiments of the present application may be combined with each other if there is no conflict.

[0029] like Figure 1 As shown, an exhaust gas treatment system provided by an embodiment of the present application is Figure 1 In the embodiment, the exhaust gas treatment system includes a turbocharger 101 , an ammonia injector 102 , a cylinder 103 , and a controller 104 .

[0030] The controller 104 may be an electronic control unit (ECU) of the vehicle, or may be another control module provided separately, which is not specifically limited here. The controller 104 is connected to the ammonia injector 102, which is installed on the pipeline corresponding to the air input end of the turbocharger 101, and the cylinder 103 is connected to the air output end of the turbocharger 101; the controller 104 is used to control the ammonia injector 102 to spray ammonia into the pipeline corresponding to the air input end of the turbocharger 101, so that the ammonia is mixed with the air in the pipeline and enters the turbocharger 101; the turbocharger 101 is used to pressurize the mixed gas of ammonia and air and input it into the cylinder 103; the cylinder 103 is used to discharge the mixed gas after combustion, wherein the ammonia in the mixed gas can oxidize and reduce the nitrogen oxides generated during the combustion process into nitrogen and water.

[0031] Based on the exhaust gas treatment system, the controller 104 controls the ammonia injector 102 to inject ammonia into the pipe at the air input end of the turbocharger 101, so that the ammonia is mixed with the air, and then pressurized by the turbocharger 101, and then the pressurized mixed gas is transmitted to the cylinder 103. Since ammonia is an effective reducing agent, it can react with nitrogen oxides and convert them into harmless nitrogen and water. Therefore, when the mixed gas is burned in the cylinder 103, the generated nitrogen oxides are oxidized and reduced into ammonia and water by the ammonia in the mixed gas, so that the nitrogen oxide content in the exhaust gas discharged from the cylinder 103 is reduced to meet the relevant standard requirements.

[0032] In a possible embodiment, Figure 2 As shown, the exhaust gas treatment system further includes an air filter 201; the air filter 201 is connected to the air input end of the turbocharger 101, and is used to purify the air and then input it into the turbocharger 101. Based on the exhaust gas treatment system, the air input into the turbocharger 101 can be filtered to prevent particulate matter in the air from entering the exhaust gas treatment system.

[0033] In a possible embodiment, Figure 3 As shown, the exhaust gas treatment system further includes an intercooler 301 ; the intercooler 301 is installed in the communication pipeline between the turbocharger 101 and the cylinder 103 , and is used to cool the mixed gas output by the turbocharger 101 and then input it into the cylinder 103 .

[0034] In a possible embodiment, Figure 4As shown, the ammonia injector 102 includes an ammonia nozzle 401 and an ammonia flow control module 402; wherein the ammonia nozzle 401 is installed at the air input end of the turbocharger 101, and is used to inject ammonia into the pipeline corresponding to the air input end; the ammonia flow control module 402 is connected to the ammonia nozzle 401 and the controller 104; the controller 104 adjusts the ammonia injection amount of the ammonia nozzle 401 by controlling the ammonia flow control module 402.

[0035] In a possible embodiment, Figure 5 As shown, the exhaust gas treatment system also includes a nitrogen oxide sensor 501; the nitrogen oxide sensor 501 is connected to the controller 104 and installed at the exhaust gas output end of the cylinder 103, and is used to monitor the content of nitrogen oxides in the exhaust gas and feed the content back to the controller 103, so that the controller 103 controls the ammonia injection amount of the ammonia injector 102 according to the content of nitrogen oxides in the exhaust gas.

[0036] In order to further explain the exhaust gas treatment system provided by the present application, a specific example is given below to explain it in detail. Figure 6 The figure shows an example diagram of an exhaust gas treatment system provided in an embodiment of the present application.

[0037] exist Figure 6 The exhaust gas treatment system includes air filter, ammonia nozzle, ammonia injection flow control device, ECU, turbocharger, nitrogen oxide sensor, intercooler, cylinder, etc.

[0038] Working principle: After fresh air is filtered by the air filter, it is transmitted to the turbocharger through pipe A. An ammonia nozzle is added at position D in the pipe to mix with the fresh air. The position before the turbocharger intake is in a negative pressure state, and the mixed gas is sucked into the turbocharger. After being pressurized by the turbocharger, the mixed gas with ammonia enters the intercooler through pipe B, and then enters the cylinder to participate in combustion. When ammonia is added in a certain proportion during combustion, it can effectively reduce nitrogen oxide emissions. The exhaust gas after combustion is discharged from pipe C.

[0039] Among them, the ammonia injection control method includes: after certain experiments, find out the best ratio of ammonia mixed in the air, which is most conducive to reducing the emission of nitrogen oxides; then, through the air volume detected inside the ECU, based on the best ratio of ammonia mixed obtained in the experiment, the required ammonia demand is calculated by the ECU; then, the ECU sends a signal to the ammonia flow injection device to control the ammonia injection amount, and injects it through the ammonia nozzle. In this process, the nitrogen oxide sensor added to the C pipeline detects the content of nitrogen oxides in the exhaust gas in real time, so that the ECU can perform real-time feedback calibration.

[0040] Based on the above exhaust gas treatment system, since ammonia is an effective reducing agent, it can react with nitrogen oxides and convert them into harmless nitrogen and water. Therefore, adding ammonia to the air in a certain proportion before the combustion process of the diesel engine can effectively reduce nitrogen oxide emissions, thereby reducing the nitrogen oxide content in the exhaust emissions.

[0041] Based on any of the above exhaust gas treatment systems, the present application embodiment provides an exhaust gas treatment method, such as Figure 7 FIG. 1 is a flow chart of a tail gas treatment method provided in an embodiment of the present application, and the flow chart includes the following steps: S701, based on theoretical and experimental results, determining the proportion of ammonia doped in the air input end of the turbocharger; S702, calculating an ammonia injection amount of the ammonia injector based on the ratio and the amount of air in the air input end; S703, controlling the ammonia injector to inject ammonia into the air input end according to the ammonia injection amount, so that the air input to the turbocharger is mixed with ammonia in the proportion, so that the nitrogen oxides generated during combustion in the cylinder are oxidized and reduced into nitrogen and water by the ammonia; S704, obtaining the nitrogen oxide content at the exhaust gas output end of the cylinder based on the nitrogen oxide sensor; S705, adjusting the ammonia injection amount based on the nitrogen oxide content.

[0042] Based on the above exhaust gas treatment method, since ammonia is an effective reducing agent, it can react with nitrogen oxides and convert them into harmless nitrogen and water. Therefore, a certain proportion of nitrogen is injected into the air input to the turbocharger so that the nitrogen content can correspond to the nitrogen oxides generated during combustion in the cylinder, which can ensure that the ammonia content can meet the oxidation-reduction requirements of nitrogen oxides and avoid excessive injection of ammonia, which may cause new pollution. At the same time, this method does not need to increase the temperature for catalytic reduction, nor does it need to recycle the exhaust gas, which avoids new technical problems.

[0043] Based on the same inventive concept, the embodiment of the present application also provides a tail gas treatment device based on the above tail gas treatment method. Figure 8 As shown, it is a schematic diagram of the structure of the tail gas treatment device 800, which may include: A determination module 801 is used to determine the proportion of ammonia doped in the air input end of the turbocharger based on theoretical and experimental results; A calculation module 802, for calculating an injection amount of ammonia of the ammonia injector based on the ratio and the amount of air in the air input end; The control module 803 is used to control the ammonia injector to inject ammonia into the air input end according to the ammonia injection amount, so that the air input to the turbocharger is mixed with ammonia in a certain proportion, thereby causing the nitrogen oxides generated during combustion in the cylinder to be oxidized and reduced into nitrogen and water by ammonia.

[0044] In a possible embodiment, the exhaust gas treatment device further includes: an adjustment module, which is used to obtain the nitrogen oxide content in the exhaust gas output end of the cylinder based on the nitrogen oxide sensor; and adjust the ammonia injection amount based on the nitrogen oxide content.

[0045] Based on the above exhaust gas treatment device, since ammonia is an effective reducing agent, it can react with nitrogen oxides and convert them into harmless nitrogen and water. Therefore, a certain proportion of nitrogen is injected into the air input to the turbocharger, so that the nitrogen content can correspond to the nitrogen oxides generated during combustion in the cylinder, which can ensure that the ammonia content can meet the oxidation-reduction requirements of nitrogen oxides and avoid excessive injection of ammonia, which will cause new pollution. At the same time, this method does not need to increase the temperature for catalytic reduction, nor does it need to recycle the exhaust gas, avoiding new technical problems.

[0046] In some possible implementations, the exhaust gas treatment device according to the present application may include at least a processor and a memory. The memory stores program code, and when the program code is executed by the processor, the processor executes the steps of the exhaust gas treatment method according to various exemplary embodiments of the present application described in this specification. For example, the processor may execute the following steps: Figure 7 Follow the steps shown in .

[0047] Based on the same inventive concept, an electronic device is also provided in the embodiment of the present application, and the electronic device can realize the function of the exhaust gas treatment device mentioned above, referring to Fig. 9 , the electronic device comprises: At least one processor 901, and a memory 902 connected to the at least one processor 901. The specific connection medium between the processor 901 and the memory 902 is not limited in the embodiment of the present application. Fig. 9 In the example, the processor 901 and the memory 902 are connected via a bus 900. Fig. 9 The bus 900 is represented by a bold line, and the connection between other components is only for schematic illustration and is not intended to be limiting. The bus 900 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig. 9 Only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus. Alternatively, the processor 901 can also be called a controller, and there is no limitation on the name.

[0048] In the embodiment of the present application, the memory 902 stores instructions that can be executed by at least one processor 901. The at least one processor 901 can execute the exhaust gas treatment method discussed above by executing the instructions stored in the memory 902. The processor 901 can implement Figure 8 The functions of each module in the device shown.

[0049] Among them, processor 901 is the control center of the device, and can use various interfaces and lines to connect various parts of the entire control device. By running or executing instructions stored in memory 902 and calling data stored in memory 902, various functions of the device and processing data, the device can be monitored as a whole.

[0050] In one possible design, the processor 901 may include one or more processing units, and the processor 901 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the modem processor may not be integrated into the processor 901. In some embodiments, the processor 901 and the memory 902 may be implemented on the same chip, and in some embodiments, they may also be implemented separately on separate chips.

[0051] Processor 901 can be a general-purpose processor, such as a central processing unit (CPU), a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor can be a microprocessor or any conventional processor, etc. The steps of the exhaust gas treatment method disclosed in the embodiments of the present application can be directly embodied as a hardware processor to be executed, or a combination of hardware and software modules in the processor can be executed.

[0052] The memory 902 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer executable programs and modules. The memory 902 may include at least one type of storage medium, such as a flash memory, a hard disk, a multimedia card, a card-type memory, a random access memory (Random Access Memory, RAM), a static random access memory (Static Random Access Memory, SRAM), a programmable read-only memory (Programmable Read Only Memory, PROM), a read-only memory (Read Only Memory, ROM), an electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), a magnetic memory, a disk, an optical disk, etc. The memory 902 is any other medium that can be used to carry or store a desired program code in the form of an instruction or data structure and can be accessed by a computer, but is not limited thereto. The memory 902 in the embodiment of the present application can also be a circuit or any other device that can realize a storage function, for storing program instructions and / or data.

[0053] By designing and programming the processor 901, the code corresponding to the exhaust gas treatment method described in the above embodiment can be fixed into the chip, so that the chip can execute the code when it is running. Figure 7 The steps of the tail gas treatment method of the embodiment shown are as follows: How to design and program the processor 901 is a technology well known to those skilled in the art and will not be described in detail here.

[0054] Based on the same inventive concept, an embodiment of the present application further provides a storage medium, which stores computer instructions. When the computer instructions are executed on a computer, the computer executes the exhaust gas treatment method discussed above.

[0055] In some possible embodiments, various aspects of the exhaust gas treatment method provided in the present application can also be implemented in the form of a program product, which includes a program code. When the program product is run on the device, the program code is used to enable the control device to execute the steps of the exhaust gas treatment method according to various exemplary embodiments of the present application described above in this specification.

[0056] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0057] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0058] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0059] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0060] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A tail gas treatment system, characterized in that: It includes a turbocharger, an ammonia injector, a cylinder, and a controller; wherein, The controller is connected to the ammonia injector, the ammonia injector is installed at the air input end of the turbocharger, and the cylinder is connected to the air output end of the turbocharger; The controller is used to control the ammonia injector to spray ammonia into the pipeline corresponding to the air input end, so that the ammonia is mixed with the air in the pipeline and then enters the turbocharger; The turbocharger is used to pressurize the mixed gas of the ammonia and the air and then input it into the cylinder; The cylinder is used to discharge the mixed gas after combustion, wherein the ammonia in the mixed gas can oxidize and reduce nitrogen oxides generated during the combustion process into nitrogen and water.

2. The system according to claim 1, characterized in that: Also includes air filter; The air filter is connected to the air input end of the turbocharger and is used to purify the air and then input it into the turbocharger.

3. The system according to claim 1, characterized in that: Also includes intercooler; The intercooler is installed in the communication pipeline between the turbocharger and the cylinder, and is used for cooling the mixed gas output by the turbocharger and then inputting it into the cylinder.

4. The system according to claim 1, characterized in that: The ammonia injector comprises an ammonia nozzle and an ammonia flow control module; wherein, The ammonia nozzle is installed at the air input end of the turbocharger, and is used to inject the ammonia into the pipeline corresponding to the air input end; The ammonia flow control module is connected to the ammonia nozzle and the controller; The controller adjusts the ammonia injection amount of the ammonia nozzle by controlling the ammonia flow control module.

5. The system according to claim 1, characterized in that: Also included is a NOx sensor; The nitrogen oxide sensor is connected to the controller and installed at the exhaust gas output end of the cylinder to monitor the content of nitrogen oxides in the exhaust gas and feed the content back to the controller so that the controller controls the ammonia injection amount of the ammonia injector according to the content.

6. A tail gas treatment method, based on the system according to any one of claims 1 to 5, characterized in that: The method comprises: Based on theoretical and experimental results, determine the proportion of ammonia doped in the air input of the turbocharger; calculating an ammonia injection amount of the ammonia injector based on the ratio and the amount of air in the air input end; The ammonia injector is controlled to inject ammonia into the air input end according to the ammonia injection amount, so that the air input to the turbocharger is mixed with ammonia in the proportion, and the nitrogen oxides generated during combustion in the cylinder are oxidized and reduced into nitrogen and water by the ammonia.

7. The method according to claim 6, characterized in that: Also includes: Based on the nitrogen oxide sensor, the nitrogen oxide content in the exhaust gas output end of the cylinder is obtained; The ammonia injection amount is adjusted based on the nitrogen oxide content.

8. An exhaust gas treatment device, based on the system according to any one of claims 1 to 5, characterized in that: include: A determination module, for determining the proportion of ammonia doped in the air input end of the turbocharger based on theoretical and experimental results; a calculation module, configured to calculate an injection amount of ammonia of the ammonia injector based on the ratio and an amount of air in the air input end; The control module is used to control the ammonia injector to inject ammonia into the air input end according to the ammonia injection amount, so that the air input to the turbocharger is mixed with ammonia in the proportion, and then the nitrogen oxides generated during combustion in the cylinder are oxidized and reduced into nitrogen and water by the ammonia.

9. An electronic device, characterized in that: It includes a processor and a memory, wherein the memory stores program code, and when the program code is executed by the processor, the processor executes any one of the methods in claims 6 to 7.

10. A computer-readable storage medium, characterized in that: The storage medium comprises a program code, and when the storage medium is run on an electronic device, the program code is used to enable the electronic device to execute any one of the methods described in claims 6 to 7.

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