WO2017193682A1 - 汽车尾气处理方法 - Google Patents

汽车尾气处理方法 Download PDF

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WO2017193682A1
WO2017193682A1 PCT/CN2017/075882 CN2017075882W WO2017193682A1 WO 2017193682 A1 WO2017193682 A1 WO 2017193682A1 CN 2017075882 W CN2017075882 W CN 2017075882W WO 2017193682 A1 WO2017193682 A1 WO 2017193682A1
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exhaust gas
automobile
gas
harmful gases
nitric oxide
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PCT/CN2017/075882
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English (en)
French (fr)
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黄方元
黄安武
黄海艳
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黄方元
黄安武
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Publication of WO2017193682A1 publication Critical patent/WO2017193682A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2086—Activating the catalyst by light, photo-catalysts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
    • F01N2900/1402—Exhaust gas composition
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • 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
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • the invention relates to the technical field of automobiles, and in particular to a method for treating automobile exhaust gas.
  • the emission of automobile exhaust is a matter of great concern to the society.
  • the exhaust gas emitted by automobiles contains various harmful gases including carbon monoxide (CO) and nitrogen monoxide (NO). These gases cause environmental pollution on the one hand, and on the other hand It can cause personal injury.
  • CO carbon monoxide
  • NO nitrogen monoxide
  • nitric oxide in automobile exhaust is a colorless, odorless, water-soluble toxic gas. Because nitric oxide carries free radicals, it makes its chemical properties very active, once it is discharged into the air as automobile exhaust. After reacting with oxygen, a corrosive gas, nitrogen dioxide, is formed. Inhalation of nitrogen dioxide in the early stage will have mild eye and upper respiratory tract irritation, such as pharyngeal discomfort, dry cough, etc., and after a few hours of incubation, chest tightness, respiratory distress, cough, sputum, cyanosis, etc. It may even make people faint.
  • the object of the present invention is to provide a method for treating automobile exhaust gas, which can effectively treat the nitrogen monoxide in the exhaust gas that exceeds the limit discharge in time, and reduce the environmental pollution and personal injury of the exhaust gas.
  • the present invention adopts the following technical solutions:
  • a method for treating automobile exhaust gas includes the following steps:
  • a catalytic reaction command is generated, and the exhaust gas is discharged to the photocatalytic reactor for treatment by the catalytic reaction command.
  • an automobile exhaust gas treating method of the present invention detects the types and contents of harmful gases contained in automobile exhaust gas, and identifies various harmful gases, and discharges according to the label and content.
  • the harmful gases are treated separately, and the treatment of nitric oxide is focused on to achieve targeted treatment of harmful gases, which can effectively improve the efficiency of tail gas treatment, avoid pollution of the automobile exhaust and cause harm to the human body.
  • FIG. 1 is a schematic flow chart of a method for processing an automobile exhaust gas according to an embodiment of the present invention.
  • an automobile exhaust gas processing method includes the following steps:
  • step S101 the exhaust gas at the outlet of the automobile exhaust gas purifier is monitored in real time, and the exhaust gas is analyzed to obtain the type and content of various harmful gases in the exhaust gas.
  • the detection of off-gas in this step can utilize multiple gas detectors. Each gas detector can detect the type and content of harmful gases contained in the exhaust gas.
  • the gas detector includes at least one detector for detecting the content of nitric oxide in the exhaust gas.
  • each harmful gas is identified according to the type of the harmful gas. Harmful gases can be identified based on the results detected by different gas detectors.
  • step S103 it is determined whether the exhaust gas is an exhaust gas that exceeds the limit according to the content of various harmful gases. If yes, it indicates that at least one harmful gas exists in the exhaust gas exceeds the national standard. At this time, step S104 is performed to realize the treatment of the exhaust gas discharged according to the mark. Otherwise, it means that the vehicle exhaust has no harmful gas or even rarely to be negligible. At this time, it returns to step S101 to continue monitoring.
  • step S104 if yes, it is determined according to the identifier whether the harmful gas discharged from the exhaust gas contains only nitric oxide. If yes, it means that in addition to the high content of nitrogen monoxide in the exhaust gas, other harmful gases are within the standard range, and step S105 can be performed at this time.
  • Step S105 if the result of the determination in step S104 is YES, that is, according to the identifier, it is determined that the harmful gas discharged from the exhaust gas contains only nitric oxide, and a catalytic reaction command is generated, and the exhaust gas is discharged to the photocatalytic reaction through the catalytic reaction instruction. Processing in the device.
  • the exhaust gas can be absorbed by the exhaust gas having a photocatalytic reaction layer of titanium dioxide and ultraviolet rays by ultraviolet light. Since this embodiment is for secondary treatment of automobile exhaust gas, usually in automobile exhaust gas. The content of harmful substances is usually low, so that nitrogen monoxide can be completely absorbed by the photocatalytic reaction.
  • the process of real-time monitoring of the exhaust gas at the outlet of the automobile exhaust gas purifier and analyzing the exhaust gas to obtain the kinds and contents of various harmful gases in the exhaust gas may include the following steps:
  • automobile exhaust gas usually contains various harmful gases such as nitrogen oxides, hydrocarbons, sulfur oxides, and nitrogen oxides.
  • Each of these gases has a specific characteristic absorption band and characteristic frequency that is strongly absorbed when the infrared spectrum falls near the characteristic frequency band. Therefore, the infrared spectrum of the corresponding characteristic frequency can be used to detect the components of the harmful gas in the exhaust gas, and the amount of the absorbed external spectrum can detect the content of the corresponding gas.
  • the method may further include the step of sequentially filtering and amplifying the electrical signal.
  • the electrical signal can be filtered and amplified by the filtering circuit and the amplifying circuit respectively. After filtering and amplifying the electrical signal, the accuracy of the electrical signal detection can be effectively improved.
  • the exhaust gas is determined according to the identifier.
  • the harmful gas discharged from the exhaust gas also contains carbon monoxide, and an absorption command can be generated, and after the nitric oxide is processed, the exhaust gas is discharged into a vessel having a carbon monoxide absorbent through the absorption command for carbon monoxide treatment.
  • the carbon monoxide absorbent may be a composition composed of a porous inorganic carrier and a binary complex of a nitride and copper chloride carried thereon, and nitrogen in the composition
  • the compound may comprise from 0.4 to 0.8 molar ratio.
  • the inorganic carrier may be: porous ceramic, activated carbon or titanium oxide.
  • the nitride can be: pyridine and Composition and the like. The carbon monoxide absorbent can effectively absorb carbon monoxide in the exhaust gas.
  • the process of discharging the exhaust gas into the photocatalytic reactor for performing the nitric oxide treatment may specifically include:
  • the infrared detecting method is used to calculate the concentration of the nitric oxide
  • the current temperature can be obtained by placing a temperature sensor in the photocatalytic reactor;
  • a reference speed is calculated based on the rotational speed, the current temperature, and the concentration, and the speed at which the exhaust gas is discharged into the photocatalytic reactor is adjusted according to the reference speed.
  • V NO is the reference speed
  • r is the rotational speed of the automobile engine
  • C is the concentration of nitric oxide
  • T is the current temperature in the photocatalytic reactor
  • a is a constant conversion coefficient, which is between 0.1 and 0.3.
  • the following steps may be further included:
  • the separated nitrogen is discharged and the separated carbon dioxide is stored.
  • nitrogen gas may float above the carbon dioxide after being pressurized to a certain range.
  • the pressure treatment is carried out in a container having an opening at the upper end. When the pressure in the container is sufficient to separate the carbon dioxide and the nitrogen gas, the upper end opening is opened to discharge the nitrogen gas, so that carbon dioxide can be collected.
  • carbon dioxide emissions cause environmental pollution in the air, they can be used in industrial and agricultural production, so that carbon dioxide can be effectively utilized to avoid environmental pollution.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)
  • Treating Waste Gases (AREA)

Abstract

一种汽车尾气处理方法包括如下步骤：对汽车尾气净化器出口的尾气进行实时监控，并对尾气进行分析获取尾气中各种有害气体的种类及含量；根据有害气体的种类对各有害气体进行标识；根据各种有害气体的含量判断尾气是否为超限排放的尾气；若是，则根据所述标识判断尾气中超限排放的有害气体是否只含有一氧化氮；若根据所述标识判断尾气中超限排放的有害气体只含有一氧化氮，则生成催化反应指令，通过该催化反应指令将尾气排放至光催化反应器中进行处理。该方法能够有效地对超限排放的汽车尾气进行及时处理，减少环境污染和人身伤害。

Description

汽车尾气处理方法 技术领域
本发明涉及汽车技术领域，具体涉及一种汽车尾气处理方法。
背景技术
汽车尾气的排放是社会高度关注的问题，汽车排放的尾气中包含有一氧化碳(CO)、一氧化氮(NO)在内的各种有害气体，这些气体一方面造成了环境污染，另一方面也会对人身造成伤害。
例如，汽车尾气中的一氧化氮是一种无色无味、难溶于水的有毒气体，由于一氧化氮带有自由基，这使它的化学性质非常活泼，一旦作为汽车尾气排放到空气中与氧气反应后，便会形成具有腐蚀性的气体——二氧化氮。吸入二氧化氮气体初期便会有轻微的眼及上呼吸道刺激症状，如咽部不适、干咳等，且经过数小时潜伏期后则会发生胸闷、呼吸窘迫、咳嗽、咯泡沫痰、紫绀等，重者甚至可能会使人昏厥。
因此，如何对超限排放的汽车尾气进行进一步处理以降低尾气中的有害气体对环境的污染程度和人身伤害，成为一个亟待解决的问题。
发明内容
针对现有技术的不足，本发明的目的在于提供一种汽车尾气处理方法，能够有效地对超限排放的尾气中的一氧化氮进行及时处理，减少尾气对环境的污染和人身的伤害。
为实现上述目的，本发明采用如下技术方案：
一种汽车尾气处理方法，包括如下步骤：
对汽车尾气净化器出口的尾气进行实时监控，并对尾气进行分析获取尾气中各种有害气体的种类及含量；
根据有害气体的种类对各有害气体进行标识；
根据各种有害气体的含量判断尾气是否为超限排放的尾气；
若是，则根据所述标识判断尾气中超限排放的有害气体是否只含有一氧化氮；
若根据所述标识判断尾气中超限排放的有害气体只含有一氧化氮，则生成催化反应指令，通过该催化反应指令将尾气排放至光催化反应器中进行处理。
与现有技术相比，本发明的一种汽车尾气处理方法，通过对汽车尾气中所含有的有害气体的种类及含量进行检测，并对各种有害气体进行标识，根据标识及含量将超标排放的有害气体进行分别处理，重点对一氧化氮进行处理，实现有针对性的处理有害气体，可有效的提高尾气处理的效率，避免汽车尾气对环境造成污染和对人身造成伤害。
附图说明
图1为本发明的实施例中一种汽车尾气处理方法的流程示意图。
具体实施方式
下面，结合附图以及具体实施方式，对本发明做进一步描述：
汽车尾气经过净化器之后，其内包含的有害气体通常会处于标准状态，但是在发动机出现故障或者净化器出故障的情况下，可能会出现超标的尾气，本发明主要是针对尾气的二次处理。如图1所示，本实施例所述的一种汽车尾气处理方法，包括如下步骤：
步骤S101，对汽车尾气净化器出口的尾气进行实时监控，并对尾气进行分析获取尾气中各种有害气体的种类及含量。该步骤中对尾气进行检测可利用多个气体检测器。各气体检测器可分别检测出尾气中包含有害气体的种类及含量。该气体检测器至少包括一种用于检测尾气中一氧化氮含量的检测器。
步骤S102，根据有害气体的种类对各有害气体进行标识。可根据不同的气体检测器检测出来的结果对有害气体进行标识。
步骤S103，根据各种有害气体的含量判断尾气是否为超限排放的尾气。若是，则说明尾气中存在至少一种有害气体超过国家的标准，此时执行步骤S104，实现根据标识对超限排放的尾气进行处理。否则，说明汽车尾气无有害气体或者甚至很少至可以忽略，此时返回执行步骤S101进行继续监控。
步骤S104，若是，则根据所述标识判断尾气中超限排放的有害气体是否只含有一氧化氮。若是，则说明尾气中除了一氧化氮含量较高之外，其他有害气体均在标准范围内，此时可以执行步骤S105。
步骤S105，若步骤S104的判断结果为是，即根据所述标识判断尾气中超限排放的有害气体只含有一氧化氮，则生成催化反应指令，通过该催化反应指令将尾气排放至光催化反应器中进行处理。
具体的，本实施例中可以将尾气通过具有二氧化钛光催化反应层并利用紫外灯发射紫外线的方式来对一氧化氮进行吸收，由于本实施例是针对汽车尾气的二次处理，通常汽车尾气中的有害物质的含量通常较低，所以通过光催化反应之后可以彻底将一氧化氮吸收。
作为优选的实施例，所述对汽车尾气净化器出口的尾气进行实时监控，并对尾气进行分析获取尾气中各种有害气体的种类及含量的过程可以包括如下步骤：
通过红外线检测的方式对尾气进行实时监控；
根据被吸收的红外线的波长范围及被吸收的程度，生成相应的电信号；
根据该电信号分析得出有害气体的种类及含量。
由于汽车尾气中通常包含有一氧化氮、碳氢化合物、硫氧化合物、氮氧化合物等各种有害气体。而这些气体中每种气体具有特定的特征吸收谱带与特征频率，当红外光谱落在特征频率带附近的时候会被强烈的吸收。所以可通过相应特征频率的红外光谱来检测尾气中有害气体的成分，及被吸收的外光谱的量可以检测出相应气体的含量。
作为优选的实施例，在根据该电信号分析得出有害气体的种类及含量步骤之前，还可以包括如下步骤：将该电信号依次进行滤波及放大处理。具体可分别通过滤波电路及放大电路对电信号进行滤波及放大处理。通过对电信号进行滤波及放大处理后，可以有效的提高电信号检测的准确度。
在一个实施例中，若步骤S105中，根据所述标识判断尾气中超 限排放的有害气体还含有一氧化碳，则可以生成吸收指令，并在处理完一氧化氮后，通过该吸收指令将尾气排放至具有一氧化碳吸收剂的容器中进行一氧化碳处理。
作为一个较好的实施例，该一氧化碳吸收剂可为一种由多孔无机载体和其上所载有的氮化物和氯化铜的二元配合物构成的组合物，且所述组合物中氮化物可以占0.4-0.8摩尔比。此外，所述无机载体可以为：多孔陶瓷、活性炭或者氧化钛等。该氮化物可为:吡啶及
Figure PCTCN2017075882-appb-000001
的组合物等。该一氧化碳吸收剂可以有效吸收尾气中的一氧化碳。
另外，作为一个较好的实施例，所述将尾气排放至光催化反应器中进行一氧化氮处理的过程具体可以包括：
获取红外线穿过尾气后所得到的红外光强度，并根据所述红外光强度计算尾气中一氧化氮的浓度；本发明实施例中采用了红外线检测的方式来计算一氧化氮的浓度；
实时获取汽车发动机的转速以及所述光催化反应器中的当前温度；可以通过在光催化反应器中放置一个温度传感器来获取到所述当前温度；
根据所述转速、当前温度和浓度计算出参考速度，并根据所述参考速度来调节尾气排放至光催化反应器中的速度。
本实施例中，可以采用如下公式来计算参考速度：
Figure PCTCN2017075882-appb-000002
上式中，VNO为参考速度；r为汽车发动机的转速，C为一氧化氮的浓度，T为光催化反应器中的当前温度，a为常数转换系数，介于0.1-0.3之间。通过控制尾气排放到光催化反应器中的的速度，使得一氧化氮能够在光催化反应器中被更完全的吸收，从而可以有效提高一氧化氮处理的效率。特别的，经过大量的实验数据证明，当a的值取为0.25时，一氧化氮处理的效率最佳。
作为优选的实施例，在根据所述标识对尾气进行处理之后，还可以包括如下步骤：
对已经处理过的汽车尾气进行收集，并进行加压至将尾气中的二氧化碳及氮气进行分离；
将分离后的氮气排放出去，并存储分离出来的二氧化碳。
本实施例中由于氮气的密度比二氧化碳小，经过加压至一定范围之后氮气会浮于二氧化碳至上。如此通过一上端有开口的容器中进行加压处理，当容器中的压强足够将二氧化碳及氮气分离时，将上端开口打开将氮气排放出去，从而可以收集二氧化碳。虽然二氧化碳排放在空气中会造成环境污染，但是其可以用于工农业生产，如此可以有效对二氧化碳进行合理利用，避免污染环境。
对本领域的技术人员来说，可根据以上描述的技术方案以及构思，做出其它各种相应的改变以及形变，而所有的这些改变以及形变都应该属于本发明权利要求的保护范围之内。

Claims (6)

  1. 一种汽车尾气处理方法，其特征在于，包括如下步骤：
    对汽车尾气净化器出口的尾气进行实时监控，并对尾气进行分析获取尾气中各种有害气体的种类及含量；
    根据有害气体的种类对各有害气体进行标识；
    根据各种有害气体的含量判断尾气是否为超限排放的尾气；
    若是，则根据所述标识判断尾气中超限排放的有害气体是否只含有一氧化氮；
    若根据所述标识判断尾气中超限排放的有害气体只含有一氧化氮，则生成催化反应指令，通过该催化反应指令将尾气排放至光催化反应器中进行一氧化氮处理；
    所述将尾气排放至光催化反应器中进行一氧化氮处理的过程包括：获取红外线穿过尾气后所得到的红外光强度，并根据所述红外光强度计算尾气中一氧化氮的浓度；实时获取汽车发动机的转速以及所述光催化反应器中的当前温度；根据所述转速、当前温度和浓度计算出参考速度，并根据所述参考速度来调节尾气排放至光催化反应器中的速度；
    采用如下公式来计算参考速度：
    Figure PCTCN2017075882-appb-100001
    式中，VNO为参考速度；r为汽车发动机的转速，C为一氧化氮的浓度，T为光催化反应器中的当前温度，a为常数转换系数，取值范围为0.1-0.3。
  2. 根据权利要求1所述的汽车尾气处理方法，其特征在于，若 根据所述标识判断尾气中超限排放的有害气体还含有一氧化碳，则生成吸收指令，并在处理完一氧化氮后，通过该吸收指令将尾气排放至具有一氧化碳吸收剂的容器中进行一氧化碳处理。
  3. 根据权利要求2所述的汽车尾气处理方法，其特征在于，所述一氧化碳吸收剂为由多孔无机载体和其上所载有的氮化物和氯化铜的二元配合物构成的组合物，且该组合物中氮化物占0.4-0.8摩尔比；所述无机载体包括：多孔陶瓷、活性炭或者氧化钛；所述氮化物为吡啶及
    Figure PCTCN2017075882-appb-100002
    的组合物。
  4. 根据权利要求1所述的汽车尾气处理方法，其特征在于，所述对汽车尾气净化器出口的尾气进行实时监控，并对尾气进行分析获取尾气中各种有害气体的种类及含量的过程包括：
    通过红外线检测的方式对尾气进行实时监控；
    根据被吸收的红外线的波长范围及被吸收的程度，生成相应的电信号；
    根据该电信号分析得出有害气体的种类及含量。
  5. 根据权利要求4所述的汽车尾气处理方法，其特征在于，在根据该电信号分析得出有害气体的种类及含量步骤之前，还包括将该电信号依次进行滤波及放大处理的步骤。
  6. 根据权利要求1所述的汽车尾气处理方法，其特征在于，在对尾气进行处理之后，还包括：
    对已经处理过的汽车尾气进行收集，并进行加压至将尾气中的二 氧化碳及氮气进行分离；
    将分离后的氮气排放出去，并存储分离出来的二氧化碳。
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