CN115096376A - A method for real-time monitoring of greenhouse gas emissions from straw bale storage - Google Patents

A method for real-time monitoring of greenhouse gas emissions from straw bale storage Download PDF

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CN115096376A
CN115096376A CN202211004398.7A CN202211004398A CN115096376A CN 115096376 A CN115096376 A CN 115096376A CN 202211004398 A CN202211004398 A CN 202211004398A CN 115096376 A CN115096376 A CN 115096376A
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straw
greenhouse gas
straw bundle
bundle
sensor
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姚宗路
傅国浩
赵立欣
霍丽丽
贾吉秀
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Institute of Environment and Sustainable Development in Agriculturem of CAAS
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Institute of Environment and Sustainable Development in Agriculturem of CAAS
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    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
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    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract

The invention discloses a method for monitoring greenhouse gas emission amount stored in straw bundles in real time, which relates to the technical field of greenhouse gas emission, and adopts the technical scheme that: the method specifically comprises the following steps: s1: weighing the straw bundles, recording the weight as m, and then putting the straw bundles into a straw bundle storage box; s2: measuring the stacking size of the straw bundles and the size of the straw bundle storage box body, and recording as V 1 And V 2 Then putting the straw bundles into a straw bundle storage box; s3: uniformly selecting a plurality of insertion sites on the compressed section of the straw bundle, and vertically inserting a monitoring device into the straw bundle; s4: a plurality of detection sites are arranged on each insertion site according to the height above the ground, and a greenhouse gas sensor and a temperature and humidity sensor are distributed on each detection site; s5: sampling the interior and exterior of the straw bundle according to a time period; s6: and calculating the total amount of the greenhouse gas emission through a formula. The method can accurately monitor the greenhouse gas emission rate, emission factors and total emission amount in the storage process.

Description

一种实时监测秸秆捆存储温室气体排放量的方法A method for real-time monitoring of greenhouse gas emissions from straw bale storage

技术领域technical field

本发明涉及温室气体排放技术领域，更具体地说，它涉及一种实时监测秸秆捆存储温室气体排放量的方法。The invention relates to the technical field of greenhouse gas emissions, and more particularly, to a method for monitoring the greenhouse gas emissions of straw bale storage in real time.

背景技术Background technique

农业农村减排固碳既是碳达峰、碳中和的重要举措，也是潜力所在。2014年中国农业温室气体排放总量约为8.3×108 tCO2e，占全国的7%左右，如果加上农业生产用能和生活用能的排放，中国农业农村温室气体排放量占全国温室气体排放量的15%左右。我国秸秆资源丰富，秸秆总产量居世界首位，秸秆综合利用具有培肥土壤、减施化肥、节约饲料粮、替代化石能源、保护林草植被等方面的作用。同时，秸秆综合利用具有减排固碳作用，预测2030年、2060年秸秆综合利用减排固碳潜力分别为1.52×108 tCO2e、2.20×108 tCO2e，可为我国碳达峰、碳中和目标作出积极贡献。Carbon emission reduction and carbon sequestration in agriculture and rural areas is not only an important measure for carbon peaking and carbon neutralization, but also a potential. In 2014, China's total agricultural greenhouse gas emissions were about 8.3×10 8 tCO 2 e, accounting for about 7% of the national total. If the emissions of agricultural production energy and domestic energy are added, China's agricultural and rural greenhouse gas emissions accounted for the national greenhouse gas emissions. about 15% of gas emissions. my country is rich in straw resources, and the total straw output ranks first in the world. The comprehensive utilization of straw has the functions of fertilizing soil, reducing the application of chemical fertilizers, saving feed grains, replacing fossil energy, and protecting forest and grass vegetation. At the same time, the comprehensive utilization of straw has the effect of emission reduction and carbon sequestration. It is predicted that the carbon emission reduction and carbon sequestration potential of comprehensive utilization of straw in 2030 and 2060 will be 1.52×10 8 tCO2e and 2.20×10 8 tCO2e respectively, which can be used for carbon peaking and carbon neutrality in China. target to make a positive contribution.

目前，秸秆综合利用仍存在温室气体排放基数不明、底数不清等问题，且现有的对秸秆温室气体排放量的测算方法多集中在后端利用中温室气体排放，在前端运输、存储过程中秸秆捆的温室气体排放量的研究仍不清晰，因此，科学评价秸秆综合利用的减排固碳底数及未来潜力，对秸秆捆堆放过程中温室气体排放量的测算具有重大的现实意义。At present, the comprehensive utilization of straw still has problems such as unclear greenhouse gas emission base and base, and the existing measurement methods for greenhouse gas emissions of straw mostly focus on greenhouse gas emissions in the back-end utilization, and in the front-end transportation and storage process. The research on the greenhouse gas emissions of straw bales is still unclear. Therefore, it is of great practical significance to scientifically evaluate the carbon reduction and carbon sequestration base and future potential of comprehensive utilization of straw for the measurement of greenhouse gas emissions during the stacking of straw bales.

发明内容SUMMARY OF THE INVENTION

由于秸秆捆在打捆过程中是通过挤压成型的，故在秸秆捆内部存在较多细小孔隙和空气。秸秆捆存储过程中内部气体浓度会发生变化，产生温室气体。本发明的目的是提供一种实时监测秸秆捆存储温室气体排放量的方法，该方法可以对存储过程温室气体排放速率、排放因子和排放总量进行准确监测。Since the straw bales are formed by extrusion during the baling process, there are many fine pores and air inside the straw bales. During the storage of straw bales, the internal gas concentration will change, resulting in greenhouse gases. The purpose of the present invention is to provide a method for real-time monitoring of greenhouse gas emissions from storage of straw bales, which can accurately monitor the greenhouse gas emission rate, emission factor and total emission during the storage process.

本发明的上述技术目的是通过以下技术方案得以实现的：一种实时监测秸秆捆存储温室气体排放量的方法，具体包括以下步骤：The above-mentioned technical purpose of the present invention is achieved through the following technical solutions: a method for real-time monitoring of greenhouse gas emissions from straw bale storage, which specifically includes the following steps:

S1：对秸秆捆进行称量，质量记为m，将秸秆粉碎压实至内部无空气时测量其尺寸，记算其密度为

Figure 989420DEST_PATH_IMAGE001
；S1: Weigh the straw bale, the mass is recorded as m, the size is measured when the straw is crushed and compacted until there is no air inside, and the density is recorded as
Figure 989420DEST_PATH_IMAGE001
;

S2：将秸秆捆放入秸秆捆存储箱体内，对秸秆捆的堆放尺寸和秸秆捆存储箱体的尺寸进行测量，记为V1和V2，；S2: Put the straw bales into the straw bale storage box, measure the stacking size of the straw bale and the size of the straw bale storage box, and record them as V 1 and V 2 ;

S3：在秸秆捆内部进行检测位点布置；S3: Arrange the detection sites inside the straw bale;

S4：根据时间周期对秸秆捆内部和外部进行采样；S4: Sampling the inside and outside of the straw bale according to the time period;

S5：通过以下公式计算温室气体排放总量；S5: Calculate the total amount of greenhouse gas emissions by the following formula;

Figure 360227DEST_PATH_IMAGE002
Figure 360227DEST_PATH_IMAGE002

DF0=

Figure 759722DEST_PATH_IMAGE003
DF 0 =
Figure 759722DEST_PATH_IMAGE003

DF1=

Figure 102848DEST_PATH_IMAGE004
DF 1 =
Figure 102848DEST_PATH_IMAGE004

Figure 729264DEST_PATH_IMAGE005
Figure 729264DEST_PATH_IMAGE005

Figure 400416DEST_PATH_IMAGE006
Figure 400416DEST_PATH_IMAGE006

其中，

Figure 370646DEST_PATH_IMAGE007
为秸秆捆内部空气体积；
Figure 443645DEST_PATH_IMAGE001
为秸秆粉碎压实至内部无空气时的密度；
Figure 995890DEST_PATH_IMAGE008
为箱体内秸秆捆外部温室气体浓度变化率；
Figure 154339DEST_PATH_IMAGE009
为第i个检测位点的温室气体浓度变化率；DF0为秸秆捆外部温室气体排放速率；DF1为秸秆捆内部温室气体排放速率；n为检测位点数；F为秸秆捆存储排放因子，单位mg·kg-1·h-1；M为气体分子量；T为温度；P为当地大气压强；
Figure 334785DEST_PATH_IMAGE010
为标准大气压强；D为排放总量，单位g·kg-1；d为采样周期，单位D。in,
Figure 370646DEST_PATH_IMAGE007
is the air volume inside the straw bale;
Figure 443645DEST_PATH_IMAGE001
It is the density when the straw is crushed and compacted to no air inside;
Figure 995890DEST_PATH_IMAGE008
is the rate of change of the greenhouse gas concentration outside the straw bales in the box;
Figure 154339DEST_PATH_IMAGE009
is the change rate of greenhouse gas concentration at the i-th detection site; DF 0 is the greenhouse gas emission rate outside the straw bale; DF 1 is the greenhouse gas emission rate inside the straw bale; n is the number of detection sites; F is the straw bale storage emission factor, The unit is mg·kg -1 ·h -1 ; M is the molecular weight of the gas; T is the temperature; P is the local atmospheric pressure;
Figure 334785DEST_PATH_IMAGE010
is the standard atmospheric pressure; D is the total emission, in g·kg -1 ; d is the sampling period, in D.

进一步的，所述秸秆捆存储箱体包括底座和箱体，所述箱体的底部与底座连接，所述箱体的顶部外侧设有太阳能电池板，所述箱体的顶部内侧设有风扇和环境监控系统。Further, the straw bale storage box includes a base and a box, the bottom of the box is connected to the base, a solar panel is arranged on the outside of the top of the box, and a fan and a fan are arranged on the inside of the top of the box. Environmental monitoring system.

进一步的，所述环境监控系统包括温度传感器、湿度传感器、CO2传感器、CH4传感器和N2O传感器和网络传输系统组成。Further, the environment monitoring system includes a temperature sensor, a humidity sensor, a CO 2 sensor, a CH 4 sensor, a N 2 O sensor and a network transmission system.

进一步的，所述S3中检测位点布置的具体步骤是：Further, the specific steps of the detection site arrangement in the S3 are:

S3-1：在秸秆捆压缩截面布置插入位点；S3-1: Arrange insertion sites on the compressed section of straw bale;

S3-2：在每个插入位点上根据离地高度分别布置多个检测位点，每个检测位点上布有一个温室气体传感器和温湿度传感器。S3-2: Arrange multiple detection sites on each insertion site according to the height above the ground, and each detection site is provided with a greenhouse gas sensor and a temperature and humidity sensor.

综上所述，本发明具有以下有益效果：该秸秆捆存储温室气体监测方法可以对存储过程温室气体排放速率、排放因子和排放总量进行准确监测。To sum up, the present invention has the following beneficial effects: the greenhouse gas monitoring method for storing straw bale can accurately monitor the greenhouse gas emission rate, emission factor and total emission during the storage process.

附图说明Description of drawings

图1是本发明实施例中秸秆捆存储箱体的结构示意图；FIG. 1 is a schematic structural diagram of a straw bale storage box in an embodiment of the present invention;

图2是本发明实施例中方形秸秆捆插入位点和检测位点的示意图。FIG. 2 is a schematic diagram of the insertion site and the detection site of the square straw bale in the embodiment of the present invention.

图中：1、底座；2、箱体；3、太阳能电池板；4、风扇；5、环境监控系统；101、基座；102、回形凹槽。In the figure: 1. Base; 2. Box; 3. Solar panel; 4. Fan; 5. Environmental monitoring system; 101, Base; 102, Circular groove.

具体实施方式Detailed ways

以下结合附图1和附图2对本发明作进一步详细说明。The present invention will be further described in detail below in conjunction with accompanying drawings 1 and 2 .

实施例：一种实时监测秸秆存储温室气体排放量的方法，如图1和图2所示，本实施例以方形秸秆捆为例，具体包括以下步骤：Example: A method for real-time monitoring of greenhouse gas emissions from straw storage, as shown in Figures 1 and 2, this example takes a square straw bale as an example, and specifically includes the following steps:

S1：对秸秆捆进行称量，质量记为m，将一定质量秸秆粉碎压实至内部无空气时测量其尺寸，记算其密度为

Figure 527869DEST_PATH_IMAGE011
；S1: Weigh the straw bale, the mass is recorded as m, the size of the straw bales is measured when a certain quality of straw is crushed and compacted until there is no air inside, and the density is recorded as
Figure 527869DEST_PATH_IMAGE011
;

S2：对秸秆捆的堆放尺寸和秸秆捆存储箱体的尺寸进行测量，记为V1和V2；S2: measure the stacking size of straw bales and the size of the storage box for straw bales, denoted as V 1 and V 2 ;

S3：如图2所示，在秸秆横截面对角线上选取5个插入位点，将采气管垂直插入秸秆捆内，插入深度为秸秆捆高度；S3: As shown in Figure 2, select 5 insertion sites on the diagonal line of the straw cross section, and vertically insert the gas extraction pipe into the straw bale, and the insertion depth is the height of the straw bale;

S4：在每个插入位点上根据离地高度分别布置3个检测位点，每个检测位点上布有一个温室气体传感器和温湿度传感器，对秸秆捆内部局部地区的温室气体浓度和秸秆温湿度进行监测，故单个监测位点可以获得15个温室气体浓度（CO2、CH4、N2O）和秸秆温湿度数据；S4: Three detection sites are arranged at each insertion site according to the height from the ground, and a greenhouse gas sensor and a temperature and humidity sensor are arranged on each detection site to detect the greenhouse gas concentration and straw in the local area inside the straw bale. Temperature and humidity are monitored, so a single monitoring site can obtain 15 greenhouse gas concentrations (CO 2 , CH 4 , N 2 O ) and straw temperature and humidity data;

S5：根据时间周期d对秸秆捆内部和外部进行采样，秸秆捆外部采用是采用的秸秆捆存储箱体的环境监控系统进行采样；S5: Sampling the inside and outside of the straw bale according to the time period d, and the outside of the straw bale is sampled by the environmental monitoring system of the straw bale storage box;

S6：通过以下公式计算温室气体排放总量；S6: Calculate the total amount of greenhouse gas emissions by the following formula;

Figure 729043DEST_PATH_IMAGE002
Figure 729043DEST_PATH_IMAGE002

DF0=

Figure 141832DEST_PATH_IMAGE003
DF 0 =
Figure 141832DEST_PATH_IMAGE003

Figure 719444DEST_PATH_IMAGE012
F1=
Figure 907980DEST_PATH_IMAGE004
Figure 719444DEST_PATH_IMAGE012
F 1 =
Figure 907980DEST_PATH_IMAGE004

Figure 545634DEST_PATH_IMAGE013
Figure 545634DEST_PATH_IMAGE013

Figure 678675DEST_PATH_IMAGE006
Figure 678675DEST_PATH_IMAGE006

其中，

Figure 292934DEST_PATH_IMAGE007
为秸秆捆内部空气体积；
Figure 460610DEST_PATH_IMAGE001
为秸秆粉碎压实至内部无空气时的密度；
Figure 269166DEST_PATH_IMAGE008
为箱体内秸秆捆外部温室气体浓度变化率；
Figure 623924DEST_PATH_IMAGE009
为第i个检测位点的温室气体浓度变化率；DF0为秸秆捆外部温室气体排放速率；DF1为秸秆捆内部温室气体排放速率；F为秸秆捆存储排放因子，单位mg·kg-1·h-1；M为气体分子量；T为温度；P为当地大气压强；
Figure 684284DEST_PATH_IMAGE010
为标准大气压强；D为排放总量，单位g·kg-1；d为采样周期，单位D。in,
Figure 292934DEST_PATH_IMAGE007
is the air volume inside the straw bale;
Figure 460610DEST_PATH_IMAGE001
It is the density when the straw is crushed and compacted to no air inside;
Figure 269166DEST_PATH_IMAGE008
is the rate of change of the greenhouse gas concentration outside the straw bales in the box;
Figure 623924DEST_PATH_IMAGE009
is the change rate of greenhouse gas concentration at the i-th detection site; DF 0 is the greenhouse gas emission rate outside the straw bale; DF 1 is the greenhouse gas emission rate inside the straw bale; F is the storage emission factor of the straw bale, in mg·kg -1 h -1 ; M is the molecular weight of the gas; T is the temperature; P is the local atmospheric pressure;
Figure 684284DEST_PATH_IMAGE010
is the standard atmospheric pressure; D is the total emission, in g·kg -1 ; d is the sampling period, in D.

如图1所示，秸秆捆存储箱体包括底座1和箱体2，底座1分为基座101和回形凹槽102，回形凹槽102环形固定安装在基座101的顶部，箱体2的底部插入回形凹槽102内，箱体2的顶部外侧固定安装有太阳能电池板3，太阳能电池板3为电性元件进行供电，箱体2的顶部内侧安装有风扇4和环境监控系统5。As shown in FIG. 1 , the straw bale storage box includes a base 1 and a box 2. The base 1 is divided into a base 101 and a loop-shaped groove 102. The loop-shaped groove 102 is annularly fixed on the top of the base 101, and the box body The bottom of the box 2 is inserted into the back-shaped groove 102, the top outer side of the box body 2 is fixedly installed with a solar panel 3, the solar battery panel 3 supplies power to the electrical components, and the top inner side of the box body 2 is installed with a fan 4 and an environmental monitoring system 5.

优选的，环境监控系统5包括温度传感器、湿度传感器、CO2传感器、CH4传感器和N2O传感器和网络传输系统组成，温度传感器、湿度传感器、CO2传感器、CH4传感器和N2O传感器都是检测秸秆捆外部的流动空气的各项参数，网络传输系统用于将信息传输到终端。Preferably, the environmental monitoring system 5 comprises a temperature sensor, a humidity sensor, a CO 2 sensor, a CH 4 sensor, a N 2 O sensor and a network transmission system, a temperature sensor, a humidity sensor, a CO 2 sensor, a CH 4 sensor and an N 2 O sensor. All are to detect various parameters of the flowing air outside the straw bale, and the network transmission system is used to transmit the information to the terminal.

本具体实施例仅仅是对本发明的解释，其并不是对本发明的限制，本领域技术人员在阅读完本说明书后可以根据需要对本实施例做出没有创造性贡献的修改，但只要在本发明的权利要求范围内都受到专利法的保护。This specific embodiment is only an explanation of the present invention, and it does not limit the present invention. Those skilled in the art can make modifications without creative contribution to the present embodiment as required after reading this specification, but as long as the rights of the present invention are used All claims are protected by patent law.

Claims (4)

1. A method for monitoring the greenhouse gas emission amount stored in straw bundles in real time is characterized by comprising the following steps: the method specifically comprises the following steps:
s1: weighing straw bundle, recording mass as m, crushing and compacting straw until no air exists in the straw bundle, measuring size of the straw bundle, and recording density of the straw bundle as
Figure 567274DEST_PATH_IMAGE001
；
S2: putting the straw bundle into the strawIn the bundle storage box body, measuring the stacking size of the straw bundles and the size of the straw bundle storage box body, and recording as V 1 And V 2 ，；
S3: arranging detection sites inside the straw bundle;
s4: sampling the interior and exterior of the straw bundle according to a time period;
s5: calculating the total amount of greenhouse gas emission by the following formula;
Figure 119478DEST_PATH_IMAGE002
DF 0 =
Figure 30844DEST_PATH_IMAGE003
DF 1 =
Figure 518457DEST_PATH_IMAGE004
Figure 258880DEST_PATH_IMAGE005
Figure 614775DEST_PATH_IMAGE006
wherein,
Figure 858674DEST_PATH_IMAGE001
crushing and compacting the straws to the density when no air exists in the straw;
Figure 877708DEST_PATH_IMAGE007
the change rate of the concentration of the greenhouse gas outside the straw bundle in the box body;
Figure 980794DEST_PATH_IMAGE008
is the greenhouse gas of the ith detection siteRate of change of bulk concentration; DF (Decode-feed) 0 The rate of emission of greenhouse gases outside the straw bale; DF (Deck-and-Place) device 1 The discharge rate of greenhouse gases in the straw bundle; n is the number of detection sites, F is a straw bundle storage and discharge factor with the unit of mg.kg -1 ·h -1 M is the molecular weight of the gas, T is the temperature, P is the local atmospheric pressure,
Figure 874800DEST_PATH_IMAGE009
standard atmospheric pressure; d is the total amount of emissions in g.kg -1 ；
Figure 238785DEST_PATH_IMAGE010
The volume of air inside the straw bundle; d is the sampling period, unit D.
2. The method for monitoring the greenhouse gas emission amount of the straw bundle in real time as claimed in claim 1, wherein the method comprises the following steps: the straw bundle storage box comprises a base and a box body, the bottom of the box body is connected with the base, a solar cell panel is arranged on the outer side of the top of the box body, and a fan and an environment monitoring system are arranged on the inner side of the top of the box body.
3. The method for monitoring the greenhouse gas emission amount of the straw bundle in real time as claimed in claim 2, wherein the method comprises the following steps: the environment monitoring system comprises a temperature sensor, a humidity sensor and CO 2 Sensor, CH 4 Sensor and N 2 The system comprises an O sensor and a network transmission system.
4. The method for storing greenhouse gas emissions by straw bundles according to claim 1, wherein the concrete steps of detecting the location point arrangement in S3 are as follows:
s3-1: inserting points are uniformly arranged on the compressed section of the straw bundle;
s3-2: a plurality of detection sites are respectively arranged on each insertion site according to the height above the ground, and a greenhouse gas sensor and a temperature and humidity sensor are distributed on each detection site.
CN202211004398.7A 2022-08-22 2022-08-22 A method for real-time monitoring of greenhouse gas emissions from straw bale storage Pending CN115096376A (en)

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