CN106588165B - Aerobic composting multi-gradient oxygen concentration online monitoring device - Google Patents
Aerobic composting multi-gradient oxygen concentration online monitoring device Download PDFInfo
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- CN106588165B CN106588165B CN201611186129.1A CN201611186129A CN106588165B CN 106588165 B CN106588165 B CN 106588165B CN 201611186129 A CN201611186129 A CN 201611186129A CN 106588165 B CN106588165 B CN 106588165B
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/993—Arrangements for measuring process parameters, e.g. temperature, pressure or humidity
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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Abstract
An aerobic composting multi-gradient oxygen concentration on-line monitoring device aims at an industrial aerobic composting system and is designed to integrate multi-gradient oxygen concentration on-line monitoring and recording. The device can realize the free setting of the oxygen concentration monitoring gradient series and the gradient span through the free combination of the functional sleeve and the common sleeve, and can greatly meet the monitoring flexibility. The functional sleeve is externally provided with an air hole, and the interior of the functional sleeve is provided with a gas exchange chamber and a built-in sleeve. The oxygen concentration sensor is arranged in the built-in sleeve, and the front end of the built-in sleeve is provided with a semi-permeable membrane for isolating moisture, harmful gases and partial particles. The functional sleeve, the common sleeve, the built-in sleeve and the gas exchange chamber have good sealing property and heat insulation property. The inside data line pipeline that is equipped with of sleeve pipe can be used to data acquisition and processing terminal and link to each other with oxygen concentration sensor through the data line. The aerobic composting multi-gradient oxygen concentration online monitoring device provided by the invention can realize multi-gradient online monitoring of the oxygen concentration of industrial aerobic composting, has the characteristics of simple operation, high efficiency, high flexibility and high reliability, and has very important significance for evaluation and process improvement of the industrial aerobic composting process.
Description
Technical Field
The invention belongs to the technical field of organic solid waste disposal and resource utilization, and relates to an aerobic composting multi-gradient oxygen concentration online monitoring device.
Background
At present, the annual output of livestock and poultry breeding wastes in China is about 40 hundred million tons, the annual collectable amount of straws in China is about 9 hundred million tons, the utilization rate is low, and the available space is large. Aerobic composting refers to the process of converting organic waste into stable organic fertilizer under the action of microorganisms in an aerobic environment. The traditional aerobic composting mode in China mainly adopts a groove type pile turning mode and a strip pile type mode, so that the production quality of organic fertilizers is ensured, and a proper ventilation mode and pile turning frequency are determined, and the oxygen concentration is a core element.
In the aerobic composting process, the range of the proper oxygen concentration is generally controlled to be 5-15%, so that the whole composting process is ensured to be aerobic by monitoring the oxygen concentration and adjusting ventilation or pile turning frequency according to the oxygen concentration value during aerobic composting test or production, on one hand, the quality of organic fertilizer is ensured, and on the other hand, the emission of harmful gas is reduced.
At present, in the industrial aerobic composting process, the commonly used oxygen concentration sensors comprise two types, one type is an electrochemical type, and the other type is a zirconium oxide type. The electrochemical method is limited by the working environment (the maximum temperature is less than 50 ℃, and the relative humidity is less than 95%), so the method adopted during monitoring is an air pump method, namely, an air duct is extended into the stack body, and the oxygen in the stack body is pumped out by using the air pump, and the method is not suitable for long-term online monitoring. The principle of the zirconia type is that oxygen is ionized at high temperature, the oxygen is monitored through signal conversion, the working temperature of the zirconia type is generally 600-700 ℃, and a probe of the sensor can cause great errors on monitoring results when the probe of the sensor is wet. In actual monitoring, a sleeve is generally arranged outside a sensor and is inserted into a stack body for online monitoring, but the temperature generated by zirconia is too high, so that the fermentation of a local stack body is influenced to a certain extent, and the monitoring result is inaccurate. In addition, the compost environment is abominable, has a large amount of granule heap body materials, tiny particle dust and harmful gas along with, and good filtration edulcoration often can not be played to the good oxygen compost oxygen concentration monitoring devices of batch production in the past to make monitoring devices's oxygen concentration sensor core probe fragile.
In the industrial aerobic composting process, the detection of the oxygen concentration at home and abroad is mostly single-point monitoring, but the aerobic degree of the compost body cannot be comprehensively evaluated.
Disclosure of Invention
In view of the above problems, the present invention provides an aerobic composting multi-gradient oxygen concentration on-line monitoring device, which aims to provide a multi-gradient oxygen concentration on-line monitoring method for an industrial aerobic composting system.
In order to achieve the purpose, the invention adopts the following invention scheme:
an aerobic composting multi-gradient oxygen concentration on-line monitoring device mainly comprises: the oxygen concentration sensor is arranged in the oxygen exchange chamber, and the oxygen concentration sensor is arranged in the oxygen exchange chamber.
The sleeve has a tapered head at one end and a handle portion at the other end so that the entire device extends into the stack. The sleeve is formed by splicing a plurality of sub-sleeves, and the specific number of the sleeves is determined according to the oxygen concentration gradient series required to be monitored. The sub-sleeves are divided into two types, one type is a functional sleeve with a gas exchange chamber arranged inside, the other type is a common hollow stainless steel sleeve, and the stage number of the gradient of the oxygen concentration to be monitored and the span between different gradients can be freely set through the combination of the functional sleeve and the common sleeve. The functional sleeve is provided with a plurality of air holes, the air holes are internally provided with filter screens so as to exchange air with the outside and play a role of rough filtration, and besides, the other parts of the functional sleeve are kept in a completely closed state. Each of the outer wall of the functional sleeve and the outer wall of the gas exchange chamber has a double-layered structure in which a material having good heat insulation properties is filled.
The built-in sleeve is arranged inside the functional sleeve, one end of the built-in sleeve is connected with the functional sleeve in a sealing mode and can be detached, and a semi-permeable membrane is arranged at the other end of the built-in sleeve. The outer wall of the built-in sleeve has a double-layer structure, and a material with good heat insulation property is filled in the double-layer structure.
The oxygen concentration sensor is arranged in the built-in sleeve, a data transmission line of the oxygen concentration sensor penetrates through the built-in sleeve, the functional sleeve, the data line pipeline and the handle part to be connected with the data acquisition and processing terminal, wherein the data line pipeline is arranged in the sleeve, and a small hole through which the data line penetrates adopts strict sealing measures.
The data collecting and processing terminal is connected with the oxygen concentration sensor through a data line, and conversion, data acquisition and data analysis of original data signals can be achieved.
By adopting the technical scheme, the invention mainly has the following advantages:
1. the device is mainly used for an industrial aerobic composting system, can realize on-line multi-gradient monitoring of oxygen concentration data, and has the advantages of simple operation, high reliability and wide adaptability.
2. The oxygen concentration monitoring gradient series of the device and the span between different gradients can be freely combined with the functional sleeve and the common sleeve according to requirements, and the device has strong autonomy and flexibility. The functional sleeve has good sealing performance, and ensures the relative independence of different gradient monitoring and the accuracy of data.
3. The functional sleeve, the common sleeve, the gas exchange chamber and the outer wall of the built-in sleeve of the device all adopt a double-layer structure, wherein materials with good heat insulation property are filled, and the device has good adaptability no matter an electrochemistry or zirconia type oxygen concentration sensor is selected.
4. The inside filter screen that is equipped with of gas pocket of this device can filter large granule thing, and built-in sleeve pipe one end is equipped with the semi-permeable membrane, can filter steam, micro molecule granule, harmful gas, has improved oxygen concentration monitoring accuracy, reliability and has prolonged the life of core probe.
5. The data acquisition and processing terminal of the device is connected with the oxygen concentration sensor, and can realize the monitoring, recording and analysis of multi-gradient oxygen concentration data.
Description of the drawings:
FIG. 1 is a schematic structural diagram of an aerobic composting multi-gradient oxygen concentration on-line monitoring device of the invention.
FIG. 2 is a cross-sectional view of section A-A of the present invention.
In fig. 1, 1 is a handle portion, 2 is a functional sleeve, 3 is a normal sleeve, 4 is an oxygen concentration sensor, 5 is a built-in sleeve, 6 is a semi-permeable membrane, 7 is an air hole, 8 is a cone head, 9 is a data line pipeline, and 10 is a data acquisition and processing terminal.
The specific implementation mode is as follows:
the invention is further described below with reference to the accompanying drawings. The following examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Various substitutions and modifications may be made to the specific structure, device, procedure or material by those skilled in the art without departing from the spirit and scope of the invention.
As shown in figure 1, the sleeve of the monitoring device comprises a functional sleeve (2) and a common sleeve (3). The functional sleeve can be freely combined and spliced with a common sleeve so as to realize oxygen concentration monitoring of different gradient levels and different spans of adjacent gradients. The figure shows two series gradient oxygen concentration monitoring devices with the same span.
The functional sleeve is internally provided with a gas exchange chamber, the gas exchange chamber is provided with a gas hole (7) so as to realize gas exchange with the outside, and a filter screen is arranged in the gas hole to play a role of rough filtration. The functional sleeve is completely closed except for the air hole.
The two ends of the sleeve are respectively connected with the handle part (1) and the conical head (8) so as to facilitate the device to penetrate into the pile body. The radius of the bottom surface of the conical head is slightly larger than the outer diameter of the external sleeve, so that the air hole is prevented from being blocked when the device penetrates into the pile body.
The built-in sleeve (5) is arranged in the functional sleeve, one end of the built-in sleeve is connected with the functional sleeve in a sealing mode and can be detached, and a semi-permeable membrane (6) is arranged at the other end of the built-in sleeve. The semi-permeable membrane can effectively prevent moisture, harmful gases and the like from contacting the oxygen concentration sensor.
The oxygen concentration sensor (4) is arranged in the built-in sleeve, one end of the oxygen concentration sensor is connected with the data line, and the oxygen concentration sensor is connected with the outside through a small hole on the sleeve through a data line pipeline (9) in the sleeve, wherein the small hole adopts strict sealing measures. In practical applications, an oxygen concentration sensor of electrochemical type or zirconia type may be selected as the oxygen concentration sensor to be actually mounted.
The outer walls of the functional sleeve, the common sleeve, the gas exchange chamber and the built-in sleeve all adopt a double-layer structure, wherein materials with good filling and heat insulation performance are adopted, and the device has good adaptability no matter an electrochemical or zirconia type oxygen concentration sensor is selected.
The data collecting and processing terminal (10) is connected with the oxygen concentration sensor through a data line, and conversion, data acquisition and analysis of original data signals can be achieved.
The specific method of use of the present invention is described below in conjunction with the method of the present invention;
1) establishing the gradient series of the oxygen concentration to be monitored and the span between adjacent gradients, and assembling a functional sleeve, a common sleeve, an oxygen concentration sensor, an internal sleeve, a handle part and a conical head.
2) And the data acquisition and processing terminal is connected with the oxygen concentration sensor through a data line and a data line pipeline.
3) The device is inserted into the target stack of the desired measured oxygen concentration.
4) And carrying out on-line monitoring, recording and analysis on the multi-gradient oxygen concentration data by using the data acquisition and processing terminal.
Claims (3)
1. The utility model provides an aerobic composting multi-gradient oxygen concentration on-line monitoring device which characterized in that: the oxygen concentration sensor is arranged in the built-in sleeve, the external sleeve, the common sleeve, the gas exchange chamber and the external wall of the built-in sleeve are double-layered, and heat insulation materials are filled in the oxygen concentration sensor.
2. The aerobic compost multi-gradient oxygen concentration online monitoring device as claimed in claim 1, wherein: the two ends of the sleeve are respectively connected with the handle part and the conical head.
3. The aerobic compost multi-gradient oxygen concentration online monitoring device as claimed in claim 1, wherein: the data acquisition and processing terminal is connected with the oxygen concentration sensor, so that the on-line monitoring, recording and analysis of the multi-gradient oxygen concentration data can be realized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611186129.1A CN106588165B (en) | 2016-12-20 | 2016-12-20 | Aerobic composting multi-gradient oxygen concentration online monitoring device |
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| CN201611186129.1A CN106588165B (en) | 2016-12-20 | 2016-12-20 | Aerobic composting multi-gradient oxygen concentration online monitoring device |
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| CN106588165A CN106588165A (en) | 2017-04-26 |
| CN106588165B true CN106588165B (en) | 2021-03-26 |
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| CN201707311U (en) * | 2010-05-11 | 2011-01-12 | 中国农业大学 | Composting monitoring device |
| CN203741236U (en) * | 2014-03-17 | 2014-07-30 | 中国农业大学 | Oxygen concentration real-time monitoring system for aerobic compositing reactor |
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Effective date of registration: 20220505 Address after: 266000 No. 36 Jinshui Road, Laoshan District, Qingdao City, Shandong Province Patentee after: QINGDAO CHINA SEA ENVIRONMENT ENGINEERING Co.,Ltd. Address before: 100083 No. 17 Qinghua East Road, Beijing, Haidian District Patentee before: CHINA AGRICULTURAL University |
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