CN112557588A - Method for monitoring concentration of combustible gas in biomass stack and preventing spontaneous combustion - Google Patents
Method for monitoring concentration of combustible gas in biomass stack and preventing spontaneous combustion Download PDFInfo
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- CN112557588A CN112557588A CN202011165462.0A CN202011165462A CN112557588A CN 112557588 A CN112557588 A CN 112557588A CN 202011165462 A CN202011165462 A CN 202011165462A CN 112557588 A CN112557588 A CN 112557588A
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 34
- 230000002269 spontaneous effect Effects 0.000 title claims abstract description 34
- 239000002028 Biomass Substances 0.000 title claims abstract description 30
- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000015556 catabolic process Effects 0.000 claims abstract description 13
- 238000006731 degradation reaction Methods 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000010802 sludge Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000004458 analytical method Methods 0.000 claims abstract description 4
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 230000008054 signal transmission Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 239000000446 fuel Substances 0.000 abstract description 15
- 206010000369 Accident Diseases 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 36
- 238000012545 processing Methods 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
- G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a threshold to release an alarm or displaying means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/222—Solid fuels, e.g. coal
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/16—Combustible gas alarms
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Combustion & Propulsion (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Pathology (AREA)
- Emergency Management (AREA)
- Toxicology (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Computer Networks & Wireless Communication (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to a method for monitoring the concentration of combustible gas in a biomass stack and preventing spontaneous combustion, which comprises the following steps: detecting the concentration of combustible gas released by degradation of the biomass stack in real time based on a gas detector arranged in the biomass stock ground stack; the device is used for detecting the stack sample sampled periodically through industrial analysis to measure the water content and the sludge content in the stack; calculating the gas production rate of the stack according to the concentration of the combustible gas detected in real time, conjointly with the water content and the sludge content of the stack which are measured by regular sampling, presuming whether the temperature interval of the stack is in and whether the rapid temperature rise phenomenon occurs, monitoring whether the stack of the biomass material is spontaneously combusted in real time, and if so, sending stack spontaneous combustion risk early warning information; and receiving stack spontaneous combustion risk early warning information sent by the data processing center through the user terminal. The invention can realize all-weather and all-dimensional real-time monitoring on the fuel stack, prevent spontaneous combustion of the stack and avoid fire accidents caused by fuel degradation.
Description
Technical Field
The invention belongs to the technical field of material stacking safety detection, and particularly relates to a method for monitoring the concentration of combustible gas in a biomass stack and preventing spontaneous combustion.
Background
The biomass fuel mainly comprises crop straws, barks and the like, belongs to combustible solid classified as class C of fire hazard risk, and mainly comprises cellulose, hemicellulose, lignin and the like. As the fuel has high organic matter content, loose structure, easy putrefaction and deterioration and generates some combustible gases, the ignition point is very low, the possibility of spontaneous combustion is very high, once a fire disaster occurs in the stack, the fire spread is rapid, the threat to adjacent facilities and buildings is very great, and the fuel stacks have great fire hazard.
At present, most of biomass power plants adopt an artificial temperature measurement mode and an infrared camera to prevent spontaneous combustion of the fuel stack. For example, in the prior art, a straw temperature measuring device (CN 201803810U) of a biomass power plant exists, in the implementation of the device, an inspector needs to hold a temperature measurer for inspection, the temperature measurement is random, the measured temperature needs to be read in a few minutes, and real-time online monitoring cannot be realized; although the patent can monitor the temperature of the material pile in real time, the fuel in the material pile can not be degraded to release combustible gas, the local temperature rise is predicted, and the spontaneous combustion early warning level needs to be improved.
Disclosure of Invention
The invention aims to provide a method for monitoring the concentration of combustible gas in a biomass stack and preventing spontaneous combustion, which can realize all-weather and all-around real-time monitoring of the fuel stack, prevent spontaneous combustion of the stack and avoid fire accidents caused by fuel degradation.
The invention provides a method for monitoring the concentration of combustible gas in a biomass stack and preventing spontaneous combustion, which comprises the following steps:
detecting the concentration of combustible gas released by the degradation of the biomass stack in real time based on a gas detector arranged in the material yard stack;
detecting the stack sample sampled regularly through industrial analysis to measure the water content and sludge content in the stack;
calculating the gas production rate of the stack according to the concentration of the combustible gas detected in real time, conjointly with the water content and the sludge content of the stack which are measured by regular sampling, presuming whether the temperature interval of the stack is in and whether the rapid temperature rise phenomenon occurs, monitoring whether the stack of the biomass material is spontaneously combusted in real time, and if so, sending stack spontaneous combustion risk early warning information;
and receiving stack spontaneous combustion risk early warning information sent by the data processing center through a user terminal.
Further, the number of the gas detectors to be installed is increased or decreased according to the number of stacks and the size of the stacks.
Further, the method further comprises:
the concentration of the combustible gas is measured in real time according to the gas detector, the degradation of organic matters and the local temperature rise of the stack are judged according to the variation trend of the concentration of the produced gas, and areas which are likely to generate rapid temperature rise are marked in advance to prevent the stack from generating spontaneous combustion.
Further, the gas detector adopts a wireless signal transmission mode to perform data transmission with the data processing center.
By means of the scheme, the method for preventing spontaneous combustion by monitoring the concentration of the combustible gas of the biomass stack is based on the scientific principle of natural occurrence of the stack in the stock ground, the stack temperature change and the combustible gas release are predicted according to the change trend of the gas production rate of the stack, spontaneous combustion of the stack is prevented, the reliability and prediction level of fire prevention of the stock ground are improved, all-weather and all-dimensional real-time monitoring on the fuel stack can be achieved, spontaneous combustion of the stack is prevented, and fire accidents caused by fuel degradation are avoided.
The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, the following is a detailed description of the preferred embodiments of the present invention.
Drawings
FIG. 1 is a schematic diagram of the application of the method for monitoring the concentration of combustible gas in a biomass stack to prevent spontaneous combustion according to the invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1, the method for monitoring the concentration of combustible gas in a biomass stack to prevent spontaneous combustion in the embodiment includes:
the concentration of combustible gas (such as methane and the like) released by the degradation of the biomass stack is detected in real time based on a gas detector arranged in the biomass stock ground stack.
Detecting the stack sample sampled regularly in a fuel testing chamber through industrial analysis to measure the water content and the sludge content in the stack; the sampling detection period can be determined according to the actual situation in the field.
In a data processing center, the gas production rate of the stack is calculated according to the concentration of the combustible gas detected in real time, the temperature interval of the stack and whether the rapid temperature rise phenomenon occurs are presumed by combining the water content and the sludge content of the stack which are sampled and measured at regular intervals, whether the stack of the biomass material spontaneously ignites or not is monitored in real time, and if yes, stack spontaneous combustion risk early warning information is sent.
The stack spontaneous combustion risk early warning information sent by the data processing center is received through the user terminal, and the combustible gas concentration data and the processing result data received by the data processing center can be received, such as a real-time trend curve, and the data can be inquired in real time, and the position (position), name and the like of the early warning stack can be displayed. The user terminal may be a supervisory computer or a handset receiving terminal.
According to the method for monitoring the concentration of the combustible gas in the biomass stack and preventing spontaneous combustion, whether stack biomass is degraded or not is judged through the stack gas production rate, the water content of fuel, the mud content and the like, the stack temperature change and the combustible gas release condition are predicted, preventive measures are taken, spontaneous combustion of the stack in a stock ground is prevented, all-weather and all-around real-time monitoring of the stack can be realized, spontaneous combustion of the stack is prevented, and the occurrence of fire accidents caused by fuel degradation is avoided.
In the present embodiment, the number of gas detectors installed is increased or decreased depending on the number of stacks and the size of the stacks.
In this embodiment, the data processing center is further configured to measure the concentration of the combustible gas in real time according to the gas detector, determine degradation of the organic matter and local temperature rise of the stack according to a gas production concentration variation trend, and mark an area where rapid temperature rise may occur in advance, so as to prevent spontaneous combustion of the stack.
In this embodiment, the gas detector performs data transmission with the data processing center by using a wireless signal transmission method. The gas detector adopts wireless signal transmission, does not need piping wiring, has the characteristics of simple and convenient installation and disassembly, economy and applicability, and does not influence the normal use of fuel stacking and production.
The data processing center comprises a data processing system and a wireless signal transmission device. The wireless signal transmission device has long signal transmission distance, the open distance can reach 1000 meters, and the transmission data is stable and has no loss. The data processing system comprises a historical data storage module, and compares the anaerobic degradation gas production rate of the organic matters obtained by real-time analysis with the temperature interval of the stacks and the accumulated data according to a relation model of the biomass stack temperature, the anaerobic degradation gas production rate of the organic matters, the water content and the sludge content, corrects the early warning judgment model in time, and improves the accuracy of system judgment.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A method for monitoring the concentration of combustible gas in a biomass stack to prevent spontaneous combustion is characterized by comprising the following steps:
detecting the concentration of combustible gas released by degradation of the biomass stack in real time based on a gas detector arranged in the biomass stock ground stack;
detecting the stack sample sampled regularly through industrial analysis to measure the water content and sludge content in the stack;
calculating the gas production rate of the stack according to the concentration of the combustible gas detected in real time, conjointly with the water content and the sludge content of the stack which are measured by regular sampling, presuming whether the temperature interval of the stack is in and whether the rapid temperature rise phenomenon occurs, monitoring whether the stack of the biomass material is spontaneously combusted in real time, and if so, sending stack spontaneous combustion risk early warning information;
and receiving stack spontaneous combustion risk early warning information sent by the data processing center through a user terminal.
2. The method for monitoring the combustible gas concentration of a biomass stack against spontaneous combustion as claimed in claim 1, wherein the number of the gas detectors is increased or decreased according to the number of stacks and the size of the stacks.
3. The method for monitoring the combustible gas concentration of a biomass stack against spontaneous combustion as claimed in claim 1, further comprising:
the concentration of the combustible gas is measured in real time according to the gas detector, the degradation of organic matters and the local temperature rise of the stack are judged according to the variation trend of the concentration of the produced gas, and areas which are likely to generate rapid temperature rise are marked in advance to prevent the stack from generating spontaneous combustion.
4. The method for monitoring the concentration of the combustible gas in the biomass stack to prevent spontaneous combustion as claimed in claim 1, wherein the gas detector is in data transmission with the data processing center by means of wireless signal transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011165462.0A CN112557588A (en) | 2020-10-27 | 2020-10-27 | Method for monitoring concentration of combustible gas in biomass stack and preventing spontaneous combustion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011165462.0A CN112557588A (en) | 2020-10-27 | 2020-10-27 | Method for monitoring concentration of combustible gas in biomass stack and preventing spontaneous combustion |
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| Publication Number | Publication Date |
|---|---|
| CN112557588A true CN112557588A (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011165462.0A Pending CN112557588A (en) | 2020-10-27 | 2020-10-27 | Method for monitoring concentration of combustible gas in biomass stack and preventing spontaneous combustion |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116952413A (en) * | 2023-09-19 | 2023-10-27 | 徐州凌南生物科技有限公司 | Temperature measurement method and system for biomass fuel stack |
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| CN201449649U (en) * | 2009-07-09 | 2010-05-05 | 南京武大卓越科技有限公司 | Spontaneous combustion monitoring and warning system for coal |
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| CN107065923A (en) * | 2017-03-15 | 2017-08-18 | 侯思明 | A kind of spontaneous combustion monitoring method and system |
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2020
- 2020-10-27 CN CN202011165462.0A patent/CN112557588A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201449649U (en) * | 2009-07-09 | 2010-05-05 | 南京武大卓越科技有限公司 | Spontaneous combustion monitoring and warning system for coal |
| CN106325188A (en) * | 2016-10-18 | 2017-01-11 | 华电重工股份有限公司 | Intelligent monitoring method and system, monitoring device and system of stockyard |
| CN107065923A (en) * | 2017-03-15 | 2017-08-18 | 侯思明 | A kind of spontaneous combustion monitoring method and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116952413A (en) * | 2023-09-19 | 2023-10-27 | 徐州凌南生物科技有限公司 | Temperature measurement method and system for biomass fuel stack |
| CN116952413B (en) * | 2023-09-19 | 2023-11-24 | 徐州凌南生物科技有限公司 | Temperature measurement method and system for biomass fuel stack |
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Application publication date: 20210326 |