CN117821089A - Safety monitoring method for food residue pyrolysis carbonization pool - Google Patents

Safety monitoring method for food residue pyrolysis carbonization pool Download PDF

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Publication number
CN117821089A
CN117821089A CN202410022424.1A CN202410022424A CN117821089A CN 117821089 A CN117821089 A CN 117821089A CN 202410022424 A CN202410022424 A CN 202410022424A CN 117821089 A CN117821089 A CN 117821089A
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gas
safety monitoring
food
carbonization
data
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CN117821089B (en
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皮猛
张艳会
章双霜
张丹丹
张晓晓
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Beijing Chaoyang Environment Group Co ltd
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Beijing Chaoyang Environment Group Co ltd
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/30Controlling by gas-analysis apparatus

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Incineration Of Waste (AREA)

Abstract

The invention provides a safety monitoring method of a food residue pyrolysis carbonization pond, which is characterized in that harmful gas concentration, oxygen concentration and temperature parameters in the carbonization pond and each gas discharge pipeline are collected in real time, real-time analysis is carried out on data through a central control platform, historical data analysis is carried out under the condition that the data can normally work after the real-time analysis, the pyrolysis process of the food residue is finely managed through transverse comparison of curve values, corresponding treatment is carried out when the parameters do not accord with preset ranges, the discharge of substandard gas is reduced, and after each instruction is given, the data can be executed by a manual confirmation party, so that the safety production is ensured.

Description

Safety monitoring method for food residue pyrolysis carbonization pool
Technical Field
The invention belongs to the technical field of data monitoring, and particularly relates to a safety monitoring method of a food residue pyrolysis carbonization pond.
Background
Current food waste treatment methods are usually used for burying or feeding domestic fowl and livestock, but the treatment methods generally cause food waste to be spoiled due to improper treatment, which is not beneficial to the development of environmental protection work, and in severe cases, can cause disease transmission.
Therefore, a method for pyrolyzing and carbonizing food residues is proposed, wherein after the food residues are placed in a carbonization tank, the temperature is raised to treat the food residues, in order to ensure the safety, a sensor is usually arranged in the environment or the carbonization tank, the concentration of harmful gases is detected based on sensor data, and when the concentration of the harmful gases reaches the standard, the gas is discharged. However, the method cannot effectively monitor the pyrolysis carbonization process, and cannot effectively ensure the environmental safety when the gas emission does not reach the standard.
Therefore, there is a need for a method for pyrolysis carbonization of food residues, which can finely manage the pyrolysis process, effectively reduce the emission of substandard gases, and further ensure the safe production.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a safety monitoring method of a food residue pyrolysis carbonization pond, which is characterized in that harmful gas concentration, oxygen concentration and temperature parameters in the carbonization pond and each gas discharge pipeline are collected in real time, data are analyzed in real time through a central control platform, historical data analysis is carried out under the condition that the data can normally work after the real-time analysis, the food residue pyrolysis process is finely managed through transverse comparison of curve values, corresponding treatment is carried out when the parameters do not accord with the preset range, the discharge of substandard gas is reduced, and after each instruction is suggested, the method can be executed by a manual confirmation party so as to ensure the safety production.
The invention provides a safety monitoring method of a food residue pyrolysis carbonization pond, which specifically comprises the following steps:
s1, arranging a plurality of harmful gas concentration detection sensors Q1= [ Q11, Q12 in a first gas discharge pipeline connected with the carbonization pond, Q1n ], a plurality of temperature sensors c1= [ C11, C12, C1n ], and a plurality of oxygen concentration sensors o1= [ O11, O12, O1 n;
s2, arranging a plurality of harmful gas concentration detection sensors Q2= [ Q21 ] on the side wall of the carbonization pond, Q22, Q2n, a plurality of temperature sensors c2= [ C21, a C22 of the total number of the components, C2n ], and a plurality of oxygen concentration sensors o2= [ O21, O22, O2 n;
wherein n is a natural number greater than 0;
s3, periodically acquiring data Q1, C1, O1, Q2, C2 and O2 from the Q1, the C1, the O2 and the O2, and transmitting the data Q1, C1, O1, Q2, C2 and O2 to a central control platform in real time;
s4, the central control platform draws change curves of the data q1, c1, o1, q2, c2 and o2 based on the data receiving moment;
s5, the central control platform monitors the pyrolysis process of the food residues based on the change curve, and a monitoring result is obtained;
s6, if the monitoring result shows that the gas emission does not reach the standard, opening a valve of the waste gas treatment tank, and closing a natural exhaust valve to guide the gas of the first gas emission pipeline into the waste gas treatment tank;
the waste gas treatment tank is also connected with a second gas discharge pipeline besides the first gas discharge pipeline, so as to discharge the gas treated by the waste gas treatment tank into the environment;
s7, a plurality of harmful gas concentration detection sensors Q3= [ Q31 ] are arranged in the second gas discharge pipeline, Q32, Q3n, and a plurality of oxygen concentration sensors O3= [ O31, O32. O3n ].
Further, s8, periodically transmitting the data Q3 corresponding to the Q3 and the data O3 corresponding to the O3 to the central control platform.
Further, S9, the central control platform analyzes the q3 and the o3 to confirm whether the gas in the second gas discharge pipeline reaches the discharge standard.
Further, S10, if the gas in the second gas discharge pipeline reaches the discharge standard, the gas is directly discharged.
Further, S101, if the gas in the second gas discharge pipeline does not reach the discharge standard, notifying the central control platform to manually detect food residues subjected to the pyrolysis treatment, and overhauling pyrolysis carbonization equipment.
Further, S11, Q1, C1 and O1 are all evenly distributed in the first gas discharge pipeline along the gas discharge direction.
Further, s12, the harmful gas includes: sulfur-containing compounds and nitrogen-containing compounds are produced during carbonization of food residues.
Further, S21, Q2, C2 and O2 are uniformly arranged on the inner side wall of the carbonization tank.
Further, s31, q1= [ q11, q12, q1 n;
the c1= [ c11, c12, c1 n;
the described o1= [ o11, o12, o1 n;
the q2= [ q21, q22, q2 n;
the c2= [ c21, c22, c2 n;
the above-mentioned o2= [ o21, o22, o2 n.
The invention also provides a safety monitoring system of the food residue pyrolysis carbonization tank, wherein a memory is arranged in the safety monitoring system of the food residue pyrolysis carbonization tank and used for storing instruction codes;
and the processor calls the instruction codes to execute the safety monitoring method of the food residue pyrolysis carbonization pond.
The invention has the advantages that:
1. according to the invention, through collecting harmful gas concentration, oxygen concentration and temperature parameters in the carbonization pond and each gas discharge pipeline in real time, analyzing the data in real time through the central control platform, analyzing historical data under the condition that the data can normally work after real-time analysis, finely managing the pyrolysis process of food residues through transverse comparison of curve values, and carrying out corresponding treatment when the parameters do not accord with preset ranges, the emission of substandard gas is reduced, and after each instruction is given out advice, the method can be executed by a manual confirmation party so as to ensure safe production.
2. Through the arrangement of the steps S41-S45, the carbonization pond and the gas discharge pipeline can be monitored in real time respectively, prompt information is given out respectively after analysis is carried out based on respective real-time monitoring data, final prompt information is given out after comprehensive consideration of the prompt information and parameter information of the two parts, and a suggestion control instruction is given out based on the final prompt information, so that the process can carry out fine management on the pyrolysis process of food residues. After the proposal control instruction is given, the control instruction can be sent after the proposal control instruction is confirmed manually, so that the safe production can be ensured, and the safe operation of production and life can be effectively improved by means of combining a manual mode with a computer intelligent algorithm. Meanwhile, through different control instructions, the generation speed of the harmful gas is effectively controlled in time, and the emission of the harmful gas is reduced.
3. In the steps S51-S53, the operation condition of the system can be macroscopically monitored on the basis of healthy production operation, and the temperature information can be monitored under the condition that harmful gas does not influence normal working conditions, and early warning can be carried out on the integral temperature rise of the system through macroscopically monitoring the temperature information, so that the temperature condition can be conveniently known in advance, and safety accidents caused by overhigh temperature are effectively avoided. Meanwhile, for macro analysis of the concentration of harmful gases, the effectiveness of real-time monitoring information can be further ensured, and further refined management is realized.
4. Through the arrangement of the steps S6-S10, the discharged gas can be further treated in time when the content of the harmful gas is high, and the discharge amount of the harmful gas is reduced. Meanwhile, when the exhaust gas is not required to be further treated, the use frequency of the waste gas treatment tank is saved, and the maintenance cost is effectively reduced.
Drawings
FIG. 1 is a flow chart of the steps of a method for safety monitoring of a food waste pyrolysis carbonization pond;
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, the method performs the steps of:
s1, arranging a plurality of harmful gas concentration detection sensors Q1= [ Q11, Q12 in a first gas discharge pipeline connected with the carbonization pond, Q1n ], a plurality of temperature sensors c1= [ C11, C12, C1n ], and a plurality of oxygen concentration sensors o1= [011, O12, O1 n;
s2, arranging a plurality of harmful gas concentration detection sensors Q2= [ Q21 ] on the side wall of the carbonization pond, Q22, Q2n, a plurality of temperature sensors c2= [ C21, a C22 of the total number of the components, C2n ], and a plurality of oxygen concentration sensors o2= [ O21, O22, O2 n;
wherein n is a natural number greater than 0;
s3, periodically acquiring data Q1, C1, O1, Q2, C2 and O2 from the Q1, the C1, the O2 and the O2, and transmitting the data Q1, C1, O1, Q2, C2 and O2 to a central control platform in real time;
s4, the central control platform draws change curves of the data q1, c1, o1, q2, c2 and o2 based on the data receiving moment;
s41, calculating q1 in real time in the process of describing the change curves of the data q1, c1, o1, q2, c2 and o2 a And o1 a Based on the ratio A1 of the number of the pieces of the prompting information AT1;
s411, if the ratio A1 is B which is less than or equal to A1 which is less than or equal to C, continuously monitoring; the B is the minimum value of a first preset range, and the C is the maximum value of the first preset range;
s412, if the ratio A1 is smaller than B, the central control platform sends an alarm G1 to prompt that the food residues are not fully contacted with oxygen; displaying the specific value of the ratio on the central control platform;
s413, if the A1 is more than C, the central control platform sends an alarm G2 to prompt that the food residues are not fully pyrolyzed and the oxygen is insufficient, and the specific numerical value of the ratio is displayed on the central control platform;
s42, calculating q2 in real time in the process of describing the change curves of the data q1, c1, o1, q2, c2 and o2 a And o2 a And gives a prompt message AT2 based on the ratio A2 of the above;
s421, if the ratio A2 is B which is less than or equal to A1 which is less than or equal to C, continuously monitoring;
s422, if the ratio A2 is smaller than B, the central control platform sends out an alarm G1 to prompt that the food residues are not fully contacted with oxygen; displaying the specific value of the ratio on the central control platform;
s423, if the A2 is more than C, the central control platform sends an alarm G2 to prompt that the food residues are not fully pyrolyzed and the oxygen is insufficient, and the specific numerical value of the ratio is displayed on the central control platform;
s43, if the AT1 and the AT2 are both the G1, the central control platform pre-transmits a control instruction Z1 for improving stirring power to the carbonization pool control device, the pre-transmitted control instruction Z1 is displayed on the central control platform, and after confirmation by a manager, the pre-transmitted control instruction Z1 is transmitted to the carbonization pool control device;
if the AT1 and the AT2 are both G2, the central control platform pre-sends a control instruction Z2 for improving the air conveying power to the carbonization pool control device, the pre-sent control instruction Z2 is displayed on the central control platform, and after confirmation by a manager, the pre-sent control instruction Z2 is sent to the carbonization pool control device;
s44, if the AT1 information is different from the AT2 information, notifying an maintainer to check the field working condition;
s45, monitoring the current values of the c1 and the c2 in real time, if the current values of the c1 and the c2 are larger than a fifth judgment threshold, sending out an alarm in real time, prompting a manager to be abnormal in temperature, positioning a sensor with abnormal temperature, and displaying sensor information of abnormal temperature in the central control platform screen.
S5, the central control platform monitors the pyrolysis process of the food residues based on the change curve, and a monitoring result is obtained;
s51, the q1 curves are n, if any two adjacent curves qx in the n q1 curves are m Qx m+1 The trend is the same with time, only the time of trend change is different,s52 is performed; m is more than or equal to 1 and less than or equal to n-1, and m is a natural number;
s511, obtaining the qx m Qx m+1 Taking absolute values after the difference of the inflection point values to obtain a first judgment value, and executing S512 if the first judgment value is smaller than a first threshold value;
s512, obtaining qx m Qx m+1 Taking absolute values after the difference of the maximum values to obtain a second judgment value, and if the second judgment value is smaller than a second threshold value; s513 is performed;
s513, obtaining qx m Qx m+1 Taking absolute values after difference of the respective minimum values to obtain a third judgment value, and judging the curve qx if the third judgment value is smaller than a third threshold value m Qx m+1 The trend is the same with time.
S52, monitoring the change conditions of the c1 and the c2 curves at any moment, if any numerical value of any curve is larger than a fourth judgment threshold, sending out a temperature abnormality alarm by the central control platform, positioning a temperature abnormality moment and a temperature abnormality sensor based on the curve where the numerical value corresponding to the value larger than the fourth judgment threshold is located, and displaying the temperature abnormality moment and the temperature abnormality sensor on the central control platform;
wherein the fourth decision threshold is less than the fifth decision threshold.
S53, if the curve qx m Qx m+1 And displaying the data curves with different change trends on the central control platform and sending safety prompt information to the management terminal when the change trends are different along with time.
S6, if the monitoring result shows that the gas emission does not reach the standard, opening a valve of the waste gas treatment tank, and closing a natural exhaust valve to guide the gas of the first gas emission pipeline into the waste gas treatment tank;
the waste gas treatment tank is also connected with a second gas discharge pipeline besides the first gas discharge pipeline, so as to discharge the gas treated by the waste gas treatment tank into the environment;
s7, a plurality of harmful gas concentration detection sensors Q3= [ Q31 ] are arranged in the second gas discharge pipeline, Q32, Q3n, and a plurality of oxygen concentration sensors O3= [ O31, O32. O3n ].
Further, s8, periodically transmitting the data Q3 corresponding to the Q3 and the data O3 corresponding to the O3 to the central control platform.
Further, S9, the central control platform analyzes the q3 and the o3 to confirm whether the gas in the second gas discharge pipeline reaches the discharge standard.
S91, monitoring the q3 and the o3 in real time, and when the q3 and the o3 values in p continuous periods are in a reasonable range, determining whether the gas in the second gas discharge pipeline reaches the discharge standard, wherein p is a natural number greater than 5.
Further, S10, if the gas in the second gas discharge pipeline reaches the discharge standard, the gas is directly discharged.
Further, S101, if the gas in the second gas discharge pipeline does not reach the discharge standard, notifying the central control platform to manually detect food residues subjected to the pyrolysis treatment, and overhauling pyrolysis carbonization equipment.
Further, S11, Q1, C1 and O1 are all evenly distributed in the first gas discharge pipeline along the gas discharge direction.
Further, s12, the harmful gas includes: sulfur-containing compounds and nitrogen-containing compounds are produced during carbonization of food residues.
Further, S21, Q2, C2 and O2 are uniformly arranged on the inner side wall of the carbonization tank.
Further, s31, q1= [ q11, q12, q1 n;
the c1= [ c11, c12, c1 n;
the described o1= [ o11, o12, o1 n;
the q2= [ q21, q22, q2 n;
the c2= [ c21, c22, c2 n;
the above-mentioned o2= [ o21, o22, o2 n.
The invention also provides a safety monitoring system of the food residue pyrolysis carbonization tank, wherein a memory is arranged in the safety monitoring system of the food residue pyrolysis carbonization tank and used for storing instruction codes;
and the processor calls the instruction codes to execute the safety monitoring method of the food residue pyrolysis carbonization pond.
The invention has the advantages that:
1. according to the invention, through collecting harmful gas concentration, oxygen concentration and temperature parameters in the carbonization pond and each gas discharge pipeline in real time, analyzing the data in real time through the central control platform, analyzing historical data under the condition that the data can normally work after real-time analysis, finely managing the pyrolysis process of food residues through transverse comparison of curve values, and carrying out corresponding treatment when the parameters do not accord with preset ranges, the emission of substandard gas is reduced, and after each instruction is given out advice, the method can be executed by a manual confirmation party so as to ensure safe production.
2. Through the arrangement of the steps S41-S45, the carbonization pond and the gas discharge pipeline can be monitored in real time respectively, prompt information is given out respectively after analysis is carried out based on respective real-time monitoring data, final prompt information is given out after comprehensive consideration of the prompt information and parameter information of the two parts, and a suggestion control instruction is given out based on the final prompt information, so that the process can carry out fine management on the pyrolysis process of food residues. After the proposal control instruction is given, the control instruction can be sent after the proposal control instruction is confirmed manually, so that the safe production can be ensured, and the safe operation of production and life can be effectively improved by means of combining a manual mode with a computer intelligent algorithm. Meanwhile, through different control instructions, the generation speed of the harmful gas is effectively controlled in time, and the emission of the harmful gas is reduced.
3. In the steps S51-S53, the operation condition of the system can be macroscopically monitored on the basis of healthy production operation, and the temperature information can be monitored under the condition that harmful gas does not influence normal working conditions, and early warning can be carried out on the integral temperature rise of the system through macroscopically monitoring the temperature information, so that the temperature condition can be conveniently known in advance, and safety accidents caused by overhigh temperature are effectively avoided. Meanwhile, for macro analysis of the concentration of harmful gases, the effectiveness of real-time monitoring information can be further ensured, and further refined management is realized.
4. Through the arrangement of the steps S6-S10, the discharged gas can be further treated in time when the content of the harmful gas is high, and the discharge amount of the harmful gas is reduced. Meanwhile, when the exhaust gas is not required to be further treated, the use frequency of the waste gas treatment tank is saved, and the maintenance cost is effectively reduced.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (10)

1. A safety monitoring method of a food residue pyrolysis carbonization pond is characterized by comprising the following steps of:
s1, arranging a plurality of harmful gas concentration detection sensors Q1= [ Q11, Q12 in a first gas discharge pipeline connected with the carbonization pond, Q1n ], a plurality of temperature sensors c1= [ C11, C12, C1n ], and a plurality of oxygen concentration sensors o1= [ O11, O12, O1 n;
s2, arranging a plurality of harmful gas concentration detection sensors Q2= [ Q21 ] on the side wall of the carbonization pond, Q22, Q2n, a plurality of temperature sensors c2= [ C21, a C22 of the total number of the components, C2n ], and a plurality of oxygen concentration sensors o2= [ O21, O22, O2 n;
wherein n is a natural number greater than 0;
s3, periodically acquiring data Q1, C1, O1, Q2, C2 and O2 from the Q1, the C1, the O2 and the O2, and transmitting the data Q1, C1, O1, Q2, C2 and O2 to a central control platform in real time;
s4, the central control platform draws change curves of the data q1, c1, o1, q2, c2 and o2 based on the data receiving moment;
s5, the central control platform monitors the pyrolysis process of the food residues based on the change curve, and a monitoring result is obtained;
s6, if the monitoring result shows that the gas emission does not reach the standard, opening a valve of the waste gas treatment tank, and closing a natural exhaust valve to guide the gas of the first gas emission pipeline into the waste gas treatment tank;
the waste gas treatment tank is also connected with a second gas discharge pipeline besides the first gas discharge pipeline, so as to discharge the gas treated by the waste gas treatment tank into the environment;
s7, a plurality of harmful gas concentration detection sensors Q3= [ Q31 ] are arranged in the second gas discharge pipeline, Q32, Q3n, and a plurality of oxygen concentration sensors O3= [ O31, O32. O3n ].
2. The safety monitoring method of a food waste pyrolysis carbonization pond according to claim 1, wherein:
s8, periodically transmitting the data Q3 corresponding to the Q3 and the data O3 corresponding to the O3 to the central control platform.
3. The safety monitoring method of a food waste pyrolysis carbonization pond according to claim 2, wherein:
s9, the central control platform analyzes the q3 and the o3 to confirm whether the gas in the second gas discharge pipeline reaches the discharge standard.
4. A method of safety monitoring a food waste pyrolysis carbonization cell in accordance with claim 3, wherein:
s10, if the gas in the second gas discharge pipeline reaches the discharge standard, directly discharging.
5. The method for monitoring the safety of a pyrolysis carbonization cell for food wastes according to claim 4, wherein:
s101, if the gas in the second gas discharge pipeline does not reach the discharge standard, informing the central control platform to manually detect food residues subjected to the pyrolysis treatment, and overhauling pyrolysis carbonization equipment.
6. The safety monitoring method of a food waste pyrolysis carbonization pond according to claim 1, wherein:
s11, uniformly distributing the Q1, the C1 and the O1 in the first gas discharge pipeline along the gas discharge direction.
7. The safety monitoring method of a food waste pyrolysis carbonization pond according to claim 6, wherein:
s12, the harmful gas comprises: sulfur-containing compounds and nitrogen-containing compounds are produced during carbonization of food residues.
8. The safety monitoring method of a food waste pyrolysis carbonization pond according to claim 7, wherein:
s21, uniformly arranging the Q2, the C2 and the O2 on the inner side wall of the carbonization pond.
9. The safety monitoring method of a food waste pyrolysis carbonization pond according to claim 8, wherein:
s31. said q1= [ q11, q12, q1 n;
the c1= [ c11, c12, c1 n;
the described o1= [ o11, o12, o1 n;
the q2= [ q21, q22, q2 n;
the c2= [ c21, c22, c2 n;
the above-mentioned o2= [ o21, o22, o2 n.
10. Safety monitoring system in food residue pyrolysis carbonization pond, its characterized in that: the safety monitoring system of the food residue pyrolysis carbonization pool is provided with a memory for storing instruction codes;
a processor invoking said instruction code to perform a method of safety monitoring of a food waste pyrolytic carbonization cell in accordance with any of claims 1-9.
CN202410022424.1A 2024-01-08 2024-01-08 Safety monitoring method for food residue pyrolysis carbonization pool Active CN117821089B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060230749A1 (en) * 2004-06-10 2006-10-19 Toyota Jidosha Kabushiki Kaisha Exhaust gas control apparatus for internal combustion engine
US20120289790A1 (en) * 2011-05-13 2012-11-15 Fujitsu Limited Continuous Monitoring of Stress Using Self-Reported Psychological or Behavioral Data
CN102974213A (en) * 2012-11-28 2013-03-20 沈阳航空航天大学 Fully-automatic biogas interior micro-oxygen desulfurization device
CN104183183A (en) * 2014-07-24 2014-12-03 郑州轻工业学院 Sludge aerobic-fermentation experiment simulated system with automatic control

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060230749A1 (en) * 2004-06-10 2006-10-19 Toyota Jidosha Kabushiki Kaisha Exhaust gas control apparatus for internal combustion engine
US20120289790A1 (en) * 2011-05-13 2012-11-15 Fujitsu Limited Continuous Monitoring of Stress Using Self-Reported Psychological or Behavioral Data
CN102974213A (en) * 2012-11-28 2013-03-20 沈阳航空航天大学 Fully-automatic biogas interior micro-oxygen desulfurization device
CN104183183A (en) * 2014-07-24 2014-12-03 郑州轻工业学院 Sludge aerobic-fermentation experiment simulated system with automatic control

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