CN111888884A - Activated carbon saturation detection method, activated carbon filtering device and using method - Google Patents
Activated carbon saturation detection method, activated carbon filtering device and using method Download PDFInfo
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Abstract
The invention discloses an activated carbon saturation detection method, S1, detecting TVOC concentration Ci at an air inlet and TVOC concentration Co at an air outlet of an activated carbon box in a current sampling period; s2, calculating the current sampling period TsAir volume V multiplied by S multiplied by T of internal passing activated carbon boxs(ii) a S3, continuously accumulating and calculating the product of the difference value (Co-Ci) and the air volume to obtain the quality Qa of the TVOC adsorbed by the activated carbon in the activated carbon box; and S4, calculating to obtain the activated carbon saturation Sc-Qa/Qs. Therefore, the activated carbon saturation detection method disclosed by the invention realizes the on-line real-time calculation of the activated carbon saturation, greatly improves the calculation precision of the activated carbon saturation, ensures that the activated carbon box is not used excessively, accurately masters the desorption time and reduces the operation cost of equipment. The invention also discloses an active carbon filtering device and a filter medium thereofThe method is used.
Description
Technical Field
The invention relates to the field of environmental protection, in particular to an activated carbon saturation detection method, an activated carbon filtering device and a using method.
Background
In the industrial production process, a lot of waste gas containing harmful substances is generated, air pollution is caused when the waste gas is directly discharged, and the waste gas needs to be treated and then discharged in order to ensure that the ecological environment is not polluted.
For example, the main component of the waste gas generated in the paint spray booth is Volatile Organic Compounds (VOCs), and the main treatment method is to use activated carbon to adsorb the VOCs, and then perform desorption and catalytic combustion to convert the VOCs into harmless carbon dioxide and water, thereby realizing harmless treatment of the waste gas. The activated carbon can not continuously adsorb VOCs, and the activated carbon can reach a saturated state after adsorbing VOCs to a certain degree and lose the capability of further adsorbing VOCs, so that the correct judgment of the current saturation of the activated carbon is the key point for guiding and ensuring the normal operation of the waste gas treatment device, if the activated carbon is saturated and then is continuously used, the service life of the activated carbon is shortened, and the waste gas emission does not reach the standard; if the activated carbon is not saturated and desorption is carried out in advance, energy waste can be caused.
The current mainstream method still depends on daily experience more, measures for multiple times in the initial stage of commissioning according to the actual situation of the site, judges the approximate service time of the activated carbon under the standard working condition, and then roughly judges whether the activated carbon is saturated according to the actual working time, if the spraying and baking paint house generally judges whether the activated carbon is saturated according to the number of spraying paint workpieces or the spraying paint working time, the deviation is larger.
The saturation degree of active carbon can not be judged accurately to the volume of harmful substance that contains in the waste gas before and after the direct contrast active carbon adsorption, because like the workplace such as spray booth, work is discontinuous, sometimes there is the operation of spraying paint, sometimes not, so the content fluctuation of harmful substance in the waste gas of emission is very big, and this fluctuation that can lead to the difference of harmful substance content in the waste gas before and after filtering is also very big, so be difficult to judge the state of active carbon by simply comparing the height of harmful substance content in the waste gas before and after filtering.
The other method is to weigh the activated carbon, and judge the actual harmful substance adsorption amount of the activated carbon through the weight change, which is the most accurate, but the actual operation is time-consuming and labor-consuming, and the loss is large, because the activated carbon is fragile, a lot of damages can be generated to cause loss each time the activated carbon is assembled and disassembled, and simultaneously, under the working state, due to the existence of wind in a pipeline, a lot of interference factors exist in the weight measurement, the online detection is difficult, in addition, 1 ton of activated carbon can be loaded in an activated carbon filter box of a large-scale factory, so the operation workload is large each time, and after the activated carbon adsorbs the harmful substances, the activated carbon belongs to pollutants before the desorption treatment, and the environment pollution can be caused by the disassembly, weighing and the like.
Aiming at the problems, the invention provides a method for accurately detecting the saturation of the activated carbon on line.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a method for detecting the saturation of the activated carbon.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an activated carbon saturation detection method comprises the following steps:
s1, detecting the concentration Ci of the TVOC (Total Volatile organic compound) at the air inlet of the activated carbon box and the concentration Co of the TVOC at the air outlet in the current sampling period;
s2, detecting the wind speed V at the air outlet of the activated carbon box in the current sampling period, and calculating the sampling period T by combining the sectional area S of the air outletsAir volume V multiplied by S multiplied by T of internal passing activated carbon boxs；
S3, continuously and accumulatively calculating the product of the difference Co-Ci and the air volume, and calculating to obtain the mass Qa of the TVOC adsorbed by the activated carbon in the activated carbon box;
s4, calculating to obtain activated carbon saturation Sc:
in the above formula, Qs is the critical mass of the activated carbon at the time of saturated adsorption of TVOC, Qs ═ Mc × Ks, Mc is the mass of the activated carbon loaded in the activated carbon box, and Ks is the TVOC adsorption coefficient of the activated carbon.
The sequence of the steps S1 and S2 is adjustable;
compared with the prior art, the invention has the following technical effects:
can calculate in real time on line, and the cycle of integral calculation can shorten to the response time of sensor, has promoted the computational accuracy to the active carbon saturation by a wide margin, provides accurate saturation data for the operation of active carbon case, ensures that the active carbon case is not used excessively, and the time of carrying out the desorption is mastered to the accuracy, is guaranteeing that the filter is effectively under the prerequisite up to standard, reduces the running cost of equipment.
On the basis of the technical scheme, the invention can be further improved as follows.
Preferably, in step S3, the Qa calculation formula is as follows:
in the above formula, the first and second carbon atoms are,
qa is the mass of TVOC adsorbed by activated carbon, and the unit is Kg;
Vnthe unit is m/s of the wind speed of the air outlet of the activated carbon box during the nth sampling;
s is the sectional area of the air pipe at the air outlet of the activated carbon box and the unit is m2；
CinThe TVOC concentration at the air inlet of the activated carbon box during the nth sampling is in mg/m3；
ConThe TVOC concentration at the air outlet of the activated carbon box during the nth sampling is in mg/m3；
K is the accumulated sampling times in the current adsorption period;
Tsis the sampling period, and has the unit of s.
Preferably, the TVOC concentration Ci at the air inlet of the activated carbon box and the TVOC concentration Co at the air outlet are detected by a PID sensor.
An activated carbon filtering device comprises a control module, a prefilter, an activated carbon box and an adsorption fan which are sequentially connected together through an air pipe;
an inlet PID sensor is installed in an air pipe between the prefilter and the activated carbon box, an outlet PID sensor and an air speed sensor are installed in an air pipe between the adsorption fan and the activated carbon box, the inlet PID sensor, the outlet PID sensor and the air speed sensor are all electrically connected with a control module, the control module is used for calculating activated carbon saturation Sc in the activated carbon box according to the activated carbon saturation detection method, and when the Sc is larger than or equal to 90%, the control module sends out activated carbon saturated information to the outside.
Preferably, the device also comprises a desorption fan and a catalytic combustion furnace which are connected together through an air pipe;
an adsorption inlet valve is arranged in an air pipe between the prefilter and the activated carbon box, and an adsorption outlet valve is arranged in an air pipe between the adsorption fan and the activated carbon box;
an air inlet of the desorption fan is connected with the activated carbon box through a desorption outlet valve, an air outlet of the desorption fan is connected with an air inlet of the catalytic combustion furnace, and an air outlet of the catalytic combustion furnace is connected with the activated carbon box through a desorption inlet valve;
the adsorption inlet valve, the adsorption outlet valve, the desorption inlet valve, the desorption outlet valve and the catalytic combustion furnace are all electrically connected with a control module, and the control module is used for controlling the valves and the catalytic combustion furnace according to the numerical value of the activated carbon saturation Sc.
Preferably, a flame arrester is further arranged in an air pipe between the desorption fan and the catalytic combustion furnace.
Preferably, an air pipe between the catalytic combustion furnace and the activated carbon box is sequentially provided with a cold compensation valve and a discharge valve along the airflow direction, the cold compensation valve and the discharge valve are respectively connected to the air pipe through a tee joint, the other end of the cold compensation valve is connected with a cold compensation fan through the air pipe, and the other end of the discharge valve is vented.
Adopt above-mentioned further scheme's beneficial effect to supply cold earlier and discharge again, has carried out certain degree dilution to waste gas in other words, ensures that the waste gas that discharges to the atmosphere is up to standard, and supply cold earlier discharges again, also can ensure that the pressure at pipeline rear is unlikely to too high, ensures equipment safety.
Preferably, a heat exchange chamber, an auxiliary heating chamber and a catalytic combustion chamber are arranged in the catalytic combustion furnace, a heat exchanger is arranged in the heat exchange chamber, an auxiliary heater and a third temperature sensor are arranged in the auxiliary heating chamber, and a catalytic heater and a second temperature sensor are arranged in the catalytic combustion chamber.
Compared with the prior art, the invention has the following beneficial effects:
this equipment can on-line real-time computation activated carbon's saturation, and the cycle of calculation can shorten to the response time of sensor, has promoted the computational accuracy to activated carbon saturation by a wide margin, provides accurate saturation data for activated carbon box's operation, ensures that activated carbon box is not used excessively, and the time of carrying out the desorption is mastered to the accuracy, is guaranteeing that the filter is effectively under the prerequisite up to standard, reduces the running cost of equipment.
A method for using an activated carbon filter device;
SS1, starting equipment;
SS2, entering an adsorption working state:
SS3, monitoring the activated carbon saturation Sc in real time according to the method until the Sc reaches a set saturation threshold, sending activated carbon saturation information and prompting that desorption treatment is needed;
SS4, manually confirming and switching the equipment to a desorption working state;
SS5, after the desorption is finished, the operation returns to the step SS2 to switch back to the adsorption working state.
Compared with the prior art, the invention has the following beneficial effects:
the saturation degree of the activated carbon is accurately mastered, the utilization rate of the activated carbon is greatly improved, and extra energy waste caused by unsaturated desorption in advance is avoided.
Drawings
FIG. 1 is a flow chart of the activated carbon saturation detection method of the present invention;
FIG. 2 is a schematic view of the structure of the activated carbon filter device of the present invention;
FIG. 3 is a functional block diagram of a control module in the activated carbon filtration apparatus of the present invention;
in the drawings, part of the reference numerals indicate the following list of part names:
1. a pre-filter; 2. an activated carbon box; 3. an adsorption fan; 4-1, an inlet PID sensor; 4-2, an outlet PID sensor; 4-3, a wind speed sensor; 5. a desorption fan; 6. a catalytic combustion furnace; 7. a flame arrestor; 8. supplementing a cold air blower; 9. and a control module.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
The activated carbon TVOC adsorption coefficient Ks is used to express the ability of activated carbon to adsorb TVOC, and is generally weight percent, and Ks is generally about 20%, namely 100kg of activated carbon can adsorb 20kg of TVOC at most. Therefore, the critical mass when the TVOC is adsorbed by a fixed amount of activated carbon in actual production, namely the critical mass of TVOC adsorbed by the activated carbon box in saturation, Qs is Mc multiplied by Ks, wherein Qs is Kg, Mc is the total mass of the activated carbon box filled with the activated carbon, and the unit is Kg.
Referring to fig. 1-3 of the drawings,
an active carbon filtering device comprises a control module 9, and a prefilter 1, an active carbon box 2 and an adsorption fan 3 which are sequentially connected together through air pipes; the pre-filter 1 is used for primary filtering of paint mist and the like, and the activated carbon box 2 is filled with activated carbon and is provided with a first temperature sensor T1 therein.
An inlet PID sensor 4-1 and an adsorption inlet valve Va1 are installed in an air pipe between the pre-filter 1 and the activated carbon box 2, an adsorption outlet valve Va2, an outlet PID sensor 4-2 and an air speed sensor 4-3 are installed in an air pipe between the adsorption fan 3 and the activated carbon box, and the catalytic combustion furnace 6 and the desorption fan 5 are connected together through the air pipe; an air inlet of the desorption fan 5 is connected with the activated carbon box 2 through a desorption outlet valve Vd2, an air outlet of the desorption fan 5 is connected with an air inlet of the catalytic combustion furnace 6 through a flame arrester 7, and an air outlet of the catalytic combustion furnace 6 is connected with the activated carbon box 2 through a desorption inlet valve Vd 1;
a heat exchange chamber, an auxiliary heating chamber and a catalytic combustion chamber are arranged in the catalytic combustion furnace 6, a heat exchanger 6-1 is arranged in the heat exchange chamber, an auxiliary heater 6-2 is arranged in the auxiliary heating chamber, a catalytic heater 6-3 is arranged in the catalytic combustion chamber, gas firstly enters from an inlet of the heat exchange chamber, enters the auxiliary heating chamber for auxiliary heating after heat exchange of the heat exchanger, then enters the catalytic combustion chamber for heating and catalytic combustion, and finally is discharged out of the catalytic combustion furnace 6; an auxiliary heater 6-3 and a third temperature sensor T3 are arranged in the auxiliary heating chamber, and a catalytic heater and a second temperature sensor T2 are arranged in the catalytic combustion chamber.
The adsorption inlet valve Va1, the inlet PID sensor 4-1, the outlet PID sensor 4-2, the adsorption outlet valve Va2, the wind speed sensor 4-3, the desorption inlet valve Vd1, the desorption outlet valve Vd2 and the catalytic combustion furnace 6 are all electrically connected with a control module 9, and the control module 9 comprises a PLC CPU, and a desorption valve control module, a desorption fan control module, an exhaust/cooling supplement valve control module, a cooling supplement fan control module, a PID detection module 1, a PID detection module 2, an adsorption valve control module, an adsorption fan control module, an HMI (human machine interface), an EM AI module, an auxiliary heating control module and a catalytic heating control module which are electrically connected with the PLC CPU. The control module 9 is configured to calculate an activated carbon saturation Sc according to information of each sensor, and control each valve and the catalytic combustion furnace 6 according to a value of the activated carbon saturation Sc, specifically:
when the device is operating in the adsorption state:
the device works in an adsorption mode by operating on an HMI touch screen, the HMI and the PLC CPU communicate through the Ethernet, the PLCCPU opens an adsorption inlet valve Va1 and an adsorption outlet valve Va2 through an adsorption valve control module, the adsorption fan 3 is opened through an adsorption fan control module, VOCs waste gas of a spray-baking paint room enters an activated carbon box 2 after passing through a prefilter 1 and an adsorption inlet valve Va1, and is exhausted to the atmosphere after passing through an adsorption outlet valve Va2, the adsorption fan 3 and an exhaust pipe after being adsorbed by activated carbon.
An inlet PID sensor 4-1 is arranged in front of an inlet of the activated carbon box 2, is processed by a PID detection module 1, is communicated with a PLC CPU through RS485, and is uploaded to an inlet TVOC concentration Ci; an outlet PID sensor 4-2 is arranged at the back of the outlet of the activated carbon box 2, and after being processed by the PID detection module 2, the activated carbon box communicates with the PLC CPU through RS485 to upload the outlet TVOC concentration Co; an outlet pipeline of the activated carbon box 2 is provided with an air speed sensor 4-3 which is converted into an air speed value V by an EM AI module and then uploaded to a PLC CPU.
Establishing a mathematical model of the quality Qa of the TVOC adsorbed by the activated carbon according to the concentration Ci of the inlet TVOC, the concentration Co of the outlet TVOC, the wind speed detection value V and the sectional area S of the wind pipe
Wherein:
qa is the quality of activated carbon adsorption TVOC: kg;
Vnwind speed for the nth sample: m/s;
s is the sectional area of the air pipe: m is2；
CinThe concentration of TOVC at the inlet of the activated carbon box 2 for the nth sampling: mg/m3；
ConThe concentration of TOVC at the outlet of the activated carbon box 2 sampled at the nth time is as follows: mg/m3；
K is the accumulated sampling times in the current adsorption period;
Tsis the sampling period, and has the unit of s.
According to the mass Qa of the TVOC adsorbed by the activated carbon and the critical mass Qs of the TVOC adsorbed by the activated carbon box 2 in a saturated mode, the activated carbon saturation Sc can be calculated as follows:
when the activated carbon saturation Sc is more than or equal to 90%, the system prompts that the activated carbon is close to saturation and needs to be desorbed in time.
In a desorption working mode:
the device enters a desorption working mode by operating on the HMI touch screen, the HMI and the PLC CPU communicate through the Ethernet, the PLC CPU opens a desorption inlet valve Vd1 and a desorption outlet valve Vd2 through a desorption valve control module, an adsorption inlet valve Va1 and an adsorption outlet valve Va2 are kept in a closed state, and an auxiliary heater 6-3 and a catalytic heater 6-2 in the catalytic combustion furnace 6 are opened through an auxiliary heating module and a catalytic heating module.
The air is heated in the combustion furnace, and when the auxiliary heating temperature detected by the third temperature sensor T3 rises to 100 ℃ or the catalytic heating temperature detected by the second temperature sensor T2 rises to 100 ℃, the desorption fan 5 is started through the desorption fan control module; hot air enters the activated carbon box 2 through a desorption inlet valve Vd1 to desorb saturated activated carbon, the temperature of the desorbed gas is reduced, and the gas enters the catalytic combustion furnace 6 through a desorption outlet valve Vd2, a desorption fan 5 and a flame arrester 7; the waste gas enters a catalytic combustion chamber after heat exchange and auxiliary heating through a heat exchanger 6-1, and is decomposed into water and carbon dioxide after combustion under the catalytic action of noble metal;
when the third temperature sensor T3 detects that the auxiliary heating temperature is less than 90 ℃ and the second temperature sensor T2 detects that the catalytic heating temperature is less than 90 ℃, the desorption fan 5 is turned off by the desorption fan control module;
when the first temperature sensor T1 detects that the temperature of the activated carbon box 2 rises to 100 ℃, the air supplementing fan 8 is turned on through the air supplementing fan control module, the discharge valve VL1 and the air supplementing valve VL2 are turned on through the discharge and air supplementing valve control module, and the activated carbon is cooled; when first temperature sensor T1 detected the active carbon temperature and dropped to 80 degrees, close tonifying cold fan 8 through tonifying cold fan control module, close discharge valve VL1, tonifying cold valve VL2 through emission, tonifying cold valve control module, continue to carry out the desorption of rising the temperature to the active carbon.
When the third temperature sensor T3 detects that the sub-heating temperature rises to 340 degrees, the sub-heating is turned off by the sub-heating module; when the third temperature sensor T3 detects that the assist heating temperature has dropped to 335 degrees, the assist heating is turned on again by the assist heating module.
When the second temperature sensor T2 detects that the catalytic heating temperature has risen to 330 degrees, the catalytic heating is turned off by the catalytic heating module; when the third temperature sensor T3 detects that the catalytic heating temperature has dropped to 325 degrees, the catalytic heating is turned on again by the catalytic heating module.
The desorption process is automatically carried out according to program control, and the desorption process is automatically finished after the set desorption time is up. All operations are automatically turned off.
When the concentration Co of the waste gas at the outlet of the activated carbon is more than or equal to Cs, the Cs is the critical discharge concentration of TVOC at the outlet of the activated carbon box 2 and the unit is mg/m3The system prompts to check the working state of the spraying and baking room, check whether the activated carbon is saturated or not, and timely eliminate the fault of the spraying and baking room, or replace the activated carbon or desorb the activated carbon.
Therefore, when the system normally works, the adsorption working mode is defaulted, the activated carbon saturation Sc is continuously monitored, when the Sc is larger than a set threshold value, prompt information is sent, the desorption working mode is switched to enter after manual confirmation, and the adsorption mode is switched back to work after the desorption working is finished.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. An activated carbon saturation detection method is used for measuring the saturation of activated carbon in an activated carbon box, and is characterized by comprising the following steps:
s1, detecting the TVOC concentration Ci at the air inlet and the TVOC concentration Co at the air outlet of the activated carbon box in the current sampling period;
s2, detecting the wind speed V at the air outlet of the activated carbon box in the current sampling period, and calculating the sampling period T by combining the sectional area S of the air outletsAir volume V multiplied by S multiplied by T of internal passing activated carbon boxs；
S3, continuously accumulating and calculating the product of the difference value (Co-Ci) and the air volume to obtain the quality Qa of the TVOC adsorbed by the activated carbon in the activated carbon box;
s4, calculating to obtain activated carbon saturation Sc:
in the above formula, Qs is the critical mass of the activated carbon when the activated carbon adsorbs TVOC in saturation, Qs is mxks, Mc is the mass of the activated carbon loaded in the activated carbon box, and Ks is the TVOC adsorption coefficient of the activated carbon in kg.
2. The activated carbon saturation detection method according to claim 1, wherein in step S3, Qa is calculated as follows:
in the above formula, the first and second carbon atoms are,
qa is the mass of TVOC adsorbed by activated carbon, and the unit is Kg;
Vnthe unit is m/s of the wind speed of the air outlet of the activated carbon box during the nth sampling;
s is the sectional area of the air pipe at the air outlet of the activated carbon box and the unit is m2；
CinThe TVOC concentration at the air inlet of the activated carbon box during the nth sampling is in mg/m3；
ConThe TVOC concentration at the air outlet of the activated carbon box during the nth sampling is in mg/m3；
K is the accumulated sampling times in the current adsorption period;
Tsis the sampling period, and has the unit of s.
3. The activated carbon saturation detection method according to claim 1 or 2, wherein the sequence of the steps S1 and S2 can be reversed.
4. The activated carbon saturation detection method according to claim 1 or 2, wherein a PID sensor is used to detect the TVOC concentration Ci at the inlet and the TVOC concentration Co at the outlet of the activated carbon tank.
5. An activated carbon filtering device is characterized by comprising a control module, a prefilter, an activated carbon box and an adsorption fan which are sequentially connected together through an air pipe;
an inlet PID sensor is installed in an air pipe between the prefilter and the activated carbon box, an outlet PID sensor and an air speed sensor are installed in an air pipe between the adsorption fan and the activated carbon box, the inlet PID sensor, the outlet PID sensor and the air speed sensor are all electrically connected with a control module, the control module is used for calculating activated carbon saturation Sc in the activated carbon box according to the activated carbon saturation detection method of any one of claims 1-4, and when the Sc is larger than or equal to 90%, the control module sends out activated carbon saturated information to the outside.
6. The activated carbon filter device of claim 5, further comprising a desorption fan and a catalytic combustion furnace connected together by an air duct;
an adsorption inlet valve is arranged in an air pipe between the prefilter and the activated carbon box, and an adsorption outlet valve is arranged in an air pipe between the adsorption fan and the activated carbon box;
an air inlet of the desorption fan is connected with the activated carbon box through a desorption outlet valve, an air outlet of the desorption fan is connected with an air inlet of the catalytic combustion furnace, and an air outlet of the catalytic combustion furnace is connected with the activated carbon box through a desorption inlet valve;
the adsorption inlet valve, the adsorption outlet valve, the desorption inlet valve, the desorption outlet valve and the catalytic combustion furnace are all electrically connected with the control module, and the control module is used for controlling the valves and the catalytic combustion furnace according to the numerical value of the activated carbon saturation Sc.
7. The activated carbon filter device of claim 6, wherein a flame arrester is further arranged in the air duct between the desorption fan and the catalytic combustion furnace.
8. The activated carbon filtering device according to claim 6 or 7, wherein an air duct between the catalytic combustion furnace and the activated carbon box is sequentially provided with a cold compensation valve and a discharge valve along an air flow direction, the cold compensation valve and the discharge valve are respectively connected to the air duct through a tee joint, the other end of the cold compensation valve is connected with a cold compensation fan through the air duct, and the other end of the discharge valve is vented.
9. The activated carbon filter device of claim 8, wherein the catalytic combustion furnace is provided with a heat exchange chamber, an auxiliary heating chamber and a catalytic combustion chamber, the auxiliary heating chamber is provided with an auxiliary heater and a third temperature sensor, and the catalytic combustion chamber is provided with a catalytic heater and a second temperature sensor.
10. A method for using an activated carbon filter device, wherein the activated carbon filter device of any one of claims 5 to 9 is used, comprising the steps of:
SS1, starting equipment;
SS2, entering an adsorption working state:
SS3, monitoring the activated carbon saturation Sc in real time according to the method of claims 1-4 until Sc reaches a set saturation threshold, and issuing a desorption prompt;
SS4, manually confirming and switching to a desorption working state;
SS5, after the desorption is finished, the process returns to the step SS2 to switch back to the adsorption state.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113156906A (en) * | 2021-05-11 | 2021-07-23 | 广东顺盈环保科技有限公司 | Activated carbon saturation analysis and management method based on pollution source online monitoring |
| CN114733326A (en) * | 2022-05-09 | 2022-07-12 | 北京市科学技术研究院资源环境研究所 | Organic waste gas treatment monitoring method and device of waste gas discharge equipment |
| CN116362582A (en) * | 2023-02-01 | 2023-06-30 | 广州市中耕信息技术有限公司 | Activated carbon accumulated adsorption efficiency evaluation method and system based on integration method |
| CN116499925A (en) * | 2023-06-30 | 2023-07-28 | 苏州巨联环保有限公司 | Method for testing adsorption saturation degree of activated carbon |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3897679A (en) * | 1970-05-18 | 1975-08-05 | Scient Kit Corp Inc | Method of chemical analysis and apparatus for such analysis |
| US4149402A (en) * | 1977-12-28 | 1979-04-17 | Milton Manes | Analytical method for determining desorption isotherm and pore size distribution of an absorbent material |
| US20110036145A1 (en) * | 2009-08-14 | 2011-02-17 | Dobbyn Gregory J | Ductless fume hood gas monitoring and detection system |
| CN105605593A (en) * | 2015-12-05 | 2016-05-25 | 重庆科蓝环保实业有限公司 | Adsorption concentration-preheating type catalytic combustion system for purifying automobiles and coating exhaust gas in related fields and purifying method thereof |
| CN207221597U (en) * | 2017-07-13 | 2018-04-13 | 湖北迈威环境工程有限公司 | A kind of VOCs adsoption catalysises burning processing system automatically controlled |
| CN109324154A (en) * | 2018-10-09 | 2019-02-12 | 广东环境保护工程职业学院 | A kind of method of quick judgement molecular sieve adsorption saturation critical state |
| CN109364599A (en) * | 2018-12-20 | 2019-02-22 | 南京鑫之鸿环保科技有限公司 | A kind of paint spray booth's catalysis burning waste gas treatment process |
| CN109472468A (en) * | 2018-10-23 | 2019-03-15 | 广东柯内特环境科技有限公司 | For the pollutant discharge of enterprise intelligent monitoring data analysis system of VOC organic exhaust gas |
| CN109954369A (en) * | 2017-12-14 | 2019-07-02 | 杭州碧空环境科技有限公司 | A kind of spray painting organic exhaust gas adsorption concentration elevated temperature desorption catalytic combustion system and technique |
| CN209809866U (en) * | 2019-03-19 | 2019-12-20 | 生态环境部南京环境科学研究所 | Active carbon adsorption and desorption organic waste gas treatment device |
| CN210473480U (en) * | 2019-03-29 | 2020-05-08 | 上海复纯环保科技有限公司 | Activated carbon adsorption saturation detection device |
| CN210834551U (en) * | 2019-05-05 | 2020-06-23 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Device for testing original hydrocarbon discharge amount of automobile oil tank refueling and device for verifying adsorption capacity of activated carbon canister |
-
2020
- 2020-07-31 CN CN202010756921.6A patent/CN111888884A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3897679A (en) * | 1970-05-18 | 1975-08-05 | Scient Kit Corp Inc | Method of chemical analysis and apparatus for such analysis |
| US4149402A (en) * | 1977-12-28 | 1979-04-17 | Milton Manes | Analytical method for determining desorption isotherm and pore size distribution of an absorbent material |
| US20110036145A1 (en) * | 2009-08-14 | 2011-02-17 | Dobbyn Gregory J | Ductless fume hood gas monitoring and detection system |
| CN105605593A (en) * | 2015-12-05 | 2016-05-25 | 重庆科蓝环保实业有限公司 | Adsorption concentration-preheating type catalytic combustion system for purifying automobiles and coating exhaust gas in related fields and purifying method thereof |
| CN207221597U (en) * | 2017-07-13 | 2018-04-13 | 湖北迈威环境工程有限公司 | A kind of VOCs adsoption catalysises burning processing system automatically controlled |
| CN109954369A (en) * | 2017-12-14 | 2019-07-02 | 杭州碧空环境科技有限公司 | A kind of spray painting organic exhaust gas adsorption concentration elevated temperature desorption catalytic combustion system and technique |
| CN109324154A (en) * | 2018-10-09 | 2019-02-12 | 广东环境保护工程职业学院 | A kind of method of quick judgement molecular sieve adsorption saturation critical state |
| CN109472468A (en) * | 2018-10-23 | 2019-03-15 | 广东柯内特环境科技有限公司 | For the pollutant discharge of enterprise intelligent monitoring data analysis system of VOC organic exhaust gas |
| CN109364599A (en) * | 2018-12-20 | 2019-02-22 | 南京鑫之鸿环保科技有限公司 | A kind of paint spray booth's catalysis burning waste gas treatment process |
| CN209809866U (en) * | 2019-03-19 | 2019-12-20 | 生态环境部南京环境科学研究所 | Active carbon adsorption and desorption organic waste gas treatment device |
| CN210473480U (en) * | 2019-03-29 | 2020-05-08 | 上海复纯环保科技有限公司 | Activated carbon adsorption saturation detection device |
| CN210834551U (en) * | 2019-05-05 | 2020-06-23 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Device for testing original hydrocarbon discharge amount of automobile oil tank refueling and device for verifying adsorption capacity of activated carbon canister |
Non-Patent Citations (5)
| Title |
|---|
| 俞国柱等: "活性炭对水中微量有机污染物去除的初步探讨", 《海峡科学》 * |
| 张丽娟等: "粘胶基活性碳纤维毡吸附性能的研究", 《合成纤维工业》 * |
| 李国文等: "活性炭吸附甲苯动力学研究", 《化学工程》 * |
| 杨润昌: "废水处理中固定床吸附器的设计计算", 《石油化工》 * |
| 王海鸿等: "活性炭脱除SO2吸附动力学模型及数值模拟", 《煤炭学报》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113156906A (en) * | 2021-05-11 | 2021-07-23 | 广东顺盈环保科技有限公司 | Activated carbon saturation analysis and management method based on pollution source online monitoring |
| CN113156906B (en) * | 2021-05-11 | 2023-01-03 | 广东顺盈环保科技有限公司 | Activated carbon saturation analysis and management method based on pollution source online monitoring |
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| CN116362582A (en) * | 2023-02-01 | 2023-06-30 | 广州市中耕信息技术有限公司 | Activated carbon accumulated adsorption efficiency evaluation method and system based on integration method |
| CN116362582B (en) * | 2023-02-01 | 2024-01-05 | 中耕生态环境科技(广州)有限公司 | Activated carbon accumulated adsorption efficiency evaluation method and system based on integration method |
| CN116499925A (en) * | 2023-06-30 | 2023-07-28 | 苏州巨联环保有限公司 | Method for testing adsorption saturation degree of activated carbon |
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