CN112782368A - Test system and method for industrial organic waste gas collection efficiency evaluation - Google Patents
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Abstract
The invention relates to the technical field of test gas treatment, in particular to a test system and a test method for evaluating the collection efficiency of industrial organic waste gas, which are arranged in a production workshop and comprise a gas storage device, a gas collection device, a detection device, a treatment device, an exhaust device and a treatment device. The test system for evaluating the collection efficiency of the industrial organic waste gas can simulate the diffusion condition of the industrial organic waste gas in an actual working state, and can solve the problem that the efficiency of the waste gas collection system cannot be quantitatively evaluated by calculating the collection efficiency of the test system of the test gas through the test gas in the test system and the processing device. In addition, the testing system can display the parameters of the testing gas in real time through the display unit, and has the advantages of simple and convenient operation.
Description
Technical Field
The invention relates to the technical field of test gas treatment, in particular to a test system and a test method for evaluating the collection efficiency of industrial organic waste gas.
Background
In recent years, with the rapid development of economy in China, the emission of waste gas caused by industrial sources is continuously increased, and great pressure is brought to the improvement of air quality of urban area in China, so that governments of China and all levels clearly propose to strengthen the control of waste gas pollution of industrial sources.
Industrial organic waste gas is a generic term for various pollutant-containing gases discharged into the air during the fuel combustion and production processes in the factory area of an enterprise, and the waste gas mainly comprises: volatile organic compounds, carbon dioxide, carbon disulfide, hydrogen sulfide, fluorides, nitrogen oxides, chlorine, hydrogen chloride, carbon monoxide, sulfuric acid, lead mercury, beryllium compounds, smoke dust and productive dust are discharged into the atmosphere to pollute the air, and the substances enter the human body through respiratory tracts in different ways, some of the substances directly cause harm, some of the substances also have an accumulation effect, and the substances can seriously harm the health of people.
The industrial organic waste gas treatment is generally applied to places where dust, peculiar smell and smoke are generated in chemical plants, electronic plants, printing plants, paint spraying workshops, coating plants, food plants, rubber plants, coating plants, petrochemical industries and the like, and the industrial organic waste gas treatment can effectively remove organic waste gases such as benzene, toluene, xylene, ethyl acetate, acetone butanone, ethanol, acrylic acid, formaldehyde and the like generated in the workshop of the factory.
At present, a detection device capable of evaluating the collection efficiency of industrial organic waste gas is lacking in China, and in order to meet the requirement that the collection efficiency of a treatment system for industrial organic waste gas is scientifically and objectively evaluated by an environmental management department, a test system and a method which can be suitable for industrial organic waste gas and can not be quantitatively evaluated by quickly and accurately evaluating the collection efficiency of the industrial organic waste gas need to be developed.
Disclosure of Invention
The invention aims to provide a test system for evaluating the collection efficiency of industrial organic waste gas, which aims to solve the problem that the efficiency of an industrial source waste gas collection system is insufficient for quantitative evaluation by an environment management department.
A test system for industrial organic waste gas collection efficiency assessment is arranged in a production workshop and is characterized by comprising
The device comprises a gas storage device, a gas collection device, a detection device, a treatment device, an exhaust device and a treatment device;
the gas storage device comprises N high-pressure steady-flow dispersion tanks, and each high-pressure steady-flow dispersion tank is used for storing the volume V0 of the test gas to be discharged and the mass M0 of the test gas;
optionally, the high-pressure steady-flow dispensing tank is a steel cylinder for storing sulfur hexafluoride gas (SF 6).
The top of each high-pressure steady-flow dispersion tank is provided with a pressure stabilizer and a pressure-stabilizing opening valve, and the pressure stabilizer is provided with a pressure-stabilizing sensor for detecting the air pressure in the high-pressure steady-flow dispersion tank and an air pressure adjusting device for adjusting the air pressure of the high-pressure turbulent flow dispersion tank;
when the pressure stabilizing sensor detects that the air pressure P in the high-pressure steady-flow dispersion tank is lower than a set pressure stabilizing threshold value Pth, the air pressure regulator is appropriately pressurized to ensure that the pressure in the high-pressure steady-flow dispersion tank is within a preset range;
optionally, the pressure stabilizer is a negative pressure stabilizing pump.
The pressure stabilizing opening valve is provided with a conical rotating rod; when the pressure stabilizing opening valve is rotated, the conical rotating rod can puncture the top of the high-pressure steady flow dispersion tank by using a cone to release the stored test gas of the high-pressure steady flow dispersion tank;
the gas collecting device comprises a gas collecting hood and a gas collecting pipeline, and the gas collecting hood is connected with the gas collecting pipeline;
the gas collecting hood is arranged above the high-pressure steady flow dispersing tank and used for collecting the test gas released by the high-pressure steady flow dispersing tank and transmitting the test gas to the gas collecting pipeline;
optionally, the gas collection pipeline is a teflon pipe;
optionally, the gas collecting hood may be a conical structure, a trapezoidal structure or a cylindrical structure;
the detection device is provided with a monitoring sensor A, a monitoring sensor B and a calculation unit;
the monitoring sensor A is arranged in the gas collecting hood and is used for acquiring exhaust time T and acquiring the test gas flow speed V1 of the gas collecting hood within the exhaust time T;
the monitoring sensor B is arranged in the gas collecting pipeline and is used for acquiring the test gas concentration C1 of the gas collecting hood;
the calculation unit calculates the test gas collection total mass M2 from the purge time T, the test gas flow rate V1 and the test gas concentration C1;
optionally, the calculating unit calculates the total test gas collection mass M2 by using an integration principle to calculate the exhaust time T, the test gas flow rate V1 and the test gas concentration C1;
the treatment device is connected with the gas collecting pipeline and used for treating the test gas and discharging the treated test gas through the exhaust device;
the exhaust device comprises an exhaust cylinder and an exhaust valve, and a monitoring sensor C for detecting the volume V3 of the treated test gas is arranged in the exhaust cylinder; when the test gas volume V3 is detected to be greater than or equal to an exhaust threshold value Vth, opening the exhaust valve and exhausting the processed test gas;
the processing device comprises a data processing unit and a display unit;
the data processing unit obtains the total mass M1 of the test gas according to the mass M0 of the test gas stored in each high-pressure steady-flow dispersion tank and the number N of each high-pressure steady-flow dispersion tank, and calculates the collection efficiency N of the test gas according to the total mass M1 of the test gas and the total mass M2 of the test gas; wherein n is M2/M1;
the display unit is used for displaying the total mass M1 of the test gas, the total mass M2 of the test gas collection and the test gas collection efficiency n.
Optionally, the display unit is a touch display screen.
Optionally, the displaying the parameters of the test gas on the display unit in real time according to the requirements and settings of the user includes: the test gas mass M0, and or the quantity N, the total test gas mass M1, the vent time T, the test gas flow rate V1 and the test gas concentration C1, the total test gas collection mass M2 and one or more of the test gas collection efficiency N.
M1＝N*M0；
A test method for collecting efficiency evaluation of industrial organic waste gas, which is applied to the test system of claims 1-4, comprises the following steps:
rotating the pressure stabilizing opening valve to release the test gas stored in the N high-pressure flow stabilizing dispersion tanks;
wherein each of the high pressure steady flow dispensing canisters is adapted to store a test gas volume V0 and a test gas mass M0 to be discharged;
collecting the test gas released by the N high-pressure steady-flow dispersion tanks;
acquiring exhaust time T and acquiring test gas flow velocity V1 of the gas collecting hood within the exhaust time T;
acquiring the test gas concentration C1 of the gas collecting hood;
calculating the test gas collection total mass M2 from the vent time T, the test gas flow rate V1 and the test gas concentration C1;
obtaining the total mass M1 of the test gas according to the mass M0 of the test gas stored in each high-pressure steady-flow dispersion tank and the number N of each high-pressure steady-flow dispersion tank, and calculating the collection efficiency N of the test gas according to the total mass M1 of the test gas and the total mass M2 of the test gas; wherein n is M2/M1;
the total mass of test gas, M1, the total mass of test gas collection, M2, and the test gas collection efficiency, n, are shown.
The test system for evaluating the collection efficiency of the industrial organic waste gas can simulate the diffusion condition of the industrial organic waste gas in an actual working state, and can calculate the collection efficiency of the test system of the test gas through the test gas in the test system and the processing device, so that the problem that the efficiency of the waste gas collection system cannot be quantitatively evaluated is solved. In addition, the testing system can display the parameters of the testing gas in real time through the display unit, and has the advantages of simple and convenient operation.
Drawings
A more complete appreciation of the invention and many of the attendant advantages thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings, wherein the accompanying drawings are included to provide a further understanding of the invention and form a part of this specification, and wherein the illustrated embodiments and descriptions thereof are intended to illustrate and not limit the invention, wherein:
FIG. 1 is a schematic structural diagram of a test system for collecting efficiency evaluation of industrial organic waste gas according to the present invention.
FIG. 2 is a schematic view of the structure of the gas storage device of the present invention.
FIG. 3 is a schematic structural diagram of the detecting device of the present invention.
Fig. 4 is a schematic structural view of the exhaust apparatus of the present invention.
FIG. 5 is a schematic view of the structure of the treating apparatus of the present invention.
FIG. 6 is a flow chart of a testing method for collecting efficiency evaluation of industrial organic waste gas according to the present invention.
Detailed Description
The technical solution of the present invention is further described below with reference to the following embodiments and the accompanying drawings.
Example 1
Referring to fig. 1-5, 1. a test system for collecting efficiency evaluation of industrial organic waste gas is arranged in a production workshop and comprises
The device comprises a gas storage device, a gas collection device, a detection device, a treatment device, an exhaust device and a treatment device;
the gas storage device comprises N high-pressure steady-flow dispersion tanks, and each high-pressure steady-flow dispersion tank is used for storing the volume V0 of the test gas to be discharged and the mass M0 of the test gas;
the top of each high-pressure steady-flow dispersion tank is provided with a pressure stabilizer and a pressure-stabilizing opening valve, and the pressure stabilizer is provided with a pressure-stabilizing sensor for detecting the air pressure in the high-pressure steady-flow dispersion tank and an air pressure adjusting device for adjusting the air pressure of the high-pressure turbulent flow dispersion tank; when the pressure stabilizing sensor detects that the air pressure P in the high-pressure steady-flow dispersion tank is lower than a set pressure stabilizing threshold value Pth, the air pressure regulator is appropriately pressurized to ensure that the pressure in the high-pressure steady-flow dispersion tank is within a preset range;
the pressure stabilizing opening valve is provided with a conical rotating rod; when the pressure stabilizing opening valve is rotated, the conical rotating rod can puncture the top of the high-pressure steady flow dispersion tank by using a cone to release the stored test gas of the high-pressure steady flow dispersion tank;
the gas collecting device comprises a gas collecting hood and a gas collecting pipeline, and the gas collecting hood is connected with the gas collecting pipeline;
the gas collecting hood is arranged above the high-pressure steady flow dispersing tank and used for collecting the test gas released by the high-pressure steady flow dispersing tank and transmitting the test gas to the gas collecting pipeline;
the detection device is provided with a monitoring sensor A, a monitoring sensor B and a calculation unit;
the monitoring sensor A is arranged in the gas collecting hood and is used for acquiring exhaust time T and acquiring the test gas flow speed V1 of the gas collecting hood within the exhaust time T;
the monitoring sensor B is arranged in the gas collecting pipeline and is used for acquiring the test gas concentration C1 of the gas collecting hood;
the calculation unit calculates the test gas collection total mass M2 from the purge time T, the test gas flow rate V1 and the test gas concentration C1;
the treatment device is connected with the gas collecting pipeline and used for treating the test gas and discharging the treated test gas through the exhaust device;
the exhaust device comprises an exhaust cylinder and an exhaust valve, and a monitoring sensor C for detecting the volume V3 of the treated test gas is arranged in the exhaust cylinder; when the test gas volume V3 is detected to be greater than or equal to an exhaust threshold value Vth, opening the exhaust valve and exhausting the processed test gas;
the processing device comprises a data processing unit and a display unit;
the data processing unit obtains the total mass M1 of the test gas according to the mass M0 of the test gas stored in each high-pressure steady-flow dispersion tank and the number N of each high-pressure steady-flow dispersion tank, and calculates the collection efficiency N of the test gas according to the total mass M1 of the test gas and the total mass M2 of the test gas; wherein n is M2/M1;
the display unit is used for displaying the total mass M1 of the test gas, the total mass M2 of the test gas collection and the test gas collection efficiency n.
The test system for evaluating the collection efficiency of the industrial organic waste gas can simulate the diffusion condition of the industrial organic waste gas in an actual working state, and can calculate the collection efficiency of the test system of the test gas through the test gas in the test system and the processing device, so that the problem that the efficiency of the waste gas collection system cannot be quantitatively evaluated is solved. In addition, the testing system can display the parameters of the testing gas in real time through the display unit, and has the advantages of simple and convenient operation.
In this embodiment, optionally, the high-pressure steady-flow dispensing tank is a steel cylinder for storing sulfur hexafluoride gas (SF 6). The voltage stabilizer of the high-pressure steady-flow dispersion tank is a negative-pressure steady-pressure pump, and SF6 (sulfur hexafluoride) is used as a test gas, so that the concentration of SF6 (sulfur hexafluoride) in the environment is very low and is lower than the general detection limit, and the error of a substrate in the environment to a calculation result can be reduced to the minimum.
In this embodiment, optionally, the gas collecting pipeline is a teflon pipe;
in this embodiment, optionally, the gas collecting channel may have a conical structure, a trapezoidal structure, or a cylindrical structure;
in this embodiment, optionally, the calculating unit calculates the total test gas collecting mass M2 by using an integration principle to calculate the exhaust time T, the test gas flow rate V1 and the test gas concentration C1;
in this embodiment, optionally, the display unit is a touch display screen.
In this embodiment, optionally, the displaying the parameters of the test gas on the display unit in real time according to the requirements and settings of the user includes: the test gas mass M0, and or the quantity N, the total test gas mass M1, the vent time T, the test gas flow rate V1 and the test gas concentration C1, the total test gas collection mass M2 and one or more of the test gas collection efficiency N.
Example 2
As shown in fig. 6, the present embodiment further provides a testing method for evaluating the collection efficiency of industrial organic waste gas by using the above evaluation device, comprising the following steps:
rotating the pressure stabilizing opening valve to release the test gas stored in the N high-pressure flow stabilizing dispersion tanks;
wherein each of the high pressure steady flow dispensing canisters is adapted to store a test gas volume V0 and a test gas mass M0 to be discharged;
collecting the test gas released by the N high-pressure steady-flow dispersion tanks;
acquiring exhaust time T and acquiring test gas flow velocity V1 of the gas collecting hood within the exhaust time T;
acquiring the test gas concentration C1 of the gas collecting hood;
calculating the test gas collection total mass M2 from the vent time T, the test gas flow rate V1 and the test gas concentration C1;
obtaining the total mass M1 of the test gas according to the mass M0 of the test gas stored in each high-pressure steady-flow dispersion tank and the number N of each high-pressure steady-flow dispersion tank, and calculating the collection efficiency N of the test gas according to the total mass M1 of the test gas and the total mass M2 of the test gas; wherein n is M2/M1;
the total mass of test gas, M1, the total mass of test gas collection, M2, and the test gas collection efficiency, n, are shown.
The method for evaluating the collecting efficiency of the gas collecting system is to select and determine representative monitoring points in the area where the gas collecting system is installed; setting the emission rate of the test gas and the sampling rate of the gas collecting device, finally displaying the real-time change condition of the concentration of the test gas through the analyzing device, and the release amount of the test gas, and comprehensively accounting and evaluating the collecting efficiency of the industrial organic waste gas collecting system. The method can rapidly and accurately measure the collection efficiency of the industrial organic waste gas collection system on site.
Optionally, the parameters of the test gas may also be displayed in real time including one or more of the test gas mass M0, and or the quantity N, the total test gas mass M1, the venting time T, the test gas flow rate V1 and the test gas concentration C1, the total test gas collection mass M2 and the test gas collection efficiency N.
M1＝N*M0；
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A test system for industrial organic waste gas collection efficiency assessment is arranged in a production workshop and is characterized by comprising
The device comprises a gas storage device, a gas collection device, a detection device, a treatment device, an exhaust device and a treatment device;
the gas storage device comprises N high-pressure steady-flow dispersion tanks, and each high-pressure steady-flow dispersion tank is used for storing the volume V0 of the test gas to be discharged and the mass M0 of the test gas;
the top of each high-pressure steady-flow dispersion tank is provided with a pressure stabilizer and a pressure-stabilizing opening valve, and the pressure stabilizer is provided with a pressure-stabilizing sensor for detecting the air pressure in the high-pressure steady-flow dispersion tank and an air pressure adjusting device for adjusting the air pressure of the high-pressure turbulent flow dispersion tank; when the pressure stabilizing sensor detects that the air pressure P in the high-pressure steady-flow dispersion tank is lower than a set pressure stabilizing threshold value Pth, the air pressure regulator is appropriately pressurized to ensure that the pressure in the high-pressure steady-flow dispersion tank is within a preset range;
the pressure stabilizing opening valve is provided with a conical rotating rod; when the pressure stabilizing opening valve is rotated, the conical rotating rod can puncture the top of the high-pressure steady flow dispersion tank by using a cone to release the stored test gas of the high-pressure steady flow dispersion tank;
the gas collecting device comprises a gas collecting hood and a gas collecting pipeline, and the gas collecting hood is connected with the gas collecting pipeline;
the gas collecting hood is arranged above the high-pressure steady flow dispersing tank and used for collecting the test gas released by the high-pressure steady flow dispersing tank and transmitting the test gas to the gas collecting pipeline;
the detection device is provided with a monitoring sensor A, a monitoring sensor B and a calculation unit;
the monitoring sensor A is arranged in the gas collecting hood and is used for acquiring exhaust time T and acquiring the test gas flow speed V1 of the gas collecting hood within the exhaust time T;
the monitoring sensor B is arranged in the gas collecting pipeline and is used for acquiring the test gas concentration C1 of the gas collecting hood;
the calculation unit calculates the test gas collection total mass M2 from the purge time T, the test gas flow rate V1 and the test gas concentration C1;
the treatment device is connected with the gas collecting pipeline and used for treating the test gas and discharging the treated test gas through the exhaust device;
the exhaust device comprises an exhaust cylinder and an exhaust valve, and a monitoring sensor C for detecting the volume V3 of the treated test gas is arranged in the exhaust cylinder; when the test gas volume V3 is detected to be greater than or equal to an exhaust threshold value Vth, opening the exhaust valve and exhausting the processed test gas;
the processing device comprises a data processing unit and a display unit;
the data processing unit obtains the total mass M1 of the test gas according to the mass M0 of the test gas stored in each high-pressure steady-flow dispersion tank and the number N of each high-pressure steady-flow dispersion tank, and calculates the collection efficiency N of the test gas according to the total mass M1 of the test gas and the total mass M2 of the test gas; wherein n is M2/M1;
the display unit is used for displaying the total mass M1 of the test gas, the total mass M2 of the test gas collection and the test gas collection efficiency n.
2. The test system of claim 1, wherein the high pressure steady flow dispensing canister stores a cylinder of sulfur hexafluoride gas (SF 6).
3. The test system of claim 1, wherein the voltage regulator is a negative pressure regulator pump.
4. The test system of claim 1, wherein the gas collection line is a teflon tube.
5. The testing system of claim 1, wherein the gas collection enclosure is of a conical configuration, a trapezoidal configuration, or a cylindrical configuration.
6. The test system of claim 1, wherein the display unit is a touch screen display.
7. The testing system of claim 6, wherein the parameters for displaying the test gas in real time on the touch screen display include one or more of the test gas mass M0, and or the quantity N, the total test gas mass M1, the vent time T, the test gas flow rate V1 and the test gas concentration C1, the total test gas collection mass M2 and the test gas collection efficiency N.
8. A test method for industrial organic waste gas collection efficiency evaluation, which is applied to the test system of claims 1-4, and is characterized by comprising the following steps:
rotating the pressure stabilizing opening valve to release the test gas stored in the N high-pressure flow stabilizing dispersion tanks;
wherein each of the high pressure steady flow dispensing canisters is adapted to store a test gas volume V0 and a test gas mass M0 to be discharged;
collecting the test gas released by the N high-pressure steady-flow dispersion tanks;
acquiring exhaust time T and acquiring test gas flow velocity V1 of the gas collecting hood within the exhaust time T;
acquiring the test gas concentration C1 of the gas collecting hood;
calculating the test gas collection total mass M2 from the vent time T, the test gas flow rate V1 and the test gas concentration C1;
obtaining the total mass M1 of the test gas according to the mass M0 of the test gas stored in each high-pressure steady-flow dispersion tank and the number N of each high-pressure steady-flow dispersion tank, and calculating the collection efficiency N of the test gas according to the total mass M1 of the test gas and the total mass M2 of the test gas; wherein n is M2/M1;
the total mass of test gas, M1, the total mass of test gas collection, M2, and the test gas collection efficiency, n, are shown.
9. The testing method of claim 8, wherein the parameters of the test gas may also be displayed in real time including one or more of the test gas mass M0, and or the quantity N, the total test gas mass M1, the vent time T, the test gas flow rate V1 and the test gas concentration C1, the total test gas collection mass M2 and the test gas collection efficiency N.
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Application publication date: 20210511 |