CN205157267U - Porous diluting device of smoke particulate - Google Patents
Porous diluting device of smoke particulate Download PDFInfo
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- CN205157267U CN205157267U CN201520912926.8U CN201520912926U CN205157267U CN 205157267 U CN205157267 U CN 205157267U CN 201520912926 U CN201520912926 U CN 201520912926U CN 205157267 U CN205157267 U CN 205157267U
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Abstract
The utility model relates to a porous diluting device of smoke particulate, including diluting exocoel (2 -41), diluting inner chamber (2 -42) and carrier gas heater (4 -4), seted up dilutent hole (2 -43) on diluting inner chamber (2 -42), the design of dilution hole is conical aperture, is close to the bottom surface diameter that dilutes the exocoel and is greater than the bottom surface diameter near diluting the inner chamber, the carrier gas is diluted the inner chamber by carrier gas heater (4 -4) heating for hot carrier gas back -porch dilution exocoel (2 -41) gets into through dilution hole (2 -43). The utility model discloses a change the dilutent effect of the temperature control flue gas of carrier gas, can realize that mixture temperature is adjustable. And the diluent gas gets into the transmission line through the aperture that distributes on the transmission line, and the messenger dilutes more evenly.
Description
Technical field
The utility model belongs to environmental monitoring technology field, relates to a kind of flue gas particles porous air mix facilities.
Background technology
Current China atmospheric environment outstanding problem, regional gray haze takes place frequently, and causes extensive concern.Gray haze is formed mainly to be increased by fine particle (PM2.5) in air and causes, and the PM2.5 of the fixed combustion source emission based on fire coal is the main source of PM2.5 in air.How rationally to gather particle from fixed combustion source emission, understand its domain size distribution and physicochemical characteristic, for atmospheric pollution source resolution, formulate pollution prevention measure, improve village environment air quality tool is of great significance.
For the collection of fine particle in stationary source flue gas, main employing dilution tunnel method is carried out, the ultimate principle of the method is in dilution tunnel, utilized by high-temperature flue gas pure air to dilute, and be cooled to atmospheric temperature, after staying for some time, fine particle is sampled device and is separated by certain particle size and traps.Its advantage is a cancellation that flue-gas temperature is high, high humidity, fine particle concentration are high and the impact of other gases, the Combustion Source method of sampling is simplified, expand the usable range of filter membrane simultaneously, also simplify and expand the measurement range of chemical species, also make the application of more advanced aerosol measurement device in Combustion Source become possibility simultaneously.
Utility model content
The purpose of this utility model is to provide a kind of flue gas particles porous air mix facilities.The technical solution of the utility model is as follows:
A kind of flue gas particles porous air mix facilities, comprise dilution exocoel (2-41), dilution inner chamber (2-42) and carrier gas well heater (4-4), dilution inner chamber (2-42) offers dilution holes (2-43), dilution holes is designed to conical apertures, and the basal diameter near dilution exocoel is greater than the basal diameter near dilution inner chamber; Dilution inner chamber is entered along dilution exocoel (2-41) by dilution holes (2-43) after carrier gas is heated to be hot carrier gas by carrier gas well heater (4-4).
The beneficial effects of the utility model are: the dilution effect being controlled flue gas by the temperature changing carrier gas, can realize mixture temperature adjustable.And diluents, by entering transmission line along the aperture that transmission line distributes, makes dilution more even.
Accompanying drawing explanation
Fig. 1 is for applying stationary source flue gas particles dilution method sampling system schematic diagram of the present utility model.
In figure: 1-flue gas flow rate measure portion; 2-particle collecting part; 3-carrier gas distribution part; 4-automatic constant speed control section.
1-1-pitot tube; 1-2-gas differential pressure transmitter; 2-1-sampling gun; 2-2-gas temperature hygrometer; 2-3-Gas Flowmeter; 2-4-one-level air mix facilities; 2-5-gas pressure sensor; The import of 2-6-one-level carrier gas; 2-7-secondary air mix facilities; The import of 2-8-secondary carrier gas; 2-9-flue gas aging chamber; 2-10-flue gas air-out apparatus; 2-11-particle harvester; 3-1-air compression plant; 3-2-gas-holder; 3-3-gas diverter; 4-1-data processor; 4-2-one-level carrier gas mass flow controller; 4-3-secondary carrier gas mass flow controller; 4-4-carrier gas well heater.
Fig. 2 is the schematic diagram of flue gas particles porous air mix facilities of the present utility model.
In figure: 2-2-gas temperature hygrometer; 2-41 one-level dilution exocoel, 2-42 one-level dilution inner chamber; 2-43 dilution holes; 2-5-gas pressure sensor; The import of 2-6-one-level carrier gas; Arrow represents airflow direction.
Embodiment
Below in conjunction with accompanying drawing, the utility model and application scenarios thereof are described further.
See Fig. 1, employ particle acquisition system of the present utility model and comprise flue gas flow rate measure portion, particle collecting part and automatic constant speed control section.
Flue gas flow rate measure portion comprises pitot tube (1-1) and gas pressure difference transmitter (1-2), gas differential pressure transmitter (1-2) is for measuring the flue gas flow rate of the sampled point guided by pitot tube, and its transmitting measured values is to the data processor (4-1) of automatic constant speed control section;
Particle collecting part comprises the sampling gun (2-1), one-level air mix facilities (2-4), secondary air mix facilities (2-7), flue gas aging chamber (2-9) and the flue gas air-out apparatus (2-10) that connect successively, and the gas outlet place of flue gas air-out apparatus (2-10) is provided with particle harvester (2-11); The flue gas of discharge is sampled by sampling gun in flue, through one-level dilution, secondary dilution, stop aging after by particle harvester collection particle wherein; Gas Flowmeter (2-3) is provided with, by sampling air flow speed real-time Transmission to data processor (4-1) in sampling gun; One-level air mix facilities (2-4) adopts porous to dilute, and secondary air mix facilities (2-7) adopts jet to dilute;
Carrier gas distribution part, comprises air compression plant (3-1), gas-holder (3-2) and gas diverter (3-3);
The all parts comprising sampling gun, one-level air mix facilities, secondary air mix facilities and flue gas aging chamber is fixed with gas temperature hygrometer and gas pressure sensor Real-Time Monitoring smoke behavior everywhere, and each Monitoring Data is admitted to data processor (4-1);
Automatic constant speed control section, comprises data processor (4-1), one-level carrier gas mass flow controller (4-2), secondary carrier gas mass flow controller (4-3) and carrier gas well heater (4-4); The pressurized air discharged from gas-holder (3-2) is divided into two-way through gas diverter (3-3), one tunnel is one-level carrier gas, another road is secondary carrier gas, its flow and flow velocity are controlled by one-level carrier gas mass flow controller (4-2) and secondary carrier gas mass flow controller (4-3) respectively, and wherein one-level carrier gas is heated to be hot carrier gas by carrier gas well heater (4-4);
The one-level air mix facilities (2-4) that above-mentioned particle acquisition system adopts is flue gas particles porous air mix facilities of the present utility model, as shown in Figure 2, comprise one-level dilution exocoel (2-41), one-level dilution inner chamber (2-42), one-level dilution inner chamber (2-42) offers dilution holes (2-43); One-level carrier gas dilutes exocoel (2-41) along one-level and enters dilution inner chamber by dilution holes (2-43), the dilution effect of flue gas is controlled by the flow and temperature changing carrier gas, realize one-level combination gas humidity and temperature adjustable, dilution holes is designed to conical apertures, and the basal diameter near dilution exocoel is greater than the basal diameter near dilution inner chamber;
Data processor (4-1), for receiving the smoke behavior information from monitoring everywhere, and control gas diverter (3-3), one-level carrier gas mass flow controller (4-2) and secondary carrier gas mass flow controller (4-3).
Before preparing sampling, each parts are assembled according to accompanying drawing, checks whether each parts have exception.
Pitot tube (1-1) is first placed in sample, measures flue gas mean flow rate in flue before using by system, and according to the upper size of installing sample nozzle of the flow velocity determination sampling gun (2-1) measured; Use humiture and the water capacity of portable gas humiture dew point hygrometer test flue gas, and determine the heating-up temperature of sampling gun, general heating-up temperature is 120 DEG C.
2 requirements below system should meet when particle gathers simultaneously: one is that flue gas in flue gas aging chamber (2-9) meets collection requirement; Two is the samplings of overall process automatic constant speed.System in use, first realizes flue gas and meets collection requirement.Flue gas after two-stage dilution stops 10-15 second in flue gas aging chamber (2-9), whether meet particle by the condition adjudgement observing flue gas in aging chamber and gather requirement, if meet collection requirement, illustrate that total dilution ratio is rational, namely the air inlet total amount of one-level carrier gas and secondary carrier gas is rational.Secondly, in the rational scope of guarantee air inlet total amount, one-level dilution and secondary dilution air inflow are redistributed, realizes isokinetic sampling.Concrete operations are as follows:
Pitot tube (1-1) and sampling gun (2-1) are placed in sampled point in the lump, sampling gun are heated simultaneously; Open carrier gas distribution part, air compression plant (3-1) works, and gas-holder (3-2) interior gaseous tension remains on 8-10MPa, and gas diverter (3-3) controls air inlet total amount and is divided into two by pressurized air; Open automatic constant speed control section, one-level carrier gas mass flow controller (4-2) and secondary carrier gas mass flow controller (4-3) are started working, and heat one-level carrier gas simultaneously; Now, the gas temperature hygrometer (2-2) on one-level air mix facilities (2-4), secondary air mix facilities (2-7), flue gas aging chamber (2-9) and the smoke behavior in each device of gas pressure sensor (2-5) Real-Time Monitoring transfer to data processor (4-1).Data processor (4-1) controls gas diverter (3-3) and regulates until meet collection requirement according to the smoke behavior in flue gas aging chamber (2-9) to carrier gas total amount, receive flue gas flow rate V1 that pitot tube (1-1) records and the extraction velocity of flue gas V2 that Gas Flowmeter (2-3) records simultaneously, and by controlling secondary carrier gas mass flow controller (4-3), regulate secondary carrier gas flow and flow velocity.
When the flue gas in flue gas aging chamber (2-9) meet collection require time, one-level carrier gas and secondary carrier gas air inlet total amount reasonable, under the prerequisite that air inlet total amount is constant, one-level carrier gas mass flow controller (4-2) and secondary carrier gas mass flow controller (4-3) adjust simultaneously, until the speed of evacuation that Gas Flowmeter (2-3) records is equal with flue gas flow rate in flue.One-level carrier gas mass flow controller (4-2) and secondary carrier gas mass flow controller (4-3) response time are less than 1 second, can guarantee the real-time adjusted, and increase the stability of system.
If the flue gas in flue gas aging chamber (2-9) does not meet collection requirement, air inlet insufficient total amount is described, now preferentially increases the air demand of one-level carrier gas, until meet collection requirement.
After above-mentioned adjustment completes, open particle harvester (2-11), carry out particulate cascade collection.Flue gas air-out apparatus (2-10) is designed to six gas outlets, must ensure that at least one communicates with atmospheric environment during sampling, and total flow that gathers must not exceed the total amount extracting flue gas and two-stage dilution gas.
The principle of work of whole stationary source flue gas particles dilution method automatic constant speed sampling system is:
1) Real-Time Monitoring smoke behavior.By gas temperature hygrometer (2-2) that sampling gun, one-level air mix facilities, secondary air mix facilities, flue gas aging chamber are installed and gas pressure sensor (2-5) Real-Time Monitoring smoke behavior, until the flue gas in flue gas aging chamber (2-9) meets collection requirement.
2) dehumidifying and cooling are responsible in one-level dilution, and secondary dilution is responsible for controlling the speed of evacuation.The dehumidifying of one-level air mix facilities (2-4) primary responsibility flue gas and cooling, collection requirement whether is met according to the gas in flue gas aging chamber (2-9), regulate the flow of one-level carrier gas, and by carrier gas well heater (4-4), carrier gas is heated; Secondary air mix facilities adopts ejector, regulates jet gas velocity by it, and then controls the speed of evacuation, makes V1=V2, realizes isokinetic sampling.
Claims (1)
1. a flue gas particles porous air mix facilities, comprise dilution exocoel (2-41), dilution inner chamber (2-42) and carrier gas well heater (4-4), it is characterized in that, dilution inner chamber (2-42) offers dilution holes (2-43), dilution holes is designed to conical apertures, and the basal diameter near dilution exocoel is greater than the basal diameter near dilution inner chamber; Dilution inner chamber is entered along dilution exocoel (2-41) by dilution holes (2-43) after carrier gas is heated to be hot carrier gas by carrier gas well heater (4-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520912926.8U CN205157267U (en) | 2015-11-16 | 2015-11-16 | Porous diluting device of smoke particulate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520912926.8U CN205157267U (en) | 2015-11-16 | 2015-11-16 | Porous diluting device of smoke particulate |
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| CN205157267U true CN205157267U (en) | 2016-04-13 |
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| CN201520912926.8U Active CN205157267U (en) | 2015-11-16 | 2015-11-16 | Porous diluting device of smoke particulate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107655799A (en) * | 2017-09-24 | 2018-02-02 | 中国科学院合肥物质科学研究院 | A kind of Portable movable discharge of pollutant sources particle sampling measuring system and method |
| CN109647235A (en) * | 2018-12-29 | 2019-04-19 | 苏州天蓝分析仪器有限公司 | A kind of dilution device based on gas mixing dilution mode |
| CN109765083A (en) * | 2018-12-26 | 2019-05-17 | 西安交通大学 | A kind of sampling of high-humidity gas fume particle and measuring device and its application method |
| CN109781474A (en) * | 2018-12-26 | 2019-05-21 | 西安交通大学 | A kind of sampling of high-temperature flue gas particle and measuring device and its application method |
| CN111220423A (en) * | 2020-01-17 | 2020-06-02 | 中煤科工集团重庆研究院有限公司 | Flue gas particulate matter collecting pipe and flue gas particulate matter collecting method |
-
2015
- 2015-11-16 CN CN201520912926.8U patent/CN205157267U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107655799A (en) * | 2017-09-24 | 2018-02-02 | 中国科学院合肥物质科学研究院 | A kind of Portable movable discharge of pollutant sources particle sampling measuring system and method |
| CN107655799B (en) * | 2017-09-24 | 2019-11-01 | 中国科学院合肥物质科学研究院 | A kind of Portable movable discharge of pollutant sources particle sampling measuring system and method |
| CN109765083A (en) * | 2018-12-26 | 2019-05-17 | 西安交通大学 | A kind of sampling of high-humidity gas fume particle and measuring device and its application method |
| CN109781474A (en) * | 2018-12-26 | 2019-05-21 | 西安交通大学 | A kind of sampling of high-temperature flue gas particle and measuring device and its application method |
| CN109781474B (en) * | 2018-12-26 | 2021-01-19 | 西安交通大学 | High-temperature flue gas particle sampling and measuring device and using method thereof |
| CN109647235A (en) * | 2018-12-29 | 2019-04-19 | 苏州天蓝分析仪器有限公司 | A kind of dilution device based on gas mixing dilution mode |
| CN111220423A (en) * | 2020-01-17 | 2020-06-02 | 中煤科工集团重庆研究院有限公司 | Flue gas particulate matter collecting pipe and flue gas particulate matter collecting method |
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