CN203216909U - Gas analysis system - Google Patents
Gas analysis system Download PDFInfo
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- CN203216909U CN203216909U CN 201220756014 CN201220756014U CN203216909U CN 203216909 U CN203216909 U CN 203216909U CN 201220756014 CN201220756014 CN 201220756014 CN 201220756014 U CN201220756014 U CN 201220756014U CN 203216909 U CN203216909 U CN 203216909U
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Abstract
The utility model provides a gas analysis system. The system comprises a sampling unit, a transporting unit, a temperature reducing unit, an adsorption unit, a heating unit, a blowing unit and a detecting unit, wherein the sampling unit is used for sampling detected gas in a to-be-detected environment, and transporting the sampled gas into the transporting unit; the transporting unit is used for maintaining the temperature of the detected gas and transporting the gas to the temperature reducing unit; the temperature reducing unit is used for reducing the temperature of the detected gas transported by the transporting unit; the adsorption unit is used for selectively adsorbing a to-be-detected component in the detected gas transported by the temperature reducing unit; the heating unit is used for heating the adsorbing unit; the blowing unit is used for blowing the heated to-be-detected component inside the adsorption unit into the detecting unit; the detecting unit is used for detecting the content of the to-be-detected component. The gas analysis system provided by the utility model has the advantages of good stability, good university, capability of effectively reducing signal fluctuation, capability of benefiting the accuracy improvement of subsequent detection and the like.
Description
Technical field
The utility model relates to gas analysis, particularly gas analysis system.
Background technology
Adopt the on-line chromatograph technology to carry out in the waste incineration gas in the online testing process of organism, owing to contain a large amount of water vapor in the waste incineration gas, account for 10%～30% of gas volume mark, water vapor enters and causes easily in the chromatograph that chromatographic column runs off, and shortens the serviceable life of chromatographic column; After corrosive gas condensation in the waste incineration gas, produce acidic liquid, corrode the instrument internal pipeline easily.Cause appliance requires often to safeguard and change parts, be unfavorable for that the long-term on-line analysis of instrument detects.
The prior art solution:
1, semiconductor refrigerating dewaters, analytical gas is cooled to 4 ℃ to dewater, during this method is applicable to that the lower sample analysis of boiling point is handled, in the flue gas organism was analyzed, the total class of organism was more, and the sample boiling spread is wideer, after being down to low temperature from 180 ℃ of furnace gas temperatures, can cause the higher material of organic a large amount of loss, especially boiling point, loss can be bigger;
2, the Nafion pipe dewaters, the Nafion pipe is a kind of special material, maximum operation (service) temperature can reach 120 ℃, can be with sample drying to 100 ℃, when being dried to normal temperature condition, need to use an other normal temperature Nafion pipe to carry out redrying, can cause the loss of high boiling substance equally, and that partial organic substances is had certain absorption is residual for the Nafion pipe under the normal temperature condition, can cause certain background interference;
3, lithium chloride drying tube adopts the drying tube of anhydrous Lithium chloride filler under 100 ℃ sample to be carried out drying, after the drying lithium chloride drying tube is warming up to 300 ℃ of blowbacks, and the lithium chloride drying tube is carried out burin-in process.But caking easily in this drying device use stops up gas circuit, and contains part mineral-type gas in the flue gas, under water vapor acting easily and lithium chloride react, cause the drying device inactivation.
The utility model content
In order to solve the deficiency in the above-mentioned prior art scheme, the utility model provides a kind of good stability, has detected gas analysis system accurately.
The purpose of this utility model is achieved through the following technical solutions:
A kind of gas analysis system, described gas analysis system comprises:
Sampling unit, described sampling unit is used for the tested gas of sampling environment to be measured, and is sent to transmission unit;
Transmission unit, described transmission unit are used for keeping the temperature of described tested gas, and are sent to the cooling unit;
The cooling unit, the temperature of the tested gas that described cooling unit sends for reducing transmission unit;
Absorbing unit, described absorbing unit are used for optionally adsorbing the component to be measured of the tested gas that sends from the cooling unit and discharge described component to be measured when analgesic being heated the unit;
Heating unit, described heating unit are used for the described absorbing unit of heating;
Purge the unit, the component described to be measured in the absorbing unit after described purging unit is used for heating blows into detecting unit;
Detecting unit, described detecting unit is for detection of described components contents to be measured.
According to above-mentioned analytic system, preferably, fill Tenax TA or Tenax GR in the described absorbing unit.
According to above-mentioned analytic system, alternatively, described component to be measured is volatile organic matter.
According to above-mentioned analytic system, preferably, the temperature by the tested gas behind the described cooling unit is higher than 95 degree.
According to above-mentioned analytic system, alternatively, described purging unit comprises:
First handover module, described first handover module are used for making the input end of described absorbing unit optionally be communicated with described transmission unit, first end;
Second handover module, described second handover module are used for making the output terminal of described absorbing unit optionally be communicated with the external world or second end;
Described detecting unit is communicated with described first end or second end.
According to above-mentioned analytic system, preferably, described environment to be measured is flue or the chimney in the waste incineration.
According to above-mentioned analytic system, preferably, the stainless steel pipes that described transmission unit adopts deactivation to handle.
Compared with prior art, the beneficial effect that the utlity model has is:
1, is suitable for hot conditions go down water vapor and corrosive gas in the organic matter removal, is specially adapted to gas-monitoring under the waste incineration occasion;
2, device is simple, and long-time stability are good;
3, can select different adsorption stuffings according to constitutive property to be analyzed, as Tenax TA, TenaxGR etc., have certain selectivity.
Description of drawings
With reference to accompanying drawing, disclosure of the present utility model will be easier to understand.Those skilled in the art are understood that easily: these accompanying drawings only are used for illustrating the technical solution of the utility model, and are not to be intended to protection domain of the present utility model is construed as limiting.Among the figure:
Fig. 1 is the process flow diagram according to the method for work of the utility model embodiment 1;
Fig. 2 is the structure diagram according to the analytic system of the utility model embodiment 2.
Embodiment
Fig. 1,2 and following declarative description optional embodiment of the present utility model how to implement with instruction those skilled in the art and reproduce the utility model.In order to instruct technical solutions of the utility model, simplified or omitted some conventional aspects.Those skilled in the art should understand that the modification that is derived from these embodiments or replace will be in scope of the present utility model.Those skilled in the art should understand that following characteristics can make up to form a plurality of modification of the present utility model in every way.Thus, the utility model is not limited to following optional embodiment, and is only limited by claim and their equivalent.
Embodiment 1:
The gas analysis system of the utility model embodiment, described analytic system comprises:
Sampling unit, described sampling unit is used for the tested gas of sampling environment to be measured, and is sent to transmission unit; Described sampling unit generally includes sampling probe, aspiration pump, and sampling probe is installed in the environment to be measured such as flue, chimney, and aspiration pump adopts devices such as membrane pump, ejector;
Transmission unit, described transmission unit are used for keeping the temperature of described tested gas, and are sent to the cooling unit; Preferably, described transmission unit can adopt the stainless steel pipes that deactivation is handled;
The cooling unit, the temperature of the tested gas that described cooling unit sends for reducing transmission unit; Described cooling unit can adopt devices such as heat exchanger, being used for temperature with tested gas drops in the temperature range that absorbing unit can bear, and (adding all a spot of aqueous waters separates out preferably to be higher than the boiling point of water, also can accept, therefore a spot of aqueous water can be taken away by air-flow), as 100 degree, 95 degree;
Absorbing unit, described absorbing unit are used for optionally adsorbing the component to be measured of the tested gas that sends from the cooling unit and discharge described component to be measured when analgesic being heated the unit; Remove to select absorbing unit according to component to be measured, as detecting volatile organic matter, then select Tenax TA or Tenax GR as filler;
Heating unit, described heating unit are used for the described absorbing unit of heating, so that the component to be measured of absorbing unit absorption discharges under the environment of heating, heating-up temperature should be higher than 200 degree;
Purge the unit, the component described to be measured in the absorbing unit after described purging unit is used for heating blows into detecting unit;
Detecting unit, described detecting unit is for detection of described components contents to be measured.Described detecting unit can adopt devices such as gas sensor, spectrometric instrument, chromatography instrument.
According to above-mentioned analytic system, alternatively, described purging unit comprises:
First handover module, described first handover module are used for making the input end of described absorbing unit optionally be communicated with described transmission unit, first end;
Second handover module, described second handover module are used for making the output terminal of described absorbing unit optionally be communicated with the external world or second end; First and second handover modules can adopt three-way solenoid valve or other switching device;
Described detecting unit is communicated with described first end or second end.
Fig. 1 has schematically provided the process flow diagram of method of work of the analytic system of the utility model embodiment, and as shown in Figure 1, described method of work may further comprise the steps:
(A1) the tested gas in the sampling unit work, environment to be measured enters transmission unit and is kept certain temperature;
(A2) the cooling unit reduces the temperature of the tested gas that transmission unit sends, and prevents the appearance of aqueous water;
(A3) the tested gas after the cooling enters absorbing unit, and the component to be measured in the tested gas is adsorbed, and other component is drained;
(A4) close absorbing unit and extraneous being communicated with, heat described absorbing unit, described component to be measured discharges;
(A5) purge gas blows out the component described to be measured in the described absorbing unit, and is transported to detecting unit;
(A6) detecting unit is analyzed described components contents to be measured.
The benefit that reaches according to the utility model embodiment 1 is:
Embodiment 2:
Analytic system and method application examples in the online detection of high boiling point organic compound in waste incineration gas according to the utility model embodiment 1.
Fig. 1 has schematically provided the structure diagram of the gas analysis system of the utility model embodiment, as shown in Figure 1, sampling unit adopts sampling probe 21, high temperature sampling pump 22, described sampling probe is installed on the chimney 11, has filtering function, described high temperature sampling pump 22 is arranged on the downstream of absorbing unit 61, is used for extracting out the flue gas in the chimney 11.The stainless steel pipes that supply unit 31 adopts deactivation to handle, peripheral employing electrical heating make flue-gas temperature reach 180 degree in the chimney with the flue gas in the trace pipe road.Cooling unit 41 adopts heat exchanger, makes that the flue-gas temperature after the cooling is 100 degree, is not less than the boiling point of water, thereby avoids the appearance of aqueous water.For adsorb organic compound, in absorbing unit, fill Tenax GR.Simultaneously in the periphery of absorbing unit 61 the electric tracing device is set, is used for heating absorbing unit 61 to discharge organism, heating-up temperature is higher than 200 degree, guarantees the abundant release of adsorbed organic matter.Purge the unit and comprise first T-valve 51, second T-valve 52 and the source of the gas, described first T-valve 51 is arranged between cooling unit and the absorbing unit, be used for making flue gas, purge gas optionally enter absorbing unit, described second T-valve 52 is arranged between described absorbing unit 61 and the detecting unit 71, make optionally to make and remove organic flue gas discharge in the absorbing unit 61, perhaps make sweep gas and organic combination gas enter detecting unit 71.Detecting unit 71 adopts the stratographic analysis module.
Claims (5)
1. gas analysis system, described gas analysis system comprises:
Sampling unit, described sampling unit is used for the tested gas of sampling environment to be measured, and is sent to transmission unit;
Transmission unit, described transmission unit are used for keeping the temperature of described tested gas, and are sent to the cooling unit;
The cooling unit, the temperature of the tested gas that described cooling unit sends for reducing transmission unit;
Absorbing unit, described absorbing unit are used for optionally adsorbing the component to be measured of the tested gas that sends from the cooling unit and discharge described component to be measured when analgesic being heated the unit;
Heating unit, described heating unit are used for the described absorbing unit of heating;
Purge the unit, the component described to be measured in the absorbing unit after described purging unit is used for heating blows into detecting unit;
Detecting unit, described detecting unit is for detection of described components contents to be measured.
2. analytic system according to claim 1 is characterized in that: fill TenaxTA or Tenax GR in the described absorbing unit.
3. analytic system according to claim 1, it is characterized in that: described component to be measured is volatile organic matter.
4. analytic system according to claim 1 is characterized in that: the temperature by the tested gas behind the described cooling unit is higher than 95 degree.
5. analytic system according to claim 1, it is characterized in that: described purging unit comprises:
First handover module, described first handover module are used for making the input end of described absorbing unit optionally be communicated with described transmission unit or first end;
Second handover module, described second handover module are used for making the output terminal of described absorbing unit optionally be communicated with the external world or second end;
Described detecting unit is communicated with described first end or second end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220756014 CN203216909U (en) | 2012-12-29 | 2012-12-29 | Gas analysis system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220756014 CN203216909U (en) | 2012-12-29 | 2012-12-29 | Gas analysis system |
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| Publication Number | Publication Date |
|---|---|
| CN203216909U true CN203216909U (en) | 2013-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220756014 Expired - Fee Related CN203216909U (en) | 2012-12-29 | 2012-12-29 | Gas analysis system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445066A (en) * | 2015-12-31 | 2016-03-30 | 聚光科技(杭州)股份有限公司 | On-line monitoring device and method for VOCs (volatile organic compounds) in flue gas |
| CN107818656A (en) * | 2017-08-13 | 2018-03-20 | 上海万生合金材料有限公司 | A kind of intelligent detecting early-warning device |
-
2012
- 2012-12-29 CN CN 201220756014 patent/CN203216909U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445066A (en) * | 2015-12-31 | 2016-03-30 | 聚光科技(杭州)股份有限公司 | On-line monitoring device and method for VOCs (volatile organic compounds) in flue gas |
| CN105445066B (en) * | 2015-12-31 | 2019-06-14 | 聚光科技(杭州)股份有限公司 | VOC on-Line Monitor Device and method in flue gas |
| CN107818656A (en) * | 2017-08-13 | 2018-03-20 | 上海万生合金材料有限公司 | A kind of intelligent detecting early-warning device |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160315 Address after: 430071 A7 Exhibition Center, 858, hi tech Avenue, East Lake Development Zone, Wuhan, Wuhan, Hubei Patentee after: WUHAN FOCUSED PHOTONICS TESTING TECHNOLOGY CO., LTD. Address before: Hangzhou City, Zhejiang province Binjiang District 310052 shore road 760 Patentee before: Focused Photonics (Hangzhou) Inc. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20181229 |