CN203587412U - High-capacity quartz combustion tube for gasoline analysis - Google Patents
High-capacity quartz combustion tube for gasoline analysis Download PDFInfo
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- CN203587412U CN203587412U CN201320713543.9U CN201320713543U CN203587412U CN 203587412 U CN203587412 U CN 203587412U CN 201320713543 U CN201320713543 U CN 201320713543U CN 203587412 U CN203587412 U CN 203587412U
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- combustion
- combustion tube
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Abstract
The utility model relates to a high-capacity quartz combustion tube for gasoline analysis. The high-capacity quartz combustion tube is characterized in that the combustion tube is provided with two combustion chambers, wherein the first combustion chamber is internally provided with a spiral carrier gas preheating tube and an oxygen preheating tube, the second combustion chamber is internally provided with a spiral combustion-supporting tube, the two adjacent combustion chambers are separated by a separating plate with a through hole, and a back flushing oxygen inlet is formed in an outlet end of the combustion tube. The high-capacity quartz combustion tube is mainly used for determining contents of total sulfur, total nitrogen and total chlorine in petrochemical products, and is capable of remarkably improving the conventional sample size of 10-20 microliters during oil product analysis by 5-10 times to reach 100 microliters, without generating carbon deposition, thereby relatively enhancing a signal during measurement, and remarkably improving detection sensibility of total sulfur, total nitrogen and total chlorine of low content; the detection lower limit can be as low as 0.05 mg/L, and a detection limit can be as low as 0.01 mg/L.
Description
Technical field
The utility model relates to a kind of analysis of oil high power capacity quartz combustion tube, for the analytical test of light-end products total sulfur, total nitrogen, chloride content, belongs to Petrochemical Engineering Analysis technical field.
Background technology
In production, storage, transportation and the use procedure of petroleum chemical industry product, in various oil product chemicals, the existence of sulphur, chlorine, nitrogen element is to cause production equipment burn into catalyst poisoning, oil product chemicals poor stability, feed chemicals and synthesis of chemicals qualification rate is low, engine scuffing, toxic emission exceed standard etc. principal element, and the detection of sulphur, chlorine, nitrogen element content in above-mentioned various product has been become to most important in current petroleum chemical industry, modal analysis project.
At present, total sulfur in various petroleum productss, total nitrogen, total chlorine content test mainly adopt ultraviolet fluorescence method, chemoluminescence method and microcoulomb method, these methods all must be first make sample generation oxidizing fire in being heated to the quartz combustion tube of 800～1100 ℃, be converted into detectable sulphur, chlorine, nitrogen, then detect.When there is combustion reaction, the structural design of quartz combustion tube directly affects the maximum sample size that instrument allows.The quartz combustion tube ubiquity using on Vehicles Collected from Market the problem that sample is short at burning intraductal retention time, sample size is little, general sample size is all at 10～20 microlitres, sample size slightly greatly easily causes incomplete combustion and forms carbon distribution, thereby cause that light path is polluted, pollute sample chamber, detecting device pollutes and electrolytic cell pollutes, deal with very trouble, when carbon distribution is serious, even cause instrument to move, directly scrap.Due to the impact of carbon distribution, directly limited the lifting of sample size, thereby limited the further lifting of precision, accuracy, detection lower limit and the detectability of total sulfur, total nitrogen, chloride content inspection time study method.
Utility model content
The purpose of this utility model is to overcome weak point of the prior art, a kind of effective solution carbon distribution problem is provided, significantly improve sample size, fundamentally promote the analysis of oil high power capacity quartz combustion tube that detects precision, accuracy, detection lower limit and detectability.
The technical solution of the utility model is: a kind of analysis of oil high power capacity quartz combustion tube, comprise body, firing chamber, be positioned at the charging aperture of body entrance point, carrier gas inlet and oxygen intake and the mixed gas outlet that is positioned at body endpiece, its improvements are that described firing chamber has two, near the first firing chamber of entrance point and the second firing chamber of close endpiece, between two firing chambers, there is dividing plate, in described the first firing chamber, be provided with the carrier gas economizer bank being connected with carrier gas inlet, and be provided with the oxygen preheat pipe being connected with oxygen intake, the endpiece of carrier gas economizer bank and oxygen preheat pipe is all near body entrance point, in described the second firing chamber, be provided with the combustion tube being connected with the first firing chamber, the endpiece of body is also provided with blowback oxygen intake.
Described carrier gas economizer bank and oxygen preheat pipe are spiral fashion, stretch into the first inside, firing chamber more than 1/2; Described combustion tube is spiral fashion, and one end of combustion tube is fixed on dividing plate.
The beneficial effects of the utility model are:
1, designed two firing chambers, adjacent two firing chambers are separated by the dividing plate with through hole, and the sample that makes difficult cracking, can enter the second firing chamber and burn away when incomplete in the first combustion chambers burn.
2, injection port is communicated with carrier gas inlet is inner, when sample is after injection port sample introduction, under the carrying of carrier gas, during through spiral fashion carrier gas economizer bank, there is the sufficient time to be preheated, oxygen is in the process of oxygen preheat pipe of flowing through simultaneously, also be preheating to certain temperature, the endpiece of two economizer banks is all near body entrance point, this can meet with the oxygen through preheating with regard to making sample just go out carrier gas economizer bank, there is combustion reaction, thereby be conducive to oil product, have the sufficient time to burn in the first firing chamber, combustion reaction is more complete.
3, in the second burning indoor design spiral helicine combustion tube, make the oil product of burning can enter with larger stroke the second firing chamber after by the first firing chamber, thereby extend its burning time, make various oil products burnings more complete.This design is not only conducive to the analysis of light oil, if carry out a little the transformation of injection port structure, can be used for oil product that viscosity is larger if lubricating oil, mineral oil, white oil, crude oil and solid sample are as the analytical test of pitch, paraffin etc.
4, in the second burning indoor design blowback oxygen intake, regulate the flow of blowback oxygen to make it reach 80-120ml/min, so that the oil product of difficult cracking can be proceeded to burn more fully after entering the second firing chamber by the first firing chamber, this design is not only conducive to the analysis of light oil, if carry out a little the transformation of injection port structure, can be used for oil product that viscosity is larger if lubricating oil, mineral oil, white oil, crude oil and solid sample are as the analytical test of pitch, paraffin etc.
5, adopt the analysis of oil high power capacity quartz combustion tube of the utility model design, because sample combustion reacts completely, can not produce carbon distribution, conventional sample size 10～20 microlitres in the time of can be by analysis of oil significantly improve 5～10 times, reach 100 microlitres, thereby relatively strengthen the signal while measuring, significantly improve the detection sensitivity of low content total sulfur, total nitrogen, total chlorine, detect lower limit and can be low to moderate 0.05mg/L, detectability can be low to moderate 0.01mg/L, is obviously better than the detection lower limit 0.2mg/L of Vehicles Collected from Market instrument.
Accompanying drawing explanation
Fig. 1 is high power capacity quartz combustion tube structural representation for the utility model analysis of oil.
Embodiment
Referring to Fig. 1, the carrier gas inlet 1 of flame tube body 13 entrance points is communicated with injection port 2 is inner, and carrier gas is generally high-purity argon gas or high pure nitrogen, and regulating carrier gas flux is 100～150 ml/min, and injection port 2 use silicagel pad seal.With micro syringe, extract after appropriate sample, by silicagel pad, penetrate injection port 2, under the carrying of carrier gas, sample is in interior first firing chamber 3 that enters after preheating of spiral helicine carrier gas economizer bank 5; Oxygen is through oxygen intake 4 and spiral helicine oxygen preheat pipe 6, enter the first firing chamber, regulating oxygen flow is 150～300 ml/min, oxygen can be preheating to certain temperature, two economizer bank endpiece are all near body entrance point, this can meet with the oxygen through preheating with regard to making sample just go out carrier gas economizer bank 5, and combustion reaction occurs, thereby be conducive to oil product, has the sufficient time to burn in the first firing chamber.
Combination gas after burning is by the dividing plate 12 with through hole 11 and enter the second firing chamber 7 through spiral helicine combustion tube 10, spiral fashion combustion tube makes the oil product of burning can enter with larger stroke the second firing chamber after by the first firing chamber, thereby extend its burning time, make various oil product burnings more complete; Blowback oxygen intake 8 is that secondary supplement oxygen is carried out in the second firing chamber, makes imperfect combustion sample carry out secondary combustion more fully in the second firing chamber, eliminates the existence of carbon distribution completely, and the flow of blowback oxygen is generally adjusted to 80-120ml/min.Sample, under the carrying of carrier gas, enters detecting device via mixed gas outlet 9 and detects in the second firing chamber after abundant secondary combustion.
The utility model, for the analytical test of the various light-end products total sulfurs such as gasoline, diesel oil, kerosene, total nitrogen, chloride content, also can be used for the mensuration of Determination of Trace Sulfur, nitrogen, chlorinity in various Organic chemical products; Injection port is carried out after structure of modification, also can be used for lubricating oil, mineral oil, white oil, the various heavy oil samples of former wet goods and solid sample as the analytical test of total sulfur, total nitrogen, chloride content in pitch, paraffin etc.Have advantages of that sample capacity is high, testing result accuracy is high, precision good, detect lower limit and detectability low.
Claims (3)
1. an analysis of oil high power capacity quartz combustion tube, comprise body, firing chamber, be positioned at the charging aperture of body entrance point, carrier gas inlet and oxygen intake and the mixed gas outlet that is positioned at body endpiece, it is characterized in that described firing chamber has two, near the first firing chamber of entrance point and the second firing chamber of close endpiece, between two firing chambers, there is dividing plate, in described the first firing chamber, be provided with the carrier gas economizer bank being connected with carrier gas inlet, and be provided with the oxygen preheat pipe being connected with oxygen intake, the endpiece of carrier gas economizer bank and oxygen preheat pipe is all near body entrance point, in described the second firing chamber, be provided with the combustion tube being connected with the first firing chamber, the endpiece of body is also provided with blowback oxygen intake.
2. by analysis of oil high power capacity quartz combustion tube described in claim 1, it is characterized in that described carrier gas economizer bank and oxygen preheat pipe are spiral fashion, stretch into the first inside, firing chamber more than 1/2.
3. by analysis of oil high power capacity quartz combustion tube described in claim 1, it is characterized in that described combustion tube is spiral fashion, one end of combustion tube is fixed on dividing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320713543.9U CN203587412U (en) | 2013-11-13 | 2013-11-13 | High-capacity quartz combustion tube for gasoline analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320713543.9U CN203587412U (en) | 2013-11-13 | 2013-11-13 | High-capacity quartz combustion tube for gasoline analysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203587412U true CN203587412U (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320713543.9U Expired - Fee Related CN203587412U (en) | 2013-11-13 | 2013-11-13 | High-capacity quartz combustion tube for gasoline analysis |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604904A (en) * | 2013-11-13 | 2014-02-26 | 江苏东华分析仪器有限公司 | High-capacity quartz combustion tube for oil product analysis |
| CN108169405A (en) * | 2017-12-01 | 2018-06-15 | 宁波出入境检验检疫局检验检疫技术中心 | Oil and the big sample size combustion tube of petroleum chemicals analysis |
| CN114965853A (en) * | 2021-02-20 | 2022-08-30 | 中国石油化工股份有限公司 | Combustible gas combustion reaction device and concentration detection system of hydrogen sulfide in hydrogen |
-
2013
- 2013-11-13 CN CN201320713543.9U patent/CN203587412U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604904A (en) * | 2013-11-13 | 2014-02-26 | 江苏东华分析仪器有限公司 | High-capacity quartz combustion tube for oil product analysis |
| CN108169405A (en) * | 2017-12-01 | 2018-06-15 | 宁波出入境检验检疫局检验检疫技术中心 | Oil and the big sample size combustion tube of petroleum chemicals analysis |
| CN114965853A (en) * | 2021-02-20 | 2022-08-30 | 中国石油化工股份有限公司 | Combustible gas combustion reaction device and concentration detection system of hydrogen sulfide in hydrogen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20141113 |
|
| EXPY | Termination of patent right or utility model |