CN105424875A - Straight type adsorption pipe for dynamic adsorption device - Google Patents
Straight type adsorption pipe for dynamic adsorption device Download PDFInfo
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- CN105424875A CN105424875A CN201410445268.6A CN201410445268A CN105424875A CN 105424875 A CN105424875 A CN 105424875A CN 201410445268 A CN201410445268 A CN 201410445268A CN 105424875 A CN105424875 A CN 105424875A
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Abstract
The present invention provides a straight type adsorption pipe for a dynamic adsorption device. According to the present invention, the adsorption pipe is made from a quartz material, the upper end and the lower end of the adsorption pipe are respectively provided with a diameter change adapter, the upper end and the lower end of the adsorption pipe are sealed through O rings, the diameter change adapter on the lower end of the adsorption pipe is connected to a reaction gas outlet pipe, the diameter change adapter on the upper end of the adsorption pipe is connected to a three-way adapter, the right end is connected to a reaction gas inlet, a straight pipe is fixed on the upper end, the upper end of the straight pipe has an outer thread structure so as to be used for fixing a thermocouple bushing, the thermocouple bushing sequentially penetrates through the three-way adapter and diameter change adapter on the upper end of the reaction pipe through the port on the upper end of the three-way adapter and then is inserted into the sample inside the reaction pipe, a metal lining pipe having a certain length is arranged inside the reaction pipe, a layer of silica wool having a certain thickness is placed on the lining pipe, and a catalyst sample is placed on the silica wool; and the straight type adsorption pipe has characteristics of simple structure, easy disassembly, easy washing and easy sample replacement so as to be widely used in dynamic adsorption devices and provide high practical value and application prospects.
Description
Technical field
The present invention relates in general to the instrument field that catalyst performance characterizes, and is specifically to provide a kind of straight adsorption tube on Dynamic Adsorption instrument.
Background technology
Dynamic Adsorption instrument is a kind of characterization device for Study of Catalyst adsorption state and performance of routine, general employing thermal conductivity detector (TCD), by the temperature programme process to catalyst sample in temperature programme stove, and thermal conductivity detector (TCD) is to the Real-Time Monitoring of product, can multiple character such as the oxidation-reduction quality of catalyst sample, surface acidic-basic property, surface species structure, adsorptive power, adsorbance, chemical specific surface area, dispersion degree and granularity and parameter be characterized and be measured.Concrete assay method has temperature programmed reduction (TPR), temperature programmed oxidation (TPO), temperature programmed desorption (TPD), temperature programmed surface reaction (TPSR), pulse titration (PulseTitration) etc.
The adsorption tube that in Dynamic Adsorption instrument, general use is straight or U-shaped, this is main relevant to the structure of stove.Merck & Co., Inc of the U.S. and the U-shaped adsorption tube of the many employings of Kang Ta company, but U-shaped adsorption tube ubiquity solid easily remains, the problems such as cleaning difficulty, and also there is certain problem in design in straight adsorption tube, such as application number is: mention a kind of straight adsorption tube in the patent of invention " straight tube for chemical adsorption instrument and sample charging device thereof " of 201210014851.2, but there is dress sample difficulty in this adsorption tube, the easy landing of thermopair, thermocouple sheath is the problem in the majority such as broken and poorly sealed easily, be not easy to the use of user, therefore provide a kind of structure simple, the Dynamic Adsorption instrument being convenient to change and clean seems extremely important with straight adsorption tube.
Summary of the invention
It is simple that the present invention have devised a kind of structure, the straight adsorption tube of Dynamic Adsorption instrument easy to use, and consider Problems existing in design emphatically.Such as to consider that dismounting is convenient at adsorption tube two ends, comprise thermopair and two ends pipeline, consider that catalyst sample is filled out and put, therefore special design be carried out to the structure of this adsorption tube.Specifically, in the present invention, adsorption tube is quartzy material.There is reducing adapter at the upper and lower two ends of adsorption tube, are sealed adsorption tube upper and lower side by O circle.The reducing adapter coupled reaction gas outlet of adsorption tube lower end, and the reducing adapter of adsorption tube upper end is connected with threeway adapter, threeway adapter right-hand member is connected with reaction gas inlet, its upper end is then fixed wtih a straight tube, this straight tube upper end has external thread structure, and for stationary heat thermowell, thermocouple sheath is by threeway adapter upper end port, pass the reducing adapter of threeway adapter and reaction tube upper end successively, in intercalation reaction pipe in sample.Be provided with the metal liner of certain length in reaction tube, bushing pipe placed the certain thickness silica wool of one deck, silica wool places catalyst sample again.In course of reaction, gas enters reaction tube from threeway adapter right-hand member, and after catalyst reaction, product flows out from the lower end outlet of the reducing adapter bottom reaction tube.
Be described in detail below in conjunction with accompanying drawing
Fig. 1 is the structural representation of Dynamic Adsorption instrument with straight adsorption tube of a kind of embodiment of the present invention;
Fig. 2 is the structural representation of Dynamic Adsorption instrument with straight adsorption tube of another kind of embodiment of the present invention.
As the structural representation of Dynamic Adsorption instrument with straight adsorption tube that Fig. 1 is a kind of embodiment of the present invention.In the present invention, the straight adsorption tube of Dynamic Adsorption instrument mainly comprises straight adsorption tube 1, bushing pipe 2, thermocouple sheath 26 (inside having thermopair 27) and a web member such as the reducing adapter 5,10 be connected with adsorption tube upper and lower side and threeway 16, and wherein the external diameter of adsorption tube 1 is generally 6 ~ 18mm.The lower end of adsorption tube 1 is connected with reducing adapter 5, and reducing adapter 5 upper end is external thread structure, is fixed in the groove of reducing adapter 5 adsorption tube 1 lower end by inner seal liner 8 with the female nut 6 of tool.Reducing adapter 5 lower end is external thread structure, is fixed by adsorbed gas outlet 29 by inner seal liner 9 with the female nut 7 of tool.Similarly, adsorption tube 1 upper end is connected with reducing adapter 10, and reducing adapter 10 upper end is external thread structure, is fixed in the groove of reducing adapter 10 adsorption tube 1 upper end by inner seal liner 13 with the female nut 11 of tool.Reducing adapter 10 upper end is external thread structure, interior insertion metal tube 15, is fixed by this metal tube 15 by inner seal liner 14 with the female nut 12 of tool.The other end of this metal tube 15 is then fixed on the lower end of threeway adapter 16, and the lower end of threeway adapter 16 is external thread structure, is fixed metal tube 15 upper end by inner seal liner 20 with the female nut 17 of tool.Same threeway adapter 16 upper end and right-hand member are external thread structure, and straight tube 23 lower end and adsorbed gas induction pipe 28 are fixed by inner seal liner 21 and 22 by female nut 18 and 19 with tool respectively.This straight tube 23 upper end has external thread structure, is fixed by the thermocouple sheath 26 of inner seal liner 25 by insertion with the female nut 24 of tool.Wherein inner seal liner 8,9,13,14,20 ~ 22 and 25 can enclose for O, rubber blanket or metal double card cover, and generally recommend 9,14,20 ~ 22 to use stainless steel double card cover, 8 and 13 use O circle.Thermocouple sheath 26 is by threeway adapter 16 upper end port, pass the reducing adapter 10 of threeway adapter 16 and adsorption tube 1 upper end successively, to insert in adsorption tube 1 in sample 4, in thermocouple sheath 26, insert thermopair 27, can the temperature of sample 4 in the real time measure adsorption process.Be provided with the bushing pipe 2 of certain length in adsorption tube 1, bushing pipe 2 is recommended to select quartzy material.Bushing pipe 2 is placed the certain thickness silica wool 3 of one deck, silica wool 3 places catalyst sample 4 again.Threeway adapter 16 right-hand member is connected with reaction gas inlet pipe 28, and the lower end of reducing adapter 5 is connected with reaction gas outlet 29.In adsorption process, gas enters adsorption tube 1 from the reaction gas inlet pipe 28 of threeway adapter 16 right-hand member, and after catalyzer 4 adsorbs or reacts, product flows out from the reaction gas outlet 29 of reducing adapter 5 lower end bottom adsorption tube 1.
When installing adsorption tube 1, in advance threeway adapter 16 part is installed, comprise the connected pipeline (15,23,28) of threeway adapter 16 upper end, lower end and right-hand member and nut (17,18,19,24), thermocouple sheath 26 is inserted and secured in threeway adapter 16 through hole simultaneously.After adsorption tube 1 lower end is connected with reducing adapter 5, bushing pipe 2, silica wool 3 and catalyst sample 4 is loaded successively in adsorption tube 1, reducing adapter 10 is connected again in adsorption tube 1 upper end, and connect with the T-valve part installed, finally reaction gas inlet pipe 28 is connected with the lower end of reducing adapter 5 with threeway adapter 16 right-hand member respectively with reaction gas outlet 29, namely completes the installation of adsorption tube 1.
When dismantling adsorption tube 1, in advance reaction gas inlet pipe 28 is connected with the lower end of reducing adapter 5 with threeway adapter 16 right-hand member respectively with reaction gas outlet 29, open the nut 12 of reducing adapter 10 upper end simultaneously, the T-valve part installed can be extracted from adsorption tube 1, pipe 1 upon adsorption is taken out and after lowering the temperature from absorption stove (not shown), can carry out adsorption tube 1 and clean and the filling work of fresh sample.
As the structural representation of Dynamic Adsorption instrument with straight adsorption tube that Fig. 2 is another kind of embodiment of the present invention.In the present invention, the straight adsorption tube of Dynamic Adsorption instrument mainly comprises straight adsorption tube 101, bushing pipe 102, thermopair 126 and a web member such as the reducing adapter 105,110 be connected with adsorption tube upper and lower side and threeway 116, and wherein the external diameter of adsorption tube 101 is generally 6 ~ 18mm.The lower end of adsorption tube 101 is connected with reducing adapter 105, and reducing adapter 105 upper end is external thread structure, is fixed in the groove of reducing adapter 105 adsorption tube 101 lower end by inner seal liner 108 with the female nut 106 of tool.Reducing adapter 105 lower end is external thread structure, is fixed by adsorbed gas outlet 128 by inner seal liner 109 with the female nut 107 of tool.Similarly, adsorption tube 101 upper end is connected with reducing adapter 110, and reducing adapter 110 upper end is external thread structure, is fixed in the groove of reducing adapter 110 adsorption tube 101 upper end by inner seal liner 113 with the female nut 111 of tool.Reducing adapter 110 upper end is external thread structure, interior insertion metal tube 115, is fixed by this metal tube 115 by inner seal liner 114 with the female nut 112 of tool.The other end of this metal tube 115 is then fixed on the lower end of threeway adapter 116, and the lower end of threeway adapter 116 is external thread structure, is fixed metal tube 115 upper end by inner seal liner 120 with the female nut 117 of tool.Same threeway adapter 116 upper end and right-hand member are external thread structure, and straight tube 123 lower end and adsorbed gas induction pipe 128 are fixed by inner seal liner 121 and 122 by female nut 118 and 119 with tool respectively.This straight tube 123 upper end has external thread structure, is fixed by the thermopair 126 of inner seal liner 125 by insertion with the female nut 124 of tool.Wherein inner seal liner 108,109,113,114,120 ~ 122 and 125 can enclose for O, rubber blanket or metal double card cover, and generally recommend 109,114,120 ~ 122 to use stainless steel double card cover, 108 and 113 use O circle.Thermopair 126 is by threeway adapter 116 upper end port, pass the reducing adapter 110 of threeway adapter 116 and adsorption tube 101 upper end successively, insert in adsorption tube 101 in sample 104, therefore thermopair 126 can the temperature of sample 104 in the real time measure adsorption process.Be provided with the bushing pipe 102 of certain length in adsorption tube 101, bushing pipe 102 is recommended to select quartzy material.Bushing pipe 102 is placed the certain thickness silica wool 103 of one deck, silica wool 103 places catalyst sample 104 again.Threeway adapter 116 right-hand member is connected with reaction gas inlet pipe 127, and the lower end of reducing adapter 105 is connected with reaction gas outlet 128.In adsorption process, gas enters adsorption tube 101 from the reaction gas inlet pipe 127 of threeway adapter 116 right-hand member, and after catalyzer 104 adsorbs or reacts, product flows out from the reaction gas outlet 128 of reducing adapter 105 lower end bottom adsorption tube 101.
When installing adsorption tube 101, in advance threeway adapter 116 part is installed, comprise the connected pipeline (115,123,127) of threeway adapter 116 upper end, lower end and right-hand member and nut (117,118,119,124), thermopair 126 is inserted and secured in threeway adapter 116 through hole simultaneously.After adsorption tube 101 lower end is connected with reducing adapter 105, bushing pipe 102, silica wool 103 and catalyst sample 104 is loaded successively in adsorption tube 1, reducing adapter 110 is connected again in adsorption tube 101 upper end, and connect with the T-valve part installed, finally reaction gas inlet pipe 127 is connected with the lower end of reducing adapter 105 with threeway adapter 116 right-hand member respectively with reaction gas outlet 128, namely completes the installation of adsorption tube 101.
When dismantling adsorption tube 101, in advance reaction gas inlet pipe 127 is connected with the lower end of reducing adapter 105 with threeway adapter 116 right-hand member respectively with reaction gas outlet 128, open the nut 112 of reducing adapter 110 upper end simultaneously, the T-valve part installed can be extracted from adsorption tube 101, pipe 101 upon adsorption is taken out and after lowering the temperature from absorption stove (not shown), can carry out adsorption tube 101 and clean and the filling work of fresh sample.
Can see, this adsorption tube structure is simple, is convenient to dismounting, and be easy to cleaning and change sample, therefore this adsorption tube can be widely used in Dynamic Adsorption instrument, has higher practical value and application prospect.
Claims (2)
1. the straight adsorption tube of Dynamic Adsorption instrument.
2., according to the straight adsorption tube of Dynamic Adsorption instrument according to claim 1, it is characterized in that in its present invention, adsorption tube is quartzy material.There is reducing adapter at the upper and lower two ends of adsorption tube, are sealed adsorption tube upper and lower side by O circle.The reducing adapter coupled reaction gas outlet of adsorption tube lower end, and the reducing adapter of adsorption tube upper end is connected with threeway adapter, threeway adapter right-hand member is connected with reaction gas inlet, its upper end is then fixed wtih a straight tube, this straight tube upper end has external thread structure, and for stationary heat thermowell, thermocouple sheath is by threeway adapter upper end port, pass the reducing adapter of threeway adapter and reaction tube upper end successively, in intercalation reaction pipe in sample.Be provided with the metal liner of certain length in reaction tube, bushing pipe placed the certain thickness silica wool of one deck, silica wool places catalyst sample again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410445268.6A CN105424875B (en) | 2014-09-03 | 2014-09-03 | The straight adsorption tube of Dynamic Adsorption instrument |
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| CN201410445268.6A CN105424875B (en) | 2014-09-03 | 2014-09-03 | The straight adsorption tube of Dynamic Adsorption instrument |
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| CN105424875A true CN105424875A (en) | 2016-03-23 |
| CN105424875B CN105424875B (en) | 2019-01-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763587A (en) * | 2020-12-03 | 2021-05-07 | 清华大学 | Gas chromatography-microreactor coupling device and analysis method |
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| CN201697726U (en) * | 2010-06-18 | 2011-01-05 | 武汉钢铁(集团)公司 | Thermocouple fixing device |
| CN201780284U (en) * | 2010-07-09 | 2011-03-30 | 神华集团有限责任公司 | Device for catalyst evaluation |
| CN102053163A (en) * | 2009-10-29 | 2011-05-11 | 中国石油化工股份有限公司 | In-situ analysis system for catalytic reaction (CR) pulses |
| CN102590438A (en) * | 2012-01-18 | 2012-07-18 | 天津市先权工贸发展有限公司 | Straight tube for chemical adsorption instrument and sample loader thereof |
| CN203711000U (en) * | 2014-01-15 | 2014-07-16 | 天津市先权工贸发展有限公司 | Reactor with inbuilt quartz tube |
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2014
- 2014-09-03 CN CN201410445268.6A patent/CN105424875B/en active Active
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| CN1490620A (en) * | 2003-08-26 | 2004-04-21 | 上海师范大学 | Catalyst surface-characteristic comprehensive measuring device and application thereof |
| JP2009248009A (en) * | 2008-04-08 | 2009-10-29 | Hitachi Zosen Corp | Method for producing noble metal-supported catalyst |
| CN102053163A (en) * | 2009-10-29 | 2011-05-11 | 中国石油化工股份有限公司 | In-situ analysis system for catalytic reaction (CR) pulses |
| CN201697726U (en) * | 2010-06-18 | 2011-01-05 | 武汉钢铁(集团)公司 | Thermocouple fixing device |
| CN101858901A (en) * | 2010-07-07 | 2010-10-13 | 中国汽车技术研究中心 | System and method for testing activity of vehicle exhaust purification catalytic material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112763587A (en) * | 2020-12-03 | 2021-05-07 | 清华大学 | Gas chromatography-microreactor coupling device and analysis method |
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