SU329467A1 - METHOD FOR SEPARATING THE COMPONENTS OF A GAS MIXTURE ON A CHROMATOGRAPHIC COLUMN - Google Patents
METHOD FOR SEPARATING THE COMPONENTS OF A GAS MIXTURE ON A CHROMATOGRAPHIC COLUMNInfo
- Publication number
- SU329467A1 SU329467A1 SU1465455A SU1465455A SU329467A1 SU 329467 A1 SU329467 A1 SU 329467A1 SU 1465455 A SU1465455 A SU 1465455A SU 1465455 A SU1465455 A SU 1465455A SU 329467 A1 SU329467 A1 SU 329467A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- components
- separating
- chromatographic column
- gas mixture
- column
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title description 2
- 239000007789 gas Substances 0.000 description 3
- 239000012159 carrier gas Substances 0.000 description 2
- 230000005526 G1 to G0 transition Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Description
Газохроматографические колонки большого диаметра неэффективны из-за возникновени радиально-симметричного профил скоростей газа-носител и компонента по сечению колонки .Large diameter gas chromatographic columns are inefficient due to the occurrence of a radially symmetric velocity profile of the carrier gas and the component over the column section.
Известны способы разделени компонентов на хроматографической колонке путем выравнивани этого профил с помощью перегородок или колец фильтровальной бумаги, смоченной .неподвижной фазой. Однако при этом лишь частично выравниваетс профиль скоростей и немного увеличиваетс эффективность.Methods for separating components on a chromatographic column are known by aligning this profile with partitions or filter paper rings moistened with a stationary phase. However, the velocity profile is only partially aligned and the efficiency is slightly increased.
Сущность предлагаемого способа заключаетс в том, что дл разделени компонентов на хроматографической колонке, с целью выравнивани лрофил скоростей, создают разность температур стенки и центра колонки.The essence of the proposed method lies in the fact that in order to separate the components on a chromatographic column, in order to equalize the lrophil velocity, the temperature difference between the wall and the center of the column is created.
Поперечный температурный градиент распределен по колонке таким образом, чтобы в участках п 1перечного сечени с высокой скоростью газа-носител поддерживалась более низка температура. В результате выравниваетс скорость перемещени компонента по сечению колонки.The transverse temperature gradient is distributed over the column in such a way that a lower temperature is maintained at high velocity of the carrier gas in sections 1 of the cross section. As a result, the speed of movement of the component over the column section is aligned.
фронту перемещени компонента, определ ют по формуле:the front of movement of the component is determined by the formula:
ДГт QIRT DGT QIRT
где Q - теплота сорбции, R - газова посто нна , Т - средн температура колонны. В большинстве случаев скорость перемещени компонента увеличиваетс к центру колс нки , поэтому температура должна уменьшатьс в этом же направлении.where Q is the heat of sorption, R is the gas constant, T is the average temperature of the column. In most cases, the speed of movement of the component increases towards the center of the wheel, so the temperature should decrease in the same direction.
На чертеже приведен экспериментально полученный график зависимости высоты Я эквивалентной теоретической тарелки от разностиThe drawing shows an experimentally obtained plot of the height I of the equivalent theoretical plate as a function of the difference
температур стенки и центра колонки диаметром 75 мм и длиной 1 м. При разности температур около 2,5°С эффективность достигла максимума и была значительно выше (--40%), чем прп .The temperature of the wall and center of the column was 75 mm in diameter and 1 m long. With a temperature difference of about 2.5 ° C, the efficiency reached a maximum and was significantly higher (-40%) than the prp.
Предмет изобретени Subject invention
Способ разделени компонентов газовой смеси на хроматографической колонке, отличающийс тем, что, с целью выравнивани профил распределени скоростей по сечению колонки, в процессе разделени создают разность температур стенки и центра колонки изменением температуры стенки во времени.A method of separating gas mixture components on a chromatographic column, characterized in that, in order to equalize the velocity distribution profile over the column cross section, the separation process creates a difference in wall and center temperatures by varying the wall temperature over time.
012345 jFZfltf t:C012345 jFZfltf t: C
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU329467A1 true SU329467A1 (en) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4982597A (en) * | 1988-06-07 | 1991-01-08 | Hewlett-Packard Company | Restrictor heating in supercritical fluid chromatography |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4982597A (en) * | 1988-06-07 | 1991-01-08 | Hewlett-Packard Company | Restrictor heating in supercritical fluid chromatography |
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