Pretreatment device for gas analysis that enables stable removal of impurity gas

Keyword
Cryogen, gas analysis, pretreatment, solidification temperature, collection
Information no
0459
Appeal point
Pretreatment device for gas analysis that can stably collect and remove impurity gas without using cryogen
Summary
The present invention is a pretreatment device for gas analysis that enables pretreatment for gas analysis without using a cryogen. The gas analysis pretreatment device separates the gas having the lowest solidification temperature from the plurality of types of gas contained in the mixed gas as the gas to be analyzed and collects other types of gas as impurity gas, by utilizing the following configuration.
1) The gas analysis pretreatment apparatus includes a gas flow path having a collection portion that can be cooled to a plurality of stages of temperatures.
2) The gas analysis pretreatment device is equipped with a cooling device that cools the collection portion of the gas flow path to a plurality of temperatures.
3) The gas analysis pretreatment device includes a gas flow path connection switching means. The switching means connects the gas flow path to a vacuum pump when the gas flow path is evacuated, and connects the gas flow path to the gas generation source when introducing the mixed gas into the gas flow path to collect the gas, and connects the gas flow path to the gas analyzer when supplying the gas separated in the section to the gas analyzer.
4) The gas analysis pretreatment device includes a heat conductor surrounding the outer periphery of the collection portion.
5) The cooling device includes a contact cooling unit, and the contact cooling unit is in contact with the heat conductor. The cooling device has a temperature adjustment function of uniformly cooling the collection portion to an arbitrary set temperature by using electric energy.
Schematic image
Application
Gas analysis
Relational patent
Item name
:
Pretreatment device for gas analysis
Filing date
:
2015-09-08
Inventor(s)
Saburo Sakai