Apparatus for conducting a gas mixture in a closed circuit

Details Apparatus for conducting a gas mixture in a closed circuit Apparatus for conducting a gas mixture in a closed circuit

1985-03-27

1988-06-28

Terapane, John F.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

With means applying electromagnetic wave energy or...

204DIG11, 250423P, 250437, 422186, B01J 1908

Patent

active

047537787

DESCRIPTION:

BRIEF SUMMARY
The present invention relates to an apparatus for conducting a molecular gas or gas mixture containing at least one molecular component, in a closed circuit, in particular for generating processes in the corresponding gas or gas mixture involving its partial ionization and the stimulation of molecules to vibrate in the corresponding gas component.
Processes which take place in molecular gases or gas mixtures containing at least one molecular component which are characterized by partial ionization and the stimulation of molecules to vibrate substantially serve the following three purposes: the initiation and execution of plasma-chemical reactions, isotope separation and the production of a laser-active state.
It is sufficiently well-known for all three areas of application to carry out such processes in open systems, i.e. systems in which the gas flows through the reaction zone only once (see e.g. German Offenlegungsschrift No. 26 51 306; Proc. IEEE, 2(1974)1, p. 4 ff; Angew. Chemie, 84. Jahrg. (1972) 18, pp. 876 ff; IEEE Transactions on Plasma Science, PS-2(1974), p. 297-307; J. Microwave Power, 10(1975)4, p. 433-440; Sov. Phys. Dokl. 23(1978)1, p. 44-46; J. Microwave Power, 12(1977)2, p. 155-166). In the laser field, systems having a closed gas circuit even dominate; these systems are gas-dynamic or gas transport lasers (see e.g. Appl. Phys. 22 (1980), pp. 421-427; Appl. Phys. Letters 15 (1969)3, p. 91-93; ALAA-Paper 72-723 (1972); U.S. Pat. No. 4,096,449).
In the cases of plasma chemistry and isotope separation small reaction yields are generally obtained using an open system since only part of the starting substance ever participates in the desired reaction process.
In the case of the laser, however, the disadvantage of the stated apparatus is that one must make use of either passive feedbacks with a large cross-section to reduce the frictional losses in the flow, or elaborate pump systems for circulating the gas to overcome these frictional losses. The former leads to a heavy construction with a large volume, the latter to unfavorable overall efficiency.
The invention is based on the problem of increasing the yield with respect to the quantity of the starting substance, in the case of use in plasma chemistry and isotope separation; of combining a compact construction with high overall efficiency in the case of use as a laser.
The problem is solved according to the invention by the following features: two similarly designed flow channels having a preferably rectangular cross-section are arranged with their broadsides directly beside each other or are integrated constructionally, and are connected with each other at their adjacent ends by two apparatus for circulating gas, in such a way that the gas flows through them in opposite directions and electrodes are set in partial areas of each channel electrically insulated from the channel walls, the electrode closer to the other channel in each case being electrically connected, or constructionally identical, to the corresponding electrode of this other channel.
It is further expedient when the apparatus is used for the purposes of isotope separation and when it is used as a gas-dynamic or gas-transport laser, for openings which allow for electromagnetic radiation, preferably laser radiation, to pass through substantially at right angles to the direction of flow, to be provided in the narrow sides of the two channels.
It is further advantageous for the supply or removal of gas when the apparatus is used for the purposes of plasma chemistry and isotope separation, for a plurality of openings having a small diameter to be provided in the broadsides of the channels, or in the electrodes which form part of these broadsides.
It is also advantageous in the case of use as a gas-dynamic or gas-transport laser for the two channels to be connected with each other by a plurality of openings having a small diameter in the two broadsides facing each other.
It is advantageous in a number of applications, in the interests of controlling the residence time of the gas in the

REFERENCES:
patent: 3801791 (1974-04-01), Schaefer
patent: 4043886 (1977-08-01), Bieker et al.
patent: 4097384 (1978-06-01), Coleman et al.
patent: 4119509 (1978-10-01), Szoke
patent: 4563258 (1986-01-01), Bridges

Affiliated with

Also associated with

Rating

Apparatus for conducting a gas mixture in a closed circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for conducting a gas mixture in a closed circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for conducting a gas mixture in a closed circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1913635