Enhanced PFC waste-gas treating system

• US 20060013745A1
• Filed: 07/16/2004
• Published: 01/19/2006
• Est. Priority Date: 07/16/2004
• Status: Abandoned Application

• Current Assignee: Yi-Rong Chen
• Original Assignee: Yi-Rong Chen
• Inventors: Chen, Yi-Rong
• Application Number:
  US10/892,184
• Publication Number:
  US 20060013745A1
• Time in Patent Office: Days
• US Class Current: 422/168
• CPC Class Codes: B01D 2257/2027 Fluorine
• CPC Class Codes: B01D 2257/2047 Hydrofluoric acid
• CPC Class Codes: B01D 2257/2066 Fluorine
• CPC Class Codes: B01D 53/8659 Removing halogens or halogen compounds
• CPC Class Codes: B01D 53/8662 Organic halogen compounds
• CPC Class Codes: Y02C 20/30 of perfluorocarbons [PFC], hydrofluorocarbons [HFC] or sulfur hexafluoride [SF6]

Abstract

The waste-gas treating system is designed for treating the waste gas created in general semiconductor processing in production; the waste-gas treating system mainly is provided at one side of a waste-gas treating equipment, and contains therein mainly a condensing tube, a catalyst treating unit, a water treating unit and water collecting tanks; the catalyst treating unit decomposes toxic gases such as per-fluorine compound (PFC) etc. that are remained in the waste-gas treating equipment and are unable to be dealt with to thereby form non-toxic gases, and does water treating on the byproduct from dissociation, thus a function of lowering temperature can be acquired, then the gases are exhausted to the atmosphere to perform secondarily treating to reduce the content of PFC in the atmosphere and to reduce damage of the hothouse effect.

Claims

1. An enhanced PFC waste-gas treating system provided at one side of a waste-gas treating equipment, said system comprises:

a machine main body, said machine main body is provided exteriorly thereof with a gas inlet and a gas exhausting tube;

said gas inlet is connected with said waste-gas treating equipment;

said gas exhausting tube is connected with a gas drawing pump unit to exhaust gases in said machine main body;

said machine main body is provided therein further with two water collecting tanks, a front-section condensing tube, a catalyst treating unit, a water treating unit and a rear-section condensing tube;

wherein a first water collecting tank is provided with said front-section condensing tube and said catalyst treating unit, a second water collecting tank is provided with said water treating unit and said rear-section condensing tube;

said catalyst treating unit and said water treating unit are connected with each other via a pipeline, said front-section condensing tube is connected with said gas inlet exteriorly of said machine main body, while said rear-section condensing tube is connected with said gas exhausting tube also exteriorly of said machine main body.

2. The enhanced PFC waste-gas treating system as claimed in claim 1, wherein said catalyst treating unit is provided therein with a catalyst tube.

3. The enhanced PFC waste-gas treating system as claimed in claim 1, wherein said water treating unit is provided therein with a water spraying pipe and an adsorption element.

4. The enhanced PFC waste-gas treating system as claimed in claim 3, wherein said water treating unit is divided into an upper and a lower layer, each of said layers is provided with a set of said water spraying pipe and said adsorption element.

5. The enhanced PFC waste-gas treating system as claimed in claim 3, wherein said adsorption element is made of ceramic material.

6. The enhanced PFC waste-gas treating system as claimed in claim 1, wherein said first water collecting tank and said second water collecting tank are connected with said waste-gas treating equipment each through a guiding tube to lead collected water into said waste-gas treating equipment.

7. The enhanced PFC waste-gas treating system as claimed in claim 1, wherein said gas inlet and said gas exhausting tube are connected therebetween with a pneumatic valve;

while said gas inlet and said front-section condensing tube, said gas exhausting tube and said rear-section condensing tube are both connected therebetween with a manually valve, thereby, when the interior of said machine main body is out of order or when it is in maintenance or changing said catalyst tube, passageways between said gas inlet and said front-section condensing tube as well as between said gas exhausting tube and said rear-section condensing tube are cut short by means of said manually valve, gases are forced to be led to said gas exhausting tube via said pneumatic valve for exhausting to avoid damage of said interior of said machine main body.

8. The enhanced PFC waste-gas treating system as claimed in claim 1, wherein said gas inlet is provided on an outer surface thereof with a pressure detector to detect inner pressure of said gas inlet.

9. The enhanced PFC waste-gas treating system as claimed in claim 1, wherein said catalyst treating unit is provided on an outer surface thereof with a temperature sensor to detect inner temperature of said catalyst treating unit.

10. The enhanced PFC waste-gas treating system as claimed in claim 1, wherein said rear-section condensing tube is provided on an outer surface thereof with a gas detector to detect whether there are residual gases containing per-fluorine compound (PFC) being not completely dissociated.

11. The enhanced PFC waste-gas treating system as claimed in claim 1, wherein a control unit is provided on one side of said machine main body to control components in said machine main body.

12. The enhanced PFC waste-gas treating system as claimed in claim 11, wherein said control unit is further provided with a plurality of control buttons.