Claims
- 1. An apparatus for treating an exhaust gas from a light oil combustion apparatus which comprises:
- a muffler connected with the light oil combustion apparatus,
- an exhaust pipe containing an exhaust gas introducing and exhausting pipe provided with multiple gas discharging small holes and a plurality of gas escape ports and a filter pipe, and
- a gas outlet pipe connected with the exhaust pipe,
- said filter pipe being composed of an inner layer filter pipe and an outer layer filter pipe, an activated carbon packed in the space between the inner layer filter pipe and the outer layer filter pipe, and a blind plate blocking one end of the filter pipe, wherein said activated carbon comprises carbon microcrystals irregularly arranged and difficultly graphitizable carbon, said difficultly graphitizable carbon including crosslinking lattices in the gaps among carbon microcrystals and said activated carbon having pencil hardness of from B to 6B, pore size of 100-400 .ANG., specific surface area of 150-500 m.sup.2 /g, pore volume of 1.3-5.0 ml/g and CEC of 8-13, and
- the exhaust gas introducing and exhausting pipe being provided in the inner space of the inner layer filter pipe.
- 2. The apparatus according to claim 1 in which the exhaust gas introducing and exhausting pipe comprises
- a perforated pipe portion having multiple small holes for passing gas at the pipe wall and a rear end lid having multiple small holes for passing gas, and
- a pipe portion provided with a plurality of gas escape ports at the pipe wall near the end portion and a blocking plate at the top end portion.
- 3. The apparatus according to claim 1 in which the activated carbon is produced by burning waste tires.
- 4. An apparatus according to claim 1, wherein said muffler is adapted to connect to a flue of a diesel engine.
- 5. An apparatus according to claim 1, wherein said inner layer and outer layer filter pipes are independently comprised of a mesh metal net.
- 6. The apparatus according to claim 1 wherein said activated carbon has pencil hardness of from 2B to 4B, pore size 200-350 .ANG., specific surface area 200-400 m.sup.2 /g, and pore volume 1.4-3.0 ml/g.
- 7. The apparatus according to claim 1 wherein said activated carbon has CEC of 9-12.
Priority Claims (2)
Number |
Date |
Country |
Kind |
2-325036 |
Nov 1990 |
JPX |
|
3-303889 |
Oct 1991 |
JPX |
|
CROSS-REFERENCE TO RELATED APPLICATION
This is a continuation of application Ser. No. 08/480,209 filed Jun. 7, 1995, now abandoned, which is a continuation of application Ser. No. 08/242,022 filed May 11, 1994, now U.S. Pat. No. 5,494,500 which is a continuation of application Ser. No. 08/108,174 filed Aug. 17, 1993, now abandoned, which is a continuation of application Ser. No. 07/796,262 filed Nov. 20, 1991, now abandoned, which is a continuation-in-part of application Ser. No. 07/669,917 filed Mar. 15, 1991, which is now U.S. Pat. No. 5,186,914.
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Entry |
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Continuations (4)
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Number |
Date |
Country |
Parent |
480209 |
Jun 1995 |
|
Parent |
242022 |
May 1994 |
|
Parent |
108174 |
Aug 1993 |
|
Parent |
796262 |
Nov 1991 |
|
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
669917 |
Mar 1991 |
|