Smokeless pyrolysis furnace with ramp and soak temperature control system
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0881953
(1986-07-03)
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발명자
/ 주소 |
- Koptis Robert A. (15963 Remora Blvd. Brookpark OH 44142) Heran Robert F. (1842 Donna Dr. Westlake OH 44145)
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인용정보 |
피인용 횟수 :
6 인용 특허 :
0 |
초록
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A batch-type pyrolysis furnace fired by a main heat source such as a gas burner or an electric heating coil in combination with an afterburner to burn volatiles generated in the furnace\s main chamber, is operated to incinerate high-polymer loads smokelessy, yet is effectively safeguarded from explo
A batch-type pyrolysis furnace fired by a main heat source such as a gas burner or an electric heating coil in combination with an afterburner to burn volatiles generated in the furnace\s main chamber, is operated to incinerate high-polymer loads smokelessy, yet is effectively safeguarded from explosions. A single thermocouple (throat TC) senses the instantaneous temperature in the throat of the furnace and in cooperation with a programmable controller, maintains a preselected ramp and soak temperature profile over the entire burn cycle. When the temperature required by the profile is exceeded, a single water spray actuated by a signal from the PC lowers the temperature below the profile. The throat TC thus maintains a fire under controlled temperature conditions in the main chamber without an explosion, using a single-stage system. This single-stage control system, for additional safety and redundancy, may include two back-up thermocouples, one in the main chamber (main chamber TC), and, a second (stack TC) in the exhaust stack downstream of the afterburner. The main chamber TC senses the ambient, essentially instantaneous temperature at that location, and actuates the water spray system. The main chamber TC and the stack TC may each also attenuate the output of the main burner and control its on/off operation.
대표청구항
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In a pyrolysis furnace having a main chamber, a main heat source to directly heat air ducted into said chamber, a throat near the top of the main chamber through which throat organic vapor volatilized by pyrolysis of polymer-bonded metal parts leave the main chamber, an afterburner chamber provided
In a pyrolysis furnace having a main chamber, a main heat source to directly heat air ducted into said chamber, a throat near the top of the main chamber through which throat organic vapor volatilized by pyrolysis of polymer-bonded metal parts leave the main chamber, an afterburner chamber provided with an afterburner to incinerate said organic vapor downstream of the throat, an exhaust stack through which incinerated vapor is vented, a first temperature sensing means (“main chamber TC”), located within the main chamber, near the top thereof, to sense the ambient temperature of gases above the metal parts therewithin; and, a second temperature sensing means (“stack TC”), located in the exhaust stack downstream of said afterburner; the improvement comprising, a third temperature sensing means (“throat TC”), located in said throat upstream of said afterburner to sense the instantaneous critical throat temperature; programmable controller means including a temperature control means operatively connected to said throat TC to provide a predetermined temperature profile as a function of time and an instantaneous critical temperature, at any time within a burn cycle; and, water spray means responsive only to said throat TC when said throat temperature exceeds said predetermined instantaneous critical temperature in the range from about 600°-1100°F., so that water is sprayed into a zone above said metal parts in said main chamber to lower said throat temperature below said required temperature; whereby combustion of said polymer is so complete that said incinerated vapor leaving said exhaust stack is permeable to light in the visible wavelength range.
이 특허를 인용한 특허 (6)
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Vidojevic, Nenad; Evers, Gilbert J., Fire containment system.
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McIntyre Glover C. (Pickering CAX) Lacombe Robert J. (Saint John WI CAX) Forbess Russell G. (Weston WI), Furnace combustion zone temperature control method.
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Anthony Frank H. (326 Atherton Dr. Metaire LA 70005), Kiln with contaminant after-burner.
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Kleinhenz Ned J. (Beavercreek OH) Gaunce Alvin L. (Pointe Claire MI CAX) Schmall Robert A. (Temperance MI) Schultz Thomas J. (Maumee OH), Pyrolyzer-kiln system.
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Koptis Robert A. (Brookpark OH) Heran Robert F. (Westlake OH), Smokeless pyrolysis furnace with micro-ramped temperature controlled by water-spray.
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Hemsath Klaus Heinrich ; Thekdi Arvind Chhotalal ; Whitbeck Rodney G. ; Shapona Mark George ; Lucas Ronald Scott ; Mack Claude Melvin, Thermal treating apparatus and process.
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