US4059019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for extracting gas samples of high temperature gases, particularly for cement rotary kiln furnace exhaust gases
Assignee: Kloeckner Humboldt Deutz AG
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Filing: 1976-08-09
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Granted: 1977-11-22
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Expires: 1996-08-09
Abstract
Abstract Gas samples are extracted from a rotary cement kiln type furnace in the area of raw material input and exhaust gas discharge from and to, respectively, a cyclone heat exchanger. The intervening chamber is provided with a door covering a passageway into the chamber through which a gas probe, carried by a gas pick-up device, is extended and retracted. The pick-up device is movably mounted in a guide and is provided with a coolant and apparatus for directing a blast of air to clean the probe immediately prior to withdrawal from the furnace. Emergency controls are provided to sequentially clean the probe, withdraw the probe and close the door for the passageway in response to detection of an adverse condition in at least one operating parameter of the system.
Inventors
- 👤 Winfried Wurster
- 👤 Jochen Kuhne
- 👤 Gerd Frodermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:52
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/22; G01N1/2247; G01N1/2258
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
118 words
Apparatus for obtaining gas samples from the exhaust gases of a rotary kiln furnace having an exhaust gas outlet, comprising: gas sampling means including a gas sample pick-up device which comprises an elongate gas sampling probe; guide means mounting said pick-up device for movement in the longitudinal direction of said probe for disposition of said probe within and without of the exhaust gas outlet of the furnace; drive means connected to said pick-up device for driving the same along said guide means; remote control means connected to operate said drive means; and means for sensing at least one operating parameter and independently operating said drive means to withdraw said probe upon sensing a predetermined value of that parameter.
Claim 2
Dependent Claim
118 words
Apparatus for obtaining gas samples from the exhaust gases of a rotary kiln furnace having an exhaust gas outlet, comprising: gas sampling means including a gas sample pick-up device which comprises an elongate gas sampling probe; guide means mounting said pick-up device for movement in the longitudinal direction of said probe for disposition of said probe within and without of the exhaust gas outlet of the furnace; drive means connected to said pick-up device for driving the same along said guide means; remote control means connected to operate said drive means; and means for sensing at least one operating parameter and independently operating said drive means to withdraw said probe upon sensing a predetermined value of that parameter.
Claim 3
Dependent Claim
240 words
Apparatus for taking gas samples from the exhaust gases of a rotary kiln, comprising: a rotary kiln including an opening for discharging exhaust gases and receiving raw material; a heat exchanger for preheating the raw material, said heat exchanger including an exhaust gas inlet, a raw material inlet and a raw material outlet; walls connected together to define a raw material inlet chamber connecting said rotary kiln opening with said exhaust gas inlet and said raw material outlet of said heat exchanger; a passageway through one of said walls; gas sampling means outside of said chamber including a gas pick-up device and a gas sampling probe carried by said gas pick-up device; control means for moving said gas pick-up device including a drive motor connected to said pick-up device; guide means mounting said pick-up device for movement toward and away from said chamber to dispose said probe, through said passageway, into and out of the exhaust gas flow of said furnace; and door means for closing said passageway when said probe is withdrawn, sensing means in said control means for sensing at least one operating parameter and responsive to a predetermined value of that parameter to produce a control signal, and emergency operating means in said control means and connected to said sensing means and to said door means and said drive motor and responsive to said control signal to cause withdrawal of said probe and closure of said passageway.
Claim 4
Dependent Claim
240 words
Apparatus for taking gas samples from the exhaust gases of a rotary kiln, comprising: a rotary kiln including an opening for discharging exhaust gases and receiving raw material; a heat exchanger for preheating the raw material, said heat exchanger including an exhaust gas inlet, a raw material inlet and a raw material outlet; walls connected together to define a raw material inlet chamber connecting said rotary kiln opening with said exhaust gas inlet and said raw material outlet of said heat exchanger; a passageway through one of said walls; gas sampling means outside of said chamber including a gas pick-up device and a gas sampling probe carried by said gas pick-up device; control means for moving said gas pick-up device including a drive motor connected to said pick-up device; guide means mounting said pick-up device for movement toward and away from said chamber to dispose said probe, through said passageway, into and out of the exhaust gas flow of said furnace; and door means for closing said passageway when said probe is withdrawn, sensing means in said control means for sensing at least one operating parameter and responsive to a predetermined value of that parameter to produce a control signal, and emergency operating means in said control means and connected to said sensing means and to said door means and said drive motor and responsive to said control signal to cause withdrawal of said probe and closure of said passageway.
Claim 5
Dependent Claim
27 words
The apparatus of claim 2, comprising: pivotal mounting means mounting said guide means so that the same may be rotated away from said chamber for maintenance purposes.
Claim 6
Dependent Claim
19 words
The apparatus of claim 2, wherein said sampling means comprises means supporting a flow of coolant to said probe.
Claim 7
Dependent Claim
21 words
The apparatus of claim 2, comprising: cleaning means for supporting a flow of cleaning fluid to the tip of said probe.
Claim 8
Dependent Claim
39 words
The apparatus of claim 2, comprising: cleaning means connected to said emergency operating means and responsive to said control signal to support a flow of cleaning fluid to the tip of said probe prior to withdrawal of said probe.
Claim 9
Independent Claim
59 words
A method of taking gas samples from the exhaust gases of a rotary kiln furnace, comprising the steps of: inserting a gas sampling probe from outside of the furnace into the exhaust gas flow of the furnace; feeding a gas sample from the probe to gas analyzing equipment outside of the furnace; and withdrawing the probe from the furnace.
Claim 10
Independent Claim
59 words
A method of taking gas samples from the exhaust gases of a rotary kiln furnace, comprising the steps of: inserting a gas sampling probe from outside of the furnace into the exhaust gas flow of the furnace; feeding a gas sample from the probe to gas analyzing equipment outside of the furnace; and withdrawing the probe from the furnace.
Claim 11
Independent Claim
147 words
A method of taking gas samples of the exhaust gases of the furnace which has a door to provide access to the flow of the exhaust gases, comprising the steps of: opening the door; inserting a gas sampling probe through the door and into the flow of exhaust gas; transporting a gas sample from the probe to an external gas analyzer while contemporaneously cooling the probe; flowing a cleaning agent over the tip of the probe by directing a blast of compressed air at the tip of the probe; withdrawing the probe from the furnace; closing the door to prevent the escape of exhaust gas and heat and the introduction of unfiltered air; and monitoring at least one system parameter and immediately causing the sequential steps of flowing a cleansing agent, withdrawing the probe and closing the door upon detection of a predetermined value of that parameter.
Claim 12
Independent Claim
147 words
A method of taking gas samples of the exhaust gases of the furnace which has a door to provide access to the flow of the exhaust gases, comprising the steps of: opening the door; inserting a gas sampling probe through the door and into the flow of exhaust gas; transporting a gas sample from the probe to an external gas analyzer while contemporaneously cooling the probe; flowing a cleaning agent over the tip of the probe by directing a blast of compressed air at the tip of the probe; withdrawing the probe from the furnace; closing the door to prevent the escape of exhaust gas and heat and the introduction of unfiltered air; and monitoring at least one system parameter and immediately causing the sequential steps of flowing a cleansing agent, withdrawing the probe and closing the door upon detection of a predetermined value of that parameter.
References Cited (Backward Citations)
US1809325A
Cited
US3643508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-21 | 1981-05-23 | 1981-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-21 | 1985-05-23 | 1985-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-21 | 1989-05-23 | 1989-11-22 | $7700.00 | Window Closed / Lapsed |