Monitoring and controlling kiln operation in calcination of coke
阅读：327发布：2022-06-13
专利汇可以提供Monitoring and controlling kiln operation in calcination of coke专利检索，专利查询，专利分析的服务。并且Calcination of petroleum coke in a rotary kiln is monitored by optical pyrometer inspection, inward from the coke discharge end, at a plurality of places spaced longitudinally inside the kiln, with the improved result of enabling the kiln to be controlled so that desired readings at one of the places, e.g., nearest the coke discharge end, are not impeded or falsified by flame and smoke conditions caused by burning of volatiles. Since pyrometer readings are found to produce a special signal due to flame or smoke, the use of the plural inspections permits detecting the location of such conditions and controlling the kiln to keep the flame and smoke from reaching the place of desired readings.，下面是Monitoring and controlling kiln operation in calcination of coke专利的具体信息内容。
1. IN A METHOD OF CALCINING COKE WHEREIN THE COKE IS ADVANCED FROM FEED END TO DISCHARGE END IN A ROTARY KILN COUNTERCURRENT TO GAS FLOW AND WHEREIN BY CASUSING HEAT TO TR VERS THE KILN, COMBUSTIBLE VOLATILES ARE REMOVED FROM THE TRAVELING COKE AND ARE CAUSED TO BURN CONTINUOUSLY IN AN INTERMEDIATE REGION OF THE KILN AND THEREBY TO PRODUCE HEAT USED IN CONTINUING REMOVAL OF VOLATILES, SAID BURNING CREATING A CONDITION OF FLAME AND/OR SMOKE CONSTITUTING A COMBUSTION DISTURBANCE ACROSS THE KILN THAT IS OBSERVABLE FROM THE DISCHARGE END, AND THE PLACE OF SAID BURNING BEING INDICATED BY THE PLACE OF SAID OBSERVABLE DISTURBANCE AND BEING MOVABLE, WITH ACCOMPANIMENT BY CORRESPONDING MOVEMENT OF SAID OBSERVABLE DISTURBANCE, LENGTHWISE OF TGE KILN IN ACCORDANCE WITH OPERATING CONDITIONS: THE PROCEDURE OF MONITORING KILN OPERATION BY OPTICAL PYROMETER INSEPCTION OF THE INTERIOR OF THE KILN FROM THE DISCHARGE END, SUCH INSPECTION OF SAID COMBUSTION DISTURBANCE YIELDING A DISTINCTIVE INSTABILITY OF TEMPERATURE SIGNALS THAT IS DETECTABLE AS SUCH BUT IS MEANINGLESS AS A READING OF KILN TEMPERATURE; SAID PROCEDURE COMPRISING A. EFFECTING SAID INSPECTION OF A FIRST KILN LOCALITY DOWNSTREAM IN THE COKE PATH FROM A DESIRED PLACE FOR SAOD COMBUSTION DISTURBANCE, TO OBTAIN TEMPERATURE SIGNALS SIGNIFICANT TO THE EFFECTIVENESS OF THE CALCINING OPERATION, B. EFFECTING SAID INSPECTION OF A SECOND KILN LOCALITY SPACED UPSTREAM IN SAID PATH FROM THE FIRST LOCALITY BUT ALSO DOWNSTREAM OF SAID DESIRED PLACE, TO DETERMINED, BY APPEARANCE OF TEMPERATURE SIGNALS HAVING OR LACKING SAID INSTABILITY, WHETHER SAID DISTURBANCE IS OR IS NOT OCCURRING AT SAID SECOND LOCALITY, AND C. WHEN SAID INSPECTION OF SAID SECOND LOCALITY INDICATES OCCURRENCE OF SAID DISTURBANCE, ADJUSTING THE KILN OPERATION AS TO CONDITION, TO CAUSE SAID VOLATILE BURNING AND DISTURBANCE TO MOVE UPSTREAM TOWARD THE DESIRED PLACE, AWAY FROM THE SECONDLOCALITY, FOR KEEPING SAID DISTURBANCE AWAY FROM SAIDFIRST LOCALITY.
2. A method as defined in claim 1 which includes d. effecting said optical pyrometer inspection of a third kiln locality which is upstream of the second locality and is representative of the desired place for said burning and disturbance, e. said adjustment is condition of kiln operation being effected to maintain instability of temperature signals in said third locality inspection and to prevent or remove said instability as to said second locality inspection, whereby to tend to keep said combustion disturbance upstream of the second locality but not upstream of the third locality.
3. A method as defined in claim 2 in which air is adjustably supplied at one or more intermediate locations of the kiln, for use in said burning of volatiles, said step of adjusting the condition of kiln operation comprising adjusting said air supply, including increasing said supply to cause the place of said burning and combustion to move in a direction upstream of the coke path.
4. A method as defined in claim 1 in which air is adjustably supplied at one or more intermediate locations of the kiln, for use in said burning of volatiles, said step of adjusting the condition of kiln operation comprising adjusting said air supply, including increasing said supply to cause the place of said burning and combustion to move in a direction upstream of the coke path.
5. A method as defined in claim 1 in which said adjustment to cause the volatile burning and disturbance to move upstream along the coke path comprises one or more of: adjusting the rotation of the kiln to a lower rate; increasing supply of air into the kiln said burning; adjusting feed of coke into the kiln to a lower rate.
6. A method as defined in claim 1 which includes providing a controllable supply of heat by combustion of fuel, directed into the discharge end of the kiln foR coaction with the heat of said burning of volatiles in calcining the coke, and controlling said discharge end supply of heat in accordance with said inspection of said first kiln locality, to maintain the temperature at said locality substantially at a predetermined value.
7. A method as defined in claim 6 in which air is supplied at one or more intermediate locations of the kiln, for use in said burning of volatiles, and in which said discharge end supply of heat comprises directing hot gases of combustion into the kiln and said control of said heat supply comprises initiating same when the temperature at the first locality falls below said predetermined value and interrupting same when said temperature rises above said value.
8. A method as defined in claim 7 in which the intermediate supply of air is adjustable and in which the step of adjusting the condition of kiln operation to control said combustion disturbance comprises adjusting said air supply, including increasing said supply to cause the place of said burning and combustion to move in a direction upstream of the coke path.
9. A method as defined in claim 6 which includes d. effecting said optical pyrometer inspection of a third kiln locality which is upstream of the second locality and is representative of the desired place for said burning and disturbance, e. said adjustment in condition of kiln operation being effected to maintain instability of temperature signals in said third locality inspection and to prevent or remove said instability as to said second locality inspection, whereby to tend to keep said combustion disturbance upstream of the second locality but not upstream of the third locality.
10. A method as defined in claim 9 in which f. air is adjustably supplied at one or more intermediate locations of the kiln, for use in said burning of volatiles, and said discharge-end supplying of heat comprises directing hot gases of combustion into the kiln, g. said control of said heat supply comprising initiating same when the temperature at the first locality falls below said predetermined value and interrupting same when said temperature rises above said value, and h. said step of adjusting the condition of kiln operation to control said combustion disturbance comprises adjusting said air supply, including increasing said supply to cause the place of said burning and combustion to move in a direction upstream of the coke path.
11. A method as defined in claim 5 which includes furnishing heat when desired by burning a stream of fuel and directing same into the discharge end, and controlling said furnished heat to maintain the temperature as detected at the first locality substantially at a predetermined value, by respectively initiating and interrupting said burning when the detected temperature falls below and rises above said value.
12. APPARATUS FOR CALCINING COKE COMPRISING A. A ROTARY KILN HAVING A COKE FEED END AND A COKE DISCHARGE END AND ARRANGED FOR TRAVEL OF GASES COUNTERCURRENT TO THE TRAVEL OF COKE, B. ADJUSTABLE MEANS FOR SUPPLYING AIR AT LEAST AT ONE LOCALITY INTERMEDIATE THE ENDS OF THE KILN, FOR USE IN BURNING VOLATILES REMOVED FROM THE COKE, THE PLACE OF SAID BURNING BEING OBSERVABLE BY COMBUSTION DISTURBANCE OF SAID BURNING, C. OPTICAL PYROMETER MEANS FOR INSPECTING THE INTERIOR OF THE KILN FROM THE DISCHARGE END AT A PLURALITY OF LOCALITIES TO YIELD TEMPERATURE SIGNALS, SAID PYROMETER MEANS YIELDING A DISTINCTIVE INSTABILITY OF TEMPERATURE SIGNALS WHEN INSPECTING A LOCALITY AT OR UPSTREAM OF SUCH COMBUSTION DISTURBANCE, SAID PYROMETER MEANS COMPRISING D. FIRST MEANS FOR INSPECTING THE KILN INTERIOR AT A FIRST LOCALITY CLOSER TO THE DISCHARGE END THAN THE FEED END, TO PRODUCE TEMPERATURE SIGNALS INDICATIVE OF THE EFFECTIVENESS OF CALCINING, AND E. SECOND MEANS FOR INSPECTING THE KILN INTERIOR AT A SECOND LOCALITY UPSTREAM OF THE FIRST LOCALITY, TO PRODUCE TEMPERATURE SIGNALS INDICATIVE OF PRESENCE OR ABSENCE OF COMBUSTION DISTURBANCE AT SAID LOCALITY, AND F. MEANS CONTROLLED BY SAID PYROMETER MEANS AND RESPONSIVE TO SUCH DISTINCTIVE INSTABILITY OF TEMPERATURE SIGNALS FROM THE SECOND MEANS, FOR ADJUSTING THE AIR SUPPLY MEANS TO INCREASE THE AIR SUPPLIED THEREBY FOR CAUSING THE BURNING OF VOLATILES TO BE DISPLACED UPSTREAM OF SAID SECOND LOCALITY.
13. Apparatus as defined in claim 12 in which g. said pyrometer means also includes third means for inspecting the kiln interior at a third locality upstream of the second locality, to produce temperature signals indicative of presence or absence of combustion disturbance at said locality, and h. said means controlled by said pyrometer means is also responsive to presence or absence of such distinctive instability of temperature signals from the third means, for so adjusting the air supply means as to maintain the said instability of signals from the third means, for keeping the combustion disturbance at a position which, while upstream of the second locality, is not upstream of the third locality.
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