-
公开(公告)号：US3615080A
公开(公告)日：1971-10-26
申请号：US3615080D
申请日：1969-12-18
摘要： AN APPARATUS FOR AND METHOD OF MANUFACTURING WHITE PORTLAND CEMENT CLINKER ARE DISCLOSED. THE APPARATUS HAS A REACTOR PROVIDED WITH A REACTOR BED ADAPTED TO RECEIVE AND PROCESS WHITE PORTLAND CEMENT CLINKER RAW MATERIAL. THE REACTOR HAS A HEATING AND DRYING ZONE FOR REMOVING THE WATER FROM THE RAW MATERIAL, A CALCINING ADJACENT THE HEATING AND DRYING ZONE FOR CALCINING THE CALCAREOUS PORTION OF RAW MATERIAL, A REACTION ZONE ADJACENT THE CALCINING ZONE FOR CLINKERING THE RAW MATERIAL, A GAS DISTRIBUTION ZONE ADJACENT THE REACTION ZONE FOR RECEIVING A HEATING AND REDUCING FLUID HAVING A PRESSURE SUFFICIENT TO TRAVERSE THE REACTION ZONE, THE CALCINING ZONE AND THE HEATING AND DRYING ZONE WITH A RESIDUAL REMAINING PRESSURE, AND A GAS SEAL ZONE ADJACENT THE GAS DISTRIBUTION ZONE. A DIVIDER IN THE GAS SEAL ZONE SPLIT THE FLOW OF THE SINTERED RAW MATERIAL INTO TWO CHANNELS. EACH CHANNEL HAS A CONSTRICTED PASSAGE IN THE DIRECTION OF THE FLOW OF THE SINTERED RAW MATERIAL TO PRODUCE A PRESSURE DROP THROUGH THE GAS SEAL ZONE GREATER THAN THE PRESSURE IN THE HEATING AND REDUCING FLUID. A COOLING ZONE OF THE REACTOR ADJACENT THE GAS SEALING ZONE COOLS THE SINTERED RAW MATERIAL. A COOLING PLENUM IN THE COOLING ZONE IS CONNECTED TO THE HEATING AND DRYING ZONE AND HAS A FIRST LOUVER WHICH DEFINES WITH AN EXIT LOUVER THE COOLING ZONE, THUS RETAINING THE SINTERED RAW MATERIAL IN THE COOLING ZONE WHILE EMITTING THE HEATING AND REDUCING FLUID FROM SUCH COOLING ZONE. A DISCHARGE MEANS IN DISCHARGE ZONE OF THE REACTOR DISCHARGES THE SINTERED MATERIAL WHILE SEALING THE DISCHARGE ZONE FROM THE ATMOSPHERE. THE METHOD INCLUDES THE STEPS OF: (A) RECEIVING THE RAW MATERIAL IN THE REACTOR BED OF THE REACTOR, (B) PASSING THE RAW MATERIAL THROUGH A HEATING AND DRYING ZONE TO REMOVE THE WATER FROM THE RAW MATERIAL, (C) PASSING THE DRIED RAW MATERIAL THROUGH A CALCINING ZONE ADJACENT THE HEATING AND DRYING ZONE TO CALCINE THE CALCAREOUS PORTION OF THE RAW MATERIAL, (D) PASSING THE REACTED RAW MATERIAL THROUGH A GAS DISTRIBUTION ZONE ADJACENT THE REACTION ZONE TO RECEIVE A HEATING AND REDUCING FLUID PRODUCED FROM A FLUID FUEL BURNED IN A DEFICIENCY OF OXYGEN-BEARING GAS AND HAVING A PRESSURE SUFFICIENT TO TRAVERSE THE REACTION ZONE, THE CALCINING ZONE AND THE HEATING AND DRYING ZONE WITH A RESIDUAL REMAINING PRESSURE, (E) PASSING THE RAW MATERIAL THROUGH A GAS SEALING ZONE ADJACENT THE GAS DISTRIBUTION ZONE, (F) SPLITTING THE FLOW OF THE SINTERED RAW MATERIAL IN THE GAS SEAL ZONE INTO TWO CHANNELS, EACH CHANNEL HAVING A CONSTRICTED PASSAGE IN THE DIRECTION OF THE FLOW OF THE RAW MATERIAL TO PRODUCE A PRESSURE DROP THROUGH SUCH GAS SEAL ZONE GREATER THAN THE ORIGINAL PRESSURE IN SUCH HEATING AND REDUCING FLUID, (G) PASSING THE SINTERED RAW MATERIAL THROUGH A COOLING ZONE ADJACENT THE GAS SEAL ZONE TO COOL THE SINTERED RAW MATERIAL UNDER REDUCING CONDITIONS, (H) RECEIVING THE HEATING AND REDUCING FLUID AT THE RESIDUAL REMAINING PRESSURE IN A COOLING PLENUM IN THE COOLING ZONE, (I) RETAINING THE RAW MATERIAL IN THE COOLING ZONE WHILE EMITTING THE HEATING AND REDUCING FLUID FROM THE COOLING PLENUM INTO THE COOLING ZONE, (J) RETAINING THE RAW MATERIAL IN THE COOLING ZONE WHILE EMITTING THE HEATING AND REDUCING FLUID FROM THE COOLING ZONE THROUGH AN EXIT LOUVER, (K) PASSING THE SINTERED RAW MATERIAL THROUGH A DISCHARGE ZONE ADJACENT THE COOLING ZONE, AND (L) DISCHARGING THE RAW MATERIAL WHILE SEALING THE DISCHARGE ZONE FROM THE ATMOSPHERE.
-
公开(公告)号：US3179345A
公开(公告)日：1965-04-20
申请号：US29823563
申请日：1963-07-29
-
公开(公告)号：US3595543A
公开(公告)日：1971-07-27
申请号：US3595543D
申请日：1970-01-08
CPC分类号： F27D19/00 , F27B7/42 , F27D15/0213 , F27D2015/0233 , F27D2019/0018 , F27D2019/0068 , F27D2021/0007
摘要： This invention relates to an apparatus for and method of cooling and treating cement clinker discharged from a discharge end of a cement kiln, which kiln has a burner disposed adjacent the discharge end. The apparatus has a grate-type cooling means adapted to receive a bed of the cement clinker from the discharge end at a temperature of about 2,700to 2,800* F. and to discharge the cement clinker at a temperature of about 350* F. The cooling means has a pressure zone for cooling the cement clinker from a temperature of about 2,500* to a temperature of about 1,850*. A first cooling means is disposed adjacent the pressure zone for directing a pressurized cooling fluid through the cooling means and through the bed to cool the cement clinker from a temperature of about 2,500* F. to a temperature of about 1,850* F. and also to heat the cooling fluid to a temperature of about 400* to about 500* F. for use as secondary air for the burner. The cooling means also has a reduction and cooling zone adjacent the pressure zone for cooling and treating the cement clinker from a temperature of about 1,850* F. to a temperature of about 1,100* F. Gas generator means in the reduction and cooling zone direct a pressurized reducing fluid through the cooling means and through the bed to cool the cement clinker from a temperature of about 1,850* F. to a temperature of about 1,100* F. and to exit the reducing fluid from the reduction and cooling zone. Additionally, the cooling means has a cooling zone adjacent the reduction and cooling zone for cooling the cement clinker from a temperature of about 1,100* F. to a temperature of about 350* F. A second cooling means adjacent the cooling zone directs a pressurized cooling fluid through the cooling means and through the bed to cool the cement clinker from about 1,100* F. to about 350* F. and to heat the cooling fluid to a temperature of about 230* to 250* F. for use as primary air for the burner. The method includes the steps of receiving a bed of the cement clinker on a grate-type cooling means from the discharge end at a temperature of about 2,700* to 2,800* F.; cooling the cement clinker in a pressure zone of the cooling means from a temperature of about 2,500* F. to a temperature of about 1,850* F. by directing a pressurized cooling fluid through the cooling means and through the bed to heat the cooling fluid to a temperature of about 400* to about 500* F. for use as secondary air for the burner; cooling the partially cooled cement clinker in a reduction and cooling zone adjacent the pressure zone of the cooling means from a temperature of about 1,850* F. to a temperature of about 1,100* F. by directing a pressurized reducing fluid through the cooling means and through the bed and to exit the reducing fluid from the reduction and cooling zone; and cooling the reduced cement clinker in a cooling zone adjacent the reduction and cooling zone from a temperature of about 1,100* F. to a temperature of about 350* F. by directing a pressurized cooling fluid through the cooling means and through the bed to heat the cooling fluid to a temperature of about 230* to 250* F. for use as primary air for the burner.
-
公开(公告)号：US3584850A
公开(公告)日：1971-06-15
申请号：US3584850D
申请日：1969-07-02
CPC分类号： C22B1/2406 , C22B1/2413 , F27B7/32 , F27B7/386 , F27B7/42 , F27B2007/022 , F27B2007/025 , F27B2007/046 , F27B2007/2008 , F27B2007/327
摘要： This invention relates to a method of and apparatus for pyroprocessing raw material having a reaction temperature and containing moisture into sinter. The apparatus has a rotary kiln adapted to receive the raw material pellets at one end of the rotary kiln and to move the raw material pellets along a path of movement in the rotary kiln to the other end of the rotary kiln. Heating means are adjacent the other end of the rotary kiln for directing a heated fluid through the rotary kiln, the rotary kiln having a drying means adjacent the one end of the rotary kiln for heating the raw material pellets by the heated fluid to substantially remove the moisture in the raw material pellets. Cooling means communicate with the drying means for mixing a cooling fluid with the heated fluid to limit the temperature in the drying means below the temperature at which the raw material pellets explode due to rapid heating to a deleteriously high temperature. The rotary kiln has a preheating zone adjacent the drying means further along the path of movement for heating the raw material pellets to a temperature below the reaction temperature. The rotary kiln has a reaction zone adjacent the other end of the rotary kiln for heating the raw material pellets above the reaction temperature to pyroprocess the raw material pellets into the sinter. Restriction means are between the preheating zone and the reaction zone for damming a reservoir of the raw material pellets adjacent the restriction means so that the reservoir of the raw material pellets is protected from the direct radiation of the heated fluid and the temperature of the reservoir of raw material pellets remains unaffected by instantaneous changes in the temperature of the heated fluid, the restriction means being operable to meter minimum layers of the raw material pellets into the reaction zone so that the minimum layers of the raw material pellets are individually and rapidly heated to the reaction temperature by the heated fluid and the raw material pellets are converted into sinter. The method includes the steps of receiving the raw material pellets at one end of a rotary kiln and moving the raw material pellets along a path of movement in the rotary kiln to the other end of the rotary kiln; directing a heated fluid through the rotary kiln; heating the raw material pellets by the heated fluid adjacent the one end of the rotary kiln to substantially remove the moisture in the raw material pellets; mixing a cooling fluid with the heated fluid to limit the temperature (during the removal of the moisture) below the temperature at which the raw material pellets explode due to rapid heating to a deleteriously high temperature; heating the raw material pellets in a preheating zone of the rotary kiln further along the path of movement to a temperature below the reaction temperature; damming a reservoir of the raw material pellets adjacent the preheating zone and further along the path of movement so that the reservoir of the raw material pellets is protected from the direct radiation of the heated fluid and the temperature of the reservoir of the raw material pellets remains unaffected by instantaneous changes in the temperature of the heated fluid; metering minimum layers of the raw material pellets adjacent the preheating zone and further along the path of movement into a reaction zone of the rotary kiln adjacent the other end of the kiln; and heating raw material pellets individually and rapidly in the reaction zone of the rotary kiln to indivIdually and rapidly heat the raw material pellets to the reaction temperature by the heated fluid, thus converting the raw material pellets into the sinter.
-
公开(公告)号：US3218842A
公开(公告)日：1965-11-23
申请号：US27680263
申请日：1963-04-30
IPC分类号： G01N33/00
CPC分类号： G01N33/0032
-
-
-
-
搜索结果
5 条记录 (耗时 0.011 秒)