公开(公告)号：EP0632741A1

公开(公告)日：1995-01-11

申请号：EP93906526.0

申请日：1993-03-15

申请人： F.L. Smidth & Co. A/S

发明人： HUNDEBOL, Soren

IPC分类号： B01D53 ,  C04B7 ,  F23J15

CPC分类号： B01D53/56 ,  C04B7/364 ,  F23J15/003

摘要： For selective reduction of the NO-content in exhaust gases from a kiln plant, a method is described according to which a mixture of ammonia and water is introduced into the exhaust gases. According to this method the ammonia and water is mixed just prior to being sprayed into the kiln plant by the ammonia being dosed into a preferably even stream of water. Hence an inexpensive and efficient removal of the NO-content in the exhaust gases is obtained.

公开(公告)号：EP0756584B1

公开(公告)日：1999-07-07

申请号：EP95917289.1

申请日：1995-04-18

申请人： F.L. Smidth & Co. A/S

发明人： HUNDEBOL, Soren

IPC分类号： C04B7/44

CPC分类号： F27B7/42 ,  C04B7/361 ,  Y02P40/121 ,  C04B7/364 ,  C04B7/44

公开(公告)号：EP0701539B1

公开(公告)日：1997-11-05

申请号：EP94917569.9

申请日：1994-05-27

申请人： F.L. Smidth & Co. A/S

发明人： HUNDEBOL, Soren

IPC分类号： C04B7/44 ,  C04B7/24

CPC分类号： C04B7/24 ,  C04B7/40 ,  F23G2201/10 ,  F23G2201/80 ,  F23G2206/10 ,  F23G2209/12 ,  Y02P40/121 ,  Y02P40/126 ,  Y02P40/145 ,  C04B7/4423

摘要： A method and plant for burning sludge or filter cakes during the cement clinker manufacture where the cement is manufactured in known manner by the cement raw meal being preheated, calcined and burned into clinker with subsequent cooling of the clinker and where the sludge is dried and finely divided prior to burning. In connection with this method a drying method is indicated by means of which the drying gas volume through the drier unit is substantially reduced. This is done by feeding hot raw meal from either the preheater or a separating cyclone installed in connection with the calciner to the drier unit - which may be a drier crusher. In principle, there is no upper limit to the water content in the sludge which may be used for the process, and applicable types of sludge include for example sewage sludge, bleaching earth, paper sludge, fibre rejects, combustible chemical residues, e.g. waste derived from the manufacture of nylons and pesticides, drill sludge resulting from oil exploration and similar types.

公开(公告)号：EP0738346A1

公开(公告)日：1996-10-23

申请号：EP95904408.0

申请日：1995-01-02

申请人： F.L. Smidth & Co. A/S

发明人： ANDERSEN, Charlotte, Beicker ,  HUNDEBOL, Soren

IPC分类号： C09C1

CPC分类号： C09C1/021 ,  C09C1/0081 ,  C09C1/42

摘要： The present invention relates to a method for manufacturing a filler from a mineral containing sludge which is a by-product from the manufacture of recycled paper. By the method according to the invention the sludge is introduced into a stream of hot gases from a burning chamber (7) and conveyed together with the gas stream to a drying and comminuting device (1) wherefrom the dry and finely divided paper material, suspended in the exit gas, is directed to a separator (4) in which the paper material is separated from the exit gas. The paper material is subsequently fired into the burning chamber and the organic content of the material is incinerated subject to development of heat. The mineral residue of the paper material which normally contains CaCo3, kaolin and several minor components is calcined in the burning chamber for a suitable period of time at a controlled temperature, and finally the heat-treated material is cooled by means of air.

公开(公告)号：EP0756584A1

公开(公告)日：1997-02-05

申请号：EP95917289.0

申请日：1995-04-18

申请人： F.L. Smidth & Co. A/S

发明人： HUNDEBOL, Soren

IPC分类号： C04B7 ,  F27B7 ,  F27D19

CPC分类号： F27B7/42 ,  C04B7/361 ,  Y02P40/121 ,  C04B7/364 ,  C04B7/44

摘要： The invention relates to a method for controlling the temperature in a kiln in which cement clinker is manufactured, with a burning zone temperature within the range 1100-1500 °C. This invention makes it possible to control the temperature in the kiln, and hence to control the manufacture of the clinker which is produced in the cement kiln, while simultaneously reducing the NOx-emission of the kiln to a minimum. By the method according to the invention, a calculation is made of the sulphur evaporation in the kiln, thereby obtaining a measure of the instantaneous temperature in the burning zone. The evaporation factor is calculated on the basis of measurements of the sulphur content in the cyclone material which passes to the kiln or a measurement of the sulphur content in the exit gases out of the kiln.

公开(公告)号：EP0632741B1

公开(公告)日：1996-08-28

申请号：EP93906526.4

申请日：1993-03-15

申请人： F.L. Smidth & Co. A/S

发明人： HUNDEBOL, Soren

IPC分类号： B01D53/34

CPC分类号： B01D53/56 ,  C04B7/364 ,  F23J15/003

摘要： For selective reduction of the NO-content in exhaust gases from a kiln plant, a method is described according to which a mixture of ammonia and water is introduced into the exhaust gases. According to this method the ammonia and water is mixed just prior to being sprayed into the kiln plant by the ammonia being dosed into a preferably even stream of water. Hence an inexpensive and efficient removal of the NO-content in the exhaust gases is obtained.