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51. 发明专利

JPH07118716A METHOD FOR CASTING STAVE COOLER WITH INSERT FOR COOLING FURNACE BODY OF BLAST FURNACE 失效
公开(公告)号：JPH07118716A
公开(公告)日：1995-05-09
申请号：JP28878493
申请日：1993-10-26
申请人： NIPPON KOKAN KK
发明人： MURAKAMI KOICHI , SUMIKAMA TAKASHI , MIMA IWATARO
IPC分类号： C21B7/10
摘要： PURPOSE:To prevent the development of crack, etc., in refractory brick by restraining thermal stress in the inner part of the refractory brick at the time of integrally casting a stave cooler with the refractory brick for cooling the furnace wall of a blast furnace. CONSTITUTION:At the time of integrally casting the stave cooler for cooling the furnace body of the blast furnace with the refractory brick silica material invasion into a molten metal preventing material 5 and a heat insulating material 6 are interposed between the refractory brick 1 and the stave cooler body 4.

52. 发明专利

JPH04329809A ASSISTING APPARATUS FOR BLAST FURNACE OPERATION 失效
公开(公告)号：JPH04329809A
公开(公告)日：1992-11-18
申请号：JP10153691
申请日：1991-05-07
申请人： NIPPON KOKAN KK
发明人： SAKURAI MASAAKI , SUMIKAMA TAKASHI , TARUMI YOSHIHIKO
IPC分类号： C21B5/00
摘要： PURPOSE:To provide an assisting apparatus for blast furnace, in which information from various kinds of sensors in the blast furnace are processed and evacuated to obtain the operational control standard values. CONSTITUTION:The assisting apparatus for blast furnace is provided with a blast furnace condition evaluation means 5 for processing data from each sensor 1 in the blast furnace body and evaluating the blast furnace condition, a data storing means 6 for temporarily storing various kinds of processed data and the blast furnace condition evaluated values, a means 7 for calculating correlation between various kinds of data and the blast furnace condition evaluated values, and a means 8 for preparing the operational control standard values by using the blast furnace condition evaluated values, an the basis of the values obtd. from both of an average value calculating means, where the values have a correlation comparable to or beyond the standard values with the blast furnace condition evaluated values, and the various kinds of data showing the blast furnace condition. By this method, as the data in sensor informations are renewed every day, the control standard values corresponding to variation of the used raw material and variation of the operational condition can be obtd.

53. 发明专利

JPH04325611A INSTRUMENT FOR MEASURING CONDITION IN BLAST FURNACE 失效
公开(公告)号：JPH04325611A
公开(公告)日：1992-11-16
申请号：JP9730791
申请日：1991-04-26
申请人： NIPPON KOKAN KK
发明人： SAKURAI MASAAKI , SUMIKAMA TAKASHI , KAWAWAKI ATSUSHI , MIMURO MICHIHIRO , MAMIYA EIJI , TAKAHIRA TSUGIO , FUJIKAWA RYOICHI
IPC分类号： C21B7/24
摘要： PURPOSE:To provide a tip plug difficult in the falling down of an instrument for measuring condition in a blast furnace. CONSTITUTION:In the instrument for measuring the condition in the blast furnace fitting a master lance 5, in which outer periphery of an inner pipe is made of multi-pipe structure so as to cooling water, and a slave lance 12 enabling insertion into and pulling-out from the inner pipe 32 in the master lance, on a carriage, and enabling reciprocating movement with a drawing chain for the carriage, magnet plates are fitted to the outer periphery at the small diameter part in the tip plug 36 and a step part between the large diameter part and the small diameter part so as to attract the tip plug 36 to the front face and the inside diameter part at the tip part 33 in the main lance 5 at the time of fitting the tip plug 36. By this method, the tip plug is difficult to fall down and the fitting is facilitated.

54. 发明专利

JPH04235207A APPARATUS FOR CONTROLLING DISTRIBUTION OF CHARGING MATERIAL INTO BLAST FURNACE 失效
公开(公告)号：JPH04235207A
公开(公告)日：1992-08-24
申请号：JP14762791
申请日：1991-06-19
申请人： NIPPON KOKAN KK
发明人： INABA MAMORU , AOKI TAICHI , SUMIKAMA TAKASHI , TAKEKOSHI ATSUHISA , SAKURAI MASAAKI , MATSUBARA SHINICHI
IPC分类号： C21B5/00
摘要： PURPOSE:To achieve automation of the operation and high level standardization and transmission of the operational technique by utilizing Al technique and constructing a system using operational knowledge related to distribution control for charging material into a blast furnace. CONSTITUTION:Noises contained in data from various kinds of sensors set in the blast furnace are removed, and from the data removing the noises intensities of center flow and peripheral flow and changing tendency in each sensor are inferred based on the knowledge base obtd. with the operational experiences and the model experiments. These inferred results are composed as the intensities of center flow and peripheral flow and the changing tendency based on the information related to waiting of charging, reduced blast, etc., and the knowledge base and the composed results are applied to a gas flow intensity decision matrix and a changing tendency decision matrix made based on the operational experience to decide the gas flow intensity and the changing tendency. This results are applied to an MA action decision matrix made with the model experiments to decide an MA action quantity. The MA action quantity is transmitted to PC, and the MA is automatically controlled.

55. 发明专利

JPH0489400A PRODUCTION OF ACICULAR GYPSUM CRYSTAL 失效
公开(公告)号：JPH0489400A
公开(公告)日：1992-03-23
申请号：JP20357090
申请日：1990-07-31
申请人： NIPPON KOKAN KK
发明人： MIZUSAWA MASATOSHI , SUMIKAMA TAKASHI , MIYAKE MINORU
IPC分类号： C01F11/46 , C30B29/62
摘要： PURPOSE:To efficiently obtain large gypsum crystals by continuously returning a prescribed amt. of a gypsum crystal slurry to an SO2 absorbing process when gaseous SO2 is absorbed in milk of lime and this milk of lime is oxidized to obtain gypsum. CONSTITUTION:Gaseous SO2 is absorbed in milk of lime this milk of lime is oxidized to obtain a gypsum crystal slurry and this slurry is concentrated and dehydrated to produce acicular gypsum crystals. At this time, a gypsum crystal slurry contg. 1-5 times as much gypsum crystals as gypsum crystals formed in the SO2 absorbing process is continuously returned to the SO2 absorbing process.

56. 发明专利

JPH0474919A MEASURING METHOD FOR PARTICLE DIAMETER OF COKE BLOCK 失效
公开(公告)号：JPH0474919A
公开(公告)日：1992-03-10
申请号：JP18774590
申请日：1990-07-16
申请人： NIPPON KOKAN KK
发明人： YAMATE YOSHITOMO , SUMIKAMA TAKASHI
IPC分类号： G01B15/00
摘要： PURPOSE:To correctly and easily obtain the data of the average particle diameter of an individual coke block by calculating the average particle size of the coke block based on the tomographic image obtained from the distribution of intensity of the penetrating X-rays. CONSTITUTION:An X-ray beam is cast to a block of coke from an X ray tube, and the X-ray penetrating the coke block is detected by a detector. Accordingly, a predetermined tomographic image 1 of the coke block is obtained. The tomographic image 1 is analyzed in an operating part, so that the dimensions in directions of three axes ((x)-axis, (y)-axis and (z)-axis) of the coke block are obtained. Thereafter, the average particle diameter (R) of the coke block is calculated from the calculated dimensions in the operating part according to the calculating method of an arithmetic mean, a harmonic mean, a geometric mean, etc.

57. 发明专利

JPH046207A SUPPORT SYSTEM IN APPARATUS FOR CONTROLLING FURNACE HEAT IN BLAST FURNACE 失效
公开(公告)号：JPH046207A
公开(公告)日：1992-01-10
申请号：JP10766990
申请日：1990-04-25
申请人： NIPPON KOKAN KK
发明人： SAKURAI MASAAKI , SUMIKAMA TAKASHI , AOKI TAICHI
IPC分类号： C21B5/00
摘要： PURPOSE:To provide support system for a furnace heat control apparatus in a blast furnace at good control accuracy by reflecting weight factor obtd. based on operational actual result to the blast furnace control. CONSTITUTION:Based on the blast furnace data from data input means, various data showing furnace condition in the blast furnace are made, and based on the data, working data are made. Based on the working data and the knowledge base, inference calculation as artificial intelligence is executed to decide action quantity to the blast furnace. At the time of executing this inference calculation, confidence degree is obtd. based on membership function, and this and the weight factor in various sensors are multiplied to correct the confidence degree, and based on the corrected confidence degree, the action degree is decided. Further, the weight factor is varied in order based on the operational actual result.

58. 发明专利

JPH03249110A INSTRUMENT FOR MEASURING REMAINING SLAG QUANTITY IN BLAST FURNACE 失效
公开(公告)号：JPH03249110A
公开(公告)日：1991-11-07
申请号：JP4576490
申请日：1990-02-28
申请人： NIPPON KOKAN KK
发明人： SAKURAI MASAAKI , SUMIKAMA TAKASHI
IPC分类号： C21B7/24
摘要： PURPOSE:To enable high accurate measurement by providing a means for measuring temp. at raceway in a blast furnace and temp. at tuyere body in the blast furnace and arithmetic means for estimating remaining slag quantity from the output difference between both means. CONSTITUTION:This measuring instrument for measuring the remaining slag quantity in the blast furnace is formed with the means for measuring the temp. at the raceway in the blast furnace, the means for measuring the temp. at the tuyere body in the blast furnace and the arithmetic means. In the above- mentioned arithmetic means, the outputs of both means for measuring the above- mentioned temps. are inputted and it is judged that the slag is remaining when the difference between both outputs is the prescribed quantity or below.

59. 发明专利

JPH03238022A DESULFURIZATION OF COKE OVEN GAS 失效
公开(公告)号：JPH03238022A
公开(公告)日：1991-10-23
申请号：JP3574190
申请日：1990-02-16
申请人： NIPPON KOKAN KK
发明人： KUMAGAI MASATOSHI , SUMIKAMA TAKASHI
IPC分类号： B01D53/50 , B01D53/34 , B01D53/77 , C01F11/46 , C10K1/12
摘要： PURPOSE:To prevent the adhesion of a product to an absorbing tower by using an NaOH solution in the absorbing tower as an adsorbent for absorbing the sulfur dioxide component in combustion exhaust gas and recovering formed NaHSO3 as a byproduct. CONSTITUTION:Desulfurization treatment is applied to coke oven gas and the sulfur component in the waste solution generated by the desulfurization treatment is burnt and the sulfur dioxide component in the combustion exhaust gas generated by combustion is absorbed by an absorbent in an absorbing tower 1 and, subsequently, a byproduct is recovered from the formed slurry. At this time, an NaOH solution is used in the absorbing tower 1 as the absorbent for absorbing the sulfur dioxide component in the combustion exhaust gas and NaHSO3 thus formed is recovered as a byproduct. As a result, the adhesion of the absorbent or reaction product to the absorbing tower, a circulation tank or a gas conduit is prevented and operation can be efficiently performed without requiring adherend removing work.

60. 发明专利

JPH03212487A METHOD FOR OPERATING COKE OVEN 失效
公开(公告)号：JPH03212487A
公开(公告)日：1991-09-18
申请号：JP892190
申请日：1990-01-18
申请人： NIPPON KOKAN KK
发明人： YAMATE YOSHITOMO , SUMIKAMA TAKASHI , KATO YUZO
IPC分类号： C10J3/66 , C10B43/02 , C10B57/18
摘要： PURPOSE:To improve coke gas yield by blowing CO2- and H2O-containing gas into the upper spatial part of a carbonization chamber in carbonizing coal, decomposing carbon sticking to the inner wall and recovering produced CO gas. CONSTITUTION:For example, part of a combustion waste gas is taken from the middle of a flue 4 with a conduit 5 and passed through a gas blowing port (8a) or (8b) provided in the top wall 6 or a sidewall 7 of the coke side into the upper spatial part (2a) of a carbonization chamber 2. CO2 and H2O in the blown waste gas are subjected to a reaction with carbon sticking to the inner wall of the upper spatial part (2a) to decompose the carbon. CO-containing gases produced by the aforementioned reaction, together with a coke oven gas, are passed through a riser 9 and recovered. Furthermore, any gas containing C2 and/or H2O at a relatively low temperature may be used as the gas blown into the upper spatial part (2a). Blast furnace gas, etc., are further used.

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