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1. 发明专利

JPH07293844A CONTROL METHOD OF COMBUSTION OF WASTE MELTING FURNACE PRODUCED GAS COMBUSTION FURNACE 失效
公开(公告)号：JPH07293844A
公开(公告)日：1995-11-10
申请号：JP8188194
申请日：1994-04-20
申请人： NIPPON STEEL CORP , NITTETSU PLANT DESIGNING CORP
发明人： FURUYA HIDEHIKO , TAKENOUCHI KOJI , HARA YOSHINOBU , YAMAUCHI SHUNJI , TODAKA MITSUMASA , MORI KOICHIRO
IPC分类号： F23G5/50 , F23G5/00
摘要： PURPOSE:To average the amount of heat of exhaust gas at the outlet port of a combustion furnace and control the steam generating amount of a waste heat boiler in constant by burning melting furnace produced gas, fluctuated in the amount of gas, the amount of heat generation and the like, stably. of a combustion furnace CONSTITUTION:In a combustion control method of a combustion furnace 4 wherein a part of combustible dust in gas generated from a melting furnace 1 is recovered to feed it to the burner stage of a combustion furnace 4 to effect combustion treatment upon combustion treating gas, generated from the waste melting furnace 1 and fluctuated in the amount of generating gas, the amount of heat generation and the like, the feeding amount of combustible dust is increased or decreased and the amount of combustion air is changed optimally in accordance with the feeding amount of the dust to control the amount of gas at the outlet port of the combustion furnace 4 in constant. Further, the amount of gas for cooling the combustion furnace 4, which is sent into the combustion chamber, is increased or decreased to control the outlet port gas temperature of the combustion furnace 4 in constant and the amount of exhaust gas at the outlet port of the combustion furnace 14 is controlled so as to be a given value whereby the amount of steam generation of a boiler is stabilized.

2. 发明专利

JPH07286218A DEVICE FOR DECIDING MELT DOWN OF SCRAP 失效
公开(公告)号：JPH07286218A
公开(公告)日：1995-10-31
申请号：JP10173494
申请日：1994-04-18
申请人： NIPPON STEEL CORP
发明人： TAKENOUCHI KOJI
IPC分类号： C22B9/20 , F27B3/08 , F27B3/28
摘要： PURPOSE:To provide a device for deciding melt-down of scrap which is capable of preventing overflow of the scrap by erroneous decision and a failure of a measuring instrument, assuring the quality of stable operation and improving efficiency without requiring the skill and experience of skilled persons in spite of a decrease in manpower and has a function corresponding to a skilled operator. CONSTITUTION:This device is provided with an ITV camera 6 which monitors the in-furnace condition mounted in the cap section of an electric furnace, a microphone which is mounted at the outer peripheral part of the furnace body and collects the sound and noises generated from arcs and a making electric power managing device 10 which manages the electric power to be made to the electric furnace. The signals from at least :2 devices among these devices are inputted to a fuzzy inference arithmetic unit 15. The degree of progression of the melt-down of the scrap us determined by executing fuzzy inference in accordance with the membership function determined for the respective inputs in the fuzzy inference arithmetic unit 15 and is announced to the operator.

3. 发明专利

JPH03287773A MULTISTAGE PLASMA TREATMENT 失效
公开(公告)号：JPH03287773A
公开(公告)日：1991-12-18
申请号：JP8751290
申请日：1990-04-03
申请人： NIPPON STEEL CORP
发明人： HAKODA YOSHIKAZU , ISHIKAWA YOSHIYASU , TAKENOUCHI KOJI
IPC分类号： C23C16/50 , C23C16/54
摘要： PURPOSE:To form a good-quality film at a high rate and to improve the treating efficiency at the time of depositing a thin film on a strip substrate to be treated in a multistage treating chamber by progressively increasing the pressure, supplied power and gas flow rate as the operating condition toward the succeeding treating chamber from the preceding treating chamber and carrying out plasma treatment. CONSTITUTION:A strip substrate 8 to be treated is passed through the treating chambers 2a, 2b and 2c and treated with plasma as follows. Namely, a film highly adhesive to the substrate is formed in the chamber 2a with the low pressure, low power and low gas flow rate (however the film forming rate is low). The film forming rate is increased with the medium pressure, medium power and medium gas flow rate in the chamber 2b. A film is formed at a high rate with the high pressure, high power and high gas flow rate in the chamber 2c. In this multistage plasma treatment, a good-adhesion film is formed at a high rate unlike the conventional method, the treating time is reduced, and the productivity is improved.

4. 发明专利

JPH07280619A PRESSURE CORRECTION METHOD IN MEASUREMENT OF GAS FLOW RATE 失效
公开(公告)号：JPH07280619A
公开(公告)日：1995-10-27
申请号：JP6719894
申请日：1994-04-05
申请人： NIPPON STEEL CORP
发明人： TAKENOUCHI KOJI , HARA YOSHINOBU
IPC分类号： G01F15/02
摘要： PURPOSE:To facilitate the maintenance and repair while reducing the cost by calculating the pressure at a branch point based on an accurate flow rate of main pipe, calculating the pressure drop of branch pipe based on the calculation results and a flow rate signal from each flow rate detector for branch pipe, and then calculating the flow rate of gas flowing through the branch pipe accurately, thereby eliminating pressure detector for each branch pipe. CONSTITUTION:A pressure correction operating means 7 inputs a pressure signal SP along with a differential pressure signal SFO from a main pipe flow rate detector and outputs a main pipe flow rate FLO, and at the same time, determines the pressure at a branch 5 based on the SP and FLO. Pressure at the branch point 5 is operated again along with differential pressure signals SF1,..., SF3 from flow rate detectors 2-1,..., 2-3 and an operation result (smi) is delivered, as a pressure signal for correction, to a calculator 8. In the calculator 8, differential signals from the detectors 2-1,..., 2-3 are fed to an extraction unit 9 which outputs corrected branch flow rates FL1,..., FL-3. Consequently, the pressure can be corrected even if pressure detector for pressure correction is eliminated from each branch pipe.

5. 发明专利

JPH03207866A PLURAL-ELECTRODE TYPE PLASMA GENERATOR 失效
公开(公告)号：JPH03207866A
公开(公告)日：1991-09-11
申请号：JP71090
申请日：1990-01-08
申请人： NIPPON STEEL CORP
发明人： TAKENOUCHI KOJI , ISHIKAWA YOSHIYASU
IPC分类号： C23C16/50 , C23F4/00 , H01L21/205 , H01L21/302 , H01L21/3065
摘要： PURPOSE:To increase plasma density of the gap parts of the electrodes and to enhance treatment efficiency by providing a phase controller and performing the phase control of high-frequency voltage impressed to the electrodes for generating plasma. CONSTITUTION:High-frequency voltage is impressed to a plurality of electrodes 2a-d for generating plasma from the power sources 5a-d in the evacuated atmosphere. Plasma is generated between the electrodes 2a-d and the earth electrodes 3a-d and a base plate 7 to be treated is treated. In the plural-electrode type plasma generator, a phase controller 9 is provided and the phase of high-frequency voltage impressed to the electrodes 2a-d is controlled. Thereby the intensity of an electric field in the gap parts of the electrodes and the plasma density are increased and treatment efficiency is enhanced.

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