专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPS63262417A METHOD FOR HEATING IN DIRECT FIRING TYPE CONTINUOUS HEATING FURNACE UNDER NON-OXIDATION 失效
公开(公告)号：JPS63262417A
公开(公告)日：1988-10-28
申请号：JP9779487
申请日：1987-04-21
申请人： SUMITOMO METAL IND
发明人： OYA HIROSHI
IPC分类号： C21D1/00 , C21D1/52 , C21D9/00 , C21D9/56 , C21D11/00
摘要： PURPOSE:To enable non-oxidizing heating at good efficiency of fuel by holding a heating zone and a soaking zone to reducing atmosphere with

2. 发明专利

JPH01247529A METHOD FOR CONTROLLING DIRECT FIRING TYPE NONOXIDIZED FURNACE 失效
公开(公告)号：JPH01247529A
公开(公告)日：1989-10-03
申请号：JP7727588
申请日：1988-03-30
申请人： SUMITOMO METAL IND
发明人： EKOSHI HARUKI , OYA HIROSHI
IPC分类号： C23C2/02 , C21D1/76
摘要： PURPOSE:To stably prevent oxidizing of a heating material and to save the energy by adding air flowing rate multiplying the prescribed ratio to reduced gas flowing rate introducing into a direct firing type non-oxidized furnace, to air flowing rate for combustion in the combustion burner at preheating zone side. CONSTITUTION:A steel plate is passed through the preheating zone, direct firing type non- oxidized heating zone and soaking zone, in order, and heat-treated under reducing atmosphere, and surface oxide is reduced, removed an cleaned. In the above direct firing type non-oxidized heating furnace, in order to make inner part of the furnace under reducing atmosphere, reducing gas of H2, etc., is introduced in the furnace from the soaking zone at downstream side and flowed into the preheating zone through the heating zone. The air flowing rate for burning this multiplying the prescribed ratio to this reducing gas flowing rate is added to the air flowing rate for combustion blowing together with the fuel in the combustion burner. Further, this addition is executed to the combustion burner with relatively low temp. at the preheating zone side in plural burners in the non-oxidized heating zone. By this method, the steel plate is heated under reducing without any influence to air ratio of reducing gas at the non-oxidized heating zone and non-combustion gas is simply reduced, to obtain the energy saving.

3. 发明专利

JPH01127117A WINDING METHOD FOR HOT ROLLER STEEL STRIP 失效
公开(公告)号：JPH01127117A
公开(公告)日：1989-05-19
申请号：JP28337287
申请日：1987-11-10
申请人： SUMITOMO METAL IND
发明人： OYA HIROSHI
IPC分类号： B21C47/28
摘要： PURPOSE:To prevent the quality of a hot rolled steel sheet from deteriorating on account of quick cooling at its winding end part and the yield of the hot rolled sheet from lowering by fitting a thermal insulating sleeve to a mandrel in a winder for hot rolled steel sheet, heating it in advance to a specified temperature and then winding the hot rolled sheet. CONSTITUTION:When a rolled steel heated at a high temperature immediately after hot rolling is wound by a winder, the end part of the hot rolled sheet is brought into direct contact with the mandrel of the winder, cooled quickly, deteriorated in quality and the part is cut off and accordingly the yield of the hot rolled sheet is lowered. In this case, on the outer surface of the mandrel 6 is provided with a sleeve 1 consisting of the inside of an iron sheet cylinder 2 and insulating material 4 such as asbestos, etc., and the outside of an iron sheet cylinder 3, and the sleeve 1 is heated by an induction heating device 7 near a winding temperature of the hot rolled sheet, then, the heating device 7 is removed and the hot rolled sheet is wound. In this case, the thickness of the outside iron sheet cylinder 3 is made thicker than that of the hot rolled sheet or thicker than 3mm to prevent the quality deterioration based on the quick cooling of the point part to wind the hot rolled sheet.

4. 发明专利

JPS63127004A COMBUSTION METHOD IN FURNACE 失效
公开(公告)号：JPS63127004A
公开(公告)日：1988-05-30
申请号：JP27137086
申请日：1986-11-14
申请人： SUMITOMO METAL IND
发明人： TAKAHASHI TSUTOMU , OYA HIROSHI , NOSHITA SHIGETOMI , YAMAMOTO MITSUHIRO , KURIYAMA HISASHI , HORIKAWA HIROSHI , YOSHIDA SHUJI
IPC分类号： F23C6/04 , F23L15/00
摘要： PURPOSE:To realize a low air ratio combustion using a conventional burner, by providing a catalyst to promote combustion on the inlet side of a flue and by specifying the air ratio, in a method of combustion in a furnace in which an object to be heated, being set in the furnace, is heated by a combustion burner, and the heat of exhaust gas is recovered in the flue. CONSTITUTION:An object to be heated 2 is set in a combustion furnace 1, and the object 2 is heated by a combustion burner 3. A catalyst 5 is provided at the inlet of a flue 4 to promote combustion of unburnt gas, and the heat of exhaust gas is recovered by a heat exchanger 6. In the combustion burner 3, an excess air ratio (Q1/Q2) is to be determined as '1' when logical air flow rate to feed fuel is 'Q2', and the flow rate of actual feed air is 'Q1'. In combustion by a conventional burner 3 that is the burner in which fuel and air are separately fed into a combustion space at high velocity, unburnt gas and unreacted oxygen are produced when an excess air ratio is determined as '1'. However if high temperature is kept in unburnt combustion gas, the gas and the oxygen gradually react on each other to cause them burning. Therefore low excess air ratio combustion is logically possible if the length of a furnace body and that of a flue are very long.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式