会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 43. 发明专利
    • Reducing gas heating method and apparatus
    • JP3889827B2
    • 2007-03-07
    • JP516096
    • 1996-01-16
    • 千代田化工建設株式会社
    • 泰正 森田孝明 毛利良亮 清水
    • C01B32/50C21B9/00C21B9/08F27B3/20
    • PROBLEM TO BE SOLVED: To prevent the reduction in thickness caused by carbon deposition on the inner surface of a gas heating pipe and carburization-embrittlement of the heating pipe by rapidly heating at the temp. raising velocity having a prescribed value or higher in the dangerous temp. range easily depositing the carbon from a CO-containing reducing gas. SOLUTION: At the time of heating the reducing gas containing CO, the carbon is deposited by reaction 2CO←→CO2 +C. This deposited carbon is stuck onto the heating pipe and reacts with iron, and carburizing phenomenon is caused and the inner surface is embrittled and worn. This reaction is exothermic reaction, and according to the chemical equilibrium theory, the reaction is progressed to the right side as the temp. becomes lower, the carbon is easily deposited but on the other hand, since the reaction velocity is not high in the low temp., the dangerous temp. zone easily depositing the carbon exists. This range depends on the gas composition (particularly CO and CO2 concns.) and the operation pressure, but, this temp. is generally not over about 350 deg.C, at the time of heating this gas at >=1000 deg.C/sec temp. raising velocity, since the staying time of the gas is extremely short, such as
    • 44. 发明专利
    • METHOD FOR REPAIRING HOT STOVE
    • JPH0949008A
    • 1997-02-18
    • JP20081595
    • 1995-08-07
    • NIPPON STEEL CORP
    • KOMATSU SHINDOI YOSHIHITO
    • C21B9/08C21B9/10
    • PROBLEM TO BE SOLVED: To safely execute repair of a hot stove with a good working efficiency by holing the furnace top shell of the hot stove from the outer part, charging and filling up foaming resin into a damaged cavity part from this opening part, temporarily arranging a working scaffold on the foaming resin and executing the repair from the upper part to the lower part in order. SOLUTION: After stopping and cooling the hot stove, firstly, a dome manhole 7 is opened to a checker brick depression part and the damage part of a partition wall brick 6, and the foaming styrene 10 is charged into the checker brick depression part and filled up to the upper surface level of the checker brick 9. Then, the working scaffold is temporarily arranged on this foaming styrene 10, and further, the foaming styrene 10 is charged into a combustion chamber by utilizing this working scaffold and filled up to the upper end level of the partition wall 6 in order. Successively, after executing the repair by disassembling the partition wall brick 6 and the remaining checker brick 9 to a fixed height, the foaming styrene 10 is removed off to a position needed to the following disassembly and the working scaffold is shifted downward. The inner part of the hot stove is repaired from the upper part to the lower part in order while repeating this procedure.
    • 46. 发明专利
    • Hot stove for blast furnace
    • 热锅炉
    • JPS59159906A
    • 1984-09-10
    • JP3328783
    • 1983-03-01
    • Kawasaki Steel Corp
    • AMANO SHINOBU
    • F24H3/06C21B9/00C21B9/08
    • C21B9/00
    • PURPOSE:To improve the efficiency of a hot stove and to stabilize the operation of a blast furnace by using ceramic tubes in a heat exchanging section and incorporating a direct heat exchanging system which permits continuous blasting without change-over. CONSTITUTION:A hot stove is constituted of a combustion chamber 12 which generates heating gas, an introducing chamber 18 for heating gas which is provided in the upper part, a discharging chamber 22 for heating gas which is provided in the lower part, and many ceramic tubes 26 which communicate the chamber 18 and the chamber 22. The spaces between the tubes 26 are used as flow passages for the air to be heated, thus forming a heat exchanging chamber 16. The air fed through a cold air pipe 28 from a fan 27 enters the flow passages between the tubes 26 and is heated while the air passes in the flow passages. The heated air is blown continuously through an annular tube 32 and a tuyere 34 into a blast furnace 2.
    • 目的:提高热风炉的效率,并通过在热交换部分使用陶瓷管来稳定高炉的运行,并结合直接热交换系统,允许连续爆破而无需转换。 构成:热风炉由产生加热气体的燃烧室12,设置在上部的加热气体用的引入室18,设置在下部的气体的排出室22和多个陶瓷 管26连通腔室18和腔室22之间。管子26之间的空间被用作待加热空气的流动通道,从而形成一个热交换室16.空气管道28中的空气从风扇 27进入管26之间的流动通道,并且在空气通过流动通道期间被加热。 加热的空气通过环形管32和风口34连续吹入高炉2。