Injection rate adjustment system of pulverized coal injection tank
A regulation system, pulverized coal injection technology, applied in blast furnace details, blast furnace parts, furnaces, etc., can solve problems such as deviation of injection rate from normal values, and achieve the effects of rapid and effective adjustment, low price, and low cost of spare parts
Active Publication Date: 2016-02-03
ZENITH STEEL GROUP CORP CO LTD
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Problems solved by technology
[0005] The technical problem to be solved by the utility model is: in order to solve the problem that the injection rate occasionally deviates from the normal value due to various disturbances in the facilities in the prior art that adjust the injection rate by changing the tank pressure
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[0026] Now in conjunction with accompanying drawing, the utility model is described in further detail. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model.
[0027] Such as figure 1 , figure 2 As shown, a pulverized coal injection tank injection rate adjustment system includes a tank body 105, a charging pipeline 101 arranged in the upper center of the tank body 105 for loading pulverized coal, and a The pressure filling pipeline 103 and the exhaust and pressure relief pipeline 102, the pressure measuring instrument 104 arranged on the upper side of the tank body 105, the weighing device 106 arranged in the middle of the tank body 105, and the The coal delivery pipeline 110, and the air supply pipeline 109 communicated with the coal delivery pipeline 110, the bottom boiling pipeline 108 for charging gas fluidized pulverized coal is ...
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The invention relates to the field of gas delivery, and in particular relates to a blowing rate adjusting system for a pulverized coal blowing tank. The blowing rate adjusting system comprises a charging pipeline, a pressure charging pipeline, an exhaust pressure relief pipeline, a tank body, a weighing and pressure measuring device, a tank cone adjusting pipeline, a bottom boiling pipeline, a gas supply pipeline and a coal conveying pipeline, wherein the tank cone adjusting pipeline comprises an angle seat quick-switching valve, a cleaning orifice and a pressure measuring instrument; the bottom boiling pipeline comprises an adjusting valve, a stop valve and a normally open orifice; the gas supply pipeline comprises an adjusting valve, a stop valve and an angle seat quick-switching valve which is parallel to the adjusting valve. By adopting the blowing tank, the problems of large coal discharge fluctuation and intermittent coal break at the initial stage of pulverized coal injection tank replacement are solved, the blowing rate of coal which is difficult to blow can also be quickly and stably adjusted, and meanwhile, the adverse condition of a poor boiling fluidization effect caused by the coal seepage and accumulation of a boiling chamber is eliminated.
Description
technical field [0001] The utility model relates to the field of gas transportation, in particular to a pulverized coal injection tank device for fluctuating and speed-adjusting blast furnace injection rate. Background technique [0002] At present, blast furnace pulverized coal injection has become an essential part of the ironmaking system. Coal injection has the advantages of greatly reducing coke ratio, cost saving, abundant raw materials and reducing environmental pollution. At the same time, coal injection can also adjust the furnace temperature and balance the working conditions, providing an important guarantee for the smooth operation of the blast furnace. [0003] There are many types of coal injection injection systems, and the suitable selection methods according to the site include direct coal injection system and indirect coal injection system, series tank system and tank combining system, multi-pipe injection and main pipe plus distributor methods, etc. Gene...
Claims
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IPC IPC(8): C21B7/00
Inventor 陈小忠郭利平张俊杰张兴卢维强吴跃华薛明飞宋电话
Owner ZENITH STEEL GROUP CORP CO LTD