In process of current steely enterprise agglomeration quantity of specific power consumption is next to puddling working procedure, take steely industry total specific power consumption probably according to not complete count 9% to 12% . And waste gas of agglomeration of domestic steely company more than heat reclaims use basically have 3 kinds of kind: The first kind is the steam that produces more than heat boiler use at drive steamer aircrew to generate electricity; is the 2nd kind direct the combustion air that ignition regards as furnace after course of will useless flue gas is purified or using the 3rd kind at warm-up compound; is will useless flue gas through, merge into entire plant steam manages a network, replace boiler of partial coal fired. The article will work actually according to the author, union is academic, burn balance heat to generate electricity with respect to the steely enterprise of the first kind of our country the technology is done elaborate. According to the author not complete count, more than 10 agglomeration beyond that our country already built at present heats up generation set to involve 19 agglomeration plane of the left and right sides in all, capacity of its aircraft of generation set general assembly achieves 137MW. Such OK saying, steely enterprise burns balance heat to generate electricity it is mature that the technology has tended in domestic application, had had the requirement of comprehensive promotion. Especially as double the breakthrough that presses a technology, raised more than heat to answer effects to lead greatly, for steely enterprise agglomeration more than heat generates electricity technical promotion more created a condition. Above paragraphs has been narrated, more than heat compares steely industry agglomeration much, its temperature also can be in 400 ℃ of 300 ～ , enough is used undertake more than heat generates electricity. The more than hot distributinging characteristic that links machine of steely agglomeration refrigeration in this author, the more than heat that puts forward a kind to improve generates electricity system, use agglomeration mine whereabouts to enter cooling plane alone paragraph high temperature beyond is hot (400 ～ 500 ℃ ) will heat (high temperature) overheat vapour, next this part the low temperature in more than hot resource and middle more than heat (360 ℃ of 300 ～ ) mix use, will heat microtherm overheat vapour, produce saturated steam, vapour drives turbine roll, drive a dynamo to generate electricity thereby. Its specific flow is, pump of water supply of water supply classics enters more than heat boiler, after classics waste gas heats, one part turns into overheat vapour, enter turbine to do work generate electricity. Criterion another part classics low temperature of more than heat boiler paragraph after heating, generation overheat or saturated vapour enter turbine corresponding low pressure does work into steam mouth generate electricity. Low-pressure drum furnishs by middling pressure boiler feed pump after economizer of low pressure of condenser water classics, low-pressure drum is had from deoxidize function, with respect to meeting implementation a complete heating power circulates. Steely enterprise burns balance heat to generate electricity flow is specific following place show: In its characteristic particular system burns balance now whole of character of hot heat source is inferior, microtherm part occupies scale big; to because of,be in in agglomeration production the moving uncertainty of equipment, short time stays machine is inevitable, cause agglomeration flue gas discontinuous sex. Still have in agglomeration process, what go up in agglomeration machine as agglomeration mine is firing the situation is different, temperature of its flue gas is different also. We should notice this. Steely enterprise burns balance heat to generate electricity the technology is current although get of steely enterprise love, but in agglomeration annulus cold machine more than heat generates electricity technical respect still has certain technical difficulty, this also brings about a few enterprises to flinch to it. Its more outstanding technology difficulty is to generate electricity the system is right advocate steam character requirement is very strict, and system of present agglomeration system heating power is very flabby calm, fluctuant limits is in waste gas temperature ± 100 ℃ above, cause advocate the wave motion of steam temperature exceeds bid, the security of serious minatory turbine, stability and life. Have again even if burn balance to heat up generation set to run efficiency not tall. Agglomeration beyond heats up generation set to all have particular demand to flue gas discharge and temperature, in moving actually, moving efficiency suffers the many sided effect such as operating mode of agglomeration equipment size, production, more than heat reclaims working parameter of the system is fluctuant, the pressure of output, temperature, discharge changes subsequently, the moving efficiency that brings about generation set is not tall. Still have agglomeration besides flow of cooling machine waste gas is very large, at the same time its high temperature paragraph and in can using a part lukewarm the average temperature of paragraph of waste gas is between 330-450 ℃ , available the more than low temperature in heating up resource to belong to more than heat, quality is not high, reclaim use difficulty bigger. The company that the author is in is used namely double press a system to generate electricity, know through old moving analysis double pressure systematic generating capacity is very high, but cannot the investment that evasive is it is large. In this author union works actual, what with respect to some steely enterprise agglomeration more than hot system uses is double press systematic program, talk about it generate electricity technology. Will original waste gas of cooling machine high temperature introduces an agglomeration double pressure press boiler a passageway, vapour of generation high pressure 2. 35MPa, 400 ℃ , at the same time will original about 350 ℃ introduce waste gas of high temperature of machine of 2 agglomeration refrigeration double press boiler 2 passageways, add superheater of a passageway to export flue gas to come vapour of warm-up high pressure, produce low-pressure steam 0.
49MPa, 280 ℃ , the maximum pressure that generates and low-pressure vapour are passed double press business of turbine of filling steam pure condensation to generate electricity. 2 1 date, flue gas that are heated remove dust simply with dust catcher of type of simple and easy fender first before entering more than heat boiler remove dust rate 50% . Double press more than heat boiler to export smoke Wen Jiang to be controlled for 420 ℃ , after removing dust through dust catcher, enter annulus cold plane again through fender door via circular fan. The need before circular fan enters the mouth is again compensatory the air cooling of 15% is entered, with intromit annulus the wind force of air cooling can reach original numerical value. When breakdown of more than hot stove flashboard door is shut, the cooling wind that annulus cold machine needs still from former machine of air cooling of 2 1 date, annulus enters the mouth, right now fender air door but switch arrives a sky, reinstate internal state. Pass the analysis of above paragraphs, we are knowable double passageway double the efficient stair that pressed plan to achieve low grade the sources of energy truly is used, make quantity of heat reclaims the biggest change, solved the successional poor problem that more than hot generation set runs. The project still used low temperature double press more than heat boiler and distinctive agglomeration annulus cold secret to seal a method, solved more than heat to generate electricity exert oneself be less than a design value, can use the issue with little quantity of heat. CNC Milling