Company technology center is paying close attention to the latest technology trends that more than heat generates electricity from beginning to end, tracking the development direction of this technology, will adopt ceaseless project practice, perfect pure low temperature hard more than heat generates electricity technology, improve the applicability of this technology, stability and economy, make this technology is in in microtherm beyond heat generates electricity the promotion that the respect gets bedding face is accumulated and application.
1.Core technology:
1) optimizes parameter of heating power system, in the light of cement kiln beyond heats up a characteristic, choose double press boiler, use more than heat as far as possible, consider steam engine efficiency at the same time, improve systematic thermal efficiency.
2) optimizes systematic configuration, the setting differs twice parameter beyond heat boiler, assure to be able to make full use of more than hot resource. Use filling steam to coagulate especially steam type turbine, make full use of waste gas beyond is hot, improve the efficiency inside turbine at the same time, increase unit grog electricenergy production further, in order to suit new-style the demand that exhaust emission temperature reduces dry method kiln ceaselessly.
3) undertake transforming to having AQC. The system uses system of advanced DCS distributing center control. Install bypass of engine of flue gas, steam, basically the stable production of the cement craft product line with original noninterference.
This technology passes domestic industry expert to prove, belong to domestic initiate, the technology is reliable, fit Chinese national condition. This technology has declared national patent. The system uses homebred device entirely, the advantage on the price is very clear, be equivalent to importing the 50 ％ of facility cost only, market prospect is very capacious.
2. technological process:
Pure low temperature of product line of large cement working a way more than heat generates electricity equipment system, install in kiln head double press more than heat boiler, assume entirely communal heat function and make all and low-pressure steam, make steam of partial high pressure at the same time, use vertical nature to circulate, velar mood heating surface, contain two drum; From above to below of flue gas pipeline passes boiler, be in through decorating early or late evaporator of the high-pressured superheater of boiler interior, high pressure, low-pressure superheater, low-pressure evaporator and communal heater; Kiln head installed corresponding nature to sedimentation before more than heat boiler the device that divide ash; Of kiln head boiler conduct heat the canal is helix wing piece canal.
In kiln end the setting basically is assumed make high-pressured steam kiln end more than heat boiler, use vertical nature to circulate, velar mood heating surface, contain a drum, flue gas flows outside boiler heat exchanger tube, from above to below passes boiler; Of kiln end boiler conduct heat the canal is coiled pipe coiler; Still install organic instrument brace up hit dust collector. Undertake transforming to system of flue gas of intake air heater. Flue gas of high temperature of eduction of former intake air heater, one part is decreased through gush water lukewarm hind, introduce partial air cooling again, the flue gas that mixture epigenesis controls for 225 ℃ enters raw material to grind stoving raw material, another part flue gas is discharged directly; Introduce high temperature flue gas kiln end directly now more than heat boiler, use kiln remaining part after more than heat boiler absorbs its quantity of heat, the flue gas that falls to be controlled for 225 ℃ enters raw material to grind stoving raw material, undertake removing dust through dust catcher next, discharge through chimney finally.
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