One, boiler of salt of frit of introduction of frit salt furnace is with 3 yuan or salt of binary and inorganic frit (potassium nitrate, sodium nitrate, inferior sodium nitrate the mixture that wait) to conduct heat medium, with coal, fuel or light gas to heat for fuel, use pump of frit salt loop compulsive fluid photograph circulates, after carrying heat energy the equipment that use heat, then returns the boiler of special type industry that heats afresh. Whole boiler system is main by frit salt the part such as system of circulatory system, firebox and heat addition system is comprised. Temperature of frit salt job arrives in 250 ℃ 580 ℃ .
2, the construction of furnace of salt of frit of classification of frit salt furnace is coil type commonly, namely frit salt flows inside the coil of edge shaft. As the progress of the progress that industry produces and technology, had formed the classified method that be as follows at present.
The 2.1 circular means according to frit salt furnace are classified
Can divide circulate for nature frit salt furnace and furnace of salt of compulsive loop frit;
2.2 according to heat source different
Can divide for coal fired, fuel, light gas, report to heat the breed such as frit salt furnace;
The 2.3 configuration according to frit salt furnace are classified
Can divide wear furnace of type frit salt for cylinder form, square box form and canal;
The 2.4 whole according to frit salt furnace place formal classification
Can divide for furnace of vertical frit salt and furnace of horizontal frit salt.
Sketch map
Structure of furnace of salt of frit of horizontal cylinder form pursues
Structure of furnace of posture frit salt pursues
3, firebox of frit salt furnace deploys program with fireproof material
The combustion system of furnace of salt of coal fired frit by furnace platoon, firebox, the composition such as orgnaization of coal of drafting apparatus, wait, taphole orgnaization, chimney.
Fuel (gas) the combustion system of frit salt furnace is compared relatively simple, basically wait for composition by burner, explosion proof door, chimney.
3.1 combustion aperture and roof material ask character
Its use temperature for a long time to be 1350 ℃ , and need to have good thermal shock stability, use Molaishi is pouring makings.
Material of 3.2 firebox bottom asks character
Bottom uses tall aluminous wear-resisting pouring makings.
3.2 canals top, gush lights Kong Zhou to surround heat preservation material to ask character
The place with thinner ply of coil coping heat-insulation layer only 250mm. Want to assure to be used for a long time already, should make roof fender thermal drop comes again 100 ℃ are the following.
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Plan of fireproof material configuration contains roof of firebox of frit salt furnace group of blanket of zirconium fiber blanket, siliceous aluminous fiber, tall aluminous fiber piece, group of the fiber that contain zirconium piece, tall aluminium is qualitative pouring makings.
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