The cause that causes tumor of rotary kiln knot has a lot of, and more complex, SBM machine writtens guarantee with some company rotary kiln tumour is an analysis to bring about the main reason of tumour of rotary kiln knot and solution, share below come out to consult for everybody.
Some company is mixed with heavy oil converter is gas mix the day that is fuel to produce product line of rotary kiln of 600 tons of active lime to be less than time of half an year in formal ignition put into production, should plant 18 manage knot tumor to 26m serious, in the cinnamon stock with large circuit of the felt on firebrick, ply can amount to 500mm left and right sides, both ends attenuates gradually. After kiln knot tumour, because smoke air current moves suffocate suffocate, kiln head negative pressure is reduced, kiln end negative pressure increases, achieve certain ply to make an appointment with 400mm left and right sides when tumour, create air gush grey appearance, when achieving 600mm left and right sides or above, empty tolerance is insufficient, gas combustion is inadequate, CO content rises, o2 content drops, serious will bring about the accident blowouts inside kiln, must Monday second drop in temperature reduction of output discharges tumour. This gives production of product line of rotary kiln of this company lime to bring serious effect, accordingly, invite SBM machine expert to analyse reason of tumour of rotary kiln knot, try to locate a means of settlement.
1, heavy oil by sparge device pulverization, exterior accumulating increases significantly, each oil drop is the radiate inside fireplace and furnace and convection to pass warm-up of hot action place, begin to evaporate from the surface, aerification, air diffuses all round support undertake burning. Because impurity of 250# heavy oil is much and viscosity is big, pressure of advantage vapour discharge is low, cause burner pulverization to won't do cent, catch fire rate is slow, combustion time is long, make blaze distributings dispersive, blaze grows inhomogenous, blaze faint, wave to upside kiln wall, discover dribble phenomenon even, oil is drippy can make on stock fluid photograph quantity increases, form local high temperature, tumor of easy knot manages in high temperature.
2, limestone is a kind of natural deposit cliff, its foreign matter origin basically is the interlining in the impurity that natural limestone oneself contains and ore body did not come off the impurity of clean interfuse. The impurity of silt of limestone raw material that user of a lot of rotary kiln purchases the much, quantity that contain silicon proportion of tall, granuality is large, affected the normal roast of kiln furnace, make pink of the mine inside kiln is in 10% above. Dust attends reaction more easily inside kiln, melt felt, kiln wall forms kiln tumour more easily. Dust capacity is more, common matter content is higher, also jump over easy knot tumour.
3, the premise condition that roast takes temperature is knot tumour, temperature is higher, the material of low melting point in the stock inside kiln fuses more easily turn into fluid photograph, felt is on kiln wall, and temperature is jumped over tall, the specific ingredient in stock and kiln line produce chemical reaction, create material of low melting point, temperature is highest manage tumor of the easiest knot, knot tumour is the most serious also.
4, the crucial equipment that rotary kiln burner is roast process, this company uses burner of heavy oil burner formerly, it is head of much emptier gun (planar burner) , burner eject blaze is faint, the quantity of heat of generation passed kiln wall too much, make kiln wall and stock produce fluid photograph form, cause stock and line brick mutual felt. Head of blaze of together with burner is done not have a little deflection expects the face erodes, the line of center of blaze edge rotary kiln of burner to the eject inside furnace, at this moment blaze is on line of the center inside furnace to be in generation to heat up flue gas also edge center eject. Do not arise to flinch directly to limestone layer move, the gush of quantity of heat of blaze writtens guarantee to kiln wall easy generation tumour.
Above is SBM expert the case study to tumour of rotary kiln knot, later development we will continue to explain rotary kiln to written guarantee tumour settles way, the welcome continues to pay close attention to.
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