Change furnace one of crucial equipment that technical properties changes furnace is synthetic ammonia plant. As production large change, a paragraph structure more hasten is complex, heat pipe increases hundreds Ken, operation requirement requirement is strict, is average temperature in tube wall 900? 950 ℃ , operation pressure is as high as 3.9MPa(40kgf/Cm2. ) aborning controls good technology character, be normal production want a condition. Strict control technical properties changes the technical properties of furnace one paragraph to be as follows: (1) operates temperature, to endothermic reaction, raise temperature, accelerate reaction, the carbon dioxide in asking to reduce exit to enrage (CO2) and firedamp (CH4) temperature of the entrance when be being operated from this is 510 ℃ , 823 ℃ control outlet temperature, tube wall high temperature is 899 ℃ . (2) handles pressure, the bulk after reaction increases, low pressure is helpful for reaction, is operation pressure maintained in 2.94? 3.43Mpa(30? 35kgf/cm2)(3) water carbon is compared, maintain in 3. 5: 1 the left and right sides. (4) airspeed, basically suffer catalyst active to reach change a canal to conduct heat on average intensity limitation, airspeed takes 1800Nm3 raw material to enrage / (H) of M3 accelerant · . (5) changes furnace to conduct heat on average intensity, rise change a canal to conduct heat on average intensity is aggrandizement one main measure of Duan Lu, but suffer change tubal capable person the limitation of qualitative, furnace structure and catalyst function, this stage furnace takes smooth soaking intensity to be H) of · of 55731kW/m2 47920kcai/ (m2. Change furnace and splitting decomposition furnace the numerical value that the general provision of fireproof material construction changes the ply that brick of body of each place build by laying bricks or stones seams furnace and splitting decomposition furnace to should accord with a regulation. Change the ply that brick of body of each place build by laying bricks or stones seams furnace and splitting decomposition furnace to want to accord with standard build by laying bricks or stones to build the tolerance that changes furnace and splitting decomposition furnace to should accord with the numerical value of relevant provision. The metallic surface of the steel structure that build by laying bricks or stones builds the tolerance that changes furnace and splitting decomposition furnace to want to be contacted with lining and equipment should keep clear of float becomes rusty and smeary. The quality that divide rust should accord with design regulation, when the design random times, should accord with active state level " what cleanness of surface of finishing of the rolled steel before besmear Fu coating spends is visual assess " the regulation of the Sa2 in GB/T8923 or St2 class. Boiler setting thermal insulation board should try a store inside furnace, the anchorage firmware position that always should imprint on thermal insulation board according to trying a store, appropriate uses electric drill to get the installing hole chamfer of anchorage firmware. When appearance of thermal insulation board needs to machine, should be in board on lofting draws a line, should use special tool cut. The big cutting ply of ply direction should not exceed 5mm. Firebrick of boiler setting heat insolation should wet build by laying bricks or stones. Answer between brick and thermal insulation board clingy, do not get stuff fireproof slop. Burner firebrick the central line of body of build by laying bricks or stones should the central line coincide with metallic burner, should its tolerance is 0? 3mm. The firebrick before build by laying bricks or stones is built should beforehand build by laying bricks or stones is built, number. Hearth burner firebrick the side outside body of build by laying bricks or stones and hearth are fireproof and pouring answer between makings, firebrick fill is fireproof blanket of fiber of pottery and porcelain. Fireproof and as pouring as heat insolation the surface of fiber of the thermal insulation board of makings contact, adiabatic firebrick, fireproof pottery and porcelain should brush a bitumen or take other and waterproof step. Heat insolation is fireproof and pouring after makings form removal, should have visual examination. When its crack width is less than 3mm, what can not undertake repairing;3mm above is interstitial, but when do not fall off or coming off, ; of fill of blanket of fiber of usable and fireproof pottery and porcelain is become heat insolation is fireproof and pouring makings when having the break that fall off or has 10mm above, fireproof material repairs the indeterminate form that uses relevant material to pledge. When repairing, the heat insulation that should handle break is fireproof and pouring makings authentic combines face or thermal insulation to boiler setting, form echelon, the amount of shown anchorage firmware do not answer little at 2. Good to already was being installed heat pipe should take safeguard, do not get attaint and flyblow. Lining construction should be in have a requirement, after affirm qualification and dealing with working procedure to hand over certificate, undertake. Fireproof material occurrence craze, fall off, easy how to wear away to do? Want to solve a problem thoroughly, need to be dug from germ, the analysis gives real reason, flourish Cheng Naicai is engaged in be able to bear or endure service of timber production, research and development is old, can solve all sorts of difficulty problems of liner of furnace of high temperature kiln, welcome broad new old friend to seek advice reach technical communication.
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