CN2383024Y - Burning heavy oil forward and backward flow type grain drier - Google Patents

Abstract

The utility model relates to a combustion heavy oil forward and backward flow type grain drier, which comprises a hot-blast furnace composed of a furnace body, a combustor, a fan and a main combustion chamber, and a drying tower composed of a tower body and a hoisting machine. The utility model is characterized in that the hot-blast furnace is also provided with a heavy oil device for supplying combustion., a multiple combustion device, an air conveying device, a heat exchange mechanism arranged outside the combustion chamber, and a waste-heat recovering device arranged outside a chimney, wherein, the heavy oil device is composed of a heavy oil tank, a furnace, an initial heating oil supply system and a heater The tower body is provided with a grain storage preheating section, forward flow drying sections, a tempering transposition section, backward flow drying sections, a tempering section, an aeration-cooling sections, and a mechanical grain discharge section. The utility model has the advantages of high efficiency, energy saving, high quality, low consumption, no pollution, etc., and is suitable for the performing operations of grain drying in grain depots.

Description

Combustion heavy oil concurrent-countercurrent formula grain drier

The utility model belongs to grain drying equipment, particularly a kind of energy-efficient combustion heavy oil (residual oil) concurrent-countercurrent formula grain drier.

At present, all multiple grain drier of having developed both at home and abroad, the structure that influence major parameter and be efficient, energy consumption, quality, expense mainly contains: the one, the hot-blast stove of generation drying medium, the 2nd, the type of drying tower.Hot-blast stove main fuel one is coal (domestic generally adopt), has that the thermal efficiency is low, the flue dust slag pollutes, the big grain dries quantity problem that influences of temperature fluctuation; The 2nd, oil (main fuel be diesel oil, abroad adopt numerous, No. the 275163rd, China's utility model, disclose December 5 1997 day for announcing a kind of " energy-saving oil-combustion hot-air furnace ", the patent No.: ZL96226409.1) exist expense height (domestic diesel oil present price be 2500 yuan/more than the T) to be difficult to promote and since stove direct-fired be that combustion gas all directly enters and gone in the baking grain, its nuisance inevitably pollutes food problem.Type: rower drier mainly contains mixed-flow, cross-flow type, downflow type, and according to 98 years problem investigate group testing results of country: existing energy consumption greatly promptly to fall a kg of water needs 1500 kilocalories with first-class problem.

The purpose of this utility model is to overcome above-mentioned shortcoming, according to heavy oil (is that crude oil is through refining aviation vapour, diesel oil, remaining residual oil such as common vapour, bavin, coal, machine oil) oil sources is better, 1000 yuan of present prices/lower below the T, calorific value is with the suitable situation of diesel oil, and a kind of efficient height, energy-conservation especially, baking grain quality is good, the oven dry expense is low combustion heavy oil concurrent-countercurrent formula grain drier now are provided.

The utility model combustion heavy oil concurrent-countercurrent formula grain drier, comprise by being hot-blast stove that cover the tubular body of heater, stove seat, burner, burning blower fan, main chamber, the outer field waste-heat recovery device of body of heater, the chimney that form form and the drying tower of forming by tower body, elevator, electric-control system, be characterized in: combustion heavy-oil hot-air stove also comprise heavy oil tank, full-automatic steam boiler, just heat oil supply system, reheater composition supply to fire the heavy oil device.Heavy oil tank is by being contained on the fangs, the oval heavy oil tank tank body of outer attached heat-insulation layer, last oiler is provided with granular membrane, be provided with the double steam comb of six row in jar, terminal jar is circumscribed with thermodynamic trap, steam condensate (SC) sent back in the boiler water tank circulate, pot bottom is provided with and unloads the water blowdown apparatus, and a jar end face bottom is provided with the pipeline and mix steam pipework and carry out instantaneous heating of draining the oil.The full-automatic steam boiler in the combustion heavy oil device of combustion heavy-oil hot-air stove divides three road heating pipe lines through a minute drum b: the c road is through mixing oil pipe for the heavy oil tank heating, and oil pipe line is cleaned in the oil feed line point stokehold preheating of d road with water after the blowing out, and the e road supplies the heavy oil heating of unloading.For the first heating oil supply system in the combustion heavy oil device is to add heat-insulation layer by horizontal round can be contained on the fangs, be divided into heating clamber and fuel feeding chamber by granular membrane a in jar, heating clamber is provided with electric heater b, automatically control start and stop by temperature sensor c and attemperating unit, the fuel feeding chamber pumps into reheater by the attached overflow valve of oil pump e through chip filter f, pressure-reducing valve g through filter d.After with heavy oil by temperature required through pressure maintaining valve send into be connected on the wallboard of stokehold with the burner of secondary air distribution device, with the air-supply of burning blower fan,, make oil and the full and uniform distribution of air by mixing in forcing, directly contact fully, fully mixed aerosol is sent into the combustion chamber.The burning blower fan firmly is located on the basis, blows to burner and three wind pushing mechanisms through the air butterfly valve.Burner Annex II time air distribution device is connected on the wallboard of stokehold with bolt.The stokehold wallboard is securely fixed on end seat and the body of heater front end face.Square-outside and round-inside shape main chamber adopts special exotic material to make, and is sitting in the end with stokehold wallboard location bottom and takes, and center and burner center are consistent and are fixed on wallboard back, stokehold and body of heater front end.The combustion chamber of paying of tubular is made in the main chamber back with special heat proof material, before under after indoor the going up, the surface temperature that staggers when the multiple burners work of 6 semi-round ring shapes is housed all can reach more than 800 ℃ and two the tunnel enter three multiple air-supply arrangements of subsidiary combustion chamber about dividing, thereby having formed has enough air capacities, the enough reaction time is arranged, enough ignition points is arranged, and makes the combustion gas of entering the room must reach completing combustion.Outside in main and auxiliary combustor also is provided with heat exchange mechanisms, its front end is provided with granular membrane, the centre is provided with a plurality of rib-type smoke pipes, support with the double a plurality of Crossed Circles in front and back, Heat Room will be connected into inside and outside the stove, with at a high speed distinguished and admirable of the negative pressure of air-heater institute required airflow, become pure hot blast to send in the tower heat heat exchange of stove and use.The body of heater front upper place is provided with the chimney of row's combustion gas, and the combustion gas in the stove to the stokehold end, is pooled to the annulus flue after go in the chimney air-introduced machine discharge atmosphere through a plurality of rib-type heat exchange in stove rear end smoke pipe.Be equipped with cover tubular waste-heat recovery device at chimney and body of heater outside, the waste heat of chimney and body of heater is recycled through the burning blower fan.Be provided with the furnace pressure control valve in the stove back upper place and regulate furnace pressure for igniting.Being provided with interim conciliation of hot blast register air feed temperature at the stove trailing flank uses.Above-mentioned stove integral body is seated in stove and takes.Combustion heavy-oil hot-air stove point stove preheating after oil pressure, oil mass, blast, air quantity, oil viscosity, furnace pressure etc. on demand wind-warm syndrome comprehensively adjust to better points, can automatic long-play, make heavy oil reach completing combustion, heat energy makes full use of.Drying tower is made up of tower body, elevator, electric-control system: the zinc-plated insulation of square tower body shell adapts to open work, adopt little acute angle heavy in section pentagon horn shape box in the tower body, be provided with grain storage preheating section (attached level detector), following current from top to bottom successively and dry each section, tempering transposition section, adverse current and dry each section, delay section, ventilation and cool off each section, the mechanical grain (attached manual row's grain, moisture content on-line measurement) section arranged.The waste gas latent heat that concurrent-countercurrent is dried each section discharge reclaims by the angular tube of grain storage preheating section, each section of cooling that ventilate discharged the lower waste gas latent heat of relative humidity, adopts the insulation pipeline to utilize air-cooler malleation, machine room air-heater negative pressure to reclaim with filtering sedimentation device.Cat head and each section survey face are equipped with art and craft door and relevant work platform, cat ladder, guardrail.On the elevator initiatively winnowing pan belt pulley circumferential outer surface stud with the rubber layer of respective thickness, solved lifting grain because of the ice and snow problem of skidding; Following follower external peripheral surface adopts the first steel of many horizontal stripes to constitute flower-carrying type, and it is the line contact that flexible normal winnowing pan band contacts with wheel face, has reduced lifting grain fragmentation problem.Electric-control system all adopts duplicate protection to all motors of equipment, has avoided effectively because of transshipping overheated phase shortage burning motor phenomenon; Large-size machine is all adopted decompression starting, the impact of big electric current when having prevented to start; Steam boiler is an Automatic Control, and heating just is warm by the temperature automatically controlled start and stop of sensor with reheater oil; Grain temperature in the tower, each road hot blast temperature all detect automatically by sensor, and numeral shows that overtemperature is reported to the police automatically; Cat head material level, the grain moisture content on-line measurement of baking back, the control of machinery row grain all concentrate on the electric control operation platform and grasp.

The advantage of the utility model combustion heavy oil concurrent-countercurrent formula grain drier: the one, efficient: following current is dried available higher wind-warm syndrome and rapidly high water content grain is dropped to 20%, and the adverse current oven dry is met with the most dried hot blast and descending grain and can be overcome following current and dry and be difficult to fall 20% following moisture content problem.Fall a kg of water about 1000 kilocalories that consume energy, fall kg of water power consumption more than 1500 kilocalories low 1/3rd than other mixed-flow, cross-flow type, downflow type type.The equipment interruption of service is few, and reliability is good, and automaticity height, life-span are long, more adapts to roasted grain simultaneously, and controllability is strong.The 2nd, energy-conservation: combustion heavy-oil hot-air stove has reached completing combustion, is the emerging combustion heavy-oil hot-air stove that does not have cigarette fat fully, and heat energy has obtained changing fully making full use of, and is a leap on the heavy oil combustion history, is individual the breakthrough with combustion heavy oil oven dry grain.The 3rd, high-quality: the medium hot blast temperature of oven dry usefulness is stable, can be controlled within ℃ scope of temperature required ± 2, has stopped owing to big paste grain, the stove problem of catching fire, collapse that causes of wind-warm syndrome fluctuation, and it is normal to dry by the fire the grain color and luster that, and does not have burnt grain, the quality better stuck with paste, and is even.Percentage of damage is low, pollution-free, noise is little, and every environmental protection index and safety devices have all reached the GB requirement.The 4th, low consumption: the price of heavy oil only is a diesel oil 40%, and power consumption is low, personnel selection is few.Three in grain of baking (fuel, electricity, artificial) expenses are conventional low about 30%, and equipment takes up an area of few, and heavy oil tank only is coal yard ground 1/tens, and the oil burner machine room only is half of coal furnace area, and corresponding capital expenditure can lack 50%; The maintenance of equipment expense is low, and is low by 2/3rds than coal furnace maintenance of equipment expense, is comparatively ideal grain drying device.

Fig. 1 is the overall structure view of combustion heavy oil concurrent-countercurrent formula grain drier.

Fig. 2 is the front view of horn shape box (36).

Fig. 3 is the left view of Fig. 2.

Fig. 4 is the front view of active winnowing pan belt pulley (38).

Fig. 5 is the left view of Fig. 4.

Fig. 6 is the front view of following follower (39).

Fig. 7 is the left view of Fig. 6.

Below in conjunction with description of drawings embodiment:

Fire heavy oil concurrent-countercurrent formula grain drier, form by combustion heavy-oil hot-air stove and concurrent-countercurrent formula drying tower two large divisions and see (Fig. 1).It is 18-60m that the heavy oil tank of hot-blast stove (1) is made for oval outer attached heat-insulation layer capacity with the Q235 steel plate ³Be seated in jar and take, establishing in last oiler a diameter 500mm, the high 180mm has lid on the granular membrane, and jar inside is provided with six with 2 inches pipes and lists down double steam comb, and end goes out jar and is circumscribed with thermodynamic trap c.Steam condensate (SC) got back in the water tank circulate, pot bottom is provided with and unloads water blowdown apparatus d, and a jar end face bottom is provided with drain line b and is mixed with steam pipework carries out instantaneous heating.Steam boiler (2) is a fully automatic operation, and steam enters branch drum b, divides the c road to clean oil pipe line, heating when the e road supplies heavy oil to unload with water after mixing the heating of drain line oil supply tank, the oil feed line point stokehold preheating of d road, blowing out.Just heating oil supply system (3) is located on the fangs by the external attached heat-insulation layer of horizontal round can, be divided into heating clamber and fuel feeding chamber by granular membrane a in jar, be provided with 6KW electric heater b in the heating clamber, automatically control start and stop by temperature sensor c and attemperating unit by required oil temperature, pot bottom pumps into reheater (4) with overflow valve through chip filter f pressure-reducing valve g by oil pump e through filter d before being provided with and unloading water blowdown apparatus h, fuel feeding, after heavy oil is sent into burner (7) by temperature required through pressure maintaining valve, the burning remaining oil is got back to just in the heating tank by oil return pipe i.Burning blower fan (5) firmly is located on the basis, blows to burner (7) and three multiple air-supply arrangements (13) through air butterfly valve (6).Burner (7) Annex II time air distribution device is fixed by bolts on the stokehold wallboard (8).Stokehold wallboard (8) is securely fixed on stove seat (23) and the stokehold end face.Main chamber (10) adopts the special exotic material of square-outside and round-inside type to make, and bottom is sitting on the base (9) with location, stokehold wallboard (8) back, and center and burner center are consistent and are fixed on the stove Inner Front End.Circular subsidiary combustion chamber (11) is made with special heat-resisting non-scale corrosion resistant plate in main chamber (10) back, the indoor 6 multiple burners of semi-round ring shape (12) made with special oxida-tion-resistant steel plate that are provided with, during work temperature all can reach more than 800 ℃ and three multiple air-supply arrangements (13) thus formed and enough air capacities arranged, the enough reaction time is arranged, enough ignition points are arranged, make the combustion gas of entering the room must reach completing combustion.Also be provided with heat exchange mechanisms (15) in the outside of subsidiary combustion chamber (11), front end is provided with granular membrane (26), the centre is provided with a plurality of rib-type smoke pipes (14), supporting (22) with the double a plurality of Crossed Circles in front and back connects into ectosome in the stove Heat Room, penetrates jet flow and smoke pipe fin convection type, utilizes air-heater (24) institute required airflow negative pressure with the width of cloth, height is stated distinguished and admirable, becomes pure hot blast to send in the drying tower through hot-blast pipe line (27) the heat heat exchange of stove and uses.The front upper place of body of heater is provided with chimney (18), and the combustion gas in the stove is pooled to the annulus flue after chimney (18) goes in air-introduced machine (20) the discharge atmosphere through a plurality of rib-type heat exchange in stove rear end smoke pipe (14) to the stokehold end.Be equipped with sleeve waste-heat recovery device (19.16) penetrates the width of cloth of the waste heat of chimney (18) discharging combustion gas and body of heater at heat and recycles through burning blower fan (5) in chimney (18) and body of heater outside.Regulate furnace pressure when being provided with furnace pressure control valve (17) in the stove back upper place for the some stove.Two sides are provided with the interim conciliation of wind-warm syndrome adjusting device (21) air feed temperature behind stove.Above-mentioned integral body is seated in stove and sits on (23).Tower body adopts little acute angle heavy in section pentagon horn shape box (36) to see (Fig. 2 Fig. 3) concurrent-countercurrent with waste heat recovery single tower see (Fig. 1), and the zinc-plated insulation of square tower body shell adapts to open work.Being provided with the attached level detector of grain storage preheating section (29), following current in the tower from top to down dries each section (30), tempering transposition section (31), adverse current and dries each section (32), delay section (33), adverse current ventilate cooling each section (34), the attached manual row's grain of mechanical grain discharging section and moisture content on-line measurement (35).Concurrent-countercurrent is dried the angular tube that the waste gas latent heat of each section discharge gives hot arc (29) by grain storage and is reclaimed.(28) be the cold wind air inlet, each section of cooling that ventilate discharged the lower waste gas latent heat of relative humidity and adopted the insulation pipeline to utilize the malleation of air-cooler, the negative pressure of machine room air-heater to reclaim with filtering sedimentation device (25).Cat head and each section side are equipped with art and craft door (41) and have the corresponding work platform to protect and block, cat ladder, have guaranteed cleaning and replacing consumable accessory in the tower.Elevator (37) is gone up the rubber layer that winnowing pan belt pulley (38) circumferential outer surface initiatively studs with respective thickness and is seen (Fig. 4 Fig. 5 A), has solved lifting grain because of the ice and snow problem of skidding; Following follower (39) external peripheral surface adopts many horizontal stripes unit steel to constitute the flower formula of blocking to see that (Fig. 6 Fig. 7 a), it is that line contacts that flexible normal winnowing pan band contact with wheel face, has reduced lifting grain fragmentation problem.Electric-control system is seen (Fig. 1 40), and all motors are all adopted duplicate protection, large-size machine is adopted decompression starting, and steam boiler (2), primary heater (3) pass through the temperature automatically controlled start and stop of sensor with the oily Wen Jun of reheater (4).Grain temperature, each road hot blast temperature all detect numeral demonstration automatically by sensor in the tower, and overtemperature is reported to the police automatically.The cat head material level detects, dries by the fire back grain moisture content on-line measurement, the control of machinery row flow vector all concentrates on the grasp of electric control operation platform.The drying machine of different size is according to treating capacity and precipitation range.Hop count, the size of drying tower cross-sectional area and the height of tower body elevator of the dry cooling section of hot-blast stove, air-heater, air-cooler, concurrent-countercurrent of corresponding specification can be selected for use, thereby 5H series combustion heavy oil can be formed along contrary cis grain drier.

Claims (1)

1, a kind of combustion heavy oil concurrent-countercurrent formula grain drier, comprise by being hot-blast stove that the body of heater that forms of cover tubular, stove seat (23), burner (7), the blower fan (5) that burns, main chamber (10), the outer field waste-heat recovery device of body of heater (16), chimney (18) form and the drying tower of forming by tower body, elevator (37), electric-control system (40), it is characterized in that:

A, combustion heavy-oil hot-air stove also comprise by heavy oil tank (1), full-automatic steam boiler (2), just heat oil supply system (3), reheater (4) is formed for firing the heavy oil device, be contained in oval heavy oil tank (1) tank body on the fangs, last oiler is provided with granular membrane, be provided with the double steam comb of six row in jar, terminal jar is circumscribed with thermodynamic trap c, pot bottom is provided with and unloads water blowdown apparatus d, and a jar end face bottom is provided with drain line b and mixes steam pipework and carry out instantaneous heating;

The full-automatic steam boiler (2) in the combustion heavy oil device of b, combustion heavy-oil hot-air stove divides three road heating pipe lines through a minute gas bag b: the c road is through mixing oil pipe for heavy oil tank (1) heating, the oil feed line point stokehold preheating of d road, clean oil pipe line after the blowing out with water, the e road is for advancing the heavy oil heating of unloading;

First heating oil supply system (3) in the confession combustion heavy oil device of c, combustion heavy-oil hot-air stove, adding heat-insulation layer by horizontal round can is contained on the fangs, be divided into heating clamber and fuel feeding chamber by granular membrane a in jar, heating clamber is provided with electric heater b, automatically control start and stop by temperature sensor c and attemperating unit, the fuel feeding chamber is through filter d, pump into reheater (4) by the attached overflow valve of oil pump e through chip filter f, pressure-reducing valve g, after with heavy oil by temperature required through pressure maintaining valve send into be connected on the stokehold wallboard (8) with the burner (7) of secondary air distribution device;

D, square-outside and round-inside shape main chamber (10) adopt special exotic material to make, be contained on the base (9) with following seat the in stokehold wallboard (8) location, main chamber (10) back is made cylindrical shape with special heat-resisting non-scale stainless steel material and is paid combustion chamber (11), indoor go up the back down before, stagger three multiple air-supply arrangements (13) that 6 tabular multiple burners of semi-round ring shape (12) and branch left and right sides two-way enter pair combustion chamber (11) be housed;

E, also be provided with heat exchange mechanisms (15) in the outside of subsidiary combustion chamber (11), its front end is provided with sieve steel filter (26), the centre is provided with a plurality of rib-type smoke pipes (14), support (22) with the double a plurality of Crossed Circles in front and back, ectosome in the stove is connected into Heat Room, by air-heater (24) hot blast is sent in the drying tower through hot-blast pipe line (27), also be provided with cover tubular waste-heat recovery device (19) in the outside of chimney (18);

Adopt little acute angle heavy in section pentagon horn shape box (36) in the f, tower body, be provided with grain storage preheating (attached level detector) section (29), following current from top to bottom successively and dry that each section (30), tempering transposition section (31), adverse current are dried each section (32), delay section (33), cooling each section (34) and the mechanical grain (attached manual row's grain, moisture content on-line measurement) section (35) of arranging ventilate.

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