CN1084959A

CN1084959A - Unit two height temp. material single cylinder cooling machine system

Info

Publication number: CN1084959A
Application number: CN 92111920
Authority: CN
Inventors: 陈茂林
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-30
Filing date: 1992-09-30
Publication date: 1994-04-06

Abstract

The invention belongs to Unit two height temp. material single cylinder cooling machine system of cement industry, it has adopted the ultrashort single cylinder cooling machine of two covers, makes two, three, four high, medium and low temperature wind of extraction easy, and has shock chilling function; The low temperature wind emptying of the present invention after sedimentation, heat exchange is free from environmental pollution, and equipment is simple, easy to manufacture, the running rate height, and operating maintenance is convenient; Can reach heat recovery rate more than 80%, not be higher than 60 ℃ of environment temperatures, 100 kilograms of grog/rice of single footpath volume production from the tube clinker temperature ³The time, be fit to all large, medium and small type rotary kiln production systems.

Description

Unit two height temp. material single cylinder cooling machine system

The present invention relates to building material industry, belong to Unit two height temp. material single cylinder cooling machine system in the cement sectors rotary kiln production grog process.

At present, cement rotary kiln is produced in the grog process, cooling is adopted more single cylinder cooling machine, planetary cooler and the grate cooler etc. of a unit from tube high temperature chamotte, recuperation of heat.The deficiency of the single cylinder cooling machine of a unit is: cooling back clinker temperature all brings difficulty and is difficult for drawing the air-dry dry raw material of temperature conveying, grinding, storage, packing etc. still up to 150～400 ℃, and the barrel radiation loss is bigger; Excellent, the shortcoming of planetary cooler is close with the single cylinder cooling machine of an above-mentioned unit, can't extract tertiary air and is used for the outer shortcoming of decomposing of kiln but also have; The weak point of grate cooler is that low temperature hot blast emptying amount is big, increases electric precipitation and handles, and many consuming electric powers, heat energy, many investment goodses, and complex structure, framework take up an area of manyly, and operation is also complicated, and heat recovery rate has only 65%.

The purpose of this invention is to provide a kind of Unit two height temp. material single cylinder cooling machine system, make from the tube clinker temperature only highlyer 60 ℃ than environment temperature, heat recovery rate reaches more than 80%, and equipment is simple, operating maintenance convenient, and running rate height, investment are low.

Purpose of the present invention solves by the technical scheme of following Unit two height temp. material single cylinder cooling machine system.

Unit two of being made up of the coal powder injection pipe of high temperature preheating stove, a upright tube dore furnace, rotary kiln, kiln hood and high temperature preheating stove coal powder injection pipe, upright tube dore furnace, rotary kiln coal powder injection pipe etc. are the temp. material single cylinder cooling machine system just, its chamotte cooler is that two cover diameters are greater than being with efficient dore furnace rotary kiln diameter, equal the suspended preheater kiln, ultrashort monotubular height temp. material cooling unit less than hollow, wet-process rotary kiln, both sides at high temperature chamotte single cylinder cooling machine charging chute are provided with nozzle, spray low temperature wind on the grog of chute at a high speed; Three times high temperature wind extracts and tangentially enters the coal dust air to fuel ratio dore furnace combustion heat supplying system of dore furnace bottom with the coal pipe ejection by the tertiary-air pipe above the kiln hood to rotary kiln.Middle temp. material by the high temperature chamotte single cylinder cooling machine rolls into low temp. material single cylinder cooling machine from chute, height temp. material single cylinder cooling machine is warm wind by the connection of sealed attachment chamber and in extracting, one grinds from the airduct to the coal, raw mill wind, high temperature preheating stove heating system is formed in the coal dust mixed combustion that its two middle Wen Sici airduct by connection side, chamber tangentially enters high temperature preheating stove bottom and coal pipe ejection; The quick water of single-stage tubular type is installed in the back of low temperature chamotte cooler, low temperature wind-heat interchanger and centrifugal type draught fan, extract low temp. material single cylinder cooling machine postmedian low temperature wind and make its sedimentation through exhaust column, pass through the evacuated tube emptying after the heat exchange, the quick water of single-stage tubular type in addition, the high-temperature water that the exchange of low temperature wind-heat interchanger produces can be sprayed onto height by sparge pipe, on the low temp. material single cylinder cooling machine discharge end grog, not only cooled off grog but also reclaimed the heat of high-temperature water, wherein the steam of high temperature chamotte single cylinder cooling machine generation enters two, tertiary air, the steam that low temp. material single cylinder cooling machine produces is made low temperature wind by exhaust column and is taken away.

Accompanying drawing is a structural representation of the present invention, and accompanying drawing also makes an abstract.

The present invention is further illustrated according to drawings and Examples below

As shown in the figure, when the grog up to 1350 ℃ from rotary kiln 6 discharge ends when kiln hood 14 free-fallings are to chute 11, being subjected to coal grinds wind nozzle 13 spraying cold air plays shock chilling function at a high speed, make the relatively stable crystalline phase of formation stable rapidly, guarantee cement quality, and grog on chute 11 because shock chilling function, also can make its viscosity diminishes, the unlikely chute dross that causes, stop up, three high temperature wind extract and tangentially enter the coal dust air to fuel ratio dore furnace combustion heat supplying system of dore furnace 3 bottoms with coal pipe 4 ejections by the tertiary-air pipe 5 above the kiln hood 14 to rotary kiln 6 simultaneously; After the smooth groove 11 of grog rolls into high temperature chamotte single cylinder cooling machine 15, grog is subjected to ladder lining board refractory brick effect in the similar ball mill of single cylinder cooling machine 15 front half-ends, with latter half of lifting blade effect, at a high speed rotation be crashed to pieces and free-falling form the material curtain and with adverse current low speed pass two, tertiary air carries out heat exchange fast, in chute 11 and monotubular, grog with the part heat pass to two, tertiary air, the refractory brick of wall around also the part heat being passed to, and the high-strength heat-insulating light-weight brick with heat radiation give two, tertiary air; Height temp. material single cylinder cooling machine is warm wind by 9 connections of sealed attachment chamber and in extracting, one grinds from airduct 8 to coal, raw mill wind, and high temperature preheating stove heating system is formed in the coal dust mixed combustion that its two middle Wen Sici airduct 7 by connection 9 sides, chamber tangentially enters high temperature preheating stove 2 bottoms and coal pipe 1 ejection; When grog is walked to the cylindrical shell afterbody, except that aforementioned effect, be subjected to sparge pipe 10 sprays again down from single-stage tubular type water, the shock chilling function of the high-temperature water of low temperature wind-heat interchanger 22 high-temperature water outlet pipes 25, the part heat of itself is evaporated rapidly, using a grog has reduced to about 700 ℃, become middle temp. material, this material rolls in the low temp. material single cylinder cooling machine 17 through connecting chamber 9 smooth grooves 16, grog is subjected to the lifting blade effect in the tube, middling speed rotation is crashed to pieces and free-falling form the material curtain and with adverse current low speed pass two, three, four times wind carries out heat exchange fast, the same with above-mentioned high temperature chamotte single cylinder cooling machine, grog and tube internal perisporium, lifting blade all conducts heat to two, three, four wind, take part low temperature wind owing to exhaust column 18 at this at the cylindrical shell middle part, make low velocity wind become middling speed wind adverse current and pass the material curtain, heat exchange is more strong, to the cylindrical shell afterbody, except that aforementioned effect, grog is subjected to the sparge pipe 19 sprays shock chilling function of high-temperature water down again, itself most of heat is evaporated rapidly, make from the tube temperature to not being higher than 60 ℃ of environment temperatures, even exhausting is brought thin grog particle into low temperature exhaust column 18, also can fall in the cooler, and thick grog enters and together imports fines after disintegrating machine 21 is pulverized and slip into conveying device from the elongated sealing below exhaust column 18 a section in monotubular.

The present invention is owing to adopt Unit two height temp. material monotubular cooling system, make two cover single cylinder cooling machine diameters all greater than being with efficient dore furnace rotary kiln diameter, equal the suspended preheater kiln, less than hollow, wet-process rotary kiln, it is low to have fluid resistance, the characteristics of a relative unit single cylinder cooling machine time lengthening of the air time of staying; And it is easy to extract two, three high, medium and low temperature wind, and the effect that makes the grog quenching is arranged, and can prevent chute dross, obstruction; Low temperature wind emptying after sedimentation, heat exchange is free from environmental pollution; The high-temperature water that utilizes the quick water of single-stage tubular type, low temperature wind-heat interchanger to be produced, one can be sprayed on the height temp. material single cylinder cooling machine discharge end grog to sparge pipe 10,19, has promptly cooled off high temperature chamotte and has made its evaporation reclaim the heat of grog again; Conduct adds entry or other domestic water from outlet pipe 25 to boiler on another road.

Present device is simple, and is easy to manufacture, the operation, easy to maintenance, have the investment low, energy consumption is low, heat recovery rate reaches the characteristics more than 80%; From the tube clinker temperature only for being higher than about 60 ℃ of environment temperatures, can be directly into the cement grinding mill grinding. 100 kilograms of grog/cubic meters of unit volume output³Hour, be applicable to all large, medium and small type rotary kiln production systems, be that cooling is from the ideal scheme of tube grog. The present invention can all sink to underground building, to avoid noise, pollution etc.

Claims

1, a kind of cement industry cooling is from Unit two of tube high temperature chamotte height temp. material single cylinder cooling machine system, mainly form, it is characterized in that by rotary kiln (6), kiln hood (14), high temperature preheating stove (2), upright tube dore furnace (3) and high temperature preheating stove coal powder injection pipe (1), upright tube dore furnace coal powder injection pipe (4), rotary kiln coal powder injection pipe (12) etc.:

A) two cover diameters are greater than efficient dore furnace rotary kiln, equal suspension preheater kiln, ultrashort monotubular height temp. material cooler (15), (17) less than the hollow wet-process rotary kiln, be provided with nozzle (13) in the both sides of the cold machine charging of high temperature chamotte monotubular chute (11), high temperature tertiary-air pipe (5) extracts tertiary air from kiln hood (14) and tangentially enters coal pipe (4) the ejection coal dust air to fuel ratio dore furnace heating system of dore furnace (3) bottom with dore furnace (3);

B) high and low temperature grog single cylinder cooling machine connects by the connection chamber (9) of sealing, and from the connection chamber of sealing is extracted warm wind, one grinds from airduct (8) to coal, raw mill wind; Its two from connect the side, chamber Wen Sici airduct (7) tangentially enter the heating system of coal dust mixed combustion composition high temperature preheating stove of coal powder injection pipe (1) ejection of high temperature preheating stove (2) bottom and high temperature preheating stove;

C) in the back of cooler (17) the quick water of single-stage tubular type, low temperature wind-heat interchanger (22) and centrifugal type draught fan (23) are installed and after the low temperature wind of the low temp. material single cylinder cooling machine postmedian of exhaust column (18) extraction makes its sedimentation, heat exchange, pass through evacuated tube (24) emptying;

D) high-temperature water of the quick water of single-stage tubular type, low temperature wind-heat interchanger (22) exchange generation can pass through sparge pipe (10), (19) be sprayed onto on the grog of height temp. material single cylinder cooling machine (15), (17) discharge end, not only cool off grog but also reclaim heat, wherein the steam that in high temperature chamotte single cylinder cooling machine (15), produces enter two, tertiary air, the steam that produces in the low temp. material single cylinder cooling machine (17) is taken away as low temperature wind by exhaust column (18).