CN104507878B - Sludge treatment device and processing method - Google Patents

Abstract

Cement making equipment (200) is utilized to process mud in the processing equipment (100) of mud.Sludge treatment device (100) possesses: the drying machine (1) making dewatered sludge be dried；The dry mud Handling device (3) the dry mud being dried by this drying machine being carried at least one in the calcining furnace (35) of cement raw material and sintering furnace (such as rotary furnace (40))；With drying machine aerofluxus Handling device (4) in the dust arrester (66a) of the exhaust gas treatment device (66) that the aerofluxus coming from drying machine (1) is carried to cement raw material grinding machine (65).The dust carrying out coming from the aerofluxus of drying machine by the dust arrester (such as bag filter (66a)) of the exhaust gas treatment device (66) of complete set of cement equipment processes.

Description

Sludge treatment device and processing method

Technical field

The manufacture equipment that the present invention relates to the use of cement processes the technology of mud.

Background technology

In recent years, in developing country, the generation amount of house refuse and downflow sludge etc. increases, it is desirable to it is carried out health Processing, the especially process of downflow sludge day by day becomes problem.Fill after generally downflow sludge is by dehydration, but carrying out In the case of landfill, there is the worry of pollution and stench etc. that subsoil water occurs, preferably carry out burning disposal.Since Yi Wang In existing incinerator, add a small amount of dewatered sludge carry out mixed combustion, but the construction cost of incineration plant is high, for Burn and need bigger energy, the most actually the burning disposal of downflow sludge not progress.

To this, there is the used heat manufacturing equipment attempting to be conceived to cement, by utilizing this used heat real with low cost with this The now trend of the burning disposal of sewage sludge.Record in as the patent documentation 1 of an example without drying and dehydrating mud, And burn after direct plungeing into cement kiln and calcining furnace etc. with the state of aqueous slurry shape.

Also, recorded after dewatered sludge is dried by oil temperature drying machine in patent documentation 2, it is not necessary to go oil removing Divide and put into and make it burn to rotary furnace.When dry mud, produced aerofluxus is directed into the afterbody of rotary furnace and decomposes smelly Gas composition, and the oil of volatilization contained in aerofluxus divides burned.

Additionally, recorded in the patent documentation 3 relevant to the application of the applicant, dewatered sludge is being done by air-flow Dry machine is dried, is carried in calcining furnace and the rotary furnace etc. of cement the processing method making it burn.In this place in reason method, Coming from the aerofluxus of the pneumatic drier exhaust feed heater in being arranged at calcining furnace after heated deodorize, one part circulates To pneumatic drier, remainder is expelled to its exterior by after heat exchanger.

Prior art literature:

Patent documentation:

Patent documentation 1: No. 3969018 publications of Japanese Patent Publication No.；

Patent documentation 2: No. 4231739 publications of Japanese Patent Publication No.；

Patent documentation 3: Japanese Unexamined Patent Publication 2002-273492 publication.

Summary of the invention

The problem that invention is to be solved:

But, dewatered sludge being direct plungeed into rotary furnace with high-moisture percentage state as aforementioned patent literature 1 and In the case of in calcining furnace etc., there is the worry that temperature reduces partly because of the evaporation latent heat of moisture, the most actually can The amount of the mud processed is the fewest.

On the other hand, in the case of processing after by drying sludge as patent documentation 2, patent documentation 3, come It is treated as problem from the aerofluxus in its drying machine.That is, containing substantial amounts of steam in drying machine aerofluxus, therefore by bag Dry dust collector as formula filter carries out existing problems when dust processes, if using wet collector the most unavoidably to set The increase of standby cost.

Also, the drying machine aerofluxus containing substantial amounts of steam is being directed into rotary furnace as aforementioned patent literature 2 During afterbody, there is the thermally equilibrated worry destroyed from calcining furnace to preheater, its result is possible to cause the increase of fuel consumption With the bad influence to cement making equipment such as Cement Quality reduction.

About this point, containing the oily timesharing volatilized in dry exhaust as described in Patent Document 2, relax because its burning Aforementioned thermally equilibrated problem, but the equipment cost of oil temperature drying machine is the highest, and exist and have to guarantee and mud always The difficulty of the waste oil of the amount that treating capacity is corresponding.Although discharging drying machine it addition, describe in patent documentation 3 to its exterior The increase gas part of aerofluxus, but the dust about this discharge gas processes not record.

In view of problem points as described above, it is an object of the invention to the manufacture equipment utilizing cement and process mud Time, in the case of cement manufacturing process not being produced bad influence, also, do not producing because foul smell and dioxin etc. are drawn In the case of the problem risen, it is possible to process the mud of q.s, meanwhile suppress the rising of cost.

The means of solution problem:

The present invention with possess on calcining furnace, sintering furnace and cement raw material grinding machine and exhaust channel thereof arrange dust arrester The processing equipment of mud that is disposed adjacent of cement making equipment be object, possess: make the drying machine that dewatered sludge is dried；Will be logical Cross the dry mud that the dry mud that this drying machine is dried is carried at least one in described calcining furnace and described sintering furnace Handling device；With the drying machine aerofluxus carrying that the drying machine aerofluxus produced in described drying machine is carried in described dust arrester Device；The dust being carried out described drying machine aerofluxus by dust arrester is processed.

In the sludge treatment device of said structure, the dewatered sludge first making moisture content high is dried by drying machine, because of This can make its burning in the calcining furnace of cement making equipment and sintering furnace etc..Dry mud has enough caloric values, because of This not only will not produce bad influence to the burning in calcining furnace and sintering furnace etc., and can produce its maintenance burnt favourable Effect.Dry mud is granular, therefore has in the calcining furnace of the aerofluxus coming from sintering furnace in circulation, also it is easy to ensure that fire The burning time, it is also possible to the generation of suppression dioxin, it is also possible to reduce and produced in cement manufacture by the ammonia contained by dry mud Raw nitrogen oxides.

On the other hand, the drying machine aerofluxus produced in drying machine is by being arranged on the exhaust channel of cement raw material grinding machine Dust arrester carry out dust process.Containing substantial amounts of steam in drying machine aerofluxus, but at the aerofluxus of cement raw material grinding machine Reason device generally imports substantial amounts of aerofluxus from the preheater of cement raw material etc., by the mixing with this aerofluxus, water vapor concentration Reduce, therefore can carry out dust process by dry dust collector.

I.e., it is possible to make substantial amounts of dewatered sludge dried, in the situation that the manufacturing process of cement will not be produced bad influence Under mixed combustion in calcining furnace and the sintering furnace (kiln) etc., and can also be by the drying machine aerofluxus containing substantial amounts of steam Cement making equipment is utilized to carry out dust process, such that it is able to the rising of suppression cost.

But, make the aerofluxus after drying sludge to give out a foul smell, therefore can also from described drying machine to described dust The carrying path of the described drying machine aerofluxus of device arranges deodorization device.Deodorization device can consider to be carried out by catalyst etc. The various devices of absorption, chemical deodorize etc., but can also be more than drying machine heating exhaust gas to set point of temperature to carry out The device that deodorize processes.For example, it is also possible to be as described in aforementioned patent literature 3 utilize calcining furnace and the sintering of cement raw material The deodorization device of the high-temperature portion heating drier aerofluxus of stove etc..

From make on cement manufacturing process affect minimization from the viewpoint of, it is also possible to arrange make fuel burn in stove and Heat the hot-air stove of described drying machine aerofluxus as described deodorization device.In this case, it is also possible to will occur at hot blast Stove is heated to the drying machine aerofluxus of such as more than 650～700 DEG C utilize as the thermal source of drying machine.As such, it is possible at dust Before process, the temperature of drying machine aerofluxus is reduced to suitable temperature, thus it is advantageously ensured that the durability of dust arrester.

Can make drying machine be formed with by after the heating that deodorization device (hot-air stove) is discharged described be dried The structure of the dry gas drying dewatered sludge that machine aerofluxus is heated.Be dried with gas such as can by with heating after dry Dry machine aerofluxus mixes and directly heats, it is also possible to indirectly heated by the drying machine aerofluxus after heating.Also, such as can also be in dirt Mud processing equipment possesses: from the carrying path bifurcated of the drying machine aerofluxus by drying machine to deodorization device (hot-air stove), And a part for drying machine aerofluxus is delivered to as dry gas the current return circuit of drying machine；With make from deodorization device discharge Heating after drying machine aerofluxus carry out the heat exchanger of heat exchange with the drying machine aerofluxus flowing into current return circuit.

According to said structure, drying machine exhaust cycle can be substantially made to be used in the dry of dewatered sludge to drying machine Dry, and by along with this be dried gas part of being increased by after deodorization device (hot-air stove) heating deodorize at cement raw The dust arrester of material grinding machine carries out dust process.In other words, for drying machine aerofluxus, only by the gas to environment to be discharged Increase part carries out heating deodorize, therefore can suppress the consumption of fuel in deodorization device (hot-air stove).Additionally, make to add The drying machine aerofluxus of the high temperature after hot deodorize is for being recycled to the intensification of the drying machine aerofluxus of drying machine, and can reduce dust The temperature of the drying machine aerofluxus processed.

In addition it is also possible to possess using part or all of the dry mud that is dried by drying machine as fuel to deodorize The fuel supply system that device (hot-air stove) supplies.To cool down in cement making equipment by sintering also, can also possess The air of the aerofluxus of the cooler of the cement sinter of stove sintering or the heating exhaust gas of cooled device supplies as combustion air Combustion air feedway to deodorization device (hot-air stove).In either event, deodorize all can be suppressed to fill Put the consumption of fuel in (hot-air stove).

For another angle, the present invention relates to the Treatment of Sludge carried out in cement making equipment and sludge treatment device Method, including: be dried mud by the drying machine of sludge treatment device；Dry mud (being hereinafter referred to as dried mud) is removed It is transported at least one in the calcining furnace of cement making equipment and sintering furnace；With the drying machine aerofluxus that will produce in drying machine Dust arrester carrying on the exhaust channel of cement raw material grinding machine being arranged at cement making equipment, by this dust arrester from described Drying machine aerofluxus is removed the dust being dried mud.

Invention effect:

As it has been described above, the processing equipment of the mud according to the present invention, can make after drying sludge at cement making equipment Mixed combustion in calcining furnace etc., and process drying machine by the dust arrester being arranged on the exhaust channel of cement raw material grinding machine Aerofluxus, even if thus process substantial amounts of mud, also cement manufacturing process will not be produced bad influence, and suppress the upper of cost Rise.

Accompanying drawing explanation

Fig. 1 is sludge treatment device and the system diagram manufacturing equipment of cement of the first embodiment according to the present invention；

Fig. 2 is according to being dried mud to hot-air stove supply and making wherein to flow into the second enforcement shape of cooler aerofluxus The figure being equivalent to Fig. 1 of state；

Fig. 3 is situation about will be applied in the complete set of cement equipment of another form according to the sludge treatment device of the present invention Figure (variation 1)；

Fig. 4 is situation about will be applied to according to the sludge treatment device of the present invention in the complete set of cement equipment of another form Figure (variation 2)；

Fig. 5 is situation about will be applied to according to the sludge treatment device of the present invention in the complete set of cement equipment of another form Figure (variation 3)；

Fig. 6 is situation about will be applied to according to the sludge treatment device of the present invention in the complete set of cement equipment of another form Figure (variation 4).

Detailed description of the invention

Embodiment hereinafter, with reference to the accompanying drawings of the present invention.Fig. 1 is the sludge treatment device according to the first embodiment 100 and the manufacture equipment of complete set of cement equipment 200(cement that is disposed adjacent with this sludge treatment device 100) total system Figure.Sludge treatment device 100 shown in the left side of Fig. 1 is to be dried the high dewatered sludge of moisture content and shape by pneumatic drier 1 Become the equipment of the dry mud that moisture content is low.This dry mud in complete set of cement equipment 200 with cement raw material mixed combustion.Can , in the case of without the complete set of cement equipment 200 arranged is carried out bigger transformation, sludge treatment device 100 is built On complete set of cement equipment 200 side.It addition, from the viewpoint of the abatement of prime cost and energy loss, in order to shorten by after Pipe arrangement (the 3rd exhaustor 28) that the drying machine aerofluxus stated carries to complete set of cement equipment 200 from sludge treatment device 100 and The pipe arrangement of the pipe arrangement (dry powder carrying pipe 19) that the dry powder of mud is carried to complete set of cement equipment 200 from sludge treatment device 100 Length, preferably makes sludge treatment device 100 adjacent with complete set of cement equipment 200.But, if it is possible to lay this frugally A little pipe arrangements (dry powder carrying pipe 19 and the 3rd exhaustor 28), then can also be at sludge treatment device 100 and complete set of cement equipment 200 Between there are other works (such as road, skyscraper, wall, river etc.), or be separated by between them.

Sludge treatment device-

Sludge treatment device 100 possesses: for being dried the pneumatic drier 1 of mud；Store will pass through air-flow in advance The sludge tank 2 of the dewatered sludge that drying machine 1 is dried；For separate the dry mud that is dried by pneumatic drier 1 with The cyclone (cyclone) 12 of drying machine aerofluxus；Tank 13 is received for accommodating the dry powder of dry mud；For dry mud is removed The dry mud Handling device 3 being transported in the calcining furnace 35 of complete set of cement equipment 200；Hot blast for heat drying aerofluxus occurs Stove 22；Pump-down process with the cement raw material grinding machine 65 for the drying machine aerofluxus of heating being carried to complete set of cement equipment 200 Drying machine aerofluxus Handling device 4 in device 66.

In sludge tank 2, as an example, the mode such as send to move into and to store downflow sludge by land and industrial waste is dirty The dewatered cake (hereinafter referred to as sludge cake) of the mud of mud etc..Sludge tank 2 is connected with the sludge pump 5 sucking and discharging sludge cake, dirty Mud cake passes through mud force pipe 6 force feed to pneumatic drier 1 from sludge pump 5.The operating rate of sludge pump 5 can change, thus The unit interval quantity delivered of dewatered cake to pneumatic drier 1 can be regulated.

Pneumatic drier 1 is received the mixing feed machine 14 of bottom of tank 13, disintegrating machine 10 by being arranged at dry powder, connects mixing The pipe arrangement of feeding machine 14 and disintegrating machine 10, the drying tube 11 being connected disintegrating machine 10 and cyclone 12 are constituted.By mud force pipe 6 Force feed is supplied to mixing feed machine 14 to the sludge cake of pneumatic drier 1.In mixing feed machine 14, it is contained in dry powder and receives The dry mud (dry powder) of the powder in tank 13 mixes with sludge cake.For the mixture of sludge cake Yu dry mud, pass through Conditioning of mud cake and the combined amount of at least one in dry mud, regulate moisture content with this.As an example, sludge cake Moisture content is about 80%, in order to easily operate, and so that the moisture content of mixture reach 25～30% form regulation and mud The amount (circulation dry powder amount) of the dry mud of cake mixing.The mixture that have adjusted moisture content is transported to disintegrating machine 10.

It is to rotate the mixture with this broken sludge cake Yu dry mud by cage as an example of disintegrating machine 10. Mixture is fractured into the size of applicable pneumatic conveying drying.Disintegrating machine 10 is connected with the drying tube 11 extended upward.At drying tube Flow in 11 the dry gas (recyclegas) of high temperature as described later.By the broken mixture of disintegrating machine 10 and dry The dry gas blowing to top in dry pipe 11 accompanies, and is handled upside down along with the flowing of dry gas and is dried, and becomes The dry mud of powder.

The upper end of drying tube 11 is connected with cyclone 12.It is the high efficiency of Linden type as an example of cyclone 12 Cyclone.In cyclone 12, the dry mud centrifugation from drying machine aerofluxus flowed into from drying tube 11.Drying machine aerofluxus Come from the aerofluxus of pneumatic drier 1, the steam that containing dry gas, evaporates from mud, the dry mud of trace Dust etc..The dry mud separated is fallen in the dry powder reception tank 13 that the bottom with cyclone 12 is connected.Dry powder receives tank 13 Being dried mud one part and utilize as discussed above in the moisture content of sludge cake regulates, remainder is by dry mud carrying dress Put 3 to be used in the calcining furnace 35 of complete set of cement equipment 200.It addition, be dried mud be not limited to powder, it is also possible to be granular and Thin strip etc..

Also, dry powder receive the middle part of above-below direction of tank 13 be provided with identical with mixing feed machine 14 take out of dry A part for dry mud take out of feeding machine 15.The dry mud that tank 13 takes out of, example is received from dry powder by taking out of feeding machine 15 As moved in dry mud hopper 17 by the dry powder carrying implement 16 of conveyer etc..It is dried mud hopper 17 to play for temporarily storage Stay the function of the buffer storage of dry mud.

The moisture content being held in being dried the dry mud in mud hopper 17 is 10～about 15%, and this dry mud is permissible By pneumatic floating and carry.The metering feedway being provided with rotary valve etc. in the bottom of dry mud hopper 17 (is not schemed Show).Dry mud after metering utilizes air-flow Handling device 18 to be carried to complete set of cement equipment 200 by dry powder carrying pipe 19 In.This dry powder carrying pipe 19 extends to complete set of cement equipment 200 from sludge treatment device 100, the downstream of dry powder carrying pipe 19 Supply mouth with the dry powder of calcining furnace 35 to be connected.

The top of cyclone 12 is connected with downtake pipe 20, and the lower end of downtake pipe 20 is with hot-air stove 22 even Connect.This downtake pipe 20 is provided with the first exhaust aerator 21 for conveyer dryer aerofluxus.By cyclone 12 The drying machine aerofluxus separated from dry mud is expelled to downtake pipe 20, and sends into hot blast generation by downtake pipe 20 Stove 22.

Hot-air stove 22 play make in stove coal etc. fuel combustion and by drying machine heating exhaust gas to set point of temperature with On carry out the function of deodorization device of deodorize process with this.Specifically, hot-air stove 22 such as possess be arranged at round The burner 22a of one end (right-hand member of figure) of the shell of tubular.This burner 22a makes the micropowder from burning feedway 23 supply Carbon (can also be natural gas and heavy oil etc.) is burnt by the combustion air supplied by aerator 24, so that high temperature Burning gases (hot blast) spray to another side (left end of figure) of shell.The drying machine aerofluxus shrouded by these burning gases reaches The analysable temperature of Organic substance such as more than 650～700 DEG C, thus contained Organic substance realizes deodorize by thermal decomposition.

The other end (left end of figure) of hot-air stove 22 is connected with second exhaust pipe 25, and this second exhaust pipe 25 is from hot blast Producer 22 heat exchanger 26 imports burning gases and the drying machine aerofluxus of high temperature.On the other hand, downtake pipe 20 with from The circulation pipe 27(backflow road of bifurcated between first exhaust aerator 21 and hot-air stove 22) connect, this circulation pipe 27 is by warm Exchanger 26 is connected with disintegrating machine 10.

According to said structure, it is expelled to a part for drying machine aerofluxus for downtake pipe 20 before hot-air stove 22 Side shunts and flows into circulation pipe 27.The drying machine aerofluxus flowing into circulation pipe 27 and comes from hot-air stove in heat exchanger 26 The hot blast of 22 (that is, the burning gases of high temperature and drying machine aerofluxus) heat exchange and become the dry gas that temperature is the highest, and And it is back to disintegrating machine 10(i.e., pneumatic drier 1).Like this, be formed in drying machine 1 make drying machine aerofluxus (be dried use Gas) the circulation road circulated.And, the heat increased to make drying machine aerofluxus be heated deodorize in hot-air stove 22 Major part in heat exchanger 26, be supplied to recyclegas (dry gas), thus be used in dirt in pneumatic drier 1 Being dried of mud.

On the other hand, the remainder of drying machine aerofluxus of the part being back to pneumatic drier 1 is removed (that is, along with dirt Being dried of mud and the drying machine aerofluxus that increased) flow into hot-air stove 22.The drying machine aerofluxus flowing into hot-air stove 22 exists Hot-air stove 22 heats deodorize, and in heat exchanger 26 with drying machine aerofluxus (dry gas) heat exchange and temperature After reduction, flow out to the 3rd exhaustor 28 being connected with heat exchange 26.3rd exhaustor 28 becomes to cement from heat exchanger 26 Complete equipment 200 extends, and the drying machine aerofluxus carried by second exhaust aerator 29 is carried to cement raw material grinding machine 65 Exhaust gas treatment device 66 or its upstream side.It addition, second exhaust aerator 29 is not necessarily, it is also possible to complete by cement The air inducing of the air-introduced machine 62 of equipment 200 makes drying machine aerofluxus enter.

Above, it is stated that sludge treatment device 100 in, dry powder carrying implement 16, be dried mud hopper 17, air-flow carrying Device 18 and dry powder carrying pipe 19 constitute the dry mud of the calcining furnace 35 that dry mud is carried to complete set of cement equipment 200 and remove Shipping unit 3.Also, downtake pipe 20, second exhaust pipe 25 and the 3rd exhaustor 28 and first exhaust aerator 21 and second Exhaust blower 29 constitutes the drying machine aerofluxus of the exhaust gas treatment device 66 that drying machine aerofluxus is carried to cement raw material grinding machine 65 Handling device 4.It addition, in the example of fig. 1, the return duct that a part for drying machine aerofluxus is back in hot-air stove 22 is made 28a is to connect from the form of the 3rd exhaustor 28 bifurcated, thus saves the fuel of hot-air stove 22.

Cement making equipment-

Complete set of cement equipment 200 is to possess common NSP kiln (new suspension in the example of fig. 1 preheater kiln；Novel suspending preheating kiln) equipment.That is, complete set of cement equipment 200 possesses the suspension type as preheater Preheater (suspension preheater) 30, as the rotary furnace 40 of sintering furnace and the calcining furnace that is arranged between them 35.After cement raw material is preheated in suspension preheater 30, in calcining furnace 35, heating (calcining) is to about 900 DEG C, is returning With the high temperature sintering of about 1450 DEG C in converter 40.Cement sinter is transported to air hardening cooler (AQC from rotary furnace 40； Air quenching cooler) 50, chilling in AQC50 and become granular clinker, and then be transported to not shown Last manufacturing procedure.

Suspension preheater 30 is to be formed by connecting by multistage cyclone 31 array of spread configuration in the vertical direction Device.In each cyclone 31, the exhaust-gas temperature rising of the cement raw material high temperature by being blown into from subordinate.About the flowing of this aerofluxus, Circulate from calcining furnace 35 to the cyclone 31 of subordinate from the high-temperature exhaust air (hereinafter referred to as kiln exhaust gases) of rotary furnace 40 blowout, and And rise one by one in cyclone 31 and arrive the cyclone 31 of higher level, and flow out to exhaust line 60.

The aerofluxus flowed out by the cyclone 31 from the higher level of suspension preheater 30 it is provided with (following in exhaust line 60 It is referred to as SP aerofluxus) introduce and be sent to the air-introduced machine 62 of chimney 61.This air-introduced machine 62 is in order to by suspension preheater 30 and forge Burn stove 35 and introduce kiln exhaust gases from rotary furnace 40, and be formed as corresponding with the scale of complete set of cement equipment 200 jumbo Equipment.

It is disposed with boiler 63, SP row along the flowing of SP aerofluxus between air-introduced machine 62 and suspension preheater 30 Tympanites blower fan 64, cement raw material grinding machine 65 and exhaust gas treatment device 66.Boiler 63 is the SP exhaust gas recovery from more than substantially 300 DEG C Used heat, and the steam supply of high temperature is carried out, to steamturbine (not shown), the device generated electricity.Cement raw material grinding machine 65 One example is known vertical roll grinder, by multiple rollers and rotation while dry cement raw material under the supply of SP aerofluxus The rotation of platform and grind.

The cement raw material of the powder ground is supplied to suspension preheater by cement raw material Handling device (not shown) In the cyclone 31 of the higher level of 30.On the other hand, in the SP aerofluxus having passed through cement raw material grinding machine 65, left floating cement raw The micropowder of material.This SP aerofluxus bag filter 66a(dust arrester by exhaust gas treatment device 66) carry out dust process, thus receive The micropowder of collection cement raw material.The micropowder of cement raw material collected supplies with the cyclone 31 of the higher level to suspension preheater 30 Cement raw material mixing.

The exhaust gas treatment device 66 being arranged in the exhaust channel of cement raw material grinding machine 65 such as possesses two be set up in parallel Individual bag filter 66a and the switching valve (not shown) circulated to one of which with making gas-selectively.According to above-mentioned knot Structure, even if when stopping in two bag filter 66a because carrying out the maintenance of filter cloth replacing etc., it is possible to use two Another in individual bag filter 66a.It addition, dust arrester is not limited to bag filter 66a, such as, can also use electrically collection Dirt device.

In this embodiment, be connected between the cement raw material grinding machine 65 and exhaust gas treatment device 66 of exhaust line 60 have from Sludge treatment device 100 carries the downstream of the 3rd exhaustor 28 of drying machine aerofluxus.Removed by the 3rd exhaustor 28 The drying machine aerofluxus of fortune flows into exhaust gas treatment device 66 together with carrying out, by exhaust line 60, the SP aerofluxus carried.Therefore, by SP Aerofluxus and drying machine aerofluxus together carry out dust process in exhaust gas treatment device 66.In dust processes, pass through bag type filtering Device 66a removes the micropowder of cement raw material from SP aerofluxus, and removes chalk dust removing from drying machine aerofluxus.In other words, with SP exhaust phase Micropowder and the dust accompanied with drying machine aerofluxus of the cement raw material of companion are collected by bag filter 66a.With drying machine aerofluxus Combustion ash containing the dry mud produced in hot-air stove 22 and the combustion ash etc. of fuel in dust together.Containing receiving The dust of the micropowder of the cement raw material of collection and the combustion ash of dry mud is as cement material utilization.

But, by the cement of cement raw material Handling device supply to the cyclone 31 of the higher level of suspension preheater 30 Raw material is fully warmed-up by the kiln exhaust gases of high temperature while passing sequentially through cyclone 31 one by one, and supplies to calcining furnace 35.Calcining furnace 35 is arranged on the afterbody of rotary furnace 40 with extending in the vertical direction, and flows into high temperature from this rotary furnace 40 Kiln exhaust gases, and become jet flow and blow to top.

Although also, not shown, but be respectively arranged with in calcining furnace 35 the micropowder charcoal as fuel supply mouth and on The dry powder that the downstream of the dry powder carrying pipe 19 stated connects supplies mouth and the supply mouth of the air for making them burn.As combustion The air burnt, it is possible to use come from the cooler aerofluxus of the high temperature of AQC50, cooler aerofluxus is by bearing in calcining furnace 35 Pressure is attracted.As it has been described above, form the upper up-flow of kiln exhaust gases in calcining furnace 35, and the micropowder charcoal of solid shape and dry dirt Mud all burns in calcining furnace 35 well.

And, put into the cement raw material powder in calcining furnace 35 also blow in the jet flow along with kiln exhaust gases above phase Between be sufficiently heated, and be carried to the cyclone 31 of subordinate of suspension preheater 30 from the topmost of calcining furnace 35. Flowing to the cyclone 31 of upper level with cement raw material after kiln exhaust gases separates wherein, on the other hand, cement raw material is from cyclone The lower end of 31 arrives the entrance of rotary furnace 40 after falling.

Rotary furnace 40 is made up of the cylindric rotary kiln transversely grown, by this rotary kiln with from entrance to outlet slightly towards The posture of lower inclination is configured.By making rotary kiln be rotating slowly around its axle center, cement raw material is made to be carried to outlet with this Side.This outlet side is equipped with burner 41, by the high temperature that formed by the burning of micropowder charcoal, natural gas, heavy oil etc. Burning gases spray to entrance side.The cement raw material generation chemical reaction (cement sintering reaction) of burned gas blanket, one Partially sinter to becoming semi-molten state.

Cement sinter runs into cold wind and chilling in AQC50, becomes granular clinker.Then, although saving sketch map Show and illustrate, but after clinker is housed in grog storehouse, after adding the modifying ingredients such as Gypsum Fibrosum by grinding machine carry out finely divided ( Post-treatment operation).The major part of cooler aerofluxus of more than 750 DEG C it is warming up to as described above after cement sinter captures heat Supply to calcining furnace 35 as combustion air.By means of this, seek the improvement of efficiency of combustion in calcining furnace 35.

It addition, a part for cooler aerofluxus passes through the collection of bag filter etc. after being reclaimed used heat by boiler (not shown) Dirt device, and discharge from chimney.The steam of high temperature is supplied by this boiler with the boiler 63 of the used heat reclaiming SP aerofluxus identically Generate electricity to steamturbine.

The run action of sludge treatment device-

Above-mentioned sludge treatment device 100 retrains essentially without by the service condition of complete set of cement equipment 200, but base Processing plan every day in dewatered sludge is run.That is, according to a predetermined day output, determine that dewatered sludge is done to air-flow The quantity delivered of the unit interval of dry machine 1, and control the operating rate of sludge pump 5 accordingly.By sludge pump 5 at mud force pipe 6 Middle mixed with dry mud in mixing feed machine 14 by the sludge cake of force feed.The mixture of sludge cake and dry mud is broken In machine 10 broken after be dried in drying tube 11 with gas blow to above and be dried.Then, the mud of the powder being dried is (dry Dry mud) in mud cyclone 12 with drying machine aerofluxus (dry gas) centrifugation, and be contained in dry powder receive tank 13.

The dry mud taken out of from dry powder reception tank 13 puts into dry mud hopper 17.By this dry mud hopper 17 Interior dry mud measures according to the requirement of complete set of cement equipment 200 side, air-flow carrying in dry powder carrying pipe 19, and blows Enter the calcining furnace 35 of cement.The upper up-flow of kiln exhaust gases is formed, the micropowder carbon of solid shape and dry dirt in this calcining furnace 35 Mud stops about four seconds in calcining furnace 35 and burns well.Like this, having contained by dry mud can effectively be utilized The caloric value of machine thing, can cut down the quantity delivered of the micropowder carbon supplied to calcining furnace 35.Also, guarantee to be dried dirt in calcining furnace 35 The sufficient burning time of mud, therefore can suppress the generation of dioxin caused because of the imperfect combustion being dried mud.

The part of drying machine aerofluxus separated in cyclone 12 as dry gas backstreaming to pneumatic drier 1. On the other hand, because comprise the steam of dewatered sludge and the remainder of drying machine aerofluxus that volume increases at hot-air stove 22 In be heated to high temperature and deodorize.Generally, drying machine heating exhaust gas is to can deodorize completely when more than 650～700 DEG C.Therefore, exist In hot-air stove 22, measure the temperature of the hot blast of discharge, and so that the temperature of hot blast such as reaches the form of more than 650 DEG C Control the quantity delivered of the micropowder carbon supplied to burner 22a.

Burning gases and the drying machine aerofluxus of high temperature is contained from the hot blast of hot-air stove 22 discharge.This hot blast is to hand in heat In parallel operation 26 with recyclegas heat exchange and temperature is reduced to the state of about 200 DEG C and flows in the 3rd exhaustor 28, and It is fed in the exhaust gas treatment device 66 of cement raw material grinding machine 65.The drying machine aerofluxus being directed into exhaust gas treatment device 66 contains Substantial amounts of steam, but after mixing with substantial amounts of SP aerofluxus, water vapor concentration reduces, and therefore can pass through exhaust gas treatment device The bag filter 66a of 66 successfully carries out dust process.

According to above-mentioned sludge treatment device 100, in the drying machine aerofluxus produced in pneumatic drier 1, only it is emitted into ring Gas in border increases part heating and deodorize in hot-air stove 22 and processes.Therefore, it can suppress in hot-air stove 22 The consumption of fuel.Also, after the drying machine aerofluxus of the high temperature of hot-air stove 22 discharge reduces temperature heat exchanger 26, Dust process is carried out in the exhaust gas treatment device 66 of complete set of cement equipment 200.In heat exchanger 26, the drying machine row of high temperature The Btu utilization of gas is in the intensification of the drying machine aerofluxus (dry gas) being back to pneumatic drier 1.Therefore, even if by dirt Mud processing equipment 100 processes substantial amounts of mud, also will not from drying machine aerofluxus and the dry mud of sludge treatment device 100 supply The manufacturing process of cement produces bad influence, and (such as, thermal balance is destroyed, Fuel Consumption increases or Cement Quality reduces Deng impact).It is dried mud in complete set of cement equipment 200 as fuel profit also, produced in sludge treatment device 100 With, additionally, the dust of produced drying machine aerofluxus processes to enter in complete set of cement equipment 200 in sludge treatment device 100 OK, the rising of cost of cement manufacture and Treatment of Sludge can also be suppressed with this.

-the second embodiment-

Then, the sludge treatment device of the second embodiment according to the present invention is described with reference to Fig. 2.In this second enforcement shape In the sludge treatment device of state, supply being once held in the part being dried the dry powder of the mud in mud hopper 17 as fuel Give to hot-air stove 22, and make cooler aerofluxus flow in this hot-air stove 22 as combustion air, and except this Structure in addition is identical with the first embodiment, is therefore marked with identical symbol 100.Also, for identical knot in addition The devices of structure etc. are also marked with identical symbol, and the description thereof will be omitted.

More specifically, in the sludge treatment device 100 of this second embodiment, set in the midway of dry powder carrying pipe 19 It is equipped with the distributor 7 of dry mud.Taken out the dry mud carried in dry powder carrying pipe 19 by distributor 7 one Point.The dry mud taken out is supplied to the fuel supply system 23 of hot-air stove 22.By fuel supply system 23, it is dried Mud supplies to burner 22a together with micropowder carbon.So, it is dried the mud fuel utilization as burner 22a, permissible with this Cut down the quantity delivered of the micropowder carbon supplied to hot-air stove 22.Alternatively, it is also possible to be provided independently from fuel supply system 23 For being blown into the feedway of dry mud in hot-air stove 22.

Also, the aerator 24 to burner 22a conveying combustion air is carried with the AQC50 from complete set of cement equipment 200 The cooler exhaustor 8 of the cooler aerofluxus of high temperature connects.Cooler aerofluxus is more than 300 DEG C, if therefore arranged by cooler A part for gas as combustion air supply to burner 22a, then can cut down the micropowder charcoal to hot-air stove 22 supply Quantity delivered.

As it has been described above, take out a part for dry powder from dry powder carrying pipe 19 and divide to the dry powder of fuel supply system 23 supply Equipped 7 compositions of putting make dry powder supply the dry mud feedway burnt to hot-air stove 22.

-other embodiments-

It addition, the explanation of above-mentioned first embodiment and the second embodiment simply illustrates, the present invention is not limited to Its application or its purposes.Such as, in the sludge treatment device 100 of aforementioned each embodiment, dry by pneumatic drier 1 Dry dewatered sludge, but the drying machine beyond pneumatic drier can also be used.

Also, in aforementioned each embodiment, be dried mud and carry to the calcining furnace 35 of complete set of cement equipment 200, but also Can be by least one conveying in calcining furnace 35 and rotary furnace 40 of dry mud.Also, one of mud can also be made to be dried Divide and supply to suspension preheater 30.That is, as long as being dried mud effectively to utilize as fuel in complete set of cement equipment 200, then Do not limit the supply destination being dried mud.

Also, in aforementioned each embodiment, carry the 3rd exhaustor 28 of drying machine aerofluxus from sludge treatment device 100 Portion between downstream and the cement raw material grinding machine 65 in the exhaust line 60 of complete set of cement equipment 200 and exhaust gas treatment device 66 Divide and connect, but be not limited to this.Such as, the 3rd exhaustor 28 can be with the boiler 63 in exhaustor 60 and cement raw material grinding machine Part between 65 connects, it is also possible to the outlet with suspension preheater 30 is connected.That is, as long as so that drying machine aerofluxus contains The combustion ash of dry mud in exhaust gas treatment device 66, carry out the form of dust process make the downstream of the 3rd exhaustor 28 Connect with the appropriate location of relative exhaust gas treatment device 66 upstream side.

Additionally, in aforementioned each embodiment, in order to make drying machine aerofluxus deodorize, and drying machine aerofluxus is occurred at hot blast Stove 22 carries out high-temperature heating, but the deodour method of drying machine aerofluxus is not limited to this.For example, it is also possible to by utilizing cement to become The high-temperature gas heating drier aerofluxus of the calcining furnace 35 of complete equipment 200, rotary furnace 40, AQC50 etc., makes drying machine aerofluxus with this Deodorize.Or ceramic catalyst and chemosorbent etc. can also be utilized to make drying machine aerofluxus deodorize.Also, preferably drying machine Aerofluxus carries out deodorize in gas extraction system, but can also be that drying machine aerofluxus is delivered in the case of not deodorize according to situation The exhaust gas treatment device 66 of complete set of cement equipment 200.In this case, the powder of the dry mud together existed with drying machine aerofluxus Dirt etc. are reclaimed by exhaust gas treatment device 66.

Also, in aforementioned each embodiment, make to come from the hot blast (burning gases of high temperature and being dried of hot-air stove 22 Machine aerofluxus) in heat exchanger 26, carry out heat exchange with the drying machine aerofluxus being recycled to pneumatic drier 1, but the cooling of hot blast The heating means of method and recyclegas are not limited to this.For example, it is also possible to hot blast is mixed with recyclegas, thus heat cycles Gas.But, in this case, it has to the temperature treating drying machine aerofluxus that dust processes is reduced to bag filter 66a Heat resisting temperature, the most such as can by boiler reclaim drying machine aerofluxus heat.

Also, in aforementioned second embodiment, using dry mud as fuel, using the cooler aerofluxus of AQC50 as combustion Burning air is respectively fed in the burner 22a of hot-air stove 22, but can also only be dried mud and cooler aerofluxus In any one supply in burner 22a.Also, can also make to replace cooler to arrange by the air of cooler heating exhaust gas Gas is as in combustion air supply to burner 22a.

-other forms of complete set of cement equipment-

Additionally, the structure of complete set of cement equipment 200 is also not necessarily limited to aforementioned each embodiment, at mud related to the present invention Reason equipment can apply in the various complete set of cement equipment as shown in such as Fig. 3～Fig. 6 (variation 1～4).It addition, with Although the complete set of cement equipment of lower illustration exists difference with aforementioned each embodiment respectively, but overall structure is identical, therefore It is marked with identical symbol 200.Also, be marked with under identical circumstances for constituting device and the component etc. of complete set of cement equipment 200 Identical symbol, and the description thereof will be omitted.

In the complete set of cement equipment 200(variation 1 shown in Fig. 3) in, in order to prevent in suspension preheater 30 and calcining In stove 35 grade, the chlorine component in the period gas of circulation and alkali composition etc. are concentrated, and are provided with bypass line 67.This bypass pipe The bottom on road 67 is connected and a part for gas bleeding with the bottom etc. of calcining furnace 35, and this is bled and pass through cooler It is delivered to cyclone 67b after 67a cooling and dust is carried out classification.By aerator 67c transporting cold wind in cooler 67a, And below the fusing point of chlorine compound etc. it is chilled to by bleeding, chlorine component or alkali composition in bleeding with this are formed as solid (powder Dirt) separate.

Then, the dust in bleeding in cyclone 67b is classified as coarse powder and micropowder, is essentially free of chlorine component and alkali The coarse powder of composition etc. falls from the lower end of cyclone 67b, and one part is back to by the reflux pipe 67d shown in omission Calcining furnace 35.On the other hand, the micropowder that the concentration of chlorine component and alkali composition is higher is along with bleeding from row from cyclone 67b sucking-off Trachea 67e flows into dust arrester 67f, thus is trapped by dust arrester 67f.Pass through bleeding of dust arrester 67f to return through aerator 67g It flow to calcining furnace, or be delivered in other exhaust gas treatment device.

Secondly, in the complete set of cement equipment 200(variation 2 shown in Fig. 4) in, suspension preheater 30 is divided into two and is System, and each system such as possesses the cyclone 31 of Pyatyi.It is blown into kiln exhaust gases from subordinate in the system in the left side of figure, and In addition to being not provided with calcining furnace 35, have and aforesaid first embodiment, the suspension preheater 30 of the second embodiment Identical structure.

On the other hand, the system on the right side of figure is provided with calcining furnace 35, but here flows into and come from AQC50's The cooler aerofluxus of high temperature rather than kiln exhaust gases.In cooler aerofluxus and aforementioned first embodiment, the second embodiment Kiln exhaust gases flows into the lower end of calcining furnace 35 in the same manner, and blows to top (representing in figure) with single dotted broken line.This cooler aerofluxus With the dry powder blend of the mud being directed in calcining furnace 35, blow afloat while making it burn under cement raw material, and arrival The cyclone 31 of level.Then, rise one by one in cyclone 31 and flow out to exhaust line from the cyclone 31 of higher level 60。

Also, in the complete set of cement equipment 200(variation 3 shown in Fig. 5) in, the structure of calcining furnace and the first embodiment, Second embodiment is different.That is, calcining furnace 70 has the mixing chamber 71 of the afterbody being arranged at rotary furnace 40 and connects with its underpart Rotation calcining compartment 72, this rotation calcining compartment 72 is equipped burner 73, ejection is by coal, natural gas, heavy oil etc. The burning gases of the produced high temperature of burning.As it can be seen, in rotating calcining compartment 72, come from the cooling of the high temperature of AQC50 Device aerofluxus (air) is imported into as eddy flow, and supplies the cement raw material of preheating from the cyclone 31 of the upper level of subordinate.

This cement raw material runs into while coming from the burning gases of burner 73 and calcining and moves to mixing chamber 71 Dynamic, it is here to blow to top by the jet flow of the kiln exhaust gases below coming from.That is, in mixing chamber 71, containing cement raw The burning gases stream of material collaborates with kiln exhaust gases stream, and both rise while mixing.The phase blown afloat is flowed up on along with this Between cement raw material fully calcined, and be carried to the cyclone of subordinate by pipe from the outlet of the topmost of mixing chamber 71 31.It addition, be such as directed into entrance the going out to mixing chamber 71 from rotary furnace 40 from the dry powder that sludge treatment device 100 carrying is next Between Kou, or rotate between calcining compartment 72 and mixing chamber 71.

Additionally, in the complete set of cement equipment 200(variation 4 shown in Fig. 6) in be not provided with calcining furnace, but and rotary furnace The standpipe 75 that the entrance of 40 connects extends upward, and its upper end connects with the cyclone 31 of the subordinate of suspension preheater 30 Connect.In this standpipe 75, it is supplied respectively to the dry powder of cement raw material and mud, and blows to top by the jet flow of kiln exhaust gases.Dry Oxygen contained in powder and kiln exhaust gases carries out reacting and burns in standpipe 75 and suspension preheater 30.

In addition, in including the complete set of cement equipment 200 of embodiment of the equipment shown in earlier figures 3～Fig. 6, water The sintering furnace of mud is not limited to rotary furnace 40, such as, can also be fluid bed furnace.

Industrial applicability:

According to the present invention it is possible in the case of cement manufacturing process is not as far as possible produced bad influence, with existing water Processing substantial amounts of dewatered sludge in the sludge treatment device that clay manufacturing apparatus is disposed adjacent, therefore industrial applicability is high.

Symbol description:

100 sludge treatment devices；

1 pneumatic drier (drying machine)；

3 are dried mud Handling device；

4 drying machine aerofluxus Handling devices；

7 dry powder dispersion devices (are dried mud feedway)；

8 cooler exhaustors；

20 downtake pipes (the carrying path of drying machine aerofluxus)；

22 hot-air stoves (deodorization device)；

23 fuel supply systems；

24 aerators (combustion air feedway)；

25 second exhaust pipes (the carrying path of drying machine aerofluxus)；

26 heat exchangers；

27 circulation pipes (current return circuit)；

200 complete set of cement equipment (the manufacture equipment of cement)；

30 suspension preheaters (preheater)；

35 calcining furnaces；

40 rotary furnaces (calcining furnace)；

50 air hardening coolers (AQC)；

65 cement raw material grinding machines；

The exhaust gas treatment device of 66 cement raw material grinding machines；

66a bag filter (dust arrester).

Claims (7)

1. a sludge treatment device, is and possesses preheater, calcining furnace, sintering furnace and the exhaust line from described preheater The sludge treatment device that is disposed adjacent of cement making equipment, described exhaust line has cement raw material grinding machine and described cement raw material The dust arrester arranged on the exhaust channel of grinding machine, described sludge treatment device possesses:

Make the drying machine that dewatered sludge is dried；

Be carried to by the mud being dried by described drying machine at least one in described calcining furnace and described sintering furnace is dry Dry mud Handling device, is referred to as being dried mud by the mud being dried by described drying machine below；With

Having the drying machine aerofluxus Handling device of carrying path, the drying machine aerofluxus produced in described drying machine is via described carrying Between described cement raw material grinding machine and described dust arrester that path is carried on described exhaust line,

Described drying machine aerofluxus Handling device has to be arranged in described carrying path described drying machine aerofluxus is carried out deodorize Deodorization device；

Described deodorization device is to make fuel combustion with this hot blast produced in stove by described dry by means of combustion air Dry machine heating exhaust gas is to hot-air stove more than set point of temperature.

Sludge treatment device the most according to claim 1, it is characterised in that

Described drying machine is formed with being heated by the described drying machine aerofluxus after the heating that described deodorization device is discharged The structure of dewatered sludge described in dry gas drying.

Sludge treatment device the most according to claim 1, it is characterised in that possess:

From described carrying path by bifurcated between described drying machine to described deodorization device, and by the one of described drying machine aerofluxus Part is delivered to the current return circuit of described drying machine as dry gas；With

Make the described drying machine aerofluxus after the heating that described deodorization device is discharged and flow into the described dry of described current return circuit Machine aerofluxus carries out the heat exchanger of heat exchange.

Sludge treatment device the most according to claim 1, it is characterised in that

Possess part or all using the dry mud being dried by described drying machine to fill as fuel supply to described deodorize The fuel supply system put.

Sludge treatment device the most according to claim 1, it is characterised in that

Described cement making equipment possesses the cooler that the cement sinter sintered in described sintering furnace is carried out cool down；

Possess the aerofluxus of described cooler or supplied extremely as combustion air by the air of the heating exhaust gas of described cooler The combustion air feedway of described deodorization device.

6. a method for sludge treatment, is to possess preheater, calcining furnace, sintering furnace and the exhaust line from described preheater Cement making equipment and sludge treatment device in the method for Treatment of Sludge that carries out, described exhaust line has cement raw material mill The dust arrester arranged on the exhaust channel of machine and described cement raw material grinding machine, described method for sludge treatment includes:

It is dried mud by the drying machine of described sludge treatment device；

Dry mud (being hereinafter referred to as dried mud) is carried to the described calcining furnace of described cement making equipment and described burning In at least one in freezing of a furnace；With

The drying machine aerofluxus produced in described drying machine is heated to more than set point of temperature thus deodorize by hot-air stove；

By the drying machine aerofluxus of deodorize described cement raw material grinding machine on the described exhaust line of described cement making equipment and institute State and carry between dust arrester, from described drying machine aerofluxus, removed the dust being dried mud by this dust arrester.

Method the most according to claim 6, it is characterised in that also include:

The part making described drying machine aerofluxus refluxes to described drying machine in the case of not carrying out deodorize；With

The described drying machine aerofluxus of heated deodorize is heated, as thermal source, the described drying machine aerofluxus refluxed to described drying machine.