CN102372414A - Method for processing sludge by carbonization and equipment thereof - Google Patents

Method for processing sludge by carbonization and equipment thereof Download PDF

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Publication number
CN102372414A
CN102372414A CN2010102619709A CN201010261970A CN102372414A CN 102372414 A CN102372414 A CN 102372414A CN 2010102619709 A CN2010102619709 A CN 2010102619709A CN 201010261970 A CN201010261970 A CN 201010261970A CN 102372414 A CN102372414 A CN 102372414A
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China
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drying
equipment
charing
gas
temperature
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CN2010102619709A
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Chinese (zh)
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李�浩
朱准平
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青岛博迈斯环保技术有限公司
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Priority to CN2010102619709A priority Critical patent/CN102372414A/en
Publication of CN102372414A publication Critical patent/CN102372414A/en

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Abstract

The invention discloses a method for processing sludge by carbonization and equipment thereof. The method for processing sludge by carbonization comprises the following steps of: drying step; carbonization step; screening step; backmixing step; and tail gas processing step. The drying step further comprises steps of: collecting a material, allowing the material to enter into a drying machine, and drying until the water content reaches 10-40%. The carbonization step further comprises steps of: allowing the material to enter into a carbonization furnace after the drying process, allowing a temperature device in the carbonization furnace to reach a temperature required for processing the material, and cutting off power for heating, wherein electric energy is used as the starting energy for the carbonization furnace. The method and the equipment provided by the invention can be used to solve the problem that resource utilization can not be maximized and there exists second pollution during the treatment process in the prior art, and also can be used to raise the quantitative reduction rate of the processed material, stabilize the final product, realize resource utilization and make the disposal process harmless.

Description

A kind of charing sludge treatment method and equipment thereof

Technical field

The present invention relates to charing disposal of resources method and equipment technical field thereof, particularly a kind of method and equipment thereof that is used for charing processing organic sludge and feces of livestock and poultry.

Background technology

At present, in recent years to the attention of sewage treatment industry, built a large amount of sewage works along with domestic; Brought the handling problems of mud, the known method of coming out mainly comprises mummification, burning (anhydration and incineration, multifuel combustion) and compost, wherein mummification disposal options thereupon; Being the intermediate treatment process, is not the ultimate disposal means, can't realize stabilization; Can not reach maximum minimizing, cost of disposal is high; The burning mode can produce poisonous gases such as a large amount of oxynitride, oxysulfide owing to be the violent chemical reaction under aerobic state, produces the highly toxic substance dioxin simultaneously; Also can produce a large amount of greenhouse gases---carbonic acid gas; And, need tail gas, the flying dust treatment cost of great number with flying dust, again owing to itself contain a large amount of resource (for example nitrogen, phosphorus, potassium) in the mud; Though the burning mode has realized minimizing, stabilization treatment, the waste that resource is a large amount of; Composting mode then because can't minimizing, reason such as long processing period, secondary pollution be serious, and the composting production market recognition is low, can only circumscribedly promote in some areas.

Summary of the invention

Technical problem to be solved by this invention is, is provided for equipment and method that organic sludge and feces of livestock and poultry are handled in charing.Overcome and to form utilization of resources maximization, the problem that the secondary environmental pollution that disposal process causes is serious in the prior art.Charing disposal of resources method of the present invention can not only increase substantially the minimizing rate of object being treated, and final product possesses stabilization, and realizes recycling, disposes flow process simultaneously and has realized innoxious.

For solving the problems of the technologies described above, the present invention provides a kind of equipment that organic sludge and feces of livestock and poultry are handled in charing that is used for, and key equipment is a charring furnace; Said charring furnace further comprises: top 1, inwall 2, furnace chamber, hopper 3, block-proof type rotary valve 4, preheating and auxiliary carbonizing tube 5, main carbonizing tube 6, high-temperature rotary valve 7, cooling pipe 8, material outlet 9 and gas line 17.

Said top 1 is detachable, is used to make things convenient for maintenance, the replacing of internal part;

Said inwall 2 is a lagging material;

The top of said inwall 2 and said top 1 combine, and are the open type structure, and internal surface covers, reinforces with titanium plate, utilizes the characteristics of titanium plate high calorie reflectivity, with reflect heat to said device interior, to reach the purpose of save energy;

The bottom of said inwall 2 and both sides further are provided with wire spiral respectively, when said equipment uses, at first through wire spiral said furnace chamber are heated to the carbonization reaction temperature, add material then.

Said hopper 3 is used in equipment, throwing in material;

Said hopper 3 inside further are provided with whipping appts, are used to prevent that mud from piling up, obstruction;

Said equipment in use, material gets into preheatings and auxiliary carbonizing tube 5 through said block-proof type rotary valve 4;

Said block-proof type rotary valve 4 is used to stop upper air to get in preheating and the auxiliary carbonizing tube 5;

Said preheating and auxiliary carbonizing tube 5 are two one group, and said preheating and auxiliary carbonizing tube 5 inside further are provided with spiral promoting shaft, and the axle head of said spiral promoting shaft rotates with driven by motor, is used to promote material and advances.

Said equipment further is provided with drop pipe 10, and said drop pipe 10 is with said preheating and assist carbonizing tube 5 and main carbonizing tube 6 to link to each other;

Said equipment when material is advanced said drop pipe 10 in said preheating and auxiliary carbonizing tube 5 after, relies on gravity to fall to said main carbonizing tube 6 automatically in use;

Said main carbonizing tube 6 is one, and said main carbonizing tube 6 inside further are provided with spiral promoting shaft, and the axle head of said spiral promoting shaft is used to promote material and oppositely advances with driven by motor;

Said equipment when material is accomplished carbonization process in said main carbonizing tube 6 after, is advanced said high-temperature rotary valve 7 in use;

Said high-temperature rotary valve 7 inside further are provided with water cooling plant, and said water cooling plant is used to prevent said high-temperature rotary valve 7 overheated back parkings;

Said high-temperature rotary valve 7 is used for preventing that a large amount of gas permeation that the carbonization reaction process produces from getting into said cooling pipe 8.

Said cooling is managed 8 outsides and further is provided with water jacket;

Said cooling is characterized in that according to the said equipment that is used for charing processing mud and feces of livestock and poultry of claim 1, manages 8 inside and advance with screw shaft;

Said cooling pipe 8 is used for the material processing of lowering the temperature, make it be lower than burning-point after, discharge through said material outlet 9.

Said equipment further is provided with gas port 11 and tracheae 12;

Said gas port 11 links to each other with said gas line 17 with said preheating and auxiliary carbonizing tube 5;

Said tracheae 12 links to each other with said gas line 17 with said main carbonizing tube 6;

Said equipment in use, material carries out charing in said preheating and auxiliary carbonizing tube 5 and main carbonizing tube 6, produce solid, gas two phase materials, solid matter is continued to be advanced, and progressively discharges from exporting 9; Gas in said preheating and the auxiliary carbonizing tube 5 gets into gas line 17 through said gas port 11, and the gas in the said main carbonizing tube 6 gets into gas line 17 through tracheae 12.

Said equipment further is provided with booster fan 13 and wind box 14;

Said booster fan 13 is used for the mode with air blast, and air is blown into said wind box 14;

Two blast mains are established on the top of said wind box 14; Wherein, second blast main 16 is used for freezing air is delivered to the venting port 18 of gas line 17, to play the effect of cooling and acceleration air flowing; First blast main 15 is used for air is delivered to gas line 17 inside, to play combustion-supporting effect;

The tail end of said gas line 17, preheating and auxiliary carbonizing tube 5, main carbonizing tube 6 all adopts free-standing; With pulley 19 every pipe fitting being carried out horizontal direction fixes; It can only be extended in the horizontal direction, be used for avoiding said pipe fitting to bend at the heat-processed expanded by heating;

Said first blast main 15 and said second blast main 16 are used for the flow of control air further being provided with valve 20 with wind box 14 position contacting.

For solving the problems of the technologies described above, the present invention also provides a kind of method that mud and feces of livestock and poultry are handled in charing that is used for, and may further comprise the steps:

Drying step;

The charing step;

The screening step;

The back-mixing step;

The vent gas treatment step.

Said drying step further comprises: material gets into drying machine through collecting, through drying treatment to water ratio 10%~40%;

Said charing step further comprises: material gets into charring furnace through after the drying treatment; Said charring furnace adopts electric energy for starting the energy, when temperature device in the charring furnace reach material handle temperature required after, under the situation that material constantly drops into, the motor that drives mass transport is still in running, the power dump of heating usefulness; The inflammable gas that material produces in the charing disposal process directly burns in charring furnace inside, and the heat energy of generation is used for the required heat of carbonization reaction; Tail gas after the burning that produces gets into thermoconverter through piping, through high-temperature steam or thermal oil heat is transferred to drying machine through piping, is used for practicing thrift the heat exhaustion of drying process.

Said screening step further comprises: after the material process charing step process, become granular and/or Powdered black solid particle, after the screening plant screening, store up, pack, transport after the screen overflow cooling;

Said back-mixing step further comprises; All the other screen underflows that account for product total amount 20%~60% get into drying machine through the pipeline back-mixing, are used to play the effect of nucleation granulation and drying aid, reduce the energy expenditure in the drying process;

Said vent gas treatment step further comprises: through the tail gas of the shock heating amount recovery of said carbonization step; The a large amount of tail gas that produce with drying step get into the spray water cleaning device through pipeline; Fully behind cooling and the removal suspended solid, discharge after the process exhaust gas processing device reaches harmless treatment again.

Beneficial technical effects of the present invention is:

One, relative state of the art

1, realized minimizing

The present invention has the reduction rate that is equal to the burning mode, far above other disposal options such as mummification, compost.

2, realized innoxious

The present invention has realized innoxious in the disposal process; Because disposal process is carried out in oxygen-free environment; Therefore toxic gases such as nitrogenfree oxide, oxysulfide produce, and also do not have highly toxic substance---and the generation of dioxin, the CER of the carbonic acid gas mode of burning relatively can reduce discharging about 150-200kg/ ton mud (is example with the domestic sludge); Because entire reaction course is under the normal pressure shakedown, to carry out, does not therefore have flue dust yet and produce simultaneously.

3, realized stabilization

The final product of the present invention is a carbon granule, is the material of black, tasteless, the similar charcoal of vesicular, is not afraid of and makes moist, is convenient to transportation, can in a single day not drenched with rain as disposal options such as mummification, compost and will cause the serious environmental disaster.

4, realized resource utilization

That the final product carbon granule of charing disposal options has is many empty, be rich in nutritive elements such as nitrogen, phosphorus, potassium, mineral substance, therefore serves many purposes, and possesses higher added value, and this is that disposal options such as burning is incomparable.For example:

I, additional nutrient element are made into carbon-base slow release fertilizer;

II, as soil improvement agent, utilize its porousness to improve ecological environment of soil;

III, directly mix use with other fertilizer, prolong fertilizer efficiency, improve the utilization ratio of various nutritive elements, prevent to run off, cause the pollution of rivers and lakes as sustained release dosage;

IV, as dewatering agent, be applied directly to the dewatering process flow of sludge of sewage treatment plant, improve dewatering rate.

V, as Snow Agent, directly shed snowy road surface, utilize the characteristics of its black absorption heat, porous water-absorbing, can be used as the substitute of existing salt Snow Agent, and can prevent that polluted water from polluting.

Two, the similar technology of other technical field relatively

1, the present device charring furnace adopts integral machine, and floor space is less than equipment of the same type;

2, the present invention adopts the gaseous combustion of raw material charing and its generation to place the design in the same reaction kettle, makes full use of heat energy, reduces energy consumption;

3, key equipment SF of the present invention is high, and the employing electric energy is the energy, and heat-processed is stable, and the uneven situation of being heated can not appear in carbonization reaction process stabilization and equilibrium;

4, key equipment operational process of the present invention is stable, and the noise of generation, vibrations and foul smell amount are very little.

Description of drawings

Fig. 1 is the right view of the said charring furnace of the embodiment of the invention;

Fig. 2 is the front view of the said charring furnace of the embodiment of the invention;

Fig. 3 is the left view of the said charring furnace of the embodiment of the invention.

Embodiment

Patent of the present invention relates to a kind of charing disposal of resources method and key equipment to organic sludge (mainly including but are not limited to domestic sludge, paper mill sludge) and feces of livestock and poultry; Present method and equipment are realized minimizing, innoxious, stabilization, disposal of resources fully with organic sludge, feces of livestock and poultry, and final product possesses bigger added value.

Below will combine accompanying drawing and embodiment to specify embodiment of the present invention, how the utilisation technology means solve technical problem to the present invention whereby, and the implementation procedure of reaching technique effect can make much of and implement according to this.

In one embodiment of the invention, like Fig. 1,2, shown in 3, be respectively right view, front view and the left view of the said charring furnace of present embodiment.

Wherein the top 1 of charring furnace is detachable, with maintenance, the replacing of conveniently inner part.

Charring furnace inwall 2 is a lagging material; The material of selecting for use is that ceramic lagging material, refractory brick comprise pure aluminium silicate, corundum carborundum etc., insulating cotton or compound lagging material; Inwall top and charring furnace top 1 combine; Be the open type structure, internal layer covers, reinforces with titanium plate, and can reflect heat to device is inner.The bottom of charring furnace inwall and both sides are distributed with wire spiral and adopt the Shockproof type nichrome wire; When equipment operation; Earlier whole charring furnace furnace chamber is heated to the required temperature of reaction of charing, is generally 700~800 ℃, in particular cases through wire spiral; The scope that can be provided with is 500~1000 ℃, begins to add material then.

Material at first gets into hopper 3, and this hopper inside is provided with whipping appts, piles up, stops up to prevent mud.

Material gets into preheating and auxiliary carbonizing tube 5 through block-proof type rotary valve 4, and preheating and auxiliary carbonizing tube 5 are two one group, are provided with spiral promoting shaft in the pipe, and axle head rotates with driven by motor, promotes material and advances.The effect of block-proof type rotary valve 4 is to stop upper air to get in preheating and the auxiliary carbonizing tube 5.

When material is advanced drop pipe 10 in pipe, rely on gravity to fall to main carbonizing tube 6 automatically, main carbonizing tube 6 is one, and inside is provided with spiral promoting shaft equally, and axle head promotes material and oppositely advances with driven by motor.

Material is accomplished carbonization process in main carbonizing tube 6 after; Be advanced high-temperature rotary valve 7; This rotary valve inside is provided with water cooling plant, stops to prevent the overheated back of rotary valve, and the effect of this rotary valve is to prevent that a large amount of gas permeation that produce in the carbonization reaction process from getting into cooling pipe 8.

Cooling pipe 8 outsides are provided with water jacket, innerly advance with screw shaft, and the cooling pipe is to material processings of lowering the temperature, and promptly are lower than 250 ℃ after making it be lower than burning-point, through material outlet 9 discharges.

Material carries out charing in preheating and auxiliary carbonizing tube 5 and main carbonizing tube 6, produce solid, gas two phase materials, and solid matter is continued to be advanced, and progressively discharges from exporting 9; Gas in preheating and the auxiliary carbonizing tube 5 gets into gas line 17 through gas port 11, and the gas in the main carbonizing tube 6 gets into gas line 17 through tracheae 12.

Booster fan 13 is blown into wind box 14 with the mode of air blast with air, and two blast mains are established at this wind box top, and blast main 16 is delivered to the venting port 18 of gas line 17 with freezing air, to play the effect of cooling.

Blast main 15 is delivered to gas line 17 inside with air, plays combustion-supporting effect.

The tail end of gas line 17, preheating and auxiliary carbonizing tube 5, main carbonizing tube 6 all adopts free-standing; With pulley 19 every pipe being carried out horizontal direction fixes; Make it can only extend carbide furnace various pipe fittings meeting expanded by heating in the stove in heat-processed in the horizontal direction, avoid pipe fitting to bend

Blast main 15 and blast main 16 are being provided with valve 20 with the wind box position contacting, with the flow of control air.

Shown in accompanying drawing 1-3, in another embodiment of the present invention, be used for the equipment that mud and feces of livestock and poultry are handled in charing, comprise drying machine and charring furnace; Said charring furnace further comprises: top 1, inwall 2, furnace chamber, hopper 3, block-proof type rotary valve 4, preheating and auxiliary carbonizing tube 5, main carbonizing tube 6, high-temperature rotary valve 7, cooling pipe 8, material outlet 9 and gas line 17.

Said top 1 is detachable, is used to make things convenient for maintenance, the replacing of internal part;

Said inwall 2 is a lagging material;

The top of said inwall 2 and said top 1 combine, and are the open type structure, cover, reinforce with titanium plate, are used for reflect heat to said device interior;

The bottom of said inwall 2 and both sides further are provided with wire spiral respectively, when said equipment uses, at first through wire spiral said furnace chamber are heated to the carbonization reaction temperature, add material then.

Said hopper 3 is used in equipment, throwing in material;

Said hopper 3 inside further are provided with whipping appts, are used to prevent that mud from piling up, obstruction;

Said equipment in use, material gets into preheatings and auxiliary carbonizing tube 5 through said block-proof type rotary valve 4;

Said block-proof type rotary valve 4 is used to stop upper air to get in preheating and the auxiliary carbonizing tube 5;

Said preheating and auxiliary carbonizing tube 5 are two one group, and said preheating and auxiliary carbonizing tube 5 inside further are provided with spiral promoting shaft, and the axle head of said spiral promoting shaft rotates with driven by motor, is used to promote material and advances.

Said equipment further is provided with drop pipe 10, and said drop pipe 10 is with said preheating and assist carbonizing tube 5 and main carbonizing tube 6 to link to each other;

Said equipment when material is advanced said drop pipe 10 in said preheating and auxiliary carbonizing tube 5 after, relies on gravity to fall to said main carbonizing tube 6 automatically in use;

Said main carbonizing tube 6 is one, and said main carbonizing tube 6 inside further are provided with spiral promoting shaft, and the axle head of said spiral promoting shaft is used to promote material and oppositely advances with driven by motor;

Said equipment when material is accomplished carbonization process in said main carbonizing tube 6 after, is advanced said high-temperature rotary valve 7 in use;

Said high-temperature rotary valve 7 inside further are provided with water cooling plant, and said water cooling plant is used to prevent said high-temperature rotary valve 7 overheated back parkings;

Said high-temperature rotary valve 7 is used for preventing that a large amount of gas permeation that the carbonization reaction process produces from getting into said cooling pipe 8.

Said cooling is managed 8 outsides and further is provided with water jacket;

Said cooling is characterized in that according to the said equipment that is used for charing processing mud and feces of livestock and poultry of claim 1, manages 8 inside and advance with screw shaft;

Said cooling pipe 8 is used for the material processing of lowering the temperature, make it be lower than burning-point after, discharge through said material outlet 9.

Said equipment further is provided with gas port 11 and tracheae 12;

Said gas port 11 links to each other with said gas line 17 with said preheating and auxiliary carbonizing tube 5;

Said tracheae 12 links to each other with said gas line 17 with said main carbonizing tube 6;

Said equipment in use, material carries out charing in said preheating and auxiliary carbonizing tube 5 and main carbonizing tube 6, produce solid, gas two phase materials, solid matter is continued to be advanced, and progressively discharges from exporting 9; Gas in said preheating and the auxiliary carbonizing tube 5 gets into gas line 17 through said gas port 11, and the gas in the said main carbonizing tube 6 gets into gas line 17 through tracheae 12.

Said equipment further is provided with booster fan 13 and wind box 14;

Said booster fan 13 is used for the mode with air blast, and air is blown into said wind box 14;

Two blast mains are established on the top of said wind box 14; Wherein, second blast main 16 is used for freezing air is delivered to the venting port 18 of gas line 17, to play the effect of cooling; First blast main 15 is used for air is delivered to gas line 17 inside, to play combustion-supporting effect;

The tail end of said gas line 17, preheating and auxiliary carbonizing tube 5, main carbonizing tube 6 all adopts free-standing; With pulley 19 every pipe fitting being carried out horizontal direction fixes; It can only be extended in the horizontal direction, be used for avoiding said pipe fitting to bend at the heat-processed expanded by heating;

Said first blast main 15 and said second blast main 16 are used for the flow of control air further being provided with valve 20 with wind box 14 position contacting.

In an embodiment more of the present invention, a kind of method that mud and feces of livestock and poultry are handled in charing that is used for is provided.May further comprise the steps:

1, domestic sludge, paper mill sludge, fowl and animal excrement class organic solid through collecting, get into drying machine through pipeline closed spiral conveying tube hereinafter to be referred as material, handle the back water ratio through drying machine and reach 10%~40%; Drying machine is present more general equipment, like disc type, oar blade type, all can.

In the drying treatment section, the final processing of part product---the back-mixing of carbon granule is arranged, not only can play the effect of granulation, simultaneously because its porous characteristic can play the effect that improves drying efficiency; Producing the high-temperature tail gas that a large amount of pyrolysis gas burnings back produces in the charing section, through after the energy recovery of thermoconverter, is that approach is transferred to dryer section with steam or thermal oil, thus save energy.

Material is through after the drying treatment, and its final water ratio is controlled, according to the difference of material organic content; Organic content is high more to be generally 30~70%, and final water ratio is high more, and organic content is low more; Final water ratio needs corresponding turning down, to reach the treatment condition of charing processing section.

2, material through pipeline closed spiral conveying tube, gets into hopper through after the drying treatment, deadens air through rotary valve, and material gets into charring furnace through piping closed spiral conveying tube, and charring furnace is a key equipment of the present invention;

Material is sent to charring furnace with airtight spiral conveying tube after handling through dryer section, plays the minimizing material heat and scatters and disappears, and secluding air is avoided the effect of air admission charring furnace.

Charring furnace adopts electric energy for starting the energy, and this device reaches the temperature required back of material processing fowl and animal excrement and is generally 500~800 ℃, and domestic sludge and paper mill sludge are generally 600~850 ℃.Under the situation that material constantly drops into; The motor that the operation of can cutting off the power supply has only part to drive mass transport is still turning round, and the power supply of heating usefulness can cut off, and this is because material produces great number of flammable gas in the charing disposal process of this device; Comprise gases such as methane and other alkane, alkene, hydro carbons, hydrogen, carbon monoxide

3, after material is handled through charring furnace; Become granular and Powdered black solid particle; After the screening plant screening, 20%~60% product screen underflow gets into drying machine through pipeline closed spiral conveying tube, stores up, packs, transports after all the other products cool off;

4, the solid particulate matter of back-mixing to drying machine can play the effect of nucleation granulation and drying aid, reduces the energy expenditure in the drying process;

5, material produces great number of flammable gas in the charing disposal process; This gas directly burns in charring furnace inside; The heat energy that produces is used for the heat of the required part of carbonization reaction; Tail gas after the burning that produces gets into thermoconverter through piping, through high-temperature steam or thermal oil heat is transferred to drying machine through piping, thereby practices thrift the heat exhaustion in the drying process;

6, through the tail gas of heat recuperation, get into the spray water cleaning device through pipeline, produce tail gas in the drying machine and get into the spray water cleaning device through pipeline, after fully lowering the temperature and removing suspended solid, discharge after the process exhaust gas processing device reaches harmless treatment again;

In another embodiment of the present invention, a kind of method that organic sludge and feces of livestock and poultry are handled in charing that is used for is provided also.May further comprise the steps:

Drying step;

The charing step;

The screening step;

The back-mixing step;

The vent gas treatment step.

Said drying step further comprises: material gets into drying machine through collecting, through drying treatment to water ratio 10%~40%;

Said charing step further comprises: material gets into charring furnace through after the drying treatment; Said charring furnace adopts electric energy for starting the energy, when temperature device in the charring furnace reach material handle temperature required after, under the situation that material constantly drops into, the motor that drives mass transport is still in running, the power dump of heating usefulness; The inflammable gas that material produces in the charing disposal process directly burns in charring furnace inside, and the heat energy of generation is used for the required heat of carbonization reaction; Tail gas after the burning that produces gets into thermoconverter through piping, through high-temperature steam or thermal oil heat is transferred to drying machine through piping, is used for practicing thrift the heat exhaustion of drying process.

Said screening step further comprises: material becomes granular and/or Powdered black solid particle through after the charing step process, after the screening plant screening, stores up, packs, transports after screen overflow and 40%~80% the screen underflow cooling;

Said back-mixing step further comprises; All the other screen underflows of 20%~60% get into drying machine through pipeline, are used to play the effect of nucleation granulation and drying aid, reduce the energy expenditure in the drying process;

Said vent gas treatment step further comprises: the tail gas through the shock heating amount of said carbonization step reclaims, get into the spray water cleaning device through pipeline, and after fully lowering the temperature and removing suspended solid, pass through again and discharge after exhaust gas processing device reaches harmless treatment.

Among the embodiment more of the present invention; Adopt the method for use of following charring furnace: 50 kilograms of moral sludge of sewage treatment plant (water ratio 80%) are hunted through the light drying in Guangzhou; Shine to water ratio about 30%, get about 14 kilograms of sludge-drying, be crushed to the grain pattern of diameter 1~20mm; With device start, after 150 minutes, temperature reaches 750 ℃ of the working temperatures of setting; The mode that sludge-drying feeds intake with manual work adds to the charring furnace feeding mouth, and after 20 minutes, material is accomplished the charing treatment scheme; Get into the cooling colling stages, after 10 minutes, discharge out of the furnace; Become black cell texture particle, output is 6.5 kilograms.

Its charing method

The first step: get Guangzhou and hunt 10 tons of moral sludge of sewage treatment plant (water ratio 80%);

Second step: start charring furnace, and temperature is set to 750 ℃ of working temperatures, reach temperature required after 150 minutes;

The 3rd step: start paddle-dryer, this drying machine adopts thermal oil to be the heating thermal source, and Heating temperature is 180 ℃;

The 4th step: adopt the spiral tube cast feeder, mud is delivered to blade dryer continuously, moisture percentage in sewage sludge reduces to 30% after 10 minutes, enters spiral conveying tube from discharge port, and sludge-drying output is about 2.85 tons;

The 5th step: dried mud is delivered to the charring furnace feeding mouth by spiral conveying tube with airtight mode continuously, and (feeding mouth is airtight case structure; Prevent that air from entering); Mud is handled through about 20 minutes charing, after 10 minutes the cooling processing under cooling, discharges out of the furnace;

The 6th step: the charring furnace exit connects sieve apparatus, and sieve aperture is 2.5mm, and screen underflow is about 30%, and the spiral conveying tube of being open to the custom is back to drying machine, plays the effect of drying aid and granulation, and screen overflow is through behind the spray cooling, and packing is transported outward;

The 7th step: sludge-drying produces a large amount of pyrolysis gas in carbonization process; In charring furnace,, discharge heat energy, make the interior temperature of stove surpass 750 ℃ through after the burning; The heater of charring furnace stops heating; Only energising heating makes that temperature is not less than 750 ℃ in the stove when temperature is lower than 750 ℃, and in the entire treatment process, keeping temperature in the stove is between 750~820 ℃;

The 8th step: pyrolysis gas heats the heat conduction fuel tank through the tail gas after burning through thermoconverter, thereby saves the energy.

This intellecture property of primary enforcement that all are above-mentioned is not set restriction this product innovation of other forms of enforcement and/or novel method.Those skilled in the art will utilize this important information, and foregoing is revised, to realize similar implementation status.But all modifications or transformation belong to the right of reservation based on product innovation of the present invention.

The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any professional and technical personnel of being familiar with possibly utilize the technology contents of above-mentioned announcement to change or be modified as the equivalent embodiment of equivalent variations.But everyly do not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and remodeling that above embodiment did, still belong to the protection domain of technical scheme of the present invention according to technical spirit of the present invention.

Claims (10)

1. a charing sludge treatment method is characterized in that, said method comprising the steps of:
Drying step;
The charing step;
The screening step;
The back-mixing step;
The vent gas treatment step.
2. according to the said charing sludge treatment method of claim 1, it is characterized in that said drying step further comprises: material gets into drying machine through collecting, through drying treatment to water ratio 10%~40%.
3. according to the said charing sludge treatment method of claim 1, it is characterized in that said charing step further comprises: material gets into charring furnace through after the drying treatment; Said charring furnace adopts electric energy for starting the energy, when temperature device in the charring furnace reach material handle temperature required after, under the situation that material constantly drops into, the motor that drives mass transport is still in running, the power dump of heating usefulness; The inflammable gas that material produces in the charing disposal process directly burns in charring furnace inside, and the heat energy of generation is used for the required heat of carbonization reaction; Tail gas after the burning that produces gets into thermoconverter through piping, through high-temperature steam or thermal oil heat is transferred to drying machine through piping, is used for practicing thrift the heat exhaustion of drying process.
4. according to the said charing sludge treatment method of claim 1; It is characterized in that said screening step further comprises: after the material process charing step process, become granular and/or Powdered black solid particle; After the screening plant screening, store up, pack, transport after the screen overflow cooling.
5. according to the said charing sludge treatment method of claim 1; It is characterized in that; Said back-mixing step further comprises: all the other screen underflows that account for product total amount 20%~60% get into drying machine through pipeline; Be used to play the effect of nucleation granulation and drying aid, reduce the energy expenditure in the drying process.
6. according to the said charing sludge treatment method of claim 1; It is characterized in that; Said vent gas treatment step further comprises: through the tail gas of the shock heating amount recovery of said carbonization step; And the tail gas that produces in the drying process gets into dedusting, condensing works through pipeline, after fully lowering the temperature and removing suspended solid, passes through and discharges after exhaust gas processing device reaches harmless treatment.
7. an equipment that uses like each said charing sludge treatment method in the claim 1~6 is characterized in that: comprise drying machine and charring furnace; It is characterized in that said charring furnace further comprises: top (1), inwall (2), furnace chamber, hopper (3), block-proof type rotary valve (4), preheating and auxiliary carbonizing tube (5), main carbonizing tube (6), high-temperature rotary valve (7), cooling pipe (8), material outlet (9) and gas line (17).
8. according to the said equipment of claim 7, it is characterized in that,
Said top (1) is detachable, is used to make things convenient for maintenance, the replacing of internal part;
Said inwall (2) is a lagging material;
The top of said inwall (2) and said top (1) combine, and are the open type structure, cover, reinforce with titanium plate, are used for reflect heat to said device interior;
The bottom of said inwall (2) and both sides further are provided with wire spiral respectively, when said equipment uses, at first through wire spiral said furnace chamber are heated to the carbonization reaction temperature, add material then;
Said hopper (3) is used in equipment, throwing in material.
9. according to the said equipment of claim 7, it is characterized in that,
Said hopper (3) inside further is provided with whipping appts, is used to prevent that mud from piling up, obstruction;
Said equipment in use, material gets into preheating and auxiliary carbonizing tube (5) through said block-proof type rotary valve (4);
Said block-proof type rotary valve (4) is used to stop upper air to get in preheating and the auxiliary carbonizing tube (5);
Said preheating and auxiliary carbonizing tube (5) are two one group, and said preheating and auxiliary carbonizing tube (5) inside further are provided with spiral promoting shaft, and the axle head of said spiral promoting shaft rotates with driven by motor, is used to promote material and advances;
Said equipment further is provided with drop pipe (10), and said drop pipe (10) is with said preheating and assist carbonizing tube (5) and main carbonizing tube (6) to link to each other.
10. according to the said equipment of claim 7, it is characterized in that,
Said high-temperature rotary valve (7) is used for preventing that a large amount of gas permeation that the carbonization reaction process produces from getting into said cooling pipe (8);
Said cooling pipe (8) outside further is provided with water jacket;
Said cooling is characterized in that according to the said equipment that is used for charing processing mud and feces of livestock and poultry of claim 1 pipe (8) is inner to be advanced with screw shaft;
Said cooling pipe (8) is used for the material processing of lowering the temperature, make it be lower than burning-point after, discharge through said material outlet (9);
Said equipment further is provided with gas port (11) and tracheae (12);
Said gas port (11) links to each other with said gas line (17) with said preheating and auxiliary carbonizing tube (5).
CN2010102619709A 2010-08-25 2010-08-25 Method for processing sludge by carbonization and equipment thereof CN102372414A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103449701A (en) * 2013-08-14 2013-12-18 湖州宜可欧环保科技有限公司 Method and device for refinery sludge carbonization treatment and carbon recovery
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CN105016602A (en) * 2015-07-15 2015-11-04 刘建波 Pipe chain-type sludge and fatlute continuous carbonization system

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Application publication date: 20120314