CN211227019U - Sludge carbonization cooperative technology complete equipment - Google Patents
Sludge carbonization cooperative technology complete equipment Download PDFInfo
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- CN211227019U CN211227019U CN201921991087.8U CN201921991087U CN211227019U CN 211227019 U CN211227019 U CN 211227019U CN 201921991087 U CN201921991087 U CN 201921991087U CN 211227019 U CN211227019 U CN 211227019U
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Abstract
The utility model discloses a mud carbonization is technical complete sets in coordination, its characterized in that: comprises a sludge incineration chamber, a low-oxygen low-temperature pyrolysis chamber, a high-temperature separator, a dryer and a carbonization furnace; the utility model discloses utilize mud carbonization collaborative technology, utilize the high temperature flue gas that produces after the sludge incineration to dry the mud of high moisture, the dry mud after the stoving sends into the pyrolysis carbonization under the interior low temperature state of anaerobic of carbide furnace, converts the organic matter into vapor, non-condensable gas and carbon, does not produce nitrogen oxide and oxysulfide at this in-process, has reduced the emission of initial pollutant. And 90% of heavy metal reacts with carbon to be converted into a crystalline state to exist, so that the function of solidification is achieved. Because the heat supply source is the sludge carbonized granular material, extra energy is reduced in complete equipment, the heat material is recycled, the sludge treatment capacity is greatly improved, sludge reduction, harmlessness and resource utilization are really realized, and the contradiction and the problem of pollution treatment and resource recycling are solved.
Description
Technical Field
The utility model belongs to the technical field of solid waste treatment, concretely relates to mud carbonization is technical complete sets in coordination.
Background
The current environmental pollution of China is serious, pollutants accumulated for decades are discharged randomly, pollute the atmosphere, pollute water bodies and soil, seriously threaten the survival of human beings, and endanger all animal and plant kingdoms. The national flower is strongly treated, the current government consumes huge capital to treat sewage, a large amount of sludge is left after water body purification and is difficult to treat, except a small part of sludge is used as fertilizer, the large part of sludge is used for landfill or open-air stacking, secondary pollution is caused, and even if the sludge is used as fertilizer, soil and water body are polluted. According to relevant reports, the annual sludge discharge amount of China exceeds 3000 million tons, the accumulation of sewage and sludge is continuously increased, and the sludge treatment is not slow at all.
SUMMERY OF THE UTILITY MODEL
At least one in defect or improvement demand more than prior art, the utility model provides a sludge carbonization is technical complete sets in coordination, it is the innovation theory of completely different with traditional form, utilize sludge carbonization in coordination technique, utilize the high temperature flue gas stoving high moisture's that sludge burns the back production mud, the dry mud after the stoving sends into carbonization stove inherent anaerobic microthermal state down pyrolysis carbonization, convert the organic matter into vapor, non-condensable gas and carbon, do not produce nitrogen oxide and oxysulfide at this in-process, the emission of initial pollutant has been reduced. And 90% of heavy metal reacts with carbon to be converted into a crystalline state to exist, so that the function of solidification is achieved. Because the heat supply source is the sludge carbonized granular material, heat and materials are recycled in the complete equipment, the sludge treatment capacity is greatly improved, sludge reduction, harmlessness and recycling are realized, and the contradiction and the problem of pollution treatment and resource recycling are solved.
In order to achieve the above object, according to an aspect of the present invention, there is provided a sludge carbonization cooperative technology kit, wherein: comprises a sludge incineration chamber, a low-oxygen low-temperature pyrolysis chamber, a high-temperature separator, a dryer and a carbonization furnace;
the sludge incineration chamber comprises an incineration chamber main body, a sludge incineration raw material inlet, a slag discharge pipe, an overflow port, a smoke outlet and an air distribution system; the sludge incineration raw material inlet is positioned at the upper part of the incineration chamber body and is used for introducing oxygen-containing gas into the incineration chamber body; the sludge incineration raw material inlet is positioned on the front wall of the incineration chamber main body and is used for inputting sludge incineration raw materials into the incineration chamber main body, and the incineration chamber main body is used for containing sludge and incinerating the sludge incineration raw materials; the slag discharging pipe is positioned at the lower part of the incineration chamber main body and is used for discharging sludge incineration ash; the overflow port is positioned at the rear part of the incineration chamber main body and is used for conveying fine granular sludge to the low-oxygen low-temperature pyrolysis chamber and further pyrolyzing the fine granular sludge; the smoke outlet is positioned at the upper part of the incineration chamber main body and used for outputting smoke after sludge incineration, the smoke outlet is communicated with the low-oxygen low-temperature pyrolysis chamber, and the smoke is used for supplying heat to the low-oxygen low-temperature pyrolysis chamber; the air distribution system is positioned at the bottom of the incineration chamber and is used for introducing oxygen-containing gas into the incineration chamber body;
the low-oxygen low-temperature pyrolysis chamber comprises a low-oxygen low-temperature pyrolysis chamber main body, an ash discharge pipe and a flue gas outlet; the low-oxygen low-temperature pyrolysis chamber body is positioned at the rear part of the incineration chamber body and is used for further pyrolyzing the fine granular sludge overflowing from the incineration chamber body; the ash discharge pipe is positioned at the bottom of the low-oxygen low-temperature pyrolysis chamber main body and used for discharging pyrolyzed ash; the flue gas outlet is positioned at the upper part of the rear wall of the low-oxygen low-temperature pyrolysis chamber main body; the device is used for discharging high-temperature flue gas;
the high-temperature separator comprises a high-temperature separator main body, a feed back pipe and an outlet smoke pipe; the high-temperature separator main body is positioned at the rear part of the low-oxygen low-temperature pyrolysis chamber, and the material return pipe is positioned at the lower part of the high-temperature separator main body and used for returning the separated fine sludge into the low-oxygen low-temperature pyrolysis chamber main body for further pyrolysis, so that the pyrolysis rate is improved; the outlet smoke pipe is positioned at the upper part of the high-temperature separator main body and used for supplying heat to the dryer and the carbonization furnace;
the dryer comprises a dryer main body, a wet sludge feeding pipe, a dry sludge discharging pipe, a high-temperature flue gas inlet and a waste gas outlet; the dryer main body is positioned at the rear part of the high-temperature separator and is used for drying wet sludge; the wet sludge feeding pipe is positioned at the upper part of the dryer main body and is used for inputting wet sludge; high-temperature flue gas enters the upper part of the dryer main body from the high-temperature flue gas inlet to supply heat to the dryer; the dry sludge discharge pipe is positioned at the lower part of the main body and used for discharging dry sludge; the waste gas outlet is positioned at the tail part of the main body and is used for discharging waste gas generated by drying the wet sludge and sending the waste gas into a flue gas purification system;
the carbonization furnace comprises a carbonization furnace main body, a carbonized discharge pipe, a high-temperature flue gas inlet, a waste gas outlet and an organic matter gas outlet; the carbonization furnace main body is positioned at the lower part of the dryer main body and is used for carbonizing the dry sludge from a dry sludge discharge pipe of the dryer; the high-temperature flue gas from the outlet flue pipe enters the upper part of the carbonization furnace main body through the high-temperature flue gas inlet and is used for providing heat for carbonized dry sludge; the carbonized discharge pipe is positioned at the lower part of the carbonization furnace main body and is used for discharging carbonized biological granular materials and sending the carbonized biological granular materials to the incineration chamber main body by a conveying machine for incineration; the waste gas outlet is positioned at the upper part of the carbonization furnace main body and is used for discharging waste gas generated by the carbonization furnace and sending the waste gas into the drying machine main body for waste heat utilization; the organic matter gas outlet is positioned on the upper part of the carbonization furnace main body and used for conveying the organic matter gas generated in the pyrolysis of the carbonization furnace to the incineration chamber main body for incineration.
Preferably, the overflow port is positioned on a partition wall between the incineration chamber body and the low-oxygen low-temperature pyrolysis chamber body and is used for overflowing fine particle materials.
Preferably, the sludge carbonization cooperative technology complete equipment further comprises an ash conveying pipe, and the ash conveying pipe is communicated with the slag discharge pipe and the ash discharge pipe and is used for collecting and conveying ash.
Preferably, the sludge incineration chamber is a fluidized bed pyrolysis incineration chamber.
Preferably, the incineration temperature of the incineration chamber main body is 850-950 ℃.
Preferably, the temperature of the flue gas output by the outlet smoke pipe is not lower than 800 ℃.
Preferably, a cooling device is arranged between the outlet smoke pipe and the high-temperature smoke inlet and is used for reducing the temperature of smoke entering the carbonization furnace main body.
Preferably, a cooling device is not arranged between the outlet smoke pipe and the high-temperature smoke inlet.
Preferably, the water content of the sludge incineration raw material is not more than 20%, and the heat value is not less than 1200 kcal/kg.
Preferably, the moisture content of the wet sludge is less than 60%; the water content of the dry sludge is not more than 20%.
Preferably, the organic matter outlet pipe is connected to the incineration chamber.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect:
1. the utility model discloses a sludge carbonization is technical complete sets in coordination adopts two sections advanced fluidized combustion, divides two parts with the combustion chamber, and the centre is separated by the partition wall, and the front portion is the combustion chamber, and the rear portion is hypoxemia low temperature pyrolysis chamber. After the carbonized granular materials are sent into a front incineration chamber, the crude materials are pyrolyzed and cracked in the section, and heat is released; the heated fine particle materials automatically flow into the low-oxygen low-temperature pyrolysis chamber at the rear part from an overflow port on the intermediate partition wall, no fresh air is sent into the zone, and the fine particle materials are subjected to thermal decomposition treatment in an anoxic state. The colloid material such as carbon dioxide, carbon monoxide, methane organic matter, tar and asphalt is subjected to chromatography and enters the upper high-temperature smoke gas for combustion; the fine particles deposited in the section have long retention time, so that the toxic and harmful matters are disinfected, decomposed, cracked, deodorized and organic content effective in purifying sludge.
2. The utility model discloses a sludge carbonization is technical complete sets in coordination, when maintaining whole sludge carbonization is technical complete sets's operation in coordination, reduced the heat energy of extra provision, the lime-ash that remains after the sludge pyrolysis burns has good activity, can be used to blend cement and make building material. The high-temperature flue gas generated after the sludge incineration is used for drying the sludge with high moisture, the dried sludge is sent into a carbonization furnace for pyrolysis and carbonization and then sent into an incineration furnace for incineration, circulation is formed, the sludge treatment capacity is greatly improved, the sludge is reduced, harmless and recycled, zero emission is realized, and thus the sludge is thoroughly treated.
3. The sludge carbonization cooperative technology complete equipment of the utility model is used for carrying out pyrolysis carbonization treatment on sludge, and is particularly suitable for sludge with high moisture and low calorific value (for example, wet sludge entering a dryer can reach 60 percent of moisture, and sludge incineration raw materials entering a sludge incineration chamber as incineration raw materials can reach less than 20 percent of moisture and the calorific value can be more than 1200 kilocalories/kilogram); the obtained ash has good activity and can be used for being blended with cement to be used as a building material. The utility model adopts a combined cycle treatment for sludge in a fluidized incineration chamber, a low-oxygen low-temperature pyrolysis chamber, a high-temperature separator, a dryer and a carbonization furnace, wherein the fluidized incineration chamber adopts a heat insulation design (for example, no heating surface is arranged in the fluidized bed incineration chamber, and the wall adopts heat insulation materials with good heat insulation performance), and the retention time of the sludge in the combustion chamber is prolonged by a blower with high pressure head; the heat released after the sludge incineration is used for raising the temperature of a furnace body, smoke and ash (including the ash after the sludge incineration), and the temperature of a fluidized incineration chamber is kept at 850-950 ℃ by continuously heating the subsequent sludge carbonized granular materials entering the furnace, so that the sludge can achieve good effects of incineration, reduction, harmlessness and recycling; the temperature of the flue gas entering the dryer body through the smoke outlet is not lower than 800 ℃, so that the sludge is carbonized after dehydration treatment and is sent into the sludge incineration chamber for incineration, heat energy is fully utilized, the utilization effect of the fluidized incineration chamber is greatly improved, the sludge treatment capacity is improved, the incineration process and the incineration system are greatly simplified, the structure is simple, energy is saved, consumption is reduced, and initial investment and operation cost are reduced.
4. The utility model discloses a sludge carbonization is technical complete sets in coordination, collects and carries the lime-ash through the lime-ash conveyer pipe, as the building materials to the lime-ash storehouse, has played waste utilization's effect.
To sum up, the utility model discloses a sludge carbonization collaborative technology complete sets handles mud through fluidization combustion chamber, hypoxemia low temperature pyrolysis room, high temperature separator, drying-machine, carbide furnace, makes the mud that directly is used for carbide furnace and fluidization to burn (promptly, sludge incineration raw materials) obtain and extrude the dehydration and the solid material after preliminary drying for sewage treatment system, and its moisture does not contain more than 20%. For example, the sludge thrown into the sludge pyrolysis furnace device can be directly fed into the furnace, so that external energy is reduced, and the energy-saving effect is good.
The utility model discloses can directly use moisture content not more than 20%, the particle diameter is at the bulk form mud (being mud carbonization raw materials) of 0-8 mm scope, and the heat that obtains through mud self burning maintains the operation of whole fluidization pyrolysis oven device, and the lime-ash that the mud burned back obtained has good activity, can be used to blend cement and make building material. For example, the water content of the sludge incineration raw material (i.e., the incineration raw material containing sludge used in the sludge incinerator) is not more than 20%, and the calorific value of the sludge incineration raw material is not less than 1200 kcal/kg; the water content of the dried sludge entering the furnace is not more than 20 percent; the moisture content of the wet sludge entering the dryer is less than 60 percent.
The utility model discloses utilize the high temperature flue gas that produces after the sludge incineration, get into the drying-machine, heat energy make full use of through fluidization incineration chamber exhanst gas outlet. High-temperature flue gas generated after sludge incineration is sent into a dryer to dry sludge with the moisture content of 60 percent and the sludge is dried to the moisture content of less than 20 percent, and then the sludge is conveyed into a fluidized incinerator to be combusted, so as to form circulation. No waste is discharged in the whole treatment process, and harmful gas in the discharged smoke reaches the requirements of the national environmental protection standard after purification treatment.
Drawings
FIG. 1 is a schematic overall view of a sludge carbonization collaborative technology kit according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a sludge incineration chamber;
FIG. 3 is a schematic view of the structure of a low-oxygen low-temperature pyrolysis furnace;
FIG. 4 is a schematic diagram of a high temperature separator;
fig. 5 is a schematic view of a structure of a dryer;
fig. 6 is a schematic view of the structure of the carbonization furnace.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to the following embodiments.
As a preferred embodiment of the present invention, as shown in fig. 1-5, the present invention provides a sludge carbonization collaborative technology complete equipment, which comprises a sludge incineration chamber 1, a low-oxygen low-temperature pyrolysis chamber 2, a high-temperature separator 3, a dryer 4, and a carbonization furnace 5.
The sludge incineration chamber 1 comprises an incineration chamber main body 1-1, a sludge incineration raw material inlet 1-2, a slag discharge pipe 1-3, an overflow port 1-4, a smoke outlet 1-5 and an air distribution system 1-6; the sludge incineration raw material inlet 1-2 is positioned at the upper part of the incineration chamber body 1-1 and is used for introducing oxygen-containing gas into the incineration chamber body 1-1; the sludge incineration raw material inlet 1-2 is positioned on the front wall of the incineration chamber body 1-1 and is used for inputting sludge incineration raw materials into the incineration chamber body 1-1, and the incineration chamber body 1-1 is used for containing sludge and incinerating the sludge incineration raw materials; the slag discharge pipe 1-3 is positioned at the lower part of the incineration chamber main body 1-1 and is used for discharging sludge incineration ash; the overflow port 1-4 is positioned at the rear part of the incineration chamber main body 1-1 and is used for conveying fine granular sludge to the low-oxygen low-temperature pyrolysis chamber and further pyrolyzing the fine granular sludge; the smoke outlet 1-5 is positioned at the upper part of the incineration chamber body 1-1 and is used for outputting smoke after sludge incineration, the smoke outlet 1-5 is communicated with the low-oxygen low-temperature pyrolysis chamber 2, and the smoke is used for supplying heat to the low-oxygen low-temperature pyrolysis chamber 2; the air distribution system 1-6 is positioned at the bottom of the incineration chamber and is used for introducing oxygen-containing gas into the incineration chamber body 1-1;
the low-oxygen low-temperature pyrolysis chamber 2 comprises a low-oxygen low-temperature pyrolysis chamber main body 2-1, an ash discharge pipe 2-2 and a flue gas outlet 2-3; the low-oxygen low-temperature pyrolysis chamber main body 2-1 is positioned at the rear part of the incineration chamber main body 1-1 and is used for further pyrolyzing the fine granular sludge overflowing from the incineration chamber main body 1-1; the ash discharge pipe 2-2 is positioned at the bottom of the low-oxygen low-temperature pyrolysis chamber main body 2-1 and is used for discharging pyrolyzed ash; the flue gas outlet 2-3 is positioned at the upper part of the rear wall of the low-oxygen low-temperature pyrolysis chamber main body 2-1; the device is used for discharging high-temperature flue gas;
the high-temperature separator 3 comprises a high-temperature separator main body 3-1, a feed back pipe 3-2 and an outlet smoke pipe 3-3; the high-temperature separator main body 3-1 is positioned at the rear part of the low-oxygen low-temperature pyrolysis chamber 2, and the material return pipe 3-2 is positioned at the lower part of the high-temperature separator main body 3-1 and is used for returning the separated fine sludge into the low-oxygen low-temperature pyrolysis chamber main body 2-1 for further pyrolysis, so that the pyrolysis rate is improved; the outlet smoke pipe 3-3 is positioned at the upper part of the high-temperature separator main body 3-1 and is used for supplying heat to the dryer 4 and the carbonization furnace 5;
the dryer 4 comprises a dryer main body 4-1, a wet sludge feeding pipe 4-2, a dry sludge discharging pipe 4-3, a high-temperature flue gas inlet 4-4 and a waste gas outlet 4-5; the dryer main body 4-1 is positioned at the rear part of the high-temperature separator 3 and is used for drying wet sludge; the wet sludge feeding pipe 4-2 is positioned at the upper part of the dryer main body 4-1 and is used for inputting wet sludge; high-temperature flue gas enters the upper part of the dryer main body 4-1 from the high-temperature flue gas inlet 4-4 to supply heat for the dryer; the dry sludge discharging pipe 4-3 is positioned at the lower part of the drying main body 4-1 and is used for discharging dry sludge; the waste gas outlet 4-5 is positioned at the tail part of the main body 4-1 and is used for discharging waste gas generated by drying the wet sludge and sending the waste gas into a flue gas purification system;
the carbonization furnace 5 comprises a carbonization furnace main body 5-1, a carbonized discharge pipe 5-2, a high-temperature flue gas inlet 5-3 and a waste gas outlet 5-4; the carbonization furnace main body 5-1 is positioned at the lower part of the dryer main body 4-1 and is used for carbonizing the dry sludge from a dry sludge discharge pipe 4-3 of the dryer; the high-temperature flue gas from the outlet flue pipe 3-3 enters the upper part of the carbonization furnace main body 5-1 through the high-temperature flue gas inlet 5-3 and is used for providing heat for carbonized dry sludge; the carbonized material discharge pipe 5-2 is positioned at the lower part of the carbonization furnace main body 5-1 and is used for discharging carbonized biological granular materials and sending the carbonized biological granular materials to the incineration chamber main body 1-1 by a conveying machine for incineration; the waste gas outlet 5-4 is positioned at the upper part of the main body 5-1 of the carbonization furnace, is used for discharging waste gas generated by the carbonization furnace and is sent into the main body 4-1 of the dryer for waste heat utilization; the organic gas outlet 5-5 is positioned at the upper part of the carbonization furnace main body 5-1 and is used for conveying the organic gas generated in the pyrolysis of the carbonization furnace to the incineration chamber main body 1-1 for incineration.
Preferably, the overflow port 1-4 is located on the partition wall between the incineration chamber body 1-1 and the low-oxygen low-temperature pyrolysis chamber body 2-1 and is used for overflowing fine particle materials.
Preferably, the sludge carbonization cooperative technology complete equipment further comprises an ash conveying pipe 6, and the ash conveying pipe 6 is communicated with the slag discharge pipe 1-3 and the ash discharge pipe 2-2 and is used for collecting and conveying ash.
Preferably, the sludge incineration chamber 1 is a fluidized bed pyrolysis incineration chamber.
Preferably, the incineration temperature of the incineration chamber body 1-1 is 850 ℃ to 950 ℃.
Preferably, the temperature of the flue gas output by the outlet smoke pipe 3-3 is not lower than 800 ℃.
Preferably, a cooling device is arranged between the outlet smoke pipe 3-3 and the high-temperature smoke inlet 5-3 and is used for adjusting the temperature of smoke entering the carbonization furnace main body 5-1.
Preferably, no cooling device is arranged between the outlet smoke pipe 3-3 and the high-temperature smoke inlet 4-4.
Preferably, the water content of the sludge incineration raw material is not more than 20%, and the heat value is not less than 1200 kcal/kg.
Preferably, the moisture content of the wet sludge is less than 60%; the water content of the dry sludge is not more than 20%.
Preferably, the organic matter outlet pipe is connected to the incineration chamber.
Example 1
As a preferred embodiment of the present invention, as shown in fig. 1-5, the sludge carbonization collaborative technology complete equipment in this embodiment 1 includes a sludge incineration chamber 1, a low-oxygen low-temperature pyrolysis chamber 2, a high-temperature separator 3, a dryer 4, a carbonization furnace 5, and an ash conveying pipe 6.
The sludge incineration chamber 1 is a fluidized incineration chamber and comprises an incineration chamber main body 1-1, a sludge incineration raw material inlet 1-2, a slag discharge pipe 1-3, an overflow port 1-4, a smoke outlet 1-5 and an air distribution system 1-6, wherein the sludge incineration raw material inlet 1-2 is positioned at the upper part of the incineration chamber main body 1-1 and is used for introducing oxygen-containing gas into the incineration chamber main body 1-1; the sludge incineration raw material inlet 1-2 is positioned on the front wall of the incineration chamber body 1-1 and is used for inputting sludge incineration raw materials into the incineration chamber body 1-1, and the incineration chamber body 1-1 is used for containing sludge and incinerating the sludge incineration raw materials; the slag discharge pipe 1-3 is positioned at the lower part of the incineration chamber main body 1-1 and is used for discharging sludge incineration ash; the overflow port 1-4 is positioned at the rear part of the incineration chamber main body 1-1 and is used for conveying small particle materials to the low-oxygen low-temperature pyrolysis chamber and further pyrolyzing the small particle materials; the smoke outlet 1-5 is positioned at the upper part of the incineration chamber body 1-1 and is used for outputting smoke after sludge incineration, the smoke outlet 1-5 is communicated with the low-oxygen low-temperature pyrolysis chamber 2, and the smoke is used for supplying heat to the low-oxygen low-temperature pyrolysis chamber 2; the air distribution system 1-6 is positioned at the bottom of the incineration chamber and is used for introducing oxygen-containing gas into the incineration chamber body 1-1.
The low-oxygen low-temperature pyrolysis chamber body 2 is positioned at the rear part of the incineration chamber body 1-1 and is used for further pyrolyzing the fine granular sludge overflowing from the incineration chamber body 1-1; the ash discharge pipe 2-2 is positioned at the bottom of the low-oxygen low-temperature pyrolysis chamber main body 2-1 and is used for discharging pyrolyzed ash; the flue gas outlet 2-3 is positioned at the upper part of the rear wall of the low-oxygen low-temperature pyrolysis chamber main body 2-1; used for discharging high-temperature flue gas.
The high-temperature separator 3 is positioned at the rear part of the low-oxygen low-temperature pyrolysis chamber 2; the feed back pipe 3-2 is positioned at the lower part of the high-temperature separator main body 3-1 and is used for feeding back the separated fine sludge into the low-oxygen low-temperature pyrolysis chamber main body 2-1 for further pyrolysis, so that the pyrolysis rate is improved; the outlet flue pipe 3-3 is located at the upper part of the high temperature separator main body 3-1 and is used for supplying heat to the dryer 4.
The drying machine 4 is positioned at the rear part of the high-temperature separation 3 and is used for drying wet sludge; the wet sludge feeding pipe 4-2 is positioned at the upper part of the dryer body 4-1 and is used for inputting wet sludge with the moisture content of 60 percent; the dry sludge discharging pipe 4-3 is positioned at the lower part of the drying main body 4-1 and is used for discharging dry sludge with the water content of 20 percent; the waste gas outlet 4-4 is positioned at the tail part of the main body 4-1 and is used for discharging waste gas generated by the wet sludge of the dryer and sending the waste gas into a flue gas purification system.
The carbonization furnace 5 is positioned at the lower part of the dryer main body 4-1 and is used for carbonizing the dry sludge from the dryer outlet 4-3; the high-temperature flue gas enters the upper part of the main body 5-1 of the carbonization furnace from the high-temperature flue gas inlet 4-4 and is used for providing heat for carbonized dry sludge; the carbonized material discharge pipe 5-2 is positioned at the lower part of the carbonization furnace main body 5-1 and is used for discharging carbonized biological granular materials with the moisture content of 1.5 percent and sending the carbonized biological granular materials into the incineration chamber main body 1-1 by a conveying machine for incineration; the waste gas outlet 5-4 is positioned at the upper part of the main body 5-1 of the carbonization furnace, is used for discharging waste gas generated by the carbonization furnace and is sent into the main body 4-1 of the dryer for waste heat utilization; the organic gas outlet 5-5 is positioned at the upper part of the carbonization furnace main body 5-1 and is used for conveying the organic gas generated in the pyrolysis of the carbonization furnace to the incineration chamber main body 1-1 for incineration.
In the embodiment 1, high-temperature flue gas and a part of dust particles carried by the high-temperature flue gas generated after the sludge is pyrolyzed and incinerated flow into the upper part of the hearth, sludge fine particles in the furnace enter the low-oxygen low-temperature pyrolysis chamber from the overflow port for further pyrolysis due to the fluidization effect, and the pyrolysis rate is improved.
The high-temperature flue gas outlet 2-3 of the low-oxygen low-temperature pyrolysis chamber main body 2-1 corresponds to the flue gas outlet 1-5 of the sludge incineration chamber 1, the temperature is not lower than 800 ℃, the ash discharge pipe 2-2 can be made of heat-resistant materials, and the heat resistance of the ash discharge pipe 2-2 is improved.
The overflow port 1-4 is used for introducing fine-grained sludge into the low-oxygen low-temperature pyrolysis chamber main body 2-1, and the sludge is discharged from the low-oxygen low-temperature pyrolysis chamber main body 2-1 through the ash discharge pipe 2-2 after being further pyrolyzed and is conveyed to the ash residue warehouse 6 through the ash residue conveying system 5.
The mud that the fluidization incineration chamber is used for fluidization incineration obtains and extrudees dehydration and the solid material that moisture is less than 20% after preliminary drying for sewage treatment system, and this fluidized bed combustor 1 is used for burning the mud incineration raw materials that the calorific value contains mud more than 1200kcal/kg (the main component of this mud incineration raw materials is the dry sludge who obtains through the drying-machine processing, as required, can cooperate with other fuel, improves the whole calorific value of mud incineration raw materials).
The low-oxygen low-temperature pyrolysis chamber 2 is used for further pyrolysis and decarburization under the working conditions of oxygen deficiency and low temperature, and is matched with relevant additives to be sprayed in, so that harmful substances are eliminated.
The high-temperature separator 3 is used for separating fine sludge carried in the flue gas and returning the fine sludge to the low-oxygen low-temperature pyrolysis chamber for further pyrolysis, so that the pyrolysis rate is improved, and the load of a dust removal system is reduced.
The dryer 4 is used for drying wet sludge with the moisture content of 60%, and solid materials with the moisture content of less than 20% can be obtained after drying.
And the ash conveying pipe 6 is communicated with the slag discharge pipe 1-3 and the ash discharge pipe 2-2, and is used for collecting and conveying ash for blending cement as a building material.
In this embodiment, no water wall heating surface is arranged in the fluidized bed combustor main body 1-1. The dry sludge is ignited by gas or charcoal after entering the furnace. The heat released after the sludge incineration is used for raising the temperature of the furnace body, the flue gas and the materials and continuously heating the subsequent sludge entering the furnace. The temperature of the hearth can be raised to 850-950 ℃, so that the sludge with high ash content, high moisture content and low calorific value can be fully carbonized, pyrolyzed and combusted.
In the sludge incineration process, smaller granular materials (generally with the particle size of 2-3 mm) which are lifted by airflow and suspended on the upper part of the fluidized bed enter the low-oxygen low-temperature pyrolysis chamber from the overflow port 1-4 for further pyrolysis, smaller particles are combusted on the upper part of the hearth, and coarse slag is discharged from the slag discharge pipe 1-3 to the ash slag conveying system 4 and is conveyed to the ash slag warehouse for use as building materials.
Example 2
This example 2 is substantially the same as the above example 1 except that the dry sludge feeding pipe 1-2 is made of a heat-resistant steel material so that it can maintain good performance at high temperature.
The incinerated sludge is discharged from the slag discharge pipe 1-3 and the ash discharge port 2-2 to the ash conveying pipe 6 and conveyed to the ash storehouse.
The sludge incineration raw material can be completely composed of carbonized granular materials, or can be composed of dry sludge and other raw materials (such as garbage); when the calorific value of the sludge incineration raw material reaches a certain height (such as 1200kcal/kg), the sludge pyrolysis furnace device reduces additional heat supply and can keep good operation.
Generally, the utility model discloses have following outstanding advantage:
the utility model discloses a sludge carbonization is technical complete sets in coordination adopts two sections advanced fluidized combustion, divides two parts with the combustion chamber, and the centre is separated by the partition wall, and the front portion is the combustion chamber, and the rear portion is hypoxemia low temperature pyrolysis chamber. After the carbonized granular materials are sent into a front incineration chamber, the crude materials are pyrolyzed and cracked in the section, and heat is released; the heated fine particle materials automatically flow into the low-oxygen low-temperature pyrolysis chamber at the rear part from an overflow port on the intermediate partition wall, no fresh air is sent into the zone, and the fine particle materials are subjected to thermal decomposition treatment in an anoxic state. The colloid material such as carbon dioxide, carbon monoxide, methane organic matter, tar and asphalt is subjected to chromatography and enters the upper high-temperature smoke gas for combustion; the fine particles deposited in the section have long retention time, so that the toxic and harmful matters are disinfected, decomposed, cracked, deodorized and organic content effective in purifying sludge.
The utility model discloses a sludge carbonization is technical complete sets in coordination, when maintaining whole sludge carbonization is technical complete sets's operation in coordination, reduced the heat energy of extra provision, the lime-ash that remains after the sludge pyrolysis burns has good activity, can be used to blend cement and make building material. The high-temperature flue gas generated after the sludge incineration is used for drying the sludge with high moisture, the dried sludge is sent into a carbonization furnace for pyrolysis and carbonization and then sent into an incineration furnace for incineration, circulation is formed, the sludge treatment capacity is greatly improved, the sludge is reduced, harmless and recycled, zero emission is realized, and thus the sludge is thoroughly treated.
The sludge carbonization cooperative technology complete equipment of the utility model is used for carrying out pyrolysis carbonization treatment on sludge, and is particularly suitable for sludge with high moisture and low calorific value (for example, wet sludge entering a dryer can reach 60 percent of moisture, and sludge incineration raw materials entering a sludge incineration chamber as incineration raw materials can reach less than 20 percent of moisture and the calorific value can be more than 1200 kilocalories/kilogram); the obtained ash has good activity and can be used for being blended with cement to be used as a building material. The utility model adopts a combined cycle treatment for sludge in a fluidized incineration chamber, a low-oxygen low-temperature pyrolysis chamber, a high-temperature separator, a dryer and a carbonization furnace, wherein the fluidized incineration chamber adopts a heat insulation design (for example, no heating surface is arranged in the fluidized bed incineration chamber, and the wall adopts heat insulation materials with good heat insulation performance), and the retention time of the sludge in the combustion chamber is prolonged by a blower with high pressure head; the heat released after the sludge incineration is used for raising the temperature of a furnace body, smoke and ash (including the ash after the sludge incineration), and the temperature of a fluidized incineration chamber is kept at 850-950 ℃ by continuously heating the subsequent sludge carbonized granular materials entering the furnace, so that the sludge can achieve good effects of incineration, reduction, harmlessness and recycling; the temperature of the flue gas entering the dryer body through the smoke outlet is not lower than 800 ℃, so that the sludge is carbonized after dehydration treatment and is sent into the sludge incineration chamber for incineration, heat energy is fully utilized, the utilization effect of the fluidized incineration chamber is greatly improved, the sludge treatment capacity is improved, the incineration process and the incineration system are greatly simplified, the structure is simple, energy is saved, consumption is reduced, and initial investment and operation cost are reduced.
The utility model discloses a sludge carbonization is technical complete sets in coordination, collects and carries the lime-ash through the lime-ash conveyer pipe, as the building materials to the lime-ash storehouse, has played waste utilization's effect.
To sum up, the utility model discloses a sludge carbonization collaborative technology complete sets handles mud through fluidization combustion chamber, hypoxemia low temperature pyrolysis chamber, high temperature separator, drying-machine, carbide furnace, makes the mud that directly is used for fluidization to burn (promptly, sludge incineration raw materials) obtain and extrude the dehydration and through the solid material after preliminary drying for sewage treatment system, and its moisture content is not higher than 20%. For example, the sludge thrown into the sludge pyrolysis furnace device can be directly fed into the furnace, so that external energy is reduced, and the energy-saving effect is good.
The utility model discloses can directly use moisture content not more than 20%, the particle diameter is at the bulk form mud (being the sludge incineration raw materials) of 0-8 mm scope, and the heat that obtains through mud self burning maintains the operation of whole fluidization pyrolysis oven device, and the lime-ash that the mud burned back obtained has good activity, can be used to blend cement and make building material. For example, the water content of the sludge incineration raw material (i.e., the incineration raw material containing sludge used in the sludge incinerator) is not more than 20%, and the calorific value of the sludge incineration raw material is not less than 1200 kcal/kg; the water content of the dried sludge entering the furnace is not more than 20 percent; the moisture content of the wet sludge entering the dryer is less than 60 percent.
The utility model discloses utilize the high temperature flue gas that produces after the sludge incineration, get into the drying-machine, heat energy make full use of through fluidization incineration chamber exhanst gas outlet. High-temperature flue gas generated after sludge incineration is sent into a dryer to dry sludge with the moisture content of 60 percent and the sludge is dried to the moisture content of less than 20 percent, and then the sludge is conveyed into a fluidized incinerator to be combusted, so as to form circulation. No waste is discharged in the whole treatment process, and harmful gas in the discharged smoke reaches the requirements of the national environmental protection standard after purification treatment.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A sludge carbonization cooperative technology complete equipment is characterized in that: comprises a sludge incineration chamber (1), a low-oxygen low-temperature pyrolysis chamber (2), a high-temperature separator (3), a dryer (4) and a carbonization furnace (5);
the sludge incineration chamber (1) comprises an incineration chamber main body (1-1), a sludge incineration raw material inlet (1-2), a slag discharge pipe (1-3), an overflow port (1-4), a smoke outlet (1-5) and an air distribution system (1-6); the sludge incineration raw material inlet (1-2) is positioned at the upper part of the incineration chamber body (1-1) and is used for introducing oxygen-containing gas into the incineration chamber body (1-1); the sludge incineration raw material inlet (1-2) is positioned on the front wall of the incineration chamber main body (1-1) and is used for inputting sludge incineration raw materials into the incineration chamber main body (1-1), and the incineration chamber main body (1-1) is used for containing sludge and incinerating the sludge incineration raw materials; the slag discharge pipe (1-3) is positioned at the lower part of the incineration chamber main body (1-1) and is used for discharging sludge incineration ash; the overflow port (1-4) is positioned at the rear part of the incineration chamber main body (1-1) and is used for conveying fine granular sludge to the low-oxygen low-temperature pyrolysis chamber and further pyrolyzing the fine granular sludge; the smoke outlet (1-5) is positioned at the upper part of the incineration chamber main body (1-1) and is used for outputting smoke after sludge incineration, the smoke outlet (1-5) is communicated with the low-oxygen low-temperature pyrolysis chamber (2), and the smoke is used for supplying heat to the low-oxygen low-temperature pyrolysis chamber (2); the air distribution system (1-6) is positioned at the bottom of the incineration chamber and is used for introducing oxygen-containing gas into the incineration chamber body (1-1);
the low-oxygen low-temperature pyrolysis chamber (2) comprises a low-oxygen low-temperature pyrolysis chamber main body (2-1), an ash discharge pipe (2-2) and a flue gas outlet (2-3); the low-oxygen low-temperature pyrolysis chamber main body (2-1) is positioned at the rear part of the incineration chamber main body (1-1) and is used for further pyrolyzing the fine granular sludge overflowing from the incineration chamber main body (1-1); the ash discharge pipe (2-2) is positioned at the bottom of the low-oxygen low-temperature pyrolysis chamber main body (2-1) and is used for discharging pyrolyzed ash; the flue gas outlet (2-3) is positioned at the upper part of the rear wall of the low-oxygen low-temperature pyrolysis chamber main body (2-1); the device is used for discharging high-temperature flue gas;
the high-temperature separator (3) comprises a high-temperature separator main body (3-1), a feed back pipe (3-2) and an outlet smoke pipe (3-3); the high-temperature separator main body (3-1) is positioned at the rear part of the low-oxygen low-temperature pyrolysis chamber (2), and the material return pipe (3-2) is positioned at the lower part of the high-temperature separator main body (3-1) and is used for returning the separated fine sludge into the low-oxygen low-temperature pyrolysis chamber main body (2-1) for further pyrolysis, so that the pyrolysis rate is improved; the outlet smoke pipe (3-3) is positioned at the upper part of the high-temperature separator main body (3-1) and is used for supplying heat to the dryer (4) and the carbonization furnace (5);
the dryer (4) comprises a dryer main body (4-1), a wet sludge feeding pipe (4-2), a dry sludge discharging pipe (4-3), a high-temperature flue gas inlet (4-4) and a waste gas outlet (4-5); the dryer main body (4-1) is positioned at the rear part of the high-temperature separator (3) and is used for drying wet sludge; the wet sludge feeding pipe (4-2) is positioned at the upper part of the dryer main body (4-1) and is used for inputting wet sludge; high-temperature flue gas enters the upper part of the dryer main body (4-1) from the high-temperature flue gas inlet (4-4) to supply heat for the dryer; the dry sludge discharging pipe (4-3) is positioned at the lower part of the main body (4-1) and is used for discharging dry sludge; the waste gas outlet (4-5) is positioned at the tail part of the main body (4-1) and is used for discharging waste gas generated by drying the wet sludge and sending the waste gas into a flue gas purification system;
the carbonization furnace (5) comprises a carbonization furnace main body (5-1), a carbonized discharge pipe (5-2), a high-temperature flue gas inlet (5-3), a waste gas outlet (5-4) and an organic gas outlet (5-5); the carbonization furnace main body (5-1) is positioned at the lower part of the dryer main body (4-1) and is used for carbonizing the dry sludge from a dry sludge discharge pipe (4-3) of the dryer; the high-temperature flue gas from the outlet flue pipe (3-3) enters the upper part of the carbonization furnace main body (5-1) through the high-temperature flue gas inlet (5-3) and is used for providing heat for carbonized dry sludge; the carbonized discharge pipe (5-2) is positioned at the lower part of the carbonization furnace main body (5-1) and is used for discharging carbonized biological granular materials and sending the carbonized biological granular materials to the incineration chamber main body (1-1) by a conveying machine for incineration; the waste gas outlet (5-4) is positioned at the upper part of the main body (5-1) of the carbonization furnace, is used for discharging waste gas generated by the carbonization furnace and is sent into the main body (4-1) of the dryer for waste heat utilization; the organic matter gas outlet (5-5) is positioned at the upper part of the carbonization furnace main body (5-1) and used for conveying the organic matter gas generated in the pyrolysis of the carbonization furnace to the incineration chamber main body (1-1) for incineration.
2. The sludge carbonization synergy technology complete equipment set as claimed in claim 1, characterized in that:
the overflow port (1-4) is positioned on a partition wall between the incineration chamber main body (1-1) and the low-oxygen low-temperature pyrolysis chamber main body (2-1) and is used for overflowing fine particle materials.
3. The sludge carbonization synergy technology complete equipment set as claimed in claim 1, characterized in that:
the sludge carbonization collaborative technology complete equipment further comprises an ash conveying pipe (6), wherein the ash conveying pipe (6) is communicated with the slag discharge pipe (1-3) and the ash discharge pipe (2-2) and is used for collecting and conveying ash.
4. The sludge carbonization synergy technology complete equipment set as claimed in claim 1, characterized in that:
the sludge incineration chamber (1) is a fluidized bed pyrolysis incineration chamber.
5. The sludge carbonization synergy technology complete equipment set as claimed in claim 1, characterized in that:
the incineration temperature of the incineration chamber main body (1-1) is 850-950 ℃.
6. The sludge carbonization synergy technology complete equipment set as claimed in claim 1, characterized in that:
the temperature of the flue gas output by the outlet smoke pipe (3-3) is not lower than 800 ℃.
7. The sludge carbonization synergy technology complete equipment set as claimed in claim 1, characterized in that:
and a cooling device is arranged between the outlet smoke pipe (3-3) and the high-temperature smoke inlet (5-3) and is used for reducing the temperature of smoke entering the carbonization furnace main body (5-1).
8. The sludge carbonization synergy technology complete equipment set as claimed in claim 1, characterized in that:
and a cooling device is not arranged between the outlet smoke pipe (3-3) and the high-temperature smoke inlet (4-4).
9. The sludge carbonization synergy technology complete equipment set as claimed in claim 1, characterized in that:
the water content of the sludge incineration raw material is not more than 20%, and the heat value is not less than 1200 kcal/kg.
10. The sludge carbonization synergy technology complete equipment set as claimed in claim 1, characterized in that:
the moisture content of the wet sludge is less than 60%; the water content of the dry sludge is not more than 20%.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112079547A (en) * | 2020-08-21 | 2020-12-15 | 武汉齐宇天下环境科技有限公司 | Multistage pyrolysis and carbonization integrated sludge treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112079547A (en) * | 2020-08-21 | 2020-12-15 | 武汉齐宇天下环境科技有限公司 | Multistage pyrolysis and carbonization integrated sludge treatment method |
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