CN212051065U - Mobile system for treating sludge in villages and towns - Google Patents
Mobile system for treating sludge in villages and towns Download PDFInfo
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- CN212051065U CN212051065U CN202020307799.XU CN202020307799U CN212051065U CN 212051065 U CN212051065 U CN 212051065U CN 202020307799 U CN202020307799 U CN 202020307799U CN 212051065 U CN212051065 U CN 212051065U
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- 239000010802 sludge Substances 0.000 title claims abstract description 192
- 238000000197 pyrolysis Methods 0.000 claims abstract description 153
- 239000007789 gas Substances 0.000 claims abstract description 99
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000002910 solid waste Substances 0.000 claims abstract description 63
- 238000001035 drying Methods 0.000 claims abstract description 62
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000003546 flue gas Substances 0.000 claims abstract description 40
- 239000011343 solid material Substances 0.000 claims abstract description 40
- 239000003345 natural gas Substances 0.000 claims abstract description 32
- 230000003750 conditioning effect Effects 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 238000000746 purification Methods 0.000 claims abstract description 18
- 239000007787 solid Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 54
- 238000002485 combustion reaction Methods 0.000 claims description 47
- 239000002296 pyrolytic carbon Substances 0.000 claims description 26
- 238000005406 washing Methods 0.000 claims description 20
- 230000001143 conditioned effect Effects 0.000 claims description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 15
- 239000003513 alkali Substances 0.000 claims description 14
- 238000012216 screening Methods 0.000 claims description 10
- 239000000498 cooling water Substances 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000005338 heat storage Methods 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 abstract description 14
- 238000006297 dehydration reaction Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 description 22
- 239000000463 material Substances 0.000 description 20
- 239000010865 sewage Substances 0.000 description 16
- 238000000926 separation method Methods 0.000 description 12
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- 230000000694 effects Effects 0.000 description 10
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- 239000002699 waste material Substances 0.000 description 9
- 238000003756 stirring Methods 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 6
- 229920002401 polyacrylamide Polymers 0.000 description 6
- 239000002028 Biomass Substances 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 239000010813 municipal solid waste Substances 0.000 description 4
- 238000007873 sieving Methods 0.000 description 4
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- 230000002708 enhancing effect Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 238000005067 remediation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009270 solid waste treatment Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
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- -1 for example Substances 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
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Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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- Treatment Of Sludge (AREA)
Abstract
The utility model discloses a system for portable villages and small towns mud of handling, include: dehydration unit, drying unit, pyrolysis unit, cyclone and combustor, dehydration unit sled dress arranges, and the dehydration unit includes: conditioning device and dewatering device, drying unit includes: the device comprises a drying device and a buffer tank, wherein a pyrolysis unit comprises an inner barrel and an outer barrel, a rotating shaft is arranged in the inner barrel along the length direction of the inner barrel, shoveling plates which are distributed in a staggered manner are arranged on the outer wall of the rotating shaft at intervals, a dried sludge inlet, an organic solid waste inlet, a pyrolysis oil gas outlet and a solid material outlet are arranged on the inner barrel, the outer barrel is sleeved on the inner barrel, a heating space is formed between the outer barrel and the inner barrel, and a dry distillation hot air inlet and a dry distillation cold air outlet are arranged on the outer; the cyclone separator is provided with a pyrolysis oil gas inlet, a solid particle outlet and a purification pyrolysis oil gas outlet, and the combustor is provided with a primary air inlet, a secondary air inlet, a natural gas inlet, a purification pyrolysis oil gas inlet and a hot flue gas outlet.
Description
Technical Field
The utility model belongs to the technical field of sludge treatment, concretely relates to portable system of town's mud of handling.
Background
Along with the improvement of living standard and the continuous promotion of urban and rural integration, the concern of rural areas on environmental problems is gradually increased. And a large number of sewage treatment stations are built, so that the amount of the rural excess sludge is increased year by year. The sludge contains a large amount of harmful substances such as parasitic ova, pathogenic microorganisms, heavy metals and the like, is easy to decay and deteriorate, generates foul odor and pollutes the environment, and simultaneously contains rich organic matters, N, P, K and other nutritional ingredients, so that the sludge can be effectively utilized. Therefore, if the sludge cannot be properly treated, the normal social life of people is affected, as well as irreparable damage to the environment and waste of resources. However, at present, infrastructure construction in rural areas in China is incomplete, non-point source pollution control is not paid significant attention, and a sustainable and ordered sludge disposal scheme is not implemented, so that the pressure and market prospect of sludge disposal in rural areas in the future are huge.
Because the sewage treatment scale in rural areas is small, the sludge generation amount is small, the sewage treatment scale is wide, the sludge is highly dispersed, the generation amount is small, the conveying is difficult, and if the urban sludge treatment mode is directly applied to sewage treatment plants in villages and small towns, the sludge treatment facilities are difficult to normally operate or cannot achieve the expected treatment effect, so that the investment waste is caused. Therefore, the scheme for treating the sludge in the villages and the towns needs to be combined with the actual situation of the sewage treatment plant in the villages and the characteristics of the sludge in the villages, and is suitable for local conditions and sludge conditions.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the utility model is to provide a portable system of handling village sludge, adopt this system not only can solve the problem that rural area sludge output is little and highly dispersed and can't effectively handle according to local conditions, realize village sludge and organic solid useless utilization moreover, changing waste into valuables improves economic value.
In one aspect of the utility model, the utility model provides a portable system of handling villages and small towns mud. According to the utility model discloses an embodiment, the system includes:
a dewatering unit skid-mounted in an arrangement and comprising:
a conditioning device having a sludge inlet, a conditioner inlet, and a conditioned sludge outlet;
the dewatering device is provided with a conditioning sludge inlet and a dewatering sludge outlet, and the conditioning sludge inlet is connected with the conditioning sludge outlet;
a drying unit comprising:
the drying device is provided with a dehydrated sludge inlet, a dried sludge outlet, a dried hot air inlet and a dried cold air outlet, and the dehydrated sludge inlet is connected with the dehydrated sludge outlet;
the buffer tank is provided with a dry cold air inlet, an air distribution outlet, an air return outlet and a tail air outlet, and the dry cold air inlet is connected with the dry cold air outlet;
a pyrolysis unit comprising:
the inner cylinder body is internally provided with a rotating shaft along the length direction, shoveling plates which are distributed in a staggered manner are arranged on the outer wall of the rotating shaft at intervals, the inner cylinder body is provided with a dry sludge inlet, a mixed organic solid waste inlet, a pyrolysis oil gas outlet and a solid material outlet, and the dry sludge inlet is connected with the dry sludge outlet;
the outer cylinder body is sleeved on the inner cylinder body, a heating space is formed between the outer cylinder body and the inner cylinder body, the outer cylinder body is provided with a dry distillation hot air inlet and a dry distillation cold air outlet, and the dry distillation cold air outlet is connected with the dry hot air inlet after being air-distributed with the air distribution outlet;
the cyclone separator is provided with a pyrolysis oil gas inlet, a solid particle outlet and a purified pyrolysis oil gas outlet, and the pyrolysis oil gas inlet is connected with the pyrolysis oil gas outlet;
the combustor is provided with a primary air inlet, a secondary air inlet, a natural gas inlet, a purification pyrolysis oil gas inlet and a hot flue gas outlet, the secondary air inlet is connected with the return air outlet, the hot flue gas outlet is connected with the dry distillation hot air outlet, and the purification pyrolysis oil gas inlet is connected with the purification pyrolysis oil gas outlet.
According to the mobile sludge treatment system in villages and towns provided by the embodiment of the utility model, the skid-mounted dewatering unit can independently collect sludge from remote villages, so as to realize the integrated treatment of sludge in villages and towns, solve the problems of small sludge yield and high dispersion in rural areas, the collected sludge is mixed with a conditioner through the conditioning device, the obtained conditioned sludge is dewatered and then supplied to the drying unit for drying, and then the obtained dry sludge and the blended organic solid waste are supplied to an inner cylinder body of a pyrolysis unit, the addition of the blended organic solid waste can effectively solve the problem that the system cannot continuously produce due to insufficient heat in the sludge treatment process, and a rotating shaft with a shoveling plate can stir and propel the dry sludge and the blended organic solid waste supplied to the inner cylinder body, so that the dry sludge and the blended organic solid waste can be prevented from being bonded on the inner cylinder body wall, and the effect of enhancing heat transfer can be achieved. Meanwhile, the outer cylinder body is sleeved on the inner cylinder body, dry distillation hot air is supplied to a heating space formed between the outer cylinder body and the inner cylinder body to provide a heat source for the dry sludge of the inner cylinder body and the pyrolysis of the mixed organic solid waste, and the obtained dry distillation cold air and part of dry cold air obtained by the drying device are supplied to the drying device after air distribution to be used as the dry hot air; the pyrolysis oil gas obtained by pyrolysis in the inner cylinder body is subjected to cyclone separation through the cyclone separator, the obtained purified pyrolysis oil gas is supplied to the combustor, part of dry cold air obtained by the drying device is mixed with primary air and natural gas to be combusted, hot flue gas is obtained, and the hot flue gas is returned to the pyrolysis unit to be used as dry distillation hot air, so that the stepped utilization of a system heat source is realized. In addition, the dried sludge and the organic solid waste in the inner cylinder body are pyrolyzed to obtain a solid material containing pyrolytic carbon, and the pyrolytic carbon obtained by sieving the solid material can be used as a soil conditioner. Therefore, the system can solve the problem that the sludge in rural areas is low in yield and highly dispersed and cannot be effectively treated according to local conditions, and realizes resource utilization of the sludge in villages and towns and organic solid waste, so that waste is changed into valuable, and the economic value is improved.
In addition, the mobile system for treating sludge in villages and towns according to the above embodiment of the present invention may further have the following additional technical features:
preferably, the burner includes: the burner shell is provided with heat storage ceramics and a heat insulation layer from inside to outside, the secondary air inlet and the hot flue gas outlet are arranged on the burner shell, and the hot flue gas outlet is far away from the secondary air inlet; the combustion chamber is embedded into the combustor shell from the combustor shell, one end of the combustion chamber extending into the combustor shell is provided with an opening, the primary air inlet is arranged on the combustion chamber, and the opening of the combustion chamber is far away from the secondary air inlet; the purification pyrolysis oil gas pipeline extends into the combustion chamber and is away from the opening of the combustion chamber, and the purification pyrolysis oil gas inlet is communicated with the purification pyrolysis oil gas pipeline; a natural gas line extending into the combustion chamber and spaced from the opening of the combustion chamber, the natural gas inlet communicating with the natural gas line.
Preferably, the system further comprises: a water-cooled screw conveyor, the water-cooled screw conveyor comprising: the water-cooling inner cylinder body is internally provided with a spiral rotating shaft along the length direction thereof, the water-cooling inner cylinder body is provided with a solid material inlet and a water-cooling solid material outlet, and the solid material inlet is connected with the solid material outlet; the water-cooling outer cylinder body is sleeved on the water-cooling inner cylinder body, a water-cooling space is formed between the water-cooling outer cylinder body and the water-cooling inner cylinder body, and the water-cooling outer cylinder body is provided with a cooling water inlet and a heat exchange water outlet; the screening device is provided with a water-cooling solid material inlet, a pyrolytic carbon outlet and a solid waste outlet, wherein the water-cooling solid material inlet is connected with the water-cooling solid material outlet.
Preferably, the system further comprises: the device comprises a blending organic solid waste bin, wherein the blending organic solid waste bin is connected with a blending organic solid waste inlet through a spiral conveyer, the spiral conveyer is installed in the inclined upward direction, and a blank section is arranged at the tail end of the spiral conveyer.
Preferably, the system further comprises: the alkaline washing tower is provided with a tail gas inlet and an alkaline washing tail gas outlet, and the tail gas inlet is connected with the tail gas outlet; the active carbon filter is provided with an alkali washing tail gas inlet and a tail gas outlet which reaches the standard after filtration, and the alkali washing tail gas inlet is connected with the alkali washing tail gas inlet.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic diagram of a mobile sludge treatment system according to an embodiment of the present invention;
fig. 2 is a schematic longitudinal cross-sectional view of a burner in a mobile sludge treatment system according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a mobile sludge treatment system according to another embodiment of the present invention;
fig. 4 is a schematic flow diagram of a method for mobile sludge treatment of a town implemented by a mobile sludge treatment system according to an embodiment of the present invention;
fig. 5 is a schematic flow diagram of a method for mobile sludge treatment in a village and a town according to yet another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In one aspect of the utility model, the utility model provides a portable system of handling villages and small towns mud. According to an embodiment of the present invention, referring to fig. 1, the system includes: a dehydration unit 100, a drying unit 200, a pyrolysis unit 300, a cyclone 400, and a burner 500.
According to the utility model discloses an embodiment, dehydration unit 100 sled dress is arranged, and this sled dress is arranged dehydration unit 100 can arrive the remote village alone and collect mud, realizes the integration processing of villages and small towns mud, solves the problem of rural area mud output little and highly dispersed. Preferably, the dewatering unit 100 comprises a conditioning device 11 and a dewatering device 12, wherein the conditioning device 11 has a sludge inlet 111, a conditioner inlet 112 and a conditioned sludge outlet 113, and is adapted to mix the sludge and the conditioner to improve the dewatering performance of the sludge, resulting in conditioned sludge. Meanwhile, the dewatering device 12 is provided with a conditioned sludge inlet 121 and a dewatered sludge outlet 122, the conditioned sludge inlet 121 is connected with the conditioned sludge outlet 113, and the conditioned sludge obtained in the conditioning process is suitable for dewatering to obtain dewatered sludge.
Specifically, the water content of sludge generated in a sludge concentration tank of a town sewage treatment station is controlled to be 95-98 wt%, and then the sludge is pumped to a conditioning device 11 through a movable submersible sewage pump to be mixed with a conditioner, wherein the conditioner is at least one of polyaluminium chloride and polyacrylamide, and in the process, the adding amount of the polyaluminium chloride is 1-2 wt% of dry sludge; the adding amount of the polyacrylamide is 0.1-0.5 wt% of the dry sludge, and then the conditioned sludge is supplied to a dewatering device 12 for dewatering to obtain dewatered sludge with the water content of 60-80%, preferably, the dewatering device 12 can be a stack screw dewatering machine, a centrifugal machine or a plate and frame filter press.
According to the utility model discloses an embodiment, drying unit 200 includes drying device 21 and buffer tank 22, and wherein, drying device 21 has dehydration mud entry 211, dry sludge outlet 212, dry hot-blast entry 213 and dry cold wind export 214, and dehydration mud entry 211 links to each other with dehydration mud export 122, and is suitable for the dry mud and the hot-blast heat transfer of contact that obtains above-mentioned, obtains dry mud and dry cold wind. Specifically, the obtained dewatered sludge is subjected to layering by a plodder and then is supplied to a drying device 21, the drying device 21 performs heat exchange in a mode of combining indirect heating and direct heating, for example, the drying device can be a rotary drum dryer, a rotary kiln dryer or a belt dryer, preferably a belt dryer, the temperature of hot drying air is 220-110 ℃, the drying time is 40-90 min, the water content of the dried sludge obtained after drying is 20% -30%, meanwhile, the buffer tank 22 is provided with a cold drying air inlet 221, an air distribution outlet 222, an air return outlet 223 and a tail air outlet 224, and the cold drying air inlet 221 is connected with the cold drying air outlet 214 and is suitable for supplying the cold drying air obtained by the drying device 21 to the buffer tank 22 for temporary storage. Preferably, to increase the flexibility of the system of the present application, the drying unit 200 may also be skid mounted.
According to the embodiment of the present invention, the pyrolysis unit 300 comprises an inner cylinder 31 and an outer cylinder 32, wherein the inner cylinder 31 is provided with a rotation axis 311 along the length direction thereof, the outer wall of the rotation axis 311 is provided with shoveling plates 312 distributed in a staggered manner at intervals, the inner cylinder 31 is provided with a dry sludge inlet 313, a mixed organic solid waste inlet 314, a pyrolysis oil gas outlet 315 and a solid material outlet 316, the dry sludge inlet 313 is connected with the dry sludge outlet 212, the outer cylinder 32 is sleeved on the inner cylinder 31, a heating space 30 is formed between the outer cylinder 32 and the inner cylinder 31, the outer cylinder 32 is provided with a dry distillation hot air inlet 321 and a dry distillation cold air outlet 322, the dry distillation cold air outlet 322 and the air distribution outlet 222 are connected with the dry distillation hot air inlet 213, and the dry distillation cold air outlet 322 and the air distribution outlet 222 are suitable for supplying the obtained dry sludge and mixed organic solid waste to the pyrolysis, The oil gas and the solid material containing the pyrolytic carbon are pyrolyzed, and a part of the dry cold air and the dry distillation cold air stored in the buffer tank 22 are distributed and then returned to the drying device 21 to be used as dry hot air. Specifically, the blended organic solid waste may be organic solid waste with high organic content, such as waste oversize products, agricultural and forestry waste, for example, biomass, the obtained dried sludge and the blended organic solid waste are supplied into the inner cylinder 31 of the pyrolysis unit 300, the outer cylinder 32 is sleeved on the inner cylinder 31, dry distillation hot air (with the temperature of 700 to 900 ℃) is supplied to the heating space 30 formed between the outer cylinder 32 and the inner cylinder 31 to provide a heat source for pyrolysis of the dried sludge and the blended organic solid waste of the inner cylinder 31, the rotating shaft 311 with the shoveling plate 312 can stir and propel the dried sludge and the blended organic solid waste supplied into the inner cylinder 31, so that the dried sludge and the blended organic solid waste are pyrolyzed (the pyrolysis time is 30 to 90min), on one hand, bonding of the dried sludge and the blended organic solid waste on the inner cylinder wall can be avoided, on the other hand, the effect of heat transfer enhancement can be achieved, and the problem that the system cannot continuously produce due to insufficient heat in the sludge treatment process can be effectively solved by adding the blended organic solid waste, and the obtained dry distillation cold air and a part of the obtained dry cold air in the buffer tank 22 are supplied to the drying device 21 to be used as the dry hot air after being subjected to air distribution. The angle of the shoveling plate 312 on the rotating shaft 311 is not particularly limited as long as the stirring and propelling of the dry sludge and the blended organic solid waste in the inner cylinder 31 can be achieved. Preferably, to increase the flexibility of the system of the present application, the pyrolysis unit 300 may also be skid mounted.
Preferably, in order to effectively make up for the problem of low heat in the sludge pyrolysis process, the total mass of organic matters in the dried sludge and the organic solid waste is controlled to be 40-60% of the total mass of the dried sludge and the organic solid waste so as to match the heat balance of the whole system. Preferably, in order to realize the self-sealing of organic solid waste feeding, this application sets up the solid waste bin 33 of blending organic, and the solid waste bin 33 of blending organic links to each other through screw conveyer 331 with the solid waste entry 314 of blending organic, and screw conveyer 331 installs and screw conveyer 331 is terminal to be equipped with blank section in the slant to make the solid waste of blending organic form self-sealing through piling up, isolated barrel internal environment and outside UNICOM realize feeding and sealed integration.
According to the utility model discloses an embodiment, cyclone 400 has pyrolysis oil gas entry 401, solid particle export 402 and purifies pyrolysis oil gas export 403, and pyrolysis oil gas entry 401 links to each other with pyrolysis oil gas export 315, and is suitable for and carries out cyclone with the pyrolysis oil gas that produces in the barrel 31 in above-mentioned pyrolysis unit 300, obtains solid particle and purification pyrolysis oil gas. Preferably, the cyclone separator is made of high-temperature resistant materials.
According to the embodiment of the utility model, combustor 500 has a breeze entry 501, overgrate air entry 502, natural gas entry 503, purify pyrolysis oil gas entry 504 and hot exhanst gas outlet 505, overgrate air entry 502 links to each other with return air export 223, hot exhanst gas outlet 505 links to each other with dry distillation hot air outlet 321, it links to each other with purification pyrolysis oil gas outlet 403 to purify pyrolysis oil gas entry 504, and be suitable for the purification pyrolysis oil gas and the mixed combustion of breeze with the natural gas that obtains with the aforesaid, obtain the burning flue gas, then with the partly dry cold wind of the second that above-mentioned buffer tank 22 kept in as overgrate air and burning flue gas air distribution, obtain hot flue gas, and supply with hot flue gas to the hot space 30 of heating of pyrolysis unit 300 and use as the dry.
Further, referring to fig. 2, the burner 500 includes a burner housing 51, a combustion chamber 52, a clean pyrolysis oil gas line 53, and a natural gas line 54. The burner shell 51 is internally and externally provided with heat storage ceramic 511 and an insulating layer 512, a secondary air inlet 502 and a hot flue gas outlet 505 are arranged on the burner shell 51, the hot flue gas outlet 505 is arranged far away from the secondary air inlet 502, the combustion chamber 52 is embedded into the burner shell 51 from the burner shell 51, an opening 521 is formed in one end, extending into the burner shell 51, of the combustion chamber 52, the primary air inlet 501 is arranged on the combustion chamber 52, the opening 521 of the combustion chamber 52 is far away from the secondary air inlet 502, the purified pyrolysis oil gas pipeline 53 extends into the combustion chamber 52 and is far away from an air outlet of the combustion chamber 52, the purified pyrolysis oil gas inlet 504 is communicated with the purified pyrolysis oil gas pipeline 53, the natural gas pipeline 54 extends into the combustion chamber 52 and is far away from the opening 521 of the combustion chamber 52, and the natural gas inlet 503 is communicated with the natural gas pipeline 54. Specifically, the primary air is supplied to the combustion chamber 52 through the primary air inlet 501, the natural gas is supplied to the combustion chamber 52 through the natural gas pipeline 54 to be mixed with the clean pyrolysis oil gas supplied through the clean pyrolysis oil gas pipeline 53, preferably, the air outlet of the natural gas pipeline 54 is flush with the air outlet of the clean pyrolysis oil gas pipeline 53, then the air outlet of the natural gas pipeline 54 is provided with a normally open fire 541, so that the natural gas and the clean pyrolysis oil gas and the primary air are ignited to be combusted in the combustion chamber 52 in the normally open fire, the combusted hot flue gas is naturally cooled through the combustion chamber 52 at the front end of the natural gas pipeline 53 and then enters the combustor shell 51 through the opening 521 on the combustion chamber 52, that is, the natural gas pipeline 54 is arranged to extend into the combustion chamber 52 and have a distance from the opening 521 of the combustion chamber 52, and the natural gas pipeline 54 extends into the combustion chamber 52 and has a distance from the opening 521 of the combustion chamber 52, so that the high-temperature corrosion of the combustor shell 51 caused by the, the combustion flue gas entering the combustor shell 51 is mixed with the overfire air, the hot flue gas outlet 505 is arranged far away from the overfire air inlet 502, the mixing effect of the overfire air and the combustion flue gas can be improved, the situation that the overfire air which is just supplied is not mixed with the combustion flue gas and is discharged from the hot flue gas outlet (the temperature of the hot flue gas is 650-950 ℃) is avoided, meanwhile, the opening 521 of the combustion chamber 52 is arranged far away from the overfire air inlet 502, the situation that the overfire air is close to blow out normal open fire is avoided, and the heat storage ceramic 511 and the heat insulation layer 512 which are arranged on the combustor shell 51 can store heat and insulate the interior of the combustor shell 51, and heat loss is avoided. It should be noted that, a person skilled in the art may select and set the distance between the air outlet of the natural gas pipeline 54 and the opening 521 of the combustion chamber 52 and the distance between the air outlet of the natural gas pipeline 54 and the opening 521 of the combustion chamber 52 according to actual needs, and may also select the position relationship between the secondary air inlet 502 and the hot flue gas outlet 505 according to actual needs, and may also select a specific material of the insulating layer 512, as long as the above effects are achieved.
According to the mobile sludge treatment system in villages and towns provided by the embodiment of the utility model, the skid-mounted dewatering unit can independently collect sludge from remote villages, so as to realize the integrated treatment of sludge in villages and towns, solve the problems of small sludge yield and high dispersion in rural areas, the collected sludge is mixed with a conditioner through the conditioning device, the obtained conditioned sludge is dewatered and then supplied to the drying unit for drying, and then the obtained dry sludge and the blended organic solid waste are supplied to an inner cylinder body of a pyrolysis unit, the addition of the blended organic solid waste can effectively solve the problem that the system cannot continuously produce due to insufficient heat in the sludge treatment process, and a rotating shaft with a shoveling plate can stir and propel the dry sludge and the blended organic solid waste supplied to the inner cylinder body, so that the dry sludge and the blended organic solid waste can be prevented from being bonded on the inner cylinder body wall, and the effect of enhancing heat transfer can be achieved. Meanwhile, the outer cylinder body is sleeved on the inner cylinder body, dry distillation hot air is supplied to a heating space formed between the outer cylinder body and the inner cylinder body to provide a heat source for the dry sludge of the inner cylinder body and the pyrolysis of the mixed organic solid waste, and the obtained dry distillation cold air and part of dry cold air obtained by the drying device are supplied to the drying device after air distribution to be used as the dry hot air; the pyrolysis oil gas obtained by pyrolysis in the inner cylinder body is subjected to cyclone separation through the cyclone separator, the obtained purified pyrolysis oil gas is supplied to the combustor, part of dry cold air obtained by the drying device is mixed with primary air and natural gas to be combusted, hot flue gas is obtained, and the hot flue gas is returned to the pyrolysis unit to be used as dry distillation hot air, so that the stepped utilization of a system heat source is realized. In addition, the dried sludge and the organic solid waste in the inner cylinder body are pyrolyzed to obtain a solid material containing pyrolytic carbon, and the pyrolytic carbon obtained by sieving the solid material can be used as a soil conditioner. Therefore, the system can solve the problem that the sludge in rural areas is low in yield and highly dispersed and cannot be effectively treated according to local conditions, and realizes resource utilization of the sludge in villages and towns and organic solid waste, so that waste is changed into valuable, and the economic value is improved.
Further, referring to fig. 3, the system further includes a water-cooled screw conveyor 600 and a sieving device 700.
According to the embodiment of the utility model, water-cooling screw conveyer 600 includes the outer barrel 62 of barrel 61 and water-cooling in the water-cooling, wherein, arrange spiral rotation axis (not shown) along its length direction in the barrel 61 in the water-cooling, be equipped with solid material entry 601 and water-cooling solid material export 602 on the barrel 61 in the water-cooling, solid material entry 601 links to each other with solid material export 316, barrel 62 cover is established on barrel 61 in the water-cooling outside the water-cooling, and form water-cooling space 60 between barrel 62 and the water-cooling in the water-cooling, be equipped with cooling water entry 621 and heat transfer water export 622 on the barrel 62 outside the water-cooling. Specifically, to supplying with the cooling water in the outer barrel 62 of water-cooling, the solid state material that contains the pyrolytic carbon in the barrel 61 can be ordered about in the water-cooling through the rotation to spiral rotation axis for indirect heat transfer of the high temperature solid state material in barrel 61 in cooling water and the water-cooling obtains heat transfer water and water-cooling solid state material.
According to the embodiment of the utility model, screening plant 700 has water-cooling solid-state material entry 701, pyrolytic carbon export 702 and solid useless export 703, water-cooling solid-state material entry 701 links to each other with water-cooling solid-state material export 602, and be suitable for the water-cooling solid-state material that contains pyrolytic carbon that obtains the aforesaid and sieve, the separation obtains pyrolytic carbon and contains glass, nonmetal easy open can and other bulk materials that do not pyrolyze, this pyrolytic carbon can regard as soil amendment to use, improve crop output, alleviate greenhouse effect, restore contaminated soil etc. It should be noted that, the specific type of the screening device can be selected by those skilled in the art according to actual needs, as long as the separation of the pyrolytic carbon can be realized, and a cooling assembly is preferably arranged on the screening device.
Further, referring to fig. 3, the system further includes: a caustic tower 800 and an activated carbon filter 900.
According to the utility model discloses an embodiment, alkaline tower 800 has tail gas entry 801 and alkaline washing tail gas export 802, and tail gas entry 801 links to each other with tail gas export 224, and is suitable for another part dry cold wind that will keep in buffer tank 22 to wash with alkaline to obtain alkaline washing tail gas. It should be noted that, a person skilled in the art may select the alkali washing process according to actual needs, and details are not described here.
According to the utility model discloses an embodiment, activated carbon filter 900 has alkali wash tail gas entry 901 and filters tail gas export 902 up to standard, and alkali wash tail gas entry 901 links to each other with alkali wash tail gas entry 802, and is suitable for the alkali wash tail gas that obtains to the aforesaid to carry out the activated carbon adsorption filtration, obtains tail gas up to standard. It should be noted that, a person skilled in the art may select specific operations of the activated carbon adsorption according to actual needs, as long as the standard emission of the tail gas can be achieved, and details are not described here.
As described above, the mobile sludge treatment system of villages and towns according to the embodiment of the present invention has at least one of the following advantages:
(1) the skid-mounted equipment is flexibly mounted: independent skid-mounting of the dehydration unit and combined skid-mounting of the dehydration unit and the pyrolysis unit can be carried out based on the scale and remote degree of the sewage treatment plant in the villages and small towns, and the disposal mode is flexible;
(2) sludge and high-calorific-value organic solid waste are co-treated: the sludge and the high-calorific-value organic solid waste are supplied to the pyrolysis unit for cooperative treatment, so that the heat utilization of a system can be fully allocated, the problems of insufficient sludge treatment heat, excessive high-calorific-value solid waste treatment heat and the like are avoided, and the method has great feasibility in small-scale village and town solid waste treatment;
(3) a long open flame, a ceramic layer and a heat storage layer are additionally arranged in the combustion system, so that the problems of unstable flow and unstable combustion of pyrolysis oil are solved, the uniform temperature in the combustor is ensured, and the stability of hot flue gas discharged from the combustor is realized;
(4) the dry distillation cold air is subjected to gradient utilization of heat from the pyrolysis unit to the drying device, most of the dry cold air finally discharged out of the drying device returns to the burner for recycling, and a small part of the dry cold air is discharged to a tail gas system for purification and emission, so that the heat utilization rate is high, and the tail gas emission is small;
(5) the utility model discloses a shaft rotation in the pyrolysis unit adopts, and the urceolus is motionless, and sets up the flight of interval staggered distribution including the axle, when improving heat transfer efficiency, has increased the stirring of material, very big improvement the area of contact of heating medium with the material, improve pyrolysis efficiency.
For ease of understanding, the method of mobile treatment of sludge from villages and towns using the above system is described in detail below. According to an embodiment of the present invention, referring to fig. 4, the method includes:
s100: the sludge and the conditioner are supplied to a conditioning device to be mixed
In the step, the sludge and the conditioner are supplied to the conditioning device to be mixed, so that the dehydration performance of the sludge is improved, and the conditioned sludge is obtained. Specifically, the water content of sludge generated in a sludge concentration tank of a town sewage treatment station is controlled to be 95-98 wt%, then the sludge is pumped to a conditioning device through a movable submersible sewage pump to be mixed with a conditioning agent, the conditioning agent is at least one of polyaluminium chloride and polyacrylamide, and in the process, the adding amount of the polyaluminium chloride is 1-2 wt% of that of dry sludge; the addition amount of the polyacrylamide is 0.1-0.5 wt% of the dry sludge.
S200: the conditioned sludge is supplied to a dewatering device for dewatering
In this step, the conditioned sludge obtained as described above is supplied to a dewatering device and dewatered to obtain dewatered sludge. Specifically, the conditioned sludge is supplied to a dewatering device for dewatering to obtain dewatered sludge with the water content of 60-80%, and preferably, the dewatering device can be a stack screw dewatering machine, a centrifugal machine or a plate-and-frame filter press.
S300: supplying the dewatered sludge to a drying device for heat exchange with dry hot air, and supplying dry cold air to a buffer tank
In the step, the obtained dewatered sludge is pressed by a plodder and then is supplied to a drying device to contact with dry hot air for heat exchange, so that dry sludge and dry cold air are obtained, and the dry cold air is supplied to a buffer tank. Specifically, the drying device adopts a mode of combining indirect heating with direct heating for heat exchange, such as a rotary drum dryer, a rotary kiln dryer or a belt dryer, preferably a belt dryer, wherein the temperature of hot drying air is 220-110 ℃, the drying time is 40-90 min, the water content of dried sludge obtained after drying is 20-30%, and meanwhile, cold drying air obtained by the drying device is supplied to a buffer tank for temporary storage.
S400: supplying the dried sludge and the blended organic solid waste to a pyrolysis unit for indirect heat exchange with dry distillation hot air, distributing a part of the dry cold air and the dry distillation cold air stored in the buffer tank, and returning to the step S300 for use as the dry hot air
In the step, the obtained dry sludge and the blended organic solid waste are supplied to a pyrolysis unit to indirectly exchange heat with dry distillation hot air to obtain dry distillation cold air, pyrolysis oil gas and solid materials containing pyrolytic carbon, and a part of dry cold air stored in a buffer tank and the dry distillation cold air are distributed and then returned to a drying device to be used as the dry hot air. Specifically, the blended organic solid waste can be organic solid waste with high organic matter content such as garbage oversize products, agricultural and forestry waste and the like, for example, biomass, the obtained dried sludge and the blended organic solid waste are supplied into an inner cylinder of a pyrolysis unit, an outer cylinder is sleeved on the inner cylinder, and dry distillation hot air (with the temperature of 700-900 ℃) is supplied to a heating space formed between the outer cylinder and the inner cylinder to provide a heat source for pyrolysis of the dried sludge and the blended organic solid waste of the inner cylinder, a rotating shaft with a shoveling plate can stir and push the dried sludge and the blended organic solid waste supplied into the inner cylinder, so that the dried sludge and the blended organic solid waste are pyrolyzed (the pyrolysis time is 30-90 min), on one hand, the adhesion of the dried sludge and the blended organic solid waste on the inner cylinder wall can be avoided, on the other hand, the effect of heat transfer enhancement can be achieved, and the problem that the system cannot produce continuously due to insufficient heat in the sludge treatment process can be effectively solved by adding The dry distillation cold air obtained simultaneously with a part of the dry cold air obtained in the buffer tank 22 was supplied to a drying apparatus as dry hot air.
Preferably, in order to effectively solve the problem of low heat in the pyrolysis process of the sludge, the total mass of organic matters in the dried sludge and the organic solid waste is 40-60% of the total mass of the dried sludge and the organic solid waste so as to match the heat balance of the whole system.
S500: supplying pyrolysis oil gas to a cyclone separator for cyclone separation
In the step, the obtained pyrolysis oil gas is supplied to a cyclone separator for cyclone separation, and purified pyrolysis oil gas and solid particles are obtained.
S600: mixing and burning the natural gas, the purified pyrolysis oil gas and a part of dry cold air stored in the buffer tank, distributing air with secondary air to obtain hot flue gas, and supplying the hot flue gas to the step S400
In the step, the purified pyrolysis oil gas obtained by separating the natural gas from the cyclone and a part of the dry cold air stored in the buffer tank are mixed and combusted to obtain combustion flue gas, and then the combustion flue gas is distributed with secondary air to obtain hot flue gas, and the hot flue gas is supplied to the step S400 to be used as dry distillation hot air.
According to the mobile sludge treatment method in villages and towns of the embodiment of the utility model, the skid-mounted dewatering unit can independently collect sludge from remote villages, thereby realizing the integrated treatment of sludge in villages and towns, solving the problems of small sludge yield and high dispersion in rural areas, mixing the collected sludge with a conditioner through the conditioner, dehydrating the obtained conditioned sludge, then supplying the dehydrated conditioned sludge to the drying unit for drying, and then the obtained dry sludge and the blended organic solid waste are supplied to an inner cylinder body of a pyrolysis unit, the addition of the blended organic solid waste can effectively solve the problem that the system cannot continuously produce due to insufficient heat in the sludge treatment process, and a rotating shaft with a shoveling plate can stir and propel the dry sludge and the blended organic solid waste supplied to the inner cylinder body, so that the dry sludge and the blended organic solid waste can be prevented from being bonded on the inner cylinder body wall, and the effect of enhancing heat transfer can be achieved. Meanwhile, the outer cylinder body is sleeved on the inner cylinder body, dry distillation hot air is supplied to a heating space formed between the outer cylinder body and the inner cylinder body to provide a heat source for the dry sludge of the inner cylinder body and the pyrolysis of the mixed organic solid waste, and the obtained dry distillation cold air and part of dry cold air obtained by the drying device are supplied to the drying device after air distribution to be used as the dry hot air; the pyrolysis oil gas obtained by pyrolysis in the inner cylinder body is subjected to cyclone separation through the cyclone separator, the obtained purified pyrolysis oil gas is supplied to the combustor, part of dry cold air obtained by the drying device is mixed with primary air and natural gas to be combusted, hot flue gas is obtained, and the hot flue gas is returned to the pyrolysis unit to be used as dry distillation hot air, so that the stepped utilization of a system heat source is realized. In addition, the dried sludge and the organic solid waste in the inner cylinder body are pyrolyzed to obtain a solid material containing pyrolytic carbon, and the pyrolytic carbon obtained by sieving the solid material can be used as a soil conditioner. Therefore, the method can solve the problem that the sludge in rural areas cannot be effectively treated due to small yield and high dispersion according to local conditions, realizes resource utilization of the sludge in villages and towns and organic solid waste, changes waste into valuable, and improves economic value.
Further, referring to fig. 5, the method further includes:
s700: discharging the solid material containing pyrolytic carbon by a water-cooling screw conveyer
In the step, the obtained solid material containing the pyrolytic carbon is discharged through a water-cooling screw conveyor to obtain a water-cooling solid material. Specifically, to the internal cooling water that supplies with of water-cooling urceolus, the internal solid state material that contains the pyrolytic carbon of water-cooling inner tube can be ordered about through the rotation to spiral rotation axis for the indirect heat transfer of high temperature solid state material in cooling water and the water-cooling inner tube obtains heat transfer water and water-cooling solid state material.
S800: supplying water-cooled solid material to a screening device for separation
In the step, the obtained water-cooled solid materials are supplied to a screening device for separation, pyrolytic carbon and other bulk materials containing glass, nonmetal ring-pull cans and other materials which are not pyrolyzed are obtained through separation, and the pyrolytic carbon can be used as a soil conditioner to improve the crop yield, relieve the greenhouse effect, repair polluted soil and the like.
Further, referring to fig. 5, the method further includes:
s900: supplying another part of the dry cold air stored in the buffer tank to an alkaline tower for washing
In the step, the other part of the dry cold air stored in the buffer tank is supplied to an alkaline washing tower for washing, so that alkaline washing tail gas is obtained. It should be noted that, a person skilled in the art may select the alkali washing process according to actual needs, and details are not described here.
S1000: supplying the alkali washing tail gas to an activated carbon filter for adsorption and filtration
In the step, the obtained alkali washing tail gas is supplied to an activated carbon filter for adsorption and filtration so as to obtain the tail gas reaching the standard. It should be noted that, a person skilled in the art may select specific operations of the activated carbon adsorption according to actual needs, as long as the standard emission of the tail gas can be achieved, and details are not described here.
It should be noted that the features and advantages described above with respect to the mobile sludge treatment system are also applicable to the mobile sludge treatment method, and are not described in detail herein.
The invention will now be described with reference to specific examples, which are intended to be illustrative only and not to be limiting in any way.
Example 1
Sludge is collected by adopting a mode of independent skid mounting of a dehydration unit, and proper skid mounting places of a drying unit and a pyrolysis unit are selected near several villages and towns: the method comprises the steps that a dewatering pry is independently sent to a sewage treatment plant, sludge with the water content of 97% in the sewage treatment plant is conveyed to a conditioning device through a movable submersible sewage pump to be mixed with polyaluminium chloride (the adding amount of the polyaluminium chloride is 1-2 wt% of dry-based sludge), the obtained conditioned sludge is supplied to a dewatering device to obtain dewatered sludge with the water content of 80%, the dewatered sludge is temporarily stored in a storage bin, the storage bin is conveyed to a mounting place of a drying unit and pyrolysis unit prying device after being fully loaded, the dewatered sludge is conveyed to a belt type drying machine through a spiral conveyor, drying is carried out for 60min under the direct heating condition of drying hot air at 200 ℃, dried sludge with the water content of 20.7% and drying cold air are obtained, and the drying cold air; directly conveying the dried sludge to a pyrolysis unit, simultaneously supplying the dried sludge to biomass (the total mass of organic matters in the dried sludge and the organic matters in the biomass accounts for 40-60% of the total mass of the dried sludge and the biomass), indirectly heating for 40min by adopting 800 ℃ dry distillation hot air to generate solid materials containing pyrolytic carbon, pyrolysis oil gas and dry distillation cold air, and distributing the dry distillation cold air, a part of the dry distillation cold air and the dry distillation cold air; the pyrolysis oil gas is subjected to cyclone separation and then supplied to a combustor to be mixed and combusted with natural gas and primary air, and hot flue gas obtained after air distribution of the obtained combustion flue gas and a part of dry cold air in a buffer tank is supplied to a pyrolysis unit to be used as dry distillation hot air; and outputting the solid material containing the pyrolytic carbon by a water-cooling screw conveyer, and then screening the solid material in a screening device to obtain qualified biological pyrolytic carbon for local soil remediation. Detection shows that the heavy metal content of the obtained pyrolytic carbon except Zn is far lower than the secondary standard of greening planting soil, and all indexes are far lower than the sludge quality standard for land improvement and the sludge pollutant control standard of agricultural land.
Example 2
The mode that adopts dehydration unit and drying unit and pyrolysis unit to unite the sled dress to move, directly installs whole set of sled dress equipment at sewage treatment plant: conveying sludge with the water content of 97% in a sewage plant to a conditioning device through a movable submersible sewage pump, mixing the sludge with polyacrylamide (the addition amount of the polyacrylamide is 0.1-0.5 wt% of dry-based sludge), then supplying the obtained conditioned sludge to a dewatering device to obtain dewatered sludge with the water content of 80%, temporarily storing the dewatered sludge in a storage bin, conveying materials to a drying device through a screw conveyor, drying for 90min under the direct heating condition of 130 ℃ dry hot air to obtain dry sludge with the water content of 24.2% and dry cold air, and temporarily storing the dry cold air in a buffer tank; the method comprises the following steps of conveying dried sludge to a pyrolysis unit through a screw conveyor, mixing garbage oversize products conveyed by the screw conveyor (the total mass of organic matters in the dried sludge and the organic matters in the garbage oversize products accounts for 40-60% of the total mass of the dried sludge and the garbage oversize products), and indirectly heating for 60min by adopting dry distillation hot air at 750 ℃ to generate solid materials containing pyrolytic carbon, pyrolytic oil gas and dry distillation cold air; the pyrolysis oil gas is subjected to cyclone separation and then supplied to a combustor to be mixed and combusted with natural gas and primary air, hot flue gas obtained after air distribution of the obtained combustion flue gas and a part of dry cold air in a buffer tank is supplied to a pyrolysis unit to be used as dry distillation hot air, and solid materials containing pyrolysis carbon are output by a water-cooling spiral conveyor and then enter a screening chamber to be screened to obtain qualified pyrolysis carbon for local soil remediation.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (5)
1. A system for mobile treatment of sludge from a village or a town, comprising:
a dewatering unit skid-mounted in an arrangement and comprising:
a conditioning device having a sludge inlet, a conditioner inlet, and a conditioned sludge outlet;
the dewatering device is provided with a conditioning sludge inlet and a dewatering sludge outlet, and the conditioning sludge inlet is connected with the conditioning sludge outlet;
a drying unit comprising:
the drying device is provided with a dehydrated sludge inlet, a dried sludge outlet, a dried hot air inlet and a dried cold air outlet, and the dehydrated sludge inlet is connected with the dehydrated sludge outlet;
the buffer tank is provided with a dry cold air inlet, an air distribution outlet, an air return outlet and a tail air outlet, and the dry cold air inlet is connected with the dry cold air outlet;
a pyrolysis unit comprising:
the inner cylinder body is internally provided with a rotating shaft along the length direction, shoveling plates which are distributed in a staggered manner are arranged on the outer wall of the rotating shaft at intervals, the inner cylinder body is provided with a dry sludge inlet, a mixed organic solid waste inlet, a pyrolysis oil gas outlet and a solid material outlet, and the dry sludge inlet is connected with the dry sludge outlet;
the outer cylinder body is sleeved on the inner cylinder body, a heating space is formed between the outer cylinder body and the inner cylinder body, the outer cylinder body is provided with a dry distillation hot air inlet and a dry distillation cold air outlet, and the dry distillation cold air outlet is connected with the dry hot air inlet after being air-distributed with the air distribution outlet;
the cyclone separator is provided with a pyrolysis oil gas inlet, a solid particle outlet and a purified pyrolysis oil gas outlet, and the pyrolysis oil gas inlet is connected with the pyrolysis oil gas outlet;
the combustor is provided with a primary air inlet, a secondary air inlet, a natural gas inlet, a purification pyrolysis oil gas inlet and a hot flue gas outlet, the secondary air inlet is connected with the return air outlet, the hot flue gas outlet is connected with the dry distillation hot air outlet, and the purification pyrolysis oil gas inlet is connected with the purification pyrolysis oil gas outlet.
2. The system of claim 1, wherein the combustor comprises:
the burner shell is provided with heat storage ceramics and a heat insulation layer from inside to outside, the secondary air inlet and the hot flue gas outlet are arranged on the burner shell, and the hot flue gas outlet is far away from the secondary air inlet;
the combustion chamber is embedded into the combustor shell from the combustor shell, one end of the combustion chamber extending into the combustor shell is provided with an opening, the primary air inlet is arranged on the combustion chamber, and the opening of the combustion chamber is far away from the secondary air inlet;
the purification pyrolysis oil gas pipeline extends into the combustion chamber and is away from the opening of the combustion chamber, and the purification pyrolysis oil gas inlet is communicated with the purification pyrolysis oil gas pipeline;
a natural gas line extending into the combustion chamber and spaced from the opening of the combustion chamber, the natural gas inlet communicating with the natural gas line.
3. The system of claim 1 or 2, further comprising:
a water-cooled screw conveyor, the water-cooled screw conveyor comprising:
the water-cooling inner cylinder body is internally provided with a spiral rotating shaft along the length direction thereof, the water-cooling inner cylinder body is provided with a solid material inlet and a water-cooling solid material outlet, and the solid material inlet is connected with the solid material outlet;
the water-cooling outer cylinder body is sleeved on the water-cooling inner cylinder body, a water-cooling space is formed between the water-cooling outer cylinder body and the water-cooling inner cylinder body, and the water-cooling outer cylinder body is provided with a cooling water inlet and a heat exchange water outlet;
the screening device is provided with a water-cooling solid material inlet, a pyrolytic carbon outlet and a solid waste outlet, wherein the water-cooling solid material inlet is connected with the water-cooling solid material outlet.
4. The system of claim 1, further comprising:
the device comprises a blending organic solid waste bin, wherein the blending organic solid waste bin is connected with a blending organic solid waste inlet through a spiral conveyer, the spiral conveyer is installed in the inclined upward direction, and a blank section is arranged at the tail end of the spiral conveyer.
5. The system of claim 1, further comprising:
the alkaline washing tower is provided with a tail gas inlet and an alkaline washing tail gas outlet, and the tail gas inlet is connected with the tail gas outlet;
the active carbon filter is provided with an alkali washing tail gas inlet and a tail gas outlet which reaches the standard after filtration, and the alkali washing tail gas inlet is connected with the alkali washing tail gas inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020307799.XU CN212051065U (en) | 2020-03-12 | 2020-03-12 | Mobile system for treating sludge in villages and towns |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020307799.XU CN212051065U (en) | 2020-03-12 | 2020-03-12 | Mobile system for treating sludge in villages and towns |
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| CN212051065U true CN212051065U (en) | 2020-12-01 |
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| CN202020307799.XU Expired - Fee Related CN212051065U (en) | 2020-03-12 | 2020-03-12 | Mobile system for treating sludge in villages and towns |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111253033A (en) * | 2020-03-12 | 2020-06-09 | 北京云水浩瑞环境科技有限公司 | System and method for mobile treatment of sludge in villages and towns |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111253033A (en) * | 2020-03-12 | 2020-06-09 | 北京云水浩瑞环境科技有限公司 | System and method for mobile treatment of sludge in villages and towns |
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