CN212741231U - Municipal sludge and garden waste cooperative recycling treatment system - Google Patents
Municipal sludge and garden waste cooperative recycling treatment system Download PDFInfo
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- CN212741231U CN212741231U CN202021188806.5U CN202021188806U CN212741231U CN 212741231 U CN212741231 U CN 212741231U CN 202021188806 U CN202021188806 U CN 202021188806U CN 212741231 U CN212741231 U CN 212741231U
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Abstract
The utility model discloses a municipal sludge and garden waste cooperative recycling treatment system, which comprises a material mixing unit, a biomass gasification unit and a drying and destructive distillation unit, wherein the material mixing unit comprises a garden waste crusher, a municipal sludge filter press and a mixing bin which is respectively connected with the crusher and the filter press; the biomass gasification unit comprises a gasification furnace, a combustion chamber and a boiler which are sequentially connected, the gasification furnace is connected with the garden waste crusher, and a steam outlet is arranged on the boiler; the drying and destructive distillation unit comprises a steam dryer, a destructive distillation unit and a discharge bin which are sequentially connected, wherein the steam dryer is provided with a feed inlet, a steam inlet and a discharge outlet, the feed inlet is connected with the mixing bin, the steam inlet is connected with a steam outlet of the boiler, and the discharge outlet is connected with the destructive distillation unit. The utility model discloses combine biomass gasification unit and mummification dry distillation unit, municipal sludge and gardens discarded object are dealt with in coordination with the resourceful, and the internal energy circulation is realized to system operation process, is showing and reduces the energy consumption.
Description
Technical Field
The utility model belongs to the technical field of the solid waste treatment technique and specifically relates to a municipal administration mud and gardens discarded object are resourceful processing system in coordination.
Background
Along with the implementation of a large number of construction and upgrading projects of sewage treatment plants in China, the yield of municipal sludge is continuously increased, and the sludge contains a large number of microorganisms, parasitic ova, harmful heavy metals and refractory substances, and also contains a large number of trace elements, organic matters and the like, so that the problem of recycling the municipal sludge is always concerned. The preparation of biomass charcoal by sludge dry distillation is one of the recycling treatment technologies, microorganisms can be killed by high-temperature pyrolysis under an anaerobic condition, heavy metals are solidified, and the biomass charcoal is formed and used as a soil conditioner. For example, the Chinese patent literature discloses a method for carbonizing sludge by dry distillation, which has the publication number of CN106277661B, and comprises the following steps: the method comprises the following steps of sludge receiving, sludge modification, sludge dehydration and drying, solid gas separation, sludge drying and powdering, carbonization treatment, waste gas treatment and waste liquid treatment. However, the ash content of the sludge biomass charcoal is high, which is not beneficial to soil improvement and the like, and in addition, the sludge dry distillation needs a large amount of external energy, which results in high disposal cost.
On the other hand, as the urban greening area is continuously enlarged, the yield of garden wastes such as branches and leaves is continuously increased, and how to effectively consume the garden wastes becomes another important problem in urban development. The traditional treatment mode is mainly landfill or incineration, which is easy to cause secondary pollution and waste of biological resources. The resource utilization modes of garden wastes such as incineration power generation, anaerobic fermentation, biomass gasification and the like have the problems of low utilization rate, difficult treatment of secondary pollution and the like.
Disclosure of Invention
The utility model aims to overcome the defects that in the prior art, a large amount of external energy is needed in the process of resource utilization of municipal sludge, and the disposal cost is high; the municipal sludge and garden waste cooperative recycling treatment system is provided, a biomass gasification unit of the garden waste is organically combined with a drying and destructive distillation unit of the municipal sludge, and the municipal sludge and the garden waste are subjected to cooperative recycling treatment, so that the comprehensive treatment of the municipal organic waste is realized, the internal energy circulation is realized in the operation process of the system, and the energy consumption is obviously reduced; and the biomass charcoal of the system product has higher added value, and can be used for soil improvement and restoration, adsorbent preparation, matrix raw materials for nursery cultivation and the like.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a municipal sludge and garden waste cooperative recycling treatment system comprises a material mixing unit, a biomass gasification unit and a drying and destructive distillation unit, wherein the material mixing unit comprises a garden waste crusher, a municipal sludge filter press and a mixing bin which is respectively connected with the garden waste crusher and the municipal sludge filter press through pipelines; the biomass gasification unit comprises a gasification furnace, a combustion chamber and a boiler which are sequentially connected through a pipeline, the gasification furnace is connected with the garden waste crusher through a pipeline, and a steam outlet is formed in the boiler; the mummification dry distillation unit is including looping through tube coupling's steam drying machine, dry distillation unit and play feed bin, be equipped with feed inlet, steam inlet and discharge gate on the steam drying machine, the feed inlet passes through tube coupling with the blending bunker, steam inlet passes through tube coupling with the steam outlet of boiler, the discharge gate is connected with the dry distillation unit.
Use the utility model provides a when municipal sludge and gardens discarded object are handled to system, gardens discarded object after the drying gets into the gardens discarded object breaker and breaks into gardens discarded object disintegrating slag, and partly gardens discarded object disintegrating slag gets into the compounding bunker and gets into mummification dry distillation system after mixing with the municipal sludge after the preliminary dehydration of pressure filter, and the mummification that produces living beings charcoal after the mummification of steam drying machine is handled and the dry distillation of dry distillation unit is handled gets into out the feed bin and stores. Utilize the gardens discarded object to mediate municipal sludge, can reduce the mud moisture content, reduce the energy consumption of mummification process to can reduce the ash content of carbonization back biomass charcoal, be favorable to the follow-up utilization of biomass charcoal, heavy metal is fixed by the melting in the biomass charcoal who obtains, and microorganism, worm's ovum etc. in the mud are killed, and contain a large amount of microelement, can regard as polluting soil restoration medicament raw materials, adsorption material, gardens vegetation culture medium etc..
Meanwhile, the other part of garden waste slag enters a biomass gasification unit, biomass combustible gas generated by a gasification furnace is supplied to a combustion chamber for combustion, the biomass energy generated by combustion is used for heating the steam in a boiler, and the saturated steam generated by the boiler is supplied to a steam dryer in a drying and dry distillation unit so as to dry municipal sludge, so that the external energy supply of the system is greatly reduced, and the treatment cost is reduced; the biomass charcoal produced in the gasification furnace can be subsequently utilized together with the biomass charcoal produced in the drying and dry distillation system, and has higher added value.
Therefore, the utility model organically combines the biomass gasification unit and the drying and destructive distillation unit, realizes the cooperative resource treatment of municipal sludge and garden waste, realizes internal energy circulation in the system operation process, and obviously reduces the treatment energy consumption; and the biomass charcoal of the system product has higher added value, can be used for soil improvement and remediation, adsorbent preparation, nursery culture substrate raw materials and the like, realizes harmless, quantitative reduction and resource treatment of municipal sludge and garden waste, and provides a new path for comprehensive treatment and utilization of urban organic waste.
Preferably, a lifting machine is arranged on a pipeline between the garden waste crusher and the gasification furnace, and a lifting pump is arranged on a pipeline between the garden waste crusher and the mixing bin. The garden waste crushed slag crushed by the crusher smoothly enters the gasification furnace and the mixing bin through the elevator and the elevator pump, and biomass gasification and drying dry distillation are respectively carried out.
Preferably, a first dust remover which is respectively connected with the gasification furnace and the combustion chamber through pipelines is arranged between the gasification furnace and the combustion chamber, and the gasification furnace and the combustion chamber are respectively connected with an induced draft fan. After the biomass gas generated by the gasification furnace is subjected to dust removal treatment by the first dust remover, the combustion efficiency in the combustion chamber can be improved, so that the energy utilization rate of the system is improved, and the energy consumption of the system is reduced.
Preferably, a flue gas outlet is formed in the boiler, the biomass gasification unit further comprises a second dust remover, and the second dust remover is connected with the flue gas outlet of the boiler through a pipeline. The flue gas generated by the boiler is discharged after dust removal, so that the secondary pollution to the environment is reduced.
Preferably, a material temporary storage bin is arranged between the steam dryer and the dry distillation unit, and the material temporary storage bin is respectively connected with a discharge port of the steam dryer and the dry distillation unit. The sludge dried by the steam dryer is transferred by the material temporary storage bin and then enters the dry distillation unit for dry distillation, so that the amount of the sludge entering the dry distillation unit can be effectively controlled, and the treatment stability of the system is improved.
Preferably, the dry distillation unit comprises a heating furnace and a dry distillation kettle arranged in the heating furnace, an external combustion chamber is formed between the heating furnace and the dry distillation kettle, a feed inlet of the dry distillation kettle is connected with the material temporary storage bin through a pipeline, a discharge outlet of the dry distillation kettle is connected with the discharge bin through a pipeline, and spiral pumps are respectively arranged on the pipelines between the dry distillation kettle and the steam dryer and between the dry distillation kettle and the discharge bin.
Preferably, the drying and destructive distillation unit further comprises a combustible gas separation device, the heating furnace is provided with a mixed flue gas discharge port and a combustible gas circulation inlet, the inlet of the combustible gas separation device is connected with the mixed flue gas discharge port of the heating furnace through a pipeline, and the outlet of the combustible gas separation device is connected with the combustible gas circulation inlet of the heating furnace through a pipeline. The mixed flue gas generated after dry distillation is converted into combustible gas and dry distillation liquid through the combustible gas separation device, and the combustible gas reenters the dry distillation unit to serve as supplementary fuel, so that the overall energy consumption of the system can be reduced.
Preferably, a cooler and an oil-water separator connected with the cooler are arranged on a pipeline between the dry distillation unit and the discharge bin. After tar generated by the dry distillation unit passes through the oil-water separator, the separated tar can uniformly enter the combustion chamber for secondary combustion, so that the discharge amount of pollutants is reduced.
Preferably, the temperature in the heating furnace is 500 to 800 ℃. After high-temperature dry distillation treatment, heavy metals in the sludge can be fused and fixed, microorganisms, worm eggs and the like are killed, and the available value of the obtained biomass charcoal is improved.
Therefore, the utility model discloses following beneficial effect has:
(1) municipal sludge is blended by garden waste and then is dried and distilled, so that the water content of the sludge and the ash content of biochar after distillation are reduced, and the subsequent utilization of the biochar is facilitated;
(2) the biomass energy generated by the biomass gasification unit supplies energy to the steam dryer of the drying and carbonization unit, so that the external energy supply of the system is greatly reduced, and the treatment cost is reduced;
(3) the biomass charcoal produced by the gasification furnace and the drying and destructive distillation system has higher added value, can be used for soil improvement and restoration, adsorbent preparation, nursery culture substrate raw materials and the like, and realizes the harmlessness, reduction and resource cooperative treatment of municipal sludge and garden waste.
Drawings
Fig. 1 is a schematic view of a connection structure of the present invention.
In the figure: 1 garden waste crusher, 2 municipal sludge filter press, 3 blending bunker, 4 gasification furnace, 5 combustion chamber, 6 boiler, 601 steam outlet, 602 smoke outlet, 7 steam dryer, 701 feed inlet, 702 steam inlet, 703 discharge gate, 8 dry distillation unit, 801 heating furnace, 802 dry distillation kettle, 803 mixed smoke discharge port, 804 combustible gas circulation inlet, 9 discharge bunker, 10 elevator, 11 lift pump, 12 first dust remover, 13 draught fan, 14 second dust remover, 15 material temporary storage bunker, 16 screw pump, 17 combustible gas separator, 18 cooler, 19 oil-water separator.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
Example (b):
a municipal sludge and garden waste cooperative recycling treatment system comprises a material mixing unit, a biomass gasification unit and a drying and destructive distillation unit.
The material mixing unit comprises a garden waste crusher 1, a municipal sludge filter press 2 and a mixing bunker 3 which is respectively connected with the garden waste crusher and the municipal sludge filter press through pipelines, and a lifting pump 11 is arranged on the pipeline between the garden waste crusher and the mixing bunker.
The biomass gasification unit comprises a gasification furnace 4, a first dust remover 12, a combustion chamber 5, a boiler 6 and a second dust remover 14 which are connected in sequence through pipelines; the gasification furnace is connected with the garden waste crusher through a pipeline, a lifting machine 10 is arranged on the pipeline between the garden waste crusher and the gasification furnace, and the gasification furnace and the combustion chamber are respectively connected with a draught fan 13; the boiler is provided with a steam outlet 601 and a flue gas outlet 602, and the flue gas outlet is connected with the second dust remover through a pipeline.
The drying and destructive distillation unit comprises a steam dryer 7, a material temporary storage bin 15, a destructive distillation unit 8, a discharge bin 9 and a combustible gas separation device 17 which are connected with the destructive distillation unit in sequence through pipelines; the steam dryer is provided with a feed inlet 701, a steam inlet 702 and a discharge outlet 703, the feed inlet is connected with the mixing bin through a pipeline, the steam inlet is connected with a steam outlet of the boiler through a pipeline, and the discharge outlet is connected with the material temporary storage bin; the dry distillation unit comprises a heating furnace 801 and a dry distillation kettle 802 arranged in the heating furnace, an external combustion chamber is formed between the heating furnace and the dry distillation kettle, and the temperature in the heating furnace is 700 ℃; the feed inlet of the dry distillation kettle is connected with the material temporary storage bin through a pipeline, the discharge outlet of the dry distillation kettle is connected with the discharge bin through a pipeline, and spiral pumps 16 are respectively arranged on the pipelines between the dry distillation kettle and the steam dryer and between the dry distillation kettle and the discharge bin; the heating furnace is provided with a mixed flue gas discharge port 803 and a combustible gas circulation inlet 804, the inlet of the combustible gas separation device is connected with the mixed flue gas discharge port of the heating furnace through a pipeline, and the outlet of the combustible gas separation device is connected with the combustible gas circulation inlet of the heating furnace through a pipeline; a cooler 18 and an oil-water separator 19 connected with the cooler are arranged on a pipeline between the dry distillation unit and the discharge bin.
When the system in the utility model is used for processing municipal sludge and garden waste, the garden waste after drying enters the garden waste crusher to be crushed into garden waste crushed slag, a part of garden waste crushed slag enters the mixing bin under the action of the lifting pump and is mixed with municipal sludge after preliminary dehydration through the filter press to enter the drying and carbonization system, the mixed sludge after drying treatment of the steam drier enters the temporary material storage bin for temporary storage, then enters the carbonization unit under the action of the screw pump to be subjected to high-temperature carbonization treatment, the mixed flue gas generated after carbonization is converted into combustible gas and carbonization liquid through the combustible gas separation device, and the combustible gas enters the carbonization unit again to serve as supplementary fuel; after tar generated by the dry distillation unit is cooled by the cooler and passes through the oil-water separator, the separated tar can uniformly enter the combustion chamber for secondary combustion, so that the discharge amount of pollutants is reduced; the biomass charcoal generated after the dry distillation treatment enters a discharge bin under the action of a spiral pump for storage, and can be used as a raw material of a contaminated soil remediation medicament, an adsorption material, a garden vegetation culture medium and the like.
Meanwhile, the other part of garden waste crushed slag crushed by the garden waste crusher enters the biomass gasification unit under the action of the lifter, biomass combustible gas is generated by the gasification furnace, the biomass combustible gas is dedusted by the first deduster and then supplied to the combustion chamber for combustion, steam in the boiler is heated by biomass energy generated by combustion, and saturated steam generated by the boiler is supplied to a steam dryer in the drying and carbonization unit to dry the mixed sludge in the mixing bin, so that external energy supply of the system is greatly reduced, and the treatment cost is reduced; the biomass charcoal produced in the gasification furnace can be subsequently utilized together with the biomass charcoal produced in the drying and dry distillation system, and has higher added value.
The utility model organically combines the biomass gasification unit and the drying and destructive distillation unit, realizes the cooperative resource treatment of municipal sludge and garden waste, realizes internal energy circulation in the system operation process, and obviously reduces the treatment energy consumption; and the biomass charcoal of the system product has higher added value, can be used for soil improvement and remediation, adsorbent preparation, nursery culture substrate raw materials and the like, realizes harmless, quantitative reduction and resource treatment of municipal sludge and garden waste, and provides a new path for comprehensive treatment and utilization of urban organic waste.
Claims (9)
1. A municipal sludge and garden waste cooperative recycling treatment system is characterized by comprising a material mixing unit, a biomass gasification unit and a drying and destructive distillation unit, wherein the material mixing unit comprises a garden waste crusher (1), a municipal sludge filter press (2) and a mixing bin (3) which is respectively connected with the garden waste crusher and the municipal sludge filter press through pipelines; the biomass gasification unit comprises a gasification furnace (4), a combustion chamber (5) and a boiler (6) which are sequentially connected through a pipeline, the gasification furnace is connected with the garden waste crusher through a pipeline, and a steam outlet (601) is formed in the boiler; the drying and dry distillation unit comprises a steam dryer (7), a dry distillation unit (8) and a discharge bin (9) which are sequentially connected through a pipeline, wherein a feed inlet (701), a steam inlet (702) and a discharge outlet (703) are formed in the steam dryer, the feed inlet is connected with the mixing bin through a pipeline, the steam inlet is connected with a steam outlet of a boiler through a pipeline, and the discharge outlet is connected with the dry distillation unit.
2. The cooperative municipal sludge and garden waste recycling system according to claim 1, wherein a lifting machine (10) is provided on the pipeline between the garden waste crusher and the gasification furnace, and a lifting pump (11) is provided on the pipeline between the garden waste crusher and the blending bin.
3. The municipal sludge and garden waste cooperative recycling treatment system according to claim 1 or 2, wherein a first dust collector (12) connected with the gasification furnace and the combustion chamber through pipelines is arranged between the gasification furnace and the combustion chamber, and the gasification furnace and the combustion chamber are connected with an induced draft fan (13) respectively.
4. The municipal sludge and garden waste cooperative recycling treatment system according to claim 1 or 2, wherein the boiler is provided with a flue gas outlet (602), the biomass gasification unit further comprises a second dust collector (14), and the second dust collector is connected with the flue gas outlet of the boiler through a pipeline.
5. The municipal sludge and garden waste cooperative recycling treatment system according to claim 1, wherein a material temporary storage bin (15) is arranged between the steam dryer and the dry distillation unit, and the material temporary storage bin is respectively connected with a discharge port of the steam dryer and the dry distillation unit.
6. The municipal sludge and garden waste cooperative recycling treatment system according to claim 5, wherein the dry distillation unit comprises a heating furnace (801) and a dry distillation kettle (802) arranged in the heating furnace, an external combustion chamber is formed between the heating furnace and the dry distillation kettle, a feed inlet of the dry distillation kettle is connected with the material temporary storage bin through a pipeline, a discharge outlet of the dry distillation kettle is connected with the discharge bin through a pipeline, and spiral pumps (16) are respectively arranged on the pipelines between the dry distillation kettle and the steam dryer and between the dry distillation kettle and the discharge bin.
7. The municipal sludge and garden waste cooperative recycling treatment system according to claim 6, wherein the drying and dry distillation unit further comprises a combustible gas separation device (17), the heating furnace is provided with a mixed flue gas discharge port (803) and a combustible gas circulation inlet (804), the inlet of the combustible gas separation device is connected with the mixed flue gas discharge port of the heating furnace through a pipeline, and the outlet of the combustible gas separation device is connected with the combustible gas circulation inlet of the heating furnace through a pipeline.
8. The municipal sludge and garden waste cooperative recycling treatment system according to claim 6, wherein a cooler (18) and an oil-water separator (19) connected with the cooler are arranged on a pipeline between the dry distillation unit and the discharge bin.
9. The cooperative recycling treatment system for municipal sludge and garden waste according to claim 6, wherein the temperature in the heating furnace is 500-800 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021188806.5U CN212741231U (en) | 2020-06-23 | 2020-06-23 | Municipal sludge and garden waste cooperative recycling treatment system |
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| CN202021188806.5U CN212741231U (en) | 2020-06-23 | 2020-06-23 | Municipal sludge and garden waste cooperative recycling treatment system |
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| CN212741231U true CN212741231U (en) | 2021-03-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114477709A (en) * | 2022-02-25 | 2022-05-13 | 江苏碧诺环保科技有限公司 | Heavy metal sludge carbonization system not prone to blockage |
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- 2020-06-23 CN CN202021188806.5U patent/CN212741231U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114477709A (en) * | 2022-02-25 | 2022-05-13 | 江苏碧诺环保科技有限公司 | Heavy metal sludge carbonization system not prone to blockage |
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