CN212051076U - System for utilize steam waste heat mummification mud and granulation incineration disposal - Google Patents
System for utilize steam waste heat mummification mud and granulation incineration disposal Download PDFInfo
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- CN212051076U CN212051076U CN201922361018.5U CN201922361018U CN212051076U CN 212051076 U CN212051076 U CN 212051076U CN 201922361018 U CN201922361018 U CN 201922361018U CN 212051076 U CN212051076 U CN 212051076U
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Abstract
A system for drying sludge by using steam waste heat and performing granulation incineration treatment comprises a wet sludge storage bin, a disc dryer, a dry sludge scraper, a dry sludge storage bin, a granulation feeding device, a granulation device, a sludge conveying device, a steam extraction device, a dust removal device and a household garbage incineration system; wherein: the discharge port of the wet sludge storage bin is connected with a disc drier; the disc drier is provided with a steam inlet; the disc drier is communicated with the dry sludge scraper conveyor; the discharge opening of the dry sludge scraper conveyor is connected with a dry sludge storage bin; the dry sludge storage bin is communicated with a granulation feeding device; the granulating and feeding device is communicated with the granulating device; the outlet of the granulating device is connected with a sludge conveying device; a branch of the sludge conveying device is sequentially connected with the steam extraction device and the dust removal device; and the main path of the sludge conveying device enters a household garbage incineration system together with granulated sludge and household garbage through a granulator to be incinerated. The utility model discloses realize minimizing, stabilization and innoxious, good environmental benefit and economic benefits of mud.
Description
Technical Field
The utility model belongs to the sludge treatment field, concretely relates to utilize system of steam waste heat mummification mud and granulation incineration disposal.
Background
In recent years, with the continuous enhancement of sewage treatment in China and the continuous increase of the scale of urban sewage treatment, as a byproduct of the sewage treatment process, sludge gradually draws attention of people due to unique physicochemical properties and environmental hazards, and the sludge treatment problem becomes one of important problems to be solved urgently in the field of environmental pollution treatment
The sludge treatment methods widely adopted at present are mainly divided into three methods, namely composting treatment, landfill treatment and incineration treatment. The composting treatment has small construction investment and low operation cost, but has large occupied area, odor discharge and great influence of environmental factors on the composting process, so the composting treatment is not widely used. The sanitary landfill operation is simple, the cost is low, but the method can occupy a large amount of land resources, and leachate pollution and other problems can be generated after the landfill. In contrast, the sludge treated by high-temperature incineration can effectively kill various pathogens in the sludge, the volume reduction can be realized to the maximum extent by incineration, and the heat can be recovered by using the heat exchange device to supply heat and generate electricity, so that the maximum reduction, harmlessness and recycling of the sludge can be realized. In order to ensure the granularity of sludge dried and fed into a waste incinerator grate, not only the sludge particles are fully combusted in the waste incinerator grate, but also slag leakage and elutriation generated by fine particles after sludge drying are reduced, a mode of drying sludge granulation and then burning is adopted.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome the not enough in the current collaborative incineration technique, provide a system for utilize steam waste heat mummification mud and granulation incineration disposal. For solving the technical problem, the utility model discloses carry out the granulation to the mud after the mummification, with granulation mud in coordination with domestic waste incineration, realize burning behind the dry sludge granulation can effectual control dust. The granulated sludge can reduce dust entering a garbage pit operation area and an incineration boiler to the maximum extent, reduce the carrying amount of fly ash particles in flue gas, greatly reduce the degree of deposited dust and coking, inhibit or reduce coking, and effectively reduce the hazard of the influence through the granulation of the powdery dried sludge. The utility model discloses with reduction, stabilization and the innoxious of realizing mud, reach energy saving and emission reduction and circular economy's purpose, produce good environmental benefit and economic benefits.
In order to achieve the purpose, the utility model is realized by the following technical proposal:
a system for drying sludge by using steam waste heat and carrying out granulation incineration treatment utilizes low-pressure extracted steam of a steam turbine generator unit of a household garbage incineration power generation system as a heat source to carry out super-disc indirect drying treatment on sludge with the water content of about 80%; after the sludge after drying treatment is treated by a granulation system, the sludge is incinerated with domestic garbage to generate power: the odor and the waste water generated in the sludge drying process and the smoke and the ash generated in the sludge burning process are jointly treated by the waste water, the waste gas and the waste residue pollution prevention and control facility of the household garbage burning power generation system.
The utility model discloses a concrete technical scheme is: a system for drying sludge by using steam waste heat and performing granulation incineration treatment comprises a wet sludge storage bin 1, a disc drier 3, a dry sludge scraper conveyor 4, a dry sludge storage bin 5, a granulation feeding device 6, a granulation device 7, a sludge conveying device 8, a steam extraction device 9, a dust removal device 10 and a household garbage incineration system 13; wherein:
the discharge port of the wet sludge storage bin 1 is connected with a disc drier 3;
the disc drier 3 is provided with an inlet of steam 2;
the disc drier 3 is communicated with a dry sludge scraper 4;
the discharge opening of the dry sludge scraper conveyor 4 is connected with a dry sludge storage bin 5;
the dry sludge storage bin 5 is communicated with a granulation feeding device 6;
the granulation feeding device 6 is communicated with the granulation device 7;
the outlet of the granulating device 7 is connected with a sludge conveying device 8;
a branch of the sludge conveying device 8 is sequentially connected with a steam extraction device 9 and a dust removal device 10;
the main path of the sludge conveying device 8 enters a household garbage incineration system 13 to be incinerated together with the granulated sludge 11 and the household garbage 12 through a granulator.
Further, granulation feed arrangement includes scraper blade lifting machine, linear vibrating screen, buffer storage storehouse, electronic push-pull valve.
Further, the granulating device adopts a ring mould granulator, a bucket elevator and a spiral conveying belt are used for conveying the dried sludge to the granulating device, the dried sludge is granulated, and odor at the upper section of the granulating device directly enters the garbage pit. Granulation feed arrangement is connected in order with dry sludge storage storehouse, and the granulation device discharge gate is connected with sludge conveying system, carries granulation sludge to domestic waste incineration system, burns the processing with domestic waste in coordination. Wherein the sludge conveying system is connected with a steam extraction system and a dust removal system in sequence.
Further, the discharge hole of the scraper lifter is connected with the feed inlet of the linear vibrating screen, and the linear vibrating screen mainly aims to separate large-particle impurities, small iron blocks and the like mixed in sludge from the sludge. Through the outflow of rectilinear shale shaker sludge dry powder from the lower part, the storehouse is stored to the granule that can directly get into from rectilinear shale shaker downstream outflow after the large granule screening. After the sludge dry powder is screened by the linear vibrating screen, the fine powder enters the buffering bin, and the buffering bin mainly plays a role in uniformly granulating and feeding and temporarily storing materials when a granulating device fails.
Further, discharging the granulated sludge onto a truck and conveying the sludge to a dry sludge bin in a garbage pit; sludge feeding: the two-petal sludge grab bucket grabs sludge to a feeding port of the grate and then enters the furnace for incineration, and the sludge basically keeps the mixed combustion amount of 2 grab bucket garbage and 1 grab bucket sludge.
Further, because of when the granulator operation granulation, the granulator has some raise dust to produce, has the raise dust to produce when the material advances the surge bin in addition, and is clean and tidy for workshop environment, so need set up one set of dust pelletizing system, and the system contains tuber pipe, valve, dust remover, fan, and the dust remover export can be with the dust removal deodorization system pipeline in tuber pipe access mummification workshop through the fan.
The dried sludge granulation process mainly comprises the following steps: granulation feed system, granulation system, mud granule are carried and are cooled, dust pelletizing system, returning charge system. The granulation feeding system mainly comprises a scraper lifter, a linear vibrating screen, a buffer bin and an electric gate valve. The scraper lifter is an opening near the outlet end of the scraper lifter at the outlet of the original sludge drier, an electric gate valve is arranged and connected with the feed inlet of the scraper lifter, the discharge outlet of the scraper lifter is connected with the feed inlet of the linear vibrating screen, and when the electric gate valve is opened, dry sludge powder enters the scraper lifter. The linear vibrating screen is characterized in that sludge dry powder flows out from the lower part through the linear vibrating screen, and large particles can directly enter the particle storage bin after being screened and flow out from the downstream of the linear vibrating screen. The surge bin mainly plays a role in uniformly feeding granulation materials and temporarily storing the materials when the granulation equipment fails. And the sludge granulation system is connected to the granulation feeding system and is used for granulating the dried sludge.
The sludge particle conveying and cooling mainly comprises a closed discharge belt conveyor (mainly for preventing granulated sludge particles from being broken in the conveying process), a cooler and a feeding closed belt conveyor thereof (the granulated sludge has high temperature and can generate steam in the conveying process to corrode conveying equipment and the like).
And sending waste gas and waste water generated in the sludge drying process into a waste incineration system for cooperative treatment. And the material returning system sends the powdery sludge which is not formed under the dust remover into a lifter of the granulating and feeding system for re-granulation.
Further, the material that the mummification machine came out has the uniform temperature can have vapor simultaneously, and the material of granulator export also has uniform temperature and vapor, and vapor meets cold can condense out water and come, and in order to avoid flowing water problem to appear everywhere in the equipment, set up the steam extraction mouth on scraper blade lifting machine, granulator, granule transport scraper blade machine, get into in the dust removal deodorization system in mummification workshop.
The utility model discloses utilize steam waste heat mummification mud and granulation incineration disposal device's processing method, the steam that utilizes the msw incineration system to produce carries out indirect mummification to wet mud, and the dry mud of production is carried to the granulation system, and the granulation mud of production is sent into msw incineration hopper and rubbish along with feed system and is dealt with in coordination. The sludge drying machine adopts a super-disc steam indirect drying process, the dry sludge conveying and storing system adopts full-closed mechanical conveying, the dry sludge feeding system adopts a two-section sludge grab bucket to realize sludge feeding, the granulating system adopts a ring die granulator, and the household garbage incineration system is connected to the sludge drying granulating system and is used for incinerating the granulated sludge in cooperation with the household garbage.
The utility model has the beneficial technical effects that:
1, the utility model dries the sludge by the heat of saturated steam generated by burning the household garbage, and reduces the water content to about 20 percent, thereby achieving the purpose of sludge reduction; the dried sludge is granulated and then is burnt, and the emission index of the flue gas is SO2The reduction is obvious, and the lime usage is reduced. The harm of dry sludge containing a large amount of dust to the original garbage incineration system in the incineration treatment process is reduced. The waste incineration power plant is also provided with a flue gas purification and sewage treatment system, and the sludge is subjected to collaborative incineration treatment to reduce the sewageEquipment investment and transportation costs for sludge treatment. The fly ash content in the smoke can be increased by the cooperation of the dried sludge and the household garbage incineration, the flow resistance of the smoke is increased, the dust is more easily retained, vicious circle is generated, and finally a large amount of high-density and high-hardness coking is formed;
2, the dry sludge is poured into a garbage storage pit, and a large amount of dust can be generated when the garbage crane grabs, so that the sight of operators of the garbage crane is blocked; the flying dust falls on the garbage crane and accessory equipment for deliquescence, so that the equipment such as a steel wire rope and the like is corroded, and the electric control instrument equipment is short-circuited, so that the faults are frequent; the dried sludge is basically free of dust in the garbage pit after granulation; the problem of blockage of a filter screen and a percolate grating at a primary air suction opening is basically solved;
3, the utility model adopts a totally closed system to reduce the secondary pollution of sludge odor;
4, the decoking amount is reduced, the probability of blowing out is reduced, and the service life of the system and the steam amount are increased.
Drawings
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings, wherein:
FIG. 1 is a schematic view of a system for sludge drying and granulation incineration treatment by using steam waste heat according to the present invention.
In the figure: 1-wet sludge storage bin, 2-steam, 3-disc drier, 4-dry sludge scraper, 5-dry sludge storage bin, 6-granulation feeding device, 7-granulation device, 8-sludge conveying device, 9-steam extraction device, 10-dust removal device, 11-granulation sludge, 12-household garbage and 13-household garbage incineration system.
Detailed Description
Examples of the invention will be described in detail below with reference to the accompanying drawings:
as shown in fig. 1, a system for drying sludge by using steam waste heat and performing granulation incineration treatment comprises a wet sludge storage bin 1, a disc dryer 3, a dry sludge scraper conveyor 4, a dry sludge storage bin 5, a granulation feeding device 6, a granulation device 7, a sludge conveying device 8, a steam extraction device 9, a dust removal device 10, granulated sludge 11, household garbage 12 and a household garbage incineration system 13; wherein:
the discharge port of the wet sludge storage bin 1 is connected with a disc drier 3;
the disc drier 3 is provided with an inlet of steam 2;
the disc drier 3 is communicated with a dry sludge scraper 4;
the discharge opening of the dry sludge scraper conveyor 4 is connected with a dry sludge storage bin 5;
the dry sludge storage bin 5 is communicated with a granulation feeding device 6;
the granulation feeding device 6 is communicated with the granulation device 7;
the outlet of the granulating device 7 is connected with a sludge conveying device 8,
A branch of the sludge conveying device 8 is sequentially connected with a steam extraction device 9 and a dust removal device 10;
the main path of the sludge conveying device 8 is used for granulating the sludge 11 through a granulator and enters a household garbage incineration system 13 together with the household garbage 12 for incineration.
The specific working implementation process is as follows:
sludge with the water content of 80% is unloaded into a wet sludge storage bin 1 by a sludge truck, steam 2 generated by a garbage incineration system is used for carrying out indirect heat exchange drying on the wet sludge by a super-disc drying machine 3, so that the water content of the sludge is reduced to 20%, and the dried sludge is conveyed to a dry sludge storage bin 5 by a dry sludge scraper 4.
The dried sludge enters a granulation system 7 through a granulation feeding system 6, and then the granulated sludge 11 is conveyed to a household garbage incineration system 13 through a sludge conveying system 8 and is incinerated in cooperation with household garbage 12. And a steam extraction system 9 and a dust removal system 10 are arranged in the process of the sludge conveying system. The material that the mummification machine came out has the uniform temperature can have vapor simultaneously, and the material of granulator export also has uniform temperature and vapor, and vapor meets cold can condense out water and come, and in order to avoid appearing in the equipment flowing water problem everywhere, set up the extraction steam mouth on scraper blade lifting machine, granulator, granule transport scraper blade machine, gaseous after the extraction steam send into the dust pelletizing system in mummification workshop under the draught fan effect in, gaseous by the deodorization fan send into the msw incineration system after the dust removal.
The equipment manufacturer of the ring die granulator is Shandong Yulong, model XGJ-560, processing capacity of 2t/h and power of 132 KW/machine. Feeding materials from the upper part of the granulator and discharging materials from the lower part of the granulator. The optimal granulating water content for granulating the dried sludge is 25-35%, the particle forming diameter is 5-8mm, the length is 30-50mm, and the sludge blending ratio is 5-7%.
Compared with the prior art, the granulated sludge of the utility model can reduce the dust entering the garbage pit operation area and the incineration boiler to the maximum extent; the carrying amount of fly ash particles in the flue gas is reduced, the degree of deposited ash and coking is greatly reduced, the coking is inhibited or reduced, and the service life of the system and the steam amount are increased while the decoking amount is reduced. A totally closed system is adopted, so that the secondary pollution of sludge odor is reduced; the harm of the influence can be effectively reduced by granulating the powdery dried sludge, and the emission of SO2 in the flue gas can be obviously reduced. The utility model discloses with reduction, stabilization and the innoxious of realizing mud, reach energy saving and emission reduction and circular economy's purpose, have good environmental benefit and economic benefits.
Claims (1)
1. A system for drying sludge by using steam waste heat and carrying out granulation incineration treatment is characterized by comprising a wet sludge storage bin (1), a disc drying machine (3), a dry sludge scraper conveyor (4), a dry sludge storage bin (5), a granulation feeding device (6), a granulation device (7), a sludge conveying device (8), a steam extraction device (9), a dust removal device (10) and a household garbage incineration system (13); wherein:
the discharge opening of the wet sludge storage bin (1) is connected with a disc drier (3);
a steam (2) inlet is arranged on the disc drier (3);
the disc drier (3) is communicated with a dry sludge scraper (4);
the discharge opening of the dry sludge scraper conveyor (4) is connected with a dry sludge storage bin (5);
the dry sludge storage bin (5) is communicated with a granulation feeding device (6);
the granulating feeding device (6) is communicated with the granulating device (7);
the outlet of the granulating device (7) is connected with a sludge conveying device (8);
a branch of the sludge conveying device (8) is sequentially connected with a steam extraction device (9) and a dust removal device (10);
the main path of the sludge conveying device (8) enters a household garbage incineration system (13) to be incinerated together with granulated sludge (11) and household garbage (12) through a granulator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922361018.5U CN212051076U (en) | 2019-12-22 | 2019-12-22 | System for utilize steam waste heat mummification mud and granulation incineration disposal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117628510A (en) * | 2023-11-20 | 2024-03-01 | 无锡中维环境科技有限公司 | Process for cooperatively incinerating wet sludge and garbage after drying by heat source |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117628510A (en) * | 2023-11-20 | 2024-03-01 | 无锡中维环境科技有限公司 | Process for cooperatively incinerating wet sludge and garbage after drying by heat source |
| CN117628510B (en) * | 2023-11-20 | 2024-06-28 | 无锡中维环境科技有限公司 | Process for cooperatively incinerating wet sludge and garbage after drying by heat source |
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