CN203820613U - Flue-gas waste heat sludge drying incineration system - Google Patents
Flue-gas waste heat sludge drying incineration system Download PDFInfo
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- CN203820613U CN203820613U CN201320638296.0U CN201320638296U CN203820613U CN 203820613 U CN203820613 U CN 203820613U CN 201320638296 U CN201320638296 U CN 201320638296U CN 203820613 U CN203820613 U CN 203820613U
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Abstract
The utility model relates to a flue-gas waste heat sludge drying incineration system. The front section of a boiler waste flue gas pipeline is communicated with a sludge drying fan; the sludge drying fan is communicated with a dryer loading wet sludge and provides dried flue gas to the dryer; a drying stirring device is arranged at the bottom of the dryer; an inlet of the dryer is connected with a sludge feed device, and an outlet is connected with a multi-pipe dust collector; a gas outlet of the dust collector is combined with the rear section of the boiler waste flue gas pipeline and communicated with a boiler dust removal system; a solid outlet of the dust collector is connected with the boiler hearth through a conveying device; and the drying fan, the dryer, the drying stirring device and the dust collector are electrically connected with an automatic control system. According to the system provided by the utility model, the treatment system and process for drying sludge by use of the waste heat of flue gas conform to 'reduction, harmlessness, stabilization and resource utilization' of sludge; and by adopting a method of 'waste treatment by waste', all related resources are comprehensive utilized.
Description
Technical field
The utility model belongs to sewage sludge harmlessness processing technology field, a kind of drying sludge of the pollutant emissions such as the particularly mummification of high water content sludge, burning, waste gas of incineration utilization and flue gas, the zero-discharge treatment system of burning integral.
Background technology
The materials such as the throw out, particulate matter and the floating matter that produce after wastewater treatment, are referred to as mud; The main method of the current sludge disposal of landfill or China, along with sludge quantity constantly increases, take over the land for use more and more difficult, the reduction of simple soil is processed and can not be satisfied the demand, and mud contains large amount of organic, abundant nitrogen, phosphorus and heavy metal substance, the very high multiple hazardous and noxious substances of water ratio in addition, can not directly make fertilizer or soil improvement agent, process and can produce again new environmental problem with soil reduction, can cause source quality to worsen, the environmental hazards such as contaminated soil and farm crop.Therefore, the important topic that has been processed into environment protection and the requisite measure of mud, and also treatment technology will reach reducing sludge volume, stabilization and innoxious.
Burning is the means that maximize decrement in sludge disposal process.After burning, sludge volume after the relative mechanical dehydration of sludge volume, reduces the amount up to 90%; And after general sludge drying, there is certain calorific value, therefore can ensure the carrying out of burning.Compared with other methods of disposal, 1) burn the volume and weight that has reduced greatly mud, finally need material to be processed little; 2) sludge treatment speed is fast, does not need standing storage, is particularly suitable for centrally disposing on a large scale sludge from wastewater treatment plant; 3) mud can on-site incineration, does not need long-distance transportation, effectively prevents the secondary pollution that mud transportation may cause environment; 4) can reclaim heat, for generating and heat supply.
Therefore, develop a kind of integrated artistic, can realize and utilize dewatered sludge to burn a part of heat energy of generation as the mummification thermal source of initial mud, realize the desiccation burning integral of mud, reduction system operation comprehensive cost, and make the flue gas pollutant of sludge incineration generation reach zero release, be the problem that present society earnestly need to solve.
Summary of the invention
Main purpose of the present utility model is not enough in order to solve described in above-mentioned background, and a kind for the treatment of system that can effectively utilize fume afterheat mud to be carried out to drying and incinerating is provided.
The utility model is achieved through the following technical solutions:
A kind of fume afterheat sludge drying and incinerating system, it is characterized in that: waste flue gas of boilers pipeline leading portion is connected with drying sludge blower fan, drying sludge blower fan is communicated with and provides dry flue gas to described drying machine with the drying machine that loads wet mud, described drying machine bottom is provided with dry whipping appts, described drying machine entrance connects sludge feeding device, outlet connects multitube dust-precipitator, the pneumatic outlet of dust-precipitator is incorporated to waste flue gas of boilers pipeline back segment, be communicated to boiler dust removal system, the solid outlet of dust-precipitator by e Foerderanlage together with boiler furnace, described drying air fan, drying machine, dry whipping appts, dust-precipitator electrical connection automation control system.
Preferably, described drying machine is the spiral-flow dryer that adopts the convection drying formula that flue gas class is drying source.
Preferably, described sludge feeding device is duplex charging machine or hollowly stirs feeding device etc.
The treatment process of this fume afterheat sludge drying and incinerating comprises following step:
1). the useless flue gas of boiler emission drying blower fan before dedusting, tangentially send in SPIN SPOUTED DRYER.
2). wet mud to be dried is through duplex charging machine or hollowly the handling equipment such as stir and send in drying machine; clash into the hot flue gas of the high daybreak high speed rotating tangentially entering; make it micronize and be fierce spouted fluidized state, the wet mud more greatly, gluing is dried while carries out Mechanical Crushing by the dry whipping appts that is arranged on kiln bottom.
3). the mud granule that reaches certain mass dryness fraction is taken out of outside kiln by air-flow, enter dust-precipitator, carry out gas solid separation, leave the flue gas of dust-precipitator, enter waste flue gas of boilers pipeline, be mixed and deliver to boiler dust removal system with waste flue gas of boilers, the dewatered sludge being captured down, send into boiler secondary air port together with coal at stove chamber inner combustion.
Employing spiral-flow dryer of the present utility model, has the following advantages:
1. good leak tightness.In drying process, do not increase oxygen level, almost identical with stack gas oxygen level (approximately 6%), has eliminated the possibility of mud detonation in drying process.And traditional cylinder drying machine airtight performance of walking around is poor, easily leaking-in air, increases oxygen level, for containing certain calorific value and having the drying sludge that fugitive constituent is higher, has increased the possibility of detonation.
2. be difficult for sticky wall.The airstream drying tower body wall mask of high speed rotating has strong souring, reduce the possibility of the sticky wall of mud, and stirring blade is triangular shaped, while no matter being forward or reversion, drying medium and mud are all subject to reactive force upwards, can be at low-speed running, reduce the centrifugal force of mud to inwall, stirring blade top becomes cutting knife-edge shape, and the mud that makes to be bonded on a small quantity on tower wall comes off under shear action.
3. be the air compartment that inverted cone shape has tangential admission mouth, make mud in drying process, measure fierce swirl spouting state, rate of drying is high, and the mud of and high moisture content large for viscosity can not stop up tower body yet, can once the direct convection drying of wet mud of moisture 70-85% be become to the dewatered sludge of moisture 10-40%.Process system is simple, with high content of technology.
4. at the bottom of air compartment is designed to " W " shape, can make to be dried operation continuously and stably under low-resistance condition, enclose guide functions outward, reduce the resistance of air-flow; Inner ring has changed the sectional area of main tower different heights, make the wind speed in main tower higher more downwards, avoid not dry large wet mud to sink to bottom surface and block air intake environment, because native system nucleus equipment SPIN SPOUTED DRYER volume is little, system is comparatively simple, therefore overall volume is less, thereby minimizing system is in the corresponding minimizing of civil engineering, building initial cost, the convenience of installation and maintenance simultaneously.Another because the volume of drying plant is little, heat radiation and leakage thermosteresis also reduce relatively, and heat utilization efficiency is high.
The utility model utilizes the treatment system of stack gas waste heat sludge-drying and technique to be one and follows mud " minimizing, innoxious, stabilization, resource utilization " treatment system and technique, and the method for employing " treatment of wastes with processes of wastes against one another ", make every related resource obtain comprehensive utilization.
Brief description of the drawings
Fig. 1 is structure and the schema schematic diagram of fume afterheat sludge drying and incinerating service system treatment process described in the utility model.
Embodiment
Below in conjunction with Figure of description, the utility model is further described.
As shown in Figure 1, waste flue gas of boilers pipeline leading portion is connected with drying sludge blower fan, drying sludge blower fan is communicated with and provides dry flue gas to drying machine with the drying machine that loads wet mud, drying machine bottom is provided with dry whipping appts, drying machine entrance connects sludge feeding device, outlet connects multitube dust-precipitator, the pneumatic outlet of dust-precipitator is incorporated to waste flue gas of boilers pipeline back segment, be communicated to boiler dust removal system, the solid outlet of dust-precipitator is by e Foerderanlage together with boiler furnace, and drying air fan, drying machine, dry whipping appts, dust-precipitator are electrically connected automation control system.
Wherein, drying machine parameter is as follows:
Wherein, sludge feeding device is selected duplex charging machine or is hollowly stirred feeding device etc.
Specific works mode, is described below in conjunction with said system: the useless flue gas of boiler emission drying blower fan before dedusting, tangentially send in SPIN SPOUTED DRYER.
Because flue gas is to draw before dedusting, very high in dust contained flue gas, therefore drying air fan is required to have good wearability mass-energy.Wet mud to be dried is through duplex charging machine or hollowly the handling equipment such as stir and send in drying machine; clash into the hot flue gas of the high daybreak high speed rotating tangentially entering; make it micronize and be fierce spouted fluidized state, the wet mud more greatly, gluing is dried while carries out Mechanical Crushing by the dry whipping appts that is arranged on kiln bottom.In the mud granule of fluidized state, due to the heat and mass transfer coefficient having increased between specific surface area and gas-solid, the moisture in wet mud evaporates rapidly, and mud is dried.
Kiln bottom adopts spouted bed technique, has improved the gas speed of kiln bottom, blocks room blast inlet in case larger mud granule sinks to bottom.The mud granule that reaches certain mass dryness fraction is taken out of outside kiln by air-flow, enter dust-precipitator, carry out gas solid separation, leave the flue gas of dust-precipitator, enter waste flue gas of boilers pipeline, be mixed and deliver to boiler dust removal system with waste flue gas of boilers, the dewatered sludge being captured down, send into boiler secondary air port together with coal at stove chamber inner combustion.
In specific works, the parameter of its drying process control: temperature, pressure, dry stir current and drying air fan in kiln.
Regulative mode: the rotating speed of main conditioning of mud charging machine.
Claims (3)
1. a fume afterheat sludge drying and incinerating system, it is characterized in that: waste flue gas of boilers pipeline leading portion is connected with drying sludge blower fan, drying sludge blower fan is communicated with and provides dry flue gas to described drying machine with the drying machine that loads wet mud, described drying machine bottom is provided with dry whipping appts, described drying machine entrance connects sludge feeding device, outlet connects multitube dust-precipitator, the pneumatic outlet of dust-precipitator is incorporated to waste flue gas of boilers pipeline back segment, be communicated to boiler dust removal system, the solid outlet of dust-precipitator by e Foerderanlage together with boiler furnace, described drying air fan, drying machine, dry whipping appts, dust-precipitator electrical connection automation control system.
2. fume afterheat sludge drying and incinerating system according to claim 1, is characterized in that: described drying machine is the spiral-flow dryer that adopts the convection drying formula that flue gas class is drying source.
3. fume afterheat sludge drying and incinerating system according to claim 1, is characterized in that: described sludge feeding device is duplex charging machine or hollowly stirs feeding device etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320638296.0U CN203820613U (en) | 2013-10-16 | 2013-10-16 | Flue-gas waste heat sludge drying incineration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320638296.0U CN203820613U (en) | 2013-10-16 | 2013-10-16 | Flue-gas waste heat sludge drying incineration system |
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| CN203820613U true CN203820613U (en) | 2014-09-10 |
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| CN201320638296.0U Expired - Fee Related CN203820613U (en) | 2013-10-16 | 2013-10-16 | Flue-gas waste heat sludge drying incineration system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109433787A (en) * | 2018-10-26 | 2019-03-08 | 武汉天源环保股份有限公司 | A kind of method of resource utilization after kitchen garbage deep dehydration |
| CN110550844A (en) * | 2019-08-20 | 2019-12-10 | 四川大学 | Domestic sewage's processing system |
| CN111116010A (en) * | 2020-01-09 | 2020-05-08 | 马鞍山钢铁股份有限公司 | Steel mill sludge treatment system and utilization method |
| CN111533424A (en) * | 2020-04-23 | 2020-08-14 | 马鞍山钢铁股份有限公司 | Acid-base sludge harmless treatment system and treatment method |
| CN117466516A (en) * | 2023-11-24 | 2024-01-30 | 河北长润环保科技有限公司 | Sludge drying coupling combustion system and process thereof |
-
2013
- 2013-10-16 CN CN201320638296.0U patent/CN203820613U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109433787A (en) * | 2018-10-26 | 2019-03-08 | 武汉天源环保股份有限公司 | A kind of method of resource utilization after kitchen garbage deep dehydration |
| CN110550844A (en) * | 2019-08-20 | 2019-12-10 | 四川大学 | Domestic sewage's processing system |
| CN111116010A (en) * | 2020-01-09 | 2020-05-08 | 马鞍山钢铁股份有限公司 | Steel mill sludge treatment system and utilization method |
| CN111533424A (en) * | 2020-04-23 | 2020-08-14 | 马鞍山钢铁股份有限公司 | Acid-base sludge harmless treatment system and treatment method |
| CN117466516A (en) * | 2023-11-24 | 2024-01-30 | 河北长润环保科技有限公司 | Sludge drying coupling combustion system and process thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20181016 |
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| CF01 | Termination of patent right due to non-payment of annual fee |