CN104692603A - Integral treatment system for sludge - Google Patents
Integral treatment system for sludge Download PDFInfo
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- CN104692603A CN104692603A CN201510088944.3A CN201510088944A CN104692603A CN 104692603 A CN104692603 A CN 104692603A CN 201510088944 A CN201510088944 A CN 201510088944A CN 104692603 A CN104692603 A CN 104692603A
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Abstract
The invention discloses an integral treatment system for sludge. The system comprises a wet sludge bin, a wet sludge conveying unit, a conditioning tank, a cleaning tank, a sludge filter press, a dehydrated sludge conveying unit, a sludge drying machine, a low-temperature separator, a cooling and pressure reducing device, a spraying tower, a belt conveyor, a front bin, a sludge incineration boiler, a dust remover, a desulfurizing tower and a chimney. The system has the beneficial effects that the input required by thermal drying of sludge can be effectively reduced, and the problems of drying, incineration and coking of sludge and pollutant emission can be solved well.
Description
Technical field:
The present invention relates to and be a kind ofly applicable to municipal administration, the deep dehydration of industrial sludge and the Integrated Processing System of desiccation burning integral technology.
Background technology:
At present, up to ten thousand, whole nation municipal sewage plant is in operation, and sewage discharge situation has had very large change.But along with the operation of sewage work, another contradiction manifests gradually, the secondary product of sewage disposal---mud pollution on the environment is just becoming large public hazards: because moisture percentage in sewage sludge is about 80%, be in liquid state and give out strong smell containing a large amount of bacterium and heavy metal, this makes municipal sludge be very difficult to process, bacterium wherein and the smell sent can cause severe contamination to environment, if dealt with improperly, the heavy metal in mud also can severe contamination underground water.
Deeply dehydrating sludge technology is a kind of completing wet deeply dehydrating sludge under low cost prerequisite and the technology of safety and stability of mud after ensureing process, by the polynary modified and mechanism filter-pressing squeezing of mud dosing by sludge dewatering to required water ratio.This technology is owing to must add for one's water breaks decline and the stabilization that chemical substance (lime, flocculation agent, highly basic etc.) realizes water ratio, but due to increment, cause follow-up disposal limited and run counter to the principle of recycling economy to wracking of sludge shale, started to move towards to wither away.Additive increases butt, and lime or flocculation agent cause increment serious; Lime or acid-base method produce new oxious component affects landfill percolate pH value; In additive, to cause burning facility fume emission to be difficult to up to standard for iron trichloride; Any one interpolation all causes realizing safe Land_use change; In recycle mud organic calorific value and fertility limited.It can thus be appreciated that: being used alone this technique means is the resource utilization being unfavorable for realizing specific resistance to filtration.
Sludge heat drying technology is that one can reach minimizing, stabilization, resource utilization three aspect requirement simultaneously.This technology adopts custom-designed indirect type desiccation machine, is heated, evaporate the process of wherein Nei Shui and outer water by the saturation steam release latent heat of vaporization to mud.The condensation later of the saturation steam release latent heat of vaporization enters boiler feed water system and recycles.The water vapour be evaporated, volatile matter leave drying equipment together with carrier gas, first enter cyclonic separator and isolate particulate matter in waste gas, enter spray column washing to be subsequently condensed into waste water and to enter sewage network, waste gas can not be coagulated and then enter boiler draft system and enter boiler as First air and burn.This Technology Restriction, in high cost, high running cost and thermal source, is only applicable to big-and-middle-sized specific resistance to filtration enterprise.
Sludge incineration technology is a kind of technological line that can realize the thorough decrement of mud under the condition of safety and stability.The main component of mud comprises undegradable organism and microorganism in sewage treatment process, has certain calorific value.Different according to the calorific value of semi-oriented mud (about 40% water ratio), the auxiliary fuel of coal firing boiler, garbage fired boiler can be used as, or adopt pure burning sludge boiler to carry out self-sustaining burning.The high-temperature flue gas that sludge incineration produces produces water vapor as heat source, and generally flue gas carries out qualified discharge after dedusting, desulfurization after flowing through superheater, economizer, air preheater heat exchange successively.
Existing deeply dehydrating sludge and the relatively independent existence of sludge anhydration burning technique, there is the problem of high pollution in the process disposal technology of deep dehydration+burning; The treatment process subject matter of sludge heat drying+burning is the problem such as high energy consumption, high investment; Specific resistance to filtration is made to exist less economical or environmental pollution is serious.
Summary of the invention:
The object of the invention is to the deficiency overcoming existing deeply dehydrating sludge high pollution, sludge anhydration burning technology high energy consumption, high investment, the integrated treatment system of a kind of deeply dehydrating sludge and anhydration and incineration is provided.
Technical solution of the present invention is:
A kind of mud Integrated Processing System, comprises wet sludge bin 1, wet mud supply unit 2, conditioner 3, cleaning pond 4, sludge filter press 5, dewatered sludge supply unit 6, sludge drying machine 7, low-temperature separator 8, temperature-decreased pressure reducer 9, spray column 10, rotary conveyor 11, stokehold feed bin 12, sludge incinerating boiler 13, fly-ash separator 14, thionizer 15, chimney 16; It is characterized in that: sludge drying machine 7 comprises groomed oar rachis 17, cylindrical shell 18, chuck 28, top cover 19, sludge drying machine 7 top is also provided with wet sludge inlet 20, mummification waste gas outlet 21, and bottom is provided with urgent drain hole 22, discharge port 23; The collection vapour header 29 that chuck 28 sidewall is provided with inlet pipe 24 and is weldingly connected with inlet pipe 24, bottom is provided with condensation-water drain 25; Groomed oar rachis 17 one end arranges condensation-water drain 27 in steam source import 26 and axle; Sludge incinerating boiler 13 comprises high-temperature separator 35, material-returning device 36, empty flue 37, preposition air preheater 38, superheater 39, economizer 40, air preheater 41, burner hearth 43, membrane wall 47, drum 48; The exit of burner hearth 43 is provided with high-temperature separator 35, high-temperature separator 35 exit is provided with sky flue 37, the surrounding of burner hearth 43 is provided with membrane wall 47, the bottom of burner hearth 43 is provided with air distribution plate 31, blast cap 32, slag-drip opening 33, be provided with mud material inlet 42, coal feeding hole 30 in the middle part of burner hearth 43, burner hearth 43 top is provided with exhanst gas outlet 34.
In mud Integrated Processing System, outside the cylindrical shell 18 in sludge drying machine 7, be provided with N number of independently chuck 28, wherein, 3≤N≤8; Each independently chuck 28 connects an inlet pipe 24, and connects same collection vapour header 29 by inlet pipe 24;
In mud Integrated Processing System, the emulsion zone 44 in the burner hearth 43 of sludge incinerating boiler adopts insulated design, and freeboard of fluidized bed 45 adopts Design on thermal insulation; Arrange preposition air preheater 38 before superheater 39, overfiren air port 46 points three layers layout, burner hearth 43 lower disposed one deck, middle part is arranged two-layer.
The step of mud Integrated Processing System disposing sludge comprises:
(1), the wet mud of water ratio about 80% enters conditioner 3 through wet mud supply unit 2, sludge filter press 5 filter-press dehydration is entered after adding medicine conditioning, mud average moisture content about 65% after dehydration, delivers to sludge drying machine 7 by dewatered sludge supply unit 6;
(2), dewatered sludge is entered by the wet sludge inlet 20 at sludge drying machine 7 top, the saturation steam of 0.5MPa is divided into two-way to enter chuck 28 and groomed oar rachis 17 inner chamber of sludge drying machine 7 respectively, groomed oar rachis 17 and cylindrical shell 18 are heated simultaneously, in the mode of conduction heating, drying and other treatment is carried out to mud, by the rotation of groomed oar rachis 17, mud is overturn, stir, and constantly update warming interface, fully contact with cylindrical shell 18 with the groomed oar rachis 17 after heating, thus the moisture of mud is evaporated in a large number, mud is carried to discharge port 23 with the rotation of groomed oar rachis 17 simultaneously, final drying is even, the mud of water ratio about 40% is expelled in stokehold feed bin 12 by discharge port 23, for follow-up burning disposal,
The whole drying process of mud carries out in the closed state, organic volatile gas with foreign flavor, dust and water vapor introduce low-temperature separator 8 under closed environment, be separated the dust that in waste gas, diameter is greater than 15 microns, the dust of Separation and Recovery delivers to stokehold feed bin 12, waste gas after dedusting enters spray column 10 and carries out final dusting and condensation, directly introduce sludge incinerating boiler 13 through final dusting and condensed 80 degrees Celsius of non-condensable gass to use as First air, thus avoid the pollution to environment;
(3), dewatered sludge delivers to sludge incinerating boiler 13 by stokehold feed bin 12, burner hearth 43 is evenly blown into by material seeding wind, mud burns the membrane wall 47 partial heat being passed to burner hearth 43 surrounding in burner hearth 43, membrane wall 47 internal recycle water introduces drum 48 by the saturation steam of thermogenesis 274 degrees Celsius, after in drum 48, carbonated drink is separated, saturation steam introduces superheater 39, be heated the superheated vapour of generation 485 degrees Celsius, 5.38MPa, and superheated vapour is adjusted to the saturation steam of the 0.5MPa needed for sludge drying machine 7 through temperature-decreased pressure reducer 9; The water of condensation that saturation steam release of heat in sludge drying machine 7 generates 130 degrees Celsius directly feeds water as sludge incinerator 13 and enters economizer 40, membrane wall 47 successively by thermal evaporation;
The high-temperature flue gas of 850-900 degree Celsius that sludge incineration produces is discharged from the exhanst gas outlet 34 of burner hearth, first through high-temperature separator 35 fine material be separated further and collect, turn back to burner hearth 43 by material-returning device 36 and continue circulating combustion, subsequently from top to bottom by empty flue 37 Thorough combustion of afterbody, centrifugation when flue gas is turned by the empty flue 37 of U-shaped, isolate coarse particles ash in flue gas, reduce back-end surfaces dust stratification and wearing and tearing, the air needed for sludge incineration is heated again through preposition air preheater 38, improve a secondary air temperature, the stable burning of useful maintenance burner hearth, subsequently successively by superheater 39, economizer 40, air preheater 41 heating medium, final flue gas is through fly-ash separator 14, thionizer 15, chimney 16 qualified discharge.
Beneficial effect of the present invention:
Mud Integrated Processing System effectively can reduce the input required for sludge heat drying, solves a difficult problem for sludge drying, burning, coking and pollutant emission preferably.
Accompanying drawing illustrates:
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the process flow sheet of the embodiment of the present invention;
Fig. 2 is sludge drying machine structural representation;
Fig. 3 is the left view of Fig. 2.
Fig. 4 is sludge incinerating boiler structural representation.
Embodiment:
As shown in drawings, a kind of mud Integrated Processing System, comprises wet sludge bin 1, wet mud supply unit 2, conditioner 3, cleaning pond 4, sludge filter press 5, dewatered sludge supply unit 6, sludge drying machine 7, low-temperature separator 8, temperature-decreased pressure reducer 9, spray column 10, rotary conveyor 11, stokehold feed bin 12, sludge incinerating boiler 13, fly-ash separator 14, thionizer 15, chimney 16; It is characterized in that: sludge drying machine 7 comprises groomed oar rachis 17, cylindrical shell 18, chuck 28, top cover 19, sludge drying machine 7 top is also provided with wet sludge inlet 20, mummification waste gas outlet 21, and bottom is provided with urgent drain hole 22, discharge port 23; The collection vapour header 29 that chuck 28 sidewall is provided with inlet pipe 24 and is weldingly connected with inlet pipe 24, bottom is provided with condensation-water drain 25; Groomed oar rachis 17 one end arranges condensation-water drain 27 in steam source import 26 and axle; Sludge incinerating boiler 13 comprises high-temperature separator 35, material-returning device 36, empty flue 37, preposition air preheater 38, superheater 39, economizer 40, air preheater 41, burner hearth 43, membrane wall 47, drum 48; The exit of burner hearth 43 is provided with high-temperature separator 35, high-temperature separator 35 exit is provided with sky flue 37, the surrounding of burner hearth 43 is provided with membrane wall 47, the bottom of burner hearth 43 is provided with air distribution plate 31, blast cap 32, slag-drip opening 33, be provided with mud material inlet 42, coal feeding hole 30 in the middle part of burner hearth 43, burner hearth 43 top is provided with exhanst gas outlet 34.
In mud Integrated Processing System, outside the cylindrical shell 18 in sludge drying machine 7, be provided with N number of independently chuck 28, wherein, 3≤N≤8; Each independently chuck 28 connects an inlet pipe 24, and connects same collection vapour header 29 by inlet pipe 24;
In mud Integrated Processing System, the emulsion zone 44 in the burner hearth 43 of sludge incinerating boiler adopts insulated design, and freeboard of fluidized bed 45 adopts Design on thermal insulation; Arrange preposition air preheater 38 before superheater 39, overfiren air port 46 points three layers layout, burner hearth 43 lower disposed one deck, middle part is arranged two-layer.
Embodiment recited above is only be described the preferred embodiment of the present invention; not the spirit and scope of the present invention are limited; under the prerequisite not departing from design concept of the present invention; the various modification that in this area, common engineering technical personnel make technical scheme of the present invention and improvement; protection scope of the present invention all should be fallen into; the technology contents of request protection of the present invention, all records in detail in the claims.
Claims (4)
1. a mud Integrated Processing System, comprises wet sludge bin (1), wet mud supply unit (2), conditioner (3), cleaning pond (4), sludge filter press (5), dewatered sludge supply unit (6), sludge drying machine (7), low-temperature separator (8), temperature-decreased pressure reducer (9), spray column (10), rotary conveyor (11), stokehold feed bin (12), sludge incinerating boiler (13), fly-ash separator (14), thionizer (15), chimney (16); It is characterized in that: sludge drying machine (7) comprises groomed oar rachis (17), cylindrical shell (18), chuck (28), top cover (19), sludge drying machine (7) top is also provided with wet sludge inlet (20), mummification waste gas outlet (21), mummification waste gas outlet (21) connects low-temperature separator (8), spray column (10) successively, and sludge drying machine (7) bottom is also provided with urgent drain hole (22), discharge port (23); The collection vapour header (29) that chuck (28) sidewall is provided with inlet pipe (24) and is weldingly connected with inlet pipe (24), bottom is provided with condensation-water drain (25); Groomed oar rachis (17) one end arranges condensation-water drain (27) in steam source import (26) and axle; Sludge incinerating boiler (13) comprises high-temperature separator (35), material-returning device (36), empty flue (37), preposition air preheater (38), superheater (39), economizer (40), air preheater (41), burner hearth (43), membrane wall (47), drum (48); The exit of burner hearth (43) is provided with high-temperature separator (35), high-temperature separator (35) exit is provided with sky flue (37), burner hearth (43) surrounding is provided with membrane wall (47), burner hearth (43) bottom is provided with air distribution plate (31), blast cap (32), slag-drip opening (33), burner hearth (43) middle part is provided with mud material inlet (42), coal feeding hole (30), and burner hearth (43) top is provided with exhanst gas outlet (34).
2. mud Integrated Processing System according to claim 1, is characterized in that: be provided with N number of independently chuck (28) outside the cylindrical shell (18) in sludge drying machine (7), wherein, and 3≤N≤8; Each independently chuck (28) connects an inlet pipe (24), and connects same collection vapour header (29) by inlet pipe (24).
3. mud Integrated Processing System according to claim 1, is characterized in that: the emulsion zone (44) in the burner hearth (43) of sludge incinerating boiler adopts insulated design, and freeboard of fluidized bed (45) adopt Design on thermal insulation; Superheater (39) is front arranges preposition air preheater (38); Overfiren air port (46) point three layers of layout, burner hearth (43) lower disposed one deck, middle part is arranged two-layer.
4. a mud for mud Integrated Processing System as claimed in claim 1, its treatment step comprises:
(1), the wet mud of water ratio about 80% enters conditioner (3) through wet mud supply unit (2), sludge filter press (5) filter-press dehydration is entered after adding medicine conditioning, mud average moisture content about 65% after dehydration, delivers to sludge drying machine (7) by dewatered sludge supply unit (6);
(2), dewatered sludge is entered by the wet sludge inlet (20) at sludge drying machine (7) top, the saturation steam of 0.5MPa is divided into two-way to enter chuck (28) and groomed oar rachis (17) inner chamber of sludge drying machine (7) respectively, groomed oar rachis (17) and cylindrical shell (18) are heated simultaneously, in the mode of conduction heating, drying and other treatment is carried out to mud, by the rotation of groomed oar rachis (17), mud is overturn, stir, and constantly update warming interface, fully contact with cylindrical shell (18) with the groomed oar rachis (17) after heating, thus the moisture of mud is evaporated in a large number, mud is carried to discharge port (23) with the rotation of groomed oar rachis (17) simultaneously, final drying is even, the mud of water ratio about 40% is expelled in stokehold feed bin (12) by discharge port (23), for follow-up burning disposal,
The whole drying process of mud carries out in the closed state, organic volatile gas with foreign flavor, dust and water vapor introduce low-temperature separator (8) under closed environment, be separated the dust that in waste gas, diameter is greater than 15 microns, the dust of Separation and Recovery delivers to stokehold feed bin (12), waste gas after dedusting enters spray column (10) and carries out final dusting and condensation, directly introduce sludge incinerating boiler (13) through final dusting and condensed 80 degrees Celsius of non-condensable gass to use as First air, thus avoid the pollution to environment;
(3), dewatered sludge delivers to sludge incinerating boiler (13) by stokehold feed bin (12), burner hearth (43) is evenly blown into by material seeding wind, mud burns the membrane wall (47) partial heat being passed to burner hearth (43) surrounding in burner hearth (43), membrane wall (47) internal recycle water introduces drum (48) by the saturation steam of thermogenesis 274 degrees Celsius, after the interior carbonated drink of drum (48) is separated, saturation steam introduces superheater (39), to be heated generation 485 degrees Celsius, 5.38MPa superheated vapour, superheated vapour is adjusted to the saturation steam of the 0.5MPa needed for sludge drying machine (7) through temperature-decreased pressure reducer (9), the water of condensation that saturation steam release of heat in sludge drying machine (7) generates 130 degrees Celsius directly enters economizer (40) successively as sludge incinerator (13) feedwater, membrane wall (47) is by thermal evaporation,
The high-temperature flue gas of 850-900 degree Celsius that sludge incineration produces is discharged from the exhanst gas outlet (34) of burner hearth, first through high-temperature separator (35) fine material be separated further and collect, turn back to burner hearth (43) by material-returning device (36) and continue circulating combustion, subsequently from top to bottom by empty flue (37) Thorough combustion of afterbody, centrifugation when flue gas is turned by the empty flue (37) of U-shaped, isolate coarse particles ash in flue gas, reduce back-end surfaces dust stratification and wearing and tearing, again through the air needed for preposition air preheater (38) heating sludge incineration, improve a secondary air temperature, the stable burning of useful maintenance burner hearth, subsequently successively by superheater (39), economizer (40), air preheater (41) heating medium, final flue gas is through fly-ash separator (14), thionizer (15), chimney (16) qualified discharge.
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| CN201510088944.3A CN104692603A (en) | 2015-02-27 | 2015-02-27 | Integral treatment system for sludge |
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| CN201510088944.3A CN104692603A (en) | 2015-02-27 | 2015-02-27 | Integral treatment system for sludge |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106957139A (en) * | 2017-05-05 | 2017-07-18 | 北京纬纶华业环保科技股份有限公司 | A kind of low-temperature sludge drying treatment system |
| CN107504492A (en) * | 2017-09-25 | 2017-12-22 | 安徽马钢工程技术集团有限公司 | A kind of industrial sludge, waste emulsified mixture slag and metallurgical grey joint processing system and its electrification technique |
| CN107726329A (en) * | 2017-10-08 | 2018-02-23 | 梁金秀 | Magnetic tape trailer heat utilization and the sinusoidal pulley type waste water processing unit of roots blower |
| CN107860006A (en) * | 2017-10-08 | 2018-03-30 | 吉首大学 | Sinusoidal pulley type municipal wastewater refuse disposal installation with dragveyer |
| CN108675603A (en) * | 2018-05-22 | 2018-10-19 | 河北省冀信环保科技有限公司 | A kind of sewage treatment plants sewage sludge harmlessness processing unit and processing method |
| CN108954277A (en) * | 2018-08-06 | 2018-12-07 | 西安热工研究院有限公司 | One kind is with ball mill pulverized coal preparation system and utilizes flue gas dewatered sludge coupled electricity-generation system |
| CN112125492A (en) * | 2020-10-26 | 2020-12-25 | 杭州富阳伟文环保科技有限公司 | Chemical sludge treatment method |
| CN113860695A (en) * | 2021-10-27 | 2021-12-31 | 北京新风航天装备有限公司 | Harmless treatment method for oil stain solid waste |
| CN114671590A (en) * | 2022-03-15 | 2022-06-28 | 安徽世绿环保科技有限公司 | Sludge drying treatment process for municipal sewage plant |
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2015
- 2015-02-27 CN CN201510088944.3A patent/CN104692603A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106957139A (en) * | 2017-05-05 | 2017-07-18 | 北京纬纶华业环保科技股份有限公司 | A kind of low-temperature sludge drying treatment system |
| CN107504492A (en) * | 2017-09-25 | 2017-12-22 | 安徽马钢工程技术集团有限公司 | A kind of industrial sludge, waste emulsified mixture slag and metallurgical grey joint processing system and its electrification technique |
| CN107504492B (en) * | 2017-09-25 | 2023-06-27 | 马钢集团设计研究院有限责任公司 | Industrial sludge, waste emulsion residue and metallurgical ash combined treatment system and power generation process thereof |
| CN107726329A (en) * | 2017-10-08 | 2018-02-23 | 梁金秀 | Magnetic tape trailer heat utilization and the sinusoidal pulley type waste water processing unit of roots blower |
| CN107860006A (en) * | 2017-10-08 | 2018-03-30 | 吉首大学 | Sinusoidal pulley type municipal wastewater refuse disposal installation with dragveyer |
| CN108675603A (en) * | 2018-05-22 | 2018-10-19 | 河北省冀信环保科技有限公司 | A kind of sewage treatment plants sewage sludge harmlessness processing unit and processing method |
| CN108954277A (en) * | 2018-08-06 | 2018-12-07 | 西安热工研究院有限公司 | One kind is with ball mill pulverized coal preparation system and utilizes flue gas dewatered sludge coupled electricity-generation system |
| CN112125492A (en) * | 2020-10-26 | 2020-12-25 | 杭州富阳伟文环保科技有限公司 | Chemical sludge treatment method |
| CN113860695A (en) * | 2021-10-27 | 2021-12-31 | 北京新风航天装备有限公司 | Harmless treatment method for oil stain solid waste |
| CN114671590A (en) * | 2022-03-15 | 2022-06-28 | 安徽世绿环保科技有限公司 | Sludge drying treatment process for municipal sewage plant |
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