CN204233965U - Gas cleaning after a kind of sludge incineration and equipment for reclaiming - Google Patents

Gas cleaning after a kind of sludge incineration and equipment for reclaiming Download PDF

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Publication number
CN204233965U
CN204233965U CN201420639856.9U CN201420639856U CN204233965U CN 204233965 U CN204233965 U CN 204233965U CN 201420639856 U CN201420639856 U CN 201420639856U CN 204233965 U CN204233965 U CN 204233965U
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ejector
water
heat
air blast
draws
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CN201420639856.9U
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韩全
张恒
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Guangdong Yeanovo Environmental Protection Co., Ltd.
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GUANGZHOU ENUO ENVIRONMENTAL PROTECTION Co Ltd
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Abstract

The utility model relates to the gas cleaning after a kind of sludge incineration and equipment for reclaiming, comprises cryophorus, condensation water tank, water circulating pump, ejector, heat-resistingly draws air blast, secondary shower nozzle, aeration tank, cyclone dust collectors, sack cleaner, desulfuring and denitrifying apparatus and chimney; Wherein, described cryophorus is connected with condensation water tank, the heat-resisting air blast that draws respectively; Described condensation water tank, water circulating pump, ejector connect successively; The described heat-resisting air blast that draws also is connected on ejector; The described heat-resisting air blast that draws also is connected with cyclone dust collectors, sack cleaner, desulfuring and denitrifying apparatus, chimney successively; Described secondary nozzle connecting is connected on ejector, and water is spurted into aeration tank by it; Described aeration tank is connected to water circulating pump.Adopt above equipment, achieve the purification of flue gas, decrease investment and the operating cost of system; And make the water temperature in aeration tank improve 2 ~ 4 degree, improve the removal efficiency to organic matter and nutrients ammonia nitrogen.

Description

Gas cleaning after a kind of sludge incineration and equipment for reclaiming
[technical field]
The utility model relates to a kind of fume treatment auxiliary, is specifically related to the gas cleaning after a kind of sludge incineration and equipment for reclaiming, belongs to fume treatment auxiliary technical field.
[background technology]
Mud is the product in sewage disposal process, and its moisture content is higher, but has more organic matter and nutrients in dry (i.e. over dry mud), in addition, also containing more bacterium and pathogenic bacteria in mud.The outlet of mud is the difficult problem that puzzlement sewage treatment plant normally runs.
There are landfill, Land_use change (agricultural or woods with, mine Nutrition Soil with), industrial utilization (burnings, brickmaking, cement building material etc.) in conventional sludge ultimate disposal direction, but increasing employing burning method carrys out disposing sludge.This is because land resource is more and more nervous in recent years, place reason makes landfill be restricted; Similarly, due to the reason of technology (index such as heavy metal, pathogenic bacteria is difficult to meet the demands) and management (as the marketing), policy (as incomplete in specification, policy), Land_use change is also difficult to promote.
But sludge incineration can bring atmosphere polluting problem again.Flue gas has higher temperature, containing the sour gas such as sulfur dioxide, nitrogen oxide and certain dust, stink substance, needs to adopt strict dedusting, desulphurization and denitration, deodorization process to eliminate new pollution.This will increase a large amount of investments and operating cost undoubtedly, consumes the resources such as a large amount of electricity charge and aqueous slkali simultaneously.Sometimes marquis, the chimney of discharge flue gas also usually has influence on neighbouring resident, easily causes contradiction, produces dispute.
Similarly, gaseous contamination is produced too in mud drying process.With smoke pollution material unlike, the temperature of drying tail gas is lower slightly, but containing more volatile organic matter and foul smell class material.
On the other hand, during sewage treatment plant's winter operation, often make water outlet ammonia nitrogen can not be up to standard because water temperature is on the low side.This is because under low temperature condition, the growth metabolism speed of bacterium is slow, and degradation capability is low.If adopt thermal source such as coal, electricity, oil, the combustion of natural gas of high-quality to heat sewage, operating cost and investment can be increased considerably undoubtedly.During fume emission, temperature is higher, and the above energy can be replaced to heat sewage.
And for some alkaline waste water, as dyeing waste water, paper waste, adopt biological treatment to need acid neutralization.Need in this process to consume certain acid.And carbon dioxide in flue gas, sulfur dioxide, nitrogen oxide can the alkalescence of neutralized wastewater.
Therefore, for solving the problems of the technologies described above, the gas cleaning after the necessary sludge incineration providing a kind of innovation and equipment for reclaiming, to overcome described defect of the prior art.
[utility model content]
For solving the problems of the technologies described above, the purpose of this utility model is the gas cleaning after providing a kind of sludge incineration and reclamation set, flue gas after it uses sludge incineration heats sewage, in and sewage in alkaline matter, make the sour gas such as the sulfur dioxide in flue gas, nitrogen oxide and the harmful substance such as dust, stink be removed simultaneously.
For achieving the above object, the technical scheme that the utility model is taked is: the gas cleaning after a kind of sludge incineration and equipment for reclaiming, and it comprises cryophorus, condensation water tank, water circulating pump, ejector, heat-resistingly draws air blast, secondary shower nozzle, aeration tank, cyclone dust collectors, sack cleaner, desulfuring and denitrifying apparatus and chimney; Wherein, described cryophorus is connected with condensation water tank, the heat-resisting air blast that draws respectively; Described condensation water tank, water circulating pump, ejector connect successively; The described heat-resisting air blast that draws also is connected on ejector; The described heat-resisting air blast that draws also is connected with cyclone dust collectors, sack cleaner, desulfuring and denitrifying apparatus, chimney successively; Described secondary nozzle connecting is connected on ejector, and water is spurted into aeration tank by it; Described aeration tank is connected to water circulating pump.
Gas cleaning after sludge incineration of the present utility model and equipment for reclaiming are set to further: described aeration tank is connected on water circulating pump; Described recirculated water pump lift is 12 ~ 16 meters.
Gas cleaning after sludge incineration of the present utility model and equipment for reclaiming are also set to: described ejector is the ejector of 304 stainless steels.
Compared with prior art, the utility model has following beneficial effect: the gas cleaning after sludge incineration of the present utility model and equipment for reclaiming utilize the flue gas after burning to heat sewage, in and sewage in alkaline matter, make the sour gas such as the sulfur dioxide in flue gas, nitrogen oxide and the harmful substance such as dust, stink be removed simultaneously, thus achieve the purification of flue gas, decrease investment and the operating cost of system; And make the water temperature in aeration tank improve 2 ~ 4 degree, improve the removal efficiency to organic matter and nutrients ammonia nitrogen.
[accompanying drawing explanation]
Fig. 1 is the schematic diagram of gas cleaning after sludge incineration of the present utility model and equipment for reclaiming.
[detailed description of the invention]
Refer to shown in Figure of description 1, the utility model is gas cleaning after a kind of sludge incineration and equipment for reclaiming, and it is made up of cryophorus 1, condensation water tank 2, water circulating pump 3, ejector 4, heat-resisting several parts such as air blast 5, secondary shower nozzle 6, aeration tank 7, cyclone dust collectors 8, sack cleaner 9, desulfuring and denitrifying apparatus 10 and chimney 11 of drawing.
Wherein, described cryophorus 1 is connected with condensation water tank 2, the heat-resisting air blast 5 that draws respectively.This cryophorus 1, for lowering the temperature to high-temperature flue gas, heats the water in condensation water tank 2 simultaneously.
Described condensation water tank 2, water circulating pump 3, ejector 4 connect successively.High-temperature water in condensation water tank 2 enters ejector 4 by water circulating pump 3.
The described heat-resisting air blast 5 that draws also is connected on ejector 4, and it is for delivering to ejector 4 by the flue gas partial after cooling.The described heat-resisting air blast 5 that draws also is connected with cyclone dust collectors 8, sack cleaner 9, desulfuring and denitrifying apparatus 10, chimney 11 successively; Realize dedusting, desulphurization and denitration, deodorizing by cyclone dust collectors 8, sack cleaner 9, desulfuring and denitrifying apparatus 10, and discharged by chimney 11.And described cyclone dust collectors 8, sack cleaner 9, desulfuring and denitrifying apparatus 10 are prior art, do not repeat them here.
Described ejector 4 adopts venturi principle to be made, and it selects 304 stainless steels.This ejector 4 makes flue gas fully mix with water, makes carbon dioxide, sulfur dioxide, nitrogen oxide and dirt, foul smell class substance dissolves among liquid phase.
Described secondary shower nozzle 6 is connected on ejector 4, water to be spurted in aeration tank 7 and alkaline matter in the sewage of aeration tank 7 by it, make the sour gas such as the sulfur dioxide in flue gas, nitrogen oxide and the harmful substance such as dust, stink be removed simultaneously, thus achieve the purification of flue gas.
Described aeration tank 7 is connected to water circulating pump 3, utilizes the sewage in aeration tank 7 by water circulating pump 3.
The processing step that employing the said equipment comes the gas cleaning after to sludge incineration and reuse is as follows:
1), the flue gas after sludge incineration, first through cryophorus 1, makes flue-gas temperature reduce, and meanwhile, flue gas is connected to the water in the condensation water tank 2 on cryophorus 1; It is 95 ~ 105 DEG C through the condensed flue-gas temperature of cryophorus 1.
2), the high-temperature water in condensation water tank 2, through water circulating pump 3, enters ejector 4; Wherein, the lift of described water circulating pump 3 is 12 ~ 16 meters;
3), cooled flue gas enters the heat-resisting air blast 5 that draws and pressurizes, and part of smoke enters ejector 4, cooled flue gas and high-temperature water is mixed in ejector 4, and forms air-water mixture; Another part flue gas processes through cyclone dust collectors 8, sack cleaner 9 and desulfuring and denitrifying apparatus 10 successively, discharges eventually through chimney 11; Wherein, described heat-resisting air blast 5 outlet pressure that draws is 20 ~ 30kpa; The mixing ratio of described flue gas and high-temperature water is (0.5 ~ 2.5): 1, is preferably 2: 1;
4), by connecting one or two shower nozzles 6 on ejector 4, air-water mixture being spurted into an aeration tank 7, the alkaline waste water in aeration tank 7 is neutralized, and the water temperature improved in aeration tank 7, thus improve the removal efficiency to organic matter and nutrients ammonia nitrogen.
Be below an application example of gas cleaning after sludge incineration of the present utility model and equipment for reclaiming:
Certain sewage treatment plant's scale is 50,000 ton per days, the sludge quantity that every day produces is the mud cake (every day produces 10 tons of dry solids) of 50 tons of moisture content 80%, for realizing the minimizing of mud and innoxious, mummification+treatment process burned of controlling oneself is adopted in factory, namely first by deeply dehydrating sludge, reach moisture content 50%, then self-sustaining burning in factory, and pass through the smoke stack emission of height 15 meters.
Exhaust gas volumn is 3000 cubes ms/h, and flue-gas temperature is 280 degree degrees Celsius.First by the heat-resisting air blast 5 that draws, flue gas is drawn pressurization.Heat-resisting parameter of drawing air blast 5 is the resistance to hot-air blower of full blast CX-125H, boosting 28kpa, air quantity 50m3/min.
Water circulating pump 3 adopts 1500 cubes ms/h, lift 13 meters, necessary electromotor power 95kw.After connect a GW3600 ejector 4, connect the heat-resisting pressurization flue gas drawing air blast 5 above air entry.Ejector 4 water outlet enters secondary shower nozzle, and by secondary shower nozzle, air-water mixture is released into aeration tank 7, thus the alkaline matter in coming and in the sewage of aeration tank 7, make the sour gas such as the sulfur dioxide in flue gas, nitrogen oxide and the harmful substance such as dust, stink be removed simultaneously.
Adopt above method and apparatus, achieve the purification of flue gas, decrease investment and the operating cost of system; And make the water temperature in aeration tank improve 2 ~ 4 degree, improve the removal efficiency to organic matter and nutrients ammonia nitrogen.
Above detailed description of the invention is only the preferred embodiment of this creation, and not in order to limit this creation, any amendment made within all spirit in this creation and principle, equivalent replacement, improvement etc., within the protection domain that all should be included in this creation.

Claims (3)

1. the gas cleaning after sludge incineration and an equipment for reclaiming, is characterized in that: comprise cryophorus, condensation water tank, water circulating pump, ejector, heat-resistingly draw air blast, secondary shower nozzle, aeration tank, cyclone dust collectors, sack cleaner, desulfuring and denitrifying apparatus and chimney; Wherein, described cryophorus is connected with condensation water tank, the heat-resisting air blast that draws respectively; Described condensation water tank, water circulating pump, ejector connect successively; The described heat-resisting air blast that draws also is connected on ejector; The described heat-resisting air blast that draws also is connected with cyclone dust collectors, sack cleaner, desulfuring and denitrifying apparatus, chimney successively; Described secondary nozzle connecting is connected on ejector, and water is spurted into aeration tank by it; Described aeration tank is connected to water circulating pump.
2. the gas cleaning after sludge incineration as claimed in claim 1 and equipment for reclaiming, is characterized in that: described aeration tank is connected on water circulating pump; Described recirculated water pump lift is 12 ~ 16 meters.
3. the gas cleaning after sludge incineration as claimed in claim 1 and equipment for reclaiming, is characterized in that: described ejector is the ejector of 304 stainless steels.
CN201420639856.9U 2014-10-25 2014-10-25 Gas cleaning after a kind of sludge incineration and equipment for reclaiming Active CN204233965U (en)

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CN201420639856.9U CN204233965U (en) 2014-10-25 2014-10-25 Gas cleaning after a kind of sludge incineration and equipment for reclaiming

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Application Number Priority Date Filing Date Title
CN201420639856.9U CN204233965U (en) 2014-10-25 2014-10-25 Gas cleaning after a kind of sludge incineration and equipment for reclaiming

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CN204233965U true CN204233965U (en) 2015-04-01

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104353340A (en) * 2014-10-25 2015-02-18 陈列鑫 Purifying and recycling method and equipment for flue gas generated after sludge incineration
CN104353341A (en) * 2014-10-25 2015-02-18 傅小娟 Sludge incineration flue gas treatment method and equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104353340A (en) * 2014-10-25 2015-02-18 陈列鑫 Purifying and recycling method and equipment for flue gas generated after sludge incineration
CN104353341A (en) * 2014-10-25 2015-02-18 傅小娟 Sludge incineration flue gas treatment method and equipment

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Address after: Conghua Ao town Guangzhou city Guangdong province 510940 forward Road No. 3 building fourth room 363 self

Patentee after: Guangdong Yeanovo Environmental Protection Co., Ltd.

Address before: Minle Conghua Ao town new road Guangzhou 510000 Guangdong province No. 38

Patentee before: GUANGZHOU ENUO ENVIRONMENTAL PROTECTION CO., LTD.