A kind of refuse disposal system device of effective containment dioxin
Technical field
The utility model belongs to the refuse disposal installation in environmental protection field, is specifically related to a kind of refuse disposal system device of effective containment dioxin.
Background technology
At present, domestic rubbish disposal both at home and abroad mainly contains methods such as sanitary landfills, system (heap) fertilizer, burning.China has about 85% to be landfill at present; Be burning about 10%; Be other processing modes such as fertile, the living producing firedamp gas of system (heap) about 5%.Though above variety of way respectively has advantage; But all there are some problems and shortcomings: 1, garbage loading embeading; Though than landfill not with huddle be placed with improve; Investment and operating cost are also low than burning, and cause that with constantly increasing land occupation, long-term pollution underground water and influencing gases such as ambient air environment, generation alkanes spontaneous combustion produces problems such as dioxin harm but existence is long-term; 2, waste incineration, though have superiority than landfill subtracting to hold decrement and harmless treatment and account for aspect such as soil less, exist investment greatly, problem such as operating cost is high, the dioxin generation is big, toxic emission is big, heat utilization is low, comprehensive utilization is poor; 3, system (heap) fertilizer waits other modes; Though the organic matter in the rubbish is obtained utilization to a certain degree; But there is problems such as removing product quality is not high, the difficult acceptance in market, also has garbage disposal minimizing not high (generally about 50%), innoxious not thoroughly (harm such as waste gas, waste water, waste residue, waste plastics fail thoroughly to solve), the poor problems such as (general utilization are below 60%) of recycling.
The utility model content
The technical problem that the utility model will solve is effectively to contain being difficult to of existing in the domestic rubbish disposal pollutions such as dioxin and waste water (comprise oozing in the garbage disposal drop liquid), waste residue, pernicious gas and the garbage disposal minimizing is not enough, recycling is relatively poor, innoxious problem such as not thorough, discloses a kind of refuse disposal system device of effective containment dioxin.
For achieving the above object, the refuse disposal system device of a kind of effective containment dioxin of the utility model comprises refuse classification, drying, storage device; Rubbish destructive distillation pyrolysis gasifying device; Cinder, fuel gas integrated treatment and use device; Integrated treatment of waste gas waste water and use device.
Wherein, Said refuse classification, drying, storage device comprise separation unit, drying unit, storage element composition, wherein; Separation unit is successively by the chain-linked conveyer (1) that receives house refuse, and chain type conveyer belt (18), Bulky Waste sorting platform (6), rotary screen (8) are formed;
Described drying unit is by the tramp iron separator I (23) that is used for the oversize deironing after the sorting, and belt conveyor I (26), drying drum (13) are formed; The thermal source of said drying drum (13) comprises the waste heat gas of sending comprehensive utilization from tunnel brick-baking kiln (28) through waste heat pipeline (14) here; The tail gas that said drying drum (13) produces is delivered to emission-control equipment (29) through exhaust pipe (15) and is handled;
Described storage element is stored by belt conveyor III (16), rubbish warehouse (31).
Wherein, said rubbish destructive distillation pyrolysis gasifying device comprises feed arrangement, destructive distillation pyrolysis gasification furnace, waste gas recovering device and lime-ash treating apparatus; Said feed arrangement comprises feeding warehouse (3) and the pusher oil cylinder (17) that is connected with feeding warehouse (3); Feed arrangement one end links to each other with the dryer section (4) of destructive distillation pyrolysis gasification furnace; Said destructive distillation pyrolysis gasification furnace comprises top-down dryer section (4), retort section (20), pyrolytic gasification section (21); Said dryer section (4) upper end is provided with and comprises and compress material pressing device (19) and the Hydraulic Station (5) that hydraulic cylinder and binder block are connected as a single entity; Said dryer section (4) and epimere escape pipe (45), retort section (20) links to each other with hypomere escape pipe I (37); The middle and lower part of said pyrolytic gasification section (21) is provided with and comprises automatic poker device (7), and the bottom is provided with lime-ash treating apparatus (35); The internal diameter of said retort section (20) is less than the internal diameter of dryer section (4), and the internal diameter of dryer section (4) is less than the internal diameter of pyrolytic gasification section (21); Be provided with around the said pyrolytic gasification section (21) and comprise that the waste heat recovery plant (32) that can connect water inlet pipe, said waste heat recovery plant (32) comprise and be arranged on pyrolytic gasification section (21) water jacket on every side that water jacket links to each other with water inlet endless tube, safety valve, steam lead etc.; Following three layers of fire grate during said automatic poker device (7) comprises, the gap of said three layers of fire grate and be wider than the middle level apart from the upper strata between the upper and lower, lower floor is wider than in the middle level; Air in said pyrolytic gasification section (21) and the automatic poker device (7) comprises the air that is blasted through draft furnace wind castor (34) by the ventilation duct (33) of air blast through furnace bottom; Said waste gas recovering device comprises epimere escape pipe (45) and hypomere escape pipe I (37); Said hypomere escape pipe I (37) links to each other with the cyclone dust collectors (39) that the upper end is provided with moushroom valve (22); Said cyclone dust collectors lower end links to each other with ash tube (38); Said cyclone dust collectors upper end moushroom valves (22) link to each other with total flashback tank I (42) through hypomere escape pipe II (40); Total flashback tank I (42) links to each other with combustion gas endless tube (43); Epimere escape pipe (45) links to each other with upper end combustion gas flashback tank (44); Upper end combustion gas flashback tank (44) links to each other with electrical tar precipitator (11); Said electrical tar precipitator (11) lower end is provided with coke discharging oil pipe (46), and the electrical tar precipitator upper end is provided with the outer containment vessel (10) of emptying exhaust stack I (25) and corona electrode (24) and corona electrode; Said electrical tar precipitator (11) links to each other through the clean gas pipe (48) after stop valve (27) and the decoking, and clean gas pipe (48) links to each other with total flashback tank II (47); Total flashback tank II (47) links to each other with combustion gas endless tube (43), and combustion gas endless tube (43) links to each other with combustion gas house steward (41) through total flashback tank I (42), and combustion gas house steward (41) links to each other with tunnel brick-baking kiln (28); Said lime-ash treating apparatus (35) comprises ash-pan, slag bucket, transmission device, the deslagging device that links together; Said lime-ash treating apparatus (35) top is provided with draft furnace wind castor (34), and draft furnace wind castor (34) links to each other with ventilation duct (33).
Wherein, said cinder, fuel gas integrated treatment and use device comprise that cinder treating apparatus, fuel gas carry out integrated treatment and recycling device; Said cinder comprises slag that screenings and the destructive distillation pyrolysis gasification furnace of rotary screen (8) are discharged and cyclone dust collectors (39) dust under removing; Said lime-ash is handled; Comprise these cinders, by a certain percentage (about 30%) with comprise that gangue, shale, mud carry out comprehensive utilization of resources as the interpolation raw material of brickmaking; Said fuel gas carries out integrated treatment and recycling; Comprise the fuel gas that produces behind the rubbish destructive distillation pyrolytic gasification removed tar and handles through electrical tar precipitator (11) after, be transported to through combustion gas house steward (41) and comprise that generating set (49) is used for generating as reproducible new forms of energy or as car, combustion gas peculiar to vessel comprehensive utilization; Said generating comprises with gas turbine power generation or steam turbine generating; Said waste heat tail gas of baking bricks is transported to drying drum (13) through waste heat pipeline (14) and is used for garbage drying.
Wherein, integrated treatment of said waste gas waste water and use device comprise the spray column and the treatment tank of the final waste gas waste water integrated treatment of garbage disposal and brickmaking; Said integrated treatment comprises the tail gas of discharging behind drying drum (13) garbage drying, is transported to emission-control equipment (29) through exhaust pipe (15) and handles; Said emission-control equipment (29) top is provided with emptying exhaust stack II (30), and said exhaust-gas treatment comprises with spray column washs neutralization, carries out smoke abatement and dust control simultaneously and handles; The cycling use of water of said spray column comprises puts into the alkaline water that lime or other modes form, and the acid tail gas of band gets into spray column, and through alkaline water washing neutralization, it is up to standard after emptying exhaust stack II (30) discharging to carry out smoke abatement and dust control simultaneously; Said waste gas of baking bricks comprises qualified discharge after pipeline is connected to emission-control equipment and handles equally; Said waste water comprises the waste water that waste water and spray column produced that produces in the garbage disposal process; Said waste water integrated treatment and utilization comprise waste water are carried out biochemical circular treatment with pump suction treatment tank (51), and the water of treated qualified discharge all comprises that with the pump suction brick field brickmaking workshop (50) replenishes the brickmaking water; The mud that said wastewater treatment produces participates in brickmaking by a certain percentage as the interpolation raw material that comprises brickmaking.
The beneficial effect of the utility model:
1, can effectively contain the generation and the harm of dioxin
Primary composting is through the utility model technical finesse; Can effectively contain the generation and the harm (the dioxin discharge index can be controlled in below the 0.03ng/m3) of dioxin; Can not only reach the discharge standard (standard of China's incinerator toxic emission dioxin is 1.0ng/m3) of China; And can be superior to most advanced world Japan and the discharge standard (0.10ng/m3 of European Union greatly;), this is the most outstanding beneficial effect of the present invention, also is that the present invention will make one of bright spot of major contribution for China and even world's environmental protection cause and human health.
Current, no matter waste incineration and generating electricity technology both domestic and external is grate furnace, gas-controlled type boiler, CFBB etc.; Because the process of incineration treatment of garbage is an oxidation reaction; So, directly burn the primary composting that comprises plastics, unavoidably to produce a large amount of dioxin; Though can control or reduce the discharging of dioxin through measures such as active carbon adsorption and bag-type dusts; If but poor management or misoperation is arranged slightly, the discharging that will exceed standard causes the serious consequence of dioxin contamination.Adopt the utility model technical finesse garbage energy effectively to contain the generation and the harm of dioxin, need not just can reach or be superior to most advanced world Japan and European Union's discharge standard, can reduce the risk of dioxin contamination greatly through active carbon adsorption and bag-type dust.Because dioxin is called as " the first under heaven poison ", and is extremely harmful to human health, thereby the direct burning electricity generation of primary composting often receives the common people and resolutely opposes.
2, innoxious thorough
Primary composting adopts the utility model technical finesse; Can accomplish sterilization, sterilization, deodorizing; And can contain effectively that dioxin produces and harm; Reach " no waste water, no waste residue " discharging, burn directly with primary composting that the dioxin generation is big, garbage loading embeading long-term pollution air is compared with underground water, innoxious more thorough.
3, the recycling rate is high
Primary composting adopts the utility model technical finesse, and organic matter becomes fuel gas through the destructive distillation pyrolytic gasification and all effectively utilizes as new forms of energy; Inorganic matter and waste residue are as whole recyclings of interpolation raw material such as brickmaking, and its recycling rate has only about 50% to compare near 100% with recycling rates such as burning electricity generation, rubbish compostings, and its recycling rate improves greatly.
4, minimizing is remarkable
Primary composting adopts the utility model technical finesse, and organic matter has become fuel gas and all collected utilization; Inorganic matter comprises that sieve sandy soil and lime-ash down all carries out recycling as the interpolation raw material of brickmaking etc., has reached " no waste water, no waste residue " to discharge, and the physical form of rubbish is all cleared up, and minimizing is near 100%.Can only decrement tens percent compare at most with present garbage loading embeading and burning etc., minimizing very significantly.
Description of drawings
Fig. 1 is the process flow diagram of the utility model
Among the figure: 1---chain-linked conveyer, 2---grab bucket, 3---feeding warehouse, 4---dryer section, 5---Hydraulic Station; 6---Bulky Waste sorting platform, 7---automatic poker device, 8---rotary screen, 9---tramp iron separator II, 10---the outer containment vessel of corona electrode; 11---electrical tar precipitator, 12---belt conveyor II, 13---drying drum, 14---the waste heat pipeline, 15---exhaust pipe; 16---belt conveyor III, 17---the pusher oil cylinder, 18---the chain type conveyer belt, 19---material pressing device, 20---retort section; 21---the pyrolytic gasification section, 22---moushroom valve, 23---tramp iron separator I, 24---corona electrode, 25---emptying exhaust stack I; 26---belt conveyor I, 27---stop valve, 28---the tunnel brick-baking kiln
29---emission-control equipment, 30---emptying exhaust stack II, 31---the rubbish warehouse, 32---waste heat recovery plant, 33---ventilation duct; 34---draft furnace wind castor, 35---the lime-ash treating apparatus, 36---belt conveyor IV, 37---hypomere escape pipe I, 38---ash tube; 39---cyclone dust collectors, 40---hypomere escape pipe II, 41---the combustion gas house steward, 42---total flashback tank I, 43---the combustion gas endless tube; 44---upper end combustion gas flashback tank, 45---the epimere escape pipe, 46---the coke discharging oil pipe, 47---total flashback tank II; 48---the clean gas pipe, 49---generating set, 50---brick field brickmaking workshop, 51---treatment tank.
The specific embodiment
As shown in Figure 1, the utility model comprises refuse classification, drying, storage device; Rubbish destructive distillation pyrolysis gasifying device; Cinder, fuel gas integrated treatment and use device; Comprehensive utilization of waste gas waste water and treating apparatus.
Said refuse classification, drying, storage device comprise devices such as rotary screen, drying drum, rubbish warehouse; Its disposal of refuse method comprises pours the house refuse that ships into chain-linked conveyer 1, and the rubbish of successively rubbish being delivered to after the chain type conveyer belt 18 that is connected, Bulky Waste sorting platform 6, the Bulky Waste sorting gets into rotary screen 8; The said Bulky Waste that sub-elects is done to get into separation system again after the break process in addition; The oversize of said rotary screen 8 gets into drying drum 13 through belt conveyor I 26 and carries out drying after tramp iron separator I 23 deironing; The screenings of said rotary screen 8 is sent to brick field brickmaking workshop 50 through belt conveyor II 12 and is made brickmaking interpolation raw material after tramp iron separator II 9 deironing; Send the salvage station processing and utilize again after ironware thing under said tramp iron separator I 23 removes with tramp iron separator II 9 is collected; Said drying drum 13 dried rubbish are sent into rubbish warehouse 31 through belt conveyor III16 and are carried out the next procedure processing; The tail gas that said drying drum 13 garbage dryings are produced through exhaust pipe 15 deliver to emission-control equipment 29 handle up to standard after the discharging; The thermal source of said drying drum 13 is baked bricks from tunnel brick-baking kiln 28 after the waste heat gas that waste heat pipeline 14 is sent here.
Said rubbish destructive distillation pyrolysis gasifying device comprises feed arrangement, destructive distillation pyrolysis gasification furnace, waste gas recovering device and lime-ash treating apparatus; Its waste disposal method comprises that using grab bucket 2 that the rubbish in the rubbish warehouse 31 are grabbed in the rubbish destructive distillation pyrolysis gasifying device handles, and accomplishes the rubbish processing on the same day on the same day; Said feed arrangement comprises feeding warehouse 3 and the pusher oil cylinder 17 that is connected with feeding warehouse 3; Feed arrangement one end links to each other with the dryer section 4 of destructive distillation pyrolysis gasification furnace; Said destructive distillation pyrolysis gasification furnace comprises top-down dryer section 4, retort section 20, pyrolytic gasification section 21; Dryer section 4 upper ends are provided with and comprise and compress the material pressing device 19 and Hydraulic Station 5 that hydraulic cylinder and binder block are connected as a single entity; Dryer section 4 and epimere escape pipe 45, retort section 20 links to each other with hypomere escape pipe I37; Pyrolytic gasification section 21 bottoms are provided with lime-ash treating apparatus 35; Said lime-ash treating apparatus 35 comprises ash-pan, slag bucket, transmission device, the deslagging device that links together; Lime-ash treating apparatus 35 tops are provided with draft furnace wind castor 34, and draft furnace wind castor 34 links to each other with ventilation duct 33.
Said waste gas recovering device comprises epimere escape pipe 45 and hypomere escape pipe I 37, and hypomere escape pipe I 37 links to each other with the cyclone dust collectors 39 that the upper end is provided with moushroom valve 22; The cyclone dust collectors lower end links to each other with ash tube 38; Cyclone dust collectors upper end moushroom valve 22 links to each other with total flashback tank I 42 through hypomere escape pipe II 40; Total flashback tank I 42 links to each other with combustion gas endless tube 43; Epimere escape pipe 45 links to each other with upper end combustion gas flashback tank 44; Combustion gas flashback tank 44 in upper end links to each other with electrical tar precipitator 11; Electrical tar precipitator 11 lower ends are provided with coke discharging oil pipe 46, and the electrical tar precipitator upper end is provided with emptying exhaust stack I 25 and corona electrode 24 and the outer containment vessel 10 of corona electrode; Electrical tar precipitator 11 links to each other through the clean gas pipe 48 after stop valve 27 and the decoking, and clean gas pipe 48 links to each other with total flashback tank II 47; Total flashback tank II 47 links to each other with combustion gas endless tube 43, and combustion gas endless tube 43 links to each other with combustion gas house steward 41 through total flashback tank I 42, and combustion gas house steward 41 links to each other with generating set 49.
The internal diameter of said destructive distillation pyrolysis gasification furnace retort section 5 is less than the internal diameter of dryer section 4, and the internal diameter of dryer section 4 is less than the internal diameter of pyrolytic gasification section 21.
Be provided with around the said destructive distillation pyrolysis gasification furnace pyrolytic gasification section 21 and comprise the waste heat recovery plant 32 that can connect water inlet pipe; Said waste heat recovery plant 32 comprises the water jacket that is arranged on around the pyrolytic gasification section 21; Water jacket links to each other with water inlet endless tube, safety valve, steam lead etc.; Water jacket adds water generates steam, and to be used to control furnace temperature unlikely too high, and to avoid body of heater to damage and the generation of nitrogen oxide, temperature generally is controlled at more than 850 ℃ in the stove; The middle and lower part of said pyrolytic gasification section 21 is provided with automatic poker device 7, following three layers of fire grate during said automatic poker device 7 comprises, the gap of said three layers of fire grate and between the upper and lower apart from the upper strata greater than the middle level, the middle level is greater than lower floor; Said poking fire automatically is in garbage carbonized thing pyrolytic gasification or the combustion process; When volume burning be varied down to a certain degree and width less than the fire grate gap after; Automatically drop to and continue pyrolytic gasification or burning on lower floor's fire grate; To descend the also after-burning of one deck again be ashes to dropping to, this device setting that comprises that garbage carbonized thing etc. drops layer by layer automatically in the pyrolytic gasification process reaches the purpose that pokes fire automatically; It is more sufficient that said automatic poker device can play the oxygen supply of pyrolytic gasification section; Burning is effect more fully; The required air that burns is blasted through draft furnace wind castor 34 by the ventilation duct 33 of air blast through furnace bottom; This ingenious setting that can play the grate furnace effect that pokes fire automatically, its combustion efficiency is more much better than the grate furnace that generally uses at present, has tangible innovation and breakthrough.
Said rubbish destructive distillation pyrolytic gasification is handled; Comprise the rubbish that gets into rubbish warehouse 31 after the drying is grabbed into feeding warehouse 3 with grab bucket 2; With pusher oil cylinder 17 rubbish is sent into the dryer section 4 of destructive distillation pyrolysis gasification furnace, the high temperature hot gas that rubbish at first rises by the furnace wall radiant heat of destructive distillation pyrolysis gasification furnace with from retort section 20 is further dry, and the further dry back of rubbish gets into retort section 20; After getting into retort section 20, produce organic matters such as plastics destructive distillation under anaerobic condition of dioxin in the rubbish; Said destructive distillation comprises solid organic matters heating and decomposition under the secluding air condition, and the destructive distillation result generates fuel gas, steam, tar and carbide such as alkanes, carbon monoxide; The generation of dioxin can be effectively contained in said destructive distillation; Fuel gas, tar and the steam that destructive distillation produces is discharged by epimere escape pipe 45, and fuel gas and tar are collected utilization after treatment; Inorganic matters such as formed carbide and dregs get into pyrolytic gasification sections 21 after the destructive distillation, and the carbide that gets into pyrolytic gasification section 21 has not contained the material that plastics etc. produce dioxin, after by high temperature pyrolysis and gasification more than 850 ℃; Get into the further fully burning of carbide in the automatic poker device 7; To turning to dust and ashes, fall into the ash-pan of deslagging device 35 after being compressed by material pressing device 19 with inorganic matters such as dregs, under the drive of ash-pan transmission device; Lime-ash is discharged the destructive distillation pyrolysis gasification furnace through removing slag bucket; The slag of discharging is delivered to the interpolation raw material that brick field brickmaking workshop 50 is used for brickmaking through belt conveyor IV 36, and so far, the destructive distillation pyrolytic gasification of rubbish is all accomplished; Said destructive distillation pyrolytic gasification process is hours of continuous run every days 24, blowing out when only limiting to annual scheduled overhaul or fault; Fault monitoring equipment is installed on the feed arrangement; Operating personnel are kept watch on by screen or are visual and can observe and control charging rate, and simultaneously, the furnace wall is provided with fire exploring hole; Operating personnel can observe stove internal combustion situation at any time, just can stop charging at any time or reduce charging rate in case break down.
The gas that said destructive distillation pyrolysis gasification furnace comes out links to each other with electrical tar precipitator 11 through epimere escape pipe 45; Hypomere escape pipe I 37 links to each other with cyclone dust collectors 39; The gas of last hypomere respectively through dedusting, remove tar, remove steam after; Can obtain the fuel gas of high-quality, the complete qualified discharge of gas that discharges through emptying exhaust stack 25 after treatment.
Said cinder, fuel gas integrated treatment and use device comprise that cinder treating apparatus, fuel gas carry out integrated treatment and recycling device; Its disposal of refuse method comprises carries out integrated treatment and recycling with cinder and fuel gas; Said cinder comprises slag that screenings and the destructive distillation pyrolysis gasification furnace of rotary screen 8 are discharged and cyclone dust collectors 39 dust under removing etc.; These cinders, (about 30%) adds raw material as the brickmaking of brickmaking factory 50 and carries out integrated treatment and recycling with comprising batchings such as gangue, shale, mud by a certain percentage; Said brickmaking comprises through tunnel brick-baking kiln 28 carries out sintering, and the waste heat tail gas of baking bricks is transported to drying drum 13 through waste heat pipeline 14 and is used for garbage drying, realizes integrated treatment and recycle; Said fuel gas carries out integrated treatment and recycling, comprises that the fuel gas that produces behind the rubbish destructive distillation pyrolytic gasification is removed tar through electrical tar precipitator 11 to be handled; Fuel gas after treatment is used to comprise power generator group 49 generating as reproducible new forms of energy or as comprehensive utilizations such as car, combustion gas peculiar to vessel; The fuel gas that adopts rubbish self to produce generates electricity as clean energy resource, compares with the waste incineration and generating electricity of need coal more than 20% that generally adopts both at home and abroad at present, and the thermal efficiency and generating rate are higher, and operating cost is lower, more energy-conservation and environmental protection; This integrated treatment and utilize the method for lime-ash, fuel gas not only can reduce the consumption of conventional energy resources such as comprising coal and resource, also can reduce noxious gas emissions such as comprising carbon dioxide, has the good result of energy-saving and emission-reduction.
Integrated treatment of said waste gas waste water and use device comprise the spray column and the treatment tank of the final waste gas waste water integrated treatment of garbage disposal and brickmaking etc.; The waste gas of said garbage disposal mainly comprises the tail gas of discharging behind drying drum 13 garbage dryings; Being transported to emission-control equipment 29 through exhaust pipe 15 handles; Said emission-control equipment 29 tops are provided with emptying exhaust stack II 30; Said exhaust-gas treatment comprises with spray column washs neutralization, carries out smoke abatement and dust control simultaneously and handles; The cycling use of water of said spray column comprises puts into the alkaline water that lime or other modes form, and the acid tail gas of band gets into spray column, and through alkaline water washing neutralization, it is up to standard after emptying exhaust stack II 30 dischargings to carry out smoke abatement and dust control simultaneously; Said waste gas of baking bricks comprises qualified discharge after pipeline is connected to emission-control equipment and handles equally.
Said waste water comprises the waste water that waste water and spray column produced that produces in the garbage disposal process; Said waste water integrated treatment and utilization; Comprise waste water carried out biochemical circular treatment with pump suction treatment tank 51 that the water of treated qualified discharge all comprises that with the pump suction brick field brickmaking workshop 50 replenishes the brickmaking water; Reach waste water integrated treatment and utilization, realize wastewater zero discharge;
Mud integrated treatment and utilization that said wastewater treatment produces; Comprise the interpolation raw material of mud as brickmaking; Participate in brickmaking by a certain percentage, in the process of baking bricks, improve on the one hand self calorific value of fragment of brick, again mud is reached harmless treatment behind high temperature sintering on the other hand; Reach comprehensive garbage disposal and utilization, realize the zero-emission of garbage disposal discarded object.