CN101016990A

CN101016990A - Vertical life refuse heat decomposition incinerator

Info

Publication number: CN101016990A
Application number: CN 200710073251
Authority: CN
Inventors: (要求不公开姓名)
Original assignee: CHINA UNITED ENTERPRISE
Current assignee: Shenzhen Jingji Environmental Protection Equipment Co., Ltd.
Priority date: 2007-02-12
Filing date: 2007-02-12
Publication date: 2007-08-15
Anticipated expiration: 2027-02-12
Also published as: CN100549521C

Abstract

The invention discloses an upright life waste thermal decomposition incinerator, comprising a body, a hopper and a feeding chamber at the front of the body, and a slag outlet at the back end, a feeder at the front end of the hopper and the feeding chamber. The feeder is step feeder formed by a taper hopper, a groove, a horizontal step plate, a hydraulic driver and a hot wind drying room. The horizontal step plate is connected with the taper hopper above and the hot wind drying room under, while it is driven by the hydraulic driver, to stepped push waste into an outlet. The hot wind drying room is connected with a smoke air preheater in the tail smoke channel of the boiler. The slag outlet is hydraulic arm slag outlet device, which arranges a slag scrape plate at the bottom of the water sealing groove at the bottom of lower wind inlet tube under a slag hopper, while the plate is driven by an arm connecting rod transmitter. The invention can be used in high-water low-heat waste incinerator.

Description

Vertical life refuse heat decomposition incinerator

Technical field

The present invention relates to the incinerator in a kind of energy environment protection equipment, relate in particular to a kind of domestic waste incineration.It can be used for burning low heat value, high-moisture especially, without the domestic garbage burning electricity generation of letter sorting.

Background technology

Along with modern production development and urban population increase and level of consumption raising, the garbage environment pollution of generation causes social effects of pollution, causes the attention of various countries already.At present, the processing method of domestic waste has two big kinds, promptly burns and sanitary landfills.It oozes the many again polluted underground waters of drop liquid to the latter because of taking a large amount of soils, and landfill yard has caused the secondary pollution surrounding enviroment again.The external incineration treatment of garbage that adopts has mostly realized minimizing, innoxious, resource purpose.The starting of China incineration treatment of garbage soon, garbage combustion device mainly contains three kinds: i.e. mechanical kiln grate furnace, Circulation fluidized-bed furnace and thermal decomposition furnace.Thermal decomposition furnace is the incinerator of domestic firm exploitation, and it has two kinds of forms, the one, and horizontal, the disposal of refuse amount was 150t/d in maximum day, the 2nd, the vertical rotating type, the design maximum throughput is 100t/d.The vertical rotating thermal decomposition furnace especially contains the domestic waste that moisture is big, calorific value is on the low side because of a series of problems such as its device systems, does not all arrive the specified treating capacity of design as yet safely and steadly.Chinese patent 02111455.2 discloses a kind of domestic waste incineration.It contains body of heater, batcher, the fire grate of being with hopper, is positioned at air compartment, mucking machine under the fire grate, wherein fire grate segment contain be cemented in the stator on the body of heater and be spaced between the two adjacent stators of front and back and with move back and forth the activity template that rod member is connected, it is characterized in that: fire grate is divided into two sections of leading portion and back segments along the rubbish traffic direction, leading portion near hopper is that downward-sloping inverse-push fire grate, back segment is forwards formula fire grate, and is provided with the drop of certain altitude at the joining place of front and rear sections fire grate.Its weak point, the one, it is predrying that shortage rubbish is gone into stove, combustion instability, the 2nd, UTILIZATION OF VESIDUAL HEAT IN is also not enough, and the 3rd, mucking machine hangs down the water seal requirement, is difficult for overcoming the blast pipe blast.

Summary of the invention

The technical problem to be solved in the present invention is, in order to remedy the weak point of existing vertical life refuse heat decomposition incinerator incompatibility high-moisture, low heat value consumer waste incineration, a kind of adaptation high-moisture, waste of low heating value burn, UTILIZATION OF VESIDUAL HEAT IN is abundant, the vertical life refuse heat decomposition incinerator that the mucking machine water seal is high and provide.

The present invention solves the problems of the technologies described above to adopt following technical scheme: a kind of vertical life refuse heat decomposition incinerator, comprise the incinerator body, and be hopper and add feed bin that at incinerator body front end the rear end is a deslagging device; It is characterized in that: at hopper and add the feed bin front end feeding device is set; Described feeding device is a step-transit conveyor, mainly contains broach hopper, hopper, horizontal stepping plate, fluid pressure drive device and hot wind drying room and forms; The top of horizontal stepping plate connects broach hopper, and the below is provided with hot wind drying room; Horizontal stepping plate is driven by fluid pressure drive device, and step-by-step movement pushes discharging opening with rubbish.

Described hot wind drying room pipeline connects the flue gas air preheater in the incinerator body boiler back end ductwork, introduces the oven dry hot-air.Utilize fume afterheat to heat cold wind, the hot blast after being heated is for the step-by-step movement garbage conveyor.Hot blast can be used as its standby hot air source.

Described deslagging device adopts the arm-type mucking machine of hydraulic pressure bucket; Its structure is that hawk is scraped in the setting of blast pipe bottom water sealing groove inner bottom part below grey slag bucket outlet, scrapes hawk and is driven by the arm-type jointed gear unit of bucket.

Good effect of the present invention is owing to adopt the step-transit conveyor of band hot-air seasoning, to have the following advantages:

1. at the characteristic of the high and low calorific value of domestic waste moisture, make into the house refuse of incinerator and carry out prebake, make into the stove refuse thermal value and improve.

2. because the moisture prebake of the rubbish of incinerator, calorific value improves to make into stove rubbish and has reduced dry run, catches fire in advance, accelerates combustion process and stable waste incineration.This vertical heat decomposition incinerator is very favourable.

3. can reduce the high-moisture waste of low heating value surely uses auxiliary fuel, reduces operating cost.

4. can improve garbage treatment quantity.

Increase dress flue gas air preheater owing to adopt, utilize fume afterheat to heat cold wind, the hot blast after being heated is for the step-by-step movement garbage conveyor.Its advantage is:

1) provide supply drying step-transit conveyor thermal source.

2) utilize the waste-heat oven fume afterheat, reduce exhaust gas temperature and improve boiler efficiency.

3) burning of dual firing chamber's fuel gas of thermal decomposition furnace is with secondary wind (cold wind), for flue gas is fully burnt in dual firing chamber, guarantees fire box temperature more than 850 ℃ when using waste of low heating value, and when cold wind can not satisfy, hot blast can be used as its standby hot air source.

Because adopt the arm-type mucking machine of hydraulic pressure bucket, its advantage is:

(1) satisfy on the structure that slag tap in vertical rotating thermal decomposition furnace bottom, the structural requirement of air intake, this structure is because air intake blast height, requires the water sealed tank degree of depth of slagging tap higher, and general hydraulic pressure push-plate type mucking machine can not satisfy.

(2) fault rate is low, and maintenance is little, obviously is better than the carrier bar mucking machine.

(3) the mucking machine site environment more obviously improves, and can not realize carrying out production strictly in line with rules and regulations in carrier bar mucking machine scene.

Further specify the present invention below in conjunction with embodiment and accompanying drawing.

Description of drawings

Fig. 1 is an organigram of the present invention.

Fig. 2 is a feeding device organigram of the present invention.

Among the figure: 1. hopper and add feed bin, 2. the stepping feeding device, 3. the incinerator body, 4. deslagging device, 5. blast pipe, 6. scrape hawk, 7. tank, 8. jointed gear unit, 9. transfer bar mechanism, 10. fluid pressure drive device, 11. rolling wheel supports, 12. stepping plates, 13. hot wind drying room, 14. discharging openings.

The specific embodiment

Embodiment 1 is in Fig. 1,2, and a kind of vertical life refuse heat decomposition incinerator comprises incinerator body 3, is hoppers and adds feed bin 1 that at incinerator body 3 front ends the rear end is a deslagging device 4; It is characterized in that: at hopper and add feed bin 1 front end stepping feeding device 2 is set; Described feeding device 2 is a step-transit conveyor, mainly contains broach hopper, hopper, horizontal stepping plate 12, fluid pressure drive device 10 and hot wind drying room 13 and forms; The top of horizontal stepping plate 12 connects broach hopper 1, and the below is provided with hot wind drying room 13; Horizontal stepping plate 12 connects with rolling wheel support 11 upper push-rod mechanisms 9 and is driven by fluid pressure drive device 10, and step-by-step movement pushes discharging opening 14 with rubbish.The inventor adapts to high-moisture, low heat value consumer waste incineration existing problems at the vertical thermal decomposition furnace of the 100t/d that has put into operation, rubbish uses drying step-transit conveyor before going into vertical heat decomposition incinerator hopper, rubbish is gone into carry out before the incinerator predrying, make the pre-thermal evaporation of going ahead of the rest of part moisture, pre-dried rubbish is gone into be able to smooth combustion after stove decomposes.This at China's domestic waste moisture height, present situation that calorific value is low, will be very favourable, and vertical thermal decomposition furnace be very necessary especially especially.

Working method is that rubbish is dropped on the horizontal stepping plate of the broach hopper and the hopper that has been scattered by garbage crane, under the driving of fluid pressure drive device, several stepping plate advanced in unison, rubbish and then advances, then return one by one during stepping plate drawback movement, to stay original position motionless and rubbish is owing to the effect of mutual frictional resistance, treat that whole stepping plates fall back on original position, rubbish is promptly finished once and is moved ahead, and enters next circulation again, and so forth, rubbish slowly moves ahead gradually step by step, the stepper below is the hot blast air compartment, and 200 ℃ of hot blasts that enter air compartment penetrate in the waste layer by gap between each stepping plate and stepping plate windward hole, and the rubbish surface moisture is dried.Enter again in the heat decomposition incinerator system through the rubbish behind the preliminarily dried.

2 one kinds of vertical life refuse heat decomposition incinerators of embodiment, hot wind drying room 13 pipelines wherein connect the flue gas air preheater in the incinerator body boiler back end ductwork, introduce the oven dry hot-air.All the other are with embodiment 1.Utilize fume afterheat to heat cold wind, the hot blast after being heated is for the step-by-step movement garbage conveyor.Hot blast can be used as its standby hot air source.Utilize fume afterheat, can reduce exhaust gas temperature and improve boiler efficiency.

3 one kinds of vertical life refuse heat decomposition incinerators of embodiment, deslagging device 4 wherein adopts the arm-type mucking machine of hydraulic pressure bucket; Its structure is that hawk 6 is scraped in the 7 inner bottom part settings of blast pipe 5 bottom water sealing grooves below grey slag bucket outlet, scrapes hawk 6 and is driven by the arm-type jointed gear unit 8 of bucket.As shown in Figure 1.General garbage combustion device such as grate furnace and Circulation fluidized-bed furnace mucking machine adopt hydraulic pressure arc push pedal mucking machine or carrier bar mucking machine etc.Because its body of heater lower taper ash bucket of vertical rotating thermal decomposition incinerator inserts in the water sealed tank, and an airduct of first combustion chamber passes the air compartment that enters again under the rotary fire grate from the center of taper ash bucket, fall slag in ash bucket and the vertical once gap decline entry between pipe, be deposited to arc slag chute bottom, for this reason, require the water seal height of water sealed tank to be much higher than the low water seal requirement of general mucking machine, overcome the blast pipe blast, otherwise, air intake can run outward, under this condition of work, general mucking machine commonly used is structurally all inapplicable, satisfies vertical rotating thermal decomposition furnace bottom on the structure and slags tap, the structural requirement of air intake, this structure is because air intake blast height, the water sealed tank degree of depth that requirement is slagged tap is higher, and general hydraulic pressure push-plate type mucking machine can not satisfy.All the other are with embodiment 1.

Claims

1, a kind of vertical life refuse heat decomposition incinerator comprises the incinerator body, is hopper and adds feed bin that at incinerator body front end the rear end is a deslagging device; It is characterized in that: at hopper and add the feed bin front end feeding device is set; Described feeding device is a step-transit conveyor, mainly contains broach hopper, hopper, horizontal stepping plate, fluid pressure drive device and hot wind drying room and forms; The top of horizontal stepping plate connects broach hopper, and the below is provided with hot wind drying room; Horizontal stepping plate is driven by fluid pressure drive device, and step-by-step movement pushes discharging opening with rubbish.

2. vertical life refuse heat decomposition incinerator according to claim 1 is characterized in that: described hot wind drying room pipeline connects the flue gas air preheater in the incinerator body boiler back end ductwork, introduces the oven dry hot-air.

3. vertical life refuse heat decomposition incinerator according to claim 1 and 2 is characterized in that: described deslagging device, adopt the arm-type mucking machine of hydraulic pressure bucket; Its structure is that hawk is scraped in the setting of blast pipe bottom water sealing groove inner bottom part below grey slag bucket outlet, scrapes hawk and is driven by the arm-type jointed gear unit of bucket.