CN2441031Y - Cylinder garbage incinerator - Google Patents

Abstract

The utility model relates to a cylinder garbage incinerator, belonging to a garbage incineration device used in the solid garbage treatment technology. The utility model is characterized in that a plurality of grooves are uniformly distributed on a cylinder along a radial direction; a primary air port is arranged on each groove; both ends of the cylinder are provided with air boxes; the design of the combustion chamber accords with the combustion of garbage with high water content; the combustion chamber is not provided with a front arch; simultaneously, an included angle of a back arch of the combustion chamber and a horizontal direction is less than an included angle of a grate and the horizontal direction. In this way, the stirring ability for the garbage of the grate can be effectively enhanced; the air supplying quantity can be conveniently adjusted; simultaneously, preheating processes can be added, so that the radiation effect is enhanced. Therefore, the incinerator can carry out drying and preheating for the garbage, causing that the combustion of the garbage is sufficient; the cost for incinerating the garbage can be effectively reduced.

Description

A kind of drum-type incinerator

The utility model relates to a kind of combustion apparatus, particularly employed a kind of drum-type incinerator in the solid waste treating technology.

The incinerator combustion system that prior art has come into operation mainly contains following several: mechanical type grate incinerator, circulating fluidized bed type incinerator and rotary kiln type incinerator.The mechanical type fire grate can be divided into drum grate, Martin's fire grate, western Gus's fire grate, " W " type fire grate etc. again.The characteristics of drum grate are: because fire grate is in the low temperature load, can be designed to non-alloy material, have wear-resistingly, heat-resisting, keep in repair characteristics such as very convenient.Obstruction, criminal's card and the fire grate of also seldom causing in service damages phenomenon, and be reliable and stable; But again owing to the rotating speed of every series cylinder with to the equal independent regulation of air quantity, so control mode is flexible.But generally there is big defective in this kind type of furnace on the structure of its cylinder and combustion chamber, do not take into full account the characteristics such as preheating, oven dry and burning that adapt to high-moisture rubbish, and for example primary air nozzle is designed to narrow annular channel on cylinder, and is relatively poor to the stirring effect of rubbish; Its combustion chamber is provided with face arch, influences the preheating flow process of rubbish, and the existing in a word type of furnace needs to do further improvement on the structure of cylinder and combustion chamber, be beneficial to the abundant burning of rubbish.

Deficiency and defective at the prior art existence, the purpose of this utility model and task are on the basis of existing drum grate formula incinerator, fully take into account high moisture content incineration firing demand and characteristics thereof, the structure of cylinder and combustion chamber is done further improvement, make it can fully carry out preheating, oven dry to rubbish, thereby it is fully burnt, effectively reduce the cost of waste incineration.

The purpose of this utility model and task are achieved through the following technical solutions: a kind of drum grate formula incinerator, parts such as the combustion chamber that it mainly surrounds by charging gear, drum-type grate, by chimney arch and side wall, secondary furnace, auxiliary burner, air preheater are formed, described fire grate is made up of some cylinders, this fire grate is in tilted layout, cylinder is divided into some groups, every group drives respectively, it is characterized in that each cylinder is an air compartment, radially uniform a plurality of transverse concave grooves on cylinder, its primary air nozzle is arranged on the groove.

In order to stablize blast pressure, be convenient to regulate air output, be provided with the bellows of outstanding cylinder body at the cylinder two ends.

On the basis of such scheme, for simplified structure, increase the preheating flow process, face arch is not established in the combustion chamber, is surrounded by rear arch, side wall and fire grate.In order to strengthen the radiation of rear arch to the fire grate burning-out zone, help pushing flue gas to the place ahead simultaneously, the angle of combustion chamber rear arch and horizontal direction should be less than the angle of fire grate and horizontal direction.

Accompanying drawing 1 is an overall structure schematic diagram of the present utility model.

Accompanying drawing 2 is single roller frame schematic diagram.

Accompanying drawing 3 is cylinder combination structural representation.

Among the figure: the 1-charging gear; The 2-rolling fire grate; The 3-cylinder; The 4-combustion chamber; The 5-primary air nozzle; The 6-slag-drip opening; The 7-auxiliary burner; The 8-secondary furnace; The 9-furnace wall; The 10-overfiren air port; The 11-chimney arch; The 12-heat reclamation device; The 13-air preheater; The 14-deduster; 15-decontamination device; The 16-air-introduced machine; The 17-chimney; Air channel of 18-; The 19-labyrinth seal; The 20-sliding bearing; The 21-bellows; The 22-sliding bearing; The 23-driving crank; The 24-groove.

Describe concrete structure of the present utility model and preferred forms in detail below in conjunction with accompanying drawing: parts such as the combustion chamber 4 that this incinerator mainly surrounds by charging gear 1, drum-type grate 2, by chimney arch 11 and furnace wall 9, secondary furnace 8, auxiliary burner 7, air preheater 13 are formed, described fire grate is made up of some cylinders and a wind, this fire grate is in tilted layout, cylinder is divided into some groups, every group drives respectively, each cylinder 3 is an air compartment, radially uniform a plurality of transverse concave grooves 24 on cylinder, its primary air nozzle 5 is arranged on the groove.

Rubbish enters the combustion chamber by charging gear 1 through rolling fire grate 2, the flue gas that blows from the combustion chamber adverse current, the radiation of chimney arch and drying garbage is heated up from the hot-air of cylinder primary air nozzle ejection, dried rubbish with after a wind mixes on fire grate suitable position burn.At uniform in the radial direction a plurality of grooves 24 of cylinder, this groove has stirring effect well to rubbish, can make better preheating of rubbish and drying on the cylinder, thus fully burning; Be furnished with primary air nozzle 5 on the groove 24 of cylinder, the air feed direction feeds direction along fuel, prevents the air port obstruction.Because the calorific value of rubbish is low, calorific value itself that depend merely on is difficult to abundant after-flame, even perhaps burning, ignition temperature is low, easily produces hypertoxic harmful substance (such as dioxin etc.), thereby be furnished with auxiliary burner 7 above chimney arch and secondary furnace.The input of auxiliary fuel can guarantee that the rubbish that no matter burns which kind of calorific value can both keep normal ignition temperature, makes the rubbish after-flame, reduces the discharging of pollutants such as CO, NO, CH compound.Auxiliary fuel can be coal gas, oil, even can be coal dust.Use coal dust to do the economy that auxiliary fuel can the operation of raising system.In combustion chamber and secondary furnace, do not arrange heating surface (being the furnace wall thermal insulation), so that keep the high temperature (800～900 ℃) in combustion chamber and the secondary furnace.Incinerator to flow through shaft in arrange heat reclamation device 12, with the heat recovery after the burning, can for produce, life utilizes.Arrange air preheater 13 behind heat exchanger, the overfiren air port of the air after the preheating on the primary air nozzle on the cylinder and chimney arch and secondary furnace sprays into burner hearth, effectively smooth combustion of preheating of air.Be deduster 14 behind the air preheater, arrange decontamination device 15 behind the deduster, flue gas after being purified enters chimney 17 through air-introduced machine 16.

Fire grate is made up of some cylinders 3, is in tilted layout; Per 2～3 cylinders are divided into one group, drive respectively.Each cylinder all has hot-flow flue 18 to be attached thereto.Pivoting friction between air channel and cylinder partly adopts labyrinth seal 19, and the sliding bearing 20,22 of cylinder is embedded in the furnace wall 9, and crank 23 drives cylinder and rotates.

Fire grate divides some groups, and the line of each group axle is according to the characteristics of rubbish characteristics and combustion chamber, can be designed to parallel (axis that is cylinder can be in a plane) and also can be designed to not parallel.Cylinder separately-driven one big advantage is to control the translational speed of rubbish at the fire grate different parts.Each cylinder is an air compartment, and empty bellows 21 in the outstanding cylinder body in cylinder two ends forms its objective is in order to stablize blast pressure, are convenient to regulate air output.

Combustion chamber 4 is surrounded by rear arch 11 furnace walls 9 and fire grate 2.Consider that the rubbish water content is many, the preheating long flow path so do not establish face arch, so also simplifies the structure.Rear arch 11 should be less than fire grate and horizontal direction angle β with horizontal direction angle α in addition, and this structure can be strengthened the radiation of rear arch to the fire grate burning-out zone, and pushes flue gas to fire grate the place ahead, more help adverse current and flue gas to the desiccation of rubbish.

The utility model is compared with existing cylinder garbage incinerator, has the following advantages and beneficial effect: this rubbish Incinerator is owing to be provided with groove at cylinder, and at the cylinder two ends air compartment is set, and like this, both effectively strengthened fire grate To the rubbish agitation capability, also be convenient to regulate air output, the stable feeding wind pressure is conducive to drying and the preheating of rubbish; Take into full account the burning feature of high moisture content rubbish in the design of combustion chamber, made it increase the preheating flow process, strengthened spoke Penetrate effect, thereby make this incinerator combustion efficiency good, effectively reduce the cost of waste incineration, have preferably Application and popularization value.

Claims (3)

1, a kind of drum-type incinerator, parts such as the combustion chamber that it mainly surrounds by charging gear, drum-type grate, by chimney arch and side wall, secondary furnace, auxiliary burner, air preheater are formed, described fire grate is made up of some cylinders and primary air nozzle, this fire grate is in tilted layout, cylinder is divided into some groups, and every group drives respectively, it is characterized in that each cylinder is an air compartment, radially uniform a plurality of transverse concave grooves on cylinder, its primary air nozzle is arranged on the groove.

2, according to as right 1 described drum-type incinerator, it is characterized in that being provided with bellows at the cylinder two ends.

3, according to claim 1 or 2 described drum-type incinerators, it is characterized in that described combustion chamber is to be surrounded by rear arch, side wall and fire grate, the angle of its rear arch and horizontal direction is less than the angle of fire grate and horizontal direction.

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