CN2777378Y

CN2777378Y - Double-drum rotary type waste sludge incinerator

Info

Publication number: CN2777378Y
Application number: CN 200520069538
Authority: CN
Inventors: 赵长富
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-02
Filing date: 2005-03-02
Publication date: 2006-05-03
Anticipated expiration: 2015-03-02

Abstract

The utility model relates to a double-drum rotary type sludge incineration kiln which belongs to the technical field of a rotary kiln. The utility model provides a double-drum rotary type sludge incineration kiln to solve the technical problem of low thermal efficiency, high treatment cost, high investment in fixed assets and difficult popularization and use. The utility model has the essential technology that a kiln body is a double-drum siamesed kiln body which is composed of an incineration kiln drum (9) and a drying kiln drum (10), and the inserting connecting position between the two drums is connected by a reverse sealing cover (11) and is respectively driven by a driving device (4); a kiln head is provided with a kiln door cover (8), the middle of the kiln door cover is provided with a coal injecting pipe (3), and a coal powder charging device (5), a coal powder storing tank (6) and a coal powder feeding device (7) are orderly connected with the coal injecting pipe; a blower (2) is arranged below the coal injecting pipe, and a kiln tail is arranged in a dust chamber (13) and is provided with a feed funnel (12). Compared with the existing incineration kiln, the utility model has the advantages of high thermal efficiency, low cost, less investment in fixed assets, simple structure and reliable operation, and is an ideal device for currently realizing innocuity, quantity reduction and resource treatment of municipal sludge.

Description

Bitubular revolution sludge incineration kiln

Technical field: the utility model relates to a kind of rotary kiln, particularly a kind of bitubular revolution sludge incineration kiln.

Background technology: municipal sewage treatment is the environmental issue that needs emphasis to solve that the our times various countries are faced, and sewage disposal institute sludge discharged because it contains a large amount of bacteriums, worm's ovum, heavy metal, organic matter etc., becomes big pollution sources in city again.Along with the progress of Chinese Urbanization, the increase of urban population, sewage treatment plant increases, national mud year generation reached more than 9,000,000 tons, and with the speed increase in year 10%.At present, state, inside and outside processing to mud generally adopt to concentrate, digestion, dehydration, mummification, effectively utilize different processing mode or methods of disposal such as (being mainly agricultural), landfill and burning.Wherein, utilizing the organic calorific capacity that mud itself contained to come dry, burning sludge, achieve innoxious, minimizing, recycling treatment, then is to one of Treatment of Sludge approach preferably.At present to mud burn, the equipment of sintering, be mainly fluid bed sludge incineration kiln, monotubular revolution incinerating kiln etc., but because it all is fuel with heavy oil, and its exhaust emissions temperature is all at 160-250 ℃, so its thermal efficiency is low, the processing cost height, investment in fixed assets is big, thereby is not easy to promote the use of.

Summary of the invention: technical problem to be solved in the utility model is: provide a kind of thermal efficiency height, processing cost is low, investment in fixed assets is less, the bitubular revolution sludge incineration kiln of being convenient to promote the use of.Its technical scheme is: a kind of bitubular revolution sludge incineration kiln, comprise kiln body and transmission device, it is characterized in that: described kiln body is the kiln body of incinerating kiln tube and dry kiln tube bitubular disjunctor, and splicing position is by reverse seal closure connection and respectively by the transmission device transmission between the bitubular; Kiln hood is provided with the wicket cover, and the centre of this wicket cover is provided with the coal powder injection pipe, connects successively on the coal powder injection pipe and feeds coal dust device, coal dust storage tank and coal dust charger, divides into air blast; The kiln tail places flue dust indoor and be provided with feed hopper.Its technique effect is: bitubular revolution sludge incineration kiln of the present utility model, owing to adopt double-cylinder type kiln body, and adopt separately independently transmission device, therefore, regulate the rotating speed separately of double-cylinder type kiln body, promptly can satisfy mud in requirement and the flow of material and the balance of hear rate in each stage of kiln body inner drying and burning, when mud after kiln tail feed hopper enters dry kiln, in 100-500 ℃ thermal current, its moisture boiling and evaporation constantly; Dried mud enters behind the incinerating kiln under combustion-supporting coal dust and sufficient air quantity, and the mud spontaneous combustion is under the rotation of kiln body, the sludge silt burning, and constantly roll, move forward, carry out exothermic oxidation reaction, the sludge silt of organic matter after-flame becomes the slag of low eutectic mixture, can make the building materials raw material.Compare with existing incinerating kiln, the utility model also has following advantage:

1, with the coal dust be fuel, than existing be that the incinerating kiln of fuel saves production cost with the fuel oil; And this kiln body is because of there being enough length, can satisfy mud preheating, drying and the space of burning and interim requirement, and its calorific value uses than fully, and hear rate is low.

2, the setting of bitubular kiln body can change rotating speed separately, satisfies the material balance and the hear rate balance of dry thing and burning slag, can bring into play the ability of mud spontaneous combustion to greatest extent.

3, this bitubular revolution sludge incineration kiln is simple in structure, reliable, and investment in fixed assets is few, is that current realization municipal sludge is innoxious, the more satisfactory equipment of minimizing, recycling treatment.

Description of drawings:

Fig. 1 is the utility model structural representation;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the B-B cutaway view of Fig. 1;

Fig. 4 is the C-C cutaway view of Fig. 1;

Fig. 5 is the transmission device connection diagram.

The specific embodiment:

As shown in Figure 1, this kiln body is the kiln body of incinerating kiln tube 9 and dry kiln tube 10 bitubular disjunctors.The stack shell of dry kiln tube (see figure 2) is that metal material is made, and its inner structure is: be welded with hook 101 in half section cavity, be hung with chain 102 on the hook; Be welded with lifting blade 103 (see figure 3)s in half section cavity in addition.The purpose that the interior segmentation of dry kiln tube is provided with chain and lifting blade is: the mud that will enter in the dry kiln tube is dispersed into graininess, to increase the contact area of its heat exchange, improves the intensity of water evaporates.The stack shell of incinerating kiln tube (see figure 4) is that metal material is made, and building in its cavity has refractory brick 91, to improve intensity fire-resistant in its cavity.Splicing position is connected by reverse seal closure 11 and respectively by transmission device 4 transmissions between dry kiln tube and the incinerating kiln tube.The transmission device (see figure 5) is made of pinion on motor 41, reductor 42 and the speed reducer output shaft 43 and the gear wheel 44 that is fixed on the kiln tube respectively.Motor drives pinion 43 after reductor slows down, transmission is fixed on the gear wheel 44 on the kiln tube, thereby the kiln tube is rotated.Kiln hood is provided with wicket cover 8, and the centre of this wicket cover is provided with coal powder injection pipe 3, connects successively on the coal powder injection pipe and feeds coal dust device 5, coal dust storage tank 6 and coal dust charger 7, divides into air blast 2.The kiln tail places in the flue dust chamber 13 and is provided with feed hopper 12.

Claims

1, a kind of bitubular revolution sludge incineration kiln, comprise kiln body and transmission device, it is characterized in that: described kiln body is the kiln body of incinerating kiln tube (9) and dry kiln tube (10) bitubular disjunctor, and splicing position is by reverse seal closure (11) connection and respectively by transmission device (4) transmission between the bitubular; Kiln hood is provided with wicket cover (8), and the centre of this wicket cover is provided with coal powder injection pipe (3), connects successively on the coal powder injection pipe and feeds coal dust device (5), coal dust storage tank (6) and coal dust charger (7), divides into air blast (2); The kiln tail places in the flue dust chamber (13) and is provided with feed hopper (12).

2, a kind of bitubular revolution sludge incineration kiln according to claim 1, it is characterized in that: the stack shell of described dry kiln tube (10) is a metal material, and its inner structure is: be welded with hook (101) in half section cavity, be hung with chain (102) on the hook; Be welded with lifting blade (103) in half section cavity in addition.