CN208983840U - A kind of rotary kiln waste heat boiler - Google Patents

Abstract

The utility model discloses rotary kiln boiler bodies, the left end of the rotary kiln boiler body is equipped with rotary kiln smoke inlet, the right end of the rotary kiln boiler body is equipped with outlet flue, the bending tubes end of the smoke inlet is connected with cold smoke room, and the described one end of cold smoke room far from the smoke inlet is from left to right successively arranged water-cooling wall, the first superheater, the second superheater, convective region and economizer.The utility model has the advantages that making the dust particle in flue gas be no longer on molten by increasing the water cooling screen-wall heat area, being not easy on the tube wall for being adhered to junior's (superheater)；Superheater can guarantee to reduce flue gas resistance to the greatest extent under the premise of outlet steam temperature, pull open lateral tube spacing, take into account abrasionproof and accumulatingdust；In addition, the arrangement of the convection current beam tube and the economizer, can be such that flue-gas temperature flow direction of flue gas along the rotary kiln boiler body gradually reduces, accumulatingdust reduces resistance, as far as possible reduction exhaust gas temperature, obtains high benefit.

Description

A kind of rotary kiln waste heat boiler

Technical field

The utility model relates to boiler technology field more particularly to a kind of rotary kiln waste heat boilers.

Background technique

Rotary kiln refers to rotary calcining kiln (being commonly called as rotary kiln), belongs to building equipment class.Rotary kiln can by processing material difference It is divided into cement kiln, chemical metallurgy kiln and limekiln.Cement kiln is mainly used for calcination of cement clinker, divides dry production cement kiln and wet Method produces cement kiln two major classes.

Existing each heating surface arrangement of rotary kiln boiler is distributed and unreasonable structure, when flue-gas temperature is unstable, overheat There is overtemperature to burn out when device, meanwhile, superheater, convection current tube bundle, economizer surface have dust, dust stratification, stifled ash, cause local cigarette Gas velocity is excessively high, and each heating surface wear is fast, and leakage, pipe explosion accident are frequent, seriously affects safe operation of the boiler；In addition, smoke evacuation temperature The former design of degree is higher, in addition the influence of above-mentioned factor, heat exchange is degrading, and design requirement, boiler thermal effect is not achieved in steam production Rate is greatly lowered, and causes exhaust gas temperature higher, also makes rear class flue gas electrostatic precipitator degrading, flue gas emission is exceeded, and shape At vicious circle.For many years, maintenance, more exchange device are frequent, and kiln start-stop stops.

Utility model content

For the problems in the relevant technologies, the utility model proposes a kind of rotary kiln waste heat boilers, to overcome existing correlation Above-mentioned technical problem present in technology.

The technical solution of the utility model is achieved in that

The left end of a kind of rotary kiln waste heat boiler, including rotary kiln boiler body, the rotary kiln boiler body is equipped with back Rotary kiln kiln tail smoke inlet, the right end of the rotary kiln boiler body are equipped with outlet flue, the bending tubes end of the smoke inlet and cold smoke room It is connected, the described one end of cold smoke room far from the smoke inlet is from left to right successively arranged water-cooling wall, the first superheater, the second mistake Hot device, convective region and economizer, are equipped with radiation waste heat feed pipe at the top of the rotary kiln boiler body, the economizer with The heating surface of the feed pipe is in contact, and is equipped with drum above the rotary kiln boiler body.

Further, the top side of the drum, which is equipped with, introduces pipe, and the bottom of the drum is equipped with the first fairlead, institute It states and is connected between the first fairlead and the introducing pipe by the water-cooling wall.

Further, first superheater and second superheater are serpentine structure, the top of the drum Portion is connected by circulation pipe with one end of second superheater, the one end of second superheater far from the circulation pipe with First superheater is connected, and first superheater runs through the rotary kiln pot far from one end of second superheater The top of furnace body is simultaneously connected to overheated steam pipe.

Further, the bottom of the drum is equipped with the second fairlead, and second fairlead runs through the rotary kiln pot The top of furnace body simultaneously extends in the convective region.

Further, several convection current beam tubes are installed, the convection current beam tube passes through steam pipe and institute in the convective region Drum is stated to be connected.

Further, the bottom of the rotary kiln boiler body is provided with several brick baffles equidistantly arranged, it is described every The bottom of cigarette wall is provided with ash discharge machine for zipper.

Further, the ash discharge machine for zipper is connected with ash discharge screw conveyor.

Further, the inside steam drum is connected to by return pipe in the feed pipe.

The beneficial effects of the utility model are: made after the water-cooling wall by increasing the water cooling screen-wall heat area, Flue-gas temperature can drop to 650 DEG C or so, and the dust particle in flue gas is made to be no longer on molten, be not easy to be adhered to junior's (overheat Device) tube wall on；Superheater can guarantee to reduce flue gas resistance to the greatest extent under the premise of outlet steam temperature, pull open between transverse pipe Away from taking into account abrasionproof and accumulatingdust；In addition, the arrangement of the convection current beam tube and the economizer, can make flue-gas temperature described in The flow direction of flue gas gradually reduces in rotary kiln boiler body, accumulatingdust, reduces resistance, as far as possible reduction exhaust gas temperature, obtains The convection current beam tube is changed to in-line by stagger arrangement by high benefit, more some heating surfaces of arrangement in longitudinal space, exhaust gas temperature It reduces, substantially improves the operating condition of air-introduced machine and rear class electrostatic precipitator.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this A little attached drawings obtain other attached drawings.

Fig. 1 is a kind of structural schematic diagram of rotary kiln waste heat boiler.

In figure:

1, rotary kiln boiler body；2, smoke inlet；3, cold smoke room；4, water-cooling wall；5, the first superheater；6, the second overheat Device；8, brick baffle；9, the second fairlead；10, convective region；11, ash discharge machine for zipper；12, outlet flue；13, economizer；14, water supply Pipe；15, return pipe；16, steam pipe；17, drum；18, circulation pipe；19, the first fairlead；20, pipe is introduced；21, superheated steam Pipe；22, ash discharge screw conveyor；23, convection current beam tube.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.

In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right", The orientation or positional relationship of the instructions such as "top", "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

Embodiment according to the present utility model provides a kind of rotary kiln waste heat boiler.

Referring to Fig.1, described according to the rotary kiln waste heat boiler of the utility model embodiment, including rotary kiln boiler body 1 The left end of rotary kiln boiler body 1 is equipped with rotary kiln smoke inlet 2, and the right end of the rotary kiln boiler body 1 is equipped with smoke Mouthfuls 12, the bending tubes end of the smoke inlet 2 is connected with cold smoke room 3, and the one end of the cold smoke room 3 far from the smoke inlet 2 is from a left side Water-cooling wall 4, the first superheater 5, the second superheater 6, convective region 10 and economizer 13, the rotary kiln boiler are successively arranged to the right side The top of ontology 1 is equipped with radiation waste heat feed pipe 14, and the economizer 13 is in contact with the heating surface of the feed pipe 14, institute The top for stating rotary kiln boiler body 1 is equipped with drum 17.

In one embodiment, the top side of the drum 17, which is equipped with, introduces pipe 20, and the bottom of the drum 17 is equipped with First fairlead 19 is connected between first fairlead 19 and the introducing pipe 20 by the water-cooling wall 4.

In one embodiment, first superheater 5 and second superheater 6 are serpentine structure, described The top of drum 17 is connected by circulation pipe 18 with one end of second superheater 6, and second superheater 6 is far from described One end of circulation pipe 18 is connected with first superheater 5, and first superheater 5 is far from second superheater 6 One end runs through the top of the rotary kiln boiler body 1 and is connected to overheated steam pipe 21.

In one embodiment, the bottom of the drum 17 is equipped with the second fairlead 9, and second fairlead 9 runs through institute It states the top of rotary kiln boiler body 1 and extends in the convective region 10.

In one embodiment, several convection current beam tubes 23 are installed, the convection current beam tube 23 is logical in the convective region 10 Steam pipe 16 is crossed to be connected with the drum 17.

In one embodiment, the bottom of the rotary kiln boiler body 1 is provided with several brick baffles equidistantly arranged 8, the bottom of the brick baffle 8 is provided with ash discharge machine for zipper 11.

In one embodiment, the ash discharge machine for zipper 11 is connected with ash discharge screw conveyor 22.

In one embodiment, it is connected to inside the drum 17 in the feed pipe 14 by return pipe 15.

In conclusion by means of the above-mentioned technical proposal of the utility model, including rotary kiln boiler body 1, the revolution The left end of kiln boiler body 1 is equipped with rotary kiln smoke inlet 2, and the right end of the rotary kiln boiler body 1 is equipped with outlet flue 12, The bending tubes end of the smoke inlet 2 is connected with cold smoke room 3, the one end of the cold smoke room 3 far from the smoke inlet 2 from left to right according to It is secondary to be equipped with water-cooling wall 4, the first superheater 5, the second superheater 6, convective region 10 and economizer 13, the rotary kiln boiler body 1 Top radiation waste heat feed pipe 14 is installed, the economizer 13 is in contact with the heating surface of the feed pipe 14, described time The top of rotary kiln boiler body 1 is equipped with drum 17.

The utility model has the beneficial effects that being made after the water-cooling wall 4, cigarette by increasing by 4 heat area of water-cooling wall Temperature degree can drop to 650 DEG C or so, and the dust particle in flue gas is made to be no longer on molten, be not easy to be adhered to junior (superheater) Tube wall on；Superheater can guarantee to reduce flue gas resistance to the greatest extent under the premise of outlet steam temperature, pull open lateral tube spacing, simultaneous Care for abrasionproof and accumulatingdust；In addition, the arrangement of the convection current beam tube 23 and the economizer 13, can be such that flue-gas temperature returns along described The flow direction of flue gas gradually reduces in rotary kiln boiler body 1, accumulatingdust, reduces resistance, as far as possible reduction exhaust gas temperature, obtains high Benefit, the convection current beam tube 23 is changed to in-line by stagger arrangement, heating surface, the drop of exhaust gas temperature can be increased in longitudinal space It is low, substantially improve the operating condition of air-introduced machine and rear class electrostatic precipitator.

The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model Within enclosing.

Claims (8)

1. a kind of rotary kiln waste heat boiler, which is characterized in that including rotary kiln boiler body (1), the rotary kiln boiler body (1) left end is equipped with rotary kiln smoke inlet (2), and the right end of the rotary kiln boiler body (1) is equipped with outlet flue (12), institute The bending tubes end for stating smoke inlet (2) is connected with cold smoke room (3), and the one end of the cold smoke room (3) far from the smoke inlet (2) is from a left side It is successively arranged water-cooling wall (4), the first superheater (5), the second superheater (6), convective region (10) and economizer (13) to the right side, it is described Radiation waste heat feed pipe (14), the economizer (13) and the feed pipe are installed at the top of rotary kiln boiler body (1) (14) heating surface is in contact, and is equipped with drum (17) above the rotary kiln boiler body (1).

2. a kind of rotary kiln waste heat boiler according to claim 1, which is characterized in that the top side of the drum (17) Manage (20) equipped with introducing, the bottom of the drum (17) is equipped with the first fairlead (19), first fairlead (19) with it is described It introduces between pipe (20) and is connected by the water-cooling wall (4).

3. a kind of rotary kiln waste heat boiler according to claim 1, which is characterized in that first superheater (5) and institute Stating the second superheater (6) is serpentine structure, and the top of the drum (17) passes through circulation pipe (18) and second mistake One end of hot device (6) is connected, second superheater (6) one end and first superheater far from the circulation pipe (18) (5) it is connected, and first superheater (5) runs through the rotary kiln boiler sheet far from one end of second superheater (6) The top of body (1) is simultaneously connected to overheated steam pipe (21).

4. a kind of rotary kiln waste heat boiler according to claim 1, which is characterized in that the bottom of the drum (17) is equipped with Second fairlead (9), second fairlead (9) through the rotary kiln boiler body (1) top and extend to it is described right It flows in area (10).

5. a kind of rotary kiln waste heat boiler according to claim 1 or 4, which is characterized in that peace in the convective region (10) Equipped with several convection current beam tubes (23), the convection current beam tube (23) is connected by steam pipe (16) with the drum (17).

6. a kind of rotary kiln waste heat boiler according to claim 1, which is characterized in that the rotary kiln boiler body (1) Bottom be provided with several brick baffles (8) equidistantly arranged, the bottom of the brick baffle (8) is provided with ash discharge machine for zipper (11)。

7. a kind of rotary kiln waste heat boiler according to claim 6, which is characterized in that the ash discharge machine for zipper (11) with go out Grey screw conveyor (22) is connected.

8. a kind of rotary kiln waste heat boiler according to claim 1, which is characterized in that pass through back in the feed pipe (14) It is internal that flow tube (15) is connected to the drum (17).