CN203772034U

CN203772034U - Novel flue waste heat recycling system

Info

Publication number: CN203772034U
Application number: CN201420162611.1U
Authority: CN
Inventors: 李连华; 苏伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-04
Filing date: 2014-04-04
Publication date: 2014-08-13
Anticipated expiration: 2024-04-04

Abstract

The utility model relates to a novel flue waste heat recycling system. Existing rotary kilns need to be improved in the aspect of energy conservation. Thus, the novel flue waste heat recycling system comprises a kiln head, a kiln tail and a kiln body which are connected in sequence, wherein the kiln head and the kiln tail are respectively provided with a waste heat boiler, the waste heat boilers are connected with the kiln head and the kiln tail through flues respectively, a water-cooling coil is arranged on the inner wall of each flue, each water-cooling coil penetrates through the wall of the corresponding flue through an outlet of the flue to enter the flue, extends in the flue in a spiral mode to an inlet of the flue, and then penetrates out of the wall of the flue, an inlet of each water-cooling coil is connected with a softened water processing device, and an outlet of each water-cooling coil is connected with a steam-water separator. The novel flue waste heat recycling system has the advantages of being simple in structure, scientific in design and capable of saving energy and protecting the environment. Cement produced through the system is high in strength grade. The novel flue waste heat recycling system is widely applied to various cement rotary kilns and is an essential tool for a cement enterprise to save energy and dig the potential.

Description

Novel flue residual neat recovering system

Technical field

The utility model relates to a kind of novel flue residual neat recovering system.

Background technology

The kiln hood of existing rotary kiln, kiln tail are all provided with waste heat boiler, utilize the high-temperature residual heat gas of kiln hood, kiln tail to produce steam, and further generating can recovery section heat, but still the place having much room for improvement.

Utility model content

The technical problems to be solved in the utility model is how further to improve heat recovery efficiency, the chilling speed of existing revolving cement kiln and improve equipment life, and a kind of novel flue residual neat recovering system is provided.

For solving the problems of the technologies described above, this novel flue residual neat recovering system comprises kiln hood, kiln tail and the kiln body connecting in turn, and kiln hood and kiln tail are furnished with respectively waste heat boiler, between waste heat boiler and kiln hood, kiln tail, by flue, be connected respectively, described flue inwall is provided with water-cooled coil pipe, this water-cooled coil pipe enters in flue through walling of flue from flue outlet, in flue inside turn, extend to after flue entrance, from walling of flue, pass, aqueous cold plate tube inlet connects demineralized water treating apparatus, and the outlet of water-cooled coil pipe connects steam-water separator.So design, is no longer coated with fire-resistant pouring material in flue, and water-cooled coil pipe can effectively reduce flue temperature, and the heat of high-temperature flue gas is passed to the water of internal flow, produces steam or hot water, can be used for heating or generating, and recuperation of heat effect is fine.

The external heat-absorbing shield that is provided with of described kiln, this heat-absorbing shield is divided into upper cover and lower cover, is equipped with one and curves reciprocal heat absorption coil pipe from bottom to top along kiln body, the in parallel or series connection of two heat absorption coil pipes on the inner surface of the upper and lower cover of inner surface of upper cover, and all do not contact kiln body, after upper cover, lower cover fasten, forming outer tube, is air-cooled passage between outer tube and kiln body, and this air-cooled passage one end is positioned at kiln hood place, for air inlet, the other end is positioned at kiln tail place, be air outlet, and air outlet place is provided with induced-draught fan.Like this, can fully reclaim kiln body waste heat.

Article two, the equal semicircular in shape of the projection of heat absorption coil pipe on the vertical section of kiln body, and the spacing between the two and kiln body all remains between 50-100mm.Kiln hood is furnished with kiln head boiler, and kiln tail is furnished with waste heat boiler, so design, and endothermic effect is good, and easy accessibility.

This novel flue residual neat recovering system has simple in structure, design science, and the advantage of energy-conserving and environment-protective, water produced mud label is high, and intensity is large, is widely used in various cement rotary kilns, is the energy-conservation indispensable weapon of taping the latent power of cement production enterprise.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, this novel flue residual neat recovering system is described further:

Fig. 1 is the structural representation of this novel flue residual neat recovering system embodiment one;

Fig. 2 is the schematic flow sheet of this novel flue residual neat recovering system embodiment two;

Fig. 3 is the positional structure schematic diagram of kiln body, upper cover and lower cover;

Fig. 4 is the explosive view of Fig. 3.

In figure: 1 be kiln hood, 2 for kiln tail, 3 is for kiln body, 4 is for waste heat boiler, 5 is for flue, 6 is for water-cooled coil pipe, 7 is for demineralized water treating apparatus, 8 is for steam-water separator, 9 is for heat-absorbing shield, 91 is for upper cover, 92 is for lower cover, 10 for heat absorption coil pipe, 11 be air-cooled passage, 12 for induced-draught fan, 13 for steam turbine generator, 14 be pump.

The specific embodiment

Embodiment one: as Fig. 1, 3, shown in 4, this novel flue residual neat recovering system comprises the kiln hood 1 connecting in turn, kiln tail 2 and kiln body 3, and kiln hood 1 and kiln tail 2 are furnished with respectively waste heat boiler 4, waste heat boiler 4 and kiln hood 1, between kiln tail 2, by flue 5, be connected respectively, described flue 5 inwalls are provided with water-cooled coil pipe 6, this water-cooled coil pipe 6 enters in flue 5 from flue 5 outlets through walling of flue, in flue 5 inside turns, extend to after flue 5 entrances, from walling of flue, pass, water-cooled coil pipe 6 entrances connect demineralized water treating apparatus 7, the outlet of water-cooled coil pipe connects steam-water separator 8, water-cooled coil pipe 6 is exposed in flue 5.Waste heat boiler 4 is also furnished with induced-draught fan 12.

The outer heat-absorbing shield 9 that is provided with of described kiln body 3, this heat-absorbing shield 9 is divided into upper cover 91 and lower cover 92, on the inner surface of the upper and lower cover 92 of inner surface of upper cover 91, be equipped with one and curve reciprocal heat absorption coil pipe 10 from bottom to top along kiln body 3, article two, heat absorption coil pipe 10 parallel connections, and all do not contact kiln body 3, upper cover 91, lower cover 92 form outer tube after fastening, it between outer tube and kiln body 3, is air-cooled passage 11, these air-cooled passage 11 one end are positioned at kiln hood place, for air inlet, the other end is positioned at kiln tail place, be air outlet, and air outlet place is provided with induced-draught fan 12.

Article two, the equal semicircular in shape of the projection of heat absorption coil pipe 10 on the vertical section of kiln body 3, and the spacing between the two and kiln body 3 all remains between 50-100mm.

Article two, after 10 parallel connections of heat absorption coil pipe, a termination demineralized water treating apparatus, the other end connects steam-water separator 8 and steam turbine generator 13 in turn.

Embodiment two: as shown in Fig. 1,3,4, two heat absorption coil pipe 12 series connection, all the other structures are as described in embodiment 1.

The above-mentioned specific embodiment is only concrete case of the present utility model; scope of patent protection of the present utility model includes but not limited to the above-mentioned specific embodiment, and any equipment meeting described in the utility model claims all falls into scope of patent protection of the present utility model.

Claims

1. a novel flue residual neat recovering system, it is characterized in that: comprise the kiln hood, kiln tail and the kiln body that connect in turn, and kiln hood and kiln tail are furnished with respectively waste heat boiler, between waste heat boiler and kiln hood, kiln tail, by flue, be connected respectively, described flue inwall is provided with water-cooled coil pipe, this water-cooled coil pipe enters in flue through walling of flue from flue outlet, in flue inside turn, extend to after flue entrance, from walling of flue, pass, aqueous cold plate tube inlet connects demineralized water treating apparatus, and the outlet of water-cooled coil pipe connects steam-water separator.

2. novel flue residual neat recovering system as claimed in claim 1, it is characterized in that: the external heat-absorbing shield that is provided with of described kiln, this heat-absorbing shield is divided into upper cover and lower cover, on the inner surface of the upper and lower cover of inner surface of upper cover, be equipped with one and curve reciprocal heat absorption coil pipe from bottom to top along kiln body, article two, the parallel connection of heat absorption coil pipe or series connection, and all do not contact kiln body, upper cover, after fastening, lower cover forms outer tube, between outer tube and kiln body, it is air-cooled passage, this air-cooled passage one end is positioned at kiln hood place, for air inlet, the other end is positioned at kiln tail place, for air outlet, and air outlet place is provided with induced-draught fan.

3. novel flue residual neat recovering system as claimed in claim 2, is characterized in that: two heat absorption coil pipes equal semicircular in shape of projection on the vertical section of kiln body, and the spacing between the two and kiln body all remains between 50-100mm.