Superheating system with waste incineration waste heat boiler superheaters arranged side by side

Abstract

The utility model provides a superheating system with waste incineration waste heat boiler superheaters arranged side by side, and belongs to the field of waste incineration power generation. The problems that due to the arrangement of an existing superheater and an existing reheater, the total length of the boiler is increased, the occupied area is increased, and the equipment and construction cost is greatly improved are solved. The system comprises a front superheater set and a low-temperature superheater which are sequentially arranged in the flue gas direction, the front superheater set comprises a high-temperature superheater and a medium-temperature superheater, and the high-temperature superheater and the medium-temperature superheater are arranged side by side in the direction perpendicular to the flue gas direction. The device is mainly used for waste incineration power generation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of garbage incineration, especially relates to a superheating system of garbage incineration waste heat boiler superheater side -by -side arrangement. BACKGROUND

[0002] The tail flue of the furnace outlet of the garbage incineration boiler each stage superheater is generally arranged in sequence along the flue gas direction, just the arrangement order of each stage superheater is adjusted, for example, is arranged in sequence according to high-temperature superheater, medium-temperature superheater, low-temperature superheater, or is arranged in sequence according to medium-temperature superheater, high-temperature superheater, low-temperature superheater, but each stage superheater is arranged in sequence along the flue gas direction.With the improvement of the steam parameter of boiler, the space requirement of superheater and reheater arrangement increases, and the length of the tail flue of the convection heating surface of the arrangement superheater etc. will be further lengthened, causing the total length of the boiler to increase, the floor area to increase, and the equipment and construction cost to increase substantially. CONTENT

[0003] Therefore, the utility model aims at providing a superheating system of garbage incineration waste heat boiler superheater side -by -side arrangement to solve the problems that the setting of the convection heating surface of the existing superheater etc. causes the total length of the boiler to increase, the floor area to increase, and the equipment and construction cost to increase substantially.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a superheating system of garbage incineration waste heat boiler superheater side -by -side arrangement, it includes the front -mounted superheater group and low-temperature superheater arranged in sequence along the flue gas direction, the front -mounted superheater group includes high-temperature superheater and medium-temperature superheater, the high-temperature superheater and medium-temperature superheater are side -by -side arranged along the perpendicular to the flue gas direction.

[0005] Further, the front -mounted superheater and low-temperature superheater are arranged in the tail flue of the furnace outlet.

[0006] Further, the high-temperature superheater, medium-temperature superheater and low-temperature superheater are all light tube structures.

[0007] Further, the medium-temperature superheater and low-temperature superheater are both arranged in sequence and counterflow.

[0008] Further, the high-temperature superheater is arranged in sequence and flow.

[0009] Further, the tube row pitch of the high-temperature superheater and medium-temperature superheater is greater than or equal to 200mm.

[0010] Further, a water spray temperature reducing device is arranged between the high-temperature superheater and medium-temperature superheater.

[0011] Further, a water spray temperature reducing device is arranged between the medium-temperature superheater and low-temperature superheater.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1. The utility model provides a kind of waste incineration waste heat boiler superheater side-by-side arrangement's superheating system, by high temperature superheater and medium temperature superheater are along the direction of perpendicular to flue gas side-by-side arrangement, reduce the number of heating surface arrangement group, shorten the overall length of boiler, with the advantages of simple arrangement structure, compact overall structure;

[0014] 2. The utility model provides a kind of waste incineration waste heat boiler superheater side-by-side arrangement's superheating system, by high temperature superheater and medium temperature superheater are along the direction of perpendicular to flue gas side-by-side arrangement, effectively improve the temperature and pressure of high temperature superheater and medium temperature superheater, improve heat exchange efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings that constitute part of the utility model are used to provide further understanding of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation on the utility model.In the drawings:

[0016] Fig. 1 For the structure diagram of a kind of waste incineration waste heat boiler superheater side-by-side arrangement's superheating system described in the utility model;

[0017] Fig. 2 For the main view schematic diagram of a kind of waste incineration waste heat boiler superheater side-by-side arrangement's superheating system described in the utility model.

[0018] 1-high temperature superheater, 2-medium temperature superheater, 3-low temperature superheater, 4-water spray temperature reducing device, 5-furnace, 6-tail flue, 7-preposed superheater group. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model.It should be noted that the embodiment in the utility model and the features in the embodiment can be combined mutually in the case where there is no conflict, and the described embodiment is only a part of the embodiment of the utility model, not all the embodiment.

[0020] Reference Figs. 1-2The embodiment is illustrated as a waste incineration waste heat boiler superheater parallel arrangement superheating system, which comprises a front superheater group 7 and a low-temperature superheater 3 arranged in sequence along the flue gas direction, the front superheater group 7 and the low-temperature superheater 3 are arranged in the back pass 6 at the outlet of the furnace 5, the front superheater group 7 comprises a high-temperature superheater 1 and a medium-temperature superheater 2, and the high-temperature superheater 1 and the medium-temperature superheater 2 are arranged in parallel along the direction perpendicular to the flue gas, in this embodiment, by arranging the high-temperature superheater 1 and the medium-temperature superheater 2 in parallel along the direction perpendicular to the flue gas, the number of heating surface arrangement groups is reduced, the overall length of the boiler is shortened, and the temperature and pressure of the high-temperature superheater 1 and the medium-temperature superheater 2 are effectively improved, the heat exchange efficiency is improved, and the advantages of simple arrangement structure, good heat exchange effect and compact overall structure are achieved.

[0021] In the embodiment, the high-temperature superheater 1, the medium-temperature superheater 2 and the low-temperature superheater 3 are all light pipe structures.

[0022] In the embodiment, the medium-temperature superheater 2 and the low-temperature superheater 3 are both arranged in series and in counterflow.

[0023] In the embodiment, the high-temperature superheater 1 is arranged in series and in parallel flow.

[0024] In the embodiment, the tube row pitch of the high-temperature superheater 1 and the medium-temperature superheater 2 is greater than or equal to 200 mm, so as to avoid fouling and ash blocking of the heating surface, and the specific tube row pitch can be adaptively adjusted according to actual needs.

[0025] In the embodiment, the high-temperature superheater 1, the medium-temperature superheater 2 and the low-temperature superheater 3 are all light pipe structures.

[0026] The above disclosed embodiments of the utility model are only used for helping to illustrate the utility model. The embodiments do not describe all the details, and the utility model is not limited to the specific implementation mode. According to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments, in order to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and utilize the utility model.

Claims

1. A superheating system with waste incineration waste heat boiler superheaters arranged side by side, characterized by: It comprises a pre-superheater group (7) and a low-temperature superheater (3) arranged in sequence along the direction of the flue gas, wherein the pre-superheater group (7) comprises a high-temperature superheater (1) and a medium-temperature superheater (2), and the high-temperature superheater (1) and the medium-temperature superheater (2) are arranged side by side perpendicular to the direction of the flue gas.

2. The superheating system of waste incineration waste heat boilers arranged side by side according to claim 1, characterized in that: The pre-superheater group (7) and the low-temperature superheater (3) are both arranged in the tail flue (6) at the outlet of the furnace (5).

3. The superheating system of waste incineration waste heat boilers arranged side by side according to claim 1, characterized in that: The high-temperature superheater (1), the medium-temperature superheater (2) and the low-temperature superheater (3) are all light tube structures.

4. The superheating system of waste incineration waste heat boilers arranged side by side according to claim 3, characterized in that: The medium-temperature superheater (2) and the low-temperature superheater (3) are both arranged in series and in countercurrent.

5. The superheating system of waste incineration waste heat boilers arranged side by side according to claim 3, characterized in that: The high-temperature superheater (1) is arranged in series and downstream.

6. The superheating system of waste incineration waste heat boilers arranged side by side according to claim 3, characterized in that: The tube row pitch of the high-temperature superheater (1) and the medium-temperature superheater (2) is greater than or equal to 200 mm.

7. The superheating system of waste incineration waste heat boilers arranged side by side according to claim 1, characterized in that: A water spray cooling device (4) is provided between the high-temperature superheater (1) and the medium-temperature superheater (2).

8. The superheating system of waste incineration waste heat boilers arranged side by side according to claim 1, characterized in that: A water spraying cooling device (4) is provided between the medium-temperature superheater (2) and the low-temperature superheater (3).

Images