CN216378046U

CN216378046U - Ascending pipe waste heat recycling mechanism

Info

Publication number: CN216378046U
Application number: CN202122719838.4U
Authority: CN
Inventors: 韩烨; 张民强; 段志钢; 董良华; 张兴聚; 刘文良; 王钧祥
Original assignee: Cangzhou China Railway Equipment Manufacturing Materials Co Ltd
Current assignee: Cangzhou China Railway Equipment Manufacturing Materials Co Ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-04-26
Anticipated expiration: 2031-11-09

Abstract

The utility model discloses a waste heat recycling mechanism of a riser, which comprises a riser body, wherein a heat exchange body is spirally arranged in the riser body along the inner wall, a spiral cavity is arranged in the heat exchange body, and the upper end and the lower end of the cavity are communicated with the inlet water and the outlet water of circulating water; the heat-conducting fins are arranged into the spiral heat-exchanging body, so that the heat-exchanging path of the hot coal gas in the ascending tube is increased, the heat-conducting time is prolonged, the heat is more fully conducted to the heat-exchanging body, and the recovery rate of the heat carried by the crude coal gas is increased.

Description

Ascending pipe waste heat recycling mechanism

Technical Field

The utility model relates to the technical field of coking by a coke oven, in particular to a riser waste heat recycling mechanism.

Background

The raw gas generated by coke oven coking carries a large amount of heat when being discharged, and the common method in the prior art is that: spraying circulating ammonia water to directly contact with raw gas, and leading the raw gas to be rapidly cooled to 80-83 ℃ by virtue of large-amount vaporization of the circulating ammonia water so as to be sent to a subsequent gas refining system, wherein the heat of the high-temperature raw gas in the process is converted into useless low-temperature water vapor (about 80 ℃) and needs a large amount of circulating water for cooling, and the defects that the heat of the high-temperature raw gas is wasted and a large amount of water resources are consumed exist; the chinese utility model patent with publication number CN205152147U discloses an ascending tube device for recovering the waste heat of coke oven crude gas, wherein a plurality of heat-conducting fins are arranged in the ascending tube along the circumferential direction for heat conduction, the heat is conducted to the cavity outside the ascending tube, and the heat is taken away and utilized by circulating water in the cavity; when the scheme is used, the rising speed of hot coal gas is high, the contact time with the heat conduction fins is short, the heat conduction is insufficient, and a large amount of heat carried in the hot coal gas is wasted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to avoid the defects in the prior art and provides a waste heat recycling mechanism of a rising pipe, thereby effectively solving the defects in the prior art.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a rising pipe waste heat recovery utilizes mechanism, has arranged the heat transfer body along the inner wall spiral in the body that rises including the body that rises, and the inside of heat transfer body is provided with spiral cavity, and the upper and lower both ends switch-on circulating water of cavity are intake and are gone out water.

Further, a heat conduction water pipe is spirally embedded in the pipe wall of the ascending pipe body along the circumferential direction, the upper end and the lower end of the heat conduction water pipe are respectively connected with the upper end and the lower end of the cavity, and a water inlet and a water outlet are formed in the middle of the heat conduction water pipe.

Furthermore, the upper end of the heat exchange body is provided with a steam outlet pipe communicated with the cavity, and the steam outlet pipe is communicated with the outer side of the ascending pipe body.

Further, the surface of the heat exchange body is provided with an anti-sticking coating.

Furthermore, a plurality of turbulence columns are arranged on the upper part of the spiral flow channel on the heat exchange body.

The technical scheme of the utility model has the following beneficial effects: the heat-conducting fins are arranged into the spiral heat-exchanging body, so that the heat-exchanging path of the hot coal gas in the ascending tube is increased, the heat-conducting time is prolonged, the heat is more fully conducted to the heat-exchanging body, and the recovery rate of the heat carried by the crude coal gas is increased.

Drawings

FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the ascending pipe waste heat recycling mechanism according to this embodiment includes an ascending pipe body 1, a heat exchanging body 2 is spirally arranged along an inner wall of the ascending pipe body 1, a spiral cavity (not shown in the figure) is arranged inside the heat exchanging body 2, and an upper end and a lower end of the cavity are connected to a water inlet and a water outlet of circulating water; circulating water flowing from top to bottom is communicated in the cavity, the circulating water flows spirally along the cavity, hot coal gas spirally passes through the spiral flow channel from the bottom of the heat exchanger 2 upwards, heat is conducted to the circulating water through the heat exchanger 2, a heat exchange path is increased in an ascending pipe with a limited length, heat conduction time is prolonged, the heat is conducted to the heat exchanger 2 more fully, and the recovery rate of heat carried by raw coke gas is increased;

preferably, the heat conducting water pipe 3 is spirally embedded in the pipe wall of the ascending pipe body 1 along the circumferential direction, the upper end and the lower end of the heat conducting water pipe 3 are respectively connected with the upper end and the lower end of the cavity, the middle part of the heat conducting water pipe 3 is provided with a water inlet 31 and a water outlet 32, circulating water firstly enters the heat conducting water pipe 3 in the middle part of the ascending pipe body 1, then upwards spirals in the pipe wall of the ascending pipe body 1 along the heat conducting water pipe 3 and enters the heat exchanger body 2, heat is conducted to the heat exchanger body 2 and the pipe wall of the ascending pipe body 1 in the upward movement process of smoke, heat on the heat exchanger body 2 and the pipe wall is absorbed in circulating water, and waste of heat energy is further avoided;

preferably, the upper end of the heat exchange body 2 is provided with a steam outlet pipe 4 communicated with the cavity, the steam outlet pipe 4 is communicated with the outer side of the ascending pipe body 1, and steam vaporized by circulating water in the heat exchange body 2 can be sent out through the steam outlet pipe 4;

preferably, the surface of the heat exchange body 2 is provided with an anti-sticking coating, the anti-sticking coating is made of polytetrafluoroethylene, and the heat exchange effect is prevented from being influenced by the adhesion of smoke particles on the surface of the heat exchange body 2;

preferably, a plurality of turbulence columns 21 are arranged on the upper part of the spiral flow channel on the heat exchange body 2, and hot flue gas flows irregularly forwards after passing through the turbulence columns 21, so that the flue gas is uniformly contacted with the heat exchange body 2, and the heat exchange effect is improved.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a riser waste heat recovery utilizes mechanism which characterized in that: the heat exchanger comprises an ascending pipe body, wherein a heat exchange body is spirally arranged in the ascending pipe body along the inner wall, a spiral cavity is arranged in the heat exchange body, and the upper end and the lower end of the cavity are communicated with the inlet water and the outlet water of circulating water;

and a heat conduction water pipe is spirally embedded in the pipe wall of the ascending pipe body along the circumferential direction, the upper end and the lower end of the heat conduction water pipe are respectively connected with the upper end and the lower end of the cavity, and the middle part of the heat conduction water pipe is provided with a water inlet and a water outlet.

2. The riser waste heat recycling mechanism of claim 1, wherein: and the upper end of the heat exchange body is provided with a steam outlet pipe communicated with the cavity, and the steam outlet pipe is communicated to the outer side of the ascending pipe body.

3. The riser waste heat recycling mechanism of claim 1, wherein: the surface of the heat exchange body is provided with an anti-sticking coating.

4. The riser waste heat recycling mechanism of claim 1, wherein: and a plurality of turbulence columns are arranged on the upper part of the spiral flow channel on the heat exchange body.