CN211546408U - Coke oven tedge variable cross-section sectional type coil heat exchanger - Google Patents
Coke oven tedge variable cross-section sectional type coil heat exchanger Download PDFInfo
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- CN211546408U CN211546408U CN202020081530.4U CN202020081530U CN211546408U CN 211546408 U CN211546408 U CN 211546408U CN 202020081530 U CN202020081530 U CN 202020081530U CN 211546408 U CN211546408 U CN 211546408U
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Abstract
The utility model discloses a variable cross-section sectional type coil heat exchanger of a coke oven ascending pipe, relating to the technical field of coke oven heat exchange; the outer side wall of the sleeve is provided with variable cross-section sectional type coil pipes, the heat conducting layer is arranged between the variable cross-section sectional type coil pipes and the sleeve, the steel wire mesh is connected with the sleeve through pins and arranged on the outer side of the variable cross-section sectional type coil pipes, and the outer side wall of the steel wire mesh is provided with a heat insulating layer; the utility model adopts the variable cross-section design, and reduces the flow resistance of the steam and water in the coil pipe; secondly, a sectional design is adopted, the coil heat exchanger of one ascending pipe can be divided into a plurality of sections which are mutually independent, the steam-water flow at the inlet of each section can be independently adjusted, the temperature of the crude gas outlet is ensured to be stabilized at about 500 ℃, and the coking of the inner wall of the ascending pipe is avoided; and simultaneously, saturated water and saturated steam can be respectively introduced into the plurality of sections of coil pipes of the same riser pipe so as to respectively produce saturated steam and superheated steam.
Description
Technical Field
The utility model belongs to the technical field of the coke oven heat transfer, concretely relates to coke oven tedge variable cross section sectional type coil pipe heat exchanger.
Background
At present, with the high importance of a coking plant on resource recycling, the waste heat recovery of the raw gas is one of the main ways for reducing the energy consumption of the coke oven, and the existing process is to make the raw gas with high temperature of 650-850 ℃ escaping from a coking chamber enter a gas collecting pipe through an ascending pipe heat exchanger to recover the waste heat. The coke oven crude gas contains various tar components, the dew point of the coke oven crude gas is mainly distributed at 200-350 ℃, liquid with higher viscosity is easily generated to be tightly adhered to the surface of a tube wall, so that the problems of adhesion and coking are caused, the production working condition is unstable, and the heat transfer problem is further worsened. When the riser pipe is subjected to alternate changes of dry burning and water supply, the metal material of the pipe body is easy to generate high-temperature oxidation and high-temperature creep deformation, so that the deformation and water leakage of the cylinder body are caused, and the normal production of the coke oven is influenced. At present, the coil heat exchanger of the ascending tube has the common problems of low heat exchange efficiency, easy coking of the inner wall and large flow resistance, and tube explosion safety accidents happen occasionally.
SUMMERY OF THE UTILITY MODEL
The heat exchanger aims to solve the problems that the prior coil heat exchanger is easy to generate liquid with higher viscosity to be tightly adhered to the surface of the pipe wall, so that the adhesion and coking are caused, the production working condition is unstable, and the heat transfer problem is further worsened; when the riser pipe is subjected to alternate changes of dry burning and water supply, the metal material of the pipe body is easy to generate high-temperature oxidation and high-temperature creep deformation, so that the deformation and water leakage of the cylinder body are caused, and the normal production of the coke oven is influenced; the prior coil heat exchanger of the ascending tube has the common problems of low heat exchange efficiency, easy coking of the inner wall and large flow resistance, and the problem of tube explosion safety accident is solved; the utility model aims to provide a coke oven tedge variable cross section sectional type coil pipe heat exchanger.
The utility model relates to a sectional type coil heat exchanger with variable cross section for a coke oven ascending pipe, which comprises a sleeve, a heat conducting layer, a steel wire mesh, a heat insulating layer and a sectional type coil with variable cross section; the outer side wall of the sleeve is provided with variable cross-section sectional type coil pipes, a heat conduction layer is arranged between the variable cross-section sectional type coil pipes and the sleeve, a steel wire mesh is connected with the sleeve through a pin, the steel wire mesh is arranged on the outer side of the variable cross-section sectional type coil pipes, a heat insulation layer is arranged on the outer side wall of the steel wire mesh, the variable cross-section sectional type coil pipes are divided into two sections which are respectively arranged on the upper side and the lower side of the sleeve, and the variable cross-section sectional type coil pipes comprise large cross-section coil pipes; the small-section coil pipe is connected with the large-section coil pipe, the inlet parts of the small-section coil pipe on the lower side and the small-section coil pipe on the upper side are respectively connected with a lower section inlet pipe and an upper section inlet pipe, and the outlet parts of the large-section coil pipe on the lower side and the upper side are respectively connected with a lower section outlet pipe and an upper section outlet pipe.
Preferably, the sleeve has a thickness of 8-10mm and is a heat-resistant steel type sleeve.
Preferably, the thickness of the heat conducting layer is 60 mm.
Preferably, the outlet pipe of the upper section is used for introducing saturated water, the inlet pipe of the upper section is used for discharging a steam-water mixture, the outlet pipe of the lower section is used for introducing saturated steam, and the inlet pipe of the lower section is used for discharging superheated steam.
Preferably, high-thermal-conductivity materials are filled among the large-section coil pipes, the small-section coil pipes and the variable-section sectional coil pipes and the sleeve pipes.
Preferably, the steel wire mesh comprises an upper ring body, a lower ring body, a shaping sheet and a mesh body; the upper ring body is uniformly connected with the lower ring body through a plurality of shaping sheets, and a net body is connected between the shaping sheets.
Compared with the prior art, the beneficial effects of the utility model are that:
firstly, the variable cross-section design is adopted, and the flow resistance of steam and water in the coil pipe is reduced; secondly, a sectional design is adopted, the coil heat exchanger of one ascending pipe can be divided into a plurality of sections which are mutually independent, the steam-water flow at the inlet of each section can be independently adjusted, the temperature of the crude gas outlet is ensured to be stabilized at about 500 ℃, and the coking of the inner wall of the ascending pipe is avoided;
secondly, simultaneously, saturated water and saturated steam can be respectively introduced into the plurality of sections of coil pipes of the same riser pipe so as to respectively produce saturated steam and superheated steam; and high-thermal-conductivity materials are filled between the coil pipes and the sleeve, so that the thermal conductivity is enhanced.
Drawings
For ease of illustration, the invention is described in detail by the following detailed description and accompanying drawings.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a top view of the present invention;
fig. 3 is a schematic structural diagram of the middle wire mesh of the present invention.
In the figure: 1-a sleeve; 2-heat conducting layer; 3-steel wire mesh; 4-an insulating layer; 5-an upper outlet pipe; 6-large section coil pipe; 7-small section coil pipe; 8-an upper inlet pipe; 9-a lower section outlet pipe; 10-lower inlet pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described below with reference to specific embodiments shown in the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and/or process steps that are closely related to the solution according to the invention are shown in the drawings, while other details that are not relevant to the invention are omitted.
As shown in fig. 1 and 2, the following technical solutions are adopted in the present embodiment: the heat-conducting type coil pipe comprises a sleeve 1, a heat conducting layer 2, a steel wire mesh 3, a heat insulating layer 4 and a variable cross-section sectional type coil pipe; the outer side wall of the sleeve 1 is provided with variable-section sectional type coil pipes, the heat conducting layer 2 is arranged between the variable-section sectional type coil pipes and the sleeve 1, and the thickness of the heat conducting layer is 60 mm; the heat conducting layer 2 is formed by compounding special silicon carbide, brown corundum and the like which have high temperature resistance, corrosion resistance and strong heat storage capacity; the steel wire mesh 3 is connected with the sleeve 1 through pins, the steel wire mesh 3 is arranged on the outer side of the variable-section coil pipe, a heat insulation layer 4 is arranged on the outer side wall of the steel wire mesh 3, the steel wire mesh is used as a framework of a heat conduction layer to enhance the strength and stability of the heat conduction layer, and the heat of the sleeve is transferred to the outer wall of the coil pipe more quickly to enhance heat transfer; the variable cross-section sectional type coil pipe is divided into two sections which are respectively arranged on the upper side and the lower side of the sleeve 1, and comprises a large cross-section coil pipe 6, a small cross-section coil pipe 7, an upper section outlet pipe 5, an upper section inlet pipe 8, a lower section outlet pipe 9 and a lower section inlet pipe 10; the small-section coil pipe 7 is connected with the large-section coil pipe 6, the inlet parts of the small-section coil pipe 7 on the lower side and the small-section coil pipe 7 on the upper side are respectively connected with a lower section inlet pipe 10 and an upper section inlet pipe 8, and the outlet parts of the large-section coil pipe 6 on the lower side and the upper side are respectively connected with a lower section outlet pipe 9 and an upper section outlet pipe 5.
Further, the thickness of the sleeve 1 is 8-10mm, and the sleeve is a heat-resistant steel sleeve.
Furthermore, the outlet pipe 5 at the upper section is used for entering saturated water, the inlet pipe 8 at the upper section is used for discharging steam-water mixture, the outlet pipe 9 at the lower section is used for entering saturated steam, and the inlet pipe 10 at the lower section is used for discharging superheated steam.
Further, high-thermal-conductivity materials are filled between the large-section coil 6 and the small-section coil 7 and between the variable-section sectional coil and the sleeve 1.
As shown in fig. 3, further, the steel wire mesh 3 includes an upper ring body 31, a lower ring body 32, a shaping sheet 33, and a mesh body 34; the upper ring body 31 and the lower ring body 32 are uniformly connected through a plurality of shaping sheets 33, and a net body 34 is connected between the plurality of shaping sheets 33.
The working principle of the specific embodiment is as follows: the coil pipe is divided into two sections, the inlets of the upper section and the lower section are saturated water, the water inlet flow of each section can be independently adjusted according to the flue gas temperature at the outlet of the ascending pipe, and the flue gas temperature at the outlet of the ascending pipe is ensured to be stabilized at 500 ℃.
In the embodiment, the coil pipe is divided into two sections, the inlet of the upper section is saturated water, the outlet is a steam-water mixture, and steam-water separation is carried out by introducing a steam drum; saturated steam is arranged at the inlet of the lower section, and superheated steam is arranged at the outlet of the lower section; according to the requirements of customers, the same riser can produce both saturated steam and superheated steam.
The coil is divided into two sections, each section having two different cross-sections. The section of the coil is circular, the diameter of the section of the coil 7 with the small section is 32mm, and the size of the section of the coil 6 with the large section is 48 mm. The steam-water mixture in the coil pipe continuously absorbs heat along the height direction of the ascending pipe, the volume is continuously increased, and the flow speed is continuously increased; along with the increase of the height of the ascending pipe, the section of each section of the coil pipe is enlarged, the flow velocity of the steam-water mixture in the coil pipe can be well stabilized, the flow resistance of the steam-water mixture is reduced, the steam-water separation is avoided, and the power consumption of the system is reduced.
The specific embodiment provides a sectional coil heat exchanger with a variable cross section aiming at the common problems of low heat exchange efficiency and large flow resistance of the existing coil heat exchanger of the ascending pipe of the coke oven. Firstly, the variable cross-section design is adopted, and the flow resistance of steam and water in the coil pipe is reduced; secondly, a sectional design is adopted, the coil heat exchanger of one ascending pipe can be divided into a plurality of sections which are mutually independent, the steam-water flow at the inlet of each section can be independently adjusted, the temperature of the crude gas outlet is ensured to be stabilized at about 500 ℃, coking on the inner wall of the ascending pipe is avoided, and simultaneously, saturated water and saturated steam can be respectively introduced into the plurality of sections of coils of the same ascending pipe so as to respectively produce saturated steam and superheated steam; and high-thermal-conductivity materials are filled between the coil pipes and the sleeve, so that the thermal conductivity is enhanced.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A variable cross-section sectional type coil heat exchanger of a coke oven ascending pipe is characterized in that: the heat-conducting type coil pipe comprises a sleeve, a heat conducting layer, a steel wire mesh, a heat insulating layer and a variable cross-section sectional type coil pipe; the outer side wall of the sleeve is provided with variable cross-section sectional type coil pipes, a heat conduction layer is arranged between the variable cross-section sectional type coil pipes and the sleeve, a steel wire mesh is connected with the sleeve through a pin, the steel wire mesh is arranged on the outer side of the variable cross-section sectional type coil pipes, a heat insulation layer is arranged on the outer side wall of the steel wire mesh, the variable cross-section sectional type coil pipes are divided into two sections which are respectively arranged on the upper side and the lower side of the sleeve, and the variable cross-section sectional type coil pipes comprise large cross-section coil pipes; the small-section coil pipe is connected with the large-section coil pipe, the inlet parts of the small-section coil pipe on the lower side and the small-section coil pipe on the upper side are respectively connected with a lower section inlet pipe and an upper section inlet pipe, and the outlet parts of the large-section coil pipe on the lower side and the upper side are respectively connected with a lower section outlet pipe and an upper section outlet pipe.
2. The coke oven riser variable cross-section segmented coil heat exchanger of claim 1, wherein: the thickness of the sleeve is 8-10mm, and the sleeve is a heat-resistant steel sleeve.
3. The coke oven riser variable cross-section segmented coil heat exchanger of claim 1, wherein: the thickness of the heat conduction layer is 60 mm.
4. The coke oven riser variable cross-section segmented coil heat exchanger of claim 1, wherein: the outlet pipe of the upper section is used for entering saturated water, the inlet pipe of the upper section is used for discharging steam-water mixture, the outlet pipe of the lower section is used for entering saturated steam, and the inlet pipe of the lower section is used for discharging superheated steam.
5. The coke oven riser variable cross-section segmented coil heat exchanger of claim 1, wherein: and high-thermal-conductivity materials are filled among the large-section coil pipe, the small-section coil pipe and the variable-section sectional type coil pipe and the sleeve pipe.
6. The coke oven riser variable cross-section segmented coil heat exchanger of claim 1, wherein: the steel wire mesh comprises an upper ring body, a lower ring body, a shaping sheet and a mesh body; the upper ring body is uniformly connected with the lower ring body through a plurality of shaping sheets, and a net body is connected between the shaping sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020081530.4U CN211546408U (en) | 2020-01-15 | 2020-01-15 | Coke oven tedge variable cross-section sectional type coil heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020081530.4U CN211546408U (en) | 2020-01-15 | 2020-01-15 | Coke oven tedge variable cross-section sectional type coil heat exchanger |
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| CN211546408U true CN211546408U (en) | 2020-09-22 |
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| CN202020081530.4U Active CN211546408U (en) | 2020-01-15 | 2020-01-15 | Coke oven tedge variable cross-section sectional type coil heat exchanger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112662406A (en) * | 2020-12-23 | 2021-04-16 | 苏州航明环保节能科技有限公司 | Coke oven ascending pipe heat exchanger with spiral unloading function |
| CN117450499A (en) * | 2023-12-26 | 2024-01-26 | 陕西驭腾能源环保科技股份有限公司 | Composite riser superheater and application method thereof |
-
2020
- 2020-01-15 CN CN202020081530.4U patent/CN211546408U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112662406A (en) * | 2020-12-23 | 2021-04-16 | 苏州航明环保节能科技有限公司 | Coke oven ascending pipe heat exchanger with spiral unloading function |
| CN117450499A (en) * | 2023-12-26 | 2024-01-26 | 陕西驭腾能源环保科技股份有限公司 | Composite riser superheater and application method thereof |
| CN117450499B (en) * | 2023-12-26 | 2024-02-27 | 陕西驭腾能源环保科技股份有限公司 | Composite riser superheater and application method thereof |
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