CN214147825U - Waste heat boiler matched with vertical clean heat recovery coke oven - Google Patents
Waste heat boiler matched with vertical clean heat recovery coke oven Download PDFInfo
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- CN214147825U CN214147825U CN202022915776.XU CN202022915776U CN214147825U CN 214147825 U CN214147825 U CN 214147825U CN 202022915776 U CN202022915776 U CN 202022915776U CN 214147825 U CN214147825 U CN 214147825U
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Abstract
The utility model discloses a complete set in waste heat boiler of vertical clean type heat recovery coke oven, include: the steam-heating device comprises an installation frame, wherein a flue is arranged on the installation frame, a steam pocket is arranged on the installation frame above the flue, the flue comprises a first flue and a second flue which are vertically arranged on the installation frame, the tops of the first flue and the second flue are communicated with a top flue, the lower end of the first flue is provided with a flue gas inlet, and a high-temperature superheater, a low-temperature superheater and a high-temperature evaporator are sequentially arranged in the first flue from bottom to top; the lower end of the second flue is provided with a flue gas outlet, and a low-temperature evaporator and a plurality of stages of coal economizers are sequentially arranged in the second flue from top to bottom; the first flue adopts a water-cooled wall structure, and the top of the first flue is formed by gradually obliquely transitioning from the water-cooled wall outside the foreign language to the top flue from bottom to top towards the inner side. The utility model has the advantages that: the vertical clean heat recovery coke oven is matched, the heat energy of the flue gas is fully utilized, and the working efficiency is high.
Description
Technical Field
The utility model relates to a waste heat boiler technical field, concretely relates to match in waste heat boiler of clean type heat recovery coke oven.
Background
The equipment investment cost of the vertical cleaning type heat recovery coke oven is 50-60% of that of the horizontal cleaning type heat recovery coke oven, and the vertical cleaning type heat recovery coke oven can be formed by modifying a chemical product coke oven, so the vertical cleaning type heat recovery coke oven is a development trend of the coke oven. In order to fully recycle the high-temperature flue gas in the vertical clean heat recovery coke oven, a matched waste heat boiler is developed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the waste heat boiler matched with the vertical clean heat recovery coke oven has the advantages of simple structure, low equipment cost and good heat exchange effect.
In order to achieve the above object, the utility model adopts the following technical scheme: the waste heat boiler matched with a vertical clean heat recovery coke oven comprises: the steam-heating device comprises an installation frame, wherein a flue is arranged on the installation frame, a steam pocket is arranged on the installation frame above the flue, the flue comprises a first flue and a second flue which are vertically arranged on the installation frame, the tops of the first flue and the second flue are communicated with a top flue, the lower end of the first flue is provided with a flue gas inlet, and a high-temperature superheater, a low-temperature superheater and a high-temperature evaporator are sequentially arranged in the first flue from bottom to top; the lower end of the second flue is provided with a flue gas outlet, and a low-temperature evaporator and a plurality of stages of coal economizers are sequentially arranged in the second flue from top to bottom; the first flue adopts a water-cooled wall structure, and the top of the first flue is formed by gradually obliquely transitioning from the water-cooled wall outside the foreign language to the top flue from bottom to top towards the inner side.
Further, the waste heat boiler matched with the vertical clean heat recovery coke oven comprises a heat exchange tube of the high-temperature evaporator, wherein the heat exchange tube of the high-temperature evaporator comprises a plurality of inclined heat exchange tube sections inclined upwards and a plurality of vertically arranged vertical heat exchange tube sections from bottom to top, one end of each upper adjacent section of inclined heat exchange tube section and one end of each lower adjacent section of inclined heat exchange tube section are connected through the vertical heat exchange tube sections, and the inclined heat exchange tube sections and the vertical heat exchange tube sections form a shape which is bent upwards in a circuitous manner in the first flue.
Furthermore, in the waste heat boiler associated with the vertical clean heat recovery coke oven, an upper end pipe section of the heat exchange pipe of the low-temperature evaporator extends from the inner wall of one side of the second flue to the inner wall of the other side of the second flue in an inclined and upward manner.
Furthermore, the heat exchange tube of the water wall at the lower end of the first flue is bent outwards.
Furthermore, the waste heat boiler matched with the vertical clean heat recovery coke oven is characterized in that the coal economizer is provided with a primary coal economizer, a secondary coal economizer and a tertiary coal economizer from top to bottom in sequence.
Furthermore, the waste heat boiler matched with the vertical clean heat recovery coke oven is characterized in that the high-temperature superheater, the low-temperature superheater and the high-temperature evaporator in the first flue are hung on a water wall in the first flue.
The utility model has the advantages that: the structure is simple, the equipment cost is low, and the device is matched with a vertical clean heat recovery coke oven. Second, set up low temperature over heater and high temperature over heater in the first flue, the superheated steam that the high temperature over heater produced is used for the electricity generation to make full use of flue gas heat energy. Thirdly, the high-temperature evaporator is in a shape of being bent and bent upwards, so that the steam bubbles can move upwards quickly, the steam bubbles are prevented from accumulating, and water circulation is facilitated.
Drawings
FIG. 1 is a schematic structural view of a waste heat boiler of the present invention, which is adapted to a vertical clean heat recovery coke oven.
Detailed Description
The invention will be described in further detail with reference to the drawings and preferred embodiments.
As shown in fig. 1, a waste heat boiler equipped with a vertical clean heat recovery coke oven includes: the installation frame 1 is provided with the flue on the installation frame 1, is provided with the steam pocket 2 on the installation frame 1 of flue top. The flue includes vertical first flue 2 and the second flue 3 of setting on installation frame 1, and the top intercommunication of first flue 2 and second flue 3 has top flue 4, and the lower extreme of first flue 2 is provided with flue gas inlet 21, has set gradually high temperature over heater 201, low temperature over heater 202, high temperature evaporimeter 203 by supreme down in the first flue 1. The first flue 2 adopts a water wall structure, the top 204 of the first flue 2 is formed by gradually inclining and transitioning from the water wall positioned at the outer side to the top flue 4 from the bottom to the inside, and the purpose is as follows: the flue gas is guided and buffered. In this embodiment, the heat exchange tube of the water-cooled wall of first flue 2 lower extreme outwards buckles and sets up, its aim at: is convenient to be connected with a pipeline for conveying high-temperature flue gas. In order to simplify the structure, the high-temperature superheater 201, the low-temperature superheater 202, and the high-temperature evaporator 203 in the first flue 2 are hung on a water wall in the first flue 2.
The bottom of second flue 3 is provided with flue gas export 31, has set gradually low temperature evaporimeter 301 and a plurality of grades of economizer in the second flue 3 from top to bottom, the economizer from top to bottom set gradually one-level economizer 302, second grade economizer 303, tertiary economizer 304. The three coal economizers can better absorb the heat in the flue gas, thereby reducing the heat loss.
In this embodiment, the heat exchange tube of the high temperature evaporator 203 in the first flue 2 includes, from bottom to top, a plurality of inclined heat exchange tube sections 2031 inclined upward and a plurality of vertically arranged vertical heat exchange tube sections 2032, one end of each upper and lower adjacent two inclined heat exchange tube sections 2031 is connected by the vertical heat exchange tube section 2032, and the high temperature evaporator 203 is in a shape of being roundabout and bending upward in the first flue 2. Because the water in the high-temperature evaporator 203 is in a water-vapor mixed state, the high-temperature evaporator 203 adopts a zigzag upward shape, which is more beneficial to the upward movement of bubbles in the water vapor.
Further, the upper end section 3011 of the heat exchange tube of the low temperature evaporator 301 extends obliquely upward from the inner wall of one side of the second flue 3 to the inner wall of the other side of the second flue 3. Vapor is generally formed in the heat exchange tubes near the uppermost position in the low-temperature evaporator 301, and therefore the upward movement of the bubbles is more facilitated by the upper end section 3011 of the heat exchange tubes of the low-temperature evaporator 301 being disposed obliquely upward.
The working principle is as follows: external feed water enters the third-stage economizer 304, water heated in the third-stage economizer 304 sequentially enters the second-stage economizer 303 and the first-stage economizer 302, and the water temperature is sequentially increased. Hot water in the primary economizer 302 enters the steam drum 2, the hot water in the steam drum 2 is supplied to the low-temperature evaporator 301, the water-vapor mixture in the low-temperature evaporator 301 enters the high-temperature evaporator 203, high-temperature steam in the high-temperature evaporator 203 sequentially passes through the low-temperature superheater 202 and the high-temperature superheater 201, and superheated steam generated in the high-temperature superheater is used for power generation.
The utility model has the advantages that: the structure is simple, the equipment cost is low, and the device is matched with a vertical clean heat recovery coke oven. Secondly, a low-temperature superheater 202 and a high-temperature superheater 201 are arranged in the first flue 2, and superheated steam generated by the high-temperature superheater 201 is used for power generation, so that the heat energy of the flue gas is fully utilized. Thirdly, the high temperature evaporator 203 is in a shape of being bent upwards, so that bubbles generated inside the high temperature evaporator can move upwards quickly, the bubbles are prevented from accumulating, and water circulation is facilitated.
Claims (6)
1. The waste heat boiler matched with a vertical clean heat recovery coke oven comprises: the installation frame is provided with the flue on the installation frame, is provided with the steam pocket on the installation frame of flue top, its characterized in that: the flue comprises a first flue and a second flue which are vertically arranged on the mounting frame, the tops of the first flue and the second flue are communicated with a top flue, the lower end of the first flue is provided with a flue gas inlet, and a high-temperature superheater, a low-temperature superheater and a high-temperature evaporator are sequentially arranged in the first flue from bottom to top; the lower end of the second flue is provided with a flue gas outlet, and a low-temperature evaporator and a plurality of stages of coal economizers are sequentially arranged in the second flue from top to bottom; the first flue adopts a water-cooled wall structure, and the top of the first flue is formed by gradually obliquely transitioning from the water-cooled wall positioned on the outer side to the top flue from bottom to top towards the inner side.
2. The exhaust-heat boiler of claim 1, adapted to a vertical clean heat recovery coke oven, wherein: the heat exchange tube of the high-temperature evaporator comprises a plurality of inclined heat exchange tube sections inclined upwards and a plurality of vertically arranged vertical heat exchange tube sections from bottom to top, one end of each upper adjacent section of inclined heat exchange tube section and one end of each lower adjacent section of inclined heat exchange tube section are connected through the vertical heat exchange tube sections, and the inclined heat exchange tube sections and the vertical heat exchange tube sections form a shape which is circuitous and bent upwards in the first flue.
3. The exhaust-heat boiler of claim 2, adapted to a vertical clean heat recovery coke oven, wherein: the upper end pipe section of the heat exchange pipe of the low-temperature evaporator extends upwards from the inner wall of one side of the second flue to the inner wall of the other side of the second flue in an inclined mode.
4. The exhaust-heat boiler of claim 1, 2 or 3, fitted to a vertical clean heat recovery coke oven, wherein: the heat exchange tube of the water-cooled wall at the lower end of the first flue is bent outwards.
5. The exhaust-heat boiler of claim 1, 2 or 3, fitted to a vertical clean heat recovery coke oven, wherein: the coal economizer is provided with a primary coal economizer, a secondary coal economizer and a tertiary coal economizer from top to bottom in sequence.
6. The exhaust-heat boiler of claim 1, 2 or 3, fitted to a vertical clean heat recovery coke oven, wherein: the high-temperature superheater, the low-temperature superheater and the high-temperature evaporator in the first flue are all hung on a water-cooled wall in the first flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022915776.XU CN214147825U (en) | 2020-12-08 | 2020-12-08 | Waste heat boiler matched with vertical clean heat recovery coke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022915776.XU CN214147825U (en) | 2020-12-08 | 2020-12-08 | Waste heat boiler matched with vertical clean heat recovery coke oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214147825U true CN214147825U (en) | 2021-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022915776.XU Active CN214147825U (en) | 2020-12-08 | 2020-12-08 | Waste heat boiler matched with vertical clean heat recovery coke oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214147825U (en) |
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2020
- 2020-12-08 CN CN202022915776.XU patent/CN214147825U/en active Active
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