CN115949927A - Medium-pressure waste heat recoverer - Google Patents
Medium-pressure waste heat recoverer Download PDFInfo
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- CN115949927A CN115949927A CN202211601507.3A CN202211601507A CN115949927A CN 115949927 A CN115949927 A CN 115949927A CN 202211601507 A CN202211601507 A CN 202211601507A CN 115949927 A CN115949927 A CN 115949927A
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- water separation
- waste heat
- stabilizing device
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Abstract
The invention provides a medium-pressure waste heat recoverer, which relates to the technical field of waste heat recovery and aims to solve the problems that the existing waste heat recoverer has low heat exchange efficiency, low quality of produced steam, short service life of equipment and high resistance caused by scaling and ash hanging easily in use, and comprises a waste heat recoverer, a steam-water separation pressure stabilizing device and a water supply system; the waste heat recoverer and the steam-water separation pressure stabilizing device are communicated through an ascending pipe and a descending pipe respectively. The waste heat recoverer comprises an inlet guide section and a heat exchange section, wherein the inlet guide section adopts a flared guide cylinder, and a shell pass of the heat exchange section is communicated with an ascending pipe and a descending pipe, so that high-speed washing of high-temperature flue gas at a pipe plate is avoided, resistance caused by flow state change of the flue gas is reduced, different flue gas flow rates can be selected in the heat exchange section according to flue gas characteristics of different carbon black varieties, and balance adhered between the insides of the heat exchange section and the carbon black due to temperature change is reduced while certain resistance drop is ensured.
Description
Technical Field
The invention relates to the technical field of waste heat recovery, in particular to a medium-pressure waste heat recoverer.
Background
The carbon black enterprise has great potential of waste heat utilization, and the waste heat utilization occupies an important position in energy conservation at present. The recycling of waste heat resources requires technological requirements, is technically feasible, economically reasonable and protects the environment. The waste heat recoverer used in the original carbon black industry has a series of influences that the heat exchange efficiency is not high, the steam pressure of production is low (often less than 0.5MPa, the service life of equipment is short, the carbon black production is influenced by large resistance caused by scaling and ash hanging, the heat exchange efficiency is low and the like.
Disclosure of Invention
In order to solve the technical problems, the invention provides a waste heat recoverer which is used for solving the problems that the existing waste heat recoverer is low in heat exchange efficiency, low in quality of produced steam, short in service life of equipment and high in resistance caused by scaling and ash hanging.
The purpose and the effect of the waste heat recoverer are achieved by the following specific technical means:
a medium-pressure waste heat recoverer comprises a waste heat recoverer, a steam-water separation pressure stabilizing device and a water supply system; the waste heat recoverer and the steam-water separation pressure stabilizing device are respectively communicated through an ascending pipe and a descending pipe; the steam-water separation pressure stabilizing device is characterized in that a partition plate is horizontally arranged in an inner cavity of the steam-water separation pressure stabilizing device, the front end of the partition plate is butted with the side wall of the front end of the inner cavity of the steam-water separation pressure stabilizing device, the rear end of the partition plate is an upward bent guide plate, and a gap is reserved between the guide plate and the rear end of the inner cavity of the steam-water separation pressure stabilizing device.
Optionally, the waste heat recoverer comprises an upper inlet flow guide section, a lower inlet flow guide section and a heat exchange section, wherein the upper inlet flow guide section and the lower inlet flow guide section adopt flared flow guide cylinders, a shell pass of the heat exchange section is communicated with an ascending pipe and a descending pipe, and a vertical honeycomb-shaped heat exchange pipe is installed in the heat exchange section.
Optionally, a water supply pipe is arranged in the middle of the front end of the steam-water separation pressure stabilizing device, and the water supply pipe extends to the middle of an inner cavity of the steam-water separation pressure stabilizing device.
Optionally, a steam outlet is arranged at the upper end of the steam-water separation pressure stabilizing device, the upper end of the steam outlet is merged into the steam main pipe, and a collecting cover with a narrow upper part and a wide lower part is arranged at the lower end of the steam outlet.
Optionally, the inner cavity of the steam-water separation pressure stabilizing device, the ascending pipe, the descending pipe and the heat exchange section form an internal circulation.
Optionally, the installation position of the steam-water separation and pressure stabilization device is higher than the upper end of the waste heat recoverer.
Optionally, a liquid level meter is installed in the steam-water separation pressure stabilizing device.
Optionally, be equipped with the heat preservation in steam-water separation voltage regulator device's the casing, it has the heat preservation cotton to fill in the heat preservation.
Optionally, the top plane of the partition plate is uniformly and upwardly provided with blocking ball columns at intervals, the upper ends of the blocking ball columns are of a ball head structure, the partition columns are symmetrically and fixedly mounted on the top plane of the partition plate in a front-back manner, and the inner ends of the water replenishing pipes are located in an area between the front partition column and the rear partition column.
Optionally, an arc-shaped condensation plate is arranged at the top of the rear end of the inner cavity of the steam-water separation pressure stabilizing device, and a gap between the rear end of the partition plate and the steam-water separation pressure stabilizing device is divided into two parts under the condensation plate.
Compared with the prior art, the invention has the following beneficial effects:
1. the waste heat recoverer comprises an inlet guide section and a heat exchange section, wherein the inlet guide section adopts a flared guide cylinder, and a shell pass of the heat exchange section is communicated with an ascending pipe and a descending pipe, so that high-speed washing of high-temperature flue gas at a pipe plate is avoided, resistance caused by flow state change of the flue gas is reduced, different flue gas flow rates can be selected in the heat exchange section according to flue gas characteristics of different carbon black varieties, and balance adhered between the insides of the heat exchange section and the carbon black due to temperature change is reduced while certain resistance drop is ensured.
2. According to the steam-water separation pressure stabilizing device, the water supplementing pipe extends to the middle of the inner cavity of the steam-water separation pressure stabilizing device, so that the influence of water fluctuation on a heat exchange pipe is reduced while efficient heat exchange is guaranteed, the entrainment of water in steam is effectively avoided, the safety of a steam conveying pipeline is effectively protected, and the risk of water hammer in the steam conveying process is reduced.
3. The inner cavity of the steam-water separation pressure stabilizing device, the ascending pipe, the descending pipe and the heat exchange section form internal circulation, so that the heat exchange efficiency is increased, and the influence of a gas phase space in the heat exchange section on equipment scouring is reduced.
4. According to the invention, hot water entering from the ascending pipe can flow on the upper layer through the separation plate, steam is convenient to produce, the guide plate is arranged at the rear end, the hot water on the upper layer can move upwards along the guide plate when flowing to the rear end, part of redundant produced steam can be condensed under the action of the condensation plate, condensed water can slide to a gap at the rear end of the separation plate and is gathered in an inner cavity of the steam-water separation pressure stabilizing device below the separation plate, and therefore, the condensed water flows back to the waste heat recovery device through the descending pipe and exchanges heat, the whole process is mutually coherent and does not influence each other, and the stable production of the steam is ensured.
5. According to the invention, the blocking ball columns are uniformly and upwards arranged on the plane of the top of the partition plate at intervals, the upper ends of the blocking ball columns are of a ball head structure, the partition columns are symmetrically and fixedly arranged on the plane of the top of the partition plate from front to back, the inner ends of the water replenishing pipes are positioned in the area between the front partition column and the back partition column, so that hot water can stay above the partition plate for a long time after entering, more steam can be evaporated from the hot water in a high-temperature state at the moment, the highest waste heat recovery effect is achieved, the blocking ball columns can provide certain heat storage capacity, the equipment can be always in a high-temperature state in the using process, the heat energy difference replenishment after the hot water enters is reduced, and the steam output and the heat quantity maintenance are further improved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic front view of the present invention.
Fig. 3 is a schematic axial view of the waste heat recovery device in a half-section separated state.
Fig. 4 is a schematic diagram of a portion a of fig. 3 according to the present invention.
FIG. 5 is a schematic axial view of the steam-water separation pressure stabilizer of the present invention in a partially cut-away state.
FIG. 6 is a partial front axle view structural schematic diagram of the steam-water separation pressure stabilizer of the invention.
FIG. 7 is a partial full-section lower axial view structural schematic diagram of the steam-water separation pressure stabilizing device.
FIG. 8 is a schematic view of a steam-water separation pressure stabilizer with a partially cut-away housing having a removed axial view.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
1. a waste heat recoverer; 101. a flared guide cylinder; 102. a heat exchange tube; 2. a riser pipe; 3. a down pipe; 4. a steam-water separation pressure stabilizing device; 401. a steam outlet; 40102. a collection hood; 402. a water replenishing pipe; 403. a heat-insulating layer; 5. a partition plate; 501. a retarding ball column; 502. a baffle; 503. separating the columns; 6. a cold plate.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples.
The embodiment is as follows:
as shown in figures 1 to 8:
the invention provides a medium-pressure waste heat recoverer, which comprises a waste heat recoverer 1, a steam-water separation pressure stabilizing device 4 and a water supply system; the waste heat recoverer 1 is communicated with the steam-water separation pressure stabilizing device 4 through an ascending pipe 2 and a descending pipe 3 respectively; the separating plate 5 is horizontally arranged in the inner cavity of the steam-water separation pressure stabilizing device 4, the front end of the separating plate 5 is butted with the side wall of the front end of the inner cavity of the steam-water separation pressure stabilizing device 4, the rear end of the separating plate 5 is an upward bent guide plate 502, a gap is reserved between the guide plate 502 and the rear end of the inner cavity of the steam-water separation pressure stabilizing device 4, the top of the rear end of the inner cavity of the steam-water separation pressure stabilizing device 4 is provided with an arc-shaped condensation plate 6, the lower part of the condensation plate 6 just divides the gap between the rear end of the separating plate 5 and the steam-water separation pressure stabilizing device 4, hot water entering from the ascending pipe 2 can flow in the upper layer through the separating plate 5, steam is convenient to be produced, the guide plate 502 is arranged at the rear end, hot water in the upper layer can move upwards along the guide plate 502 when flowing to the rear end, part of the redundant produced steam can be condensed under the action of the condensation plate 6, condensed water can slide to the gap at the rear end of the separating plate 5, and can be collected in the inner cavity of the steam-water separation pressure stabilizing device 4 below the separating plate 5, the recovery device 3 can flow back to the waste heat 1 for heat exchange, the whole process is mutually coherent and the stable influence of the steam is ensured, and the steam is not mutually.
Wherein, waste heat recoverer 1 includes import water conservancy diversion section and heat transfer section, it adopts flared guide shell 101 to advance upper and lower import water conservancy diversion section, heat transfer section shell side is linked together with tedge 2 and downtake 3, install vertical honeycomb heat exchange tube 102 in the heat transfer section, improve heat exchange efficiency, avoid the high-speed of the high temperature flue gas of tube sheet department to erode and reduce the resistance that the flue gas flow state change brought, can also be according to the flue gas characteristic of different carbon black varieties simultaneously, the intraductal different flue gas velocity of selection of heat transfer section, reduce because the carbon black is the temperature variation and adhere the balance between the inside because of guaranteeing certain resistance and falling simultaneously.
Wherein, the front end middle part of catch water pressure stabilizer 4 is equipped with moisturizing pipe 402, and moisturizing pipe 402 extends to 4 inner chambers of catch water pressure stabilizer middle parts, reduces the influence of water fluctuation to the heat exchange tube when guaranteeing high-efficient heat transfer, effectively avoids the entrainment volume of steam normal water, has effectively protected steam conveying pipeline's safety, reduces the water hammer risk among the steam transportation process.
Wherein, the upper end of catch water pressure stabilizer 4 is equipped with steam outlet 401, and steam main is merged into to steam outlet 401's upper end, and steam outlet 401's lower extreme is equipped with narrow collection cover 40102 wide down, helps the guide to collect steam and discharges, has avoided the inside water level of flow fluctuation influence heat transfer section to change and has also stabilized the temperature that gets into the heat transfer section simultaneously.
The shell of the steam-water separation pressure stabilizing device 4 is internally provided with a heat insulation layer 403, and heat insulation cotton is filled in the heat insulation layer 403, so that the loss of heat in the steam-water separation process can be reduced.
The inner cavity of the steam-water separation pressure stabilizing device 4, the ascending pipe 2, the descending pipe 3 and the heat exchange section form internal circulation, so that the heat exchange efficiency is increased, and the influence of a gas phase space in the heat exchange section on equipment scouring is reduced.
The installation position of the steam-water separation pressure stabilizing device 4 is higher than the upper end of the waste heat recoverer 1, so that the inner cavity of the steam-water separation pressure stabilizing device 4, the ascending pipe 2, the descending pipe 3 and the heat exchange section can form internal circulation.
Wherein, install the level gauge among the catch water pressure stabilizer 4, detect the control of inside liquid level change, guaranteed the interior liquid level fluctuation range of catch water, reduced the fluctuation range and the export steam quality of flow.
Wherein, even upwards be equipped with retardant sphero-column 501 at interval on the plane of division 5 top, the upper end of retardant sphero-column 501 is the bulb structure, symmetrical fixed mounting has the column 503 around on the plane of division 5 top, the inner of moisturizing pipe 402 is in the region between two column 503 around, make hot water can stay longer time in division 5 top after getting into, so that the hot water that is in high temperature state this moment can evaporate more steam, reach the highest waste heat recovery effect, and retardant sphero-column 501 can provide certain heat storage capacity again, make equipment can be in high temperature state all the time in the use, reduce the poor replenishment of heat energy after hot water gets into, further improvement steam output and heat preservation.
The specific use mode and function of the embodiment are as follows:
the method comprises the steps of supplementing water by adopting desalted water at 105 ℃, reselecting a proper water supplementing pump according to the evaporation capacity, controlling different steam outlet pressures according to different types of carbon black, stabilizing the water supply amount, respectively communicating a waste heat recoverer 1 and a steam-water separation pressure stabilizing device 4 through an ascending pipe 2 and a descending pipe 3, when high-temperature air flow passes through a heat exchange section of the waste heat recoverer 1, heating water in the heat exchange section, communicating the water in the heat exchange section with the steam-water separation pressure stabilizing device 4 through the ascending pipe 2 and the descending pipe 3, so that hot water rises through the ascending pipe 2, cold water enters the heat exchange section through the descending pipe 3 for heat exchange, and steam is discharged through a steam outlet 40 to realize waste heat recovery.
Claims (10)
1. A medium-pressure waste heat recoverer is characterized in that: comprises a waste heat recoverer (1), a steam-water separation pressure stabilizing device (4) and a water supply system; the waste heat recoverer (1) is communicated with the steam-water separation pressure stabilizing device (4) through an ascending pipe (2) and a descending pipe (3) respectively; division plate (5) are horizontally installed in the inner cavity of the steam-water separation pressure stabilizing device (4), the front end of the division plate (5) is in butt joint with the side wall of the front end of the inner cavity of the steam-water separation pressure stabilizing device (4), the rear end of the division plate (5) is an upward bent guide plate (502), and a gap is reserved between the guide plate (502) and the rear end of the inner cavity of the steam-water separation pressure stabilizing device (4).
2. The medium pressure recuperator adapted for carbon black production as in claim 1, wherein: the waste heat recoverer (1) comprises an upper inlet flow guide section, a lower inlet flow guide section and a heat exchange section, wherein the upper inlet flow guide section and the lower inlet flow guide section adopt flared flow guide cylinders (101), a shell pass of the heat exchange section is communicated with an ascending pipe (2) and a descending pipe (3), and a vertical honeycomb-shaped heat exchange pipe (102) is installed in the heat exchange section.
3. The medium-pressure waste heat recovery device suitable for carbon black production according to claim 1, wherein: and a water supplementing pipe (402) is arranged in the middle of the front end of the steam-water separation pressure stabilizing device (4), and the water supplementing pipe (402) extends to the middle of the inner cavity of the steam-water separation pressure stabilizing device (4).
4. The medium pressure recuperator adapted for carbon black production as in claim 1, wherein: the upper end of steam-water separation pressure stabilizer (4) is equipped with steam outlet (401), and the upper end of steam outlet (401) merges into steam main, and the lower extreme of steam outlet (401) is equipped with collection cover (40102) wide under the narrow top.
5. The medium-pressure waste heat recovery device suitable for carbon black production according to claim 1, wherein: the inner cavity of the steam-water separation pressure stabilizing device (4), the ascending pipe (2), the descending pipe (3) and the heat exchange section form internal circulation.
6. The medium pressure recuperator adapted for carbon black production as in claim 1, wherein: the mounting position of the steam-water separation pressure stabilizing device (4) is higher than the upper end of the waste heat recoverer (1).
7. The medium-pressure waste heat recovery device suitable for carbon black production according to claim 1, wherein: and a liquid level meter is arranged in the steam-water separation pressure stabilizing device (4).
8. The medium pressure recuperator adapted for carbon black production as in claim 1, wherein: a heat-insulating layer (403) is arranged in a shell of the steam-water separation pressure stabilizing device (4), and heat-insulating cotton is filled in the heat-insulating layer (403).
9. The medium pressure recuperator adapted for carbon black production as in claim 3, wherein: the novel water replenishing device is characterized in that blocking ball columns (501) are uniformly and upwards arranged on the top plane of the partition plate (5) at intervals, the upper ends of the blocking ball columns (501) are of ball head structures, partition columns (503) are symmetrically and fixedly arranged on the top plane of the partition plate (5) in the front-back direction, and the inner end of the water replenishing pipe (402) is located in an area between the front partition column and the rear partition column (503).
10. The medium pressure recuperator adapted for carbon black production as in claim 1, wherein: an arc-shaped condensing plate (6) is arranged at the top of the rear end of the inner cavity of the steam-water separation pressure stabilizing device (4), and a gap between the rear end of the partition plate (5) and the steam-water separation pressure stabilizing device (4) is divided into two parts under the condensing plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211601507.3A CN115949927A (en) | 2022-12-13 | 2022-12-13 | Medium-pressure waste heat recoverer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211601507.3A CN115949927A (en) | 2022-12-13 | 2022-12-13 | Medium-pressure waste heat recoverer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115949927A true CN115949927A (en) | 2023-04-11 |
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ID=87288749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211601507.3A Pending CN115949927A (en) | 2022-12-13 | 2022-12-13 | Medium-pressure waste heat recoverer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115949927A (en) |
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2022
- 2022-12-13 CN CN202211601507.3A patent/CN115949927A/en active Pending
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