CN217653828U - Negative pressure steam generator device applied to wet saturated flue gas - Google Patents
Negative pressure steam generator device applied to wet saturated flue gas Download PDFInfo
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- CN217653828U CN217653828U CN202221498830.8U CN202221498830U CN217653828U CN 217653828 U CN217653828 U CN 217653828U CN 202221498830 U CN202221498830 U CN 202221498830U CN 217653828 U CN217653828 U CN 217653828U
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Abstract
The utility model relates to the field of heat exchangers, and discloses a negative pressure steam generator device applied to wet saturated flue gas, which comprises a negative pressure steam generator body, an air inlet channel end plate, an air outlet channel end plate, a heat exchange tube bundle, a water distribution pipe, a water seal device and a negative pressure steam outlet, wherein the air inlet channel end plate and the air outlet channel end plate are arranged in the negative pressure steam generator body; the water distribution pipe is arranged at the upper part of the negative pressure steam generator body and used for feeding feed water into the negative pressure steam generator body and submerging the heat exchange pipe bundle, the negative pressure steam outlet is arranged at the top of the negative pressure steam generator body and used for discharging generated steam, and the water sealing device is arranged at the smoke outlet of the negative pressure steam generator and used for discharging condensed water and sealing water. The utility model discloses but the heat in the degree of depth recovery flue gas produces negative pressure steam, improves the whole efficiency of supporting system.
Description
Technical Field
The utility model relates to a heat exchanger field, concretely relates to be applied to negative pressure steam generator device of wet saturated flue gas.
Background
In many contain salt waste liquid evaporation plant, the flue gas moisture content is high, wants make full use of flue gas waste heat can produce a large amount of problems, therefore its exhaust gas temperature often is higher, can not make full use of the waste heat of system.
Because the water content of the flue gas is high, a large amount of condensed water is generated in the heat exchange process and is difficult to treat; the waste heat of the flue gas is fully utilized, the temperature of the flue gas is reduced to be lower than 100 ℃, if water is used for heat exchange, the water is only in a liquid state under normal pressure, and in the subsequent process of utilizing the liquid water, the phase change process does not exist, so that the heat exchange efficiency is low, and a large amount of cost is required to be spent for manufacturing a large-scale heat exchanger.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model discloses a negative pressure steam generator device applied to wet saturated flue gas, which makes a targeted drainage structure for the problem of high water content of the flue gas; low to liquid water heat exchange efficiency, the utility model discloses on make corresponding evaporation structure, only need last take noncondensable gas out on next-level heat exchanger, maintain certain vacuum, this negative pressure steam generator just can obtain the negative pressure steam that is less than 100 ℃ to improve heat exchange efficiency.
A negative pressure steam generator device applied to wet saturated flue gas comprises a negative pressure steam generator body, an air inlet pipe box end plate, an air outlet pipe box end plate, a heat exchange pipe bundle, a water distribution pipe, a water seal device and a negative pressure steam outlet, wherein the air inlet pipe box end plate and the air outlet pipe box end plate are arranged in the negative pressure steam generator body; the water distribution pipe is arranged at the upper part of the negative pressure steam generator body and used for feeding feed water into the negative pressure steam generator body and submerging the heat exchange pipe bundle, the negative pressure steam outlet is arranged at the top of the negative pressure steam generator body and used for discharging generated steam, and the water sealing device is arranged at the smoke outlet of the negative pressure steam generator and used for discharging condensed water and sealing water.
Furthermore, the fume side inlet and outlet of the negative pressure steam generator are horn-shaped inlet bell mouth and outlet bell mouth.
Furthermore, the heat exchange tube bundle is installed in a slightly inclined mode, and condensed water in the smoke is guided to the water sealing device.
Furthermore, the bottom of the negative pressure steam generator body is also provided with a discharge port.
Furthermore, the heat exchange tube bundle, the air inlet pipe box end plate and the air outlet pipe box end plate can be removed as a whole after being detached from the negative pressure steam generator body.
Further, water seal arrangement includes comdenstion water entry, comdenstion water baffle, inner skleeve, comdenstion water export, the comdenstion water baffle is annular structure, installs in the inner skleeve top, links to each other with the inner skleeve welding, and comdenstion water baffle upper portion straight section of thick bamboo turns over the shirt rim and fixes between two flange of comdenstion water entry, plays fixed and sealed effect, the comdenstion water export is installed on water seal arrangement shell upper portion.
The utility model has the advantages that:
1. the evaporation temperature is low, and the method can be used for recovering extremely low-grade heat value.
2. The heat exchange system is immersed for heat exchange, saturated liquid and saturated flue gas are filled in the inner side and the outer side of the heat exchange tube, and the heat transfer efficiency is high.
3. The heat exchange tube bundle can be wholly moved out, and the maintenance and the cleaning are convenient
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of a negative pressure steam generator
The negative pressure steam generator comprises a negative pressure steam generator body 401, an air inlet pipe box end plate 402, an air outlet pipe box end plate 403, an air inlet bell mouth 404, an air outlet bell mouth 405, a heat exchange pipe bundle 406, a water distribution pipe 407, a water sealing device 408, a discharge port 409, a negative pressure steam outlet 410, a condensed water inlet 408-1, a condensed water baffle 408-2, an inner sleeve 408-3 and a condensed water outlet 408-4.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and detailed description, which will be understood as being illustrative only and not limiting in scope. It will be appreciated by those skilled in the art that changes may be made to the embodiments described below, or equivalents may be substituted for elements thereof, and any changes, equivalents, improvements, system omissions, and the like that fall within the spirit and scope of the present invention are intended to be embraced therein. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
One side of the negative pressure steam generator is introduced with saturated flue gas with high water content, one side is introduced with feed water, the discharged negative pressure steam enters the next-stage heat exchanger, the next-stage heat exchanger continuously pumps out non-condensable gas, and a certain vacuum degree is maintained. The negative pressure steam generator mainly comprises: the negative pressure steam generator comprises a negative pressure steam generator body 401, an air inlet pipe box end plate 402, an air outlet pipe box end plate 403, an air inlet bell mouth 404, an air outlet bell mouth 405, a heat exchange pipe bundle 406, a water distribution pipe 407, a water sealing device 408, a discharge port 409 and a negative pressure steam outlet 410.
The saturated flue gas flows through the heat exchange tube bundle 406, and the saturated water is in the negative pressure steam generator body 401 bin. The top of the negative pressure steam generator is provided with a water distribution pipe 407 which can better feed the feed water into the cabin of the negative pressure steam generator body 401. The flue gas inlet and outlet of the negative pressure steam generator are both in a bell mouth shape (an inlet bell mouth 404 and an outlet bell mouth 405), so that water in the flue gas can better flow into the water seal device. The heat exchange tube bundle 406 is arranged between the air inlet channel box end plate 402 and the air outlet channel box end plate 403, the heat exchange tube bundle 406 is installed in a slightly inclined mode, recovery of condensed water is facilitated, the recovered saturated flue gas condensed water flows into the flue gas outlet water sealing device 408, and the condensed water is discharged by the water sealing device 408. During maintenance, the heat exchange tube bundle 406, the inlet header end plate 402 and the outlet header end plate 403 can be integrally removed from the top, so that the heat exchange tube bundle is convenient to clean.
The water sealing device 408 is of a sleeve type structure and comprises a condensed water inlet 408-1, a condensed water baffle 408-2, an inner sleeve 408-3 and a condensed water outlet 408-4. The condensed water baffle 408-2 is of an annular structure, is arranged above the inner sleeve 408-3 and is welded with the inner sleeve 408-3, and a turned-out skirt edge of a straight cylinder section at the upper part of the condensed water baffle 408-2 is fixed between two connecting flanges of the condensed water inlet 408-1 to play a role in fixing and sealing. The condensed water outlet 408-4 is arranged at the upper part of the shell of the water seal device.
Feed water enters from a water distribution pipe 407 on the upper part of the negative pressure steam generator body 401, heat exchange pipes are immersed outside the heat exchange pipe bundle 406, negative pressure steam is evaporated through heating of flue gas and is discharged from a negative pressure steam outlet 410 on the top, and a discharge port 409 is arranged at the bottom of the negative pressure steam generator body 401 and used for discharging accumulated water during maintenance.
The flue gas enters a negative pressure steam generator to deeply recover waste heat and generate negative pressure saturated steam. The designed flue gas of the negative pressure steam generator is 90 ℃ wet saturated flue gas, the volume fraction of the water vapor in the flue gas is about 70%, and the water content is huge. When the flue gas is cooled in the negative pressure steam generator, a large amount of moisture in the flue gas is condensed and separated out, condensed water is discharged from a water seal device 408 of the negative pressure steam generator, and the temperature of the cooled flue gas is about 75 ℃.
Claims (6)
1. The negative pressure steam generator device is characterized by comprising a negative pressure steam generator body (401), an air inlet channel end plate (402), an air outlet channel end plate (403), a heat exchange tube bundle (406), a water distribution pipe (407), a water seal device (408) and a negative pressure steam outlet (410), wherein a flue gas side inlet and a flue gas side outlet are respectively arranged at the outer two ends of the negative pressure steam generator body (401), the air inlet channel end plate (402) and the air outlet channel end plate (403) are arranged at the inner two ends of the negative pressure steam generator body (401), the heat exchange tube bundle (406) is arranged between the air inlet channel end plate (402) and the air outlet channel end plate (403), and flue gas flows in the heat exchange tube bundle (406); the water distribution pipe (407) is arranged on the upper portion of the negative pressure steam generator body (401) and used for feeding water into the negative pressure steam generator body and submerging the heat exchange pipe bundle (406), the negative pressure steam outlet (410) is arranged on the top of the negative pressure steam generator body (401) and used for discharging generated steam, and the water sealing device (408) is arranged in the smoke side outlet of the negative pressure steam generator and used for discharging condensed water and performing water sealing.
2. The negative pressure steam generator device applied to wet saturated flue gas of claim 1, wherein the flue gas side inlet and the flue gas side outlet are respectively a flared inlet bell mouth (404) and an outlet bell mouth (405).
3. The negative pressure steam generator device applied to wet saturated flue gas according to claim 1, wherein the heat exchange tube bundle (406) is installed with a slight inclination to guide the condensed water in the flue gas to the water seal device (408).
4. The negative pressure steam generator device applied to wet saturated flue gas according to claim 1, wherein the bottom of the negative pressure steam generator body (401) is further provided with a discharge port (409).
5. The negative pressure steam generator device for wet saturated flue gas according to claim 1, wherein the heat exchange tube bundle (406), the inlet header end plate (402), and the outlet header end plate (403) are removable as a whole after being disassembled from the negative pressure steam generator body (401).
6. The negative pressure steam generator device applied to wet saturated flue gas of claim 1, wherein the water seal device (408) comprises a condensed water inlet (408-1), a condensed water baffle (408-2), an inner sleeve (408-3) and a condensed water outlet (408-4), the condensed water baffle (408-2) is of an annular structure, is mounted above the inner sleeve (408-3) and is connected with the inner sleeve (408-3) in a welding manner, a turned-out skirt of a straight cylinder section at the upper part of the condensed water baffle (408-2) is fixed between two connecting flanges of the condensed water inlet (408-1) to play a role in fixing and sealing, and the condensed water outlet (408-4) is mounted at the upper part of a shell of the water seal device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221498830.8U CN217653828U (en) | 2022-06-15 | 2022-06-15 | Negative pressure steam generator device applied to wet saturated flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221498830.8U CN217653828U (en) | 2022-06-15 | 2022-06-15 | Negative pressure steam generator device applied to wet saturated flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217653828U true CN217653828U (en) | 2022-10-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221498830.8U Active CN217653828U (en) | 2022-06-15 | 2022-06-15 | Negative pressure steam generator device applied to wet saturated flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217653828U (en) |
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2022
- 2022-06-15 CN CN202221498830.8U patent/CN217653828U/en active Active
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