CN211232824U - Exhaust steam recovery device - Google Patents
Exhaust steam recovery device Download PDFInfo
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- CN211232824U CN211232824U CN201921849775.0U CN201921849775U CN211232824U CN 211232824 U CN211232824 U CN 211232824U CN 201921849775 U CN201921849775 U CN 201921849775U CN 211232824 U CN211232824 U CN 211232824U
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Abstract
The utility model discloses a dead steam recovery unit relates to the technical field of steam plant system, solves prior art and does not carry out energy recovery to the discharge product in the body system and utilizes. The system comprises a first heat exchanger, a second heat exchanger, a third heat exchanger and a plurality of deaerators which are communicated with one another, wherein the blow-down pipes of the deaerators are communicated with one another, a system refrigerant medium obtained after the deaerators are deaerated is conveyed to a steam boiler for steam preparation, and the first heat exchanger is externally connected with a product produced or discharged by a liquid or gas production process system to heat the refrigerant medium; the second heat exchanger is connected with the continuous drainage of the steam boiler to heat the system refrigerant medium; and the third heat exchanger is communicated with the header pipe of the emptying pipe and can heat the refrigerant medium of the system. The utility model discloses be used for perfecting steam power generation technology's function, satisfy people to the demand of waste energy reuse.
Description
Technical Field
The utility model belongs to the technical field of steam plant's technique and specifically relates to a steam exhaust recovery unit.
Background
The waste steam is superheated steam with thermal potential energy, and the superheated steam is introduced into utilization equipment through a pipeline, so that the thermal potential energy is converted into kinetic energy. Dead steam, as the name implies, is the atmospheric gas after the high pressure steam is utilized. At present, most of systems for carrying out process production by utilizing hot steam are used in China, for example, in a thermal power plant in a steam power generation process, desalted water is deoxidized by utilizing a deaerator and then is conveyed to a steam boiler, and steam is used for power generation after steam is prepared, for example, the pressure after steam preparation is generally 90kg, and the pressure after steam preparation is 10kg (dead steam), and the used steam is directly discharged by the modern process without being reused, so that a large amount of energy is wasted.
In view of this, the present invention is especially provided.
SUMMERY OF THE UTILITY MODEL
The application provides a steam exhaust recovery device, solves prior art and does not carry out energy recycle's technical problem to the exhaust product. The technical scheme of the scheme has a plurality of technical effects, which are shown below.
The utility model provides an exhaust steam recovery unit for steam preparation system, includes first heat exchanger, second heat exchanger, third heat exchanger and a plurality of oxygen-eliminating device that communicate each other, and is a plurality of the blow-down pipe of oxygen-eliminating device communicates each other, and is a plurality of system refrigerant medium after the oxygen-eliminating device deoxidization is carried to steam boiler and is carried out steam preparation, wherein:
the system refrigerant medium is sequentially conveyed to the deaerators through the first heat exchanger, the second heat exchanger and the third heat exchanger to be deaerated;
the first heat exchanger is externally connected with a product produced or discharged by a liquid or gas production process system to heat the refrigerant medium;
the second heat exchanger is connected with the continuous drainage of the steam boiler to heat the system refrigerant medium;
and the third heat exchanger is communicated with the header pipe of the emptying pipe and can heat the refrigerant medium of the system.
In a preferred or optional embodiment, a condensed water automatic pump is installed on a pipeline between the third heat exchanger and the deaerators, and a blow-down pipe of at least one deaerator is communicated with the condensed water automatic pump to provide working power for the condensed water automatic pump.
In a preferred or alternative embodiment, the first heat exchanger is externally connected with a desulfurization condensate in a desulfurization process system, and the desulfurization condensate can heat the system refrigerant medium through the first heat exchanger.
In a preferred or alternative embodiment, the plurality of deaerators is two in number.
In a preferred or alternative embodiment, the system coolant medium is demineralized water.
In a preferred or alternative embodiment, the steam exhaust recovery device further comprises a casing, and the steam exhaust recovery device is installed in the casing.
The beneficial effect that this application was sent is as follows:
the heat energy of the system is recovered through a first heat exchanger, a second heat exchanger, a third heat exchanger and a plurality of deaerators which are communicated with one another, wherein the first heat exchanger can be externally connected with a process technology related to a thermal power plant, for example, desulfurization condensate is conveyed to the first heat exchanger and then conveyed back to the original system;
the second heat exchanger is connected with the continuous drainage of the steam boiler, and the discharged product is effectively utilized to heat the system refrigerant;
the third heat exchanger is communicated with an emptying pipe of the deaerator, and recovers waste gas discharged by the deaerator (the waste gas refers to exhaust steam), so as to heat a system refrigerant;
according to the scheme, the temperature of a refrigerant medium of the system is improved through three times of heating, and the first heat exchanger and the second heat exchanger recycle waste liquid; the third heat exchanger is used for recovering the waste gas, thereby realizing the recovery of waste heat energy in the live steam process, wherein the heat energy comprises the heat energy of the waste gas and the heat energy of the waste water.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the exhaust steam recovery device of the present invention;
fig. 2 is the construction schematic diagram of the exhaust steam recovery device of the utility model.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.
Referring to the exhaust steam recovery device shown in fig. 1 for steam preparation system, including first heat exchanger 1, second heat exchanger 2, third heat exchanger 3 and a plurality of oxygen-eliminating devices 4 that communicate each other, the blow-down pipe 41 of a plurality of oxygen-eliminating devices 4 communicates each other, and the system refrigerant medium after a plurality of oxygen-eliminating devices 4 deoxidization is carried to steam boiler and is carried out steam preparation, wherein:
the refrigerant medium of the system is sequentially conveyed to a plurality of deaerators through a first heat exchanger 1, a second heat exchanger 2 and a third heat exchanger 3 to be deaerated. The system refrigerant medium, such as demineralized water, heats the demineralized water by utilizing waste energy, so that the temperature of the demineralized water entering the deaerator is increased, and the energy consumption of the deaerator 4 is reduced;
the first heat exchanger 1 is externally connected with a product produced or discharged by a liquid or gas production process system to heat the cold medium. The products produced or excluded from a liquid or gas production process system are: auxiliary processes related to steam production, for example, desulfurization condensate in a desulfurization process system externally connected to the first heat exchanger 1, wherein the desulfurization condensate can heat a system refrigerant medium through the first heat exchanger 1 as primary heating;
the second heat exchanger 2 is connected with the continuous drainage of the steam boiler to heat the system refrigerant medium as secondary heating;
the third heat exchanger 3 is communicated with the main pipe of the blow-down pipe 41, and can heat the system cold medium as three times of heating, and the third time of heating is to heat the system cold medium by fully utilizing waste gas, namely, the exhaust gas is recycled.
In a preferred or alternative embodiment, an automatic condensed water pump 5 is installed on a pipeline between the third heat exchanger 3 and the deaerators 4, and a blow-down pipe of at least one deaerator 4 is communicated with the automatic condensed water pump 5 to provide working power for the automatic condensed water pump. The automatic condensed water pump does not need to use electric energy, only uses steam of a system as kinetic energy of work, and the automatic condensed water pump 5 increases demineralized water conveying to the deaerator. The number of the deaerators 4 is generally two, the deaerators can heat oxygen in the demineralized water to discharge hot steam in a deaerating process, on one hand, waste gas discharged by the deaerators is recycled and communicated with the third heat exchanger 3 to heat the demineralized water entering the deaerators 4, on the other hand, the used hot steam is recycled, for example, in a steam power generation system of a thermal power plant, the pressure of the superheated steam discharged from a steam boiler is 80-100kg, the pressure after the use is 10kg, and the superheated steam is conveyed to the third heat exchanger 3 to further heat the demineralized water, so that the energy consumption of the deaerators 4 is greatly reduced.
In a preferred or alternative embodiment, the system refrigerant medium is demineralized water, and the device is mainly used for a thermal power plant, and the preparation is to generate electricity by using hot steam.
The dead steam recovering apparatus includes casing and partial or all of the dead steam recovering devices installed inside the casing, for example, electric control valves and temperature gauges installed in the opposite positions are installed in the technological apparatus to realize remote automatic control, and the system is controlled automatically via the remote control of the valves.
The waste steam recovery equipment comprises a shell and the above part or all of the waste steam recovery device or a steam power generation system or a thermal power plant power generation system which are arranged in the shell, and comprises the above part or all of the waste steam recovery device, and in a steam using system, exhausted steam and exhausted hot water are recycled, so that a refrigerant medium of a secondary heating system is used, the energy consumption of oxygen removal is finally reduced, and the energy is saved. The technical scheme of the scheme is mainly aimed at a process system using hot steam, is not limited to the steam power generation system used in the thermal power plant, and can be used in other systems adopting steam processes.
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (6)
1. The utility model provides an exhaust steam recovery unit for steam preparation system, its characterized in that, including first heat exchanger, second heat exchanger, third heat exchanger and a plurality of oxygen-eliminating device that communicate each other, it is a plurality of the blow-down pipe of oxygen-eliminating device communicates each other, and is a plurality of system refrigerant medium after the oxygen-eliminating device deoxidization is carried to steam boiler and is carried out steam preparation, wherein:
the system refrigerant medium is sequentially conveyed to the deaerators through the first heat exchanger, the second heat exchanger and the third heat exchanger to be deaerated;
the first heat exchanger is externally connected with a product produced or discharged by a liquid or gas production process system to heat the refrigerant medium;
the second heat exchanger is connected with the continuous drainage of the steam boiler to heat the system refrigerant medium;
the third heat exchanger is communicated with the main pipe of the emptying pipe, and can heat the refrigerant medium of the system by utilizing exhausted steam.
2. The exhaust steam recovery device according to claim 1, wherein an automatic condensed water pump is installed on a pipeline between the third heat exchanger and the deaerators, and an emptying pipe of at least one deaerator is communicated with the automatic condensed water pump to provide working power for the automatic condensed water pump.
3. The exhaust steam recovery device according to claim 1, wherein the first heat exchanger is externally connected with a desulfurization condensate in a desulfurization process system, and the desulfurization condensate can heat the system refrigerant medium through the first heat exchanger.
4. The exhaust steam recovery device of claim 3, wherein the plurality of deaerators is two in number.
5. The dead steam recovery device of claim 1 wherein the system coolant medium is demineralized water.
6. The exhaust steam recovery device according to any one of claims 1 to 5, further comprising a housing in which the exhaust steam recovery device is mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921849775.0U CN211232824U (en) | 2019-10-31 | 2019-10-31 | Exhaust steam recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921849775.0U CN211232824U (en) | 2019-10-31 | 2019-10-31 | Exhaust steam recovery device |
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| Publication Number | Publication Date |
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| CN211232824U true CN211232824U (en) | 2020-08-11 |
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| CN201921849775.0U Active CN211232824U (en) | 2019-10-31 | 2019-10-31 | Exhaust steam recovery device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114659092A (en) * | 2022-03-18 | 2022-06-24 | 灵谷化工集团有限公司 | Deaerator exhaust steam emptying recovery device and recovery method thereof |
-
2019
- 2019-10-31 CN CN201921849775.0U patent/CN211232824U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114659092A (en) * | 2022-03-18 | 2022-06-24 | 灵谷化工集团有限公司 | Deaerator exhaust steam emptying recovery device and recovery method thereof |
| CN114659092B (en) * | 2022-03-18 | 2024-04-19 | 灵谷化工集团有限公司 | Deaerator exhaust steam emptying and recycling device and method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Qiang Inventor before: Li Qiang Inventor before: Qiu Yalong Inventor before: Wang Tao |
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| CB03 | Change of inventor or designer information |