CN210107352U - Central heating system of polyester device - Google Patents
Central heating system of polyester device Download PDFInfo
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- CN210107352U CN210107352U CN201920367259.8U CN201920367259U CN210107352U CN 210107352 U CN210107352 U CN 210107352U CN 201920367259 U CN201920367259 U CN 201920367259U CN 210107352 U CN210107352 U CN 210107352U
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Abstract
The utility model discloses a polyester device central heating system, including the boiler island, the conduction oil system of many sets of polyester devices, the conduction oil system of polyester device includes the polyester device, steam conduction oil heat exchanger and circulating pump, the conduction oil exit linkage of polyester device conduction oil import and steam conduction oil heat exchanger, the conduction oil export of polyester device passes through the circulation line and is connected with the conduction oil import of steam conduction oil heat exchanger, the circulating pump sets up on the circulation pipeline, still include steady voltage return water device and condensate circulating pump, boiler island steam outlet passes through the steam conduit and is connected with the steam inlet of each steam conduction oil heat exchanger, the steam outlet of steam conduction oil heat exchanger passes through the condensate pipe and is connected with steady voltage return water device water inlet, steady voltage return water device's delivery port passes through the condensate circulating pump and is connected with boiler. The central heating system of the polyester device can fully exert the operation efficiency of a high-efficiency large coal-fired boiler, thereby obviously reducing the production cost of polyester.
Description
The technical field is as follows:
the utility model relates to a polyester device central heating system.
Background art:
the polyester device is a set of 30 ten thousand tons/year polyester filament polymerization and spinning device which can be used by a large household, and the energy consumption of the device reaches 2000 ten thousand kilocalories/hour. The energy structure of China is characterized by more coal and less gas, according to the current requirements on new coal-fired boilers, the single load of a high-efficiency large-scale boiler encouraged by policies exceeds the heat consumption of one set of polyester device, the advantages of independent use of power consumption, personnel management and the like are not obvious, and the stable control of the device is not facilitated, so that the heat mode of the polyester device can be developed towards the direction of centralized heat supply, namely, a plurality of sets of devices share a boiler island consisting of a plurality of coal-fired boilers. However, the central heating of a plurality of devices needs to solve the problems of heat exchange and mutual interference caused by fluctuation among the devices.
The utility model has the following contents:
the utility model aims to solve the technical problem that a can the high-efficient large-scale coal fired boiler's of full play operating efficiency is provided to show the polyester device central heating system who reduces polyester manufacturing cost.
The technical proposal of the utility model is that a central heating system of a polyester device is provided, which comprises a boiler island, the conduction oil system of many sets of polyester devices, the conduction oil system of polyester device includes the polyester device, steam conduction oil heat exchanger and circulating pump, the conduction oil import of polyester device and the conduction oil exit linkage of steam conduction oil heat exchanger, the conduction oil export of polyester device passes through the circulation pipeline and is connected with the conduction oil import of steam conduction oil heat exchanger, the circulating pump sets up on the circulation pipeline, still include steady voltage return water device and condensate circulating pump, boiler island steam outlet passes through the steam conduit and is connected with the steam inlet of each steam conduction oil heat exchanger, the steam outlet of steam conduction oil heat exchanger passes through the condensate pipe and is connected with steady voltage return water device water inlet, the delivery port of steady voltage return water device passes through the condensate circulating pump and is.
Compared with the prior art after the structure more than adopting, the utility model has the advantages of it is following: the high-temperature high-pressure steam generated by boiler islands formed by a plurality of large coal-fired boilers is used as a primary heat medium, latent heat is transferred to secondary heat medium heat transfer oil through a plurality of heat exchange stations, namely steam heat transfer oil heat exchangers, and is respectively supplied to each set of polyester device for heating through the secondary heat medium.
Preferably, the heat transfer oil recovery system further comprises a heat transfer oil accident receiving groove and a transfer pump which are arranged at each steam heat transfer oil heat exchanger and used for recovering and transferring heat transfer oil in an accident state.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
The specific implementation mode is as follows:
the invention will be further explained with reference to the drawings and the detailed description below:
as shown in figure 1, a centralized heat supply system of a polyester device comprises a boiler island 1 and a heat conduction oil system 2 of a plurality of sets of polyester devices, wherein the heat conduction oil system of the polyester device comprises a polyester device 21, a steam heat conduction oil heat exchanger 22 and a circulating pump 23, a heat conduction oil inlet of the polyester device 21 is connected with a heat conduction oil outlet of the steam heat conduction oil heat exchanger 22, a heat conduction oil outlet of the polyester device 21 is connected with a heat conduction oil inlet of the steam heat conduction oil heat exchanger 22 through a circulating pipeline 24, the circulating pump 23 is arranged on the circulating pipeline 24, the centralized heat supply system also comprises a pressure-stabilizing water return device 3 and a condensate circulating pump 4, a steam outlet of the boiler island 1 is connected with a steam inlet of each steam heat conduction oil heat exchanger through a steam pipeline, a steam outlet of the steam heat conduction oil heat exchanger 22 is connected with a water inlet of, the connection mode of the concrete pipelines is connected according to the conventional mode in the polyester field, such as flange connection, welding and the like. And, preferably, the heat transfer oil recovery device further comprises a heat transfer oil accident receiving groove and a transfer pump which are arranged at each steam heat transfer oil heat exchanger and used for recovering and transferring heat transfer oil in an accident state.
The utility model arranges the heat supply boilers of a plurality of sets of polyester devices in a centralized way to form a boiler island, the boiler island generates high temperature and high pressure steam to heat the heat conducting oil system of each set of polyester device through the heat exchange station, and the heated high pressure condensed water returns to the boiler island to be heated continuously to generate steam to form circulation; and the heat conduction oil system after heat exchange is circularly sent to each set of polyester device for heat supply, and the heat supply stability of the polyester devices is ensured by controlling the temperature of the heat conduction oil at the outlet of the heat exchange station. The high-temperature high-pressure steam system is provided with the pressure-stabilizing water return device, so that the system pressure is stable in the starting and stopping process and the load change process of the unit, the water hammer phenomenon of a steam-water system is avoided, the pipeline is prevented from being damaged, and the high-temperature high-pressure condensate at the outlet of the steam heat-conducting oil heater is sent back to the boiler for cyclic utilization. A closed steam-water circulating system is formed between the boiler and the heat exchanger.
Specifically, 3 large-scale coal fired boilers (2 with 1) of 76t/h are arranged to construct a boiler island, the structure and the technology for constructing the boiler island are the prior art, the innovation point of the application is that the boiler island comprises a boiler body, a heat exchanger body, a steam-water system, a flue gas system, a combustion system, a cooling water system, a sampling and dosing system, an electrical system, an instrument and control system, a communication system, a fire-fighting system and the like, 1 set of distributed control DCS system can be arranged, and control, monitoring, alarming, interlocking and the like required by the process are intensively monitored, controlled and managed by the DCS.
The boiler island generates 13.7MPa superheated steam at 380 ℃ and the superheated steam is sent to each steam heat-conducting oil heater through a pipeline and used for heating a secondary heat medium system, and the supply return temperature of the secondary heat medium is 320/290 ℃. The steam high-pressure condensate is directly returned to the boiler island through the condensate pipe and is used for boiler water supply.
The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. All the equivalent structures or equivalent flow changes made by using the contents of the specification and the attached drawings of the utility model are included in the patent protection scope of the utility model.
Claims (2)
1. The utility model provides a polyester device central heating system, includes the conduction oil system of boiler island, many sets of polyester device, and the conduction oil system of polyester device includes the polyester device, steam conduction oil heat exchanger and circulating pump, the conduction oil import of polyester device and the conduction oil exit linkage of steam conduction oil heat exchanger, the conduction oil export of polyester device is through the conduction oil access connection of circulating line and steam conduction oil heat exchanger, the circulating pump sets up on the circulating line its characterized in that: still include steady voltage return water device and condensate circulating pump, boiler island steam outlet passes through the steam conduit and is connected with the steam inlet of each steam conduction oil heat exchanger, and steam outlet of steam conduction oil heat exchanger passes through the condensate pipe and is connected with steady voltage return water device water inlet, and steady voltage return water device's delivery port passes through the condensate circulating pump and is connected with boiler island water inlet.
2. The polyester plant central heating system of claim 1, wherein: the steam heat conduction oil recovery system further comprises a heat conduction oil accident receiving groove and a conveying pump which are configured at each steam heat conduction oil heat exchanger and used for recovering and conveying heat conduction oil in an accident state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920367259.8U CN210107352U (en) | 2019-03-22 | 2019-03-22 | Central heating system of polyester device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920367259.8U CN210107352U (en) | 2019-03-22 | 2019-03-22 | Central heating system of polyester device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210107352U true CN210107352U (en) | 2020-02-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920367259.8U Active CN210107352U (en) | 2019-03-22 | 2019-03-22 | Central heating system of polyester device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210107352U (en) |
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2019
- 2019-03-22 CN CN201920367259.8U patent/CN210107352U/en active Active
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