CN215723154U - Pharmaceutical factory preparation workshop steam condensate waste heat recovery system - Google Patents
Pharmaceutical factory preparation workshop steam condensate waste heat recovery system Download PDFInfo
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- CN215723154U CN215723154U CN202121457178.0U CN202121457178U CN215723154U CN 215723154 U CN215723154 U CN 215723154U CN 202121457178 U CN202121457178 U CN 202121457178U CN 215723154 U CN215723154 U CN 215723154U
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Abstract
The utility model discloses a system for recovering waste heat of steam condensate in a pharmaceutical factory preparation workshop, which comprises a steam distributing cylinder, wherein an air inlet of the steam distributing cylinder is connected with a main steam pipe, a water inlet of a first steam-water heat exchanger is connected with a low-temperature side of a first-stage water-water heat exchanger and then is connected with a hot water return pipe of a workshop air conditioner, a water outlet of the first steam-water heat exchanger is connected with a hot water supply pipe of the workshop air conditioner, a water inlet of a second steam-water heat exchanger is connected with a low-temperature side of a second-stage water-water heat exchanger and then is connected with a hot water return pipe of the workshop process cleaning, a water outlet of the second steam-water heat exchanger is connected with a hot water supply pipe of the workshop process cleaning, a water inlet end of the high-temperature side of the first-stage water-water heat exchanger is connected with a water outlet of a condensate tank through a condensate pipe, and a water outlet end of the high-temperature side of the first-stage water heat exchanger is connected with a circulating water supply pipe of the workshop. The waste heat of the steam condensate is utilized in a gradient manner, so that the utilization rate of energy is improved.
Description
Technical Field
The utility model relates to the technical field of waste heat recovery in the pharmaceutical industry, in particular to a waste heat recovery system for steam condensate in a pharmaceutical factory and preparation workshop.
Background
With the development of the technology in the medical industry, the application of steam in the medical industry is more and more extensive. After the latent heat of vaporization is released from the steam in the steam equipment, the steam becomes saturated condensed water with the same temperature and pressure, the heat of the condensed water can reach 20% -30% of the total heat of the steam, and the higher the pressure and the temperature are, the more the heat of the condensed water is. Because the temperature of the steam condensate water is usually about 100 ℃, the waste heat in the steam condensate water cannot be fully recovered by using a single heat recovery method, and thus, the recovery utilization rate of a low-grade heat source can be effectively improved by jointly using a plurality of waste heat recovery modes.
In view of the above situation, some proposals have been made to provide a steam condensate waste heat recovery system in the design of pharmaceutical factory preparation plants. However, this solution also has several difficulties: firstly, the temperature of steam condensate is higher and is usually about 100 ℃, and the single heat recovery method cannot fully recover the waste heat in the steam condensate; and secondly, the steam is generally continuously used all the year round, and a waste heat recovery mode matched with the steam use working condition needs to be found.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a system for recovering the waste heat of steam condensate in a pharmaceutical factory workshop, which can improve the utilization rate of energy and achieve the effects of energy conservation and emission reduction by carrying out cascade utilization on the waste heat of the steam condensate.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a pharmaceutical factory preparation workshop steam condensate waste heat recovery system which the key lies in: the system comprises a steam-distributing cylinder, a first steam-water heat exchanger, a second steam-water heat exchanger, a primary water-water heat exchanger, a secondary water-water heat exchanger and a condensed water tank, wherein an air inlet of the steam-distributing cylinder is connected with a steam main pipe, a first steam outlet and a second steam outlet of the steam-distributing cylinder respectively supply steam required by production to the same or different preparation workshops through steam branch pipes, a third steam outlet and a fourth steam outlet of the steam-distributing cylinder are respectively connected to steam inlets of the first steam-water heat exchanger and the second steam-water heat exchanger through steam branch pipes, condensed water outlets of the first steam-water heat exchanger and the second steam-water heat exchanger are connected to a first water inlet of the condensed water tank, a water inlet of the first steam-water heat exchanger is connected with a water supply pipe of hot water of an air conditioner of the workshop after being connected with a low-temperature side of the primary water heat exchanger through a pipeline, and a water outlet of the first steam-water heat exchanger is connected with hot water of the air conditioner of the workshop, the water inlet of the second steam-water heat exchanger is connected with a workshop process cleaning hot water return pipe after being connected with the low-temperature side of the second steam-water heat exchanger through a pipeline, the water outlet of the second steam-water heat exchanger is connected with a workshop process cleaning hot water supply pipe, the water inlet end of the high-temperature side of the first-stage water-water heat exchanger is connected with the water outlet of the condensate tank through a condensate pipeline, a pressure water pump is arranged on the condensate pipeline, and the water outlet end of the high-temperature side of the first-stage water-water heat exchanger is connected with the workshop circulating water replenishing pipe after being connected with the high-temperature side of the second-stage water-water heat exchanger in series.
Furthermore, a pressure reducing component is arranged on each steam branch pipe.
Furthermore, the pressure reducing assembly comprises a first stop valve, a purifier, a pressure reducing valve, a safety valve and a second stop valve which are sequentially arranged along the steam conveying direction.
Furthermore, the water outlet of the steam distributing cylinder, the water outlet of each pressure reducing assembly, the water outlet of the first steam-water heat exchanger and the water outlet of the second steam-water heat exchanger are connected to the water inlet of the condensed water tank through the drainage assembly.
Furthermore, the drain assembly comprises a water pipeline and a bypass pipeline, a third stop valve, a drain device, a fourth stop valve and a check valve are sequentially arranged on the water pipeline, the bypass pipeline is provided with a fifth stop valve, the water inlet end of the bypass pipeline is connected with the water inlet end of the water pipeline, and the water outlet end of the bypass pipeline is connected to the water pipeline between the fourth stop valve and the check valve.
Furthermore, a spare pipeline is connected in parallel to the condensed water pipeline, and a spare water pump is arranged on the spare pipeline.
Furthermore, the second water inlet and the third water inlet of the condensation water tank are also connected with a workshop condensation water pipe.
The utility model has the following remarkable effects:
1. the waste heat recovery system has the advantages that the two stages of heat exchangers are connected in series, so that the temperatures of heat sources among the heat exchangers are different, hot water with different temperatures, such as air-conditioning hot water, process cleaning hot water and the like, is prepared, the cascade utilization of waste heat is realized, and meanwhile, the cooled condensed water is used as circulating water for supplementing water, so that the energy is recovered to the maximum extent, the energy consumption is reduced, and the cost is saved for pharmaceutical enterprises;
2. the waste heat of the high-temperature steam condensate is utilized in a cascade manner, so that the recovery efficiency is higher;
3. the heat of the high-temperature condensed water is recovered, and the cooled condensed water is used as the circulating water for supplementing water, so that the water supplementing quantity of the circulating water is saved, and the purposes of energy conservation, consumption reduction and emission reduction are achieved.
Drawings
FIG. 1 is a schematic view of the piping structure of the present invention;
FIG. 2 is a schematic view of the piping structure of the pressure relief assembly;
fig. 3 is a schematic view of a piping structure of the hydrophobic block.
Detailed Description
The following provides a more detailed description of the embodiments and the operation of the present invention with reference to the accompanying drawings.
As shown in fig. 1, a system for recovering waste heat from steam condensate in a pharmaceutical factory formulation workshop comprises a steam-distributing cylinder 2, a first steam-water heat exchanger 5, a second steam-water heat exchanger 6, a primary water-water heat exchanger 7, a secondary water-water heat exchanger 8 and a condensate water tank 9, wherein an air inlet of the steam-distributing cylinder 2 is connected with a steam main pipe 1, a first steam outlet and a second steam outlet of the steam-distributing cylinder 2 respectively supply steam required for production to the same or different formulation workshops through steam branch pipes 3, a third steam outlet and a fourth steam outlet of the steam-distributing cylinder 2 are respectively connected to steam inlets of the first steam-water heat exchanger 5 and the second steam-water heat exchanger 6 through steam branch pipes 3, condensate water outlets of the first steam-water heat exchanger 5 and the second steam-water heat exchanger 6 are connected to a first water inlet of the condensate water tank 9, a water inlet of the first steam-water heat exchanger 5 is connected with a low-temperature side of the primary water heat exchanger 7 through a pipeline and then connected with an air-conditioning hot water return pipe 10, the water outlet of the first steam-water heat exchanger 5 is connected with a workshop air conditioner hot water supply pipe 11, the water inlet of the second steam-water heat exchanger 6 is connected with a workshop process cleaning hot water return pipe 12 after being connected with the low-temperature side of the second steam-water heat exchanger 8 through a pipeline, the water outlet of the second steam-water heat exchanger 6 is connected with a workshop process cleaning hot water supply pipe 13, the water inlet end of the high-temperature side of the first steam-water heat exchanger 7 is connected with the water outlet of the condensate tank 9 through a condensate pipeline 14, a pressure water pump 15 is arranged on the condensate pipeline 14, the water outlet end of the high-temperature side of the first steam-water heat exchanger 7 is connected with a workshop circulating water replenishing pipe 16 after being connected with the high-temperature side of the second steam-water heat exchanger 8 in series, and the second water inlet and the third water inlet of the condensate tank 9 are also connected with a workshop condensate pipe 21.
As can be seen from fig. 1, a pressure reducing assembly 4 having a specific structure as shown in fig. 2 is disposed on each of the steam branch pipes 3, and includes a first stop valve 41, a purifier 42, a pressure reducing valve 43, a safety valve 44, and a second stop valve 45, which are sequentially disposed along the steam conveying direction.
A steam supplementing pipe 18 is arranged in parallel on at least one or each steam branch pipe 3 for supplying steam to the workshop, and the pressure reducing assembly 4 is also arranged on the steam supplementing pipe 18. Through the arrangement of the steam supplementing pipe 18, steam can be supplemented when the steam consumption of the steam consuming equipment is relatively large, and the steam supply amount is increased.
As can also be seen from fig. 1, the water outlet of the gas-distributing cylinder 2, the water outlet of each pressure reducing assembly 4, the water outlet of the first steam-water heat exchanger 5 and the water outlet of the second steam-water heat exchanger 6 are connected to the water inlet of the condensed water tank 9 through the water drainage assembly 17.
Specifically, referring to fig. 3, the drainage assembly 17 includes a water pipe 171 and a bypass pipe 172, the water pipe 171 is sequentially provided with a third stop valve 173, a steam trap 174, a fourth stop valve 175 and a check valve 176, the bypass pipe 172 is provided with a fifth stop valve 177, a water inlet end of the bypass pipe 172 is connected to a water inlet end of the water pipe 171, and a water outlet end of the bypass pipe 172 is connected to the water pipe 171 between the fourth stop valve 175 and the check valve 176.
In this embodiment, the condensate pipe 14 is connected in parallel with a backup pipe 19, the backup pipe 19 is provided with a backup water pump 20, and the backup pipe 19 and the backup water pump 20 form a backup mechanism with the pressure water pump 15, so that the condensate can be timely supplemented when the pressure water pump 15 needs to be overhauled or the pressure water pump 15 fails, and the continuous and stable operation of the system is ensured.
High-temperature and high-pressure saturated steam is pressurized by a municipal heating power company, enters a preparation workshop heating power station, is metered, is connected into a steam distribution cylinder 2 for distribution, and is decompressed into low-pressure saturated steam by each branch steam pipeline through a decompression assembly 4 and is respectively connected to steam consumption equipment in the process and heating ventilation professions. After the steam of each steam consuming device exchanges heat, the latent heat released by the saturated steam is changed into saturated high-temperature condensed water under the same pressure, and the saturated high-temperature condensed water is recycled to a stainless steel condensed water tank 9 of the heating power station through a condensed water recycling pipeline through a drainage component. Considering that a steam system of a preparation workshop is generally continuously used all year round and the temperature of steam condensate is generally about 100 ℃, a two-stage heat exchanger needs to be arranged to fully utilize the waste heat of the steam condensate, and meanwhile, the low-temperature side is matched with an air-conditioning hot water system and a process cleaning hot water system which are also continuously operated all year round. Because the temperature difference of the supply water and the return water of the air-conditioning hot water system is 60/50 ℃, the high-temperature condensed water is utilized to preheat the return water of the air-conditioning hot water in the primary water-water heat exchanger 7, the preheated air-conditioning hot water can reach the requirement of the supply water temperature of 60 ℃ only by the steam heat exchange of the first steam-water heat exchanger 5, and the temperature of the high-temperature condensed water is still not lower than 60 ℃; the high-temperature condensed water passing through the primary water-water heat exchanger 7 passes through the secondary water-water heat exchanger 8 to exchange heat with tap water or return water of process cleaning hot water from a workshop, the high-temperature condensed water after heat exchange is used as the process cleaning hot water for a preparation workshop, and when the heat exchange load cannot meet the requirement, the high-temperature condensed water can exchange heat through the second steam-water heat exchanger 6 to supplement the heat load. The temperature of the high-temperature condensed water after passing through the secondary water-water heat exchanger 8 can be reduced to 30-40 ℃, and at the moment, the condensed water is used as water supplement and is connected into the circulating water system, so that the water supplement amount of the circulating water system is saved.
The waste heat recovery system has the advantages that the steam-water heat exchangers and the two-stage water-water heat exchangers are connected in series, so that the heat source temperatures between the heat exchangers are different, hot water with different temperatures, such as air-conditioning hot water, process cleaning hot water and the like, is prepared, the waste heat is utilized in a gradient manner, and meanwhile, the cooled condensed water is used as circulating water for supplementing water, so that the energy is recovered to the maximum extent, the energy consumption is reduced, and the cost is saved for pharmaceutical enterprises.
The technical solution provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a pharmaceutical factory preparation workshop steam condensate waste heat recovery system which characterized in that: the system comprises a steam-distributing cylinder, a first steam-water heat exchanger, a second steam-water heat exchanger, a primary water-water heat exchanger, a secondary water-water heat exchanger and a condensed water tank, wherein an air inlet of the steam-distributing cylinder is connected with a steam main pipe, a first steam outlet and a second steam outlet of the steam-distributing cylinder respectively supply steam required by production to the same or different preparation workshops through steam branch pipes, a third steam outlet and a fourth steam outlet of the steam-distributing cylinder are respectively connected to steam inlets of the first steam-water heat exchanger and the second steam-water heat exchanger through steam branch pipes, condensed water outlets of the first steam-water heat exchanger and the second steam-water heat exchanger are connected to a first water inlet of the condensed water tank, a water inlet of the first steam-water heat exchanger is connected with a water supply pipe of hot water of an air conditioner of the workshop after being connected with a low-temperature side of the primary water heat exchanger through a pipeline, and a water outlet of the first steam-water heat exchanger is connected with hot water of the air conditioner of the workshop, the water inlet of the second steam-water heat exchanger is connected with a workshop process cleaning hot water return pipe after being connected with the low-temperature side of the second steam-water heat exchanger through a pipeline, the water outlet of the second steam-water heat exchanger is connected with a workshop process cleaning hot water supply pipe, the water inlet end of the high-temperature side of the first-stage water-water heat exchanger is connected with the water outlet of the condensate tank through a condensate pipeline, a pressure water pump is arranged on the condensate pipeline, and the water outlet end of the high-temperature side of the first-stage water-water heat exchanger is connected with the workshop circulating water replenishing pipe after being connected with the high-temperature side of the second-stage water-water heat exchanger in series.
2. The system of claim 1, wherein the system comprises: and each steam branch pipe is provided with a pressure reducing assembly.
3. The system of claim 2, wherein the system comprises: the pressure reducing assembly comprises a first stop valve, a purifier, a pressure reducing valve, a safety valve and a second stop valve which are sequentially arranged along the steam conveying direction.
4. The system of claim 2, wherein the system comprises: and the water outlet of the steam distributing cylinder, the water outlet of each pressure reducing assembly, the water outlet of the first steam-water heat exchanger and the water outlet of the second steam-water heat exchanger are connected to the water inlet of the condensation water tank through the drainage assembly.
5. The system for recovering the waste heat of the steam condensate water in the pharmaceutical factory preparation workshop as claimed in claim 4, wherein: the drain assembly comprises a water pipeline and a bypass pipeline, a third stop valve, a steam trap, a fourth stop valve and a check valve are sequentially arranged on the water pipeline, the bypass pipeline is provided with a fifth stop valve, the water inlet end of the bypass pipeline is connected with the water inlet end of the water pipeline, and the water outlet end of the bypass pipeline is connected to the water pipeline between the fourth stop valve and the check valve.
6. The system of claim 1, wherein the system comprises: the condensate pipeline is connected in parallel with a standby pipeline, and a standby water pump is arranged on the standby pipeline.
7. The pharmaceutical factory formulation plant steam condensate waste heat recovery system of any one of claims 1 to 6, wherein: and the second water inlet and the third water inlet of the condensed water tank are also connected with a condensed water pipe in a workshop.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121457178.0U CN215723154U (en) | 2021-06-29 | 2021-06-29 | Pharmaceutical factory preparation workshop steam condensate waste heat recovery system |
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| CN202121457178.0U CN215723154U (en) | 2021-06-29 | 2021-06-29 | Pharmaceutical factory preparation workshop steam condensate waste heat recovery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117329873A (en) * | 2023-09-27 | 2024-01-02 | 中国医学科学院医学生物学研究所 | Two-stage efficient heat recycling device for steam condensate water for vaccine production workshop |
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2021
- 2021-06-29 CN CN202121457178.0U patent/CN215723154U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117329873A (en) * | 2023-09-27 | 2024-01-02 | 中国医学科学院医学生物学研究所 | Two-stage efficient heat recycling device for steam condensate water for vaccine production workshop |
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