CN202915353U - Comprehensive cooling system for air-water combined slag cooler of CFB boiler - Google Patents
Comprehensive cooling system for air-water combined slag cooler of CFB boiler Download PDFInfo
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- CN202915353U CN202915353U CN 201220529428 CN201220529428U CN202915353U CN 202915353 U CN202915353 U CN 202915353U CN 201220529428 CN201220529428 CN 201220529428 CN 201220529428 U CN201220529428 U CN 201220529428U CN 202915353 U CN202915353 U CN 202915353U
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- slag cooler
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Abstract
本实用新型公开了一种CFB锅炉风水联合型冷渣器综合冷却系统，包括除盐水罐、除盐水泵、进水管路、冷渣器、回水母管；所述除盐水罐通过除盐水泵经进水管路连接到冷渣器的进水口，所述冷渣器的出水口通过回水母管连接到除盐水罐；此外，所述进水管路上除盐水泵的后面设置有除氧器系统给水泵。本实用新型将除氧乏汽和定排乏汽的回收并入冷渣器冷却系统，以充分利用冷渣器冷却系统已有的设备资源和管路设计，通过综合利用和优化设计，实现减少资金投入和节能降耗的双重目的。
This utility model discloses a combined air-water cooling system for a CFB boiler slag cooler, comprising a demineralized water tank, a demineralized water pump, an inlet water pipeline, a slag cooler, and a return water header. The demineralized water tank is connected to the inlet of the slag cooler via the demineralized water pump and the inlet water pipeline, and the outlet of the slag cooler is connected to the demineralized water tank via the return water header. Furthermore, a deaerator system feedwater pump is installed downstream of the demineralized water pump on the inlet water pipeline. This utility model integrates the recovery of deaerated exhaust steam and stator exhaust steam into the slag cooler cooling system, making full use of the existing equipment resources and piping design of the slag cooler cooling system. Through comprehensive utilization and optimized design, it achieves the dual goals of reducing capital investment and saving energy.
Description
Technical field
The utility model relates to the Thermal Energy and Power Engineering technical field, relates in particular to comprehensive utilization and design that the wind and water combined type slag cooler of CFB boiler cooling system is carried out.
Background technology
At present, the wind and water combined type slag cooler of CFB boiler often adopts demineralized water as cooling water; And boiler feed deaerator also needs to utilize demineralized water as feedwater, supplies to oxygen-eliminating device after the heating.In the slag cooler cooling system, cooling water is independently supplied with by the desalination water pot by the desalination water pump, and the cooling slag cooler is back in the desalination water pot by the female pipe of backwater.In the boiler feed deaerator system, demineralized water independently supplies in the moisturizing heater by its pipeline, feeds oxygen-eliminating device after heating.Although more than two systems need to utilize demineralized water, be two independently systems, the device resource, the pipeline that not only need are more, and are unfavorable for realizing energy-saving and cost-reducing.
In addition, it is that main, chemical deoxidization is auxiliary mode that existing water-tube boiler water all adopts thermal de-aeration, the deoxygenation exhaust steam is directly to the sky discharging, has greatly increased the loss of heat energy, the water yield, is unfavorable for realizing the raising of energy-saving and emission-reduction and economic benefit.In addition, it also is directly sky to be discharged that steam power plant arranges exhaust steam surely, and a large amount of hot air discharges not only waste energy, and air quality and temperature are caused very large impact in atmosphere.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, the wind and water combined type slag cooler of a kind of CFB boiler integrative cooling system is provided, by the slag cooler system is carried out comprehensive Design and utilization in conjunction with oxygen-eliminating device system etc., realize saving that device resource drops into, the purpose of energy-saving and emission-reduction.
The purpose of this utility model is achieved by the following technical programs:
The wind and water combined type slag cooler of a kind of CFB boiler integrative cooling system that the utility model provides comprises desalination water pot, desalination water pump, inlet pipeline, slag cooler, the female pipe of backwater; Described desalination water pot is connected to the water inlet of slag cooler by the desalination water pump through inlet pipeline, and the delivery port of described slag cooler is connected to the desalination water pot by the female pipe of backwater; In addition, the back of desalination water pump is provided with oxygen-eliminating device system feed pump on the described inlet pipeline.The utility model is designed into oxygen-eliminating device system feed pump in the slag cooler cooling system, and be positioned at the back of desalination water pump, not only take full advantage of the circuit design of slag cooler cooling system, saved piping material, reduced the input of equipment funds, and can take full advantage of the pressure of desalination water pump, realize the purpose of energy efficient.
Further, oxygen-eliminating device described in the utility model system feed pump is connected on the moisturizing heater of oxygen-eliminating device system, with the add water of demineralized water as oxygen-eliminating device, feeds oxygen-eliminating device after heating.
In the such scheme, slag cooler integrative cooling system described in the utility model also comprises drain tank and drainage pump, and the delivery port of described drain tank is connected by the female pipe of drainage pump and described backwater; The water inlet of described drain tank is connected with deoxygenation exhaust steam steam trap connection.The utility model reclaims the condensate water that forms with the deoxygenation exhaust steam and is recycled in the desalination water pot of slag cooler integrated system by drain tank and drainage pump, to increase recovery and the utilization of water.
Further, deoxygenation exhaust steam steam trap connection described in the utility model comprises moisturizing heater, deoxygenation exhaust steam recovery tube, deoxygenation exhaust steam drain pipe; One end of described deoxygenation exhaust steam recovery tube connects the oxygen-eliminating device blow-down pipe, and its other end is connected to the moisturizing heater; One end of described deoxygenation exhaust steam drain pipe is connected with the outlet of the condensate water of moisturizing heater, and its other end is connected with the water inlet of described drain tank.The utility model by deoxygenation exhaust steam recovery tube with oxygen-eliminating device to the Steam Recovery of sky discharging in the moisturizing heater, in order to heat the demineralized water in the moisturizing heater, effectively to utilize heat energy, further improve the temperature that demineralized water enters oxygen-eliminating device.Simultaneously, the condensate water that the deoxygenation exhaust steam forms after heat exchange in the moisturizing heater enters in the drain tank through deoxygenation exhaust steam drain pipe, and then is recovered in the desalination water pot through the female pipe of the backwater of slag cooler cooling system by drainage pump.
Further, be provided with blow-down pipe on the housing of moisturizing heater described in the utility model, dissolved oxygen is entered atmosphere through this pipe, to guarantee deaerating effect.Described moisturizing heater adopts the following current shell and tube, and shell side is walked in the deoxygenation exhaust steam, adds water (demineralized water) and walks tube side.
In addition, in the such scheme, the water inlet of drain tank described in the utility model also with decide row's exhaust steam steam trap connection and be connected, reclaim the condensate water that forms and be recycled in the desalination water pot of slag cooler integrated system to realize surely arranging exhaust steam, reduced the discharging of sewage.
Further, described in the utility model surely arrange the exhaust steam steam trap connection comprise decide row's exhaust steam heat exchanger, surely arrange the exhaust steam recovery tube, surely arrange the exhaust steam drain pipe; A described end of surely arranging the exhaust steam recovery tube with surely arrange the flash vessel blow-down pipe and be connected, its other end is connected to decides row's exhaust steam heat exchanger; A described end of surely arranging the exhaust steam drain pipe is connected with the condensate water outlet of surely arranging the exhaust steam heat exchanger, and its other end is connected with the water inlet of described drain tank.The utility model by surely arrange the exhaust steam recovery tube will surely arrange flash vessel to the Steam Recovery of sky discharging to deciding in row's exhaust steam heat exchanger, surely arrange the condensate water that exhaust steam forms after heat exchange, enter in the drain tank through surely arranging the exhaust steam drain pipe, and then be recovered in the desalination water pot through the female pipe of the backwater of slag cooler cooling system by drainage pump.
For taking full advantage of existing equipment and pipeline, the utility model with the described exhaust steam design of heat exchanger of surely arranging in the slag cooler cooling system, after oxygen-eliminating device system feed pump, in parallel with slag cooler and be arranged on inlet pipeline and reclaim between female pipe, with demineralized water as cooling water, and the input of having saved equipment tubing.
The utlity model has following beneficial effect:
(1) the utility model is incorporated deoxygenation exhaust steam and the recovery of surely arranging exhaust steam into the slag cooler cooling system, to take full advantage of the existing device resource of slag cooler cooling system and circuit design, by comprehensive utilization and optimal design, realize reducing fund input and energy-saving and cost-reducing dual purpose.
(2) feed pump of oxygen-eliminating device system is arranged on the back of slag cooler cooling system desalination water pump, takes full advantage of the pipeline of existing slag cooler cooling system and the pressure of desalination water pump, the input of effectively having saved energy consumption and pipeline.
(3) with the feedwater of demineralized water as the moisturizing heater, and utilize the deoxygenation exhaust steam of reclaiming to heat demineralized water, not only avoided the deoxygenation exhaust steam directly sky to be discharged, greatly reduce the loss of heat energy, the water yield, and take full advantage of the heat energy of deoxygenation exhaust steam, can make the outlet water temperature of moisturizing heater improve about 25 ℃, enter the raising of oxygen-eliminating device demineralized water (adding water) temperature, help to reduce the steam consumption of oxygen-eliminating device; The condensate water that simultaneously deoxygenation exhaust steam forms after heat exchange is recycled in the desalination water pot of slag cooler cooling system, has increased recovery and the utilization of water.
(4) for deciding row's flash vessel system, increasing by one surely arranges the exhaust steam heat exchanger and reclaims and surely to arrange exhaust steam, adopt the demineralized water of slag cooler cooling system as cooling water, and will surely arrange the exhaust steam heat exchanger and be arranged in the slag cooler cooling system, reduced the input of cooling water pump, take full advantage of the recovery of existing equipment and pipeline and surely arrange the exhaust steam heat, not only avoided sky is discharged, reduced environmental pollution, and the condensate water that forms after the heat exchange is recycled in the desalination water pot of slag cooler cooling system, reduce the discharging of sewage, increased recovery and the utilization of water.。
Description of drawings
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail:
Fig. 1 is the structural principle schematic diagram of the slag cooler cooling system among the utility model embodiment;
Fig. 2 is the structural principle schematic diagram of deoxygenation exhaust steam steam trap connection among the utility model embodiment;
Fig. 3 is the structural principle schematic diagram of surely arranging the exhaust steam steam trap connection among the utility model embodiment.
Among the figure: desalination water pot 1, desalination water pump 2, inlet pipeline 3, slag cooler 4, the female pipe 5 of backwater, oxygen-eliminating device system feed pump 6, drain tank 7, drainage pump 8, moisturizing heater 9, deoxygenation exhaust steam recovery tube 10, deoxygenation exhaust steam drain pipe 11, oxygen-eliminating device blow-down pipe 12, blow-down pipe 13 is arranged exhaust steam heat exchanger 14 surely, surely arranges exhaust steam recovery tube 15, surely arrange exhaust steam drain pipe 16, surely arrange flash vessel blow-down pipe 17, pipeline 18,19
The specific embodiment
Fig. 1～Figure 3 shows that the embodiment of the wind and water combined type slag cooler of a kind of CFB boiler of the utility model integrative cooling system is by slag cooler cooling system (see figure 1), deoxygenation exhaust steam steam trap connection (see figure 2) with surely arrange exhaust steam steam trap connection (see figure 3) and consist of.
As shown in Figure 1, the slag cooler cooling system comprises desalination water pot 1, desalination water pump 2, inlet pipeline 3, slag cooler 4, the female pipe 5 of backwater, oxygen-eliminating device system feed pump 6, drain tank 7 and drainage pump 8.Desalination water pot 1 is connected to the water inlet of slag cooler 4 by desalination water pump 2 through inlet pipeline 3, and the delivery port of slag cooler 4 is connected to desalination water pot 1 by the female pipe 5 of backwater.
Oxygen-eliminating device system feed pump 6 is arranged on the back of desalination water pump 2 on the inlet pipeline 3, this oxygen-eliminating device system feed pump adopts the phase transformation pump, and be connected to (see figure 2) on the moisturizing heater 9 of oxygen-eliminating device system, by utilizing the pressure of the existing pipeline of slag cooler cooling system and desalination water pump 2, demineralized water is offered moisturizing heater 9.The delivery port of drain tank 7 is managed 5 and is connected by drainage pump 8 and backwater are female, the water inlet of drain tank 7 and deoxygenation exhaust steam steam trap connection be connected to arrange the exhaust steam steam trap connection and be connected.
As shown in Figure 2, deoxygenation exhaust steam steam trap connection comprises moisturizing heater 9, deoxygenation exhaust steam recovery tube 10, deoxygenation exhaust steam drain pipe 11.One end of deoxygenation exhaust steam recovery tube 10 connects oxygen-eliminating device blow-down pipe 12, and its other end is connected on the moisturizing heater 9, thereby the deoxygenation exhaust steam is recycled in the moisturizing heater 9.Be provided with blow-down pipe 13 on the housing of moisturizing heater 9, dissolved oxygen entered atmosphere through this pipe, thereby guaranteed deaerating effect preferably.Demineralized water feeds moisturizing heater 9 as adding the water (see figure 1) by oxygen-eliminating device system feed pump 6, moisturizing heater 9 adopts the following current shell and tube, shell side is walked in the deoxygenation exhaust steam, add water (demineralized water) and walk tube side, utilize the deoxygenation exhaust steam heating demineralized water of deoxygenation heating steam and recovery, enter the temperature of oxygen-eliminating device demineralized water (adding water) with further raising, reduce the steam consumption of oxygen-eliminating device.As shown in Figure 2, one end of deoxygenation exhaust steam drain pipe 11 is connected with the outlet of the condensate water of moisturizing heater 9, its other end is connected with the water inlet of drain tank 7, so that the condensate water that deoxygenation exhaust steam in the moisturizing heater 9 is formed is recycled to drain tank 7, and then be recovered to (see figure 1) in the desalination water pot 1 by drainage pump 8 through the female pipe 5 of the backwater of slag cooler cooling system after heat exchange.
As shown in Figure 3, surely arrange the exhaust steam steam trap connection comprise decide row's exhaust steam heat exchanger 14, surely arrange exhaust steam recovery tube 15, surely arrange exhaust steam drain pipe 16.Surely an end of arranging exhaust steam recovery tube 15 with surely arrange flash vessel blow-down pipe 17 and be connected, its other end is connected to be decided on row's exhaust steam heat exchanger 14, is recycled to and decides in row's exhaust steam heat exchanger 14 thereby will surely arrange exhaust steam.Surely arrange 14 designs of exhaust steam heat exchanger in the slag cooler cooling system, be positioned at the back of oxygen-eliminating device system feed pump 6, by pipeline 18,19 and slag cooler 4 be arranged in parallel at inlet pipeline 3 and reclaim (see figure 1) between female pipe 5, adopt the demineralized water of slag cooler cooling system as cooling water, reclaim and surely arrange the exhaust steam heat.As shown in Figure 3, surely an end of arranging exhaust steam drain pipe 16 is connected with the condensate water outlet of surely arranging exhaust steam heat exchanger 14, its other end is connected with the water inlet of drain tank 7, in order to will surely arrange and surely arrange the condensate water that forms after the exhaust steam heat exchange in the exhaust steam heat exchanger 14 and be recycled to drain tank 7, and then be recovered to (see figure 1) in the desalination water pot 1 by drainage pump 8 through the female pipe 5 of the backwater of slag cooler cooling system.
Claims (9)
1. the wind and water combined type slag cooler of a CFB boiler integrative cooling system comprises desalination water pot (1), desalination water pump (2), inlet pipeline (3), slag cooler (4), the female pipe of backwater (5); Described desalination water pot (1) is connected to the water inlet of slag cooler (4) by desalination water pump (2) through inlet pipeline (3), and the delivery port of described slag cooler (4) is connected to desalination water pot (1) by the female pipe of backwater (5); It is characterized in that: the back of the upper desalination water pump (2) of described inlet pipeline (3) is provided with oxygen-eliminating device system feed pump (6).
2. the wind and water combined type slag cooler of CFB boiler according to claim 1 integrative cooling system, it is characterized in that: described oxygen-eliminating device system's feed pump (6) is connected on the moisturizing heater (9) of oxygen-eliminating device system.
3. the wind and water combined type slag cooler of CFB boiler according to claim 1 and 2 integrative cooling system, it is characterized in that: also comprise drain tank (7) and drainage pump (8), the delivery port of described drain tank (7) is connected with the female pipe of described backwater (5) by drainage pump (8); The water inlet of described drain tank (7) is connected with deoxygenation exhaust steam steam trap connection.
4. the wind and water combined type slag cooler of CFB boiler according to claim 3 integrative cooling system, it is characterized in that: described deoxygenation exhaust steam steam trap connection comprises moisturizing heater (9), deoxygenation exhaust steam recovery tube (10), deoxygenation exhaust steam drain pipe (11); One end of described deoxygenation exhaust steam recovery tube (10) connects oxygen-eliminating device blow-down pipe (12), and its other end is connected to moisturizing heater (9); One end of described deoxygenation exhaust steam drain pipe (11) is connected with the condensate water outlet of moisturizing heater (9), and its other end is connected with the water inlet of described drain tank (7).
5. the wind and water combined type slag cooler of CFB boiler according to claim 4 integrative cooling system is characterized in that: be provided with blow-down pipe (13) on the housing of described moisturizing heater (9).
6. it is characterized in that according to claim 2 or the wind and water combined type slag cooler of 4 or 5 described CFB boilers integrative cooling system: described moisturizing heater (9) adopts the following current shell and tube.
7. the wind and water combined type slag cooler of CFB boiler according to claim 3 integrative cooling system is characterized in that: the water inlet of described drain tank (7) also with decide row's exhaust steam steam trap connection and be connected.
8. the wind and water combined type slag cooler of CFB boiler according to claim 7 integrative cooling system is characterized in that: described surely arrange the exhaust steam steam trap connection comprise decide row's exhaust steam heat exchanger (14), surely arrange exhaust steam recovery tube (15), surely arrange exhaust steam drain pipe (16); A described end of surely arranging exhaust steam recovery tube (15) with surely arrange flash vessel blow-down pipe (17) and be connected, its other end is connected to decides row's exhaust steam heat exchanger (14); A described end of surely arranging exhaust steam drain pipe (16) is connected with the condensate water outlet of surely arranging exhaust steam heat exchanger (14), and its other end is connected with the water inlet of described drain tank (7).
9. the wind and water combined type slag cooler of CFB boiler according to claim 8 integrative cooling system, it is characterized in that: the described exhaust steam heat exchanger (14) of surely arranging is designed in the slag cooler cooling system, be positioned at oxygen-eliminating device system feed pump (6) afterwards, in parallel with slag cooler (4) and be arranged on inlet pipeline (3) and reclaim between female pipe (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220529428 CN202915353U (en) | 2012-10-16 | 2012-10-16 | Comprehensive cooling system for air-water combined slag cooler of CFB boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220529428 CN202915353U (en) | 2012-10-16 | 2012-10-16 | Comprehensive cooling system for air-water combined slag cooler of CFB boiler |
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| CN202915353U true CN202915353U (en) | 2013-05-01 |
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| CN 201220529428 Expired - Lifetime CN202915353U (en) | 2012-10-16 | 2012-10-16 | Comprehensive cooling system for air-water combined slag cooler of CFB boiler |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542406A (en) * | 2013-10-22 | 2014-01-29 | 中国石油化工集团公司 | Boiler slag cooler enhanced cooling and waste-heat utilization system and method for thermal power plant |
| CN110296388A (en) * | 2019-07-18 | 2019-10-01 | 中国华能集团清洁能源技术研究院有限公司 | Utilize the afterheat utilizing system and method for boiler blowdown water heating slag cooler cooling water return water |
| 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 |
| CN115537236A (en) * | 2022-10-08 | 2022-12-30 | 陕西精益化工有限公司 | Make-up water heater installs bypass system additional |
| CN115560346A (en) * | 2022-10-08 | 2023-01-03 | 上海环保工程成套有限公司 | Waste heat recycling device for slag cooler of biomass boiler heat supply unit |
-
2012
- 2012-10-16 CN CN 201220529428 patent/CN202915353U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542406A (en) * | 2013-10-22 | 2014-01-29 | 中国石油化工集团公司 | Boiler slag cooler enhanced cooling and waste-heat utilization system and method for thermal power plant |
| CN103542406B (en) * | 2013-10-22 | 2016-02-03 | 中国石油化工集团公司 | Thermal power plant boiler slag cooler strengthening cooling and bootstrap system and method |
| CN110296388A (en) * | 2019-07-18 | 2019-10-01 | 中国华能集团清洁能源技术研究院有限公司 | Utilize the afterheat utilizing system and method for boiler blowdown water heating slag cooler cooling water return water |
| 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 |
| CN115537236A (en) * | 2022-10-08 | 2022-12-30 | 陕西精益化工有限公司 | Make-up water heater installs bypass system additional |
| CN115560346A (en) * | 2022-10-08 | 2023-01-03 | 上海环保工程成套有限公司 | Waste heat recycling device for slag cooler of biomass boiler heat supply unit |
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