CN111664440A - Boiler blow-down waste heat recycling device and method - Google Patents

Boiler blow-down waste heat recycling device and method Download PDF

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Publication number
CN111664440A
CN111664440A CN202010670076.0A CN202010670076A CN111664440A CN 111664440 A CN111664440 A CN 111664440A CN 202010670076 A CN202010670076 A CN 202010670076A CN 111664440 A CN111664440 A CN 111664440A
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Prior art keywords
water
water tank
exhaust steam
pipeline
communicated
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CN202010670076.0A
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Chinese (zh)
Inventor
张筠
张�林
张慎之
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Lianyungang Wanda Power Station Auxiliary Equipment Factory
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Lianyungang Wanda Power Station Auxiliary Equipment Factory
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Priority to CN202010670076.0A priority Critical patent/CN111664440A/en
Publication of CN111664440A publication Critical patent/CN111664440A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00Component parts or details of steam boilers
    • F22B37/02Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/48Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
    • F22B37/54De-sludging or blow-down devices
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/06Flash evaporation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28CHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00Other direct-contact heat-exchange apparatus
    • F28C3/06Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour
    • F28C3/08Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour with change of state, e.g. absorption, evaporation, condensation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

A boiler blow-off waste heat recovery and reuse device comprises a flash separator, a sewage cooling device, an exhaust steam recovery device and a water tank, wherein the inlet end of the flash separator is communicated with an external boiler blow-off pipeline; the water tank is communicated with a steam outlet pipeline, a drainage pipeline and a circulating pipeline. The device reasonable in design, heat exchange efficiency are high, can carry out the heat exchange with the sewage that the outside boiler discharged with let in the raw water to continuously outwards supply hot water, realized filtering blowdown waste heat recovery and recycle, neither influence the normal blowdown of boiler, the energy saving again.

Description

Boiler blow-down waste heat recycling device and method
Technical Field
The invention relates to the technical field of energy recovery, in particular to a boiler blow-down waste heat recovery and reutilization device and a waste heat recovery and reutilization method of the boiler blow-down waste heat recovery and reutilization device.
Background
The boiler is an energy conversion device, the energy input to the boiler comprises chemical energy and electric energy in fuel, the boiler outputs steam, high-temperature water or an organic heat carrier with certain heat energy, the boiler generating the steam is called as a steam boiler, often called as the boiler for short, and is mainly used for thermal power stations, ships, locomotives and industrial and mining enterprises. The method is mainly used for thermal power stations, ships, locomotives and industrial and mining enterprises.
In the using process of the boiler, sewage needs to be discharged outwards, and more heat energy exists in the sewage, and the most common method in the prior art is to send the part of sewage into a cooling tank, treat and discharge the sewage after cooling, so that the waste of the heat energy is caused; at present, although some methods use the part of the sewage to carry out heat exchange and recover heat energy, the utilization efficiency of the heat energy is very low, and the recovered energy is still used for a boiler and cannot be output to the outside for external use.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a boiler blow-off waste heat recycling device which is reasonable in design, high in heat efficiency, and capable of recycling boiler blow-off waste heat and continuously supplying hot water outwards.
The invention also provides a waste heat recycling method of the boiler blow-down waste heat recycling device.
The technical problem to be solved by the present invention is achieved by the following technical means. The invention relates to a boiler blow-off waste heat recovery and reuse device, which comprises a flash separator, a sewage cooling device, an exhaust steam recovery device and a water tank for storing hot water, wherein the inlet end of the flash separator is communicated with an external boiler blow-off pipeline; the water tank is communicated with a steam outlet pipeline, a drainage pipeline and a circulating pipeline, the steam outlet pipeline is communicated with a steam inlet end of the exhaust steam recovery device, the circulating pipeline is communicated with a water inlet end of the exhaust steam recovery device, and the circulating pipeline is provided with a heating circulating pump; a hot water output pump is also arranged on the drainage pipeline, and a water return pipeline communicated with the water tank is also communicated on the drainage pipeline.
The technical problem to be solved by the invention can be further realized by the following technical scheme that for the boiler blowdown waste heat recycling device, the exhaust steam recycling device comprises a shell, an exhaust steam recycling cavity is arranged in the shell, a water spray pipe communicated with a water inlet end of the steam recycling device is arranged in the exhaust steam recycling cavity, a plurality of nozzles are arranged on the water spray pipe, and a steam inlet end and a water outlet end of the exhaust steam recycling device are both arranged at the bottom of the exhaust steam recycling cavity.
The technical problem to be solved by the invention can be further realized by the following technical scheme that for the boiler blow-down waste heat recycling device, the dead steam recycling device is fixedly arranged at the top of the water tank.
The technical problem to be solved by the invention can be further realized by the following technical scheme that for the boiler blowdown waste heat recycling device, the upper part of the water tank is communicated with an overflow pipeline communicated with an external cooling pool, the bottom of the water tank is communicated with a purging pipeline for maintenance, and a purging control valve is mounted on the purging pipeline.
The technical problem to be solved by the invention can be further realized by the following technical scheme that for the boiler blowdown waste heat recovery and reuse device, the sewage cooling device comprises a shell and a heat exchanger arranged in the shell, and the heat exchanger is provided with a hot inlet end, a hot outlet end, a cold inlet end and a cold outlet end.
The technical problem to be solved by the invention can be further realized by the following technical scheme that the boiler blow-down waste heat recycling device comprises a control device for controlling water outlet of a water tank, a liquid level meter for measuring the water level of the water tank is arranged on the water tank, a pressure meter is arranged on the exhaust steam recycling device, the liquid level meter and the pressure meter are connected with the input end of the control device, and a heating circulating pump and a hot water output pump are connected with the output end of the control device.
The technical problem to be solved by the invention can be further realized by the following technical scheme that for the boiler blowdown waste heat recycling device, the control device comprises a PLC and a control cabinet convenient for the PLC to be installed and fixed.
The technical problem to be solved by the invention can be further realized by the following technical scheme, and for the boiler blow-down waste heat recycling device, a boiler blow-down waste heat recycling method comprises the following steps:
(1) introducing sewage discharged by an external boiler into a flash separator for flash separation, sending exhaust steam generated by separation into a water tank for heat recovery, then sending the exhaust steam into an exhaust steam recovery device from the water tank, and sending other steam liquid and wastewater into a sewage cooling device for heat recovery;
(2) the vapor and the liquid and the wastewater entering the sewage cooling device exchange heat with raw water fed by an external water supply pipeline and then are sent to an external cooling pool for cooling, and the raw water is sent to the exhaust steam recovery device after being heated by heat exchange;
(3) raw water entering the exhaust steam recovery device is mixed with exhaust steam for heat exchange and then is sent into the water tank;
(4) hot water in the water tank is sent into the exhaust steam recovery device through a circulating pipeline to be subjected to heat exchange and then returns to the water tank to be subjected to circulating heating, and meanwhile, the hot water output pump outputs hot water outwards according to the water level in the water tank.
The technical problem to be solved by the invention can be further realized by the following technical scheme, and for the above boiler blow-down waste heat recycling method, the method for outputting hot water in the water tank comprises the following steps: firstly, presetting a water outlet level, and outputting hot water outwards after the water level of a water tank is higher than the preset water outlet level by a certain height; and stopping outputting the hot water after the water level of the water tank is lower than the preset outlet water level by a certain height.
The technical problem to be solved by the invention can be further realized by the following technical scheme, and for the above boiler blow-down waste heat recycling method, the water tank hot water circulation heating method comprises the following steps: firstly, presetting a circulating pressure level, and performing circulating heating after the pressure of the dead steam recovery device is greater than the circulating pressure level; and stopping the cyclic heating after the pressure of the dead steam recovery device is 0.
Compared with the prior art, the invention carries out flash separation on the sewage discharged by the boiler through the flash separator, the separated exhaust steam is sent into the water tank for heat recovery and then sent into the exhaust steam recovery device, other steam liquid and the waste water are sent into the sewage cooling device for heat recovery, and the waste water after heat recovery is sent into the external cooling tank for cooling treatment; the vapor and liquid and the waste water entering the sewage cooling device exchange heat with the introduced raw water, the raw water after heat exchange is sent to the exhaust steam recovery device, and the exhaust steam and the raw water are sent to the water tank after heat exchange in the exhaust steam recovery device, so that the hot water is conveniently output outwards; secondly, the water in the water tank can also be sent into a dead steam recovery device for cyclic heating, so that the heat exchange efficiency is further improved. The device reasonable in design, heat exchange efficiency are high, can carry out the heat exchange with the sewage that the outside boiler discharged with let in the raw water to continuously outwards supply hot water, realized filtering blowdown waste heat recovery and recycle, neither influence the normal blowdown of boiler, the energy saving again.
Drawings
FIG. 1 is a schematic diagram of a structure of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a boiler blowdown waste heat recovery and reuse device, the device includes a flash separator 1, a sewage cooling device 2, an exhaust steam recovery device 3 and a water tank 4 for storing hot water, the inlet end of the flash separator 1 is communicated with an external boiler blowdown pipeline 5, the steam outlet end of the flash separator 1 is communicated with the water tank 4, the water outlet end of the flash separator 1 is communicated with the hot inlet end of the sewage cooling device 2, the hot outlet end of the sewage cooling device 2 is communicated with an external cooling tank 6, the cold inlet end of the sewage cooling device 2 is communicated with an external water supply pipeline 7, the cold inlet end of the sewage cooling device 2 is communicated with the water inlet end of the exhaust steam recovery device 3, and the water outlet end of the exhaust steam recovery device 3 is communicated with the water tank 4; the flash separator 1 is used for carrying out flash separation on the sewage discharged by the boiler, the separated dead steam is sent into the water tank 4, and the remaining steam liquid and the waste water are sent into the sewage cooling device 2; the sewage cooling device 2 is used for carrying out heat exchange between the fed vapor and liquid and raw water fed by an external water supply pipeline 7, the raw water is fed into the exhaust steam recovery device 3 after absorbing heat, and the vapor and liquid and the waste water are fed into an external cooling tank 6 for cooling after releasing heat;
the flash separator 1 comprises a flash tank, the flash tank comprises a tank body, the tank body is provided with an inlet, a steam outlet and a water outlet, a separating device is arranged in the tank body, the steam outlet is communicated with a steam outlet pipe, the steam outlet pipe is communicated with the inside of the tank body through the separating device, the separating device comprises an air inlet, a separating area and a flow guide pipe, the air inlet is arranged on the side wall of the separating area, the separating area is communicated with the inside of the tank body through the air inlet, the flow guide pipe is connected below the separating area, and the separating area is communicated with the inside; the inlet is arranged in the middle of the tank body, and the water outlet is arranged at the bottom of the tank body; the flash tank can also be other flash tanks capable of realizing vapor-liquid separation in the prior art.
A steam outlet pipeline, a drainage pipeline 11 and a circulating pipeline 9 are communicated with the water tank 4, the steam outlet pipeline is communicated with a steam inlet end of the exhaust steam recovery device 3, the circulating pipeline 9 is communicated with a water inlet end of the exhaust steam recovery device 3, and a heating circulating pump 10 is arranged on the circulating pipeline 9; a hot water output pump 12 is also arranged on the drainage pipeline 11, a return water pipeline 13 communicated with the water tank 4 is also communicated on the drainage pipeline 11, a return water control valve is arranged on the recovery pipeline, and a drainage water control valve is arranged on a drainage pipe at the communication position of the recovery pipeline and the drainage pipeline 11. The steam outlet pipeline is used for sending the water vapor in the water tank 4 into the exhaust steam recovery device 3; the drainage pipeline 11 is arranged for conveying the hot water in the water tank 4 outwards; the circulating pipeline 9 is used for sending hot water in the water tank 4 into the exhaust steam recovery device 3 for further heat exchange, so that the temperature is further increased, and the problem that the subsequent output use is influenced due to the fact that the temperature is reduced because the hot water stays in the water tank 4 for too long time is avoided; the recycling pipe is arranged to realize self-circulation of water in the water tank 4 and maintain the fluidity of the water, and the specific process is that the water return control valve is opened, the water discharge control valve is closed, the hot water output pump 12 is used as a circulating pump, and the water in the water tank 4 firstly enters the water discharge pipe 11 and then flows back to the water tank 4 through the water return pipe 13.
In the dead steam recovery device 3, the introduced raw water and dead steam are fully mixed and subjected to heat exchange, and then the mixture is sent into the water tank 4 for storage, so that hot water is conveniently output outwards; meanwhile, hot water in the water tank 4 is also sent into the exhaust steam recovery device 3 for heat exchange, and then is returned to the water tank 4 to form cyclic heating;
this application can make full use of boiler blowdown's waste heat, realizes boiler sewage heat energy's recovery to heat the raw water with the heat energy of retrieving, obtain hot water, hot water storage can carry out the circulation heating in water tank 4, guarantees the temperature, thereby reaches and lasts outside hot water supply's purpose.
The exhaust steam recovery device 3 comprises a shell, an exhaust steam recovery cavity is arranged in the shell, a spray pipe communicated with a water inlet end of the steam recovery device is arranged in the exhaust steam recovery cavity, a plurality of nozzles are arranged on the spray pipe, and a steam inlet end and a water outlet end of the exhaust steam recovery device 3 are both arranged at the bottom of the exhaust steam recovery cavity. The raw water input from the water inlet end enters the water spraying pipe and is sprayed into the exhaust steam recovery cavity through the nozzle, so that the raw water is fully subjected to heat exchange with the exhaust steam input from the steam inlet end, the heat exchange efficiency is improved, and the raw water subjected to heat exchange flows into the water tank 4 through the water outlet end.
The dead steam recovery device 3 is fixedly arranged at the top of the water tank 4, and the direct distance between the water tank 4 and the dead steam recovery device 3 is shortened as much as possible, so that the heat loss is reduced as much as possible, and the utilization rate of resources is improved.
The upper portion of water tank 4 communicates with the overflow pipeline that communicates with outside cooling pond 6, and the bottom of water tank 4 communicates with the drain pipeline that is used for the maintenance, installs on the drain pipeline and puts clean control valve. The overflow pipeline is used for overflowing water in the water tank 4 outwards when the water level in the water tank 4 is too high, so that the water tank 4 is prevented from being damaged; the emptying pipeline is used for emptying the water in the water tank 4 when needed, so that the maintenance or the repair is convenient.
The sewage cooling device 2 comprises a shell and a heat exchanger arranged in the shell, wherein a hot inlet end, a hot outlet end, a cold inlet end and a cold outlet end are arranged on the heat exchanger. The cold source chamber is provided with a cold inlet end and a cold outlet end, and a heat source such as vapor, liquid and waste water obtained through separation in the application enters the heat source chamber from the hot inlet end and flows out of the heat source chamber from the hot outlet end; the cold source, like the raw water of external water supply pipeline 7 supply in this application, gets into the cold source cavity from cold entrance point, flows out the cold source cavity from cold exit end, and hot entrance point sets up with cold exit end in same one side, and hot exit end sets up with cold entrance point in same one side for the heat source is opposite with the flow direction of cold source in the heat exchanger, thereby increases heat exchange efficiency as far as possible.
The device is including being used for carrying out the controlling means 8 that controls to 4 water of water tank, installs on the water tank 4 and is used for carrying out the level gauge that measures to 4 water levels of water tank, installs the pressure gauge on the exhaust steam recovery unit 3, and level gauge, pressure gauge are connected with controlling means 8's input, and heating circulating pump 10 and hot water output pump 12 are connected with controlling means 8's output. The pressure gauge is linked with the heating circulating pump 10, namely the control device 8 controls the heating circulating pump 10 to be switched on and off according to a pressure signal detected by the pressure gauge; the liquid level meter is linked with the hot water output pump 12, namely the control device 8 controls the switch of the hot water output pump 12 according to a liquid level signal detected by the liquid level meter, so that the automatic operation of the heating circulating pump 10 and the hot water output pump 12 is realized.
The control device 8 comprises a PLC controller and a control cabinet convenient for the PLC controller to be installed and fixed, the PLC controller refers to a programmable logic controller, is a digital electronic device with a microprocessor, is used for a digital logic controller of automatic control, can load control instructions into a memory at any time for storage and execution, and is modularly combined by an internal CPU, an instruction and data memory, an input and output unit, a power supply module, a digital simulation unit and the like; adopt the PLC controller to receive the pressure gauge in this application, the detected signal of level gauge to according to detected signal control heating circulating pump 10 and the action of hot water output pump 12, relevant procedure adopt among the prior art the procedure can.
A method for recycling waste heat of boiler blow-off comprises the following steps:
(1) introducing sewage discharged by an external boiler into a flash separator 1 for flash separation, sending exhaust steam generated by separation into a water tank 4 for heat recovery, then sending the exhaust steam into an exhaust steam recovery device 3 from the water tank 4, and sending other steam liquid and wastewater into a sewage cooling device 2 for heat recovery;
(2) the vapor and the waste water entering the sewage cooling device 2 exchange heat with raw water fed by an external water supply pipeline 7 and then are sent to an external cooling pool 6 for cooling, and the raw water is sent to the exhaust steam recovery device 3 after heat exchange and temperature rise;
(3) the raw water entering the exhaust steam recovery device 3 is subjected to mixing heat exchange with the exhaust steam and then is sent to the water tank 4;
(4) hot water in the water tank 4 is sent into the exhaust steam recovery device 3 through the circulating pipeline 9 for heat exchange and then returns to the water tank 4 for circulating heating, and meanwhile, the hot water output pump 12 outputs hot water outwards according to the water level in the water tank 4.
The method for outputting the hot water of the water tank 4 comprises the following steps: firstly, presetting a water outlet level, and outputting hot water outwards after the water level of the water tank 4 is higher than the preset water outlet level by a certain height; and stopping outputting the hot water after the water level of the water tank 4 is lower than the preset outlet water level by a certain height. The preset water outlet level can be set according to the actual situation, is generally set as the height of the center line of the water tank 4, and when the water level is 300mm higher than the center line, the hot water output pump 12 acts to output hot water outwards; when the water level is 200mm below the center line, the hot water output pump 12 stops operating.
The hot water circulation heating method of the water tank 4 comprises the following steps: firstly, presetting a circulating pressure level, and performing circulating heating after the pressure of the dead steam recovery device 3 is greater than the circulating pressure level; after the pressure of the exhaust steam recovery device 3 is 0, the circulation heating is stopped. The preset circulating pressure level is set according to actual conditions, and is generally set to be 5 Kpa.

Claims (10)

1. The utility model provides a boiler blowdown waste heat recovery recycles device which characterized in that: the device comprises a flash separator, a sewage cooling device, an exhaust steam recovery device and a water tank for storing hot water, wherein the inlet end of the flash separator is communicated with an external boiler sewage pipeline, the steam outlet end of the flash separator is communicated with the water tank, the water outlet end of the flash separator is communicated with the hot inlet end of the sewage cooling device, the hot outlet end of the sewage cooling device is communicated with an external cooling pond, the cold inlet end of the sewage cooling device is communicated with an external water supply pipeline, the cold inlet end of the sewage cooling device is communicated with the water inlet end of the exhaust steam recovery device, and the water outlet end of the exhaust steam recovery device is communicated with the water tank;
the water tank is communicated with a steam outlet pipeline, a drainage pipeline and a circulating pipeline, the steam outlet pipeline is communicated with a steam inlet end of the exhaust steam recovery device, the circulating pipeline is communicated with a water inlet end of the exhaust steam recovery device, and the circulating pipeline is provided with a heating circulating pump; a hot water output pump is also arranged on the drainage pipeline, and a water return pipeline communicated with the water tank is also communicated on the drainage pipeline.
2. The boiler blow-down waste heat recovery and reuse apparatus according to claim 1, characterized in that: the exhaust steam recovery device comprises a shell, an exhaust steam recovery cavity is arranged in the shell, a spray pipe communicated with a water inlet end of the steam recovery device is arranged in the exhaust steam recovery cavity, a plurality of nozzles are arranged on the spray pipe, and the steam inlet end and the water outlet end of the exhaust steam recovery device are both arranged at the bottom of the exhaust steam recovery cavity.
3. The boiler blow-down waste heat recovery and reuse apparatus according to claim 1 or 2, characterized in that: the dead steam recovery device is fixedly arranged at the top of the water tank.
4. The boiler blow-down waste heat recovery and reuse apparatus according to claim 1, characterized in that: the upper portion of water tank intercommunication has the overflow pipe who communicates with outside cooling pond, and the bottom intercommunication of water tank has the drain pipeline that is used for the maintenance, installs on the drain pipeline and puts clean control valve.
5. The boiler blow-down waste heat recovery and reuse apparatus according to claim 1, characterized in that: the sewage cooling device comprises a shell and a heat exchanger arranged in the shell, wherein a hot inlet end, a hot outlet end, a cold inlet end and a cold outlet end are arranged on the heat exchanger.
6. The boiler blow-down waste heat recovery and reuse apparatus according to claim 1, characterized in that: the device is including being used for going out the controlling means who controls to the water tank, installs on the water tank and is used for carrying out the level gauge that measures to the water tank water level, installs the pressure gauge on the exhaust steam recovery unit, and level gauge, pressure gauge are connected with controlling means's input, and heating circulating pump and hot water output pump are connected with controlling means's output.
7. The boiler blow-down waste heat recovery and reuse apparatus according to claim 6, characterized in that: the control device comprises a PLC controller and a control cabinet convenient for the PLC controller to be installed and fixed.
8. A method for recycling and reusing boiler blow-down waste heat is characterized in that: the method uses the boiler blow-down waste heat recovery and reuse device of any one of claims 1 to 7, and comprises the following steps:
(1) introducing sewage discharged by an external boiler into a flash separator for flash separation, sending exhaust steam generated by separation into a water tank for heat recovery, then sending the exhaust steam into an exhaust steam recovery device from the water tank, and sending other steam liquid and wastewater into a sewage cooling device for heat recovery;
(2) the vapor and the liquid and the wastewater entering the sewage cooling device exchange heat with raw water fed by an external water supply pipeline and then are sent to an external cooling pool for cooling, and the raw water is sent to the exhaust steam recovery device after being heated by heat exchange;
(3) raw water entering the exhaust steam recovery device is mixed with exhaust steam for heat exchange and then is sent into the water tank;
(4) hot water in the water tank is sent into the exhaust steam recovery device through a circulating pipeline to be subjected to heat exchange and then returns to the water tank to be subjected to circulating heating, and meanwhile, the hot water output pump outputs hot water outwards according to the water level in the water tank.
9. The boiler blow-down waste heat recovery and reuse apparatus according to claim 8, characterized in that: the output method of the hot water in the water tank comprises the following steps: firstly, presetting a water outlet level, and outputting hot water outwards after the water level of a water tank is higher than the preset water outlet level by a certain height; and stopping outputting the hot water after the water level of the water tank is lower than the preset outlet water level by a certain height.
10. The boiler blow-down waste heat recovery and reuse apparatus according to claim 8, characterized in that: the circulating heating method of the hot water in the water tank comprises the following steps: firstly, presetting a circulating pressure level, and performing circulating heating after the pressure of the dead steam recovery device is greater than the circulating pressure level; and stopping the cyclic heating after the pressure of the dead steam recovery device is 0.
CN202010670076.0A 2020-07-13 2020-07-13 Boiler blow-down waste heat recycling device and method Pending CN111664440A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010670076.0A CN111664440A (en) 2020-07-13 2020-07-13 Boiler blow-down waste heat recycling device and method

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Application Number Priority Date Filing Date Title
CN202010670076.0A CN111664440A (en) 2020-07-13 2020-07-13 Boiler blow-down waste heat recycling device and method

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CN111664440A true CN111664440A (en) 2020-09-15

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113735307A (en) * 2021-08-26 2021-12-03 鹏知创科技(深圳)有限公司 Effluent treatment plant for boats and ships
CN116336455A (en) * 2023-03-31 2023-06-27 江西安亮吉热能科技有限公司 Boiler is decided to link and is arranged to carry and press heat recovery unit
CN116928654A (en) * 2023-07-14 2023-10-24 江苏国源管业有限公司 Waste heat boiler for recovering waste steam heat by utilizing flash evaporation technology

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113735307A (en) * 2021-08-26 2021-12-03 鹏知创科技(深圳)有限公司 Effluent treatment plant for boats and ships
CN116336455A (en) * 2023-03-31 2023-06-27 江西安亮吉热能科技有限公司 Boiler is decided to link and is arranged to carry and press heat recovery unit
CN116336455B (en) * 2023-03-31 2024-06-25 江西安亮吉热能科技有限公司 Boiler is decided to link and is arranged to carry and press heat recovery unit
CN116928654A (en) * 2023-07-14 2023-10-24 江苏国源管业有限公司 Waste heat boiler for recovering waste steam heat by utilizing flash evaporation technology
CN116928654B (en) * 2023-07-14 2024-03-19 江苏国源管业有限公司 Waste heat boiler for recovering waste steam heat by utilizing flash evaporation technology

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