CN106287655B - A kind of steam heat recovery technique - Google Patents
A kind of steam heat recovery technique Download PDFInfo
- Publication number
- CN106287655B CN106287655B CN201610665592.8A CN201610665592A CN106287655B CN 106287655 B CN106287655 B CN 106287655B CN 201610665592 A CN201610665592 A CN 201610665592A CN 106287655 B CN106287655 B CN 106287655B
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- CN
- China
- Prior art keywords
- steam
- water
- boiler drum
- soft water
- heat recovery
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/42—Applications, arrangements, or dispositions of alarm or automatic safety devices
- F22B37/44—Applications, arrangements, or dispositions of alarm or automatic safety devices of safety valves
- F22B37/446—Safety devices responsive to overpressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/42—Applications, arrangements, or dispositions of alarm or automatic safety devices
- F22B37/46—Applications, arrangements, or dispositions of alarm or automatic safety devices responsive to low or high water level, e.g. for checking, suppressing, extinguishing combustion in boilers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a kind of steam heat recovery technique, comprise the following steps：Water is handled by softening water treatment system, into softening water tank；The soft water of softening water tank injects oxygen-eliminating device by power pump station；The soft water formed after oxygen-eliminating device thermal de-aeration is divided into two-way soft water stream, after soft water flows through circulation pump group pressurization all the way, into economizer, then returns to oxygen-eliminating device through recirculated water tedge；Another way soft water stream enters boiler feed pump, and boiler drum and storage heater are entered after supercharging；Soft water into boiler drum enters two passages through boiler drum down-comer, form vapor injection forced circulation system and natural cycle system, after the steam water interface that the two systems are taken back returns to boiler drum, steam-water separation is carried out on boiler drum cylinder top, the steam of generation is sent to storage heater；Steam in storage heater enters recycling device and is recycled.The present invention is effectively utilized the waste heat of steam, improves energy utilization rate, reduces the loss and waste of heat.
Description
Technical field
The present invention relates to field of environment protection, more particularly to a kind of steam heat recovery technique.
Background technology
In industrial circle, frequently encounter and equipment is heated using steam, is sterilized etc. or raw material is heated, is steamed
Hair etc., however, substantial amounts of tail gas can be produced in this course, and these tail gas are directly discharged in air.It is most
The temperature of tail gas is very high, and the thermal energy of this part so directly results in thermal energy equivalent to 20% or so of production consumption thermal energy
Waste.
The content of the invention
The defects of in order to overcome the prior art, the present invention propose a kind of steam heat recovery technique, can solve steam
The problem of waste heat recovery.
To achieve these goals, the present invention is achieved by the following technical solutions：
A kind of steam heat recovery technique, comprises the following steps,
S1：Water is handled by softening water treatment system, enters softening water tank；
S2：The soft water of softening water tank injects oxygen-eliminating device by power pump station；
S3：The soft water formed after oxygen-eliminating device thermal de-aeration is divided into two-way soft water stream, and soft water flows through circulation pump group and adds all the way
After pressure, into economizer, then oxygen-eliminating device is returned to through recirculated water tedge；Another way soft water stream enters boiler feed pump, supercharging
Enter boiler drum and storage heater afterwards；
S4：Soft water into boiler drum enters two passages through boiler drum down-comer, forms the first soft water stream respectively
With the second soft water stream；
S5：First soft water stream by down-comer after circulation pump group supercharging, into heat exchanger, in water screen tube with high temperature
Flue gas heat exchange, generates steam water interface, then returns to boiler drum via tedge, forms vapor injection forced circulation system；The
Two soft water streams and flue fire door section composition natural cycle system；
S6：After the steam water interface that vapor injection forced circulation system and natural cycle system are taken back returns to boiler drum,
Steam-water separation is carried out on boiler drum cylinder top, the steam of generation is sent to storage heater；
S7：Steam in storage heater enters recycling device and is recycled.
Preferably, the softening water treatment system is started using flow inductor.
Preferably, the boiler drum, the softening water treatment system, be equipped with blowdown on the oxygen-eliminating device and go out
The mouth of a river.
Preferably, phosphate chemical feed pipe, continuous blowdown pipe are provided with the boiler drum, emergency blowoff pipe, is followed again
Endless tube, is provided with two-colour fluviograph, pressure gauge and 2 safety valves on the boiler drum.
Preferably, the flue fire door section includes multiple fire door sections.
Preferably, the heat exchanger uses tubular heat exchanger.
Preferably, the steam in the storage heater send to Steam Turbine and generates electricity.
Preferably, the steam in the storage heater is sent to converter by overheating gas-distributing cylinder.
Preferably, the steam in the storage heater is sent to outer net by saturation gas-distributing cylinder and used.
Compared to the prior art the present invention, has the advantages that：The present invention is effectively utilized the waste heat of steam, improves
Energy utilization rate, reduces the loss and waste of heat.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the process flow chart of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.
Steam heat recovery technique as shown in Figure 1, comprises the following steps：
S1：Water is handled by softening water treatment system, enters softening water tank；The water supply of water system is per small
When 20 tons, pressure of supply water~1.5MPa, water source by soft water manifold supply softening water treatment system.
Wherein, the softening water treatment system is started using automatical softener and using flow inductor.
S2：The soft water of softening water tank injects oxygen-eliminating device by power pump station；
S3：The soft water formed after oxygen-eliminating device thermal de-aeration is divided into two-way soft water stream, and soft water flows through circulation pump group and adds all the way
After pressure, into economizer, then oxygen-eliminating device is returned to through recirculated water tedge；Another way soft water stream enters boiler feed pump, supercharging
Enter boiler drum and storage heater afterwards；
S4：Soft water into boiler drum enters two passages through boiler drum down-comer, forms the first soft water stream respectively
With the second soft water stream；
S5：First soft water stream by down-comer after circulation pump group supercharging, into heat exchanger, in water screen tube with high temperature
Flue gas heat exchange, generates steam water interface, then returns to boiler drum via tedge, forms vapor injection forced circulation system；The
Two soft water streams and flue fire door section composition natural cycle system；
S6：After the steam water interface that vapor injection forced circulation system and natural cycle system are taken back returns to boiler drum,
Steam-water separation is carried out on boiler drum cylinder top, the steam of generation is sent to storage heater；
S7：Steam in storage heater enters recycling device and is recycled.
The softening water treatment system is started using flow inductor.
The boiler drum, the softening water treatment system, be equipped with blowdown water outlet on the oxygen-eliminating device.
Phosphate chemical feed pipe, continuous blowdown pipe, emergency blowoff pipe, recirculation pipe are provided with the boiler drum,
Two-colour fluviograph, pressure gauge and 2 safety valves are provided with the boiler drum.
The flue fire door section includes multiple fire door sections.
The heat exchanger uses tubular heat exchanger.
Steam in the storage heater send to Steam Turbine and generates electricity, or the steam in the storage heater passes through overheat
Gas-distributing cylinder is sent to converter, or the steam in the storage heater is sent to outer net by saturation gas-distributing cylinder and used.
For systems stabilisation pressure, the operating pressure of boiler drum and storage heater is set as 1.8MPa, send the steaming of converter
Steam pressure controls the pressure in 1.2MPa, sending steam-electric power to control the personal automatic steam control in 0.6 1 1.0MPa, sending outer net steam
Drain valve is installed in 0.2MPa, and in the minimum point of each pipeline, water-discharging at fixed point, reduces steam quantity of exchanged water.Meanwhile select new
Steam filter also play the effect of dry steam；It is at the same time that all boiler drums and storage heater are in parallel, it is steady to improve system
It is qualitative.
Since the unstability of steam generation causes internal system pressure to be chronically at fluctuation status；Steam is in course of conveying
Middle heat release is changed into water, and substantial amounts of water aggregation had not only influenced pipe network operation safety, but also reduce steam and return it will cause pipe vibration
Receive；Because being chronically exposed in air, valve seal corrosion causes steam leakage, pipe insulating layer peeling to make for pipeline and valve everywhere
It is low into Steam Recovery temperature；Operating personnel also influence amount of steam withdrawn to the control accuracy of system and blowdown etc..
By taking above-mentioned recovery process, hence it is evident that improve amount of steam withdrawn, improve what recovered steam benefit now recycled
Steam is mainly used for steam turbine power generation, has not only improved stainless steel company self power generation ability, but also reduces purchases strategies, and effect is very
It is considerable.
Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
The all other embodiment obtained, belongs to the scope of protection of the invention.Although the present invention is illustrated with regard to preferred embodiment
And description, can be with it is understood by those skilled in the art that without departing from scope defined by the claims of the present invention
Variations and modifications are carried out to the present invention.
Claims (9)
- A kind of 1. steam heat recovery method, it is characterised in that：Comprise the following steps,S1：Water is handled by softening water treatment system, enters softening water tank；S2：The soft water of softening water tank injects oxygen-eliminating device by power pump station；S3：The soft water formed after oxygen-eliminating device thermal de-aeration is divided into two-way soft water stream, after soft water flows through circulation pump group pressurization all the way, Into economizer, then oxygen-eliminating device is returned to through recirculated water tedge；Another way soft water stream enters boiler feed pump, enters after supercharging Boiler drum and storage heater；S4：Soft water into boiler drum enters two passages through boiler drum down-comer, forms the first soft water stream and respectively Two soft water streams；S5：First soft water stream by down-comer after circulation pump group supercharging, into heat exchanger, in water screen tube with high-temperature flue gas Heat exchange, generates steam water interface, then returns to boiler drum via tedge, forms vapor injection forced circulation system；Second is soft Current and flue fire door section composition natural cycle system；S6：After the steam water interface that vapor injection forced circulation system and natural cycle system are taken back returns to boiler drum, in pot Stove boiler barrel cylinder top carries out steam-water separation, and the steam of generation is sent to storage heater；S7：Steam in storage heater enters recycling device and is recycled.
- A kind of 2. steam heat recovery method according to claim 1, it is characterised in that：The softening water treatment system Started using flow inductor.
- A kind of 3. steam heat recovery method according to claim 1, it is characterised in that：It is the boiler drum, described Softening water treatment system, be equipped with blowdown water outlet on the oxygen-eliminating device.
- A kind of 4. steam heat recovery method according to claim 1, it is characterised in that：Set in the boiler drum There are phosphate chemical feed pipe, continuous blowdown pipe, emergency blowoff pipe, recirculation pipe, double-colored water is provided with the boiler drum Position meter, pressure gauge and 2 safety valves.
- A kind of 5. steam heat recovery method according to claim 1, it is characterised in that：The flue fire door section includes Multiple fire door sections.
- A kind of 6. steam heat recovery method according to claim 1, it is characterised in that：The heat exchanger uses tubulation Formula heat exchanger.
- A kind of 7. steam heat recovery method according to claim 1, it is characterised in that：Steam in the storage heater Send to Steam Turbine and generate electricity.
- A kind of 8. steam heat recovery method according to claim 1, it is characterised in that：Steam in the storage heater Sent by overheating gas-distributing cylinder to converter.
- A kind of 9. steam heat recovery method according to claim 1, it is characterised in that：Steam in the storage heater Sent to outer net and used by saturation gas-distributing cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610665592.8A CN106287655B (en) | 2016-08-12 | 2016-08-12 | A kind of steam heat recovery technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610665592.8A CN106287655B (en) | 2016-08-12 | 2016-08-12 | A kind of steam heat recovery technique |
Publications (2)
| Publication Number | Publication Date |
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| CN106287655A CN106287655A (en) | 2017-01-04 |
| CN106287655B true CN106287655B (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610665592.8A Expired - Fee Related CN106287655B (en) | 2016-08-12 | 2016-08-12 | A kind of steam heat recovery technique |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107500461B (en) * | 2017-08-04 | 2020-07-24 | 河南中烟工业有限责任公司 | Chemical and thermal combined action deoxidizing system for softened water of boiler |
| CN111926173B (en) * | 2020-07-27 | 2022-05-03 | 武汉钢铁有限公司 | Vaporization cooling system and method for stepping heating furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005069518A (en) * | 2003-08-20 | 2005-03-17 | Miura Co Ltd | Heat recovering device |
| CN201502411U (en) * | 2009-09-07 | 2010-06-09 | 中冶赛迪工程技术股份有限公司 | Steam power generating system by utilizing residual heat of converter gas |
| CN103388817A (en) * | 2013-07-16 | 2013-11-13 | 广西华锐钢铁工程设计咨询有限责任公司 | Residual heat recovery system of sewage water of coke dry quenching boiler |
| CN203296838U (en) * | 2013-06-20 | 2013-11-20 | 华效资源有限公司 | Heating furnace flue gas and steam waste heat recovery and power generation system |
| CN105200184A (en) * | 2015-09-25 | 2015-12-30 | 中国科学院力学研究所 | System for dragging converter flue gas induced draft fan by aid of converter steam |
-
2016
- 2016-08-12 CN CN201610665592.8A patent/CN106287655B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005069518A (en) * | 2003-08-20 | 2005-03-17 | Miura Co Ltd | Heat recovering device |
| CN201502411U (en) * | 2009-09-07 | 2010-06-09 | 中冶赛迪工程技术股份有限公司 | Steam power generating system by utilizing residual heat of converter gas |
| CN203296838U (en) * | 2013-06-20 | 2013-11-20 | 华效资源有限公司 | Heating furnace flue gas and steam waste heat recovery and power generation system |
| CN103388817A (en) * | 2013-07-16 | 2013-11-13 | 广西华锐钢铁工程设计咨询有限责任公司 | Residual heat recovery system of sewage water of coke dry quenching boiler |
| CN105200184A (en) * | 2015-09-25 | 2015-12-30 | 中国科学院力学研究所 | System for dragging converter flue gas induced draft fan by aid of converter steam |
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| Publication number | Publication date |
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| CN106287655A (en) | 2017-01-04 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Tao Weibin Inventor before: He Ying |
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| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180408 Address after: 314031 Baodi building, Xiuzhou District, Jiaxing, Zhejiang Province, 27 Applicant after: China energy saving Jiaxing Building Energy Co., Ltd. Address before: Guangzhou City, Luogang District Pu Xin Da Yang Street Guangdong 510000 Lane seven No. 4 Applicant before: He Ying |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180501 Termination date: 20190812 |
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| CF01 | Termination of patent right due to non-payment of annual fee |