CN102519052B - Smoke gas multi-section flow mixing energy-saving temperature reducing device - Google Patents
Smoke gas multi-section flow mixing energy-saving temperature reducing device Download PDFInfo
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- CN102519052B CN102519052B CN201110447845.1A CN201110447845A CN102519052B CN 102519052 B CN102519052 B CN 102519052B CN 201110447845 A CN201110447845 A CN 201110447845A CN 102519052 B CN102519052 B CN 102519052B
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- steam
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- heat exchanger
- smoke gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The invention relates to a smoke gas multi-section flow mixing energy-saving temperature reducing device, which consists of a case, a heat exchanger, a heat pump, a computer control system and a smoke gas conveying fan, wherein the heat exchanger consists of a spiral turbulent flow device, a secondary motive power steam operation unit and a reverse phase spiral turbulent flow device, the secondary motive power steam operation unit is clamped between the spiral turbulent flow device and the reverse phase spiral turbulent flow and consists of a generated overheat heat exchange pipe, a generated steam heat exchange pipe, a preheater heat exchange pipe, a water storage tank, a steam generating tank and a connecting pipeline, and the computer control system regulates the measured data through a sensor to generate the pump flow rate at the inlet parts of the generated overheat steam heat exchange pipe, the generated steam heat exchange pipe and the preheater heat exchange pipe. The smoke gas multi-section flow mixing energy-saving temperature reducing device has the advantages that the design is reasonable, economy and practicability are realized, the manufacture cost can also be reduced, in addition, the energy sources are saved, the safety is good, and the operation and the use are very convenient.
Description
Technical field
Smoke gas multi-section flow mixing energy-saving temperature reducing of the present invention relates to a kind of heat reclaim unit of petroleum chemical industry.
Background technology
At present flue gas as high-grade thermal source when the heat recovery; because thermograde in conventional heat transmission equipment is large, conventionally can cause the problems such as low temperature stress corrosion, heat transmission equipment reliability decrease; cause residual neat recovering system to exist cost high, the problem such as the large and tow taste heat organic efficiency of investment is low.For existing problem in above-mentioned prior art, a kind of novel smoke gas multi-section flow mixing energy-saving temperature reducing of research and design, is very necessary thereby overcome existing problem in prior art.
Summary of the invention
In view of existing problem in above-mentioned prior art; the object of the invention is a kind of novel smoke gas multi-section flow mixing energy-saving temperature reducing of research and design; thereby solve flue gas as high-grade thermal source when the heat recovery; because thermograde in conventional heat transmission equipment is large; conventionally can cause low temperature stress corrosion; the problems such as heat transmission equipment reliability decrease, causes residual neat recovering system to exist cost high, and the large and tow taste heat organic efficiency of investment is low.
Smoke gas multi-section flow mixing energy-saving temperature reducing of the present invention is made up of shell, heat-exchange device, heat pump, computer control system, Flue Gas Forced Draft Fan, described outer casing bottom is provided with air inlet, top is provided with gas outlet, heat-exchange device is equipped with in centre, heat pump is equipped with near gas outlet place in heat-exchange device top, and described Flue Gas Forced Draft Fan is connected to the air inlet of shell through pipeline.Described heat-exchange device is made up of spiral disturbing flow device, secondary power steam operation unit and anti-phase spiral disturbing flow device, and secondary power steam operation unit is clipped between spiral disturbing flow device and anti-phase spiral disturbing flow device.Described computer control system is connected to Flue Gas Forced Draft Fan, heat pump and secondary power steam operation unit by holding wire.
Secondary power steam operation of the present invention unit is made up of generation superheated steam heat exchanger tube, generating steam heat exchanger tube, forewarmer heat exchange tube, water storing tank, steam generating tank, the upper outlet of described steam generating tank is connected to the upper end that generates superheated steam heat exchanger tube by pipeline, valve, the lower end that generates superheated steam heat exchanger tube is connected to getting back to water storing tank after superheated steam user by pipeline.The outlet at bottom of described steam generating tank is connected to the lower end of generating steam heat exchanger tube through pipeline, valve, the upper end of generating steam heat exchanger tube turns back to the top of steam generating tank by pipeline.The lower end outlet of described water storing tank is connected to the upper end of forewarmer heat exchange tube by pipeline, valve, the lower end of forewarmer heat exchange tube is connected to the middle and lower part water inlet of steam generating tank by pipeline.
Spiral disturbing flow device of the present invention is identical with the structure of anti-phase spiral disturbing flow device, and installation direction is contrary.Spiral disturbing flow device is arranged on bottom, secondary power steam operation unit, and anti-phase spiral disturbing flow device is arranged on the top of secondary power steam operation unit.
The media outlet end of generation superheated steam heat exchanger tube of the present invention, generating steam heat exchanger tube, forewarmer heat exchange tube is provided with respectively temperature sensor in device.Described computer control system regulates by sensor the data that record the pump discharge that generates superheated steam heat exchanger tube, generating steam heat exchanger tube, forewarmer heat exchange tube porch.
The heat-exchange device being made up of spiral disturbing flow device, secondary power steam operation unit and anti-phase spiral disturbing flow device of the present invention can add up, and its quantity is one group to six groups, need determine according to the temperature of smoke entrance and flow velocity.
The control procedure of smoke gas multi-section flow mixing energy-saving temperature reducing of the present invention, by following steps:
First the first step, computer control system gather inlet velocity and the inlet temperature data of smoke gas multi-section flow mixing energy-saving temperature reducing medium and adjust the exchange capability of heat of each secondary power steam generation unit in device by these data.
Second step, computer control system are by the inlet temperature of device and secondary power steam generation unit, and speed and physical attribute obtain combined temp-enthalpy curve of cold fluid and hot fluid in auto levelizer.
The 3rd step, by device exit design temperature be input in computer.
The 4th step, computer control system can tentatively optimize unlatching quantity and the position of secondary power vapour system by the temperature difference threshold values of setting and the exchange capability of heat of each secondary power steam generation unit.
Whether the 5th step, computer control system are opened after secondary power steam by actuator, and the temperature in harvester exit and the temperature of setting are carried out recently judging also whether the running status of adjusting device meets the requirements, be device operation optimum state.
The 6th step, this device are integrated, and heat pump carries out recovery technology to low-grade heat.
The object of smoke gas multi-section flow mixing energy-saving temperature reducing of the present invention patent of the present invention is to adopt following technical scheme to realize: described smoke gas multi-section flow mixing energy-saving temperature reducing is by flue gas container, secondary power steam generation unit, spiral flow spoiler, heat pump, computer control system, control pump on fluid-transporting tubing and pipeline and sensor composition, its course of work is as follows:
1. the hot fluid medium that blower fan need to be lowered the temperature is blown into through this bottom of device, hot fluid is through heat exchange is not carried out in several spiral flow spoiler and the combination of secondary power steam generation unit on the same group, very unmanageable low grade heat energy recycles through heat pump subsequently, and the cooling hot fluid medium that finally reaches design temperature blows out from the exit of this device.
2. the secondary power steam generation unit in device is the unit that cold fluid and hot fluid medium carries out heat exchange, forms respectively by generating superheated steam heat exchanger tube, generating steam heat exchanger tube, forewarmer heat exchange tube, water storing tank and steam generating tank.In this unit, cooling water enters steam generator by water storing tank through forewarmer heat exchange tube, and the liquid in steam generator, through generating steam heat exchanger tube generating steam, finally generates secondary power steam by generating superheated steam heat exchanger tube.Here generate between superheated steam heat exchanger tube, generating steam heat exchanger tube, forewarmer heat exchange tube, water storing tank and steam generating tank and need to carry out pipeline connection according to pipe arrangement standard.Meanwhile, in unit, the media outlet end at superheated steam heat exchanger tube, generating steam heat exchanger tube, forewarmer heat exchange tube is provided with respectively temperature sensor in device.Computer control system regulates by sensor the data that record the pump discharge that generates superheated steam heat exchanger tube, generating steam heat exchanger tube, forewarmer heat exchange tube porch.Secondary power steam generation unit can add up, and its number needs is determined according to temperature and the flow velocity of smoke entrance.
3. the spiral flow spoiler (patented product) in device can improve the flow-disturbing degree in flue gas container, thereby has improved the heat exchange efficiency of secondary power steam generation unit.This spiral flow spoiler need be combined use with secondary power steam generation unit, the quantity of spiral flow spoiler is with secondary power steam generation unit quantity, the spiral flow spoiler of adjacent secondary power steam generation unit needs anti-phase installation, to improve the flow-disturbing degree in flue gas container, thus improved secondary power steam generation unit heat exchange efficiency.
4. implanting the computer control system of pinch technology algorithm can optimize the secondary power steam generation unit of the diverse location in startup flue gas container and the flow of its heat exchange material is controlled in the hope of device and operated steadily and capacity usage ratio optimum.The concrete operation flow process of computer control system is as follows: first computer gathers inlet velocity and the inlet temperature data of smoke gas multi-section flow mixing energy-saving temperature reducing medium and adjust the exchange capability of heat of each secondary power steam generation unit in device by these data, then computer is by the inlet temperature of device and secondary power steam generation unit, speed and physical attribute obtain combined temp-enthalpy curve of cold fluid and hot fluid in auto levelizer, finally the design temperature in device exit are input in computer.Computer can tentatively optimize unlatching quantity and the position of secondary power vapour system by the temperature difference threshold values of setting and the exchange capability of heat of each secondary power steam generation unit.Whether computer is opened after secondary power steam by actuator, and the temperature in harvester exit and the temperature of setting are carried out recently judging also whether the running status of adjusting device meets the requirements, be device operation optimum state.Finally this device is integrated, and heat pump carries out recovery technology to low-grade heat.
Smoke gas multi-section flow mixing energy-saving temperature reducing of the present invention need be according to the thermograde design secondary power steam generation unit on flue gas chamber wall and the position of spiral flow spoiler.In addition, the forewarmer heat exchange tube of steam in secondary power steam generation unit, generating steam heat exchanger tube and to generate superheated steam heat exchanger tube be all strictly to design according to the heat exchange theory of computation, implant the flow that the computer control system of pinch technology algorithm can control each secondary power steam operation unit by adjustment whole system carried out to heat exchange optimization.Start the secondary power steam generation unit of the diverse location in flue gas container and the flow of its heat exchange material is controlled.Spiral flow spoiler in device can improve the flow-disturbing degree in flue gas container, thereby has improved the heat exchange efficiency of secondary power steam generation unit.This device is integrated, and heat pump carries out recovery technology to low-grade heat.From the economy of flue gas waste heat recovery, in the angle of security reliability and energy-saving design, all there is promotional value.
The present invention is not only reasonable in design, economical and practical, can process the temperature difference large, the thermic load that pressure is high.Again can support equipment safe and reliable; Tow taste heat organic efficiency can either be improved, cost can be reduced again; And thering is the saving energy, security is good, and operation is used a kind of smoke gas multi-section flow mixing energy-saving temperature reducing very easily.
Brief description of the drawings
The present invention has three width accompanying drawings, wherein:
Accompanying drawing 1 is smoke gas multi-section flow mixing energy-saving temperature reducing structural representation;
Accompanying drawing 2 is secondary power steam operation cellular construction schematic diagrames;
Accompanying drawing 3 is that intelligent chip is realized pinch technology flow chart.
In figure: 1, shell, 2, spiral disturbing flow device, 3, secondary power steam operation unit, 4, anti-phase spiral disturbing flow device, 5, heat pump, 6, computer control system, 7, Flue Gas Forced Draft Fan, 8, generate superheated steam heat exchanger tube, 9, generating steam heat exchanger tube, 10, forewarmer heat exchange tube, 11, water storing tank, 12, steam generating tank.
Detailed description of the invention
Specific embodiments of the invention as shown in drawings, smoke gas multi-section flow mixing energy-saving temperature reducing shown in accompanying drawing 1 is made up of shell 1, heat-exchange device, heat pump 5, computer control system 6, Flue Gas Forced Draft Fan 7, described shell 1 bottom is provided with air inlet, top is provided with gas outlet, heat-exchange device is equipped with in centre, heat pump 5 is equipped with near gas outlet place in heat-exchange device top, and described Flue Gas Forced Draft Fan 7 is connected to the air inlet of shell 1 through pipeline.Described heat-exchange device is made up of spiral disturbing flow device 2, secondary power steam operation unit 3 and anti-phase spiral disturbing flow device 4, and secondary power steam operation unit 3 is clipped between spiral disturbing flow device 2 and anti-phase spiral disturbing flow device 4.Described computer control system 6 is connected to Flue Gas Forced Draft Fan 7, heat pump 5 and secondary power steam operation unit 3 by holding wire.
The attached secondary power steam operation of the present invention unit 3 that Figure 2 shows that, formed by generation superheated steam heat exchanger tube 8, generating steam heat exchanger tube 9, forewarmer heat exchange tube 10, water storing tank 11, steam generating tank 12, the upper outlet of described steam generating tank 12 is connected to the upper end that generates superheated steam heat exchanger tube 8 by pipeline, valve, the lower end that generates superheated steam heat exchanger tube 8 is connected to getting back to water storing tank 11 after superheated steam user by pipeline.The outlet at bottom of described steam generating tank 12 is connected to the lower end of generating steam heat exchanger tube 9 through pipeline, valve, the upper end of generating steam heat exchanger tube 9 turns back to the top of steam generating tank 12 by pipeline.The lower end outlet of described water storing tank 11 is connected to the upper end of forewarmer heat exchange tube 10 by pipeline, valve, the lower end of forewarmer heat exchange tube 10 is connected to the middle and lower part water inlet of steam generating tank 12 by pipeline.
Spiral disturbing flow device 2 of the present invention is identical with the structure of anti-phase spiral disturbing flow device 4, and installation direction is contrary.Spiral disturbing flow device 2 is arranged on 3 bottoms, secondary power steam operation unit, and anti-phase spiral disturbing flow device 4 is arranged on the top of secondary power steam operation unit 3.
The media outlet end of generation superheated steam heat exchanger tube 8 of the present invention, generating steam heat exchanger tube 9, forewarmer heat exchange tube 10 is provided with respectively temperature sensor in device.Described computer control system 6 regulates by sensor the data that record the pump discharge that generates superheated steam heat exchanger tube 8, generating steam heat exchanger tube 9, forewarmer heat exchange tube 10 porch.
The heat-exchange device being made up of spiral disturbing flow device 2, secondary power steam operation unit 3 and anti-phase spiral disturbing flow device 4 of the present invention is determined two groups according to temperature and the flow velocity of smoke entrance.
The control procedure of smoke gas multi-section flow mixing energy-saving temperature reducing of the present invention is by following steps: (accompanying drawing 3)
First the first step, computer control system 6 gather inlet velocity and the inlet temperature data of smoke gas multi-section flow mixing energy-saving temperature reducing medium and adjust the exchange capability of heat of each secondary power steam generation unit in device by these data.
Second step, computer control system 6 are by the inlet temperature of device and secondary power steam generation unit, and speed and physical attribute obtain combined temp-enthalpy curve of cold fluid and hot fluid in auto levelizer.
The 3rd step, by device exit design temperature be input in computer.
The 4th step, computer control system 6 can tentatively optimize unlatching quantity and the position of secondary power vapour system by the temperature difference threshold values of setting and the exchange capability of heat of each secondary power steam generation unit.
Whether the 5th step, computer control system 6 are opened after secondary power steam by actuator, and the temperature in harvester exit and the temperature of setting are carried out recently judging also whether the running status of adjusting device meets the requirements, be device operation optimum state.
The 6th step, this device are integrated, and heat pump carries out recovery technology to low-grade heat.
The above; it is only a kind of detailed description of the invention of patent of the present invention; but the protection domain of patent of the present invention is not limited to this; allly be familiar with those skilled in the art in the disclosed technical scope of patent of the present invention, within the technical scheme of patent and the design of patent of the present invention thereof are equal to and replace or change and all should be encompassed in the protection domain of patent of the present invention according to the present invention.
Claims (5)
1. a smoke gas multi-section flow mixing energy-saving temperature reducing, it is characterized in that being formed by shell (1), heat-exchange device, heat pump (5), computer control system (6), Flue Gas Forced Draft Fan (7), described shell (1) bottom is provided with air inlet, top is provided with gas outlet, heat-exchange device is equipped with in centre, heat pump (5) is equipped with near gas outlet place in heat-exchange device top, and described Flue Gas Forced Draft Fan (7) is connected to the air inlet of shell (1) through pipeline; Described heat-exchange device is made up of spiral disturbing flow device (2), secondary power steam operation unit (3) and anti-phase spiral disturbing flow device (4), and secondary power steam operation unit (3) is clipped between spiral disturbing flow device (2) and anti-phase spiral disturbing flow device (4); Described computer control system (6) is connected to Flue Gas Forced Draft Fan (7), heat pump (5) and secondary power steam operation unit (3) by holding wire.
2. smoke gas multi-section flow mixing energy-saving temperature reducing according to claim 1, it is characterized in that described secondary power steam operation unit (3) is by generating superheated steam heat exchanger tube (8), generating steam heat exchanger tube (9), forewarmer heat exchange tube (10), water storing tank (11), steam generating tank (12) forms, the upper outlet of described steam generating tank (12) passes through pipeline, valve is connected to the upper end that generates superheated steam heat exchanger tube (8), the lower end that generates superheated steam heat exchanger tube (8) is connected to getting back to water storing tank (11) after superheated steam user by pipeline, the outlet at bottom of described steam generating tank (12) is connected to the lower end of generating steam heat exchanger tube (9) through pipeline, valve, the upper end of generating steam heat exchanger tube (9) turns back to the top of steam generating tank (12) by pipeline, the lower end outlet of described water storing tank (11) is connected to the upper end of forewarmer heat exchange tube (10) by pipeline, valve, the lower end of forewarmer heat exchange tube (10) is connected to the middle and lower part water inlet of steam generating tank (12) by pipeline.
3. smoke gas multi-section flow mixing energy-saving temperature reducing according to claim 1, is characterized in that described spiral disturbing flow device (2) is identical with the structure of anti-phase spiral disturbing flow device (4), and installation direction is contrary; Spiral disturbing flow device (2) is arranged on bottom, secondary power steam operation unit (3), and anti-phase spiral disturbing flow device (4) is arranged on the top of secondary power steam operation unit (3).
4. smoke gas multi-section flow mixing energy-saving temperature reducing according to claim 2, it is characterized in that the described heat-exchange device being made up of spiral disturbing flow device (2), secondary power steam operation unit (3) and anti-phase spiral disturbing flow device (4) can add up, its quantity is one group to six groups, need determine according to the temperature of smoke entrance and flow velocity.
5. a control procedure for smoke gas multi-section flow mixing energy-saving temperature reducing, is characterized in that described control procedure is by following steps:
The first step, computer control system (6) first gather inlet velocity and the inlet temperature data of smoke gas multi-section flow mixing energy-saving temperature reducing medium and adjust the exchange capability of heat of each secondary power steam generation unit in device by these data;
Second step, computer control system (6) are by the inlet temperature of device and secondary power steam generation unit, and speed and physical attribute obtain combined temp-enthalpy curve of cold fluid and hot fluid in auto levelizer;
The 3rd step, by device exit design temperature be input in computer;
The 4th step, computer control system (6) tentatively optimize unlatching quantity and the position of secondary power vapour system by the temperature difference threshold values of setting and the exchange capability of heat of each secondary power steam generation unit;
Whether the 5th step, computer control system (6) are opened after secondary power steam by actuator, and the temperature in harvester exit and the temperature of setting are carried out recently judging also whether the running status of adjusting device meets the requirements, be device operation optimum state;
The 6th step, this device are integrated, and heat pump carries out recovery technology to low-grade heat.
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| CN201110447845.1A CN102519052B (en) | 2011-12-28 | 2011-12-28 | Smoke gas multi-section flow mixing energy-saving temperature reducing device |
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| CN201110447845.1A CN102519052B (en) | 2011-12-28 | 2011-12-28 | Smoke gas multi-section flow mixing energy-saving temperature reducing device |
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| CN102519052A CN102519052A (en) | 2012-06-27 |
| CN102519052B true CN102519052B (en) | 2014-07-23 |
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| JPS6021802U (en) * | 1983-07-18 | 1985-02-15 | 株式会社東芝 | Exhaust heat recovery heat exchanger |
| JP2959342B2 (en) * | 1993-06-17 | 1999-10-06 | 三浦工業株式会社 | Exhaust gas boiler |
| JP2002213732A (en) * | 2001-01-15 | 2002-07-31 | Electric Power Dev Co Ltd | Exhaust gas treatment system and its operation method |
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2011
- 2011-12-28 CN CN201110447845.1A patent/CN102519052B/en active Active
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| CN102099097A (en) * | 2008-08-07 | 2011-06-15 | 三菱重工业株式会社 | Apparatus for treating discharge gas and system for treating discharge gas |
| CN201470271U (en) * | 2009-03-13 | 2010-05-19 | 张兆奇 | Waste gas purifying device |
| CN202002390U (en) * | 2011-01-12 | 2011-10-05 | 李正春 | Boiler system with tail gas heat energy recycling function |
| CN202392820U (en) * | 2011-12-28 | 2012-08-22 | 一重集团大连设计研究院有限公司 | Flue gas multi-stage mixed flow energy-saving cooling equipment |
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| JP特开2002-213732A 2002.07.31 |
| JP特开平7-4601A 1995.01.10 |
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