CN107448965A - A kind of Novel incineration furnace fume afterheat depth recovery and energy level lifting process system - Google Patents
A kind of Novel incineration furnace fume afterheat depth recovery and energy level lifting process system Download PDFInfo
- Publication number
- CN107448965A CN107448965A CN201710574707.7A CN201710574707A CN107448965A CN 107448965 A CN107448965 A CN 107448965A CN 201710574707 A CN201710574707 A CN 201710574707A CN 107448965 A CN107448965 A CN 107448965A
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- Prior art keywords
- lithium
- heat
- energy level
- fume afterheat
- recovery
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of recovery of Novel incineration furnace fume afterheat depth and energy level lifting process system, including high pressure heat-exchange system, the lithium-bromide solution circulatory system and low-temperature flue gas heat-exchange system, the high pressure heat exchange system includes high pressure heat exchanger, second circulation water pump and generator, the lithium-bromide solution circulatory system includes generator, solution heat exchanger, absorber, evaporator, condenser, lithium-bromide solution circulating pump, lithium-bromide solution throttling arrangement and water as refrigerant throttling arrangement, the low-temperature flue gas heat-exchange system includes the anticorrosive heat exchanger of circulating water heating, first circulation water pump and evaporator.The system can improve tail gas burning furnace flue gas waste heat recovery efficiency, the blocking etching problem faced when avoiding tail gas burning furnace fume afterheat less than acid dew point recovery.
Description
Technical field
The present invention relates to heat recovery technology field, specifically, is related to a kind of Novel incineration furnace fume afterheat depth and returns
Receipts and energy level lifting process system.
Background technology
Important production process equipment of the tail gas burning furnace as purifying device for natural gas, its power consumption account for device total energy consumption
40%.The heat loss of tail gas burning furnace has：Flue gas loss, air excess loss, preserving heat and radiating heat loss and fuel are imperfect combustion
Loss etc..Wherein, flue gas loss accounts for the 80% of whole heat loss, and it is the main factor of stove heat loss that exhaust gas temperature is too high.
For natural gas purification station-service tail gas burning furnace, when exhaust gas temperature drops to less than 400 DEG C, SO2Will be with vapor
Symphysis is into sulfuric acid vapor；During less than dew-point temperature, sulfuric acid vapor is agglomerated to more than stove top air preheater, waste heat industrial furnace etc.
On the heat-transfer surface of heat recovery equipment, strong low temperature sulfuric acid corrosion is produced, so as to cause heating furnace to be not normally functioning.In order to keep away
Exempt from the generation of low temperature sulfuric acid corrosion, at present general 160 DEG C -230 DEG C of commercial industry stove design smoke evacuation, large scale industry stove 120 DEG C -
160℃；This exhaust gas temperature is too high excessive by the heat loss due to exhaust gas for causing incinerator, and foot phenomenon is not serious for energy regenerating.
In order to improve the thermal efficiency of stove, generally there is tubular air preheating using flue gas waste heat recovery measure at present both at home and abroad
Device, hot pipe technique, water heat medium technology etc..Wherein, tubular air preheater takes cold and hot medium direct heat transfer form, by steel pipe,
Tube sheet and housing composition, have the advantages that simple in construction, easy to manufacture, cheap, no-rotary part.Hot pipe technique is close
First it is evacuated in the pipe closed, is filled with appropriate working medium in this case, heated in the lower end of heat pipe, working medium absorbs heat and is vaporizated into
Steam, under small pressure difference, heat pipe upper end is risen to, and outwardly release heat, be condensed into liquid.Condensate liquid is in gravity
Under effect, heating section is returned to along heat pipe inner wall, and vaporization of being heated again, so moved in circles, continuously by heat by
One end is transmitted to the other end, has the advantages that heat transfer efficiency is high, compact-sized.Water heat medium technology be by the use of deaerated water with pressure as
Heating agent, in one is closed heat-exchange system, waste heat in flue gas is absorbed, for heating furnace for preheating combustion air or processing medium,
Reciprocation cycle.Advantage is to be adapted to the requirement of fuel, heating furnace load variations and seasonal variations.These technologies be to higher than
Acid dew point incinerator smoke waste heat is recycled, not to being recycled less than acid dew point fume afterheat.Due to tail
Contain substantial amounts of vapor in gas incinerator smoke, when flue-gas temperature is less than dew-point temperature, has Water vapor condensation and release
A large amount of latent heat；These latent heat are reclaimed and energy level lifting utilizes, the UTILIZATION OF VESIDUAL HEAT IN for greatly improving tail gas burning furnace is imitated
Rate, but do not have corresponding fume afterheat depth recovery and energy level technology at present.
In summary, at present there is following ask in the flue gas waste heat recovery process aspect of natural gas purification station-service tail gas burning furnace
Topic：
(1) tail gas burning furnace residual neat recovering system smog discharge temperature is higher (120 DEG C -230 DEG C), energy regenerating deficiency；
(2) lack at present less than the recovery of acid dew-point temperature tail gas burning furnace fume afterheat depth and energy level lifting process system
System, cause the serious waste of a large amount of vapor latent heat in tail gas burning furnace flue gas；
(3) it is currently below acid dew-point temperature tail gas burning furnace fume afterheat and carries out depth recovery, is faced with sulfuric acid vapor
Condense corrosion and the blockage problem for causing heat transmission equipment.
The content of the invention
It is an object of the invention to overcome Gas Purification Factory tail gas burning furnace fume afterheat present in prior art to return
Receive deficiency, the low problem of organic efficiency, there is provided a kind of Novel incineration furnace fume afterheat depth recovery and energy level lifting process system, should
System can improve tail gas burning furnace flue gas waste heat recovery efficiency, face when avoiding being less than acid dew point tail gas burning furnace flue gas waste heat recovery
The blocking etching problem faced.
Its concrete technical scheme is：
A kind of Novel incineration furnace fume afterheat depth recovery and energy level lifting process system, including high pressure heat-exchange system,
The lithium-bromide solution circulatory system and low-temperature flue gas heat-exchange system, the high pressure heat exchange system include high pressure heat exchanger 1, second circulation
Water pump 10 and generator 2, the lithium-bromide solution circulatory system include generator 2, solution heat exchanger 4, absorber 5, evaporator
6th, condenser 3, lithium-bromide solution circulating pump 8, lithium-bromide solution throttling arrangement 11 and water as refrigerant throttling arrangement 12, the low temperature
Smoke heat exchanging system includes circulating water heating anticorrosive heat exchanger 7, first circulation water pump 9 and evaporator 6.
Compared with prior art, beneficial effects of the present invention are：
Relatively conventional tail gas burning furnace flue gas waste heat recovery technique, the process system realizes to be burned less than acid dew-point temperature
The depth recovery and utilization of furnace exhaust gas waste heat.
Compared with traditional tail gas burning furnace flue gas waste heat recovery process system, there is the system incinerator smoke waste heat to return
Receive efficiency high, the advantages of incinerator exhaust gas temperature is low.
The process system solves the energy level lifting and heat exchange less than recovery waste heat in acid dew point tail gas burning furnace flue gas
Equipment is anticorrosive and blockage problem, improves the reliability of the process system.
Brief description of the drawings
Fig. 1 is the schematic diagram of Novel incineration furnace fume afterheat depth of the present invention recovery and energy level lifting process system；Wherein,
Fine line represents lithium bromide weak solution；Fine dotted line represents lithium bromide concentrated solution；Thick dashed line represents refrigerant water；Two-dot chain line represents
Flue gas；Heavy line represents boiler water；
Fig. 2 is showing for the embodiment 1 of Novel incineration furnace fume afterheat depth of the present invention recovery and energy level lifting process system
It is intended to, wherein, fine line represents lithium bromide weak solution；Fine dotted line represents lithium bromide concentrated solution；Thick dashed line represents refrigerant water；It is double
Dotted line represents flue gas；Heavy line represents boiler water.
Embodiment
Technical scheme is described in more detail with specific embodiment below in conjunction with the accompanying drawings.
Reference picture 1, a kind of Novel incineration furnace fume afterheat depth recovery and energy level lifting process system, including hot high pressure are handed over
System, the lithium-bromide solution circulatory system and low-temperature flue gas heat-exchange system are changed, it is mainly by high pressure heat exchanger 1, generator 2, condensation
Device 3, solution heat exchanger 4, absorber 5, evaporator 6, circulating water heating with anticorrosive heat exchanger 7, lithium-bromide solution circulating pump 8,
First circulation water pump 9 and second circulation water pump 10, lithium-bromide solution throttling arrangement 11 and water as refrigerant throttling arrangement 12 etc. form.
Specific embodiment is as follows：High-temperature flue gas is exchanged heat in hp heat exchanger 1 with cycle of higher pressure water, caused
HTHP hot water enters generator 2 by water circulating pump 10, the lithium bromide weak solution in heating generator 2, passes through and heats production
Raw cryogen water vapour is exchanged heat into condenser 3 with boiler water, releases heat and heating boiler water, so that water as refrigerant steams
Vapour exothermic condensation；The refrigerant water that condenser 3 comes out throttles through throttling arrangement 12 becomes the refrigerant water and steam of low-temp low-pressure；
Water as refrigerant is vaporizated into cryogen water vapour in the absorbed inside low-temperature flue gas side recirculated water heat of evaporator 6, and enters absorber 5；
Inside absorber 5, the concentrated solution from solution heat exchanger 4 absorbs cryogen water vapour, and releases heat and be changed into dilute molten later
Liquid；Weak solution is entered generator 2 by solution heat exchanger 4 after concentrated solution preheating, again by high temperature inside generator 2
The heating of cycle of higher pressure water separates out cryogen water vapour, the above-mentioned progress that moves in circles.Burning on fume in high temperature in the high pressure heat exchanger 1 with
HTHP recirculated water is exchanged heat, and driving heat source is provided to generator 2；The later flue gas of the internal heat of high pressure heat exchanger 1 enters
Enter the anticorrosive heat exchanger 7 of circulating water heating, by low pressure recycle water absorbing and cooling temperature, realize less than acid dew-point temperature fume afterheat
Depth reclaims.Low temperature boiler water initially enters absorber 5, and heat heating is absorbed in the absorber 5, subsequently into condenser 3,
High-temperature boiler water is heated to be by cryogen vapor, realizes the energy level lifting of flue gas low grade residual heat.
Embodiment
A kind of Novel incineration furnace fume afterheat depth recovery and energy level lifting process system, as shown in Figure 2.By high pressure heat exchange
Device 1, generator 2 and low pressure generator 13, condenser 3, heat exchanger 4 and high-temperature heat exchanger 14, absorber 5, evaporator 6,
Circulating water heating anticorrosive heat exchanger 7, lithium-bromide solution circulating pump 8, first circulation water pump 9 and second circulation water pump 10, bromine
Change lithium solution throttling arrangement 11 and the grade of water as refrigerant throttling arrangement 12 composition.The generator 2 is high pressure generator, and the heat is handed over
Parallel operation 4 is low temperature heat exchanger.Specific embodiment is as follows：The high-temperature flue gas that incinerator comes out first passes around hp heat exchanger
1 is exchanged heat with cycle of higher pressure water, and the HTHP hot water for exchanging heat later enters high pressure generator 2；HTHP hot water is in height
Heating lithium-bromide solution in generator 2 is pressed, produces high temperature refrigerant vapor and lithium bromide intermediate concentration solution；This intermediate concentration
Solution releases partial heat through high-temperature heat exchanger 14, and enters low pressure generator 13 after choke valve 15 throttles, by from
The high-temperature steam heating of high pressure generator 2, and refrigerant vapor is produced again, form lithium bromide concentrated solution；Refrigerant vapour
Heat release is carried out into condenser 3, realizes that boiler water heats, concentrated solution releases partial heat again through low temperature heat exchanger 4, finally
6 vapor of flash-pot is absorbed in absorber 5, weak solution is formed after releasing heat.Remainder circulates and specific reality
It is similar to apply scheme.
The present invention realizes the depth recovery and utilization less than acid dew-point temperature tail gas from incinerator waste heat.With incinerator cigarette
Gas waste heat recovery efficiency high, incinerator exhaust gas temperature are low.Solve less than recovery waste heat in acid dew point tail gas burning furnace flue gas
Energy level is lifted and heat transmission equipment is anticorrosive and blockage problem, improves the reliability of the process system.
The foregoing is only a preferred embodiment of the present invention, protection scope of the present invention not limited to this, any ripe
Those skilled in the art are known in the technical scope of present disclosure, the letter for the technical scheme that can be become apparent to
Altered or equivalence replacement are each fallen within protection scope of the present invention.
Claims (4)
1. a kind of Novel incineration furnace fume afterheat depth recovery and energy level lifting process system, it is characterised in that including hot high pressure
Exchange system, the lithium-bromide solution circulatory system and low-temperature flue gas heat-exchange system, the high pressure heat exchange system include high pressure heat exchanger
(1), second circulation water pump (10) and generator (2), the lithium-bromide solution circulatory system includes generator (2), solution exchanges
Device (4), absorber (5), evaporator (6), condenser (3), lithium-bromide solution circulating pump (8), lithium-bromide solution throttling arrangement
(11) and water as refrigerant throttling arrangement (12), the low-temperature flue gas heat-exchange system include the anticorrosive heat exchanger of circulating water heating
(7), first circulation water pump (9) and evaporator (6).
2. the recovery of Novel incineration furnace fume afterheat depth and energy level lifting process system, its feature exist according to claim 1
In the lithium-bromide solution circulatory system is used to reduce incinerator exhaust gas temperature, lifts fume afterheat energy level.
3. the recovery of Novel incineration furnace fume afterheat depth and energy level lifting process system, its feature exist according to claim 1
In the high pressure heat-exchange system is used to drive the lithium-bromide solution circulatory system, realizes the energy level of tail gas burning furnace fume afterheat
Lifting.
4. the recovery of Novel incineration furnace fume afterheat depth and energy level lifting process system, its feature exist according to claim 1
It is used to completely cutting off in, the low-temperature flue gas heat-exchange system direct less than acid dew point tail gas burning furnace flue gas and the lithium bromide circulatory system
Effect.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710574707.7A CN107448965A (en) | 2017-07-14 | 2017-07-14 | A kind of Novel incineration furnace fume afterheat depth recovery and energy level lifting process system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710574707.7A CN107448965A (en) | 2017-07-14 | 2017-07-14 | A kind of Novel incineration furnace fume afterheat depth recovery and energy level lifting process system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375239A (en) * | 2018-04-28 | 2018-08-07 | 中冶焦耐(大连)工程技术有限公司 | The method and system of Water heating system waste heating are distilled using high temperature coal-tar |
| CN108980815A (en) * | 2018-08-20 | 2018-12-11 | 中国华电科工集团有限公司 | A kind of flue gas heat recovery system and method that combustion gas generates |
| CN110425560A (en) * | 2019-08-15 | 2019-11-08 | 北京清投环能科技有限公司 | A kind of efficient boiler integrated system and its control method |
| CN113357660A (en) * | 2021-05-17 | 2021-09-07 | 湖南省特种设备检验检测研究院 | Cooling and heating system based on plume elimination and waste heat recovery of gas boiler flue gas |
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| CN201615651U (en) * | 2009-10-27 | 2010-10-27 | 中国石油化工股份有限公司 | Refrigeration heat pump device taking high-temperature flue gas as power |
| JP2011174652A (en) * | 2010-02-24 | 2011-09-08 | Metawater Co Ltd | Exhaust heat power generation method and system |
| CN206222351U (en) * | 2016-11-18 | 2017-06-06 | 北京大道信通科技股份有限公司 | A kind of low-temperature flue gas waste heat recovery system |
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2017
- 2017-07-14 CN CN201710574707.7A patent/CN107448965A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201615651U (en) * | 2009-10-27 | 2010-10-27 | 中国石油化工股份有限公司 | Refrigeration heat pump device taking high-temperature flue gas as power |
| JP2011174652A (en) * | 2010-02-24 | 2011-09-08 | Metawater Co Ltd | Exhaust heat power generation method and system |
| CN206222351U (en) * | 2016-11-18 | 2017-06-06 | 北京大道信通科技股份有限公司 | A kind of low-temperature flue gas waste heat recovery system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375239A (en) * | 2018-04-28 | 2018-08-07 | 中冶焦耐(大连)工程技术有限公司 | The method and system of Water heating system waste heating are distilled using high temperature coal-tar |
| CN108980815A (en) * | 2018-08-20 | 2018-12-11 | 中国华电科工集团有限公司 | A kind of flue gas heat recovery system and method that combustion gas generates |
| CN110425560A (en) * | 2019-08-15 | 2019-11-08 | 北京清投环能科技有限公司 | A kind of efficient boiler integrated system and its control method |
| CN110425560B (en) * | 2019-08-15 | 2024-02-20 | 清华大学山西清洁能源研究院 | Integrated boiler system and control method thereof |
| CN113357660A (en) * | 2021-05-17 | 2021-09-07 | 湖南省特种设备检验检测研究院 | Cooling and heating system based on plume elimination and waste heat recovery of gas boiler flue gas |
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