CN108827044A - Two circuit heat-exchange systems and heat-exchange method for biomass fluidized bed gasification furnace - Google Patents
Two circuit heat-exchange systems and heat-exchange method for biomass fluidized bed gasification furnace Download PDFInfo
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- CN108827044A CN108827044A CN201810802906.3A CN201810802906A CN108827044A CN 108827044 A CN108827044 A CN 108827044A CN 201810802906 A CN201810802906 A CN 201810802906A CN 108827044 A CN108827044 A CN 108827044A
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- Prior art keywords
- heat
- oil
- conduction oil
- fluidized bed
- exchange
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Links
- 238000002309 gasification Methods 0.000 title claims abstract description 47
- 239000002028 Biomass Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000003546 flue gas Substances 0.000 claims description 3
- 239000000567 combustion gas Substances 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract description 2
- 239000004071 soot Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 7
- 238000004064 recycling Methods 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
- C10J3/56—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F23/00—Features relating to the use of intermediate heat-exchange materials, e.g. selection of compositions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0916—Biomass
Abstract
Two circuit heat-exchange systems and heat-exchange method for biomass fluidized bed gasification furnace.The gasification burning temperature of output is 700 ~ 800 DEG C, conveying equipment type selecting is relatively difficult, it cannot achieve the conveying of high-temperature gasification combustion gas, gasification burning temperature starts that tar is precipitated when being lower than 350 DEG C, can be bonded in exchanger tube wall after precipitation or even can block heat exchanger causes equipment to be stopped transport, and cannot thoroughly solve the problems, such as that tar is precipitated by soot blower.The present invention forms：Heat-exchanging loop and store loop, the heat-exchanging loop include oil gas heat exchanger（4）With oil water heat exchange device（5）, the conduction oil outlet of the oil gas heat exchanger is connected to the heat conducting oil inlet of the oil water heat exchange device, the heat conducting oil inlet and conduction oil expansion drum of the oil gas heat exchanger（2）Conduction oil outlet pass through heat conduction oil circulating pump（3）Connection.The present invention is used for the two circuit heat-exchange systems and heat-exchange method of biomass fluidized bed gasification furnace.
Description
Technical field：
The present invention relates to a kind of gasification furnace heat-exchange systems, and in particular to a kind of two circuits for biomass fluidized bed gasification furnace are changed
Hot systems and heat-exchange method.
Background technique：
As the requirement of Environmental protection is continuously improved, the importance of the renewable energy such as biomass is gradually increased, country
The multinomial file of successively issue, energetically biological support matter generation technology application.
China's biomass energy is at present mainly based on agriculture and forestry organic waste material, and agricultural wastes are mainly agricultural crop straw, mainly
Based on corn, wheat, paddy stalk, calorific value is annual for the stalk amount of resource utilization in 3000-3500kcal/kg
About 400,000,000 tons, amount of storage is huge.
Biomass Energy Utilization mode there are several types of：1, pure fired biomass generation technology（Direct combustion power generation）；2, biomass
Mix burning generation technology；3, boiler and biomass coupled electricity-generation technology.
Wherein boiler has following advantage compared to other two kinds with biomass coupled electricity-generation technology：It is measurable to mix burning amount, energy
Enjoy national preferential policy；Can be by large-sized unit high parameter advantage, generating efficiency is high；It can be real by large-sized unit environment-friendly advantage
Now minimum discharge.Therefore, biomass coupled electricity-generation technology will be greatly developed and be promoted in the near future.
Biomass fuel gasifies in gasification furnace generates biological fuel gas, and biological fuel gas is defeated after cyclone dedusting
Out.Since the gasification burning temperature of output is higher, about 700 ~ 800 DEG C, conveying equipment type selecting is relatively difficult, or even cannot achieve
The conveying of high-temperature gasification combustion gas.In order to guarantee the service condition of upstream device, contain in the gasification burning generated after gasification of biomass
There is a small amount of tar, starts to be precipitated when gasification burning temperature is lower than 350 DEG C.Tar can be bonded in exchanger tube wall after being precipitated,
And can constantly in conjunction with the flying dust in gasification burning, not only can heat exchanger heat transfer influential effect, or even heat exchanger can be blocked and led
It causes equipment to stop transport, cannot thoroughly solve the problems, such as that tar is precipitated by soot blower.
Summary of the invention：
Present invention aim to address the odd gasification burning temperature height of existing gasification furnace cannot achieve conveying, and temperature is too low to be caused
The problem of tar is precipitated, provide it is a kind of by control heat conducting oil inlet temperature control gasification burning outlet temperature for biomass
The two circuit heat-exchange systems and heat-exchange method of fluidized-bed gasification furnace.
Above-mentioned purpose is realized by following technical scheme：
A kind of two circuit heat-exchange systems for biomass fluidized bed gasification furnace, composition include：Heat-exchanging loop and store loop,
The heat-exchanging loop includes oil gas heat exchanger and oil water heat exchange device, the conduction oil outlet of the oil gas heat exchanger and described
The heat conducting oil inlet of oil water heat exchange device is connected to, the heat conducting oil inlet of the oil gas heat exchanger and the conduction oil of conduction oil expansion drum
Outlet is connected by heat conduction oil circulating pump.
The two circuit heat-exchange systems for biomass fluidized bed gasification furnace, the store loop includes conduction oil
Storage tank, the thermally conductive oil tank pass through piping connection with the oil gas heat exchanger and the conduction oil expansion drum respectively.
The two circuit heat-exchange systems for biomass fluidized bed gasification furnace, the conduction oil expansion drum it is thermally conductive
Oil-in and discharge pump pass through piping connection.
The two circuit heat-exchange systems for biomass fluidized bed gasification furnace, the conduction oil of the oil water heat exchange device
Outlet is connected to the entrance of the heat conduction oil circulating pump.
The two circuit heat-exchange systems for biomass fluidized bed gasification furnace, the cooling water of the oil water heat exchange device
Entrance is connected to water supply system.
A kind of heat-exchange method of the two circuit heat-exchange systems for biomass fluidized bed gasification furnace, this method include following step
Suddenly：Conduction oil is introduced into conduction oil expansion drum by conduction oil by discharge pump, is entered after boosting using heat conduction oil circulating pump
Oil gas heat exchanger, the temperature for entering the conduction oil of oil gas heat exchanger is 210 DEG C or more, the high-temperature heat-conductive generated after heating
It after oil is cooling in oil water heat exchange device, returns in the oil supply pipe of Heat-transfer Oil Pump, realizes recycling for conduction oil, oil gas heat exchange
The temperature of flue gas is maintained at 350 DEG C in device, and thermally conductive oil tank is also provided in system, thermally conductive in system when system shutdown
Oily all put into thermally conductive oil tank stores.
Beneficial effect：
1. the present invention is by control heat conducting oil inlet temperature at 210 DEG C or more, the temperature for controlling gasification burning arbitrary intervals is high
In 350 DEG C, and there is certain nargin, it is entirely avoided tar has ensured oil gas heat exchange the problem of heating surface surface is precipitated
The operation reliably and with long-term of device, substantially increases the availability of biomass fluidized bed gasification furnace equipment, to biomass fluid bed gasification
The development of furnace technology is of great significance.
Oil gas heat exchanger is arranged in the present invention, for reducing the temperature of gasification burning, so that the outlet temperature of gasification burning exists
350 DEG C or more, conveying equipment type selecting is facilitated, realizes the conveying of high-temperature gasification combustion gas, while preventing the precipitation of gasification burning.
Oil water heat exchange device is arranged in the present invention, reduces for the temperature to conduction oil, and the thermally conductive oil temperature after reduction is high
In 210 DEG C, guarantee the inlet temperature of conduction oil, to realize recycling for conduction oil.
Store loop is arranged in the present invention, and when system shutdown, the conduction oil in system, which is all put into thermally conductive oil tank, to be stored up
It deposits, guarantees the safe operation of system.
The present invention uses conduction oil, because conduction oil still may be at liquid, the list of conduction oil at a higher temperature
It mutually exchanges heat, keeps the stability that heat-exchange system is simple, runs high.
Detailed description of the invention：
Attached drawing 1 is structural schematic diagram of the invention；
In figure：1, discharge pump；2, conduction oil expansion drum；3, heat conduction oil circulating pump；4, oil gas heat exchanger；5, oil water heat exchange device；6,
Water supply system；7, thermally conductive oil tank.
Specific embodiment：
Embodiment 1：
A kind of two circuit heat-exchange systems for biomass fluidized bed gasification furnace, composition include：Heat-exchanging loop and store loop,
The heat-exchanging loop includes oil gas heat exchanger 4 and oil water heat exchange device 5, the conduction oil outlet of the oil gas heat exchanger with it is described
Oil water heat exchange device heat conducting oil inlet connection, the heat conducting oil inlet of the oil gas heat exchanger and leading for conduction oil expansion drum 2
Hot oil outlet is connected by heat conduction oil circulating pump 3.
The entrance temperature control control in oil gas heat exchanger of conduction oil is at 210 DEG C or more, the outside wall surface temperature of oil gas heat exchanger
It is maintained at 350 DEG C or more；
In system operation, the temperature that conduction oil enters oil gas heat exchanger is 210-320 DEG C, and outlet oil temperature is 260-370 DEG C,
The flow of middle conduction oil is 100-500m3/h。
The inlet temperature of gasification burning is 800 DEG C, and outlet temperature is 450 DEG C, and the flow of gasification burning is 34500Nm3/h。
In system operation, conduction oil enters that the temperature of oil water heat exchange device is 260-370 DEG C, outlet oil temperature is 210-320
DEG C, the flow of conduction oil is 100 ~ 500m3/h；
The inlet water temperature of cooling water be 50 DEG C, exit water temperature I 150 DEG C（Water temperature is identical when working with oxygen-eliminating device）, flow 45t/
h。
Embodiment 2：
According to the two circuit heat-exchange systems described in embodiment 1 for biomass fluidized bed gasification furnace, the store loop packet
Thermally conductive oil tank 7 is included, the thermally conductive oil tank passes through with the oil gas heat exchanger and the conduction oil expansion drum respectively
Piping connection.
Embodiment 3：
Two circuit heat-exchange systems of biomass fluidized bed gasification furnace are used for according to embodiment 1 or 2, the conduction oil to be swollen
The heat conducting oil inlet and discharge pump 1 of swell pass through piping connection.
Embodiment 4：
Two circuit heat-exchange systems of biomass fluidized bed gasification furnace, the grease are used for according to embodiment 1 or 2 or 3
The conduction oil outlet of heat exchanger is connected to the entrance of the heat conduction oil circulating pump.
Embodiment 5：
Two circuit heat-exchange systems of biomass fluidized bed gasification furnace, the oil are used for according to embodiment 1 or 2 or 3 or 4
The cooling water inlet of water- to-water heat exchanger is connected to water supply system 6.
Embodiment 6：
A kind of heat-exchange method of the two circuit heat-exchange systems for biomass fluidized bed gasification furnace, this method comprises the following steps：
Conduction oil is introduced into conduction oil expansion drum by conduction oil by discharge pump, enters oil gas after boosting using heat conduction oil circulating pump
Heat exchanger, the temperature for entering the conduction oil of oil gas heat exchanger is 210 DEG C or more, and the high temperature heat conductive oil generated after heating exists
In oil water heat exchange device after cooling, returns in the oil supply pipe of Heat-transfer Oil Pump, recycling for conduction oil is realized, in oil gas heat exchanger
The temperature of flue gas is maintained at 350 DEG C, and thermally conductive oil tank is also provided in system, and when system shutdown, the conduction oil in system is complete
Portion puts into thermally conductive oil tank and stores, and is that still may be at liquid at a higher temperature because of conduction oil using conduction oil,
The single-phase heat exchange of conduction oil keeps the stability that heat-exchange system is simple, runs high.
Claims (6)
1. a kind of two circuit heat-exchange systems for biomass fluidized bed gasification furnace, composition include：It heat-exchanging loop and stores back
Road, it is characterized in that：The heat-exchanging loop includes oil gas heat exchanger and oil water heat exchange device, the conduction oil of the oil gas heat exchanger
Outlet is connected to the heat conducting oil inlet of the oil water heat exchange device, and the heat conducting oil inlet and conduction oil of the oil gas heat exchanger are swollen
The conduction oil outlet of swell is connected by heat conduction oil circulating pump.
2. the two circuit heat-exchange systems according to claim 1 for biomass fluidized bed gasification furnace, it is characterized in that：It is described
Store loop include thermally conductive oil tank, the thermally conductive oil tank respectively with the oil gas heat exchanger and the conduction oil
Expansion drum passes through piping connection.
3. the two circuit heat-exchange systems according to claim 1 or 2 for biomass fluidized bed gasification furnace, it is characterized in that：
The heat conducting oil inlet and discharge pump of the conduction oil expansion drum pass through piping connection.
4. the two circuit heat-exchange systems according to claim 1 or 2 or 3 for biomass fluidized bed gasification furnace, feature
It is：The conduction oil outlet of the oil water heat exchange device is connected to the entrance of the heat conduction oil circulating pump.
5. the two circuit heat-exchange systems according to claim 1 or 2 or 3 or 4 for biomass fluidized bed gasification furnace, special
Sign is：The cooling water inlet of the oil water heat exchange device is connected to water supply system.
6. the heat-exchange method described in a kind of claim 1-5 for two circuit heat-exchange systems of biomass fluidized bed gasification furnace,
It is characterized in that：This method comprises the following steps：Conduction oil is introduced into conduction oil expansion drum by conduction oil by discharge pump, using
Oil gas heat exchanger is entered after heat conduction oil circulating pump boosting, the temperature for entering the conduction oil of oil gas heat exchanger is 210 DEG C or more,
It after the high temperature heat conductive oil generated after heating is cooling in oil water heat exchange device, returns in the oil supply pipe of Heat-transfer Oil Pump, realizes
Conduction oil recycles, and the temperature of flue gas is maintained at 350 DEG C in oil gas heat exchanger, and thermally conductive oil tank is also provided in system,
When system shutdown, the conduction oil in system, which is all put into thermally conductive oil tank, to be stored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810802906.3A CN108827044A (en) | 2018-07-20 | 2018-07-20 | Two circuit heat-exchange systems and heat-exchange method for biomass fluidized bed gasification furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810802906.3A CN108827044A (en) | 2018-07-20 | 2018-07-20 | Two circuit heat-exchange systems and heat-exchange method for biomass fluidized bed gasification furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108827044A true CN108827044A (en) | 2018-11-16 |
Family
ID=64139830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810802906.3A Pending CN108827044A (en) | 2018-07-20 | 2018-07-20 | Two circuit heat-exchange systems and heat-exchange method for biomass fluidized bed gasification furnace |
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| CN (1) | CN108827044A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611238A (en) * | 2020-12-17 | 2021-04-06 | 哈尔滨锅炉厂有限责任公司 | Three-loop heat exchange system for biomass fluidized bed gasifier |
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| CN205774357U (en) * | 2016-06-21 | 2016-12-07 | 中国华电科工集团有限公司 | Biological fuel gas bootstrap system |
| CN107325847A (en) * | 2017-08-04 | 2017-11-07 | 浙江大学 | A kind of cooling of gas of high temperature pyrolysis and gasification containing tar and exhaust heat recovering method and device |
| CN208635619U (en) * | 2018-07-20 | 2019-03-22 | 哈尔滨锅炉厂有限责任公司 | The two circuit heat-exchange systems for biomass fluidized bed gasification furnace |
-
2018
- 2018-07-20 CN CN201810802906.3A patent/CN108827044A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243021A (en) * | 2010-05-10 | 2011-11-16 | 中国石油天然气股份有限公司 | Heat conducting oil smoke residual heat recovery method |
| CN203741285U (en) * | 2014-03-24 | 2014-07-30 | 国电长源湖北生物质气化科技有限公司 | Biomass hot fuel gas cooling system |
| CN105605776A (en) * | 2016-03-03 | 2016-05-25 | 杭州锅炉集团股份有限公司 | Heat transfer oil heat-exchanging energy-saving system |
| CN205774357U (en) * | 2016-06-21 | 2016-12-07 | 中国华电科工集团有限公司 | Biological fuel gas bootstrap system |
| CN107325847A (en) * | 2017-08-04 | 2017-11-07 | 浙江大学 | A kind of cooling of gas of high temperature pyrolysis and gasification containing tar and exhaust heat recovering method and device |
| CN208635619U (en) * | 2018-07-20 | 2019-03-22 | 哈尔滨锅炉厂有限责任公司 | The two circuit heat-exchange systems for biomass fluidized bed gasification furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611238A (en) * | 2020-12-17 | 2021-04-06 | 哈尔滨锅炉厂有限责任公司 | Three-loop heat exchange system for biomass fluidized bed gasifier |
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