CN202402164U - Independent gas dehumidifying and heating system with tail gas refrigeration function for gas circulation - Google Patents
Independent gas dehumidifying and heating system with tail gas refrigeration function for gas circulation Download PDFInfo
- Publication number
- CN202402164U CN202402164U CN2012200122895U CN201220012289U CN202402164U CN 202402164 U CN202402164 U CN 202402164U CN 2012200122895 U CN2012200122895 U CN 2012200122895U CN 201220012289 U CN201220012289 U CN 201220012289U CN 202402164 U CN202402164 U CN 202402164U
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- CN
- China
- Prior art keywords
- gas
- lithium bromide
- cooling
- preheater
- bromide refrigerator
- Prior art date
- 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.)
- Expired - Fee Related
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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
- 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
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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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
- 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
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Sorption Type Refrigeration Machines (AREA)
Abstract
The utility model relates to an independent gas dehumidifying and heating system with a tail gas refrigeration function for gas circulation. A flammable gas is introduced to a gas inlet of a mixture gas chamber through a gas cooling demister and a gas preheater; air enters an air inlet of the mixed gas chamber, mixed gas from the mixed gas chamber is fed to a low-calorific-value gas generator set, and flue gas exhausted from the low-calorific-value generator set is introduced to a heating medium inlet of a lithium bromide refrigerator; a chilled water outlet of the lithium bromide refrigerator is connected with a water inlet of a cooler of the gas cooling demister, and a water outlet of the cooler of the gas cooling demister is connected with a chilled water inlet of the lithium bromide refrigerator; and a cooled water outlet of the lithium bromide refrigerator is connected with a water inlet of the preheater, the water outlet of the preheater is connected with a water feeding pipe of a cooling tower, and a water outlet pipe of the cooling tower is connected with a cooled water inlet of the lithium bromide refrigerator. The independent gas dehumidifying and heating system with the tail gas refrigeration function for gas circulation has the capabilities of improving the combustion efficiency and output, reducing loss rate of exhausted flue gas, utilizing waste heat of the flue gas and improving the reliability of the system.
Description
Technical field
The utility model relates to a kind of fuel gas with low heat value generator set, particularly a kind of combustion gas recycled offgas refrigeration combustion gas independent humidity control heating system.
Background technique
The fuel gas with low heat value generator set is to adapt to the new-generation unit that environmental requirement is developed with the new environment in market, is fuel with gas, biogas etc. usually, turns waste into wealth, and exhaust emission is low, is the new green environment protection power of replacement fuel oil, coal-fired unit.
During the work of fuel gas with low heat value generator set, comprise air inlet, compression, burning expansion and exhaust process successively, combustible gas is after gas filter filters, successively through flame trap, solenoid valve, pressure regulator valve, from the fuel gas inlet entering mixed air cavity of mixed air cavity; Natural air filters the air inlet entering mixed air cavity of back from mixed air cavity through air filter; The mixed gas that comes out from mixed air cavity gets into the fuel gas with low heat value generator set after the pressurized machine supercharging; Fuel gas with low heat value generator set discharged flue gas gets into exhaust manifold, and the outlet of exhaust manifold is equipped with silencing apparatus.
It is unstable also must to contain a large amount of moisture and concentration the gas of standing out from extraction, the biogas; When the relative moisture of combustion gas reaches 100%; Moisture in the combustion gas reaches capacity; The fuel gas temperature of this moment is called dew point temperature, and when fuel gas temperature dropped to dew point temperature, the water vapour in the combustion gas will condense into dew.The mixed gas humidity that humidify fuel gas and wet air mix is very big, and the mixed gas that contains large quantity of moisture gets in the generator set, will cause barrel wear, the ignition difficulties of unit; The reliability decrease that causes unit; It is not enough to exert oneself, and utilization efficiency is low, and has increased the care and maintenance cost of equipment.
In the cylinder body of fuel gas with low heat value generator set, combustible gas and the acting of a certain proportion of air mixing burning expansion, in combustion process, the water vapour that contains in the combustion gas is not participated in burning, and but will absorb heat becomes the high-temperature flue gas discharging, has wasted a large amount of heat energy; In addition, because the existence of water vapour need be sent into the needs of more combustion gas to satisfy burning and to exert oneself, more increased heat loss due to exhaust gas.
According to the second law of thermodynamics, heat can not spontaneously be transferred to high temp objects from cryogenic object, realize this process, must consume certain merit, just can make the temperature of cryogenic object lower, reaches the purpose of refrigeration.Lithium-bromide absorption-type refrigerating machine be a kind of be the refrigerator of power with the thermal source, mainly form by generator, condenser, vaporizer, adsorber four major parts and equipment such as heat exchanger and solution pump.Lithium bromide refrigerator inside is vacuum environment; For example the shell side of vaporizer maintenance absolute pressure is 6.54mmHg; Water is 5 ℃ of boilings, and the cryogen water spirt is gone will explosive evaporation, when the tube side of the higher chilled water of temperature (for example the being 12 ℃) vaporizer of flowing through; The cryogen water that sprays so outside copper pipe will and evaporate from copper pipe absorption heat, and the chilled water temperature in the copper pipe has just reduced (12 ℃ → 7 ℃); After the cryogen water evaporation; The pressure of vaporizer will raise, and in order to keep the pressure very low (6.54mmHg) in the vaporizer, adsorber absorbs water vapour through the spray bromize lithium concentrated solution; Lithium-bromide solution behind the absorption water vapour becomes dilute solution, and concentration reduces can not absorb water vapour again; Through generator dilute solution is concentrated again, in generator, feeds thermal medium, dilute solution is carried out indirect heating, make the water evaporation in the dilute solution after solution concentrated, keep absorptivity; The isolated water vapour of generator is cooled off by cooling water in condenser indirectly, and the cryogen water of liquefy gets into the vaporizer spray again, so moves in endless cycles.Therefore the external pipeline of lithium bromide refrigerator has chilled water import, chilled water outlet; Cooling water intake, coolant outlet; Heating agent import, heating agent outlet.
The model utility content
The purpose of the utility model is; Overcome the problem that exists in the existing technology, a kind of combustion gas recycled offgas refrigeration combustion gas independent humidity control heating system is provided, can improve the combustion efficiency of fuel gas with low heat value generator set; Reduction is from power consumption; Reduce heat loss due to exhaust gas, simultaneously discharged flue gas is carried out UTILIZATION OF VESIDUAL HEAT IN, improve the reliability and the efficient of whole system.
For solving above technical problem; A kind of combustion gas recycled offgas refrigeration combustion gas independent humidity control heating system that the utility model provided; Mixed air cavity is provided with fuel gas inlet and air inlet; Air gets into the air inlet of said mixed air cavity, and the mixed gas of said mixed air cavity gets into the fuel gas with low heat value generator set, and said fuel gas with low heat value generator set institute smoke exhaust gets into exhaust manifold; Also comprise combustion gas cooling demister, gas preheater, lithium bromide refrigerator and cooling tower; Combustible gas gets into the air intake of said combustion gas cooling demister, and the preparatory device suction port of combustion of said gas preheater is inserted in the air outlet of said combustion gas cooling demister, and the fuel gas inlet of said mixed air cavity is inserted in the preparatory device of the combustion of said gas preheater air outlet; The outlet of said fuel gas with low heat value generator set exhaust manifold inserts the heating agent import of said lithium bromide refrigerator; The chilled water outlet of said lithium bromide refrigerator is connected with the cooler water intake of said combustion gas cooling demister, and the cooler water outlet of said combustion gas cooling demister is connected with the chilled water import of said lithium bromide refrigerator; The coolant outlet of said lithium bromide refrigerator is connected with the preheater water intake of said gas preheater; The preheater water outlet of said gas preheater is connected with the cooling tower water inlet of said cooling tower, and the cooling tower outlet pipe of said cooling tower is connected with the cooling water intake of said lithium bromide refrigerator.
With respect to existing technology, the utility model has been obtained following beneficial effect: (1) utilizes fuel gas with low heat value generator set discharged flue gas to drive lithium bromide refrigerator and produces chilled water, has effectively utilized the waste heat of fuel gas with low heat value generator set institute smoke exhaust.(2) combustion gas cooling demister is united two into one by surface cooler, demister and forms; Cryogenic freezing water gets into surface cooler; Carry out indirect heat exchange with the combustion gas of the surface cooler of flowing through, the temperature of combustion gas is cooled to below the dew point temperature, the steam coagulation in the combustion gas becomes the globule; And along surface cool wall inflow rhone; The remaining water smoke that the combustion gas quenching produces is then caught by demister and is also got into rhone, and the cooled dried gas concentration that dehumidifies is improved, and gets into gas preheater heating back again and gets into mixed air cavity.(3) water vapour is not only participated in burning, and also will absorb heat becomes the high-temperature flue gas discharging, and combustion gas is discharged into the vapor in the atmosphere amount with high-temperature flue gas and descends through after drying, and heat loss due to exhaust gas significantly descends.(4) humidify fuel gas becomes dried combustion gas after removing moisture, and concentration improves and is more stable, and it is higher to exert oneself; Corrosion can not take place in the passage of flowing through after drying; Light a fire more easily after getting into the fuel gas with low heat value generator set, cylinder body also is not easy corrosion, and the care and maintenance cost is low.(5) in the lithium bromide refrigerator; The caloric requirement that the heat that flue gas discharged of fuel gas with low heat value generator set and chilled water cooling are discharged is taken away by cooling water; For cooling water can be recycled; Must use cooling tower that the cooling water after heating up is lowered the temperature, the cooling water after the cooling gets in the lithium bromide refrigerator again, and the heat that cooling water is taken away is relevant with the flow of cooling water and the temperature difference; The high-temperature cooling water that the utility model will come out from lithium bromide refrigerator is at first delivered to gas preheater, and in gas preheater, indirect heat exchange is carried out in high-temperature cooling water and cold combustion gas; The temperature of cold combustion gas is able to promote, and temperature descends after the high-temperature cooling water release heat, gets into the cooling tower cooling again; Cooling water after the cooling tower cooling flows out from the cooling tower outlet pipe; Again get into the cooling water intake of lithium bromide refrigerator, gas preheater reaches the waste heat that had both reclaimed high-temperature cooling water, and cold fuel gas temperature is got a promotion; Alleviated the load of cooling tower again; Strengthen the cooling water outlet and inlet temperature difference of lithium bromide refrigerator, reduced the power consumption of blower fan of cooling tower, can alleviate the power consumption of cooling water circulating pump again.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation, accompanying drawing only provides reference and explanation usefulness, and is non-in order to restriction the utility model.
Fig. 1 is the schematic representation of the utility model combustion gas recycled offgas refrigeration combustion gas independent humidity control heating system.
Among the figure: 1 natural air; 2 air filters; 3 combustion gas cooling demister; 3a cooler water intake; 3a ' cooler water outlet; The 3b rhone; 4 gas preheaters; 4a fires preparatory device suction port; The preparatory device of 4a ' combustion air outlet; 4b preheater water intake; 4b ' preheater water outlet; 5 lithium bromide refrigerators; The import of 5a chilled water; 5a ' chilled water outlet; The 5b cooling water intake; 5b ' coolant outlet; The import of 5c heating agent; The outlet of 5c ' heating agent; 6 cooling towers; 6a cooling tower water inlet; 6a ' cooling tower outlet pipe.
Embodiment
As shown in Figure 1, the utility model combustion gas recycled offgas refrigeration combustion gas independent humidity control heating system comprises the fuel gas with low heat value generator set; Combustible gas is after gas filter filters; Get into combustion gas cooling demister 3 through flame trap, get into the preparatory device suction port of the combustion 4a of gas preheater 4 again from combustion gas cooling demister 3, flow out from the preparatory device of the combustion of charge heating 4 air outlet 4a ' then; Through solenoid valve, pressure regulator valve, from the fuel gas inlet entering mixed air cavity of mixed air cavity.After natural air 1 filters through air filter 2; Get into mixed air cavity from the air inlet of mixed air cavity; The air intake of pressurized machine is inserted in the air outlet of mixed air cavity; Mixed gas gets into the fuel gas with low heat value generator set after the pressurized machine supercharging, fuel gas with low heat value generator set discharged flue gas gets into exhaust manifold, and the outlet of exhaust manifold is equipped with silencing apparatus.
Lithium bromide refrigerator is selected flue gas type lithium bromide refrigerator for use, and the outlet of fuel gas with low heat value generator set exhaust manifold silencing apparatus inserts the heating agent import 5c of lithium bromide refrigerator 5, and the tail gas after the release heat exports 5c ' from heating agent and discharges.The chilled water outlet 5a ' of lithium bromide refrigerator 5 is connected with the cooler water intake 3a of combustion gas cooling demister 3, and the cooler water outlet 3a ' of combustion gas cooling demister 3 is connected with the chilled water import 5a of lithium bromide refrigerator 5.
The coolant outlet 5b ' of lithium bromide refrigerator 5 is connected with the preheater water intake 4b of gas preheater 4; The preheater water outlet 4b ' of gas preheater 4 is connected with the cooling tower water inlet 6a of cooling tower 6, and the cooling tower outlet pipe 6a ' of cooling tower 6 is connected with the cooling water intake 5b of lithium bromide refrigerator 5.
Combustion gas cooling demister 3 is united two into one by surface cooler, demister and forms; Cryogenic freezing water gets into surface cooler; Carry out indirect heat exchange with the combustion gas of the surface cooler of flowing through, the temperature of combustion gas is cooled to below the dew point temperature, the steam coagulation in the combustion gas becomes the globule; And along surface cool wall inflow rhone 3b; The remaining water smoke that the combustion gas quenching produces is then caught by demister and is got into rhone 3b, and the concentration of the cooled dried combustion gas that dehumidifies is improved, and gets into gas preheater 4 from firing preparatory device suction port 4a again; Utilize high-temperature cooling water that indirect heating is carried out in cold combustion gas, the dried combustion gas after the heating is discharged after the fuel gas inlet of solenoid valve, pressure regulator valve entering mixed air cavity from firing preparatory device air outlet 4a '.
More than be merely the preferable possible embodiments of the utility model, non-so the limitation the utility model scope of patent protection.Except that the foregoing description, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (1)
1. combustion gas recycled offgas refrigeration combustion gas independent humidity control heating system; Mixed air cavity is provided with fuel gas inlet and air inlet; Air gets into the air inlet of said mixed air cavity; The mixed gas of said mixed air cavity gets into the fuel gas with low heat value generator set; Said fuel gas with low heat value generator set institute smoke exhaust gets into exhaust manifold, it is characterized in that: also comprise combustion gas cooling demister, gas preheater, lithium bromide refrigerator and cooling tower, combustible gas gets into the air intake of said combustion gas cooling demister; The preparatory device suction port of combustion of said gas preheater is inserted in the air outlet of said combustion gas cooling demister, and the fuel gas inlet of said mixed air cavity is inserted in the preparatory device of the combustion of said gas preheater air outlet; The outlet of said fuel gas with low heat value generator set exhaust manifold inserts the heating agent import of said lithium bromide refrigerator; The chilled water outlet of said lithium bromide refrigerator is connected with the cooler water intake of said combustion gas cooling demister, and the cooler water outlet of said combustion gas cooling demister is connected with the chilled water import of said lithium bromide refrigerator; The coolant outlet of said lithium bromide refrigerator is connected with the preheater water intake of said gas preheater; The preheater water outlet of said gas preheater is connected with the cooling tower water inlet of said cooling tower, and the cooling tower outlet pipe of said cooling tower is connected with the cooling water intake of said lithium bromide refrigerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200122895U CN202402164U (en) | 2012-01-12 | 2012-01-12 | Independent gas dehumidifying and heating system with tail gas refrigeration function for gas circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200122895U CN202402164U (en) | 2012-01-12 | 2012-01-12 | Independent gas dehumidifying and heating system with tail gas refrigeration function for gas circulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202402164U true CN202402164U (en) | 2012-08-29 |
Family
ID=46699815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200122895U Expired - Fee Related CN202402164U (en) | 2012-01-12 | 2012-01-12 | Independent gas dehumidifying and heating system with tail gas refrigeration function for gas circulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202402164U (en) |
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2012
- 2012-01-12 CN CN2012200122895U patent/CN202402164U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20160112 |