CN202109656U - Natural gas and smoke condensation type waste heat utilization device - Google Patents
Natural gas and smoke condensation type waste heat utilization device Download PDFInfo
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- CN202109656U CN202109656U CN2011201028044U CN201120102804U CN202109656U CN 202109656 U CN202109656 U CN 202109656U CN 2011201028044 U CN2011201028044 U CN 2011201028044U CN 201120102804 U CN201120102804 U CN 201120102804U CN 202109656 U CN202109656 U CN 202109656U
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- heat exchanger
- flue 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
- 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]
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Abstract
The utility model discloses a natural gas and smoke condensation type waste heat utilization device which belongs to the thermotechnical field, and comprises a smoke-water plate pattern efficient heat exchanger, a spraying tower, a water-water plate heat exchanger, a spraying water pipe, a spraying water pump, a water feed pump, a water feed pipe and a dirt separator, wherein a spraying water tank is arranged at the bottom of the spraying tower. The temperature of smoke is reduced to be below the dew-point temperature in the way that a direct heat exchange mode and an indirect heat exchange mode of air and water are combined, smoke sensible heat and steam sensible heat in the smoke are released, the heated water temperature is promoted for twice, the fuel energy utilization ratio can be improved by 8%-13%, and the content of the smoke dust and NOx pollutant in the smoke can be effectively reduced. The natural gas and smoke condensation type waste heat utilization device can be widely applied to energy conservation improvement of large and medium sized gas devices.
Description
Affiliated technical field
The utility model relates to a kind of natural gas fume afterheat use device, carries out the utilization of the condensing degree of depth to fume waste heat behind the combustion of natural gas, and energy-saving effect is obvious, and is energy-conservation outstanding with environmental benefit, belongs to the thermal technology field.
Background technology
Along with social development and human progress, the energy demand cumulative year after year closely bound up, the energy crisis that becomes increasingly conspicuous in recent years and use environmental pollution and the greenhouse effects that fossil fuel causes in a large number and more and more receive people's attention with human survival.The clean and effective utilization of fossil fuel is the important topic that realizes target for energy-saving and emission-reduction.Along with the adjustment of China's energy resource structure, the fossil energy proportion of coal class reduces gradually, and natural gas fossil energy proportion rises gradually; Under energy condition in short supply day by day; How efficiently utilizing limited natural gas resource, alleviate the pollution to environment, is the key point of future source of energy utilization technology.
Natural gas is as one of universally acknowledged clean energy resource, and main component is CH
4, from its chemical molecular formula, can know the natural gas that every burning is 1 cubic metre; Can produce about 2 cubic metres steam; And containing a large amount of latent heats of vaporization in the steam, as it effectively not being recycled, the heat that occupies natural gas higher calorific value 10% has just wasted.
Exhaust gas temperatures such as conventional gas Thermal Equipment such as boiler, direct combustion machine are about 130～260 ℃; Exhaust gas temperatures even higher such as gas turbine for improving system effectiveness, reduce fuel consumption; Most of Thermal Equipment flue afterbody basically all is equipped with indirect type heat exchangers such as waste heat boiler, economizer, air preheater; Be used for heating system feedwater or preheated burning required air, receive this body structure of heat exchanger and materials limitations, its exit gas temperature generally all is higher than dew-point temperature; Contained humidity enters in the atmosphere with gaseous form in the flue gas; The energy that can't effectively utilize steam to contain makes that the energy-saving effect of heat exchanger is limited, can't effectively remove flue dust in the flue gas, NO simultaneously
xDeng pollutant, effects of energy saving and emission reduction is outstanding inadequately.
Summary of the invention
Deficiency to existing natural gas residual heat using device existence; The utility model provides a kind of residual heat using device of recycling obvious heat of smoke and steam latent heat in the natural gas flue gas, through increase this device at Thermal Equipment chimney place, can reduce to flue-gas temperature below the dew-point temperature; Effectively reclaim sensible heat and steam latent heat in the flue gas; Fractional energy savings reaches 8～13%, effectively removes flue dust in the flue gas simultaneously, reduces NO
xDeng pollutant discharge amount, realize energy-saving and emission-reduction.
The utility model solve its technical problem institute just the technical scheme of employing be: natural gas flue gas condensing formula residual heat using device is made up of cigarette-water plate line formula high-performance heat exchanger, spray column, water-water plate type heat exchanger, spray header, spray water pump, feed pump, feed pipe, dirt separator; Cigarette-water plate line formula high-performance heat exchanger exhanst gas outlet links to each other with the spray column gas approach; Water-water plate type heat exchanger hot junction outlet links to each other with the control valve on spray column top through spray header, and the hot junction water inlet is linked to each other with the spray water outlet of water tank of spray column bottom with dirt separator through the spray water pump by spray header successively; The cold side inlet of water-water plate type heat exchanger links to each other with feed pump, and the cold junction delivery port links to each other with cigarette-water plate line formula high-performance heat exchanger water inlet through feed pipe.Said natural gas flue gas condensing formula residual heat using device spray column bottom is provided with the spray water tank.
Corrode for preventing that flue gas acid from revealing, the cigarette of said natural gas flue gas condensing formula residual heat using device-water plate line formula high-performance heat exchanger is the corrosion-resistant stainless steel material; For realizing flue gas heat release in the spray column, said natural gas flue gas condensing formula residual heat using device spray column top is provided with spray header and nozzle; For guaranteeing flue gas thermal discharge in the spray column, said natural gas flue gas condensing formula residual heat using device spray column top spray header and nozzle are that single or multiple lift is arranged; For guaranteeing water spray in the spray column, the spray header on the said natural gas flue gas condensing formula residual heat using device spray column is provided with control valve; For preventing spray column discharging flue gas with water, smoke outlet is equipped with demister in the said natural gas flue gas condensing formula residual heat using device spray column spray column; Constant for guaranteeing the spray quantity of water in water tank, said natural gas flue gas condensing formula residual heat using device spray water tank is provided with U type overflow pipe.
Discharge obvious heat of smoke when flue gas is flowed through cigarette-water plate line formula high-performance heat exchanger, be used for the low-temperature water heating heating, the flue gas after the cooling directly sprays with shower water in spray column; Reduce to flue-gas temperature below the dew-point temperature, make the water vapor condensation in the flue gas, emit the latent heat of vaporization; The heating shower water; Shower water passes to the steam latent heat that absorbs through water-water plate type heat exchanger and is heated water, and lifting is heated coolant-temperature gage makes it become low-temperature water heating, and shower water self temperature reduces simultaneously.Water in the spray water tank constitutes closed circulation through filter, spray water pump, water-water plate type heat exchanger hot junction import and export and spray header, control valve, nozzle; In spray column, absorb the water vapor condensation latent heat of vaporization in the flue gas; Heat release in water-water plate type heat exchanger; Like this reciprocation cycle reaches the purpose of flue gas condensing heat recovery.The spray water tank of spray column bottom is provided with U type overflow pipe; When the liquid level in the spray water tank is lower than U type overflow pipe, rely on sealing in the both sides water column discrepancy in elevation assurance spray column in the U type overflow pipe, when liquid level is higher than U type overflow pipe; Automatic overflow goes out to spray water tank, guarantees normal liquid level in the water tank.Flue gas after shower water directly sprays, the flue dust that contains in the flue gas, NO
xDeng pollutant by the shower water absorption cleaning after, the flue dust in the flue gas, NO
xSignificantly reduce Deng pollutant load, realize the cleaning discharging.
The beneficial effect of the utility model is: successively utilize the less water of the temperature difference-water heat exchange and the bigger air water heat exchange mode of the temperature difference; Carry out temperature increase twice to being heated water, can carry to higher, enlarge the hot water purposes being heated coolant-temperature gage; Realize the step exchange of energy; Effectively improve the fuel energy utilization ratio, fractional energy savings can reach 8-13%, effectively reduces flue dust, NO in the discharging flue gas simultaneously
xDeng pollutant load, realize energy-saving and emission-reduction.This device is installed in outdoor chimney position, does not take space in the equipment room, carries out the transformation of flue gas condensing formula UTILIZATION OF VESIDUAL HEAT IN for existing Thermal Equipment and has created good condition.
Description of drawings
Fig. 1 is the utility model patent schematic diagram
Fig. 2 is the utility model patent working figure.
Among Fig. 11, cigarette-water plate line formula high-performance heat exchanger, 2, spray column, 3, the spray column access hole, 4 demisters; 5, nozzle, 6, control valve, 7, the spray water tank, 8, spray header; 9, water-water plate type heat exchanger, 10, feed pump, 11, feed pipe, 12, the spray water pump; 13, dirt separator, 14, spray water tank blow-off pipe, 15, U type overflow pipe.
Among Fig. 2 16, flue, 17, the combustion gas Thermal Equipment, 18, chimney.
The specific embodiment
In Fig. 2; Combustion gas Thermal Equipment 17 exhanst gas outlets link to each other with cigarette-water plate line formula high-performance heat exchanger 1 gas approach through flue 16; Cigarette-water plate line formula high-performance heat exchanger 1 exhanst gas outlet links to each other with spray column 2 gas approach, and spray column 2 exhanst gas outlets directly link to each other with chimney 18.
The flue gas of discharging from Thermal Equipment 17 gets into natural gas flue gas condensing formula residual heat using device behind flue 16, flue gas at first carries out indirect heat exchange with low-temperature water heating in cigarette-water plate line formula high-performance heat exchanger 1, and flue gas is emitted sensible heat, and temperature is reduced to dew-point temperature; Flue gas gets in the spray column 2 under the stack draught effect, and flue gas is motion from bottom to top in spray column 2; Carry out adverse current direct heat transfer with the spray header 8 through top in the spray column 2 with the drop that nozzle 5 sprays downwards, flue-gas temperature is reduced to below the dew-point temperature, the water vapor condensation in the flue gas; Emit the latent heat of vaporization; Gradually by the liberated heat heating of flue gas institute, temperature raises shower water, accomplishes the air water direct heat transfer in the decline process; The flue gas that heat exchange finishes is after demister 4 carries out the carbonated drink separation, and flue gas gets into chimney 18, finally enters atmosphere.Water in the spray water tank 7, because of water vapor condensation in the flue gas, the water yield increases gradually, and when the water yield exceeds U type overflow pipe 15 entrance location, and U type overflow pipe 15 inlet pressure are when identical with external atmosphere pressure, and unnecessary water is with fixed attention discharged automatically; Under chimney 18 draft effects; In the spray column 2 is little negative pressure; When the liquid level of spray in the water tank 7 is lower than U type overflow pipe 15 entrance location, rely on the water column pressure reduction of the interior both sides of U type overflow pipe 15 bend pipes, in the cold air that prevents chimney 18 outsides bleeds spray column 2 from U type overflow pipe 15; Reduce flue-gas temperature in the spray column 2, reduce the flue gas condensing thermal discharge.
In flue gas and the direct heat transfer process of shower water adverse current, flue dust, NO in the shower water absorption flue gas
xDeng pollutant, flue gas is played catharsis, reduce pollutant load in the discharged gas fume, play the effect of protection environment.Fall into flue dust, NO in the spray water tank 7 with shower water
xIn spray water tank 7 bottoms, spray water tank 7 bottoms are provided with blow-off pipe 14, regularly discharge the impurity in the spray water tank 7, guarantee spray water quality etc. contaminants.
Be heated water and get into water-water plate type heat exchanger 9 cold junction water inlets through feed pump 10; Temperature raises after water-water plate type heat exchanger 9 and shower water heat exchange; Become low-temperature water heating, get into again in cigarette-water plate line formula high-performance heat exchanger 1, carry out the air water heat exchange; Become high-temperature-hot-water, finally deliver to the hot water demand place.
Claims (7)
1. natural gas flue gas condensing formula residual heat using device is made up of cigarette-water plate line formula high-performance heat exchanger (1), spray column (2), water-water plate type heat exchanger (9), spray header (8), spray water pump (12), feed pump (10), feed pipe (11), dirt separator (13), and cigarette-water plate line formula high-performance heat exchanger (1) exhanst gas outlet links to each other with spray column (2) gas approach; Water-water plate type heat exchanger (9) hot junction outlet links to each other with the control valve (6) on spray column (2) top through spray header (8), and the hot junction water inlet is linked to each other with spray water tank (7) delivery port of spray column (2) bottom with dirt separator (13) through spray water pump (12) by spray header (8) successively; The cold side inlet of water-water plate type heat exchanger (9) links to each other with feed pump (10), and the cold junction delivery port links to each other with cigarette-water plate line formula high-performance heat exchanger (1) water inlet through feed pipe (11); It is characterized in that: spray column (2) bottom is provided with spray water tank (7).
2. natural gas flue gas condensing formula residual heat using device according to claim 1 is characterized in that: cigarette-water plate line formula high-performance heat exchanger (1) is corrosion resistant stainless steel.
3. natural gas flue gas condensing formula residual heat using device according to claim 1 is characterized in that: spray column (2) top is provided with spray header (8) and nozzle (5).
4. natural gas flue gas condensing formula residual heat using device according to claim 3 is characterized in that: the spray header (8) on spray column (2) top and nozzle (5) are arranged for single or multiple lift.
5. natural gas flue gas condensing formula residual heat using device according to claim 3 is characterized in that: the spray header (8) on the spray column (2) is provided with control valve (6).
6. natural gas flue gas condensing formula residual heat using device according to claim 1 is characterized in that: the interior smoke outlet of spray column (2) is equipped with demister (4).
7. natural gas flue gas condensing formula residual heat using device according to claim 1 is characterized in that: spray water tank (7) is provided with U type overflow pipe (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201028044U CN202109656U (en) | 2011-04-06 | 2011-04-06 | Natural gas and smoke condensation type waste heat utilization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201028044U CN202109656U (en) | 2011-04-06 | 2011-04-06 | Natural gas and smoke condensation type waste heat utilization device |
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| Publication Number | Publication Date |
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| CN202109656U true CN202109656U (en) | 2012-01-11 |
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| CN2011201028044U Expired - Fee Related CN202109656U (en) | 2011-04-06 | 2011-04-06 | Natural gas and smoke condensation type waste heat utilization device |
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| CN (1) | CN202109656U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900403A (en) * | 2014-04-18 | 2014-07-02 | 吉首大学 | Waste gas processing and heat efficient recycling device |
| CN104807345A (en) * | 2014-01-28 | 2015-07-29 | 北京华晟环能科技有限公司 | Cooling tower contact gas condenser for waste heat generating apparatus |
| CN105202932A (en) * | 2014-06-27 | 2015-12-30 | 沈阳铝镁设计研究院有限公司 | Method and device for flue gas waste heat utilization of aluminum oxide roasting furnace |
| CN106595328A (en) * | 2017-01-13 | 2017-04-26 | 秦皇岛信能能源设备有限公司 | Heat energy transmission device combining exhaust gas and water of melting furnace |
| CN106765043A (en) * | 2016-12-28 | 2017-05-31 | 中国科学院工程热物理研究所 | A kind of gas fired-boiler Latent heat recycling system |
| CN107327863A (en) * | 2017-06-06 | 2017-11-07 | 李宜立 | Suitable for the flue gas purification system and flue gas purifying method of gas turbine |
| CN107559864A (en) * | 2016-06-30 | 2018-01-09 | 保定市金能换热设备有限公司 | A kind of combustion gas method for effectively improving combustion gas furnace thermal efficiency |
| CN108195216A (en) * | 2018-02-24 | 2018-06-22 | 李宜立 | Steam and residual heat using device and its technique in flue gas |
| CN112742147A (en) * | 2020-12-14 | 2021-05-04 | 湖南福千府生物科技有限公司 | Burner gas purification and dust removal device for sodium sulfite preparation |
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2011
- 2011-04-06 CN CN2011201028044U patent/CN202109656U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807345A (en) * | 2014-01-28 | 2015-07-29 | 北京华晟环能科技有限公司 | Cooling tower contact gas condenser for waste heat generating apparatus |
| CN103900403A (en) * | 2014-04-18 | 2014-07-02 | 吉首大学 | Waste gas processing and heat efficient recycling device |
| CN103900403B (en) * | 2014-04-18 | 2016-03-30 | 吉首大学 | A kind of exhaust-gas treatment and heat high efficiente callback device |
| CN105202932A (en) * | 2014-06-27 | 2015-12-30 | 沈阳铝镁设计研究院有限公司 | Method and device for flue gas waste heat utilization of aluminum oxide roasting furnace |
| CN107559875A (en) * | 2016-06-30 | 2018-01-09 | 保定市金能换热设备有限公司 | A kind of combustion gas method for effectively reducing gas furnace discharged nitrous oxides |
| CN107559864A (en) * | 2016-06-30 | 2018-01-09 | 保定市金能换热设备有限公司 | A kind of combustion gas method for effectively improving combustion gas furnace thermal efficiency |
| CN107559873A (en) * | 2016-06-30 | 2018-01-09 | 保定市金能换热设备有限公司 | A kind of ultralow discharged nitrous oxides superelevation thermal efficiency gas furnace system |
| CN107559875B (en) * | 2016-06-30 | 2019-05-03 | 保定市金能换热设备有限公司 | A kind of combustion gas method that gas furnace discharged nitrous oxides are effectively reduced |
| CN107559864B (en) * | 2016-06-30 | 2019-05-03 | 保定市金能换热设备有限公司 | A kind of combustion gas method effectively improving combustion gas furnace thermal efficiency |
| CN106765043A (en) * | 2016-12-28 | 2017-05-31 | 中国科学院工程热物理研究所 | A kind of gas fired-boiler Latent heat recycling system |
| CN106595328A (en) * | 2017-01-13 | 2017-04-26 | 秦皇岛信能能源设备有限公司 | Heat energy transmission device combining exhaust gas and water of melting furnace |
| CN106595328B (en) * | 2017-01-13 | 2019-10-22 | 秦皇岛信能能源设备有限公司 | A kind of thermal energy transfer device of waste gas of melting furnace in conjunction with water |
| CN107327863A (en) * | 2017-06-06 | 2017-11-07 | 李宜立 | Suitable for the flue gas purification system and flue gas purifying method of gas turbine |
| CN108195216A (en) * | 2018-02-24 | 2018-06-22 | 李宜立 | Steam and residual heat using device and its technique in flue gas |
| CN112742147A (en) * | 2020-12-14 | 2021-05-04 | 湖南福千府生物科技有限公司 | Burner gas purification and dust removal device for sodium sulfite preparation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DALIAN FENGZE ENERGY-SAVING ENVIRONMENTAL PROTECTI Effective date: 20120820 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 116011 DALIAN, LIAONING PROVINCE TO: 116023 DALIAN, LIAONING PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120820 Address after: 116023, No. 3, No. 306-1, block A, Torch Road, 1 hi tech Industrial Park, Liaoning, Dalian Patentee after: DALIAN FENGZE ENERGY-SAVING ENVIRONMENTAL ENGINEERING TECHNOLOGY CO., LTD. Address before: 116011 Room 608, new apartment 339-7, Changchun Road, Xigang District, Liaoning, Dalian Patentee before: Liu Changzheng Patentee before: Sun Zhigang |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20130406 |