CN2903811Y - High temp reheater for fire tube group of Br cooler - Google Patents

High temp reheater for fire tube group of Br cooler Download PDF

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Publication number
CN2903811Y
CN2903811Y CNU2006200904238U CN200620090423U CN2903811Y CN 2903811 Y CN2903811 Y CN 2903811Y CN U2006200904238 U CNU2006200904238 U CN U2006200904238U CN 200620090423 U CN200620090423 U CN 200620090423U CN 2903811 Y CN2903811 Y CN 2903811Y
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China
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section
heat exchanger
burner
high temperature
light pipe
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Expired - Lifetime
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CNU2006200904238U
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Chinese (zh)
Inventor
邓洋波
张红岩
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Dalian Maritime University
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Dalian Maritime University
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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
    • 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

Abstract

A high temperature reheater for fire tube groups of a bromine refrigerator belongs to the direct-fired lithium brominate absorption refrigeration field. The lithium brominate direct-fired absorption refrigerator employs the flat-flame of a porous ceramics burner and directly heats the tube bundles arranged in the furnace, thereby not only enhancing the heat transmission efficiency of the high temperature reheater body, but also the arrangement of the water pipes can reduce the content of NO x, and CO, that is to employ the fire tube groups high temperature reheater. As for the fire tube groups high temperature lithium brominate absorption direct-fired machine, the COP can reach up to about 1.5, compared with the prior lithium brominate direct fired absorption refrigerator, half of the volume is reduced, the content of the burning discharge NO x is lower than 30 ppm and CO content is also reduced to a lower level, thereby especially being applicable to various large, medium, and small size buildings and the central air conditioner system of building groups.

Description

Bromine cooling machine fire tube group high temperature reheater
Technical field
The utility model belongs to the direct-burning type lithium bromide absorption type refrigerating field.
Background technology
The direct-burning type lithium bromide absorption type refrigeration machine directly with combustion gas as the energy; have protection environment, balance combustion gas peak valley, improve electric load rate and the high advantage of efficiency of energy utilization; all obtained development faster in recent years at home and abroad, and be widely used in all kinds of large, medium and small type buildings and the groups of building central air conditioner system.Along with natural gas the popularizing of each department, lithium bromide direct fired absorption refrigeration machine will have the better application prospect.Yet, commercial building for an inch of land is an inch of gold, the bromine cooling machine user always wishes satisfying under the condition of other performance, volume and weight is the smaller the better, to reduce the area and the construction cost of machine room, wish that particularly the air-conditioning unit can be installed in the top layer of building, basement or intermediate layer, this just has higher requirement to the compactedness of unit.Therefore, development direct combustion machine new and effective, compact conformation has very high commercial value and realistic meaning.One of main path of developing efficient ultra-compact direct-fired absorption cold warm water machine group is exactly the high-temp regenerator compact conformationization, to its combustion system and height again stove tube inner conduit group arrange and improve.If adopt the burning of porous ceramic combustor flat flame, directly heating is arranged in the tube bank of burner hearth, not only can improve the heat transfer efficiency of high temperature reheater body, and the arrangement mode of water pipe can reduce NO x, CO content, just adopt fire tube group high temperature reheater.The high suction-type lithium bromide again of fire tube group direct combustion machine, COP can reach about 1.5, reduces 1/2, burning and exhausting NO with respect to present lithium bromide direct fired absorption refrigeration body is long-pending xContent is lower than 30ppm, and CO content also is lowered to very low-level.
Summary of the invention
The purpose of this utility model just provides a kind of compact conformation, efficient, bromine cooling machine fire tube group high temperature reheater that the discharging of Air thing reduces.
Technical solution of the present utility model is: bromine cooling machine fire tube group high temperature reheater, by gas supply pipe 6, air delivery pipe 7, combustion gas and air mixing chamber 1, the premixed flat flame burner 8 of blowing-type, height again heat exchanger 10, liquid capsule 2, drum 3 and discharge flue 11 constitute, they connect successively be that combustion gas is connected with burner 8 with air mixing chamber 1, burner 8 is connected with high shell side 17 arrival ends of heat exchanger 10 again, height again the shell side 17 of heat exchanger 10 be connected with discharge flue 11.Burner is made of shell 13, distribution plate 14, porous ceramic plate 12, and connecting successively is that distribution plate 14 is welded on shell 13 inner surface correct positions, porous ceramic plate 12 and is attached to the opening of burner 8 groove form casings 13 and is lived by bolting.Height heat exchanger again divides tube side and shell side, tube side by height again on the heat exchanger chamber 23, tubulation 19 and following chamber 15 constitute, last chamber 23 and following chamber 15 link together by tubulation 19, tube side filling lithium-bromide solution.Shell side by tubulation 19 outer walls and height again the outer cover of heat exchanger inner surface surround, walk flue gas, shell side be divided into low NOx light pipe burning zone 16, low CO generate between dead band 18, light pipe bringing-up section 20, finned tube bringing-up section 21, they connect successively, and to be light pipe low NOx combustion section 16 with dead band 18 between low CO generates is connected, hangs down that dead band 18 is connected with light pipe bringing-up section 20 between the CO generation, light pipe bringing-up section 20 is connected with finned tube bringing-up section 21.
The method of using bromine cooling machine fire tube group high temperature reheater to carry out bromide-refrigerator fire-tube group cryogen steam regeneration, be applied in the economic benefits and social benefits direct combustion type bromine cooling machine, air and combustion gas pre-mixed fuel fully enter in the burner 8 after the mixing in combustion gas and air mixing chamber 1, air-flow is under distribution plate 14 effects, even distribution air-flow, circulate porous ceramic plate 12 surface micropores and form flat flame smooth combustion, direct heater body heat exchanger 19 shell sides of flat flame 17 low NOx light pipe burning zones 16, calory burning is spread apart rapidly, suppressed the NOx generation, the combustion high temperature reacting gas flow through low CO generate between behind the dead band complete oxidation, the light pipe bringing-up section 20 of flowing through successively again, finned tube bringing-up section 21, behind the discharge flue 11, enter in the atmosphere.Weak solution from direct combustion machine high-temperature heat exchanger enters high pressure reheater body heat exchanger tube side by weak solution feed tube 5, in tubulation, be heated, seethe with excitement, be condensed into intermediate solution, intermediate solution enters logical high-temperature heat exchanger pipeline through the intermediate solution outlet of liquid capsule 2, vaporization produces overheated water as refrigerant steam, accumulate in the drum 3, then, enter into the low-temperature reheater of direct combustion machine through pipeline through refrigerant vapour outlet 4.
Beneficial effect and benefit that the utility model reached are:
1. use the method and apparatus that this patent fire tube group high temperature reheater produces condensed steam, the thermal efficiency of bromine cooling machine unit obviously improves.
2. use the method and apparatus that this patent fire tube group high temperature reheater produces condensed steam, adopt porous ceramic plate flat flame combustion system, efficiency of combustion improves, and tubulation is heated evenly; Adopt high temperature reheater body heat exchanger tube fire tube group arrangement mode, can effectively suppress combustion process NO xGeneration with the discharging of pollutants such as CO.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural representation of the utility model fire tube group high temperature reheater bromine cooling machine high temperature reheater integral body.
Fig. 2 is a high temperature reheater body construction schematic diagram.
Among the figure, 1. combustion gas and air mixing chamber, 2. liquid capsule, 3. drum, 4. refrigerant vapour outlet, 5. weak solution feed tube, 6. Gas Pipe, 7. air hose, 8. blowing-type premixed flat flame burner, 9. intermediate solution outlet, 10. generator body, 11. smoke-boxes and flue, 12. porous ceramic plate, 13. burner housings, 14. distribution plates, 15. times chambers, 16. low NOx light pipe burning zone, 17. shell sides, dead band between 18. low CO generate, 19. heat exchanger tubes, 20. the light pipe section, 21. finned tubes, 22. flue gases, on 23. the chamber.
The specific embodiment
A kind of high temperature reheater of fire group tubular type lithium bromide direct combustion machine, by gas supply pipe 6, air delivery pipe 7, combustion gas and air mixing chamber 1, blowing-type premixed flat flame burner 8, height again heat exchanger 10, liquid capsule 2, drum 3 discharge flues constitute, their connection successively is that combustion gas is connected with burner 8 with air mixing chamber 1, burner 8 and height lower NOx light pipe burning zone 16 arrival ends of heat exchanger 10 be connected, height again the low finned tube section 16 of heat exchanger 10 be connected with discharge flue.Burner is made of shell 13, distribution plate 14, porous ceramic plate 12, connects distribution plate 14 successively and is welded on shell 13 inner surface correct positions, porous ceramic plate 12 and is attached to the opening of burner 8 groove form casings 13 and is lived by bolting.Height heat exchanger again divides tube side and shell side, tube side by height again on the heat exchanger chamber 23, tubulation 19 and following chamber 15 constitute, last chamber 23 and following chamber 15 link together by tubulation 19, tube side filling lithium-bromide solution.Shell side by tubulation 19 outer walls and height again the outer cover of heat exchanger inner surface surround, walk flue gas, shell side be divided into low NOx light pipe burning zone 16, low CO generate between dead band 18, light pipe bringing-up section 20, finned tube bringing-up section 21, they connect successively, and to be low NOx light pipe burning zone 16 with dead band 18 between low CO generates is connected, hangs down that dead band 18 is connected with light pipe bringing-up section 20 between the CO generation, light pipe bringing-up section 20 is connected with finned tube bringing-up section 21.
Embodiment one
Fire tube group high temperature reheater is applied in the economic benefits and social benefits direct combustion type bromine cooling machine cooling-water machine of 1500RT, calorific value 3800kal/Nm 3The town gas flow is at 82Nm 3, calorific value 11000Kcal/Nm 3Gas discharge at 82Kcal/Nm 3More than the Flammability limits, air beyond the explosion limit and combustion gas pre-mixed gas enter in the burner 8 after mixing chamber 1 fully mixes, air-flow is under distribution plate 14 effects, evenly distribute, circulate porous ceramic plate 12 surface micropores and form flat flame smooth combustion, direct heater body heat exchanger 19 shell sides of flat flame 17 low NOx light pipe burning zones 16, calory burning is spread apart rapidly, suppressed the NOx generation, the combustion high temperature reacting gas flow through low CO generate between behind the dead band complete oxidation, the light pipe bringing-up section 20 of flowing through successively again, finned tube bringing-up section 21, behind the discharge flue 11, enter in the atmosphere.From the concentration of direct combustion machine high-temperature heat exchanger be 58%, temperature is that 135 ℃ weak solution enters high pressure reheater body heat exchanger tube side by weak solution feed tube 5, in tubulation, be heated, seethe with excitement, concentrate, vaporization simultaneously produces overheated steam, accumulate in the drum 3, then, enter into the low-temperature reheater of direct combustion machine through refrigerant vapour outlet 4 through pipeline, the concentration 59% of the concentrated generation in the high temperature reheater, 159 ℃ of intermediate solution of temperature enter logical high-temperature heat exchanger pipeline through the intermediate solution outlet of liquid capsule 2.
Embodiment two
Fire tube group high temperature reheater is applied in the economic benefits and social benefits direct combustion type bromine cooling machine warm water machine of 1500RT, calorific value 3800kal/Nm 3The town gas flow is at 82Nm 3, calorific value 11000Kcal/Nm 3Gas discharge at 82Kcal/Nm 3Air beyond the above explosion limit of Flammability limits and combustion gas pre-mixed gas enter in the burner 8 after mixing chamber 1 fully mixes, air-flow is under distribution plate 14 effects, evenly distribute, circulate porous ceramic plate 12 surface micropores and form flat flame smooth combustion, direct heater body heat exchanger 19 shell sides of flat flame 17 low NOx light pipe burning zones 16, calory burning is spread apart rapidly, suppressed the NOx generation, the combustion high temperature reacting gas flow through low CO generate between behind the dead band complete oxidation, the light pipe bringing-up section 20 of flowing through successively again, finned tube bringing-up section 21, behind the discharge flue 11, enter in the atmosphere.From the concentration of direct combustion machine high-temperature heat exchanger be 58%, temperature is that 135 ℃ weak solution enters high pressure reheater body heat exchanger tube side by weak solution feed tube 5, in tubulation, be heated, seethe with excitement, concentrate, vaporization simultaneously produces overheated steam, accumulate in the drum 3, then, enter into the evaporimeter and the absorber of direct combustion machine through refrigerant vapour outlet 4 through pipeline, the concentration 59% of the concentrated generation in the high temperature reheater, 159 ℃ of intermediate solution of temperature enter logical high-temperature heat exchanger pipeline through the intermediate solution outlet of liquid capsule 2.

Claims (1)

1. bromine cooling machine fire tube group high temperature reheater, it is characterized in that, by gas supply pipe (6), air delivery pipe (7), combustion gas and air mixing chamber (1), blowing-type premixed flat flame burner (8), height again heat exchanger (10), liquid capsule (2), drum (3) discharge flue constitute, their connection successively is that combustion gas is connected with burner (8) with air mixing chamber (1), burner (8) and height again low NOx combustion section (16) arrival end of heat exchanger (10) be connected, height again the low finned tube section (16) of heat exchanger (10) be connected with discharge flue; Burner is made of shell (13), distribution plate (14), porous ceramic plate (12), connects distribution plate (14) successively and is welded on shell (13) inner surface correct position, porous ceramic plate (12) and is attached to the opening of burner (8) groove form casing (13) and is lived by bolting; Height heat exchanger again divides tube side and shell side, tube side by height again on the heat exchanger chamber (23), tubulation (19) and following chamber (15) constitute, last chamber (23) and following chamber (15) link together by tubulation (19), tube side filling lithium-bromide solution; Shell side by tubulation (19) outer wall and height again the outer cover of heat exchanger inner surface surround, walk flue gas, shell side be divided into light pipe low NOx combustion section (16), low CO generate between dead band (18), light pipe bringing-up section (20), finned tube bringing-up section (21), they connect successively, and to be light pipe low NOx combustion section (16) with dead band (18) between low CO generates is connected, hangs down that dead band (18) is connected with light pipe bringing-up section (20) between the CO generation, light pipe bringing-up section (20) is connected with finned tube bringing-up section (21).
CNU2006200904238U 2006-04-13 2006-04-13 High temp reheater for fire tube group of Br cooler Expired - Lifetime CN2903811Y (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100383471C (en) * 2006-04-13 2008-04-23 大连海事大学 Bromide-refrigerator fire-tube group cryogen steam regeneration method and device
CN112032698A (en) * 2020-09-18 2020-12-04 江苏双良锅炉有限公司 Novel low-nitrogen-emission cold flame combustion integrated steam boiler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100383471C (en) * 2006-04-13 2008-04-23 大连海事大学 Bromide-refrigerator fire-tube group cryogen steam regeneration method and device
CN112032698A (en) * 2020-09-18 2020-12-04 江苏双良锅炉有限公司 Novel low-nitrogen-emission cold flame combustion integrated steam boiler

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Effective date of abandoning: 20080423

C25 Abandonment of patent right or utility model to avoid double patenting