CN108592443B - Flue gas absorption type refrigerating system and generating device thereof - Google Patents
Flue gas absorption type refrigerating system and generating device thereof Download PDFInfo
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- CN108592443B CN108592443B CN201810337868.9A CN201810337868A CN108592443B CN 108592443 B CN108592443 B CN 108592443B CN 201810337868 A CN201810337868 A CN 201810337868A CN 108592443 B CN108592443 B CN 108592443B
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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
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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
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
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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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- 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
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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
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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
- 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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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Sorption Type Refrigeration Machines (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention relates to a flue gas absorption type refrigerating system and a generating device thereof, wherein the generating device comprises a high-temperature heat exchange module, a low-temperature heat exchange module and a catalytic denitrator, a flue gas outlet of the high-temperature heat exchange module is communicated with a flue gas inlet of the catalytic denitrator through a first flue gas pipeline, a flue gas inlet of the low-temperature heat exchange module is communicated with a flue gas outlet of the catalytic denitrator through a second flue gas pipeline, and absorbent solution subjected to heat exchange by the low-temperature heat exchange module is subjected to heat exchange by the high-temperature heat exchange module. Through dividing into two heat exchange modules of high, low temperature with flue gas heat transfer return circuit and concatenating the catalytic denitration ware between two heat exchange modules, when retrieving the waste heat that the gas equipment discharged fume, with the NOx desorption in the flue gas, because the flue gas has passed through high temperature heat exchange module earlier before getting into the catalytic denitration ware, can obtain the flue gas temperature with catalytic denitration temperature looks adaptation, reach energy-conserving and environmental protection's dual purpose.
Description
Technical Field
The invention belongs to the technical field of absorption refrigeration systems, and particularly relates to a generating device for a smoke absorption refrigeration system and the smoke absorption refrigeration system adopting the generating device.
Background
With the gradual market of electric power at home and abroad, the problem of environmental protection is increasingly prominent, and distributed systems with higher energy utilization efficiency are rapidly developed in developed countries in europe, america, korea, the day, and the like. In recent years, natural gas distributed energy encouragement policies set by governments at all levels in China promote investment and construction of natural gas distributed energy projects for energy consumption units and energy companies. The main mode of the natural gas distributed energy project is gas cooling, heating and power triple supply, namely natural gas is used as main fuel to drive gas equipment such as a gas turbine, a micro-combustion engine or an internal combustion engine to operate, the generated power supplies the power demand of users, and the waste heat discharged after the system generates power supplies heat and cold to the users through waste heat recycling equipment. By the method, the primary energy utilization rate of the whole system is greatly improved, the cascade utilization of energy is realized, the comprehensive energy utilization efficiency is improved, and energy conservation and emission reduction are realized.
At present, the waste heat recovery of the natural gas distributed energy station is mostly adoptedThe method of the absorption refrigerating unit can effectively recover the waste heat in the high-temperature flue gas (400-500 ℃) discharged by the gas equipment for cooling or heating, and the temperature of the recovered flue gas can be reduced to below 170 ℃. However, because of the high combustion temperature of gas turbine, micro-combustion engine or internal combustion engine, etc., the NOx content in the tail gas discharged by the equipment can only be controlled to 500mg/Nm3On the left and right sides, the increasing requirements for the emission of atmospheric pollutants in China cannot be met.
At present, the absorption refrigerating unit in the market usually only considers the recovery of waste heat, but does not consider the desorption of NOx, and the applicable temperature of common denitration catalyst is generally 250 ~ 360 ℃, so the flue gas temperature before the waste heat utilization is too high, unfavorable to the catalyst life-span, the flue gas temperature after the waste heat utilization is too low, and the denitration effect is relatively poor, and the running cost is high.
Disclosure of Invention
The embodiment of the invention relates to a generating device for a smoke absorption type refrigerating system and the smoke absorption type refrigerating system adopting the generating device, which can at least solve part of defects in the prior art.
The embodiment of the invention relates to a generating device for a flue gas absorption type refrigerating system, which comprises a high-temperature heat exchange module, a low-temperature heat exchange module and a catalytic denitrator, wherein a flue gas outlet of the high-temperature heat exchange module is communicated with a flue gas inlet of the catalytic denitrator through a first flue gas pipeline, a flue gas inlet of the low-temperature heat exchange module is communicated with a flue gas outlet of the catalytic denitrator through a second flue gas pipeline, and absorbent solution subjected to heat exchange by the low-temperature heat exchange module is subjected to heat exchange by the high-temperature heat exchange module.
As one embodiment, the high-temperature heat exchange module and the low-temperature heat exchange module are integrally arranged in the same heat exchanger shell and are sequentially arranged along the circulation direction of the absorbent solution in the heat exchanger shell, the catalytic denitrator is arranged outside the heat exchanger shell, and a refrigerant steam outlet is arranged on the heat exchanger shell.
As an embodiment, a flue gas mixer for premixing the flue gas and the denitration reducing agent is arranged on the first flue gas pipeline.
As one embodiment, the first flue gas pipeline and the second flue gas pipeline are both provided with a stop valve; a bypass pipe is connected to the first flue gas pipeline in a bypassing manner, the other end of the bypass pipe is connected to the second flue gas pipeline in a bypassing manner, two ends of the bypass pipe are respectively located on one side, far away from the catalytic denitrator, of the corresponding cut-off valve, and a bypass valve is arranged on the bypass pipe.
In one embodiment, a first temperature adjusting pipe for introducing high-temperature adjusting gas is connected to the first flue gas pipeline, and a first control valve is arranged on the first temperature adjusting pipe.
As one embodiment, a flue gas inlet of the high-temperature heat exchange module is connected with a high-temperature flue gas inlet pipe, and the other end of the first temperature adjusting pipe is connected to the high-temperature flue gas inlet pipe in a bypassing manner.
In an embodiment, a second temperature adjusting pipe for introducing low-temperature adjusting gas is connected to the first flue gas pipeline, and a second control valve is arranged on the second temperature adjusting pipe.
As one embodiment, a flue gas outlet of the low-temperature heat exchange module is connected with a low-temperature flue gas outlet pipe, and the other end of the second temperature adjusting pipe is connected to the low-temperature flue gas outlet pipe in a bypassing manner.
As one embodiment, the high-temperature heat exchange module and the low-temperature heat exchange module are both countercurrent heat exchange modules.
The embodiment of the invention relates to a flue gas absorption type refrigerating system which comprises an absorber, an evaporator, a condenser and a generating device, wherein the generating device is used for the flue gas absorption type refrigerating system, a refrigerant steam inlet of the condenser is communicated with a refrigerant steam outlet, a liquid refrigerant outlet of the condenser is connected with the evaporator, the evaporator is communicated with a gas inlet of the absorber, an absorbent solution outlet of a high-temperature heat exchange module is communicated with a liquid inlet of the absorber, and an absorbent solution inlet of a low-temperature heat exchange module is communicated with a liquid outlet of the absorber.
The embodiment of the invention at least has the following beneficial effects:
according to the generating device for the flue gas absorption type refrigerating system, the flue gas heat exchange loop is divided into the high-temperature heat exchange module and the low-temperature heat exchange module, and the catalytic denitrator is connected between the two heat exchange modules in series, so that NOx in the flue gas is removed while the waste heat of the flue gas discharged by the gas equipment is recovered, the latest national emission standard is met, and the natural gas distributed energy is really energy-saving and environment-friendly;
because the flue gas passes through the high-temperature heat exchange module before entering the catalytic denitration device, the flue gas temperature matched with the catalytic denitration temperature can be obtained, the problems that the flue gas temperature of a gas turbine is too high and the flue gas temperature is too low after waste heat utilization and is not matched with the existing denitration catalyst are solved, and the dual purposes of energy conservation and environmental protection are achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a generating device for a flue gas absorption refrigeration system according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a generating device for a flue gas absorption refrigeration system according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a generating device for a flue gas absorption refrigeration system according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a flue gas absorption refrigeration system according to a fourth embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1, an embodiment of the present invention provides a generating device 100 for a flue gas absorption refrigeration system, including a high temperature heat exchange module 1012, a low temperature heat exchange module 1013, and a catalytic denitrator 102, where a flue gas outlet of the high temperature heat exchange module 1012 is communicated with a flue gas inlet of the catalytic denitrator 102 through a first flue gas pipeline, a flue gas inlet of the low temperature heat exchange module 1013 is communicated with a flue gas outlet of the catalytic denitrator 102 through a second flue gas pipeline, and an absorbent solution after heat exchange by the low temperature heat exchange module 1013 is subjected to heat exchange by the high temperature heat exchange module 1012.
According to the generating device for the flue gas absorption type refrigerating system, the flue gas heat exchange loop is divided into the high-temperature heat exchange module and the low-temperature heat exchange module, and the catalytic denitrator 102 is connected between the two heat exchange modules in series, so that NOx in the flue gas is removed while the waste heat of the flue gas discharged by the gas equipment is recovered, the latest national emission standard is met, and the natural gas distributed energy is really energy-saving and environment-friendly; because the flue gas passes through the high-temperature heat exchange module 1012 before entering the catalytic denitrator 102, the flue gas temperature matched with the catalytic denitration temperature can be obtained, the problems that the flue gas temperature of a combustion engine is too high and the flue gas temperature is too low after waste heat utilization and is not matched with the existing denitration catalyst are solved, and the dual purposes of energy conservation and environmental protection are achieved.
Preferably, as shown in fig. 1, the high temperature heat exchange module 1012 and the low temperature heat exchange module 1013 are integrally disposed in the same heat exchanger housing 1011, that is, they share the same absorbent solution flowing space, and form a solution heat exchanger 101 together with the heat exchanger housing 1011, and are sequentially arranged along the absorbent solution flowing direction in the heat exchanger housing 1011, the catalytic denitrator 102 is disposed outside the heat exchanger housing 1011, and the heat exchanger housing 1011 is provided with a refrigerant vapor outlet. Generally, the high temperature heat exchange module 1012 includes a high temperature heat exchange pipe, and the low temperature heat exchange module 1013 includes a low temperature heat exchange pipe, and both the high temperature heat exchange pipe and the low temperature heat exchange pipe are disposed in the same heat exchanger housing 1011. The design can simplify the structure of the heat exchange unit/generating device, shorten the length of the flue gas pipeline and the absorbent solution pipeline, and reduce the heat loss of the flue gas and the absorbent solution. In this embodiment, a mode that flue gas flows through the heat exchange tubes and an absorbent solution flows through the heat exchanger housing 1011 is adopted, and it is also feasible to adopt opposite heat exchange medium flowing spaces. Generally, the refrigerant vapor outlet is provided at the upper portion or the top of the heat exchanger housing 1011, and the heated and vaporized refrigerant is separated from the absorbent solution and can be discharged through the refrigerant vapor outlet; the heat exchanger housing is preferably provided with an absorbent solution inlet and an absorbent solution outlet, and is preferably provided at a lower portion of the heat exchanger housing 1011 and at opposite side walls of the heat exchanger housing 1011, so that an absorbent solution flowing direction from the absorbent solution inlet to the absorbent solution outlet is formed in the heat exchanger housing 1011. The flue gas inlet of the solution heat exchanger 101 is used for receiving high-temperature flue gas introduced into a gas-fired device; the high-temperature heat exchange module 1012 and the low-temperature heat exchange module 1013 may both adopt conventional gas-liquid heat exchange equipment such as a heat exchange tube, and the specific structure thereof is not described in detail herein.
Further, the catalytic denitrator 102 and the solution heat exchanger 101 are modularly and integrally arranged: a modular mounting frame is arranged on the heat exchanger shell 1011, and the catalytic denitrator 102 is mounted on the modular mounting frame and integrated with the solution heat exchanger 101 into a flue gas heat exchange denitration module; further, the flue gas mixer 103 is also integrally installed with the catalytic denitrator 102 and the solution heat exchanger 101. The integrally installed flue gas heat exchange denitration module can ensure that a connecting pipeline is as short as possible, and reduce the heat loss of flue gas; the whole design installation and maintenance under the line can be carried out in advance, the installation and maintenance working hours are shortened, and the production efficiency is improved. The position of the catalytic denitrator 102 needs to take the space for catalyst replacement into consideration.
In another embodiment, the high temperature heat exchange module includes a first heat exchange housing (not shown) and a first heat exchange tube disposed in the first heat exchange housing, a high temperature gaseous refrigerant outlet is disposed on the first heat exchange housing, the low temperature heat exchange module includes a second heat exchange housing (not shown) and a second heat exchange tube disposed in the second heat exchange housing, a low temperature gaseous refrigerant outlet is disposed on the second heat exchange housing, and an absorbent solution outlet of the second heat exchange housing is communicated with an absorbent solution inlet of the first heat exchange housing. In the design, the heat exchange of the absorbent solution is independent, and the absorbent solution exchanging heat with the high-temperature heat exchange module is not mixed with the absorbent solution exchanging heat with the low-temperature heat exchange module, so that the refrigerant in the absorbent solution can be fully evaporated and separated. Based on this scheme, first heat transfer casing, catalytic denitration ware casing and second heat transfer casing are because all be independent equipment, consequently make things convenient for arranging of casing and pipeline etc. if first heat transfer casing, catalytic denitration ware 102 casing set gradually and integrated the installation as a whole with the second heat transfer casing along the horizontal direction, also can be first heat transfer casing, catalytic denitration ware casing sets gradually and integrated the installation as a whole with the second heat transfer casing from bottom to top. For this embodiment, it is further preferred that the generating device 100 further comprises a solution preheating unit (not shown) comprising a third heat exchange shell and a third heat exchange tube arranged inside the third heat exchange shell, an inlet end of the third heat exchange tube being in communication with the high temperature gaseous refrigerant outlet, and an absorbent solution outlet of the third heat exchange shell being in communication with the absorbent solution inlet of the second heat exchange shell. This way can fully utilize the heat of the high temperature gaseous refrigerant, the preheated absorbent solution is easier to separate the refrigerant in the subsequent heat exchange process, on the other hand, the work load and energy consumption of the condenser 400 in the absorption refrigeration system can be reduced due to the reduction of the temperature of the gaseous refrigerant.
As for the above-mentioned manner of providing the solution preheating unit, it is also applicable to the above-mentioned scheme that the high temperature heat exchange module 1012 and the low temperature heat exchange module 1013 are integrally disposed in the same heat exchanger shell 1011, and a high temperature refrigerant vapor outlet and a low temperature refrigerant vapor outlet may be respectively opened on the heat exchanger shell 1011, wherein the high temperature refrigerant vapor outlet is located above the high temperature heat exchange module 1012, and the high temperature refrigerant vapor outlet is communicated with the inlet end of the third heat exchange tube.
Further preferably, as shown in fig. 1, the generating device further comprises a flue gas mixer 103 for premixing the flue gas and the denitration reducing agent, and the flue gas mixer 103 is disposed on the first flue gas pipeline 104. This flue gas blender 103 is equipped with the reductant mouth of spouting, spouts into the reductant and can realize the premixing of flue gas and denitration reductant to improve the denitration efficiency and the effect of catalytic denitration ware 102.
The operation of the generator 100 for a flue gas absorption refrigeration system is substantially as follows:
the high-temperature heat exchange module 1012 receives high-temperature flue gas of the gas equipment, the high-temperature flue gas with the temperature of 400-500 ℃ exchanges heat with the absorbent solution in the high-temperature heat exchange module 1012, and the temperature of the flue gas is reduced to 250-360 ℃;
introducing the flue gas discharged by the high-temperature heat exchange module 1012 into the flue gas mixer 103 through the first flue gas pipeline 104, and premixing the flue gas and the reducing agent in the flue gas mixer 103;
introducing the flue gas discharged by the flue gas mixer 103 into the catalytic denitrator 102, removing NOx in the flue gas under the action of a catalyst and a reducing agent, and completing denitration, wherein the temperature of the flue gas is basically unchanged in the process;
the flue gas discharged from the catalytic denitrator 102 returns to the low-temperature heat exchange module 1013 through the second flue gas pipeline 105, and further exchanges heat with the absorbent solution, and the flue gas is discharged through a pipeline after the temperature of the flue gas is reduced to the design temperature.
In the above-mentioned generating device 100, the heat exchange capacity of the high-temperature heat exchange module 1012 can be designed and determined according to the requirements of the flue gas source temperature and the applicable temperature of the denitration catalyst; the heat exchange capacity of the low temperature heat exchange module 1013 is determined by design calculation according to the designed outlet temperature of the high temperature heat exchange module 1012 and the required exhaust gas temperature.
The generating device 100 for the flue gas absorption refrigeration system is further optimized, as shown in fig. 1, the high-temperature heat exchange module 1012 and the low-temperature heat exchange module 1013 are both counter-flow heat exchange modules, so that the heat exchange effect, that is, the flue gas waste heat utilization effect, can be improved; for the above-mentioned solution in which the high temperature heat exchange module 1012 and the low temperature heat exchange module 1013 are integrally disposed in the same heat exchanger housing 1011, the flow direction of the flue gas of the high temperature heat exchange module 1012 and the flow direction of the flue gas of the low temperature heat exchange module 1013 are both opposite to the flow direction of the absorbent solution in the heat exchanger housing 1011, that is, the flue gas and the absorbent solution in the solution heat exchanger 101 perform countercurrent heat exchange.
In a preferred embodiment, the shell of the catalytic denitrator 102 is provided with an insulating layer; in addition, the first flue gas pipeline 104 and the second flue gas pipeline 105 are also preferably provided with heat insulation layers, so that the heat loss of the flue gas can be reduced, and the waste heat utilization effect of the flue gas can be improved.
Example two
Referring to fig. 2, an embodiment of the present invention provides a generating device 100 for a flue gas absorption refrigeration system, where a structure of the generating device 100 is substantially the same as that of the generating device 100 for a flue gas absorption refrigeration system provided in the first embodiment, and the generating device 100 provided in this embodiment further includes the following optimized technical solutions:
the first flue gas pipeline 104 and the second flue gas pipeline 105 are both provided with a shut-off valve 107; a bypass pipe 106 is connected to the first flue gas pipe 104, the other end of the bypass pipe 106 is connected to the second flue gas pipe 105, two ends of the bypass pipe 106 are respectively located at one side of the corresponding cut-off valve 107, which is far away from the catalytic denitrator 102, and a bypass valve (not shown) is arranged on the bypass pipe 106. That is, on the first flue gas pipe 104, the bypass point of the bypass pipe 106 is located between the shut-off valve 107 on the first flue gas pipe 104 and the flue gas outlet of the high temperature heat exchange module 1012; on the second flue gas pipe 105, the bypass point of the bypass pipe 106 is located between the shut-off valve 107 on the second flue gas pipe 105 and the flue gas inlet of the low temperature heat exchange module 1013.
Under normal working conditions, the stop valves 107 on the first flue gas pipeline 104 and the second flue gas pipeline 105 are both opened, and the bypass valve is closed; when the catalyst needs to be replaced or the catalytic denitrator 102 needs to be overhauled, the two cut-off valves 107 can be closed, the bypass valve is opened, and the flue gas subjected to heat exchange by the high-temperature heat exchange module 1012 directly enters the low-temperature heat exchange module 1013 through the bypass pipe 106, so that the catalyst can be replaced on line or the catalytic denitrator 102 can be overhauled and maintained, and the continuous and stable operation of a refrigerating unit and a generating set is ensured.
EXAMPLE III
As shown in fig. 3, an embodiment of the present invention provides a generating device 100 for a flue gas absorption refrigeration system, where a structure of the generating device 100 is substantially the same as that of the generating device 100 for a flue gas absorption refrigeration system provided in the first embodiment, and the generating device 100 provided in this embodiment further includes the following optimized technical solutions:
a first temperature adjusting pipe 108 for introducing high-temperature adjusting gas is connected to the first flue gas pipe 104, and a first control valve (not shown) is disposed on the first temperature adjusting pipe 108.
And/or a second temperature adjusting pipe for introducing low-temperature adjusting gas is connected beside the first flue gas pipeline, and a second control valve is arranged on the second temperature adjusting pipe.
When the temperature of the flue gas entering the catalytic denitrator 102 is not matched with the applicable temperature of the denitration catalyst, high-temperature gas and/or low-temperature gas (the high-temperature gas/the low-temperature gas refers to a gas with a temperature higher than or lower than the temperature of the flue gas at the outlet of the high-temperature heat exchange module 1012) can be mixed into the first temperature adjusting pipe 108 and/or the second temperature adjusting pipe connected to the first flue gas pipeline 104, so that the inlet temperature of the catalytic denitrator 102 can be adjusted, the optimal denitration temperature can be obtained, the stable and efficient operation of the catalytic denitrator 102 can be ensured, and the full utilization of the waste heat of the flue gas and the environmental protection performance of the flue gas absorption type refrigeration system can.
The temperature-adjusting gas source of the first temperature-adjusting pipe 108 can be as follows:
(1) as an embodiment, as shown in fig. 3, a high-temperature flue gas inlet pipe is connected to a flue gas inlet of the high-temperature heat exchange module 1012, and the other end of the first temperature adjusting pipe 108 is connected to the high-temperature flue gas inlet pipe.
(2) The flue gas inlet of the high-temperature heat exchange module 1012 is connected with a high-temperature flue gas inlet pipe connected with an external high-temperature flue gas source, and the first temperature adjusting pipe 108 is a medium-temperature flue gas inlet pipe connected with an external medium-temperature flue gas source.
In the scheme (1), the smoke of the gas equipment is directly introduced, the structure is simple, the variety of the smoke is single, and the control is easy; in above-mentioned scheme (2), introduce outside medium temperature flue gas to can utilize the flue gas of multiple different qualities simultaneously by a set of refrigerating system, extensive applicability is particularly suitable for the more trade of flue gas variety such as iron and steel enterprise, and the medium temperature flue gas is not through high temperature heat transfer module 1012 heat transfer, avoids high temperature heat transfer module 1012 export flue gas temperature lower and is not suitable for the denitration.
The source of tempering gas for the second tempering tube is preferably: and a smoke outlet of the low-temperature heat exchange module is connected with a low-temperature smoke outlet pipe, and the other end of the second temperature regulating pipe is connected to the low-temperature smoke outlet pipe in a side-by-side mode.
Example four
Referring to fig. 4, an embodiment of the present invention relates to a flue gas absorption refrigeration system, which includes an absorber 200, an evaporator 300, a condenser 400 and a generator 100, wherein the generator 100 may adopt the generator 100 for a flue gas absorption refrigeration system provided in the first embodiment, the second embodiment and the third embodiment, and detailed structures thereof are not repeated herein. A refrigerant vapor inlet of the condenser 400 is communicated with the refrigerant vapor outlet, a liquid refrigerant outlet of the condenser 400 is connected with the evaporator 300, the evaporator 300 is communicated with a gas inlet of the absorber 200, an absorbent solution outlet (absorbent solution outlet on the heat exchanger housing 1011) of the high temperature heat exchange module 1012 is communicated with a liquid inlet of the absorber 200, and an absorbent solution inlet (absorbent solution inlet on the heat exchanger housing 1011) of the low temperature heat exchange module 1013 is communicated with a liquid outlet of the absorber 200.
Refrigerant vapor discharged from a refrigerant vapor outlet on the heat exchanger housing 1011 of the solution heat exchanger 101 is introduced into the condenser 400 to be condensed into liquid refrigerant, liquid refrigerant generated by the condenser 400 is introduced into the evaporator 300 and is evaporated while absorbing heat in the evaporator 300, the formed gaseous refrigerant is introduced into the absorber 200, is absorbed by the absorbent solution in the absorber 200, the absorbent solution having absorbed the gaseous refrigerant is re-sent into the heat exchanger housing 1011 of the solution heat exchanger 101 by the solution pump, is heated in the heat exchanger housing 1011 to separate refrigerant vapor, and completes one cycle.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a generating device for flue gas absorption formula refrigerating system which characterized in that: the device comprises a high-temperature heat exchange module, a low-temperature heat exchange module and a catalytic denitrator, wherein a flue gas outlet of the high-temperature heat exchange module is communicated with a flue gas inlet of the catalytic denitrator through a first flue gas pipeline, a flue gas inlet of the low-temperature heat exchange module is communicated with a flue gas outlet of the catalytic denitrator through a second flue gas pipeline, and an absorbent solution subjected to heat exchange by the low-temperature heat exchange module is subjected to heat exchange by the high-temperature heat exchange module;
the high-temperature heat exchange module comprises a first heat exchange shell and a first heat exchange tube arranged in the first heat exchange shell, and a first high-temperature gaseous refrigerant outlet is formed in the first heat exchange shell; the low-temperature heat exchange module comprises a second heat exchange shell and a second heat exchange tube arranged in the second heat exchange shell, a first low-temperature gaseous refrigerant outlet is formed in the second heat exchange shell, and an absorbent solution outlet of the second heat exchange shell is communicated with an absorbent solution inlet of the first heat exchange shell; the generating device further comprises a solution preheating unit, wherein the solution preheating unit comprises a third heat exchange shell and a third heat exchange tube arranged in the third heat exchange shell, the inlet end of the third heat exchange tube is communicated with the first high-temperature gaseous refrigerant outlet, and the absorbent solution outlet of the third heat exchange shell is communicated with the absorbent solution inlet of the second heat exchange shell.
2. The smoke absorption chiller system generator of claim 1 wherein: and a flue gas mixer for premixing flue gas and a denitration reducing agent is arranged on the first flue gas pipeline.
3. The smoke absorption chiller system generator of claim 1 wherein: the first flue gas pipeline and the second flue gas pipeline are both provided with a stop valve;
a bypass pipe is connected to the first flue gas pipeline in a bypassing manner, the other end of the bypass pipe is connected to the second flue gas pipeline in a bypassing manner, two ends of the bypass pipe are respectively located on one side, far away from the catalytic denitrator, of the corresponding cut-off valve, and a bypass valve is arranged on the bypass pipe.
4. The smoke absorption chiller system generator of claim 1 wherein: and a first temperature adjusting pipe for guiding high-temperature adjusting gas is connected beside the first flue gas pipeline, and a first control valve is arranged on the first temperature adjusting pipe.
5. The smoke absorption chiller system generator of claim 4 wherein: the flue gas inlet of high temperature heat exchange module is connected with the high temperature flue gas inlet pipe, the other end of first thermoregulation pipe connect by side on the high temperature flue gas inlet pipe.
6. The generation apparatus for a flue gas absorption refrigeration system according to claim 1 or 4 wherein: and a second temperature adjusting pipe for introducing low-temperature adjusting gas is connected beside the first flue gas pipeline, and a second control valve is arranged on the second temperature adjusting pipe.
7. The smoke absorption chiller system generator of claim 6 wherein: and a smoke outlet of the low-temperature heat exchange module is connected with a low-temperature smoke outlet pipe, and the other end of the second temperature regulating pipe is connected to the low-temperature smoke outlet pipe in a side-by-side mode.
8. The smoke absorption chiller system generator of claim 1 wherein: the high-temperature heat exchange module and the low-temperature heat exchange module are both countercurrent heat exchange modules.
9. The utility model provides a flue gas absorption formula refrigerating system, includes absorber, evaporimeter, condenser and generating device, its characterized in that: the generator adopts a generator for a flue gas absorption refrigeration system as claimed in any one of claims 1 to 8, wherein a refrigerant vapor inlet of the condenser is communicated with the refrigerant vapor outlet, a liquid refrigerant outlet of the condenser is connected with the evaporator, the evaporator is communicated with a gas inlet of the absorber, an absorbent solution outlet of the high-temperature heat exchange module is communicated with a liquid inlet of the absorber, and an absorbent solution inlet of the low-temperature heat exchange module is communicated with a liquid outlet of the absorber.
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| CN108592443B true CN108592443B (en) | 2021-02-09 |
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| CN114234472A (en) * | 2021-12-27 | 2022-03-25 | 北京华源泰盟节能设备有限公司 | Waste heat utilization system of generator set |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003144853A (en) * | 2001-11-12 | 2003-05-20 | Nippon Shokubai Co Ltd | Method and equipment for treating exhaust gas |
| CN204933221U (en) * | 2015-07-28 | 2016-01-06 | 中国华电工程(集团)有限公司 | A kind of denitrating flue gas treatment system in conjunction with distributed system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07213867A (en) * | 1994-02-08 | 1995-08-15 | Mitsubishi Heavy Ind Ltd | Boiler waste gas treating device |
| CN2929596Y (en) * | 2006-07-17 | 2007-08-01 | 祝建军 | Absorptive heat pump system for recovering waste heat from power plant, printing and dyeing, oil field and pharmaceutical industries |
| CN202521936U (en) * | 2011-11-04 | 2012-11-07 | 苏州优能节能技术有限公司 | Waste heat absorption refrigeration device for micro-oil screw air compressor |
| CN206247373U (en) * | 2016-12-09 | 2017-06-13 | 浙江天创环境科技有限公司 | A kind of pipe heat exchanger residual neat recovering system |
| CN207012800U (en) * | 2017-06-27 | 2018-02-16 | 北京国能中电节能环保技术股份有限公司 | A kind of energy-saving full load denitrating system |
-
2018
- 2018-04-16 CN CN201810337868.9A patent/CN108592443B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003144853A (en) * | 2001-11-12 | 2003-05-20 | Nippon Shokubai Co Ltd | Method and equipment for treating exhaust gas |
| CN204933221U (en) * | 2015-07-28 | 2016-01-06 | 中国华电工程(集团)有限公司 | A kind of denitrating flue gas treatment system in conjunction with distributed system |
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