CN104806333A - Ship engine waste heat power generation comprehensive utilization method - Google Patents
Ship engine waste heat power generation comprehensive utilization method Download PDFInfo
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- CN104806333A CN104806333A CN201510219726.9A CN201510219726A CN104806333A CN 104806333 A CN104806333 A CN 104806333A CN 201510219726 A CN201510219726 A CN 201510219726A CN 104806333 A CN104806333 A CN 104806333A
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- power generation
- flue gas
- generation medium
- evaporator
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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
Abstract
The invention discloses a ship engine waste heat power generation comprehensive utilization method. The ship engine waste heat power generation comprehensive utilization method comprises the following steps: (1) a flue gas evaporator is arranged on a flue gas exhausting channel of a ship heat-conduction oil furnace, and high-temperature flue gas passes through a shell pass of the flue gas evaporator; a power generation medium of a waste heat power generation system passes through the shell pass of the flue gas evaporator, and the power generation medium is subjected to heat exchange and heat suction with the high-temperature flue gas; meanwhile, cylinder sleeve cooling circulating water of a ship engine set enters a shell pass of a pipe shell type evaporator and is subjected to heat exchange with the power generation medium entering the shell pass of the pipe shell type evaporator of the waste heat power generation system; (2) after the power generation medium is evaporated, the power generation medium is changed into high-temperature and high-pressure steam and is conveyed into an expansion machine, and the expansion machine is propelled to output mechanical power so as to drive a three-phase asynchronous motor to generate power; (3) then the power generation medium enters an underwater condenser outside a board; (4) the condensed power generation medium passes through a fully-closed underwater medium pressurizer to be divided into two paths, namely one path is returned back to the flue gas evaporator, and the other path is returned back to the pipe shell type evaporator. With the adoption of the method, the purification efficiency of a power generation system is improved.
Description
Technical field
The present invention relates to residual heat integrative Application way, particularly power engine cogeneration method of comprehensive utilization peculiar to vessel.
Background technique
Current China various ships power engine production technology is ripe, and is widely used.The main Types of power engine peculiar to vessel is driven fuel dynamic engine substantially.The binding mode of current power engine peculiar to vessel mainly contains and provides ship power, electric power and heat, and the trans-utilization rate of its fuel oil heat is generally less than 40%, and remaining heat, except production heating and domestic hot-water use, substantially externally discharges.As shown in Figure 1, Ship Waste Heat form mainly contains two kinds: the discharge of power engine tail gas heat quantity peculiar to vessel and cylinder sleeve cooling circulating water heat, power engine exhaust temperature peculiar to vessel is about 350-400 DEG C, through heat-conducting oil furnace, heat-conducting oil furnace has carried out heat exchange utilization to using waste heat from tail gas, and exhaust temperature is down to 150-200 DEG C simultaneously, be disposed in air, now, tail gas and ambient temperature still have the temperature difference of 120-180 DEG C, have the space utilized further.For power engine cylinder sleeve cooling circulating water, the cooling water temperature entering powerplant module cylinder sleeve is 55 DEG C, discharge temperature is 85 DEG C, most situation utilizes jacket water cooler to be reduced by cylinder sleeve cooling temperature of circulating water, heat is drained into surrounding water, cause the waste of energy, cause the pollution of environment on the other hand.
Summary of the invention
The object of the invention is to the deficiency overcoming prior art existence, there is provided one that power engine waste heat can be utilized to produce electric energy, utilize surrounding water to carry out condensation simultaneously, the impact of environmental temperature fluctuation on condensing temperature can be eliminated, and can reduce low-temperature generating system from power consumption, improve further the power engine cogeneration method of comprehensive utilization peculiar to vessel of the utilization ratio of the energy.
For the technological scheme realizing the object of the invention employing is as follows:
Power engine cogeneration method of comprehensive utilization peculiar to vessel of the present invention, it comprises the following steps:
(1) flue gas evaporator is set on the discharge flue of heat-conducting oil furnace peculiar to vessel, flue gas evaporator adopts fin tube, flue gas evaporator shell side is by high-temperature flue gas, and flue gas evaporator tube side is by the power generation medium of afterheat generating system, and power generation medium and high-temperature flue gas carry out heat exchange heat absorption; The cylinder sleeve cooling circulating water of powerplant module peculiar to vessel enters shell-and-tube evaporator tube side simultaneously, carries out heat exchange with the power generation medium of the shell-and-tube evaporator shell side entering afterheat generating system; Described power generation medium adopts HFA 134a;
(2) high temperature and high pressure steam is become after the power generation medium after absorbing high-temperature flue gas waste heat and the power generation medium evaporation after shell-and-tube evaporator heat absorption, decompressor is sent into by pipeline, promote decompressor and export mechanical work, drive three phase induction generator generates electricity, generate electricity can for storage battery electric power storage or directly, described three phase induction generator adopts remanent magnetism self-excitation pattern, can from network operation;
(3) export the power generation medium after expansion work and enter condenser under the outside water be arranged on outside hull, under outside water, condenser utilizes the flowing of river or the relative ship side of seawater to power generation medium condensation, and power generation medium is condensed into liquid state;
(4) condensed power generation medium is divided into two-way after media supercharger under totally-enclosed water, and a road is got back to described flue gas evaporator and completed a power generation cycle and another road is got back to described shell-and-tube evaporator and completed a power generation cycle.
Beneficial effect of the present invention is as follows:
What the present invention proposed utilizes power engine waste heat peculiar to vessel to implement the system of generating, and its intrasystem power generation medium is a kind of low boiling point working medium.The waste heat amount that power generation medium absorbs all kinds of form in vaporizer realizes phase transformation evaporation, can produce the gaseous fluid of elevated pressures and temperature.Utilize the expansion characteristics of this kind of heat/hydraulic fluid, realized the conversion of mechanical energy by decompressor, and drive electrical generators generating, realize the effect of clean power supply.
If when hull needs life heat, can reduce generated energy or the halt system of residual heat system peculiar to vessel, reduce the absorption for waste heat, it is hot that the waste heat that power engine peculiar to vessel is produced meets life.The flexible transformation of cogeneration and waste heat for supplying two kinds of patterns can be realized thus, realize the effect of saving fuel oil and protection of the environment simultaneously.
The present invention proposes the method for by surrounding water, power generation medium being carried out to condensation, the impact of environmental temperature fluctuation can be eliminated, power generation system is made to reach the pattern of annual basicly stable operation, and utilize the relative movement of surrounding water and boats and ships, save the cooling water recirculation system of Conventional thermoelectric system, thus save cooling water system energy consumption, improve power generation system net efficiency, make power engine utilization rate of waste heat peculiar to vessel obtain larger raising, improve the utilization ratio of the energy further.
Accompanying drawing explanation
Fig. 1 is existing Ship Waste Heat distribution map;
Fig. 2 is the application schematic diagram of power engine cogeneration method of comprehensive utilization peculiar to vessel of the present invention;
Fig. 3 is the System's composition figure of power engine fume afterheat gas-to electricity method peculiar to vessel of the present invention;
Fig. 4 is the System's composition figure of power engine cylinder sleeve cooling circulating water cogeneration Application way peculiar to vessel of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Specific embodiment mode described herein only for explaining the present invention, the protection domain be not intended to limit the present invention.
What the present invention proposed utilizes power engine afterheat generating system peculiar to vessel, and its main guiding theory is the temperature difference made full use of between the waste heat of discharge and water body, realizes the effect of thermoelectric conversion.The character utilizing water body to conduct heat in addition apparently higher than the characteristic of gas, and natural water with season temperature variation fluctuation less, especially hot season natural water temperature be starkly lower than air temperature, be desirable low-temperature receiver.Working environment and the natural water of boats and ships accompany all the time, and therefore the utilization of natural water is very convenient and energy-conservation; Simultaneously the heat production temperature of power engine peculiar to vessel is also relatively stable, and the afterheat generating system of convenience will keep comparatively stable working efficiency whereby, and this also facilitates condition for the design of generator set, manufacture, summary and stable operation provide.
As shown in Figure 2, for the tail gas of heat-conducting oil furnace exhaust section, power generation system peculiar to vessel is set, flue gas is further cooled, be cooled to about 50 DEG C, drain into air.For the waste heat of the cylinder sleeve circulating water of powerplant module peculiar to vessel, utilize low-temperature generating system peculiar to vessel to replace original jacket water cooler, while generating, cylinder sleeve cooling circulating water is cooled (comparison diagram 1).
Based on above-mentioned principle, concrete grammar of the present invention is as follows:
Power engine cogeneration method of comprehensive utilization peculiar to vessel of the present invention, it comprises the following steps:
(1) flue gas evaporator 1 is set on the discharge flue of heat-conducting oil furnace 6 peculiar to vessel, flue gas evaporator adopts fin tube, flue gas evaporator shell side is by high-temperature flue gas, and flue gas evaporator tube side is by the power generation medium of afterheat generating system, and power generation medium and high-temperature flue gas carry out heat exchange heat absorption; The cylinder sleeve cooling circulating water of powerplant module peculiar to vessel enters shell-and-tube evaporator 7 tube side simultaneously, carries out heat exchange with the power generation medium of shell-and-tube evaporator 7 shell side entering afterheat generating system; Described power generation medium adopts HFA 134a, i.e. R134a.This power generation medium does not have destruction to ozonosphere, and nontoxic, nonirritant, non-corrosiveness.Physical parameter is in table one.
(2) high temperature and high pressure steam is become after the power generation medium after absorbing high-temperature flue gas waste heat and the power generation medium evaporation after shell-and-tube evaporator heat absorption, decompressor 2 is sent into by pipeline, promote decompressor 2 and export mechanical work, three phase induction generator 5 is driven to generate electricity, generate electricity can for storage battery electric power storage or directly, described three phase induction generator 5 adopts remanent magnetism self-excitation pattern, from network operation, can be applicable to the environment that boats and ships offshore is run;
(3) export the power generation medium after expansion work and enter condenser 3 under the outside water be arranged on outside hull, under outside water, condenser 3 utilizes the flowing of river or the relative ship side of seawater to power generation medium condensation, and power generation medium is condensed into liquid state.
(4) condensed power generation medium is divided into two-way after media supercharger under totally-enclosed water 4, and a road is got back to described flue gas evaporator and completed a power generation cycle and another road is got back to described shell-and-tube evaporator and completed a power generation cycle.
Table one: circulatory mediator physical property table
Embodiment 1
(1) flue gas evaporator 1 is set on the discharge flue of heat-conducting oil furnace 6 peculiar to vessel, flue gas evaporator adopts fin tube, flue gas evaporator shell side is by high-temperature flue gas, and flue gas evaporator tube side is by the power generation medium of afterheat generating system, and power generation medium and high-temperature flue gas carry out heat exchange heat absorption; The cylinder sleeve cooling circulating water of powerplant module peculiar to vessel enters shell-and-tube evaporator 7 tube side simultaneously, carries out heat exchange with the power generation medium of shell-and-tube evaporator 7 shell side entering afterheat generating system; Described power generation medium adopts HFA 134a, i.e. R134a.
(2) high temperature and high pressure steam is become after the power generation medium after absorbing high-temperature flue gas waste heat and the power generation medium evaporation after shell-and-tube evaporator heat absorption, decompressor 2 is sent into by pipeline, promote decompressor 2 and export mechanical work, three phase induction generator 5 is driven to generate electricity, generate electricity can for storage battery electric power storage or directly, described three phase induction generator 5 adopts remanent magnetism self-excitation pattern, can from network operation;
(3) export the power generation medium after expansion work and enter condenser 3 under the outside water be arranged on outside hull, under outside water, condenser 3 utilizes the flowing of river or the relative ship side of seawater to power generation medium condensation, and power generation medium is condensed into liquid state.
(4) condensed power generation medium is divided into two-way after media supercharger under totally-enclosed water 4, and a road is got back to described flue gas evaporator and completed a power generation cycle and another road is got back to described shell-and-tube evaporator and completed a power generation cycle.
In said method, if the using waste heat from tail gas discharge amount of certain power engine peculiar to vessel and cylinder sleeve cooling circulating water waste heat discharge amount are as shown in Table 2; Afterheat generating system selects R134a to be power generation medium.
Be a 8PC4-2L power engine peculiar to vessel for main frame, normal power is 8.23 × 106W, and during normal/cruise, tail gas discharge capacity is mg=14.96kg/s, exhaust temperature T after heat-conducting oil furnace
g=200 DEG C.Cylinder sleeve cool cycles water flow is q
w=80m
3/ h, power engine jacket-cooling water peculiar to vessel enters cylinder sleeve inlet temperature T
in w=55 DEG C, the water outlet temperature flowed out from cylinder sleeve is T
out w=85 DEG C.
Table two: initial conditions and computational chart
It is 220 days/year that UTILIZATION OF VESIDUAL HEAT IN Economy design condition elects working time in ship year as, and diesel engine oil consumption rate is 175g/kW
●h, diesel-fuel price is according to 6115 yuan/ton.
Table three: power engine cogeneration utilization system Economy computational chart peculiar to vessel
It should be noted that; although be described in detail the preferred embodiments of the present invention by reference to the accompanying drawings above; but the present invention is not limited only to above-mentioned embodiment; above-mentioned mode of execution is only schematic; be not restrictive, the person skilled of related domain is subject to enlightenment of the present invention, when not departing from present inventive concept and claims; can also make a lot of form, these all belong to protection scope of the present invention.
Claims (1)
1. power engine cogeneration method of comprehensive utilization peculiar to vessel, it is characterized in that, it comprises the following steps:
(1) flue gas evaporator is set on the discharge flue of heat-conducting oil furnace peculiar to vessel, flue gas evaporator adopts fin tube, flue gas evaporator shell side is by high-temperature flue gas, and flue gas evaporator tube side is by the power generation medium of afterheat generating system, and power generation medium and high-temperature flue gas carry out heat exchange heat absorption; The cylinder sleeve cooling circulating water of powerplant module peculiar to vessel enters shell-and-tube evaporator tube side simultaneously, carries out heat exchange with the power generation medium of the shell-and-tube evaporator shell side entering afterheat generating system; Described power generation medium adopts HFA 134a;
(2) high temperature and high pressure steam is become after the power generation medium after absorbing high-temperature flue gas waste heat and the power generation medium evaporation after shell-and-tube evaporator heat absorption, decompressor is sent into by pipeline, promote decompressor and export mechanical work, drive three phase induction generator generates electricity, generate electricity can for storage battery electric power storage or directly, described three phase induction generator adopts remanent magnetism self-excitation pattern, can from network operation;
(3) export the power generation medium after expansion work and enter condenser under the outside water be arranged on outside hull, under outside water, condenser utilizes the flowing of river or the relative ship side of seawater to power generation medium condensation, and power generation medium is condensed into liquid state;
(4) condensed power generation medium is divided into two-way after media supercharger under totally-enclosed water, and a road is got back to described flue gas evaporator and completed a power generation cycle and another road is got back to described shell-and-tube evaporator and completed a power generation cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510219726.9A CN104806333A (en) | 2015-04-30 | 2015-04-30 | Ship engine waste heat power generation comprehensive utilization method |
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| CN201510219726.9A CN104806333A (en) | 2015-04-30 | 2015-04-30 | Ship engine waste heat power generation comprehensive utilization method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837447A (en) * | 2017-03-15 | 2017-06-13 | 天津博帆科技发展有限公司 | A kind of fuel afterheat power/power generation all-in-one machine and its method of work |
| CN106988808A (en) * | 2017-03-03 | 2017-07-28 | 天津博帆科技发展有限公司 | A kind of powerplant module cooling peculiar to vessel and afterheat utilizing system and its Application way |
| CN107762561A (en) * | 2016-08-23 | 2018-03-06 | 吴茂盛 | Hydrodynamic force generating set |
| CN110388240A (en) * | 2018-04-18 | 2019-10-29 | 株式会社神户制钢所 | The setting method of heat-energy recovering apparatus and heat-energy recovering apparatus |
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| US20120285167A1 (en) * | 2006-11-15 | 2012-11-15 | Jon Horek | Heat recovery system and method |
| CN102713167A (en) * | 2010-01-21 | 2012-10-03 | 三菱重工业株式会社 | Waste heat recovery power generation device and ship with same |
| JP2012057501A (en) * | 2010-09-06 | 2012-03-22 | Mitsubishi Heavy Ind Ltd | Power plant facility, ship with the same, and method for operating power plant facility |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762561A (en) * | 2016-08-23 | 2018-03-06 | 吴茂盛 | Hydrodynamic force generating set |
| CN106988808A (en) * | 2017-03-03 | 2017-07-28 | 天津博帆科技发展有限公司 | A kind of powerplant module cooling peculiar to vessel and afterheat utilizing system and its Application way |
| CN106837447A (en) * | 2017-03-15 | 2017-06-13 | 天津博帆科技发展有限公司 | A kind of fuel afterheat power/power generation all-in-one machine and its method of work |
| CN110388240A (en) * | 2018-04-18 | 2019-10-29 | 株式会社神户制钢所 | The setting method of heat-energy recovering apparatus and heat-energy recovering apparatus |
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