CN105800868A - Efficient energy-saving sewage treatment device - Google Patents

Efficient energy-saving sewage treatment device Download PDF

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Publication number
CN105800868A
CN105800868A CN201610188571.1A CN201610188571A CN105800868A CN 105800868 A CN105800868 A CN 105800868A CN 201610188571 A CN201610188571 A CN 201610188571A CN 105800868 A CN105800868 A CN 105800868A
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China
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temperature
high temperature
low
expansion turbine
decompressor
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时建华
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00—General layout or general methods of operation of complete plants
    • F01K13/02—Controlling, e.g. stopping or starting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/12—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engines being mechanically coupled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
    • F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
    • F02G5/02—Profiting from waste heat of exhaust gases
    • F02G5/04—Profiting from waste heat of exhaust gases in combination with other waste heat from combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

The invention discloses an efficient energy-saving sewage treatment device.The device is improved from an automobile as a whole.The device comprises a carriage, sewage treatment equipment installed in the carriage, and an engine energy recycling system.The carriage comprises a plurality of reaction chambers.The sewage treatment equipment comprises a pump, a solid-liquid separation pond, an oil isolation pond, a biochemical pond, a filtering pond, a settlement pond, a clean water return pond and a sterilization pond which are sequentially connected through pipelines.Sewage is sequentially treated according to the sequence.The sewage treatment device has the advantages of being high in flowability, small in energy consumption, high in efficiency and the like.

Description

A kind of energy-efficient sewage-treatment plant
Technical field
The present invention relates to sewage treatment area, be specifically related to a kind of energy-efficient sewage-treatment plant.
Background technology
Water resources in china occupancy volume per person is only the 1/4 of world occupancy volume per person, in state-owned more than 400 hydropenia cities, wherein there is serious water shortage problem in more than 100 city.It is one of principal element currently affecting China's sustainable development that shortage of water resources and water pollute aggravation.In this context, sewage treatment industry becomes new industry, is in status of equal importance with tap water production, water supply, draining, Treated sewage reusing industry.
But, often there is the problems such as mobility is strong, energy consumption is high, efficiency is low in existing small region sewage treatment system, and equipment is embedded under earth's surface, is unfavorable for maintenance, after equipment breaks down, it has not been convenient to overhaul and change.
Summary of the invention
For the problems referred to above, the present invention provides a kind of energy-efficient sewage-treatment plant.
The purpose of the present invention realizes by the following technical solutions:
A kind of energy-efficient sewage-treatment plant, its entirety is formed by automobile improvement, it is characterized in that, including compartment, the sewage disposal device being arranged in compartment, engine power recovery system, described compartment includes multiple reative cell, described sewage disposal device includes the pump, solid-liquid separation tank, oil interceptor, biochemistry pool, filtering ponds, sedimentation tank, clear water back pool and the sterilization pool that are sequentially connected by pipeline, and sewage is sequentially carried out process by said sequence；Engine power recovery system is for reclaiming the energy of automobile engine tail gas, and it includes radiator, electromotor, backwater vaporizer, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery, inverter and converter, backpressure regulation blower fan；Described radiator is connected with electromotor, and the heat of electromotor is transferred on radiator by the logical supercooled water of radiator, and by the surface radiating of radiator；The tail gas of electromotor sequentially passes through backpressure regulation blower fan, high-temperature evaporator, cryogenic vaporizer cooling heel row to air；
High temperature heat-exchanging loop includes the high temperature circulation pump, high-temperature evaporator, high temperature multistage expansion turbine and the warm condenser that are sequentially connected, in high temperature heat-exchanging loop, the medium of flowing is water, high-temperature evaporator is arranged on the high-temperature tail gas pipeline after backpressure regulation blower fan, the WATER AS FLOW MEDIUM cooled down through warm condenser is squeezed in high-temperature evaporator by high temperature circulation pump, and the WATER AS FLOW MEDIUM after heating subsequently enters the acting of high temperature multistage expansion turbine；
Low-temperature heat exchange loop includes the cold cycle pump, cryogenic vaporizer, intermediate extraction superheater, low temperature multistage decompressor and the low-temperature condenser that are sequentially connected, in low-temperature heat exchange loop, the medium of flowing is R245fa, and cryogenic vaporizer is arranged on the low temperature exhaust gas pipeline after high-temperature evaporator；Being squeezed in cryogenic vaporizer through the medium R245fa of low-temperature condenser cooling by cold cycle pump, the WATER AS FLOW MEDIUM after heating enters the acting of low temperature multistage decompressor after intermediate extraction superheater heats；Intermediate extraction superheater is pipe heat exchanger, and heat source draws gas from the intergrade of high temperature multistage expansion turbine；Also include regulating valve, described adjustment valve is according to the R245fa Temperature Feedback after intermediate extraction superheater and the pressure feedback in high temperature multistage expansion turbine, for regulating the flow that intergrade is drawn gas, when the R245fa Temperature Feedback value after intermediate extraction superheater is more than or less than the R245fa temperature value after the intermediate extraction superheater set, automatically turn down or open the big aperture regulating valve, simultaneously when the pressure feedback value in high temperature multistage expansion turbine is less than the pressure atresia value in the high temperature multistage expansion turbine set, automatic blocking regulates valve and opens, intergrade after heating is drawn gas and is back to high temperature recuperated cycle loop；Distance L between high-temperature evaporator and cryogenic vaporizer is the 3/4 of exhaust pipe road overall length, and high temperature multistage expansion turbine is 3 grades of decompressors, and intergrade is drawn gas and taken from the 2nd grade of high temperature multistage expansion turbine；
High-temperature evaporator and cryogenic vaporizer all adopt screen formula-spiral heat exchange tube, and the first half section in gas inlet side adopts the screen formula heat exchanger tube being staggered in arrangement, and the second half section adopts spiral heat exchange tube；Described electromotor is additionally provided with backwater vaporizer to the CWR road of radiator, for reclaiming the heat of engine cooling water backwater, its cooling source takes from the centre tap of cold cycle pump, and the R245fa out of the centre tap after heated returns to the porch of intermediate extraction superheater；Described high-temperature evaporator and cryogenic vaporizer are integrally provided in the heat exchange housing of drum type brake, heat exchange housing is formed by bolt fastening by procapsid and back casing, the length of procapsid is identical with the horizontal length of screen formula heat exchanger tube, and the length of back casing is identical with the horizontal length of spiral heat exchange tube；Being provided with multiple vibrator on described screen formula heat exchanger tube, vibrator is powered by accumulator battery；The bottom of described procapsid is curved, is additionally provided with sewage draining exit at the minimum point place of curved bottom, discharges the dirt fallen that shakes on screen formula heat exchanger tube for regularly；
Shaft coupling is passed through coaxially connected between low temperature multistage decompressor and high temperature multistage expansion turbine, at the system start-up initial stage, R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, first low temperature multistage decompressor starts, drive high temperature multistage expansion turbine low speed to rotate in advance by shaft coupling simultaneously, play the startup pressure reducing high temperature multistage expansion turbine, shorten the effect of startup time；When system stops, the first coasting operation of high temperature multistage expansion turbine is slowed down, and drives low temperature multistage decompressor to slow down by shaft coupling simultaneously, to reduce the idling time of cryogenic expansion machine, plays the air blast friction reducing low temperature multistage decompressor, it is prevented that the effect that blade is overheated；
Also including accumulator battery, inverter and converter, one end of high temperature multistage expansion turbine is connected with accumulator battery, and accumulator battery is for storing the electric energy being transformed by the kinetic energy of decompressor；Accumulator battery is connected with inverter and converter, and inverter is for being alternating current by the DC inverter of accumulator, and converter is used for driving backpressure regulation blower fan and regulating its rotating speed；Backpressure regulation blower fan is for lowering and control the back pressure of electromotor, and during operation, the pressure at expulsion feedback by detecting regulates the rotating speed of backpressure regulation blower fan thus regulating back pressure in optimum.
Preferably, described low temperature multistage decompressor and high temperature multistage expansion turbine are respectively through high temperature inlet valve and the respective throttle flow of low temperature air inlet valve regulation, the high temperature inlet valve adopted and the stability of flow district of low temperature air inlet valve are 30%～100% metered flow, when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow more than 30%, high temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss, change exerting oneself of decompressor by regulating the rotating speed of high temperature circulation pump or cold cycle pump；When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow less than 30%, the rotating speed keeping high temperature circulation pump or cold cycle pump is constant, regulates exerting oneself of decompressor by controlling the aperture of high temperature inlet valve or low temperature inlet valve.
The beneficial effect of this sewage-treatment plant: devise the high efficiency sewage treatment facility that a kind of mobility is strong, after equipment breaks down, conveniently maintenance and replacing；Devise the exhaust gas recovery system of electromotor, the difference according to the evaporating temperature of the heat recovery demand of different temperatures section and medium and heat transfer characteristic, adopt different circulatory mediators in high temperature section with low-temperature zone, thus improve the heat exchange efficiency of system on the whole；By cold cycle pump centre tap relatively low for pressure being led to the backwater of backwater evaporator cools engine cooling water, it is possible to reclaim, reclaiming motor exhaust used heat, the heat cooling down water, and energy-saving effect is obvious simultaneously；Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency；By by part recover energy for by inverter and transducer drive backpressure regulation blower fan, and the rotating speed of the feedback regulation backpressure regulation blower fan according to exhaust back pressure, by backpressure regulation and energy regenerating integration while realizing without driven by external power blower fan, it is greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine is drawn gas, this part draw gas in high temperature multistage expansion turbine through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, avoid cold source energy, thus improving the whole efficiency of energy recycle device；Shaft coupling is passed through coaxially connected between low temperature multistage decompressor and high temperature multistage expansion turbine, initial stage in system start-up, owing to exhaust temperature is relatively low, R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, first low temperature multistage decompressor starts, drive high temperature multistage expansion turbine low speed to rotate in advance by shaft coupling simultaneously, so can effectively reduce the startup pressure of high temperature multistage expansion turbine, shorten the startup time, when system stops, the first coasting operation of high temperature multistage expansion turbine is slowed down, drive low temperature multistage decompressor to slow down by shaft coupling simultaneously, to reduce the idling time of cryogenic expansion machine, owing to the medium temperature in decompressor in stopped process is also higher, now primarily serve the air blast friction reducing low temperature multistage decompressor, prevent the effect that blade is overheated；According to the consideration of inlet valve control characteristic and restriction loss under different flow rate working conditions, devise a kind of rotating speed and control mode that inlet valve combines, reducing the stability being maintained with regulating of restriction loss.
Accompanying drawing explanation
The invention will be further described to utilize accompanying drawing, but the embodiment in accompanying drawing does not constitute any limitation of the invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to the following drawings.
Fig. 1 is the overall structure schematic diagram of this sewage-treatment plant；
Fig. 2 is the structural representation of this energy recycle device；
Fig. 3 is the side view of high-temperature evaporator and cryogenic vaporizer；
Fig. 4 is the front view of high-temperature evaporator and cryogenic vaporizer.
Accompanying drawing labelling: radiator-1；Electromotor-2；Warm condenser-3；Low-temperature condenser-4；High-temperature evaporator-5；Cryogenic vaporizer-6；High temperature multistage expansion turbine-7；Low temperature multistage decompressor-8；Backwater vaporizer-9；High temperature circulation pump-10；Cold cycle pump-11；Intermediate extraction superheater-12；Accumulator battery-13；Backpressure regulation blower fan-14；Inverter and converter-15；Regulate valve-16；Screen formula heat exchanger tube-17；Spiral heat exchange tube-18；Shaft coupling-19；Procapsid-20；Back casing-21；Bolt-22；Sewage draining exit-23；Compartment-24；Pump-25；Pipeline-26；Solid-liquid separation tank-27；Oil interceptor-28；Biochemistry pool-29；Filtering ponds-30；Sedimentation tank-31；Clear water back pool-32；Sterilization pool-33.
Detailed description of the invention
The invention will be further described with the following Examples.
Embodiment 1:
The energy-efficient sewage-treatment plant of one as shown in Figure 1, its entirety is formed by automobile improvement, including compartment 24, the sewage disposal device being arranged in compartment 24, engine power recovery system, described compartment 24 includes multiple reative cell, described sewage disposal device includes the pump 25, solid-liquid separation tank 27, oil interceptor 28, biochemistry pool 29, filtering ponds 30, sedimentation tank 31, clear water back pool 32 and the sterilization pool 33 that are sequentially connected by pipeline 26, and sewage is sequentially carried out process by said sequence.
As shown in Figure 2, engine power recovery system is for reclaiming the energy of automobile engine tail gas, and it includes radiator 1, electromotor 2, backwater vaporizer 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery 13, inverter and converter 15 and backpressure regulation blower fan 14.Radiator 1 is connected with electromotor 2, and radiator 1 leads to supercooled water to be transferred to the heat of electromotor 2 on radiator 1, and by the surface radiating of radiator 1.The tail gas of electromotor 2 discharges air after sequentially passing through backpressure regulation blower fan 14, high-temperature evaporator 5, cryogenic vaporizer 6 cooling.
High temperature heat-exchanging loop includes the high temperature circulation pump 10, high-temperature evaporator 5, high temperature multistage expansion turbine 7 and the warm condenser 3 that are sequentially connected, in high temperature heat-exchanging loop, the medium of flowing is water, high-temperature evaporator 5 is arranged on the high-temperature tail gas pipeline after backpressure regulation blower fan 14, the tail gas in order to cooling down high-temperature tail gas section is squeezed in high-temperature evaporator 5 by high temperature circulation pump 10 through the WATER AS FLOW MEDIUM of warm condenser 3 cooling, WATER AS FLOW MEDIUM after heating then passes through high temperature multistage expansion turbine 7 and does work, and converts heat energy into the mechanical energy of high temperature multistage expansion turbine 7.
Low-temperature heat exchange loop includes the cold cycle pump 11 being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature multistage decompressor 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, cryogenic vaporizer 6 is arranged on the low temperature exhaust gas pipeline after high-temperature evaporator 5 to reclaim the heat of tail gas further, squeezed in cryogenic vaporizer 6 through the medium R245fa of low-temperature condenser 6 cooling by cold cycle pump 11, WATER AS FLOW MEDIUM after heating is done work through low temperature multiple expansion engine 8 after intermediate extraction superheater 12, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it have been investigated that, in energy recycle device, use water as medium and by the R245fa effect as medium and differ, the evaporation of water temperature evaporating temperature than R245fa exceeds much, is therefore adapted in the tail gas section of high temperature and uses；And use R245fa as medium in the tail gas section of low temperature, it is more beneficial for its evaporation acting.It addition, this combination by both media when different pressure and temperatures uses, the heat exchange efficiency of system also can be improved on the whole.Intermediate extraction superheater 12 is pipe heat exchanger, heat source draws gas from the intergrade of high temperature multistage expansion turbine 7, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, it is to avoid cold source energy, thus improving the whole efficiency of energy recycle device.The concrete progression that draws gas can be determined according to the different condition ranges in two decompressors.nullAlso include regulating valve 16，Regulate valve 16 according to the R245fa Temperature Feedback after intermediate extraction superheater 12 and the pressure feedback in high temperature multistage expansion turbine 7，For regulating the flow that intergrade is drawn gas，When the R245fa Temperature Feedback value after intermediate extraction superheater 12 is more than or less than the R245fa temperature value after the intermediate extraction superheater 12 set，Automatically turn down or open the big aperture regulating valve 16，Simultaneously when the pressure feedback value in high temperature multistage expansion turbine 7 is less than the pressure atresia value in the high temperature multistage expansion turbine 7 set，Automatic blocking regulates valve 16 and opens greatly (namely forbidding that it continues out greatly)，To prevent exerting oneself of high temperature multistage expansion turbine 7 too low，R245fa temperature value after the intermediate extraction superheater 12 set and the pressure atresia value in the high temperature multistage expansion turbine 7 of setting are manually set according to different concrete conditions method by experiment，Intergrade after heating is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, take that the distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is exhaust pipe road overall length 3/4, high temperature multistage expansion turbine 7 is 3 grades of decompressors, and intergrade is drawn gas and taken from the 2nd grade of high temperature multistage expansion turbine.
As shown in Figure 3,4, consider the impurity in tail gas is not easy to cleaning and is susceptible to blocking after more how long using, and take into account heat exchange efficiency, high-temperature evaporator 5 and cryogenic vaporizer 6 all adopt the new structure of screen formula-spiral heat exchange tube, at the inlet side of tail gas, adopting the screen formula heat exchanger tube 17 being staggered in arrangement, so most tail gas impurity is blocked on screen formula heat exchanger tube 17, during cleaning easily, it is staggered in arrangement the flow resistance that also can effectively reduce tail gas simultaneously；And adopt spiral heat exchange tube 18 in the second half section, to strengthen flow perturbation raising heat exchange efficiency.The cooling source of warm condenser 3 and low-temperature condenser 4 can take from air-conditioning refrigerant, other low-temperature receiver can also be taken from, because the after-heat of this part is seldom, the medium in heat-exchanging loop is re-cooled to liquid prevents high temperature circulation pump 10 and cold cycle pump 11 from vaporizing as long as can meet.Described high-temperature evaporator 5 and cryogenic vaporizer 6 are integrally provided in the heat exchange housing of drum type brake, heat exchange housing is formed by bolt 22 fastening by procapsid 20 and back casing 21, the length of procapsid 20 is identical with the horizontal length of screen formula heat exchanger tube 17, and the length of back casing 21 is identical with the horizontal length of spiral heat exchange tube 18；Being provided with multiple vibrator (not shown) on described screen formula heat exchanger tube 17, vibrator is powered by accumulator battery 13；The bottom of described procapsid 20 is curved, is additionally provided with sewage draining exit 23 at the minimum point place of curved bottom, for regularly discharging the dirt fallen that shakes on screen formula heat exchanger tube 17.
Electromotor 2 to the CWR road of radiator 1 is additionally provided with backwater vaporizer 9, for reclaiming the heat of engine cooling water backwater, its cooling source takes from the centre tap of cold cycle pump 11, and the R245fa out of the centre tap after heated returns to the porch of intermediate extraction superheater 12.The centre tap of cold cycle pump 11 relatively low for pressure is led to the backwater of backwater evaporator cools engine cooling water, reclaiming the heat of cooling water backwater on the one hand well, comparing on the other hand individually to set up a circulation or draw cooling medium from the outlet of cold cycle pump 11 and high temperature circulation pump 10 has better energy-saving effect.
Shaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7, initial stage in system start-up, owing to exhaust temperature is relatively low, R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, first low temperature multistage decompressor 8 starts, drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, owing to the medium temperature in now high temperature multistage expansion turbine 7 is very low, and the length of blade of high temperature multistage expansion turbine 7 is little compared with the length of blade of low temperature multiple expansion engine 8, the air blast friction of blade is only small, almost can consider；When system stops, high temperature multistage expansion turbine 7 first coasting operation is slowed down, drive low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously, to reduce the idling time of cryogenic expansion machine 8, owing to the medium temperature in decompressor in stopped process is also higher, now primarily serve the air blast friction reducing low temperature multistage decompressor 8, it is prevented that the effect that blade is overheated.
One end of high temperature multistage expansion turbine 7 is connected with accumulator battery 13, and accumulator battery 13 is for storing the electric energy being transformed by decompressor kinetic energy.Convert energy into the technology of the electric energy of accumulator about decompressor, owing to prior art is very ripe, do not repeat them here.Accumulator battery 13 is connected with inverter and converter 15, and inverter is for being alternating current by the DC inverter of accumulator, and converter is used for driving backpressure regulation blower fan 14 and regulating its rotating speed.Energy recycle device can make the exhaust back pressure of electromotor 2 raise when the impact of electromotor 2 essentially consisting in engine exhaust by heater in system, and exhaust back pressure rising can cause that power consumption when waste gas is released cylinder by engine piston increases, therefore backpressure regulation blower fan 14 is set and can effectively lower and control the back pressure of electromotor 2, during operation, the rotating speed of backpressure regulation blower fan 14 is regulated thus regulating back pressure in optimum by the pressure at expulsion feedback detected, the advantage that this energy utilizing accumulator battery 13 itself has power supply that need not be external to drive the mode of blower fan simultaneously.
Low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7 regulate respective throttle flow respectively through high temperature inlet valve and low temperature air inlet valve (not shown).nullThe high temperature inlet valve adopted and the stability of flow district of low temperature air inlet valve are 30%～100% metered flow，No matter it is low-temperature heat exchange loop or high temperature heat-exchanging loop，The control of pump and the control of decompressor，First pass through pump and regulate the flow of working medium，Realize the working medium control in expander inlet place temperature，When flow changes, decompressor must be made adjusting accordingly and mate flow，If the operation of decompressor is not mated with flow，Not only can not maintain stable evaporating pressure，The operation of decompressor also cannot remain stable for，Characteristic according to high temperature inlet valve and low temperature inlet valve simultaneously，Adopt pressure to regulate and speed regulates the control mode matched: when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow more than 30%，High temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss，Exerting oneself of decompressor is changed by regulating the rotating speed of high temperature circulation pump 10 or cold cycle pump 11；When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow less than 30%, the control characteristic of inlet valve during due to low discharge is unstable, keep high temperature circulation pump 10 or cold cycle pump 11 rotating speed constant, regulate exerting oneself of decompressor by controlling the aperture of high temperature inlet valve or low temperature inlet valve.
In the sewage-treatment plant of this embodiment, devise the high efficiency sewage treatment facility that a kind of mobility is strong, after equipment breaks down, conveniently maintenance and replacing；Devise the exhaust gas recovery system of electromotor, the difference according to the evaporating temperature of the heat recovery demand of different temperatures section and medium and heat transfer characteristic, adopt different circulatory mediators in high temperature section with low-temperature zone, thus improve the heat exchange efficiency of system on the whole；The backwater of engine cooling water is cooled down, it is possible to reclaim, reclaiming motor exhaust used heat, the heat cooling down water simultaneously, and energy-saving effect is obvious by cold cycle pump centre tap relatively low for pressure is led to backwater vaporizer 9；Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency；By by part recover energy for driving backpressure regulation blower fan 14 by inverter and converter 15, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure, by backpressure regulation and energy regenerating integration while realizing without driven by external power blower fan, it is greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, avoid cold source energy, thus improving the whole efficiency of energy recycle device；nullShaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7，Initial stage in system start-up，Owing to exhaust temperature is relatively low，R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop，First low temperature multistage decompressor starts，Drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously，So can effectively reduce the startup pressure of high temperature multistage expansion turbine 7，Shorten the startup time，When system stops，High temperature multistage expansion turbine 7 first coasting operation is slowed down，Drive low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously，To reduce the idling time of cryogenic expansion machine 8，Owing to the medium temperature in decompressor in stopped process is also higher，Now primarily serve the air blast friction reducing low temperature multistage decompressor 8，Prevent the effect that blade is overheated；According to the consideration of inlet valve control characteristic and restriction loss under different flow rate working conditions, devise a kind of rotating speed and control mode that inlet valve combines, reducing the stability being maintained with regulating of restriction loss.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 3/4 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 is 3 grades of decompressors, intergrade is drawn gas and is taken from the 2nd grade of high temperature multistage expansion turbine 7, and heat recovery efficiency improves 4%, achieves beyond thought effect.
Embodiment 2:
The energy-efficient sewage-treatment plant of one as shown in Figure 1, its entirety is formed by automobile improvement, including compartment 24, the sewage disposal device being arranged in compartment 24, engine power recovery system, described compartment 24 includes multiple reative cell, described sewage disposal device includes the pump 25, solid-liquid separation tank 27, oil interceptor 28, biochemistry pool 29, filtering ponds 30, sedimentation tank 31, clear water back pool 32 and the sterilization pool 33 that are sequentially connected by pipeline 26, and sewage is sequentially carried out process by said sequence.
As shown in Figure 2, engine power recovery system is for reclaiming the energy of automobile engine tail gas, and it includes radiator 1, electromotor 2, backwater vaporizer 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery 13, inverter and converter 15 and backpressure regulation blower fan 14.Radiator 1 is connected with electromotor 2, and radiator 1 leads to supercooled water to be transferred to the heat of electromotor 2 on radiator 1, and by the surface radiating of radiator 1.The tail gas of electromotor 2 discharges air after sequentially passing through backpressure regulation blower fan 14, high-temperature evaporator 5, cryogenic vaporizer 6 cooling.
High temperature heat-exchanging loop includes the high temperature circulation pump 10, high-temperature evaporator 5, high temperature multistage expansion turbine 7 and the warm condenser 3 that are sequentially connected, in high temperature heat-exchanging loop, the medium of flowing is water, high-temperature evaporator 5 is arranged on the high-temperature tail gas pipeline after backpressure regulation blower fan 14, the tail gas in order to cooling down high-temperature tail gas section is squeezed in high-temperature evaporator 5 by high temperature circulation pump 10 through the WATER AS FLOW MEDIUM of warm condenser 3 cooling, WATER AS FLOW MEDIUM after heating then passes through high temperature multistage expansion turbine 7 and does work, and converts heat energy into the mechanical energy of high temperature multistage expansion turbine 7.
Low-temperature heat exchange loop includes the cold cycle pump 11 being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature multistage decompressor 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, cryogenic vaporizer 6 is arranged on the low temperature exhaust gas pipeline after high-temperature evaporator 5 to reclaim the heat of tail gas further, squeezed in cryogenic vaporizer 6 through the medium R245fa of low-temperature condenser 6 cooling by cold cycle pump 11, WATER AS FLOW MEDIUM after heating is done work through low temperature multiple expansion engine 8 after intermediate extraction superheater 12, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it have been investigated that, in energy recycle device, use water as medium and by the R245fa effect as medium and differ, the evaporation of water temperature evaporating temperature than R245fa exceeds much, is therefore adapted in the tail gas section of high temperature and uses；And use R245fa as medium in the tail gas section of low temperature, it is more beneficial for its evaporation acting.It addition, this combination by both media when different pressure and temperatures uses, the heat exchange efficiency of system also can be improved on the whole.Intermediate extraction superheater 12 is pipe heat exchanger, heat source draws gas from the intergrade of high temperature multistage expansion turbine 7, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, it is to avoid cold source energy, thus improving the whole efficiency of energy recycle device.The concrete progression that draws gas can be determined according to the different condition ranges in two decompressors.nullAlso include regulating valve 16，Regulate valve 16 according to the R245fa Temperature Feedback after intermediate extraction superheater 12 and the pressure feedback in high temperature multistage expansion turbine 7，For regulating the flow that intergrade is drawn gas，When the R245fa Temperature Feedback value after intermediate extraction superheater 12 is more than or less than the R245fa temperature value after the intermediate extraction superheater 12 set，Automatically turn down or open the big aperture regulating valve 16，Simultaneously when the pressure feedback value in high temperature multistage expansion turbine 7 is less than the pressure atresia value in the high temperature multistage expansion turbine 7 set，Automatic blocking regulates valve 16 and opens greatly (namely forbidding that it continues out greatly)，To prevent exerting oneself of high temperature multistage expansion turbine 7 too low，R245fa temperature value after the intermediate extraction superheater 12 set and the pressure atresia value in the high temperature multistage expansion turbine 7 of setting are manually set according to different concrete conditions method by experiment，Intergrade after heating is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, take that the distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is exhaust pipe road overall length 2/3, high temperature multistage expansion turbine 7 is 4 grades of decompressors, and intergrade is drawn gas and taken from the 2nd grade of high temperature multistage expansion turbine.
As shown in Figure 3,4, consider the impurity in tail gas is not easy to cleaning and is susceptible to blocking after more how long using, and take into account heat exchange efficiency, high-temperature evaporator 5 and cryogenic vaporizer 6 all adopt the new structure of screen formula-spiral heat exchange tube, at the inlet side of tail gas, adopting the screen formula heat exchanger tube 17 being staggered in arrangement, so most tail gas impurity is blocked on screen formula heat exchanger tube 17, during cleaning easily, it is staggered in arrangement the flow resistance that also can effectively reduce tail gas simultaneously；And adopt spiral heat exchange tube 18 in the second half section, to strengthen flow perturbation raising heat exchange efficiency.The cooling source of warm condenser 3 and low-temperature condenser 4 can take from air-conditioning refrigerant, other low-temperature receiver can also be taken from, because the after-heat of this part is seldom, the medium in heat-exchanging loop is re-cooled to liquid prevents high temperature circulation pump 10 and cold cycle pump 11 from vaporizing as long as can meet.Described high-temperature evaporator 5 and cryogenic vaporizer 6 are integrally provided in the heat exchange housing of drum type brake, heat exchange housing is formed by bolt 22 fastening by procapsid 20 and back casing 21, the length of procapsid 20 is identical with the horizontal length of screen formula heat exchanger tube 17, and the length of back casing 21 is identical with the horizontal length of spiral heat exchange tube 18；Being provided with multiple vibrator (not shown) on described screen formula heat exchanger tube 17, vibrator is powered by accumulator battery 13；The bottom of described procapsid 20 is curved, is additionally provided with sewage draining exit 23 at the minimum point place of curved bottom, for regularly discharging the dirt fallen that shakes on screen formula heat exchanger tube 17.
Electromotor 2 to the CWR road of radiator 1 is additionally provided with backwater vaporizer 9, for reclaiming the heat of engine cooling water backwater, its cooling source takes from the centre tap of cold cycle pump 11, and the R245fa out of the centre tap after heated returns to the porch of intermediate extraction superheater 12.The centre tap of cold cycle pump 11 relatively low for pressure is led to the backwater of backwater evaporator cools engine cooling water, reclaiming the heat of cooling water backwater on the one hand well, comparing on the other hand individually to set up a circulation or draw cooling medium from the outlet of cold cycle pump 11 and high temperature circulation pump 10 has better energy-saving effect.
Shaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7, initial stage in system start-up, owing to exhaust temperature is relatively low, R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, first low temperature multistage decompressor 8 starts, drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, owing to the medium temperature in now high temperature multistage expansion turbine 7 is very low, and the length of blade of high temperature multistage expansion turbine 7 is little compared with the length of blade of low temperature multiple expansion engine 8, the air blast friction of blade is only small, almost can consider；When system stops, high temperature multistage expansion turbine 7 first coasting operation is slowed down, drive low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously, to reduce the idling time of cryogenic expansion machine 8, owing to the medium temperature in decompressor in stopped process is also higher, now primarily serve the air blast friction reducing low temperature multistage decompressor 8, it is prevented that the effect that blade is overheated.
One end of high temperature multistage expansion turbine 7 is connected with accumulator battery 13, and accumulator battery 13 is for storing the electric energy being transformed by decompressor kinetic energy.Convert energy into the technology of the electric energy of accumulator about decompressor, owing to prior art is very ripe, do not repeat them here.Accumulator battery 13 is connected with inverter and converter 15, and inverter is for being alternating current by the DC inverter of accumulator, and converter is used for driving backpressure regulation blower fan 14 and regulating its rotating speed.Energy recycle device can make the exhaust back pressure of electromotor 2 raise when the impact of electromotor 2 essentially consisting in engine exhaust by heater in system, and exhaust back pressure rising can cause that power consumption when waste gas is released cylinder by engine piston increases, therefore backpressure regulation blower fan 14 is set and can effectively lower and control the back pressure of electromotor 2, during operation, the rotating speed of backpressure regulation blower fan 14 is regulated thus regulating back pressure in optimum by the pressure at expulsion feedback detected, the advantage that this energy utilizing accumulator battery 13 itself has power supply that need not be external to drive the mode of blower fan simultaneously.
Low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7 regulate respective throttle flow respectively through high temperature inlet valve and low temperature air inlet valve (not shown).nullThe high temperature inlet valve adopted and the stability of flow district of low temperature air inlet valve are 30%～100% metered flow，No matter it is low-temperature heat exchange loop or high temperature heat-exchanging loop，The control of pump and the control of decompressor，First pass through pump and regulate the flow of working medium，Realize the working medium control in expander inlet place temperature，When flow changes, decompressor must be made adjusting accordingly and mate flow，If the operation of decompressor is not mated with flow，Not only can not maintain stable evaporating pressure，The operation of decompressor also cannot remain stable for，Characteristic according to high temperature inlet valve and low temperature inlet valve simultaneously，Adopt pressure to regulate and speed regulates the control mode matched: when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow more than 30%，High temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss，Exerting oneself of decompressor is changed by regulating the rotating speed of high temperature circulation pump 10 or cold cycle pump 11；When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow less than 30%, the control characteristic of inlet valve during due to low discharge is unstable, keep high temperature circulation pump 10 or cold cycle pump 11 rotating speed constant, regulate exerting oneself of decompressor by controlling the aperture of high temperature inlet valve or low temperature inlet valve.
In the sewage-treatment plant of this embodiment, devise the high efficiency sewage treatment facility that a kind of mobility is strong, after equipment breaks down, conveniently maintenance and replacing；Devise the exhaust gas recovery system of electromotor, the difference according to the evaporating temperature of the heat recovery demand of different temperatures section and medium and heat transfer characteristic, adopt different circulatory mediators in high temperature section with low-temperature zone, thus improve the heat exchange efficiency of system on the whole；The backwater of engine cooling water is cooled down, it is possible to reclaim, reclaiming motor exhaust used heat, the heat cooling down water simultaneously, and energy-saving effect is obvious by cold cycle pump centre tap relatively low for pressure is led to backwater vaporizer 9；Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency；By by part recover energy for driving backpressure regulation blower fan 14 by inverter and converter 15, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure, by backpressure regulation and energy regenerating integration while realizing without driven by external power blower fan, it is greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, avoid cold source energy, thus improving the whole efficiency of energy recycle device；nullShaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7，Initial stage in system start-up，Owing to exhaust temperature is relatively low，R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop，First low temperature multistage decompressor starts，Drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously，So can effectively reduce the startup pressure of high temperature multistage expansion turbine 7，Shorten the startup time，When system stops，High temperature multistage expansion turbine 7 first coasting operation is slowed down，Drive low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously，To reduce the idling time of cryogenic expansion machine 8，Owing to the medium temperature in decompressor in stopped process is also higher，Now primarily serve the air blast friction reducing low temperature multistage decompressor 8，Prevent the effect that blade is overheated；According to the consideration of inlet valve control characteristic and restriction loss under different flow rate working conditions, devise a kind of rotating speed and control mode that inlet valve combines, reducing the stability being maintained with regulating of restriction loss.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 2/3 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 is 4 grades of decompressors, intergrade is drawn gas and is taken from the 2nd grade of high temperature multistage expansion turbine 7, and heat recovery efficiency improves 4.5%, achieves beyond thought effect.
Embodiment 3:
The energy-efficient sewage-treatment plant of one as shown in Figure 1, its entirety is formed by automobile improvement, including compartment 24, the sewage disposal device being arranged in compartment 24, engine power recovery system, described compartment 24 includes multiple reative cell, described sewage disposal device includes the pump 25, solid-liquid separation tank 27, oil interceptor 28, biochemistry pool 29, filtering ponds 30, sedimentation tank 31, clear water back pool 32 and the sterilization pool 33 that are sequentially connected by pipeline 26, and sewage is sequentially carried out process by said sequence.
As shown in Figure 2, engine power recovery system is for reclaiming the energy of automobile engine tail gas, and it includes radiator 1, electromotor 2, backwater vaporizer 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery 13, inverter and converter 15 and backpressure regulation blower fan 14.Radiator 1 is connected with electromotor 2, and radiator 1 leads to supercooled water to be transferred to the heat of electromotor 2 on radiator 1, and by the surface radiating of radiator 1.The tail gas of electromotor 2 discharges air after sequentially passing through backpressure regulation blower fan 14, high-temperature evaporator 5, cryogenic vaporizer 6 cooling.
High temperature heat-exchanging loop includes the high temperature circulation pump 10, high-temperature evaporator 5, high temperature multistage expansion turbine 7 and the warm condenser 3 that are sequentially connected, in high temperature heat-exchanging loop, the medium of flowing is water, high-temperature evaporator 5 is arranged on the high-temperature tail gas pipeline after backpressure regulation blower fan 14, the tail gas in order to cooling down high-temperature tail gas section is squeezed in high-temperature evaporator 5 by high temperature circulation pump 10 through the WATER AS FLOW MEDIUM of warm condenser 3 cooling, WATER AS FLOW MEDIUM after heating then passes through high temperature multistage expansion turbine 7 and does work, and converts heat energy into the mechanical energy of high temperature multistage expansion turbine 7.
Low-temperature heat exchange loop includes the cold cycle pump 11 being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature multistage decompressor 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, cryogenic vaporizer 6 is arranged on the low temperature exhaust gas pipeline after high-temperature evaporator 5 to reclaim the heat of tail gas further, squeezed in cryogenic vaporizer 6 through the medium R245fa of low-temperature condenser 6 cooling by cold cycle pump 11, WATER AS FLOW MEDIUM after heating is done work through low temperature multiple expansion engine 8 after intermediate extraction superheater 12, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it have been investigated that, in energy recycle device, use water as medium and by the R245fa effect as medium and differ, the evaporation of water temperature evaporating temperature than R245fa exceeds much, is therefore adapted in the tail gas section of high temperature and uses；And use R245fa as medium in the tail gas section of low temperature, it is more beneficial for its evaporation acting.It addition, this combination by both media when different pressure and temperatures uses, the heat exchange efficiency of system also can be improved on the whole.Intermediate extraction superheater 12 is pipe heat exchanger, heat source draws gas from the intergrade of high temperature multistage expansion turbine 7, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, it is to avoid cold source energy, thus improving the whole efficiency of energy recycle device.The concrete progression that draws gas can be determined according to the different condition ranges in two decompressors.nullAlso include regulating valve 16，Regulate valve 16 according to the R245fa Temperature Feedback after intermediate extraction superheater 12 and the pressure feedback in high temperature multistage expansion turbine 7，For regulating the flow that intergrade is drawn gas，When the R245fa Temperature Feedback value after intermediate extraction superheater 12 is more than or less than the R245fa temperature value after the intermediate extraction superheater 12 set，Automatically turn down or open the big aperture regulating valve 16，Simultaneously when the pressure feedback value in high temperature multistage expansion turbine 7 is less than the pressure atresia value in the high temperature multistage expansion turbine 7 set，Automatic blocking regulates valve 16 and opens greatly (namely forbidding that it continues out greatly)，To prevent exerting oneself of high temperature multistage expansion turbine 7 too low，R245fa temperature value after the intermediate extraction superheater 12 set and the pressure atresia value in the high temperature multistage expansion turbine 7 of setting are manually set according to different concrete conditions method by experiment，Intergrade after heating is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, take that the distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is exhaust pipe road overall length 1/2, high temperature multistage expansion turbine 7 is 5 grades of decompressors, and intergrade is drawn gas and taken from the 3rd level of high temperature multistage expansion turbine.
As shown in Figure 3,4, consider the impurity in tail gas is not easy to cleaning and is susceptible to blocking after more how long using, and take into account heat exchange efficiency, high-temperature evaporator 5 and cryogenic vaporizer 6 all adopt the new structure of screen formula-spiral heat exchange tube, at the inlet side of tail gas, adopting the screen formula heat exchanger tube 17 being staggered in arrangement, so most tail gas impurity is blocked on screen formula heat exchanger tube 17, during cleaning easily, it is staggered in arrangement the flow resistance that also can effectively reduce tail gas simultaneously；And adopt spiral heat exchange tube 18 in the second half section, to strengthen flow perturbation raising heat exchange efficiency.The cooling source of warm condenser 3 and low-temperature condenser 4 can take from air-conditioning refrigerant, other low-temperature receiver can also be taken from, because the after-heat of this part is seldom, the medium in heat-exchanging loop is re-cooled to liquid prevents high temperature circulation pump 10 and cold cycle pump 11 from vaporizing as long as can meet.Described high-temperature evaporator 5 and cryogenic vaporizer 6 are integrally provided in the heat exchange housing of drum type brake, heat exchange housing is formed by bolt 22 fastening by procapsid 20 and back casing 21, the length of procapsid 20 is identical with the horizontal length of screen formula heat exchanger tube 17, and the length of back casing 21 is identical with the horizontal length of spiral heat exchange tube 18；Being provided with multiple vibrator (not shown) on described screen formula heat exchanger tube 17, vibrator is powered by accumulator battery 13；The bottom of described procapsid 20 is curved, is additionally provided with sewage draining exit 23 at the minimum point place of curved bottom, for regularly discharging the dirt fallen that shakes on screen formula heat exchanger tube 17.
Electromotor 2 to the CWR road of radiator 1 is additionally provided with backwater vaporizer 9, for reclaiming the heat of engine cooling water backwater, its cooling source takes from the centre tap of cold cycle pump 11, and the R245fa out of the centre tap after heated returns to the porch of intermediate extraction superheater 12.The centre tap of cold cycle pump 11 relatively low for pressure is led to the backwater of backwater evaporator cools engine cooling water, reclaiming the heat of cooling water backwater on the one hand well, comparing on the other hand individually to set up a circulation or draw cooling medium from the outlet of cold cycle pump 11 and high temperature circulation pump 10 has better energy-saving effect.
Shaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7, initial stage in system start-up, owing to exhaust temperature is relatively low, R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, first low temperature multistage decompressor 8 starts, drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, owing to the medium temperature in now high temperature multistage expansion turbine 7 is very low, and the length of blade of high temperature multistage expansion turbine 7 is little compared with the length of blade of low temperature multiple expansion engine 8, the air blast friction of blade is only small, almost can consider；When system stops, high temperature multistage expansion turbine 7 first coasting operation is slowed down, drive low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously, to reduce the idling time of cryogenic expansion machine 8, owing to the medium temperature in decompressor in stopped process is also higher, now primarily serve the air blast friction reducing low temperature multistage decompressor 8, it is prevented that the effect that blade is overheated.
One end of high temperature multistage expansion turbine 7 is connected with accumulator battery 13, and accumulator battery 13 is for storing the electric energy being transformed by decompressor kinetic energy.Convert energy into the technology of the electric energy of accumulator about decompressor, owing to prior art is very ripe, do not repeat them here.Accumulator battery 13 is connected with inverter and converter 15, and inverter is for being alternating current by the DC inverter of accumulator, and converter is used for driving backpressure regulation blower fan 14 and regulating its rotating speed.Energy recycle device can make the exhaust back pressure of electromotor 2 raise when the impact of electromotor 2 essentially consisting in engine exhaust by heater in system, and exhaust back pressure rising can cause that power consumption when waste gas is released cylinder by engine piston increases, therefore backpressure regulation blower fan 14 is set and can effectively lower and control the back pressure of electromotor 2, during operation, the rotating speed of backpressure regulation blower fan 14 is regulated thus regulating back pressure in optimum by the pressure at expulsion feedback detected, the advantage that this energy utilizing accumulator battery 13 itself has power supply that need not be external to drive the mode of blower fan simultaneously.
Low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7 regulate respective throttle flow respectively through high temperature inlet valve and low temperature air inlet valve (not shown).nullThe high temperature inlet valve adopted and the stability of flow district of low temperature air inlet valve are 30%～100% metered flow，No matter it is low-temperature heat exchange loop or high temperature heat-exchanging loop，The control of pump and the control of decompressor，First pass through pump and regulate the flow of working medium，Realize the working medium control in expander inlet place temperature，When flow changes, decompressor must be made adjusting accordingly and mate flow，If the operation of decompressor is not mated with flow，Not only can not maintain stable evaporating pressure，The operation of decompressor also cannot remain stable for，Characteristic according to high temperature inlet valve and low temperature inlet valve simultaneously，Adopt pressure to regulate and speed regulates the control mode matched: when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow more than 30%，High temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss，Exerting oneself of decompressor is changed by regulating the rotating speed of high temperature circulation pump 10 or cold cycle pump 11；When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow less than 30%, the control characteristic of inlet valve during due to low discharge is unstable, keep high temperature circulation pump 10 or cold cycle pump 11 rotating speed constant, regulate exerting oneself of decompressor by controlling the aperture of high temperature inlet valve or low temperature inlet valve.
In the sewage-treatment plant of this embodiment, devise the high efficiency sewage treatment facility that a kind of mobility is strong, after equipment breaks down, conveniently maintenance and replacing；Devise the exhaust gas recovery system of electromotor, the difference according to the evaporating temperature of the heat recovery demand of different temperatures section and medium and heat transfer characteristic, adopt different circulatory mediators in high temperature section with low-temperature zone, thus improve the heat exchange efficiency of system on the whole；The backwater of engine cooling water is cooled down, it is possible to reclaim, reclaiming motor exhaust used heat, the heat cooling down water simultaneously, and energy-saving effect is obvious by cold cycle pump centre tap relatively low for pressure is led to backwater vaporizer 9；Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency；By by part recover energy for driving backpressure regulation blower fan 14 by inverter and converter 15, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure, by backpressure regulation and energy regenerating integration while realizing without driven by external power blower fan, it is greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, avoid cold source energy, thus improving the whole efficiency of energy recycle device；nullShaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7，Initial stage in system start-up，Owing to exhaust temperature is relatively low，R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop，First low temperature multistage decompressor starts，Drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously，So can effectively reduce the startup pressure of high temperature multistage expansion turbine 7，Shorten the startup time，When system stops，High temperature multistage expansion turbine 7 first coasting operation is slowed down，Drive low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously，To reduce the idling time of cryogenic expansion machine 8，Owing to the medium temperature in decompressor in stopped process is also higher，Now primarily serve the air blast friction reducing low temperature multistage decompressor 8，Prevent the effect that blade is overheated；According to the consideration of inlet valve control characteristic and restriction loss under different flow rate working conditions, devise a kind of rotating speed and control mode that inlet valve combines, reducing the stability being maintained with regulating of restriction loss.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 1/2 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 is 5 grades of decompressors, intergrade is drawn gas and is taken from the 3rd level of high temperature multistage expansion turbine 7, and heat recovery efficiency improves 5%, achieves beyond thought effect.
Embodiment 4:
The energy-efficient sewage-treatment plant of one as shown in Figure 1, its entirety is formed by automobile improvement, including compartment 24, the sewage disposal device being arranged in compartment 24, engine power recovery system, described compartment 24 includes multiple reative cell, described sewage disposal device includes the pump 25, solid-liquid separation tank 27, oil interceptor 28, biochemistry pool 29, filtering ponds 30, sedimentation tank 31, clear water back pool 32 and the sterilization pool 33 that are sequentially connected by pipeline 26, and sewage is sequentially carried out process by said sequence.
As shown in Figure 2, engine power recovery system is for reclaiming the energy of automobile engine tail gas, and it includes radiator 1, electromotor 2, backwater vaporizer 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery 13, inverter and converter 15 and backpressure regulation blower fan 14.Radiator 1 is connected with electromotor 2, and radiator 1 leads to supercooled water to be transferred to the heat of electromotor 2 on radiator 1, and by the surface radiating of radiator 1.The tail gas of electromotor 2 discharges air after sequentially passing through backpressure regulation blower fan 14, high-temperature evaporator 5, cryogenic vaporizer 6 cooling.
High temperature heat-exchanging loop includes the high temperature circulation pump 10, high-temperature evaporator 5, high temperature multistage expansion turbine 7 and the warm condenser 3 that are sequentially connected, in high temperature heat-exchanging loop, the medium of flowing is water, high-temperature evaporator 5 is arranged on the high-temperature tail gas pipeline after backpressure regulation blower fan 14, the tail gas in order to cooling down high-temperature tail gas section is squeezed in high-temperature evaporator 5 by high temperature circulation pump 10 through the WATER AS FLOW MEDIUM of warm condenser 3 cooling, WATER AS FLOW MEDIUM after heating then passes through high temperature multistage expansion turbine 7 and does work, and converts heat energy into the mechanical energy of high temperature multistage expansion turbine 7.
Low-temperature heat exchange loop includes the cold cycle pump 11 being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature multistage decompressor 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, cryogenic vaporizer 6 is arranged on the low temperature exhaust gas pipeline after high-temperature evaporator 5 to reclaim the heat of tail gas further, squeezed in cryogenic vaporizer 6 through the medium R245fa of low-temperature condenser 6 cooling by cold cycle pump 11, WATER AS FLOW MEDIUM after heating is done work through low temperature multiple expansion engine 8 after intermediate extraction superheater 12, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it have been investigated that, in energy recycle device, use water as medium and by the R245fa effect as medium and differ, the evaporation of water temperature evaporating temperature than R245fa exceeds much, is therefore adapted in the tail gas section of high temperature and uses；And use R245fa as medium in the tail gas section of low temperature, it is more beneficial for its evaporation acting.It addition, this combination by both media when different pressure and temperatures uses, the heat exchange efficiency of system also can be improved on the whole.Intermediate extraction superheater 12 is pipe heat exchanger, heat source draws gas from the intergrade of high temperature multistage expansion turbine 7, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, it is to avoid cold source energy, thus improving the whole efficiency of energy recycle device.The concrete progression that draws gas can be determined according to the different condition ranges in two decompressors.nullAlso include regulating valve 16，Regulate valve 16 according to the R245fa Temperature Feedback after intermediate extraction superheater 12 and the pressure feedback in high temperature multistage expansion turbine 7，For regulating the flow that intergrade is drawn gas，When the R245fa Temperature Feedback value after intermediate extraction superheater 12 is more than or less than the R245fa temperature value after the intermediate extraction superheater 12 set，Automatically turn down or open the big aperture regulating valve 16，Simultaneously when the pressure feedback value in high temperature multistage expansion turbine 7 is less than the pressure atresia value in the high temperature multistage expansion turbine 7 set，Automatic blocking regulates valve 16 and opens greatly (namely forbidding that it continues out greatly)，To prevent exerting oneself of high temperature multistage expansion turbine 7 too low，R245fa temperature value after the intermediate extraction superheater 12 set and the pressure atresia value in the high temperature multistage expansion turbine 7 of setting are manually set according to different concrete conditions method by experiment，Intergrade after heating is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, take that the distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is exhaust pipe road overall length 2/5, high temperature multistage expansion turbine 7 is 5 grades of decompressors, and intergrade is drawn gas and taken from the 2nd grade of high temperature multistage expansion turbine.
As shown in Figure 3,4, consider the impurity in tail gas is not easy to cleaning and is susceptible to blocking after more how long using, and take into account heat exchange efficiency, high-temperature evaporator 5 and cryogenic vaporizer 6 all adopt the new structure of screen formula-spiral heat exchange tube, at the inlet side of tail gas, adopting the screen formula heat exchanger tube 17 being staggered in arrangement, so most tail gas impurity is blocked on screen formula heat exchanger tube 17, during cleaning easily, it is staggered in arrangement the flow resistance that also can effectively reduce tail gas simultaneously；And adopt spiral heat exchange tube 18 in the second half section, to strengthen flow perturbation raising heat exchange efficiency.The cooling source of warm condenser 3 and low-temperature condenser 4 can take from air-conditioning refrigerant, other low-temperature receiver can also be taken from, because the after-heat of this part is seldom, the medium in heat-exchanging loop is re-cooled to liquid prevents high temperature circulation pump 10 and cold cycle pump 11 from vaporizing as long as can meet.Described high-temperature evaporator 5 and cryogenic vaporizer 6 are integrally provided in the heat exchange housing of drum type brake, heat exchange housing is formed by bolt 22 fastening by procapsid 20 and back casing 21, the length of procapsid 20 is identical with the horizontal length of screen formula heat exchanger tube 17, and the length of back casing 21 is identical with the horizontal length of spiral heat exchange tube 18；Being provided with multiple vibrator (not shown) on described screen formula heat exchanger tube 17, vibrator is powered by accumulator battery 13；The bottom of described procapsid 20 is curved, is additionally provided with sewage draining exit 23 at the minimum point place of curved bottom, for regularly discharging the dirt fallen that shakes on screen formula heat exchanger tube 17.
Electromotor 2 to the CWR road of radiator 1 is additionally provided with backwater vaporizer 9, for reclaiming the heat of engine cooling water backwater, its cooling source takes from the centre tap of cold cycle pump 11, and the R245fa out of the centre tap after heated returns to the porch of intermediate extraction superheater 12.The centre tap of cold cycle pump 11 relatively low for pressure is led to the backwater of backwater evaporator cools engine cooling water, reclaiming the heat of cooling water backwater on the one hand well, comparing on the other hand individually to set up a circulation or draw cooling medium from the outlet of cold cycle pump 11 and high temperature circulation pump 10 has better energy-saving effect.
Shaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7, initial stage in system start-up, owing to exhaust temperature is relatively low, R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, first low temperature multistage decompressor 8 starts, drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, owing to the medium temperature in now high temperature multistage expansion turbine 7 is very low, and the length of blade of high temperature multistage expansion turbine 7 is little compared with the length of blade of low temperature multiple expansion engine 8, the air blast friction of blade is only small, almost can consider；When system stops, high temperature multistage expansion turbine 7 first coasting operation is slowed down, drive low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously, to reduce the idling time of cryogenic expansion machine 8, owing to the medium temperature in decompressor in stopped process is also higher, now primarily serve the air blast friction reducing low temperature multistage decompressor 8, it is prevented that the effect that blade is overheated.
One end of high temperature multistage expansion turbine 7 is connected with accumulator battery 13, and accumulator battery 13 is for storing the electric energy being transformed by decompressor kinetic energy.Convert energy into the technology of the electric energy of accumulator about decompressor, owing to prior art is very ripe, do not repeat them here.Accumulator battery 13 is connected with inverter and converter 15, and inverter is for being alternating current by the DC inverter of accumulator, and converter is used for driving backpressure regulation blower fan 14 and regulating its rotating speed.Energy recycle device can make the exhaust back pressure of electromotor 2 raise when the impact of electromotor 2 essentially consisting in engine exhaust by heater in system, and exhaust back pressure rising can cause that power consumption when waste gas is released cylinder by engine piston increases, therefore backpressure regulation blower fan 14 is set and can effectively lower and control the back pressure of electromotor 2, during operation, the rotating speed of backpressure regulation blower fan 14 is regulated thus regulating back pressure in optimum by the pressure at expulsion feedback detected, the advantage that this energy utilizing accumulator battery 13 itself has power supply that need not be external to drive the mode of blower fan simultaneously.
Low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7 regulate respective throttle flow respectively through high temperature inlet valve and low temperature air inlet valve (not shown).nullThe high temperature inlet valve adopted and the stability of flow district of low temperature air inlet valve are 30%～100% metered flow，No matter it is low-temperature heat exchange loop or high temperature heat-exchanging loop，The control of pump and the control of decompressor，First pass through pump and regulate the flow of working medium，Realize the working medium control in expander inlet place temperature，When flow changes, decompressor must be made adjusting accordingly and mate flow，If the operation of decompressor is not mated with flow，Not only can not maintain stable evaporating pressure，The operation of decompressor also cannot remain stable for，Characteristic according to high temperature inlet valve and low temperature inlet valve simultaneously，Adopt pressure to regulate and speed regulates the control mode matched: when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow more than 30%，High temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss，Exerting oneself of decompressor is changed by regulating the rotating speed of high temperature circulation pump 10 or cold cycle pump 11；When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow less than 30%, the control characteristic of inlet valve during due to low discharge is unstable, keep high temperature circulation pump 10 or cold cycle pump 11 rotating speed constant, regulate exerting oneself of decompressor by controlling the aperture of high temperature inlet valve or low temperature inlet valve.
In the sewage-treatment plant of this embodiment, devise the high efficiency sewage treatment facility that a kind of mobility is strong, after equipment breaks down, conveniently maintenance and replacing；Devise the exhaust gas recovery system of electromotor, the difference according to the evaporating temperature of the heat recovery demand of different temperatures section and medium and heat transfer characteristic, adopt different circulatory mediators in high temperature section with low-temperature zone, thus improve the heat exchange efficiency of system on the whole；The backwater of engine cooling water is cooled down, it is possible to reclaim, reclaiming motor exhaust used heat, the heat cooling down water simultaneously, and energy-saving effect is obvious by cold cycle pump centre tap relatively low for pressure is led to backwater vaporizer 9；Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency；By by part recover energy for driving backpressure regulation blower fan 14 by inverter and converter 15, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure, by backpressure regulation and energy regenerating integration while realizing without driven by external power blower fan, it is greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, avoid cold source energy, thus improving the whole efficiency of energy recycle device；nullShaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7，Initial stage in system start-up，Owing to exhaust temperature is relatively low，R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop，First low temperature multistage decompressor starts，Drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously，So can effectively reduce the startup pressure of high temperature multistage expansion turbine 7，Shorten the startup time，When system stops，High temperature multistage expansion turbine 7 first coasting operation is slowed down，Drive low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously，To reduce the idling time of cryogenic expansion machine 8，Owing to the medium temperature in decompressor in stopped process is also higher，Now primarily serve the air blast friction reducing low temperature multistage decompressor 8，Prevent the effect that blade is overheated；According to the consideration of inlet valve control characteristic and restriction loss under different flow rate working conditions, devise a kind of rotating speed and control mode that inlet valve combines, reducing the stability being maintained with regulating of restriction loss.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 2/5 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 is 5 grades of decompressors, intergrade is drawn gas and is taken from the 2nd grade of high temperature multistage expansion turbine 7, and heat recovery efficiency improves 5.5%, achieves beyond thought effect.
Embodiment 5:
The energy-efficient sewage-treatment plant of one as shown in Figure 1, its entirety is formed by automobile improvement, including compartment 24, the sewage disposal device being arranged in compartment 24, engine power recovery system, described compartment 24 includes multiple reative cell, described sewage disposal device includes the pump 25, solid-liquid separation tank 27, oil interceptor 28, biochemistry pool 29, filtering ponds 30, sedimentation tank 31, clear water back pool 32 and the sterilization pool 33 that are sequentially connected by pipeline 26, and sewage is sequentially carried out process by said sequence.
As shown in Figure 2, engine power recovery system is for reclaiming the energy of automobile engine tail gas, and it includes radiator 1, electromotor 2, backwater vaporizer 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery 13, inverter and converter 15 and backpressure regulation blower fan 14.Radiator 1 is connected with electromotor 2, and radiator 1 leads to supercooled water to be transferred to the heat of electromotor 2 on radiator 1, and by the surface radiating of radiator 1.The tail gas of electromotor 2 discharges air after sequentially passing through backpressure regulation blower fan 14, high-temperature evaporator 5, cryogenic vaporizer 6 cooling.
High temperature heat-exchanging loop includes the high temperature circulation pump 10, high-temperature evaporator 5, high temperature multistage expansion turbine 7 and the warm condenser 3 that are sequentially connected, in high temperature heat-exchanging loop, the medium of flowing is water, high-temperature evaporator 5 is arranged on the high-temperature tail gas pipeline after backpressure regulation blower fan 14, the tail gas in order to cooling down high-temperature tail gas section is squeezed in high-temperature evaporator 5 by high temperature circulation pump 10 through the WATER AS FLOW MEDIUM of warm condenser 3 cooling, WATER AS FLOW MEDIUM after heating then passes through high temperature multistage expansion turbine 7 and does work, and converts heat energy into the mechanical energy of high temperature multistage expansion turbine 7.
Low-temperature heat exchange loop includes the cold cycle pump 11 being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature multistage decompressor 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, cryogenic vaporizer 6 is arranged on the low temperature exhaust gas pipeline after high-temperature evaporator 5 to reclaim the heat of tail gas further, squeezed in cryogenic vaporizer 6 through the medium R245fa of low-temperature condenser 6 cooling by cold cycle pump 11, WATER AS FLOW MEDIUM after heating is done work through low temperature multiple expansion engine 8 after intermediate extraction superheater 12, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it have been investigated that, in energy recycle device, use water as medium and by the R245fa effect as medium and differ, the evaporation of water temperature evaporating temperature than R245fa exceeds much, is therefore adapted in the tail gas section of high temperature and uses；And use R245fa as medium in the tail gas section of low temperature, it is more beneficial for its evaporation acting.It addition, this combination by both media when different pressure and temperatures uses, the heat exchange efficiency of system also can be improved on the whole.Intermediate extraction superheater 12 is pipe heat exchanger, heat source draws gas from the intergrade of high temperature multistage expansion turbine 7, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, it is to avoid cold source energy, thus improving the whole efficiency of energy recycle device.The concrete progression that draws gas can be determined according to the different condition ranges in two decompressors.nullAlso include regulating valve 16，Regulate valve 16 according to the R245fa Temperature Feedback after intermediate extraction superheater 12 and the pressure feedback in high temperature multistage expansion turbine 7，For regulating the flow that intergrade is drawn gas，When the R245fa Temperature Feedback value after intermediate extraction superheater 12 is more than or less than the R245fa temperature value after the intermediate extraction superheater 12 set，Automatically turn down or open the big aperture regulating valve 16，Simultaneously when the pressure feedback value in high temperature multistage expansion turbine 7 is less than the pressure atresia value in the high temperature multistage expansion turbine 7 set，Automatic blocking regulates valve 16 and opens greatly (namely forbidding that it continues out greatly)，To prevent exerting oneself of high temperature multistage expansion turbine 7 too low，R245fa temperature value after the intermediate extraction superheater 12 set and the pressure atresia value in the high temperature multistage expansion turbine 7 of setting are manually set according to different concrete conditions method by experiment，Intergrade after heating is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, take that the distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is exhaust pipe road overall length 2/7, high temperature multistage expansion turbine 7 is 6 grades of decompressors, and intergrade is drawn gas and taken from the 3rd level of high temperature multistage expansion turbine.
As shown in Figure 3,4, consider the impurity in tail gas is not easy to cleaning and is susceptible to blocking after more how long using, and take into account heat exchange efficiency, high-temperature evaporator 5 and cryogenic vaporizer 6 all adopt the new structure of screen formula-spiral heat exchange tube, at the inlet side of tail gas, adopting the screen formula heat exchanger tube 17 being staggered in arrangement, so most tail gas impurity is blocked on screen formula heat exchanger tube 17, during cleaning easily, it is staggered in arrangement the flow resistance that also can effectively reduce tail gas simultaneously；And adopt spiral heat exchange tube 18 in the second half section, to strengthen flow perturbation raising heat exchange efficiency.The cooling source of warm condenser 3 and low-temperature condenser 4 can take from air-conditioning refrigerant, other low-temperature receiver can also be taken from, because the after-heat of this part is seldom, the medium in heat-exchanging loop is re-cooled to liquid prevents high temperature circulation pump 10 and cold cycle pump 11 from vaporizing as long as can meet.Described high-temperature evaporator 5 and cryogenic vaporizer 6 are integrally provided in the heat exchange housing of drum type brake, heat exchange housing is formed by bolt 22 fastening by procapsid 20 and back casing 21, the length of procapsid 20 is identical with the horizontal length of screen formula heat exchanger tube 17, and the length of back casing 21 is identical with the horizontal length of spiral heat exchange tube 18；Being provided with multiple vibrator (not shown) on described screen formula heat exchanger tube 17, vibrator is powered by accumulator battery 13；The bottom of described procapsid 20 is curved, is additionally provided with sewage draining exit 23 at the minimum point place of curved bottom, for regularly discharging the dirt fallen that shakes on screen formula heat exchanger tube 17.
Electromotor 2 to the CWR road of radiator 1 is additionally provided with backwater vaporizer 9, for reclaiming the heat of engine cooling water backwater, its cooling source takes from the centre tap of cold cycle pump 11, and the R245fa out of the centre tap after heated returns to the porch of intermediate extraction superheater 12.The centre tap of cold cycle pump 11 relatively low for pressure is led to the backwater of backwater evaporator cools engine cooling water, reclaiming the heat of cooling water backwater on the one hand well, comparing on the other hand individually to set up a circulation or draw cooling medium from the outlet of cold cycle pump 11 and high temperature circulation pump 10 has better energy-saving effect.
Shaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7, initial stage in system start-up, owing to exhaust temperature is relatively low, R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, first low temperature multistage decompressor 8 starts, drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, owing to the medium temperature in now high temperature multistage expansion turbine 7 is very low, and the length of blade of high temperature multistage expansion turbine 7 is little compared with the length of blade of low temperature multiple expansion engine 8, the air blast friction of blade is only small, almost can consider；When system stops, high temperature multistage expansion turbine 7 first coasting operation is slowed down, drive low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously, to reduce the idling time of cryogenic expansion machine 8, owing to the medium temperature in decompressor in stopped process is also higher, now primarily serve the air blast friction reducing low temperature multistage decompressor 8, it is prevented that the effect that blade is overheated.
One end of high temperature multistage expansion turbine 7 is connected with accumulator battery 13, and accumulator battery 13 is for storing the electric energy being transformed by decompressor kinetic energy.Convert energy into the technology of the electric energy of accumulator about decompressor, owing to prior art is very ripe, do not repeat them here.Accumulator battery 13 is connected with inverter and converter 15, and inverter is for being alternating current by the DC inverter of accumulator, and converter is used for driving backpressure regulation blower fan 14 and regulating its rotating speed.Energy recycle device can make the exhaust back pressure of electromotor 2 raise when the impact of electromotor 2 essentially consisting in engine exhaust by heater in system, and exhaust back pressure rising can cause that power consumption when waste gas is released cylinder by engine piston increases, therefore backpressure regulation blower fan 14 is set and can effectively lower and control the back pressure of electromotor 2, during operation, the rotating speed of backpressure regulation blower fan 14 is regulated thus regulating back pressure in optimum by the pressure at expulsion feedback detected, the advantage that this energy utilizing accumulator battery 13 itself has power supply that need not be external to drive the mode of blower fan simultaneously.
Low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7 regulate respective throttle flow respectively through high temperature inlet valve and low temperature air inlet valve (not shown).nullThe high temperature inlet valve adopted and the stability of flow district of low temperature air inlet valve are 30%～100% metered flow，No matter it is low-temperature heat exchange loop or high temperature heat-exchanging loop，The control of pump and the control of decompressor，First pass through pump and regulate the flow of working medium，Realize the working medium control in expander inlet place temperature，When flow changes, decompressor must be made adjusting accordingly and mate flow，If the operation of decompressor is not mated with flow，Not only can not maintain stable evaporating pressure，The operation of decompressor also cannot remain stable for，Characteristic according to high temperature inlet valve and low temperature inlet valve simultaneously，Adopt pressure to regulate and speed regulates the control mode matched: when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow more than 30%，High temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss，Exerting oneself of decompressor is changed by regulating the rotating speed of high temperature circulation pump 10 or cold cycle pump 11；When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow less than 30%, the control characteristic of inlet valve during due to low discharge is unstable, keep high temperature circulation pump 10 or cold cycle pump 11 rotating speed constant, regulate exerting oneself of decompressor by controlling the aperture of high temperature inlet valve or low temperature inlet valve.
In the sewage-treatment plant of this embodiment, devise the high efficiency sewage treatment facility that a kind of mobility is strong, after equipment breaks down, conveniently maintenance and replacing；Devise the exhaust gas recovery system of electromotor, the difference according to the evaporating temperature of the heat recovery demand of different temperatures section and medium and heat transfer characteristic, adopt different circulatory mediators in high temperature section with low-temperature zone, thus improve the heat exchange efficiency of system on the whole；The backwater of engine cooling water is cooled down, it is possible to reclaim, reclaiming motor exhaust used heat, the heat cooling down water simultaneously, and energy-saving effect is obvious by cold cycle pump centre tap relatively low for pressure is led to backwater vaporizer 9；Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency；By by part recover energy for driving backpressure regulation blower fan 14 by inverter and converter 15, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure, by backpressure regulation and energy regenerating integration while realizing without driven by external power blower fan, it is greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, avoid cold source energy, thus improving the whole efficiency of energy recycle device；nullShaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7，Initial stage in system start-up，Owing to exhaust temperature is relatively low，R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop，First low temperature multistage decompressor starts，Drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously，So can effectively reduce the startup pressure of high temperature multistage expansion turbine 7，Shorten the startup time，When system stops，High temperature multistage expansion turbine 7 first coasting operation is slowed down，Drive low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously，To reduce the idling time of cryogenic expansion machine 8，Owing to the medium temperature in decompressor in stopped process is also higher，Now primarily serve the air blast friction reducing low temperature multistage decompressor 8，Prevent the effect that blade is overheated；According to the consideration of inlet valve control characteristic and restriction loss under different flow rate working conditions, devise a kind of rotating speed and control mode that inlet valve combines, reducing the stability being maintained with regulating of restriction loss.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 2/7 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 is 6 grades of decompressors, intergrade is drawn gas and is taken from the 3rd level of high temperature multistage expansion turbine 7, and heat recovery efficiency improves 6%, achieves beyond thought effect.
Finally should be noted that; above example is only in order to illustrate technical scheme; but not limiting the scope of the invention; although having made to explain to the present invention with reference to preferred embodiment; it will be understood by those within the art that; technical scheme can be modified or equivalent replacement, without deviating from the spirit and scope of technical solution of the present invention.

Claims (2)

1. an energy-efficient sewage-treatment plant, its entirety is formed by automobile improvement, it is characterized in that, including compartment, the sewage disposal device being arranged in compartment, engine power recovery system, described compartment includes multiple reative cell, described sewage disposal device includes the pump, solid-liquid separation tank, oil interceptor, biochemistry pool, filtering ponds, sedimentation tank, clear water back pool and the sterilization pool that are sequentially connected by pipeline, and sewage is sequentially carried out process by said sequence；Engine power recovery system is for reclaiming the energy of automobile engine tail gas, and it includes radiator, electromotor, backwater vaporizer, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery, inverter and converter, backpressure regulation blower fan；Described radiator is connected with electromotor, and the heat of electromotor is transferred on radiator by the logical supercooled water of radiator, and by the surface radiating of radiator；The tail gas of electromotor sequentially passes through backpressure regulation blower fan, high-temperature evaporator, cryogenic vaporizer cooling heel row to air；
High temperature heat-exchanging loop includes the high temperature circulation pump, high-temperature evaporator, high temperature multistage expansion turbine and the warm condenser that are sequentially connected, in high temperature heat-exchanging loop, the medium of flowing is water, high-temperature evaporator is arranged on the high-temperature tail gas pipeline after backpressure regulation blower fan, the WATER AS FLOW MEDIUM cooled down through warm condenser is squeezed in high-temperature evaporator by high temperature circulation pump, and the WATER AS FLOW MEDIUM after heating subsequently enters the acting of high temperature multistage expansion turbine；
Low-temperature heat exchange loop includes the cold cycle pump, cryogenic vaporizer, intermediate extraction superheater, low temperature multistage decompressor and the low-temperature condenser that are sequentially connected, in low-temperature heat exchange loop, the medium of flowing is R245fa, and cryogenic vaporizer is arranged on the low temperature exhaust gas pipeline after high-temperature evaporator；Being squeezed in cryogenic vaporizer through the medium R245fa of low-temperature condenser cooling by cold cycle pump, the WATER AS FLOW MEDIUM after heating enters the acting of low temperature multistage decompressor after intermediate extraction superheater heats；Intermediate extraction superheater is pipe heat exchanger, and heat source draws gas from the intergrade of high temperature multistage expansion turbine；Also include regulating valve, described adjustment valve is according to the R245fa Temperature Feedback after intermediate extraction superheater and the pressure feedback in high temperature multistage expansion turbine, for regulating the flow that intergrade is drawn gas, when the R245fa Temperature Feedback value after intermediate extraction superheater is more than or less than the R245fa temperature value after the intermediate extraction superheater set, automatically turn down or open the big aperture regulating valve, simultaneously when the pressure feedback value in high temperature multistage expansion turbine is less than the pressure atresia value in the high temperature multistage expansion turbine set, automatic blocking regulates valve and opens, intergrade after heating is drawn gas and is back to high temperature recuperated cycle loop；Distance L between high-temperature evaporator and cryogenic vaporizer is the 3/4 of exhaust pipe road overall length, and high temperature multistage expansion turbine is 3 grades of decompressors, and intergrade is drawn gas and taken from the 2nd grade of high temperature multistage expansion turbine；
High-temperature evaporator and cryogenic vaporizer all adopt screen formula-spiral heat exchange tube, and the first half section in gas inlet side adopts the screen formula heat exchanger tube being staggered in arrangement, and the second half section adopts spiral heat exchange tube；Described electromotor is additionally provided with backwater vaporizer to the CWR road of radiator, for reclaiming the heat of engine cooling water backwater, its cooling source takes from the centre tap of cold cycle pump, and the R245fa out of the centre tap after heated returns to the porch of intermediate extraction superheater；Described high-temperature evaporator and cryogenic vaporizer are integrally provided in the heat exchange housing of drum type brake, heat exchange housing is formed by bolt fastening by procapsid and back casing, the length of procapsid is identical with the horizontal length of screen formula heat exchanger tube, and the length of back casing is identical with the horizontal length of spiral heat exchange tube；Being provided with multiple vibrator on described screen formula heat exchanger tube, vibrator is powered by accumulator battery；The bottom of described procapsid is curved, is additionally provided with sewage draining exit at the minimum point place of curved bottom, discharges the dirt fallen that shakes on screen formula heat exchanger tube for regularly；
Shaft coupling is passed through coaxially connected between low temperature multistage decompressor and high temperature multistage expansion turbine, at the system start-up initial stage, R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, first low temperature multistage decompressor starts, drive high temperature multistage expansion turbine low speed to rotate in advance by shaft coupling simultaneously, play the startup pressure reducing high temperature multistage expansion turbine, shorten the effect of startup time；When system stops, the first coasting operation of high temperature multistage expansion turbine is slowed down, and drives low temperature multistage decompressor to slow down by shaft coupling simultaneously, to reduce the idling time of cryogenic expansion machine, plays the air blast friction reducing low temperature multistage decompressor, it is prevented that the effect that blade is overheated；
Also including accumulator battery, inverter and converter, one end of high temperature multistage expansion turbine is connected with accumulator battery, and accumulator battery is for storing the electric energy being transformed by the kinetic energy of decompressor；Accumulator battery is connected with inverter and converter, and inverter is for being alternating current by the DC inverter of accumulator, and converter is used for driving backpressure regulation blower fan and regulating its rotating speed；Backpressure regulation blower fan is for lowering and control the back pressure of electromotor, and during operation, the pressure at expulsion feedback by detecting regulates the rotating speed of backpressure regulation blower fan thus regulating back pressure in optimum.
2. the energy-efficient sewage-treatment plant of one according to claim 1, it is characterized in that, described low temperature multistage decompressor and high temperature multistage expansion turbine are respectively through high temperature inlet valve and the respective throttle flow of low temperature air inlet valve regulation, the high temperature inlet valve adopted and the stability of flow district of low temperature air inlet valve are 30%～100% metered flow, when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow more than 30%, high temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss, exerting oneself of decompressor is changed by regulating the rotating speed of high temperature circulation pump or cold cycle pump；When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow less than 30%, the rotating speed keeping high temperature circulation pump or cold cycle pump is constant, regulates exerting oneself of decompressor by controlling the aperture of high temperature inlet valve or low temperature inlet valve.
CN201610188571.1A 2016-03-30 2016-03-30 Efficient energy-saving sewage treatment device Pending CN105800868A (en)

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* Cited by examiner, † Cited by third party
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CN107472112A (en) * 2017-09-04 2017-12-15 福建戎堃科技有限公司 A kind of portable catering vehicle
CN112302950A (en) * 2020-10-30 2021-02-02 吉林鑫瑞控股集团有限责任公司 Sewage source heat pump

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CN103711555A (en) * 2013-12-27 2014-04-09 天津大学 Internal combustion engine waste heat double-circuit gradient utilization system
CN103964636A (en) * 2014-04-30 2014-08-06 江苏大恒环保电气科技股份有限公司 Mobile domestic sewage treating device
CN104265502A (en) * 2014-07-25 2015-01-07 天津大学 Combined-type diesel engine waste heat energy recycling system

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Publication number Priority date Publication date Assignee Title
CN102505980A (en) * 2011-11-02 2012-06-20 天津大学 Classified recovery system of waste heat of engine
CN103644081A (en) * 2013-11-28 2014-03-19 华北电力大学 Wind power generation, thermal power generation and compressed air energy storage integrated power generation system
CN103711555A (en) * 2013-12-27 2014-04-09 天津大学 Internal combustion engine waste heat double-circuit gradient utilization system
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107472112A (en) * 2017-09-04 2017-12-15 福建戎堃科技有限公司 A kind of portable catering vehicle
CN112302950A (en) * 2020-10-30 2021-02-02 吉林鑫瑞控股集团有限责任公司 Sewage source heat pump

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