CN102188829B - Injection enthalpy-increasing backheating evaporator - Google Patents
Injection enthalpy-increasing backheating evaporator Download PDFInfo
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- CN102188829B CN102188829B CN2011100876943A CN201110087694A CN102188829B CN 102188829 B CN102188829 B CN 102188829B CN 2011100876943 A CN2011100876943 A CN 2011100876943A CN 201110087694 A CN201110087694 A CN 201110087694A CN 102188829 B CN102188829 B CN 102188829B
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Abstract
The invention relates to an injection enthalpy-increasing backheating evaporator. The evaporator is provided with a pressure flash evaporator with a water spray nozzle for injection flash evaporation, and an indirect backheating condenser, a hot liquid water tank and a hot liquid pump which are arranged below the pressure flash evaporator in turn so as to form a thermal cycle in which a small amount of heat is needed to be supplemented, wherein the flash vapor outlet of the evaporator is communicated with a vapor inlet pipe of an injection enthalpy-increasing phase change booster water vapor heat pump; the vapor outlet of the heat pump is communicated with the vapor inlet of the condenser; the vapor outlet of the condenser is communicated with a vapor extraction pipe of a vacuum pump; and the heat pump consists of a vapor inlet chamber, a vapor-heated Laval spray pipe, a vapor-heated pressure expander and a volume-expanding pressure-reducing pipe. The condenser and the vacuum pump are used for generating evaporation vacuum, the vapor temperature and evaporation intensity are increased through pressure flash evaporation, the injection enthalpy-increasing phase change booster heat pump is used for increasing flash evaporation temperature and pressure, theoretical thermal efficiency is more than 80 percent, the evaporation ratio is more than 35, which is several times higher than that of the conventional multi-effect evaporator, a circulating water cooling system is not needed, and the evaporator can be used in processes such as evaporation, concentration, seawater desalination, sewage treatment and the like.
Description
(1) technical field: injection increases the enthalpy backheating evaporator, belongs to injector, evaporimeter, heat pump and heat-exchange apparatus etc.
(2) background technology: multi-effect evaporator is a kind of common equipment in Chemical Manufacture, desalinization, black liquid and the dirty waste water treatment process.Multi-effect evaporator is a kind of series devices of a plurality of evaporimeters, and its design principle is that the latent heat of vaporization of double evaporation-cooling is recycled.In certain scope, the progression of evaporimeter is more, and heat utilization rate is higher.But without how much taking turns progression, give birth to steam and always enter system with the steam state form, discharge system with the steam state form again.Usually the initial steam pressure of system is 0.5MPa, and corresponding steam temperature is 152 ℃, and heat content is 2745kj/kg; Exhaust steam pressure is-0.92MPa, and corresponding steam temperature is 42 ℃, and heat content is 2573kj/kg; The enthalpy difference of turnover system is 172kj/kg, heat utilization efficiency less than 8%.Not only so, also to consume the indirect steam condensation that a large amount of cooling waters will be discharged system.There is the people that one 24 of the Bay area large-scale sea water desalinating unit of effect is checked and examined abroad, the thermal efficiency of its second law only 4.3%.At present one ton of living steam of desalting seawater through multi-effect evaporation device can evaporate 8 tons of water, and namely evaporite ratio is 8, and the evaporite ratio less than 4 of the best multi-effect evaporator of domestic operation.If with 200 yuan, the cost of one ton of water of evaporation is 50 yuan in the price of present production steam per ton, this is best, and general cost is more than 70 yuan, and what have is then higher.Therefore, improving evaporation efficiency is the energy-saving and emission-reduction problem demanding prompt solutions.Improving the optimal approach of evaporation efficiency is that indirect steam is recycling, the recycling high-efficiency heat pump that needs, however because due to the principle, present mechanical compression type heat pump and the evaporation efficiency of jet heat pump all can not meet the demands.
(3) summary of the invention
Injection provided by the invention increases the enthalpy backheating evaporator, and purpose is exactly to improve the thermal efficiency of existing evaporimeter.The present invention seeks to by adopt spraying the cold liquid backheat of pressure flash, flash distillation that increases under enthalpy Phase Transformation Booster, the vacuum state and the mode of circulating and evaporating, the thermodynamic cycle that makes vapo(u)rization system form sealing realizes.
Technical scheme of the present invention is as follows: injection increases the enthalpy backheating evaporator, it is characterized in that:
1) establish pressure flash evaporimeter 1, following structure is arranged: circumferential uniform 1 above sprinkler head 1.5 on housing 1.4 interior edges, the housing appearance is equipped with the annular water chamber 1.3 of water inlet pipe 1.3a; Annular water chamber is communicated with sprinkler head feed tube 1.51, and provides press water to sprinkler head; The housing upper and lower is established respectively flash-off steam outlet 1.1 and cold liquid outlet 1.7; 2) establish to spray and increase enthalpy Phase Transformation Booster water vapour heat pump 4, following design is arranged: the above convergent-expansion type diffuser assembly 4.3 that ⅰ) establish the coaxial air chamber 4.1 that connects in turn, has above Laval nozzle assembly 4.2, a converging portion adding hot jacket to have to add hot jacket and volume-expanding pressure-reducing pipe 4.4; Wherein, add hot jacket and refer to respectively at the fixing heating plate of Laval nozzle 4.22 and diffuser converging portion 4.37 outer walls, and airtight the jet pipe heating jacket 4.26 that is connected with steam and converging portion heating jacket 4.36 are housed outside heating plate; ⅱ) Laval nozzle inlet steam pressure P
2aBe low pressure water vapor pressure, select indirect steam, general vapour and other low-grade water vapour herein; And inlet steam pressure P
2a/ outlet steam pressure P
2b2; ⅲ) outlet 3C this section Lx of place steam flow mass dryness fraction X＜1 from Laval nozzle exit face 2b to convergent-expansion type diffuser venturi; ⅳ) the pressure P in convergent-expansion type diffuser exit cross section
3b＜Laval nozzle inlet steam pressure P
2aⅴ) volume-expanding pressure-reducing pipe 4 adopts cylinder-circular cones-cylindrical, inlet-duct area S
4a/ discharge area S
4b3.3) establish indirect backheat condenser 2, following design is arranged: 1. in backheat condensing container 2.3, pass into the steam 2.2 of supercharging, have air intake 2.4, venthole 2.5 and condensed water discharge outlet 2.6, the product heat cal rod 2.1 that indirectly carries out heat exchange also is housed in the container; 2. parameter satisfies: t
b〉=t
1In+R the formula: t
bIncrease the exhaust temperature of enthalpy Phase Transformation Booster water vapour heat pump 4 for injection; t
1The temperature of-backheat condenser hydrothermal solution; The thermal resistance of R-backheat condenser 2.4) establish hydrothermal solution water tank 3, following structure is arranged: in water tank, be full of the hydrothermal solution 3.1 by the heating steam heating, and establish the dope outlet 3.3 that replenishes liquid pipe 3.2 and bottom.5) establish vavuum pump 5, with vacuum tube vavuum pump extraction steam pipe 5.1 is communicated with backheat condenser venthole 2.5; 6) above-mentioned each vapour road, unit also has following connection with vacuum tube: evaporimeter 1 steam (vapor) outlet 1.1 is communicated with the steam inlet pipe 4.11 that increases enthalpy phase transformation heat pump 4; Increasing enthalpy phase transformation heat pump 4 gland steam exhausters 4.44 is communicated with backheat condenser 2 air intakes 2.4; The following connection of above-mentioned each unit water pipe for water route: evaporimeter 1 water inlet pipe 1.3a is communicated with the outlet pipe of hydrothermal solution pump 7, and the inlet of hydrothermal solution pump 7 is communicated with hydrothermal solution water tank 3; The cold liquid of evaporimeter outlet 1.7 is communicated with condenser product heat cal rod 2.1 inlets, and condenser product heat cal rod 2.1 hydrothermal solutions export 2.7 and are communicated with hydrothermal solution water tank 3.
Beneficial effect of the present invention:
1) at first in the development that realizes the object of the invention, the water pressure flash principle of application is explained as follows.By the evaporation of water characteristic: see Fig. 1, parameter is G
1, t
1, P
1Hot water 1a pass into vaporization chamber 1d, through shower nozzle 1c atomization flash-evaporation, produce and to discharge parameter be Ps, ts, nG, is that " flash steam 1b and parameter are P
2, t
2, (1-n) G cold water 1e.The energy equation of being set up by Fig. 1 flash vaporization unit obtains following relational expression: is "=C (t1-t2+nt2)/n+ (P1-P2)/n ρ ... (A)
In the following formula (A): is " steam enthalpy; t
1, t
2With ts--water inlet, water outlet and vapor (steam) temperature; P
1, P
2And P
S--water inlet, water outlet and steam pressure; The n-evaporation of water is than the density c-specific heat of water of ρ-water; The G-flow.First on the right is by the heat content of the flash-off steam of temperature generation, claims the heating power enthalpy, and second on the right is the enthalpy that is changed into the heat energy generation by the pressure potential of water, claims the pressure enthalpy.Heat content is the state parameter of water vapour, and enthalpy difference represents the size of water vapour acting ability.For the reuse indirect steam, we need to know the gentle vapour pressure of the flash steam under different conditions, and wish that its value is the bigger the better.Table 1 provides as flash distillation hot water temperature t
1In the time of=90 ℃, the relation of flash distillation steam temperature ts and evaporite ratio n% and flash distillation hydraulic pressure Δ Ρ.
Table 1 flash distillation steam temperature table t
1=90 ℃
As can be drawn from Table 1: 1. under the state of the heating power flash distillation shown in the table 1, flash distillation steam temperature ts is significantly less than flash distillation water temperature t
1Evaporation process boiling point appreciation phenomenon that Here it is has affected the reuse of indirect steam just because of the existence of this phenomenon.2. the boiling point of evaporation process appreciates increases and increases rapidly with evaporite ratio, vacuum system is required also to improve rapidly, so single-stage evaporator should not adopt large evaporite ratio.3. in the situation of medium and small evaporite ratio, the mode that can improve flash distillation hydraulic pressure improves the flash distillation steam temperature, to fall the energy consumption of low-pressure steam backheat.2) this evaporimeter has utilized the function of water jet (seeing item 1.5) and indirect condensing (seeing item 2) to produce vacuum and has made the hydrothermal solution flash distillation; The boiling point that the mode that utilization is converted to heat energy with pressure potential reduces evaporation process appreciates, and improves a flash distillation steam temperature (see 5); The characteristic of utilizing injection to increase the enthalpy Phase Transformation Booster makes the flash steam supercharging, thereby reduces significantly the energy consumption (seeing item 4) of heat recovery heat pump; Utilize the cold liquid backheat of flash distillation (seeing item 2 and item 3), make system form the thermodynamic cycle of sealing.Wherein, Laval nozzle 4.2 inlet steam pressure P in the item 4
4.2aBe low pressure water vapor pressure Pi, and entrance is than the outlet steam pressure〉2, making Laval nozzle outlet steam flow is ultrasonic wet steam flow; Outlet 4.4C this section steam flow mass dryness fraction X of place＜1 from Laval nozzle exit face 4.2b to convergent-expansion type supersonic diffuser 4.4 venturis, just realize moist steam in evaporation and in the dehumidification process temperature, pressure constant, namely guarantee under Isothermal Condition, moist steam to be increased enthalpy; Convergent-expansion type supersonic diffuser outlet pressure P
4.4b＜low pressure water vapor pressure Pi, make supercharging after water vapour do not reflux; Volume-expanding pressure-reducing pipe outlet/inlet area〉3, equal decrease heat pump 4 energy consumptions of these parameter designing.3) thermal efficiency is high.System thermal efficiency is defined as the Qr-backheat latent heat of vaporization in η=(Qr-Qb)/Qr formula: press Fig. 2 Qr=nGr; The Qb-additional heat: press Fig. 2, Qb=NG (ib " is "), thus: η=1-(ib " is ") if/to get ts be 54 ℃ of t to r
bBe that 96 ℃ of corresponding is "=2595kj/kg ib "=2665kj/kg gets then η=97% of r=2500kj/kg.3) " ≈ 36 by definition m=nGr/nG Δ i less for consumption of cooling-water.Than low 20 times of existing multi-effect evaporator.
4) flow process is short, equipment is simple, and is therefore reliable without other moving component except water pump, reduced investment.The successful implementation of native system will cause the major transformation of evaporation energy-saving technology.
(4) description of drawings
Fig. 1 pressure flash device schematic diagram;
Fig. 2 system of the present invention forms and flow chart;
Fig. 3 sprays and increases one of enthalpy phase transformation water vapour heat pump 4 structure charts (single tube);
Fig. 4 sprays two (multitubes) that increase enthalpy phase transformation water vapour heat pump 4 structure charts;
A kind of structure chart of Fig. 5 pressure flash evaporimeter 1;
A kind of structure chart of sprinkler head 1.5 among Fig. 6 Fig. 5---rotational flow atomized spray injector 1.5 structure charts;
A kind of structure chart---the water jet blower with multiple diffuser ducts of Fig. 7 Fig. 2 intermediate pump 5.
(5) specific embodiment
See Fig. 2, present embodiment 1 sprays and increases the following composition of enthalpy backheating evaporator:
1) sees Fig. 5, pressure flash evaporimeter 1 structure that present embodiment arranges is as follows: circumferentially fill 1 above rotational flow atomized spray injector 1.5 on housing 1.4 interior edges, the housing outer surface dress is with the annular water chamber 1.3 of water inlet pipe 1.3a, and rotational flow atomized spray injector feed tube 1.51 is communicated with annular water chamber.Flash-off steam outlet 1.1, end socket 1.10 and demister 1.2 are established in the housing top; The sieve plate 1.6 that dabbles, the sieve plate that dabbles supporting 1.9, Taper Pipe 1.8 and cold liquid outlet 1.7 are established in the housing below.Wherein, rotational flow atomized spray injector 1.5 is (ZL89105926) disclosed structure of Chinese patent " large-flow aspirating multi-layer rotational flow atomized spray injector ", it now is known technology, here be summarized as follows: see Fig. 6, rotational flow atomized spray injector 1.5 comprise feed tube 1.51, large-diameter annual spin chamber 1.52, book wall convergent divergent channel 1.53 and a plurality of annular nozzle 1.54 that steam road in turn is communicated with, 1.55 and 1.56 and they and induction chamber 1.58 between multi-layer rotational flow and annular hydrojet runner.2) see Fig. 3, injection increases the 4 following formation of enthalpy Phase Transformation Booster water vapour heat pump: establish the air chamber 4.1 that is pressurized water vapour and be comprised of the steam inlet pipe 4.11 that is connected and fixed in turn, end socket 4.12, cylindrical chamber 4.13 and adpting flange 4.14.By 4.2 following compositions of a Laval nozzle assembly that add hot jacket: establish airtight jet pipe heating jacket 4.26 with jet pipe 4.22 and heating plate 4.23 airtight covers within it by the Laval nozzle 4.22 at center, the heating plate 4.23, the outside that are welded in the jet pipe outer wall; Into and out of two ends welded flange 4.21 and 4.24.Converging portion is by 4.3 following compositions of convergent-expansion type diffuser assembly that add hot jacket: by the convergence-convergent divergent channel 4.33 at center, be welded in the heating plate 4.35 of diffuser pipe converging portion 4.37 outer walls, with converging portion 4.37 and heating plate 4.35 airtight covers converging portion heating jacket 4.36 within it, converging portion heating jacket admission end is welded with flange 4.31 and the rear end is welded with closed loop 4.32.Cylinder-circular cone-cylindrical volume-expanding pressure-reducing pipe 4.4 is comprised of upper cover plate 4.41, cylinder 4.42, convergence pipe 4.43 and the pipe steam outlet pipe 4.44 of in turn welding.Diffuser pipe 4.33 ports of export stretch in volume-expanding pressure-reducing pipe 4.4 cylinders 4.42, and with welding manner diffuser assembly 4.3 and volume-expanding pressure-reducing pipe 4.4 are connected and fixed.Steam inlet pipe is connected with Laval nozzle assembly flange 4.21 with flange 4.14, and Laval nozzle assembly flange 4.24 is connected all with diffuser pipe flange 4.31 and is joined with bolts, and above-mentioned four parts form the coaxial integral body that is connected and fixed thus.Steam inlet 4.25 is located at jet pipe heating jacket 4.26 head ends, and condensation-water drain 4.34 is located at converging portion heating jacket 4.36 ends, between jet pipe heating jacket and the converging portion heating jacket steam channel 4.27 is arranged.Heating steam enters and is filled in the jet pipe heating jacket from steam inlet and is pressurized steam in the heating Laval nozzle, then heating steam enters in the converging portion heating jacket heating diffuser through steam channel and is pressurized steam, and condensed water is discharged from condensation-water drain 4.34.The each part mentioned above design parameter is as follows: 1. Laval nozzle 4.22 inlet steam pressure P
2aBe low pressure water vapor pressure, optional general vapour, waste vapour and low-grade water vapour.Laval nozzle inlet steam pressure P
2a/ outlet steam pressure P
2b2; 2. export 3C this section Lx of place steam flow mass dryness fraction X＜1 from Laval nozzle exit face 2b to convergent-expansion type supersonic diffuser venturi; 3. the pressure P of convergent-expansion type supersonic diffuser 4.33 outlets
3b＜Laval nozzle inlet steam pressure P
2a4. cylinder-circular cone-cylindrical volume-expanding pressure-reducing pipe 4.4 inlet-duct area S
4a/ volume-expanding pressure-reducing pipe discharge area S
4b3.3) see Fig. 2, if the following summary of following indirect backheat condenser 2(is condenser 2): 1. in condensing container 2.3, pass into the steam 2.2 that is condensed, have air intake 2.4, venthole 2.5 and condensed water discharge outlet 2.6, the product heat cal rod 2.1 that indirectly carries out heat exchange also is housed in the container.Aforementioned common indirect backheat condenser product is public offering product in the market.Pass into t
2Cold liquid is discharged t
1Hydrothermal solution.2. indirect backheat condenser 2 design parameters of the present invention need satisfy: t
b〉=t
1In+R the formula: t
bIncrease the exhaust temperature of enthalpy Phase Transformation Booster water vapour heat pump 4 for injection; t
1The temperature of-backheat condenser hydrothermal solution; The thermal resistance of R-backheat condenser 2.4) see Fig. 2, be full of the hydrothermal solution 3.1 by the heating steam heating in the hydrothermal solution water tank 3, and establish the dope outlet 3.3 that replenishes liquid pipe 3.2 and bottom.Also can select the commercially available prod.5) see Fig. 2, Fig. 7, present embodiment vavuum pump 5 adopts water-jet pump 5, can adopt Chinese patent " water jet blower with multiple diffuser ducts " now has been known technology (ZL00259988.0), here be summarized as follows: see Fig. 7, the anemostat 5.5 a plurality of in parallel that water-jet pump 5 establishes pressure hydroecium 5.2, be communicated with it and cooperate with (operating) water nozzle outside the (operating) water nozzle 5.3 of a plurality of parallel connections of mixing chamber 5.4 injection waters, mixing chamber mixes locular wall and opens exhaust tube 5.1.Water-jet pump 5 belows establish water tank 6 and outside water tank holding water pump 8 and pipeline be communicated with pressure hydroecium 5.2, the water that consists of circulation sprays vacuum system.6) see Fig. 2, above-mentioned each vapour road, unit also has following connection with vacuum tube: evaporimeter 1 steam (vapor) outlet 1.1 is communicated with the steam inlet pipe 4.11 that increases enthalpy phase transformation heat pump 4; Increasing enthalpy phase transformation heat pump 4 gland steam exhausters 4.44 is communicated with condenser 2 air intakes 2.4; Condenser 2 ventholes 2.5 are communicated with water-jet pump 5 exhaust tubes 5.1.The following connection of above-mentioned each unit water pipe for water route: evaporimeter 1 water inlet pipe 1.3a is communicated with the outlet pipe of hydrothermal solution pump 7, and the inlet of hydrothermal solution pump 7 is communicated with hydrothermal solution water tank 3; The cold liquid of evaporimeter outlet 1.7 is communicated with condenser product heat cal rod 2.1 inlets, and condenser product heat cal rod 2.1 hydrothermal solutions export and are communicated with hydrothermal solution water tank 3, the feed liquid circulating system of evaporimeter 1, condenser 3, hydrothermal solution case 3 and a sealing of water pump 7 formation.Above-mentioned valve system: increase the enthalpy steam pipework that increases that enthalpy phase transformation heat pump 4 adds hot jacket and establish steam valve F4, steam valve F5 is established on condenser 2 steam outlet pipe roads, and hydrothermal solution pump 7 water lines are established water valve F1.Hydrothermal solution water tank 3 has heating steam pipeline steam valve F
3.1, replenish liquid pipeline water valve F
3.2, dope discharge line water valve F
3.3Condenser 2 condensed water discharge pipe road water valve F
2
The course of work: 1. see Fig. 2, system closes water valve F1, steam valve F5 before starting, and then the hydrothermal solution 3.1 in the hydrothermal solution water tank 3 is heated to the temperature t of design point by heating steam
1Open F5, start vavuum pump 5, by exhaust tube 5.1 by condenser 2 with increase enthalpy phase transformation heat pump 4 evaporimeter 1 is drawn gas to the pressure P of design point
SHeat water valve F1, steam valve F4, starting hydrothermal solution pump 7, to make hydrothermal solution water tank 3 interior temperature be that the hydrothermal solution of t1 is sent into evaporimeter 1.2. see Fig. 5, Fig. 6, hydrothermal solution enters rotational flow atomized spray injector 1.5 by water inlet pipe 1.3a, annular water chamber 1.3, feed tube 1.51 and carries out spraying flash distillation with pressure, in housing 1.4, flash-off steam after a plurality of annular nozzles, multi-layer rotational flow and the annular hydrojet runner spraying flash distillation passes demister 1.2 and flows to top steam (vapor) outlet 1.1, and the cold liquid after the flash distillation falls into the cold liquid outlet 1.7 in below after the below dabbles sieve plate 1.6.3. see Fig. 1 and Fig. 2, the flash distillation result obtains temperature t s, pressure P s, heat content is " flash-off steam under the effect of vacuum pressure reduction, flow into the air chamber 4.1(that increases enthalpy phase transformation heat pump 4 from steam (vapor) outlet 1.1 and see Fig. 3); Meanwhile temperature is t
2The cold liquid of flash distillation then flow in the product heat cal rod 2.1 of condenser 2.In increasing enthalpy phase transformation heat pump 4, temperature is that the flash-off steam of ts is pressurized as temperature is the saturated vapor of tb=t1+R.4. temperature is that the saturated vapor of tb=t1+R is the cold liquid condensing of t2 by temperature in condenser 2, discharges the latent heat of vaporization, and cold liquid is reheated to t
1Temperature after being condensed is t
1The backheat steam of+R at first becomes the equality of temperature condensed water that temperature is t1+R, then sprays secondary flash distillation under the vacuum action at water, is cooled to once again the back pressure temperature t b of design, and the water vapour of secondary flash distillation is by vavuum pump 5 suction and condensations.Temperature and the flow of secondary flash-off steam depend on t
1The vacuum pressure of the temperature of+R and vavuum pump 5.But the evaporite ratio of secondary flash distillation affirms that less than 4% of the evaporation capacity of evaporimeter 1 in other words, evaporation 1T/h water only needs the 3T/h cooling water.5. see Fig. 7, water-jet pump 5 courses of work: the press water that is provided by water pump 8 passes into hydroecium 5.2, each nozzle 5.3 forms high-speed jet after all pressing, the secondary flash-off steam that suction exhaust tube 5.1 enters, in mixing chamber 5.4, become steam-water mixing stream, enter respectively each anemostat 5.5 supercharging, and then through voltage-stabiliser tube 5.7, rectifying tube 5.8 and water seal tail pipe 5.9 enter in the water tank 6 and recycle.
Embodiment 2: see Fig. 1-Fig. 2, and Fig. 4-Fig. 7,
Present embodiment has following different from embodiment 1 structure: see Fig. 4, adopt following injection to increase enthalpy Phase Transformation Booster water vapour heat pump 4A:1) be provided with three following compositions of Laval nozzle assembly 4.2A that add hot jacket: established airtight with three jet pipes and the three groups of airtight cover of heating plate multi nozzle heating jacket 4.26A within it, into and out of two ends welded flange 4.21A and 4.24A by three Laval nozzle 4.22A at center, the heating plate 4.23A, the outside that are welded in the jet pipe outer wall.2) converging portion is by three convergent-expansion type diffuser 4.3A following compositions that add hot jacket: by three convergence-convergent divergent channel 4.33A at center, be welded in the heating plate 4.35A of diffuser pipe converging portion outer wall, with three converging portion 4.37A and the three groups of airtight cover of heating plate 4.35A multitube converging portion heating jacket 4.36A within it, multitube converging portion heating jacket 4.36A admission end is welded with flange 4.31A and the rear end is welded with closed loop 4.32A.And establish steam inlet 4.25A, steam channel 4.27A, condensation-water drain 4.34A.Remainder and embodiment 1 are identical.
Claims (3)
1. injection increases the enthalpy backheating evaporator, it is characterized in that:
1) establish pressure flash evaporimeter (1), following structure is arranged: along circumferential uniform 1 above sprinkler head (1.5), the housing appearance is equipped with the annular water chamber (1.3) of water inlet pipe (1.3a) in housing; Annular water chamber is communicated with sprinkler head feed tube (1.51); The housing upper and lower is established respectively flash-off steam outlet (1.1) and cold liquid outlet (1.7);
2) establish to spray and increase enthalpy Phase Transformation Booster water vapour heat pump (4), following design is arranged: the above convergent-expansion type diffuser assembly (4.3) and the volume-expanding pressure-reducing pipe (4.4) that ⅰ) establish the coaxial air chamber (4.1) that connects in turn, have the above Laval nozzle assembly (4.2), the converging portion that add hot jacket to have to add hot jacket; Wherein, add hot jacket and refer to respectively at the fixing heating plate of Laval nozzle (4.22) and diffuser converging portion (4.37) outer wall, and airtight the jet pipe heating jacket (4.26) that is connected with steam and converging portion heating jacket (4.36) are housed outside heating plate; ⅱ) Laval nozzle inlet steam pressure P
2aBe low pressure water vapor pressure; And inlet steam pressure P
2a/ outlet steam pressure P
2b2; ⅲ) this section (Lx) steam flow mass dryness fraction X＜1 is located in outlet (3C) from Laval nozzle exit face (2b) to convergent-expansion type diffuser venturi; ⅳ) convergent-expansion type diffuser exit cross section pressure P
3b＜Laval nozzle inlet steam pressure P
2aⅴ) volume-expanding pressure-reducing pipe (4) adopts cylinder-circular cone-cylindrical, inlet-duct area S
4a/ discharge area S
4b3;
3) establish indirect backheat condenser (2), following design is arranged: the steam (2.2) that 1. in backheat condensing container (2.3), passes into supercharging, have air intake (2.4), venthole (2.5) and condensed water discharge outlet (2.6), the product heat cal rod (2.1) that indirectly carries out heat exchange also is housed in the container; 2. parameter satisfies: t
b〉=t
1In+R the formula: t
bIncrease the exhaust temperature of enthalpy Phase Transformation Booster water vapour heat pump (4) for injection; t
1The temperature of-backheat condenser hydrothermal solution; The thermal resistance of R-backheat condenser (2);
4) establish hydrothermal solution water tank (3), following structure is arranged: in water tank, be full of the hydrothermal solution (3.1) by the heating steam heating, and establish the dope outlet (3.3) that replenishes liquid pipe (3.2) and bottom;
5) establish vavuum pump (5), with vacuum tube vavuum pump extraction steam pipe (5.1) is communicated with backheat condenser venthole (2.5);
6) above-mentioned each vapour road, unit is with the following connection of vacuum tube: evaporimeter (1) steam (vapor) outlet (1.1) is communicated with the steam inlet pipe (4.11) that increases enthalpy phase transformation heat pump (4); Increasing enthalpy phase transformation heat pump (4) gland steam exhauster (4.44) is communicated with backheat condenser (2) air intake (2.4); The following connection of above-mentioned each unit water pipe for water route: evaporimeter water inlet pipe (1.3a) is communicated with the outlet pipe of hydrothermal solution pump (7), and the inlet of hydrothermal solution pump (7) is communicated with hydrothermal solution water tank (3); The cold liquid outlet of evaporimeter (1.7) is communicated with condenser product heat cal rod (2.1) inlet, and condenser product heat cal rod (2.1) hydrothermal solution outlet (2.7) is communicated with hydrothermal solution water tank (3).
2. by the described evaporimeter of claim 1, it is characterized in that described vavuum pump (5) adopts the water tank (6) of water-jet pump, below and the water pump (8) on the outer pipeline of case to form recirculated water injection vacuum system; The anemostat a plurality of in parallel (5.5) of establishing pressure hydroecium (5.2) in the water-jet pump (5), being communicated with it and cooperating with (operating) water nozzle outside the (operating) water nozzle (5.3) of a plurality of parallel connections of mixing chamber (5.4) injection water, mixing chamber mixes locular wall and opens exhaust tube (5.1).
3. by the described evaporimeter of claim 1, it is characterized in that described sprinkler head (1.5) adopts rotational flow atomized spray injector.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100876943A CN102188829B (en) | 2011-04-08 | 2011-04-08 | Injection enthalpy-increasing backheating evaporator |
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|---|---|---|---|
| CN2011100876943A CN102188829B (en) | 2011-04-08 | 2011-04-08 | Injection enthalpy-increasing backheating evaporator |
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| CN102188829A CN102188829A (en) | 2011-09-21 |
| CN102188829B true CN102188829B (en) | 2013-02-06 |
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| CN2011100876943A Expired - Fee Related CN102188829B (en) | 2011-04-08 | 2011-04-08 | Injection enthalpy-increasing backheating evaporator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102900368A (en) * | 2012-11-07 | 2013-01-30 | 摩尔动力(北京)技术股份有限公司 | Jet flow hole drilling machine |
| CN106403629A (en) * | 2016-11-28 | 2017-02-15 | 哈尔滨工大金涛科技股份有限公司 | Waste water waste heat evaporator |
| CN108553929B (en) * | 2018-06-15 | 2023-10-03 | 四川大学 | Atomizing nozzle for airflow type spray dryer |
| CN113266609B (en) * | 2021-06-02 | 2023-04-07 | 傅朝清 | Hydrothermal solution injection multi-unit vapor compression device and heat pump |
| CN114263933B (en) * | 2022-03-02 | 2022-07-08 | 成都中科翼能科技有限公司 | Combined type multi-channel diffuser of gas turbine and diffusion air inlet structure thereof |
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| EP0457303A1 (en) * | 1990-05-15 | 1991-11-21 | Konica Corporation | Apparatus for concentrating waste liquor from photographic process |
| CN2336872Y (en) * | 1998-09-10 | 1999-09-08 | 魏仕英 | Combined swirl atomized jet nozzle |
| CN1696587A (en) * | 2004-02-13 | 2005-11-16 | 魏仕英 | Vacuum cooling-water machine by water injection-jet propulsion |
| CN202015502U (en) * | 2011-04-08 | 2011-10-26 | 魏仕英 | Jet enthalpy increasing heat return type evaporator |
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- 2011-04-08 CN CN2011100876943A patent/CN102188829B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0457303A1 (en) * | 1990-05-15 | 1991-11-21 | Konica Corporation | Apparatus for concentrating waste liquor from photographic process |
| CN2336872Y (en) * | 1998-09-10 | 1999-09-08 | 魏仕英 | Combined swirl atomized jet nozzle |
| CN1696587A (en) * | 2004-02-13 | 2005-11-16 | 魏仕英 | Vacuum cooling-water machine by water injection-jet propulsion |
| CN202015502U (en) * | 2011-04-08 | 2011-10-26 | 魏仕英 | Jet enthalpy increasing heat return type evaporator |
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