CN103961894A - Solid-liquid mixed high-temperature solution waste heat recycling and utilizing device and method - Google Patents
Solid-liquid mixed high-temperature solution waste heat recycling and utilizing device and method Download PDFInfo
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Abstract
The invention discloses a solid-liquid mixed high-temperature solution waste heat recycling and utilizing device which comprises a material inlet, a first-stage flash evaporation system, a second-stage flash evaporation system, a slagging tank, an impurity pump and a material outlet, wherein the material is formed in a first-stage flash evaporation tank; the bottom of a first-stage gas-solid separator is connected with the slagging tank through a first-stage slagging pipeline; the first-stage flash evaporation tank is connected with a second-stage flash evaporation tank; the second-stage flash evaporation tank is connected with a second-stage gas-solid separator; the second-stage gas-solid separator is connected with the slagging tank through a second-stage slagging pipeline; a pipeline which is connected to one end of the impurity pump is arranged at the bottom of the second-stage flash evaporation tank; the other end of the impurity pump is connected with the material outlet. The invention further provides a solid-liquid mixed high-temperature solution waste heat recycling and utilizing method. According to the device and the method, as the heat of a corncob boiling liquid is effectively utilized in a gradient manner in a two-stage flash evaporation manner, the utilization efficiency of vapor is improved, and as the flash vapor is subjected to gas-solid separation by using the gas-solid separator, normal and efficient operation of the evaporation system is ensured.
Description
Technical field
The present invention relates to a kind of solid-liquid mixing pyrosol waste heat recycling device and Waste Heat Recovery thereof and utilize method.
Background technology
In corncob, the content of xylan reaches 35-40%, can extract the xylan in corncob by the method for boiling, extract the corncob cooking liquor after xylan, there are higher temperature (165 DEG C) and pressure (0.65MPA), there is very high value, but in corncob cooking liquor, there is again the solid particle of a certain amount of corncob, its recycling is had to certain difficulty.Also have a lot of similarly solid-liquid mixing pyrosols, due to the existence of solid particle in solution, if directly easily stop up water back as thermal source, therefore propose a suitable method solution solid-liquid mixing pyrosol Waste Heat Recovery problem necessary.
Summary of the invention
For overcoming the deficiencies in the prior art, the invention provides a kind of solid-liquid mixing pyrosol waste heat recycling device of energy effective recycling solid-liquid mixing pyrosol heat.
The technical scheme that the present invention takes is: a kind of solid-liquid mixing pyrosol waste heat recycling device, comprises material inlet, one-level flash system, two-stage flash system, deslagging pond, transh pump and material outlet, wherein
One-level flash system comprises one-level flash tank, one-level gas solid separator and one-level blow-off valve, material inlet is located on one-level flash tank, one-level flash drum overhead is provided with pipeline and is connected with the top of one-level gas solid separator, the top of one-level gas solid separator is provided with one-level gas conveyance conduit, the bottom of one-level gas solid separator is connected to deslagging pond by one-level Residue extraction pipeline, and one-level Residue extraction pipeline is provided with one-level blow-off valve;
Two-stage flash system comprises two-stage flash tank, secondary gas solid separator and secondary blow-off valve, one-level flash tank bottom is provided with pipeline and is connected with the top of two-stage flash tank, two-stage flash tank top is provided with pipeline and is connected with the top of secondary gas solid separator, the top of secondary gas solid separator is provided with secondary gas conveyance conduit, the bottom of secondary gas solid separator is connected to deslagging pond by secondary Residue extraction pipeline, secondary Residue extraction pipeline is provided with secondary blow-off valve, two-stage flash pot bottom is provided with pipeline and is connected with transh pump one end, and the transh pump other end is connected with material outlet.
Further, also comprise waste heat utilization device, described waste heat utilization device is used for heating concentrated solution, according to flow of solution to comprising successively feed surge drum, the first preheater, the second preheater, the 3rd preheater, 1st effective evaporator, an effect separator, 2nd effect evaporator, two effect separators, triple effect evaporator, triple effect separator, outlet valve, wherein one-level gas conveyance conduit is connected with 1st effective evaporator, for 1st effective evaporator provides an effect heating steam, secondary gas conveyance conduit is connected with the second preheater, for the second preheater provides heating steam.
Further, described waste heat utilization device also comprises condenser, and described 1st effective evaporator, 2nd effect evaporator, triple effect evaporator and triple effect separator are respectively equipped with jet chimney and are connected with condenser.
Further, described waste heat utilization device also comprises condensation steam-water separator, steam enter condenser cooling after, then enter and in condensation steam-water separator, be separated into gas and liquid, gas is discharged from condensation steam-water separator top, and liquid is discharged from condensation steam-water separator bottom.
Further, described waste heat utilization device also comprises an effect steam-water separator, two effect steam-water separators, triple effect steam-water separator, one effect heating steam enters in an effect steam-water separator and is separated into steam and liquid from 1st effective evaporator is discharged, steam enters 2nd effect evaporator as two effect heating steams from an effect steam-water separator top, liquid enters the first preheater from an effect steam-water separator bottom, gives the first preheater heating rear discharge; The heating steam of two effect heating steams and the second preheater all enters in two effect steam-water separators and is separated into steam and liquid, steam enters triple effect evaporator as triple effect heating steam from two effect steam-water separator tops, liquid enters the first preheater from two effect steam-water separator bottoms, gives the first preheater heating rear discharge; Triple effect heating steam enters and in triple effect steam-water separator, is separated into steam and liquid from triple effect plate-type evaporator is discharged, steam enters condenser from triple effect steam-water separator top, liquid enters the first preheater from triple effect steam-water separator bottom, gives the first preheater heating rear discharge.
Further, described waste heat utilization device also comprises preheating jet chimney and preheating steam-condensation waterpipe, preheating jet chimney is connected with the 3rd preheater, be used for importing pre-vapours to the 3rd preheater heating, the 3rd preheater and preheating steam-condensation waterpipe, for deriving the condensed water of pre-vapours.
Further, the first preheater, the second preheater, the 3rd preheater are plate type preheater, and 1st effective evaporator, 2nd effect evaporator, triple effect evaporator are plate-type evaporator, and described condenser is plate-type condenser.
The present invention also provides solid-liquid mixing pyrosol Waste Heat Recovery to utilize method, and its step comprises:
(1), solid-liquid mixing pyrosol enters one-level flash system, produce one-level flash-off steam and pass into 1st effective evaporator as an effect heating steam, remainder enters two-stage flash system, produces two-stage flash steam and passes into preheater as pre-vapours, and remainder is discharged;
(2), need the concentrated material solution of heating to be introduced into feed surge drum, after preheater preheatings at different levels, enter 1st effective evaporator and continue to be heated to form liquid-vapor mixture, then enter an effect separator, be separated into gas and liquid, gas is delivered to 2nd effect evaporator and is used as two effect heating steams, liquid enters the 2nd effect evaporator vaporization of being again heated, enter two effect separators, be separated into gas and liquid, gas is delivered to triple effect evaporator and is used as triple effect heating steam, liquid enters the triple effect evaporator vaporization of being again heated, enter triple effect separator, the solution of extracting out from triple effect separator bottom is sent into next process by outlet valve, from 1st effective evaporator, 2nd effect evaporator, whole gases that the part gas of triple effect evaporator evaporation separates with triple effect separator enter the cooling rear discharge of condenser.
Further, in step (1), solid-liquid mixing pyrosol enters one-level flash tank from material inlet, after one-level flash distillation, produce steam, solid particle in solid-liquid mixing pyrosol is also with steam rising, the steam that contains solid impurity enters in one-level gas solid separator, after vapour separates admittedly, steam is transported to 1st effective evaporator as an effect heating steam by one-level gas conveyance conduit, solid is discharged to deslagging pond from one-level Residue extraction pipeline by a blow-off valve, solid-liquid mixing pyrosol after one-level flash distillation enters two-stage flash tank by the pipeline of one-level flash tank bottom, produce steam through two-stage flash, the steam that contains solid impurity enters in secondary gas solid separator, after vapour separates admittedly, steam is transported to the second preheater for preheating material by secondary gas conveyance conduit, solid is discharged to deslagging pond from secondary Residue extraction pipeline by secondary blow-off valve, the solid-liquid mixed solution of two-stage flash pot bottom is discharged from material outlet by transh pump.
Further, solid-liquid mixing pyrosol is to extract the corncob cooking liquor after xylan by the method for boiling corncob, and its temperature is 160-170 DEG C, and pressure is 0.6-0.7MPA, and flow is 28-30t/45min; When one-level flash distillation, 110 DEG C of steam 3-5 tons of generation per hour; When two-stage flash, 90 DEG C of steam 1-1.5 tons of generation per hour.
Beneficial effect following points of the present invention:
(1) adopt the mode of two-stage flash to carry out effective utilization to its heat point echelon corncob cooking liquor, one-level flash-off steam temperature is higher, an effect heating steam by it as follow-up waste heat utilization device, two-stage flash vapor (steam) temperature is lower, use it for follow-up waste heat utilization device and carry out preheating material, met the demand of vapo(u)rization system different temperatures thermal source, not only saved a large amount of steam, and make steam obtain reasonable utilization, improve the service efficiency of steam.
(2) flash-off steam that adopts gas solid separator to produce flash tank carries out vapour and admittedly separates, gas and the solid particle of carrying secretly are separated, the steam that makes to enter 1st effective evaporator and the second preheater keeps clean clean, avoids plate contaminated or stop up plate passage and then affect vapo(u)rization system.Ensure that vapo(u)rization system is normal and moved efficiently.
(3) first preheaters, the second preheater, the 3rd preheater, 1st effective evaporator, 2nd effect evaporator, triple effect evaporator, condenser adopt sheet structure form, it is high that plank frame has heat exchange efficiency, system bulk is little, lightweight, easy to maintenance, the feature such as the low and thermal loss of operation and maintenance expense is very little, secondly, in system, the recycling of the indirect steam of last effect is as the heating steam of next effect, each effect steam condensate (SC) is all used to material to carry out preheating, waste heat is all fully used, and energy-saving effect is remarkable especially.
(4) corncob cooking liquor (containing corncob solid particle) itself has higher pressure and temperature, the mode of this process using two-stage flash, one-level flash distillation by corncob cooking liquor from 165 degree flash distillation to 110 degree, the steam of 110 degree of generation 3-5t per hour, two-stage flash by corncob cooking liquor from 110 degree flash distillation to 90 degree, generation 1-1.5t per hour 90 degree steam.One-level and two-stage flash produce the steam of different temperatures, adopt double flash evaporation can farthest reclaim on the one hand the heat of corncob cooking liquor, and the temperature of high level matches with low level is also beneficial to the reasonable utilization of reclaimed heat on the other hand.One-level flash-off steam temperature is higher, the effect heating steam by it as subsequent evaporation equipment, and two-stage flash vapor (steam) temperature is lower, uses it for subsequent evaporation equipment preheating material.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is done further and illustrated.
Detailed description of the invention
embodiment 1
Referring to Fig. 1, this solid-liquid mixes pyrosol waste heat recycling device, comprises material inlet, one-level flash system, two-stage flash system, deslagging pond, transh pump and material outlet, wherein
One-level flash system comprises one-level flash tank 1, one-level gas solid separator 2 and one-level blow-off valve 3, material inlet is located on one-level flash tank, one-level flash tank 1 top is provided with pipeline and is connected with the top of one-level gas solid separator 2, the top of one-level gas solid separator 2 is provided with one-level gas conveyance conduit, the bottom of one-level gas solid separator 2 is connected to deslagging pond 4 by one-level Residue extraction pipeline, the conical head position, lower end of one-level gas solid separator 2 is provided with spray equipment, prevent that the solid particle after separating from sticking to one-level gas solid separator inwall, one-level Residue extraction pipeline is provided with one-level blow-off valve 3, one-level blow-off valve 3 is star blow-off valve, one-level Residue extraction pipeline is water sealing (sealing water) pipe, deslagging pond 4 is water leg, solid impurity is discharged in water leg through water sealing (sealing water) pipe out from star blow-off valve,
Two-stage flash system comprises two-stage flash tank 5, secondary gas solid separator 6 and secondary blow-off valve 7, one-level flash tank bottom is provided with pipeline and is connected with the top of two-stage flash tank 5, two-stage flash tank 5 tops are provided with pipeline and are connected with the top of secondary gas solid separator 6, the top of secondary gas solid separator 6 is provided with secondary gas conveyance conduit, the bottom of secondary gas solid separator 6 is connected to deslagging pond by secondary Residue extraction pipeline, the conical head position, lower end of secondary gas solid separator 6 is provided with spray equipment, prevent that the solid particle after separating from sticking to secondary gas solid separator inwall, secondary Residue extraction pipeline is provided with secondary blow-off valve 7, secondary blow-off valve 7 is star blow-off valve, secondary Residue extraction pipeline is water sealing (sealing water) pipe, deslagging pond 4 is water leg, solid impurity is discharged in water leg through water sealing (sealing water) pipe out from star blow-off valve, two-stage flash tank 5 bottoms are provided with pipeline and are connected with transh pump 8 one end, transh pump 8 other ends are connected with material outlet.
Also comprise waste heat utilization device, described waste heat utilization device is used for heating concentrated solution, according to flow of solution to comprising successively feed surge drum 9, the first preheater 10, the second preheater 11, the 3rd preheater 12, 1st effective evaporator 13, one effect separator 14, 2nd effect evaporator 15, two effect separators 16, triple effect evaporator 17, triple effect separator 18, outlet valve 19, wherein one-level gas conveyance conduit is connected with 1st effective evaporator 13, for 1st effective evaporator 13 provides an effect heating steam, secondary gas conveyance conduit is connected with the second preheater 11, for the second preheater 11 provides heating steam, wherein the first preheater 10, the second preheater 11, the 3rd preheater 12 is plate type preheater, 1st effective evaporator 13, 2nd effect evaporator 15, triple effect evaporator 17 is plate-type evaporator.
Described waste heat utilization device also comprises condenser 20 and condensation steam-water separator 21, described 1st effective evaporator 13,2nd effect evaporator 15, triple effect evaporator 17 and triple effect separator 18 are respectively equipped with jet chimney and are connected with condenser 20, steam enter condenser cooling after, enter again and in condensation steam-water separator 21, be separated into gas and liquid, gas is discharged from condensation steam-water separator 21 tops, and liquid is discharged from condensation steam-water separator 21 bottoms.
Waste heat utilization device also comprises an effect steam-water separator 22, two effect steam-water separators 23, triple effect steam-water separator 24, one effect heating steam enters in an effect steam-water separator 22 and is separated into steam and liquid from 1st effective evaporator 13 is discharged, steam enters 2nd effect evaporator 15 as two effect heating steams from effect steam-water separator 22 tops, liquid enters the first preheater 10 from effect steam-water separator 22 bottoms, gives the first preheater 10 heating rear discharge; The heating steam of two effect heating steams and the second preheater 11 all enters in two effect steam-water separators 23 and is separated into steam and liquid, steam enters triple effect evaporator 17 as triple effect heating steam from two effect steam-water separator 23 tops, liquid enters the first preheater 10 from two effect steam-water separator 23 bottoms, gives the first preheater heating rear discharge; Triple effect heating steam enters and in triple effect steam-water separator 24, is separated into steam and liquid from triple effect plate-type evaporator 17 is discharged, steam enters condenser 20 from triple effect steam-water separator 24 tops, liquid enters the first preheater 10 from triple effect steam-water separator 24 bottoms, gives the first preheater heating rear discharge.
Waste heat utilization device also comprises preheating jet chimney and preheating steam-condensation waterpipe, preheating jet chimney is connected with the 3rd preheater 12, be used for importing pre-vapours and heat to the 3rd preheater 12, the 3rd preheater 12 and preheating steam-condensation waterpipe, for deriving the condensed water of pre-vapours.
embodiment 2
Temperature is 160-170 DEG C, pressure is 0.6-0.7MPA, flow is that the corncob cooking liquor of 28-30t/45min enters one-level flash tank from material inlet, one-level flash distillation by corncob cooking liquor from 165 degree flash distillation to 110 degree, the steam of 110 degree of generation 3-5 ton per hour, corncob cooking liquor itself contains solid particle, flash process unavoidably has particle with steam rising, the steam that contains solid impurity enters in one-level gas solid separator 2, after vapour separates admittedly, steam is transported to 1st effective evaporator 13 as an effect heating steam by one-level gas conveyance conduit, solid is discharged to deslagging pond 4 from one-level Residue extraction pipeline by a blow-off valve 3, the corncob cooking liquor of 110 degree enters two-stage flash tank 5 by the pipeline of one-level flash tank bottom, two-stage flash by corncob cooking liquor from 110 degree flash distillation to 90 degree, the steam of 90 degree of generation 1-1.5t per hour, the steam that contains solid impurity enters in secondary gas solid separator 6, after vapour separates admittedly, steam is transported to the second preheater 11 for preheating material by secondary gas conveyance conduit, solid is discharged to deslagging pond 4 from secondary Residue extraction pipeline by secondary blow-off valve 7, the material that the solid-liquid of two-stage flash pot bottom mixes is discharged from material outlet by transh pump 8.
Initial temperature is 60-70 DEG C, concentration is 3%, the xylo-oligosaccharide solution of inlet amount 39000kg/h is introduced into feed surge drum 9, then enter successively the first preheater 10, the second preheater 11, the 3rd preheater 12 is heated, wherein the heating steam of the first preheater 10 is from an effect steam-water separator 22, the liquid that two effect steam-water separators 23 and triple effect steam-water separator 24 are discharged, the heating steam of the second preheater 11 is from secondary flash-off steam, the pre-vapours that the heating steam of the 3rd preheater 12 passes into from the external world, when solution goes out the 3rd preheater 12, temperature has approached an effect evaporation boiling point, enter 1st effective evaporator 13, one effect heating steam of 1st effective evaporator 13 comes from the steam that one-level flash system produces, solution is heated and is vaporized into liquid-vapor mixture, enter an effect separator 14, under the effect of centrifugal force, liquid flies to wall and is then gathered in bottom, be sent in 2nd effect evaporator 15, separated gas is pumped to 2nd effect evaporator 15 from effect separator 14 tops and uses as two effect heating steams, solution is in 2nd effect evaporator 15, the vaporization of being heated again, enter two effect separators 16, isolated liquid and gas by two effect separators 16 again, pass through again the evaporation of triple effect evaporator 17, the separation of triple effect separator 18, the solution of extracting out from triple effect separator 18 bottoms has been concentrated to the concentration 4.33% of the requirement of design, sends into next process processing by outlet valve 19.Whole steam that the part steam evaporating from 1st effective evaporator 13,2nd effect evaporator 15, triple effect evaporator 17 separates with triple effect separator 18 enter condenser and discharge by water cooling.
Corncob cooking liquor itself contains solid particle, and flash process unavoidably has particle with steam rising, enters subsequently in evaporimeter, causes evaporimeter plate to pollute, and even passage obstruction, has a strong impact on evaporation efficiency and equipment normally moves.Therefore after one-level and two-stage flash, be provided with gas solid separator, flash steam enters in gas solid separator, after carrying out effective separation with particle, enter evaporimeter, gas solid separator separator lower end conical head position is provided with spray equipment, prevent that the solid particle after separating from sticking to separator inwall, solid particle leaves gas solid separator after washing away, and enters the star blow-off valve at position on the lower, is discharged in water leg out from blow-off valve through water sealing (sealing water) pipe.The features such as what be and then connected with double flash evaporation system is the board-like following current vapo(u)rization system of triple effect, and evaporimeter/preheater/condenser adopts plank frame, and it is high that plate-type evaporator/preheater/condenser has heat exchange efficiency, and volume is little, lightweight, easy to maintenance.The indirect steam that in triple effect concentration process, an effect produces is as two effect heat sources, the indirect steam that two effects produce is as triple effect heat source, the heating steam condensed water that each effect produces is all for heating material solution, heat energy is fully used, and the concentration process of whole material solution carries out under the negative pressure state being produced by vavuum pump.
Claims (10)
1. a solid-liquid mixing pyrosol waste heat recycling device, comprises material inlet, one-level flash system, two-stage flash system, deslagging pond, transh pump and material outlet, wherein
One-level flash system comprises one-level flash tank, one-level gas solid separator and one-level blow-off valve, material inlet is located on one-level flash tank, one-level flash drum overhead is provided with pipeline and is connected with the top of one-level gas solid separator, the top of one-level gas solid separator is provided with one-level gas conveyance conduit, the bottom of one-level gas solid separator is connected to deslagging pond by one-level Residue extraction pipeline, and one-level Residue extraction pipeline is provided with one-level blow-off valve;
Two-stage flash system comprises two-stage flash tank, secondary gas solid separator and secondary blow-off valve, one-level flash tank bottom is provided with pipeline and is connected with the top of two-stage flash tank, two-stage flash tank top is provided with pipeline and is connected with the top of secondary gas solid separator, the top of secondary gas solid separator is provided with secondary gas conveyance conduit, the bottom of secondary gas solid separator is connected to deslagging pond by secondary Residue extraction pipeline, secondary Residue extraction pipeline is provided with secondary blow-off valve, two-stage flash pot bottom is provided with pipeline and is connected with transh pump one end, and the transh pump other end is connected with material outlet.
2. solid-liquid mixing pyrosol waste heat recycling device according to claim 1, it is characterized in that: also comprise waste heat utilization device, described waste heat utilization device is used for heating concentrated solution, according to flow of solution to comprising successively feed surge drum, the first preheater, the second preheater, the 3rd preheater, 1st effective evaporator, one effect separator, 2nd effect evaporator, two effect separators, triple effect evaporator, triple effect separator, outlet valve, wherein one-level gas conveyance conduit is connected with 1st effective evaporator, for 1st effective evaporator provides an effect heating steam, secondary gas conveyance conduit is connected with the second preheater, for the second preheater provides heating steam.
3. solid-liquid mixing pyrosol waste heat recycling device according to claim 1 and 2, it is characterized in that: described waste heat utilization device also comprises condenser, described 1st effective evaporator, 2nd effect evaporator, triple effect evaporator and triple effect separator are respectively equipped with jet chimney and are connected with condenser.
4. solid-liquid mixing pyrosol waste heat recycling device according to claim 3, it is characterized in that: described waste heat utilization device also comprises condensation steam-water separator, steam enter condenser cooling after, enter again and in condensation steam-water separator, be separated into gas and liquid, gas is discharged from condensation steam-water separator top, and liquid is discharged from condensation steam-water separator bottom.
5. solid-liquid mixing pyrosol waste heat recycling device according to claim 3, it is characterized in that: described waste heat utilization device also comprises an effect steam-water separator, two effect steam-water separators, triple effect steam-water separator, one effect heating steam enters in an effect steam-water separator and is separated into steam and liquid from 1st effective evaporator is discharged, steam enters 2nd effect evaporator as two effect heating steams from an effect steam-water separator top, liquid enters the first preheater from an effect steam-water separator bottom, gives the first preheater heating rear discharge; The heating steam of two effect heating steams and the second preheater all enters in two effect steam-water separators and is separated into steam and liquid, steam enters triple effect evaporator as triple effect heating steam from two effect steam-water separator tops, liquid enters the first preheater from two effect steam-water separator bottoms, gives the first preheater heating rear discharge; Triple effect heating steam enters and in triple effect steam-water separator, is separated into steam and liquid from triple effect plate-type evaporator is discharged, steam enters condenser from triple effect steam-water separator top, liquid enters the first preheater from triple effect steam-water separator bottom, gives the first preheater heating rear discharge.
6. solid-liquid mixing pyrosol waste heat recycling device according to claim 2, it is characterized in that: also comprise preheating jet chimney and preheating steam-condensation waterpipe, preheating jet chimney is connected with the 3rd preheater, be used for importing pre-vapours to the 3rd preheater heating, the 3rd preheater and preheating steam-condensation waterpipe, for deriving the condensed water of pre-vapours.
7. solid-liquid mixing pyrosol waste heat recycling device according to claim 3, it is characterized in that: described the first preheater, the second preheater, the 3rd preheater are plate type preheater, described 1st effective evaporator, 2nd effect evaporator, triple effect evaporator are plate-type evaporator, and described condenser is plate-type condenser.
8. solid-liquid mixing pyrosol Waste Heat Recovery is utilized a method, and its step comprises:
(1), solid-liquid mixing pyrosol enters one-level flash system, produce one-level flash-off steam and pass into 1st effective evaporator as an effect heating steam, remainder enters two-stage flash system, produces two-stage flash steam and passes into preheater as pre-vapours, and remainder is discharged;
(2), need the concentrated material solution of heating to be introduced into feed surge drum, after preheater preheatings at different levels, enter 1st effective evaporator and continue to be heated to form liquid-vapor mixture, then enter an effect separator, be separated into gas and liquid, gas is delivered to 2nd effect evaporator and is used as two effect heating steams, liquid enters the 2nd effect evaporator vaporization of being again heated, enter two effect separators, be separated into gas and liquid, gas is delivered to triple effect evaporator and is used as triple effect heating steam, liquid enters the triple effect evaporator vaporization of being again heated, enter triple effect separator, the solution of extracting out from triple effect separator bottom is sent into next process by outlet valve, from 1st effective evaporator, 2nd effect evaporator, whole gases that the part gas of triple effect evaporator evaporation separates with triple effect separator enter the cooling rear discharge of condenser.
9. solid-liquid mixing pyrosol Waste Heat Recovery according to claim 8 is utilized method, it is characterized in that: in step (1), solid-liquid mixing pyrosol enters one-level flash tank from material inlet, after one-level flash distillation, produce steam, solid particle in solid-liquid mixing pyrosol is also with steam rising, the steam that contains solid impurity enters in one-level gas solid separator, after vapour separates admittedly, steam is transported to 1st effective evaporator as an effect heating steam by one-level gas conveyance conduit, solid is discharged to deslagging pond from one-level Residue extraction pipeline by a blow-off valve, solid-liquid mixing pyrosol after one-level flash distillation enters two-stage flash tank by the pipeline of one-level flash tank bottom, produce steam through two-stage flash, the steam that contains solid impurity enters in secondary gas solid separator, after vapour separates admittedly, steam is transported to the second preheater for preheating material by secondary gas conveyance conduit, solid is discharged to deslagging pond from secondary Residue extraction pipeline by secondary blow-off valve, the solid-liquid mixed solution of two-stage flash pot bottom is discharged from material outlet by transh pump.
10. solid-liquid mixing pyrosol used heat Waste Heat Recovery is according to claim 8 or claim 9 utilized method, it is characterized in that: described solid-liquid mixing pyrosol is to extract the corncob cooking liquor after xylan by the method for boiling corncob, its temperature is 160-170 DEG C, pressure is 0.6-0.7MPA, and flow is 28-30t/45min; When one-level flash distillation, 110 DEG C of steam 3-5 tons of generation per hour; When two-stage flash, 90 DEG C of steam 1-1.5 tons of generation per hour.
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| CN110013680A (en) * | 2019-04-23 | 2019-07-16 | 四川汇宇生物技术有限公司 | A kind of gelatin evaporation heat recycle device |
| CN110201482A (en) * | 2019-06-30 | 2019-09-06 | 河南查瑞特种设备有限公司 | A kind of energy-saving and environment-friendly boiler exhaust gas processing system |
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