CN110124341A - It is a kind of suitable for crystalline solid solid content is high and the multi-effect evaporator of the high-salt wastewater containing organic matter - Google Patents
It is a kind of suitable for crystalline solid solid content is high and the multi-effect evaporator of the high-salt wastewater containing organic matter Download PDFInfo
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- CN110124341A CN110124341A CN201910535104.5A CN201910535104A CN110124341A CN 110124341 A CN110124341 A CN 110124341A CN 201910535104 A CN201910535104 A CN 201910535104A CN 110124341 A CN110124341 A CN 110124341A
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- 239000007787 solid Substances 0.000 title claims abstract description 34
- 239000005416 organic matter Substances 0.000 title claims abstract description 15
- 239000002351 wastewater Substances 0.000 title claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 204
- 238000001704 evaporation Methods 0.000 claims abstract description 163
- 230000008020 evaporation Effects 0.000 claims abstract description 153
- 239000007788 liquid Substances 0.000 claims abstract description 65
- 239000000463 material Substances 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 238000003860 storage Methods 0.000 claims abstract description 8
- 238000013461 design Methods 0.000 claims abstract description 7
- 238000009834 vaporization Methods 0.000 claims description 30
- 230000008016 vaporization Effects 0.000 claims description 30
- 230000018044 dehydration Effects 0.000 claims description 13
- 238000006297 dehydration reaction Methods 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 12
- 238000004094 preconcentration Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000012452 mother liquor Substances 0.000 claims description 5
- 238000010025 steaming Methods 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 238000004140 cleaning Methods 0.000 abstract description 5
- 239000000243 solution Substances 0.000 description 30
- 238000012546 transfer Methods 0.000 description 15
- 239000013078 crystal Substances 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 239000002178 crystalline material Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 235000015110 jellies Nutrition 0.000 description 2
- 239000008274 jelly Substances 0.000 description 2
- 239000011133 lead Substances 0.000 description 2
- 239000010413 mother solution Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000011135 tin Substances 0.000 description 2
- 239000012267 brine Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0011—Heating features
- B01D1/0041—Use of fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/26—Multiple-effect evaporating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/043—Details
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
Abstract
It is a kind of suitable for crystalline solid solid content is high and the multi-effect evaporator of the high-salt wastewater containing organic matter, it is related to evaporation equipment technical field.It is a kind of that suitable for the multi-effect evaporator of crystalline solid solid content height and the high-salt wastewater containing organic matter, it includes an effect No.1 evaporation boiler, one No. two evaporation boilers of effect, one effect coil exchanger, one effect jacketed type exchanger, two effect heat exchangers, material liquid preheating heat exchanger, two effect circulating pumps, material liquid storage pool, liquid feeding pump, vacuum pump, steam-water separator, charging and magma circulating pump, 2nd effect evaporator, steam condenser three times, one effect No.1 evaporation boiler and No. two evaporation boilers of effect are connected in parallel, one effect coil exchanger of setting inside one effect No.1 evaporation boiler, after setting one imitates jacketed type exchanger by adopting the above technical scheme inside one No. two evaporation boilers of effect, the invention has the benefit that 1, it reasonable in design, fouling cleaning in pot can be made simple, it is easily-controllable, and it does not affect the normal production；2, more energy efficient.
Description
Technical field
The present invention relates to evaporation equipment technical fields, and in particular to one kind is suitable for crystalline solid solid content height and contains organic matter
High-salt wastewater multi-effect evaporator.
Background technique
Multi-effect evaporation crystallizer is common unit operating equipment in Chemical Manufacture, has a wide range of application, is energy-efficient etc. and is excellent
Point, but also have disadvantages that: 1, when be evaporated solution reach saturation state and have crystalline solid precipitation after, due to solution have reached it is full
And state, it is easy that crystalline solid is precipitated, so solution is when passing through heat exchanger channels, is easy blocking heat exchanger, cause production can not be into
Row.And after heat exchange blocking, all it is difficult to solve using water-soluble solution or manual cleaning or even whole heat exchanger is directly reported and ruined.
Factory is seriously affected normally to produce and economic benefit.2, because easily blocking heat exchanger, evaporative concn is lower, and solid content is low,
Centrifugal dehydration product yield is low, generates a large amount of mother liquors, waste of energy, and mother liquor can accumulate many impurity after repeatedly returning to vapo(u)rization system
Product crystalline solid granular size and shape are influenced, deteriorates centrifugal dehydration efficiency, or even cannot be dehydrated.3, containing a small amount of or micro have
For the evaporation and concentration of the effluent brine of machine object when using traditional multiple-effect and MVR, since mother liquor repeatedly returns to vapo(u)rization system, organic matter is not
Disconnected build up to deteriorates salt crystal growing environment, and particle is small, shape difference, easily emulsifies, and hardly possible dehydration causes production equipment cannot be just
Often operation and work.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide one kind to be suitable for crystalline solid solid content height
And the multi-effect evaporator of the high-salt wastewater containing organic matter, it reasonable in design, fouling cleaning can be made in pot simple, easily
Control, and do not affect the normal production, these special materials is enable to be applicable in multiple-effect production and achieve the purpose that more energy efficient.
To achieve the above object, the present invention is using following technical scheme: it includes effect No.1 evaporation boiler 1, one effect two
Number evaporation boiler 2, one imitate coil exchanger 3, one imitate jacketed type exchanger 4, two imitate heat exchanger 5, material liquid preheating heat exchanger 6,
Two effect circulating pumps 7, material liquid storage pool 8, liquid feeding pump 9, vacuum pump 10, steam-water separator 11, charging and magma circulating pump 12, two
Evaporator 13, three times steam condenser 14 are imitated, an effect No.1 evaporation boiler 1 and No. two evaporation boilers 2 of effect are connected in parallel, an effect No.1
Coil exchanger 3 is imitated in setting one inside evaporation boiler 2, one effect jacketed type exchanger 4 of setting inside No. two evaporation boilers 2 of effect, and two
Effect heat exchanger 5 is fixedly connected with raw material preheating heat exchanger 6, and two effect heat exchangers 5 are fixedly connected with two effect circulating pumps 7, raw material storage
Liquid feeding pump 9 is arranged in 8 one end of pond, and steam-water separator 11,2nd effect evaporator 13 and charging and magma is fixedly installed in 10 one end of vacuum pump
Circulating pump 12 is fixedly connected, and steam condenser 14 and 2nd effect evaporator 13 connect three times.
The one effect No.1 evaporation boiler 1, one imitates No. two evaporation boilers 2, one and imitates the effect jacket type heat exchange of coil exchanger 3, one
One effect heat exchanger of the composition of device 4, an effect heat exchanger do not use external heat exchanger, but in vaporization chamber using built-in coiled and
Evaporation chamber outer wall jacket type engages, and vaporization chamber and design of heat exchanger is made to be integrally formed machine structure.
The one effect evaporation boiler setting quantity is two or more.
The present invention solves the problems, such as that fouling of heat exchangers blocks, as far as possible increasing heat transfer area, is asked with making up heat transfer area deficiency
Topic；Circulating pump is eliminated, energy consumption has been saved.The present invention increases stirring system, the purpose designed in this way: first is that preventing from tying in an effect
The crystal deposition the bottom of a pan；Second is that preventing a large amount of foulings on heater, heat transfer efficiency is influenced；Contain admittedly third is that can be improved and be evaporated liquid
Amount improves equipment capacity and utilization rate of equipment and installations, reduces Recycling Mother Solution amount energy saving, prevents from deteriorating crystalline environment.
It is a kind of suitable for crystalline solid solid content is high and the settling mode packet of the multi-effect evaporator of the high-salt wastewater containing organic matter
Include following steps: step 1 is pumped into each effect vaporization chamber to certain liquid by material liquid liquid feeding pump from raw material liquid pool by raw material first
Position, then successively open one effect No.1 evaporation boiler and one effect No. two evaporation boilers in each heat exchanger heating medium pipe switch, one
Imitate the blender of No.1 evaporation boiler and No. two evaporation boilers of effect, the secondary steam of two effect evaporation solution circulation pumps, two effect heat exchangers
Disengaging switchs, the valve on vacuum pump, charging and magma circulating pump and each condenser, gas-liquid separator and each connecting pipe, so
Regulate and control the pressure of good each effect afterwards, temperature enters normal evaporation and concentration state；Step 2 enters two after the preheated device preheating of material liquid
The vaporization chamber for imitating evaporator returns again to two effect vaporization chambers after circulation is pumped to the heat exchange of two effect heat exchangers, loops back and forth like this work
Make, the two indoor solution of effect evaporation squeeze into an effect No.1 evaporation boiler by pre-concentration charging and magma circulating pump after evaporating pre-concentration
In No. two evaporation boilers of effect, it can continue to feed, it can also be with intermittent feeding.No. two evaporations of one effect No.1 evaporation boiler and an effect
After material evaporation concentration in pot reaches requirement concentration, centrifugal dehydration is carried out, the mother liquor after centrifugal dehydration returns again to an effect No.1
Circulating and evaporating in evaporation boiler and No. two evaporation boilers of effect；Step 3, the outside of an effect No.1 evaporation boiler and No. two evaporation boilers of effect
Heating medium after an effect coil exchanger and an effect jacketed type exchanger heat exchange, is passing through heat exchange if it is water vapour respectively
The condensed water generated after device heat exchange, which enters after condensing water conduit enters back into steam-water separator, returns again to preceding workshop section's use.If it is leading
Hot oil then returns again to boiler system after an effect coil exchanger and an effect jacketed type exchanger heat exchange and is recycled.One effect
The secondary steam generated in No.1 evaporation boiler and No. two evaporation boilers of effect enters under the action of vacuum pump through secondary steam pipeline
Enter workshop section before steam-water separator returns again to through condensing water conduit after heat exchange in two effect heat exchangers to use.It is generated in two effect vaporization chambers
Steam three times under the action of vacuum pump by jet chimney three times enter three times steam condenser condensation after become condensed water
Workshop section uses before returning again to after pipeline enters steam-water separator.Cooling water into steam condenser pipe three times is incorporated to it through pipeline
Workshop section uses before its condensate water recovery device returns；Step 4, multi-effect evaporator according to the evaporated water EQUILIBRIUM CALCULATION FOR PROCESS of each effect and
Concentration requires to be generally adopted by two or two evaporation boilers are used in parallel, when an effect No.1 evaporation boiler and No. two evaporation boilers of effect
On interior heat exchanger inner wall when the more serious influence normal operating of fouling, successively alternately emptying No.1, in a No. two effect evaporation boilers
Material, then beat material liquid or clear water with liquid feeding pump and imitated in No. two evaporation boilers into an effect No.1 evaporation boiler and one, continuing heat supply makes one
The fouling of heat exchanger surface in effect evaporation boiler continues to be concentrated by evaporation into the pre-concentration material liquid of two effect vaporization chambers again after dissolving
Operation, so on circulate；Step 5 first stops entering material liquid first, closes material liquid when needing to carry out shutdown operation
Each pipeline valve stops material liquid liquid feeding pump, continues to be concentrated by evaporation operation, successively empties two effect vaporization chambers, two effect heat exchangers, one
After the material for imitating No.1 evaporation boiler and No. two evaporation boilers of effect, then clear water is beaten with material liquid liquid feeding pump and enters each effect evaporation boiler or room
Interior, circulate operation makes each pipeline, valve, the material of each effect components fouling such as vaporization chamber or pot, heat exchanger completely molten after 2-3 hours
Xie Hou completes shutdown operation after closing moving component switch, a valve.
This patent uses heat transfer in an effect heat exchanger as far as possible under the premise of meeting requirement for anticorrosion and not influencing product quality
The high material of coefficient is as heater material, to make up the insufficient defect of heat transfer area, such as other heat transfer systems of copper, tin, lead, silver
The high material of number, or make surface anticorrosion processing in these material surfaces, to adapt to requirement for anticorrosion.
The present invention guarantees to be greater than or equal to normal pressure in the evaporation boiler internal pressure amount of overcoming of an effect, and the concentration for evaporating solution exists
The higher the better for concentration in the case where not influencing jelly pot and blocking pipeline, the purpose designed in this way: first is that making the boiling point for evaporating solution
Temperature increases, and because the characteristics of thermal crystalline material is that crystallization temperature is higher, temperature is higher, and crystalline particle is thick, shapeliness, convenient for dehydration
Separation and the free water content for reducing plane of crystal after dehydration save the drying energy in later period and improve drying equipment production capacity；Two
It is that concentration is higher, evaporation solution boiling temperature raising is more, and volatilization, the evolution for being conducive to organic matter in solution are more thorough, reduces
Solution viscosity is evaporated, the environment of crystal growth of evaporation solution is improved, makes to evaporate the control of solution crystalline solid in good crystalline state
Under, it prevents thermal crystalline material crystalline solid particle tiny and generates emulsion, solve the problems, such as that production equipment operating is abnormal.
The present invention uses two or more evaporation boilers used in parallel in an effect, the purpose designed in this way: first is that increasing heat exchange
The heat exchange area of device, because the heat exchanger that built-in coiled and jacket type engage is arranged in vaporization chamber and evaporation chamber outer wall
On, since the condition of space and operation limitation heat exchange area cannot be made greatly, and aftereffect evaporator uses external heat exchanger
Heat exchange area can be made greatly, therefore, usually all use single vaporization chamber, so an effect can only make up heat-transfer surface with quantity
The insufficient problem of product；Two are designed so as to when an effect evaporation boiler can interval when needing to clear up fouling in heat exchanger surface and pot
Formula rotation is cleared up and is not affected the normal production.And the main method for clearing up fouling in heat exchanger surface and pot is: when one evaporates
It when pot needs to clear up fouling in heat exchanger surface and pot, discharges in evaporator after material, adds evaporation solution stoste or clear water into steaming
Device is sent out, because evaporation solution stoste and clear water can dissolve fouling in heat exchanger surface and evaporation boiler.After dissolution is complete, it is further continued for
The routine operation of multiple-effect.Design keeps fouling cleaning in pot simple, easily-controllable in this way, and does not affect the normal production, regardless of evaporation boiler
The concentration or solid content of interior evaporation solution are mentioned more height and can be operated normally.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is structural schematic diagram of the invention.
Description of symbols: an effect No.1 evaporation boiler 1, one imitates No. two evaporation boilers 2, one and imitates the effect folder of coil exchanger 3, one
Shell type heat exchanger 4, two imitate heat exchanger 5, material liquid preheating heat exchanger 6, two imitate circulating pump 7, material liquid storage pool 8, liquid feeding pump 9,
Vacuum pump 10, steam-water separator 11, charging and magma circulating pump 12,2nd effect evaporator 13, three times steam condenser 14.
Specific embodiment
Referring to shown in Fig. 1, present embodiment using two effect evaporation technologies as example the technical solution adopted is that (say
It is bright): it includes that an effect No.1 evaporation boiler 1, one imitates No. two effect effect jacketed type exchangers of coil exchangers 3, one of evaporation boilers 2, one
4, two effect heat exchangers 5, material liquid preheating heat exchanger 6, two imitate circulating pump 7, material liquid storage pool 8, liquid feeding pump 9, vacuum pump 10, vapour
Separator 11, charging and magma circulating pump 12,2nd effect evaporator 13, three times steam condenser 14, effect 1 He of No.1 evaporation boiler
One No. two evaporation boilers 2 of effect are connected in parallel, one effect coil exchanger 3 of setting inside an effect No.1 evaporation boiler 2, an evaporation of effect two
2 inside setting of pot, one effect jacketed type exchanger 4, two effect heat exchangers 5 are fixedly connected with raw material preheating heat exchanger 6, two effect heat exchangers 5
It is fixedly connected with two effect circulating pumps 7, liquid feeding pump 9 is arranged in 8 one end of raw material storage pool, and steam-water separation is fixedly installed in 10 one end of vacuum pump
Device 11,2nd effect evaporator 13 are fixedly connected with charging and magma circulating pump 12, three times steam condenser 14 and 2nd effect evaporator 13
Connection.
The one effect No.1 evaporation boiler 1, one imitates No. two evaporation boilers 2, one and imitates the effect jacket type heat exchange of coil exchanger 3, one
One effect heat exchanger of the composition of device 4, an effect heat exchanger do not use external heat exchanger, but in vaporization chamber using built-in coiled and
Evaporation chamber outer wall jacket type engages, and vaporization chamber and design of heat exchanger is made to be integrally formed machine structure.
It is described one effect evaporation boiler setting quantity be two or more, purpose: 1, primarily to aftereffect evaporate
Evaporation capacity required for the heat exchanger of device and heat transfer area match and balance.2, it is to be able to intermittent operation, preferably
Clear up the crystalline substance dirt on heat exchanger.
It is a kind of suitable for crystalline solid solid content is high and the settling mode packet of the multi-effect evaporator of the high-salt wastewater containing organic matter
Include following steps: step 1 is pumped into each effect vaporization chamber to certain liquid by material liquid liquid feeding pump from raw material liquid pool by raw material first
Position, then successively open one effect No.1 evaporation boiler and one effect No. two evaporation boilers in each heat exchanger heating medium pipe switch, one
Imitate the blender of No.1 evaporation boiler and No. two evaporation boilers of effect, the secondary steam of two effect evaporation solution circulation pumps, two effect heat exchangers
Disengaging switchs, the valve on vacuum pump, charging and magma circulating pump and each condenser, gas-liquid separator and each connecting pipe, so
Regulate and control the pressure of good each effect afterwards, temperature enters normal evaporation and concentration state；Step 2 enters two after the preheated device preheating of material liquid
The vaporization chamber for imitating evaporator returns again to two effect vaporization chambers after circulation is pumped to the heat exchange of two effect heat exchangers, loops back and forth like this work
Make, the two indoor solution of effect evaporation squeeze into an effect No.1 evaporation boiler by pre-concentration charging and magma circulating pump after evaporating pre-concentration
In No. two evaporation boilers of effect, it can continue to feed, it can also be with intermittent feeding.No. two evaporations of one effect No.1 evaporation boiler and an effect
After material evaporation concentration in pot reaches requirement concentration, centrifugal dehydration is carried out, the mother liquor after centrifugal dehydration returns again to an effect No.1
Circulating and evaporating in evaporation boiler and No. two evaporation boilers of effect；Step 3, the outside of an effect No.1 evaporation boiler and No. two evaporation boilers of effect
Heating medium after an effect coil exchanger and an effect jacketed type exchanger heat exchange, is passing through heat exchange if it is water vapour respectively
The condensed water generated after device heat exchange, which enters after condensing water conduit enters back into steam-water separator, returns again to preceding workshop section's use.If it is leading
Hot oil then returns again to boiler system after an effect coil exchanger and an effect jacketed type exchanger heat exchange and is recycled.One effect
The secondary steam generated in No.1 evaporation boiler and No. two evaporation boilers of effect enters under the action of vacuum pump through secondary steam pipeline
Enter workshop section before steam-water separator returns again to through condensing water conduit after heat exchange in two effect heat exchangers to use.It is generated in two effect vaporization chambers
Steam three times under the action of vacuum pump by jet chimney three times enter three times steam condenser condensation after become condensed water
Workshop section uses before returning again to after pipeline enters steam-water separator.Cooling water into steam condenser pipe three times is incorporated to it through pipeline
Workshop section uses before its condensate water recovery device returns；Step 4, multi-effect evaporator according to the evaporated water EQUILIBRIUM CALCULATION FOR PROCESS of each effect and
Concentration requires to be generally adopted by two or two evaporation boilers are used in parallel, when an effect No.1 evaporation boiler and No. two evaporation boilers of effect
On interior heat exchanger inner wall when the more serious influence normal operating of fouling, successively alternately emptying No.1, in a No. two effect evaporation boilers
Material, then beat material liquid or clear water with liquid feeding pump and imitated in No. two evaporation boilers into an effect No.1 evaporation boiler and one, continuing heat supply makes one
The fouling of heat exchanger surface in effect evaporation boiler continues to be concentrated by evaporation into the pre-concentration material liquid of two effect vaporization chambers again after dissolving
Operation, so on circulate；Step 5 first stops entering material liquid first, closes material liquid when needing to carry out shutdown operation
Each pipeline valve stops material liquid liquid feeding pump, continues to be concentrated by evaporation operation, successively empties two effect vaporization chambers, two effect heat exchangers, one
After the material for imitating No.1 evaporation boiler and No. two evaporation boilers of effect, then clear water is beaten with material liquid liquid feeding pump and enters each effect evaporation boiler or room
Interior, circulate operation makes each pipeline, valve, the material of each effect components fouling such as vaporization chamber or pot, heat exchanger completely molten after 2-3 hours
Xie Hou completes shutdown operation after closing moving component switch, a valve.
The present invention solves the problems, such as that fouling of heat exchangers blocks, as far as possible increasing heat transfer area, is asked with making up heat transfer area deficiency
Topic；Circulating pump is eliminated, energy consumption has been saved.The present invention increases stirring system, the purpose designed in this way: first is that preventing from tying in an effect
The crystal deposition the bottom of a pan；Second is that preventing a large amount of foulings on heater, heat transfer efficiency is influenced；Contain admittedly third is that can be improved and be evaporated liquid
Amount improves equipment capacity and utilization rate of equipment and installations, reduces Recycling Mother Solution amount energy saving, prevents from deteriorating crystalline environment.
This patent uses heat transfer in an effect heat exchanger as far as possible under the premise of meeting requirement for anticorrosion and not influencing product quality
The high material of coefficient is as heater material, to make up the insufficient defect of heat transfer area, such as other heat transfer systems of copper, tin, lead, silver
The high material of number, or make surface anticorrosion processing in these material surfaces, to adapt to requirement for anticorrosion.
The present invention guarantees to be greater than or equal to normal pressure in the evaporation boiler internal pressure amount of overcoming of an effect, and the concentration for evaporating solution exists
The higher the better for concentration in the case where not influencing jelly pot and blocking pipeline, the purpose designed in this way: first is that making the boiling point for evaporating solution
Temperature increases, and because the characteristics of thermal crystalline material is that crystallization temperature is higher, temperature is higher, and crystalline particle is thick, shapeliness, convenient for dehydration
Separation and the free water content for reducing plane of crystal after dehydration save the drying energy in later period and improve drying equipment production capacity；Two
It is that concentration is higher, evaporation solution boiling temperature raising is more, and volatilization, the evolution for being conducive to organic matter in solution are more thorough, reduces
Solution viscosity is evaporated, the environment of crystal growth of evaporation solution is improved, makes to evaporate the control of solution crystalline solid in good crystalline state
Under, it prevents thermal crystalline material crystalline solid particle tiny and generates emulsion, solve the problems, such as that production equipment operating is abnormal.
The present invention uses two or more evaporation boilers used in parallel in an effect, the purpose designed in this way: first is that increasing heat exchange
The heat exchange area of device, because the heat exchanger that built-in coiled and jacket type engage is arranged in vaporization chamber and evaporation chamber outer wall
On, since the condition of space and operation limitation heat exchange area cannot be made greatly, and aftereffect evaporator uses external heat exchanger
Heat exchange area can be made greatly, therefore, usually all use single vaporization chamber, so an effect can only make up heat-transfer surface with quantity
The insufficient problem of product；Two are designed so as to when an effect evaporation boiler can interval when needing to clear up fouling in heat exchanger surface and pot
Formula rotation is cleared up and is not affected the normal production.And the main method for clearing up fouling in heat exchanger surface and pot is: when one evaporates
It when pot needs to clear up fouling in heat exchanger surface and pot, discharges in evaporator after material, adds evaporation solution stoste or clear water into steaming
Device is sent out, because evaporation solution stoste and clear water can dissolve fouling in heat exchanger surface and evaporation boiler.After dissolution is complete, it is further continued for
The routine operation of multiple-effect.Design keeps fouling cleaning in pot simple, easily-controllable in this way, and does not affect the normal production, regardless of evaporation boiler
The concentration or solid content of interior evaporation solution are mentioned more height and can be operated normally.
The above is only used to illustrate the technical scheme of the present invention and not to limit it, and those of ordinary skill in the art are to this hair
The other modifications or equivalent replacement that bright technical solution is made, as long as it does not depart from the spirit and scope of the technical scheme of the present invention,
It is intended to be within the scope of the claims of the invention.
Claims (4)
1. a kind of suitable for crystalline solid solid content is high and the multi-effect evaporator of the high-salt wastewater containing organic matter, it is characterised in that: it
Include effect No.1 evaporation boiler (1), No. two evaporation boilers (2) of effect, effect coil exchanger (3), an effect jacketed type exchanger
(4), two effects heat exchanger (5), material liquid preheating heat exchanger (6), two effect circulating pump (7), material liquid storage pool (8), liquid feeding pump
(9), vacuum pump (10), steam-water separator (11), charging and magma circulating pump (12), 2nd effect evaporator (13), steam is cold three times
Condenser (14), effect No. bis- evaporation boilers (2) of No.1 evaporation boiler (1) He Yixiao are connected in parallel, set inside effect No.1 evaporation boiler (2)
An effect coil exchanger (3) is set, one effect jacketed type exchanger (4) of setting inside No. two evaporation boilers (2) of effect, two effect heat exchangers
(5) it is fixedly connected with raw material preheating heat exchanger (6), two effects heat exchanger (5) He Erxiao circulating pump (7) are fixedly connected, raw material storage
Pond (8) one end be arranged liquid feeding pump (9), vacuum pump (10) one end be fixedly installed steam-water separator (11), 2nd effect evaporator (13) and
Charging and magma circulating pump (12) are fixedly connected, three times steam condenser (14) and 2nd effect evaporator (13) connection.
2. a kind of multiple-effect suitable for crystalline solid solid content height and the high-salt wastewater containing organic matter according to claim 1 is steamed
Send out device, it is characterised in that: it is described one effect No.1 evaporation boiler (1), one effect No. two evaporation boilers (2), one effect coil exchanger (3),
One effect jacketed type exchanger (4) composition, one effect heat exchanger, an effect heat exchanger do not use external heat exchanger, but in vaporization chamber
It is engaged using built-in coiled and evaporation chamber outer wall jacket type, vaporization chamber and design of heat exchanger is made to be integrally formed machine structure.
3. a kind of multiple-effect suitable for crystalline solid solid content height and the high-salt wastewater containing organic matter according to claim 1 is steamed
Send out device, it is characterised in that: the effect evaporation boiler is set as two or more.
4. a kind of suitable for crystalline solid solid content is high and the multi-effect evaporator of the high-salt wastewater containing organic matter, it is characterised in that it
Raw material is pumped into each effect by material liquid liquid feeding pump from raw material liquid pool first and evaporated by settling mode the following steps are included: step 1
The heating medium pipe of each heat exchanger in an effect No.1 evaporation boiler and No. two evaporation boilers of effect is then successively opened to certain liquid level in room
Road switchs, the blender of an effect No.1 evaporation boiler and No. two evaporation boilers of effect, and two effect evaporation solution circulation pumps, two imitate heat exchangers
Secondary steam disengaging switchs, on vacuum pump, charging and magma circulating pump and each condenser, gas-liquid separator and each connecting pipe
Then valve regulates and controls the pressure of good each effect, temperature enters normal evaporation and concentration state；Step 2, the preheated device preheating of material liquid
Two effect vaporization chambers are returned again to after circulation is pumped to the heat exchange of two effect heat exchangers into the vaporization chamber of 2nd effect evaporator afterwards, are so recycled
Working in reciprocating mode, the two indoor solution of effect evaporation squeeze into an effect No.1 by pre-concentration charging and magma circulating pump after evaporating pre-concentration
In evaporation boiler and No. two evaporation boilers of effect, it can continue to feed, it can also be with intermittent feeding；One effect No.1 evaporation boiler and an effect two
After material evaporation concentration in evaporation boiler reaches requirement concentration, centrifugal dehydration is carried out, the mother liquor after centrifugal dehydration returns again to an effect
Circulating and evaporating in No.1 evaporation boiler and No. two evaporation boilers of effect；Step 3, an effect No.1 evaporation boiler and No. two evaporation boilers of effect
External heating medium after an effect coil exchanger and an effect jacketed type exchanger heat exchange, is passing through respectively if it is water vapour
The condensed water generated after heat exchanger heat exchange, which enters after condensing water conduit enters back into steam-water separator, returns again to preceding workshop section's use；If
It is that conduction oil then returns again to boiler system recycling after an effect coil exchanger and an effect jacketed type exchanger heat exchange；
The secondary steam generated in one effect No.1 evaporation boiler and No. two evaporation boilers of effect is under the action of vacuum pump, through secondary steam pipeline
Enter workshop section before steam-water separator returns again to through condensing water conduit after exchanging heat in into two effect heat exchangers to use；In two effect vaporization chambers
The steam three times generated becomes cold after jet chimney three times enters steam condenser condensation three times under the action of vacuum pump
Workshop section uses before condensate returns again to after pipeline enters steam-water separator；Into steam condenser pipe three times cooling water through pipeline simultaneously
Enter workshop section before other condensate water recovery devices return to use；Step 4, multi-effect evaporator is according to the evaporated water equilbristat of each effect
It calculates and concentration requires to be generally adopted by two or two evaporation boilers are used in parallel, when No. two steamings of an effect No.1 evaporation boiler and an effect
When sending out more serious the influences normal operating of fouling on the heat exchanger inner wall in pot, successively alternately emptying No.1, No. two one imitate evaporation boilers
Interior material, then beat material liquid or clear water with liquid feeding pump and imitated in No. two evaporation boilers into an effect No.1 evaporation boiler and one, continue heat supply
Continue to evaporate into the pre-concentration material liquid of two effect vaporization chambers again after dissolving the fouling of the heat exchanger surface in an effect evaporation boiler
Concentration operation, so on circulate；Step 5 first stops entering material liquid first when needing to carry out shutdown operation, closes former
Each pipeline valve of feed liquid stops material liquid liquid feeding pump, continues to be concentrated by evaporation operation, successively empties two effect vaporization chambers, two effect heat exchange
After the material of device, an effect No.1 evaporation boiler and No. two evaporation boilers of effect, then clear water is beaten with material liquid liquid feeding pump and is evaporated into each effect
Pot is indoor, and circulate operation makes each pipeline, valve, each material for imitating the components fouling such as vaporization chamber or pot, heat exchanger after 2-3 hours
After being completely dissolved, after closing moving component switch, a valve, shutdown operation is completed.
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| CN201910535104.5A CN110124341A (en) | 2019-06-20 | 2019-06-20 | It is a kind of suitable for crystalline solid solid content is high and the multi-effect evaporator of the high-salt wastewater containing organic matter |
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| CN111265909A (en) * | 2020-03-25 | 2020-06-12 | 刘向东 | Multi-effect evaporation concentration crystallizer and evaporation concentration crystallization method |
| CN113476884A (en) * | 2021-06-15 | 2021-10-08 | 苏州乔发环保科技股份有限公司 | Non-homogeneous electrolyte solution sharing multi-chamber evaporation crystallizer |
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