CN105698427B - Workshop section's lithium bromide refrigerating cooling and the hot ammonia I mother liquors cleaning device of Outer Cooler and method are crystallized in procedure of producing soda under joint alkaline process - Google Patents
Workshop section's lithium bromide refrigerating cooling and the hot ammonia I mother liquors cleaning device of Outer Cooler and method are crystallized in procedure of producing soda under joint alkaline process Download PDFInfo
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- CN105698427B CN105698427B CN201610085651.4A CN201610085651A CN105698427B CN 105698427 B CN105698427 B CN 105698427B CN 201610085651 A CN201610085651 A CN 201610085651A CN 105698427 B CN105698427 B CN 105698427B
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- Prior art keywords
- cleaning
- lithium bromide
- ammonia
- outer cooler
- heat
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 168
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 title claims abstract description 108
- 238000004140 cleaning Methods 0.000 title claims abstract description 96
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 70
- 238000001816 cooling Methods 0.000 title claims abstract description 42
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000012452 mother liquor Substances 0.000 claims abstract description 24
- 238000005057 refrigeration Methods 0.000 claims abstract description 19
- 239000006096 absorbing agent Substances 0.000 claims abstract description 7
- 239000000498 cooling water Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 206010039509 Scab Diseases 0.000 claims description 5
- 230000008014 freezing Effects 0.000 claims description 5
- 238000007710 freezing Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 238000002425 crystallisation Methods 0.000 claims description 3
- 230000008025 crystallization Effects 0.000 claims description 3
- 239000008234 soft water Substances 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 2
- 230000008020 evaporation Effects 0.000 claims description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims 1
- 230000031709 bromination Effects 0.000 claims 1
- 238000005893 bromination reaction Methods 0.000 claims 1
- 229910052744 lithium Inorganic materials 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000001354 calcination Methods 0.000 abstract 1
- 239000003513 alkali Substances 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005185 salting out Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/05—Cost reduction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cleaning Or Drying Semiconductors (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention discloses workshop section's lithium bromide refrigerating cooling and the hot ammonia I mother liquor cleaning devices of Outer Cooler are crystallized in a kind of procedure of producing soda under joint alkaline process, the device includes lithium bromide chiller, the condenser of the lithium bromide chiller is equipped with the delivery port and water inlet that connect with cooling tower with absorber, the water inlet of generator, the delivery port delivery port with heat exchange of heat pipe respectively, water inlet connects, chilled water delivers to Outer Cooler by evaporator caused by lithium bromide chiller, the Outer Cooler is configured with cleaning axial-flow pump, pipeline between entrance of the circulation pipe outlet of Outer Cooler with cleaning axial-flow pump is connected by bypassing with hot ammonia I buckets, the hot ammonia I bucket outlets connect with hot ammonia I pumps；The invention also discloses a kind of method that refrigeration cool-down and cleaning are carried out using said apparatus.The present invention is freezed using lithium bromide chiller, is recycled calcination system heat, reasonably be make use of the energy, reduce energy consumption, using the cleaning axial-flow pump of big flow low lift, improve cleaning performance.
Description
Technical field
The present invention relates to a kind of refrigeration cool-down and cleaning device, work is crystallized in particularly a kind of procedure of producing soda under joint alkaline process
The cooling of section lithium bromide refrigerating and the hot ammonia I mother liquor cleaning devices of Outer Cooler.
The invention further relates to the method that application aforementioned means carry out refrigeration cool-down and cleaning.
Background technology
Workshop section's refrigeration and cleaning process are crystallized during traditional soda manufacture is：
1. cooling flow：Inhale the hot AI mother liquors of ammonia（45 ~ 48 DEG C of temperature）Backheat AI buckets, mother is pumped to hot AI throwings amount
Change, hot AI mother liquors are down to 26 ~ 28 DEG C after heat exchange, then deliver to cool crystallizer, beat cold AI by axial-flow pump and remove Outer Cooler and liquefied ammonia
Heat exchange, the cold AI after heat exchange return to cool crystallizer through aggregate groove, and cold analysis thickener is sent by taking out magma in the middle part of cool crystallizer,
Salting-out crystallizer is removed in cool crystallizer overflow, and salting-out crystallizer further separates out ammonium chloride by adding salt to utilize common-ion effect
Crystallization, thickener of saltouing is sent by being taken out in the middle part of salting-out crystallizer, salting-out crystallizer overflows back cold female II buckets, is pumped to cold female II
Mother changes to exchange heat with AI, and female II after heat exchange sends to suction ammonia, and liquefied ammonia exchanges heat with cold AI mother liquors in Outer Cooler, and liquefied ammonia heat absorption flashes to gas
Ammonia enters ammonia separator and carries out gas-liquid separation, and the liquefied ammonia under separating returns to Outer Cooler, and the gas ammonia isolated enters two level ammonia separation again
The further gas-liquid separation of device, the gas ammonia isolated enter ammonia house steward and are compressed through self-regulated into ammonia compressor, steamer ice maker,
As the higher overheat ammonia of temperature, pressure, enter each condenser through exhaust main and evaporation be cold and recirculated water carries out heat exchange,
Water after heat exchange returns ice maker air cooling tower through return main, and the cold water after cooling returns water cooling pond, and each condenser is delivered to water supply pump
With evaporate cold use, the liquefied ammonia after cooling enters ammonia storage tank, liquefied ammonia be sent into from ammonia storage tank bottom through choke valve in each Outer Cooler and
Mother liquor is exchanged heat, and completes the circulation compression of gas-liquid ammonia.Following defect be present in this crystallization cooling technique：System institute chilling requirement is whole
Freezed by ice maker and produced, system energy consumption is big, and soda ash ton alkali power consumption is higher, also increases equipment investment and the maintenance cost of system
With.With 300,000 tons/year of soda manufacture capacity calculation, it is necessary to configure the Kcal/h ice maker units of overall refrigerating effect 8,000,000, therefore to increase
80,000,000 yuan of oil (gas) filling device expense, increase power consumption about 120KWh/ ton alkali.
2. cleaning process：Inhale the hot AI mother liquors of ammonia（45 ~ 48 DEG C of temperature）Backheat AI buckets, are cleaned with hot AI and are pumped to cleaning
Outer Cooler tube side, clean in Outer Cooler pipe and scab, every group of Outer Cooler configures a hot AI cleaning pump, has cleaned hot AI overflows backheat
AI buckets, complete wash cycles.Following defect be present in this cleaning method：High-lift cleaning pump（Q=400m3/ h, H=40m）Increase
Power consumption, heavy-duty motor need to be configured（90KW）, increase power consumption, and internal circulating load is relatively low, influences cleaning performance.
The content of the invention
The technical problem to be solved in the present invention is in view of the shortcomings of the prior art, there is provided one kind can reduce system energy consumption,
Reduce equipment investment expense and workshop section's lithium bromide refrigerating cooling is crystallized in the procedure of producing soda under joint alkaline process that cleaning performance can be improved
And the hot ammonia I mother liquor cleaning devices of Outer Cooler.
Another technical problem to be solved by this invention is to provide a kind of using aforementioned means progress refrigeration cool-down and clear
The method washed.
The technical problem to be solved in the present invention is achieved through the following technical solutions, a kind of union soda soda manufacture mistake
Workshop section's lithium bromide refrigerating cooling and the hot ammonia I mother liquor cleaning devices of Outer Cooler are crystallized in journey, the device includes by condenser, occurred
Device, concentrated solution pump, plate type heat exchanger, weak solution pump, absorber, cryogenic fluid pump, the lithium bromide chiller of evaporator composition, its feature
It is that the condenser is equipped with the delivery port and water inlet that connect with cooling tower with the absorber；The water outlet of the generator
Mouth connects with the water inlet of heat exchange of heat pipe, and hot water is provided between the delivery port of the heat exchange of heat pipe and the water inlet of generator
Pump；The chilled water outlet of the evaporator is connected with the first Outer Cooler, the second Outer Cooler, the freezing of first Outer Cooler in turn
Freezing bucket, chilled water pump are sequentially provided between the chilled water inlet of water out and the evaporator, first Outer Cooler
The entrance with the first cleaning axial-flow pump, outlet connect respectively for circulation pipe outlet, entrance, the circulation pipe outlet of first Outer Cooler
Pipeline between the entrance of the described first cleaning axial-flow pump is connected by bypassing with hot ammonia I buckets；Second Outer Cooler follows
The entrance with the second cleaning axial-flow pump, outlet connect respectively for endless tube outlet, entrance, the outlet of the circulation pipe of second Outer Cooler with
Pipeline between the entrance of the second cleaning axial-flow pump is connected by bypassing with hot ammonia I buckets；The hot ammonia I bucket outlets and hot ammonia
I pumps connect.
Workshop section's lithium bromide refrigerating cooling and Outer Cooler heat are crystallized in a kind of procedure of producing soda under joint alkaline process of the present invention
Ammonia I mother liquor cleaning devices, its further preferred technical scheme or technical characteristic are：
It is described first cleaning axial-flow pump parameter be：Flow is 540-6600m3/ h, lift 2-7m.
It is described first cleaning axial-flow pump parameter be：Flow is 750m3/ h, lift 2m.
It is described second cleaning axial-flow pump parameter be：Flow is 540-6600m3/ h, lift 2-7m.
It is described second cleaning axial-flow pump parameter be：Flow is 750m3/ h, lift 2m.
The invention also discloses workshop section's lithium bromide refrigerating cooling and Outer Cooler are crystallized in a kind of procedure of producing soda under joint alkaline process
Hot ammonia I mother liquor cleaning methods, are characterized in, using in the procedure of producing soda under joint alkaline process described in one technical scheme of any of the above
Crystallize workshop section's lithium bromide refrigerating cooling and the hot ammonia I mother liquors cleaning device of Outer Cooler carries out refrigeration cool-down and cleaning, the refrigeration drop
Warm method：Furnace gas after heat alkali liquid washs enters heat exchange of heat pipe, and soft water exchanges heat with furnace gas in heat exchange of heat pipe and reclaims furnace gas
Heat, hot water out are pumped to the lithium bromide chiller with hot water, are gone through chilled water caused by lithium bromide chiller refrigeration
First Outer Cooler and the second Outer Cooler and ammonia I mother liquors are exchanged heat, and ammonia I mother liquor temperature is reduced into less than 10 DEG C, from described the
The chilled water that one Outer Cooler and the second Outer Cooler come out returns freezing bucket, and lithium bromide chiller is evacuated to by chilled water pump, recycles；
The cooling water of the lithium bromide chiller goes out unit and enters cooling tower, and being delivered to unit by cooling water pump again after cooling uses, such as
This moves in circles；The cleaning method：The hot ammonia I mother liquors for inhaling ammonia are supplemented to the first cleaning axial-flow pump and the second cleaning
The outlet of axial-flow pump, and add stop valve to carry out switching cleaning, the first Outer Cooler described in wash cycles and the second Outer Cooler tube side
Scab；The inlet tube of the hot ammonia I mother liquors redundance cleaned from the first cleaning axial-flow pump and the second cleaning axial-flow pump overflows back
Hot ammonia I buckets, then heat exchanger is pumped to by hot ammonia I.
Contrast experiment is carried out to the present invention, with 300,000 tons/year of soda manufacture ability, often 0.6 yuan of degree electricity calculates, and just makes
For cold flow, with it is traditional using ice maker refrigerating plant compared with, refrigeration cool-down is carried out using lithium bromide chiller, reduces total refrigeration
8,000,000 Kcal/h ice maker units are measured, 80,000,000 yuan of equipment investment expense can be reduced, power consumption 120KWh/ ton alkali can be saved, can be subtracted
Few yuan/year of the electricity charge 21,600,000；For hot ammonia I mother liquor cleaning processes, with traditional high-lift cleaning pump cleaning Outer Cooler of use
Scab and compare in pipe, after the cleaning axial-flow pump of big flow low lift, power consumption about 6.5KWh/ ton alkali can be saved, reduce electricity
Take 1,200,000 yuan/year.In summary, can yuan/year of power cost saving 22,800,000 using the present invention.
Compared with prior art, the present invention replaces traditional ice maker to freeze using lithium bromide chiller refrigeration, and recycling is forged
System thermal is burnt, while reduces system power consumption, reaches Utilizing Energy Sources in Reason, greatly saves energy consumption；The hot ammonia I mother liquors cleaning of Outer Cooler
High-lift hot ammonia I cleaning pumps are replaced using the cleaning axial-flow pump of big flow low lift, improve cleaning performance, and save electricity
Consumption.
Brief description of the drawings
Fig. 1 is the structural representation of the refrigeration cooling device of the present invention；
Fig. 2 is the structural representation of the cleaning device of the present invention.
Embodiment
Referring to the drawings, the concrete technical scheme of the present invention is further described, in order to which those skilled in the art enters
One step the present invention is understood, without forming the limitation to its right.
Embodiment 1, reference picture 1-2, workshop section's lithium bromide refrigerating cooling and outer is crystallized in a kind of procedure of producing soda under joint alkaline process
The hot ammonia I mother liquor cleaning devices of cooler, the device are included by condenser 3, generator 5, concentrated solution pump 4, plate type heat exchanger 6, dilute molten
The lithium bromide chiller that liquid pump 7, absorber 8, cryogenic fluid pump 9, evaporator 10 form, the condenser 3 are equipped with the absorber 8
The delivery port and water inlet to connect with cooling tower；The delivery port of the generator 5 connects with the water inlet of heat exchange of heat pipe 11, institute
State and heat-exchanger pump 12 is provided between 11 delivery ports of heat exchange of heat pipe and the water inlet of generator 5；The chilled water of the evaporator 10
Outlet is connected with the first Outer Cooler 2, the second Outer Cooler 1, chilled water outlet and the evaporator of first Outer Cooler 2 in turn
It is sequentially provided between 10 chilled water inlet and freezes bucket 14, chilled water pump 13, the circulation pipe outlet of first Outer Cooler 2,
The entrance with the first cleaning axial-flow pump 16, outlet connect entrance respectively, the circulation pipe of first Outer Cooler 2 outlet and described the
Pipeline between the one cleaning entrance of axial-flow pump 16 is connected by bypassing with hot ammonia I buckets 18；The circulation pipe of second Outer Cooler 1 goes out
The entrance with the second cleaning axial-flow pump 15, outlet connect respectively for mouth, entrance, the circulation pipe outlet of second Outer Cooler 1 and institute
The pipeline stated between the entrance of the second cleaning axial-flow pump 15 is connected by bypassing with hot ammonia I buckets 18；The hot outlet of ammonia I buckets 18 and heat
Ammonia I pumps 17 connect.
Embodiment 2, crystallize in a kind of procedure of producing soda under joint alkaline process described in embodiment 1 workshop section's lithium bromide refrigerating cooling and
In the hot ammonia I mother liquor cleaning devices of Outer Cooler, the parameter of the described first cleaning axial-flow pump 16 is：Flow is 540m3/ h, lift are
2m。
Embodiment 3, crystallize in a kind of procedure of producing soda under joint alkaline process described in embodiment 1 workshop section's lithium bromide refrigerating cooling and
In the hot ammonia I mother liquor cleaning devices of Outer Cooler, the parameter of the described first cleaning axial-flow pump 16 is：Flow is 6600m3/ h, lift
For 7m.
Embodiment 4, crystallize in a kind of procedure of producing soda under joint alkaline process described in embodiment 1 workshop section's lithium bromide refrigerating cooling and
In the hot ammonia I mother liquor cleaning devices of Outer Cooler, the parameter of the described first cleaning axial-flow pump 16 is：Flow is 3500m3/ h, lift
For 4.5m.
Embodiment 5, crystallize in a kind of procedure of producing soda under joint alkaline process described in embodiment 1 workshop section's lithium bromide refrigerating cooling and
In the hot ammonia I mother liquor cleaning devices of Outer Cooler, the parameter of the described first cleaning axial-flow pump 16 is：Flow is 750m3/ h, lift are
2m。
Embodiment 6, workshop section's lithium bromide system is crystallized in the procedure of producing soda under joint alkaline process described in embodiment 1-5 any one
In cold cooling and the hot ammonia I mother liquor cleaning devices of Outer Cooler, the parameter of the described second cleaning axial-flow pump 15 is：Flow is 540m3/
H, lift 2m.
Embodiment 7, workshop section's lithium bromide system is crystallized in the procedure of producing soda under joint alkaline process described in embodiment 1-5 any one
In cold cooling and the hot ammonia I mother liquor cleaning devices of Outer Cooler, the parameter of the described second cleaning axial-flow pump 15 is：Flow is
6600m3/ h, lift 7m.
Embodiment 8, workshop section's lithium bromide system is crystallized in the procedure of producing soda under joint alkaline process described in embodiment 1-5 any one
In cold cooling and the hot ammonia I mother liquor cleaning devices of Outer Cooler, the parameter of the described second cleaning axial-flow pump 15 is：Flow is
3500m3/ h, lift 4.5m.
Embodiment 9, workshop section's lithium bromide system is crystallized in the procedure of producing soda under joint alkaline process described in embodiment 1-5 any one
In cold cooling and the hot ammonia I mother liquor cleaning devices of Outer Cooler, the parameter of the described second cleaning axial-flow pump 15 is：Flow is 750m3/
H, lift 2m.
Embodiment 10, reference picture 1-2, using being tied in the procedure of producing soda under joint alkaline process described in any one of embodiment 1-9
The method that brilliant workshop section's lithium bromide refrigerating cooling and the hot ammonia I mother liquors cleaning device of Outer Cooler carry out refrigeration cool-down and cleaning：（1）Refrigeration
Cool-down method：Furnace gas after heat alkali liquid washs enters heat exchange of heat pipe 11, and soft water exchanges heat back in heat exchange of heat pipe 11 with furnace gas
Furnace gas heat is received, hot water heat-exchanger pump 12 out delivers to the generator 5 of the lithium bromide chiller, lithium bromide weak solution is heated
As lithium bromide concentrated solution, while generate refrigerant vapour；The higher lithium bromide concentrated solution of temperature is beaten to board-like by concentrated solution pump 4 changes
For hot device 6 with sending to lithium bromide absorption device 8 after the heat exchange of lithium bromide weak solution, absorbing the refrigerant vapour of evaporator 10 turns into lithium bromide
Weak solution, absorption process liberated heat are taken out of by cooling water, and obtained lithium bromide weak solution is delivered to plate by weak solution pump 7 again
Formula heat exchanger 6 after the heat exchange of lithium bromide concentrated solution with removing generator 5, and so far solution completes whole circulation；Cryogen caused by generator 5
Steam then removes condenser 3, with turning into aqueous water, aqueous water after cooling water temperature（That is cryogenic coolant water）Evaporator 10 is flow back into,
It is constantly replenished the water as refrigerant in evaporator 10, the cryogenic coolant water less than 5 DEG C in evaporator 10 is beaten by cryogenic fluid pump 9
Circulation exchanges heat with the tube side chilled water of evaporator 10, reduces chilled water temperature to 5 DEG C, refrigerant vapour caused by evaporator 10 goes to absorb
Device 8 is absorbed by weak solution, and so far water as refrigerant completes whole circulation.Gone through chilled water caused by lithium bromide chiller refrigeration described
First Outer Cooler 2 and the second Outer Cooler 1 exchange heat with ammonia I mother liquors, ammonia I mother liquor temperature are reduced into less than 10 DEG C, from described first
The chilled water that the Outer Cooler 1 of Outer Cooler 2 and second comes out returns freezing bucket 14, and lithium bromide chiller is evacuated to by chilled water pump 13, circulates
Use；The cooling water of the lithium bromide chiller goes out unit and enters cooling tower, and being delivered to unit by cooling water pump again after cooling makes
With so moving in circles；（2）Cleaning method：The hot ammonia I mother liquors for inhaling ammonia are supplemented to the first cleaning axial-flow pump 16 and the
The outlet of two cleaning axial-flow pumps 15, and add stop valve to carry out switching cleaning, described in wash cycles outside the first Outer Cooler 2 and second
The tube side of cooler 1 scabs；The hot ammonia I mother liquors redundance cleaned cleans axial-flow pump 15 from the first cleaning axial-flow pump 16 and second
Inlet tube overflow backheat ammonia I buckets 18, then heat exchanger is delivered to by hot ammonia I pumps 17.
Claims (6)
1. workshop section's lithium bromide refrigerating cooling and the hot ammonia I mother liquors cleaning dress of Outer Cooler are crystallized in a kind of procedure of producing soda under joint alkaline process
Put, the device is included by condenser, generator, concentrated solution pump, plate type heat exchanger, weak solution pump, absorber, cryogenic fluid pump, evaporation
The lithium bromide chiller of device composition, it is characterised in that the condenser is equipped with the water outlet to connect with cooling tower with the absorber
Mouth and water inlet；The delivery port of the generator connects with the water inlet of heat exchange of heat pipe, the delivery port of the heat exchange of heat pipe
Heat-exchanger pump is provided between the water inlet of generator；The chilled water outlet of the evaporator is connected with the first Outer Cooler, in turn
Two Outer Coolers, chilled water is sequentially provided between the chilled water outlet of first Outer Cooler and the chilled water inlet of the evaporator
Bucket, chilled water pump, the circulation pipe outlet of first Outer Cooler, entrance clean the entrance of axial-flow pump, outlet phase with first respectively
Connect, the pipeline between the entrance of the circulation pipe outlet of first Outer Cooler and the first cleaning axial-flow pump passes through bypass and heat
Ammonia I buckets connect；The entrance with the second cleaning axial-flow pump, outlet connect respectively for the circulation pipe outlet of second Outer Cooler, entrance,
Pipeline between the entrance of the circulation pipe outlet of second Outer Cooler and the second cleaning axial-flow pump passes through bypass and hot ammonia I
Bucket connects；The hot ammonia I bucket outlets connect with hot ammonia I pumps.
2. workshop section lithium bromide refrigerating cooling and outer cold is crystallized in a kind of procedure of producing soda under joint alkaline process according to claim 1
The hot ammonia I mother liquor cleaning devices of device, it is characterised in that it is described first cleaning axial-flow pump parameter be：Flow is 540-6600m3/ h,
Lift is 2-7m.
3. workshop section lithium bromide refrigerating cooling and outer cold is crystallized in a kind of procedure of producing soda under joint alkaline process according to claim 2
The hot ammonia I mother liquor cleaning devices of device, it is characterised in that it is described first cleaning axial-flow pump parameter be：Flow is 750m3/ h, lift
For 2m.
4. workshop section lithium bromide refrigerating cooling and outer cold is crystallized in a kind of procedure of producing soda under joint alkaline process according to claim 1
The hot ammonia I mother liquor cleaning devices of device, it is characterised in that it is described second cleaning axial-flow pump parameter be：Flow is 540-6600m3/ h,
Lift is 2-7m.
5. workshop section lithium bromide refrigerating cooling and outer cold is crystallized in a kind of procedure of producing soda under joint alkaline process according to claim 4
The hot ammonia I mother liquor cleaning devices of device, it is characterised in that it is described second cleaning axial-flow pump parameter be：Flow is 750m3/ h, lift
For 2m.
6. workshop section's lithium bromide refrigerating cooling and the hot ammonia I mother liquors cleaning side of Outer Cooler are crystallized in a kind of procedure of producing soda under joint alkaline process
Method, it is characterised in that using crystallization workshop section bromination in the procedure of producing soda under joint alkaline process described in claim 1-5 any one
Lithium refrigeration cool-down and the hot ammonia I mother liquors cleaning device of Outer Cooler carry out refrigeration cool-down and cleaning, the refrigeration cool-down method：Through thermokalite
Furnace gas after liquid washing enters heat exchange of heat pipe, and soft water exchanges heat with furnace gas in heat exchange of heat pipe and reclaims furnace gas heat, heat out
Water is pumped to the lithium bromide chiller with hot water, and first Outer Cooler is removed through chilled water caused by lithium bromide chiller refrigeration
Exchanged heat with the second Outer Cooler and ammonia I mother liquors, ammonia I mother liquor temperature is reduced to less than 10 DEG C, from first Outer Cooler and second
The chilled water that Outer Cooler comes out returns freezing bucket, and lithium bromide chiller is evacuated to by chilled water pump, recycles；The lithium bromide chiller
Cooling water goes out unit and enters cooling tower, and being delivered to unit by cooling water pump again after cooling uses, and so moves in circles；It is described
Cleaning method：The hot ammonia I mother liquors for inhaling ammonia are supplemented to the outlet of the first cleaning axial-flow pump and the second cleaning axial-flow pump,
And adding stop valve to carry out switching cleaning, the first Outer Cooler described in wash cycles and the second Outer Cooler tube side scab；The heat cleaned
Ammonia I mother liquors redundance cleans the inlet tube overflow backheat ammonia I buckets of axial-flow pump from the first cleaning axial-flow pump and second, then by hot ammonia
I is pumped to heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN111879031A (en) * | 2020-08-28 | 2020-11-03 | 连云港市福源德邦科技发展有限公司 | Lithium bromide refrigerating device and method in combined-soda-process soda ash production process |
| CN115108567A (en) * | 2022-07-18 | 2022-09-27 | 中国五环工程有限公司 | Energy-saving process for calcination crystallization section in soda production process by combined soda process |
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| CN102502718B (en) * | 2011-11-10 | 2013-07-17 | 赵祥海 | Carbonization crystallization technology in process for producing sodium carbonate through Hou's method |
| CN102502716B (en) * | 2011-11-10 | 2013-08-07 | 赵祥海 | Technology for cooling ammonia mother liquor I in crystallizing working section during combined soda producing process |
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Address after: 222000 108, Tongguan South Road, Haizhou District, Lianyungang, Jiangsu. Patentee after: Lianyungang Fuyuan Debon Technology Development Co., Ltd. Address before: 222000 108, Tongguan South Road, Haizhou District, Lianyungang, Jiangsu. Patentee before: Lianyungang prime state science and Technology Development Co., Ltd. |