CN210602323U - Lithium bromide refrigeration cooling device in combined-soda-process soda ash production process - Google Patents
Lithium bromide refrigeration cooling device in combined-soda-process soda ash production process Download PDFInfo
- Publication number
- CN210602323U CN210602323U CN201820889985.1U CN201820889985U CN210602323U CN 210602323 U CN210602323 U CN 210602323U CN 201820889985 U CN201820889985 U CN 201820889985U CN 210602323 U CN210602323 U CN 210602323U
- Authority
- CN
- China
- Prior art keywords
- furnace gas
- communicated
- lithium bromide
- hot water
- gas washing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- Sorption Type Refrigeration Machines (AREA)
Abstract
A lithium bromide refrigeration cooling device in the process of producing soda by a combined alkali method comprises a hot alkali liquid tower, a furnace gas washing tower, a hot water barrel and a lithium bromide unit, wherein the lithium bromide unit comprises a generator, an absorber, a condenser and an evaporator, the inlet end of the hot alkali liquid tower is externally connected with the furnace gas output end of a calcining system, the outlet end of the hot alkali liquid tower is communicated with the furnace gas input end of the furnace gas washing tower, the hot water output end of the furnace gas washing tower is communicated with the hot water barrel, the water outlet end of the hot water barrel is communicated with the heating inlet end of the generator, and the cooling outlet end of the generator is communicated with the input end of the furnace gas washing tower. The device adopts the heat of stove gas washing tower recycle calcination system, as the heat source that the lithium bromide refrigerator prepared low temperature refrigerated water, has reached energy rational utilization, and greatly practice thrift the energy consumption, optimization system index.
Description
Technical Field
The utility model relates to a refrigeration heat sink, especially a lithium bromide refrigeration heat sink in alkali method soda production process unites.
Background
The lithium bromide refrigeration cooling process in the traditional sodium carbonate production process is as follows:
1. and (3) a heat source process of a lithium bromide refrigerator. In the production process of the soda ash, a heat source of a traditional lithium bromide refrigerator is generally steam or hot water of a production system, the recovery and the utilization of the heat of furnace gas of a calcination system and steam condensate water of the calcination system, the dry ammonium system, the heavy ash system, the salt production system and other systems are not considered, and the additional energy consumption is required.
2. The traditional crystallization system cooling in the production process of the soda is that the ice machine compresses to prepare liquid ammonia for cooling, the process needs large equipment investment, the operation of the ice machine needs more power consumption, and in addition, the liquid ammonia has strong corrosivity and high pressure of the compressed liquid ammonia, so the requirements on the quality and the grade of an external cooler for cooling the crystallization system are higher.
3. The temperature reduction of a traditional carbonization system and the temperature reduction of mother liquor entering a carbonization tower in the production process of the soda are both cooling temperature reduction of a circulating water air cooling tower, the process is greatly influenced by the environmental temperature, and the temperature of the circulating water cooled by the air cooling tower is up to over 32 ℃ in summer high-temperature production, so that the temperature reduction of the carbonization temperature and the temperature reduction of the mother liquor entering the tower are not easy.
Disclosure of Invention
The utility model aims to solve the technical problem that to the not enough of prior art, provide a reasonable in design, can effectively reduce system energy consumption and reduce equipment investment cost's lithium bromide refrigeration heat sink in the soda production process of allied oneself with alkaline process.
The technical problem to be solved by the utility model is realized through the following technical scheme. The utility model relates to a lithium bromide refrigeration heat sink in soda production process of allied soda method, the device includes hot alkali liquid tower, stove gas washing tower, hot-water drum and lithium bromide unit, the lithium bromide unit includes the generator, the absorber, condenser and evaporimeter, the external burner gas output of calcining the system of entrance point of hot alkali liquid tower is perhaps calcined, dry ammonium, heavy ash, the comdenstion water output of system such as salt system, the exit end of hot alkali liquid tower communicates with the burner gas input of stove gas washing tower, the hot water output of stove gas washing tower communicates with the hot-water drum, the water outlet end of hot-water drum communicates with the heating entry end of generator, the cooling exit end of generator communicates with the input of stove gas washing tower; the lithium bromide heat exchanger is connected between the generator and the absorber, the steam outlet end of the generator is communicated with the condenser, the cooling outlet end of the condenser is communicated with the refrigerant water inlet end of the evaporator, the steam outlet end of the evaporator is communicated with the absorber, a cooling water pipe convenient for exchanging heat to the tube side of the evaporator to prepare chilled water is communicated between the refrigerant water outlet end of the evaporator and the refrigerant water inlet end of the evaporator, and a refrigerant pump is arranged on the cooling water pipe. A hot water pump is connected between the hot water barrel and the generator; the lithium bromide unit is provided with a vacuum pump to periodically pump the unit for vacuum; the heat exchanger can exchange the lithium bromide dilute solution and the lithium bromide concentrated solution while exchanging the lithium bromide dilute solution and the lithium bromide concentrated solution between the generator and the absorber;
the utility model discloses the technical problem that solve can also further realize through following technical scheme, to above allies oneself with alkali method soda production in-process lithium bromide refrigeration heat sink, hot alkali liquid tower and stove gas washing tower all are equipped with 2, 2 hot alkali liquid tower's exit end respectively with the burner gas input intercommunication of 2 stove gas washing towers, the burner gas exit end of one of them stove gas washing tower and the burner gas input intercommunication of another stove gas washing tower, 2 stove gas washing tower's hot water output all communicates with the hot-water drum.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above ally oneself with lithium bromide refrigeration heat sink in the alkali method soda production process, still be provided with the hot water heater who is used for heating the hot-water drum on the hot-water drum.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above allies oneself with in the alkali method soda production process lithium bromide refrigeration heat sink, the intercommunication has the concentrated solution pump of lithium bromide between generator and the heat exchanger, and the intercommunication has the dilute solution pump of lithium bromide between absorber and the heat exchanger.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above ally oneself with lithium bromide refrigeration heat sink in the alkali method soda production process, communicate through the U-shaped water seal between stove gas washing tower and the hot-water drum.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above allied oneself with in the alkali method soda production process lithium bromide refrigeration heat sink, the heat exchanger is plate heat exchanger.
Compared with the prior art, the utility model discloses utilize hot alkali lye tower to retrieve the burner gas heat of calcination system or calcine, do ammonium, heavy ash, system steam condensate water such as salt and wash, utilize the stove gas washing tower to carry out the recovery of burner gas heat to the burner gas after washing, absorb the hot water of heat of retrieving as the heat source of lithium bromide refrigerating unit, no extra increase energy consumption reaches energy rational utilization, greatly practices thrift the energy consumption; and secondly, a lithium bromide refrigerator unit is adopted to replace the original technology of preparing liquid ammonia by compressing an ice machine, and the prepared low-temperature chilled water is used for reducing the temperature of a crystallization system, so that great economic and social benefits can be brought. The device adopts the heat of stove gas washing tower recycle calcination system, as the heat source that the lithium bromide refrigerator prepared low temperature refrigerated water, has reached energy rational utilization, and greatly practice thrift the energy consumption, optimization system index.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a lithium bromide refrigeration cooling device in the process of producing soda by a combined alkali method comprises a hot alkali liquid tower 1, a furnace gas washing tower 2, a hot water barrel 3 and a lithium bromide unit, wherein the lithium bromide unit comprises a generator 6, an absorber 9, a condenser 7 and an evaporator 10, the inlet end of the hot alkali liquid tower 1 is externally connected with the furnace gas output end of a calcination system or the condensed water output end of a calcination system, dry ammonium, heavy ash, salt making system and other systems, the outlet end of the hot alkali liquid tower 1 is communicated with the furnace gas input end of the furnace gas washing tower 2, the hot water output end of the furnace gas washing tower 2 is communicated with the hot water barrel 3, the water outlet end of the hot water barrel 3 is communicated with the heating inlet end of the generator 6, and the cooling outlet end of the generator 6 is communicated with the input end of the furnace; a heat exchanger 8 for exchanging lithium bromide solution and heat is connected between the generator 6 and the absorber 9, a steam outlet end of the generator 6 is communicated with the condenser 7, a cooling outlet end of the condenser 7 is communicated with a refrigerant water inlet end of the evaporator 10, a steam outlet end of the evaporator 10 is communicated with the absorber 9, a cooling water pipe for exchanging heat on a tube pass of the evaporator 10 to prepare chilled water is communicated between the refrigerant water outlet end of the evaporator 10 and the refrigerant water inlet end of the evaporator 10, and a refrigerant pump 11 is arranged on the cooling water pipe; the hot water in the hot water barrel is conveyed to the lithium bromide unit for use through the hot water pump 5.
The hot alkali liquid tower 1 and the furnace gas washing tower 2 are respectively provided with 2 hot alkali liquid towers, the outlet ends of the 2 hot alkali liquid towers 1 are respectively communicated with the furnace gas input ends of the 2 furnace gas washing towers, the furnace gas outlet end of one furnace gas washing tower 2 is communicated with the furnace gas input end of the other furnace gas washing tower 2, and the hot water output ends of the 2 furnace gas washing towers are respectively communicated with the hot water barrel 3.
The hot water barrel 3 is also provided with a hot water heater 4 for heating the hot water barrel 3. The arrangement of the hot water heater 4 is used for ensuring the normal operation of the lithium bromide unit when the system is originally driven, the hot water heater 4 is externally connected with low-pressure steam to heat hot water in the hot water barrel 3, the hot water temperature reaches the standard and then is sent to the lithium bromide unit for use, and after the system is normally produced and operated, the hot water heater 4 is stopped to heat the hot water barrel 3.
A lithium bromide concentrated solution pump is communicated between the generator 6 and the heat exchanger 8, and a lithium bromide dilute solution pump is communicated between the absorber 9 and the heat exchanger 8.
The furnace gas washing tower 2 is communicated with the hot water barrel 3 through a U-shaped water seal. The U-shaped water seal is used for preventing gas exchange between the furnace gas washing tower 2 and the hot water barrel 3 and reducing heat loss in the hot water barrel 3.
The heat exchanger 8 is a plate heat exchanger.
A lithium bromide refrigeration cooling method in the production process of soda by a combined soda process adopts a lithium bromide refrigeration cooling device to perform refrigeration cooling in the production process of soda by the combined soda process, and the refrigeration cooling method comprises the following steps: high-temperature furnace gas generated by a calcining system or a calcining, dry ammonium, heavy ash, salt making system and other systems is subjected to impurity removal washing through a hot alkali liquor tower, then the furnace gas is fed into a furnace gas washing tower to be sprayed and washed by soft water to recover the heat of the furnace gas, hot water generated by washing furnace gas in the gas washing tower is conveyed into a hot water barrel, the hot water in the hot water barrel reaches the standard and then is fed into a generator of a lithium bromide unit to heat a lithium bromide dilute solution in the generator, the lithium bromide dilute solution is heated to form a lithium bromide concentrated solution, the lithium bromide concentrated solution is fed into an absorber through a heat exchanger, steam generated by heating the lithium bromide dilute solution is fed into a condenser to be cooled, generated liquid water is fed into an evaporator to supplement refrigerant water in the evaporator, the refrigerant water is self-circulated through a cooling water pipe to cool down evaporator pipe pass chilled water to prepare low-temperature chilled water, and the steam generated in the evaporator is absorbed by the lithium bromide concentrated solution in the absorber, absorbing steam by the lithium bromide concentrated solution to form a lithium bromide dilute solution, entering the generator through the heat exchanger, and circulating in the way.
The temperature of the prepared low-temperature chilled water is 5-20 ℃. The prepared low-temperature chilled water is used for a crystallization cold-separation system to reduce the AI temperature, a crystallization pre-cold-separation system to reduce the AI temperature, a crystallization salting-out system to reduce the mother liquor temperature, a carbonization system to reduce the temperature of the mother liquor entering the tower, and the like.
Typically, low temperature chilled water is used with a temperature gradient:
1. preparing low-temperature cold water of about 5.5 ℃, sending the low-temperature cold water to a crystallization system cold-separation external cooler to reduce the cold-separation AI temperature by 2, and preparing low-temperature cold water of about 5-20 ℃, sending the low-temperature cold water to a crystallization system pre-cooling separation external cooler to reduce the pre-cooling separation AI temperature;
3. preparing low-temperature cold water of about 5.5 ℃, sending the cold water to a crystallization system salting-out external cooler to reduce the temperature of a salting-out mother II;
4. preparing low-temperature cold water of about 5-20 ℃, sending the cold water to a carbonization tower of a carbonization system, and reducing the temperature of carbonization and taking out;
5. preparing low-temperature cold water of about 5-20 ℃, sending the cold water to a carbonization system, feeding the cold water into a tower mother liquor cooler, and reducing the temperature of the carbonized tower mother liquor.
Compared with the prior art, the utility model has the advantages of it is following:
1. the utility model adopts the recovery of the heat of the furnace gas of the calcining system or the steam condensate of the calcining, dry ammonium, heavy ash, salt making and other systems as the heat source of the lithium bromide refrigerator, thereby not increasing the energy consumption, achieving the reasonable utilization of the energy and greatly saving the energy consumption;
2. the utility model adopts the lithium bromide refrigerator to prepare low-temperature chilled water for reducing the temperature of the crystallization system, and compared with the original liquid ammonia cooling process prepared by the compression of an ice machine, the device brings great economic and social benefits, and can save the electricity consumption by about 50 KWh/ton alkali by calculating the production capacity of 60 ten thousand tons/year of soda ash, and can reduce the electricity charge by 1800 ten thousand yuan each year and the external drainage by 1200 cubic each year by calculating 0.6 yuan each degree of electricity;
3. the utility model discloses a lithium bromide refrigerator is prepared low temperature refrigerated water and is used for reducing carbonization system temperature, compares original circulating water air cooling tower cooling technology, optimizes the system index.
Claims (3)
1. The utility model provides a lithium bromide refrigeration heat sink in soda production process of soda process of antithetical couplet, its characterized in that: the device comprises a hot alkali liquid tower, a furnace gas washing tower, a hot water barrel and a lithium bromide unit, wherein the lithium bromide unit comprises a generator, an absorber, a condenser and an evaporator, the inlet end of the hot alkali liquid tower is externally connected with the furnace gas output end of a calcination system or the condensed water output ends of calcination, dry ammonium, heavy ash, salt making and other systems, the outlet end of the hot alkali liquid tower is communicated with the furnace gas input end of the furnace gas washing tower, the hot water output end of the furnace gas washing tower is communicated with the hot water barrel, the water outlet end of the hot water barrel is communicated with the heating inlet end of the generator, and the cooling outlet end of the generator is communicated with the input end of the furnace gas washing tower; a heat exchanger for exchanging lithium bromide solution and heat is connected between the generator and the absorber, a steam outlet end of the generator is communicated with the condenser, a cooling outlet end of the condenser is communicated with a refrigerant water inlet end of the evaporator, a steam outlet end of the evaporator is communicated with the absorber, a cooling water pipe convenient for exchanging heat on a tube pass of the evaporator to prepare chilled water is communicated between the refrigerant water outlet end of the evaporator and the refrigerant water inlet end of the evaporator, and a refrigerant pump is arranged on the cooling water pipe;
the hot alkali liquid tower and the furnace gas washing tower are respectively provided with 2 hot alkali liquid towers, the outlet ends of the 2 hot alkali liquid towers are respectively communicated with the furnace gas input ends of the 2 furnace gas washing towers, the furnace gas outlet end of one furnace gas washing tower is communicated with the furnace gas input end of the other furnace gas washing tower, and the hot water output ends of the 2 furnace gas washing towers are communicated with the hot water barrel;
the hot water barrel is also provided with a hot water heater for heating the hot water barrel;
the furnace gas washing tower is communicated with the hot water barrel through a U-shaped water seal.
2. The lithium bromide refrigeration cooling device in the combined-soda-process soda ash production process according to claim 1, characterized in that: a lithium bromide concentrated solution pump is communicated between the generator and the heat exchanger, and a lithium bromide dilute solution pump is communicated between the absorber and the heat exchanger.
3. The lithium bromide refrigeration cooling device in the combined-soda-process soda ash production process according to claim 1, characterized in that: the heat exchanger is a plate heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820889985.1U CN210602323U (en) | 2018-06-09 | 2018-06-09 | Lithium bromide refrigeration cooling device in combined-soda-process soda ash production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820889985.1U CN210602323U (en) | 2018-06-09 | 2018-06-09 | Lithium bromide refrigeration cooling device in combined-soda-process soda ash production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210602323U true CN210602323U (en) | 2020-05-22 |
Family
ID=70718995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820889985.1U Active CN210602323U (en) | 2018-06-09 | 2018-06-09 | Lithium bromide refrigeration cooling device in combined-soda-process soda ash production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210602323U (en) |
-
2018
- 2018-06-09 CN CN201820889985.1U patent/CN210602323U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103411347B (en) | Coupling type heat pump waste heat recovery system | |
| CN210602323U (en) | Lithium bromide refrigeration cooling device in combined-soda-process soda ash production process | |
| CN103808058B (en) | Band water as refrigerant preheater two-stage Equations of The Second Kind lithium bromide absorption type heat pump unit | |
| CN111879031A (en) | Lithium bromide refrigerating device and method in combined-soda-process soda ash production process | |
| CN108534389A (en) | Lithium bromide refrigerating heat sink and method in procedure of producing soda under joint alkaline process | |
| CN201795634U (en) | Waste heat recovery energy saving apparatus for cooling | |
| CN206291528U (en) | A kind of Coal Chemical Industry low level process waste refrigeration system | |
| CN216845195U (en) | Steam condensate heat energy recovery integrated device | |
| CN202973647U (en) | Flue gas hot water single/double-effect composite lithium bromide absorption refrigerating unit | |
| CN115108567A (en) | Energy-saving process for calcination crystallization section in soda production process by combined soda process | |
| CN215002973U (en) | Cement kiln waste heat utilization system | |
| CN202973719U (en) | Industrial equipment cooling system | |
| CN213119589U (en) | White spirit waste heat utilization system | |
| CN212029923U (en) | Absorption type supercooling transcritical CO2 system | |
| CN103808059A (en) | Secondary-generation and secondary-absorption second-class lithium bromide absorption heat pump unit | |
| CN111336714B (en) | Absorption type cold and warm water unit | |
| CN211084515U (en) | Flexible direct current transmission offshore platform heat recycling system | |
| CN113091349A (en) | High-efficient absorption heat pump | |
| CN205048785U (en) | Utilize absorbent refrigerating system of cooling combustion engine water waste heat | |
| CN109099743A (en) | A kind of multi-heat source residual neat recovering system | |
| CN216481679U (en) | Waste gas recovery absorption type main machine cold water system | |
| CN217383362U (en) | Waste heat recycling device in coal hydrogen production process | |
| CN217685943U (en) | Multifunctional cold and hot combined supply system | |
| CN217483325U (en) | High-temperature hot water cooling device of printing and dyeing setting machine adopting coupling energy-saving technology | |
| CN212362486U (en) | Lithium bromide refrigerating device in combined soda process soda ash production process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |