CN205730419U - A kind of energy-saving urea vapo(u)rization system - Google Patents
A kind of energy-saving urea vapo(u)rization system Download PDFInfo
- Publication number
- CN205730419U CN205730419U CN201620526978.6U CN201620526978U CN205730419U CN 205730419 U CN205730419 U CN 205730419U CN 201620526978 U CN201620526978 U CN 201620526978U CN 205730419 U CN205730419 U CN 205730419U
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- liquid
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- heater
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
Abstract
This utility model belongs to technical field of urea production, specifically disclose a kind of energy-saving urea vapo(u)rization system, the flashed vapour advanced person's flash condenser condensation out of this Urea Evaporation System flash tank, the flash condenser gas that do not coagulates out enters back into a section surface condenser, the liquid outlet of flash tank arranges out liquid house steward, go out the outlet of liquid house steward to arrange first and go out liquid arm and second and go out liquid arm, first goes out liquid arm and second goes out liquid arm and all connects with first steam heater, first goes out and is provided with valve on liquid arm, second goes out string on liquid arm is provided with urine groove, between urine groove and first steam heater, also string is provided with urine pump, ensure the safe operation of vapo(u)rization system.This utility model Urea Evaporation System is by distributing each equipment rationally, ensure that the vacuum of Urea Evaporation System, thus ensure that the quality producing carbamide, ton carbamide reduces steam consumption 230kg simultaneously, and the carbamide steam consumption is in advanced level in water solution cycle method produces the same industry of carbamide.
Description
Technical field
This utility model relates to technical field of urea production, particularly relates to a kind of energy-saving urea vapo(u)rization system, this practicality
Novel Urea Evaporation System is designed mainly for producing 400000 tons of carbamide scales per year.
Background technology
Urea Evaporation workshop section in urea production process is highly energy-consuming link, and steam consumption is big.Urea Evaporation workshop section is true
The quality of the fusing urea that the size impact evaporation of reciprocal of duty cycle prepares, and then the trouble-free operation of prilling section can be affected.How to reduce
Urea Evaporation workshop section steam consumption, ensures that high vacuum is always the important topic of this area research simultaneously.Except improving
Technique, replaces steam vacuum pumping method for example with water evacuation method, further, it is also possible to set by more reasonably configuring each
Standby, thus reduce energy consumption further, it is ensured that the quality of the fusing urea that evaporation prepares.
Utility model content
This utility model is mainly solving the technical problems that provide a kind of energy-saving urea vapo(u)rization system, each by distributing rationally
Individual equipment, it is ensured that the vacuum of Urea Evaporation System, it is ensured that one section of hydraulic jet pump evaporating pressure (absolute pressure) 30-35KPa, two-stage nitration
Hydraulic jet pump evaporating pressure (absolute pressure)≤12KPa, thus ensure the quality index such as the moisture of carbamide, reduce Urea Evaporation simultaneously
System steam consumes.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is: a kind of energy-saving urea vapo(u)rization system, bag
Including flash heater, described flash heater is provided with urine inlet pipe, the urine of flash heater goes out pipe and connects with flash tank,
The flashed vapour outlet of described flash tank is connected with flash condenser, and the liquid outlet of flash tank is provided with out liquid house steward, goes out liquid total
The outlet of pipe is provided with and respectively communicated with first and goes out liquid arm and second and go out liquid arm, and the first liquid outlet and second going out liquid arm goes out
The liquid outlet of liquid arm all connects with first steam heater, and described first goes out to be provided with valve on liquid arm, and described second goes out liquid props up
On pipe, string is provided with urine groove, and between described urine groove and described first steam heater, also string is provided with urine pump, described first steam heater
Outlet is provided with a steaming separator, and a liquid-phase outlet and two steaming separator steams heater and connects, and a gas phase steaming separator goes out
Mouth is connected with a section surface condenser, and the liquid-phase outlet of described flash condenser connects ammonium fluid groove, the gas phase of flash condenser
Outlet is connected with a described section surface condenser, and the condensate outlet of a described section surface condenser is with described ammonium fluid groove even
Connecing, the described two bottom liquid phases outlets steaming heaters are provided with fusing urea output channel, two steam the upper outlet of heaters with
Two steam separator connects, and the described two bottom liquid phases outlets steaming separator connect with described fusing urea output channel, and described two
The upper gaseous phase outlet steaming separator is provided with two-stage nitration surface condenser, and the condensate outlet of described two-stage nitration surface condenser connects
Two table liquid baths, the gaseous phase outlet of described two-stage nitration surface condenser is connected with interconderser by dual circulation ejector, middle
The condensate outlet of condenser connects with described two table liquid baths；
The gas outlet of not coagulating of a described section surface condenser is provided with one section of hydraulic jet pump, and described interconderser is not
Solidifying gas outlet is provided with two-stage nitration hydraulic jet pump, the water inlet of described one section of hydraulic jet pump and described two-stage nitration hydraulic jet pump
Water inlet all passes sequentially through Heat Exchanger in Circulating Water System, water pump concatenates with cyclic water tank, the outlet of described one section of hydraulic jet pump and
The outlet of described two-stage nitration hydraulic jet pump is all connected with cyclic water tank by pipeline, and the liquid outlet of described two table liquid baths passes through
Pipeline connects with described cyclic water tank, and described two table liquid baths are arranged on above described cyclic water tank.
Preferably, the specifications and models of described one section of hydraulic jet pump are 26U-I-SP304, described two-stage nitration hydraulic jet pump
Specifications and models are 30U-II-SP304, and the specifications and models of described water pump are IJ175-150-450, and the specification of described cyclic water tank is
Long 2000mm, wide 3000mm, high 2500mm, the specifications and models of described Heat Exchanger in Circulating Water System are Φ 1000 × 4480, Fg=
150m2。
Preferably, described cyclic water tank connects with described ammonium fluid groove.
The Urea Evaporation System that this utility model provides, is introduced into flash condenser from flash tank flashed vapour out cold
Solidifying, the condensed fluid that condensation obtains enters ammonium fluid groove, enters back into a section surface condenser from the flash condenser gas that do not coagulates out,
The tolerance of not coagulating so can being lowered in a section surface condenser, and then reduce a section surface condenser to a certain extent
Export does not coagulates tolerance, contributes to maintaining the vacuum of water evacuation system, extends system operation time.The liquid discharge of flash tank
Mouthful it is provided with out liquid house steward, goes out the outlet of liquid house steward and be provided with and respectively communicated with first and go out liquid arm and second and go out liquid arm, first
Going out liquid arm and the second liquid outlet going out liquid arm all connects with first steam heater, described first goes out and is provided with valve on liquid arm
Door, described second goes out string on liquid arm is provided with urine groove, and between described urine groove and described first steam heater, also string is provided with urine
Pump, in actual production process, first goes out liquid arm and second goes out liquid arm and selects an operation, when vapo(u)rization system is properly functioning, by
Flash tank discharge about 90 DEG C, the urine of 74%-80% (mass fraction) be directly entered first steam heater, when vapo(u)rization system the most just
Chang Shi, can close first and go out the valve arranged on liquid arm, urine be delivered to urine groove and temporarily stores, and granulating system to be evaporated is just
Chang Houjing is pumped into first steam heater by urine, it is ensured that the safe operation of vapo(u)rization system.The liquid outlet of described two table liquid baths
Being connected with described cyclic water tank by pipeline, described two table liquid baths are arranged on above described cyclic water tank, are made by natural gravity
Two table liquid stream in two table liquid baths enter in cyclic water tank, reach to recycle purpose, saving water resource.
The beneficial effects of the utility model are: the Urea Evaporation System that this utility model provides, and have employed water evacuation skill
Art, and by distributing each equipment rationally further, enhance the ability to provide the auxiliary items between each device facility and compatibility, can guarantee that urine
The vacuum of element vapo(u)rization system, it is ensured that one section of hydraulic jet pump evaporating pressure (absolute pressure) 30-35KPa, two-stage nitration hydraulic jet pump steams
Send out pressure (absolute pressure)≤12KPa, only vapo(u)rization system vacuum to be guaranteed the quality index such as moisture of guarantee carbamide.This
The Urea Evaporation System steam consumption that utility model provides is 1.04t/t carbamide, and ton carbamide reduces steam consumption 230kg.Carbamide
The steam consumption is in advanced level in water solution cycle method produces the same industry of carbamide.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of energy-saving urea vapo(u)rization system that this utility model provides.
Detailed description of the invention
Below in conjunction with the accompanying drawings, embodiment of the present utility model is described in detail.
Embodiment
As shown in Figure 1, a kind of energy-saving urea vapo(u)rization system, including flash heater 1, flash heater 1 is provided with urine
Liquid inlet pipe, the urine from two points of towers enters flash heater 1 by urine inlet pipe, and the urine of flash heater 1 goes out pipe and dodges
Steaming groove 2 to connect, the flashed vapour outlet of flash tank 2 is connected with flash condenser 3, and it is total that the liquid outlet of flash tank 2 is provided with out liquid
Pipe, goes out the outlet of liquid house steward and is provided with and respectively communicated with first and goes out liquid arm and second and go out liquid arm, first go out liquid arm go out liquid
The liquid outlet going out liquid arm mouthful with second all connects with first steam heater 4, and first goes out and be provided with valve on liquid arm, and second goes out liquid
On arm, string is provided with urine groove 19, and between urine groove 19 and first steam heater 4, also string is provided with urine pump 20, and first steam heater 4 goes out
Mouth is provided with a steaming separator 5, and a liquid-phase outlet and two steaming separator 5 steams heater 15 and connects, and one steams the gas phase of separator 5
Outlet is connected with a section surface condenser 6, and the liquid-phase outlet of flash condenser 3 connects ammonium fluid groove 7, the gas of flash condenser 3
Outlet is connected with a section surface condenser 6 mutually, and the condensate outlet of a section surface condenser 6 is connected with ammonium fluid groove 7, and two steamings add
The bottom liquid phases outlet of hot device 15 is provided with fusing urea output channel, and two upper outlet steaming heater 15 steam separator with two
17 connect, and the two bottom liquid phases outlets steaming separator 17 connect with fusing urea output channel, and two steam the top gas of separator 17
Outlet is provided with two-stage nitration surface condenser 14 mutually, and the condensate outlet of two-stage nitration surface condenser 14 connects two table liquid baths 16, two-stage nitration
The gaseous phase outlet of surface condenser 14 is connected with interconderser 11 by dual circulation ejector 13, interconderser 11 cold
Condensate outlet and two table liquid baths 16 connect；
One section surface condenser 6 do not coagulate gas outlet be provided with one section of hydraulic jet pump 8, interconderser 11 do not coagulate gas
Outlet is provided with two-stage nitration hydraulic jet pump 10, the water inlet of one section of hydraulic jet pump 8 and the water inlet of two-stage nitration hydraulic jet pump 10
All pass sequentially through Heat Exchanger in Circulating Water System 12, water pump 18 concatenates with cyclic water tank 9, the outlet of one section of hydraulic jet pump 8 and two-stage nitration
The outlet of hydraulic jet pump 10 is all connected with cyclic water tank 9 by pipeline, the liquid outlet of two table liquid baths 16 by pipeline with
Cyclic water tank 9 connects, and two table liquid baths 16 are arranged on above cyclic water tank 9.
Equipment choice is as follows: the specifications and models of one section of hydraulic jet pump 8 are 26U-I-SP304, two-stage nitration hydraulic jet pump 10
Specifications and models be 30U-II-SP304, the specifications and models of water pump 18 are IJ175-150-450, and the specification of cyclic water tank 9 is for long
2000mm, wide 3000mm, high 2500mm, water-retention 15m in actual moving process3, the specifications and models of Heat Exchanger in Circulating Water System 12 are Φ
1000 × 4480, Fg=150m2。
Cyclic water tank 9 can connect with ammonium fluid groove 7, and the recirculated water in cyclic water tank 9 is along with the continuous condensation of gas, water
Middle ammonia content rises, and when ammonia reaches finite concentration, the water in cyclic water tank 9 can be delivered to ammonium fluid groove 7, then send solution
Inhale.
The work process of the energy-saving urea vapo(u)rization system that the present embodiment provides is: the urine from two points of towers is entered by urine
Pipe enters flash heater 1, and urine delivers to flash tank 2 after flash heater 1 heats, and the flashed vapour of flash tank 2 enters flash distillation
Condenser 3 condenses, and the liquid in flash tank 2 enters first steam heater 4, delivers to a steaming separator 5 after first steam heater 4 heats
Carrying out gas-liquid separation, a liquid phase steaming separator 5 isolated enters the two steaming the most heated evaporations of heater 15, the liquid phase obtained
Entering fusing urea output channel from the two bottom liquid phases outlets steaming heater 15, send to granulation tower pelletize, one steams separator 5 points
Entering a section surface condenser 6 from the gas phase obtained to condense, the liquid that flash condenser 3 condensation obtains sends into ammonium fluid groove 7, dodges
Evaporation condenser 3 gas that do not coagulates out condenses again also into a section surface condenser 6, and a section surface condenser 6 condenses
To liquid deliver to ammonium fluid groove 7, two steam and add thermogenetic gas-liquid mixture in heaters 15 from two tops steaming heaters 15
Outlet enters two steaming separators 17 and carries out gas-liquid separation, and the liquid of isolated exports also from two bottom liquid phases steaming separator 17
Entering fusing urea output channel, send to granulation tower pelletize, it is cold that two gas phases steaming separator 17 isolated enter two section surfaces
Condensation in condenser 14, the condensed fluid that two-stage nitration surface condenser 14 obtains enters two table liquid baths 16, goes out from two-stage nitration surface condenser 14
That comes does not coagulates after gas is volleyed by dual circulation ejector 13 to enter interconderser 11 and condense further, and interconderser 11 condenses
The condensed fluid obtained enters two table liquid baths 16；
What one section surface condenser 6 obtained does not coagulates the air inlet of gas one section of hydraulic jet pump 8 of entrance, interconderser 11
To do not coagulate gas enter two-stage nitration hydraulic jet pump 10 air inlet, one section of hydraulic jet pump 8 and two-stage nitration hydraulic jet pump 10 are at water
Under the flow at high speed of the recirculated water of pump 18 extraction, form negative pressure, aspiration will not coagulated and enter recirculated water is delivered to cyclic water tank 9.Circulation
Water-to-water heat exchanger 12 can reduce circulating water temperature, it is ensured that recirculated water runs at a lower temperature, thus ensures vacuum.
The Urea Evaporation System of the present embodiment, mainly for producing what 400,000 tons of carbamide scales were designed per year, is joined by optimization
Put each equipment, enhance the ability to provide the auxiliary items between each device facility and compatibility, can guarantee that the vacuum of Urea Evaporation System, protect
Demonstrate,prove one section of hydraulic jet pump evaporating pressure (absolute pressure) 30-35KPa, two-stage nitration hydraulic jet pump evaporating pressure (absolute pressure)≤12KPa, only
Vapo(u)rization system vacuum is had to be guaranteed the quality index such as moisture of guarantee carbamide.The Urea Evaporation system that the present embodiment provides
System steam consumption is 1.04t/t carbamide, and ton carbamide reduces steam consumption 230kg.The carbamide steam consumption produces urine in water solution cycle method
The same industry of element is in advanced level.
The foregoing is only embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, every
Utilize the equivalent structure transformation that this utility model description and accompanying drawing content are made, or be directly or indirectly used in what other were correlated with
Technical field, is included in scope of patent protection of the present utility model.
Claims (3)
1. an energy-saving urea vapo(u)rization system, it is characterised in that include flash heater, described flash heater is provided with urine
Liquid inlet pipe, the urine of flash heater goes out pipe and connects with flash tank, and the flashed vapour outlet of described flash tank is with flash condenser even
Connecing, the liquid outlet of flash tank is provided with out liquid house steward, go out the outlet of liquid house steward be provided with and respectively communicated with first go out liquid arm and
Second goes out liquid arm, and first goes out the liquid outlet of liquid arm and the second liquid outlet going out liquid arm all connects with first steam heater, institute
Stating first to go out to be provided with valve on liquid arm, described second goes out string on liquid arm is provided with urine groove, described urine groove and described one
Steaming also string between heater and be provided with urine pump, the outlet of described first steam heater is provided with a steaming separator, and one steams the liquid of separator
Outlet is connected with two steaming heaters mutually, and one steams gaseous phase outlet and the section surface condenser connection of separator, and described flash distillation condenses
The liquid-phase outlet of device connects ammonium fluid groove, and the gaseous phase outlet of flash condenser is connected with a described section surface condenser, and described one
The condensate outlet of section surface condenser is connected with described ammonium fluid groove, and the described two bottom liquid phases outlets steaming heater are provided with
Fusing urea output channel, two upper outlet steaming heater are connected with two steaming separators, and described two steam the bottom liquid of separators
Outlet connects with described fusing urea output channel mutually, and it is cold that the described two upper gaseous phase outlets steaming separator are provided with two section surfaces
Condenser, the condensate outlet of described two-stage nitration surface condenser connects two table liquid baths, the gaseous phase outlet of described two-stage nitration surface condenser
Being connected with interconderser by dual circulation ejector, the condensate outlet of interconderser connects with described two table liquid baths；
A described section surface condenser do not coagulate gas outlet be provided with one section of hydraulic jet pump, described interconderser do not coagulate gas
Outlet is provided with two-stage nitration hydraulic jet pump, the water inlet of described one section of hydraulic jet pump and the water inlet of described two-stage nitration hydraulic jet pump
Mouthful all pass sequentially through Heat Exchanger in Circulating Water System, water pump concatenates with cyclic water tank, the outlet of described one section of hydraulic jet pump and described
The outlet of two-stage nitration hydraulic jet pump is all connected with cyclic water tank by pipeline, and the liquid outlet of described two table liquid baths passes through pipeline
Connecting with described cyclic water tank, described two table liquid baths are arranged on above described cyclic water tank.
Energy-saving urea vapo(u)rization system the most according to claim 1, it is characterised in that described one section of water-jet pump size
Model is 26U-I-SP304, and the specifications and models of described two-stage nitration hydraulic jet pump are 30U-II-SP304, described water pump size type
Number being IJ175-150-450, the specification of described cyclic water tank is long 2000mm, wide 3000mm, high 2500mm, and described recirculated water changes
The specifications and models of hot device are Φ 1000 × 4480, Fg=150m2。
Energy-saving urea vapo(u)rization system the most according to claim 1 and 2, it is characterised in that described cyclic water tank and described carbon
Ammonium liquid bath connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620526978.6U CN205730419U (en) | 2016-06-02 | 2016-06-02 | A kind of energy-saving urea vapo(u)rization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620526978.6U CN205730419U (en) | 2016-06-02 | 2016-06-02 | A kind of energy-saving urea vapo(u)rization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205730419U true CN205730419U (en) | 2016-11-30 |
Family
ID=57359486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620526978.6U Expired - Fee Related CN205730419U (en) | 2016-06-02 | 2016-06-02 | A kind of energy-saving urea vapo(u)rization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205730419U (en) |
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2016
- 2016-06-02 CN CN201620526978.6U patent/CN205730419U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20180602 |