CN102389639A - Urea solution evaporation and concentration equipment - Google Patents
Urea solution evaporation and concentration equipment Download PDFInfo
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- CN102389639A CN102389639A CN2011103481438A CN201110348143A CN102389639A CN 102389639 A CN102389639 A CN 102389639A CN 2011103481438 A CN2011103481438 A CN 2011103481438A CN 201110348143 A CN201110348143 A CN 201110348143A CN 102389639 A CN102389639 A CN 102389639A
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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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Abstract
The invention discloses urea solution evaporation and concentration equipment belonging to urea production equipment, and aims at providing energy-saving and environmentally-friendly urea production equipment which comprises a one-stage surface condenser, a one-stage steam injector, a one-stage evaporation separator, a two-stage surface condenser, a two-stage steam injector, an intercondenser, a two-stage secondary steam injector and a two-stage evaporation separator, wherein the two-stage steam injector, the two-stage secondary steam injector and the one-stage steam injector are connected with steam pipes in parallel, the one-stage steam injector (18) and the one-stage surface condenser (19) are communicated with a water tank (6) through a double-suction hydraulic injector (12), the two-stage secondary steam injector (17) and the intercondenser (13) are communicated with the water tank (6) through another double-suction hydraulic injector (12), a circulating pump (5) is communicated with the double-suction hydraulic injectors (12) through a heat exchanger (4), and the one-stage surface condenser (19) is communicated with the water tank (6).
Description
Technical field
The present invention relates to a kind of urea production equipment, relate in particular to a kind of urea liquid evaporation concentration equipment.
Background technology:As everyone knows; In urea production; It is power that the urea liquid evaporation and concentration adopts the middle pressure steam of soft water and 1.2MPa usually; Through steam jet ejector moisture in the urea liquid and ammonia are taken away, and made one section vapor seperator and dual circulation separator form vacuum, finally obtain concentration and be 99.5～99.7% fusing urea.At present; The urea liquid evaporation concentration device is usually by one section vapor seperator, a section surface condenser, one section steam jet ejector, and dual circulation separator, two section surface condensers, two sections steam jet ejectors, interconderser, two section second steam jet ejector constitute; Wherein, one section vapor seperator is communicated with one section steam jet ejector through a section surface condenser, and the dual circulation separator is communicated with two section second steam jet ejector through two section surface condensers, two sections steam jet ejectors, intercondersers successively.There is following defective in conventional apparatus in this:
1) steam consumption is big, energy consumption is high;
2) steam pressure fluctuates easily, thus cause vacustat property poor, influence product quality;
3) be the power aspiration vacuum with soft water, increased whole process system the water yield, destroyed the water balance of system;
4) ammonia that pumps out of steam jet ejector and power steam be by directly to airborne release, not only caused ammonia waste, but also severe contamination environment.
Summary of the invention:In order to overcome the defective that exists in the prior art, the present invention aims to provide a kind of urea liquid evaporation concentration equipment of energy-conserving and environment-protective.
To achieve these goals; The present invention adopts following technical scheme: it comprises the one section vapor seperator that is communicated with one section steam jet ejector through a section surface condenser; Through two section surface condensers, two sections dual circulation separators that steam jet ejector, interconderser are communicated with two section second steam jet ejector, the inlet of the inlet of said two sections steam jet ejectors, two section second steam jet ejector and the inlet and the steam pipe of one section steam jet ejector are connected in parallel successively; Be communicated with water tank through the double suction hydraulic ejector after the gas outlet parallel connection of the air entry of one section steam jet ejector and a section surface condenser; Be communicated with water tank through another double suction hydraulic ejector after the gas outlet parallel connection of the air entry of two section second steam jet ejector and interconderser, the circulating pump that is communicated with this water tank is communicated with the inlet of each double suction hydraulic ejector respectively through heat exchanger; The delivery port of one section surface condenser is communicated with the water supplement port of water tank.
Bottom at water tank is provided with discharge outlet, on this water tank, is provided with overfall and heat radiation gas port.
Compare with prior art; The present invention is owing to adopted technique scheme; On the basis of original structure, increase water tank and two double suction hydraulic ejectors, therefore can the original directly power steam and the ammonia of discharging have been reclaimed, can avoid ammonia waste, protection environment; Can the liquid that the section surface condenser in the water tank produces be heated again, reduced steam consumption, reduced energy consumption; In addition, the liquid that circulating pump and heat exchanger can be produced a section surface condenser is as the dynamic medium of periodic duty, and having overcome with soft water is that dynamic medium causes the unbalance defective of system's water yield.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the traditional structure sketch map of urea liquid evaporation concentration equipment.
Among the figure: 17 1 sections steam jet ejectors of one section vapor seperator 1 filling pipe 2 upper hoses, 3 heat exchanger 4 circulating pumps, 5 water tank 6 discharge outlet, 7 overfall 8 water supplement ports, 9 heat radiation gas port 10 downcomer 11 double suction hydraulic ejectors, 12 interconderser 16 2 section second steam jet ejector of 15 2 sections steam jet ejectors of 13 2 section surface condensers, 14 dual circulation separators, 18 1 section surface condensers 19
The specific embodiment:Below in conjunction with accompanying drawing and concrete embodiment the present invention is described further:
As shown in Figure 1: a section surface condenser 19 is connected between one section vapor seperator 1 and the one section steam jet ejector 18 through pipeline, and two section surface condensers 14, two sections steam jet ejectors 16 and interconderser 13 are linked in sequence between dual circulation separator 15 and two section second steam jet ejector 17 through pipeline; Two sections steam jet ejectors 16 inlet, the inlet of two section second steam jet ejector 17 and the inlet of one section steam jet ejector 18 be connected in parallel through pipeline and steam pipe.Be communicated with the suction inlet of double suction hydraulic ejector 12 after the gas outlet parallel connection of the air entry of one section steam jet ejector 18 and a section surface condenser 19; Be communicated with the suction inlet of another double suction hydraulic ejector 12 after the gas outlet parallel connection of the air entry of two section second steam jet ejector 17 and interconderser 13, the outlet of two double suction hydraulic ejectors 12 is communicated with water tank 6 through downcomer 11 respectively.The circulating pump that is communicated with this water tank 5 is communicated with heat exchanger 4 through pipeline, this heat exchanger pass through upper hose 3 respectively with each double suction hydraulic ejector 12 inlet be communicated with; The delivery port of one section surface condenser 19 is communicated with the water supplement port 9 of water tank 6 through filling pipe 2.For the ease of operation, the bottom of water tank 6 is provided with discharge outlet 7, on this water tank, is provided with overfall 8 and heat radiation gas port 10.
Can find out from Fig. 2, Fig. 1; With legacy equipment evaporation and concentration urea liquid; Ammonia and power steam quilt are directly to airborne release; Not only caused ammonia, steam waste, but also severe contamination environment, and be that power vacuumizes with soft water, increased the whole process system water yield, destroyed the water balance of system.
Claims (2)
1. urea liquid evaporation concentration equipment; Comprise the one section vapor seperator that is communicated with one section steam jet ejector through a section surface condenser; Through two section surface condensers, two sections dual circulation separators that steam jet ejector, interconderser are communicated with two section second steam jet ejector, the inlet of the inlet of said two sections steam jet ejectors, two section second steam jet ejector and the inlet and the steam pipe of one section steam jet ejector are connected in parallel successively; It is characterized in that: be communicated with water tank (6) through double suction hydraulic ejector (12) after the gas outlet parallel connection of the air entry of one section steam jet ejector (18) and a section surface condenser (19); Be communicated with water tank (6) through another double suction hydraulic ejector (12) after the gas outlet parallel connection of the air entry of two section second steam jet ejector (17) and interconderser (13), the circulating pump (5) that is communicated with this water tank is communicated with the inlet of each double suction hydraulic ejector (12) respectively through heat exchanger (4); The delivery port of one section surface condenser (19) is communicated with the water supplement port (9) of water tank (6).
2. urea liquid evaporation concentration equipment according to claim 1 is characterized in that: be provided with discharge outlet (7) in the bottom of water tank (6), on this water tank, be provided with overfall (8) and heat radiation gas port (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103481438A CN102389639A (en) | 2011-11-07 | 2011-11-07 | Urea solution evaporation and concentration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103481438A CN102389639A (en) | 2011-11-07 | 2011-11-07 | Urea solution evaporation and concentration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102389639A true CN102389639A (en) | 2012-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103481438A Pending CN102389639A (en) | 2011-11-07 | 2011-11-07 | Urea solution evaporation and concentration equipment |
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| CN (1) | CN102389639A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112742047A (en) * | 2020-12-31 | 2021-05-04 | 安徽六国化工股份有限公司 | Method and device for pumping negative pressure of urea production evaporation system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3954566A (en) * | 1974-01-25 | 1976-05-04 | Vereinigte Edelstahlwerke Ag | Apparatus for compensating pressure drops in a two-stage evaporation installation |
| CN2585995Y (en) * | 2002-12-17 | 2003-11-12 | 金持中 | Aerated water jetting vacuum extractor for tech of urea prodn. |
| CN1544417A (en) * | 2003-11-19 | 2004-11-10 | 四川美丰化工股份有限公司 | Vaporizing system vacuumizing method for urea production |
| CN101963470A (en) * | 2010-10-27 | 2011-02-02 | 河南心连心化肥有限公司 | Heat utilization device for urea intermediate-pressure production system |
| CN202289497U (en) * | 2011-11-07 | 2012-07-04 | 毕节金河化工有限公司 | Urea solution evaporating and concentrating equipment |
-
2011
- 2011-11-07 CN CN2011103481438A patent/CN102389639A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3954566A (en) * | 1974-01-25 | 1976-05-04 | Vereinigte Edelstahlwerke Ag | Apparatus for compensating pressure drops in a two-stage evaporation installation |
| CN2585995Y (en) * | 2002-12-17 | 2003-11-12 | 金持中 | Aerated water jetting vacuum extractor for tech of urea prodn. |
| CN1544417A (en) * | 2003-11-19 | 2004-11-10 | 四川美丰化工股份有限公司 | Vaporizing system vacuumizing method for urea production |
| CN101963470A (en) * | 2010-10-27 | 2011-02-02 | 河南心连心化肥有限公司 | Heat utilization device for urea intermediate-pressure production system |
| CN202289497U (en) * | 2011-11-07 | 2012-07-04 | 毕节金河化工有限公司 | Urea solution evaporating and concentrating equipment |
Non-Patent Citations (1)
| Title |
|---|
| 姚淑香，裴建存: "水喷射器在尿素蒸发***中的应用", 《化工设计通讯》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112742047A (en) * | 2020-12-31 | 2021-05-04 | 安徽六国化工股份有限公司 | Method and device for pumping negative pressure of urea production evaporation system |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120328 |