CN202411026U - Washing device of two-section evaporation separator in urea production system - Google Patents
Washing device of two-section evaporation separator in urea production system Download PDFInfo
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- CN202411026U CN202411026U CN2012200108065U CN201220010806U CN202411026U CN 202411026 U CN202411026 U CN 202411026U CN 2012200108065 U CN2012200108065 U CN 2012200108065U CN 201220010806 U CN201220010806 U CN 201220010806U CN 202411026 U CN202411026 U CN 202411026U
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- wash tub
- separator
- tub pipe
- pipe
- phase outlet
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Abstract
The utility model discloses a washing device of a two-section evaporation separator in a urea production system, wherein an annular washing water pipe (3) is arranged at the top of a separator (1) and is connected with a washing water pipeline (32). A plurality of washing water holes (31) facing the inner wall of the top of the separator (1) are evenly arranged on the pipe wall of the annular washing water pipe (3). A vertical washing water pipe (4) used for washing the vertical portion of a gas phase outlet pipe (2), a transverse washing water pipe (5) used for washing the transverse portion of the gas phase outlet pipe (2) and an arc washing water pipe (6) used for washing the arc portion of the gas phase outlet pipe (2) are arranged on the gas phase outlet pipe (2) connected with the separator. The washing device of the two-section evaporation separator in the urea production system effectively prevents accumulation of biuret, prolongs operation period of equipment, increases evaporation load and improves product quality.
Description
Technical field
The utility model relates to the flusher of dual circulation separator in a kind of carbamide production system, relates in particular to a kind of device that is used for washing the materials such as biuret that the dual circulation separator accumulates.
Background technology
The heating and decomposition of carrying urea synthesis reaction liquid process gas, reduce pressure circulates, and with the unreacted reactant after separating, obtains purer aqueous solution of urea, wherein, and content of urea 70%～75% (mass number), NH
3And CO
2The content sum also contains a large amount of water and a spot of ammonia and carbon dioxide in the aqueous solution of urea about 1%.Therefore must further be condensed into the few molten state urea of water content through evaporization process, make its concentration reach urea liquid pure more than 96%, be sent to granulating system then and carry out granulation.If evaporation adopts higher temperature that the Biuret Content in the urea is increased, thus vacuum adopted, to reduce the boiling point of solution.
Generally carry more urea droplet in the existing urea production system in the indirect steam of evaporation equipment secretly, cause in the ammoniacal liquor storage tank urea content higher thus, bring certain pressure for hydrolysis system recoveries urea.And urea easily at the vapor seperator top and the outlet line place accumulate; And at this further reaction generation biuret; Biuret is cumulative, and the vacuum of equipment does not just reach production requirement, makes that moisture raises in the finished product; Even have influence on the ordinary production of vapo(u)rization system, cause system's Reduction of Students' Study Load lotus operation.At this moment, must stop to vaporising device, heat boils processing, makes labor intensity of operating personnel big, and the bad control of end product quality.
Summary of the invention
The purpose of the utility model is to provide a kind of device that washes the materials such as biuret that accumulate in the dual circulation separator, solves because of biuret and accumulates in the production hidden danger of being brought in separator top and the pipeline of giving vent to anger.
The concrete technical scheme of the flusher of dual circulation separator is in a kind of carbamide production system of the utility model:
The flusher of dual circulation separator in a kind of carbamide production system; Wherein, The top of separator is provided with the ring-type wash tub pipe; The ring-type wash tub pipe links to each other with the flushing water pipeline; Evenly offer a plurality of flushing water holes towards the separator top inner wall on the tube wall of ring-type wash tub pipe, the gaseous phase outlet pipe that links to each other with separator is provided with the arc of arcuation part of horizontal wash tub pipe and flushing gas phase outlet of lateral part of vertical wash tub pipe, flushing gas phase outlet of the longitudinal component of flushing gas phase outlet to wash tub pipe.
In addition, vertically wash tub pipe, horizontal wash tub pipe and arc are provided with the keying valve to wash tub pipe.Arc also is provided with control valve on wash tub pipe.
The aperture in the flushing water hole on the tube wall of ring-type wash tub pipe is 5mm.
The flusher of the utility model is through adding annular wash tub pipe at the separator top; On the gaseous phase outlet pipe, add three groups of wash tub pipes; And on the flushing water pipeline, install control valve additional, improved labor productivity, reach the purpose that has reduced teams and groups' labor intensity of operating staff.And, the service cycle of accumulating, prolong equipment of biuret, the purpose that increases evaporation load, improves the quality of products have been realized preventing through technological transformation to urea plant dual circulation separator.
Description of drawings
Fig. 1 is the mounting structure sketch map of the flusher of the utility model;
Fig. 2 is the structural representation of the annular wash tub pipe in the flusher of the utility model.
The specific embodiment
In order better to understand purpose, structure and the function of the utility model,, the flusher of dual circulation separator in a kind of carbamide production system of the utility model is done further detailed description below in conjunction with accompanying drawing.
As shown in Figure 1, the dual circulation separator 1 in the existing urea production system is generally cylindrical, is connected with gaseous phase outlet pipe 2 at the top of separator 1, and gaseous phase outlet pipe 2 is generally U type pipe.Aqueous solution of urea carries out water vapour in separator 1 separates, so that obtain the few molten state urea liquid of water content.
But from separator 1 isolated steam, generally carry more urea droplet secretly at present, in separator 1 top and gas phase outlet 2, accumulate easily, and react materials such as generating biuret, influence the result of use of equipment.The flusher of the utility model is mainly used in the top and the gaseous phase outlet pipe 2 that links to each other with separator 1 of flushing separator 1, prevents accumulating of material such as biuret, guarantees normally carrying out of production.
As shown in Figure 1; The flusher of dual circulation separator mainly comprises the annular wash tub pipe 3 that is arranged on separator 1 top and is arranged on the vertical wash tub pipe 4 on the gaseous phase outlet pipe 2, horizontal wash tub pipe 5 in the carbamide production system of the utility model, and arc is to wash tub pipe 6.
Wherein, Annular wash tub pipe 3 is mainly used in the top of flushing separator 1; Prevent that materials such as urea, biuret from accumulating at the top of separator 1; Vertically wash tub pipe 4, horizontal wash tub pipe 5 and arc then are mainly used in flushing gas phase outlet 2 to wash tub pipe 6, accumulate in gaseous phase outlet pipe 2 so that prevent materials such as urea, biuret.
Specifically; As shown in Figure 2, be arranged on the annular wash tub pipe 3 at separator 1 top and the shape approximation of separator 1, offer the flushing water hole 31 of a plurality of circles on the tube wall of annular wash tub pipe 3; A plurality of flushings water hole 31 is evenly distributed on the tube wall of annular wash tub pipe 3; And the opening in flushing water hole 31 is used for flushing water is ejected into the top inner wall of separator 1 towards the top inner wall of separator 1, to realize the purpose of materials such as flushing urea, biuret.The size in the flushing water hole 31 on the tube wall of annular wash tub pipe 3 can be provided with as the case may be flexibly, and in the present embodiment, the aperture in flushing water hole 31 is made as 5mm.
In addition; Be connected with flushing water pipeline 32 on the annular wash tub pipe 3 in the flusher of the utility model; Flushing water pipeline 32 joins with flushing water source (not shown); Be used for flushing water is transported to annular wash tub pipe 3, so that flushing water sprays from the flushing water hole 31 on the tube wall of annular wash tub pipe 3.
As shown in Figure 1, be arranged on the vertical wash tub pipe 4 on the gaseous phase outlet pipe 2, horizontal wash tub pipe 5 and arc and directly join with flushing water source (not shown) to wash tub pipe 6, be used for flushing water is ejected into gaseous phase outlet pipe 2, realize washing purpose.Vertical wash tub pipe 4 in the utility model, laterally wash tub pipe 5 and arc can adopt the form of wash tub pipe commonly used in the prior art to wash tub pipe 6.
Wherein, vertically wash tub pipe 4 is used to wash the longitudinal component of gas phase outlet 2, and laterally wash tub pipe 5 is used to wash the lateral part of gas phase outlet 2, and arc then is used to wash the arcuation part of gas phase outlet 2 to wash tub pipe 6.Thus, through vertical wash tub pipe 4, laterally wash tub pipe 5 and arc can perfectly be realized the flushing to whole gaseous phase outlet pipe 2 to being used just of wash tub pipe 6.
In addition; Be convenient control to wash tub pipe; At vertical wash tub pipe 4, laterally wash tub pipe 5 and arc can be provided with and open and close valve 7, open and close that valve 7 is used to control vertical wash tub pipe 4, laterally wash tub pipe 5 and arc be to the opening and closing of wash tub pipe 6 on wash tub pipe 6.In addition, on wash tub pipe 6, also control valve 8 can be provided with, flushing can be better realized the arcuation part of gaseous phase outlet pipe 2 through the keying degree that controls to adjust valve 8 at arc.
Actual operating mode according to evaporation equipment in the carbamide production system; Can control the washing time and the number of times of each wash tub pipe in the flusher of the utility model flexibly; Preferably; Annular wash tub pipe 3 changes evaporation at system shutdown and plays circulation time flushing, vertically wash tub pipe 4 and horizontal wash tub pipe 5 flushings in per four hours once, then wash once by each hour to wash tub pipe 6 for arc.
Below for adopting the forward and backward system operational parameters of flusher of the utility model
Can find out that by last table behind the flusher of installing the utility model in the separator, it is fine that two sections vacuum of equipment keep; The influence that product quality receives is little; High-grade-goods rate obviously rises, and heat is boiled number of times and also reduced a lot, and the urea content of ammonia vessel also obviously descends; Alleviate the burden of hydrolysis system, fundamentally solved the problem that existing equipment exists.
More than by specific embodiment the utility model is further described; But it should be understood that; Here concrete description; Should not be construed as the qualification to the essence and the scope of the utility model, the various modifications that the one of ordinary skilled in the art makes the foregoing description after reading this specification all belong to the scope that the utility model is protected.
Claims (4)
1. the flusher of dual circulation separator in the carbamide production system; It is characterized in that; The top of separator (1) is provided with ring-type wash tub pipe (3); Ring-type wash tub pipe (3) links to each other with flushing water pipeline (32); Evenly offer a plurality of flushing water holes (31) towards separator (1) top inner wall on the tube wall of ring-type wash tub pipe (3), the gaseous phase outlet pipe (2) that links to each other with separator (1) is provided with the arcuation arc partly of horizontal wash tub pipe (5) and flushing gas phase outlet (2) of lateral part of vertical wash tub pipe (4), flushing gas phase outlet (2) of the longitudinal component of flushing gas phase outlet (2) to wash tub pipe (6).
2. the flusher of dual circulation separator is characterized in that in the carbamide production system according to claim 1, and vertically wash tub pipe (4), horizontal wash tub pipe (5) and arc are provided with to wash tub pipe (6) and open and close valve (7).
3. the flusher of dual circulation separator is characterized in that in the carbamide production system according to claim 2, and arc is provided with control valve (8) to wash tub pipe (6).
4. the flusher of dual circulation separator is characterized in that in the carbamide production system according to claim 1, and the aperture in the flushing water hole (31) on the tube wall of ring-type wash tub pipe (3) is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200108065U CN202411026U (en) | 2012-01-10 | 2012-01-10 | Washing device of two-section evaporation separator in urea production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200108065U CN202411026U (en) | 2012-01-10 | 2012-01-10 | Washing device of two-section evaporation separator in urea production system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202411026U true CN202411026U (en) | 2012-09-05 |
Family
ID=46735823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200108065U Expired - Fee Related CN202411026U (en) | 2012-01-10 | 2012-01-10 | Washing device of two-section evaporation separator in urea production system |
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| CN (1) | CN202411026U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103191878A (en) * | 2012-01-10 | 2013-07-10 | 内蒙古鄂尔多斯联合化工有限公司 | Flushing device and method for two-stage evaporation separator of urea production system |
-
2012
- 2012-01-10 CN CN2012200108065U patent/CN202411026U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103191878A (en) * | 2012-01-10 | 2013-07-10 | 内蒙古鄂尔多斯联合化工有限公司 | Flushing device and method for two-stage evaporation separator of urea production system |
| CN103191878B (en) * | 2012-01-10 | 2015-11-25 | 内蒙古鄂尔多斯联合化工有限公司 | The flusher of dual circulation separator and method in carbamide production system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20140110 |