CN203990536U - A kind of hydrolysis of urea reactor outlet demister - Google Patents
A kind of hydrolysis of urea reactor outlet demister Download PDFInfo
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- CN203990536U CN203990536U CN201420397125.8U CN201420397125U CN203990536U CN 203990536 U CN203990536 U CN 203990536U CN 201420397125 U CN201420397125 U CN 201420397125U CN 203990536 U CN203990536 U CN 203990536U
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Abstract
A kind of hydrolysis of urea reactor outlet of the utility model demister comprises cylindrical shell, and series connection is arranged on its cyclone defroster section of being separated by toroidal membrane and silk screen demist section in cylindrical shell successively; The setting of hydrolysis of urea reactor outlet is stretched in cylindrical shell lower end, and upper end forms gaseous phase outlet and fixes with hydrolysis of urea reactor outlet; Silk screen demist section outlet side is communicated with gaseous phase outlet, and inlet end connects the exhaust end of cyclone defroster section; The air inlet of cyclone defroster section is arranged on the sidewall of cylindrical shell, and the leakage fluid dram of cyclone defroster section lower end stretches into liquid level in hydrolysis of urea reactor and arranges below.By adopting two-stage series connection device to carry out demist, the first order is the separated large drop of cyclone type demist, and the second level is the separated droplet of silk screen demist; By cyclone defroster section exit flow, in the mode of rotational flow, enter silk screen demist section, increased the movement locus length of air-flow in silk screen demist section, improved silk screen demist section except fog effect, obtain better comprehensively except fog effect, demist ability is stronger.
Description
Technical field
The utility model belongs to gas denitrifying technology field, relates to a kind of hydrolysis of urea reactor outlet demister.
Background technology
Hydrolysis of urea legal system, for ammonia, is a kind of reducing agent preparation technology in coal steam-electric plant smoke SCR denitrating technique.Its principle be urea liquid in hydrolysis reactor, under uniform temperature and pressure, there is hydrolysis and generate ammonia and carbon dioxide.After ammonia, carbon dioxide and the part steam generating leaves hydrolysis reactor, send into boiler flue, carry out denitration reaction.Hydrolysis reactor inner space is divided into bottom liquid Space and upper gaseous phase space, due to the violent boiling of liquid Space, makes vapor phase space except being full of the steam of product ammonia, carbon dioxide and part evaporation, is also mingled with a large amount of droplets.Droplet composition and hydrolysis liquid phase are same, are dissolved with part urea.If droplet is followed hydrolysate and is left together hydrolysis reactor and enter subsequent technique flow process, variation due to factors such as subsequent technique operating pressure in the flowlines, can cause droplet vaporization, the urea being dissolved in droplet can crystallization, blocking pipe and equipment.Therefore must try one's best and reduce the droplet quantity of leaving hydrolysis reactor.
In industry, conventional technology is, in the outlet of hydrolysis reactor product, mesh mist eliminator is set at present, as shown in Figure 1, on the one hand because the medium and small droplet content of gas phase is large, be subject to the restriction of mesh mist eliminator self demist ability, unsatisfactory except fog effect, remove fog effect and cannot improve.Current mesh mist eliminator is taked built-in fixed structure on the other hand, after occurring to stop up, is difficult for maintenance and changes.
Utility model content
For problems of the prior art, the utility model provides a kind of operating efficiency high, keeps in repair and change hydrolysis of urea reactor outlet demister easily.
The utility model is to be achieved through the following technical solutions:
Hydrolysis of urea reactor outlet demister comprises a cylindrical shell, and series connection is arranged on its cyclone defroster section of being separated by toroidal membrane and silk screen demist section in cylindrical shell successively; The setting of hydrolysis of urea reactor outlet is stretched in cylindrical shell lower end, and upper end forms gaseous phase outlet and fixes with hydrolysis of urea reactor outlet; Silk screen demist section outlet side is communicated with gaseous phase outlet, and inlet end connects the exhaust end of cyclone defroster section; The air inlet of cyclone defroster section is arranged on the sidewall of cylindrical shell, and the leakage fluid dram of cyclone defroster section lower end stretches into liquid level in hydrolysis of urea reactor and arranges below.
Preferably, on the cylinder inboard wall between cyclone defroster section and silk screen demist section, be provided with toroidal membrane.
Preferably, the lower surface of silk screen demist section is inverted cone surface setting.
Further, the bottom center of silk screen demist section is provided with the steady scroll bar that extends to leakage fluid dram.
Preferably, air inlet is symmetricly set on the sidewall with the corresponding cylindrical shell of cyclone defroster section, and the inner circle of the airintake direction of air inlet and its place cylindrical shell is tangent.
Further, be provided with and be spiral-distributed guide vane in leakage fluid dram, the hand of spiral of guide vane is identical with air-flow rotation direction in cyclone defroster section.
Preferably, cylindrical shell upper end articulates fixing by outlet(discharge) flange and the hydrolysis of urea reactor outlet arranging.
Compared with prior art, the utlity model has following useful technique effect:
The utility model is by adopting two-stage series connection device to carry out demist, and the first order is the large drop of cyclone type demist in can separation bubble, and the second level is the droplet in silk screen demist separation bubble; By cyclone defroster section exit flow, in the mode of rotational flow, enter silk screen demist section, thereby increased the movement locus length of air-flow in silk screen demist section, improved the fog effect that removes of silk screen demist section, and then obtain better comprehensive except fog effect, demist ability is stronger, the integral body of equipment is compared existing design except fog effect and is greatly improved, and the gas band liquid measure after demister reduces more than 50%; By by original built-in fixedly mesh mist eliminator structure, change two-stage series connection integral type insert structure into simultaneously, facilitated inspection and maintenance.
Further, by arranging of toroidal membrane, increase the swirl strength of cyclonic separation region vortex core, strengthened the separating effect to large water droplet, can realize relative space isolation to silk screen demist section and cyclone defroster section simultaneously, improved separating effect.
Further, by the inverted cone surface of silk screen demist section lower end is arranged, increase mesh mist eliminator and the initial contact area flowing containing fog, improved silk screen demist section dirty removal capacities.On the other hand, the liquid of being collected by mesh mist eliminator is easy to, being enriched in cone segments bottom and getting rid of in time, better improve silk screen demist section dirty removal capacities.
Further, utilize and be arranged on the steady scroll bar in silk screen demist section lower end, can stablize the vortex core of swirling eddy, reduce vortex core end precession effect, improve the separative efficiency of cyclone defroster section; Steady scroll bar can be guided to the collection liquid that is enriched in mesh mist eliminator cone segments bottom demister bottom discharge on the other hand, improves again the separative efficiency of silk screen demist section.
Further, by being symmetrical arranged of air inlet make air-flow when entering by the restriction of air inlet, can be voluntarily in cyclone defroster section, form eddy current and improve separating effect.
Further, by flowing into urea liquid in hydrolysis reactor after the guide vane guiding arranging, can reduce and collect the disturbance of liquid to solution in hydrolysis reactor, minimizing is splashed, and has reduced the liquid content in air-flow.
Further, the quick-fit by the flange realization in the setting of cylindrical shell upper end with reactor outlet, the efficiency that has improved maintenance and changed.
Accompanying drawing explanation
Fig. 1 is hydrolysis of urea reactor outlet mesh mist eliminator structural representation in prior art.
Fig. 2 is the use state diagram of demister described in this patent example.
Fig. 3 is the structural representation of demister described in this patent example.
Fig. 4 is that the A-A of Fig. 3 is to cutaway view.
In figure: cyclone defroster section 1, silk screen demist section 2, air inlet 3, gaseous phase outlet 4, orchid 5, leakage fluid dram 6, guide vane 7, cylindrical shell 10 are sent out in outlet.
The specific embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail, described in be to explanation of the present utility model rather than restriction.
A kind of hydrolysis of urea reactor outlet of the utility model demister, as shown in Figure 3, it comprises cylindrical shell 10, and series connection is arranged on its cyclone defroster section 1 of being separated by toroidal membrane 9 and silk screen demist section 2 in cylindrical shell 10 successively; The setting of hydrolysis of urea reactor outlet is stretched in cylindrical shell 10 lower ends, and upper end forms gaseous phase outlet 4 and fixes with hydrolysis of urea reactor outlet; Described silk screen demist section 2 outlet sides are communicated with gaseous phase outlet 4, and inlet end connects the exhaust end of cyclone defroster section 1; The air inlet 3 of cyclone defroster section 1 is arranged on the sidewall of cylindrical shell 10, and the leakage fluid dram 6 of cyclone defroster section 1 lower end stretches into liquid level in hydrolysis of urea reactor and arranges below.Wherein, as shown in Figure 3, the lower surface of silk screen demist section 2 is inverted cone surface setting, and bottom center is provided with the steady scroll bar 8 that extends to leakage fluid dram 6.As shown in Figure 3, air inlet 3 is symmetricly set on the sidewall with the corresponding cylindrical shell 10 of cyclone defroster section 1, and as shown in Figure 4, the inner circle of the airintake direction of air inlet 3 and its place cylindrical shell 10 is tangent.As shown in Figure 3 and Figure 4, be provided with and be spiral-distributed guide vane 7 in leakage fluid dram 6, the hand of spiral of guide vane 7 is identical with air-flow rotation direction in cyclone defroster section 1.As shown in Figure 3, cylindrical shell 10 upper ends articulate fixing by the outlet(discharge) flange 5 arranging with hydrolysis of urea reactor outlet.
When the utility model is used, as shown in Figure 2, the utility model is articulated fixing by outlet(discharge) flange 5 and hydrolysis of urea reactor outlet, and be bolted; The mist that the steam of hydrolysis of urea generates in hydrolysis of urea reactor ammonia, carbon dioxide and partial gasification forms carries droplet and is entered in cyclone defroster section 1 by air inlet 3, in cyclone defroster section 1, rotate, the drop of greater particle size is under the effect of centrifugal force, be thrown on the wall of cyclone defroster section 1, under the effect of gravity and downdraught, by leakage fluid dram 6, discharged, and under the effect of guide vane 7, without getting back in hydrolysis of urea reactor of splashing.Mixed air and granule drop upwards enter in silk screen demist section 2 via cyclone defroster section 1, and it is separated that droplet is screw in silk screen demist section 2, and the mist after demist leaves hydrolysis reactor through gaseous phase outlet 4 and enters subsequent processing; In silk screen demist section 2, the separated drop conical surface in bottom collects and discharges through steady scroll bar 8 guiding, and steady scroll bar 8 has played the effect at the interior eddy current of stable cylindrical shell 10 center simultaneously, has improved whole separating effect; The integral body of equipment is compared former design except fog effect and is greatly improved, and the gas band liquid measure after demister reduces more than 50%.
The mode that the utility model is implemented is not only limited to this.
Claims (7)
1. a hydrolysis of urea reactor outlet demister, is characterized in that, comprises cylindrical shell (10), and series connection is arranged on cyclone defroster section (1) and the silk screen demist section (2) in cylindrical shell (10) successively; The setting of hydrolysis of urea reactor outlet is stretched in described cylindrical shell (10) lower end, and upper end forms gaseous phase outlet (4) and fixes with hydrolysis of urea reactor outlet; Described silk screen demist section (2) outlet side is communicated with gaseous phase outlet (4), and inlet end connects the exhaust end of cyclone defroster section (1); The air inlet (3) of described cyclone defroster section (1) is arranged on the sidewall of cylindrical shell (10), and the leakage fluid dram (6) of cyclone defroster section (1) lower end stretches into liquid level in hydrolysis of urea reactor and arranges below.
2. a kind of hydrolysis of urea reactor outlet demister according to claim 1, is characterized in that, on cylindrical shell (10) inwall between cyclone defroster section (1) and silk screen demist section (2), is provided with toroidal membrane (9).
3. a kind of hydrolysis of urea reactor outlet demister according to claim 1, is characterized in that, the lower surface of silk screen demist section (2) is inverted cone surface setting.
4. according to a kind of hydrolysis of urea reactor outlet demister described in claim 1 or 3, it is characterized in that, the bottom center of silk screen demist section (2) is provided with the steady scroll bar (8) that extends to leakage fluid dram (6).
5. a kind of hydrolysis of urea reactor outlet demister according to claim 1, it is characterized in that, described air inlet (3) is symmetricly set on the sidewall with the corresponding cylindrical shell of cyclone defroster section (1) (10), and the inner circle of the airintake direction of air inlet (3) and its place cylindrical shell (10) is tangent.
6. a kind of hydrolysis of urea reactor outlet demister according to claim 1 or 5, it is characterized in that, in described leakage fluid dram (6), be provided with and be spiral-distributed guide vane (7), the hand of spiral of guide vane (7) is identical with air-flow rotation direction in cyclone defroster section (1).
7. a kind of hydrolysis of urea reactor outlet demister according to claim 1, is characterized in that, described cylindrical shell (10) upper end articulates fixing by the outlet(discharge) flange (5) arranging with hydrolysis of urea reactor outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420397125.8U CN203990536U (en) | 2014-07-17 | 2014-07-17 | A kind of hydrolysis of urea reactor outlet demister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420397125.8U CN203990536U (en) | 2014-07-17 | 2014-07-17 | A kind of hydrolysis of urea reactor outlet demister |
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| Publication Number | Publication Date |
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| CN203990536U true CN203990536U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420397125.8U Expired - Fee Related CN203990536U (en) | 2014-07-17 | 2014-07-17 | A kind of hydrolysis of urea reactor outlet demister |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096512A (en) * | 2014-07-17 | 2014-10-15 | 中国华能集团公司 | Demister at urea hydrolysis reactor outlet |
| CN108654222A (en) * | 2018-05-30 | 2018-10-16 | 芜湖岭上信息科技有限公司 | A kind of separator for gas-liquid |
-
2014
- 2014-07-17 CN CN201420397125.8U patent/CN203990536U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096512A (en) * | 2014-07-17 | 2014-10-15 | 中国华能集团公司 | Demister at urea hydrolysis reactor outlet |
| CN108654222A (en) * | 2018-05-30 | 2018-10-16 | 芜湖岭上信息科技有限公司 | A kind of separator for gas-liquid |
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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: 20141210 Termination date: 20170717 |