CN107449288A - A kind of ammonia vaporizer and its method of work - Google Patents
A kind of ammonia vaporizer and its method of work Download PDFInfo
- Publication number
- CN107449288A CN107449288A CN201710686644.4A CN201710686644A CN107449288A CN 107449288 A CN107449288 A CN 107449288A CN 201710686644 A CN201710686644 A CN 201710686644A CN 107449288 A CN107449288 A CN 107449288A
- Authority
- CN
- China
- Prior art keywords
- ammonia
- heat
- exchanging segment
- heat exchanging
- bobbin carriage
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
- F28B1/02—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using water or other liquid as the cooling medium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/007—Auxiliary supports for elements
Abstract
The present invention relates to a kind of ammonia vaporizer and its method of work, the ammonia vaporizer includes bobbin carriage, heat exchanging segment and the vaporization section set gradually from bottom to top；The bobbin carriage bottom sets drain, and middle part sets liquefied ammonia entrance；Heat exchanging segment is made up of tube sheet, heat exchanger tube and shell-side cylinder, separated respectively by upper and lower 2 tube sheets between heat exchanging segment and vaporization section, bobbin carriage, heat exchanger tube is vertically arranged in the shell-side cylinder of heat exchanging segment, and through the tube sheet connection vaporization section of top, lower end passes through the tube sheet connection bobbin carriage of lower section for its upper end；The bottom side of shell-side cylinder sets steam inlet, and top opposite side sets condensation-water drain；Pars infrasegmentalis is vaporized as cone section, top sets ammonia outlet, relief valve connection and pressure tap.Ammonia vaporizer of the present invention has the advantages of equipment volume is small, in light weight, liquid ammonia vaporization effect is good and safe.
Description
Technical field
The present invention relates to liquid ammonia vaporization technical field, more particularly to one kind to be used for liquefied ammonia vapour in flue gases of cock oven denitrating technique
The ammonia vaporizer of change.
Background technology
The ammonia of a large amount of high-purities is needed to be used for nitrogen oxidation exceeded in purification flue gas in flue gases of cock oven denitrating technique
Thing, the ammonia of high-purity needs to be vaporized via liquefied ammonia, to meet the needs of flue gas denitrating technique.But currently used ammonia
The problem of vapourizing unit generally existing equipment volume is big, liquid ammonia vaporization effect difference and security is low.
The content of the invention
The invention provides a kind of ammonia vaporizer and its method of work, the ammonia vaporizer has that equipment volume is small, weight
Gently, the advantages of liquid ammonia vaporization effect is good and safe.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of ammonia vaporizer, including bobbin carriage, heat exchanging segment and the vaporization section set gradually from bottom to top；The bobbin carriage bottom is set
Drain, middle part set liquefied ammonia entrance；Heat exchanging segment is made up of tube sheet, heat exchanger tube and shell-side cylinder, heat exchanging segment and vaporization section, bobbin carriage it
Between separated respectively by upper and lower 2 tube sheets, heat exchanger tube is vertically arranged in the shell-side cylinder of heat exchanging segment, and its upper end passes through top
Tube sheet connection vaporization section, lower end through lower section tube sheet connection bobbin carriage；The bottom side of shell-side cylinder sets steam inlet, top
Opposite side sets condensation-water drain；Pars infrasegmentalis is vaporized as cone section, top sets ammonia outlet, relief valve connection and pressure tap.
The inwall of the heat exchanger tube is loose structure.
Bearing is set on the outside of shell-side cylinder in the middle part of the heat exchanging segment, for ammonia vaporizer integrally fixed support.
A kind of method of work of ammonia vaporizer, comprises the following steps；
1) when being vaporized to liquefied ammonia, liquefied ammonia enters bobbin carriage by liquefied ammonia entrance, afterwards into inside the heat exchanger tube of heat exchanging segment,
Exchanged heat with the steam condensate (SC) outside heat exchanger tube；
2) steam enters heat exchanging segment by the steam inlet of heat exchanging segment bottom, heat exchange occurs with condensed water, and condense into
Condensed water, unnecessary condensed water are discharged from the condensation-water drain at the top of heat exchanging segment；
3) the liquefied ammonia temperature that heat is absorbed after exchanging heat exceedes saturation temperature under corresponding pressure, into saturation boiling state,
Due to the loose structure of heat transfer tube wall, heat transfer coefficient is significantly increased, makes boiling more violent, liquid ammonia vaporization is rapider；
4) the ammonia vapour entrainment of liquefied ammonia droplet enters vaporization section, and liquefied ammonia droplet is again introduced into and changed in vaporization section free settling
Continue to exchange heat in heat pipe；Ammonia then enters subsequent cell by the ammonia outlet at the top of vaporization section.
The heat exchanger tube is heated using water-bath mode.
Compared with prior art, the beneficial effects of the invention are as follows：
1) heat exchanging segment of ammonia vaporizer substantially increases heat transfer temperature difference using steam as thermal source；
2) heating heat exchanger tube is carried out using water-bath mode, steam condensation latent heat can be made full use of；
3) heat transfer inside pipe wall uses loose structure, can reduce the temperature difference needed for boiling, and greatly improve boiling heat transfer system
Number；
4) vaporization section is located above heat exchanging segment, and is connected by boring section, can expand liquid ammonia vaporization space, greatly reduce gas
The overheat liquefied ammonia droplet carried secretly in phase, prevent the entrainment of liquefied ammonia droplet from causing frosting into subsequent pipeline.
Brief description of the drawings
Fig. 1 is a kind of structural representation of ammonia vaporizer of the present invention.
Fig. 2 is heat transfer tube wall structural representation of the present invention.
In figure：1. the vaporization section 8. of 6. condensation-water drain of bobbin carriage 2. liquefied ammonia entrance, 3. tube sheet, 4. heat exchanging segment, 5. bearing 7.
The drain of 13. steam inlet of the pressure tap 11. of 9. ammonia outlet of relief valve connection 10. cone 12. heat exchanger tube of section 14.
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of ammonia vaporizer of the present invention, including bobbin carriage 1, the heat exchanging segment 4 set gradually from bottom to top
With vaporization section 7；The bottom of bobbin carriage 1 sets drain 14, and middle part sets liquefied ammonia entrance 2；Heat exchanging segment 4 is by tube sheet 3, heat exchanger tube 12 and shell
Journey cylinder forms, and is separated respectively by upper and lower 2 tube sheets 3 between heat exchanging segment 4 and vaporization section 7, bobbin carriage 1, heat exchanger tube 12 is set vertically
Put in the shell-side cylinder of heat exchanging segment 4, the tube sheet 3 of its upper end through top connects vaporization section 4, and lower end passes through the tube sheet 3 of lower section
Connect bobbin carriage 1；The bottom side of shell-side cylinder sets steam inlet 13, and top opposite side sets condensation-water drain 6；The bottom of vaporization section 7
To bore section 11, top sets ammonia outlet 9, relief valve connection 8 and pressure tap 10.
As shown in Fig. 2 the inwall of the heat exchanger tube 12 is loose structure.
Bearing 5 is set on the outside of the shell-side cylinder at the middle part of heat exchanging segment 4, for ammonia vaporizer integrally fixed support.
A kind of method of work of ammonia vaporizer, comprises the following steps；
1) when being vaporized to liquefied ammonia, liquefied ammonia enters bobbin carriage 1 by liquefied ammonia entrance 2, afterwards into the heat exchanger tube 12 of heat exchanging segment 4
Steam condensate (SC) heat exchange outside inside, with heat exchanger tube 12；
2) steam enters heat exchanging segment 4 by the steam inlet 13 of the bottom of heat exchanging segment 4, heat exchange occurs with condensed water, and coagulate
Form condensed water, unnecessary condensed water is discharged from the condensation-water drain 6 at the top of heat exchanging segment 4；
3) the liquefied ammonia temperature that heat is absorbed after exchanging heat exceedes saturation temperature under corresponding pressure, into saturation boiling state,
Due to the loose structure of the inwall of heat exchanger tube 12, heat transfer coefficient is significantly increased, makes boiling more violent, liquid ammonia vaporization is more fast
Speed；
4) the ammonia vapour entrainment of liquefied ammonia droplet enters vaporization section 7, and liquefied ammonia droplet is again introduced into the free settling of vaporization section 7
Continue to exchange heat in heat exchanger tube 12；Ammonia then enters subsequent cell by the ammonia outlet 9 at the top of vaporization section 7.
The heat exchanger tube 12 is heated using water-bath mode.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (5)
1. a kind of ammonia vaporizer, it is characterised in that including the bobbin carriage, heat exchanging segment and vaporization section set gradually from bottom to top；It is described
Bobbin carriage bottom sets drain, and middle part sets liquefied ammonia entrance；Heat exchanging segment is made up of tube sheet, heat exchanger tube and shell-side cylinder, heat exchanging segment and vapour
Change and separated respectively by upper and lower 2 tube sheets between section, bobbin carriage, heat exchanger tube is vertically arranged in the shell-side cylinder of heat exchanging segment, thereon
The tube sheet through top is held to connect vaporization section, tube sheet connection bobbin carriage of the lower end through lower section；The bottom side of shell-side cylinder sets steaming
Vapour entrance, top opposite side set condensation-water drain；Pars infrasegmentalis is vaporized as cone section, top sets ammonia outlet, relief valve connection and pressure
Power meter interface.
2. a kind of ammonia vaporizer according to claim 1, it is characterised in that the inwall of the heat exchanger tube is loose structure.
3. a kind of ammonia vaporizer according to claim 1, it is characterised in that on the outside of the shell-side cylinder in the middle part of the heat exchanging segment
If bearing, for ammonia vaporizer integrally fixed support.
4. a kind of method of work of ammonia vaporizer as claimed in claim 1, it is characterised in that comprise the following steps；
1) when being vaporized to liquefied ammonia, liquefied ammonia enters bobbin carriage by liquefied ammonia entrance, afterwards into inside the heat exchanger tube of heat exchanging segment, with changing
Steam condensate (SC) heat exchange outside heat pipe；
2) steam enters heat exchanging segment by the steam inlet of heat exchanging segment bottom, heat exchange occurs with condensed water, and condense into condensation
Water, unnecessary condensed water are discharged from the condensation-water drain at the top of heat exchanging segment；
3) the liquefied ammonia temperature that heat is absorbed after exchanging heat exceedes saturation temperature under corresponding pressure, into saturation boiling state, due to
The loose structure of heat transfer tube wall, significantly increases heat transfer coefficient, makes boiling more violent, liquid ammonia vaporization is rapider；
4) the ammonia vapour entrainment of liquefied ammonia droplet enters vaporization section, and liquefied ammonia droplet is again introduced into heat exchanger tube in vaporization section free settling
Inside continue to exchange heat；Ammonia then enters subsequent cell by the ammonia outlet at the top of vaporization section.
5. the method for work of a kind of ammonia vaporizer according to claim 4, it is characterised in that the heat exchanger tube uses water-bath
Mode heats.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686644.4A CN107449288A (en) | 2017-08-11 | 2017-08-11 | A kind of ammonia vaporizer and its method of work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686644.4A CN107449288A (en) | 2017-08-11 | 2017-08-11 | A kind of ammonia vaporizer and its method of work |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107449288A true CN107449288A (en) | 2017-12-08 |
Family
ID=60492140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710686644.4A Pending CN107449288A (en) | 2017-08-11 | 2017-08-11 | A kind of ammonia vaporizer and its method of work |
Country Status (1)
| Country | Link |
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| CN (1) | CN107449288A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728969A (en) * | 2020-12-31 | 2021-04-30 | 广钢气体(深圳)有限公司 | Vaporizer with U-shaped tube bundle structure |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101855502A (en) * | 2008-01-11 | 2010-10-06 | 江森自控科技公司 | Heat exchanger |
| CN201643957U (en) * | 2010-01-28 | 2010-11-24 | 天津市奥利达设备工程技术有限公司 | Direct water blowing type liquid ammonia gasifier for steam water bath |
| CN201748462U (en) * | 2010-01-28 | 2011-02-16 | 天津市奥利达设备工程技术有限公司 | Sleeve type liquid ammonia vaporizer |
| CN203090497U (en) * | 2013-03-28 | 2013-07-31 | 成都锐思环保技术有限责任公司 | Steam heating large-evaporation-capacity horizontal liquid ammonia evaporator for flue gas denitrification |
| CN204051408U (en) * | 2014-07-15 | 2014-12-31 | 天津市奥利达燃气设备技术有限公司 | A kind of steam(-)coil formula ammoniacal liquor gasifier |
| CN205245853U (en) * | 2015-12-30 | 2016-05-18 | 石家庄合汇化工有限公司 | Ethylenediamine vaporizer |
| CN105890407A (en) * | 2016-05-31 | 2016-08-24 | 中冶焦耐工程技术有限公司 | Self-supporting type contracted-expanded tube heat exchanger and heat exchange method |
| CN207050490U (en) * | 2017-08-11 | 2018-02-27 | 中冶焦耐(大连)工程技术有限公司 | A kind of ammonia vaporizer |
| CN212721007U (en) * | 2020-06-15 | 2021-03-16 | 无锡苏阳化工装备有限公司 | Comprehensive vaporizer for heating vaporization |
-
2017
- 2017-08-11 CN CN201710686644.4A patent/CN107449288A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101855502A (en) * | 2008-01-11 | 2010-10-06 | 江森自控科技公司 | Heat exchanger |
| JP2011080756A (en) * | 2008-01-11 | 2011-04-21 | Johnson Controls Technology Co | Heat exchanger |
| CN201643957U (en) * | 2010-01-28 | 2010-11-24 | 天津市奥利达设备工程技术有限公司 | Direct water blowing type liquid ammonia gasifier for steam water bath |
| CN201748462U (en) * | 2010-01-28 | 2011-02-16 | 天津市奥利达设备工程技术有限公司 | Sleeve type liquid ammonia vaporizer |
| CN203090497U (en) * | 2013-03-28 | 2013-07-31 | 成都锐思环保技术有限责任公司 | Steam heating large-evaporation-capacity horizontal liquid ammonia evaporator for flue gas denitrification |
| CN204051408U (en) * | 2014-07-15 | 2014-12-31 | 天津市奥利达燃气设备技术有限公司 | A kind of steam(-)coil formula ammoniacal liquor gasifier |
| CN205245853U (en) * | 2015-12-30 | 2016-05-18 | 石家庄合汇化工有限公司 | Ethylenediamine vaporizer |
| CN105890407A (en) * | 2016-05-31 | 2016-08-24 | 中冶焦耐工程技术有限公司 | Self-supporting type contracted-expanded tube heat exchanger and heat exchange method |
| CN207050490U (en) * | 2017-08-11 | 2018-02-27 | 中冶焦耐(大连)工程技术有限公司 | A kind of ammonia vaporizer |
| CN212721007U (en) * | 2020-06-15 | 2021-03-16 | 无锡苏阳化工装备有限公司 | Comprehensive vaporizer for heating vaporization |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728969A (en) * | 2020-12-31 | 2021-04-30 | 广钢气体(深圳)有限公司 | Vaporizer with U-shaped tube bundle structure |
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