CN104762418A - Sugar boiling pot capable of recycling waste heat - Google Patents
Sugar boiling pot capable of recycling waste heat Download PDFInfo
- Publication number
- CN104762418A CN104762418A CN201510165458.7A CN201510165458A CN104762418A CN 104762418 A CN104762418 A CN 104762418A CN 201510165458 A CN201510165458 A CN 201510165458A CN 104762418 A CN104762418 A CN 104762418A
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- CN
- China
- Prior art keywords
- noncondensable gas
- condensable gas
- steam
- inlet
- pipe
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- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
- C13B25/00—Evaporators or boiling pans specially adapted for sugar juices; Evaporating or boiling sugar juices
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- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
- C13B25/00—Evaporators or boiling pans specially adapted for sugar juices; Evaporating or boiling sugar juices
- C13B25/02—Details, e.g. for preventing foaming or for catching juice
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- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
- C13B30/00—Crystallisation; Crystallising apparatus; Separating crystals from mother liquors ; Evaporating or boiling sugar juice
- C13B30/002—Evaporating or boiling sugar juice
-
- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
- C13B30/00—Crystallisation; Crystallising apparatus; Separating crystals from mother liquors ; Evaporating or boiling sugar juice
- C13B30/02—Crystallisation; Crystallising apparatus
Abstract
The invention discloses a sugar boiling pot capable of recycling waste heat. The sugar boiling pot comprises a pot bottom, a steam chamber and a steam drum, wherein the pot bottom is provided with a feed pipe and a massecuite outlet, a juice catcher and a juice steam outlet are formed in the steam chamber, a steam condensate drainage pipe, a heating steam inlet pipe and a non-condensable gas drainage pipe are arranged on the steam drum, and an outlet of the non-condensable gas drainage pipe is connected to the feed pipe; two non-condensable gas inlets, namely a non-condensable gas lower inlet and a non-condensable gas upper inlet, are formed in the non-condensable gas drainage pipe; the distance from the non-condensable gas lower inlet to a lower tube plate is 100-200mm; the non-condensable gas upper inlet is formed above an upper tube plate with a distance of 5-10mm; and a valve is arranged on the non-condensable gas drainage pipe and is used for controlling the on-off and quantity of the discharge of non-condensable gas. According to the sugar boiling pot disclosed by the invention, syrups or molasses can be heated by using the heat of the non-condensable gas, and the heat energy of the non-condensable gas can be recycled so as to ensure that the problem that the non-condensable gas is directly discharged to cause energy waste in a conventional sugar boiling process can be solved.
Description
Technical field
The present invention relates to a kind of boiling pan of recycling residual heat, belong to Sugar Engineering technical field.
Background technology
In sugar industry, sugarcane (or beet) obtains syrup after squeeze juice extracting, peace and quiet removal of impurities and evaporation concentration three operations, and syrup can obtain white sugar after cane sugar boiling and crystal.Boil the key link that sugar is sugaring process, important impact is had on the quality of product and full factory energy consumption, its main task is, in boiling pan (or claiming crystallizer), syrup or molasses are concentrated to certain degree of supersaturation, then crystal seed (magma or Icing Sugar) is dropped into, and crystal is brought up gradually, from obtaining the sucrose crystal meeting quality product requirement.
Boil sugar heating steam used mainly from an effect juice steam and two effect juice steams of evaporation section, its temperature is 110 DEG C ~ 120 DEG C, often containing more noncondensable gas in these juice vapour, these noncondensable gases can become after self heat can not being passed to material as water vapor vapour coagulate water from the vapour of boiling pan coagulate water out discharge, they can accumulate in steam drum, occupy the space of steam drum, formation one deck air film around heating tube, thus have impact on the exchange of heat, heat transfer coefficient is reduced greatly, thus reduces the working efficiency of boiling pan.Therefore, in time noncondensable gas must be got rid of from the steam drum of boiling pan in sugar boiling process, prevent it from producing detrimentally affect to sugar boiling process.
Boil sugar heating steam used (effect, two effect juice steams) all large than normal atmosphere, therefore at present the wipe-out mode of noncondensable gas is mainly in boiling pan heating chamber: not condensing body purger is installed in the place of concentrating at noncondensable gas, is directly discharged in air by noncondensable gas.Although the noncondensable gas in boiling pan heating chamber can be got rid of by this method, make to boil sugared concentration process and can obtain larger heat transfer coefficient, but the temperature and pressure of noncondensable gas is all higher, still containing more heat, it being directly discharged in air, is the significant wastage to the energy.Therefore, provide a kind of boiling pan of recycling residual heat to reclaim the heat energy boiling noncondensable gas in sugared heating steam to be necessary.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, a kind of boiling pan of recycling residual heat is provided, to reclaim the heat energy boiling noncondensable gas in sugared heating steam, solution is boiled noncondensable gas in sugared heating steam and is directly discharged in air, causes the problem of energy dissipation.
To achieve these goals, present invention employs following technical scheme:
A kind of boiling pan of recycling residual heat, comprise at the bottom of tank, steam chest and steam drum, feed-pipe and massecuite outlet is provided with at the bottom of tank, steam chest is provided with juice catching device and juice vapour outlet, steam drum is provided with vapour and coagulates water purger, heating steam inlet pipe and noncondensable gas purger, and the outlet of noncondensable gas purger is connected on feed-pipe.
Described noncondensable gas purger is provided with two noncondensable gas imports, is noncondensable gas lower inlet and noncondensable gas upper inlet respectively.
Described noncondensable gas lower inlet and the distance of lower tubesheet are 100 ~ 200mm.
Described noncondensable gas upper inlet is positioned at 5 ~ 10mm place above upper tubesheet.
Described noncondensable gas purger is provided with valve.
Compared with prior art, the beneficial effect that possesses of the present invention:
(1) outlet of the noncondensable gas purger of boiling pan is connected on feed-pipe by the present invention, the heat utilizing noncondensable gas to have adds hot molass or molasses, reclaim the heat energy of noncondensable gas, avoid traditional sugar boiling process and noncondensable gas is directly drained, cause the problem of energy dissipation.
(2) the present invention is provided with noncondensable gas lower inlet and upper inlet respectively according to the difference of noncondensable gas density, is conducive to the abundant eliminating of noncondensable gas.Noncondensable gas is made up of multiple gases, and the density ratio water vapor of some gas is large, and some is then little than the density of water vapor, and they can accumulate in the different sites of steam drum; The present invention is provided with venting port in the upper and lower part of steam drum (shell side), thus is conducive to the abundant eliminating of noncondensable gas; The distance of noncondensable gas lower inlet and lower tubesheet is 100 ~ 200mm, and the too little meeting of distance causes noncondensable gas lower inlet suction vapour to coagulate water, and distance is unfavorable for too greatly the eliminating of the noncondensable gas accumulating in steam drum bottom; In order to be beneficial to the eliminating of the noncondensable gas accumulating in steam drum top, noncondensable gas upper inlet 5 ~ 10mm higher than upper tubesheet.
(3) outlet of noncondensable gas purger is connected with feed-pipe by the present invention, and position is more reasonable.Comparatively large owing to boiling sugar heating steam (effect juice steam, two effect juice steams) pressure used, after opening the valve on noncondensable gas purger, noncondensable gas just can directly be injected in feed-pipe, the syrup in heating feed-pipe or molasses; If (steam chest) in boiling pan is directly inserted in the outlet of noncondensable gas purger, due to boil sugar the later stage, the raw material (syrup or molasses) that the viscosity of massecuite boils sugar is relatively much bigger, the eliminating of adding noncondensable gas is periodical operation, when noncondensable gas purger does not have noncondensable gas to discharge time, noncondensable gas purger is very easily caused to block.
(4) present device structure is simple, convenient and practical, rational technology, cost are lower, is conducive to promoting and using.
Accompanying drawing explanation
Fig. 1 is the boiling pan structural representation of recycling residual heat of the present invention.
In figure: 1-heating steam inlet pipe; 2-valve with sugar; 3-noncondensable gas lower inlet; 4-heating tube; 5-upper tubesheet; 6-noncondensable gas upper inlet; 7-steam chest; 8-juice catching device; 9-juice vapour outlet; 10-noncondensable gas purger; 11-valve; 12-material inlet; 13-noncondensable gas purger exports; 14-feed-pipe; 15-steam drum; 16-vapour coagulates water purger; 17-lower tubesheet; 18-massecuite exports; At the bottom of 19-tank.
Embodiment
Embodiment 1
A kind of boiling pan of recycling residual heat, to comprise at the bottom of tank 19, steam chest 7 and steam drum 15, at the bottom of tank, 19 are provided with feed-pipe 14 and massecuite outlet 18, steam chest 7 is provided with juice catching device 8 and juice vapour outlet 9, steam drum 15 is provided with vapour and coagulates water purger 16, heating steam inlet pipe 1 and noncondensable gas purger 10, and the outlet 13 of noncondensable gas purger is connected on feed-pipe 14.Described noncondensable gas purger 10 is provided with valve 11.When opening valve 11, noncondensable gas in steam drum 15 is sprayed onto in feed-pipe 14 through noncondensable gas purger 10, enter into steam chest 7 by feed-pipe 14 again, the secondary steam that last and sugar boiling process produces, taken away by be condensed device or vacuum pump of juice catching device 8, juice vapour outlet 9 successively.After noncondensable gas enters feed-pipe 14, contact with syrup or molasses, himself waste heat is passed to syrup or molasses.In the process, the heat utilizing noncondensable gas to have adds hot molass or molasses, reclaims the heat energy of noncondensable gas, avoids traditional sugar boiling process and directly drained by noncondensable gas, cause the problem of energy dissipation.Valve 11 be used for control noncondensable gas discharge switch and size.
Described noncondensable gas purger 10 is provided with two noncondensable gas imports, is noncondensable gas lower inlet 3 and noncondensable gas upper inlet 6 respectively.
Described noncondensable gas lower inlet 3 is 100 ~ 200mm with the distance of lower tubesheet 17.Cause noncondensable gas lower inlet 3 to suck vapour apart from too little meeting and coagulate water, distance is unfavorable for too greatly the eliminating of the noncondensable gas accumulating in steam drum 15 bottom.
Described noncondensable gas upper inlet 6 is positioned at 5 ~ 10mm place above upper tubesheet 5, and this is conducive to the eliminating of the noncondensable gas accumulating in steam drum 15 top.
Principle of work and process:
(1) in boiling pan, add the crystal seed (magma) boiled needed for sugar;
(2) heating steam is passed into by heating steam inlet pipe 1 toward the steam drum 15 of boiling pan;
(3) open pan feeding valve, in boiling pan, add syrup or molasses by material inlet 12 and material inlet pipe 14 successively;
(4) pan feeding limit in limit passes into heating steam, by regulating the speed of pan feeding and the flow of heating steam, make pan feeding and moisture evaporation balance, thus make the degree of supersaturation of massecuite in boiling pan control in Metastable zone, thus crystal is slowly grown up, obtain the sucrose crystal that particle is neat, size even, conform to quality requirements;
(5) heating steam becomes vapour and coagulates water and coagulate water purger 16 from vapour and discharge after heat being passed to massecuite by heating tube 4;
(6) more when gathering in the steam drum 15 of noncondensable gas at boiling pan, cause vapour coagulate water discharge less time, open the valve 11 on noncondensable gas purger 10, noncondensable gas is directly contacted with the syrup in feed-pipe 14 or molasses with noncondensable gas upper inlet 6, noncondensable gas purger 10, noncondensable gas purger outlet 13 by noncondensable gas lower inlet 3 successively, and heat is passed to syrup or molasses, thus reclaim the heat energy in noncondensable gas;
(7), because noncondensable gas has incoagulable characteristic, after therefore heat is passed to material by it, the secondary steam produced with sugar boiling process, is taken away by be condensed device or vacuum pump of juice catching device 8, juice vapour outlet 9 successively;
(8) when boiling after sugar terminates, open valve 2 with sugar, massecuite is discharged from massecuite outlet 18, can obtain white sugar (or brown sugar (Saccharum Sinensis Roxb.)) through crystallization in motion, purging.
Claims (5)
1. the boiling pan of a recycling residual heat, comprise at the bottom of tank, steam chest and steam drum, feed-pipe and massecuite outlet is provided with at the bottom of tank, steam chest is provided with juice catching device and juice vapour outlet, steam drum is provided with vapour and coagulates water purger, heating steam inlet pipe and noncondensable gas purger, it is characterized in that, the outlet of noncondensable gas purger is connected on feed-pipe.
2. the boiling pan of recycling residual heat as claimed in claim 1, it is characterized in that, described noncondensable gas purger is provided with two noncondensable gas imports, is noncondensable gas lower inlet and noncondensable gas upper inlet respectively.
3. the boiling pan of recycling residual heat as claimed in claim 2, it is characterized in that, described noncondensable gas lower inlet and the distance of lower tubesheet are 100 ~ 200mm.
4. the boiling pan of recycling residual heat as claimed in claim 2, it is characterized in that, described noncondensable gas upper inlet is positioned at 5 ~ 10mm place above upper tubesheet.
5. the boiling pan of recycling residual heat as claimed in claim 1, it is characterized in that, described noncondensable gas purger is provided with valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510165458.7A CN104762418B (en) | 2015-04-09 | 2015-04-09 | A kind of boiling pan of recycling residual heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510165458.7A CN104762418B (en) | 2015-04-09 | 2015-04-09 | A kind of boiling pan of recycling residual heat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104762418A true CN104762418A (en) | 2015-07-08 |
| CN104762418B CN104762418B (en) | 2018-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510165458.7A Active CN104762418B (en) | 2015-04-09 | 2015-04-09 | A kind of boiling pan of recycling residual heat |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521039A (en) * | 2016-12-26 | 2017-03-22 | 广西崇左市湘桂糖业有限公司 | Molasses cooking device for sugar manufacturing |
| CN107013898A (en) * | 2017-04-25 | 2017-08-04 | 荣海生物科技有限公司 | Water circulation system in a kind of Soybean Peptide candy production |
| CN107300165A (en) * | 2017-07-25 | 2017-10-27 | 广西农垦糖业集团红河制糖有限公司 | A kind of vapor condensed water waste-heat recovery device |
| CN109630378A (en) * | 2018-11-26 | 2019-04-16 | 广西大学 | A kind of Zhu Tang workshop section pumped vacuum systems based on thermal transpiration effect |
| CN111733299A (en) * | 2020-07-22 | 2020-10-02 | 广西飞鹏节能环保科技有限公司 | Apparatus and method for accelerated convection of massecuite in crystallization tank |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521039A (en) * | 2016-12-26 | 2017-03-22 | 广西崇左市湘桂糖业有限公司 | Molasses cooking device for sugar manufacturing |
| CN107013898A (en) * | 2017-04-25 | 2017-08-04 | 荣海生物科技有限公司 | Water circulation system in a kind of Soybean Peptide candy production |
| CN107300165A (en) * | 2017-07-25 | 2017-10-27 | 广西农垦糖业集团红河制糖有限公司 | A kind of vapor condensed water waste-heat recovery device |
| CN109630378A (en) * | 2018-11-26 | 2019-04-16 | 广西大学 | A kind of Zhu Tang workshop section pumped vacuum systems based on thermal transpiration effect |
| CN111733299A (en) * | 2020-07-22 | 2020-10-02 | 广西飞鹏节能环保科技有限公司 | Apparatus and method for accelerated convection of massecuite in crystallization tank |
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| Publication number | Publication date |
|---|---|
| CN104762418B (en) | 2018-04-10 |
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Inventor after: Li Wen Inventor after: Li Kai Inventor after: Huang Pin Inventor after: Xiang Junhua Inventor after: Meng Lidan Inventor after: Hang Fangxue Inventor after: Lu Haiqin Inventor before: Li Kai Inventor before: Li Wen Inventor before: Huang Pin Inventor before: Xiang Junhua Inventor before: Meng Lidan Inventor before: Hang Fangxue Inventor before: Lu Haiqin |
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