CN202315356U - Step circulation recovery device of waste heat in xylose production - Google Patents
Step circulation recovery device of waste heat in xylose production Download PDFInfo
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- CN202315356U CN202315356U CN2011204880708U CN201120488070U CN202315356U CN 202315356 U CN202315356 U CN 202315356U CN 2011204880708 U CN2011204880708 U CN 2011204880708U CN 201120488070 U CN201120488070 U CN 201120488070U CN 202315356 U CN202315356 U CN 202315356U
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- flash evaporator
- heating clamber
- heating chamber
- flash vessel
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Abstract
The utility model discloses a step circulation recovery device of waste heat in xylose production, which solves the problems in the existing recovery devices that total heat transfer coefficient of various effects of heating chamber is reduced caused by non-condensable gas existing in third-stage flash gas, investment of devices is increased, and an operation use program is complex. The step circulation recovery device comprises a flash evaporator, a first-effect heating chamber, a first-effect separating chamber, a second-effect heating chamber, a second-effect separating chamber, a third-effect heating chamber and a third-effect separating chamber. The first-effect heating chamber is connected with the first-effect separating chamber, the second-effect heating chamber is connected with the second-effect separating chamber, and the third-effect heating chamber is connected with the third-effect separating chamber. The flash evaporator is a first-stage flash evaporator and comprises a waste water flash evaporator, a hydrolysis liquid flash evaporator and a wash water flash evaporator. Steam outlets of the waste water flash evaporator, the hydrolysis liquid flash evaporator and the wash water flash evaporator are connected with a steam inlet of the first-effect heating chamber, and a third-effect condensate water outlet pipe is connected with a boiler supplement water preheater. The step circulation recovery device of the waste heat in the xylose production is sufficient in waste heat utilization, small in device investment, convenient to produce and operate and free of pollution.
Description
Technical field
The utility model relates to the xylose production technical field, specifically the exhaust heat stepped receiving apparatus that loops back in the xylose production.
Background technology
The xylose production hydrolytic process is discharged waste water, hydrolyzate and wash water respectively in three stages in three phase process, because three kinds of fluid discharge temperature are respectively 115
0C, 125
0C, 120
0C, normal processing is the normal pressure discharging, owing to produce lot of organic acids in the corncob hydrolytic process, three kinds of fluid discharge temperature are again greater than the atmospheric boiling point temperature, a large amount of organic acids get into the atmospheric environment atmospheric flashing, produce stench, pollute; Activated carbon decolorizing must make the hydrolyzate temperature reduce to 80～90 again in the production technology
0C has wasted a large amount of cooling waters; Evaporation condensed water is because vacuum flash, and a large amount of organic acids get in the condensed waters, traditional handicraft be this condensed water as the evaporated liquor recycle, strengthened postorder workshop section like the exchange load, influenced product quality, extremely unreasonable.
Existing retracting device adopts three kinds of liquid of hydrolysis to carry out three grades of flash distillations, and the one-level flash distillation is imitated the heating thermal source as one, and two-stage flash is imitated the heating thermal source as two; Three grades of flash distillations are heated thermal source as triple effect, though feasible technically, according to containing a small amount of on-condensible gas in every grade of gas after three grades of flash distillations of Dalton's law (of partial pressures); Greatly reduce and respectively imitate the heating clamber overall heat-transfer coefficient, increased equipment investment, because the discontinuity of hydrolysis discharge opeing and the fluctuation of lifting rate; Cause three grades of flash distillation seal pipes to gang up easily, make that respectively to imitate temperature and pressure approaching basically, facts have proved not reach theoretical effect; Actual save finite energy, and practical operation when using program complicated.
The utility model content
The utility model purpose provides the exhaust heat stepped receiving apparatus that loops back in a kind of xylose production, has on-condensible gas to reduce in three grades of flash distillation gases that existing retracting device exists respectively to imitate the heating clamber overall heat-transfer coefficient to solve, has increased equipment investment, manipulates the program complicated problems.
The exhaust heat stepped receiving apparatus that loops back in a kind of xylose production; Comprise that flash vessel, is imitated heating clamber, heating clamber, two effect separation chambers, triple effect heating clamber, triple effect separation chamber are imitated in an effect separation chamber, two; One imitates heating clamber links to each other with an effect separation chamber, and two imitate heating clamber links to each other with two effect separation chambers, and the triple effect heating clamber links to each other with the triple effect separation chamber; The bottom that condensed water outlet pipe and two effect heating clambers are imitated in one of one effect separation chamber links to each other; Imitate the condensed water outlet pipe and link to each other with the bottom of triple effect heating clamber two of two effect separation chambers, and said flash vessel is the one-level flash distillation, comprises waste water flash vessel, hydrolyzate flash vessel, wash water flash vessel; The steam inlet that the steam (vapor) outlet of said waste water flash vessel, hydrolyzate flash vessel and wash water flash vessel and is imitated heating clamber is connected, and the triple effect condensed water outlet pipe of said triple effect separation chamber links to each other with feedwater preheater.According to Dalton's law (of partial pressures), the flash steam composition mainly is a low-pressure steam in the flash process, also has a spot of on-condensible gas.
The utility model utilizes the high-temp liquid sensible heat of pretreated waste water that the hydrolysis post discharged, hydrolyzate, wash water to get into the one-level flash distillation and is converted into 86
0C low temperature latent heat steam, low temperature latent heat steam get into and gather pipeline as the evaporimeter thermal source.On-condensible gas is imitated the extraction of heating clamber on-condensible gas pipeline through one in the flash steam; The gas of one effect separation chamber flash distillation is as the thermal source of two effect heating clambers; One imitates the heating clamber condensed water also gets into the further flash distillation utilization of two effect heating clambers; And the like, two effect flash gas and condensed water are as triple effect heating clamber thermal source.Triple effect evaporator can be used as the evaporation equipment of process liquid, fully without primary steam, has reduced steam consumption.60 of evaporimeter generation
0The C condensed water is as boiler feedwater preheating thermal source.
Hydrolyzate temperature after flash distillation is the optimum temperature of activated carbon decolorizing exactly, and the high-temp liquid that hydrolysis is discharged need not be lowered the temperature again, has practiced thrift cooling water amount, and flash distillation has simultaneously also improved hydrolyzate concentration, helps the operation of postorder workshop section; Waste water after the flash distillation helps the sewage plant microbial growth because temperature reduces.
The condensed water that triple effect is discharged can make feed temperature from 15 through the feedwater of heat exchanger preboiler
0C is increased to 55
0C has saved boiler coal consumption.
Exhaust heat stepped recycle in the xylose production process greatly reduces the former consumption of coal of production technology.
The utility model compared with prior art has the following advantages:
1, effectively evades the drawback that contains a small amount of on-condensible gas in three grades of flash-off steams of prior art, increased the overall heat-transfer coefficient of firing equipment, reduced equipment investment, widened and respectively imitated heat transfer temperature difference and total temperature difference; Stopped to cause the defect that does not have the temperature difference between each effect of multi-effect evaporator, increased operating flexibility because the fluctuation of three grades of flash distillations takes place to gang up each other.
2, effectively avoided evaporation condensed water and directly got into production technology, caused the organic acid enrichment, produced vicious circle, increased the postorder post and produce phenomenons such as load.
The utlity model has reasonable in design, UTILIZATION OF VESIDUAL HEAT IN is abundant, equipment investment is little, production operation is convenient,
Pollution-free,The energy-saving and water-saving effect is remarkable, meets national energy-saving and emission-reduction policy, has promotional value widely.
Below in conjunction with accompanying drawing the utility model is further specified.
Description of drawings
Fig. 1 is the exhaust heat stepped structural representation that loops back receiving apparatus in the utility model xylose production.
The specific embodiment
The exhaust heat stepped receiving apparatus that loops back in a kind of xylose production; Comprise that flash vessel, imitates heating clamber 2, an effect separation chamber 3, two and imitate heating clamber 4, two effect separation chambers 5, triple effect heating clamber 6, triple effect separation chamber 7; One imitates heating clamber 2 links to each other with an effect separation chamber 3; Two imitate heating clamber 4 links to each other with two effect separation chambers 5; Triple effect heating clamber 6 links to each other with triple effect separation chamber 7, and the bottom that condensed water outlet pipe 9 and two effect heating clambers 4 are imitated in one of an effect separation chamber 3 links to each other, and imitate condensed water outlet pipes 10 and link to each other with the bottom of triple effect heating clamber 6 two of two effect separation chambers 5; Flash vessel is the one-level flash distillation; Comprise waste water flash vessel 101, hydrolyzate flash vessel 102, wash water flash vessel 103, the steam inlet 21 that the steam (vapor) outlet of waste water flash vessel 101, hydrolyzate flash vessel 102 and wash water flash vessel 103 and is imitated heating clamber 2 is connected, and the triple effect condensed water outlet pipe 11 of triple effect separation chamber 7 links to each other with feedwater preheater 12.
As shown in the figure, during work, hydrolysis pretreated waste water C, hydrolyzate B, wash water A entering get into waste water flash vessel 101, hydrolyzate flash vessel 102 and wash water flash vessel 103 respectively and carry out the one-level flash distillation, and temperature is respectively from 115
0C, 120
0C, 125
0C flash distillation to 86
0C; Low-pressure steam compiles after steam inlet 21 gets into one imitates heating clamber 2, evaporated liquor flash distillation in an effect separation chamber 3, and an effect condensed water gets into two through an effect condensed water outlet pipe 9 and imitates heating clamber 4; One effect separation chamber, 3 low pressure steam also get into two and imitate heating clamber 4 evaporated liquors; Flash distillation in two effect separation chambers 5 then, flash steam get into triple effect heating clamber 6, two effect evaporation condensed waters and also get into triple effect heating clamber 6 evaporated liquors through two effect condensed water outlet pipes 10; Evaporated liquor flash distillation in triple effect separation chamber 7, flash steam get into condenser 15 coolings after vavuum pump 16 vacuumizes; Flash distillation secondary vapour is as the evaporimeter thermal source, and on-condensible gas is imitated on-condensible gas extraction pipeline 8 through one and imitated heating clamber 2 extractions from one in the secondary vapour; The evaporative condenser coolant-temperature gage that triple effect heating clamber 6 is discharged is 60
0C carries out heat exchange as the thermal source of feedwater preheater 12 with 13 water supply of boiler feedwater pipeline, and boiler feedwater drainage pipeline 14 is delivered to the boiler feedwater water tank, and process material liquid D and steam flow are opposite.
Claims (1)
1. the exhaust heat stepped receiving apparatus that loops back in the xylose production; Comprise that flash vessel, is imitated heating clamber, heating clamber, two effect separation chambers, triple effect heating clamber, triple effect separation chamber are imitated in an effect separation chamber, two; One imitates heating clamber links to each other with an effect separation chamber; Two imitate heating clamber links to each other with two effect separation chambers; The triple effect heating clamber links to each other with the triple effect separation chamber, and the bottom that condensed water outlet pipe and two effect heating clambers are imitated in one of an effect separation chamber links to each other, and imitate the condensed water outlet pipes and link to each other with the bottom of triple effect heating clamber two of two effect separation chambers; It is characterized in that: said flash vessel is the one-level flash distillation; Comprise waste water flash vessel (101), hydrolyzate flash vessel (102), wash water flash vessel (103), the steam inlet (21) that the steam (vapor) outlet of said waste water flash vessel (101), hydrolyzate flash vessel (102) and wash water flash vessel (103) and is imitated heating clamber (2) is connected, and the triple effect condensed water outlet pipe (11) of said triple effect separation chamber (7) links to each other with feedwater preheater (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204880708U CN202315356U (en) | 2011-11-30 | 2011-11-30 | Step circulation recovery device of waste heat in xylose production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204880708U CN202315356U (en) | 2011-11-30 | 2011-11-30 | Step circulation recovery device of waste heat in xylose production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202315356U true CN202315356U (en) | 2012-07-11 |
Family
ID=46427359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204880708U Expired - Lifetime CN202315356U (en) | 2011-11-30 | 2011-11-30 | Step circulation recovery device of waste heat in xylose production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202315356U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697458A (en) * | 2013-12-26 | 2014-04-02 | 龙源海洋生物股份有限公司 | Condensate recycling process and equipment |
| CN104645646A (en) * | 2015-02-15 | 2015-05-27 | 重庆奥钝费博医药机械设备有限公司 | Total heat and latent heat recovery type multi-effect vacuum evaporation and concentration device |
| CN106890472A (en) * | 2015-12-21 | 2017-06-27 | 上海沃迪自动化装备股份有限公司 | A kind of multi-effect forced circulation evaporation device condensed water flash heat recovery system |
-
2011
- 2011-11-30 CN CN2011204880708U patent/CN202315356U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697458A (en) * | 2013-12-26 | 2014-04-02 | 龙源海洋生物股份有限公司 | Condensate recycling process and equipment |
| CN103697458B (en) * | 2013-12-26 | 2015-04-15 | 龙源海洋生物股份有限公司 | Condensate recycling process and equipment |
| CN104645646A (en) * | 2015-02-15 | 2015-05-27 | 重庆奥钝费博医药机械设备有限公司 | Total heat and latent heat recovery type multi-effect vacuum evaporation and concentration device |
| CN106890472A (en) * | 2015-12-21 | 2017-06-27 | 上海沃迪自动化装备股份有限公司 | A kind of multi-effect forced circulation evaporation device condensed water flash heat recovery system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |