CN204589694U - A kind of reed starting pulps interval displacement cooking production system - Google Patents
A kind of reed starting pulps interval displacement cooking production system Download PDFInfo
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- CN204589694U CN204589694U CN201520296641.6U CN201520296641U CN204589694U CN 204589694 U CN204589694 U CN 204589694U CN 201520296641 U CN201520296641 U CN 201520296641U CN 204589694 U CN204589694 U CN 204589694U
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 49
- 238000010411 cooking Methods 0.000 title claims abstract description 35
- 235000014676 Phragmites communis Nutrition 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 117
- 239000003814 drug Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 abstract description 14
- 238000011084 recovery Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000009835 boiling Methods 0.000 description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 238000005406 washing Methods 0.000 description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 10
- 239000003513 alkali Substances 0.000 description 6
- 230000029087 digestion Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 229920001131 Pulp (paper) Polymers 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- KSSNXJHPEFVKHY-UHFFFAOYSA-N phenol;hydrate Chemical compound O.OC1=CC=CC=C1 KSSNXJHPEFVKHY-UHFFFAOYSA-N 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 238000000967 suction filtration Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 241000609240 Ambelania acida Species 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model relates to a kind of reed starting pulps interval displacement cooking production system, the liquid outlet of its hot black liquor groove, warm black liquor slot, cold black liquid groove and displacement liquid bath is connected to liquid-inlet bottom digester by respective liquid line and circulating pump, and the liquid outlet on digester top connects the liquid-inlet of hot black liquor groove, warm black liquor slot and displacement liquid bath respectively; Liquid outlet in the middle part of digester is connected to the liquid-inlet of liquid medicine heater by liquid line, and the liquid outlet of liquid medicine heater is connected to the liquid-inlet of digester by liquid line; The steam inlet of liquid medicine heater, hot black liquor groove and warm black liquor slot is all connected with vapour source; The steam inlet of temperature black liquor slot is also connected with the steam (vapor) outlet of digester.Reed starting pulps interval displacement cooking production system of the present utility model, can realize energy recovery and recycle, have process simplification, easy and simple to handle, efficient quick, the outstanding advantages that energy consumption is low.
Description
Technical field
The utility model relates to pulp technology for making paper, particularly a kind of reed starting pulps interval displacement cooking production system.
Background technology
At present, paper technology mainly comprise slurrying, washing and sieving, bleach, the step such as to manufacture paper with pulp.Wherein, slurrying is the first step of paper technology, is also a vital step.In the Conventional batch digestion process of manufacturing chemistry paper pulp, fibrous raw material is added in digester, add the chemicals needed for boiling subsequently, chemicals when straw fiber raw material boilings such as wheat straw, reed, bagasse is a kind of sodium hydroxide solution, and the chemicals when the boiling of wood chip bamboo chip is a kind of sodium hydroxide solution containing vulcanized sodium.Cooking liquor is diluted to certain concentration according to the material quantity added according to certain ratio.Then close digester pot cover valve, pass into steam or digester inner liquid medicine is extracted out pot external application steam and carry out indirect and send back in digester.Digester is warmed up to required temperature and is incubated a period of time.What boiling terminated puts pot is utilize boiling pot inner pressure to be put in spraying pot by pulp spraying.Existing conventional boiling is produced paper pulp method and be there is the deficiencies such as power consumption is high, seriously polluted, pulp strength is low.
Displacement cooking technology is the fruitful chemical pulping technology grown up based on Extended Delignification mechanism, mainly contains tower continuous displacement cooking and the large class of vertical pot interval displacement cooking two.Produce at wood pulp and bamboo pulp at present and obtain large-scale application.Its maximum feature is exactly by the heat energy displacement in digestion process out, reclaims and stores and recycle, reach the object of energy efficiency with this.But because grass as raw material tablet is tiny, soften too early again in digestion process, cause bulk density to change, filtration resistance increases, and not easily accomplishes even displacement, affects cooking quality.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of process simplification, easy and simple to handle, consume energy reed starting pulps interval displacement cooking production system low, energy recovery and recycle can be realized.
The utility model solves its technical problem and is achieved through the following technical solutions:
A kind of reed starting pulps interval displacement cooking production system, it is characterized in that: mainly comprise digester, hot black liquor groove, warm black liquor slot, displacement liquid bath, cold black liquid groove, liquid medicine heater, liquid line, gas piping, circulating pump, control valve, the liquid outlet of described hot black liquor groove, warm black liquor slot, cold black liquid groove and displacement liquid bath is connected to liquid-inlet bottom digester by respective liquid line and circulating pump, and the liquid outlet on digester top connects the liquid-inlet of hot black liquor groove, warm black liquor slot and displacement liquid bath respectively; Liquid outlet in the middle part of digester is connected to the liquid-inlet of liquid medicine heater by liquid line, and the liquid outlet of liquid medicine heater is connected to the liquid-inlet of digester by liquid line; The steam inlet of liquid medicine heater, hot black liquor groove and warm black liquor slot is all connected with vapour source; The steam inlet of temperature black liquor slot is also connected with the steam (vapor) outlet of digester.
The liquid outlet of described warm black liquor slot connects white liquid preheater, black liquor heat exchanger successively, after be connected to cold black liquid groove.
Described hot black liquor groove is communicated with by gas piping and control valve with warm black liquor slot top.
The steam (vapor) outlet at described warm black liquor slot top is connected to gas cooler.
Advantage of the present utility model and beneficial effect are:
1, reed starting pulps interval displacement cooking production system of the present utility model, middle pressure steam is utilized to heat system as heat energy carrier, the consumption of system to heat energy mainly contains two and introduces point, liquid medicine heater and temperature respectively, hot black liquor groove, the effect of liquid medicine heater is mainly heated decoction system, it is main steam consumption point, account for greatly 90% ~ 95% of steam total flow, in order to ensure that the pressure in groove tank maintains stable and supplementary nature dispersed heat, need to supplement part middle pressure steam from groove top in storage process, the pressure of temperature black liquor slot is about 0.35 ~ 0.45MPa, the pressure of hot black liquor groove is about 0.50 ~ 0.60MPa.The steam that temperature, hot black liquor groove are introduced is mainly used in heat-insulation pressure keeping, account for greatly 5% ~ 10% of steam consumption, 1.0MPa saturated vapor is used to carry out boiling as filled when pot amount is 20t air-dry reed sheet, be warmed up to 156 DEG C, the required live steam consumed is 8t, comparatively be warmed up to 160 DEG C and will use live steam 1.1t less, there is steam saving, reduce the advantage of energy consumption.
2, reed starting pulps interval displacement cooking production system of the present utility model, because the warm black liquor amount reclaiming storage exceedes the warm black liquor amount required for boiling, so the warm black liquor of redundance is sent to alkali collection evaporation section, but still carry a large amount of heat energy in warm black liquor, this part heat energy is reclaimed by white liquid preheater (heat exchange of black liquor-Bai liquid) and black liquor heat exchanger (black liquor-clear water heat exchange), enter in digester after the white liquid of preheating and warm black liquor, hot black liquor mixing, effectively can improve kettle temperature, shorten the heating-up time, save the steam consumption, power consumption; Black liquor heat exchanger is positioned at the black liquid outlet of white liquid preheater, it is mainly used in reclaiming heat energy remaining in warm black liquor, when system carries out the filling of warm black liquor and hot black liquor is filled, shell side is passed through with the warm black liquor after cold white liquid heat exchange, clear water carries out heat exchange by tube side, the clear water of heating delivers to washing workshop section for pulp washing, and the black liquor after heat exchange is sent to alkali collection evaporation section and reclaims.
3, reed starting pulps interval displacement cooking production system of the present utility model, in digestion process, enter in digester after middle pressure saturated vapor is mixed with black liquor by liquid medicine heater, condensed water is become due to exchange heat cannot be completed within the extremely short time, some vapor effusion is gathered in the headroom of digester, the pressure in pot is made to increase rapidly, form false pressure, when vacation pressure is enough large time, admission difficulty will be caused, so this part steam must be discharged outside digester, this row pressure operates in whole temperature-rise period all to be needed to carry out, heat in gas is discharged in order to reclaim this part, this part gas is introduced the relatively low warm black liquor slot of pressure by displacement cooking, for giving warm black liquor slot ftercompction insulation.
4, reed starting pulps interval displacement cooking production system of the present utility model, hot black liquor groove is communicated with by gas piping and control valve with warm black liquor slot top, in order to reclaim heat energy, after tablet boiling terminates, need with cold black liquid, the hot black liquor in pot to be cemented out.When hot black liquor flows in hot black liquor groove in a large number time, liquid and steam can cause pressure in hot black liquor groove to rise rapidly, and for keeping pressure stability, be communicated with warm black liquor slot top by hot black liquor groove, centre automatic valve controls.When in hot black liquor groove, pressure exceedes threshold value, valve open, steam enters warm black liquor slot, is incubated for ftercompction.
5, reed starting pulps interval displacement cooking production system of the present utility model, the steam (vapor) outlet at described warm black liquor slot top is connected to gas cooler, when system carries out hot black liquor filling, a large amount of temperature black liquor flows into warm black liquor slot, steam in warm black liquor slot is increased, and pressure increases fast, when pressure exceedes threshold value, the automatic exhaust steam valve at groove top is opened, and excess steam is discharged into gas cooler; Gas cooler is the nucleus equipment reclaiming heat energy in high dense on-condensible gas in displacement cooking system.It is made up of tube side and shell side, and on-condensible gas walks tube side, and clear water walks shell side, and the thermal energy exchange that gas carries is to clear water and deliver to washing workshop section for pulp washing.On-condensible gas after heat exchange becomes condensed water, is stored to condensate water pot, when liquid level reaches threshold value, is pumped to washing workshop section for pulp washing.This completes the recovery of high dense on-condensible gas heat energy in whole displacement cooking system.
6, reed starting pulps interval displacement cooking production system of the present utility model, can realize energy recovery and recycle, have process simplification, easy and simple to handle, efficient quick, the outstanding advantages that energy consumption is low is a kind of pulp producing systems and method with higher innovation.
Accompanying drawing explanation
Fig. 1 is schematic flow sheet of the present utility model;
Fig. 2 is that steam of the present utility model introduces some schematic diagram;
Fig. 3 is cold displacement of the present utility model and heat exchange process figure.
Description of reference numerals:
1-replaces liquid bath, 2-temperature black liquor slot, 3-hot black liquor groove, 4-digester, 5-cold black liquid groove, 6-liquid medicine heater, 7-black liquor heat exchanger, the white liquid preheater of 8-, 9-gas cooler.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail, and following examples are descriptive, is not determinate, can not limit protection domain of the present utility model with this.
A kind of reed starting pulps interval displacement cooking production system, it mainly comprises digester 4, hot black liquor groove 3, warm black liquor slot 2, displacement liquid bath 1, cold black liquid groove 5, liquid medicine heater 6, liquid line, gas piping, circulating pump, control valve, the liquid outlet of described hot black liquor groove, warm black liquor slot, cold black liquid groove and displacement liquid bath is connected to liquid-inlet bottom digester by respective liquid line and circulating pump, and the liquid outlet on digester top connects the liquid-inlet of hot black liquor groove, warm black liquor slot and displacement liquid bath respectively; Liquid outlet in the middle part of digester is connected to the liquid-inlet of liquid medicine heater by liquid line, and the liquid outlet of liquid medicine heater is connected to the liquid-inlet of digester by liquid line; The steam inlet of liquid medicine heater, hot black liquor groove and warm black liquor slot is all connected with vapour source; The steam inlet of temperature black liquor slot is also connected with the steam (vapor) outlet of digester.
Hot black liquor groove is communicated with by gas piping and control valve with warm black liquor slot top.The steam (vapor) outlet at temperature black liquor slot top is connected to gas cooler 9.
Middle pressure steam is utilized to heat system as heat energy carrier, the consumption of system to heat energy mainly contains two and introduces point, liquid medicine heater and temperature respectively, hot black liquor groove, the effect of liquid medicine heater is mainly heated decoction system, it is main steam consumption point, account for greatly 90% ~ 95% of steam total flow, in order to ensure that the pressure in groove tank maintains stable and supplementary nature dispersed heat, need to supplement part middle pressure steam from groove top in storage process, the pressure of temperature black liquor slot is about 0.35 ~ 0.45MPa, the pressure of hot black liquor groove is about 0.50 ~ 0.60MPa.The steam that temperature, hot black liquor groove are introduced is mainly used in heat-insulation pressure keeping, account for greatly 5% ~ 10% of steam consumption, 1.0MPa saturated vapor is used to carry out boiling as filled when pot amount is 20t air-dry reed sheet, be warmed up to 156 DEG C, the required live steam consumed is 8t, comparatively be warmed up to 160 DEG C and will use live steam 1.1t less, there is steam saving, reduce the advantage of energy consumption.
Temperature black liquor slot liquid outlet connect white liquid preheater 8, black liquor heat exchanger 7 successively, after be connected to cold black liquid groove.Because the warm black liquor amount reclaiming storage exceedes the warm black liquor amount required for boiling, so the warm black liquor of redundance is sent to alkali collection evaporation section, but still carry a large amount of heat energy in warm black liquor, this part heat energy is reclaimed by white liquid preheater (heat exchange of black liquor-Bai liquid) and black liquor heat exchanger (black liquor-clear water heat exchange), enter in digester after the white liquid of preheating and warm black liquor, hot black liquor mixing, effectively can improve kettle temperature, shorten the heating-up time, save the steam consumption, power consumption; Black liquor heat exchanger is positioned at the black liquid outlet of white liquid preheater, it is mainly used in reclaiming heat energy remaining in warm black liquor, when system carries out the filling of warm black liquor and hot black liquor is filled, shell side is passed through with the warm black liquor after cold white liquid heat exchange, clear water carries out heat exchange by tube side, the clear water of heating delivers to washing workshop section for pulp washing, and the black liquor after heat exchange is sent to alkali collection evaporation section and reclaims.
In digestion process, enter in digester after middle pressure saturated vapor is mixed with black liquor by liquid medicine heater, condensed water is become due to exchange heat cannot be completed within the extremely short time, some vapor effusion is gathered in the headroom of digester, the pressure in pot is made to increase rapidly, form false pressure, when vacation pressure is enough large time, admission difficulty will be caused, so this part steam must be discharged outside digester, this row pressure operates in whole temperature-rise period all to be needed to carry out, heat in gas is discharged in order to reclaim this part, this part gas is introduced the relatively low warm black liquor slot of pressure by displacement cooking, for giving warm black liquor slot ftercompction insulation.
Hot black liquor groove is communicated with by gas piping and control valve with warm black liquor slot top, in order to reclaim heat energy, after tablet boiling terminates, needs to be cemented out by the hot black liquor in pot with cold black liquid.When hot black liquor flows in hot black liquor groove in a large number time, liquid and steam can cause pressure in hot black liquor groove to rise rapidly, and for keeping pressure stability, be communicated with warm black liquor slot top by hot black liquor groove, centre automatic valve controls.When in hot black liquor groove, pressure exceedes threshold value, valve open, steam enters warm black liquor slot, is incubated for ftercompction.
Hot black liquor groove is communicated with by gas piping and control valve with warm black liquor slot top, in order to reclaim heat energy, after tablet boiling terminates, needs to be cemented out by the hot black liquor in pot with cold black liquid.When hot black liquor flows in hot black liquor groove in a large number time, liquid and steam can cause pressure in hot black liquor groove to rise rapidly, and for keeping pressure stability, be communicated with warm black liquor slot top by hot black liquor groove, centre automatic valve controls.When in hot black liquor groove, pressure exceedes threshold value, valve open, steam enters warm black liquor slot, is incubated for ftercompction.
The steam (vapor) outlet at temperature black liquor slot top is connected to gas cooler, when system carries out hot black liquor filling, a large amount of temperature black liquor flows into warm black liquor slot, steam in warm black liquor slot is increased, pressure increases fast, when pressure exceedes threshold value, the automatic exhaust steam valve at groove top is opened, and excess steam is discharged into gas cooler; Gas cooler is the nucleus equipment reclaiming heat energy in high dense on-condensible gas in displacement cooking system.It is made up of tube side and shell side, and on-condensible gas walks tube side, and clear water walks shell side, and the thermal energy exchange that gas carries is to clear water and deliver to washing workshop section for pulp washing.On-condensible gas after heat exchange becomes condensed water, is stored to condensate water pot, when liquid level reaches threshold value, is pumped to washing workshop section for pulp washing.This completes the recovery of high dense on-condensible gas heat energy in whole displacement cooking system.
The operation principle of above-mentioned reed starting pulps interval displacement cooking production system is:
(1) tablet dress pot: the qualified reed sheet sent here by material papering section loads in digester by conveyer belt, adds a part of thin phenol water from washing workshop section simultaneously and carries out preimpregnation to improve dress pot quality;
(2) cold black liquid is filled: seal pot cover after dress pot terminates, in thin phenol water pumping people digester washing workshop section sent here, utilize its amount of residual heat will that kettle temperature is risen to 65 ~ 75 °, can get rid of residual air in pot simultaneously, guarantee that digestion process is in liquid phase;
(3) warm black liquor displacement: cold black liquid is displaced digester with the warm black liquor of about 130 DEG C that store in warm black liquor slot, cold black liquid is back to displacement liquid bath, kettle temperature is promoted to about 110 DEG C, simultaneously adding portion alkali lye with in and the organic acid of web surface, and permeate tablet in advance;
(4) the first stage boiling stage: utilize circulating pump that the cooking liquor in pot is out sent into liquid medicine heater through the filtration sieve plate suction filtration in the middle part of digester and mix with middle pressure steam, and then send back in pot, constantly circulation is warming up to when kettle temperature reaches 130 DEG C is the terminal of first stage boiling;
(5) hot black liquor displacement: with the hot black liquor of about 150 DEG C that store in hot black liquor groove, warm black liquor is displaced digester, warm black liquor is back to warm black liquor slot, by more than temperature increase to 140 in digester DEG C, supplementary part alkali lye supplements delignification simultaneously;
(6) the secondary boiling stage: utilize circulating pump that the cooking liquor in digester is out sent into liquid medicine heater through the filtration sieve plate suction filtration in the middle part of digester and mix with middle pressure steam, and then send in digester, be circulated to boiling kettle temperature and reach 155 ~ 158 DEG C, stop heating, enter holding stage, insulation 0.5 ~ 1h, secondary boiling terminates;
(7) cold black liquid displacement: hot black liquor is displaced digester with cold black liquid in cold black liquid groove, the high-temperature hot black liquor cemented out enters hot black liquor groove, temperature black liquor enters warm black liquor slot, and cold black liquid enters displacement liquid bath, until cold black liquid replacement completion when kettle temperature is down to below 100 DEG C;
(8) pot is put in discharging: utilize and put pot pump and pump to spraying pot by the thick slurry in pot, adds cold black liquid dilution bottom digester simultaneously.
Table 1 the utility model displacement cooking and transverse tube even steam Data Comparison
From table 1 data, adopt the energy resource consumption of displacement cooking unit product of the present utility model and raw material consumption all lower than continuously cooking, and stock quality is better.This is consistent with the DDS boiling that bamboo and wood is starched, but because reed is as non-wood-fiber, just start to remove lignin in a large number 110 DEG C time, therefore, the maximum temperature needed for boiling is lower, and steam consumption is also lower.Use 1.0MPa saturated vapor to carry out boiling as filled when pot amount is 20t air-dry reed sheet, be warmed up to 156 DEG C, the live steam of required consumption is 8t, is comparatively warmed up to 160 DEG C and will uses live steam 1.1t less.But, because reed sheet has lower softening point, less bulk density, so lower than the DDS boiling of bamboo wood pulp in the unit production capacity of equipment.
Although disclosed embodiment of the present utility model and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that, in the spirit and scope not departing from the utility model and claims, various replacement, change and amendment are all possible, and therefore scope of the present utility model is not limited to the content disclosed in embodiment and accompanying drawing.
Claims (4)
1. a reed starting pulps interval displacement cooking production system, it is characterized in that: mainly comprise digester, hot black liquor groove, warm black liquor slot, displacement liquid bath, cold black liquid groove, liquid medicine heater, liquid line, gas piping, circulating pump, control valve, the liquid outlet of described hot black liquor groove, warm black liquor slot, cold black liquid groove and displacement liquid bath is connected to liquid-inlet bottom digester by respective liquid line and circulating pump, and the liquid outlet on digester top connects the liquid-inlet of hot black liquor groove, warm black liquor slot and displacement liquid bath respectively; Liquid outlet in the middle part of digester is connected to the liquid-inlet of liquid medicine heater by liquid line, and the liquid outlet of liquid medicine heater is connected to the liquid-inlet of digester by liquid line; The steam inlet of liquid medicine heater, hot black liquor groove and warm black liquor slot is all connected with vapour source; The steam inlet of temperature black liquor slot is also connected with the steam (vapor) outlet of digester.
2. reed starting pulps according to claim 1 interval displacement cooking production system, is characterized in that: the liquid outlet of described warm black liquor slot connects white liquid preheater, black liquor heat exchanger successively, after be connected to cold black liquid groove.
3. reed starting pulps interval displacement cooking production system according to claim 1, is characterized in that: described hot black liquor groove is communicated with by gas piping and control valve with warm black liquor slot top.
4. reed starting pulps interval displacement cooking production system according to claim 1, is characterized in that: the steam (vapor) outlet at described warm black liquor slot top is connected to gas cooler.
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| CN201520296641.6U CN204589694U (en) | 2015-05-08 | 2015-05-08 | A kind of reed starting pulps interval displacement cooking production system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109487610A (en) * | 2018-12-26 | 2019-03-19 | 广西粤桂广业控股股份有限公司 | A kind of method of the direct pulping by cooking of fresh bagasse |
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2015
- 2015-05-08 CN CN201520296641.6U patent/CN204589694U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109487610A (en) * | 2018-12-26 | 2019-03-19 | 广西粤桂广业控股股份有限公司 | A kind of method of the direct pulping by cooking of fresh bagasse |
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