CN108252150A - A kind of energy-saving system of paper-making drying cylinder - Google Patents
A kind of energy-saving system of paper-making drying cylinder Download PDFInfo
- Publication number
- CN108252150A CN108252150A CN201611249564.4A CN201611249564A CN108252150A CN 108252150 A CN108252150 A CN 108252150A CN 201611249564 A CN201611249564 A CN 201611249564A CN 108252150 A CN108252150 A CN 108252150A
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- Prior art keywords
- water
- condensation
- flash tank
- drying cylinder
- energy
- 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.)
- Granted
Links
- 238000001035 drying Methods 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 151
- 238000001816 cooling Methods 0.000 claims abstract description 37
- 238000009833 condensation Methods 0.000 claims abstract description 29
- 230000005494 condensation Effects 0.000 claims abstract description 29
- 238000007701 flash-distillation Methods 0.000 claims abstract description 19
- 238000004140 cleaning Methods 0.000 claims abstract description 13
- 230000008676 import Effects 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 8
- 238000007667 floating Methods 0.000 claims description 7
- 239000013505 freshwater Substances 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000018984 mastication Effects 0.000 description 1
- 238000010077 mastication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/20—Waste heat recovery
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/10—Removing condensate from the interior of the cylinders
Landscapes
- Paper (AREA)
Abstract
The present invention relates to a kind of energy-saving systems of paper-making drying cylinder, including regulating and controlling unit by the sequentially connected drying cylinder of condensing water conduit (1), multistage flash distillation unit and water temperature, water temperature regulation and control unit includes cooling tower (3), cooling tower (3) is equipped with condensation water inlet, clear water import and warm water outlet, the condensation water inlet of multistage flash distillation unit and cooling tower connects, and warm water outlet is connected with the cleaning unit (4) for rinsing papermaking cylinder mould and felt.Compared with prior art, the present invention has many advantages, such as that energy and water resource utilization efficiency are high, environmentally friendly.
Description
Technical field
The present invention relates to cleaning pulp technology for making paper, more particularly, to a kind of energy-saving system of paper-making drying cylinder.
Background technology
53 tons of BF12 paper machine day production capacities in paper mill, the ton paper steam consumption are 2.5 tons of vapour/ton paper, and daily drying cylinder is used for paper web
About 92 tons of condensed water caused by drying, about 95 DEG C of these condensed water water temperatures, condensed water are the hot mastication water of saturation, and
It is clean distilled water, is suitble to be re-used as boiler feedwater.But our company stops using boiler at present to concentrate steam supply.Originally
It is to send condensed water concentration to sink, natural cooling is discharged again.Electric power, but also the waste good condensed water of quality are not only consumed in this way.
Therefore, for using concentrate steam supply paper mill for, take effective recovery system, utmostly the thermal energy of recovery system and
Softened water is very important.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of energy and water resources
Utilization ratio is high, the energy-saving system of paper-making drying cylinder of environmental protection.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of energy-saving system of paper-making drying cylinder, including passing through the sequentially connected drying cylinder of condensing water conduit, multistage flash distillation list
Member and water temperature regulate and control unit, the water temperature regulation and control unit include cooling tower, the cooling tower be equipped with condensation water inlet,
The condensation water inlet of clear water import and warm water outlet, the multistage flash distillation unit and cooling tower connects, and the warm water goes out
Mouth is connected with the cleaning unit for rinsing papermaking cylinder mould and felt.
As preferred technical solution, water temperature regulation and control unit further includes Liquid level component, the liquid level control
Component processed is included by communicating the liquid level sensor connected and control valve and the downflow weir for being arranged on cooling tower top, overflow
Weir is connected with overflow pipe.
As preferred technical solution, the liquid level sensor and control valve of the communication connection use floating ball type liquid level control
Valve processed, the float ball type water level control valve are arranged on clear water import, the height of the floating ball of float ball type water level control valve and downflow weir
Highly match.
As preferred technical solution, water temperature regulation and control unit further includes temperature-controlling module, the temperature control
Component processed includes a temperature sensor with control valve communication connection.
As preferred technical solution, the multistage flash distillation unit includes the first flash tank, the second flash tank, third and dodges
Steaming pot, heat pump and heat exchanger, each flash tank are equipped with condensation water inlet, condensation-water drain and steam (vapor) outlet, the first flash tank
Condensation water inlet and the condensation-water drain of drying cylinder connect, the steam (vapor) outlet of the first flash tank leads to heat pump, the first flash tank
Condensation-water drain is connect with the condensation water inlet of the second flash tank, and the steam (vapor) outlet of the second flash tank leads to heat exchanger, and second
The condensation-water drain of flash tank is connect with the condensation water inlet of third flash tank, the condensation-water drain and cooling water of third flash tank
The condensation water inlet connection of tower.
As preferred technical solution, the steam (vapor) outlet of the third flash tank leads to air.
As preferred technical solution, the clear water import is connected with fresh water pipeline, the steam (vapor) outlet of third flash tank
It is connect with fresh water pipeline by dividing wall type heat exchanger.
As preferred technical solution, the bottom of the dividing wall type heat exchanger is equipped with condensation-water drain, and the condensation
Water out and the condensing water conduit being arranged between multistage flash distillation unit and cooling tower connect, the dividing wall type heat exchanger
Top is equipped with steam (vapor) outlet.
As preferred technical solution, the cleaning unit includes high-pressure hydraulic pump and is respectively connect with high-pressure hydraulic pump
Papermaking cylinder mould rinses tap and felt rinses tap, and the water inlet of the high-pressure hydraulic pump and the warm water of cooling tower export
Connection, the water outlet of high-pressure hydraulic pump are equipped with switch valve with each junction for rinsing tap.
Compared with prior art, the invention has the advantages that：
(1) thermal energy of the condensed water of drying cylinder is recycled step by step using multistage flash distillation unit, step by step in removal process, is obtained
The energy grade obtained reduces successively, by using heat pump, heat exchanger, discharge air (or dividing wall type heat exchanger) successively to difference
The energy of grade is utilized, and improves energy utilization efficiency, and is reduced and generated the condensed water direct emission in drying cylinder
Indirect steam polluted caused by plant environment.
(2) the condensed water energy grade that multistage flash distillation unit generates is not high, but is clean distilled water, pass through by
It is passed through together with clear water in cooling tower, and the warm water of about 30~40 DEG C of manufacture supplies the flushing of papermaking cylinder mould and felt
Unit avoids the waste of condensed water, and the warm water generated is used for cleaning papermaking cylinder mould and the direct use of felt effect ratio
Clear water, which rinses, well much to improve cleaning efficiency.And avoid the energy dissipation individually heated to clear water.
(3) cooling tower avoids excessive waste clear water by liquid level sensor (floating ball), once in cooling tower
Water storage is excessive, is sensed by liquid level sensor, is shut off clear water, avoids the waste of clear water.
(4) temperature sensor and the control valve communication of clear water entrance connect, can be real-time by the temperature in cooling tower
Feedback adjusts clear water flow, avoids waste clear water, by being used cooperatively for liquid level sensor and temperature sensor, avoids clear
The waste of water, and but also the water temperature control in cooling tower is more stablized.
(5) heat exchange is carried out to the steam of third flash tank by dividing wall type heat exchanger, heating is clear into cooling tower
Water, further improves energy utilization efficiency, and the condensed water of generation also improves the utilization rate of condensed water.Pass through the technical program
Measure, produce water-saving 2 tons of paper per ton, water-saving result is apparent.
Description of the drawings
Fig. 1 is the connection diagram of the present invention.
In figure, 1 is drying cylinder, and 21 be the first flash tank, and 22 be the second flash tank, and 23 be third flash tank, and 24 be heat pump, 25
For heat exchanger, 3 be cooling tower, and 31 valves in order to control, 32 be floating ball, and 33 be temperature sensor, and 34 be fresh water pipeline, and 35 be excessive
Weir is flowed, 36 be overflow pipe, and 4 be cleaning unit, and 41 be high-pressure hydraulic pump, and 42 rinse tap for papermaking cylinder mould, and 43 rush for felt
Tap is washed, 44 be switch valve, and 5 be dividing wall type heat exchanger.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of energy-saving system of paper-making drying cylinder, as shown in Figure 1, including by the sequentially connected drying cylinder 1 of condensing water conduit,
Multistage flash distillation unit and water temperature regulation and control unit, water temperature regulation and control unit include cooling tower 3, cooling tower 3 be equipped with condensation water inlet,
The condensation water inlet of clear water import and warm water outlet, multistage flash distillation unit and cooling tower connects, and warm water outlet, which is connected with, to be used for
Rinse the cleaning unit 4 of papermaking cylinder mould and felt.
Wherein, multistage flash distillation unit includes the first flash tank 21, the second flash tank 22, third flash tank 23,24 and of heat pump
Heat exchanger 25, each flash tank are equipped with condensation water inlet, condensation-water drain and steam (vapor) outlet, the condensed water of the first flash tank 21
Import is connect with the condensation-water drain of drying cylinder 1, and the steam (vapor) outlet of the first flash tank 21 leads to heat pump 24, the first flash tank 21 it is cold
Condensate outlet is connect with the condensation water inlet of the second flash tank 22, and the steam (vapor) outlet of the second flash tank 22 leads to heat exchanger 25,
The condensation-water drain of second flash tank 22 is connect with the condensation water inlet of third flash tank 23, and the condensed water of third flash tank 23 goes out
Mouth is connect with the condensation water inlet of cooling tower 3.Clear water import is connected with fresh water pipeline 34, the steam (vapor) outlet of third flash tank 23
It is connect with fresh water pipeline 34 by dividing wall type heat exchanger 5.The bottom of dividing wall type heat exchanger 5 is equipped with condensation-water drain, and this is cold
The condensing water conduit that condensate is exported and is arranged between multistage flash distillation unit and cooling tower 3 connects, dividing wall type heat exchanger 5
Top is equipped with steam (vapor) outlet.
The cooling tower diameter 2m of the present embodiment, high 5.5m, water temperature regulation and control unit further include Liquid level component and temperature
Control assembly, Liquid level component are included by communicating the liquid level sensor 32 connected and control valve 31 and being arranged on cooling water
The downflow weir 35 on 3 top of tower, downflow weir 35 are connected with overflow pipe 36.The liquid level sensor 32 and control valve 31 of communication connection are adopted
With float ball type water level control valve, which is arranged on clear water import, the floating ball 32 of float ball type water level control valve
Height and the height of downflow weir 35 match, temperature-controlling module include one with control valve 31 communication connection temperature sensor
33, the water in cooling tower is become to 35 DEG C of warm water by Liquid level component and temperature-controlling module.
Cleaning unit 4 includes high-pressure hydraulic pump 41 and the papermaking cylinder mould that connect respectively with high-pressure hydraulic pump 41 rinse leading 42 and
Felt rinses tap 43, and the water inlet of high-pressure hydraulic pump 41 is connected with the warm water outlet of cooling tower 3, and high-pressure hydraulic pump 41 goes out
The mouth of a river is equipped with switch valve 44 with each junction for rinsing tap.
Embodiment 2
A kind of energy-saving system of paper-making drying cylinder, including passing through the sequentially connected drying cylinder 1 of condensing water conduit, multistage flash distillation list
Member and water temperature regulate and control unit, water temperature regulation and control unit include cooling tower 3, cooling tower 3 be equipped with condensation water inlet, clear water import and
Warm water exports, and the condensation water inlet of multistage flash distillation unit and cooling tower connects, and warm water outlet is connected with to rinse wire-cloth
The cleaning unit 4 of cage and felt.
Wherein, multistage flash distillation unit includes the first flash tank 21, the second flash tank 22, third flash tank 23,24 and of heat pump
Heat exchanger 25, each flash tank are equipped with condensation water inlet, condensation-water drain and steam (vapor) outlet, the condensed water of the first flash tank 21
Import is connect with the condensation-water drain of drying cylinder 1, and the steam (vapor) outlet of the first flash tank 21 leads to heat pump 24, the first flash tank 21 it is cold
Condensate outlet is connect with the condensation water inlet of the second flash tank 22, and the steam (vapor) outlet of the second flash tank 22 leads to heat exchanger 25,
The condensation-water drain of second flash tank 22 is connect with the condensation water inlet of third flash tank 23, and the condensed water of third flash tank 23 goes out
Mouth is connect with the condensation water inlet of cooling tower 3.The steam (vapor) outlet of third flash tank 23 leads to air.
Water temperature regulation and control unit further includes Liquid level component, and Liquid level component includes the level sensing by communicating connection
Device 32 and control valve 31 and the downflow weir 35 for being arranged on 3 top of cooling tower, downflow weir 35 are connected with overflow pipe 36.The communication
The liquid level sensor 32 and control valve 31 of connection use float ball type water level control valve, which is arranged on clear water
Import, the height and the height of downflow weir 35 of the floating ball 32 of float ball type water level control valve match.
Cleaning unit 4 includes high-pressure hydraulic pump 41 and the papermaking cylinder mould that connect respectively with high-pressure hydraulic pump 41 rinse leading 42 and
Felt rinses tap 43, and the water inlet of high-pressure hydraulic pump 41 is connected with the warm water outlet of cooling tower 3, and high-pressure hydraulic pump 41 goes out
The mouth of a river is equipped with switch valve 44 with each junction for rinsing tap.
Claims (9)
1. a kind of energy-saving system of paper-making drying cylinder, which is characterized in that including passing through the sequentially connected drying cylinder of condensing water conduit
(1), multistage flash distillation unit and water temperature regulation and control unit, water temperature regulation and control unit include cooling tower (3), the cooling water
Tower (3) equipped with condensation water inlet, clear water import and warm water outlet, the condensed water of the multistage flash distillation unit and cooling tower into
Mouth connection, warm water outlet are connected with the cleaning unit (4) for rinsing papermaking cylinder mould and felt.
2. the energy-saving system of a kind of paper-making drying cylinder according to claim 1, which is characterized in that the water temperature regulation and control are single
Member further includes Liquid level component, and the Liquid level component includes the liquid level sensor (32) and control by communicating connection
Valve (31) and the downflow weir (35) for being arranged on cooling tower (3) top, downflow weir (35) are connected with overflow pipe (36).
3. the energy-saving system of a kind of paper-making drying cylinder according to claim 2, which is characterized in that the communication connection
Liquid level sensor (32) and control valve (31) using float ball type water level control valve, the float ball type water level control valve be arranged on clear water into
Mouthful, the height and the height of downflow weir (35) of the floating ball (32) of float ball type water level control valve match.
4. the energy-saving system of a kind of paper-making drying cylinder according to claim 2, which is characterized in that the water temperature regulation and control are single
Member further includes temperature-controlling module, and the temperature-controlling module includes a temperature sensor with control valve (31) communication connection
(33)。
A kind of 5. energy-saving system of paper-making drying cylinder according to claim 1, which is characterized in that the multistage flash distillation list
Member includes the first flash tank (21), the second flash tank (22), third flash tank (23), heat pump (24) and heat exchanger (25), respectively
Flash tank is equipped with condensation water inlet, condensation-water drain and steam (vapor) outlet, the condensation water inlet and drying cylinder of the first flash tank (21)
(1) condensation-water drain connection, the steam (vapor) outlet of the first flash tank (21) lead to heat pump (24), the condensation of the first flash tank (21)
Water out is connect with the condensation water inlet of the second flash tank (22), and the steam (vapor) outlet of the second flash tank (22) leads to heat exchanger
(25), the condensation-water drain of the second flash tank (22) is connect with the condensation water inlet of third flash tank (23), third flash tank
(23) condensation-water drain is connect with the condensation water inlet of cooling tower (3).
A kind of 6. energy-saving system of paper-making drying cylinder according to claim 5, which is characterized in that the third flash tank
(23) steam (vapor) outlet leads to air.
7. the energy-saving system of a kind of paper-making drying cylinder according to claim 5, which is characterized in that the clear water import connects
Fresh water pipeline (34) is connected to, the steam (vapor) outlet of third flash tank (23) is connected with fresh water pipeline (34) by dividing wall type heat exchanger (5)
It connects.
A kind of 8. energy-saving system of paper-making drying cylinder according to claim 7, which is characterized in that the wall-type heat exchange
The bottom of device (5) is equipped with condensation-water drain, and the condensation-water drain and be arranged on multistage flash distillation unit and cooling tower (3) it
Between condensing water conduit connection, the top of the dividing wall type heat exchanger (5) is equipped with steam (vapor) outlet.
A kind of 9. energy-saving system of paper-making drying cylinder according to claim 1, which is characterized in that the cleaning unit
(4) the papermaking cylinder mould being connect including high-pressure hydraulic pump (41) and respectively with high-pressure hydraulic pump (41) rinses leading (42) and felt
It rinses leading (43), the water inlet of the high-pressure hydraulic pump (41) is connected with the warm water outlet of cooling tower (3), high-pressure hydraulic pump
(41) water outlet is equipped with switch valve (44) with each junction for rinsing tap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611249564.4A CN108252150B (en) | 2016-12-29 | 2016-12-29 | Energy-saving and consumption-reducing system of papermaking drying cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611249564.4A CN108252150B (en) | 2016-12-29 | 2016-12-29 | Energy-saving and consumption-reducing system of papermaking drying cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108252150A true CN108252150A (en) | 2018-07-06 |
| CN108252150B CN108252150B (en) | 2024-01-23 |
Family
ID=62721436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611249564.4A Active CN108252150B (en) | 2016-12-29 | 2016-12-29 | Energy-saving and consumption-reducing system of papermaking drying cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108252150B (en) |
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| CN205603962U (en) * | 2016-04-27 | 2016-09-28 | 陕西科技大学 | Toilet paper machine dryer part waste heat complementary energy recovery unit |
| CN205741757U (en) * | 2016-05-12 | 2016-11-30 | 湖北宜昌翔陵纸制品有限公司 | A kind of papermaking drying machine condensate drain |
| CN206873199U (en) * | 2016-12-29 | 2018-01-12 | 上海东冠纸业有限公司 | A kind of energy-saving system of paper-making drying cylinder |
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| JPH08247406A (en) * | 1995-02-17 | 1996-09-27 | Spirax Sarco Ltd | Drain recovering system of steam plant circuit |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108252150B (en) | 2024-01-23 |
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