CN1986571A - Technological process of controlling yellowing of short viscose fiber by means of recipe program - Google Patents
Technological process of controlling yellowing of short viscose fiber by means of recipe program Download PDFInfo
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- CN1986571A CN1986571A CN 200610102080 CN200610102080A CN1986571A CN 1986571 A CN1986571 A CN 1986571A CN 200610102080 CN200610102080 CN 200610102080 CN 200610102080 A CN200610102080 A CN 200610102080A CN 1986571 A CN1986571 A CN 1986571A
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Abstract
The technological process of controlling yellow of short viscose fiber by means of recipe program includes a yellowing step and a dissolving step under the control of DCS control system and recipe software. The yellowing control equipment includes motor functional module, motor and valve functional module. The yellowing step includes setting alkaline fiber into yellowing machine, vacuumizing, and introducing CS2 gas to react with alkaline fiber for yellowing. The dissolving step includes adding low temperature alkali into the yellowing machine to obtain short viscose fiber glue. The present invention has high automation level, concentrated control, high production efficiency, high product quality and other advantages.
Description
Technical field:
The present invention relates to a kind of technology of viscose staple fibre yellow, particularly relate to a kind of technology with the yellow of prescription time variable control viscose staple fibre.
Background technology
Yellow technology is that viscose glue prepares most important operation in the process of viscose staple fiber production, mainly is the process that soda cellulose and CS2 react the production of cellulose xanthate acid.
Production line of present domestic viscose staple fibre manufacturer adopts two xanthating machines to carry out the viscose glue preparation, and every corresponding separately dissolving bucket of ecliptic longitude machine dissolves.Two xanthating machines shared add the carbon pipeline, add the alkali jar, vacuum pump, equipment such as thick homogenizer.To the control of yellow technology be generally xanthating machine one a batch of material reaction produce finish after, enter waiting status, manually intervene by the operative employee and transfer another xanthating machine reaction beginning to.Control device falls behind, and production efficiency is low, the labour intensity height.
Summary of the invention:
Defectives such as the technical problem to be solved in the present invention is to fall behind at control device in the prior art, and production efficiency is low provide a kind of production efficiency height, control the technology of the control viscose staple fibre yellow of production with DCS Controlling System and Batch formula software thereof automatically.
Solve the problems of the technologies described above by the following technical solutions: a kind of technology with the yellow of prescription time variable control viscose staple fibre, the I/A series DCS Controlling System and the Batch formula software thereof that comprise American I NVENSYS company, described processing unit comprises vacuum pump, add the carbon pipeline, scale hooper and xanthating machine, thick homogenizer, the alkali jar, exhaust blower, motor, valve, this technology is divided into yellow and dissolution process, it is characterized in that, the equipment that needs in the yellow operation is used the software control of DCS Control Configuration respectively, wherein control the input of yellow operation electric motors function piece, output terminal is connected with motor, the input of valve function piece, output terminal is connected with valve, motor, the valve function piece is write with the DCS control software; Described processing step is dry xanthation: with putting into xanthating machine after the fine weighing of alkali, after with vacuum pump xanthating machine being evacuated, toward xanthating machine in, add CS2 by adding the carbon pipeline, CS2 with gas form in xanthating machine with the fine reaction of alkali after, yellow reaction end; Dissolving: after yellow reaction finishes, add low-temperature alkaline again in the xanthating machine and dissolve, added low-temperature alkaline accounts for 1/2 of total alkali content, and dissolution time is 1 hour, promptly makes the viscose staple fibre finished product.
Owing to adopted technique scheme, compared with prior art, the present invention has the following advantages:
1. use two xanthating machines, when wherein an equipment broke down, miscellaneous equipment can not influenced by it, normally produces.Malfunction equipment when needing certain step of execution, can be realized it by the manual steering routine of prescription program, and not influence program implementation when its recovery is normal to be used when maintenance.Strengthen equipment capacity,, promote and be 35000 tons of annual capacities, production efficiency height by 20000 tons of original annual capacities.
2. automatic control level height is realized centralized Control, has not only improved labour productivity, has also improved the stability and the accuracy of operation greatly, has guaranteed the quality of product, has reduced labour intensity.
Description of drawings
Accompanying drawing 1 is yellow of the present invention, dissolving step schema.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
The present invention adopts two cover xanthating machine, dissolving machine and relevant devices.Adopt the I/A series DCS Controlling System and the Batch formula software thereof of American I NVENSYS company.Formula software comprises order functional block, function for monitoring piece, timing register and macro adjustments and controls program.Because the sequence of control of two cover xanthating machines and two cover dissolving machines is identical, present embodiment is elaborated to the sequence of control of 1# xanthating machine and 1# dissolving machine.
The apparatus that uses in this technology comprises vacuum pump, adds carbon pipeline, scale hooper and xanthating machine, thick homogenizer, alkali jar, exhaust blower, motor, valve valve, this technology is divided into yellow and dissolving two procedures, the equipment that needs in the operation is used the software control of DCS Control Configuration respectively, input, the output terminal of wherein controlling yellow operation electric motors function piece are connected with motor, the input of valve function piece, output terminal are connected with valve, and motor, valve function piece are write with the DCS control software.Described processing step is, dry xanthation:, after with vacuum pump xanthating machine being evacuated, in xanthating machine, add CS2 by adding the carbon pipeline with putting into xanthating machine after the fine weighing of alkali, CS2 with gas form in xanthating machine with the fine reaction of alkali after 60 minutes, the yellow reaction finishes.Dissolving: after yellow reaction finishes, add low-temperature alkaline again in the xanthating machine and dissolve, added low-temperature alkaline accounts for 1/2 of total alkali content, and dissolution time is 1 hour, promptly makes viscose fiber glue.
Referring to accompanying drawing 1, the yellow operation is divided into 28 steps with it, and dissolving is divided into ten steps.Earlier an xanthating machine startup is brought into operation, treat that it runs to suitable intermediate steps, promptly this batch of material has used vacuum pump, has added carbon pipeline, scale hooper, and another xanthating machine possesses the condition that begins to produce, and brings into operation.Two xanthating machine interleaved operations.Concrete steps are, 1～13 step is for checking xanthating machine equipment state, charging, vacuumize, add CS2 and carry out dry xanthation, the shared device that uses in this section period as scale hooper, vacuum pump, add the CS2 pipeline.14～28 go on foot to after the yellow reaction end, add a certain amount of low-temperature alkaline and dissolve, and promptly make the viscose glue that production needs.The shared device that uses in this section period is thick homogenizer, alkali jar, exhaust blower.
Dissolving runs to yellow from xanthating machine and reacts completely and finish the 23rd step that blowing is prepared in the back, and the operating procedure of corresponding xanthating machine is carrying out dissolving program accordingly.When first xanthating machine moved preceding 13 steps, second xanthating machine brought into operation, two xanthating machine alternate runs.The operation of controlling xanthating machine with the I/A series DCS Controlling System and the Batch formula software thereof of American I NVENSYS company.Concrete controlled step is:
The DCS Control Configuration software that at first stability in use is high to the equipment that needs in the yellow operation to control as: the sequence of control configuration that motor, valve etc. carries out the state of equipment own is the electric motors function piece, and the valve function piece is controlled.
Electric motors function piece of the present invention comprises three parts: importation, logic control part, output.With first xanthating machine is example, the input terminus of electric motors function piece and scale hooper discharging motor EU14046, EU14053, EU14058, blowing motor EU14060, vacuum pump EU14008, yellow slowspeed machine EU14036, speed motor EM14037 in the yellow, yellow high-speed electric expreess locomotive EH14037, thick homogenizer motor EU14092 and slightly under the homogenizer feedback signal of viscose pump EU14094 be connected, output terminal is connected with rly..The input terminus of electric motors function piece carries out the logic analysis judgement according to every state of each motor input, gives an order, and signal is delivered to each motor regulator cubicle of electric control room by rly..
Valve function piece and electric motors function piece are similar, also comprise importation, logic control part, output three parts.The input terminus of valve function piece with vacuumize valve KS14058, xanthating machine valve for air exhaust KS14059, xanthating machine jacket water (J.W.) heating valve KS14060, xanthating machine discharging valve KS14061, the sub-valve KS14062 of xanthating machine bleeder valve door bolt, the feedback signal of xanthating machine Ventilating valve KS14173 connects, and output terminal is connected with valve site, and the DCS Controlling System in rly. and watch-keeping cubicle connects letter and connects.
By motor, valve function piece, can guarantee that operational outfit is in a safe condition constantly, be the basis of whole yellow technology controlling and process.
Totally 28 of the controlled step of yellow technology, concrete steps are as follows:
To accept the order of processing requirement, receive electric control room and the on-the-spot signal that feeds back to motor, valve function piece, output command.
The first step: beginning.The first step program begins, and this step phase place is 1, starts this step timing register, at first yellow technology relevant each motor, valve is carried out the state initialize of this step, promptly closes all electric machine valves, and this step finishes.
Second step: wait for.The second step program begins, and this step phase place is 2, starts this step timing register, opens valve KS14052, KS14053, KS14059, closes all motors and all the other valves, checks dissolving machine and scale hooper, makes it reach specified requirement, and this step finishes.
The 3rd step: safety dumping.The 3rd step program begins, and this step phase place is 3, starts this step timing register, opens KS14052, KS14053, KS14059, KS14061, KS14062, closes all motors and all the other valves, closes all motors and all valves, and this step finishes.This step phase parameter: time=15s
The 4th step: vacuum test.The 4th step program begins, and this step phase place is 4, starts this step timing register, start EU14008, open KS14010, KS14013, KS14056, KS14058, KS14060, close all the other motors and valve, when the xanthating machine internal pressure reached set(ting)value, this step finished.This step phase parameter: set(ting)value=0.6bar.
The 5th step: emptying.The 5th step program begins, and this step phase place is 5, starts this step timing register, open KS14053, KS14060, close all the other motors and valve, detect the xanthating machine internal pressure and whether reach this step setup parameter, whether KS14053 opened? after satisfying condition, this step finishes.This step phase parameter: setup parameter=1.1bar
The 6th step: open the fine baiting valve of alkali.This step phase place is 6, start this step timing register, start EU14036, open KS14052, KS14060, KS14173, close all the other motors and valve, whether detect the xanthating machine stirring at low speed starts, check whether valve KS14052 is in open mode,, then start this motor if do not satisfy condition, open KS14052, this step of back that satisfies condition finishes.
The 7th step: xanthating machine charging.Seven-step procedure begins, and this step phase place is 7, starts EU13046, EU13053, EU13058, EU13060, EU14036, open KS14052, KS14060, KS14173, close all the other motors and valve, detect scale hooper and whether put material, start this step timing register, timing is to setting-up time.Stop EU13046, EU13053, EU13058.This step phase parameter: time=20s
The 8th step: close the fine baiting valve of yellow alkali.The 8th step program begins, and this step phase place is 8, starts this step timing register, closes all motors and valve, detects EU13046, EU13053, EU13058, EU13060, whether KS14052 closes or stops this step end after satisfying condition.
The 9th step: vacuumize.The 9th step program begins, and this step phase place is 9, starts EU14008, opens KS14010, KS14013, KS14056, KS14058, closes all the other motors and valve, when the xanthating machine internal pressure reaches this step during setup parameter, the end of this step.This step phase parameter: set(ting)value=0.13bar
The tenth step: vacuum detecting.The tenth step program begins, this step phase place is 10, start this step timing register, start EU14036, close all the other motors and valve, detect the xanthating machine internal pressure and reach set(ting)value 1? does yellow agitator motor power reach set(ting)value 2? is the integrated flow of CS2 less than 5 at this moment? does the control timing register time reach the phase parameter setting-up time? if after satisfying these conditions, this step finishes.This step phase parameter: set(ting)value 1=0.18bar, set(ting)value 2=35KW, this step phase time Time=60s
The 11 step: add CS2.The 11 step program begins, this step phase place is 11, start this step timing register, start EU14036, open KS14003, KS14005, close all the other motors and valve, add CS2 in the xanthating machine, detection CS2 add-on reaches set(ting)value or the control timing register time reaches the phase parameter setting-up time? as long as satisfy one of them condition, this step finishes.This step phase parameter: CS2 add-on set(ting)value=20000L, this step phase time time=1200s
The 12 step: yellow 1.The 12 step program begins, and this step phase place is 12, starts this step timing register, starts EU14036, closes all the other motors and valve, and whether the detection timing register time reaches phase time, and after satisfying condition, this step finishes.This step phase parameter: time=1500s
The 13 step: yellow 2.The 13 step program begins, this step phase place is 13, start this step timing register, start EU14036, close all the other motors and valve, detecting the xanthating machine internal pressure and whether reach set(ting)value 1, does pressure reach set(ting)value 2 after a while again? does the yellow built-in temperature reach set(ting)value 3? after satisfying condition, this step finishes.This step phase parameter: set(ting)value 1=0.85bar, set(ting)value 2=1.0bar, set(ting)value 3=30 ℃
The 14 step: yellow finishes.The 14 step program begins, and this step phase place is 14, starts this step timing register, start EU14036, close all the other motors and valve, detect dissolving alkali jar liquid level and reach set(ting)value 1? whether alkali number reaches set(ting)value 2 in the dissolving alkali jar, after if satisfy condition, this step finishes.This step phase parameter: set(ting)value 1=85%, set(ting)value 2=23000L
The 15 step: dissolving alkali adds 1.The 15 step program begins, and this step phase place is 15, starts this step timing register, starts EU14036, opens KS14024, KS14027, KS14054, closes all the other motors and valve, detect dissolving alkali lye position and reach set(ting)value? after satisfying condition, this step finishes.This step phase parameter: set(ting)value=25%
The 16 step: stir.The 16 step program begins, and this step phase place is 16, starts this step timing register, starts EM14037, closes all the other motors and valve, checks timing register, and when timing time reaches phase settings during the time, this step finishes.This step phase parameter: time=60s
The 17 step: ventilate.Whether the tenth seven-step procedure begins, and this step phase place is 17, starts this step timing register, starts EM14037, opens KS14053, closes all the other motors and valve, detect KS14053 and open, and checks timing register, and after satisfying these conditions, this step finishes.This step phase parameter: time=30s
The 18 step: open xanthating machine.The 18 step program begins, and this step phase place is 18, starts this step timing register, starts EM14037, opens KS14053, KS14059, closes all the other motors and valve, checks timing register, and the timing register time reaches the phase settings time, and this step finishes.This step phase parameter: time=30s
The 19 step: discharging.The 19 step program begins, and this step phase place is 19, starts this step timing register, starts EU14036, open KS14053, KS14059, close all the other motors and valve, be ready to the 1# dissolving machine, check timing register, the timing register time reaches the phase settings time, and this step finishes.This step phase parameter: time=30s
The 20 step: pre-discharge.The 20 step program begins, this step phase place is 20, starts this step timing register, starts EM14037, EU14092, open KS14053, KS14059, whether close all the other motors and valve, detect EU14092 and start, whether KS14100 is opened for dissolving machine charging valve, in the thin homogenizer quantity of broad gap work whether greater than 2, after satisfying these conditions, prepare toward the charging of 1# dissolving machine, this step finishes
The 21 step: discharge 1.The 21 step program begins, and this step phase place is 21, starts this step timing register, starts EM14037, EU14092, EU14094, opens KS14053, KS14059, KS14061, KS14062, closes all the other motors and valve.Detect dissolving bucket liquid level and reach set(ting)value? whether the timing register time reaches the phase parameter set(ting)value, satisfy these conditions after, this step finishes, this step phase parameter: set(ting)value=70%, TIME=30s
The 22 step: dissolving alkali adds 2.The 22 step program begins, this step phase place is 22, start this step timer initiation EM14037, EU14092, EU14094, open KS14024, KS14027, KS14053, KS14054, KS14059, KS14061, KS14062, close all the other motors and valve, the timing register time reaches the phase settings time, and this step finishes.This step phase parameter: TIME=30s
The 23 step: close xanthating machine.The 23 step program begins, and this step phase place is 23, starts this step timing register, start EM14037, EU14092, open KS14053, KS14059, close all the other motors and valve, whether detect KS14061, KS14062 and close, after satisfying condition, this step finishes.
The 24 step: dissolving alkali adds 3.The 24 step program begins, this step phase place is 24, start this step timing register, start EM14037, EU14092, open KS14025, KS14027, KS14053, KS14054, KS14059, close all the other motors and valve, detect dissolving alkali jar liquid level and whether reach set(ting)value, check whether the timing register time reach the phase parameter set(ting)value, satisfy these conditions after, this step finishes.This step phase parameter: set(ting)value=5%, TIME=100s
The 25 step: flushing.The 25 step program begins, and this step phase place is 25, starts this step timing register, starts EH14037, EU14092, EU14094, closes all the other motors and valve, checks timing register, and the time reaches the phase parameter set(ting)value, and this step finishes.This step phase parameter: TIME=240s
The 26 step: blowing 2.The 26 step program begins, this step phase place is 26, start this step timer initiation EU14036, EU14092, EU14094, open KS14053, KS14059, KS14061, KS14062, close all the other motors and valve, detect dissolving bucket liquid level and reach set(ting)value? check timing register, the timing register time reaches the phase parameter set(ting)value, after satisfying these conditions, this step finishes.This step phase parameter: set(ting)value=85%, TIME=60s
The 27 step: xanthating machine emptying.The 20 seven-step procedure begins, and this step phase place is 27, starts this step timing register, start EU14036, open KS14052, KS14053, KS14059, KS14060, KS14061, KS14062, close all the other motors and valve, check timing register, the timing register time reaches the phase parameter set(ting)value, this step finishes, and checks after the end whether production batch changes, and is divided into for two steps to carry out, if no change turns to the beginning in second step, turn to the beginning in the 28 step if change.This step phase parameter: TIME=240s
The 28 step: finish.The 28 step program begins, and this step phase place is 28, starts this step timing register yellow technology relevant each motor, valve are carried out the state initialize of this step, promptly closes all electric machine valves, and this step finishes
The dissolving machine relevant device has:
Thin homogenizer motor: EU14104, EU14108, EU14112, EU14204, EU14208
Thin homogenizing tuningout motor: EU14105, EU14109, EU14113, EU14205, EU14209
Dissolving bucket below viscose pump: EU14120, EU14122, EU14220
Advance glue valve: KS14100
Glue circulation valve: KS14101
Plastic emitting valve: KS14102
The prescription program of 1# dissolving machine is:
The first step: prepare the first step program and begin, this step phase place is 1, starts this step timing register dissolution process relevant each motor, valve are carried out the state initialize of this step, promptly closes all electric machine valves, and this step finishes
Second step: wait for.The second step program begins, and this step phase place is 2, starts this step timing register, start the tuningout motor, allow them all transfer to the broad gap position, close all the other all motors and valves, detect dissolving machine and whether be ready to, check that the 1# xanthating machine is in the 20th step? after satisfying these conditions, this step finishes
The 3rd step: blowing 1.The 3rd step program begins, and this step phase place is 3, starts this step timing register, start thin homogenizing motor, open KS14100, close all the other motors and valve, detect dissolving bucket liquid level and reach set(ting)value? after satisfying condition, this step finishes this step phase parameter: set(ting)value=70%
The 4th step: thick homogenizing.The 4th step program begins, and this step phase place is 4, starts this step timing register, starts viscose pump, opens KS14101, closes all the other motors and valve, and after the timing register time reached the phase parameter set(ting)value, this step finished, this step phase parameter: TIME=20s
The 5th step: blowing 2.The 5th step program begins, and this step phase place is 5, starts this step timing register, starts thin homogenizing motor, opens KS14100, closes all the other motors and valve, detect dissolving bucket liquid level and reach set(ting)value? after satisfying condition, this step finishes.This step phase parameter: set(ting)value=85%
The 6th step: transfer broad gap.The 6th step program begins, and this step phase place is 6, starts this step timing register, starts viscose pump, thin homogenizing motor, opens KS14101, closes all the other motors and valve, and after the timing register time reached the phase parameter set(ting)value, this step finished.This step phase parameter: TIME=30s
The 7th step: turn the gap down.Seven-step procedure begins, this step phase place is 7, start this step timing register, start viscose pump, thin homogenizing motor, adjust the play motor (moving to narrow interstitial site), open KS14101, close all the other motors and valve, whether the timing register time has reached the phase parameter set(ting)value, does viscose tank in the operation of back possess the blowing condition? after satisfying these conditions, this step finishes.This step phase parameter: TIME=3600s
The 8th step: switch.Whether the 8th step program begins, and this step phase place is 8, starts this step timer initiation viscose pump, thin homogenizing motor, opens KS14102, closes all the other motors and valve, detect KS14101 and close, and whether KS14102 opens, and after satisfying condition, this step finishes
The 9th step: discharge.The 9th step program begins, and this step phase place is 9, starts this step timing register, starts viscose pump, thin homogenizing motor, adjust the play motor (moving to the broad gap position), opens KS14102, closes all the other motors and valve.Detecting dissolving bucket liquid level and whether reach set(ting)value, does production batch change? if no change turns to the beginning in second step, this step finishes.If change, turn to the beginning in the tenth step, this step finishes.This step phase parameter: set(ting)value=3%
The tenth step: finish the tenth step program and begin, this step phase place is 10, starts this step timing register dissolution process relevant each motor, valve are carried out the state initialize of this step, promptly closes all electric machine valves.This step finishes
Each prescription step is all carried out the condition in corresponding this step and is detected, and has only the testing conditions of satisfying, and just can forward next step to.
Claims (4)
1, a kind of technology with the yellow of prescription time variable control viscose staple fibre, the I/A series DCS Controlling System and the Batch formula software thereof that comprise American I NVENSYS company, described processing unit comprises vacuum pump, add the carbon pipeline, scale hooper and xanthating machine, thick homogenizer, the alkali jar, exhaust blower, motor, valve, this technology is divided into yellow and dissolution process, it is characterized in that, the equipment that needs in the yellow operation is used the software control of DCS Control Configuration respectively, wherein control the input of yellow operation electric motors function piece, output terminal is connected with motor, the input of valve function piece, output terminal is connected with valve, motor, valve controlled function piece is write with the DCS control software; Described yellow processing step is, dry xanthation:, after with vacuum pump xanthating machine being evacuated, in xanthating machine, add CS2 by adding the carbon pipeline with putting into xanthating machine after the fine weighing of alkali, CS2 with gas form in xanthating machine with the fine reaction of alkali after, the yellow reaction finishes; Dissolving: after yellow reaction finishes, add low-temperature alkaline again in the xanthating machine and dissolve, added low-temperature alkaline accounts for 1/2 of total alkali content, and dissolution time is 1 hour, promptly makes viscose fiber glue.
2, the technology with the yellow of prescription time variable control viscose staple fibre according to claim 1, it is characterized in that, described xanthating machine is two, earlier an xanthating machine is started operation, after treating that first batch of material uses vacuum pump, adds carbon pipeline, scale hooper, restart another xanthating machine operation, two xanthating machine interleaved operations.
3, the technology with the yellow of prescription time variable control viscose staple fibre according to claim 1 and 2, it is characterized in that, two xanthating machine operating procedures are, 1～13 step is for checking xanthating machine equipment state, charging, vacuumize, add CS2 and carry out dry xanthation, the shared device that uses in this section period as scale hooper, vacuum pump, add the CS2 pipeline; 14～28 steps were the yellow reaction dissolving step after finishing, and the shared device that uses in this section period is thick homogenizer, alkali jar, exhaust blower, dissolved with alkali jar adding low-temperature alkaline in the xanthating machine, promptly make production need viscose glue.
4, according to claim 1 or 3 described technologies with the yellow of prescription time variable control viscose staple fibre, it is characterized in that, described dissolution process runs to yellow from xanthating machine and reacts completely back the 23rd step of preparing blowing of end, and the operating procedure of corresponding xanthating machine carries out the dissolving program.
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| CN 200610102080 CN1986571A (en) | 2006-10-24 | 2006-10-24 | Technological process of controlling yellowing of short viscose fiber by means of recipe program |
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| CN 200610102080 CN1986571A (en) | 2006-10-24 | 2006-10-24 | Technological process of controlling yellowing of short viscose fiber by means of recipe program |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393694A (en) * | 2011-09-27 | 2012-03-28 | 宜宾海丝特纤维有限责任公司 | Yellowing automatic control system in production of short fiber stock solution viscose |
| CN104004102A (en) * | 2014-06-06 | 2014-08-27 | 成都丽雅纤维股份有限公司 | Yellowing system for viscose fiber production |
| CN104004103A (en) * | 2014-06-06 | 2014-08-27 | 成都丽雅纤维股份有限公司 | Yellowing process of viscose production |
-
2006
- 2006-10-24 CN CN 200610102080 patent/CN1986571A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393694A (en) * | 2011-09-27 | 2012-03-28 | 宜宾海丝特纤维有限责任公司 | Yellowing automatic control system in production of short fiber stock solution viscose |
| CN102393694B (en) * | 2011-09-27 | 2014-08-20 | 宜宾海丝特纤维有限责任公司 | Yellowing automatic control system in production of short fiber stock solution viscose |
| CN104004102A (en) * | 2014-06-06 | 2014-08-27 | 成都丽雅纤维股份有限公司 | Yellowing system for viscose fiber production |
| CN104004103A (en) * | 2014-06-06 | 2014-08-27 | 成都丽雅纤维股份有限公司 | Yellowing process of viscose production |
| CN104004103B (en) * | 2014-06-06 | 2016-02-10 | 成都丽雅纤维股份有限公司 | The yellow technique that a kind of viscose fiber is produced |
| CN104004102B (en) * | 2014-06-06 | 2016-02-10 | 成都丽雅纤维股份有限公司 | Yellow system in a kind of viscose fiber production |
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