CN107354517A - Two one deaeration techniques of dipping - Google Patents
Two one deaeration techniques of dipping Download PDFInfo
- Publication number
- CN107354517A CN107354517A CN201710572950.5A CN201710572950A CN107354517A CN 107354517 A CN107354517 A CN 107354517A CN 201710572950 A CN201710572950 A CN 201710572950A CN 107354517 A CN107354517 A CN 107354517A
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- glue
- deaeration
- valve
- vacuum
- deaerator
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/02—Preparation of spinning solutions
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/10—Filtering or de-aerating the spinning solution or melt
- D01D1/103—De-aerating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The present invention relates to one kind two to impregnate a deaeration technique, belongs to the fibre technical field made of inorganic matter or its complex processing fiber, yarn, line, fabric or these materials.By deaerator, glue inlet tube, go out sebific duct and surge pipe is formed, described glue inlet tube, go out sebific duct and surge pipe is connected with deaerator respectively, surge pipe be connected with four it is separate be in charge of, respectively compressed air hose, pre- de- vacuum tube, quiet de- vacuum tube and blow-down pipe.Apply the present invention to the bubble removal steps such as maturation and the sulfonation of the analogs such as pulp, have the advantages that deaeration is uniform, degree of ripeness is high.
Description
Technical field
The present invention relates to one kind two impregnate a deaeration technique, belong to inorganic matter or its complex processing fiber, yarn, line,
Fibre technical field made of fabric or these materials.
Background technology
The process for pulp being made viscose glue is：Feed the dregs of rice → dipping → squeezing → crushing → experienced → rear dissolving → grinding → sulphur
Spinning is filtered → sent in change → cooling → mixing → filtering → middle bucket → filtering → deaeration →, in above process, to pass through two
Individual chemical process：Pulp and alkali lye are acted on first, generate alkali cellulose, alkali cellulose is acted on carbon disulfide again,
Generate cellulose xanthate pulp.Wherein in sulfonation and the process such as experienced, due to bubble can be produced during feeding intake, these gas
Steep oneself-meeting and have influence on the properties of product of product, therefore, in sulfonation, experienced process, conventional way is that additional vavuum pump progress is quiet
De-, although this mode reduces foam number to a certain extent, for the production of continuous feed, these new sizing materials enter
When, it is negative pressure that former bucket is interior, less than the normal pressure of new sizing material, therefore can cause the backflow of glue, and bubble pulls in the sizing material in bucket
Power is too small, can not fully complete deaeration.
Based on this, the application is made.
The content of the invention
Drawbacks described above in the presence of being processed for existing pulp, the application provide a kind of deaeration uniformly, bubble rate only
Two one deaeration techniques of dipping high, residual silkgum content is few.
To achieve the above object, the technical scheme that the application takes is as follows：
Two one deaeration techniques of dipping, by deaerator, glue inlet tube, go out sebific duct and surge pipe is formed, described glue inlet tube, go out sebific duct and
Surge pipe is connected with deaerator respectively, surge pipe be connected with four it is separate be in charge of, respectively compressed air hose, pre- de- true
Blank pipe, quiet de- vacuum tube and blow-down pipe；Pre- de- vacuum tube is opened, vacuum will be evacuated in deaerator；Glue inlet tube is opened, in charging
Carry out high vacuum deaeration；After adhesive liquid quantity in deaerator to setting value, glue inlet tube and pre- de- vacuum tube are closed, opens quiet de- vacuum
Manage, after deaeration 16-24h, close quiet de- vacuum tube, open compressed air hose, be forced into more than vacuum, close compressed air hose,
Sebific duct is opened out, viscose glue is delivered to forming machine, after treating glue discharge, sebific duct is closed out, blow-down pipe is opened, by deaerator
After interior air emptying, blow-down pipe is closed, that is, completes two one deaeration techniques of dipping of a cycle.
Further, as preferred：
Set on described glue inlet tube into glue valve, for control into glue process starting and enter glue amount.
When described glue inlet tube and pre- de- vacuum tube are closed, the glue liquid level in deaerator is not less than the 2/ of deaerator height
3, more than liquid level it is no more than the 1/3 of deaerator height.
The described port of export for going out sebific duct is divided into two, connects plastic emitting valve and surplus glue valve respectively, goes out sebific duct and glue is carried out
Discharge, surplus glue valve to less than it is a certain amount of when glue discharge.It is furthermore preferred that after described compressed air hose is closed, first beat
Output glue valve and carry out discharge opeing, when glue liquid level is less than setting value, close plastic emitting valve, surplus glue valve is opened, by remaining bucket primer
Liquid is emitted in middle bucket.When described plastic emitting valve is opened, glue liquid level is no more than the 1/3 of deaerator height.Different amounts of glue
Liquid is different to the effect of dragging of bubble, and when glue is drained into forming machine, initial pressure is larger, and have passed through pre- de- and quiet de-
After twice, the bubbles volume in glue can reach perfect condition, and the glue now emitted may be directly applied to forming machine, and work as
When glue is less than the 1/3 of deaerator, pressure differential reduces, and bubble has certain residual in glue, is not suitable for being molded, after
It is continuous to influence the effect of deaeration early stage when being supplied into forming machine, and be trapped in degumming bucket, then can be because of multiple experienced, sulphur
Change, cause the quality of glue to have differences, be not suitable for equally producing, remain the setting of glue valve, the glue in deaerator is divided into
Two kinds, and discharge respectively, deaeration effect has both been ensure that, turn avoid influence of the glue not up to standard to forward and backward batch glue.
Described pre- de- vacuum tube one end is connected with pre- de- vavuum pump, and the other end is connected by pre- de- vacuum valve and surge pipe
Connect；Described quiet de- vacuum tube one end is connected with quiet de- vavuum pump, and the other end is connected by quiet de- vacuum valve with surge pipe.It is pre- de- true
Empty valve and quiet de- vacuum valve are respectively used to control the break-make of pre- de- vacuum tube, quiet de- vacuum tube and surge pipe, and pre- de- vacuum tube
Pass through different vavuum pump respectively from quiet de- vacuum tube and carry out vacuum regulation and control, it is ensured that be pre- de- to be taken off with quiet to be parallel to each other and independent
Two processes, pressure regulation shakiness is avoided to cause deaeration effect poor.
Compression vacuum valve is set on described compression vacuum pipe, for controlling the break-make of compression vacuum pipe and surge pipe.
Installation of relief valve on described blow-down pipe, for controlling the break-make of blow-down pipe and surge pipe.
Before described glue inlet tube is opened, the pressure P in deaerator1, will be de- after compressed air hose is opened for -0.092MPa
Steep the pressure P in bucket3Increase to 0.4-0.6MPa.
The operation principle of the application is described as follows：
After checking that each valve is closed, pre- de- vacuum valve is opened, vacuum is evacuated to vacuum（Preferably -0.092MPa）
When, glue inlet tube is opened, high vacuum deaeration is carried out in charging；When in deaerator liquid level to setting value（Preferably up to deaerator
Volume 2/3 or so when）Afterwards, glue inlet tube is closed, closes pre- de- vacuum tube, opens quiet de- vacuum tube, after deaeration 16-24h, is closed
Quiet de- vacuum tube, compressed air hose is opened, is forced into more than vacuum（Preferably 0.4-0.6MPa）, compressed air hose is closed, is beaten
Sebific duct is outputed, viscose glue is delivered to forming machine, when liquid level is reduced to Process Planning definite value（Preferably near the 1/3 of deaerator volume）
Afterwards, plastic emitting valve is closed, opens surplus glue valve, after bucket primer is sent into middle bucket, surplus glue valve is closed, blow-down pipe is opened, by deaeration
After atmosphere in the tub emptying, after closing blow-down pipe, the two dipping one deaeration work in next cycle are being carried out.
Compared with conventional maturation deaeration mode, the beneficial effect embodiment of the application is as follows：
（1）Be arrangeding in parallel, one is pre- de- and one is quiet de-, it is pre- de- and it is quiet it is de- connect separate vavuum pump respectively, according to charging
The difference in stage, bubble removal step is divided into pre- de- and quiet de- two procedures, deaeration is more uniform, and deaeration is more efficient, improves
The amount of cure of glue and the uniformity of quality.
（2）According to the different stages of reaction, the connection by surge pipe from different pipelines, the tune of pressure in degumming bucket is realized
Control, and then the demand of production different phase is met, improve the sensitivity of the directive property controlled in course of reaction and control.
（3）Discharge is divided into two stages, after first deaeration is handled with plastic emitting valve by the application according to the difference of remaining glue amount
Glue be emitted into forming machine and normally produced, remaining a small amount of remaining bucket primer liquid is because pressure is relatively low and bubble contains
Amount is not up to standard, now closes plastic emitting valve, opens surplus glue valve, and while avoiding the cull from entering forming machine, remaining glue is individually drained into
In middle bucket.
Brief description of the drawings
Fig. 1 is the structural representation of the application；
Fig. 2 is using the pre- de- feed state schematic diagram of the application；
Fig. 3 is using the quiet de- view of the application；
Fig. 4 is the application pressurized state schematic diagram；
Fig. 5 is the application plastic emitting view；
Fig. 6 is that the application remains glue emissions status schematic diagram；
Fig. 7 is that the application degumming bucket is vented view.
Label in figure：1. degumming bucket；2. glue inlet tube；21. enter glue valve；3. go out sebific duct；31. plastic emitting valve；32. surplus glue
Valve；4. surge pipe；5. compressed air hose；51. compressed air valve；6. pre- de- vacuum tube；61. pre- de- vavuum pump；It is 62. pre-
De- vacuum valve；7. quiet de- vacuum tube；71. quiet de- vavuum pump；72. quiet de- vacuum valve；8. blow-down pipe；81. atmospheric valve.
Embodiment
Embodiment 1
The present embodiment two impregnates a deaeration technique, with reference to Fig. 1, by deaerator 1, glue inlet tube 2, goes out sebific duct 3 and surge pipe 4 is formed,
Glue inlet tube 2, go out sebific duct 3 and surge pipe 4 is connected with deaerator 1 respectively, surge pipe 4 be connected with four it is separate be in charge of, point
Wei not compressed air hose 5, pre- de- vacuum tube 6, quiet de- vacuum tube 7 and blow-down pipe 8.
With reference to Fig. 2, it is ensured that after other pipelines disconnect with deaerator 1, first open pre- de- vacuum tube 6, will be evacuated in deaerator 1
Vacuum, now pressure P1For -0.092MPa；Glue inlet tube 2 is opened, high vacuum deaeration is carried out in charging, the quiet de- stage completes
Saponification, its hydrolysis time are about 20h；After adhesive liquid quantity to setting value in deaerator 1, with reference to Fig. 3, glue inlet tube 2 and pre- de- is closed
Vacuum tube 6, open quiet de- vacuum tube 7, vacuum defoamation 16-24h, in this process, due to having bubble gradually from glue
In spin off and enter in cavity more than liquid level, pressure P2For dynamic value；With reference to Fig. 4, quiet de- vacuum tube 7 is closed, is opened
Compressed air hose 5 is opened, is forced into pressure P3For 0.4-0.6MPa, with reference to Fig. 5 and Fig. 6, compressed air hose 5 is closed, opens plastic emitting
Pipe 3, viscose glue is delivered to forming machine, in this stage, glue is gradually being reduced, and the space in degumming bucket 1 gradually increases, accordingly
Pressure P4、P5For dynamic value, after treating glue discharge, with reference to Fig. 7, sebific duct 3 is closed out, blow-down pipe 8 is opened, by deaerator 1
Interior air emptying, now the pressure in deaerator 1 is P6, blow-down pipe 8 is closed, that is, completes two one deaeration works of dipping of a cycle
Skill.After closing above-mentioned all pipelines being connected with deaerator 1, pre- de- vacuum tube 6 is first opened, deaerator 1 is evacuated to vacuum again,
Glue inlet tube 2 is opened, just feeds just progress high vacuum deaeration, so starts second two one deaeration cycle of dipping.
To realize more preferable using effect, such scheme is further arranged to：
Set on glue inlet tube 2 into glue valve 21, for control into glue process starting and enter glue amount.
To realize more preferable using effect, such scheme is further arranged to：
When glue inlet tube 2 and pre- de- vacuum tube 6 are closed, liquid level is about the 2/3 of the height of deaerator 1 in deaerator 1, and liquid level with
On then be about deaerator height 1/3.
To realize more preferable using effect, such scheme is further arranged to：
The port of export for going out sebific duct 3 is divided into two, connects plastic emitting valve 31 respectively and surplus glue valve 32, plastic emitting valve 31 are arranged glue
Put, surplus glue valve 32 to less than it is a certain amount of when glue discharge.It is furthermore preferred that after compressed air hose 5 is closed, plastic emitting is first opened
Valve 31 carries out discharge opeing, when liquid level is less than 1/3, closes plastic emitting valve 31, opens surplus glue valve 32, remaining bucket primer liquid is arranged
It is placed in middle bucket.
Different amounts of glue is different to the effect of dragging of bubble, when glue is drained into forming machine process, in glue
Bubble is gradually increasing until disengaging glue, is entered in space more than liquid level, and initial pressure is larger, and have passed through pre- de- and quiet
After taking off twice, the bubbles volume in glue can reach perfect condition, and the glue now emitted may be directly applied to forming machine, and
When glue is less than the 1/3 of deaerator, pressure differential reduces, and bubble has certain residual in glue, is not suitable for being molded,
When continuing to be supplied into forming machine, the effect of deaeration early stage can be influenceed, and be trapped in degumming bucket 1, then can because repeatedly it is experienced,
Sulfonation, causes the quality of glue to have differences, and is not suitable for equally producing, and the setting of glue valve 32 is remained, by the glue in deaerator 1
It is divided into two kinds, and discharges respectively, both ensure that deaeration effect, turn avoid influence of the glue not up to standard to forward and backward batch glue.
To realize more preferable using effect, such scheme is further arranged to：
Pre- one end of de- vacuum tube 6 is connected with pre- de- vavuum pump 61, and the other end is connected by pre- de- vacuum valve 62 with surge pipe 4；It is quiet
De- one end of vacuum tube 7 is connected with quiet de- vavuum pump 71, and the other end is connected by quiet de- vacuum valve 72 with surge pipe 4.Pre- de- vacuum
Valve 62 is respectively used to control the break-make of pre- de- vacuum tube 6, quiet de- vacuum tube 7 and surge pipe 4 with quiet de- vacuum valve 72, and pre- de- true
Blank pipe 6 and quiet de- vacuum tube 7 pass through different vavuum pumps and carry out vacuum regulation and control respectively, it is ensured that it is pre- it is de- with it is quiet take off to be parallel to each other and
Two independent processes, avoid pressure regulation shakiness from causing deaeration effect poor.
To realize more preferable using effect, such scheme is further arranged to：
Compression vacuum valve 51 is set on compression vacuum pipe 5, for controlling the break-make of compression vacuum pipe 5 and surge pipe 4.
To realize more preferable using effect, such scheme is further arranged to：
Installation of relief valve 81 on blow-down pipe 8, for controlling the break-make of blow-down pipe 8 and surge pipe 4.
The operation principle of the present embodiment is described as follows：
After checking that each valve is closed, pre- de- vavuum pump 61 and pre- de- vacuum valve 62 are opened, will be evacuated in deaerator 1 true
It is empty（Preferably -0.092MPa）When, open and enter glue valve 21 on glue inlet tube 2, high vacuum deaeration is carried out in charging；Work as deaerator
Liquid level is closed on glue inlet tube 2 and enters glue valve 21, close pre- de- vacuum tube 6 to setting value in 1, opens quiet de- vavuum pump 71 and quiet
De- vacuum valve 72, quiet de- vacuum tube 7 is connected by surge pipe 4 with deaerator 1, after deaeration 16-24h, closes quiet de- vacuum tube 7,
Compressed air hose 5 is opened, is forced into more than vacuum, compressed air hose 5 is closed, the plastic emitting valve 31 on sebific duct 3 is opened out, by viscose glue
Forming machine is delivered to, after liquid level is reduced to Process Planning definite value, closes plastic emitting valve 31, surplus glue valve 31 is opened, by bucket primer force feed
To after middle bucket, surplus glue valve 32 is closed, opens blow-down pipe 8, after air emptying in deaerator 1, after closing blow-down pipe 8, is being entered
The two dipping one deaeration work in row next cycle.
Compared with conventional maturation deaeration mode, the beneficial effect embodiment of the application is as follows：
（1）Be arrangeding in parallel, one is pre- de- and one is quiet de-, it is pre- de- and it is quiet it is de- connect separate vavuum pump respectively, according to charging
The difference in stage, bubble removal step is divided into pre- de- and quiet de- two procedures, deaeration is more uniform, and deaeration is more efficient, improves
The amount of cure of glue and the uniformity of quality.
（2）According to the different stages of reaction, the connection by surge pipe 4 from different pipelines, pressure in degumming bucket 1 is realized
Regulation and control, and then the demand of production different phase is met, improve the sensitivity of the directive property controlled in course of reaction and control.
（3）Discharge is divided into two stages, is first handled deaeration with plastic emitting valve 31 by the application according to the difference of remaining glue amount
Glue afterwards, which is emitted into forming machine, normally to be produced, and remaining a small amount of remaining bucket primer liquid is because pressure is relatively low and bubble
Content is not up to standard, now closes plastic emitting valve 31, opens surplus glue valve 32, while avoiding the cull from entering forming machine, remaining glue is independent
Drain into middle bucket.
Above content be with reference to the invention preferred embodiment provided technical scheme is made it is further detailed
Describe in detail bright, it is impossible to assert that the invention specific implementation is confined to these above-mentioned explanations, for the affiliated technology of the invention
For the those of ordinary skill in field, without departing from the concept of the premise of the invention, some simple deductions can also be made
Or replace, it should all be considered as belonging to the protection domain of the invention.
Claims (10)
1. two one deaeration techniques of dipping, it is characterised in that：By deaerator, glue inlet tube, go out sebific duct and surge pipe is formed, described enters
Sebific duct, go out sebific duct and surge pipe is connected with deaerator respectively, surge pipe be connected with four it is separate be in charge of, respectively compress
Air hose, pre- de- vacuum tube, quiet de- vacuum tube and blow-down pipe；In the state of other pipelines closing, pre- de- vacuum tube is opened, will
Vacuum is evacuated in deaerator；Glue inlet tube is opened, high vacuum deaeration is carried out in charging；Treat in deaerator adhesive liquid quantity to setting value
Afterwards, glue inlet tube and pre- de- vacuum tube are closed, opens quiet de- vacuum tube, after deaeration 16-24h, quiet de- vacuum tube is closed, opens compression
Air hose, it is forced into more than vacuum, closes compressed air hose, open out sebific duct, viscose glue is delivered to forming machine, treats that glue is discharged
After, sebific duct is closed out, opens blow-down pipe, after deaeration atmosphere in the tub is emptied, blow-down pipe is closed, that is, completes a cycle
Two one deaeration techniques of dipping.
2. two dipping as claimed in claim 1, one deaeration technique, it is characterised in that：Set on described glue inlet tube into glue valve.
3. two dipping as claimed in claim 1, one deaeration technique, it is characterised in that：Described glue inlet tube and pre- de- vacuum tube close
When closing, the glue liquid level in deaerator is not less than the 2/3 of deaerator height, more than liquid level is no more than the 1/3 of deaerator height.
4. two dipping as claimed in claim 1, one deaeration technique, it is characterised in that：The described port of export for going out sebific duct is divided into two
Branch, plastic emitting valve and surplus glue valve being connected respectively, goes out sebific duct and glue is discharged, glue when remaining glue valve to less than set amount is carried out
Discharge.
5. two dipping as claimed in claim 4, one deaeration technique, it is characterised in that：After described compressed air hose is closed, first
Open plastic emitting valve and carry out discharge opeing, when glue liquid level is less than setting value, close plastic emitting valve, surplus glue valve is opened, by remaining bucket bottom
Glue is emitted in middle bucket.
6. two one deaeration techniques of dipping as described in claim 4 or 5, it is characterised in that：When described plastic emitting valve is opened, glue
Liquid level is no more than the 1/3 of deaerator height.
7. two dipping as claimed in claim 1, one deaeration technique, it is characterised in that：Described pre- de- vacuum tube one end takes off with pre-
Vavuum pump is connected, and the other end is connected by pre- de- vacuum valve with surge pipe；Described quiet de- vacuum tube one end connects with quiet de- vavuum pump
Connect, the other end is connected by quiet de- vacuum valve with surge pipe.
8. two dipping as claimed in claim 1, one deaeration technique, it is characterised in that：Compression is set on described compression vacuum pipe
Vacuum valve.
9. two dipping as claimed in claim 1, one deaeration technique, it is characterised in that：Installation of relief valve on described blow-down pipe.
10. two dipping as claimed in claim 1, one deaeration technique, it is characterised in that：Before described glue inlet tube is opened, deaerator
In pressure P1For -0.092MPa, after compressed air hose is opened, by the pressure P in deaerator3Increase to 0.4-0.6MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710572950.5A CN107354517A (en) | 2017-07-14 | 2017-07-14 | Two one deaeration techniques of dipping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710572950.5A CN107354517A (en) | 2017-07-14 | 2017-07-14 | Two one deaeration techniques of dipping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107354517A true CN107354517A (en) | 2017-11-17 |
Family
ID=60292620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710572950.5A Pending CN107354517A (en) | 2017-07-14 | 2017-07-14 | Two one deaeration techniques of dipping |
Country Status (1)
| Country | Link |
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| CN (1) | CN107354517A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152583A (en) * | 2019-06-21 | 2019-08-23 | 中国恩菲工程技术有限公司 | Reduction kettle, control method, device and reducing leaching reaction system |
| CN110960890A (en) * | 2019-12-31 | 2020-04-07 | 深圳市轴心自控技术有限公司 | Vacuum defoaming system capable of adjusting vacuum degree and defoaming method |
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| CN201488896U (en) * | 2009-07-30 | 2010-05-26 | 中辉人造丝有限公司 | Defoaming device free of emptying sampling |
| CN102108561A (en) * | 2010-12-23 | 2011-06-29 | 天津膜天膜工程技术有限公司 | Embedded ultrasonic deaeration device and deaeration process |
| CN202595352U (en) * | 2012-05-12 | 2012-12-12 | 湖北金环股份有限公司 | Viscose vacuum defoamation device |
| CN202809016U (en) * | 2012-09-13 | 2013-03-20 | 湖北金环股份有限公司 | Viscose continuous defoaming device |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2867805A (en) * | 1953-07-25 | 1959-01-06 | Thuringisches Kunstfaserwerk W | Process for the elimination of the unconverted polymer-forming monomers from synthetic linear polyamides |
| CN201488896U (en) * | 2009-07-30 | 2010-05-26 | 中辉人造丝有限公司 | Defoaming device free of emptying sampling |
| CN102108561A (en) * | 2010-12-23 | 2011-06-29 | 天津膜天膜工程技术有限公司 | Embedded ultrasonic deaeration device and deaeration process |
| CN202595352U (en) * | 2012-05-12 | 2012-12-12 | 湖北金环股份有限公司 | Viscose vacuum defoamation device |
| CN202809016U (en) * | 2012-09-13 | 2013-03-20 | 湖北金环股份有限公司 | Viscose continuous defoaming device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152583A (en) * | 2019-06-21 | 2019-08-23 | 中国恩菲工程技术有限公司 | Reduction kettle, control method, device and reducing leaching reaction system |
| CN110152583B (en) * | 2019-06-21 | 2024-05-03 | 中国恩菲工程技术有限公司 | Reduction kettle, control method and device and reduction leaching reaction system |
| CN110960890A (en) * | 2019-12-31 | 2020-04-07 | 深圳市轴心自控技术有限公司 | Vacuum defoaming system capable of adjusting vacuum degree and defoaming method |
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