CN211635448U - Fiber NMMO solvent recovery filter equipment and Lyocell solvent recovery system - Google Patents
Fiber NMMO solvent recovery filter equipment and Lyocell solvent recovery system Download PDFInfo
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- CN211635448U CN211635448U CN201922377951.1U CN201922377951U CN211635448U CN 211635448 U CN211635448 U CN 211635448U CN 201922377951 U CN201922377951 U CN 201922377951U CN 211635448 U CN211635448 U CN 211635448U
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Abstract
The utility model discloses a Lyocell solvent recovery system and new solvent method cellulose fiber NMMO solvent recovery filter equipment thereof, new solvent method cellulose fiber NMMO solvent recovery filter equipment includes: the filter comprises a filter tank and a filter element arranged in the filter tank, wherein the filter tank is provided with a solvent inlet, a solvent outlet, a cleaning water inlet and a cleaning water outlet; the filter element separates the interior of the filter tank into two cavities, the cleaning water inlet and the solvent outlet are communicated with one of the two cavities, and the cleaning water outlet and the solvent inlet are communicated with the other cavity. When the filter element needs to be maintained and cleaned, the solvent inlet and the solvent outlet are only required to be closed, the cleaning water inlet is opened, cleaning water is injected into the filter tank, impurities such as sticky microorganisms are separated from the filter element under the cleaning water flushing effect, the impurities are discharged from the cleaning water outlet along with the cleaning water, the purpose of cleaning and maintaining the filter element can be achieved, the filter element is prevented from being disassembled, the labor intensity is greatly reduced, and the filter element is more convenient to maintain.
Description
Technical Field
The utility model relates to a fibre production technical field, more specifically say, relate to a Lyocell solvent recovery system and fibre NMMO solvent recovery filter equipment thereof.
Background
Lyocell fibre (Lyocell fibre) is known as green fibre in the 21 st century. In the production of Lyocell fibres, NMMO (N-methylmorpholine-N-oxide) is generally used as solvent. Specifically, NMMO solvent and cellulose are mixed and dissolved, and the mixture is spun into fibers through a spinneret plate. In this process, much of the used NMMO solvent is collected, filtered and reused.
NMMO is an organic solvent, and a part of cellulose and hemicellulose can be dissolved in the process of dissolving pulp, so that the sugar content in a system is increased, bacteria can be bred when the system is operated for a long time at a certain temperature, sticky microorganisms are generated, and the repeated use of the NMMO solvent is influenced. In the prior art, a filter is used for filtering sticky microorganisms in an NMMO solvent, but a filter element in the filter needs to be disassembled and then cleaned, so that the filter element is complex to maintain and high in labor intensity.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model discloses a first aim at provides a new solvent process cellulose fibre NMMO solvent recovery filter equipment, and this fibre NMMO solvent recovery filter equipment's structural design can reduce the abluent intensity of labour of filter core effectively so that the filter core is more convenient for maintain, the utility model discloses a second aim at provides a Lyocell solvent recovery system including above-mentioned fibre NMMO solvent recovery filter equipment.
In order to achieve the first object, the present invention provides the following technical solutions:
a fiber NMMO solvent recovery filtration device for filtering viscous impurities in an NMMO solvent, comprising:
the filter comprises a filter tank and a filter element arranged in the filter tank, wherein the filter tank is provided with a solvent inlet, a solvent outlet, a cleaning water inlet and a cleaning water outlet;
the filter element divides the interior of the filter tank into two cavities, the cleaning water inlet and the solvent outlet are both communicated with one cavity, the cleaning water outlet and the solvent inlet are both communicated with the other cavity, NMMO solvent is injected from the solvent inlet and flows out from the solvent outlet after passing through the filter element; the washing water flows in from the washing water inlet, passes through the filter element and flows out from the washing water outlet.
Preferably, the filter element is cylindrical and has an opening at one end, and the opening of the filter element is communicated with the solvent outlet and the washing water inlet.
Preferably, one end of the filter tank is provided with a bell mouth, the opening of the filter element is opposite to the flared end of the bell mouth, the opening of the filter element covers the flared end of the bell mouth, and the necking end of the bell mouth is communicated with the washing water inlet.
Preferably, the filter tank is further provided with a gas inlet and a gas outlet, and the filter element is located between the gas inlet and the gas outlet.
Preferably, the gas inlet and the gas outlet are respectively positioned at two ends of the filter tank.
Preferably, the wash water outlet is located at the bottom of the filter tank and the gas outlet is located at the top of the filter tank, the wash water outlet and the gas outlet being oppositely disposed.
Preferably, the bottom of the filtering tank is provided with an air wiping pipe, the pipe wall of the air wiping pipe is provided with a plurality of exhaust holes, and the air inlet end of the air wiping pipe is communicated with the air inlet.
Preferably, the filtering tank is further provided with an observation through hole, and the observation through hole is provided with a transparent sheet.
A Lyocell solvent recovery system including a fibre NMMO solvent recovery filter apparatus as claimed in any preceding claim.
When the fiber NMMO solvent recovery filtering device is applied, in the normal filtering process, the cleaning water inlet and the cleaning water outlet are closed, the solvent inlet and the solvent outlet are opened, and the NMMO solvent entering the filtering tank flows through the filter core and then is discharged from the solvent outlet, so that the filtration of sticky microorganisms is realized. When the filter element needs to be cleaned and maintained, the solvent inlet and the solvent outlet are closed, and the cleaning water inlet is opened. In the cleaning process, cleaning water enters the filter tank from the cleaning water inlet, and the cleaning water flows through the filter element in the filter tank so as to realize the flushing of the filter element, and the water after flushing the filter element is discharged from the cleaning water outlet f, thereby achieving the purpose of cleaning and maintaining the filter element.
By last, use the utility model provides a fibre NMMO solvent recovery filter equipment, when the filter core need be maintained and wash, only need close solvent import and solvent export, open and wash the water import, will wash the water injection and filter the jar, utilize and wash the water washing effect and make thick form microorganism break away from the filter core, thick form microorganism can reach the purpose of wasing the maintenance filter core along with wasing water export f discharge, has avoided the dismantlement of filter core, greatly reduced intensity of labour, make the filter core more convenient to maintain.
In order to achieve the second objective, the present invention further provides a Lyocell solvent recovery system, which comprises any one of the above mentioned fiber NMMO solvent recovery filtering devices. Since the above fiber NMMO solvent recovery filter device has the above technical effects, the Lyocell solvent recovery system having the fiber NMMO solvent recovery filter device should also have corresponding technical effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is the embodiment of the utility model provides a fibre NMMO solvent recovery filter equipment's that embodiment provides structure schematic diagram.
In fig. 1:
1-a filter tank, 2-a filter element, 3-an observation through hole, 4-an air wiping pipe and 5-a bell mouth;
the device comprises an a-gas outlet, a b-solvent inlet, a c-cleaning water inlet, a d-solvent outlet, an e-gas inlet and an f-cleaning water outlet.
Detailed Description
A first object of the utility model is to provide a fibre NMMO solvent recovery filter equipment, this fibre NMMO solvent recovery filter equipment's structural design can reduce the abluent intensity of labour of filter core effectively so that the filter core is more convenient for maintain, the utility model discloses a second object is to provide a Lyocell solvent recovery system including above-mentioned fibre NMMO solvent recovery filter equipment.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left" and "right" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the indicated position or element must have a specific orientation, be constituted in a specific orientation, and be operated, and thus, are not to be construed as limitations of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, the fiber NMMO solvent recovery and filtration apparatus provided by the present invention includes a filtration tank 1 and a filter element 2. Wherein, the filtering tank 1 is provided with a solvent inlet b, a solvent outlet d, a cleaning water inlet c and a cleaning water outlet f. The filter element 2 is arranged in the filter tank 1, the filter element 2 divides the interior of the filter tank 1 into two cavities, the cleaning water inlet c and the solvent outlet d are communicated with one of the two cavities, and the cleaning water outlet f and the solvent inlet b are communicated with the other cavity. So set up, NMMO solvent is poured into from solvent import b, behind filter core 2, flows out from solvent export d. The washing water flows in from the washing water inlet c, passes through the filter element 2, and flows out from the washing water f outlet.
When the fiber NMMO solvent recovery filtering device is applied, in the normal filtering process, the cleaning water inlet c and the cleaning water outlet f are closed, the solvent inlet b and the solvent outlet d are opened, and the NMMO solvent entering the filtering tank 1 flows through the filter element 2 and then is discharged from the solvent outlet d, so that the filtration of viscous impurities is realized. When the filter element 2 needs to be cleaned and maintained, the solvent inlet b and the solvent outlet d are closed, and the cleaning water inlet c is opened. In the cleaning process, cleaning water enters the filter tank 1 from the cleaning water inlet c, and the cleaning water flows through the filter element 2 in the filter tank 1 so as to realize the cleaning of the filter element 2, and the water after the filter element 2 is cleaned is discharged from the cleaning water outlet f, thereby achieving the purpose of cleaning and maintaining the filter element 2.
By last, use the utility model provides a fibre NMMO solvent recovery filter equipment, when filter core 2 need maintain the washing, only need close solvent import b and solvent export d, open and wash water import c, will wash water injection filtration jar 1, utilize and wash water washing effect and make thick form microorganism break away from filter core 2, thick form microorganism can reach the purpose of wasing maintenance filter core 2 along with wasing water export f discharge, the dismantlement of filter core 2 has been avoided to greatly reduced intensity of labour, it is more convenient for maintain to make filter core 2.
In a preferred embodiment, the filter element 2 may be cylindrical and open at one end, i.e. one end of the filter element 2 is open without an end wall and the other end is provided with an end wall. The opening of the filter element 2 is communicated with the solvent outlet d and the cleaning water inlet c. With such an arrangement, the filtering area of the filter element 2 is increased, and pressurized cleaning water is injected into the filter element 2 so as to flush the inner side of the filter element 2 first by utilizing the action of the pressurized cleaning water.
The filter element 2 may be cylindrical or square-cylindrical. Of course, the filter element 2 may have other shapes, such as a cylinder and a plate, which is not limited herein.
Further, the one end of crossing jar 1 can be provided with horn mouth 5, and the opening of filter core 2 sets up with the flaring end of horn mouth 5 is relative to the opening of filter core 2 covers in the flaring end of horn mouth 5, and the throat end and the washing water inlet c of horn mouth 5 communicate. The cleaning water can flow to the filter element 2 along the bell mouth 5 to wash the filter element comprehensively, thereby avoiding the local dead angle of the filter element and improving the back washing effect.
In another embodiment, the canister 1 is further provided with a gas inlet e and a gas outlet a, and the filter element 2 is located between the gas inlet e and the gas outlet a. When cleaning the filter element 2, compressed air enters the filter tank 1 from the gas inlet e and exits the filter tank 1 from the gas outlet a. The bubbles that compressed air produced flow in filtering jar 1 and filter core 2 friction and impact filter core 2, and the gas of flowing compressed air is wiped the effect and is made the little impurity of thick form break away from filter core 2, and then thick form impurity is discharged from wasing water outlet f along with wasing water, has improved abluent cleanliness factor.
The gas inlet e and the gas outlet a can be respectively positioned at two ends of the filter tank 1 so as to ensure that compressed air entering from one end of the filter tank 1 can be exhausted from the other end of the filter tank 1 after being subjected to gas wiping action with the filter element 2. The gas inlet e may be located on the end wall of the filter canister 1 and the gas outlet a on the side wall of the filter canister 1. Of course, the gas inlet e and the gas outlet a may be located at other positions, and are not limited herein.
In another embodiment, the washing water outlet f is located at the bottom of the filtration tank 1, the gas outlet a is located at the top of the filtration tank 1, and the washing water outlet f and the gas outlet a are oppositely arranged. So arranged, in the vertical direction, the gas outlet a is opposite to the cleaning water outlet f, and the compressed air can bring part of the sticky substance to the vicinity of the gas outlet a, so that when the supply of the compressed air is stopped, the part of the sticky substance can naturally fall to the cleaning water outlet f to be beneficial to discharge.
In order to enable all parts of the filter element 2 to be in contact friction with compressed air, the bottom in the filter tank 1 can be further provided with an air wiping pipe 4, the pipe wall of the air wiping pipe 4 is provided with a plurality of exhaust holes, and the air inlet end of the air wiping pipe 4 is communicated with an air inlet e. The compressed air entering the air wiping pipe 4 is uniformly discharged through a plurality of exhaust holes on the pipe wall. The length of the air wiping pipe 4 may be set parallel to the horizontal length of the filter tank 1.
The number of the air wiping pipes 4 is not limited, and a plurality of air wiping pipes 4 or one air wiping pipe 4 can be arranged according to actual needs.
In order to facilitate the real-time monitoring of the cleaning degree of the filter element 2, the tank wall of the filter tank 1 can be provided with an observation through hole 3, and the observation through hole 3 is provided with a transparent sheet. The transparent sheet may be a glass sheet or a plastic sheet. Thus, the filter element 2 can be observed in real time through the transparent sheet. It should be noted here that the transparent sheet is connected to the wall of the filter tank 1 in a sealing manner to prevent leakage of NMMO solvent.
Based on fibre NMMO solvent recovery filter equipment that provides in the above-mentioned embodiment, the utility model also provides a Lyocell solvent recovery system, this Lyocell solvent recovery system include arbitrary fibre NMMO solvent recovery filter equipment in the above-mentioned embodiment. For the beneficial effect of the Lyocell solvent recovery system, please refer to the above embodiment since the Lyocell solvent recovery system employs the fiber NMMO solvent recovery filtering device in the above embodiment.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. A fiber NMMO solvent recovery filter equipment for viscous impurity in filtering NMMO solvent, its characterized in that includes:
the device comprises a filter tank (1) and a filter element (2) arranged in the filter tank (1), wherein the filter tank (1) is provided with a solvent inlet, a solvent outlet, a cleaning water inlet and a cleaning water outlet;
the filter element (2) divides the interior of the filter tank (1) into two cavities, the cleaning water inlet and the solvent outlet are both communicated with one cavity, the cleaning water outlet and the solvent inlet are both communicated with the other cavity, NMMO solvent is injected from the solvent inlet, and flows out from the solvent outlet after passing through the filter element (2); the washing water flows in from the washing water inlet, passes through the filter element (2) and flows out from the washing water outlet.
2. The fiber NMMO solvent recovery filter apparatus in accordance with claim 1, wherein the filter element (2) is cylindrical, the wall of the cylinder is a filter layer, and one end of the filter element is open, the opening of the filter element (2) being in communication with the solvent outlet and the wash water inlet.
3. The fiber NMMO solvent recovery filtering device according to claim 2, wherein one end of the filtering tank (1) is provided with a bell mouth (5), the opening of the filter element (2) is opposite to the flared end of the bell mouth (5) and the opening of the filter element (2) covers the flared end of the bell mouth (5), and the flared end of the bell mouth (5) is communicated with the washing water inlet.
4. The fiber NMMO solvent recovery filter arrangement according to claim 1, characterized in that said filter canister (1) is further provided with a gas inlet and a gas outlet, said filter element (2) being located between said gas inlet and gas outlet.
5. The fiber NMMO solvent recovery filter apparatus according to claim 4, wherein the gas inlet and gas outlet are located at respective ends of the filter canister (1).
6. The fiber NMMO solvent recovery filter apparatus according to claim 5, wherein the wash water outlet is located at the bottom of the filter tank (1) and the gas outlet is located at the top of the filter tank (1), the wash water outlet and the gas outlet being oppositely disposed.
7. The fiber NMMO solvent recovery filter apparatus according to any one of claims 4-6, wherein the bottom inside the filter tank (1) is provided with an air wiping pipe (4), the pipe wall of the air wiping pipe (4) is provided with a plurality of air vents, and the air inlet end of the air wiping pipe (4) is communicated with the air inlet.
8. The fiber NMMO solvent recovery filter apparatus according to any one of claims 1-6, wherein the filter canister (1) is further provided with a sight through hole (3), and a transparent sheet is provided on the sight through hole (3).
9. A Lyocell solvent recovery system including a fibre NMMO solvent recovery filter apparatus according to any of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922377951.1U CN211635448U (en) | 2019-12-25 | 2019-12-25 | Fiber NMMO solvent recovery filter equipment and Lyocell solvent recovery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922377951.1U CN211635448U (en) | 2019-12-25 | 2019-12-25 | Fiber NMMO solvent recovery filter equipment and Lyocell solvent recovery system |
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| CN211635448U true CN211635448U (en) | 2020-10-09 |
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| CN201922377951.1U Active CN211635448U (en) | 2019-12-25 | 2019-12-25 | Fiber NMMO solvent recovery filter equipment and Lyocell solvent recovery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112973212A (en) * | 2021-02-22 | 2021-06-18 | 宜宾丝丽雅股份有限公司 | Method for cleaning filter element for viscose production |
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2019
- 2019-12-25 CN CN201922377951.1U patent/CN211635448U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112973212A (en) * | 2021-02-22 | 2021-06-18 | 宜宾丝丽雅股份有限公司 | Method for cleaning filter element for viscose production |
| CN112973212B (en) * | 2021-02-22 | 2022-08-05 | 宜宾丝丽雅股份有限公司 | Method for cleaning filter element for viscose production |
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