A continuous production equipment for cellulose ether

Abstract

The invention relates to the technical field of cellulose ether production, in particular to a continuous cellulose ether production device, comprising a pretreatment barrel, an alkalization kettle, an etherification kettle and a dewatering barrel; further comprising a sealing film 1, a sealing film 2, a liquid feeding pipeline, a crushing component and a salvaging mechanism, wherein the sealing film 1 divides an alkalization chamber of the alkalization kettle into an upper part and a lower part, the sealing film 1 is closely attached to the bottom wall of the alkalization chamber of the alkalization kettle under the action of atmospheric pressure, the sealing film 2 divides an etherification chamber of the etherification kettle into an upper part and a lower part, the sealing film 2 is closely attached to the bottom wall of the etherification chamber of the etherification kettle under the action of atmospheric pressure, the liquid feeding pipeline is respectively connected with the pretreatment barrel, the alkalization kettle, the lower port of the etherification kettle and the inlet of the dewatering barrel, the crushing component is installed in the treatment chamber of the pretreatment barrel, and the salvaging mechanism is installed in the dewatering chamber of the dewatering barrel; the sealing film isolates the atmosphere, does not need to be vacuumed or filled with nitrogen, reduces the waste of working hours, does not need to be configured with a vacuum pump system, has a simple structure and good practicality.

Description

Technical Field

[0001] The invention relates to the technical field of cellulose ether production, in particular to a continuous production device for cellulose ether. Background Art

[0002] Cellulose ether is a polymer compound with an ether structure made of cellulose. A variety of cellulose ether production equipment and methods have been proposed in the prior art, such as the production method of hydroxypropyl methylcellulose proposed in the Chinese invention patent with publication number CN107098982B. After the reaction is completed, the method first heats water and stirs at the same time, and then separates the solvent and the reactant through precipitation, and then discharges most of the liquid solvent through a pipe located at the waist of the desolventizing kettle, and the remaining small part of the solvent is recovered through a conventional distillation route; compared with the direct distillation scheme of the prior art, the energy consumption is significantly reduced. Another example is a system for continuously producing carboxymethyl cellulose nitrate proposed in the Chinese utility model patent with publication number CN208869531U, in which the raw materials of the system are crushed by a first crusher and then enter the cyclone separator for treatment, then enter the metering hopper for metering, and then enter the alkalization kettle for treatment, and then enter the first centrifuge through the intermediate washing kettle for the first centrifugation, and enter the second centrifuge after the first centrifugation. After the treatment, it is processed by a vibrating fluidized bed, a hopper and a second crusher, and then enters the packaging machine.

[0003] In actual production, cellulose ether usually undergoes process steps such as pretreatment, alkalization, etherification, neutralization washing, drying and packaging. In the alkalization and etherification process steps, the oxygen content in the alkalization kettle and the etherification kettle needs to be controlled to reduce the oxidation of the raw materials. For example, in the prior art, a vacuum pump is usually used to evacuate the alkalization kettle to 0.006MPa, and nitrogen is filled for replacement three times, and then the alkalization reaction is carried out. After the alkalization is completed, the reactor is evacuated to 0.05-0.07MPa, and then the etherification reaction is carried out. However, the above vacuuming method consumes a long time for evacuation and nitrogen filling, and a vacuum pump system needs to be configured, which has a complex structure, and therefore needs to be improved. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a continuous production equipment for cellulose ether, which isolates the atmosphere through a sealing membrane, does not require vacuuming and nitrogen filling, reduces labor waste, does not require an additional vacuum pump system, has a simple structure, and is highly practical.

[0005] To achieve the above-mentioned purpose, the present invention provides a continuous production equipment of cellulose ether, comprising a pretreatment barrel, an alkalization kettle, an etherification kettle and a dehydration barrel, wherein a treatment chamber is arranged inside the pretreatment barrel, an alkalization chamber is arranged inside the alkalization kettle, an etherification chamber is arranged inside the etherification kettle, and a dehydration chamber is arranged inside the dehydration barrel; the equipment also comprises a sealing film 1, a sealing film 2, a liquid delivery pipeline, a crushing assembly and a salvaging mechanism, wherein the sealing film 1 is arranged in the middle of the alkalization chamber of the alkalization kettle, and the sealing film 1 divides the alkalization chamber of the alkalization kettle into an upper part and a lower part. The lower part of the alkalization chamber of the alkalization kettle is in a vacuum state, so that the sealing film 1 is tightly attached to the bottom wall of the alkalization chamber of the alkalization kettle under the action of atmospheric pressure. The sealing film 2 is arranged in the middle of the etherification chamber of the etherification kettle. The sealing film 2 divides the etherification chamber of the etherification kettle into an upper part and a lower part. The lower part of the etherification chamber of the etherification kettle is in a vacuum state, so that the sealing film 2 is tightly attached to the bottom wall of the etherification chamber of the etherification kettle under the action of atmospheric pressure. The liquid delivery pipeline is respectively connected to the pretreatment barrel, the alkalization kettle, the lower port of the etherification kettle and the inlet of the dehydration barrel. The crushing component is installed in the processing chamber of the pretreatment barrel, and the salvaging mechanism is installed in the dehydration chamber of the dehydration barrel; when working, the cellulose raw material is put into the processing chamber of the pretreatment barrel, the crushing component crushes the cellulose raw material, and the solvent is added to the crushed cellulose raw material to form a solution one, and the solution one is input into the lower part of the alkalization chamber of the alkalization kettle through the liquid feeding pipeline and the lower port of the alkalization kettle to prop up the sealing film one, so that the sealing film one isolates the solution one from the atmosphere, and the alkali solution is input into the lower part of the alkalization chamber of the alkalization kettle through the liquid feeding pipeline. Solution 1 is mixed evenly to form solution 2, solution 2 is input into the lower part of the etherification chamber of the etherification kettle through a liquid delivery pipeline and a lower port of the etherification kettle to prop up a sealing film 2, so that the sealing film 2 isolates solution 2 from the atmosphere, an etherifying agent is input into the lower part of the etherification chamber of the etherification kettle through a liquid delivery pipeline and mixed evenly with solution 2 to form solution 3, solution 3 is input into the dehydration barrel through a liquid delivery pipeline and an inlet of the dehydration barrel, a salvaging mechanism gathers cellulose ether in solution 3 and salvages it, and the salvaged cellulose ether is scattered and packaged after being dried.

[0006] Preferably, it also includes an interlayer 1, a water inlet pipe and a water outlet pipe. The interlayer 1 is arranged in the side wall of the pretreatment barrel, the water inlet pipe is connected to the interlayer 1, and the water outlet pipe is arranged on the inner wall of the pretreatment barrel, and the water outlet pipe is connected to the interlayer 1. When the cellulose raw material is crushed, hot water is input into the interlayer 1 through the water inlet pipe to heat the pretreatment barrel and the cellulose raw material. After the cellulose is crushed, hot water continues to be input through the water inlet pipe, so that the hot water in the interlayer 1 is input into the processing chamber of the pretreatment barrel through the water outlet pipe to mix the cellulose raw material into solution 1.

[0007] Preferably, the crushing assembly includes a crossbeam, a push cylinder, a motor, a drive shaft, a plurality of cutter wheels and a piston. The crossbeam is installed on one end of the push cylinder, and the other end of the push cylinder is installed on the pretreatment barrel. The motor is installed on the crossbeam, and the output shaft of the motor is connected in transmission. The drive shaft is rotatably installed on the crossbeam. A plurality of cutter wheels are rotatably arranged on the lower side wall of the drive shaft, and a plurality of blades are circumferentially arranged on the plurality of cutter wheels, and the cutting edges of the plurality of blades are in contact with the bottom wall and the inner wall of the pretreatment barrel. A piston is arranged at the lower end of the drive shaft, and the piston closes the lower port of the pretreatment barrel; the motor drives the drive shaft and the plurality of cutter wheels to rotate, and the plurality of blades of the plurality of cutter wheels cut and crush the cellulose raw material at the bottom of the processing chamber of the pretreatment barrel. After the cellulose raw material is cut and crushed and hot water is input, the plurality of cutter wheels continue to rotate to mix the hot water and the cellulose raw material evenly to form a solution. The push cylinder is extended to push and raise the crossbeam and the motor, so that the drive shaft takes the piston out of the lower port of the pretreatment barrel, so that the solution is discharged through the lower port of the pretreatment barrel and the liquid delivery pipeline.

[0008] Preferably, it also includes a push cylinder 2 and a push plate 1, the fixed end of the push cylinder 2 is installed on the upper part of the alkalization kettle, and the push plate 1 is arranged at the lower end of the piston rod of the push cylinder 2, and the push plate 1 is connected to the middle upper part of the sealing membrane 1; when the solution 1 is input into the lower part of the alkalization chamber of the alkalization kettle, the piston rod of the push cylinder 2 is in a free state, and when the sealing membrane 1 is propped up, the piston rod of the push cylinder 2 reciprocates and extends, so that the push plate 1 pushes the middle part of the sealing membrane 1 to rise and fall, thereby causing the sealing membrane 1 to knead the solution below it to mix the solution evenly.

[0009] Preferably, it also includes a push cylinder three and a push plate two, the fixed end of the push cylinder three is installed on the upper part of the etherification kettle, the lower end of the piston rod of the push cylinder three is provided with a push cylinder three, and the push cylinder three is connected to the middle upper part of the sealing membrane two; when the solution two is input into the lower part of the etherification chamber of the etherification kettle, the piston rod of the push cylinder three is in a free state, and when the sealing membrane two is propped up, the piston rod of the push cylinder three reciprocates and extends, so that the push plate two pushes the middle part of the sealing membrane two to rise and fall, so that the sealing membrane two kneads the solution below it to make the solution mixed evenly.

[0010] Preferably, it also includes interlayer 2, an air inlet pipe, a plugging cap and a pressure limiting valve. Interlayer 2 is arranged in the side wall of the etherification kettle, the air inlet pipe is installed on the etherification kettle, the air inlet pipe is connected with interlayer 2, a plurality of vents are arranged at the bottom of the etherification chamber of the etherification kettle, the plurality of vents are connected with interlayer 2, a plurality of plugging caps are respectively installed in the plurality of vents through spring elastic sealing, a plurality of air outlets are arranged at the lower part of the side wall of the plurality of plugging caps, and a pressure limiting valve is arranged on the sealing membrane 2; an externally connected steam pipe is input into interlayer 2 through the air inlet pipe, thereby The solution three in the etherification chamber of the etherification kettle is heated, and the steam pressure in the interlayer two pushes the multiple plugging caps into the etherification chamber of the pretreatment barrel, so that the air outlet holes of the multiple plugging caps connect the interlayer two and the etherification chamber of the pretreatment barrel, so that the steam in the interlayer two is input into the lower part of the etherification chamber of the etherification kettle through the air outlet holes, and the solution three is steam-heated and impacted. When the pressure at the lower part of the sealing membrane two reaches the set value, the steam is discharged to the upper part of the etherification chamber of the etherification kettle through the pressure limiting valve, thereby improving the etherification efficiency.

[0011] Preferably, it further comprises interlayer three, a steam pipe and air outlet holes. Interlayer three is arranged in the side wall of the dehydration barrel, one end of the steam pipe is connected with the upper part of the etherification chamber of the etherification kettle, and the other end of the steam pipe is connected with interlayer three. A plurality of air outlet holes are arranged on the inner wall of the dehydration barrel, and the plurality of air outlet holes are connected with interlayer three. The steam in the upper part of the etherification chamber of the etherification kettle is input into interlayer three through the steam pipe, and is input into the dehydration chamber of the dehydration barrel through the plurality of air outlet holes, so as to heat the cellulose ether in the salvaged mechanism and improve the drying speed of the cellulose ether.

[0012] Preferably, the liquid delivery pipeline includes a connecting pipe 1, a four-way valve 1, an alkali liquid pipe, a connecting pipe 2, a four-way valve 2, an etherifying agent pipe and a connecting pipe 3, one end of the connecting pipe 1 is connected to the lower port of the pretreatment barrel, the other end of the connecting pipe 1 is connected to the first channel of the four-way valve 1, the second channel of the four-way valve 1 is connected to the lower port of the alkalization kettle, the alkali liquid pipe is connected to the third channel of the four-way valve 1, one end of the connecting pipe 2 is connected to the fourth channel of the four-way valve 1, the other end of the connecting pipe 2 is connected to the first channel of the connecting pipe 2, the second channel of the four-way valve 2 is connected to the lower port of the etherifying kettle, the etherifying agent pipe is connected to the third channel of the four-way valve 2, and one end of the connecting pipe 3 is connected to the etherifying agent pipe. The fourth channel of the etherifying agent pipe is connected, and the other end of the connecting pipe three is connected to the middle of the dehydration chamber of the dehydration barrel; the solution one in the treatment chamber of the pretreatment barrel is input into the alkalization chamber of the alkalization kettle through the connecting pipe one and the four-way valve one; the alkali solution is input into the alkalization chamber of the alkalization kettle through the alkali solution pipe and the four-way valve one, and the solution two in the alkalization kettle is input into the etherification chamber of the etherification kettle through the four-way valve one, the connecting pipe two and the four-way valve two; the etherifying agent is input into the etherification chamber of the etherification kettle through the etherifying agent pipe and the four-way valve two; the solution three in the etherification chamber of the etherification kettle is input into the dehydration chamber of the dehydration barrel through the four-way valve two and the connecting pipe three, so as to realize the continuous transportation of the solution.

[0013] Preferably, the salvage mechanism includes a lower filter plate, a plurality of vertical rods, an upper filter plate, a card plate, a push cylinder four, a rotating shaft, a motor two and a lifting assembly, the lower filter plate is slidably mounted on the lower part of the dehydration chamber of the dehydration barrel, a plurality of vertical rods are vertically arranged on the lower filter plate, a plurality of slot openings are arranged on the plurality of vertical rods, the upper filter plate is slidably mounted on the upper part of the dehydration chamber of the dehydration barrel, avoidance holes matching the plurality of vertical rods are arranged on the upper filter plate, the card plate is slidably mounted on the upper filter plate, the card plate is matched and aligned with the slot openings of the plurality of vertical rods, the push cylinder four is mounted on the upper filter plate, the piston rod of the push cylinder four is connected to the card plate, the lower end of the rotating shaft is connected to the middle part of the upper filter plate, the motor two is mounted on the lifting assembly, and the output shaft of the motor two is transmission-connected to the rotating shaft; the solution three is input into the dehydration chamber of the dehydration barrel through the connecting pipe three When the filter presses on the upper filter plate, the filter presses on the lower filter plate and the filter presses on the lower filter plate. When the filter presses on the lower filter plate, the filter presses on the lower filter plate and the filter presses on the lower filter plate. When the filter presses on the lower filter plate, the filter presses on the lower filter plate and the filter presses on the filter press. When the filter presses on the lower filter plate, the filter presses on the lower filter plate and the filter presses on the filter press. When the filter presses on the lower filter plate, the filter presses on the lower filter plate and the filter presses on the filter press.

[0014] Preferably, the lifting assembly includes motor 2, a turntable and a cross frame, the turntable is installed on the piston rod of motor 2, the cross frame is installed on the rotating end of the turntable, and motor 2 is installed on the cross frame; the piston rod of push cylinder 5 is extended to push and lift the turntable and the cross frame, so that the cross frame lifts motor 2, and the cross frame is rotated by the turntable to move the cage-type structure composed of the lower filter plate, multiple vertical rods and upper filter plate out of the dewatering barrel, and the piston rod of push cylinder 4 is contracted to disengage the clamping plate from the multiple vertical rods, so that the lower filter plate is disengaged from the upper filter plate, thereby releasing the cellulose ether, which is convenient for subsequent drying in a dryer and then loosening and packaging.

[0015] Compared with the prior art, the invention has the following beneficial effects: the pulverizing component pulverizes the cellulose raw material, which is convenient for subsequent treatment of the cellulose raw material by adding a solvent to form solution one; the sealing membrane one in the alkalization kettle isolates solution one from the atmosphere and mixes it evenly with the alkali solution to form solution two; the sealing membrane two in the etherification kettle isolates solution two from the atmosphere and mixes it evenly with the etherifying agent to form solution three; the salvaging mechanism in the dehydration barrel gathers the cellulose ether in solution three and salvages it out; the salvaged cellulose ether is dried and then dispersed and packaged; compared with the prior art, it does not require vacuuming and nitrogen filling, which reduces the waste of working hours, does not require the configuration of a vacuum pump system, has a simple structure, and is good in practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front cross-sectional structural schematic diagram of the present invention;

[0017] Figure 2 is an axonometric partial cross-sectional schematic diagram of the present invention;

[0018] Figure 3 It is a schematic diagram of the axonometric structure of the present invention;

[0019] Figure 4 is a partial cross-sectional schematic diagram of a pretreatment barrel;

[0020] Figure 5 It is a partial cross-sectional structural schematic diagram of the alkalization kettle;

[0021] Figure 6 It is a partial cross-sectional structural schematic diagram of the etherification kettle;

[0022] Figure 7 yes Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0023] Figure 8 It is an axonometric diagram of a dewatering barrel;

[0024] Fig. 9 It is a structural schematic diagram of the lower filter plate, vertical rod, upper filter plate and clamping plate.

[0025] Markings in the attached figure: 1, pretreatment barrel; 2, alkalization kettle; 3, etherification kettle; 4, dehydration barrel; 5, sealing film 1; 6, sealing film 2; 7, liquid delivery pipeline; 8, interlayer 1; 9, water inlet pipe; 10, water outlet pipe; 11, crossbeam; 12, push cylinder 1; 13, motor 1; 14, drive shaft; 15, knife wheel; 16, piston; 17, push cylinder 2; 18, push plate 1; 19, push cylinder 3; 20, push plate 2; 21, interlayer 2; 22, air inlet pipe; 2 3. Plug cap; 24. Pressure limiting valve; 25. Interlayer three; 26. Steam pipe; 27. Air outlet; 28. Connecting pipe one; 29. ​​Four-way valve one; 30. Alkali liquid pipe; 31. Connecting pipe two; 32. Four-way valve two; 33. Etherifying agent pipe; 34. Connecting pipe three; 35. Lower filter plate; 36. Vertical rod; 37. Upper filter plate; 38. Clamp plate; 39. Push cylinder four; 40. Rotating shaft; 41. Motor two; 42. Push cylinder five; 43. Turntable; 44. Horizontal frame. DETAILED DESCRIPTION

[0026] In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0027] Embodiment 1:

[0028] like Figure 1 , Figure 2, Figure 3 and Figure 5 As shown, a continuous production equipment of cellulose ether includes a pretreatment barrel 1, an alkalization kettle 2, an etherification kettle 3 and a dehydration barrel 4, wherein the pretreatment barrel 1 is provided with a treatment chamber, the alkalization kettle 2 is provided with an alkalization chamber, the etherification kettle 3 is provided with an etherification chamber, and the dehydration barrel 4 is provided with a dehydration chamber; it also includes a sealing film 1 5, a sealing film 2 6, a liquid feeding pipeline 7, a crushing component and a salvaging mechanism, wherein the sealing film 1 5 is provided in the middle of the alkalization chamber of the alkalization kettle 2, and the sealing film 1 5 divides the alkalization chamber of the alkalization kettle 2 into an upper part and a lower part, and the lower part of the alkalization chamber of the alkalization kettle 2 is a vacuum chamber. state, so that the sealing film 1 5 is tightly attached to the bottom wall of the alkalization chamber of the alkalization kettle 2 under the action of atmospheric pressure, the sealing film 2 6 is arranged in the middle of the etherification chamber of the etherification kettle 3, the sealing film 2 6 divides the etherification chamber of the etherification kettle 3 into an upper part and a lower part, and the lower part of the etherification chamber of the etherification kettle 3 is in a vacuum state, so that the sealing film 2 6 is tightly attached to the bottom wall of the etherification chamber of the etherification kettle 3 under the action of atmospheric pressure, the liquid delivery pipeline 7 is respectively connected to the pretreatment barrel 1, the alkalization kettle 2, the lower port of the etherification kettle 3 and the inlet of the dehydration barrel 4, the crushing assembly is installed in the processing chamber of the pretreatment barrel 1, and the salvage The mechanism is installed in the dehydration chamber of the dehydration barrel 4; it also includes a push cylinder 17 and a push plate 18, the fixed end of the push cylinder 17 is installed on the upper part of the alkalization kettle 2, and the lower end of the piston rod of the push cylinder 17 is provided with a push plate 18, and the push plate 18 is connected to the middle upper part of the sealing membrane 5; the liquid delivery pipeline 7 includes a connecting pipe 28, a four-way valve 29, an alkali liquid pipe 30, a connecting pipe 21, a four-way valve 22, an etherifying agent pipe 33 and a connecting pipe 34, one end of the connecting pipe 28 is connected to the lower port of the pretreatment barrel 1, and the other end of the connecting pipe 28 is connected to the first channel of the four-way valve 29 The second channel of the four-way valve 29 is connected to the lower port of the alkalization kettle 2, the alkali liquid pipe 30 is connected to the third channel of the four-way valve 29, one end of the connecting pipe 2 31 is connected to the fourth channel of the four-way valve 29, the other end of the connecting pipe 2 31 is connected to the first channel of the connecting pipe 2 31, the second channel of the four-way valve 2 32 is connected to the lower port of the etherification kettle 3, the etherifying agent pipe 33 is connected to the third channel of the four-way valve 2 32, one end of the connecting pipe 3 34 is connected to the fourth channel of the etherifying agent pipe 33, and the other end of the connecting pipe 3 34 is connected to the middle of the dehydration chamber of the dehydration bucket 4.

[0029] During operation, the cellulose raw material is put into the processing chamber of the pretreatment barrel 1, and the crushing component crushes the cellulose raw material. After the cellulose raw material is crushed, the solvent is added to form solution 1. The solution 1 in the processing chamber of the pretreatment barrel 1 is input into the lower part of the alkalization chamber of the alkalization kettle 2 through the connecting pipe 128 and the four-way valve 129 to prop up the sealing film 15, so that the sealing film 15 isolates the solution 1 from the atmosphere. The alkali solution toluene and isopropanol mixture, water and sodium hydroxide are input into the lower part of the alkalization chamber of the alkalization kettle 2 through the alkali solution pipe 30 and the four-way valve 129 to mix evenly with the solution 1 to form solution 2. When the solution 1 is input into the lower part of the alkalization chamber of the alkalization kettle 2, the piston rod of the push cylinder 17 is in a free state. When the sealing film 5 is propped up, the piston rod of the push cylinder 17 reciprocates and retracts, so that the push plate 18 pushes the middle of the sealing film 5 to rise and fall, thereby making the sealing film 5 below it The solution is kneaded to make the solution mixed evenly, the solution 2 in the alkalization kettle 2 is input into the lower part of the etherification chamber of the etherification kettle 3 through the four-way valve 1 29, the connecting pipe 2 31 and the four-way valve 2 32 to prop up the sealing film 2 6, so that the sealing film 2 6 isolates the solution 2 from the atmosphere, and the etherifying agents ethylene oxide and methyl chloride are input into the lower part of the etherification chamber of the etherification kettle 3 through the etherifying agent pipe 33 and the four-way valve 2 32 to mix evenly with the solution 2 to form a solution 3, and the solution 3 in the etherification chamber of the etherification kettle 3 is input into the dehydration chamber of the dehydration barrel 4 through the four-way valve 2 32 and the connecting pipe 3 34, and the salvaging mechanism gathers the cellulose ether in the solution 3 and salvages it out, and the salvaged cellulose ether is scattered and packaged after drying, so as to realize the continuous transportation of the solution. Compared with the prior art, it does not need to evacuate and fill with nitrogen, reduces the waste of working hours, does not need to configure a vacuum pump system, has a simple structure and good practicality.

[0030] Embodiment 2:

[0031] like Figure 4 As shown, on the basis of Example 1, it also includes an interlayer 8, a water inlet pipe 9 and a water outlet pipe 10. The interlayer 8 is arranged in the side wall of the pretreatment barrel 1, and the water inlet pipe 9 is connected to the interlayer 8. The water outlet pipe 10 is arranged on the inner wall of the pretreatment barrel 1, and the water outlet pipe 10 is connected to the interlayer 8; the crushing assembly includes a crossbeam 11, a push cylinder 12, a motor 13, a drive shaft 14, a plurality of cutter wheels 15 and a piston 16. The crossbeam 11 is installed on one end of the push cylinder 12, and the other end of the push cylinder 12 is installed on the pretreatment barrel 1. The motor 13 is installed on the crossbeam 11, and the output shaft of the motor 13 is connected by transmission. The drive shaft 14 is rotatably installed on the crossbeam 11. A plurality of cutter wheels 15 are rotatably arranged on the lower side wall of the drive shaft 14, and a plurality of blades are circumferentially arranged on the plurality of cutter wheels 15, and the cutting edges of the plurality of blades are in contact with the bottom wall and the inner wall of the pretreatment barrel 1. The lower end of the drive shaft 14 is provided with a piston 16, and the piston 16 closes the lower port of the pretreatment barrel 1.

[0032] When crushing the cellulose raw material, hot water is input into the interlayer 8 through the water inlet pipe 9 to heat the pretreatment barrel 1 and the cellulose raw material, and the motor 13 drives the driving shaft 14 and multiple cutter wheels 15 to rotate, and the multiple blades of the multiple cutter wheels 15 cut and crush the cellulose raw material at the bottom of the processing chamber of the pretreatment barrel 1. After the cellulose is crushed, hot water continues to be input through the water inlet pipe 9, so that the hot water in the interlayer 8 is input into the processing chamber of the pretreatment barrel 1 through the water outlet pipe 10 to mix the cellulose raw material, and the multiple cutter wheels 15 continue to rotate to mix the hot water and the cellulose raw material evenly to form a solution 1, and the push cylinder 12 extends to push the beam 11 and the motor 13 to rise, so that the driving shaft 14 takes the piston 16 out of the lower port of the pretreatment barrel 1, so that the solution 1 is discharged through the lower port of the pretreatment barrel 1 and the liquid delivery pipeline 7.

[0033] Embodiment 3:

[0034] like Figure 6 and Figure 7 As shown, on the basis of Example 2, it also includes a push cylinder three 19 and a push plate two 20, the fixed end of the push cylinder three 19 is installed on the upper part of the etherification kettle 3, the lower end of the piston rod of the push cylinder three 19 is provided with a push cylinder three 19, and the push cylinder three 19 is connected to the middle upper part of the sealing membrane two 6; it also includes an interlayer two 21, an air inlet pipe 22, a plugging cap 23 and a pressure limiting valve 24, the interlayer two 21 is provided in the side wall of the etherification kettle 3, the air inlet pipe 22 is installed on the etherification kettle 3, the air inlet pipe 22 is connected with the interlayer two 21, a plurality of vents are provided at the bottom of the etherification chamber of the etherification kettle 3, the plurality of vents are connected with the interlayer two 21, a plurality of plugging caps 23 are respectively installed in the plurality of vents through spring elastic sealing, a plurality of air outlet holes are provided at the lower part of the side wall of the plurality of plugging caps 23, and a pressure limiting valve 24 is provided on the sealing membrane two 6.

[0035] When the solution 2 is input to the lower part of the etherification chamber of the etherification kettle 3, the piston rod of the push cylinder 3 19 is in a free state. When the sealing film 2 6 is propped up, the piston rod of the push cylinder 3 19 reciprocates and retracts, so that the push plate 20 pushes the middle of the sealing film 2 6 to rise and fall, so that the sealing film 2 6 kneads the solution below it to make the solution mixed evenly. The external steam pipe is input into the interlayer 2 21 through the air inlet pipe 22, so that the solution 3 in the etherification chamber of the etherification kettle 3 is heated, and the interlayer 2 21 The steam pressure pushes the multiple plugging caps 23 into the etherification chamber of the pretreatment barrel 1, so that the air outlet holes of the multiple plugging caps 23 connect the interlayer 21 and the etherification chamber of the pretreatment barrel 1, so that the steam in the interlayer 21 is input into the lower part of the etherification chamber of the etherification kettle 3 through the air outlet holes, and the solution 3 is steam-heated and impacted. When the pressure at the lower part of the sealing membrane 26 reaches the set value, the steam is discharged to the upper part of the etherification chamber of the etherification kettle 3 through the pressure limiting valve 24, thereby improving the etherification efficiency.

[0036] Embodiment 4:

[0037] like Figure 8 and Fig. 9 As shown, on the basis of Example 3, it also includes an interlayer three 25, a steam pipe 26 and an air outlet 27. The interlayer three 25 is arranged in the side wall of the dehydration barrel 4, one end of the steam pipe 26 is communicated with the upper part of the etherification chamber of the etherification kettle 3, and the other end of the steam pipe 26 is communicated with the interlayer three 25. A plurality of air outlets 27 are arranged on the inner wall of the dehydration barrel 4, and the plurality of air outlets 27 are communicated with the interlayer three 25; the salvage mechanism includes a lower filter plate 35, a plurality of vertical rods 36, an upper filter plate 37, a clamping plate 38, a fourth push cylinder 39, a rotating shaft 40, a second motor 41 and a lifting assembly. The lower filter plate 35 is slidably installed in the lower part of the dehydration chamber of the dehydration barrel 4, a plurality of vertical rods 36 are vertically arranged on the lower filter plate 35, and a plurality of vertical rods 36 are each provided with a plurality of slot openings. The filter plate 37 is slidably installed on the upper part of the dehydration chamber of the dehydration barrel 4, and the upper filter plate 37 is provided with avoidance holes matching the multiple vertical rods 36. The clamping plate 38 is slidably installed on the upper filter plate 37, and the clamping plate 38 is matched and aligned with the slot openings of the multiple vertical rods 36. The push cylinder four 39 is installed on the upper filter plate 37, and the piston rod of the push cylinder four 39 is connected to the clamping plate 38. The lower end of the rotating shaft 40 is connected to the middle part of the upper filter plate 37. The motor two 41 is installed on the lifting assembly, and the output shaft of the motor two 41 is transmission-connected with the rotating shaft 40; the lifting assembly includes the motor two 41, the turntable 43 and the cross frame 44, the turntable 43 is installed on the piston rod of the motor two 41, the cross frame 44 is installed on the rotating end of the turntable 43, and the motor two 41 is installed on the cross frame 44.

[0038] When solution three is input into the dehydration chamber of the dehydration barrel 4 through the connecting pipe three 34, the lower filter plate 35 and the upper filter plate 37 are respectively located below and above the connecting pipe three 34. After solution three is input into the dehydration chamber of the dehydration barrel 4, the push cylinder five 42 contracts to lower the motor two 41, so that the upper filter plate 37 is lowered. When the multiple vertical rods 36 pass through the multiple avoidance holes of the upper filter plate 37, the piston rod of the push cylinder four 39 extends to push the clamping plate 38 to clamp the slots of the multiple vertical rods 36, so that the lower filter plate 35 and the upper filter plate 37 form a cage-type structure, which collects and compresses the cellulose ether, and the solution is discharged through the discharge pipe at the bottom of the dehydration barrel 4. The push cylinder five 42 extends to lift the motor two 41 to the middle of the dehydration chamber of the dehydration barrel 4, and the motor two 41 drives the rotating shaft 40 to rotate, and the rotating shaft 40 drives the upper filter plate 37, the multiple vertical rods 36 and the lower filter plate 35 to form The cage structure rotates to centrifugally throw out the residual solution in the cellulose ether to reduce the water content. The steam at the upper part of the etherification chamber of the etherification kettle 3 is input into the interlayer three 25 through the steam pipe 26, and is input into the dehydration chamber of the dehydration barrel 4 through the multiple air outlets 27 to heat the cellulose ether in the salvaged mechanism to improve the drying speed and dehydration effect of the cellulose ether. The piston rod of the push cylinder five 42 is extended to lift the turntable 43 and the cross frame 44, so that the cross frame 44 raises the motor two 41, and the cross frame 44 is rotated by the turntable 43 to move the cage structure composed of the lower filter plate 35, the multiple vertical rods 36 and the upper filter plate 37 out of the dehydration barrel 4. The piston rod of the push cylinder four 39 is contracted to disengage the card plate 38 from the multiple vertical rods 36, so that the lower filter plate 35 is disengaged from the upper filter plate 37, thereby releasing the cellulose ether, which is convenient for subsequent drying by the dryer and then scattered and packaged.

[0039] like Figures 1 to 9As shown, a cellulose ether continuous production equipment of the present invention, when working, firstly, cellulose raw material is put into the processing chamber of the pretreatment barrel 1, multiple knife wheels 15 rotate to make multiple blades to crush the cellulose raw material, after the cellulose raw material is crushed, solvent is added to form solution 1, solution 1 is input into the lower part of the alkalization chamber of the alkalization kettle 2 through a connecting pipe 1 28, a four-way valve 1 29 and the lower port of the alkalization kettle 2 to prop up a sealing film 1 5 so that the sealing film 1 5 isolates solution 1 from the atmosphere, alkali solution toluene and isopropanol mixture, water and sodium hydroxide are input into the lower part of the alkalization chamber of the alkalization kettle 2 through an alkali solution pipe 30 and a four-way valve 1 29 to be evenly mixed with solution 1 to form solution 2, and a cylinder 2 is pushed. The piston rod of the push cylinder 17 reciprocates and retracts, so that the push plate 18 pushes the middle of the sealing film 5 to rise and fall, so that the sealing film 5 kneads the solution below it to make the solution mixed evenly, and then the solution 2 is input into the lower part of the etherification chamber of the etherification kettle 3 through the four-way valve 29, the alkali liquid pipe 30 and the lower port of the etherification kettle 3 to prop up the sealing film 2 6, so that the sealing film 2 6 isolates the solution 2 from the atmosphere, and the etherifying agents ethylene oxide and methyl chloride are input into the lower part of the etherification chamber of the etherification kettle 3 through the etherifying agent pipe 33 and the four-way valve 2 32 to mix evenly with the solution 2 to form the solution 3, and the piston rod of the push cylinder 3 19 reciprocates and retracts, so that the push plate 2 20 pushes the middle of the sealing film 2 6 to rise and fall, so that the sealing film 2 6 kneads the solution below it to mix the solution evenly, and then the solution three is input into the dehydration barrel 4 through the four-way valve two 32, the connecting pipe three 34 and the inlet of the dehydration barrel 4, and the push cylinder five 42 contracts to make the motor two 41 descend, so that the upper filter plate 37 descends, and when the multiple vertical rods 36 pass through the multiple avoidance holes of the upper filter plate 37, the piston rod of the push cylinder four 39 extends to push the card plate 38 to clamp the slots of the multiple vertical rods 36, so that the lower filter plate 35 and the upper filter plate 37 form a cage structure, which collects and compresses the cellulose ether, and the solution is discharged through the discharge pipe at the bottom of the dehydration barrel 4, and finally the push cylinder five 42 extends to lift the motor two 41 to the middle of the dehydration chamber of the dehydration barrel 4, The motor 2 41 drives the rotating shaft 40 to rotate, and the rotating shaft 40 drives the cage structure composed of the upper filter plate 37, multiple vertical rods 36 and the lower filter plate 35 to rotate, and the residual solution in the cellulose ether is centrifugally thrown out, and the piston rod of the push cylinder 5 42 is extended to push and raise the turntable 43 and the cross frame 44, so that the cross frame 44 raises the motor 2 41, and the cross frame 44 is rotated by the turntable 43 to move the cage structure composed of the lower filter plate 35, multiple vertical rods 36 and the upper filter plate 37 out of the dehydration barrel 4, and the piston rod of the push cylinder 4 39 contracts to disengage the clamping plate 38 from the multiple vertical rods 36, so that the lower filter plate 35 is disengaged from the upper filter plate 37, thereby releasing the cellulose ether, which is convenient for subsequent drying in a dryer and then being scattered and packaged.

[0040] The main functions achieved by the present invention are:

[0041] 1. The atmosphere is isolated by a sealing membrane, and there is no need to evacuate or fill with nitrogen, which reduces the waste of working hours and does not require a vacuum pump system. It has a simple structure and good practicality.

[0042] 2. It can crush the cellulose raw materials and improve the cellulose etherification rate;

[0043] 3. Press the sealing film to knead the solution to promote uniform mixing of the solution;

[0044] 4. The cellulose ether can be salvaged and the water can be dried by centrifugation.

[0045] The installation, connection or setting methods of the continuous production equipment of cellulose ether of the present invention are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented; the pretreatment barrel 1, alkalization kettle 2, etherification kettle 3, dehydration barrel 4, sealing film 1 5, sealing film 2 6, push cylinder 1 12, motor 1 13, knife wheel 15, piston 16, push cylinder 2 17, push cylinder 3 19, air intake pipe 22, plugging cap 23, pressure limiting valve 24, steam pipe 26, four-way valve 1 29, four-way valve 2 32, lower filter plate 35, upper filter plate 37, push cylinder 4 39, motor 2 41, push cylinder 5 42, and turntable 43 of the continuous production equipment of cellulose ether of the present invention are purchased on the market, and technicians in the industry only need to install and operate them according to the attached instruction manual, without the need for technicians in the field to make creative labor.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cellulose ether continuous production device, comprising a pretreatment barrel (1), an alkalization kettle (2), an etherification kettle (3) and a dehydration barrel (4), wherein a treatment chamber is arranged inside the pretreatment barrel (1), an alkalization chamber is arranged inside the alkalization kettle (2), an etherification chamber is arranged inside the etherification kettle (3), and a dehydration chamber is arranged inside the dehydration barrel (4); characterized in that: It also includes a sealing film 1 (5), a sealing film 2 (6), a liquid delivery pipeline (7), a crushing assembly and a salvaging mechanism. The sealing film 1 (5) is arranged in the middle of the alkalization chamber of the alkalization kettle (2). The sealing film 1 (5) divides the alkalization chamber of the alkalization kettle (2) into an upper part and a lower part. The lower part of the alkalization chamber of the alkalization kettle (2) is in a vacuum state, so that the sealing film 1 (5) is tightly attached to the bottom wall of the alkalization chamber of the alkalization kettle (2) under the action of atmospheric pressure. The sealing film 2 (6) is arranged in the middle of the etherification chamber of the etherification kettle (3). The sealing film 2 (6) divides the etherification chamber of the etherification kettle (3) into an upper part and a lower part. The lower part of the etherification chamber of the etherification kettle (3) is in a vacuum state, so that the sealing film 2 (6) is closely attached to the bottom wall of the etherification chamber of the etherification kettle (3) under the action of atmospheric pressure. The liquid delivery pipeline (7) is respectively connected to the pretreatment barrel (1), the alkalization kettle (2), the lower port of the etherification kettle (3) and the inlet of the dehydration barrel (4). The crushing assembly is installed in the treatment chamber of the pretreatment barrel (1), and the salvaging mechanism is installed in the dehydration chamber of the dehydration barrel (4).

2. The continuous production equipment for cellulose ether according to claim 1, characterized in that: It also includes an interlayer 1 (8), a water inlet pipe (9) and a water outlet pipe (10). The interlayer 1 (8) is arranged in the side wall of the pretreatment barrel (1), the water inlet pipe (9) is connected to the interlayer 1 (8), and the water outlet pipe (10) is arranged on the inner wall of the pretreatment barrel (1), and the water outlet pipe (10) is connected to the interlayer 1 (8).

3. The continuous production equipment for cellulose ether according to claim 1, characterized in that: The pulverizing assembly comprises a crossbeam (11), a push cylinder (12), a motor (13), a drive shaft (14), a plurality of cutter wheels (15) and a piston (16); the crossbeam (11) is mounted on one end of the push cylinder (12); the other end of the push cylinder (12) is mounted on the pretreatment barrel (1); the motor (13) is mounted on the crossbeam (11); the output shaft of the motor (13) is connected in a transmission manner; the drive shaft (14) is rotatably mounted on the crossbeam (11); a plurality of cutter wheels (15) are rotatably arranged on the lower side wall of the drive shaft (14); a plurality of blades are circumferentially arranged on the plurality of cutter wheels (15); the cutting edges of the plurality of blades are in contact with the bottom wall and the inner wall of the pretreatment barrel (1); a piston (16) is arranged at the lower end of the drive shaft (14); the piston (16) closes the lower end of the pretreatment barrel (1).

4. The continuous production equipment for cellulose ether according to claim 1, characterized in that: It also includes a push cylinder 2 (17) and a push plate 1 (18), wherein the fixed end of the push cylinder 2 (17) is mounted on the upper part of the alkalizing kettle (2), and the lower end of the piston rod of the push cylinder 2 (17) is provided with a push plate 1 (18), and the push plate 1 (18) is connected to the middle upper part of the sealing membrane 1 (5).

5. The continuous production equipment for cellulose ether according to claim 1, characterized in that: It also includes a push cylinder three (19) and a push plate two (20). The fixed end of the push cylinder three (19) is installed on the upper part of the etherification kettle (3). The lower end of the piston rod of the push cylinder three (19) is provided with a push cylinder three (19). The push cylinder three (19) is connected to the middle upper part of the sealing membrane two (6).

6. The continuous production equipment for cellulose ether according to claim 5, characterized in that: It also includes a second interlayer (21), an air inlet pipe (22), a plugging cap (23) and a pressure limiting valve (24). The second interlayer (21) is arranged in the side wall of the etherification kettle (3). The air inlet pipe (22) is installed on the etherification kettle (3). The air inlet pipe (22) is connected to the second interlayer (21). A plurality of vent holes are arranged at the bottom of the etherification chamber of the etherification kettle (3). The plurality of vent holes are connected to the second interlayer (21). A plurality of plugging caps (23) are respectively installed in the plurality of vent holes through spring elastic sealing. A plurality of air outlet holes are arranged at the lower part of the side wall of the plurality of plugging caps (23). The pressure limiting valve (24) is arranged on the second sealing membrane (6).

7. The continuous production equipment for cellulose ether according to claim 6, characterized in that: It also includes an interlayer three (25), a steam pipe (26) and an air outlet (27). The interlayer three (25) is arranged in the side wall of the dehydration barrel (4). One end of the steam pipe (26) is connected to the upper part of the etherification chamber of the etherification kettle (3). The other end of the steam pipe (26) is connected to the interlayer three (25). A plurality of air outlets (27) are arranged on the inner wall of the dehydration barrel (4). The plurality of air outlets (27) are connected to the interlayer three (25).

8. The continuous production equipment for cellulose ether according to claim 1, characterized in that: The liquid delivery pipeline (7) comprises a connecting pipe (28), a four-way valve (29), an alkali liquid pipe (30), a connecting pipe (31), a four-way valve (32), an etherifying agent pipe (33) and a connecting pipe (34). One end of the connecting pipe (28) is connected to the lower port of the pretreatment barrel (1), the other end of the connecting pipe (28) is connected to the first channel of the four-way valve (29), the second channel of the four-way valve (29) is connected to the lower port of the alkalization kettle (2), and the alkali liquid pipe (30) is connected to the third channel of the four-way valve (29). The channels are connected, one end of the connecting pipe 2 (31) is connected to the fourth channel of the four-way valve 1 (29), the other end of the connecting pipe 2 (31) is connected to the first channel of the connecting pipe 2 (31), the second channel of the four-way valve 2 (32) is connected to the lower end of the etherification kettle (3), the etherification agent pipe (33) is connected to the third channel of the four-way valve 2 (32), one end of the connecting pipe 3 (34) is connected to the fourth channel of the etherification agent pipe (33), and the other end of the connecting pipe 3 (34) is connected to the middle of the dehydration chamber of the dehydration bucket (4).

9. The continuous production equipment for cellulose ether according to claim 1, characterized in that: The salvaging mechanism comprises a lower filter plate (35), a plurality of vertical rods (36), an upper filter plate (37), a clamping plate (38), a fourth push cylinder (39), a rotating shaft (40), a second motor (41) and a lifting assembly, wherein the lower filter plate (35) is slidably mounted on the lower part of the dehydration chamber of the dehydration barrel (4), a plurality of vertical rods (36) are vertically arranged on the lower filter plate (35), and a plurality of slot openings are arranged on the plurality of vertical rods (36), and an upper filter plate (37) is slidably mounted on the upper part of the dehydration chamber of the dehydration barrel (4), and the upper filter plate (37) A avoidance hole matching the plurality of vertical rods (36) is provided on the upper filter plate (37); a clamping plate (38) is slidably mounted on the upper filter plate (37); the clamping plate (38) matches and aligns with slots of the plurality of vertical rods (36); a push cylinder (39) is mounted on the upper filter plate (37); a piston rod of the push cylinder (39) is connected to the clamping plate (38); a lower end of a rotating shaft (40) is connected to a middle portion of the upper filter plate (37); a second motor (41) is mounted on the lifting assembly; an output shaft of the second motor (41) is drivingly connected to the rotating shaft (40).

10. The continuous production equipment for cellulose ether according to claim 9, characterized in that: The lifting assembly comprises a second motor (41), a turntable (43) and a cross frame (44). The turntable (43) is mounted on the piston rod of the second motor (41), the cross frame (44) is mounted on the rotating end of the turntable (43), and the second motor (41) is mounted on the cross frame (44).

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