Continuous polymeric processing equipment and method based on polyester staple fibers

Abstract

The application discloses a kind of continuous polymerization processing equipment and method based on polyester staple fiber, including support frame, the upper side middle end of the support frame is fixedly connected with the processing bin for polyester staple fiber continuous polymerization, the bottom of the processing bin is equipped with first valve, the inner end of the processing bin is rotatably connected with stirring rod, the right upper side of the support frame is equipped with motor, the output end of the motor is connected with sprocket assembly, the lower side of the support frame is equipped with vacuum pump close to motor, the suction end of the vacuum pump is fixedly connected with conduit, the upper end of the conduit is connected with condensing piece, and the application relates to waste gas treatment technical field.The continuous polymerization processing equipment and method based on polyester staple fiber, by setting scraper and filter ring in device, stirring rod drives scraper to rotate in rotation process, scraper is scraped to the surface of rotating filter ring, promote the impurities of filter ring surface to fall off, avoid the blockage caused by powder catalyst in polymerization reaction and adhere to filter ring.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and in particular to a continuous polymerization processing device and method based on polyester staple fibers. Background Art

[0002] In the production process of polyester staple fibers, it is necessary to carry out esterification reaction between the corresponding terephthalic acid and methanol and discharge low-boiling substances such as water vapor and methanol, and then carry out ester exchange and final polycondensation operation on the generated dimethyl terephthalate. During the use of the existing continuous polymerization processing equipment for polyester staple fibers, corresponding vacuum equipment is required to carry out vacuum operation on it. However, the vacuum end of most of such vacuum equipment does not have an anti-blocking function. Impurities such as powdered catalysts added in the polymerization reaction will adhere to the filter at the vacuum end during the vacuum process, thereby causing blockage of the vacuum end, affecting the vacuum operation and interfering with subsequent catalytic operations. Moreover, when the equipment processes the water vapor, methanol vapor, etc. distilled after the esterification reaction, it is easy to cause insufficient recovery of the above-mentioned impurities due to operations such as too fast extraction and incomplete condensation at the condensation end, thereby causing direct discharge of toxic substances and creating safety hazards. In addition, it is difficult for the device to terminate the extraction in time when the recovery efficiency at the condensation end is poor, affecting the recovery efficiency of impurities such as methanol. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the present invention provides a continuous polymerization processing equipment and method based on polyester staple fibers, which solves the problem that the vacuum end of the equipment does not have an anti-blocking function, affecting subsequent vacuuming and catalytic operations.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A continuous polymerization processing equipment based on polyester staple fibers, comprising a support frame, a processing chamber for continuous polymerization of polyester staple fibers fixedly connected to the middle end of the upper side of the support frame, a first valve provided at the bottom of the processing chamber, a stirring rod rotatably connected to the inner end of the processing chamber, a motor provided on the upper right side of the support frame, a sprocket assembly connected to the output end of the motor, and the other side of the sprocket assembly connected to the stirring rod, a vacuum pump provided on the support frame near the lower side of the motor, a conduit fixedly connected to the suction end of the vacuum pump, a condensation member connected to the processing chamber at the upper end of the conduit, a three-way valve connected to the condensation member fixedly connected to the top of the support frame, a water pump provided on the right side of the support frame near the vacuum pump, a water pump discharge end fixedly connected to a water pipe connected to the condensation member, a negative pressure pump fixedly connected to the upper left end of the support frame, a pressure pipe fixedly connected to the left side of the three-way valve at the exhaust end of the negative pressure pump, a feeding pipe assembly provided on the upper left end of the processing chamber, an anti-blocking member connected to the upper end of the driving sprocket in the sprocket assembly, and a transition tank connected to the exhaust side of the vacuum pump;

[0005] The condensation component is composed of a second valve, a ventilation groove, a filter ring, a scraper, a cooling shell, a cooling plate, a discharge pipe, a solenoid valve, and a filter element. The second valve is fixedly connected to the lower side of the three-way valve and is fixedly connected to the processing chamber. A ventilation groove is provided on the upper side of the stirring rod near the second valve end. The stirring rod is fixedly connected to the filter ring near the top of the inner side of the processing chamber. The processing chamber is fixedly connected to the scraper near the filter ring end. The right side of the three-way valve is fixedly connected to the cooling shell. The back side of the cooling plate is fixedly connected and communicated with the water pipe. The right side of the cooling shell is connected to the filter element. The right side of the filter element is connected to the upper end of the conduit. An auxiliary flow valve is provided on the upper side of the conduit.

[0006] The ventilation groove is connected to the filter ring, the scraper is fitted with the surface of the filter ring, the cooling shell is fixedly connected to the cooling plate, the front side of the cooling plate is provided with a return pipe connected to the water pipe, the bottom of the cooling shell is fixedly connected and connected to the discharge pipe, the bottom of the discharge pipe is fixedly connected to the solenoid valve, the bottom of the solenoid valve is fixedly connected with a discharge pipe, the filter element is composed of a preheating shell, a heating pipe, a shell, a cooling pipe, an adjusting piece, a vortex tube, a hot air pipe, a cold air pipe, and an air compressor assembly, the preheating shell is fixedly connected to the processing bin and is fixedly connected and connected to the right side of the adjusting piece, the right side of the shell is fixedly connected and connected to the conduit, the air compressor assembly is fixedly connected to the processing bin, and the inner ends of the heating pipe and the cooling pipe are hollow.

[0007] Preferably, the inner end of the preheating shell is fixedly connected to the heating pipe, the heating pipe is electrically connected to an external power supply, the preheating shell is provided with a temperature sensor near the heating pipe, the right side of the preheating shell is fixedly connected to and communicated with the shell, the inner end of the shell is fixedly connected to the cooling pipe, the lower side of the connection between the preheating shell and the shell is fixedly connected to the vortex tube, the lower right end of the cooling tube is connected to the adjusting member, the left side of the vortex tube is fixedly connected to and communicated with the hot air pipe, the right side of the vortex tube is fixedly connected to and communicated with the cold air pipe, and the hot air pipe is fixedly connected to and communicated with the heating pipe. The cold air pipe is fixedly connected and communicated with the cooling pipe, and the air compressor assembly is connected to the air inlet end at the bottom of the vortex tube; the adjusting part is composed of a casing, a spring assembly, a support plate, a pressure sensor, and a feed pipe. The casing is fixedly connected and communicated with the shell and is located at the lower end of the cooling pipe. The upper inner side of the casing is slidably connected to the support plate, the upper side of the spring assembly is connected to the support plate, the bottom of the spring assembly is connected to the pressure sensor, and the pressure sensor is fixedly connected to the inner bottom of the casing. The back side of the casing is fixedly connected and communicated with the feed pipe near the lower end of the support plate.

[0008] Preferably, a gasket is provided on the edge of the support plate, the pressure sensor is electrically connected to the external controller, the discharge pipe is fixedly connected to the external liquid pumping component, and the external controller is electrically connected to the external liquid pumping component and the auxiliary solenoid valve respectively.

[0009] Preferably, the anti-blocking component is composed of a bevel gear assembly, a pulley assembly, and an anti-blocking brush. The driving bevel gear assembly in the bevel gear assembly is coaxially fixedly connected to the upper end of the driving sprocket in the sprocket assembly. The support frame is provided with a protective shell near the outside of the bevel gear assembly. The driven bevel gear in the bevel gear assembly is rotatably connected to the inner end of the protective shell and is coaxially fixedly connected to the driving pulley in the pulley assembly. The driven pulley in the pulley assembly is fixedly connected to the anti-blocking brush. A filter is provided at the air compressor exhaust end in the air compressor assembly, and the bristle end of the anti-blocking brush fits with the filter at the air compressor exhaust end in the air compressor assembly.

[0010] Preferably, a discharge pipe is fixedly connected to the bottom of the first valve, a heating plate electrically connected to an external controller is provided inside the processing chamber near the edge of the stirring rod, an air pressure sensor is provided at the inner end of the processing chamber, and the support frame is provided with a slot connected to the ventilation groove and the bottom of the three-way valve respectively near the second valve and the three-way valve.

[0011] Preferably, the water pumping end is fixedly connected to a water pipe connected to an external water source, the air pumping end is connected to an external nitrogen source, and a third valve is provided in the feeding pipe assembly.

[0012] The present invention also discloses a continuous polymerization processing device and method based on polyester staple fibers, which specifically comprises the following steps:

[0013] Step 1: The user starts the vacuum pump, which evacuates the processing chamber through the conduit, condenser, and three-way valve. After the evacuation is completed, the second valve is closed and the third valve in the feeding pipe assembly is opened. Under the action of external air pressure, terephthalic acid and methanol for preparing polyester staple fibers are pressed into the processing chamber. Then, the third valve in the feeding pipe assembly is closed and the motor is started. The motor drives the stirring rod to rotate through the sprocket assembly. The rotating stirring rod stirs the mixture of terephthalic acid and methanol, powering the heating plate in the processing chamber. The heating plate generates heat to provide a suitable temperature for the esterification reaction in the processing chamber. Terephthalic acid and methanol are esterified to produce dimethyl terephthalate. Low-boiling substances including methanol, water vapor, and methyl benzoate remain in the processing chamber.

[0014] Step 2: In step 1, after the production of dimethyl terephthalate is completed, the temperature in the processing chamber is adjusted in sequence by the heating plate according to the boiling points of the low-boiling substances including methanol, water vapor, methyl benzoate, etc., so that the second valve in the condensing part is opened, and the vacuum pump, water pump, and air compressor assembly are started. The water pump introduces external cold water into the cooling plate in the cooling shell through the water pipe and the water pipe, and finally the cold water is discharged to the water source through the reflux pipe on the front side of the cooling plate. At this time, the vacuum pump is used to evacuate the processing chamber through the conduit, filter element, cooling shell, three-way valve, ventilation groove, and filter ring. During operation, the steam that has reached the boiling point and evaporated in the processing chamber is introduced into the cooling shell through the filter ring, ventilation groove, second valve, and three-way valve. When the steam passes through the cooling plate in the cooling shell, the cold water flowing through the cooling plate absorbs heat and cools the steam through heat exchange, promoting the steam to liquefy when cooled. The liquefied steam is retained in the discharge pipe. When the liquid volume in the discharge pipe accumulates to a suitable level, the solenoid valve is opened, and the liquid is discharged through the solenoid valve and discharge pipe. The rotation of the stirring rod drives the filter ring to rotate, and the scraper scrapes the surface of the rotating filter ring to promote the shedding of impurities on the filter ring surface to avoid clogging.

[0015] Step 3: In step 2, the air compressor in the air compressor assembly draws in and compresses external air, and then the compressed air is injected into the vortex tube of the pipe conduit. The vortex tube converts the compressed air into hot air and cold air through vortex conversion, wherein the hot air is injected into the heating pipe through the flow valve and the hot air pipe and discharged to the outside of the device, and the cold air is injected into the cooling pipe through the cold air pipe and discharged. When the steam in the cooling shell is not fully liquefied, the residual steam enters the preheating shell, and the heating pipe in the preheating shell reheats the residual steam. The residual steam is cooled and liquefied again after passing through the cooling pipe. The cooled and liquefied liquid is retained on the support plate in the regulating component. As the liquid accumulates, the liquid compresses the spring assembly through the support plate. At this time, the support plate moves downward, and the pressure sensor detects the pressure of the spring assembly, the support plate and the accumulated liquid. After the upper side of the support plate moves to the lower side of the liquid extraction point of the discharge pipe, the pressure sensor transmits the pressure signal to the external controller, and the external controller transmits an electrical signal to the corresponding liquid extraction component and the auxiliary solenoid valve on the upper side of the conduit, and the liquid extraction component extracts the liquid through the discharge pipe.

[0016] Preferably, the driving sprocket in the sprocket assembly drives the anti-blocking brush to rotate through the bevel gear assembly and the pulley assembly, and the bristle end of the anti-blocking brush cleans the exhaust side filter of the air compressor assembly to avoid blockage.

[0017] Beneficial effects

[0018] The present invention provides a continuous polymerization processing device and method based on polyester staple fibers. Compared with the prior art, it has the following advantages:

[0019] (1) The continuous polymerization processing equipment based on polyester staple fibers is provided with a scraper and a filter ring in the device. The scraper is driven to rotate during the rotation of the stirring rod. The scraper scrapes the surface of the rotating filter ring, promoting the removal of impurities on the surface of the filter ring, thereby avoiding clogging caused by the powdered catalyst in the polymerization reaction adhering to the filter ring.

[0020] (2) The continuous polymerization processing equipment based on polyester staple fibers is provided with a filter element in the device. During the process of removing impurities such as methanol, the air compressor in the air compressor assembly draws in and compresses the external gas, and then the compressed gas is injected into the vortex tube through the injection pipe. The vortex tube converts the compressed air into hot gas and cold gas through vortex conversion, wherein the hot gas is injected into the heating tube through the flow valve and the hot gas pipe and discharged to the outside of the device, and the cold gas is injected into the cooling tube through the cold gas pipe and discharged. When the steam in the cooling shell is not fully liquefied, the residual steam gas enters the preheating shell, and the heating tube in the preheating shell performs secondary heating on the gas. After the gas passes through the cooling tube, the steam in the gas is cooled and liquefied again, thereby realizing secondary treatment of the steam, avoiding the direct discharge of impurities such as methanol to cause safety hazards, and increasing the recovery rate of impurities such as methanol.

[0021] (3) The continuous polymerization processing equipment based on polyester staple fibers is provided with an adjusting part in the device. The liquid liquefied by cooling is retained on the support plate in the adjusting part. As the liquid accumulates, the liquid compresses the spring assembly through the support plate. At this time, the support plate moves downward, and the pressure sensor detects the pressure of the spring assembly, the support plate and the accumulated liquid. After the upper side of the support plate moves to the lower side of the liquid extraction point of the discharge pipe, the pressure sensor transmits the pressure signal to the external controller, and the external controller transmits the electrical signal to the corresponding liquid extraction component and the auxiliary solenoid valve on the upper side of the conduit. The liquid extraction component extracts the liquid through the discharge pipe, and the auxiliary solenoid valve is closed to prevent the methanol gas impurities from further spreading.

[0022] (4) The continuous polymerization processing equipment based on polyester staple fibers is provided with an anti-blocking part in the device. During the operation of the sprocket assembly, the driving sprocket in the sprocket assembly drives the anti-blocking brush to rotate through the bevel gear assembly and the pulley assembly, and the bristle end of the anti-blocking brush cleans the filter screen on the exhaust side of the air compressor assembly to avoid blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a cross-sectional view of the structure of the present invention;

[0024] Figure 2 This is a structural front view of the present invention;

[0025] Figure 3 For the present invention Figure 1 A partial enlarged view of point A in the middle;

[0026] Figure 4 For the present invention Figure 1A partial enlarged view of point B in the middle;

[0027] Figure 5 This is a cross-sectional view of the structure of the inner filter element of the present invention;

[0028] Figure 6 It is a back view of the inner filter element of the present invention;

[0029] Figure 7 is an enlarged view of the inner adjusting member of the present invention;

[0030] Figure 8 An enlarged view of the internal vacuum assembly of the present invention;

[0031] Figure 9 is a cross-sectional view of the inner anti-blocking member of the present invention;

[0032] Figure 10 It is a side sectional view of the anti-blocking brush in the inner figure of the present invention.

[0033] In the figure: 1, support frame; 2, processing chamber; 3, first valve; 4, stirring rod; 5, motor; 6, sprocket assembly; 7, vacuum pump; 8, conduit; 9, condenser; 91, second valve; 92, vent groove; 93, filter ring; 94, scraper; 95, cooling shell; 96, cooling plate; 97, discharge pipe; 98, solenoid valve; 99, filter element; 991, preheating shell; 992, heating pipe; 993, shell; 994, cooling pipe; 995, adjustment element; 9951 , casing; 9952, spring assembly; 9953, support plate; 9954, pressure sensor; 9955, feed pipe; 996, vortex tube; 997, hot air pipe; 998, cold air pipe; 999, air compressor assembly; 10, three-way valve; 11, water pump; 12, water pipe; 13, negative pressure pump; 14, pressure pipe; 15, feed pipe assembly; 16, anti-blocking part; 161, bevel gear assembly; 162, pulley assembly; 163, anti-blocking brush; 17, transition tank. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] like Figure 1-4The first embodiment shown is a continuous polymerization processing equipment based on polyester staple fibers, comprising a support frame 1, a processing chamber 2 for continuous polymerization of polyester staple fibers fixedly connected to the middle end of the upper side of the support frame 1, a first valve 3 is provided at the bottom of the processing chamber 2, a stirring rod 4 is rotatably connected to the inner end of the processing chamber 2, a motor 5 is provided on the upper right side of the support frame 1, a sprocket assembly 6 is connected to the output end of the motor 5, and the other side of the sprocket assembly 6 is connected to the stirring rod 4, a vacuum pump 7 is provided on the lower side of the support frame 1 near the motor 5, a conduit 8 is fixedly connected to the suction end of the vacuum pump 7, and the upper end of the conduit 8 is connected to the There is a condensation piece 9 connected to the processing chamber 2, a three-way valve 10 connected to the condensation piece 9 is fixedly connected to the top of the support frame 1, a water pump 11 is provided on the right side of the support frame 1 near the vacuum pump 7, the drainage end of the water pump 11 is fixedly connected to a water pipe 12 connected to the condensation piece 9, a negative pressure pump 13 is fixedly connected to the upper left end of the support frame 1, and a pressure pipe 14 is fixedly connected to the left side of the three-way valve 10 at the exhaust end of the negative pressure pump 13. A feeding pipe assembly 15 is provided at the upper left end of the processing chamber 2, an anti-blocking piece 16 is connected to the upper end of the driving sprocket in the sprocket assembly 6, and a transition tank 17 is connected to the exhaust side of the vacuum pump 7;

[0036] The condensation element 9 is composed of a second valve 91, a ventilation groove 92, a filter ring 93, a scraper 94, a cooling shell 95, a cooling plate 96, a discharge pipe 97, a solenoid valve 98, and a filter element 99. The second valve 91 is fixedly connected to the lower side of the three-way valve 10 and is fixedly connected to the processing chamber 2. A ventilation groove 92 is provided on the upper side of the stirring rod 4 near the end of the second valve 91. The stirring rod 4 is fixedly connected to the filter ring 93 near the top of the inner side of the processing chamber 2. The processing chamber 2 is fixedly connected to the scraper 94 near the end of the filter ring 93. The ventilation groove 92 is connected to the filter ring 93. The scraper 94 is connected to the surface of the filter ring 93. Fitting, the right side of the three-way valve 10 is fixedly connected to the cooling shell 95, the cooling shell 95 is fixedly connected to the cooling plate 96, the back side of the cooling plate 96 is fixedly connected and communicated with the water pipe 12, the front side of the cooling plate 96 is provided with a reflux pipe communicated with the water pipe 12, the bottom of the cooling shell 95 is fixedly connected and communicated with the discharge pipe 97, the bottom of the discharge pipe 97 is fixedly connected to the solenoid valve 98, the bottom of the solenoid valve 98 is fixedly connected to a discharge pipe, the right side of the cooling shell 95 is connected to the filter element 99, the right side of the filter element 99 is connected to the upper end of the conduit 8, and the upper side of the conduit 8 is provided with an auxiliary flow valve;

[0037] During the process of distilling out methanol and other impurities, the second valve 91 in the condensing element 9 is opened, and the vacuum pump 7 and the water pump 11 are started. The water pump 11 introduces external cold water into the cooling plate 96 in the cooling shell 95 through the water pipe and the water pipe 12, and finally the cold water is discharged to the water source through the reflux pipe on the front side of the cooling plate 96. At this time, the vacuum pump 7 performs an evacuation operation on the processing chamber 2 through the conduit 8, the filter element 99, the cooling shell 95, the three-way valve 10, the ventilation groove 92, and the filter ring 93; the rotation of the stirring rod 4 drives the filter ring 93 to rotate, and the scraper 94 scrapes the surface of the rotating filter ring 93 to promote the shedding of impurities on the surface of the filter ring 93, thereby avoiding clogging caused by the powdered catalyst in the polymerization reaction adhering to the filter ring 93;

[0038] like Figure 1-6 The second embodiment shown is mainly different from the first embodiment in that:

[0039] The filter element 99 is composed of a preheating shell 991, a heating tube 992, a shell 993, a cooling tube 994, an adjusting member 995, a vortex tube 996, a hot air tube 997, a cold air tube 998, and an air compressor assembly 999. The preheating shell 991 is fixedly connected to the processing chamber 2 and is fixedly connected to and communicated with the right side of the adjusting member 995. The right side of the shell 993 is fixedly connected to and communicated with the conduit 8. The air compressor assembly 999 is fixedly connected to the processing chamber 2. The inner ends of the heating tube 992 and the cooling tube 994 are hollow.

[0040] The inner end of the preheating shell 991 is fixedly connected to the heating tube 992, and the heating tube 992 is electrically connected to the external power supply. A temperature sensor is provided on the side of the preheating shell 991 near the heating tube 992. The right side of the preheating shell 991 is fixedly connected and communicated with the shell 993. The inner end of the shell 993 is fixedly connected to the cooling tube 994. The lower side of the connection between the preheating shell 991 and the shell 993 is fixedly connected to the vortex tube 996. The lower right end of the cooling tube 994 is connected to the adjusting member 995. The left side of the vortex tube 996 is fixedly connected and communicated with the hot air pipe 997. The right side of the vortex tube 996 is fixedly connected and communicated with the cold air pipe 998. The hot air pipe 997 is fixedly connected and communicated with the heating tube 992. The cold air pipe 998 is fixedly connected and communicated with the cooling tube 994. The air compressor assembly 999 is connected to the bottom air inlet end of the vortex tube 996.

[0041] In the process of removing impurities such as methanol, the air compressor in the air compressor assembly 999 draws in and compresses external gas, and then the compressed gas is introduced into the vortex tube 996 through the injection pipe. The vortex tube 996 converts the compressed air into hot gas and cold gas through vortex conversion, wherein the hot gas is injected into the heating tube 992 through the flow valve and the hot gas pipe 997 and discharged to the outside of the device, and the cold gas is injected into the cooling tube 994 through the cold gas pipe 998 and discharged. When the steam in the cooling shell 95 is not fully liquefied, the residual steam enters the preheating shell 991, and the heating tube 992 in the preheating shell 991 performs secondary heating on the residual steam. The residual steam is cooled and liquefied after passing through the cooling tube 994, thereby realizing secondary treatment of the steam, avoiding the direct discharge of impurities such as methanol to cause safety hazards, and increasing the recovery rate of impurities such as methanol;

[0042] like Figure 1-7 The third embodiment shown is mainly different from the second embodiment in that:

[0043] The regulating member 995 is composed of a casing 9951, a spring assembly 9952, a support plate 9953, a pressure sensor 9954, and a discharge pipe 9955. The casing 9951 is fixedly connected and communicated with the shell 993 and is located at the lower end of the cooling pipe 994. The upper inner side of the casing 9951 is slidably connected with the support plate 9953. The upper side of the spring assembly 9952 is connected to the support plate 9953. The bottom of the spring assembly 9952 is connected to the pressure sensor 9954. The pressure sensor 9954 is fixedly connected to the inner bottom of the casing 9951. The back side of the casing 9951 is fixedly connected and communicated with the discharge pipe 9955 near the lower end of the support plate 9953. A gasket is provided on the edge of the support plate 9953. The pressure sensor 9954 is electrically connected to the external controller. The discharge pipe 9955 is fixedly connected to the external liquid pumping component. The external controller is electrically connected to the external liquid pumping component and the auxiliary solenoid valve respectively. Part of the liquid pumping end of the external liquid pumping component is communicated with the lower end of the solenoid valve 98.

[0044] The liquid that is liquefied by cooling is retained on the support plate 9953 in the regulating member 995. As the liquid accumulates, the liquid compresses the spring assembly 9952 through the support plate 9953. At this time, the support plate 9953 moves downward, and the pressure sensor 9954 detects the pressure of the spring assembly 9952, the support plate 9953 and the accumulated liquid. After the upper side of the support plate 9953 moves to the lower side of the liquid extraction point of the discharge pipe 9955, the pressure sensor 9954 transmits the pressure signal to the external controller, and the external controller transmits the electrical signal to the corresponding liquid extraction component and the auxiliary solenoid valve on the upper side of the conduit 8. The liquid extraction component extracts the liquid through the discharge pipe 9955, and the auxiliary solenoid valve is closed to prevent the further diffusion of methanol gas impurities.

[0045] like Figure 1-10 The fourth embodiment shown is mainly different from the third embodiment in that:

[0046] The anti-blocking member 16 is composed of a bevel gear assembly 161, a pulley assembly 162, and an anti-blocking brush 163. The driving bevel gear assembly in the bevel gear assembly 161 is coaxially fixedly connected to the upper end of the driving sprocket in the sprocket assembly 6. The support frame 1 is provided with a protective shell near the outside of the bevel gear assembly 161. The driven bevel gear in the bevel gear assembly 161 is rotatably connected to the inner end of the protective shell and is coaxially fixedly connected to the driving pulley in the pulley assembly 162. The driven pulley in the pulley assembly 162 is fixedly connected to the anti-blocking brush 163. A filter is provided at the air compressor exhaust end in the air compressor assembly 999, and the bristle end of the anti-blocking brush 163 fits the filter at the air compressor exhaust end in the air compressor assembly 999.

[0047] A discharge pipe is fixedly connected to the bottom of the first valve 3, a heating plate electrically connected to the external controller is provided inside the processing chamber 2 near the edge of the stirring rod 4, an air pressure sensor is provided at the inner end of the processing chamber 2, and a slot is provided between the support frame 1 near the second valve 91 and the three-way valve 10, which are respectively connected to the ventilation slot 92 and the bottom of the three-way valve 10, the water pumping end of the water pump 11 is fixedly connected to a water pipe connected to an external water source, the air suction end of the negative pressure pump 13 is connected to an external nitrogen source, and a third valve is provided in the feeding pipe assembly 15; during the operation of the sprocket assembly 6, the active sprocket in the sprocket assembly 6 drives the anti-blocking brush 163 to rotate through the bevel gear assembly 161 and the pulley assembly 162, and the bristle end of the anti-blocking brush 163 cleans the air suction side filter of the air compressor assembly 999 to avoid blockage.

[0048] The present invention also discloses a continuous polymerization processing device and method based on polyester staple fibers, which specifically comprises the following steps:

[0049] Step 1: The user starts the vacuum pump 7, which performs a vacuum treatment on the processing chamber 2 through the conduit 8, the condensing element 9, and the three-way valve 10. After the vacuum treatment is completed, the second valve 91 is closed, and the third valve in the feeding pipe assembly 15 is opened. Under the action of external air pressure, terephthalic acid and methanol for preparing polyester staple fibers are pressed into the processing chamber 2. Then, the third valve in the feeding pipe assembly 15 is closed, and the motor 5 is started. The motor 5 drives the stirring rod 4 to rotate through the sprocket assembly 6. The rotating stirring rod 4 stirs the mixture of terephthalic acid and methanol, and supplies power to the heating plate in the processing chamber 2. The heating plate generates heat to provide a suitable temperature for the esterification reaction in the processing chamber 2. Terephthalic acid and methanol are esterified to produce dimethyl terephthalate. Low-boiling substances including methanol, water vapor, and methyl benzoate remain in the processing chamber 2.

[0050] Step 2: In step 1, after the production of dimethyl terephthalate is completed, the temperature in the processing chamber 2 is adjusted in sequence by the heating plate according to the boiling points of the low-boiling substances including methanol, water vapor, methyl benzoate, etc., so that the second valve 91 in the condensing part 9 is opened, and the vacuum pump 7, the water pump 11, and the air compressor assembly 999 are started. The water pump 11 introduces external cold water into the cooling plate 96 in the cooling shell 95 through the water pipe and the water pipe 12, and finally the cold water is discharged to the water source through the reflux pipe on the front side of the cooling plate 96. At this time, the vacuum pump 7 evacuates the processing chamber 2 through the conduit 8, the filter element 99, the cooling shell 95, the three-way valve 10, the ventilation groove 92, and the filter ring 93. During operation, the steam that has reached the boiling point and evaporated in the processing chamber 2 is introduced into the cooling shell 95 through the filter ring 93, the ventilation groove 92, the second valve 91, and the three-way valve 10. When the steam passes through the cooling plate 96 in the cooling shell 95, the cold water flowing through the cooling plate 96 absorbs heat and cools the steam through heat exchange, promoting the steam to liquefy when cooled. The liquefied steam is retained in the discharge pipe 97. After the liquid in the discharge pipe 97 accumulates to a suitable liquid level, the solenoid valve 98 is opened, and the liquid is discharged through the solenoid valve 98 and the discharge pipe. The rotation of the stirring rod 4 drives the filter ring 93 to rotate, and the scraper 94 scrapes the surface of the rotating filter ring 93 to promote the shedding of impurities on the surface of the filter ring 93 to avoid clogging.

[0051] Step 3: In step 2, the air compressor in the air compressor assembly 999 draws in and compresses the external gas, and then the compressed gas is introduced into the vortex tube 996 through the injection pipe. The vortex tube 996 converts the compressed air into hot gas and cold gas through vortex conversion, wherein the hot gas is injected into the heating tube 992 through the flow valve and the hot gas pipe 997 and discharged to the outside of the device, and the cold gas is injected into the cooling tube 994 through the cold gas pipe 998 and discharged. When the steam in the cooling shell 95 is not fully liquefied, the residual steam enters the preheating shell 991, and the heating tube 992 in the preheating shell 991 performs secondary heating on the residual steam. The residual steam is cooled and liquefied again after passing through the cooling tube 994. The liquid that is liquefied by cooling is retained on the support plate 9953 in the regulating part 995. As the liquid accumulates, the liquid compresses the spring assembly 9952 through the support plate 9953. At this time, the support plate 9953 moves downward, and the pressure sensor 9954 detects the pressure of the spring assembly 9952, the support plate 9953 and the accumulated liquid. After the upper side of the support plate 9953 moves to the lower side of the liquid extraction point of the discharge pipe 9955, the pressure sensor 9954 transmits the pressure signal to the external controller, and the external controller transmits the electrical signal to the corresponding liquid extraction component and the auxiliary solenoid valve on the upper side of the conduit 8, and the liquid extraction component extracts the liquid through the discharge pipe 9955.

[0052] At the same time, the contents not described in detail in this manual belong to the existing technology known to those skilled in the art. The active sprocket in the sprocket assembly 6 drives the anti-blocking brush 163 to rotate through the bevel gear assembly 161 and the pulley assembly 162, and the bristle end of the anti-blocking brush 163 cleans the exhaust side filter of the air compressor assembly 999 to avoid blockage.

[0053] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0054] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A continuous polymerization processing equipment based on polyester staple fibers, comprising a support frame, characterized in that: The top of the support frame is fixedly connected to the processing chamber for continuous polymerization of polyester staple fiber, and the bottom of the processing chamber is provided with a first valve, and the inner end of the processing chamber is rotatably connected to the stirring rod, and a motor is provided on the upper right side of the support frame, and the output end of the motor is connected to a sprocket assembly, and the other side of the sprocket assembly is connected to the stirring rod. A vacuum pump is provided on the support frame near the lower side of the motor, and the suction end of the vacuum pump is fixedly connected to a conduit, and the upper end of the conduit is connected to a condensation member connected to the processing chamber, and the top of the support frame is fixedly connected to a three-way valve connected to the condensation member. A water pump is provided on the right side of the vacuum pump near the support frame, and the drainage end of the water pump is fixedly connected to a water pipe connected to the condensation member, and the upper left end of the support frame is fixedly connected to a negative pressure pump, and the exhaust end of the negative pressure pump is provided with a pressure pipe fixedly connected to the left side of the three-way valve, and the upper left end of the processing chamber is provided with a feeding pipe assembly. The condensation component is composed of a second valve, a ventilation groove, a filter ring, a scraper, a cooling shell, a cooling plate, a discharge pipe, a solenoid valve, and a filter element. The second valve is fixedly connected to the lower side of the three-way valve and is fixedly connected to the processing chamber. A ventilation groove is provided on the upper side of the stirring rod near the second valve end. The stirring rod is fixedly connected to the filter ring near the top of the inner side of the processing chamber. The processing chamber is fixedly connected to the scraper near the filter ring end. The right side of the three-way valve is fixedly connected to the cooling shell. The back side of the cooling plate is fixedly connected and communicated with the water pipe. The right side of the cooling shell is connected to the filter element. The right side of the filter element is connected to the upper end of the conduit. An auxiliary flow valve is provided on the upper side of the conduit. The ventilation groove is connected to the filter ring, the scraper is fitted with the surface of the filter ring, the cooling shell is fixedly connected to the cooling plate, the front side of the cooling plate is provided with a return pipe connected to the water pipe, the bottom of the cooling shell is fixedly connected and connected to the discharge pipe, the bottom of the discharge pipe is fixedly connected to the solenoid valve, the bottom of the solenoid valve is fixedly connected with a discharge pipe, the filter element is composed of a preheating shell, a heating pipe, a shell, a cooling pipe, an adjusting element, a vortex tube, a hot air pipe, a cold air pipe, and an air compressor assembly, the inner end of the preheating shell is fixedly connected to the heating pipe, the heating pipe is electrically connected to an external power supply, the preheating shell is provided with a temperature sensor near the heating pipe side, the right side of the preheating shell is fixedly connected and connected to the shell, the inner end of the shell is fixedly connected to the cooling pipe, the preheating shell and the shell are connected The lower side is fixedly connected to the vortex tube, the left side of the vortex tube is fixedly connected and communicated with the hot air pipe, the right side of the vortex tube is fixedly connected and communicated with the cold air pipe, the hot air pipe is fixedly connected and communicated with the heating pipe, the cold air pipe is fixedly connected and communicated with the cooling pipe, the air compressor assembly is connected to the bottom air inlet end of the vortex tube, the adjusting part is composed of a casing, a spring assembly, a support plate, a pressure sensor, and a discharge pipe. The casing is fixedly connected and communicated with the shell and is located at the lower end of the cooling pipe, the upper side of the casing is slidably connected with the support plate, the upper side of the spring assembly is connected to the support plate, the bottom of the spring assembly is connected to the pressure sensor, the pressure sensor is fixedly connected to the bottom of the casing, and the back side of the casing is fixedly connected and communicated with the discharge pipe near the lower end of the support plate.

2. The continuous polymerization processing equipment based on polyester staple fibers according to claim 1, characterized in that: The edge of the support plate is sleeved with a gasket, the pressure sensor is electrically connected to the external controller, the discharge pipe is fixedly connected to the external liquid pumping component, and the external controller is electrically connected to the external liquid pumping component and the auxiliary solenoid valve respectively.

3. The continuous polymerization processing equipment based on polyester staple fibers according to claim 2, characterized in that: The anti-blocking component is composed of a bevel gear assembly, a pulley assembly, and an anti-blocking brush. The driving bevel gear assembly in the bevel gear assembly is coaxially fixedly connected to the upper end of the driving sprocket in the sprocket assembly. The support frame is provided with a protective shell near the outside of the bevel gear assembly. The driven bevel gear in the bevel gear assembly is rotatably connected to the inner end of the protective shell and is coaxially fixedly connected to the driving pulley in the pulley assembly. The driven pulley in the pulley assembly is fixedly connected to the anti-blocking brush. A filter is provided at the air compressor exhaust end in the air compressor assembly, and the bristle end of the anti-blocking brush is in contact with the filter at the air compressor exhaust end in the air compressor assembly.

4. The continuous polymerization processing equipment based on polyester staple fibers according to claim 3, characterized in that: A discharge pipe is fixedly connected to the bottom of the first valve, a heating plate electrically connected to an external controller is provided inside the processing chamber near the edge of the stirring rod, an air pressure sensor is provided at the inner end of the processing chamber, and a slot is provided between the support frame near the second valve and the three-way valve, which are respectively connected to the ventilation groove and the bottom of the three-way valve.

5. The continuous polymerization processing equipment based on polyester staple fibers according to claim 4, characterized in that: The water pumping end is fixedly connected to a water pipe connected to an external water source, the air pumping end is connected to an external nitrogen source, and a third valve is provided in the feeding pipe assembly.

6. The method for using the continuous polymerization processing equipment based on polyester staple fibers according to claim 5, characterized in that: The specific steps include: Step 1: The user starts the vacuum pump, which evacuates the processing chamber through the conduit, condenser, and three-way valve. After the evacuation is completed, the second valve is closed and the third valve in the feeding pipe assembly is opened. Under the action of external air pressure, terephthalic acid and methanol for preparing polyester staple fibers are pressed into the processing chamber. Then, the third valve in the feeding pipe assembly is closed and the motor is started. The motor drives the stirring rod to rotate through the sprocket assembly. The rotating stirring rod stirs the mixture of terephthalic acid and methanol, powering the heating plate in the processing chamber. The heating plate generates heat to provide a suitable temperature for the esterification reaction in the processing chamber. Terephthalic acid and methanol are esterified to produce dimethyl terephthalate. Low-boiling substances including methanol, water vapor, and methyl benzoate remain in the processing chamber. Step 2: In step 1, after the production of dimethyl terephthalate is completed, the temperature in the processing chamber is adjusted in sequence by the heating plate according to the boiling points of the low-boiling substances including methanol, water vapor, and methyl benzoate, so that the second valve in the condensing element is opened, and the vacuum pump, water pump, and air compressor assembly are started. The water pump introduces external cold water into the cooling plate in the cooling shell through the water pipe and the water pipe, and finally the cold water is discharged to the water source through the reflux pipe on the front side of the cooling plate. At this time, the vacuum pump is used to evacuate the processing chamber through the conduit, the filter element, the cooling shell, the three-way valve, the ventilation groove, and the filter ring. During operation, the steam that has reached the boiling point and evaporated in the processing chamber is introduced into the cooling shell through the filter ring, ventilation groove, second valve, and three-way valve. When the steam passes through the cooling plate in the cooling shell, the cold water flowing through the cooling plate absorbs heat and cools the steam through heat exchange, promoting the steam to liquefy when cooled. The liquefied steam is retained in the discharge pipe. When the liquid volume in the discharge pipe accumulates to a suitable level, the solenoid valve is opened, and the liquid is discharged through the solenoid valve and discharge pipe. The rotation of the stirring rod drives the filter ring to rotate, and the scraper scrapes the surface of the rotating filter ring to promote the shedding of impurities on the filter ring surface to avoid clogging. Step 3: In step 2, the air compressor in the air compressor assembly draws in and compresses external air, and then the compressed air is introduced into the vortex tube through the injection pipe. The vortex tube converts the compressed air into hot air and cold air through vortex conversion, wherein the hot air is injected into the heating pipe through the flow valve and the hot air pipe and discharged to the outside of the device, and the cold air is injected into the cooling pipe through the cold air pipe and discharged. When the steam in the cooling shell is not fully liquefied, the residual steam enters the preheating shell, and the heating pipe in the preheating shell reheats the residual steam. The residual steam is cooled and liquefied again after passing through the cooling pipe. The cooled and liquefied liquid is retained on the support plate in the regulating component. As the liquid accumulates, the liquid compresses the spring assembly through the support plate. At this time, the support plate moves downward, and the pressure sensor detects the pressure of the spring assembly, the support plate and the accumulated liquid. After the upper side of the support plate moves to the lower side of the liquid extraction point of the discharge pipe, the pressure sensor transmits the pressure signal to the external controller, and the external controller transmits an electrical signal to the corresponding liquid extraction component and the auxiliary solenoid valve on the upper side of the conduit, and the liquid extraction component extracts the liquid through the discharge pipe.

7. The method for using the continuous polymerization processing equipment based on polyester staple fibers according to claim 6, characterized in that: The driving sprocket in the sprocket assembly drives the anti-blocking brush to rotate through the bevel gear assembly and the pulley assembly, and the bristle end of the anti-blocking brush cleans the filter screen on the exhaust side of the air compressor assembly to avoid blockage.

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