CN116785744A - High-efficiency crude methanol rectifying device and method - Google Patents
High-efficiency crude methanol rectifying device and method Download PDFInfo
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- CN116785744A CN116785744A CN202310746839.9A CN202310746839A CN116785744A CN 116785744 A CN116785744 A CN 116785744A CN 202310746839 A CN202310746839 A CN 202310746839A CN 116785744 A CN116785744 A CN 116785744A
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- rectifying device
- filtering
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 131
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 98
- 238000001914 filtration Methods 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims description 64
- 238000004821 distillation Methods 0.000 claims description 33
- 239000002699 waste material Substances 0.000 claims description 20
- 238000003825 pressing Methods 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 9
- 238000010992 reflux Methods 0.000 abstract description 3
- 230000000630 rising effect Effects 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- 241000883990 Flabellum Species 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003398 denaturant Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/143—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/143—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step
- B01D3/148—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step in combination with at least one evaporator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a high-efficiency crude methanol rectifying device and a method, which belong to the technical field of methanol rectifying, and comprise a rectifying device placed on the ground, wherein the rectifying device comprises a tank body, a reflux pipe is fixedly arranged on the tank body, the rectifying device is used for rectifying crude methanol, a non-condensing collecting device is arranged on the rectifying device and comprises a non-condensing pipe, the non-condensing pipe is fixedly arranged on the reflux pipe, the non-condensing collecting device is used for collecting and utilizing non-condensing water, a filtering device is arranged on the rectifying device and comprises a collecting pipe, the filtering device is used for filtering impurities in liquid, and three rectifying devices, namely a pre-rectifying device, a high-pressure rectifying device and a normal-pressure rectifying device, are respectively distributed from left to right. The invention is provided with the pre-rectifying device, the high-pressure rectifying device and the normal-pressure rectifying device, carries out multistage rectification on the methanol, and improves the rectifying efficiency of the crude methanol.
Description
Technical Field
The invention relates to the technical field of methanol rectification, in particular to a high-efficiency crude methanol rectification device and method.
Background
Methanol, also called hydroxymethane, is an organic compound that is commonly used for the production of formaldehyde, pesticides, etc., and is used as an extractant for organic substances, a denaturant for alcohols, etc. The rectification of the methanol is carried out through a plurality of steps of pre-rectification, high-pressure rectification and normal-pressure rectification, and the Chinese patent application with publication number of CN110251981A discloses a methanol rectifying tower, which relates to the technical field of chemical production equipment. This prior art can form orderly liquid turbulence at the plectane surface through spread groove and the setting mode of arc wall, has further promoted the gas-liquid phase contact and has rectified the methyl alcohol in the mixed liquid, and gaseous homoenergetic when flowing through circular sponge and disc sponge simultaneously promotes the arc rotation, and the cooperation setting through-hole reaches the effect of erasing to liquid layer surface foam on the arc. However, this prior art is insufficient in rectification and cannot perform multiple recovery treatments of non-condensable gases and waste liquids.
Disclosure of Invention
Aiming at the technical problems, the invention adopts the following technical scheme: the utility model provides a high-efficient crude methanol rectifying device and method, includes the rectifying device of placing on ground, rectifying device include the jar body, fixed mounting has the back flow on the jar body, rectifying device be used for rectifying crude methanol, rectifying device on be provided with non-condensing collecting device, non-condensing collecting device include non-condensing pipe, non-condensing pipe fixed mounting is on the back flow, non-condensing collecting device be used for collecting and utilizing non-condensing, rectifying device on be provided with filter equipment, filter equipment include the collecting pipe, filter equipment be used for filtering impurity in the liquid, be provided with three rectifying device altogether, be prefractionator, high-pressure rectifying device and normal pressure rectifying device respectively, from left to right distribution.
The raw materials enter the pre-rectifying device for pre-rectifying, at the moment, part of non-condensing water enters the non-condensing water collecting device, liquid enters the high-pressure rectifying device for high-pressure rectifying, part of non-condensing water enters the non-condensing water collecting device, liquid subsequently enters the normal-pressure rectifying device, part of non-condensing water enters the non-condensing water collecting device, liquid reserved by the normal-pressure rectifying device enters the filtering device, liquid filtered by the filtering device is collected, and part of liquid enters the non-condensing water collecting device.
Further, the rectifying device comprises a liquid inlet pipe fixedly arranged on the tank body, a heater is fixedly arranged on the liquid inlet pipe, a bottom pipe is fixedly arranged at the bottom of the liquid inlet pipe, an evaporator is fixedly arranged on the bottom pipe, a return air pipe is fixedly arranged on the evaporator, the return air pipe is fixedly arranged with the tank body, a bottom condenser is fixedly arranged on the bottom pipe, a condenser is fixedly arranged on the return pipe, a top outflow pipe is fixedly arranged on the condenser, a top outflow pipe is fixedly arranged with the tank body, an outflow condenser is fixedly arranged on the top outflow pipe, a collecting pipe is fixedly arranged on the outflow condenser, a flow distribution plate is fixedly arranged with the bottom condenser, a top cap and a lower pipe are fixedly arranged on the flow distribution plate, the upper plane of the top cap is higher than the upper plane of the partition plate, the inner surface of the top cap is higher than the upper plane of the lower pipe, a partition plate is fixedly arranged on the flow distribution plate, and an opening and closing mechanism is arranged at the bottom of the tank body.
Further, the opening and closing mechanism comprises a lower plug which is slidably arranged on the tank body, the lower plug is slidably arranged with the bottom pipe, a lifting plate is fixedly arranged on the lower plug, a floating block is fixedly arranged on the lifting plate, an upper pushing block is fixedly arranged on the lower plug, a transverse plug is slidably arranged in the air return pipe, a trapezoid block is fixedly arranged on the transverse plug, the upper pushing block is slidably arranged with the trapezoid block, and an extension spring is directly arranged on the trapezoid block and the inner wall of the tank body.
Further, the three rectifying devices are respectively a pre-rectifying device, a high-pressure rectifying device and a normal-pressure rectifying device, a pressurizing pump is arranged on the tank body of the high-pressure rectifying device, and a collecting pipe of the normal-pressure rectifying device is connected with the filtering device.
Raw materials enter the device from the heater, get into the jar body through the feed liquor pipe after the heating of heater, afterwards, the raw materials liquid flows to the flow distribution plate at first, when the liquid level exceeds the top time of baffle and overflows and flow into on the flow distribution plate of next layer, afterwards analogize, final liquid flows to jar body bottom, along with the rising of jar internal liquid level, can drive the kicking block and rise down, thereby drive lifter plate and lower rising, make jar internal liquid can flow into the bottom pipe, simultaneously lower rising, can drive the rising of push-up piece, the rising of push-up piece can promote the cross plug and slide, the extension spring is elongated, make the cross plug no longer block the muffler, liquid can be because the effect of bottom pipe, make jar internal liquid level and the liquid level in the evaporimeter keep unanimous, liquid in the bottom pipe gets into the evaporimeter, evaporation through the evaporimeter, make steam get into jar body from the muffler, the vapor is through down pipe upward motion, constantly rising at this moment, get into in the top pipe, gaseous part in the top flow pipe reentry after the condenser liquefaction, can produce the distillation again, can produce the part and not get into the distillation reflux pipe after the distillation device, no longer gets into the atmospheric distillation device through the top pressure, the top pressure collector, the top pressure is directly gets into the distillation device after the distillation device, the atmospheric pressure, the top pressure is not get into the distillation device after the distillation device, the distillation device is filtered, and the top pressure is not got into the distillation.
Further, the non-condensing collecting device comprises a one-way shell fixedly arranged on the non-condensing pipe, the one-way shell is fixedly provided with a one-way pipe, the one-way pipe is fixedly provided with a waste liquid tank, the waste liquid tank is fixedly provided with a communicating pipe, the communicating pipe is fixedly provided with an outlet pipe, the waste liquid tank is fixedly provided with a connecting pipe, the connecting pipe is fixedly provided with a vane separator, and the one-way shell is internally provided with a one-way mechanism.
Further, the unidirectional mechanism comprises an inclined plate fixedly arranged in the unidirectional shell, a compression spring is fixedly arranged on the unidirectional shell, a blocking ball is fixedly arranged at the other end of the compression spring, and the blocking ball and the unidirectional shell are slidably arranged.
The non-condensing water from the pre-distillation device, the high-pressure distillation device and the normal-pressure rectification device enters the one-way shell through the non-condensing water pipe, and the blocking ball is jacked to compress the compression spring, so that the non-condensing water enters the one-way pipe through the one-way shell and then enters the waste liquid tank, liquid from the filtering device is arranged in the waste liquid tank, the non-condensing water passes through the liquid and then enters the plume separator, and crude methanol is obtained through the outlet of the plume separator.
The compression spring and the blocking ball enable the non-condensing water not to flow back into the non-condensing water pipe from the one-way pipe.
Further, the filtering device comprises a water pump fixedly arranged on the collecting pipe, the water pump is fixedly arranged on the filtering shell, a filtering plate group is slidably arranged on the filtering shell, a vertical rack is fixedly arranged on the filtering plate group, the filtering shell and a communicating pipe are fixedly arranged on the communicating pipe, an upper water suction pump is fixedly arranged on the ground, a cleaning pool is fixedly arranged on the ground, a vertical spring is arranged between the cleaning pool and the filtering plate group, a spring frame is fixedly arranged on the cleaning pool, a transverse rack is slidably arranged on the cleaning pool, a rack plate is fixedly arranged on the transverse rack, a reset spring is arranged between the rack plate and the spring frame, a lower pressing plate is slidably arranged on the cleaning pool, a triangular pushing block is fixedly arranged at the bottom of the lower pressing plate, a triangular pushing block and the rack plate are slidably arranged on the lower pressing plate, a fan blade is rotatably arranged in the filtering shell, a driving wheel is fixedly arranged on the fan blade, a notch wheel is rotatably arranged at the bottom of the filtering shell, a driving belt is wound outside the notch wheel and the driving wheel, a convex lifting plate is slidably arranged below the filtering shell, the convex lifting plate and the filtering plate is lapped with the filtering shell, a small spring is arranged between the convex lifting plate and the filtering shell, a cleaning motor is fixedly arranged at the bottom of the filtering shell, a cleaning motor is fixedly arranged on an output shaft of the cleaning motor, and a cleaning mechanism is arranged in the cleaning mechanism.
Further, the cleaning mechanism comprises a main cleaning roller and a secondary cleaning roller which are rotatably arranged on the cleaning pool, a top gear is fixedly arranged on the main cleaning roller, a secondary gear is fixedly arranged on the secondary cleaning roller, the secondary cleaning roller is meshed with the secondary gear, and the top gear is meshed with the transverse rack.
The liquid that distillation of ordinary pressure distillation tower was accomplished is through the water pump suction, in the collecting pipe got into the filtration shell, can wash three filter plates to the filter plate group at a high speed, carry out multistage filtration, the solid can stay on the filter plate group, rivers can strike the flabellum, make the flabellum rotate, liquid is collected through outlet pipe outflow coarse methanol afterwards, when lack of liquid in non-condensing device, go up the suction pump and start, in drawing partial liquid from communicating pipe suction waste liquid jar, the flabellum rotates and can drive the drive belt and rotate, thereby drive the notch wheel and rotate, notch wheel high-speed rotation, can make the protruding lifter always be located the outside of notch wheel groove, the compression state is kept to the spring, but along with the impurity on the filter plate group is increased more and more, can lead to the rivers of impact flabellum to be slower and slower, thereby make the rotational speed of notch wheel be slower and slower, thereby make protruding lifter can drop in the recess of notch wheel in this moment the water pump stop the operation, simultaneously protruding lifter can drive the group decline, thereby make vertical rack and cleaning gear start meshing this moment, the cleaning motor rotates and can drive the cleaning gear and rotate, thereby drive vertical rack and filter plate group and start to descend, when the vertical spring can be driven by the notch wheel rotation, thereby drive the top plate and the filter plate is driven down, the contact with the filter plate and the top plate is driven down in proper order to drive the roll down, and the outer surface is driven down, thereby drive down.
Compared with the prior art, the invention has the beneficial effects that: (1) The invention is provided with the pre-rectifying device, the high-pressure rectifying device and the normal-pressure rectifying device, carries out multistage rectification on the methanol, and improves the rectifying efficiency of crude methanol; (2) The non-condensing collecting device provided by the invention can collect the non-condensing produced by each rectifying device, and the non-condensing is introduced into the crude methanol, and then the crude methanol is further purified by the vane separator, so that the efficiency is improved; (3) The filtering device provided by the invention can filter the methanol after coarse rectification to remove impurities in the methanol, and can automatically clean the methanol after certain impurities are accumulated on the filter plate, so that the filtering device is convenient to use and high in filtering efficiency.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention.
FIG. 2 is a schematic diagram of the rectification apparatus of the present invention.
FIG. 3 is a schematic diagram of the internal structure of the rectification apparatus of the present invention.
FIG. 4 is a schematic view of a manifold structure according to the present invention.
Fig. 5 is a schematic structural diagram of the condensing collecting device.
Fig. 6 is a schematic view of the structure of the unidirectional shell of the present invention.
Fig. 7 is a schematic view of a partial structure at B in fig. 6 according to the present invention.
FIG. 8 is a schematic view of a filter device according to the present invention.
FIG. 9 is a schematic view showing the internal structure of the filtering device of the present invention.
Fig. 10 is a schematic view of a partial structure at a in fig. 9 according to the present invention.
Reference numerals: 101-a tank body; 102-a heater; 103-a return pipe; 104-a condenser; 105-top outflow pipe; 106-flowing out of the condenser; 107-collecting pipe; 108-an evaporator; 109-muffler; 110-a liquid inlet pipe; 111-bottom tube; 112-a bottom condenser; 113-a splitter plate; 114-capping; 115-down tube; 116-separator; 117-floating blocks; 118-lifting plate; 119-plugging; 120-pushing up the block; 121-trapezoidal blocks; 122-cross plugs; 123-stretching a spring; 201-a non-condensing tube; 202-a one-way shell; 203-a unidirectional tube; 204-a waste liquid tank; 205-communicating pipe; 206-connecting the pipes; 207-plume separator; 208-compressing the spring; 209-sloping plate; 210-blocking ball; 211-outlet pipe; 301-collecting pipe; 302-a water pump; 303-a filter housing; 304-a cleaning pool; 305-standing springs; 306-a filter plate group; 307-vertical racks; 308-a driving wheel; 309-a drive belt; 310-notch wheel; 311-a return spring; 312-fan blades; 313-small springs; 314-a convex lifter plate; 315-rack plate; 316-pushing down triangular blocks; 317-lower press plate; 318-transverse rack; 319-a washing motor; 320-cleaning the gear; 321-a main cleaning roller; 322-top gear; 323-cleaning the roller; 324-time gear; 325-spring rack; 326-upper suction pump.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings.
Examples: referring to fig. 1-10, a high-efficiency crude methanol rectifying device and method, comprising a rectifying device placed on the ground, wherein the rectifying device comprises a tank body 101, a return pipe 103 is fixedly installed on the tank body 101, the rectifying device is used for rectifying crude methanol, a non-condensing collecting device is arranged on the rectifying device, the non-condensing collecting device comprises a non-condensing pipe 201, the non-condensing pipe 201 is fixedly installed on the return pipe 103, the non-condensing collecting device is used for collecting and utilizing non-condensing water, a filtering device is arranged on the rectifying device, the filtering device comprises a collecting pipe 301, the filtering device is used for filtering impurities in liquid, and three rectifying devices are respectively arranged, namely a pre-rectifying device, a high-pressure rectifying device and an atmospheric rectifying device, and are distributed from left to right.
The raw materials enter the pre-rectifying device for pre-rectifying, at the moment, part of non-condensing water enters the non-condensing water collecting device, liquid enters the high-pressure rectifying device for high-pressure rectifying, part of non-condensing water enters the non-condensing water collecting device, liquid subsequently enters the normal-pressure rectifying device, part of non-condensing water enters the non-condensing water collecting device, liquid reserved by the normal-pressure rectifying device enters the filtering device, liquid filtered by the filtering device is collected, and part of liquid enters the non-condensing water collecting device.
As shown in fig. 2 to 4, the rectifying device includes a liquid inlet pipe 110 fixedly installed on a tank 101, a heater 102 is fixedly installed on the liquid inlet pipe 110, a bottom pipe 111 is fixedly installed at the bottom of the liquid inlet pipe 110, an evaporator 108 is fixedly installed on the bottom pipe 111, a return pipe 109 is fixedly installed on the evaporator 108, the return pipe 109 is fixedly installed with the tank 101, a bottom condenser 112 is fixedly installed on the bottom pipe 111, a condenser 104 is fixedly installed on a return pipe 103, a top outflow pipe 105 is fixedly installed on the condenser 104, the top outflow pipe 105 is fixedly installed with the tank 101, an outflow condenser 106 is fixedly installed on the top outflow pipe 105, a collecting pipe 107 is fixedly installed on the outflow condenser 106, the collecting pipe 107 is fixedly installed with the bottom condenser 112, a flow dividing plate 113 is fixedly installed in the tank 101, an upper cap 114 and a lower pipe 115 are fixedly installed on the flow dividing plate 113, the upper plane of the upper cap 114 is higher than the upper plane of the partition 116, the inner surface of the top of the upper cap 114 is higher than the upper plane of the lower pipe 115, a partition plate 116 is fixedly installed on the flow dividing plate 113, and a mechanism is provided at the bottom of the tank 101.
As shown in fig. 3, the opening and closing mechanism comprises a lower plug 119 slidably mounted on the tank 101, the lower plug 119 is slidably mounted with the bottom pipe 111, a lifting plate 118 is fixedly mounted on the lower plug 119, a floating block 117 is fixedly mounted on the lifting plate 118, an upper push block 120 is fixedly mounted on the lower plug 119, a transverse plug 122 is slidably mounted on the muffler 109, a trapezoid block 121 is fixedly mounted on the transverse plug 122, the upper push block 120 is slidably mounted with the trapezoid block 121, and a tension spring 123 is directly arranged between the trapezoid block 121 and the inner wall of the tank 101.
As shown in fig. 1, the total of three rectifying devices are a pre-rectifying device, a high-pressure rectifying device and a normal-pressure rectifying device, wherein a pressurizing pump is arranged on a tank body 101 of the high-pressure rectifying device, and a collecting pipe 107 of the normal-pressure rectifying device is connected with a filtering device.
Raw material enters the device from the heater 102, enters the tank body 101 through the liquid inlet pipe 110 after being heated by the heater 102, the raw material liquid firstly flows onto the flow dividing plate 113, then overflows and flows onto the flow dividing plate 113 of the next layer when the liquid level exceeds the top time of the baffle 116, then the liquid finally flows to the bottom of the tank body 101, the floating block 117 is driven to rise along with the rising of the liquid level in the tank body 101, the lifting plate 118 and the lower plug 119 are driven to rise, so that the liquid in the tank body 101 can flow into the bottom pipe 111, the lower plug 119 is driven to rise, the upper push block 120 is driven to rise, the transverse plug 122 is driven to slide, the extension spring 123 is elongated, the transverse plug 122 does not block the return air pipe 109 any more, the liquid can be influenced by the bottom pipe 111, the liquid level in the tank 101 is kept consistent with the liquid level in the evaporator 108, the liquid in the bottom pipe 111 enters the evaporator 108, the vapor enters the tank 101 from the air return pipe 109 through the evaporation of the evaporator 108, the vapor moves upwards through the lower pipe 115 and then continuously rises to enter the top outflow pipe 105, part of the gas in the top outflow pipe 105 is liquefied through the condenser 104 and then enters the return pipe 103 again to carry out distillation again, partial non-condensing steam is generated at the moment, the non-condensing steam enters the non-condensing steam collecting device, the other part of the gas coming out of the top outflow pipe 105 directly flows out of the condenser 106 and then enters the collecting pipe 107, then enters the next distilling device, and after pre-rectification, high-pressure distillation and normal-pressure distillation, the gas enters the filtering device through the collecting pipe 107 of the normal-pressure rectifying device.
As shown in fig. 5 to 7, the non-condensing collecting device comprises a one-way shell 202 fixedly installed on a non-condensing pipe 201, a one-way pipe 203 is fixedly installed on the one-way shell 202, a waste liquid tank 204 is fixedly installed on the one-way pipe 203, a communicating pipe 205 is fixedly installed on the waste liquid tank 204, an outlet pipe 211 is fixedly installed on the communicating pipe 205, a connecting pipe 206 is fixedly installed on the waste liquid tank 204, a vane separator 207 is fixedly installed on the connecting pipe 206, and a one-way mechanism is arranged in the one-way shell 202.
As shown in fig. 7, the unidirectional mechanism includes a sloping plate 209 fixedly installed in the unidirectional shell 202, a compression spring 208 is fixedly installed on the unidirectional shell 202, a blocking ball 210 is fixedly installed at the other end of the compression spring 208, and the blocking ball 210 is slidably installed with the unidirectional shell 202.
The non-condensing water from the pre-distillation device, the high-pressure distillation device and the normal-pressure rectification device enters the one-way shell 202 through the non-condensing water pipe 201, and the blocking ball 210 is pushed to compress the compression spring 208, so that the non-condensing water enters the one-way pipe 203 through the one-way shell 202 and then enters the waste liquid tank 204, the liquid from the filtering device is in the waste liquid tank 204, the non-condensing water passes through the liquid and then enters the vane separator 207, and crude methanol is obtained through the outlet of the vane separator 207.
The compression spring 208 and the blocking ball 210 are present so that no condensed water will not flow back from the unidirectional pipe 203 into the non-condensed water pipe 201.
As shown in fig. 8 to 10, the filtering device comprises a water pump 302 fixedly mounted on a collecting pipe 301, the water pump 302 is fixedly mounted on a filtering shell 303, a filtering plate group 306 is slidably mounted on the filtering shell 303, a vertical rack 307 is fixedly mounted on the filtering plate group 306, the filtering shell 303 is fixedly mounted with a communicating pipe 205, an upper water suction pump 326 is fixedly mounted on the communicating pipe 205, a cleaning tank 304 is fixedly mounted on the ground, a vertical spring 305 is arranged between the cleaning tank 304 and the filtering plate group 306, a spring frame 325 is fixedly mounted on the cleaning tank 304, a transverse rack 318 is slidably mounted on the cleaning tank 304, a rack plate 315 is fixedly mounted on the transverse rack 318, a reset spring 311 is arranged between the rack plate 315 and the spring frame 325, a lower pressing plate 317 is slidably mounted on the cleaning tank 304, a pushing down triangle 316 is fixedly mounted at the bottom of the lower pressing plate 317, a pushing down triangle 316 is slidably mounted with the rack plate 315, a fan blade 312 is rotatably mounted in the filtering shell 303, a driving wheel 308 is fixedly mounted on the fan blade 312, a notch wheel 310 is rotatably mounted at the bottom of the filtering shell 303, a driving belt 309 is wound outside the cleaning tank 304, a motor 319 is fixedly mounted on the driving belt 319, a motor 319 is fixedly mounted on the driving shaft 314 is fixedly mounted on the lifting motor 314, a filter housing is fixedly mounted on the lifting motor 314, and a small output shaft is fixedly mounted on the lifting motor 314 is fixedly mounted on the lifting motor, and is rotatably mounted on the filter housing 303, and is fixedly mounted on the lifting motor 314, and is fixedly mounted on the lifting drive shaft, and is rotatably mounted, and is rotatably mounted, and is a drive, and is mounted, and is.
As shown in fig. 9 and 10, the cleaning mechanism includes a main cleaning roller 321 and a sub cleaning roller 323 rotatably mounted on the cleaning tank 304, a top gear 322 is fixedly mounted on the main cleaning roller 321, a sub gear 324 is fixedly mounted on the sub cleaning roller 323, the sub cleaning roller 323 is engaged with the sub gear 324, and the top gear 322 is engaged with the rack 318.
The liquid distilled by the atmospheric distillation tower is pumped by the water pump 302, enters the filter shell 303 through the collecting pipe 301, is washed towards three filter plates of the filter plate group 306 at high speed, is subjected to multi-stage filtration, solids are remained on the filter plate group 306, water flow can impact the fan blades 312, the fan blades 312 rotate, then the liquid flows out of crude methanol through the outlet pipe 211 to be collected, when the liquid is lack of the condensing device, the upper water pump 326 is started to pump part of the liquid into the waste liquid tank 204 from the communicating pipe 205, the fan blades 312 rotate to drive the transmission belt 309 to rotate, the notch wheel 310 is driven to rotate, the notch wheel 310 rotates at high speed, the convex lifting plate 314 is always positioned at the outer side of the notch wheel 310, the small springs 313 keep a compressed state, but as impurities on the filter plate group 306 are more and more, the water flow impacting the fan blades 312 is slower, and the rotating speed of the notch wheel 310 is slower and slower, so that the convex lifting plate 314 falls into the groove of the notch wheel 310, the water pump 302 stops running, the convex lifting plate 314 descends to drive the filter plate set 306 to descend, the vertical rack 307 starts to mesh with the cleaning gear 320, the cleaning motor 319 rotates to drive the cleaning gear 320 to rotate, the vertical rack 307 and the filter plate set 306 start to descend, the vertical spring 305 is continuously compressed, after the filter plate set 306 starts to contact with the lower pressing plate 317, the filter plate set 306 continues to descend to drive the lower pressing plate 317 to descend, the lower pressing plate 317 descends to drive the push-down triangular block 316 to descend to drive the rack plate 315 to slide outwards, the return spring 311 is compressed, the rack plate 315 slides outwards to drive the transverse rack 318 to slide, the transverse rack 318 drives the top gear 322 to rotate, the top gear 322 drives the secondary gear 324 to rotate, thereby sequentially driving all the secondary cleaning rollers 323 and the main cleaning rollers 321 to rotate and brushing the outer surfaces of the filter plate groups 306.
The invention discloses a working principle of a high-efficiency crude methanol rectifying device, which is as follows: raw material enters the device from the heater 102, enters the tank body 101 through the liquid inlet pipe 110 after being heated by the heater 102, the raw material liquid firstly flows onto the flow dividing plate 113, then overflows and flows onto the flow dividing plate 113 of the next layer when the liquid level exceeds the top time of the baffle 116, then the liquid finally flows to the bottom of the tank body 101, the floating block 117 is driven to rise along with the rising of the liquid level in the tank body 101, the lifting plate 118 and the lower plug 119 are driven to rise, so that the liquid in the tank body 101 can flow into the bottom pipe 111, the lower plug 119 is driven to rise, the upper push block 120 is driven to rise, the transverse plug 122 is driven to slide, the extension spring 123 is elongated, the transverse plug 122 does not block the return air pipe 109 any more, the liquid can be influenced by the bottom pipe 111, the liquid level in the tank 101 is kept consistent with the liquid level in the evaporator 108, the liquid in the bottom pipe 111 enters the evaporator 108, the vapor enters the tank 101 from the air return pipe 109 through the evaporation of the evaporator 108, the vapor moves upwards through the lower pipe 115 and then continuously rises to enter the top outflow pipe 105, part of the gas in the top outflow pipe 105 is liquefied through the condenser 104 and then enters the return pipe 103 again to carry out distillation again, partial non-condensing steam is generated at the moment, the non-condensing steam enters the non-condensing steam collecting device, the other part of the gas coming out of the top outflow pipe 105 directly flows out of the condenser 106 and then enters the collecting pipe 107, then enters the next distilling device, and after pre-rectification, high-pressure distillation and normal-pressure distillation, the gas enters the filtering device through the collecting pipe 107 of the normal-pressure rectifying device. The liquid distilled by the atmospheric distillation tower is pumped by the water pump 302, enters the filter shell 303 through the collecting pipe 301, is washed towards three filter plates of the filter plate group 306 at high speed, is subjected to multi-stage filtration, solids are remained on the filter plate group 306, water flow can impact the fan blades 312, the fan blades 312 rotate, then the liquid flows out of crude methanol through the outlet pipe 211 to be collected, when the liquid is lack of the condensing device, the upper water pump 326 is started to pump part of the liquid into the waste liquid tank 204 from the communicating pipe 205, the fan blades 312 rotate to drive the transmission belt 309 to rotate, the notch wheel 310 is driven to rotate, the notch wheel 310 rotates at high speed, the convex lifting plate 314 is always positioned at the outer side of the notch wheel 310, the small springs 313 keep a compressed state, but as impurities on the filter plate group 306 are more and more, the water flow impacting the fan blades 312 is slower, and the rotating speed of the notch wheel 310 is slower and slower, so that the convex lifting plate 314 falls into the groove of the notch wheel 310, the water pump 302 stops running, the convex lifting plate 314 descends to drive the filter plate set 306 to descend, the vertical rack 307 starts to mesh with the cleaning gear 320, the cleaning motor 319 rotates to drive the cleaning gear 320 to rotate, the vertical rack 307 and the filter plate set 306 start to descend, the vertical spring 305 is continuously compressed, after the filter plate set 306 starts to contact with the lower pressing plate 317, the filter plate set 306 continues to descend to drive the lower pressing plate 317 to descend, the lower pressing plate 317 descends to drive the push-down triangular block 316 to descend to drive the rack plate 315 to slide outwards, the return spring 311 is compressed, the rack plate 315 slides outwards to drive the transverse rack 318 to slide, the transverse rack 318 drives the top gear 322 to rotate, the top gear 322 drives the secondary gear 324 to rotate, thereby sequentially driving all the secondary cleaning rollers 323 and the main cleaning rollers 321 to rotate and brushing the outer surfaces of the filter plate groups 306. In addition, the non-condensing water from the pre-distillation device, the high-pressure distillation device and the normal-pressure rectification device enters the one-way shell 202 through the non-condensing water pipe 201, and the blocking ball 210 is pushed to compress the compression spring 208, so that the non-condensing water enters the one-way pipe 203 through the one-way shell 202 and then enters the waste liquid tank 204, the liquid from the filtering device is in the waste liquid tank 204, the non-condensing water passes through the liquid and then enters the vane separator 207, and crude methanol is obtained through the outlet of the vane separator 207.
Claims (9)
1. The utility model provides a high-efficient crude methanol rectifying device, includes the rectifying device of placing on ground, its characterized in that: the rectifying device include a jar body (101), fixed mounting has back flow (103) on jar body (101), rectifying device be used for rectifying crude methanol, rectifying device on be provided with condensing gas collection device, condensing gas collection device include condensing gas pipe (201), condensing gas pipe (201) fixed mounting is on back flow (103), condensing gas collection device be used for collecting and utilizing condensing gas, rectifying device on be provided with filter equipment, filter equipment include collecting pipe (301), filter equipment be used for filtering impurity in the liquid, be provided with three rectifying device altogether, be prefractionator, high-pressure rectifying device and normal pressure rectifying device respectively, from left to right sides distributes.
2. The high efficiency crude methanol rectifying unit according to claim 1, wherein: the rectifying device comprises a liquid inlet pipe (110) fixedly arranged on a tank body (101), a heater (102) is fixedly arranged on the liquid inlet pipe (110), a bottom pipe (111) is fixedly arranged at the bottom of the liquid inlet pipe (110), an evaporator (108) is fixedly arranged on the bottom pipe (111), a return pipe (109) is fixedly arranged on the evaporator (108), the return pipe (109) is fixedly arranged with the tank body (101), a bottom condenser (112) is fixedly arranged on the bottom pipe (111), a condenser (104) is fixedly arranged on the return pipe (103), a top outflow pipe (105) is fixedly arranged on the condenser (104), a top outflow pipe (105) is fixedly arranged with the tank body (101), a flow collecting pipe (107) is fixedly arranged on the top outflow pipe (105), a flow distributing plate (113) is fixedly arranged in the tank body (101), an upper cap (114) and a lower cap (115) are fixedly arranged on the flow distributing plate (113), a top plane (116) is fixedly arranged on the top surface of the upper cap (116), an opening and closing mechanism is arranged at the bottom of the tank body (101).
3. The high efficiency crude methanol rectifying apparatus according to claim 2, wherein: the opening and closing mechanism comprises a lower plug (119) which is slidably mounted on the tank body (101), the lower plug (119) is slidably mounted with the bottom pipe (111), a lifting plate (118) is fixedly mounted on the lower plug (119), a floating block (117) is fixedly mounted on the lifting plate (118), an upper pushing block (120) is fixedly mounted on the lower plug (119), a transverse plug (122) is slidably mounted in the air return pipe (109), a trapezoid block (121) is fixedly mounted on the transverse plug (122), the upper pushing block (120) is slidably mounted with the trapezoid block (121), and an extension spring (123) is directly arranged on the inner wall of the trapezoid block (121) and the inner wall of the tank body (101).
4. The high efficiency crude methanol rectifying apparatus according to claim 2, wherein: the tank body (101) of the high-pressure rectifying device is provided with a booster pump, and the collecting pipe (107) of the normal-pressure rectifying device is connected with the filtering device.
5. The high efficiency crude methanol rectifying unit according to claim 1, wherein: the condensing collecting device comprises a one-way shell (202) fixedly installed on a condensing pipe (201), a one-way pipe (203) is fixedly installed on the one-way shell (202), a waste liquid tank (204) is fixedly installed on the one-way pipe (203), a communicating pipe (205) is fixedly installed on the waste liquid tank (204), an outlet pipe (211) is fixedly installed on the communicating pipe (205), a connecting pipe (206) is fixedly installed on the waste liquid tank (204), a vane separator (207) is fixedly installed on the connecting pipe (206), and a one-way mechanism is arranged in the one-way shell (202).
6. The high-efficiency crude methanol rectifying unit as set forth in claim 5, wherein: the unidirectional mechanism comprises an inclined plate (209) fixedly arranged in the unidirectional shell (202), a compression spring (208) is fixedly arranged on the unidirectional shell (202), a blocking ball (210) is fixedly arranged at the other end of the compression spring (208), and the blocking ball (210) and the unidirectional shell (202) are slidably arranged.
7. The high-efficiency crude methanol rectifying unit as set forth in claim 5, wherein: the filtering device comprises a water pump (302) fixedly arranged on a collecting pipe (301), the water pump (302) is fixedly arranged on a filtering shell (303), a filtering plate group (306) is slidably arranged on the filtering shell (303), a vertical rack (307) is fixedly arranged on the filtering plate group (306), the filtering shell (303) is fixedly arranged with a communicating pipe (205), an upper water suction pump (326) is fixedly arranged on the communicating pipe (205), a cleaning pool (304) is fixedly arranged on the ground, a vertical spring (305) is arranged between the cleaning pool (304) and the filtering plate group (306), a spring frame (325) is fixedly arranged on the cleaning pool (304), a transverse rack (318) is slidably arranged on the cleaning pool (304), a rack plate (315) is fixedly arranged on the transverse rack (318), a reset spring (311) is arranged between the rack plate (315) and the spring frame (325), a lower pressing plate (317) is slidably arranged on the cleaning pool (304), a lower triangular block (316) is fixedly arranged at the bottom of the lower pressing plate (317), the lower triangular block (316) is slidably arranged with the rack plate (315), a rotary driving wheel (310) is fixedly arranged on the filtering shell (312), a rotary driving wheel (310) is fixedly arranged on the bottom of the filtering shell (312), the notch wheel (310) and the driving wheel (308) are externally wound with a driving belt (309), a convex lifting plate (314) is slidably arranged below the filter shell (303), the convex lifting plate (314) is overlapped with the filter plate group (306), a small spring (313) is arranged between the convex lifting plate (314) and the filter shell (303), a cleaning motor (319) is fixedly arranged at the bottom of the filter shell (303), a cleaning gear (320) is fixedly arranged on an output shaft of the cleaning motor (319), and a cleaning mechanism is arranged in the cleaning pool (304).
8. The high efficiency crude methanol rectifying unit of claim 7, wherein: the cleaning mechanism comprises a main cleaning roller (321) and a secondary cleaning roller (323) which are rotatably arranged on the cleaning pool (304), a top gear (322) is fixedly arranged on the main cleaning roller (321), a secondary gear (324) is fixedly arranged on the secondary cleaning roller (323), the secondary cleaning roller (323) is meshed with the secondary gear (324), and the top gear (322) is meshed with the transverse toothed bar (318).
9. A high-efficiency crude methanol rectification method is characterized in that: the method comprises the following steps: (1) The raw material liquid is subjected to pre-distillation through a pre-distillation device; (2) carrying out high-pressure distillation on the liquid after the pre-distillation; (3) carrying out normal pressure distillation on the liquid after the high pressure distillation; (4) filtering the distilled liquid to obtain crude methanol; (5) The non-condensed steam discharged by each distillation device is collected and further collected by a vane separator to obtain crude methanol.
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| CN202310746839.9A CN116785744A (en) | 2023-06-25 | 2023-06-25 | High-efficiency crude methanol rectifying device and method |
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| CN202310746839.9A CN116785744A (en) | 2023-06-25 | 2023-06-25 | High-efficiency crude methanol rectifying device and method |
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